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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 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 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 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 96) Sort By: Publication Date Relevance Took: 1.529 seconds to search 17,750,454  Action: Copy Results to new Clipboard Build Search Link Page 1 of 4 1 2 3 4 > (96 articles found) Enhanced G protein activation in immortalized lymphoblasts from patients with essential hypertension. Aug 1995 W Siffert,D Rosskopf,A Moritz,T Wieland,S Kaldenberg-Stasch,N Kettler,K Hartung,S Beckmann,K H Jakobs Epstein-Barr virus-immortalized B lymphoblasts obtained from hypertensive patients with enhanced Na+/H+ exchanger activity (HT cells) proliferate distinctly faster upon serum stimulation than those from normotensive controls with low exchanger activity (NT cells) (Rosskopf, D., E. Frömter, and W. S... ( view more )iffert. 1993. J. Clin. Invest. 92:2553-2559). Stimulation with platelet-activating factor (PAF) as well caused an enhanced proliferation of HT cells. In analyzing possible differences in signal transduction between the immortalized NT and HT lymphoblasts, we observed that cell stimulation with PAF and somatostatin caused a twofold higher increase in [Ca2+]i in HT than in NT cell lines. This difference was completely abrogated by pertussis toxin (PTX) treatment. Furthermore, PAF-stimulated formation of inositol 1,4,5-trisphosphate (IP3) was twofold enhanced in HT cell lines. On the other hand, PAF receptor density and affinity, total cellular phospholipase C activity, expression of PTX-sensitive G proteins, and control binding of the stable GTP analogue, guanosine 5'-[gamma-thio]triphosphate (GTP gamma S), to membrane G proteins were not different in NT and HT cell lines. However, PAF- and mastoparan-stimulated binding of GTP gamma S to G proteins, which was fully PTX-sensitive, was 2.5-fold higher in HT than NT cell lines. These data suggest an enhanced receptor-mediated activation of PTX-sensitive G proteins despite unchanged receptor and G protein expression. Thus, this study not only suggests that enhanced signal transduction and cell proliferation are abnormalities in a certain group of patients with essential hypertension but also explains these findings as a result of an enhanced G protein activation in this common disorder. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Disposition of ezetimibe is influenced by polymorphisms of the hepatic uptake carrier OATP1B1. Jul 2008 Stefan Oswald,Jörg König,Dieter Lütjohann,Thomas Giessmann,Heyo K Kroemer,Christian Rimmbach,Dieter Rosskopf,Martin F Fromm,Werner Siegmund OBJECTIVES: Genetic variability in hepatic uptake was recently shown to influence the disposition and cholesterol-lowering effects of statins. Ezetimibe, an inhibitor of the intestinal cholesterol uptake protein Niemann-Pick C 1 like 1, is another drug for which genetic polymorphisms of hepatic org... ( view more )anic anion transporting polypeptides (OATPs) are expected to be of clinical relevance because ezetimibe undergoes intensive enterohepatic circulation for which hepatic uptake transporters may be rate-limiting determinants. METHODS: Using OATP1B3-, OATP2B1-, and OATP1B1-transfected HEK cells, including the OATP1B1 variants OATP1B1*1b and OATP1B1*5, we measured the uptake of ezetimibe and its glucuronide and we analyzed the competition with the common OATP-substrate bromosulfophthalein. Disposition and sterol-lowering effects of 20-mg ezetimibe were measured in 35 healthy participants genotyped for OATP1B1, ABCB1, ABCC2, and UGT1A1. RESULTS: Ezetimibe glucuronide inhibited bromosulfophthalein uptake in all OATP-transfected cells (50% inhibitory concentration (IC50): 0.14-0.26 mumol/l) whereas ezetimibe was 30-100 times less potent. Only the glucuronide was accumulated significantly in cells expressing OATP1B1 and OATP2B1. Its uptake in cells expressing OATP1B1*1b and *5 was reduced. In-vivo studies showed there was a gene-dose-dependent decrease in the area under the curve of ezetimibe in participants with the OATP1B1*1b protein (*1a/*1a, N=12, 112+/-66 ngxh/ml vs. *1a/*1b, N=8, 88+/-39 ngxh/ml vs. *1b/*1b, N=5, 55+/-18 ngxh/ml; Jonkheere-Terpstra, P=0.041) and a tendency for increased glucuronide exposure (704+/-296 vs. 878+/-369 vs. 1059+/-363 ngxh/ml; P=0.092). Fecal ezetimibe excretion was significantly decreased whereas renal glucuronide excretion was increased in carriers of *1b/*1b. Fecal excretion was also diminished in carriers of OATP1B1*5 and *15. The sterol-lowering effect of ezetimibe was not influenced by OATP1B1 polymorphisms. CONCLUSION: Pharmacokinetics of ezetimibe is influenced by OATP1B1 polymorphisms in healthy participants after single dose administration. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles SLC2A9 influences uric acid concentrations with pronounced sex-specific effects. Apr 2008 Angela Döring,Christian Gieger,Divya Mehta,Henning Gohlke,Holger Prokisch,Stefan Coassin,Guido Fischer,Kathleen Henke,Norman Klopp,Florian Kronenberg,Bernhard Paulweber,Arne Pfeufer,Dieter Rosskopf,Henry Völzke,Thomas Illig,Thomas Meitinger,H-Erich Wichmann,Christa Meisinger Serum uric acid concentrations are correlated with gout and clinical entities such as cardiovascular disease and diabetes. In the genome-wide association study KORA (Kooperative Gesundheitsforschung in der Region Augsburg) F3 500K (n = 1,644), the most significant SNPs associated with uric acid con... ( view more )centrations mapped within introns 4 and 6 of SLC2A9, a gene encoding a putative hexose transporter (effects: -0.23 to -0.36 mg/dl per copy of the minor allele). We replicated these findings in three independent samples from Germany (KORA S4 and SHIP (Study of Health in Pomerania)) and Austria (SAPHIR; Salzburg Atherosclerosis Prevention Program in Subjects at High Individual Risk), with P values ranging from 1.2 x 10(-8) to 1.0 x 10(-32). Analysis of whole blood RNA expression profiles from a KORA F3 500K subgroup (n = 117) showed a significant association between the SLC2A9 isoform 2 and urate concentrations. The SLC2A9 genotypes also showed significant association with self-reported gout. The proportion of the variance of serum uric acid concentrations explained by genotypes was about 1.2% in men and 6% in women, and the percentage accounted for by expression levels was 3.5% in men and 15% in women. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Pegylated granulocyte colony-stimulating factor mobilizes CD34+ cells with different stem and progenitor subsets and distinct functional properties in comparison with unconjugated granulocyte colony-stimulating factor. Mar 2008 Ingmar Bruns,Ulrich Steidl,Johannes C Fischer,Akos Czibere,Guido Kobbe,Sascha Raschke,Raminder Singh,Roland Fenk,Michael Rosskopf,Sabrina Pechtel,Arndt von Haeseler,Peter Wernet,Daniel G Tenen,Rainer Haas,Ralf Kronenwett BACKGROUND: Pegylated granulocyte colony-stimulating factor (G-CSF) has recently been introduced as a new compound for mobilization of CD34(+) hematopoietic stem and progenitor cells. In this study, we compared the molecular and functional characteristics of CD34(+) cells mobilized by pegylated G-C... ( view more )SF with those mobilized by unconjugated G-CSF. DESIGN AND METHODS: Gene expression of immunomagnetically enriched CD34(+) cells from leukapheresis products of patients who were given pegylated-G-CSF or unconjugated G-CSF was analyzed using Affymetrix HG Focus microarrays and quantitative reverse transcriptase polymerase chain reaction. Flow cytometry and fluorescence activated cell sorting was conducted to assess the CD34(+) subset composition and to obtain Lin(-), CD34(+), CD38(-) hematopoietic stem cells. Cell cycle assays and clonogenic assays were performed for functional corroboration. RESULTS: Pegylated G-CSF and unconjugated G-CSF mobilized CD34(+) and hematopoietic stem cells with different molecular phenotypes and functional properties. The CD34(+) cells mobilized by pegylated G-CSF had higher expression levels of genes indicative of early hematopoiesis, including HOXA9, MEIS1 and GATA3. We found lower expression of genes characteristic of erythroid and later stages of myeloid differentiation and a lower functional burst-forming unit erythroid/colony-forming unit-granulocyte-macrophage ratio. Consistently, greater numbers of hematopoietic stem cells and common myeloid progenitors and fewer megakaryocyte-erthrocyte progenitors were found in the pegylated-G-CSF-mobilized CD34(+) cells. Additionally, sorted pegylated-G-CSF-mobilized hematopoietic stem cells displayed higher expression of HOXA9 in comparison to G-CSF-mobilized hematopoietic stem cells. In line with the gene expression data, CD34(+) cells mobilized by pegylated G-CSF, as well as sorted hematopoietic stem cells, showed a significantly greater cell cycle activity. CONCLUSIONS: Stimulation with pegylated-G-CSF or G-CSF results in different expression of key regulatory genes and different functional properties of mobilized hematopoietic stem cells as well as their progeny, a finding that might be relevant for the application of these cells in blood stem cell transplantation. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Comparison of soil bacterial communities under diverse agricultural land management and crop production practices. Feb 2008 Tiehang Wu,Dan O Chellemi,Jim H Graham,Kendall J Martin,Erin N Rosskopf The composition and structure of bacterial communities were examined in soil subjected to a range of diverse agricultural land management and crop production practices. Length heterogeneity polymerase chain reaction (LH-PCR) of bacterial DNA extracted from soil was used to generate amplicon profile... ( view more )s that were analyzed with univariate and multivariate statistical methods. Five land management programs were initiated in July 2000: conventional, organic, continuous removal of vegetation (disk fallow), undisturbed (weed fallow), and bahiagrass pasture (Paspalum notatum var Argentine). Similar levels in the diversity of bacterial 16S rDNA amplicons were detected in soil samples collected from organically and conventionally managed plots 3 and 4 years after initiation of land management programs, whereas significantly lower levels of diversity were observed in samples collected from bahiagrass pasture. Differences in diversity were attributed to effects on how the relative abundance of individual amplicons were distributed (evenness) and not on the total numbers of bacterial 16S rDNA amplicons detected (richness). Similar levels of diversity were detected among all land management programs in soil samples collected after successive years of tomato (Lycopersicon esculentum) cultivation. A different trend was observed after a multivariate examination of the similarities in genetic composition among soil bacterial communities. After 3 years of land management, similarities in genetic composition of soil bacterial communities were observed in plots where disturbance was minimized (bahiagrass and weed fallow). The genetic compositions in plots managed organically were similar to each other and distinct from bacterial communities in other land management programs. After successive years of tomato cultivation and damage from two major hurricanes, only the composition of soil bacterial communities within organically managed plots continued to maintain a high degree of similarity to each other and remain distinct from other bacterial communities. This study reveals the effects of agricultural land management practices on soil bacterial community composition and diversity in a large-scale, long-term replicated study where the effect of soil type on community attributes was removed. