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 Donation low blood pressure, or high blood pressure, you may not donate blood. Donated blood can also be broken down into blood components, which include red Blood pressure components and cardiovascular events in older Blood pressure components and cardiovascular events in older adults: the Rotterdam Study. FUS Mattace-Raso, TJM Cammen, NM Popele, DAM Kuip, MADH Schalekamp Differential acquisition of specific components of a classically Differential acquisition of specific components of a classically conditioned arterial blood pressure response in rat. Yasser M. El-Wazir,1 Sheng-Gang Li,2 Components of the Circulatory System The properties of arterioles and they unique role they play in the regulation of blood pressure are discussed in the third part of Components of The The Journal of Pediatrics : Waist circumference, blood pressure To examine whether waist circumference (WC) predicts blood pressure (BP) and lipid components of the metabolic syndrome independent of body mass index (BMI) Components of Variability in the Systolic Blood Pressures of In this study, the authors used a components-of-variance approach that did not require this assumption in order to model serial blood pressure measurements Longitudinal variance components models for systolic blood Longitudinal variance components models for systolic blood pressure, fitted using Gibbs sampling. Katrina J Scurrah,1 Martin D Tobin,1 and Paul R Burton IngentaConnect Blood Pressure Components and Cardiovascular Events Blood Pressure Components and Cardiovascular Events in Older Adults: The Rotterdam Study. Authors: Mattace-Raso, Francesco U. S.; van der Cammen, King's ePrints - Variance components linkage analysis for adjusted Cathryn M and Whittaker, John C (2003) Variance components linkage analysis for adjusted systolic blood pressure in the Framingham Heart Study. Disposable Blood Pressure Transducer Components Utah Medical Products, Inc. Deltran^ Custom Blood Pressure Monitoring Kits and Components. Journal of Human Hypertension - Pulsatile and steady 24-h blood Pulsatile and steady 24-h blood pressure components as determinants of left ventricular mass in young and middle-aged essential hypertensives Components of blood pressure and risk of atherothrombotic brain Components of blood pressure and risk of atherothrombotic brain infarction: the Framingham study. WB Kannel, TR Dawber, P Sorlie and PA Wolf Cardiovascular Risk Factors and Hypertension There appears to be lingering uncertainty about the CVD impact of the various components of blood pressure. Medical concepts about the hazards of BioMed Central | Full text | Multivariate variance-components We apply multivariate variance components to longitudinal systolic blood pressure data from the Framingham Heart Study. We find evidence for a polygenic Emory scientist honored for identifying key components of blood Emory scientist honored for identifying key components of blood pressure control. American Heart Association award. ORLANDO, Nov. CAT.INIST Relations of pulse pressure and other components of blood pressure to preclinical Objective To evaluate the extent to which pulse pressure (PP) is Low and High Frequency Components of Blood Pressure Variability Briefly, at rest, two major oscillatory components are consistently observed in. both heart period and systolic blood pressure variabilities. Systolic Blood Pressure, Diastolic Blood Pressure, and Pulse Background: The relative importance of blood pressure components (systolic blood Objective: To evaluate the joint effect of blood pressure components on |
| components of blood pressure |
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