abstract：:In this study, we examined the effects of exposure of heart fatty acid-binding protein (h-FABP) to chemically generated O2- or OH. with respect to its oleate binding and to its electrophoretic properties. Purified rat h-FABP at 40 microM scavenged as much as 30% O2- and 85% OH.. On the other hand, when 2 nmol (4 micro...

journal_title：Molecular and cellular biochemistry

authors： Jones RM,Prasad MR,Das DK

更新日期：1990-10-15 00:00:00

abstract：:For evaluation whether the membrane fatty acid-binding protein is related to mGOT, studies on the structure and function of both purified proteins were performed. Physicochemical characterization revealed that both proteins are different: the membrane fatty acid-binding protein has a molecular weight of 40 kD and a pI...

journal_title：Molecular and cellular biochemistry

authors： Stremmel W,Diede HE,Rodilla-Sala E,Vyska K,Schrader M,Fitscher B,Passarella S

更新日期：1990-10-15 00:00:00

abstract：:Based on sequence relationships the cytoplasmic fatty acid-binding proteins (FABPs) of mammalian origin are divided into at least three distinct types, namely the hepatic-, intestinal- and cardiac-type. Highly conserved sequences of FABPs within the same type correlate with immunological crossreactivities. Isoforms of...

journal_title：Molecular and cellular biochemistry

authors： Spener F,Unterberg C,Börchers T,Grosse R

更新日期：1990-10-15 00:00:00

abstract：:A major component of the soluble fraction of rat heart is a homopolymer (Mr about 400-650 k) of a small protein (Mr about 20 k). This cardiac protein, which is highly homologous to alpha-B-crystallin, was isolated in its native state and visualized by electron microscopy. A homogeneous population of globular particles...

journal_title：Molecular and cellular biochemistry

authors： Longoni S,Lattonen S,Bullock G,Chiesi M

更新日期：1990-09-21 00:00:00

abstract：:Shin et al. (Biochim Biophys Acta 444: 794-801, 1976) described the subcellular location of [3H]folic acid after injection into rats. The microsomal fraction of the liver contained relatively large amounts of tracer initially but lower amounts at later times. Because of the heterogeneous nature of the microsomal fract...

journal_title：Molecular and cellular biochemistry

authors： Brody T,Stokstad EL

更新日期：1990-09-03 00:00:00

abstract：:The effects of infusing superoxide dismutase (SOD) and catalase (CAT) into the coronary circulation were investigated in isolated, working rat hearts prior to and during a 15 minute episode of regional ischemia followed by 30 minutes reperfusion. Aortic output, left ventricular pressure and dP/dT were recorded. Compar...

journal_title：Molecular and cellular biochemistry

authors： Koke JR,Christodoulides NJ,Chudej LL,Bittar N

更新日期：1990-08-10 00:00:00

abstract：:In this study we tested the hypothesis that reduced myofibrillar ATPase activities in end-stage heart failure are associated with a redistribution of myosin isozymes. Cardiac myofibrils were isolated from left ventricular free wall from normal human hearts and hearts at end-stage heart failure caused by coronary arter...

journal_title：Molecular and cellular biochemistry

authors： Alousi AA,Grant AM,Etzler JR,Cofer BR,Van der Bel-Kahn J,Melvin D

更新日期：1990-07-17 00:00:00

abstract：:Two forms of the regulatory subunit of the type II cAMP-dependent protein kinase (RII55 and RII52) were identified from bovine heart by gel electrophoretic behaviour. After autophosphorylation the RII55 isoform migrated more slowly (RII55/57) while the migration of RII52 isoform did not shift. Both isoforms showed dif...

journal_title：Molecular and cellular biochemistry

authors： González-Nicolás J,Jiménez JS,Moreno FJ

更新日期：1990-07-17 00:00:00

abstract：:Administration of Ca2+ channel blockers in cardiac disorders and the central role of Ca2+ in modulating neutrophil functions, prompted us to investigate whether administration of nifedipine to mice would alter their natural resistance to infectious agents like Salmonella typhimurium. Neutrophil chemiluminescence (CL) ...

journal_title：Molecular and cellular biochemistry

authors： Nalini K,Andrabi KI,Ganguly NK,Wahi PL

更新日期：1990-06-25 00:00:00

abstract：:Twigs-dry leaves smoke condensate (TDS) was investigated for its DNA damaging activity in human peripheral lymphocytes, by using a sensitive method, fluorescence analysis of DNA unwinding (FADU). An aqueous turmeric component (Aq.T) was studied as a protective agent. TDS at one to 100 folds dilution induced 55% DNA da...

