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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Journal of Hypertension - Abstract: Volume 21(11) November 2003 p A comparison of awake-sleep blood pressure variation between normotensive Objective: To compare awake-sleep ambulatory blood pressure variation between Why Studying Blood Pressure is a Challenge Because so many intermediate systems and traits contribute to blood pressure determination, variation in a large number of genes can potentially influence Blood Pressure Variations are Explained » Propeller Blood Pressure Variations are Explained. Health & Fitness â“ One of the most frustrating things about checking your blood pressure is that it can vary Day-night blood pressure variation in normotensive OBJECTIVE--To examine day-night blood pressure (BP) variation in normotensive, normoalbuminuric subjects with type I diabetes and to assess the prevalence Blood pressure measurement The information is recorded on a chip in the device and allows the doctor to get a detailed picture of blood pressure variation in a normal environment. Diurnal Blood Pressure Variation in Progressive Autonomic Failure Abstractâ”To investigate the role of the autonomic nervous system (ANS) in the generation of the circadian blood pressure (BP) variation, the degree of Sao Paulo Medical Journal - Seasonal variation of blood pressure Seasonal blood pressure variation is observed in all age groups7,8 and, at least for patients with hypertension, this variation is higher in older than in DOES CARDIAC RHYTHM ALONE DETERMINE HUMAN BLOOD PRESSURE Changes in cardiac rhythm are not the only determinants of blood pressure variations in man. They play a part in the variations of systolic and diastolic American Journal of Hypertension - Impaired Diurnal Blood Pressure Table 3 - Impaired diurnal blood pressure variation as a predictor of death. Diurnal variation of blood pressure in elderly patients with essential Determinants of Circadian Blood Pressure Variation: A Community We investigated facters affecting the nocturnal decline in blood pressure (BP). A cross sectional study was done in 706 community-based untreated subjects Blood pressure - Wikipedia, the free encyclopedia Arterial blood pressure (BP) is most accurately measured invasively. reserved for patients where rapid variations in arterial pressure are anticipated. Blood Pressure variations - Heart Disease - MedHelp Blood Pressure variations. This forum is for questions and support regarding heart issues such as: Angina, Angioplasty, Arrhythmia, Bypass Surgery, Normal diurnal variation in pressure with a nocturnal dip 24 hour ambulatory blood pressure profile showing a nocturnal dip in a In most individuals blood pressure falls by 10 - 20% during the night. SPC Guide Over the next several years, I monitored my blood pressure as I experimented with ways to bring it down. In Figure 1, The R chart indicates the variation Wide Blood Pressure Variation Between Arms A patient with left carotid endarterectomy presented an unrelated complaint of posterior neck pain. Seasonal Variations in Blood Pressure It is important to take seasonal variations in blood pressure into account will increase the meaningful information collected in population surveys and mass Systolic blood pressure variation is a sensitive indicator of Systolic pressure variation (SPV) is defined as the difference between the maximum and minimum values of systolic blood pressure following a single positive Blood pressure variation in blacks: genetic factors. Blood pressure variation in blacks: genetic factors. Grim CE, Robinson M. Department of Cardiovascular Medicine, Medical College of Wisconsin, Milwaukee, ScienceDirect - American Journal of Hypertension : White coat The purpose of this study was to investigate the white coat effect (WCE) and blood pressure (BP) variations in centenarians (age, 100 years or above) in |
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