From the Steno Diabetes Center, Copenhagen (P.G., P.V., N.L., H.-H.P., O.P.); Herlev County Hospital, Herlev (N.L.); Amtssygehuset Roskilde, Roskilde (G.V.H.J.); and the Faculty of Health Science, Aarhus University, Aarhus (H.-H.P., O.P.) — all in Denmark. Address reprint requests to Dr. Pedersen at the Steno Diabetes Center, Niels Steensens Vej 2, 2820 Gentofte, Denmark, or at oluf@steno.dk. N Engl J Med 2003;348:383-93. Copyright © 2003 Massachusetts Medical Society. background Cardiovascular morbidity is a major burden in patients with type 2 diabetes. In the Steno-2 Study, we compared the effect of a targeted, intensified, multifactorial intervention with that of conventional treatment on modifiable risk factors for cardiovascular disease in patients with type 2 diabetes and microalbuminuria. methods The primary end point of this open, parallel trial was a composite of death from cardiovascular causes, nonfatal myocardial infarction, nonfatal stroke, revascularization, and amputation. Eighty patients were randomly assigned to receive conventional treatment in accordance with national guidelines and 80 to receive intensive treatment, with a stepwise implementation of behavior modification and pharmacologic therapy that targeted hyperglycemia, hypertension, dyslipidemia, and microalbuminuria, along with secondary prevention of cardiovascular disease with aspirin. results The mean age of the patients was 55.1 years, and the mean follow-up was 7.8 years. The decline in glycosylated hemoglobin values, systolic and diastolic blood pressure, serum cholesterol and triglyceride levels measured after an overnight fast, and urinary albumin excretion rate were all significantly greater in the intensive-therapy group than in the conventional-therapy group. Patients receiving intensive therapy also had a significantly lower risk of cardiovascular disease (hazard ratio, 0.47; 95 percent confidence interval, 0.24 to 0.73), nephropathy (hazard ratio, 0.39; 95 percent confidence interval, 0.17 to 0.87), retinopathy (hazard ratio, 0.42; 95 percent confidence interval, 0.21 to 0.86), and autonomic neuropathy (hazard ratio, 0.37; 95 percent confidence interval, 0.18 to 0.79). conclusions A target-driven, long-term, intensified intervention aimed at multiple risk factors in patients with type 2 diabetes and microalbuminuria reduces the risk of cardiovascular and microvascular events by about 50 percent.

https://www.nejm.org/doi/pdf/10.1056/NEJMoa021778

Multifactorial Intervention and Cardiovascular Disease in Patients with Type 2 Diabetes

This statement examines the cardiovascular complications of diabetes mellitus and considers opportunities for their prevention. These complications include coronary heart disease (CHD), stroke, peripheral arterial disease, nephropathy, retinopathy, and possibly neuropathy and cardiomyopathy. Because of the aging of the population and an increasing prevalence of obesity and sedentary life habits in the United States, the prevalence of diabetes is increasing. Thus, diabetes must take its place alongside the other major risk factors as important causes of cardiovascular disease (CVD). In fact, from the point of view of cardiovascular medicine, it may be appropriate to say, “diabetes is a cardiovascular disease.”

The most prevalent form of diabetes mellitus is type 2 diabetes. This disorder typically makes its appearance later in life. The underlying metabolic causes of type 2 diabetes are the combination of impairment in insulin-mediated glucose disposal (insulin resistance) and defective secretion of insulin by pancreatic β-cells. Insulin resistance develops from obesity and physical inactivity, acting on a substrate of genetic susceptibility.1 2 Insulin secretion declines with advancing age,3 4 and this decline may be accelerated by genetic factors.5 6 Insulin resistance typically precedes the onset of type 2 diabetes and is commonly accompanied by other cardiovascular risk factors: dyslipidemia, hypertension, and prothrombotic factors.7 8 The common clustering of these risk factors in a single individual has been called the metabolic syndrome. Many patients with the metabolic syndrome manifest impaired fasting glucose (IFG)9 even when they do not have overt diabetes mellitus.10 The metabolic syndrome commonly precedes the development of type 2 diabetes by many years11 ; of great importance, the risk factors that constitute this syndrome contribute independently to CVD risk.

