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CSI clinical practice guidelines for dyslipidemia management: Executive summary

Dyslipidemias are the most important coronary artery disease (CAD) risk factor. Proper management of dyslipidemia is crucial to control the epidemic of premature CAD in India. Cardiological Society of India strived to develop consensus-based guidelines for better lipid management for CAD prevention and treatment. The executive summary provides a bird's eye-view of the ‘CSI: Clinical Practice Guidelines for Dyslipidemia Management’ published in this issue of the Indian Heart Journal. The summary is focused on the busy clinician and encourages evidence-based management of patients and high-risk individuals. The summary has serialized various aspects of lipid management including epidemiology and categorization of CAD risk. The focus is on management of specific dyslipidemias relevant to India-raised low density lipoprotein (LDL) cholesterol, non-high density lipoprotein cholesterol (non-HDL-C), apolipoproteins, triglycerides and lipoprotein(a). Drug therapies for lipid lowering (statins, non-statin drugs and other pharmaceutical agents) and lifestyle management (dietary interventions, physical activity and yoga) are summarized. Management of dyslipidemias in oft-neglected patient phenotypes-the elderly, young and children, and patients with comorbidities-stroke, peripheral arterial disease, kidney failure, posttransplant, HIV (Human immunodeficiency virus), Covid-19 and familial hypercholesterolemia is also presented. This consensus statement is based on major international guidelines (mainly European) and expert opinion of lipid management leaders from India with focus on the dictum: earlier the better, lower the better, longer the better and together the better. These consensus guidelines cannot replace the individual clinician judgement who remains the sole arbiter in management of the patient.

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Dyslipidemia in diabetes

Diabetes mellitus is a metabolic disorder that often predisposes to cardiovascular diseases (CVD). CVD is an important cause of morbidity and mortality in diabetes. The typical diabetic dyslipidaemia is characterized by low HDL cholesterol, high triglycerides with mildly increased or even normal LDL. This attenuated rise in LDL is due to the more atherogenic small dense LDL particles. Genetic factors, obesity, lack of physical activity, alcohol abuse, poorly controlled glucose levels are some of the common risk factors for dyslipidaemia. Non-pharmacological management of dyslipidaemia is important and includes modification in the diet, increase in physical activity and efforts to reduce weight. Statins remain the mainstay of pharmacotherapy for dyslipidaemia in diabetes. Due to the small dense LDL, even patients with diabetes who have normal LDL cholesterol, achieve reduction in cardiovascular risk with statin therapy. Those patients who do not achieve acceptable LDL reductions with statin alone can be treated with combination therapy of ezetimibe with statins. Many novel therapies have also emerged such as bempedoic acid and proprotein convertase subtilisin/kexin 9 (PCSK9) inhibitors. The targets for LDL cholesterol depend upon the patients underlying cardiovascular risk category. The use of pharmacotherapy for lowering triglycerides in patients with mild to moderate hypertriglyceridemia and diabetes is still a matter of debate. Proper management of dyslipidaemia is critical component of treatment of diabetes mellitus.

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'Oxidative stress'-A new target in the management of diabetes mellitus.

Diabetes mellitus (DM) is a chronic condition that poses a mammoth challenge for the healthcare system in developing as well as developed nations. Diabetes mellitus is associated with damage to the vasculature which leads to microvascular and macrovascular complications. Oxidative stress is a consequence of glucotoxicity and lipotoxicity, which are associated with diabetes. Glucotoxicity and lipotoxicity play a part in the pathogenesis of β-cell dysfunction. The hyperglycemic state in DM leads to oxidative stress which further hampers insulin secretion. In diabetes, the biological antioxidants also get depleted along with a reduction in glutathione (GSH), an increase in the oxidized glutathione (GSSG)/GSH ratio, and a depletion of non-enzymatic antioxidants. This results in the formation of a viscous circle of hyperglycemia leading to increased oxidative stress that further hampers insulin secretion which in turn results in hyperglycemia. Antioxidants are efficacious in reducing diabetic complications. The antioxidants produced biologically fall short, hence external supplements are required. In this review, the authors have discussed the relationship between oxidative stress in DM and the advantages of antioxidant supplements in controlling blood glucose levels and also in deaccelerating the complications related to DM.

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