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)

Hyperlipidemia is a major risk factor for the premature development of coronary heart disease and it has been shown to increase the incidence of myocardial ischemia and cardiac events. Pentacyclic triterpenes possess antiatherosclerotic, antioxidant, anti-inflammatory and cytoprotective effects. To study the effect of plant derived triterpene, lupeol and its ester lupeol linoleate, on lipid status and biochemical changes on heart tissue, male albino Wistar rats were fed high-cholesterol diet (normal rat chow supplemented with 4% cholesterol and 1% cholic acid; HCD) for 30 days. There was a significant (p<0.001) increase in the levels of total cholesterol, triglycerides and phospholipids along with augmented activities of lactate dehydrogenase, aspartate aminotransferase, alanine aminotransferase and alkaline phosphatase in the heart tissue. Triterpenes treatment reduced the above alterations produced in hypercholesterolemic rats. The transmembrane enzymes, namely Na(+), K(+)-ATPase, Ca(2+)-ATPase and Mg(2+)-ATPase showed a decrease in their activities. Triterpenes treatment reversed these levels, prevented the hypertrophic cardiac histology and restored the normal ultrastructural architecture. In conclusion, lupeol and lupeol linoleate intervention minimized the lipid abnormalities and abnormal biochemical changes induced by HCD fed rats. This shows that triterpenes possess cardioprotective effects which will be beneficial in hypercholesterolemic condition. Out of these two triterpenes tested, lupeol linoleate appeared to be even more effective than lupeol.
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PMID:Protective effect of lupeol and its ester on cardiac abnormalities in experimental hypercholesterolemia. 1733 64

Bone marrow stromal cells (BMSC) can differentiate into various cell types including myocytes, which may be valuable in cellular therapy of myocardial infarction. In an attempt to increase the myogenic commitment of BMSC, we investigated the extent of conversion induced by the demethylation agent 5-azacytidine. BMSC isolated from the adult rat tibia were exposed in culture to 5microM 5-azacytidine for 24h, 1 day after seeding. The treatment was repeated at weekly intervals and the expression of muscle-specific proteins and genes was assessed. The results revealed that cultured cells lost the native expression of osteocalcin and alkaline phosphatase as a function of time and began to express connexin 43. Exposure to 5-azacytidine of BMSC induced, at 14 days, a myocyte-resembling phenotype that included the expression of muscle-specific proteins (sarcomeric alpha-actin, troponin T, desmin, alpha-actinin, and GATA-4) and genes (GATA-4, myoD, desmin, and alpha-actinin), numerous mitochondria and myofilaments; however, the latter did not form sarcomeres. Although some of these myogenic markers also appeared in untreated cells, exposure to 5-azacytidine induced an enhanced response of calcium channels, as well as a threefold increase in desmin and myoD gene expression and a twofold increase in alpha-actinin gene and protein expression above the control values. In conclusion, the results demonstrate a promoting effect of 5-azacytidine on the expression of muscle-specific proteins and genes in BMSC in culture. Notably, the myogenic differentiation takes place over a short period of time. Priming of mesenchymal cells to cardiomyogenic differentiation may have significant applications in cellular approaches to ameliorate muscle loss after myocardial ischemia.
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PMID:Promoting effect of 5-azacytidine on the myogenic differentiation of bone marrow stromal cells. 1803 91

Although cardiovascular disease is a principal cause of death in patients with chronic kidney disease (CKD), it is often asymptomatic in diabetic patients. The coronary artery calcification score (CACS) measured by multidetector computed tomography (MDCT) is useful for screening ischemic heart disease in the general population. We investigated which clinical parameters predict high CACS in predialysis diabetic nephropathy (DN). Participants were 85 patients with DN. Nobody had any history of coronary angioplasty or coronary bypass surgery. We measured blood counts, blood chemistry, bone alkaline phosphatase, intact-PTH, interleukin-6, osteoprotegerin (OPG), hemoglobin A1c, 25-hydroxyvitamin D (25(OH)D) and fetuin-A. CACS and bone mineral density (BMD) were measured by a single 16-slice MDCT and DEXA, respectively. The median value of CACS equaled 256 Agatston units (range 0-4494 units). Stepwise increase in CACS with CKD stage progression was observed (p<0.01 for trend). Simple regression analyses showed that Log (CACS+1) was positively correlated with age, systolic blood pressure, phosphorus and OPG. In addition, it was negatively correlated with nutritional parameters, such as body mass index, albumin, total-cholesterol and 25(OH)D. Fetuin-A and BMD had no impact on CACS. Multiple regression analyses showed that low albumin and high OPG were associated with high CACS. The sensitivity of OPG for detecting CACS>200 was 80%, when the cut-off value was 1.2 ng/mL. In conclusion, CACS increased with CKD stage progression in predialysis DN patients. Serum OPG was positively associated with high CACS and can be a useful screening tool for severe coronary calcification, whereas no association between fetuin-A and CACS was found.
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PMID:Serum osteoprotegerin as a screening tool for coronary artery calcification score in diabetic pre-dialysis patients. 1871 64

D-ribose, a naturally occurring pentose carbohydrate, has been shown to replenish high- energy phosphates following myocardial ischemia and high intensity, repetitive exercise. Human studies have mainly involved short-term assessment, including potential toxicity. Reports describing adverse effects of D-ribose with prolonged ingestion have been lacking. Therefore, this study assessed the toxicity of extended consumption of D-ribose in healthy adults. Nineteen subjects ingested 20 grams/Day (10 grams, twice a Day) of ribose with serial measurements of biochemical and hematological parameters at Days 0, 7, and 14. No significant toxic changes over the 14-day assessment period occurred in complete blood count, albumin, alkaline phosphatase, gamma glutamyltransferase, alanine amiotransferase, and aspartate aminotransferase. However, D-ribose did produce an asymptomatic, mild hypoglycemia of short duration. Uric acid levels increased at Day 7, but decreased to baseline values by Day 14. D-ribose consumption for 14 days appears not to produce significant toxic changes in both hematological and biochemical parameters in healthy human volunteers.
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PMID:Assessment of Hematological and Biochemical parameters with extended D-Ribose ingestion. 1879 39