Recently, new criteria have been accepted for the diagnosis of diabetes.9 The upper threshold of fasting plasma glucose for the …

https://cdr.lib.unc.edu/downloads/m900nw482

Diabetes and cardiovascular disease : A statement for healthcare professionals from the American heart association

In 2005, it was estimated that more than 20 million people in the United States had diabetes. Approximately 30% of these people had undiagnosed cases. Increased risk for diabetes is primarily associated with age, ethnicity, family history of diabetes, smoking, obesity, and physical inactivity. Diabetes-related complications—including cardiovascular disease, kidney disease, neuropathy, blindness, and lower-extremity amputation—are a significant cause of increased morbidity and mortality among people with diabetes, and result in a heavy economic burden on the US health care system. With advances in treatment for diabetes and its associated complications, people with diabetes are living longer with their condition. This longer life span will contribute to further increases in the morbidity associated with diabetes, primarily in elderly people and in minority racial or ethnic groups. In 2050, the number of people in the United States with diagnosed diabetes is estimated to grow to 48.3 million. Results from randomized controlled trials provide evidence that intensive lifestyle interventions can prevent or delay the onset of diabetes in high-risk individuals. In addition, adequate and sustained control of blood sugar levels, blood pressure, and blood lipid levels can prevent or delay the onset of diabetes-related complications in people with diabetes. Effective interventions, at both the individual and population levels, are desperately needed to slow the diabetes epidemic and reduce diabetes-related complications in the United States. This report describes the current diabetes epidemic and the health and economic impact of diabetes complications on individuals and on the health care system. The report also provides suggestions by which the epidemic can be curbed.

/pdf/epidemiology-of-diabetes-and-diabetes-related-complications-1iyy5ab5ih.pdf

Epidemiology of Diabetes and Diabetes-Related Complications

Diabetic foot is a severe public health issue, yet rare studies investigated its global epidemiology. Here we performed a systematic review and meta-analysis through searching PubMed, EMBASE, ISI Web of science, and Cochrane database. We found that that global diabetic foot ulcer prevalence was 6.3% (95%CI: 5.4-7.3%), which was higher in males (4.5%, 95%CI: 3.7-5.2%) than in females (3.5%, 95%CI: 2.8-4.2%), and higher in type 2 diabetic patients (6.4%, 95%CI: 4.6-8.1%) than in type 1 diabetics (5.5%, 95%CI: 3.2-7.7%). North America had the highest prevalence (13.0%, 95%CI: 10.0-15.9%), Oceania had the lowest (3.0%, 95% CI: 0.9-5.0%), and the prevalence in Asia, Europe, and Africa were 5.5% (95%CI: 4.6-6.4%), 5.1% (95%CI: 4.1-6.0%), and 7.2% (95%CI: 5.1-9.3%), respectively. Australia has the lowest (1.5%, 95%CI: 0.7-2.4%) and Belgium has the highest prevalence (16.6%, 95%CI: 10.7-22.4%), followed by Canada (14.8%, 95%CI: 9.4-20.1%) and USA (13.0%, 95%CI: 8.3-17.7%). The patients with diabetic foot ulcer were older, had a lower body mass index, longer diabetic duration, and had more hypertension, diabetic retinopathy, and smoking history than patients without diabetic foot ulceration. Our results provide suggestions for policy makers in deciding preventing strategy of diabetic foot ulceration in the future. Key messages Global prevalence of diabetic foot is 6.3% (95%CI: 5.4-7.3%), and the prevalence in North America, Asia, Europe, Africa and Oceania was 13.0% (95%CI: 10.0-15.9%), 5.5% (95%CI: 4.6-6.4%), 5.1% (95%CI: 4.1-6.0%), 7.2% (95%CI: 5.1-9.3%), and 3.0% (95% CI: 0.9-5.0%). Diabetic foot was more prevalent in males than in females, and more prevalent in type 2 diabetic foot patients than in type 1 diabetic foot patients. The patients with diabetic foot were older, had a lower body mass index, longer diabetic duration, and had more hypertension, diabetic retinopathy, and smoking history than patients without diabetic foot.

