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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Catecholamine Excretion and Circadian Blood Pressure Profile in Urinary NA, A, and DA excretion during the day and night is presented . Circadian blood pressure variation in endocrine disorders. Arch Intern Med -- Association of Impaired Diurnal Blood Pressure Conclusion Blunted diurnal blood pressure variation is associated with a SBP, and diastolic BP readings every 15 minutes during the day and every 30 The Effect of Meals at Different Mealtimes on Blood Pressure and Nearly all elderly people show some decline in systolic blood pressure (BP) after . This variation during the day has implications for the timing of Body height is a determinant of seasonal blood pressure variation Body height is a determinant of seasonal blood pressure variation in patients The subjects spent virtually the entire day indoors during both the summer Day-night blood pressure variation in normotensive OBJECTIVE--To examine day-night blood pressure (BP) variation in normotensive, normoalbuminuric subjects with type I diabetes and to assess the prevalence Disturbance of Circadian Rhythm in Heart Rate, Blood Pressure and 50 bpm higher during night than during day, attenuated at stroke-onset, .. pressure variation in transgenic hypertensive rats. Hypertension Postprandial Hyperglycemia Impairs Diurnal Blood Pressure Variation Three-quarters of the patients showed nocturnal nondipping of blood pressure, the authors report, but their systolic blood pressure during the day did not Nephrology Dialysis Transplantation Does diurnal variation in Does diurnal variation in blood pressure exist in CAPD patients? Z. Korzets, A. Erdberg, . paradoxical reduction of BP occurring during the day. American Journal of Hypertension : Relationship Between Diurnal Relationship Between Diurnal Blood Pressure Variation and Diurnal Blood Glucose . However, the systolic BP during the day was not significantly different IngentaConnect Predictors of interindividual variation in That total interindividual variation in BP is as great or greater during inactive hours Keywords: Ambulatory blood pressure; predictors of variation; Journal of Hypertension - Abstract: Volume 21(11) November 2003 p A comparison of awake-sleep blood pressure variation between normotensive in Japanese-American women during sleep, but not at other times of the day, Effect of beta-adrenergic blockade on blood pressure variation in trasound monitoring of blood pressure during induced. hypotension. Picketing, G.W.: Variation in arterial pressure throughout. the day and night. Clin. American Journal of Hypertension - Predictors of interindividual This suggests that either the factors contributing to interindividual variation in nighttime blood pressure differ from those that contribute during the day Relationship between circadian blood pressure variation and Circadian variation in blood pressure did not impact circadian sodium excretion . Next, the effect of average systolic blood pressure during the day and Reproducibility of Blood Pressure Variation in Older Ambulatory of BP variability, especially during the day, was low in the . minant of diurnal blood pressure variation. Hypertension 1999;34:685â“691. Diurnal Blood Pressure Variation in Progressive Autonomic Failure In normotensive and hypertensive subjects, blood pressure (BP) is characterized by a circadian pattern, with higher pressures during the day and lower SPC Guide During the study, I discovered that my own blood pressure was quite high, chart indicates the variation between multiple readings taken on the same day. High blood pressure : Why using a self-measurement device? Heart beats; The breathing cycle; The cycle during the day (day/night variation); Nervous regulation of the blood pressure; Hormonal regulation of the blood Systolic blood pressure variation during the first 6 days of life. Systolic blood pressure variation during the first 6 days of life. Systolic blood pressure increased on average by 2 mmHg/day, but increased most |
| blood pressure variation during day |
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