Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0004153 (atherosclerosis)
 77,401 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

An enzymatic activity of shuttle systems for reduction equivalents transport (malate-aspartate, glycerophosphate, lactate, glutamate and beta-hydroxybutyrate dehydrogenase) was studied spectrophotometrically in liver tissue of intact rabbits and animals with experimental atherosclerosis. Content of malate, oxaloacetate, glutamate, alpha-ketoglutarate, alpha-glycerophosphate, dihydroacetone phosphate, lactate, pyruvate, beta-hydroxybutyrate and acetoacetate were studied. In experimental atherosclerosis coordinated functioning of the enzymes, which participate in the utilization of the cytoplasmic NAD-H2 and the alteration in the ratio of reduced and oxidized metabolites in the systems, were found to be impaired.
 ...
PMID:[The function of shuttle systems of liver extramitochondrial hydrogen transport in experimental atherosclerosis]. 0 20

Spasm of coronary arteries can cause chest pain indistinguishable from classic angina pectoris in patients without atherosclerosis of these vessels or recognizable heart disease. Associated electrocardiographic changes usually correspond to the coronary artery affected and disappear when the attack of pain ends. Sublingual nitrates are excellent agents for the control of the episodic anginal symptoms. There have been scattered reports of myocardial infarction occurring in patients with normal coronary arteries; a role of arterial spasm in these cases in speculative.
 ...
PMID:Myocardial ischemia from coronary arterial spasm. 0 82

The physician who understands the pathophysiology of angina pectoris can apply rational therapeutic measures based on an appreciation of the determinants of myocardial oxygen supply and demand. Most patients with angina secondary to coronary atherosclerosis can be treated conservatively using a systematic approach that includes correction or removal of underlying causes or precipitating factors and the judicious use of sublingual nitroglycerin. In patients with more resistant angina, use of oral or topical nitroglycerin or sublingual isosorbide dinitrite as well as propranolol can be advised. Aortocoronary bypass surgery can offer significant improvement in carefully selected patients with frequent angina poorly controlled by medical therapy. The most important consideration in the treatment of angina is protection of coronary blood flow reserve by primary prevention of the atherosclerotic process itself. All individuals from families prone to coronary artery disease should be evaluated for alterable risk factors, the most important being cigarette smoking, hypertension, and hypercholesterolemia. Considering the high risk of unheralded sudden death in previously asymptomatic patients with coronary atherosclerosis, angina can, in a sense, be considered a fortunate harbinger of coronary stenosis, identifying candidates for secondary preventive measures aimed at retarding the progression of vascular disease. More importantly, angina serves as an index for detecting families at high risk of coronary artery disease, in whom early application of primary prevention may afford a more promising outlook.
 ...
PMID:Angina pectoris. Diagnosis and treatment. 0 83

Thirty-two consecutive patients who earlier received indirect or direct myocardial revascularization underwent reoperation with one or more internal mammary artery grafts either alone or in combination with saphenous vein grafts. The main indication for reoperation was graft closure or progression of coronary atherosclerosis in nongrafted vessels, or both. Graft construction was performed under normothermic perfusion and anoxic arrest with interrupted suture technique. No intraoperative infarctions or hospital deaths occurred. All patients are alive after an average follow-up period of 20 months, and two thirds are asymptomatic. Arteriography after reoperation in nine patients revealed patency of eight of nine internal mammary artery and five of five secondary vein grafts. When angiographic and symptomatic indications for reoperation exist, the internal mammary artery bypass graft has become a valuable alternative, particularly for patients with small coronary vessels or previous vein graft failure.
 ...
PMID:Internal mammary artery bypass graft in reoperative myocardioal revascularization. 0 70

We report an aortographic-pathological correlation in a patient with Takayasu arteritis. The inflammatory activity in Takayasu arteritis gradually subsides and accordingly, the histological appearance goes through a cycle of changes, ranging from acute florid inflammation to an old scarred vessel. At gross pathological inspection, the aortic intima frequently shows longitudinal wrinkling and tree-barking indistinguishable from syphilitic aortitis. In other instances, secondary atherosclerosis totally obscures the underlying changes of aortitis. In such instances, close search at various levels of the aorta is likely to uncover persistent foci of arteritis and thereby permit identification of the pathological changes as secondary to previous aortitis.
 ...
PMID:Takayasu arteritis. An arteriographic-pathological correlation. 0 26