https://www.tandfonline.com/doi/pdf/10.1080/07853890.2016.1231932

Global epidemiology of diabetic foot ulceration: a systematic review and meta-analysis†

Diabetes retinopathy (DR) is a leading cause of vision loss in middle-aged and elderly people globally. Early detection and prompt treatment allow prevention of diabetes-related visual impairment. Patients with diabetes require regular follow-up with primary care physicians to optimize their glycaemic, blood pressure and lipid control to prevent development and progression of DR and other diabetes-related complications. Other risk factors of DR include higher body mass index, puberty and pregnancy, and cataract surgery. There are weaker associations with some genetic and inflammatory markers. With the rising incidence and prevalence of diabetes and DR, public health systems in both developing and developed countries will be faced with increasing costs of implementation and maintenance of a DR screening program for people with diabetes. To reduce the impact of DR-related visual loss, it is important that all stakeholders continue to look for innovative ways of managing and preventing diabetes, and optimize cost-effective screening programs within the community.

https://www.onlinelibrary.wiley.com/doi/pdf/10.1111/ceo.12696

Diabetic retinopathy: global prevalence, major risk factors, screening practices and public health challenges: a review.

Aims: To study whether microalbuminuria, endothelial dysfunction and low-grade inflammation are associated with the presence and progression of diabetic retinopathy. Methods: Patients with Type 2 diabetes (n = 328) attending a diabetes clinic were followed for 10 years and examined annually during the last 7 years. Retinopathy was assessed after pupillary dilatation by direct ophthalmoscopy (baseline) and two-field 60°fundus photography (follow-up). Urinary albumin excretion, and markers of endothelial function (von Willebrand factor, tissue-type plasminogen activator, soluble E-selectin (sE-selectin), and soluble vascular cell adhesion molecule 1) and inflammatory activity (C-reactive protein and fibrinogen) were determined. Results: The prevalence of retinopathy was 33.8%. The median diabetes duration at baseline was 7 years (interquartile range 2-12 years). The highest tertiles of baseline urinary albumin excretion and glycated haemoglobin (HbA1c) were associated with prevalent retinopathy: odds ratio (OR) 95% confidence interval (CI) 2.80 (1.44-5.46) and 2.19 (1.11-4.32), respectively. Progression of retinopathy occurred in 188 patients. The second and third tertiles of baseline sE-selectin were associated with progression of retinopathy [1.44 (1.04-2.01) and 1.61 (1.19-2.18)] but not independently of HbA1c. None of the other markers was significantly associated with the presence or progression of retinopathy. High baseline HbA1c was significantly associated with progression of retinopathy: 1.65 (1.21-2.25). Conclusions: In this population of patients with Type 2 diabetes who attended a diabetes clinic, there was some evidence for a role of endothelial dysfunction in the progression of retinopathy. We could not demonstrate a role for low-grade inflammation. Our study emphasizes the importance of glycaemic control in the development and progression of retinopathy. © 2007 The Authors.

Endothelial dysfunction and low-grade inflammation and the progression of retinopathy in Type 2 diabetes.

