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GST Primary GST Primary Best Strategies for Health Care Quality Im... Best Strategies for Health Care Quality Improvement - Diabetes Quality Improvement Strategies for Antibio... Kathryn McDonald, Stanford-UCSF Evidence-b... Systematic review assessing the effect of ... Quality Improvement Strategies for Antibiotics Management Kathryn McDonald, Stanford-UCSF Evidence-based Practice Center, 117 Encina Commons, Stanford, CA 94305-6019, Kathy.mcdonald@stanford.edu Systematic review assessing the effect of quality improvement strategies on appropriate prescribing of antibiotics and appropriate choice of antibiotics. Adherence Adherence Assistive Devices Assistive Devices Childhood Burn Hanson MacMillan Childhood Burn Hanson MacMillan CLSA_9 CLSA_9 Cyberabuse Cyberabuse Cognitive Behavioural Therapy for Violent ... This review included randomized trials abo... Cognitive Behavioural Therapy for Violent Men who Batter Their Partners This review included randomized trials about the effects of cognitive behavioral therapy on domestic violence. The intervention included programs based on the Duluth Model. The violence had to be committed by a male toward his female partner. The violence also had to be physical. The primary outcomes were new arrests and convictions, and new reports of violence. CABG vs PCI CABG vs PCI Quality Improvement Strategies for Prevent... Quality Improvement Strategies for Preventing Nosocomial Infections (Created 17-Feb-06) Quality Improvement Strategies for Asthma ... Quality Improvement Strategies for Asthma Control Erectile Dysfunction (Created 30-Jan-06) Erectile Dysfunction (Created 30-Jan-06) Inequality - Smoking Cessation to Reduce S... This review was the first part of a projec... Inequality - Smoking Cessation to Reduce Socio-Economic Differences This review was the first part of a project about inequality. It included randomized trials about the effect of smoking cessation interventions on reducing socio-economic differences. The studies had to report data either on persons with low socio-economic groups status or, preferably, on both low and high socio-economic groups. Diet and Physical Activity to Reduce Socio... This review was the second part in a proje... Diet and Physical Activity to Reduce Socio-Economic Differences This review was the second part in a project about inequality. It included randomized trials about the effect of interventions on reducing socio-economic differences in diet and physical activity. The studies had to report data either on persons with low socio-economic groups status or, preferably, on both low and high socio-economic groups. Workfare The data in SRS are not identical to the d... Workfare The data in SRS are not identical to the data in the published report. We used SRS only for an updated search. The review included randomized trials about the effect of welfare-to-work programs. Participants were welfare recipients. There were basically two types of programs. The educational type tried to build knowledge and skills in order to help the welfare recipients acquire jobs that could support them economically. The "work first" approach was more aimed at getting the participants quickly into a job. Exercise interventions for the management ... The objective of this systematic review wa... Exercise interventions for the management of frailty The objective of this systematic review was to examine the effectiveness of current exercise interventions on the management of frailty. A comprehensive search of Medline, Embase, Psycinfo, Cinahl, Scopus, Ageline, Eric, and SportDiscus databases was conducted and produced 1808 citations. So far we have completed 2 levels of “title and abstract” screening and we ended up with 262 articles. We have just started the full text screening. Eligibility criteria included original studies whose participants were identified as frail or prefrail with specific criteria and in which structured physical activity was included as at least one component of the intervention. Create a free account, build a dictionary with saved terms to re-use later! Public Domestic Violence - Using Cognitive Behavior Therapy Smoking Cessation to Reduce Socio-Economic Differences Diet and Physical Activity to Reduce Socio-Economic Differences Workfare Exercise Interventions for the Management of Frailty Search     Simple Advanced Refine (4 coded questions)  Any of these:   Exact Phrase: All of these: None of these: Author: Periodical: Projects: No restrictions   Libraries: Public   Select SRS Projects Show Saved Terms Select Library Show articles that do not have abstracts  Humans or Animals Humans Animals Ages All Infant: birth-23 months All Child: 0-18 years All Adult: 19+ years Newborn: birth-1 month Infant: 1-23 months Preschool Child: 2-5 years Child: 6-12 years Adolescent: 13-18 years Adult: 19-44 years Middle Aged: 45-64 years Middle Aged + Aged: 45+ years Aged: 65+ years 80 and over: 80+ years Undetermined Type of Article Clinical Trial Editorial Letter Meta-Analysis Practice Guideline Randomized Controlled Trial Review Addresses Bibliography Biography Case Reports Classical Article Clinical Conference Clinical Trial, Phase I Clinical Trial, Phase II Clinical Trial, Phase III Clinical Trial, Phase IV Comment Comparative Study Consensus Development Conference Consensus Development Conference, NIH Controlled Clinical Trial Corrected and Republished Article Dictionary Directory Duplicate Publication English Abstract Evaluation Studies Festschrift Government Publications Guideline Historical Article Interview In Vitro Journal Article Lectures Legal Cases Legislation Multicenter Study News Newspaper Article Overall Patient Education Handout Periodical Index Published Erratum Retracted Publication Research Support, N.I.H., Extramural Research Support, N.I.H., Intramural Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 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Retraction of Publication Scientific Integrity Review Support of Research Technical Report Twin Study Validation Studies Not a Primary Study or Review Unknown Primary Study Case Series Case Control Cohort Study Observational Study Qualitative Research CBA or ITS Registry Double Blind Controlled before after study Quasi-randomized trial Simple before after study Cluster-RCT Non-Randomized Study Report Book Book chapter Dissertation Conference procedings Secondary Research Not RCT Language English French German Italian Japanese Russian Spanish Afrikaans Albanian Unknown Arabic Armenian Azerbaijani Bosnian Bulgarian Catalan Chinese Croatian Czech Danish Dutch Esperanto Estonian Finnish Georgian Greek, Modern Hebrew Hindi Hungarian Icelandic Indonesian Kinyarwanda Korean Latin Latvian Lithuanian Macedonian Malay