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Bartnik, M., Ryden, L., Ferrari, R., Malmberg, K., Pyorala, K., Simoons, M., Standl, E., Soler-Soler, J., Ohrvik, J., and Euro, HeartSurveyInvestigators AIM: The objective behind the Euro Heart Survey on diabetes and the heart was to study the prevalence of abnormal glucose regulation in adult patients with coronary artery disease (CAD). METHODS AND RESULTS: The survey engaged 110 centres in 25 countries recruiting 4196 patients referred to a cardi... ( view more )ologist due to CAD out of whom 2107 were admitted on an acute basis and 2854 had an elective consultation. Patient data were collected via a web-based case record form. An oral glucose tolerance test (OGTT) was used for the characterisation of the glucose metabolism. Thirty-one per cent of the patients had diabetes. An OGTT was performed on the 1920 patients without known diabetes, of whom 923 had acute and 997 had a stable manifestation of CAD, respectively. In patients with acute CAD, 36% had impaired glucose regulation and 22% newly detected diabetes. In the stable group these proportions were 37% and 14%. CONCLUSION: This survey demonstrates that normal glucose regulation is less common than abnormal glucose regulation in patients with CAD. OGTT easily discloses the glucometabolic state and should be a routine procedure. The knowledge of glucometabolic state among these patients should influence their future management because it has great potential to improve the outcome ( view less ) Liu, J. P., Zhang, M., Wang, W. Y., and Grimsgaard, S. BACKGROUND: Traditional Chinese herbal medicines have been used for a long time to treat diabetes, and many controlled trials have been done to investigate their efficacy. OBJECTIVES: To assess the effects of Chinese herbal medicines in patients with type 2 diabetes mellitus. SEARCH STRATEGY: We se... ( view more )arched the following electronic databases: The Cochrane Library (CENTRAL), the Chinese BioMedical Database, MEDLINE, EMBASE, and LILACS, combined with hand searches on Chinese journals and conference proceedings. Date of last search was April 2004. No language restriction was used. SELECTION CRITERIA: Randomised trials of herbal medicines (with at least two months treatment duration) compared with placebo, pharmacological or non-pharmacological interventions were included. DATA COLLECTION AND ANALYSIS: Data were extracted independently by two reviewers. The methodological quality of trials was evaluated using the parameters of randomisation, allocation concealment, double blinding, and drop-out rates. Meta-analyses were performed where data were available. MAIN RESULTS: Sixty-six randomised trials, involving 8302 participants, met the inclusion criteria. Methodological quality was generally low. Sixty-nine different herbal medicines were tested in the included trials, which compared herbal medicines with placebo, hypoglycaemic drugs, or herbal medicines plus hypoglycaemic drugs. Compared with placebo, Holy basil leaves, Xianzhen Pian, Qidan Tongmai, traditional Chinese formulae (TCT), Huoxue Jiangtang Pingzhi, and Inolter showed significantly hypoglycaemic response. Compared with hypoglycaemic drugs including glibenclamide, tolbutamide, or gliclazide, seven herbal medicines demonstrated a significant better metabolic control, including Bushen Jiangtang Tang, Composite Trichosanthis, Jiangtang Kang, Ketang Ling, Shenqi Jiangtang Yin, Xiaoke Tang, and Yishen Huoxue Tiaogan. In 29 trials that evaluated herbal medicines combined with hypoglycaemic drugs, 15 different herbal preparations showed additional better effects than hypoglycaemic drugs monotherapy. Two herbal therapies combined with diet and behaviour change showed better hypoglycaemic effects than diet and behaviour change alone. No serious adverse effects from the herbal medicines were reported. AUTHORS' CONCLUSIONS: Some herbal medicines show hypoglycaemic effects in type 2 diabetes. However, these findings should be carefully interpreted due to the low methodological quality, small sample size, and limited number of trials. In the light of some positive findings, some herbal medicines deserve further examination in high-quality trials. PLAIN LANGUAGE SUMMARY: We are still waiting for firm evidence on Chinese herbal medicines for treatment of non-insulin-dependent diabetesAlthough the use of herbal medicines for treatment of diabetes has a long history especially in the East, current evidence cannot warrant to support the routine use in clinical practice. This systematic review evaluates the effects of various herbal preparations (including single herbs or mixtures of different herbs) for treating people with type 2 diabetes. The review shows that some herbal medicines lower blood sugar and relieving symptoms in patients with diabetes. However, the methodological quality of the clinical trials evaluating these herbs is generally poor. The analyses also indicate that trials with positive findings are more likely to be associated with exaggerated effects. However, the trials did not report significant adverse effects. In conclusion, herbal medicines should not be recommended for routine use in diabetic patients of type 2 diabetes until we get scientifically sound trials. Testing the herbs in larger, well-designed trials is needed in order to establish the necessary evidence for their use ( view less ) Singh, S. K., Behre, A., and Singh, M. K. BACKGROUND: Relationship between microalbuminuria and diabetic retinopathy in patients with type 1 and