OBJECTIVE: To evaluate trends in visual acuity and the cumulative incidence of diabetic retinopathy in a clinic-based observational follow-up study. RESEARCH DESIGN AND METHODS: All patients visiting Hvidore Hospital in 1984 whose diagnosis of IDDM had been made before 41 years of age and between 1965 and 1979 (n = 356) were followed until 1994 or until their deaths. All patients were Caucasians and resided in Copenhagen. Patients were divided into three prevalence cohorts based on time of diabetes onset: group A, 1965-1969 (n = 113); group B, 1970-1974 (n = 130); and group C, 1975-1979 (n = 113). RESULTS: Fifteen years after diabetes onset, the visual acuity was significantly improved in patients with increasing calendar year of the disease onset. The median (interquartile range) visual acuity was 1.0 (0.8-1.0), 1.0(0.9-1.0), and 1.0 (1.0-1.0) in groups A, B, and C, respectively (P < 0.01 overall; P = 0.28 for group A vs. group B; and P < 0.01 for group A vs. group C) with 60, 66, and 93 having a visual acuity of 1.0 in groups A, B, and C, respectively. The cumulative incidence (+/-SEM), expressed as a percentage and calculated according to the life-table method, of proliferative retinopathy, maculopathy, and laser-treated retinopathy 15 years after onset of diabetes were, respectively, 13+/-3, 11+/-3, and 12+/-3 in group A; 16+/-3, 12+/-3, and 21+/-4 in group B; 11+/-3, 5+/-2, and 12+/-3 in group C, respectively (NS). The development of proliferative retinopathy was associated with the degree of retinopathy and albuminuria at baseline and the mean HbA1c during follow-up. CONCLUSIONS: The study revealed an improvement in visual acuity with increasing calendar year of diabetes onset but an unchanged cumulative incidence of diabetic retinopathy.

Improved visual function in IDDM patients with unchanged cumulative incidence of sight-threatening diabetic retinopathy.

The prevalence of micro- and macroalbuminuria was determined in Type 2 (non-insulin-dependent) diabetic patients, less than 76 years of age, attending a diabetic clinic during 1987. All eligible patients (n=557) were asked to collect a 24-h urine sample for quantitative albumin analysis. Urine collections were obtained in 296 males and 253 females (96%). Normoalbuminuria were defined as urinary albumin excretion≤30 mg/24 h (n=323), microalbuminuria as 31–299 mg/24 h (n=151), and macroalbuminuria as ≥300 mg/ 24 h (n=75). The prevalence of macroalbuminuria was significantly higher in males (20%) than in females (6%), while the prevalence of microalbuminuria was almost identical in males (26%) and females (29%). The prevalence of arterial hypertension increased with increased albuminuria, being 48%, 68%, and 85% in patients with normoalbuminuria, microalbuminuria, and macroalbuminuria respectively. Prevalence of proliferative retinopathy rose with increasing albuminuria, being 2%, 5% and 12% in patients with normoalbuminuria, microalbuminuria, and macroalbuminuria respectively. Prevalence of coronary heart disease, based on Minnesota coded electrocardiograms, was more frequent in patients with macroalbuminuria (46%) compared to patients with microalbuminuria (26%) and patients with normoalbuminuria (22%). Foot ulcers were more frequent in micro- and macroalbuminuric patients, being 13% and 25%, respectively, compared to 5% in patients with normoalbuminuria. This cross-sectional study has revealed a high prevalence of microalbuminuria (27%) and macroalbuminuria (14%) in Type 2 diabetic patients. Patients with raised urinary albumin excretion are characterized by obesity, elevated haemoglobin Alc, increased frequency of arterial hypertension, proliferative retinopathy, coronary heart disease and foot ulcers. Thus, these findings suggest that urinary excretion of albumin should be monitored routinely in patients with Type 2 diabetes.

/pdf/prevalence-of-micro-and-macroalbuminuria-arterial-4qdj60d18p.pdf

Prevalence of micro- and macroalbuminuria, arterial hypertension, retinopathy and large vessel disease in European type 2 (non-insulin-dependent) diabetic patients.

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Endothelial dysfunction and low-grade inflammation and the progression of retinopathy in Type 2 diabetes.

Improved visual function in IDDM patients with unchanged cumulative incidence of sight-threatening diabetic retinopathy.

Prevalence of micro- and macroalbuminuria, arterial hypertension, retinopathy and large vessel disease in European type 2 (non-insulin-dependent) diabetic patients.