One hundred and seventy-eight patients aged 60-95 years who had ischemic heart disease (IHD) and osteoporosis (OP) were examined. The serum levels of total cholesterol, triglycerides, high-density lipoproteins, low-density lipoproteins, apoA- and apoB-lipoproteins, calcium, phosphorus, alkaline phosphatase, etc. were measured on a Vitalab Flexor E. biochemical analyzer. Bone metabolic markers, such as parathyroid hormone (PTH), osteocalcin (OC), calcitonin (CT), as well as C-terminal telopeptides (CTTP) resulting from collagen type I (in serum and urine) were determined on a Stat Fax photometer. There was a high direct correlation between the serum levels of OC, CTTP and those of calcium and an inverse correlation between the serum concentrations of alkaline phosphatase and PTH and those of calcium in the groups of geriatric patients with IHD and OP. The plots of the function approximating the relationship of the levels of total protein, total and ionized calcium, creatinine, and alkaline phosphatase to age could predict a adaptation potential reduction in these patient groups.
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PMID:[Biochemical markers of bone resorption and formation in geriatric patients with ischemic heart disease and osteoporosis]. 1971 20

One hundred and eighty-four patients aged 60-95 years who had ischemic heart disease (IHD) were examined. The serum levels of total cholesterol, triglycerides, high-density lipoproteins, low-density lipoproteins, apoA- and apoB-lipoproteins, calcium, phosphorus, alkaline phosphatase, etc. were measured on a Vitalab Flexor E. biochemical analyzer. The content of cytokines was determined by solid-phase immunoassay using the Protein contour test systems (State Research Institute of Particularly Pure Biologicals, Saint-Petersburg) on a Stat Fax photometer. There were pronounced changes in the cytokine spectrum in elderly and senile persons despite the fact that they had an adequate lipid spectrum. The increased levels of interleukin (IL)-1 beta and IL-6 suggest that there is an inflammatory reaction whereas those of tumor necrosis factor-alpha may be indicative of the body's autoimmune readiness. There was a high direct correlation of the content of apolipoproteins Apo-B1 and IL-6, as well as LP alpha and IL-6; ApoB1/Apo-A1 and IL-6. A high inverse correlation was found in the content of Apo-B1 and IL-6, which is a poor predictor in old age group patients. There was a mean correlation in the levels of apolipoproteins (B1 and B alpha) and the cytokines IL-1 beta, IL-4, IFN-gamma, TNF-alpha, and IFN-alpha; and there was a mean inverse correlation between the concentrations of apolipoproteins A1 and these cytokines.
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PMID:[Plasma lipids and interleukins in geriatric patients with ischemic heart disease]. 1982 89

A 55-year-old Asian man was referred to a gastroenterology clinic by his general practitioner following an incidental finding of raised alkaline phosphatase (ALP) on routine blood testing. His ALP was found to be 198 (NR 35-129) with otherwise normal liver function tests. His past medical history consists of essential hypertension, type 2 diabetes and ischaemic heart disease. He was asymptomatic except for an intermittent ache over his left clavicle, which he had put down to angina. His gamma glutamyltransferase (GGT) was normal at 33 (NR 11-50) making bone the most likely source of his raised ALP. Imaging, including x-ray, CT and bone scan, showed an area of abnormality in the left clavicle. The appearances were consistent with fibrous dysplasia. We discuss the interpretation and investigation of deranged 'liver' function tests and suggest a rational and cost-effective diagnostic path to follow.
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PMID:I can feel it in my bones--a case of deranged 'liver' function? 2273 54

Cardiovascular disease is the leading cause of death in dialysis patients and is significantly associated with poor survival in incident dialysis patients. However, little is known about the pathogenesis of cardiovascular disease in these populations. (123) I-15-(p-iodophenyl)-3(R,S)- methylpentadecanoic acid (BMIPP) imaging is useful for detection of ischemic heart disease. We examined imaging characteristics to identify potential pathologies of cardiac disease, other than ischemic heart disease. The subjects were 42 incident dialysis patients without histories of ischemic heart disease such as acute coronary syndrome. All the patients underwent BMIPP imaging in addition to a screening examination. Patients with positive findings in BMIPP imaging underwent myocardial perfusion imaging within 2 weeks after BMIPP imaging to evaluate the possibility of ischemic heart disease. Twenty-two patients were BMIPP-positive and 10 of these patients had negative findings on perfusion imaging and were defined as mismatch cases. Compared with patients who were BMIPP- and perfusion-positive, the mismatch cases had higher parathyroid hormone (PTH), serum albumin, and alkaline phosphatase levels. The mismatch cases also formed the largest proportion in the highest PTH tertile. A histologic examination of a mismatch case with no stenotic lesions in the coronary artery revealed the presence of cardiac hypertrophy and fibrosis. These findings suggest that a perfusion-metabolism mismatch may be present in incident dialysis patients without a history of ischemic heart disease. This mismatch is associated with PTH, which suggests potential involvement of uremic cardiomyopathy in the pathology of cardiac disease in these patients.
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PMID:Myocardial SPECT Images in Incident Hemodialysis Patients Without Ischemic Heart Disease. 2641 42


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