Analgesic nephropathy occurs most commonly in Australia, where it is the second most frequent cause of renal failure. Whilst the reasons for widespread abuse of analgesics are poorly understood, the consequences of abuse are now well recognised. Increasing emphasis is being placed on the analgesic syndrome and on the accelerated atherosclerosis seen in these patients. Attention in the article is drawn to ways in which the analgesic syndrome can be recognised and analgesic abuse ceased. A therapeutic approach is presented which allows the successful withdrawal of analgesic in almost all patients.
 ...
PMID:Analgesic nephropathy. 0 32

Human heart lipoprotein lipase was purified by affinity chromatography on heparin-Sepharose 4B. When crude extracts of heart acetone powder were applied to columsn, about 40% of total lipase activity was bound to the gel and then eluted with 1.5 M NaCl. At this stage the eluted enzyme was purified 1900-fold. Disc gel electrophoresis yielded a single protein band corresponding with lipolytic activity. Minimum molecular weight of the protein was 60,000 as determined by polyacrylamide gel electrophoresis in the presence of sodium dodecyl sulfate. The purified enzyme was highly unstable; however, its activity could be partially stabilized at --20C by bovine serum albumin, glycerol, or ethylene glycol. The activity of the purified enzyme (i) had a pH optimum between 7.8 and 8.0; (ii) required serum for full enzymatic activity; apoC-II could be substituted for serum; (iii) was inhibited by by apoC-I in the presence of activated substrate; (iv) was markedly inhibited by NaCl; and (v) was stimulated by heparin.
Atherosclerosis
PMID:Purification and characterization of lipoprotein lipase from human heart. 0 61

Eleven substances capable of either augmenting or depleting the alpha- and - beta-adrenergic capacities of the autonomic nervous system were administered to rats exhibiting hypothalamic hypercholesterolemia and to normal controls. Only the beta-adrenergic blocking agents propranolol and possibly 6-OH dopamine were observed to alter (raise) the serum cholesterol concentration, and this occurred in both experimental and control animals. Neither atropine, nor the serotonin-depleting agent, rho-chlorophenylalanine, nor the serotonin-antagonist cyproheptadine, were observed to alter serum cholesterol level. Such absence of effect was also noted with metaraminol, phenoxybenzamine, isoproterenol, epinephrine, reserpine, and alpha-methyl tyrosine.
Atherosclerosis
PMID:Neurogenic hypercholesterolemia: influence of autonomic drugs. 0 62

Oral administration of the benzodiazepines (diazepam, lorazepam, chlordiazepoxide, bipotassium chlorazepate) in Triton WR-1339-induced (200 mg/kg, blood collection 18 h later) hyperlipidaemia in rats elicited marked decrease of serum total lipids, total cholesterol and triglyceride levels, and alterations in free fatty acid and free glycerol content. The optimal doses for diazepam, lorazepam, chlordiazepoxide and bipotassium chlorazepate were estimated to be 5 mg/kg. Other benzodiazepines, namely oxazepam, medazepam and nitrazepam, elicited only minor changes in serum lipids levels, while with grandaxin no change was observed. The optimal doses of diazepam and lorazepam brought about the same changes in serum lipid content as did clofibrate (90 mg/kg, p. o.). If diazepam, lorazepam, chlordiazepoxide and bipotassium chlorazepate were administered in doses of 5 mg/kg in Triton WR-1339-treated rats (blood collection taken 3 h later), a significant decrease of total lipids and triglyceride levels was observed. The free glycerol level only altered after the administration of chlordiazepoxide, which brought about a significant reduction.
Atherosclerosis
PMID:Effects of some benzodiazepine derivatives on Triton WR-1339-Induced hyperlipidaemia in rats. 0 63

A total of 160 1-2 day old chickens were fed a 2% cholesterol diet for a period of 8 to 42 days and compared with an equal number of controls. Aortas were analyzed for various indexes of reactivity of connective tissue, cholesterol content and scanning electron microscopy (SEM) characteristics of the endothelial lining. Cholesterol feeding for a period up to 6 weeks resulted in doubling the level of serum cholesterol. It was, however, without effect on the activity of prolyl hydroxylase, lysyl oxidase, collagenase and collagen content in the aortic wall. As early as 3 weeks of feeding significant changes occurred in total and esterified cholesterol content. At the same time endothelial cells were characteristically contracted with several long cytoplasmic elongations and protrusions. A significant decrease of activity of the above enzymes was found in aortic tissue with increased age of the chicken. Collagen content in aortas increased with age of chickens. It is concluded that cholesterol as an atherogenic agent induces marked changes in endothelial cells and lipids of chicken aorta at earlier periods, prior to the activation of connective tissue.
Atherosclerosis 1976 Sep
PMID:Early changes in the arterial wall of chickens fed a cholesterol diet. 0 48


1 2 3 4 5 6 7 8 9 10 Next >>