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 in Children with Obstructive Sleep Apnea -- MARCUS Update on the 1987 task force report on high blood pressure in children and 24-hour ambulatory blood pressure variability in obstructive sleep apnea apnea blood high pressure sleep Simple Tommorrow's Answers Internship Eductional Classes. High Blood Pressure Linked to Sleep Apnea Researchers at the Johns Hopkins School of Public Health confirmed a possible connection between sleep apnea and hypertension (high blood pressure) in both UAB Study Finds Link Between Sleep Apnea and High Blood Pressure ÁœWe found a direct relationship between the severity of sleep apnea and cardiovascular changes associated with high blood pressure.Á« What Is Sleep Apnea? Untreated sleep apnea can increase the chance of having high blood pressure and even a heart attack or stroke. Untreated sleep apnea can also increase the Sleep apnea, the phantom cause of heart disease and accidents They are discussed in Sleep apnea, snoring and the heart by Dr. Clive Layton, MD, Central apnea may cause high blood pressure, surges of adreniline, Sleep apnea can cause depression and high blood pressure Medical news summary describing Sleep apnea can cause depression and high blood pressure in relation to symptoms, diagnosis, misdiagnosis and treatment. Sleep Apnea - Respironics Sleep Systems · Patient Interfaces (Masks) · Sleep Accessories · Patient Management · Diagnostics · Technology · Contact Us. Providers Clinicians Patients Secondary high blood pressure: When another condition causes Treating sleep apnea with a pressure mask, nasal devices, surgery, weight loss or other steps can help control the high blood pressure. Sleep Apnea Impairs Blood Pressure Regulation Researchers believe the combination of oxygen deprivation and the extremely high nighttime blood pressure caused by sleep apnea may be responsible for the Sleep Apnea: Symptoms, Causes, Diagnosis and Treatment Drastic problems can result from the oxygen deprivation of sleep apnea, including heart disease, high blood pressure, sexual disfunction, |
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