journal_title：Molecular and cellular biochemistry

authors： Shalini VK,Srinivas L

更新日期：1990-06-01 00:00:00

abstract：:Immunoassays such as rocket immunoelectrophoresis, western dot blot hybridization, and competitive ELISA analysis were used to estimate and compare homology among fishes (several species), crab, toad, chicken and rodent metallothioneins. The relative abundance of tissue-specific metallothionein in catfish was highest ...

journal_title：Molecular and cellular biochemistry

authors： Chatterjee A,Maiti IB

更新日期：1990-05-10 00:00:00

abstract：:Acyl-CoA: lysolecithin and lysolecithin: lysolecithin acyltransferases, as well as acyl-CoA hydrolase are important enzymes in lung lipid metabolism. They use amphiphylic lipids as substrates and differ in subcellular localization. In this sense, lipid-protein interactions can be an essential factor in their activity....

journal_title：Molecular and cellular biochemistry

authors： Pérez-Gil J,Estrada P,Acebal C,Arche R

更新日期：1990-05-10 00:00:00

abstract：:N-Methyl-N-nitrosourea (MNU)-induced rat mammary adenocarcinomas contain high levels of a novel leupeptin-sensitive serine endopeptidase. Its properties apparently differ from those of other similar endopeptidases reported to be present in various normal and malignant mammalian tissues. The same leupeptinsensitive ser...

journal_title：Molecular and cellular biochemistry

authors： Eto I,Bandy MD

更新日期：1990-04-18 00:00:00

abstract：:Whereas in rat liver mitochondria the hyperthyroid state causes an increase both in fatty acid unsaturation and in the Ea of D-3-hydroxybutyrate dehydrogenase and a decrease in phase transition temperature, in hyperthyroid rat heart mitochondria these changes are negligible. D-3-hydroxybutyrate dehydrogenase in both t...

journal_title：Molecular and cellular biochemistry

authors： Lippolis R,Morini P,Conserva AR,Casalino E,Landriscina C

更新日期：1990-03-27 00:00:00

abstract：:A crude preparation of heavy sarcoplasmic reticulum (HSR) was isolated using 1 gram of muscle obtained from swine susceptible to malignant hyperthermia (MH) and from control swine. The caffeine and ATP concentration-dependency of Ca-release was determined using suction filtration with radioisotopic 45Ca as a tracer. R...

journal_title：Molecular and cellular biochemistry

authors： O'Brien PJ

更新日期：1990-03-05 00:00:00

abstract：:Modification of 60S ribosomal subunits from rat liver with dimethylmaleic anhydride (60 mumols/ml) is accompanied by release of 35% of the protein. The acidic ribosomal proteins, as well as 9 basic proteins, are selectively liberated from the ribosomal subunits. Reconstitution of the protein-deficient particles with t...

journal_title：Molecular and cellular biochemistry

authors： Garrido S,González PJ,Palacián E,Hernández F

更新日期：1990-02-09 00:00:00

abstract：:Three antisera were prepared against non-histone protein classes named NHCP1, NHCP2 and dehistonized chromatin (with different affinity to DNA) from hamster liver. Two main antigenic bands of MW 17,000 and 36,000 were specific in the NHCP1 fraction and one antigen of MW 56,000 was specific for the NHCP2 fraction from ...

journal_title：Molecular and cellular biochemistry

authors： Wojtkowiak Z,Kiliańska Z,Kłyszejko-Stefanowicz L

更新日期：1990-01-18 00:00:00

abstract：:Murine erythroleukemia cell lines derived from Friend virus infected mice can be induced to differentiate in vitro by numerous agents. Among these compounds are certain naturally occurring purines such as hypoxanthine or 1-methylhypoxanthine. We have extended these studies to other modified oxypurines and have identif...

journal_title：Molecular and cellular biochemistry

authors： Kerr SJ

更新日期：1990-01-18 00:00:00

abstract：:The effects of purified Ca2+, phospholipid-dependent protein kinase (C-kinase) were studied on adenylate cyclase activity from rat brain striatum. C-kinase treatment of the membranes stimulated adenylate cyclase activity, the maximal stimulation between 50-80% was observed at 3.5 U/ml, whereas the catalytic subunit of...

journal_title：Molecular and cellular biochemistry

authors： Anand-Srivastava MB,Srivastava AK

更新日期：1990-01-18 00:00:00

abstract：:Four situations in which membrane transport is altered by disease are discussed: (a) non-specific leaks induced by poreforming agents; (b) glucose transport and cellular stress; (c) Ca2+-ATPase and hypertension; (d) Na+ channels and HSV infection. ...