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Direct stimulation of receptor-controlled phospholipase D1 by phospho-cofilin. Oct 3, 2007 Li Han,Matthias B Stope,Maider López de Jesús,Paschal A Oude Weernink,Martina Urban,Thomas Wieland,Dieter Rosskopf,Kensaku Mizuno,Karl H Jakobs,Martina Schmidt The activity state of cofilin, which controls actin dynamics, is driven by a phosphorylation-dephosphorylation cycle. Phosphorylation of cofilin by LIM-kinases results in its inactivation, a process supported by 14-3-3zeta and reversed by dephosphorylation by slingshot phosphatases. Here we report ... ( view more )on a novel cellular function for the phosphorylation-dephosphorylation cycle of cofilin. We demonstrate that muscarinic receptor-mediated stimulation of phospholipase D1 (PLD1) is controlled by LIM-kinase, slingshot phosphatase as well as 14-3-3zeta, and requires phosphorylatable cofilin. Cofilin directly and specifically interacts with PLD1 and upon phosphorylation by LIM-kinase1, stimulates PLD1 activity, an effect mimicked by phosphorylation-mimic cofilin mutants. The interaction of cofilin with PLD1 is under receptor control and encompasses a PLD1-specific fragment (aa 585-712). Expression of this fragment suppresses receptor-induced cofilin-PLD1 interaction as well as PLD stimulation and actin stress fiber formation. These data indicate that till now designated inactive phospho-cofilin exhibits an active cellular function, and suggest that phospho-cofilin by its stimulatory effect on PLD1 may control a large variety of cellular functions. ( view less ) View Full Abstract View Article Details   Related Articles G protein beta3 polymorphism and triptan response in cluster headache. Oct 2007 M Schürks,T Kurth,P Stude,C Rimmbach,J de Jesus,M Jonjic,H-C Diener,D Rosskopf Only about 70% of migraine and cluster headache (CH) patients report significant treatment responses to triptans, which are agonists at 5-HT(1B/D) receptors belonging to the family of G protein-coupled receptors. We analyzed whether a common polymorphism in the gene for the G protein beta3 subunit ... ( view more )(GNB3 C825T) modulates responder rates to triptans among a cohort of 231 unrelated Caucasian CH patients. A total of 180 CH patients used triptans, of whom 71.1% reported treatment success. The adjusted odds ratio for treatment response to triptans for heterozygous carriers of the GNB3 825T allele was 2.96 (95% confidence interval 1.34-6.56; P=0.0074) vs carriers of the 825CC genotype. The GNB3 genotype status did not affect responses to other acute and preventive therapeutic regimes including oxygen, verapamil, and corticosteroids, i.e., drugs not directly affecting G proteins. We conclude that pain relief by triptans is significantly modulated by a common genetic GNB3 variant. ( view less ) View Full Abstract View Article Details   Related Articles FGFR3 mutations and a normal CK20 staining pattern define low-grade noninvasive urothelial bladder tumours. Sep 2007 Johanna M M van Oers,Peter J Wild,Maximilian Burger,Stefan Denzinger,Robert Stoehr,Elke Rosskopf,Ferdinand Hofstaedter,Ewout W Steyerberg,Monika Klinkhammer-Schalke,Ellen C Zwarthoff,Theodorus H van der Kwast,Arndt Hartmann OBJECTIVES: Molecular markers superior to conventional clinicopathologic parameters are needed to predict disease courses in bladder cancer patients. In this study, we investigated four markers (Ki-67, TP53, CK20, FGFR3) in primary urothelial bladder tumours and compared them with traditional patho... ( view more )logic features. METHODS: Tissue microarrays were used to analyse CK20, TP53, and Ki-67 expression immunohistochemically in 255 unselected patients. FGFR3 mutations were detected by SNaPshot analysis. RESULTS: Abnormal CK20 expression was strongly associated with higher tumour grades and stages (p < 0.001); however, 65% of pTa tumours revealed an abnormal CK20 pattern. In the group of pTaG1 tumours, 59% presented with an abnormal CK20 pattern, whereas 82% carried the FGFR3 mutation. In the group of bladder tumours with normal CK20 pattern, the FGFR3 gene was mutated in 89%, whereas a mutated FGFR3 gene was found in only 37% of cases with abnormal CK20 expression (p < 0.001). All markers proved to be strong predictors of disease-specific survival in univariate studies. However, in multivariate analyses they were not independent from classical pathologic parameters. None of the molecular markers was significantly associated with tumour recurrence. CONCLUSIONS: Dysregulation of CK20 expression is an early event in the carcinogenesis of papillary noninvasive bladder cancer, but occurs later than FGFR3 mutations. The group of low-grade noninvasive papillary tumours is defined by the presence of an FGFR3 mutation and a normal CK20 expression pattern. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Association between migraine and the G1246A polymorphism in the hypocretin receptor 2 gene. Sep 2007 Markus Schürks,Volker Limmroth,Ingrid Geissler,Grietje Tessmann,Irini Savidou,Jörg Engelbergs,Tobias Kurth,Hans-Christoph Diener,Dieter Rosskopf BACKGROUND: The hypocretin receptor 2 (HCRTR2) G1246A polymorphism has been associated with the risk for cluster headache. Since the hypothalamic hypocretin/orexin system projects throughout the nervous system and affects multiple vegetative functions including generation of rhythmicity, vasomotion... ( view more ), autonomic symptoms as well as modulation of nociception, it may also be linked with migraine. OBJECTIVE: We thus sought to evaluate whether the HCRTR2 G1246A polymorphism is associated with the risk for migraine. METHODS: We prospectively established a cohort of 146 unrelated patients with migraine. The control group consisted of 279 healthy volunteers. We genotyped patients and controls for the HCRTR2 G1246A polymorphism and examined an association with presence or absence of migraine. RESULTS: Genotype and allele frequencies were not significantly different between migraine patients and controls (genotype distribution: chi(2)= 4.13, 2 df, P= .13; allele distribution: chi(2)= 0.9, 1 df, P= .34). CONCLUSION: Our study does not support a major contribution of the HCRTR2 G1246A polymorphism to the pathogenesis of migraine in contrast to its effects in cluster headache. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Investigation of the Lith6 candidate genes APOBEC1 and PPARG in human gallstone disease. Sep 2007 Clemens Schafmayer,Henry Völzke,Stephan Buch,Jan Egberts,Annika Spille,Huberta von Eberstein,Andre Franke,Markus Seeger,Sebastian Hinz,Abdou Elsharawy,Dieter Rosskopf,Mario Brosch,Michael Krawczak,Ulrich R Foelsch,Anton Schafmayer,Frank Lammert,Stefan Schreiber,Fred Faendrich,Jochen Hampe,Juergen Tepel BACKGROUND: Genetic susceptibility contributes to the aetiology of gallbladder diseases as shown by multiple epidemiological studies. A major gallstone susceptibility locus (Lith6) was identified in 2003 by quantitative trait locus mapping in mice. Two attractive positional and functional candidate... ( view more ) genes in apolipoprotein B mRNA-editing protein (APOBEC1) and peroxisome proliferator-activated receptor gamma (PPARG) are located in this interval. AIMS: To investigate APOBEC1 and PPARG as candidate genes for common symptomatic gallstone disease in humans. PATIENTS AND METHODS: Eight hundred and ten patients who underwent cholecystectomy for symptomatic gallstone disease (median age of onset 50) were compared with 718 sex-matched control individuals. An independent additional sample included 368 gallstone patients and 368 controls. Control individuals were sonographically free of gallstones. Haplotype tagging and all known coding single nucleotide polymorphisms were genotyped for PPARG (N=32) and APOBEC1 (N=11). RESULTS: The investigated high-risk patient sample provides a power of greater than 80% for the detection of odds ratios down to 1.45. No evidence of association of the two genes in the single-point tagging markers, coding variants and in the sliding window haplotype analysis was detected (all nominal single point P-values >0.04). A logistic regression analysis including age, sex and BMI as covariates was also negative (nominal P-values > or =0.08). CONCLUSIONS: In the investigated German samples, no evidence of association of APOBEC1 and PPARG with gallstone susceptibility was detected. Systematic fine mapping of the complete Lith6 region is required to identify the causative genetic variants for gallstone in mice and humans. ( view less ) View Full Abstract View Article Details   Related Articles A genome-wide association scan identifies the hepatic cholesterol transporter ABCG8 as a susceptibility factor for human gallstone disease. Aug 2007 Stephan Buch,Clemens Schafmayer,Henry Völzke,Christian Becker,Andre Franke,Huberta von Eller-Eberstein,Christian Kluck,Ingelore Bässmann,Mario Brosch,Frank Lammert,Juan Francisco Miquel,Flavio Nervi,Michael Wittig,Dieter Rosskopf,Birgit Timm,Christine Höll,Marcus Seeger,Abdou ElSharawy,Tim Lu,Jan Egberts,Fred Fändrich,Ulrich R Fölsch,Michael Krawczak,Stefan Schreiber,Peter Nürnberg,Jürgen Tepel,Jochen Hampe With an overall prevalence of 10-20%, gallstone disease (cholelithiasis) represents one of the most frequent and economically relevant health problems of industrialized countries. We performed an association scan of >500,000 SNPs in 280 individuals with gallstones and 360 controls. A follow-up stud... ( view more )y of the 235 most significant SNPs in 1,105 affected individuals and 873 controls replicated the disease association of SNP A-1791411 in ABCG8 (allelic P value P(CCA) = 4.1 x 10(-9)), which was subsequently attributed to coding variant rs11887534 (D19H). Additional replication was achieved in 728 German (P = 2.8 x 10(-7)) and 167 Chilean subjects (P = 0.02). The overall odds ratio for D19H carriership was 2.2 (95% confidence interval: 1.8-2.6, P = 1.4 x 10(-14)) in the full German sample. Association was stronger in subjects with cholesterol gallstones (odds ratio = 3.3), suggesting that His19 might be associated with a more efficient transport of cholesterol into the bile. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles The G1246A polymorphism in the hypocretin receptor 2 gene is not associated with treatment response in cluster headache. Apr 2007 M Schürks,T Kurth,I Geissler,G Tessmann,H-C Diener,D Rosskopf The risk of cluster headache (CH) is associated with the G-allele of the G1246A polymorphism in the hypocretin receptor 2 (HCRTR2) gene. First-line medication is effective in only about 70-80% of CH patients. We hypothesized that the HCRTR2 G1246A polymorphism is also of pharmacogenetic relevance i... ( view more )n CH and may affect treatment response. We performed a prospective cohort study among 184 unrelated White CH patients. While the HCRTR2 1246G allele was significantly associated with CH in this group, treatment outcomes with triptans, oxygen, verapamil and corticosteroids remained unaffected. Our results do not support a role of the HCRTR2 G1246A polymorphism in drug responses in CH. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Molecular signature of CD34(+) hematopoietic stem and progenitor cells of patients with CML in chronic phase. Mar 2007 E Diaz-Blanco,I Bruns,F Neumann,J C Fischer,T Graef,M Rosskopf,B Brors,S Pechtel,S Bork,A Koch,A Baer,U-P Rohr,G Kobbe,A von Haeseler,N Gattermann,R Haas,R Kronenwett In this study, we provide a molecular signature of highly enriched CD34+ cells from bone marrow of untreated patients with chronic myelogenous leukemia (CML) in chronic phase in comparison with normal CD34+ cells using microarrays covering 8746 genes. Expression data reflected several BCR-ABL-induc... ( view more )ed effects in primary CML progenitors, such as transcriptional activation of the classical mitogen-activated protein kinase pathway and the phosphoinositide-3 kinase/AKT pathway as well as downregulation of the proapoptotic gene IRF8. Moreover, novel transcriptional changes in comparison with normal CD34+ cells were identified. These include upregulation of genes involved in the transforming growth factorbeta pathway, fetal hemoglobin genes, leptin receptor, sorcin, tissue inhibitor of metalloproteinase 1, the neuroepithelial cell transforming gene 1 and downregulation of selenoprotein P. Additionally, genes associated with early hematopoietic stem cells (HSC) and leukemogenesis such as HoxA9 and MEIS1 were transcriptionally activated. Differential expression of differentiation-associated genes suggested an altered composition of the CD34+ cell population in CML. This was confirmed by subset analyses of chronic phase CML CD34+ cells showing an increase of the proportion of megakaryocyte-erythroid progenitors, whereas the proportion of HSC and granulocyte-macrophage progenitors was decreased in CML. In conclusion, our results give novel insights into the biology of CML and could provide the basis for identification of new therapeutic targets. ( view less ) View Full Abstract View Article Details   Related Articles Genetics of arterial hypertension and hypotension. Feb 2007 Dieter Rosskopf,Markus Schürks,Christian Rimmbach,Rafael Schäfers Human hypertension affects affects more than 20% of the adult population in industrialized countries, and it is implicated in millions of deaths worldwide each year from stroke, heart failure and ischemic heart disease. Available evidence suggests a major genetic impact on blood pressure regulation... ( view more ). Studies in monogenic hypertension revealed that renal salt and volume regulation systems are predominantly involved in the genesis of these disorders. Mutations here affect the synthesis of mineralocorticoids, the function of the mineralocorticoid receptor, epithelial sodium channels and their regulation by a new class of kinases, termed WNK kinases. It has been learned from monogenic hypotension that almost all ion transporters involved in the renal uptake of Na(+) have a major impact on blood pressure regulation. For essential hypertension as a complex disease, many candidate genes have been analysed. These include components of the renin-angiotensin-aldosterone system, adducin, beta-adrenoceptors, G protein subunits, regulators of G protein signalling (RGS) proteins, Rho kinases and G protein receptor kinases. At present, the individual impact of common polymorphisms in these genes on the observed blood pressure variation, on risk for stroke and as predictors of antihypertensive responses remains small and clinically irrelevant. Nevertheless, these studies have greatly augmented our knowledge on the regulation of renal functions, cellular signal transduction and the integration of both. Together, this provides the basis for the identification of novel drug targets and, hopefully, innovative antihypertensive drugs. ( view less ) View Full Abstract View Article Details   Related Articles Comment on "A common genetic variant is associated with adult and childhood obesity". Jan 12, 2007 Dieter Rosskopf,Alexa Bornhorst,Christian Rimmbach,Christian Schwahn,Alexander Kayser,Anne Krüger,Grietje Tessmann,Ingrid Geissler,Heyo K Kroemer,Henry Völzke Contrary to the findings of Herbert et al. (Reports, 14 April 2006, p. 279), homozygous carriers of the C allele of the rs7566605 variant near the INSIG2 gene did not exhibit a significantly increased risk for obesity in a large population-based cross-sectional German study. A subgroup analysis, ho... ( view more )wever, revealed that this allele significantly increased the risk for obesity in already overweight individuals. ( view less ) View Full Abstract View Article Details   Related Articles Alcohol consumption is associated with an interaction between DRD2 exon 8 A/A genotype and self-directedness in males. 2007 Michael Lucht,Sven Barnow,Winnie Schroeder,Hans Joergen Grabe,Dieter Rosskopf,Christian Brummer,Ulrich John,Harald J Freyberger,Falko H Herrmann BACKGROUND: Both reduced postsynaptic dopamine D(2) receptor function and the character variable self-directedness (SDD) are related to the level of alcohol consumption. We examined for interactions between DRD2 exon 8(rs6276), a polymorphism which has been associated with various alcohol-related p... ( view more )henotypes, SDD and alcohol consumption. METHODS: A total of 144 male and 186 female probands with alcohol dependence or abuse diagnoses and without were included in the study. All subjects were assessed with the alcohol section of the Semi-Structured Assessment for the Genetics of Alcoholism and the Temperament and Character Inventory. RESULTS: Male probands with A/A genotype reported significantly higher alcohol consumption in a typical week (ANOVA; p = 0.024); those with A/A genotype and low SDD showed particularly high consumption levels (interaction DRD2 x SDD: p = 0.019). Alcohol dependence/abuse (DSM-IV) but not nicotine dependence was also relevant for higher alcohol consumption (trend: p = 0.052). In the female group, only alcohol disorders predicted alcohol consumption. CONCLUSIONS: Our findings support a role for a gene-personality interaction of DRD2 exon 8 x SDD in alcohol consumption in males. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Disposition and sterol-lowering effect of ezetimibe are influenced by single-dose coadministration of rifampin, an inhibitor of multidrug transport proteins. Nov 2006 Stefan Oswald,Thomas Giessmann,Dieter Luetjohann,Danilo Wegner,Dieter Rosskopf,Werner Weitschies,Werner Siegmund BACKGROUND AND AIMS: The disposition and sterol-lowering effect of ezetimibe are associated with long-lasting enterosystemic circulation, which is initiated by secretion of ezetimibe and its glucuronide via intestinal P-glycoprotein (P-gp) (ABCB1) and the multidrug resistance-associated protein 2 (... ( view more )MRP2) (ABCC2) into gut lumen. Hepatic uptake and secretion may contribute to recycling. To obtain deeper insight into the intestinal and hepatic processes, the disposition of ezetimibe was studied in the presence of rifampin (INN, rifampicin), a modulator of P-gp, MRP2, and hepatic organic anion (uptake) transporting polypeptides (OATPs) (SLCOs). METHODS: The disposition of ezetimibe (20 mg orally) alone and after coadministration of rifampin (600 mg orally) was measured in a crossover study of 8 healthy subjects with the SLCO1B1 *1a/*1a genotype. Concentrations of ezetimibe and its glucuronide in serum, urine, and feces, as well as cholesterol, lathosterol, and the plant sterols campesterol and sitosterol in serum, were quantified by use of liquid chromatography and gas chromatography with mass spectrometric detection. RESULTS: After rifampin administration, the maximum serum concentrations of ezetimibe and its glucuronide were significantly elevated (12.0+/-4.20 ng/mL versus 4.67+/-2.72 ng/mL, P=.017, and 282+/-73.8 ng/mL versus 107+/-35.3 ng/mL, P=.012, respectively). The area under the curve of ezetimibe was not affected (102+/-37.6 ng.h/mL versus 140+/-86.3 ng.h/mL, P=not significant), whereas that of the glucuronide was markedly increased (2150+/-687 ng.h/mL versus 1030+/-373 ng.h/mL, P=.012). Renal clearance remained unchanged. Fecal excretion of ezetimibe was markedly decreased (7.6+/-2.2 mg versus 10.4+/-1.8 mg, P=.036), whereas renal excretion of the glucuronide was strongly elevated (4.8+/-1.9 mg versus 2.0+/-1.2 mg, P=.049) after coadministration. The onset of a significant sterol-lowering effect of ezetimibe was significantly shortened by rifampin coadministration. CONCLUSIONS: Coadministration of rifampin increases the maximum serum concentrations of ezetimibe but reduces its enterosystemic recycling, most likely by inhibition of the secretion of ezetimibe and its glucuronide via P-gp and MRP2. ( view less ) View Full Abstract View Article Details   Related Articles Cluster headache: clinical presentation, lifestyle features, and medical treatment. Sep 2006 Markus Schürks,Tobias Kurth,Janete de Jesus,Mira Jonjic,Dieter Rosskopf,Hans-Christoph Diener BACKGROUND: Cluster headache (CH) is a rare but severe headache form with a distinct clinical presentation. Misdiagnoses and mismanagement among these patients are high. OBJECTIVE: To characterize clinical features and medical treatment in patients with CH. METHODS: We established a cohort of 246 c... ( view more )linic-based and non-clinic-based CH patients. The diagnosis of CH was verified according to International Headache Society (IHS) criteria. We used standardized questionnaires to assess associated factors as well as success or failure of treatments. RESULTS: The majority (75.6%) was not treated before at our clinic-77.6% were males; 74.8% had episodic CH, 16.7% had chronic CH, in the remaining patients, the periodicity was undetermined because they were newly diagnosed. Cranial autonomic features were present in 98.8%, nausea and vomiting in 27.8%, and photophobia or phonophobia in 61.2% of CH patients. Most (67.9%) reported restlessness during attacks and 23% a typical migrainous aura preceding the attacks. The rate of current smoking was high (65.9%). Half of the patients reported that alcohol (red wine in 70%) triggered CH attacks. Eighty-seven percent reported the use of drugs of first choice (triptans 77.6%, oxygen 71.1%) with sumatriptan subcutaneous injection being the most effective drug for acute therapy (81.2%). The most frequently used preventive medications were verapamil (70.3%) and glucocorticoids (57.7%) with equally high effectiveness. CONCLUSIONS: Apart from the IHS criteria additional features like nausea/vomiting and migrainous aura may guide the diagnosis of CH. A large number of CH patients do not receive adequate treatments. ( view less ) View Full Abstract View Article Details   Related Articles Cyclic AMP-dependent and Epac-mediated activation of R-Ras by G protein-coupled receptors leads to phospholipase D stimulation. Aug 4, 2006 Maider López De Jesús,Matthias B Stope,Paschal A Oude Weernink,Yvonne Mahlke,Christof Börgermann,Viktoria N Ananaba,Christian Rimmbach,Dieter Rosskopf,Martin C Michel,Karl H Jakobs,Martina Schmidt The activation of the Ras-related GTPase R-Ras, which has been implicated in the regulation of various cellular functions, by G protein-coupled receptors (GPCRs) was studied in HEK-293 cells stably expressing the M3 muscarinic acetylcholine receptor (mAChR), which can couple to several types of het... ( view more )erotrimeric G proteins. Activation of the receptor induced a very rapid and transient activation of R-Ras. Studies with inhibitors and activators of various signaling pathways indicated