type 2 diabetes mellitus has been described. Patients with lean type 2 diabetes mellitus has some difference of insulin secretion and action in comparison with obese type 2 diabetes mellitus and t... ( view more )here are evidences to support that lean type 2 diabetes mellitus is slow emerging type 1 diabetes mellitus in our population. The aim of this study is to find out correlation between retinopathy and microalbuminuria in lean type 2 diabetes mellitus. METHODS: Fifty two patients with lean type 2 diabetes mellitus (BMI < 18.5 Kg/M2) were selected. Diabetic retinopathy was observed in 25 patients only. Blood glucose sample was taken after 10 hours of overnight fasting. Glycosylated haemoglobin (HbA1c) was measured by calorimetric method and urinary albumin was estimated in morning urine saniple by Micral II test strip. RESULTS: Patients with diabetic retinopathy had longer duration of diabetes detected than those with normal fundus but the difference was statistically insignificant. Fasting blood glucose greater than 200 mg/dl was found in 63.6% of patients with diabetic retinopathy and in 36.4% of patients with normal fundus but the difference was insiginificant. Patients with diabetic retinopathy had microalbuminuria test positive and level was significantly higher in patients with proliferative retinopathy than in patients with background retinopathy. CONCLUSION: Microalbuminuria is associated with diabetic retinopathy in lean type 2 diabetes mellitus. Increase in urinary albumin excretion correlates with development of proliferative diabetic retinopathy in lean type 2 diabetes mellitus similar to type 1 and type 2 diabetes niellitus. This study emphasizes that microalbuminuria estimated by semi quantitative method is a cost effective and reliable marker of diabetic retinopathy in lean type 2 diabetes mellitus and high level of this may serve as an indicator of proliferative retinopathy in them ( view less ) El Asrar, A. M., Al Rubeaan, K. A., Al Amro, S. A., Kangave, D., and Moharram, O. A. PURPOSE: To describe the incidence of, and risk factors associated with, diabetic retinopathy in diabetic persons assessed at a Saudi diabetes centre. METHODS: Five hundred and two patients with diabetes mellitus assessed by our service were studied. There were 174 patients (34.7%) with insulin-dep... ( view more )endent diabetes mellitus (IDDM) and 328 patients (65.3%) with non-insulin-dependent diabetes mellitus (NIDDM). RESULTS: The incidence of retinopathy was 157/502 (31.3%). The incidence was 42.5% in patients with IDDM and 25.3% in those with NIDDM. By logistic regression analysis, it was shown that old age (>60 years), insulin use, long duration of diabetes (>10 years), poor diabetes control, and the presence of nephropathy were significantly associated with the incidence of retinopathy. On the basis of the magnitudes of the regression coefficients in the hazard function, long duration of diabetes was the most important independent risk factor for the development of retinopathy; the presence of nephropathy, age >60 years, poor diabetes control, and use of insulin were less important (regression coefficients: 1.9, 1.71, 1.331, 0.8508 and 0.6178, respectively). The incidence of macular oedema was significantly associated with the presence of hypertension and high cholesterol levels in patients with IDDM. Polycotomous regression analysis showed that the presence of nephropathy was the only factor significantly associated with the severity of retinopathy. CONCLUSIONS: The significant associations with poor control and duration of diabetes provide further strong evidence for the benefits of optimal glycaemic control. Other potentially modifiable risk factors for retinopathy may be important, including elevated blood pressure and serum cholesterol ( view less ) Nagi, D. K., Pettitt, D. J., Bennett, P. H., Klein, R., and Knowler, W. C. In a population-based epidemiological study, 991 Pima Indians with non-insulin-dependent (Type 2) diabetes mellitus (NIDDM) and 288 without diabetes aged > or =15 years were examined for retinopathy by fundus photography with a 45 degrees fundus camera after mydriasis. The photographs were graded u... ( view more )sing a modified Airlie-House classification scheme. The associations of several factors with retinopathy were studied by logistic regression. Non-proliferative retinopathy was present in 11.2 % (19/169) subjects at the time of diagnosis of diabetes and in 8.3% (4/48) in newly diagnosed subjects who had a documented non-diabetic oral glucose tolerance test within 4 years prior to diagnosis of diabetes. The prevalence of retinopathy in subjects with impaired glucose tolerance was 12% (8/68). Retinopathy at the time of diagnosis of diabetes was significantly associated with lower body mass index and higher systolic blood pressure but not glycaemia. Retinopathy was present in 375 (37.8 %) diabetic subjects and 14 (5.2 %) non-diabetic subjects. Among all subjects with diabetes (duration 0-37 years), stepwise multivariate analysis showed non-proliferative retinopathy to be associated with duration of diabetes, mean blood pressure, fasting plasma glucose, treatment with insulin and albuminuria. Proliferative retinopathy was seen in 34 (2.7%) of diabetic and none of the non-diabetic subjects, and was associated with 2 h post-load glucose concentrations, as well as albuminuria, insulin treatment, younger age, and diastolic blood pressure. These data confirm the need for fundus examination at the time of diagnosis of diabetes and during