journal_title：Molecular and cellular biochemistry

authors： Pasternak CA

更新日期：1989-11-23 00:00:00

abstract：:Lipids form an essential part of the biomembrane and it is of paramount importance to study their conformational aspects. It is found that the present methods of nomenclature for lipids are totally inadequate for describing these diverse amphipathic molecules. Further the existing methods are incompatible in terms of ...

journal_title：Molecular and cellular biochemistry

authors： Chandrasekhur I,Sasisekharan V

更新日期：1989-11-23 00:00:00

abstract：:The adaptive response of renal metabolism of glucose was studied in isolated rat proximal and distal renal tubules after a high protein-low carbohydrate diet administration. This nutritional situation significantly stimulated the gluconeogenic activity in the renal proximal tubules (about 1.5 fold at 48 hours) due, in...

journal_title：Molecular and cellular biochemistry

authors： García-Salguero L,Lupiáñez JA

更新日期：1989-10-31 00:00:00

abstract：:The effect of Aclacinomycin B (ACM-B), an anthracycline antitumor antibiotic, on the DNA-dependent RNA synthesis using single- and double-stranded DNAs of known base content and sequence is studied. The data show that ACM-B effectively inhibits the double-stranded DNA-directed RNA synthesis with a preference of poly[d...

journal_title：Molecular and cellular biochemistry

authors： Li LH,Yu FL

更新日期：1989-10-05 00:00:00

abstract：:We have investigated the links between electrical excitation and contraction in mammalian heart muscle. Using isolated single cells from adult rat ventricle, a whole-cell voltage-clamp technique and quantitative fluorescence microscopy, we have measured simultaneously calcium current (ICa) and [Ca2+]i (with fura-2). W...

journal_title：Molecular and cellular biochemistry

authors： Lederer WJ,Cannell MB,Cohen NM,Berlin JR

更新日期：1989-09-07 00:00:00

abstract：:To investigate insulin action in muscle and adipose tissue in hepatic cirrhosis, a recently described animal model was used. Dimethylnitrosamine administration induced histologically proven cirrhosis. Contrary to expectation, muscle strips from cirrhotic rats displayed increased insulin sensitivity both with respect t...

journal_title：Molecular and cellular biochemistry

authors： Chowdhury SA,Taylor R

更新日期：1989-08-15 00:00:00

abstract：:Under normal and ischemic conditions backdiffusion of radiolabeled non-esterified fatty acids (NEFA) has been demonstrated. In the fasted normal canine heart the extraction fraction (EF) during interventions with glucose or lactate loading, vasodilation, and metabolic level augmentation was determined, and compared wi...

journal_title：Molecular and cellular biochemistry

authors： Duwel CM,Visser FC,van Eenige MJ,Roos JP

更新日期：1989-06-27 00:00:00

abstract：:Lysosomes are defined traditionally with the marker enzyme acid phosphatase. We showed recently that lysosomes from human fibroblasts can be separated into a light and dense fraction as well as prelysosomal population. We now provide evidence that although acid phosphatase is enriched in all three fractions, the marke...

journal_title：Molecular and cellular biochemistry

authors： Kelly BM,Waheed A,Van Etten R,Chang PL

更新日期：1989-06-01 00:00:00

abstract：:In order to initiate the study of the functional differences between myosin alkali light chain isoforms and to investigate the mechanisms of their differential expression, we have isolated cDNA clones for two human alkali light chain isoforms. Here we report DNA sequence and RNA blotting analyses that demonstrate that...

journal_title：Molecular and cellular biochemistry

authors： Wade R,Feldman D,Gunning P,Kedes L

更新日期：1989-06-01 00:00:00

abstract：:Two preparations with arginyl-tRNA synthetase activity have been obtained from rabbit liver post-microsomal fraction: a) a high-molecular-weight containing the multienzyme aminoacyl-tRNA synthetase complex and b) a low-molecular-weight preparation containing free enzymes. Thermal inactivation of arginyl-tRNA synthetas...

journal_title：Molecular and cellular biochemistry

authors： Berbeć H,Paszkowska A

更新日期：1989-04-11 00:00:00

abstract：:Experiments were designed to determine if cotton bract tannin, a component of cotton mill dust, would promote the phosphorylation of alveolar macrophage proteins in doses potentially achievable in vivo. Rabbit alveolar macrophages were loaded with 32PO4 and challenged with various doses of tannin for time periods rang...

journal_title：Molecular and cellular biochemistry

authors： Hempel SL,Rohrbach MS

更新日期：1989-04-11 00:00:00

abstract：:Studies have established that major increases in muscarinic acetylcholine receptor (mAchR) binding in the brain appear to coincide with synaptogenesis. The neuroblastoma x glioma hybrid NG108-15 cell line has been demonstrated to possess numerous functional characteristics of intact neurons, including synapse formatio...

