Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0151744 (myocardial ischemia)
 31,282 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Over the past decade, research in blood platelet physiology has led to the suggestion that platelets play an important part in the pathogenesis and complications of coronary artery disease. Occlusive intravascular platelet aggregates have been shown to cause ischemic myocardial damage in the experimental animal and to be present in some patients who die suddenly. The interplay between endothelial damage and platelet aggregation has been implicated in the etiology of atherosclerosis. Products released from platelets during aggregation may cause arterial spasm. Patients with overt ischemic heart disease and with the risk factors associated with coronary artery disease have been found to have abnormally reactive platelets. Clinical studies of drugs that inhibit platelet aggregation have been reported to show a beneficial effect in preventing cardiac deaths or myocardial infarction; other studies have been negative or shown only a trend toward benefit. This report reviews the theoretical and experimental basis for the platelet hypothesis and the current data on the use of antiplatelet drugs in patients with coronary disease.
 ...
PMID:Role of blood platelets in coronary artery disease. 3 67

The authors examined 180 patients where disorders of cerebral circulation developed on the background of different disturbance of the heart rhythm. The patients suffered from rheumatic heart disease, hypertensive disease or atherosclerosis in concomitance with ischemic heart disease. For comparison, 100 patients with similar disorders were studied, but without disturbances of heart rhythm. It was established that disorders of cerebral circulation were more frequently seen in permanent forms of cardiac fibrillation and less so in paroxysmal cardiac fibrillation and extrasystoles. The most severe disorders of cerebral circulation were seen in combinations of permanent forms of cardiac fibrillation with single and frequent ventricular extrasystoles in patients with rheumatic heart disease.
 ...
PMID:[Cerebral circulatory disorders in patients with cardiovascular diseases accompanied by cardiac rhythm disorders]. 6 83

The association of idiopathic hypertrophic subaortic stenosis (IHSS) with significant coronary atherosclerosis is little known, only 43 cases being available in the literature, 2 of which are personal ones. But the incidence of this association has certainly been underestimated. It is especially found from the sixth decade onwards, and at least 20% of patients with IHSS in and above the age group have stenosing lesions of the coronary artery. It is almost impossible to establish the presence of associated coronary abnormalities from the clinical features of from electrocardiogram. It does however seem worthwhile looking for this condition in IHSS when there is refractory chest pain, especially to beta-blockers, particularly if the patient is aged over 50 and has risk factors for ischaemic heart disease. It is also good to find IHSS associated with known coronary artery disease by using simple non-invasive techniques such as phonomechanocardiography and especially echo-cardiography; it is important not to miss the myocardial lesion and to treat concurrently if there is likely to be an indication for dealing with the coronary arteries surgically. The beta-blockers are the treatment of choice for both conditions, together with anticoagulents. If they fail, myectomy or myotomy together with aorto-coronary bypass graft should be considered.
 ...
PMID:[Obstructive cardiomyopathy and associated coronary atherosclerosis. Review of the literature and report of 2 personal cases]. 10 92

