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By: Dr. Hala M. Al-Khalidi Faculty of Pharmacy King Abdulaziz University 2008 - 1429
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New diagnostic criteria and a new classification system, treatment for diabetes mellitus Now many new data available, more etiological information has appeared Updates many sources- Journals, WHO r eports ADA - American Diabetes Association ACE - American College of Endocrinology AACE - American Association of Clinical Endocrinology DCCT - Diabetes Control and Complications Trial (UK)
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Diabetes mellitus (DM) is a group of metabolic disorders Characterized by hyperglycemia Poor control due Insufficient insulin associated with abnormalities in CHO, fat, & protein metabolism Resulting in chronic complications; microvascular, macrovascular, and neuropathic disorders.
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Leading cause of blindness in adults age 20- 74 End-stage renal disease. 82,000 lower extremity amputations annually. Finally, a cardiovascular event is responsible for 75% of deaths in individuals with type 2 DM Interventions to prevent disease in high-risk populations have been reported for type 1 and type 2
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World wide epidemic of DM is alarming CDC centers predict that incidence of DM will rise by 37.5% in the USA, developing countries 170% over the next 30 years Type 2 DM is increasing in both adult & children New methods of control need to be developed by health care providers
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Cost ~ $132 billion 2002, indirect costs to disability and mortality DM lead cause of blindness, end-stage renal disease Annual ~82,000 lower extremity amputations Finally, a cardiovascular event in 75% of deaths with type-2 DM
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Hyperglycemia
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Multiple genetic defects GENETIC PREDISPOSITION Obesity ENVIRONMENT Deranged insulin secretion PRIMARY BETA-CELL DEFECT Inadequate glucose utilization PERIPHERAL TISSUE INSULIN RESISTANCE HYPERGLYCEMIA Beta-cell exhaustion TYPE 2 DIABETES Pathogenesis of Type 2 DM
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TYPE 1 DIABETESTYPE 2 DIABETES Autoimmune 10% Children & adolescents, or any age Rapid/complete β -cell destruction with ketoacidosis Insulin requiring for survival C-peptide deficient Obesity 90% β -cell dysfunction; may range from insulin resistance with relative insulin deficiency to a secretory defect with or without insulin resistance, or Genetic defects
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Individuals Having at Least Three Components meet the Criteria for Diagnosis; The National Cholesterol Education Program Adult Treatment Panel (NCEP-ATP) III Guidelines
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FH (i.e., parents or siblings) Obesity ( ≥20% over IBW, or [BMI] ≥25 kg/m2 Physical inactivity Race or ethnicity Hypertension (≥140/90 mm Hg in adults) HDL ≤35 mg/dl and/or a TG level ≥250 mg/dL Hx. Gestational diabetes mellitus/ delivery baby weighing >9pd’s Hx. vascular disease polycystic ovary disease. Age Common women > men
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Genetic defects in insulin action Type A insulin resistance Leprechaunism Rabson-Mendenhall syndrome Lipoatrophic diabetes Exocrine pancreas Fibrocalculous pancreatopathy Pancreatitis Trauma / pancreatectomy
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Neoplasia Cystic fibrosis Haemochromatosis Endocrinopathies Cushing's syndrome Acromegaly Phaeochromocytoma Glucagonoma Hyperthyroidism Somatostatinoma Infections Congenital rubella Cytomegalovirus Drug- or chemical- induced
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Nicotinic acid Glucocorticoids Thyroid hormone Alpha-adrenergic agonists Beta-adrenergic agonists Thiazides Dilantin Pentamidine Vacor Interferon-alpha therapy
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Gestational diabetes is CHO intolerance resulting in hyperglycaemia of variable severity with onset/ first recognition during pregnancy Definition applies irrespective of whether or not insulin is used for treatment or the condition persists after pregnancy
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Symptoms of diabetes - Polyuria - Polydipsia - Unexplained weight loss - & Casual Plasma glucose conc. ≥ 200mg/dl (11.1mmol/L) OR Fasting Plasma Glucose ≥ 126mg/dl (7.0mmol/L) OR 2-hr postload glucose ≥ 200mg/dl (11.1mmol/L) OGTT* (only in pregnancy) * WHO 75g anhydrous glucose in water 8hr fasting
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A metabolic state intermediate between normal glucose homeostasis and diabetes Not interchangeable and represent different abnormalities of glucose regulation DIABETES MELLITUS IMPAIRED GLUCOSE TOLERANCE IMPAIRED FASTING GLUCOSE NORMALTEST mg/dl ≥ 126> 110 but< 126< 110 FASTING PLASMA GLUC. ≥200>140 but< 200< 140 2HR AFTER GLUC. LOAD ≥200 with symptoms RANDOM
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Hypoglycemia (Insulin Shock). Diabetic ketoacidosis (DKA). Hyperglycemic hyperosmolar non-ketotic coma (HHNK). 14
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Microvasculare Diabetic Retinopathy. Diabetic Nephropathy.. Diabetic Neuropathy. Infection Macrovascular ischmia Periphry Diabetic gangrene Heart CAD Brain CVA or TIA’s 15
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Near-normal glycemia will reduce the risk for microvascular and macrovascular disease complications Ameliorate symptoms, to reduce mortality, and to improve quality of life. Current evidence targets aggressive control Avoid hypoglycemia and excess weight
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The pancrease in a non-diabetic ’ s secretes small amount Insulin (basal secretion). After meals a large amount of insulin is secreted (bouls secretion). The goal of insulin therapy is to mimic this pattern of 24-hr glycaemic coverage. Type-1 DM basal-bolus insulin therapy or pump therapy is successful. Basal-bolus therapy in Type-2 DM is increasing. Multiple oral agents, or oral agents with insulin to obtain goals.
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