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Diabetes mellitus is a worldwide epidemic. Cardiovascular disease remains the major cause of morbidity and mortality in people with diabetes. Studies have suggested that increased risk of cardiovascular disease is not restricted to type II or type I diabetes mellitus, but extends to prediabetic stages such as impaired fasting glucose, impaired glucose tolerance, metabolic syndrome, and obesity. Insulin resistance, impaired fasting glucose, impaired glucose tolerance, and diabetes mellitus form a continuous sequence of risk for cardiovascular disease. Therefore, cardiovascular disease mortality and morbidity within the diabetes epidemic grow into vast proportions. Evidence also exists that diabetic patients have a high prevalence of heart failure or impaired diastolic and systolic cardiac function subsequent to the combination of coronary artery disease, hypertension, and diabetic cardiomyopathy. In view of the proportions of this new epidemic, prevention of diabetes and its prediabetic states is likely to be the most effective strategy to prevent serious cardiovascular events.
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PMID:Epidemiology of the diabetic heart. 1634 Apr 2

Considerable knowledge has accumulated in recent decades concerning the significance of physical activity in the treatment of a number of diseases, including diseases that do not primarily manifest as disorders of the locomotive apparatus. In this review we present the evidence for prescribing exercise therapy in the treatment of metabolic syndrome-related disorders (insulin resistance, type 2 diabetes, dyslipidemia, hypertension, obesity), heart and pulmonary diseases (chronic obstructive pulmonary disease, coronary heart disease, chronic heart failure, intermittent claudication), muscle, bone and joint diseases (osteoarthritis, rheumatoid arthritis, osteoporosis, fibromyalgia, chronic fatigue syndrome) and cancer, depression, asthma and type 1 diabetes. For each disease, we review the effect of exercise therapy on disease pathogenesis, on symptoms specific to the diagnosis, on physical fitness or strength and on quality of life. The possible mechanisms of action are briefly examined and the principles for prescribing exercise therapy are discussed, focusing on the type and amount of exercise and possible contraindications.
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PMID:Evidence for prescribing exercise as therapy in chronic disease. 1664 91

Diabetic dyslipoproteinemia is considered to be an integral component of type 2 diabetes mellitus and the metabolic syndrome. Major pathogenetic factors include abdominal obesity, insulin resistance and hyperglycemia with increased hepatic secretion of triglyceride-rich lipoproteins. Elevated concentrations of triglycerides and cholesterol, together with decreased HDL cholesterol are therefore found. LDL cholesterol is either normal or only slightly increased, but at the same time, the composition of the LDL particles is altered. This metabolic disorder contributes considerably to the clearly elevated cardiovascular risk. Dyslipoproteinemia, usually in the form of hypertriglyceridemia, may also occur in type 1 diabetes mellitus. Since general measures and good blood sugar control often fail to achieve the desired lipid levels, many patients require medication, initially usually statins, but, where necessary, combination treatment. In patients with isolated hypertriglyceridemia, treatment with fibrates may also be considered.
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PMID:[Diabetic dyslipoproteinemia]. 1666 77

Insulin resistance (IR) plays a larger role in the type 1 diabetes mellitus (T1DM) disease process than commonly recognized. Overweight and physical inactivity have increased steadily for the last 20-30 years in children and adolescents in many populations, concurrently with a rising incidence of T1DM. The role of IR in T1DM has only recently been gaining acceptance. This review will focus on how IR influences our current understanding of disease development and metabolic syndrome (MS) in T1DM. Increases in IR by weight gain and sedentarism, associated to decreased beta cell mass by autoimmune process, may disrupt normoglycemia in pre-T1DM individuals. IR may reflect a more aggressive form of autoimmune disease mediated by immuno-inflammatory factors that also mediate beta cell destruction (TNF-alpha and IL-6). These concepts are included in the "accelerator hypothesis". Moreover, family history of T2DM and chronic hyperglycemia (glucotoxicity), occurring after T1DM diagnosis, contribute to decrease peripheral glucose uptake. The onset of diabetic nephropathy (DN) might also contribute to IR and metabolic syndrome (MS) via low-grade inflammation and increased oxidative stress. MS is found between 12 to 40% in T1DM, especially in patients with advanced DN and poor glycemic control. These findings have therapeutic and cardiovascular prognostic implications as children make the transition toward adolescence and young adulthood T1DM.
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PMID:[Insulin resistance and metabolic syndrome in type 1 diabetes mellitus]. 1676 91