Studies on lipid and lipoprotein abnormalities which are associable with ischemic heart disease were presented. None of the subjects studied for this report had clinical signs or symptoms characteristic to "familial or sporadic" hyperlipoproteinemia. Only few showed gross abnormalities in lipid chemistries which are compatible with these clinical entities. Lipid abnormalities characteristic to the majority of ischemic heart patients were modest to moderate increase of serum total and free cholesterol and triglyceride; either independent increase or combined increase of these lipid fractions. Determination of free cholesterol may favor to detect such minute abnormality in modest hyperlipidemia as seen in ischemic heart patients. As expressed by our lipoprotein PAG electrophoresis pattern, B and Bp pattern (Fig. 1) seemed to be important lipoprotein abnormalities because of high incidence of ischemic heart disease (60 to 65%). Another feature of these hyperbeta lipoproteinemic state without (B pattern) or with (Bp pattern) moderate prebeta lipoprotein is highly suggestive of premature onset of ischemic heart suggestive premature onset of ischemic heart disease in the subjects with these lipoprotein patterns. Pb battern (hyperpre-beta lipoproteinemic state) was the next, because of frequent occurrence of this pattern (approx. 30%) among the cardiovascular patients and relatively high incidence (approx. 40%) of ischemic heart disease. PB pattern (combine hyperpre-beta and hyperbeta lipoproteinemic state) occurred rarely but incidence of ischemic heart disease in the subject with this pattern was high (approx. 40%). Midband lipoprotein which is one of the unique lipoprotein species detected by PAG electrophoresis may possibly reflect disordered lipoprotein metabolism. However, its association with ischemic heart disease seemed highly unlikely. However, further studies on this and other unusual lipoproteins detectable with PAG electrophoresis seems productive. Extensive studies on cine coronary angiographically established subjects (well characterized study subjects) with this new method in addition to the others would be highly productive to obtain more reliable conclusion on this subject, and hence, to obtain more effective guide line for early identification or for prevention of coronary atherosclerosis.
 ...
PMID:Ischemic heart disease and hyperlipidemia. 16 34

The activity of adenylcyclase was determined in the thrombocytes of 54 male patients with Stage III coronary atherosclerosis. In 34 patients without signs of ischaemic heart disease the activity of adenylcyclase and phosphodiestherase and the amount of cortisol were determined in blood plasma. In 40 rabbits the same enzymes activity was determined in the thrombocytes and lipid tissue, as well as the amount of lipoproteins of low and very low density was determined in blood plasma prior to and following cortisol administration. The results of clinical and experimental studies have demonstrated that cortisol affects the activity of the adenylcyclase system enzymes in the thrombocytes and lipid tissue, as well as the transformation of lipoproteins in blood plasma.
 ...
PMID:[Disorder of the regulation of metabolic processes in coronary arteriosclerosis]. 18 37

Blood plasma cholesterol and triglycides concentration lipids composition of lipoproteins as contrasted to the amount of 17-KS and their hormonally active fractions excreted were investigated in 87 patients with myocardial infarction in their history and in 49 practically healthy individuals with no clinical manifestations of ischemic heart disease. In patients with coronary atherosclerosis exhibiting normal blood plasma lipids level, the excretion of 17-KS and of their fractions did not differ from that in healthy individuals. Patients with hyperlipoproteinemia of the IIa, IIb and IV types demonstrated a significantly reduced excretion of 17-KS, etiocholanolone, androsterone and dehydroepiandrosterone. No differences in the excretion of androgens depending upon the type of hyperlipoproteinemia were recorded. A significant negative correlation between the blood plasma cholesterol concentration and the amount of ethocholanolone excreted, the level of hypertriglyceridemin and the passage of dehydroepiandrosterone with urine was noted. In patients with hyperlipoproteinemia and a reduced androgens excretion a deranged lipids composition of lipoproteins was disclosed. A decrease in the amount of androgens leads to disruption of the synthesis and metabolism of lipoproteins and exerts a marked influence on the emergence and further development of hyperlipoproteinemia.
 ...
PMID:[Lipid composition of lipoproteins and excretion of 17-ketosteroids in coronary arteriosclerosis]. 18 38

