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.

blood pressure variation exercise
Blood pressure measurement
The information is recorded on a chip in the device and allows the doctor to get a detailed picture of blood pressure variation in a normal environment.

Graded associations between cardiorespiratory fitness, fatness
The sum of four skinfolds, waist circumference, and blood pressure were assessed with a . Pubertal stage explained about 15% of the variation in waist

Seasonal Blood Pressure and Body Weight Variation in Patients on
Woodhouse PR: Seasonal variation of blood pressure and its relationship to . and blood pressure at rest and during exercise in healthy middle-aged men.

Thieme-connect - Abstract
Considerable interindividual variation in the response of blood pressure to exercise has been found. Factors independently contributing to this variation

Cardiorespiratory Fitness, BMI, and Risk of Hypertension: The
Although blood pressure is reduced by exercise training, these responses 24,25 However, similar data on the contribution of genetic variation to the

Journal of Human Hypertension - Abstract of article: Time of day
Time of day (TOD) for exercise may influence blood pressure (BP) reduction in hypertension because of the diurnal variation of BP and the duration of BP

Effect of beta-adrenergic blockade on blood pressure variation in
on blood pressure variation was studied in ten pa-. tients with moderate hypertension. .. sponse to exercise. Clin. Pharmacot. Therap. 12, 303 (t971)

heart rate and blood pressure variability
A similar procedure may be applied to the blood pressure variation. called the exercise pressor reflex since they produce an increase in blood pressure

The Outcome of is Dependent on Exercise Tolerance Testing the Time
Changes in heart rate and blood pressure were cal-. culated by subtracting resting values from . nificant diurnal variation in exercise test variables.

Association of Cardio respiratory Fitness, Body Composition and
Research has indicated the importance of exercise in reducing the risk of . The variation in systolic blood pressure and diastolic blood pressure may be

Molecular Genetics of Human Blood Pressure Variation -- Lifton 272
Genetic variation in aldosterone synthase predicts plasma glucose levels. Genomic Scan for Exercise Blood Pressure in the Health, Risk Factors,

Body height is a determinant of seasonal blood pressure variation
Body height is a determinant of seasonal blood pressure variation in in urinary excretion of sodium or in exercise activity between the seasons.

Arquivos Brasileiros de Cardiologia - Response of blood pressure
OBJECTIVE: To evaluate the behavior of blood pressure during exercise in systolic pressure on the peak of stress higher than 220mmHg, variation in

Ambulatory blood pressure monitoring: fancy gadgetry or clinically
Cox regression analysis showed that the hazard ratio was increased by 1.63 per 1% increase in the coefficient of variation of systolic blood pressure.

Blood Pressure Spikes in Winter -- Law 5 (1): 1 -- DOC News
"We had thought that perhaps it was the cold and lack of light that account for the blood pressure variation, but we're not seeing predictable differences

Lack of heart rate variation between morning and afternoon
Lack of heart rate variation between morning and afternoon exercise blood pressure, RPP, or blood plasma lactic acid responses during exercise at the

Ambulatory Physical Activity as a Determinant of Diurnal Blood
Key Words: blood pressure ⢠exercise ⢠sleep ⢠position ⢠extreme dipper ⢠Gender Differences in Associations of Diurnal Blood Pressure Variation,

Medical Hypotheses : Blood pressure variation in healthy humans: A
Polymorphic variation of the β2AR and blood pressure that the Gly16 group not only has a higher BP at rest but also throughout light and heavy exercise.

Exercise induced increase in diastolic blood pressure. Is it an
To investigate whether the diastolic blood pressure variation keeps its diagnostic value during upright bicycle exercise, we evaluated the diastolic blood


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