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

The Brain Resuscitation Clinical Trial (BRCT) II was a double-masked, randomized, controlled clinical study of cardiopulmonary-cerebral resuscitation (CPCR) designed to test therapy for the amelioration of brain damage after cardiac arrest. Lidoflazine, a calcium entry blocker, was chosen for investigation because of its beneficial effects on postischemic encephalopathy in animals, its minimal cardiovascular depressant effects, and its protective actions in myocardial ischemia in patients. Twenty-four hospitals in eight countries participated. Over 4 years, 520 patients were recruited, of whom 4 were subsequently lost to follow-up. Patients' age averaged 63 years and 62% were men. Cardiac arrest occurred prior to hospitalization in 63%. All patients received basic and advanced life support until circulation was restored, and then standardized extracerebral organ support. After restoration of spontaneous circulation with normal blood pressure, patients who failed to awaken were randomly assigned to receive IV administration of either lidoflazine or placebo. In each patient, outcome was evaluated by cerebral performance during a 6-month follow-up period. Periodic safety monitoring was carried out to assure that no excess of mortality or complications occurred in the lidoflazine-treated group compared with the placebo-treated group.
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PMID:A randomized clinical trial of calcium entry blocker administration to comatose survivors of cardiac arrest. Design, methods, and patient characteristics. The Brain Resuscitation Clinical Trial II Study Group. 165 29

A prospective study in 76 newborn with perinatal asphyxia searching for myocardial ischemia was carried out. The disease was found in 51% of the patients. With electrocardiogram, myocardial enzymes, X ray and clinical manifestations the diagnosis was elaborated. No difference in the sex was present, the mean of gestational age was 35 weeks, and with mean birth weight 2,216 g, respiratory distress was present in all the people; only 20.5% developed heart failure and two had heart murmurs; 61.5% showed cardiomegaly. The creatine kinase MB isoenzyme at twelve hours after birth was raised in most of the patients. Respiratory distress syndrome was the principal diagnosis in 38%; hypoxic ischemic encephalopathy and peri-intraventricular hemorrhage was present in 50 and 33% of the patients, respectively. Mortality rate was 33%. Also a comparative study in the infants with and without myocardial ischemia was carried out appearing significative difference in: 1. Cardiomegaly, 2. Hypoxic-ischemic encephalopathy and 3. Creatine kinase MB isoenzyme.
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PMID:[Transient myocardial ischemia in newborn babies with perinatal asphyxia (hypoxic cardiomyopathy)]. 209 33

The inclusion of hemosorption through activated coals into the comprehensive treatment of 580 patients sick with atherosclerosis has made it possible to achieve a positive clinical effect among 81 per cent of the patients sick with the ischemic heart disease, 79 per cent of atherosclerotic discirculatory encephalopathy and 76 per cent of obliterating atherosclerosis of lower limbs. The positive dynamics is especially visible among patients who are administered the programmatic hemosorption, making it possible over a long period of time (3-5 years) to sustain remission in the clinical state and the normal level of the lipids in the blood. The direct effect is expressed in the improved microcirculation, disappearance of the sludge-syndrome and the reduction of ischemic disorders. The remote effect of hemosorption is connected with the repeated removals of cholesterin of the atherogenic lipoproteids, which leads, we believe, to the interruption or even regression of the atherosclerotic process.
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PMID:The programmatic hemosorption in the comprehensive treatment of atherosclerosis of various localization. Hemosorption in the treatment of atherosclerosis. 344 32

The interconnection between coronary insufficiency and cerebral discirculation in the genesis of discirculatory encephalopathy has been established. Almost in every fifth patient with discirculatory encephalopathy, or ischemic heart disease, combined damage to the coronary arteries and brachiocephalic trunk was diagnosed.
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PMID:[Chronic coronary insufficiency in the genesis of atherosclerotic circulation encephalopathy]. 813 83