long-term follow-up. Albuminuria and blood pressure are potentially modifiable risk factors and the impact of treating these on incidence and progression of diabetic retinopathy need to be assessed ( view less ) Liu, D. P., Molyneaux, L., Chua, E., Wang, Y. Z., Wu, C. R., Jing, H., Hu, L. N., Liu, Y. J., Xu, Z. R., and Yue, D. K. This study examined the prevalence of retinopathy in 2131 patients with type 2 diabetes attending a Beijing hospital for the first time. The median age of patients was 58 years (IQR 50-65). The overall prevalence of retinopathy was 27.3% (95% CI: 25.4-29.2) and for proliferative retinopathy 7.8% (9... ( view more )5% CI: 6.7-8.9). When all patients were considered together, duration of diabetes (OR=1.8; P=0.001) and albumin excretion rate (OR=1.5; P=0.019) were independent risk factors for retinopathy. Blue-collar occupation (OR=1.5; P=0.047) and blood pressure (OR=1.2; P=0.021) were additional risk factors for non-proliferative and proliferative retinopathy respectively. Amongst the 773 newly diagnosed patients, 21% (95% CI: 17.8-23.6) already had retinopathy. The median age of those patients with retinopathy at diagnosis of diabetes was 3 years higher that those without retinopathy, and blue-collar workers (OR=2.2; P=0.012) as well as female gender were particularly at risk (OR=2.0; P=0.033). There was a strong correlation between duration of diabetes with the presence of retinopathy (r=0.95; P=0.01). By extrapolation, it could be estimated that some degree of hyperglycaemia might have been present for more than 20 years before diabetes was diagnosed. These findings emphasise the importance of earlier diagnosis of diabetes and its complications, especially in socially disadvantaged groups ( view less ) Ozmen, B. and Boyvada, S. Background: Diabetes mellitus (DM) is a major health problem with long-term microvascular and macrovascular complications responsible for the majority of its mortality and morbidity. The development and progression of diabetic complications are strongly related to the degree of glycemic control. To... ( view more ) decrease the occurrence of these complications, instruments for self-monitoring of blood glucose (SMBG) have been developed and have become widely used among diabetic patients. In this study, we determined the relationship between SMBG control and glycosylated haemoglobin (HbAlc) levels in patients with type 2 diabetes, with and without diabetic retinopathy. Methods: Two hundred and sixty-seven type 2 diabetic patients (mean age [mean+/-S.D.]: 58.07+/-9.13 years, duration of diabetes: 8.63+/-6.8 years) participated in this study. Following an educational program on SMBG, glucometers and usage of oral antidiabetic agents or insulin, optic fundi were examined and HbAlc levels were measured at baseline and after 6 and 12 months. The patients were classified in three groups according to their funduscopic findings: without retinopathy (n=140, 52.4%), background retinopathy (n=75, 28.1%) and proliferative retinopathy (n=52, 19.5%). Results: HbAlc levels at baseline, after 6 and 12 months were 9.09+/-2.69%, 7.47+/-1.78% and 7.12+/-1.4%, respectively, mean+/-S.D. The values decreased significantly after the education program (P<.001 for both values compared with baseline). The prevalence of retinopathy (both background and proliferative) was 0.8% in the group of diabetics with a mean HbAlc level <6%, 7.1% in those between 6.1% and 6.9%; 9.4% in those between 7% and 7.9%; 11.8% between 8% and 8.9%; and 70.9% in those exceeding a mean HbAlc level of 9%. There was a statically significant relationship between proliferative diabetic retinopathy and body mass index (BMI; P<.001). The same relationship was observed between duration of diabetes and diabetic retinopathy (P<.001), but not between sex and diabetic retinopathy (P=.46). Conclusions: Implementing a program of SMBG control in type 2 diabetic patients results in lower levels of HbAlc at 6 and 12 months. In the group without diabetic retinopathy at 6- and 12-month controls, the mean HbAlc concentration is less than 7%, but in the group with diabetic (background and proliferative) retinopathy, this value could not be reduced below 7%. These results imply that SMBG would allow us to maintain better metabolic control by improving HbAlc levels and we have always kept in mind that SMBG was a part of an educational program. On the other hand, improving glycemic control prevents the onset or progression of diabetic microvascular complications, such as diabetic retinopathy, nephropathy and neuropathy. Long-term clinical studies should be performed to determine cost-effectiveness and the effects of SMBG on diabetic complications, morbidity and mortality. (C) 2003 Elsevier Science Inc. All rights reserved ( view less ) Hove, M. N., Kristensen, J. K., Lauritzen, T., and Bek, T. PURPOSE: To determine the prevalence of diabetic retinopathy and the causes of visual impairment in an unselected population of type 2 diabetes patients, and to describe the risk factors for developing diabetic retinopathy in this population. METHODS: A total of 10 851 type 2 diabetes patients were... ( view more ) identified in the county of Arhus. A representative sample of 378 patients underwent a routine ocular examination, including fundus photography. Blood pressure and serum haemoglobin A1c, total cholesterol, high density lipoprotein cholesterol, triglyceride and apolipoprotein a were measured. RESULTS: The prevalence of diabetic retinopathy in the type 2 diabetes population was 