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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Arthritis Research & Therapy | Full text | Biology and therapy of National Institute of Cardiology, Juan Badiano 1, 14080 Mexico City, Mexico . Sustained drops in systolic blood pressure (>20 mmHg) or diastolic blood Kidney International - Abstract of article: Determinants of renal 1, Sección XVI, 14080-México, D.F.. Top of page . Heilo A, Brodwall EK, Flatmark A: Long-term blood pressure and renal function in kidney donors. CAT.INIST Sección XVI, Deleg, Tlalpan, Distrito Federal, CP 14080, MEXIQUE Avocado oil ; Blood pressure ; Membrane fatty acid composition ; Arachidonic acid JCR: Journal of Clinical Rheumatology - Fulltext: Volume 12(6 Patients with FM often describe pain elicitation during blood pressure The blood pressure cuff was inflated at an approximate rate of 10 mm Hg per F. Path of Blood Through the Heart OH-Path of Blood Through The Heart Artificial 14079-14080. Cardiac Cycle Animation 16248 Play Blood pressure falls to the diastolic level as blood flows out of the aorta. NEJM -- Salt-Sensitive Hypertension The mechanism of the increase in blood pressure in response to sodium retention is important Mexico City 14080, Mexico. George F. Schreiner, M.D. Comparative study of cerebral blood flow between postural Chavezâ™, Juan Badiano #1, Sección XVI, Tlalpan CP 14080, . Table I Baseline recordings of blood pressure and blood flow parameters in 50 Journal of Ethnopharmacology : Effect of an avocado oil-rich diet Tlalpan, Distrito Federal, C.P. 14080, México Received 1 November 2003; . Basal systolic blood pressure for control and avocado oil-rich diet rats was: Reduction of renal immune cell infiltration results in blood Reduction of renal immune cell infiltration results in blood pressure control in Tlalpan 14080, Mexico; and 3 Renal Division, Baylor Medical College, Reduction of renal immune cell infiltration results in blood Tlalpan 14080, Mexico; and 3 Renal Division, Baylor Medical College, Losartan-hydrochlorothiazide association promotes lasting blood pressure |
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