BW12C79 stabilizes the oxyhemoglobin molecule resulting in a reversible left-shift of the oxygen saturation curve. The activity of a number of bioreductive anticancer drugs, such as mitomycin C, may be enhanced under hypoxic conditions. Twenty-four patients with various malignancies received BW12C79 and mitomycin C. BW12C79 was administered i.v. with a loading dose (20-50 mg/kg) over 1 h followed by a maintenance infusion of 4 mg/kg/h for 5 h. Percentage modification of the oxyhemoglobin (degree of left-shift) was dose related with maximum modification of 56% and was maintained for the duration of maintenance infusion of BW12C79. Hemoglobin electrophoresis showed a fast moving band consistent with the BW12C79-oxyhemoglobin complex. Side effects at the top dose level comprised headache, nausea/vomiting, vein irritation, and myocardial ischemia. One other patient suffered from an acute encephalopathy of unknown etiology a few days following BW12C79. 31P magnetic resonance spectroscopy of exercising calf muscles showed increased breakdown of high energy phosphate stores and a greater reduction in pH. Recovery of the high energy phosphate stores after exercise was slow. These results were consistent with reduced oxygen supply due to either a left shift of the oxygen saturation curve and/or reduced muscle blood flow. BW12C79 did not interfere with the pharmacokinetics of mitomycin C. In conclusion, this phase I study demonstrates the feasibility of achieving a significant left shift in the oxygen saturation curve in cancer patients which is maintained for at least 5 h with acceptable toxicity. The maximum tolerated dose of BW12C79 was 50 mg/kg loading infusion followed by a maintenance infusion of 4 mg/kg/h. Magnetic resonance spectroscopy results were consistent with reduced supply of oxygen to exercising skeletal muscle. BW12C79 may be of potential benefit as an adjunct to bioreductive drugs in the treatment of solid tumors.
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PMID:A phase I study of the left-shifting agent BW12C79 plus mitomycin C and the effect on the skeletal muscle metabolism using 31P magnetic resonance spectroscopy. 824 19

As many as 34 patients having stage II-III atherosclerotic dyscirculatory encephalopathy with coexisting ischemic heart disease in the presence of stenosing and occlusive lesions of major brain arteries were evaluated for effects pentoxiphyllin and corglycon on the clinical course of this medical condition as well as systemic and cerebral haemodynamics. In this series, 82.7 percent of patients derived benefit from a single intravenous infusion of pentoxiphyllin and corglycon and course treatment with these drug preparation that was evidenced by an improvement in the parameters of systemic and cerebral hemodynamics and regression of neurologic symptomatology. The results of the studies made permit recommending pentoxiphyllin in combination with corglycon for treatment of those DE patients with eukinetic and hypokinetic types systemic haemodynamics, whereas pentoxiphyllin alone--for those with hyperkinetic type of haemodynamics, taking into consideration its cardiodepressive effects.
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PMID:[The pentoxifylline and corglycon treatment of patients with circulatory encephalopathy against a background of atherosclerotic lesions of the major cerebral arteries]. 900 77

Association of ischemic heart disease (IHD) with vascular affections of the brain is the cardiocerebrovascular syndrome having common pathogenetic mechanisms of formation in the structure of cardiovascular pathology. Some specificities were studied of the clinical course of IHD concomitant with hypertensive dyscirculatory encephalopathy (HDE) in 35 patients (main group), with 25 IHD controls free from manifestations of neurological symptomatology. In IHD HDE patients the anginous syndrome is characterized by a lesser dependency on time in each period of 24 hours and physical load and greater dependency on arterial pressure, meteofactors, it is often accompanied by cephalgia appearing with the intake of antianginal drugs, dizziness, memory, sleep disturbances. The main group patients demonstrated elevated levels of LPO products, those of lipid metabolism, and the AO system tension.
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PMID:[Characteristics of the clinical course of ischemic heart diseases in patients with hypertensive dyscirculatory encephalopathy]. 1145 23