The chemical composition of ultracentrifugal fractions of VLDL (d less than 1006), LDL (d 1006-1063) and HDL (d less than 1063) has been studied in males affected by atherosclerosis of different vascular beds. Thirty-seven subjects affected by post-infarction cardiopathy (M.I.) showed significantly higher values of total-C, VLDL-C and LDL-C when compared to 52 controls. Twenty-three patients affected by non-occlusive ischaemic heart disease (I.H.D.) showed higher values than controls of total-C, VLCL-C, LDL-C, total TG, VLDL-TG, and GDL-TG. Twenty-three patients with atherosclerosis of the inferior limbs (P.A.) were characterized by increased levels of total-TG, VLDL-TG, VLDL-C, HDL-C. A group of patients who had suffered a stroke from cerebro-vascular disease (C.V.D.) did not show any significant difference from controls. In the M.I. group, 56% of the patients had a high level of C-VLDL. Patients with I.H.D. were characterized mostly by an increase in C-LDL, Patients with P.A. showed the highest values of total -TG, VLDL-TG and LDL-TG. Some of the observed differences are probably due to different metabolic backgrounds. Some other differences may be due to variations in dietary habits after heart infarction. Patients with levels of plasma cholesterol and triglyceride beyond the 90th percentile of the normal group showed many abnormalities in the chemical composition of their lipoproteins. It is noteworthy that increased amounts of cholesterol may collect in lipoprotein classes different from LDL while increased amounts of triglyceride may collect in classes different from VLDL.
Atherosclerosis 1977 Feb
PMID:Chemical composition of ultracentrifugal fractions in different patterns of human atheroslcerosis. 18 83

The examination was conducted in 1048 patients with the ischaemic heart disease. Both males, and females displayed most frequently Type II hyperlipidemia. Type IV was more frequent in males, than in females. The incidence of Types IIa and IIb depended on the stage of coronary atherosclerosis, the age and sex of the patients. The concomitant diseases were found to influence the incidence of hyperlipidemia. Among the tested drugs administered in a course of therapy of 4 weeks atromidine proved to be most effective for the examined types of hyperlipidemia (IIa, IIb, IV). Hyperlipidemia relapsed in 1/3 of the patients within 1 year.
 ...
PMID:[Drug treatment of hyperlipemia in middle-aged and old persons with ischemic heart disease]. 19 32

The aim of the present study was to determine whether skin fibroblasts derived from patients with ischemic heart disease (IHD), which could not be related to accepted risk factors, would show a metabolic abnormality with respect to lipid or lipoprotein metabolism. Male patients 30-52 years old suffering from IHD were subdivided into two groups: those in whom IHD was not associated with risk factors such as hypertension, hyperlipoproteinemia, diabetes or smoking (group I); and those in whom heavy smoking was the only major risk factor recognized (group II). The controls were patients with angiographically normal coronary arteries (group III). Skin fibroblasts obtained from these patients were cultured and investigated with respect to metabolism of low density lipoprotein (LDL), synthesis of cellular lipids and induction of cholesterol ester accumulation in the presence of chloroquine, an inhibitor of lysosomal hydrolases. After 24 h incubation, the uptake and degradation of LDL protein in cells from patients of group II was significantly higher than in the controls, group III, but not different from those of group I. Hydrolysis of [3H] cholesterol linoleate, and incorporation of [3H] oleic acid into total lipids and into cholesterol esters was similar in cell cultures of the 3 groups studied. After exposure to chloroquine and LDL, the cells from the different donors accumulated cholesterol ester to a similar extent. Thus, whereas no significant difference was encountered in the lipid and lipoprotein metabolism in cells of patients with IHD without risk factors and controls, some increase in LDL metabolism was seen in cells from patients with IHD and with a history of smoking. It remains to be determined whether this increase was causally related to smoking.
Atherosclerosis 1978 Jul
PMID:Study of cultured skin fibroblasts from patients with and without ischemic heart disease. Metabolism of low density lipoprotein and cholesterol ester, synthesis of cellular lipids and effect of chloroquine on accumulation of cholesterol ester. 20 2

This study was designed to assess HDL levels in children of young men with IHD, compared with children of asymptomatic men. Like their fathers, sons of patients with heart disease, had significantly lower HDL cholesterols than controls. This difference was independent of fasting triglycerides, obesity, diet or physical activity, and was the only "coronary risk factor" in this young age group.
Atherosclerosis 1979 Jul
PMID:High density lipoprotein levels in children of young men with ischaemic heart disease. 22 9


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