复旦大学:《内科学》课程教学资源(PPT课件讲稿)胡仁明-糖尿病

Diabetes mellitus Renming hu m.d. phD Department of Endocrinology Huashan Hospital Institute of Endocrinology and Diabetes at Fudan University
Diabetes Mellitus Renming Hu M.D,PhD Department of Endocrinology Huashan Hospital Institute of Endocrinology and Diabetes at Fudan University

Classification of diabetes(ADA-1997) pe (beta-cell destruction, usually leading to absolute insulin deficiency Autoimmune Idiopathic Type 2 (may range from predominantly insulin resistance with relative insulin deficiency to a predominantly secretory defect with or without insulin resistance ● Other specific types Gestational diabetes **
Classification of diabetes(ADA-1997) Type 1 ⚫ (beta-cell destruction, usually leading to absolute insulin deficiency) • Autoimmune • Idiopathic ⚫ Type 2 – (may range from predominantly insulin resistance with relative insulin deficiency to a predominantly secretory defect with or without insulin resistance) ⚫ Other specific types ⚫ Gestational diabetes**

Other specific types o Genetic defects of beta-cell function o Genetic defects in insulin action o Diseases of the exocrine pancreas ● Endocrinopathies Drug-or chemical-induced ● Infections o Uncommon forms of immune -mediated diabetes o Other genetic syndromes sometimes associated with diabetes
Other specific types ⚫ Genetic defects of beta-cell function ⚫ Genetic defects in insulin action ⚫ Diseases of the exocrine pancreas ⚫ Endocrinopathies ⚫ Drug- or chemical-induced ⚫ Infections ⚫ Uncommon forms of immune-mediated diabetes ⚫ Other genetic syndromes sometimes associated with diabetes

Pathogenesis
Pathogenesis

Pathology e Type 1 DM: inflammation of pancreas Type 2 DM: amyloidosis of pancreas 90 rge vessel atherosclerosis e Kidney: diffuse or nodular glomerular 60 sclerosis Retina: arteriolar sclerosis 口 north microaneurysm、 exudates、 new vessel season season season season formation 3 Nerve: axon degeneration myelinolysis
Pathology ⚫ Type 1 DM:inflammation of pancreas ⚫ Type 2 DM:amyloidosis of pancreas ⚫ Large vessel :atherosclerosis ⚫ Kidney :diffuse or nodular glomerular sclerosis ⚫ Retina:arteriolar sclerosis、 microaneurysm、exudates、new vessel formation ⚫ Nerve:axon degeneration 、 myelinolysis 0 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 season 1 season 2 season 3 season 4 east west north

Pathophysiology
Pathophysiology

Abnormalities in metabolism ● Carbohydrate: anabolism, catabolism↑ utilization Lipid anabolism, catabolism ketoplasia ● protein: anabolism, catabolism↑, glyconeogenesis
Abnormalities in metabolism ⚫ Carbohydrate :anabolism ,catabolism、 utilization ⚫ Lipid : anabolism ,catabolism , ketoplasia ⚫ protein: anabolism ,catabolism , glyconeogenesis

Insulin secretion curve normal and diabetics 1600 1400 Htype2 1200 1000 800 obese 600 →·type1 400 200 30 90 120 C⊥oc k 1me (hours
Insulin secretion curve :normal and diabetics 0 200 400 600 800 1000 1200 1400 1600 0 3 0 6 0 9 0 120 clock time(hours) insulin(μU/ml) type2 normal obese type 1

Clinical Presentation
Clinical Presentation

Natural history of type 2 DM After the diagnosis of type 2 diabetes IR constantly exists Insulin secretion ability gradually declines When fpg reachs the diagnostic criteria, insulin secretion ability has already declined by 50%0 When FPG≌7.0mmo/L,β cellinsulin secretion ability When fpg≥10~1mmo/L,β- Insulin secretion ability has already neared absolute deficiency
Natural history of type 2 DM After the diagnosis of type 2 diabetes: IR constantly exists Insulin secretion ability gradually declines: When FPG reachs the diagnostic criteria,insulin secretion ability has already declined by 50% When FPG≥7.0mmol/L,-cell insulin secretion ability When FPG≥1011.0mmol/L,-C insulin secretion ability has already neared absolute deficiency
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