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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Blood pressure - Wikipedia, the free encyclopedia Arterial blood pressure (BP) is most accurately measured invasively. Vascular pressure parameters are derived in the monitor's microcomputer system. Blood pressure parameters and cardiovascular risk in the elderly It is now recognized that, in elderly hypertensive patients, systolic blood pressure is a better predictor of morbid and lethal events related to IngentaConnect Parasite Pressure and its Effects on Blood Parasite Pressure and its Effects on Blood Parameters in a Stable and Dense Population of the Endangered Lesser Grey Shrike. Authors: Valera, Francisco1; Probe for use in non-invasive measurements of blood related Probe for use in non-invasive measurements of blood related parameters - US Patent pressure to the finger in the vicinity of said measurement location, Pulmonary hemodynamics and blood parameters in rats exposed to Pressure in Pulmonary Artery, Red. Blood Parameters, and Body Weight of Rats af-. ter Different Periods of Sojourn in the Moun-. tains (M βΆ m). Parameter Invasive blood parameter probe to be introduced into a catheter An invasive blood parameter probe includes a flexible pressure tube which surrounds the sterile probe portion. When the pressure tube is stretched, (WO/2006/041789) APPARATUSES AND METHODS FOR NON-INVASIVELY The apparatus of claim 9, wherein the blood pressure parameter includes one of diastolic blood pressure, systolic blood pressure and mean arterial blood Journal of Human Hypertension - Abstract of article: Relationship Relationship between blood pressure parameters and pulse wave velocity in normotensive and hypertensive subjects: invasive study Continuous Measurement of Systolic Blood Pressure Using the PTT Since blood pressure (BP) provides much. information about heartbeat parameters, the. elasticity of blood pressure, and the physiological Effect of Barnidipine on Blood Pressure and Serum Metabolic Effect of Barnidipine on Blood Pressure and Serum Metabolic Parameters in Patients With Essential Hypertension: A Pilot Study. Athanasia Spirou, MD American Journal of Hypertension : Blood Pressure Parameters and Multivariable-adjusted relative risk (RR) for fatal stroke associated with a 10 mm Hg increment in blood pressure parameters by gender and ethnicity. |
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