31.5%. In all, 2.9% had proliferative diabetic retinopathy and 5.3% had clinically significant macular oedema. Of the latter, 8/20 (40%) were newly identified and had not yet been laser-treated. There was a positive correlation between severity of retinopathy and duration of diabetes, HbA(1c), systolic blood pressure and treatment with insulin. None of the patients had social blindness (visual acuity < 0.1), but 15/378 (4.0%) had developed visual impairment (VA < 0.3). CONCLUSION: The prevalence of diabetic retinopathy and visual impairment in this unselected type 2 diabetes population was lower than anticipated from the existing literature, and causes other than diabetic retinopathy contributed significantly to the occurrence of visual loss. A substantial number of the patients with vision-threatening diabetic maculopathy had not been referred for timely photocoagulation treatment ( view less ) Younis, N., Broadbent, D. M., Vora, J. P., and Harding, S. P. Background: Incidence data on which to base targets and protocols for screening for sight-threatening diabetic retinopathy are few. We aimed to investigate yearly and cumulative incidence of any retinopathy, maculopathy, and sight-threatening diabetic retinopathy in patients with type 2 diabetes in... ( view more ) an established systematic programme and to calculate optimum screening intervals according to retinopathy grade at baseline. Methods: We investigated all patients with type 2 diabetes registered with enrolled general practices (except those who were attending an ophthalmologist) who had retinopathy data available at baseline and at least one further screening event. To screen patients, we used non-stereoscopic three-field mydriatic photography and modified Wisconsin grading. Sight-threatening diabetic retinopathy was defined as moderate preproliferative retinopathy or worse, or clinically significant maculopathy in either or both eyes. Findings: Results were obtained from 20 570 screening events. Yearly incidence of sight-threatening diabetic retinopathy in patients without retinopathy at baseline was 0.3% (95% CI 0.1-0.5) in the first year, rising to 1.8% (1.2-2.5) in the fifth year; cumulative incidence at 5 years was 3.9% (2.8-5.0). Rates of progression to sight-threatening diabetic retinopathy in year 1 by baseline status were: background 5.0% (3.5-6.5), and mild preproliferative 15% (10.2-19.8). For a 95% probability of remaining free of sight-threatening diabetic retinopathy, mean screening intervals by baseline status were: no retinopathy 5.4 years (95% CI 4.7-6.3), background 1.0 years (0.7-1.3), and mild preproliferative 0.3 years (0.2-0.5).Interpretation: A 3-year screening interval could be safely adopted for patients with no retinopathy, but yearly or more frequent screening is needed for patients with higher grades of retinopathy ( view less ) Balme, M., McAllister, I., Davis, W. A., and Davis, T. M. AIMS: To determine the prevalence of retinopathy and its associations in patients diagnosed clinically with Type 2 diabetes and serum antibodies to glutamic acid decarboxylase (GADA) from a community-based sample. METHODS: In a case-control design, 24 GADA-positive Type 2 patients from the Fremantl... ( view more )e Diabetes Study (FDS) cohort were recruited and matched as closely as possible for age, sex and diabetes duration with 72 GADA-negative Type 2 patients from the FDS. Each patient had a detailed clinical and biochemical assessment including slit lamp biomicroscopy and colour fundus photography with Wisconsin Epidemiologic Study of Diabetic Retinopathy (WESDR) grading. RESULTS: The GADA-positive patients had a significantly higher HbA1c (median (interquartile range); 8.4 (7.3, 9.6)%) than those who were GADA-negative (7.2 (6.5, 8.1)%: P = 0.002). The overall prevalence of retinopathy amongst the 96 subjects was 26.0%. The majority (92%) of the retinopathy detected was mild and non-proliferative. GADA-positive patients had double the retinopathy prevalence of the GADA-negative group (41.7% vs. 20.8%; P = 0.044). In a logistic regression model, diabetes duration, HbA1c, systolic blood pressure and current smoking were each significantly and independently predictive of retinopathy (P < 0.025), but GADA status was not. CONCLUSIONS: These data show that GADA-positive patients have an increased prevalence of retinopathy compared with GADA-negative controls with Type 2 diabetes from an urban Australian community. This increased prevalence is due mainly to relatively poor glycaemic control in the GADA-positive group ( view less ) Balme, M., McAllister, I., Davis, W. A., and Davis, T. M. AIMS: To determine the prevalence of retinopathy and its associations in patients diagnosed clinically with Type 2 diabetes and serum antibodies to glutamic acid decarboxylase (GADA) from a community-based sample. METHODS: In a case-control design, 24 GADA-positive Type 2 patients from the Fremantl... ( view more )e Diabetes Study (FDS) cohort were recruited and matched as closely as possible for age, sex and diabetes duration with 72 GADA-negative Type 2 patients from the FDS. Each patient had a detailed clinical and biochemical assessment including slit lamp biomicroscopy and colour fundus photography with Wisconsin Epidemiologic Study of Diabetic Retinopathy (WESDR) grading. RESULTS: The GADA-positive patients had a significantly higher HbA1c (median (interquartile range); 8.4 (7.3, 9.6)%) than those who were GADA-negative (7.2 (6.5, 8.1)%: P = 0.002). The overall prevalence of retinopathy amongst the 96 