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A full explanation of the biguanides' mechanism of action remains elusive. Their blood glucose-lowering action does not depend on functioning pancreatic B cells. Patients with type 2 diabetes have considerably less fasting hyperglycemia as well as lower postprandial hyperglycemia after biguanides; however, hypoglycemia during biguanide therapy is essentially unknown. These agents are therefore more appropriately termed "euglycemic" agents. Currently proposed mechanisms of action include (1) reduced hepatic and renal gluconeogenesis; (2) slowing of glucose absorption from the gastrointestinal tract, with increased glucose to lactate conversion by enterocytes; (3) direct stimulation of glycolysis in tissues, with increased glucose removal from blood; and (4) reduction of plasma glucagon levels.
Biguanides have been most often prescribed for patients whose hyperglycemia is due to ineffective insulin action, ie, insulin resistance syndrome. Because metformin is an insulin-sparing agent and does not increase weight or provoke hypoglycemia, it offers obvious advantages over insulin or sulfonylureas in treating hyperglycemia in such individuals

Thiazolidinediones (Tzds) act to decrease insulin resistance. Their primary action is the regulation of genes involved in glucose and lipid metabolism and adipocyte differentiation. Tzds are ligands of peroxisome proliferator-activated receptor-gamma (PPAR-g), part of the steroid and thyroid superfamily of nuclear receptors. These PPAR receptors are found in muscle, fat, and liver. PPAR-g receptors are complex and modulate the expression of the genes involved in lipid and glucose metabolism, insulin signal transduction, and adipocyte and other tissue differentiation. The available Tzds do not have identical clinical effects, and new drug development will focus on defining PPAR effects and designing ligands that have selective action¾much like the selective estrogen receptor modulators

In addition to targeting adipocytes, myocytes, and hepatocytes, Tzds also have significant effects on vascular endothelium, the immune system, the ovaries, and tumor cells. Some of these responses may be independent of the PPAR-g pathway.

In persons with diabetes, a major site of Tzd action is adipose tissue, where the drug promotes glucose uptake and utilization and modulates synthesis of lipid hormones or cytokines and other proteins involved in energy regulation. Tzds also regulate adipocyte apoptosis and differentiation. Numerous other effects have been documented in animal studies but applicability to human tissues has yet to be determined.

Two thiazolidinediones are currently available: pioglitazone and rosiglitazone

2007-11-25 05:53:41 · answer #1 · answered by ABHINAV P 2 · 0 0

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2016-05-17 19:22:34 · answer #2 · answered by ? 3 · 0 0

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2016-09-17 11:53:05 · answer #3 · answered by ? 3 · 0 0

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2016-05-17 06:34:10 · answer #4 · answered by ? 4 · 0 0

With the newer types of insulin these days, diabetic diets aren't necessarily as restrictive as they used to be. Read here https://tr.im/0M425
As with any medicine or diet change, you should discuss it with your doctor. Fruits, both fresh and dried, have a natural sugar in them that will raise blood sugar levels, so be careful about eating too much. Not sure about the nuts. Moderation is always the key. I've been diabetic for 18 years and just recently changed insulin types. I love it because it gives me more freedom in when and what I eat.

2016-05-03 12:37:39 · answer #5 · answered by cortney 3 · 0 0

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2017-02-24 05:35:24 · answer #6 · answered by ? 3 · 0 0

Metformin reduces insulin resistance.

2007-11-25 03:26:22 · answer #7 · answered by J.SWAMY I ఇ జ స్వామి 7 · 0 0

Safely Reverse Your Diabetes : http://DiabetesTreated.com/Assist

2015-08-18 21:53:02 · answer #8 · answered by Aaron 1 · 0 0

Answer --> http://DiabetesGoGo.com/?Ikdk

2016-03-23 08:36:51 · answer #9 · answered by ? 3 · 0 0

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