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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Some factors influencing blood pressure of tooth pulpâ™ I
FACTORS INFLUENCING. BLOOD PRESSURE OF TOOTH. PULP. 1423. TABLE. I. Mean values of tooth pulp and systemic blood. pressure responses to intravenously

Factors Influencing Finger Systolic Blood Pressure Test for
Factors Influencing Finger Systolic Blood Pressure Test for Diagnosis of. Vibration-Induced White Finger. Youichi KUROZAWA. 1. and Yoshiro NASU

Factors influencing the formation of new human coronary lesions
Factors influencing the formation of new human coronary lesions: age, blood pressure, and blood cholesterol. WJ Mack and DH Blankenhorn

The American Journal of Cardiology : Factors Influencing Blood
Factors Influencing Blood Pressure Response to Trandolapril Add-On Therapy in Factors such as age and race/ethnicity might influence blood pressure (BP)

Science Links Japan | Factors Influencing Finger Systolic Blood
Title;Factors Influencing Finger Systolic Blood Pressure Test for Diagnosis of Vibration-Induced White Finger. Author;KUROZAWA YOUICHI(Tottori Univ.,

Profile on circadian blood pressure and the influencing factors
Profile on circadian blood pressure and the influencing factors in essential hypertensive patients after treatment

Factors influencing the formation of new human coronary lesions
Factors influencing the formation of new human coronary lesions: age, blood pressure, and blood cholesterol. W J Mack and D H Blankenhorn

Age, Blood Pressure, and Vessel Diameter as Factors Influencing
Age, Blood Pressure, and Vessel Diameter as Factors Influencing the Arterial Retinal Flicker Response. Edgar Nagel,1 Walthard Vilser,2,3 and Ines Lanzl4

VHL - Blood pressure measurement: Knowledge retention and factors
blood pressure, compliance in using an approved procedure, and to identify other factors influencing compliance/non-compliance.

Blood Pressure - Definition, Diet, Factors Influencing High Blood
One look at the blood pressure statistics indicates that the body's ability to maintain its blood pressure is vital to life. Chronic hypertension is a major

Clinical Factors Influencing Blood Pressure in the Neonate
List factors that may cause altered blood pressure in the neonate. Introduction .. highly significant negative influence of mean airway pres-

IngentaConnect Factors influencing reduction in blood pressure and
Factors influencing reduction in blood pressure and left ventricular mass in hypertensive type-1 diabetic patients using captopril or doxazosin for 6 months

Journal of Human Hypertension - Factors influencing acute blood
Factors influencing acute blood pressure values in stroke subtypes. K N Vemmos1, K Spengos2, G Tsivgoulis2, N Zakopoulos1, E Manios1, V Kotsis1,

Factors influencing blood pressure and heart rate variability in
Factors influencing blood pressure and heart rate variability in hypertensive humans. JS Floras, MO Hassan, JV Jones, BA Osikowska, PS Sever and P Sleight

Do maternal and intrauterine factors influence blood pressure in
Do maternal and intrauterine factors influence blood pressure in childhood? PH Whincup, DG Cook and O Papacosta Department of Public Health and Primary Care

Factors Influencing the Systolic Blood Pressure
Systolic blood pressure is more difficult to control than diastolic -- earlier intervention is warranted to reduce risk.

Blood pressure - Wikipedia, the free encyclopedia
Factors such as age, gender and race influence blood pressure values. Pressure also varies with exercise, emotional reactions, sleep, digestion and time of

Hypertension - Wikipedia, the free encyclopedia
Obtaining reliable blood pressure measurements relies on following several rules and understanding the many factors that influence blood pressure reading


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