subjects was 26.0%. The majority (92%) of the retinopathy detected was mild and non-proliferative. GADA-positive patients had double the retinopathy prevalence of the GADA-negative group (41.7% vs. 20.8%; P = 0.044). In a logistic regression model, diabetes duration, HbA1c, systolic blood pressure and current smoking were each significantly and independently predictive of retinopathy (P < 0.025), but GADA status was not. CONCLUSIONS: These data show that GADA-positive patients have an increased prevalence of retinopathy compared with GADA-negative controls with Type 2 diabetes from an urban Australian community. This increased prevalence is due mainly to relatively poor glycaemic control in the GADA-positive group ( view less ) de, FineOlivariusN, Nielsen, N. V., and Andreasen, A. H. BACKGROUND: The exact role of factors such as serum lipids, body mass index and (micro-)albuminuria as possible determinants of diabetic retinopathy remains to be determined. We have scrutinized the prevalence of diabetic retinopathy and its concomitants in terms of risk factors and other diabetic ... ( view more )complications in newly diagnosed diabetic patients. METHODS: A population-based sample of 1,251 newly diagnosed diabetic patients aged 40 years or over was established in general practice. Median age was 65.3 years. Funduscopy was performed by practising ophthalmologists. Blood and urine analyses were centralised. RESULTS: The overall prevalence of diabetic retinopathy was 5.0%. Only three patients had proliferative diabetic retinopathy. As expected, diabetic retinopathy and renal involvement, as expressed by the urinary albumin/creatinine ratio. were strongly positively associated. An intriguing finding was that of an inverse relationship between fasting triglycerides and diabetic retinopathy, an association that proved to be confined to microalbuminuric patients. An inverse association between body mass index and diabetic retinopathy was found only univariately. CONCLUSION: The low prevalence of diabetic retinopathy cannot be explained by the screening method alone, but rather by early detection of diabetes in a non-selective patient sample. It seems that renal involvement modifies the expected relationship between diabetic retinopathy and triglycerides, but a pathophysiological mechanism is not available ( view less ) Eggertsen, R., Kalm, H., and Blohme, G. Patients with type 2 diabetes (NIDDM) attending the Primary Care Centre in Molnlycke, Sweden, were evaluated regarding their metabolic status, microalbuminuria (UAER), and hypertension. An ophthalmological examination was performed, and two diagnostic methods, slit-lamp biomicroscopy and fundus pho... ( view more )tography, were compared. Nearly half the patients (42%) had diabetic retinopathy, mainly of the background type. Retinopathy was associated only with the duration of the disease, but the prevalence was as high as 20% within 0-4 years of the diagnosis. Fundus photography was easy to apply, except in the age groups above 80 years, in otherwise healthy and mentally cooperative patients. Fundus photography could not be applied in only 7% of the patients for ophthalmological reasons. The prevalence of microalbuminuria (20-200 micrograms/min) was high--34%--with another 8% above that range. Male sex, mode of antidiabetic treatment, and hypertension were associated with an increased UAER. Screening for retinopathy and microalbuminuria is valuable in primary health care in order to detect treatable diabetic retinopathy and to trace patients with microalbuminuria, a risk factor for clinically overt nephropathy as well as for cardiovascular diseases ( view less ) Delcourt, C., Villatte-Cathelineau, B., Vauzelle-Kervroedan, F., and Papoz, L. The clinical correlates of advanced retinopathy were determined in a sample of 427 type II diabetic outpatients, aged 35 to 74 years, recruited in eight centers from all parts of France. The presence of retinopathy was assessed by fluorescein angiography with centralized interpretation. Advanced re... ( view more )tinopathy (proliferative and/or macular edema) was independently linked with nephropathy, peripheral neuropathy, and insulin therapy. Prevalence of advanced retinopathy was 1.6% in the absence of signs of nephropathy and/or peripheral neuropathy, 10.4% in patients with mild signs, and 17.5% in patients with moderate to severe signs. Overall, 87% of the patients with advanced retinopathy had signs of nephropathy and/or peripheral neuropathy. In conclusion, patients showing signs of nephropathy and/or peripheral neuropathy should be sent in priority to an ophthalmologist. Prospective data are necessary to determine if screening is necessary in patients with no signs of nephropathy or peripheral neuropathy ( view less ) Henricsson, M., Gottsater, A., Jeppsson, J. O., Fernlund, P., and Sundkvist, G. OBJECTIVES: To examine the relationship between previous glycaemic exposure and prevalence of retinopathy 8 years after diagnosis of diabetes in 58 islet cell antibodies (ICA)-negative noninsulin-dependent diabetes mellitus (NIDDM) patients and in a group of 14 ICA-positive 'NIDDM' and insulin-depe... ( view more )ndent diabetes mellitus (IDDM) patients. DESIGN AND METHODS: The Wisconsin retinopathy scale was used to assess the retinopathy which was graded into mild, moderate and severe nonproliferative diabetic retinopathy (NPDR), or proliferative retinopathy (PDR). The frequency and severity of retinopathy was related to HbA1c levels at diagnosis, and 3 and 5 years later. RESULTS: Thirty of the 58 ICA-negative NIDDM patients (52%) but only 2 of the 14 ICA-positive 'NIDDM' or IDDM patients (14%) had mild-moderate-severe NPDR 8 years after diagnosis (P = 0.02). None had PDR. Retinopathy 8 years after diagnosis in NIDDM (= 58 ICA-negative patients) was correlated with the degree of glycaemic control (HbA1c levels) at 3 and 5 years after diagnosis, but not to HbA1c levels at diagnosis. The relative risk for a higher average HbA1c (per percentage) at 3 and 5 years was 1.56 for any retinopathy vs. no retinopathy (95% confidence interval 1.1-2.2; P = 0.01) and 1.68 for moderate to severe NPDR in comparison with no DR and mild NPDR (95% confidence interval 1.0-2.8; P = 0.04). CONCLUSIONS: Retinopathy after 8 years of diabetes in NIDDM patients was associated with impaired glycaemic control during previous years but not with glycaemic control at baseline. Good glycaemic control may prevent retinopathy in patients with NIDDM ( view less ) Krakoff, J., Lindsay, R. S., Looker, H. C., Nelson, R. G., Hanson, R. L., and Knowler, W. C. OBJECTIVE: To examine the risk of retinopathy and nephropathy in participants in whom type 2 diabetes was diagnosed in youth (before 20 years of age) compared with those in whom type 2 diabetes was diagnosed at older ages. RESEARCH DESIGN AND METHODS: Subjects in whom youth-onset or adult-onset dia... ( view more )betes was diagnosed in the longitudinal study of health in the Pima Indians of Arizona were followed for microvascular complications. Diabetes was diagnosed in 178 subjects before 20 years of age (youth), in 1,359 subjects at 20-39 years of age (younger adults), and in 971 subjects at 40-59 years of age (older adults). Incidence rates of diabetic retinopathy diagnosed by direct ophthalmoscopy through dilated pupils and nephropathy (protein-to-creatinine ratio > or =0.5 g/g) were calculated by age at diagnosis. RESULTS: Over 25 years, nephropathy developed in 35 of the participants with youth-onset type 2 diabetes; this incidence rate was not significantly different from that in patients with adult-onset diabetes (P = 0.77). Incidence rates of retinopathy, however, were significantly lower for the youth-onset group (P = 0.007). Adjusted for sex, glycemia, and blood pressure, risk of retinopathy was lower in patients with youth-onset diabetes than in those with adult-onset diabetes (hazard rate ratio [HRR] 0.42, 95% CI 0.24-0.74, P = 0.003), but risk of nephropathy was not different (HRR 1.2, 95% CI 0.77-1.3, P = 0.38). CONCLUSIONS: In Pima Indians, the risk of nephropathy as a function of duration of diabetes is similar in all age groups. By contrast, the risk of retinopathy is lower in patients with youth-onset type 2 diabetes ( view less ) Gimeno-Orna, J. A., Castro-Alonso, F. J., Boned-Juliani, B., and Lou-Arnal, L. M. AIMS/HYPOTHESIS: The purpose of this study was to determine whether plasma glucose variability, irrespective of glycated hemoglobin (HbA1c), was able to predict the onset of retinopathy in Type 2 diabetic patients. METHODS: The study was based on a cohort of 130 Type 2 diabetic patients without ret... ( view more )inopathy recruited from June 1994 to June 1998. The fundus was reexamined between November 2000 and June 2001, with a mean follow-up period of 5.2 years. Fasting plasma glucose (FPG) variability was measured by its variation coefficient (VC). Stratified and multivariate models were used to estimate the effect of FPG variability and mean HbA1c during follow-up on cumulative incidence (IP) of retinopathy. RESULTS: The IP of retinopathy was 36.2% and increased all along the quartiles of FPG variability (P=.001). In multivariate analyses, only the last quartile of the distribution of VC (OR=3.68; 95% confidence interval (CI) 1.01-13.4; P=.049) was significant. The term of interaction between mean HbA1c and VC was not significant. CONCLUSIONS/INTERPRETATION: FPG variability fulfills criteria to be considered a risk factor for retinopathy: A statistically significant association exists after adjustment for confounders, time sequence, dosage response gradient, and biological plausibility ( view less ) Jenchitr, W., Samaiporn, S., Lertmeemongkolchai, P., Chongwiriyanurak, T., Anujaree, P., Chayaboon, D., and Pohikamjorn, A. Three thousand and forty nine patients diagnosed with diabetes mellitus were examined in 13 community (district) hospitals in Lampang from January to December 2002. Complete eye examination with standard protocol was used to determine the prevalence and severity of diabetic retinopathy. The prevale... ( view more )nce of the background or non-proliferative diabetic retinopathy (BDR or NPDR) was 18.9% and proliferative diabetic retinopathy (PDR) was 3% in all age groups. For the relationship of the duration of diabetes, it showed that the longer the duration of diabetes the higher the prevalence of diabetic retinopathy. In BDR or NPDR, the retinopathy varied from 13.11 to 22.91% in persons having diabetes for less than 10 years and up to 42.86% in those with diabetes for up to 20 years. In the PDR group, the prevalence was 2.15 to 2.42% in persons with diabetes for less than 10 years and up to 10.20% for those with diabetes for up to 20 years. The severity of retinopathy was found to be not only related to a longer duration of diabetes but also related to higher glycosylated hemoglobin levels, higher systolic blood pressure and the presence of proteinuria ( view less ) West, S. K., Munoz, B., Klein, R., Broman, A. T., Sanchez, R., Rodriguez, J., and Snyder, R. PURPOSE: Risk factors for type II diabetes and diabetic retinopathy were determined in a population-based study of Mexican-Americans. DESIGN: Proyecto VER (Vision, Evaluation, and Research) is a cross-sectional study in a random sample of the self-described Hispanic populations in Tucson and Nogale... ( view more )s, Arizona, age 40 and older. METHODS: Of 6,659 eligible subjects, 4,774 (72%) participated in the home questionnaire and clinic visit. Diabetes was defined as self-report of a physician diagnosis or hemoglobin A(1c) value of > or = 7.0%. Only type II diabetes was included. Diabetic retinopathy was assessed on stereo fundus photographs of all persons with diabetes. Questions were asked about demographic, personal, socioeconomic, and diabetes related variables. RESULTS: 1023 (21.4%) of the sample had type II diabetes, and 68% were in the low-income group (annual income less than $20,000). Diabetes was associated with Native-American ancestry, higher acculturation, low income, less education, and increasing body mass index after age and gender adjustment. Persons with previously undiscovered diabetes were more likely to have no regular source of care, no insurance, and currently smoke compared with persons with known diabetes. Only low income was related to proliferative retinopathy, once adjusted for other factors (odds ratio [OR] = 3.93, 95%, confidence limitations [CL] = 1.31-11.80). CONCLUSIONS: Several socioeconomic and other factors were associated with diabetes, but few were related to diabetic retinopathy. Persons in the low-income group appeared to be at greater risk of diabetes and the ocular complications of diabetes compared with those with more income. Further longitudinal studies in this population are needed to confirm the associations ( view less ) Chen, M. S., Kao, C. S., Chang, C. J., Wu, T. J., Fu, C. C., Chen, C. J., and Tai, T. Y. In a population-based study in Taiwan, 11,478 subjects aged 40 years or older were screened for diabetes in one urban and five rural areas. Among the 715 subjects proven to have diabetes, 527 subjects underwent ophthalmoscopy. Diabetic retinopathy was present in 184 of the 527 subjects (35.0%), inc... ( view more )luding background diabetic retinopathy in 157 subjects (30.0%), preproliferative diabetic retinopathy in 15 subjects (2.8%), and proliferative diabetic retinopathy in 12 subjects (2.2%). Diabetic retinopathy was correlated with the duration of diabetes and age at onset of diabetes, type of diabetes treatment, higher serum creatinine levels, and lower serum cholesterol levels. Several other factors, including gender, age, residential area, family income, educational level, control and family history of diabetes, body mass index, physical activity, exercise, cigarette smoking, stroke, ischemic heart disease, leg vessel disease, hypertension, and proteinuria, had no significant association with retinopathy. By multiple logistic regression analysis, duration of diabetes was the most important risk factor related to retinopathy. Diabetic subjects treated with insulin had a higher risk of developing retinopathy than those treated with dietary control (relative risk, 1.57; .05 < P < .10). The univariate analysis disclosed that proliferative diabetic retinopathy was related to older age at examination, older age at onset of diabetes, type of diabetes treatment, and presence of leg vessel disease. Insulin-treated diabetic subjects also had a higher risk of proliferative diabetic retinopathy than patients in whom diabetes was controlled by diet, with a relative risk of 2.51 (.05 < P < .10) in the multiple logistic regression analysis ( view less ) Rema, M., Deepa, R., and Mohan, V.AIM: To assess the prevalence of retinopathy in newly diagnosed south Indian type 2 diabetic patients attending a diabetic centre. METHODS: 448 consecutive newly diagnosed type 2 diabetic patients were recruited. Four field retinal colour photography was performed and graded using a modified form o... ( view more )f the Early Treatment Diabetic Retinopathy Study grading system. RESULTS: Of the 438 patients with assessable photographs, 32 (7.3%, 95% confidence interval 5.0 to 10. 2) had retinopathy. None of the variables tested showed a significant association with retinopathy on univariate or multivariate logistic regression analysis. CONCLUSION: The overall prevalence of retinopathy at diagnosis among clinic based south Indian patients with type 2 diabetes appears to be lower than that reported among Europeans ( view less ) Litwin, A. S., Clover, A., Hodgkins, P. R., and Luff, A. J. AIM: To determine the relationship between affluence and the presence of diabetic retinopathy at time of diagnosis of Type 2 diabetes. METHODS: Records of patients held by Southampton Retinal Screening Programme were examined. Patients (n = 1844) newly diagnosed with Type 2 diabetes and subsequentl... ( view more )y receiving photographic retinal screening within 24 months were selected. Townsend scores for social deprivation were calculated and the patients with and without retinopathy at first screening were then compared. RESULTS: No significant difference was found in the median Townsend score of those people with (-0.2, interquartile range (IQR) -3.7 to 3.8) and those without (-0.5, IQR -3.3 to 3.6) diabetic retinopathy at first screening after diagnosis of Type 2 diabetes (P = 0.6). CONCLUSION: The relative affluence of the area in which a person lives, as judged by postcode, does not appear to predict likelihood of diabetic retinopathy at diagnosis of Type 2 diabetes ( view less ) Hansson-Lundblad, C., Holm, K., Agardh, C.