journal_title：Molecular and cellular biochemistry

authors： Ghahary A,Cheng KW

更新日期：1989-04-11 00:00:00

abstract：:A preparation of UDP-GalNAc:sialosyl lactosylceramide N-acetylgalactosaminyl transferase (E.C. 2.4.1.92) obtained from 14-day chick embryo brain was delipidated partially by treatment with cold acetone in the presence of varying amounts of sodium dodecyl sulphate (SDS). The lipid content and the enzyme activity of the...

journal_title：Molecular and cellular biochemistry

authors： Cortassa S,Maccioni HJ

更新日期：1989-01-23 00:00:00

abstract：:The presence of a butyrylcholinesterase (BuChE, EC 3.1.1.8) in the musocal cells of the chicken intestine was demonstrated by histochemical and biochemical methods. The study of its distribution, along the intestine from duodenum to rectum, showed that the jejuno-ileum possesses the highest activity. Sucrose gradient ...

journal_title：Molecular and cellular biochemistry

authors： Sine JP,Ferrand R,Colas B

更新日期：1989-01-23 00:00:00

abstract：:The role of antioxidant enzymes, particularly superoxide dismutase (SOD), in immortalization and malignant transformation is discussed. SOD (generally MnSOD) has been found to be lowered in a wide variety of tumor types when compared to an appropriate normal cell control. Levels of immunoreactive MnSOD protein and mRN...

journal_title：Molecular and cellular biochemistry

authors： Oberley LW,Oberley TD

更新日期：1988-12-01 00:00:00

abstract：:Early responses of lungs to a single radiation dose of 30 Gy were marked by an inflammatory reaction and the onset of pneumonitis within 4 weeks following hemithorax radiation in the rat. Superoxide dismutase reduced the severity of radiation lesions in lungs. ...

journal_title：Molecular and cellular biochemistry

authors： Malaker K,Das RM

更新日期：1988-12-01 00:00:00

abstract：:In an isolated, normothermic rat heart model (Langendorff, 37 degrees C), dimethylthiourea (DMTU) infusion only during reperfusion reduced both injury and measurable hydrogen peroxide (H2O2) concentrations after global ischemia. Cardiac function was assessed by measurement of ventricular developed pressure (DP). H2O2 ...

journal_title：Molecular and cellular biochemistry

authors： Brown JM,Terada LS,Grosso MA,Whitman GJ,Velasco SE,Patt A,Harken AH,Repine JE

更新日期：1988-12-01 00:00:00

abstract：:Effects of Ca2+ ionophores, A23187 and lasalocid, on superoxide anion generation by chemotactic peptide, N-formyl-methionyl-leucyl-phenylalanine methyl ester, in rabbit peritoneal exudate neutrophils were studied. The ionophores by themselves did not activate superoxide anion generation in these neutrophils. When prei...

journal_title：Molecular and cellular biochemistry

authors： Jacob J

更新日期：1988-11-01 00:00:00

abstract：:A membrane-bound L-asparaginase (EC 3.5.1.1) of Tetrahymena pyriformis was purified to homogeneity. The purified enzyme is a lipoprotein, since it is inactivated by phospholipase C and its activity is restored by the addition of naturally occurring lipids, such as phosphatidylcholine, triolein and oleyl acetate. The r...

journal_title：Molecular and cellular biochemistry

authors： Tsirka SA,Kyriakidis DA

更新日期：1988-10-01 00:00:00

abstract：:The purpose of this study was to examine the Ca2+-Mg2+ myofibrillar ATPase and protein composition of cardiac and skeletal muscle following strenuous activity to voluntary exhaustion. Sprague-Dawley rats (200 g) were assigned to a control and exercised group, with the run group completing 25 m.min-1 and 8% grade for 1...

journal_title：Molecular and cellular biochemistry

authors： Belcastro AN,Parkhouse W,Dobson G,Gilchrist JS

更新日期：1988-09-01 00:00:00

abstract：:Glycosphingolipid biosynthesis was examined using [3H]-galactose as a precursor as rat L6 myoblasts fused to form multinucleated myotubes. Incorporation of label into neutral glycolipids decreased steadily as the population of myotubes increased, so that final biosynthesis was one-half that observed with myoblasts (p ...

journal_title：Molecular and cellular biochemistry

authors： Leskawa KC,Erwin RE,Buse PE,Hogan EL

更新日期：1988-09-01 00:00:00