that R-Ras activation by the M3 mAChR is dependent on cyclic AMP formation but is independent of protein kinase A. Similar to the rather promiscuous M3 mAChR, two typical G(s)-coupled receptors also induced R-Ras activation. The receptor actions were mimicked by an Epac-specific cyclic AMP analog and suppressed by depletion of endogenous Epac1 by small interfering RNAs, as well as expression of a cyclic AMP binding-deficient Epac1 mutant, but not by expression of dominant negative Rap GTPases. In vitro studies demonstrated that Epac1 directly interacts with R-Ras and catalyzes GDP/GTP exchange at this GTPase. Finally, it is shown that the cyclic AMP- and Epac-activated R-Ras plays a major role in the M3 mAChR-mediated stimulation of phospholipase D but not phospholipase C. Collectively, our data indicate that GPCRs rapidly activate R-Ras, that R-Ras activation by the GPCRs is apparently directly induced by cyclic AMP-regulated Epac proteins, and that activated R-Ras specifically controls GPCR-mediated phospholipase D stimulation. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Cluster headache is associated with the G1246A polymorphism in the hypocretin receptor 2 gene. Jun 27, 2006 M Schürks,T Kurth,I Geissler,G Tessmann,H-C Diener,D Rosskopf The G1246A polymorphism in the gene of the hypocretin receptor 2 (HCRTR2) has been linked to the risk for cluster headache (CH). The authors examined this association in a large sample of 226 patients with CH and 266 controls from Germany. The genotype and allele distribution varied significantly b... ( view more )etween patients and controls. Homozygous carriers of the G-allele had a twofold increase in risk for CH (OR 1.97; 95% CI 1.32 to 2.92; p = 0.0007). ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Uptake of cardiovascular drugs into the human heart: expression, regulation, and function of the carnitine transporter OCTN2 (SLC22A5). Feb 28, 2006 Markus Grube,Henriette E U Meyer zu Schwabedissen,Damaris Präger,Jeanette Haney,Klaus-Uwe Möritz,Konrad Meissner,Dieter Rosskopf,Lothar Eckel,Michael Böhm,Gabriele Jedlitschky,Heyo K Kroemer BACKGROUND: To date, the uptake of drugs into the human heart by transport proteins is poorly understood. A candidate protein is the organic cation transporter novel type 2 (OCTN2) (SLC22A5), physiologically acting as a sodium-dependent transport protein for carnitine. We investigated expression an... ( view more )d localization of OCTN2 in the human heart, uptake of drugs by OCTN2, and functional coupling of OCTN2 with the eliminating ATP-binding cassette (ABC) transporter ABCB1 (P-glycoprotein). METHODS AND RESULTS: Messenger RNA levels of OCTN2 and ABCB1 were analyzed in heart samples by quantitative polymerase chain reaction. OCTN2 was expressed in all auricular samples that showed a pronounced interindividual variability (35 to 1352 copies per 20 ng of RNA). Although a single-nucleotide polymorphism in OCTN2 (G/C at position -207 of the promoter) had no influence on expression, administration of beta-blockers resulted in significantly increased expression. Localization of OCTN2 by in situ hybridization, laser microdissection, and immunofluorescence microscopy revealed expression of OCTN2 mainly in endothelial cells. For functional studies, OCTN2 was expressed in Madin-Darby canine kidney (MDCKII) cells. Using this system, verapamil, spironolactone, and mildronate were characterized both as inhibitors (EC50=25, 26, and 21 micromol/L, respectively) and as substrates. Like OCTN2, ABCB1 was expressed preferentially in endothelial cells. A significant correlation of OCTN2 and ABCB1 expression in the human heart was observed, which suggests functional coupling. Therefore, the interaction of OCTN2 with ABCB1 was tested with double transfectants. This approach resulted in a significantly higher transcellular transport of verapamil, a substrate for both OCTN2 and ABCB1. CONCLUSIONS: OCTN2 is expressed in the human heart and can be modulated by drug administration. Moreover, OCTN2 can contribute to the cardiac uptake of cardiovascular drugs. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Efficacy demonstration of tetanus vaccines by double antigen ELISA. Sep 2005 U Rosskopf,K Noeske,E Werner This paper describes a double antigen ELISA (DAE) for rapid, specific and reliable assessment of the antitetanus immune status of horses and sheep. Compared with the indirect ELISA, the double antigen ELISA has the advantage of species-independent testing of sera. Thanks to its test design, it is m... ( view more )ore specific since the detected antibodies are forced to bind tetanus toxoid twice. In addition, it is very sensitive to tetanus antibodies, enabling the detection of low antibody titres, in range which is relevant for the assessment of the protective status (tetanus toxin neutralising antibodies). The detection limit of the DAE for tetanus antibodies is in the order of 10(-4) EU/ml. A comparison of in vitro results of individual sera with in vivo titres showed that horse sera with titres of 0.04 and 0.05 EU/ml in the DAE showed titres of > 0.05 IU and 0.034 IU/ml respectively during in vivo testing thus indicating good agreement. For tested sheep sera which were rated > 0.05 IU/ml in vivo, the corresponding titre in the DAE was 0.24 EU/ml. Clear tetanus antitoxin establishment of protective ELISA limits requires further comparative examination of sera with low titres (< 1.0 EU/ml) in the double antigen ELISA and the toxin neutralisation test. With the double antigen ELISA, efficacy can be determined for marketing authorisation procedures of tetanus vaccines ad us. vet. As a consequence, the toxin neutralisation test (still being the standard method of choice for quantifying tetanus toxin neutralising antitoxin titres) could be replaced, since it requires too great a number of animals per test and involves considerable suffering for the animals. The test described here reduces the use of mice and guinea pigs within vaccine efficacy testing. In addition, it involves less exposure of the laboratory personnel to toxin. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Association study of the G-protein beta3 subunit C825T polymorphism with disease progression in patients with bladder cancer. Sep 2005 Andreas Eisenhardt,Winfried Siffert,Dieter Rosskopf,Michael Musch,Max Mosters,Ulla Roggenbuck,Karl-Heinz Jöckel,Herbert Rübben,Gerd Lümmen The T-allele in the GNB3 C825T polymorphism has been associated with increased cell migration, a prerequisite for metastasis. In this study we investigated a potential association of the C825T-allele status and disease progression in patients with transitional cell carcinoma of the bladder (TCC). G... ( view more )enotyping of the GNB3 C825T polymorphism was performed in 389 patients with transitional cell carcinoma of the bladder and in 104 control subjects and clinical follow-up was worked up in 339 patients. Genotype distribution in 389 patients with bladder cancer was comparable to genotype distribution of the control group. There was no association of GNB3 C825T genotype with tumor stage or grade, but follow-up analysis in the subgroup of non-smokers revealed a shorter time to metastasis in 825T-allele carriers compared to individuals homozygous CC. The genotype of the GNB3 C825T polymorphism appears to influence the biological behavior of tumor disease in non-smoking TCC patients. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Should carbohydrate concentration of a sports drink be less than 8% during exercise in the heat? Apr 2005 Mindy L Millard-Stafford,Phillip B Sparling,Linda B Rosskopf,Teresa K Snow Our purpose was to determine if sports drinks with 6 and 8% CHO differentially affect physiological responses or run performance in the heat. Ten men ran 32 km while ingesting: placebo (P), 6% carbohydrate-electrolyte (CE6), and 8% carbohydrate-electrolyte (CE8). At 15 km, a 250 mL drink labeled wi... ( view more )th deuterium oxide (D2O) was ingested. Blood glucose and respiratory exchange ratio were significantly higher (P < 0.05) for CE6 and CE8 compared to P. Rectal temperature (T(re)) at 32 km was higher for CE8 (40.1 +/- 0.2 degrees C) compared to P (39.5 +/- 0.2 degrees C) but similar to CE6 (39.8 +/- 0.2 degrees C). D2O accumulation was not different among drink trials. Run performance was 8% faster for CE8 (1062 +/- 31 s) compared to P (1154 +/- 56 s) and similar to CE6 (1078 +/- 33 s). Confirming the ACSM Position Stand, 8% CE are acceptable during exercise in the heat and attenuate the decline in performance. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Replacement of the in vivo neutralisation test for efficacy demonstration of tetanus vaccines ad us. vet. 2005 Ute Rosskopf,Kerstin Noeske,Esther Werner The bacterium Clostridium (C.) tetani is an ubiquitous pathogen. This anaerobic, gram-positive bacterium can form spores and can be found in the whole environment. It enters the body via injuries of the skin and wounds where it releases the neurotoxin "tetanospasmin" (= tetanus toxin). The animals ... ( view more )most susceptible to tetanus infection are horses and sheep. Only active immunisation by tetanus vaccine provides effective protection against tetanus intoxication. The marketing authorisation requirements stipulate that efficacy of tetanus vaccines ad us. vet. must be demonstrated in all target animal species via determination of neutralising tetanus serum antitoxin concentrations. The standard method used for this purpose is still the toxin neutralisation test (TNT), as it quantifies the tetanus toxin-neutralising effect of tetanus serum antibodies in vivo. In this test, tetanus toxin is added to dilutions of serum from vaccinated horse and sheep. The serum dilutions are then administered to mice or guinea pigs, which are observed for toxic symptoms. Against the background of animal protection, the goal of one project of the Paul-Ehrlich-Institut (Bundesministerium fuer Bildung und Forschung (Federal Ministry for Education and Research), 0312636) was to establish an alternative to the toxin neutralisation test, enabling the testing of efficacy of tetanus vaccines with serological in vitro methods. For this purpose, a so-called double antigen ELISA (DAE) was established which enables the testing of sera of different species in one assay. In addition, the sera were tested in an indirect ELISA for horses and sheep separately. Altogether, ten groups of horses and eight groups of sheep were immunised with ten animals per group each. The tetanus vaccines comprised almost all products authorised for the German market at the start of the project. 564 horse sera and 257 sheep sera were tested using the two ELISA methods. Some sera were also tested in vivo. The kinetics of antibody responses were recorded. The in vitro DAE method seems to be suitable to replace the mouse neutralisation test used for the detection of tetanus antitoxin in sera of target animal species. The comparison of some sera in the ELISA and the TNT showed good equivalence of results. Nevertheless, before an ELISA titre in horse and sheep sera indicating unambiguous protection against tetanus can be fixed, further comparative assays of low titre sera in the TNT and the DAE will have to be performed. ( view less ) View Full Abstract View Article Details View Coded Data Related Articles Page 1 of 4 1 2 3 4 > (96 articles found)

      
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