Malayalam Maori Multiple Languages Norwegian Persian Polish Portuguese Pushto Romanian Sanskrit Scottish gaelic Serbian Slovak Slovenian Swedish Thai Turkish Ukrainian Vietnamese Not English Not French Results(1-25 of 559) Sort By: Publication Date Relevance Took: 1.964 seconds to search 17,750,454  Action: Copy Results to new Clipboard Build Search Link Page 1 of 23 1 2 3 4 > Last >> (559 articles found) Ongoing research in Europe: Alpha One International Registry (AIR) objectives and development. Mar 2007 R A Stockley,M Luisetti,M Miravitlles,E Piitulainen,P Fernandez,Alpha One International Registry (AIR) group In 1997, the World Health Organization recommended establishing an international registry of alpha1-antitrypsin deficiency. The objective of the present article is to describe the organisation of an international network of registries, the Alpha One International Registry (AIR), and the processes o... ( view more )f enrolling and entering data. By the end of 2005, the registry included individuals from 21 countries (from four continents). The inclusion criterion was either phenotypes PiZZ, PiSZ or other severely deficient variants. Demographic and clinical information have been collected by a standardised questionnaire, translated for each country. Data are transferred to the AIR database at the Dept of Respiratory Medicine, University Hospital, Malmö, Sweden, either by e-mail or via two web-enabled questionnaires in HTML. All data are merged and checked for consistency and missing values. Collection of data started in 1999 and, by September 2005, data on 2,150 individual patients (1,180 male) had been submitted. Of these, 1,855 (84%) have phenotype PiZ, 181 (8%) PiSZ and 114 (5%) other rare Pi phenotypes. The mean age at inclusion was 49.8 yrs (SD = 13.3) and the majority were index cases (64.1%). The Alpha One International Registry is the largest specific alpha1-antitrypsin deficiency registry, fulfilling a major World Health Organization recommendation. The success related to the convergence of national registries into a common database creating a unique registry beyond geographic boundaries and encompassing alpha1-antitrypsin deficiency from various ethnic groups. ( view less ) View Full Abstract View Article Details   Related Articles The burden of symptoms of asthma, allergic rhinoconjunctivitis and atopic eczema in children and adolescents in six New Zealand centres: ISAAC Phase One. Mar 23, 2001 M I Asher,D Barry,T Clayton,J Crane,W D'Souza,P Ellwood,R P Ford,R Mackay,E A Mitchell,C Moyes,P Pattemore,N Pearce,A W Stewart,International Study of Asthma and Allergies in Childhood (ISAAC) Phase One AIM: To describe the burden of symptoms of asthma, allergic rhinoconjunctivitis and atopic eczema in children in six New Zealand centres. METHODS: The International Study of Asthma and Allergies in Childhood (ISAAC) Phase One was undertaken in Auckland, Bay of Plenty, Hawke's Bay, Wellington, Nelso... ( view more )n and Christchurch during 1992-1993. In each centre, approximately 3,000 six to seven year old children and 3,000 thirteen to fourteen year old adolescents were studied, a total of 37,592 participants. Both age groups answered written questionnaires and the adolescents a video questionnaire about asthma symptoms. RESULTS: The prevalences of symptoms were high, for asthma 25% and 30%, allergic rhinoconjunctivitis 10% and 19%, and atopic eczema 15% and 13% in each age group respectively. More than 40% of participants had symptoms in the last year of at least one condition, most commonly asthma. There were no significant differences among regions, except for six to seven year olds in Nelson who had significantly lower prevalences of some symptoms of asthma and allergic rhinoconjunctivitis. CONCLUSIONS: Asthma and allergies are common in New Zealand, with resultant morbidity and cost. However, there is little regional variation with the exception of lower rates in Nelson children. Explanations for these findings will be the subject of further studies. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Direct intramyocardial plasmid vascular endothelial growth factor-A165 gene therapy in patients with stable severe angina pectoris A randomized double-blind placebo-controlled study: the Euroinject One trial. Apr 5, 2005 Jens Kastrup,Erik Jørgensen,Andreas Rück,Kristina Tägil,Dietmar Glogar,Witold Ruzyllo,Hans Erik Bøtker,Dariusz Dudek,Viktor Drvota,Birger Hesse,Leif Thuesen,Pontus Blomberg,Mariann Gyöngyösi,Christer Sylvén,Euroinject One Group OBJECTIVES: In the Euroinject One phase II randomized double-blind trial, therapeutic angiogenesis of percutaneous intramyocardial plasmid gene transfer of vascular endothelial growth factor (phVEGF-A(165)) on myocardial perfusion, left ventricular function, and clinical symptoms was assessed. BACK... ( view more )GROUND: Evidence for safety and treatment efficacy have been presented in phase I therapeutic angiogenesis trials. METHODS: Eighty "no-option" patients with severe stable ischemic heart disease, Canadian Cardiovascular Society functional class 3 to 4, were assigned randomly to receive, via the NOGA-MyoStar system (Cordis Corp., Miami Lakes, Florida), either 0.5 mg of phVEGF-A(165) (n = 40) or placebo plasmid (n = 40) in the myocardial region showing stress-induced myocardial perfusion defects on (99m)Tc sestamibi/tetrofosmin single-photon emission computed tomography. RESULTS: No differences among the groups were recorded at baseline with respect to clinical, perfusion, and wall motion characteristics. After three months, myocardial stress perfusion defects did not differ significantly between the VEGF gene transfer and placebo groups (38 +/- 3% and 44 +/- 2%, respectively). Similarly, semiquantitative analysis of the change in perfusion in the treated region of interest did not differ significantly between the two groups. Compared with placebo, VEGF gene transfer improved the local wall motion disturbances, assessed both by NOGA (p = 0.04) and contrast ventriculography (p = 0.03). Canadian Cardiovascular Society functional class classification of angina pectoris improved significantly in both groups but without difference between the groups. No phVEGF-A(165)-related adverse events were observed; however, NOGA procedure-related adverse events occurred in five patients. CONCLUSIONS: The VEGF gene transfer did not significantly improve stress-induced myocardial perfusion abnormalities compared with placebo; however, improved regional wall motion, as assessed both by NOGA and by ventriculography, may indicate a favorable anti-ischemic effect. This result should encourage more studies within the field. Transient VEGF overexpression seems to be safe. