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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Bradycardia Slow Heart Rate - AOL Body Overview - What is bradycardia? Having bradycardia (say --å“bray-dee-CAR-dee-uh-- Some medicines for treating heart problems or high blood pressure, Sinus Bradycardia After Intravenous Pulse Methylprednisolone Sinus bradycardia after repeated administration of high-dose pulse His blood pressure was normal, and when roused from sleep his heart rate increased Bradycardia - OhioHealth In addition, some common medications for high blood pressure and other heart problems can cause bradycardia or make it worse. Electrolyte disorders. Bradycardia (Slow Heart Rate)-Overview What is bradycardia?Having bradycardia (say Áœbray - dee - CAR - dee - uhÁ«) means your Some medicines for treating heart problems or high blood pressure, Bradycardia and High Bollod Pressure - Heart Disease - MedHelp Bradycardia and High Bollod Pressure. This forum is for questions and support regarding Blood in semen pressurePressure ulcer. High bloodAmylase - blood Your High Blood Pressure Questions Answered Á” Low Blood Pressure Among the heart conditions that can lead to low blood pressure are an abnormally low heart rate (bradycardia), problems with heart valves, heart attack and Treating High Blood Pressure (Hypertension) With TOPROL-XL - www To learn more about treatment for high blood pressure with TOPROL-XL, as severe bradycardia); A sudden and severe drop in the blood pressure and blood Bradycardia Different types of bradycardia include (collectively referred to as ÁœbradyarrhythmiasÁ«) : Treat your high blood pressure and/or diabetes. High Blood Pressure: Heart and Blood Vessel Disorders: Merck High blood pressure (hypertension) is abnormally high pressure in the arteries. .. heart rate (bradycardia), heart failure, possible masking of low blood Arrhythmias They include coronary artery disease, high blood pressure, diabetes, smoking, A heart rate of less than 60 beats per minute is called bradycardia. Bradycardia (Slow Heart Rate) - Yahoo! Health If you take a cardiac medicine called digoxin, you may have blood tests to see whether high levels of digoxin could be causing bradycardia. |
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