Recently, diabetes mellitus has become a global epidemic disease. There is a study indicating that type 2 diabetes mellitus (DM) is frequently found in children and teenager. Furthermore, in some countries, it is more frequent than type 1 diabetes mellitus.1 WHO stated that in the year of 2000, there were 177 million diabetes mellitus patient in the world and it is predicted that in the year of 2030, it will be increased to 366 million.2 This is very problematical for some countries such as India, People's Republic of China and Indonesia where the prevention and treatment facilities are still inadequate. To date, Indonesia has occupied the 4th rank, with predicted number of diabetes mellitus patient about 8.4 million and this number will be increased to 21.3 million in the year of 2030. There is no data about the number of patient with metabolic syndrome (MS) and insulin resistance syndrome (IR), but it should be higher than the number of diabetic patient. As we all have known, these conditions are the high-risk condition of diabetes mellitus development.2 One of reasons concerning why prevalence and pre-diabetic condition are increased (including the increased MS) is rising obesity frequency. In the United States, over 60% of recent adult population are overweight, which is defined as "body mass index" (BMI) 25; and about 30% of them have obesity, which is defined as BMI 30%.3 If diabetes mellitus occurred, cardiovascular disease (CVD) including coronary heart disease (CHD) also may occur. It is important to prevent the diabetes mellitus as well as to prevent the complication risk of CVD in diabetic patient.
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PMID:Prevention of cardiovascular disease in diabetes mellitus: by stressing the CARDS study. 1679 12

Differentiation of the various forms of diabetes is necessary for therapeutic reasons. Typical signs of type 2 diabetes are age over 40, obesity, and other markers for metabolic syndrome, a positive famitory, gradual development of the classical symptoms, and no evidence of ketosis. It is important to distinguish this from LADA (latent autoimmune diabetes of adulthood), a form of type 1 diabetes mellitus. To establish this differential diagnosis antibody testing is employed. Antibody tests in patients with newly manifest diabetes make good sense when the clinical diagnosis is not unequivocal, that is, to distinguish it from type 2 diabetes, MODY diabetes, hereditary and secondary forms. At present, immunodiagnosis is used too often in unambiguous cases of type 1 diabetes, but too rarely in supposed type 2 diabetes. As a rule, LADA patients are GADA-positive. If MODY diabetes is suspected, a genetic examination is indicated. In patients with GDM, antibody testing with GADA makes sense, in particular in slim patients receiving insulin treatment, since these patients have a high risk for developing a postpartum diabetes already in the first years.
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PMID:[Diabetes mellitus--differential diagnosis]. 1680 91

Active life and physical fitness may represent the most effective strategies to prevent chronic diseases and to improve growth and development for children, including those with diabetes. Observational studies have demonstrated the association between life style and prevention of chronic diseases in the general population. These studies have been showed a reduction of morbidity for vascular diseases in trained subjects who present adequate cardiovascular fitness and practise regular exercise. The exercise-related protective effects may be mediated in part through components of the metabolic syndrome: improved insulin sensitivity, decreased weight and visceral fat accumulation, reduced low density lipoprotein (LDL) and triglycerides, increased high density lipoprotein (HDL), decreased blood pressure. These effects are more significant in patients with type 1 diabetes (T1DM), because hyperglycemia-related morbidity and mortality are associated with chronic complications. In particular, improved insulin sensitivity may determine a better glucose profile which in turn may positively influence the diabetes-related microvascular complications. Furthermore, improved blood pressure and normalization of lipid profile may also contribute to the prevention of vascular complications. Nonetheless, physical activity can improve psychological well-being by increasing self-esteem and enhancing quality of life. Although patients with T1DM may participate in all kind of sports and physical activities, there are several potential adverse events, including hypoglycemic and hyperglycemic episodes, that can occur. Thus, patients and health professionals have to know in details the physiological effect of physical exercise and its metabolic events in order sport to be healthy and enjoyable for all children, adolescents and young adults with T1DM.
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PMID:Physical exercise and diabetes during childhood. 1691 68

Type 2 diabetes (DM-2) has become a major global health problem that has been fueled mainly by increasing obesity and aging of the population. Most studies show that arterial stiffening occurs across all age groups in both type 1 diabetes and DM-2, and among those with impaired fasting glucose, impaired glucose tolerance, and the metabolic syndrome. Arterial stiffening in DM-2 results, in part, from the clustering of hyperglycemia, dyslipidemia and hypertension, all of which may promote insulin resistance, oxidative stress, endothelial dysfunction, and the formation of pro-inflammatory cytokines and advanced glycosylation end-products. Likewise, aging may increase arterial stiffening by altering the proportions of elastin and collagen in the aorta. The consequences of arterial stiffening are increased pulse pressure, hypertension, and a greater risk of cardiovascular disease. Treatment strategies to reduce or prevent arterial stiffening include pharmacologic agents that block the renin-angiotensin-aldosterone system, relax vascular smooth muscle, enhance release of nitric oxide from endothelial cells, and break glycosylation end-product cross-links, and fish oil supplementation.
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PMID:Diabetes and arterial stiffening. 1707 13