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Vaginal birth after caesarean section versus elective repeat caesarean section: assessment of maternal downstream health outcomes. Jan 2006 Emmanuelle Paré,Joanne N Quiñones,George A Macones OBJECTIVE: To compare the maternal implications of strategies of vaginal birth after caesarean section (VBAC) attempt versus elective repeat caesarean section in women with one previous lower segment caesarean section. DESIGN: Decision model. POPULATION: Women with one prior low transverse caesarea... ( view more )n section who are eligible for trial of labour. METHODS: Two decision models were built: the first one applying to women planning only one more pregnancy, the second one applying to women planning two more pregnancies. Probability estimates for VBAC success rate and risks of uterine rupture, placenta praevia, placenta accreta and hysterectomy were extracted from the available literature. MAIN OUTCOME MEASURES: Hysterectomy for uterine rupture, placenta accreta or other indications. RESULTS: In the first model VBAC attempt led to a higher hysterectomy rate (267/100,000) compared with repeat caesarean section (187/100,000). However, in the second model a policy of elective repeat caesarean section led to higher cumulative hysterectomy rate: 1465/100,000 versus 907/100,000 for VBAC. The first model was robust to all but one variable in sensitivity analyses. The second model was robust to all variables in sensitivity analyses. CONCLUSIONS: These results indicate that long term reproductive consequences of multiple caesarean sections should be considered when making policy decisions regarding the risk-benefit ratio of VBAC. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles The effect of prematurity on vaginal birth after cesarean delivery: success and maternal morbidity. Mar 2005 Joanne N Quiñones,David M Stamilio,Emmanuelle Paré,Jeffrey F Peipert,Erika Stevens,George A Macones OBJECTIVE: We sought to compare vaginal birth after cesarean (VBAC) success and uterine rupture rates between preterm and term gestations in women with a history of one prior cesarean delivery. Our hypothesis was that preterm women undergoing VBAC were more likely to be successful and have a lower ... ( view more )rate of complications than term women undergoing VBAC. METHODS: We reviewed medical records of women with a history of a cesarean delivery who either attempted a VBAC or underwent a repeat cesarean delivery from 1995 through 2000 in 17 community and university hospitals. We collected information on demographics, medical and obstetric history, complications, and outcome of the index pregnancy. The primary analysis was limited to women with singleton gestations and one prior cesarean delivery. Statistical analysis consisted of bivariate and multivariable techniques. RESULTS: Among the 20,156 patients with one prior cesarean delivery, 12,463 (61%) attempted a VBAC. Mean gestational ages for the term and preterm women were 39.2 weeks and 33.9 weeks of gestation, respectively. The VBAC success rates for the term and preterm groups were 74% and 82%, respectively (P < .001). Multivariable analysis showed that the VBAC success was higher (adjusted odds ratio 1.54, 95% confidence interval 1.27-1.86) in preterm gestations. A decreased risk of rupture among preterm gestations was suggested in these results (adjusted odds ratio 0.28, 95% confidence interval 0.07-1.17; P = .08). CONCLUSION: Preterm patients undergoing a VBAC have higher success rates when compared with term patients undergoing a VBAC. Preterm patients undergoing VBAC may have lower uterine rupture rates. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles [Tesio catheters for long-term hemodialysis: our experience in a comarcal hospital] 2005 R Alvarez Navascués,L Quiñones,J Guerediaga INTRODUCTION: Good vascular access remains the cornerstone of effective hemodialysis treatment. The Tesio catheters has been proposed to be a reliable source of vascular access for the dialysis patients. SUBJECTS AND METHODS: We examined all Tesio catheters inserted over a 3-year period in our hosp... ( view more )ital. We obtained age, sex, dialysis duration, original nephropaty, vascular access history, complications, dialysis parameters, catheter function duration, confort level for patients and nurses, and death in all our cases. RESULTS: 33 catheters were inserted in 30 patients, 14 male and 16 female. Age 73,92 +/- 9,22 years. Dialysis duration, 25,64 +/- 53,45 months. Diabetic nephropaty 26,66%, NAE 40%, others 33,33%. First vascular access in 13 patients (43,33%), one previously fistula, 5 patients (16,66%), and more of one FAV, 12 patients (40%). We observed two bleeding cases, eight parcial trombosis, one total trombosis (non-function), six tunneled infection and two systemic infection. Only 3 catheters were removal. We obteined good dialysis parameters. Confort state for patients and nurses were satisfactory. Death 12 patients. Catheter function at the moment of study 16,76 +/-12,99 months. CONCLUSIONS: We concluded that Tesio catheters can provide excellent long-term vascular access for hemodialysis patients, especially in the older people and with some previous failure fistulas, with low complication rates and acceptable dialysis parameters and tolerance. However, the arteriovenous fistula remains the gold standard for long-term hemodialysis access. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Comparison of ethanol septal reduction therapy with surgical myectomy for the treatment of hypertrophic obstructive cardiomyopathy. Nov 15, 2001 S F Nagueh,S R Ommen,N M Lakkis,D Killip,W A Zoghbi,H V Schaff,G K Danielson,M A Quiñones,A J Tajik,W H Spencer OBJECTIVES: This study was designed to compare the hemodynamic efficacy of nonsurgical septal reduction therapy (NSRT) by intracoronary ethanol with standard therapy (surgical myectomy) for the treatment of hypertrophic obstructive cardiomyopathy (HOCM). BACKGROUND: Nonsurgical septal reduction the... ( view more )rapy has gained interest as a new treatment modality for patients with drug-refractory symptoms of HOCM; however, its benefits in comparison to surgery are unknown. METHODS: Forty-one consecutive NSRT patients at Baylor College of Medicine with one-year follow-up were compared with age- and gradient-matched septal myectomy patients at the Mayo Clinic. All patients had left ventricular outflow obstruction with a resting gradient > or =40 mm Hg and none had concomitant procedures. RESULTS: There were no baseline differences in New York Heart Association class, severity of mitral regurgitation, use of cardiac medications or exercise capacity. One death occurred during NSRT because of dissection of the left anterior descending artery. At one year, all improvements in both groups were similar. After surgical myectomy, more patients were on medications (p < 0.05) and there was a higher incidence of mild aortic regurgitation (p < 0.05). After NSRT, the incidence of pacemaker implantation for complete heart block was higher (22% vs. 2% in surgery; p = 0.02). However, seven of the nine pacemakers in the NSRT group were implanted before a modified ethanol injection technique and the use of contrast echocardiography. CONCLUSIONS: Nonsurgical septal reduction therapy resulted in a significantly higher incidence of complete heart block, but the risk was reduced with contrast echocardiography and slow ethanol injection. Surgical myectomy resulted in a significantly higher incidence of mild aortic regurgitation. Nonsurgical septal reduction therapy, guided by contrast echocardiography, is an effective procedure for treating patients with HOCM. The hemodynamic and functional improvements at one year are similar to those of surgical myectomy. