Pathophysiology of Diabetes Mellitus (Harrison’s Principles of Internal Medic...Batoul Ghosn
This presentation talks about the Pathophysiology part of Diabetes Mellitus I & II as well as Diabetic Ketoacidosis & Hyperglycemic Hyperosmolar State and Finally with Medical Nutrition Therapy in DIabetes Mellitus. It is made entirely from the Harrsion's Book 19th edition.
Diabetes mellitus (DM) is a common, chronic, metabolic syndrome characterized by hyperglycemia as a cardinal biochemical feature. The major forms of diabetes are classified according to those caused by deficiency of insulin secretion due to pancreatic β-cell damage (type 1 DM, or T1DM) and those that are a consequence of insulin resistance occurring at the level of skeletal muscle, liver, and adipose tissue, with various degrees of β-cell impairment (type 2 DM, or T2DM). T1DM is the most common endocrine-metabolic disorder of childhood and adolescence, with important consequences for physical and emotional development. Individuals with T1DM confront serious lifestyle alterations that include an absolute daily requirement for exogenous insulin, the need to monitor their own glucose level, and the need to pay attention to dietary intake. Morbidity and mortality stem from acute metabolic derangements and from long-term complications (usually in adulthood) that affect small and large vessels resulting in retinopathy, nephropathy, neuropathy, ischemic heart disease, and arterial obstruction with gangrene of the extremities. The acute clinical manifestations are due to hypoinsulinemic hyperglycemic ketoacidosis. Autoimmune mechanisms are factors in the genesis of T1DM; the long-term complications are related to metabolic disturbances (hyperglycemia).
Type 1 Diabetes Mellitus
Formerly called insulin-dependent diabetes mellitus (IDDM) or juvenile diabetes, T1DM is characterized by low or absent levels of endogenously produced insulin and dependence on exogenous insulin to prevent development of ketoacidosis, an acute life-threatening complication of T1DM. The natural history includes 4 distinct stages: (1) preclinical β-cell autoimmunity with progressive defect of insulin secretion, (2) onset of clinical diabetes, (3) transient remission “honeymoon period,” and (4) established diabetes associated with acute and chronic complications and decreased life expectancy. The onset occurs predominantly in childhood, with median age of 7-15 yr, but it may present at any age. The incidence of T1DM has steadily increased in many parts of the world, including Europe and the USA. T1DM is characterized by autoimmune destruction of pancreatic islet β cells. Both genetic susceptibility and environmental factors contribute to the pathogenesis. Susceptibility to T1DM is genetically controlled by alleles of the major histocompatibility complex (MHC) class II genes expressing human leukocyte antigens (HLAs). It is also associated with autoantibodies to islet cell cytoplasm (ICA), insulin (IAA), antibodies to glutamic acid decarboxylase (GADA or GAD65), and ICA512 (IA2). T1DM is associated with other autoimmune diseases such as thyroiditis, celiac disease, multiple sclerosis, and Addison disease. There is some suggestion that high dietary intake of omega-3 polyunsaturated fatty acids and vitamin D supplementation in early childhood decreases the incidence of autoi
Diabetes and various types have been discussed in detail as regard for Pg entrance and with various images, tables .....
Topics discussed: 1) introduction
2) types of diabetes
3) comp0lication of diabetes
4) DKA
5) NKHOC
6) Diabetic nephropathy
7) skin diseases in diabetes
Pathophysiology of Diabetes Mellitus (Harrison’s Principles of Internal Medic...Batoul Ghosn
This presentation talks about the Pathophysiology part of Diabetes Mellitus I & II as well as Diabetic Ketoacidosis & Hyperglycemic Hyperosmolar State and Finally with Medical Nutrition Therapy in DIabetes Mellitus. It is made entirely from the Harrsion's Book 19th edition.
Diabetes mellitus (DM) is a common, chronic, metabolic syndrome characterized by hyperglycemia as a cardinal biochemical feature. The major forms of diabetes are classified according to those caused by deficiency of insulin secretion due to pancreatic β-cell damage (type 1 DM, or T1DM) and those that are a consequence of insulin resistance occurring at the level of skeletal muscle, liver, and adipose tissue, with various degrees of β-cell impairment (type 2 DM, or T2DM). T1DM is the most common endocrine-metabolic disorder of childhood and adolescence, with important consequences for physical and emotional development. Individuals with T1DM confront serious lifestyle alterations that include an absolute daily requirement for exogenous insulin, the need to monitor their own glucose level, and the need to pay attention to dietary intake. Morbidity and mortality stem from acute metabolic derangements and from long-term complications (usually in adulthood) that affect small and large vessels resulting in retinopathy, nephropathy, neuropathy, ischemic heart disease, and arterial obstruction with gangrene of the extremities. The acute clinical manifestations are due to hypoinsulinemic hyperglycemic ketoacidosis. Autoimmune mechanisms are factors in the genesis of T1DM; the long-term complications are related to metabolic disturbances (hyperglycemia).
Type 1 Diabetes Mellitus
Formerly called insulin-dependent diabetes mellitus (IDDM) or juvenile diabetes, T1DM is characterized by low or absent levels of endogenously produced insulin and dependence on exogenous insulin to prevent development of ketoacidosis, an acute life-threatening complication of T1DM. The natural history includes 4 distinct stages: (1) preclinical β-cell autoimmunity with progressive defect of insulin secretion, (2) onset of clinical diabetes, (3) transient remission “honeymoon period,” and (4) established diabetes associated with acute and chronic complications and decreased life expectancy. The onset occurs predominantly in childhood, with median age of 7-15 yr, but it may present at any age. The incidence of T1DM has steadily increased in many parts of the world, including Europe and the USA. T1DM is characterized by autoimmune destruction of pancreatic islet β cells. Both genetic susceptibility and environmental factors contribute to the pathogenesis. Susceptibility to T1DM is genetically controlled by alleles of the major histocompatibility complex (MHC) class II genes expressing human leukocyte antigens (HLAs). It is also associated with autoantibodies to islet cell cytoplasm (ICA), insulin (IAA), antibodies to glutamic acid decarboxylase (GADA or GAD65), and ICA512 (IA2). T1DM is associated with other autoimmune diseases such as thyroiditis, celiac disease, multiple sclerosis, and Addison disease. There is some suggestion that high dietary intake of omega-3 polyunsaturated fatty acids and vitamin D supplementation in early childhood decreases the incidence of autoi
Diabetes and various types have been discussed in detail as regard for Pg entrance and with various images, tables .....
Topics discussed: 1) introduction
2) types of diabetes
3) comp0lication of diabetes
4) DKA
5) NKHOC
6) Diabetic nephropathy
7) skin diseases in diabetes