What is Cholesterol?Cholesterol is a sterol (a combination steroid and alcohol). Cholesterol is a lipid found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. Because cholesterol is synthesized by all eukaryotes, trace amounts of cholesterol are also found in membranes of plants and fungi.The name originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as researchers first identified cholesterol in solid form in gallstones by Francois Poulletier de la Salle in 1769. However, it is only in 1815 that chemist Eugene Chevreul named the compound "cholesterine".[2]Most of the cholesterol is synthesized by the body and some has dietary origin. Cholesterol is more abundant in tissues which either synthesize more or have more abundant densely-packed membranes, for example, the liver, spinal cord and brain. It plays a central role in many biochemical processes, such as the composition of cell membranes and the synthesis of steroid hormones. Cholesterol is insoluble in blood, but is transported in the circulatory system bound to one of the varieties of lipoprotein, spherical particles which have an exterior composed mainly of water-soluble proteins. The main types, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) carry cholesterol from and to the liver.According to the lipid hypothesis, abnormally high cholesterol levels (hypercholesterolemia) and abnormal proportions of LDL and HDL are associated with cardiovascular disease by promoting atheroma development in arteries (atherosclerosis). This disease process leads to myocardial infarction (heart attack), stroke and peripheral vascular disease. As high LDL contributes to this process, it is termed "bad cholesterol", while high levels of HDL ("good cholesterol") offer a degree of protection. The balance can be redressed with exercise, a healthy diet, and sometimes medication. |
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Beta blockers - MayoClinic.com Beta blockers, also called beta-adrenergic blocking agents, treat a variety of conditions, such as high blood pressure, glaucoma and migraines. Beta-blockers no longer best for blood pressure, say experts Up to 2 million people with high blood pressure should switch from beta-blockers to a more modern drug, the government's watchdog on new medicines advises BBC NEWS | Health | More doubt on blood pressure drug A Swedish team analysed data on more than 105000 people and found beta blockers were not as effective as other drugs in reducing high blood pressure. Beta-blockers For High Blood Pressure - Ongoing Debate In this meta-analysis, Khan and McAlister question the findings of a recently published meta-analysis by Lindholm and colleagues, which reported an Types of Blood Pressure Medications: Guide to Lowering HBP High Blood Pressure Topics:. ACE Inhibitors, African Americans, Alcohol, Alpha-Beta Beta-blockers reduce nerve impulses to the heart and blood vessels. FDA Approves New Beta Blocker to Treat High Blood Pressure The US Food and Drug Administration has approved Bystolic (nebivolol) for the treatment of high blood pressure. Bystolic is a beta blocker, Beta-blockers for high blood pressure - Medication Example(s): Sectral (acebutolol), Tenormin (atenolol), (carvedilol), Trandate (labetalol), Lopresor (metoprolol), (nadolol), Visken (pindolol), Taking Medication for High Blood Pressure Find out about high blood pressure medications. Other medications called beta-blockers reduce the heart rate and the heart's output of blood. High Blood Pressure - hypertension, symptoms, causes, beta If necessary, high blood pressure can be treated with a range of different medicines, including:. Beta-blockers, which make the heart beat more slowly and Medicines high blood pressure treatment tablets,drugs pills In June 2006 the guidelines on medicines for high blood pressure changed . Beta-blockers. Acebutolol, Atenolol, Bisoprolol, Metoprolol, Beta-blockers for high blood pressure Drug details for Beta-blockers for high blood pressure. |
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