How do Antihyperlipidemic drugs lower blood cholesterol?
Statins lower LDL levels by inhibiting HMG-CoA reductase activity leading to decreases in hepatic cholesterol content resulting in an up-regulation of hepatic LDL receptors, which increases the clearance of LDL. The major side effects are muscle complications and an increased risk of diabetes.
Which of the hypolipidemic drugs is most effective in raising HDL cholesterol level and lower serum triglycerides?
Niacin (Nicotinic Acid) Niacin is the oldest lipid-lowering agent that has been proved to decrease cardiovascular morbidity and total mortality. 25,26 It reduces serum triglyceride, total cholesterol and LDL cholesterol values (Table 3). It also has the beneficial effect of raising HDL levels.
Which among them is lipid-lowering agent?
Statins are one of the better known types of cholesterol-lowering drugs. Statins decrease cholesterol output by blocking the HMG CoA reductase enzyme that the liver uses to make cholesterol. Statins are also called HMG CoA reductase inhibitors.
How statins work as antihyperlipidemic drugs?
All statins drugs exert their effect by inhibiting the enzyme class I 3-hydroxy-3-methyl-glutaryl-CoenzymeA reductase (HMG-CoA) leading to decreased synthesis of cholesterol and increased removal of low-density lipoprotein (LDL) circulating in the body2,3.
How do antihyperlipidemic drugs work?
Antihyperlipidemic agents promote reduction of lipid levels in the blood. Some antihyperlipidemic agents aim to lower the levels of low-density lipoprotein (LDL) cholesterol, some reduce triglyceride levels, and some help raise the high-density lipoprotein (HDL) cholesterol.
How is somatostatin synthesized?
Somatostatin is synthesized in the hypothalamus and is transported via the portal vessels in the pituitary stalk to the GH- and TSH-secreting cells and can be considered here to be a “neurohormone.” A considerable number of somatostatin-producing cells have been identified and located in the mucosa of the gut and in …
What does somatostatin do in the pancreas?
In the pancreas, somatostatin inhibits the secretion of pancreatic hormones, including glucagon and insulin. Finally, in the gastrointestinal tract, the hormone reduces gastric secretion and the emission of gastrointestinal hormones, such as secretin and gastrin.
What does a hypolipidemic drug treat?
Hypolipidemic agents, cholesterol-lowering drugs or antihyperlipidemic agents, are a diverse group of pharmaceuticals that are used in the treatment of high levels of fats (lipids), such as cholesterol, in the blood (hyperlipidemia).
What does a hypolipidemic drug do?
hypolipidemic drug, also called lipid-lowering drug, any agent the reduces the level of lipids and lipoproteins (lipid-protein complexes) in the blood. Lipoproteins bind cholesterol and can accumulate in blood vessels.
How do statins lower cholesterol?
Statins work by slowing down the production of LDL-cholesterol in the liver, where it’s made. Because the liver isn’t making so much cholesterol, it then takes cholesterol out of your blood to make bile with, so your blood cholesterol levels fall.
What drugs can lower cholesterol?
Statins include:
- Atorvastatin (Lipitor)
- Fluvastatin (Lescol)
- Lovastatin.
- Pitavastatin (Livalo)
- Pravastatin (Pravachol)
- Rosuvastatin calcium (Crestor)
- Simvastatin (Zocor)
What are somatostatin receptors and how do they work?
Somatostatin binds to 5 subtypes of somatostatin receptors (SSTRs), which are all Gi-protein-coupled transmembrane receptors that inhibits adenylyl cyclase upon activation 1. By inhibiting intracellular cyclic AMP and Ca2+ and by a receptor-linked distal effect on exocytosis, SSTRs block cell secretion 3.
What is somatostatin (GHR)?
Somatostatin, also known as growth hormone-inhibiting hormone, is a naturally-occurring peptide hormone of 14 or 28 amino acid residues 9 that regulates the endocrine system.
What is the difference between somatostatin and pasireotide?
Pasireotide is a synthetic polypeptide analogue of somatostatin that resembles the native hormone in its ability to suppress levels and activity of growth hormone, insulin, glucagon and many other gastrointestinal peptides.
What is recrecombinant somatostatin?
Recombinant Somatostatin is a recombinant peptide chemically identical or similar to endogenous somatostatin. Somatostatin is a cyclic tetradecapeptide regulating many endocrine and nervous system functions.