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles [Histologic aspects of seborrheic keratosis] 1990 N Pérez-Oliva,J Toribio,P A Quiñones The histopathological aspects of seborrheic keratosis have been studied in order to establish a basis to their classification upon structural morphology and cytology. The 210 seborrheic keratosis studied could be classified in several patterns among which we must point out the three most important ... ( view more )ones: hyperkeratotic, adenoid and acanthotic. This last one can offer two very different images: uniform acanthotic (this one including at the same time, a variant of "small basal cells") and reticular acanthotic. Special mention has to be made as well to the activated and pure forms which, though being the result of evolutive accidental phenomena, no doubt they have very particular and distinctive histopathological aspects. Further, other variants are discussed such a clonal and acantholytic seborrheic keratosis, as well as the significance of inverted follicular keratosis and of melanoacanthoma. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Is eczema really on the increase worldwide? Apr 2008 Hywel Williams,Alistair Stewart,Erika von Mutius,William Cookson,H Ross Anderson,International Study of Asthma and Allergies in Childhood (ISAAC) Phase One and Three Study Groups BACKGROUND: It is unclear whether eczema prevalence is truly increasing worldwide. OBJECTIVE: We sought to investigate worldwide secular trends in childhood eczema. METHODS: Children (n = 302,159) aged 13 to 14 years in 105 centers from 55 countries and children aged 6 to 7 years (n = 187,943) in 6... ( view more )4 centers from 35 countries were surveyed from the same study centers taking part in Phase One and Three of the International Study of Asthma and Allergies in Childhood by using identical validated and translated questionnaires. Eczema was defined as an itchy, relapsing, flexural skin rash in the last 12 months, and it was termed severe eczema when it was associated with 1 or more disturbed nights per week. RESULTS: Annual prevalence changes in relation to average prevalence across Phase One and Three were generally small and differed in direction according to the age of the participants and world region. For children 13 to 14 years old, eczema symptom prevalence decreased in some previously high-prevalence centers from the developed world, such as the United Kingdom and New Zealand, whereas centers with previously high prevalence rates from developing countries continued to increase. In the children 6 to 7 years old, most centers showed an increase in current eczema symptoms. Similar patterns to these were present for severe eczema at both ages. CONCLUSION: The epidemic of eczema seems to be leveling or decreasing in some countries with previously high prevalence rates. The picture elsewhere is mixed, with many formerly low-prevalence developing countries experiencing substantial increases, especially in the younger age group. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Enolase as a plasminogen binding protein in Leishmania mexicana. Nov 2007 Gilmer Vanegas,Wilfredo Quiñones,Cesar Carrasco-López,Juan Luis Concepción,Fernando Albericio,Luisana Avilán Enolase is a glycolytic and gluconeogenic enzyme also found on the surface of several eukaryotic and prokaryotic cells where it acts as plasminogen binding protein. Leishmania mexicana, one of the causative agents of Leishmaniasis, binds plasminogen and, in this parasite, enolase has been previousl... ( view more )y found associated with the external face of the plasma membrane. In this work, we show that the purified recombinant enolase has plasminogen binding activity indicating that, at the surface of the parasite, the protein may function as one of the plasminogen receptors. An internal motif (249)AYDAERKMY(257), similar to the nine amino-acid internal plasminogen-binding motif in Streptococcus pneumoniae enolase, is responsible for plasminogen interaction with the parasite enolase. Anti-enolase antibodies inhibited up to 60% of plasminogen binding on live parasites indicating that enolase act as a plasminogen receptor on the parasite. The fact that enolase acts as a possible plasminogen receptor in vivo makes this protein a promising target for therapy. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles A protocol for the calibration of gamma cameras to estimate internal contamination in emergency situations. 2007 B M Dantas,E A Lucena,A L A Dantas,F Araújo,A M O Rebelo,M Terán,A Paolino,J C Hermida,A M Rojo,J A Puerta,J Morales,G M L Bejerano,M Alfaro,M A Ruiz,R Videla,O Piñones,S González,T Navarro,D Melo,R Cruz-Suárez The concern about accidents involving radioactive materials has led to the search of alternative methods to quickly identify and quantify radionuclides in workers and in the population. One of the options to face up an eventual demand for mass monitoring of internal contamination is the use of a nu... ( view more )clear medicine diagnostic equipment known as gamma camera, a device used to scan patients who have been administered specific amounts of radioactive materials for medical purposes. Although the gamma camera is used for image diagnosis, it can be calibrated with anthropomorphic phantoms or point sources for the quantification of radionuclide activities in the human body. This work presents a protocol for the calibration of gamma cameras for such application. In order to evaluate the suitability of this type of equipment, a gamma camera available in a public hospital located in Rio de Janeiro was calibrated for the in vivo measurement of (131)I. The calibration includes the determination of detection efficiencies and minimum detectable activities for each radionuclide. The results show that the gamma camera presents enough sensitivity to detect activity levels corresponding to effective doses below 1 mSv. The protocol is the basis to establish a network of Nuclear Medicine Centres, located in public hospitals in eight countries of Latin America (Argentina, Brazil, Colombia, Cuba, Chile, Mexico, Peru and Uruguay) and in Spain that could be requested to collaborate in remediation actions in the event of an accident involving incorporation of radioactive materials. This protocol is one of the most significant outputs of the IAEA-ARCAL Project (RLA/9/049-LXXVIII) aimed to the Harmonization of Internal Dosimetry Procedures. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles [The Small Worlds and Floyd's algorithms: a way to study scientific collaboration] Feb 2006 María Peñaranda Ortega,Rafael López Serano,Elena Quiñones Vidal,Juan José López García Many proposals from the analysis of social networks focused on the study of scientific collaboration have been made recently. The Small Worlds theory seems to be the most efficient to study the inner features of the scientific community. Those researches have demonstrated that small communities are... ( view more ) based on some key individuals who connect some groups which, on the contrary, would be disconnected. One of the disadvantages from the perspective of the analysis of networks is the lack of researches of particular nodes. With the implementation of a pseudocode algorithm of Floyd, we try to avoid this. To study how a small community is formed and, as a research of one case, we observe the invisible college which is formed when connecting the fifteen most productive authors of the Journal of Personality and Social Psychology . ( view less ) View Full Abstract View Article Details   Related Articles [Identification and typification of the human papilloma virus in women using the "Timely Detection of Cancer" program in Durango, Mexico] Sep 2003 E Rosalba Rodríguez-Reyes,Ricardo M Cerda-Flores,N Patricia Solís Ríos,Juan M Quiñones Pérez,Elva I Cortés-Gutiérrez OBJECTIVE: In Mexico, the cervical carcinoma is a public health problem, representing more of 36% of the neoplasms. This carcinoma has been etiologically associated with the human papillomavirus (HPV) infection and the polymerase chain reaction (PCR) has been considered as one of the most sensitive... ( view more ) methods for its detection. The aim of this study was to determine the HPV types by PCR-RFLPs in 111 women attending in the DOC programs in Gomez Palacio, Durango. METHODS: DNA was extracted from cervix-vaginal samples as previously described and HPV were detectad using the primers MY09 and MY11. Viral type was determined according to analysis RFLPs. RESULTS: The cito-histopatologic diagnoses showed that 93 women did not present cervical alteration: 91 (91.85%) were negative HPV and two (2.15%) were VPH positive (low risk). In contrast, 18 women showed cervical alterations; 17 (94.44%) were VPH positive (11 of low risk and 6 of high risk) and only one did not present HPV infection. CONCLUSION: The distribution of types HPV observed in Gomez Palacio, Durango is according to previous study. This is essential a estimation in the development of strategies for prevention of cervical carcinoma in our region. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Regulated expression of sodium-dependent glutamate transporters and synthetase: a neuroprotective role for activated microglia and macrophages in HIV infection? Apr 2003 Gabriel Gras,Fabrice Chrétien,Anne-Valérie Vallat-Decouvelaere,Gwenaelle Le Pavec,Fabrice Porcheray,Christophe Bossuet,Cathie Léone,Patricia Mialocq,Nathalie Dereuddre-Bosquet,Pascal Clayette,Roger Le Grand,Christophe Créminon,Dominique Dormont,Anne-Cécile Rimaniol,Françoise Gray It is now widely accepted that neuronal damage in HIV infection results mainly from microglial activation and involves apoptosis, oxidative stress and glutamate-mediated neurotoxicity. Glutamate toxicity acts via 2 distinct pathways: an excitotoxic one in which glutamate receptors are hyperactivate... ( view more )d, and an oxidative one in which cystine uptake is inhibited, resulting in glutathione depletion and oxidative stress. A number of studies show that astrocytes normally take up glutamate, keeping extracellular glutamate concentration low in the brain and preventing excitotoxicity. This action is inhibited in HIV infection, probably due to the effects of inflammatory mediators and viral proteins. Other in vitro studies as well as in vivo experiments in rodents following mechanical stimulation, show that activated microglia and brain macrophages express high affinity glutamate transporters. These data have been confirmed in chronic inflammation of the brain, particularly in SIV infection, where activated microglia and brain macrophages also express glutamine synthetase. Recent studies in humans with HIV infection show that activated microglia and brain macrophages express the glutamate transporter EAAT-1 and that expression varies according to the disease stage. This suggests that, besides their recognized neurotoxic properties in HIV infection, these cells also have a neuroprotective function, and may partly make up for the inhibited astrocytic function, at least temporarily. This hypothesis might explain the discrepancy between microglial activation which occurs early in the disease, and neuronal apoptosis and neuronal loss which is a late event. In this review article, we discuss the possible neuroprotective and neurotrophic roles of activated microglia and macrophages that may be generated by the expression of high affinity glutamate transporters and glutamine synthetase, 2 major effectors of glial glutamate metabolism, and the implications for HIV-induced neuronal dysfunction, the underlying cause of HIV dementia. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles A 1-year, three-couple expedition as a crew analog for a Mars mission. Sep 2002 Gloria R Leon,Mera M Atlis,Deniz S Ones,Graeme Magor This study assessed the intrapersonal and interpersonal functioning of a three-couple expedition group that included a 2 1/2-year-old child which was ice-locked on a boat in the High Arctic during a major portion of the expedition. Personality assessment indicated that team members were generally w... ( view more )ell adjusted, scoring relatively higher on well-being and achievement and relatively lower on stress reactivity. Weekly mood ratings showed that the group exhibited significantly higher positive than negative affect. Reported negative events were relatively most frequent at the beginning of the Arctic stay and toward the end of the darkness period and were lowest during the initial darkness interval. The period of darkness had both a salutary and negative impact. A highly important means of coping with stress was seeking emotional support from one's partner. Selection of couples with strong bonds with their partner appears to be one viable approach for crew selection for long-duration missions. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Phlebotomine sandflies and leishmaniasis risks in Colombian coffee plantations under two systems of cultivation. Dec 2001 Alexande,L A Agudelo,F Navarro,F Ruiz,J Molina,G Aguilera,M L Quiñones The phlebotomine sandfly fauna of traditional (shaded) and intensified (unshaded) coffee plantations in Colombia was sampled by a variety of methods and the species composition and density under the two systems compared. Twenty species of Lutzomyia sandflies (Diptera: Psychodidae: Phlebotominae) we... ( view more )re collected, of which eight were found only in the 'Coffee Axis' ('Eje Cafetero') of the departments of Caldas, Risaralda and Quindio, six were exclusive to the department of Norte de Santander and six occurred in both regions. Four species were collected only in traditional plantations and two exclusively in intensified ones. At least 13 species occurred in both plantation types. Fifteen species are opportunistic man-biters and eight are suspected vectors of leishmaniasis caused by Le. braziliensis, Le. panamensis or Le. mexicana. Seven species were collected inside houses and may be involved in intradomiciliary transmission of Leishmania. The dominant species in Norte de Santander was Lu. spinicrassa, which made up 93.8% of all the sandflies collected in this department. This species was absent from the Eje Cafetero and a number of others among the 15 recorded there might be responsible for Leishmania transmission in this region, including Lu. trapidoi, Lu. yuilli, Lu. gomezi, L. hartmanni and Lu. ovallesi. Sandfly population densities were significantly higher in traditional plantations than in intensified ones. Residents of traditional plantations were able to describe sandflies in significantly more detail than those of intensified plantations, based on seven basic characteristics related to the appearance and biting behaviour of the insects. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Influence of the pH on the behavior of an imprinted polymeric stationary phase--supporting evidence for a binding site model. Aug 24, 2001 Y Chen,M Kele,I Quiñones,B Sellergren,G Guiochon The equilibrium isotherms of the two enantiomers of phenylalanine anilide (PA) were measured by conventional frontal analysis at three different pH on a thermally-treated imprinted stationary phase selective for the L enantiomer. The first of these pH (buffer pH=3.0, pH(app)=4.0) is well below the ... ( view more )apparent pKa (6.4) of the two solutes, the second (buffer pH=5.8, pH(app)=7.0) slightly below this pKa, and the third (buffer pH=7.0, pH(app)=8.3) well above it. The experimental data were fitted to several isotherm models. The best estimates of the parameters of these models are reported and discussed. The corresponding isotherms are compared with the experimental ones. The contributions of the enantioselective and nonselective interactions could be separated. The results obtained show that the saturation capacity is always smaller for D-PA than for L-PA, the template. The analytical separation is best at pH=3.0 because of a good separation factor (2.82) and short retention times. A good compromise between the resolution and the saturation capacity is obtained at pH=5.8, for which the best preparative separation is found. Both analytical and preparative results are poor at pH=7.0 because the separation factor is low (1.32). At this pH, the isotherm remains nearly linear in the whole concentration range accessible to measurements. The number of nonselective sites increases with increasing mobile phase pH slightly faster than the number of selective sites, suggesting different pKa ranges for the two type of sites. Moreover, the binding energy and the homogeneity of the selective sites decreases with increasing pH. These results agree with a binding site model involving more than one carboxylic acid group, providing charge complementarity and hydrogen bond donors for binding of L-PA. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Contribution of the periosteum to bone formation in guided bone regeneration. A study in monkeys. Dec 2000 D Weng,M B Hürzeler,C R Quiñones,A Ohlms,R G Caffesse The periosteum has been referred to as a protective barrier in the regeneration of bone defects. The objective of this study was to determine the contribution of periosteum as a natural barrier to bone formation in guided bone regeneration. Mucoperiosteal flaps were elevated bilaterally on the bucc... ( view more )al aspect of the mandibular angle in 5 cynomolgus monkeys. Bleeding was induced by perforating the cortical bone. A hemispherical titanium mesh was fixed over the areas thus creating a void 5 mm in height between the mesh and the bone surface. One one side the mesh was covered with an ePTFE membrane (test side). The contralateral side did not receive further treatment (control side). After 4 month healing, histomorphometric analyses were used to determine the percentage of new bone in the void underneath the mesh, and the ratio between mineralized tissue and marrow spaces in new and old bone. The mean percentage of new bone tissue was 77.2 +/- 7.5% for the test sides and 68.6 +/- 8.4% for the control sides (P = 0.018, t-test). This new bone contained 80.0 +/- 3.6% mineralized tissue in the test group and 82.5 +/- 5.0% in the control group (P > 0.05, t-test). In both groups the newly formed bone exhibited significantly less mineralized tissue than the old bone (P < 0.05, t-test). It is concluded from this study that new bone formation was enhanced by the additional use of an ePTFE membrane under a periosteum-lined mucoperiosteal flap when space maintenance was excluded as a critical factor. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles [Depression in the elderly and the role of family dynamics] Mar 15, 2000 L García Lozano,F Mérida Quiñones,I Mestre Reoyo,M D Gallego Parrilla,A J Duarte Romero,R G Mesa Ramos,C Rodríguez Escalera OBJECTIVE: The objective was to find the relationship between the lived experience within the family and depression in the elderly. DESIGN: The study had a crossover and descriptive design. SETTING: Carranque and Campanillas Health Districts, Málaga. PATIENTS: The target population was the over 65'... ( view more )s. The sample consisted of 97 people attended at 2 health centres, one rural and one urban. MEASUREMENTS AND MAIN RESULTS: The main study variable was the results on the Yesavage Geriatric Depression Scale (GDS), which were contrasted through multiple linear regression with the variables of age, sex, marital status, tobacco dependency, number of people living together, presence of the children in the home (concretely, daughters), family income, ownership of the home, social support network, and Apgar Family II. The results showed that the GDS correlated only with the results of the Apgar Family II (p = 0.00003). CONCLUSIONS: When tackling the depression of elderly people in primary care, it is absolutely vital to look at the family context, as this is a factor strongly linked to the depression. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Prevalence of skin reactions to aeroallergens in asthmatics of Puerto Rico. Dec 1997 F Montealegre,C Quiñones,V Michelen,M Bayona,E Fernández-Caldas,O Vazques,F Colón,D Chardón,M García In Puerto Rico, although a high prevalence of asthma has been reported, the sensitization rates to aeroallergens in these patients is unknown. The purpose of this study using a case control design, was to determine and compare the rates of sensitization to common aeroallergens in an asthmatic popul... ( view more )ation of 576 asthmatics and 144 healthy controls. A skin prick test was conducted using standardized extracts of Dermatophagoides farinae (Df) and D. pteronyssinus (Dp), house dust (HD), cat hair and epithelium (CT), dog hair and dander (DG), grass pollen mix (PG), tree pollen mix (PT), weed pollen mix (PW), Aspergillus mix (AM), mold mixes A (MA) and B (MB), Periplaneta americana (PA) and Alternaria-Hormodendrum mix (AH). In addition, an extract from the domestic mite Blomia tropicalis (Bt) was also used. A wheal > or = 3 mm2 was considered a positive reaction. In addition, a standardized questionnaire was administered and a preliminary domestic mite identification survey was conducted. The analysis of the data showed that 85.8% of the asthmatics had at least one positive reaction and 61.6% of them had positive skin reactions to atleast one mite species. Asthmatics reacted to domestic mites 6.19 times more than the control group (p < 0.0001) and was the largest significant difference found in this study for any allergen tested. Preliminary identification of the acarologic fauna in southern Puerto Rico demonstrated that Blomia tropicalis, Dermatophagoides pteronyssinus, D. farinae and E. maynei are the dominant domestic mite species found in homes of asthmatic individuals. These results demonstrate that domestic mites are a very important source of sensitizing aeroallergens for asthmatic patients in Puerto Rico. Based upon the mite survey, Blomia tropicalis plays an important role in allergic sensitization, in addition to Dermatophagoides pteronyssinus and D. farinae. The skin prevalence to pollens and to molds may not reflect the true prevalence of sensitization to these allergens. Pollen identification and counts, and a survey of microflora of Puerto Rico are needed in order to identify and validate important allergens that eventually could be incorporated into a more appropriate panel for testing sensitization in susceptible individuals. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Maxillary sinus augmentation using different grafting materials and dental implants in monkeys. Part I. Evaluation of anorganic bovine-derived bone matrix. Dec 1997 M B Hürzeler,C R Quiñones,A Kirsch,C Gloker,P Schüpbach,J R Strub,R G Caffesse The aim of this study was to evaluate clinically, histologically and histometrically the use of anorganic bovine bone matrix (i.e. Bio-oss) as a grafting material for maxillary sinus augmentation procedures. In 4 adult male rhesus monkeys (i.e. Macaca mulatta) the 1st, 2nd and 3rd maxillary molars ... ( view more )on one side of the jaws were extracted. The remaining bone between the alveolar crest and the bottom of the sinus was then reduced to 3-4 mm. After 3 months, maxillary sinus augmentation procedures were performed on one side of the jaws in each monkey and the sinuses were grafted with the bovine bone matrix. At that time, 2 IMZ pure titanium plasma coated implants were immediately placed into the augmented sinuses (i.e. simultaneous implants-loaded group). After 4 months, 2 additional similar implants were placed into these previously augmented sinuses (i.e. delayed implants-loaded group). Four months later, the abutment connection was performed and all 4 implants were loaded with a gold-alloy bridge for 6 months (i.e. until sacrifice of the animals). The contralateral side of each monkey received the same treatment with the exception that the extractions were performed 7 months after those in the opposite side and that the implants in this side were not loaded. Thus, 2 additional study groups (i.e. simultaneous implants-unloaded group and delayed implants-unloaded group) were obtained. Clinically, all loaded implants were stable at the day of sacrifice. Histologically, the grafted sinuses exhibited significant bone formation with integration of the bovine bone matrix particles to the new bone. Direct mineralized bone-to-implant contact was greater for the delayed implant placement groups than for the implants installed simultaneously with the sinus augmentation. Furthermore, the percentage of direct mineralized bone-to-implant contact was greater in the residual bone than in the augmented area. It was concluded that the anorganic bovine bone matrix facilitated bone formation and implant osseointegration in the augmented sinuses and that the delayed implant placement in combination with the sinus augmentation procedure seemed to be preferable. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Maxillary sinus augmentation using different grafting materials and osseointegrated dental implants in monkeys. Part II. Evaluation of porous hydroxyapatite as a grafting material. Dec 1997 C R Quiñones,M B Hürzeler,P Schüpbach,A Kirsch,P Blum,R G Caffesse,J R Strub The aim of this study was to evaluate clinically, histologically and histometrically the use of porous hydroxyapatite (i.e. Interpore-200) as a bone grafting material for maxillary sinus augmentation procedures. In 4 adult male rhesus monkeys (i.e. Macaca mulatta) the 1st, 2nd and 3rd maxillary mol... ( view more )ars on one side of the jaws were extracted and the remaining bone between the alveolar crest and the bottom of the sinus was reduced to 3-4 mm. After 3 months, maxillary sinus augmentation procedures were performed on one side of the jaws in each monkey, and the sinuses grafted with the porous hydroxyapatite. Two IMZ titanium plasma-sprayed cylinder implants were then immediately placed into the augmented sinus (i.e. simultaneous implants-loaded group). After 4 months, 2 additional similar implants were placed into the previously augmented sinuses (i.e. delayed implants-loaded group). Four months later, the abutment connection was performed and all 4 implants were loaded with a gold-alloy bridge