The current pandemic of diabetes mellitus will inevitably be followed by an epidemic of chronic kidney disease. It is anticipated that 25-40% of patients with type 1 diabetes and 5-40% of patients with type 2 diabetes will ultimately develop diabetic kidney disease. The control of blood pressure represents a key component for the prevention and management of diabetic nephropathy. There is a strong epidemiological connection between hypertension in diabetes and adverse outcomes in diabetes. Hypertension is closely linked to insulin resistance as part of the 'metabolic syndrome'. Diabetic nephropathy may lead to hypertension through direct actions on renal sodium handling, vascular compliance and vasomotor function. Recent clinical trials also support the utility of blood pressure reduction in the prevention of diabetic kidney disease. In patients with normoalbuminuria, transition to microalbuminuria can be prevented by blood pressure reduction. This action appears to be significant regardless of whether patients have elevated blood pressure or not. The efficacy of ACE inhibition appears to be greater than that achieved by other agents with a similar degree of blood pressure reduction; although large observational studies suggest the risk of microalbuminuria may be reduced by blood pressure reduction, regardless of modality. In patients with established microalbuminuria, ACE inhibitors and angiotensin receptor antagonists (angiotensin receptor blockers [ARBs]) consistently reduce the risk of progression from microalbuminuria to macroalbuminuria, over and above their antihypertensive actions. The clinical utility of combining these strategies remains to be established. In patients with overt nephropathy, blood pressure reduction is associated with reduced urinary albumin excretion and, subsequently, a reduced risk of renal impairment or end stage renal disease. In addition to actions on systemic blood pressure, it is now clear that ACE inhibitors and ARBs also reduce proteinuria in patients with diabetes. This anti-proteinuric activity is distinct from other antihypertensive agents and diuretics. Although there is a clear physiological rationale for blockade of the renin angiotensin system, which is strongly supported by clinical studies, to achieve the optimal lowering of blood pressure, particularly in the setting of established diabetic renal disease, a number of different antihypertensive agents will always be needed. In the end, the choice of agents should be individualised to achieve the maximal tolerated reduction in blood pressure and albuminuria. Ultimately, no matter how it is achieved, so long as it is achieved, renal risk can be reduced by agents that lower blood pressure and albuminuria.
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PMID:Blood pressure lowering for the prevention and treatment of diabetic kidney disease. 1713 4

The Japanese Brazilian population has one of the highest prevalences of diabetes worldwide. Despite being non-obese according to standard definitions, their body fat distribution is typically central. We investigated whether a subset of these subjects had autoantibodies that would suggest a slowly progressive form of type 1 diabetes. A total of 721 Japanese Brazilians (386 men) in the 30- to 60-year age group underwent clinical examination and laboratory procedures, including a 75-g oral glucose tolerance test and determinations of serum autoantibodies. Antibodies to glutamic acid decarboxylase (GADab) were determined by radioimmunoassay and to thyroglobulin (TGab) and thyroperoxidase (TPOab) by flow-cytometry assays. Mean body mass index was 25.2 +/- 3.8 kg/m2, but waist circumference was elevated according to the Asian standards. Diabetes, impaired glucose tolerance, and impaired fasting glycemia were found in 31%, 22%, and 22%, respectively, and 53% of the subjects had metabolic syndrome. Glutamic acid decarboxylase (GADab) was positive in 4.72%, TGab in 9.6%, and TPOab in 10% of the whole sample. When participants were stratified according to the presence of thyroid antibodies, similar frequencies of GADab were found in positive and negative groups. The prevalence rates of glucose metabolism disturbances did not differ between GADab positive and negative groups. Our data did not support the view that autoimmune injury could contribute to the high prevalence of diabetes seen in Japanese Brazilians, and the presence of co-morbidities included in the spectrum of metabolic syndrome favors the classification as type 2 diabetes.
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PMID:Autoimmunity does not contribute to the highly prevalent glucose metabolism disturbances in a Japanese Brazilian population. 1727 84


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