-D., and Agardh, E. Purpose: The present study describes the prevalence of visual impairment and blindness in a geographically defined population 8 years after the introduction of a screening programme in 1987 for early detection of sight-threatening diabetic retinopathy. Methods: Of 374 patients with diabetes, compri... ( view more )sing 2.6% of the population in the study community, 72% were examined with fundus photography or biomicroscopy during 1994-95. These patients form the basis of this study. The screening programme was fulfilled by 93% of subjects, all of whom underwent ophthalmic examinations at least every other year. A total of 79 eyes in 52 patients received photocoagulation for macular oedema alone or in combination with severe non-proliferative or proliferative retinopathy. Results: Eight years after the implementation of the programme, only three patients, all with type 2 diabetes (diabetes diagnosed at or after 30 years of age), had visual acuity <=0.1. The total number of eyes with visual acuity <=0.5 was higher in insulin-treated type 2 diabetic patients (n = 20) than in those on oral treatment (n = 5) or diet treatment only (n = 1) (p=0.006 in both cases). The only independent risk factor for visual impairment in eyes with sight-threatening retinopathy was age. Conclusion: A small number of older type 2 diabetic patients end up with visual impairment due to unsuccessful photocoagulation of macular oedema ( view less ) Zander, E., Heinke, P., Herfurth, S., Reindel, J., Ostermann, F. E., and Kerner, W. The pathogenetic process of diabetic retinopathy and the role of different systemic risk factors in IDDM and NIDDM is not completely understood. The aim of the present cross-sectional clinical study was (1) to compare the prevalence of systemic risk factors for diabetic retinopathy in IDDM and NIDD... ( view more )M patients, (2) to determine relations between these risk factors and the degree of retinopathy and (3) to evaluate the relationship between retinopathy and neuropathy. The study included 1,218 IDDM and 784 NIDDM patients attending our hospital during 1994. The mean diabetes duration was 15.4 and 13.2 years, respectively. IDDM patients with proliferative retinopathy were characterized by higher mean age of 46.4 +/- 1.08 vs. 21.8 +/- 0.42 years and longer diabetes duration of 30.0 +/- 0.79 vs. 7.7 +/- 0.26 years. Among the NIDDM patients, those ones with proliferative retinopathy had the lowest mean age of 40.5 +/- 1.42 vs. 49.7 +/- 0.61 years (p < 0.01) at diabetes manifestation. There was no statistical difference between mean HbA1c concentrations in relation to retinopathy stages. Albumin excretion was increased in both IDDM and NIDDM patients with proliferative retinopathy (p < 0.01) along with increased BMI of IDDM and increased insulin requirement of NIDDM patients (p < 0.01). Multiple regression analysis showed that proliferative retinopathy with the inclusion of non-proliferative retinopathy of IDDM and NIDDM patients was significantly correlated with diabetes duration, albumin excretion, somatic and autonomic neuropathy (p < 0.01). In NIDDM patients proliferative retinopathy with the inclusion of non-proliferative retinopathy was correlated with the age at diabetes manifestation and with cholesterol levels (p < 0.05). In IDDM and NIDDM patients proliferative retinopathy was found to be correlated with somatic and autonomic neuropathy, albumin excretion (p < 0.01) and hypertension (p < 0.05). The importance of the significant correlation of autonomic neuropathy both with background and proliferative retinopathy in IDDM and NIDDM patients needs to be prospectively investigated ( view less ) Agardh, C. D., Agardh, E., and Torffvit, O. The aim of the present study was to evaluate the risk for vascular morbidity or death and retinopathy in relation to urinary albumin concentration. To that end, we performed a 5-year follow-up study of all type 2 diabetic patients attending the outpatient-clinic. A total of 444 (98.4%) out of 451 a... ( view more )dult patients initially studied were evaluated for the degree of retinopathy and levels of HbA1c blood pressure, serum creatinine and urinary albumin. Vascular morbidity and causes of death were registered by one and the most severe event only. Forty-seven patients developed atherosclerotic vascular disease, i.e. myocardial infarction (n = 19), cerebrovascular disease (n = 20), or amputation (n = 8), and 42 died. The observed annual mortality rate was 22.1/1000 compared to an expected rate of 13.6/1000 for the general population with corresponding age and sex. Urinary albumin concentration was found to be a prognostic marker for the development of vascular disease and death in patients treated with insulin at baseline (P < 0.01), whereas this was not the case in patients treated with diet and/or oral agents at baseline. However, insulin treatment per se was not associated with an increased mortality or mortality or morbidity. Urinary albumin concentration was not correlated with incidence or progression of retinopathy regardless of type of diabetes treatment. In conclusion, this study showed that albuminuria was a prognostic factor for vascular morbidity and death in type 2 diabetic patients treated with insulin but not in patients treated with diet or oral agents. Furthermore, albuminuria was not a predictor for incidence or progression of retinopathy ( view less )
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