Hypertension is a major public health problem both in the developing and developed countries of the world and if untreated, can lead to various fatal complications like cerebral stroke, encephalopathy, ischaemic heart disease (IHD), renal failure and sudden cardiac death, etc. In the present study, a comparative evaluation was made between angiotensin-II receptor antagonists like losartan potassium (50 mg daily) and angiotensin converting enzyme (ACE) inhibitors like enalapril maleate (5 mg daily) in 100 patients (50 males and 50 females having 25-50 years of age) of mild to moderate essential hypertension with diastolic blood pressure (DBP) 90-109 mmHg. Both the drugs were tried as monotherapy for their clinical efficacy, safety, tolerability and adverse effect profile in this open trial. Losartan potassium lowered the DBP to <90 mmHg in 62% of the patients at the end of 8 weeks compared to 40% in the enalapril group. Percentage of side effects with losartan was 20 and 50 with enalapril. It is concluded that both the drugs are effective antihypertensive agents and cause significant and comparable fall in systolic blood pressure (SBP) and DBP in patients of mild to moderate essential hypertension. But losartan potassium has been found to be more effective with fewer side effects when compared to enalapril maleate.
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PMID:A comparative evaluation of therapeutic effects of once a day dose of losartan potassium versus enalapril maleate in mild to moderate essential hypertension. 1202 7

We examined 4 groups of patients younger than 70 years with atherosclerosis of coronary and/or cerebral arteries. In 98 patients the disease began as acute myocardial infarction, 65 patient from the very beginning suffered from angina of effort, 33 had ischemic cerebral stroke, and in 26 dyscirculatory encephalopathy was diagnosed. Among patients with ischemic heart disease (IHD) and cerebrovascular damages (CVD) 87 and 89%, respectively, had dyslipidemia (DLP). Disorders of lipid composition of the blood with pronounced hypercholesterolemia prevailed in patients with IHD and elevated level of triglycerides or selective decrease of antiatherogenic fraction of lipoproteides - in patients with CVD (especially in patients with stroke). When treatment is prescribed to patients with IHD and CVD at the background of DLP it is necessary to take into consideration DLP variants in order to obtain most effective action of statins and fibrates.
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PMID:[About dyslipidemic states characteristic for various forms of ischemic heart disease and cerebrovascular damages]. 1826 Sep 3

Radiolabeled diacetylbis(4-methylthiosemicarbazonato)copper(II) [Cu(II)(atsm)] is an effective positron-emission tomography imaging agent for myocardial ischemia, hypoxic tumors, and brain disorders with regionalized oxidative stress, such as mitochondrial myopathy, encephalopathy, and lactic acidosis with stroke-like episodes (MELAS) and Parkinson's disease. An excessively elevated reductive state is common to these conditions and has been proposed as an important mechanism affecting cellular retention of Cu from Cu(II)(atsm). However, data from whole-cell models to demonstrate this mechanism have not yet been provided. The present study used a unique cell culture model, mitochondrial xenocybrids, to provide whole-cell mechanistic data on cellular retention of Cu from Cu(II)(atsm). Genetic incompatibility between nuclear and mitochondrial encoded subunits of the mitochondrial electron transport chain (ETC) in xenocybrid cells compromises normal function of the ETC. As a consequence of this impairment to the ETC we show xenocybrid cells upregulate glycolytic ATP production and accumulate NADH. Compared to control cells the xenocybrid cells retained more Cu after being treated with Cu(II)(atsm). By transfecting the cells with a metal-responsive element reporter construct the increase in Cu retention was shown to involve a Cu(II)(atsm)-induced increase in intracellular bioavailable Cu specifically within the xenocybrid cells. Parallel experiments using cells grown under hypoxic conditions confirmed that a compromised ETC and elevated NADH levels contribute to increased cellular retention of Cu from Cu(II)(atsm). Using these cell culture models our data demonstrate that compromised ETC function, due to the absence of O(2) as the terminal electron acceptor or dysfunction of individual components of the ETC, is an important determinant in driving the intracellular dissociation of Cu(II)(atsm) that increases cellular retention of the Cu.
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PMID:An impaired mitochondrial electron transport chain increases retention of the hypoxia imaging agent diacetylbis(4-methylthiosemicarbazonato)copperII. 2217 33


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