for 6 months (i.e. until sacrifice). The contralateral side of each monkey received the same treatment with the exception that the extractions were performed 7 months after those in the opposite side and that the implants in this side were not loaded. Thus, 2 additional study groups (i.e. simultaneous implants-unloaded group and delayed implants-unloaded group) were obtained. Clinically, all loaded implants were stable at the day of sacrifice. Histologic analysis demonstrated a significant amount of new bone formation in the augmented sinuses. Porous hydroxyapatite graft particles appeared to be integrated to the new bone. The percentage of direct mineralized bone-to-implant contact in the augmented area was greater on the delayed-placed implants than on the simultaneously-placed implants. Also, the percentage of direct mineralized bone-to-implant contact was greater in the residual bone than in the augmented area. It was concluded that this porous hydroxyapatite bone graft enhanced bone formation and bone-to-implant contact in the augmented sinuses and that the delayed implant placement in combination with the sinus augmentation procedure appears to result in a higher percentage of direct mineralized bone-to-implant contact. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Embolization of dural cavernous fistulas via superior ophthalmic vein approach. May 1997 D Quiñones,G Duckwiler,P Y Gobin,R A Goldberg,F Viñuela PURPOSE: To present the results of our treatment of dural cavernous sinus fistulas with surgical exposure of the superior ophthalmic vein (SOV), retrograde venous catheterization, and coil embolization of the cavernous sinus. METHODS: Twelve patients with dural cavernous sinus fistulas were treated... ( view more ) via a retrograde transvenous SOV approach in our hospital during a 3-year period. All patients had been referred by ophthalmologists because of secondary glaucoma and decreased visual acuity. Angiography showed preferential venous drainage of the dural cavernous sinus fistulas to an enlarged ipsilateral SOV. A total of 13 SOV exposures were performed, one patient with bilateral fistulas required bilateral treatment. The vein was surgically exposed by an ophthalmologist and then catheterized. Platinum coils were delivered through a microcatheter at the fistula site and into the root of the SOV, until there was complete angiographic closure. RESULTS: Catheterization and embolization were successful in 12 of the 13 patients, with complete angiographic occlusion of the fistula. Two patients with bilateral fistulas had transient worsening of symptoms on the contralateral side. Three patients required follow-up angiography. No early complications occurred, and late complications were minor in two cases. All patients except one with long-standing symptoms recovered premorbid visual acuity. At follow-up, 11 (92%) of the 12 embolized fistulas remained occluded. CONCLUSIONS: Retrograde catheterization of the SOV and embolization of the cavernous sinus with coils is a direct, safe, and efficient way to occlude dural cavernous sinus fistulas. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles [Assessment of 200 critically ill transferred children at a pediatric intensive care unit] Sep 1996 F Rubio Quiñones,A Hernández González,S Quintero Otero,J Pérez Ruiz,C Ruiz Ruiz,A Seidel,S Fernández O'Dogherty,S Pantoja Rosso BACKGROUND: Pediatric intensive care units have developed as treatment areas with a concentration of specialized equipment and personnel. Critically ill children often need to be moved to and from these critical care areas for diagnostic or therapeutic procedures. Such transport may pose additional... ( view more ) risk to the critically ill patient. PATIENTS AND METHODS: In order to assess the problems encountered in our transport process, a prospective study was performed. A questionnaire was undertaken to evaluate the transport of critically ill children hospitalized in the Pediatric Intensive Care Unit of the Hospital Universitario Puerta del Mar from Cádiz over an eleven month period. RESULTS: Two hundred children transported were evaluated. Forty-seven (23.5%) were interhospital transported patients and one hundred fifty-three (76.5%) were intrahospital transported patients. The most common type of intrahospital transport involves transfers between the operating room and the intensive care unit (73 patients, 36.5%). Deterioration in respiratory, cardiovascular and other physiological systems was registered in twenty-two patients (11%). One hundred four equipment-related mishaps were noted in eighty-six patients (43%) during the transport process. Dislodgement of intravenous catheters, loss of oxygen supply, endotracheal tube problems and equipment malfunction were the most common mishaps noted. CONCLUSIONS: Our results would suggest that more training regarding the transport of the critically ill child are needed in our area. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Cross-talk between different enhancer elements during mitogenic induction of the human stromelysin-1 gene. Jul 26, 1996 M Kirstein,L Sanz,S Quiñones,J Moscat,M T Diaz-Meco,J Saus Platelet-derived growth factor (PDGF) induces the expression of human stromelysin-1, a matrix metalloproteinase involved in tumor invasion and metastasis. Here it is shown that stromelysin-1 gene induction by PDGF depends on Ras and involves three previously identified promoter elements (the strome... ( view more )lysin-1 PDGF-responsive element (SPRE) site, the two head-to-head polyomavirus enhancer A-binding protein-3 (PEA3) sites, and the activator protein-1 (AP-1) binding site). During mitogenic induction, these responsive elements appear to be organized in two independent transcriptional units, SPRE-AP-1 and PEA3-AP-1, which result from specific element cross-talking. Interestingly, expression of a dominant negative mutant of Raf-1 significantly interfered with the induction through PEA3-AP-1 but not with that operating through SPRE-AP-1. Conversely, only the induction operating through SPRE-AP-1 was affected significantly by the expression of a dominant negative mutant of the atypical lambda/iota protein kinase C (lambda/iotaPKC). These data strongly suggest that the signal triggered by PDGF flows through Ras and bifurcates toward two distinct pathways, one operating through Raf and involving PEA3-AP-1 and the other one Raf-independent, operating through lambda/iotaPKC and SPRE-AP-1. Furthermore, we present evidence suggesting that the novel SPRE-binding transcription factor SPBP cross-couples with c-Jun to transactivate the SPRE site. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Page 1 of 23 1 2 3 4 > Last >> (559 articles found)

      
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