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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Related Content, Henry Ford Hospital, Detroit, MI Related Content. Experimental Drug Controls Cardiac Patients' Blood Pressure. Another study finds a quick way to spot cause of shortness of breath Experimental Drug Controls Cardiac Patients' Blood Pressure Two of the studies found that clevidipine offered better blood pressure control shortness of breath is related to trouble with the heart or the lung. Lungs: Pulmonary and Respiratory Health and Medical Information Shortness of breath has many causes affecting either the breathing passages and lungs or Causes of Shortness of Breath. High Blood Pressure · Depression Symptoms: Symptoms and Diagnosis of Heart and Blood Vessel Symptoms may include pain, shortness of breath, muscle cramps, muscle fatigue, . Normally, the body quickly adjusts to maintain blood pressure. High Blood Pressure: Heart and Blood Vessel Disorders: Merck High blood pressure (hypertension) is abnormally high pressure in the arteries. . fatigue, nausea, vomiting, shortness of breath, and restlessness. MedlinePlus Medical Encyclopedia: High blood pressure (Hypertension) Hypertension is the term doctors use for high blood pressure. . Severe headache; Shortness of breath; Significant sweating; Vision changes Shortness of breath Shortness of breath, or dyspnea, is a feeling of difficult or labored including blood pressure, pulse rate, and the presence of heart murmurs or other High blood pressure and exercise: Why activity is key - MayoClinic.com High blood pressure and exercise â” Here's what the connection means to you. Severe shortness of breath; An irregular heartbeat; Excessive fatigue Does High Blood Pressure Signal Coronary Disease? High blood pressure can be a sign of cardiovascular disease or can make it worse, Chest pressure, unusual shortness of breath, palpitations or Circulation -- Bozkurt and Mann 108 (2): 11e If the shortness of breath is prolonged and persistent, it is likely to be . shock (extremely low blood pressure), severe systemic infection (sepsis), Shortness of breath, high blood pressure - Women's Health - MedHelp This is a discussion on MedHelp about Shortness of breath, high blood pressure. Community members of MedHelp provide help, support, guidance and discussion Adult Health Advisor 2005.4: Warning Signs of Heart Disease Some common warning signs are chest pain, shortness of breath, swelling in the legs and feet, leg pain with walking, high blood pressure, Shortness of Breath in an Obese Young Man Shortness of Breath in an Obese Young Man . MH is a clinical syndrome of elevated blood pressure with other features including retinopathy, HON - News : Experimental Drug Controls Cardiac Patients' Blood Experimental Drug Controls Cardiac Patients' Blood Pressure Another study finds a quick way to spot cause of shortness of breath. By Robert Preidt High blood pressure and Shortness of breath from exercise and Sore List of 439 causes for High blood pressure and Shortness of breath from exercise and Sore tongue, alternative diagnoses, rare causes, misdiagnoses, Health Information Shortness of breath; Very low blood pressure; Bluish skin (cyanosis); Confusion Shortness of breath; Low blood pressure; Rapid heart rate Blood pressure control with Clevidipine These peptides are natural antagonists to renin, an enzyme produced in the kidneys that leads to high blood pressure. Shortness of breath from heart Shortness of Breath Can Be a Dangerous Symptom on Yahoo! Health Shortness of breath (dyspnea) can result from lung disease or simply from being out of shape. But shortness of breath can also be a significant risk… |
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