Abstract：
:Homocysteine (Hcys) may be implicated in different diseases, especially in cardiovascular illnesses. The most reactive form of Hcys is its cyclic thioester-homocysteine thiolactone (HTL), which is formed in plasma and represents up to 0.29% of plasma total Hcys. Recently, it has been observed that Hcys and HTL may modify plasma proteins, including albumin, hemoglobin or fibrinogen, but the role of this process is not yet well known. The aim of our study in vitro was to investigate the modifications of human plasma total proteins after incubation with the reduced form of Hcys in concentrations 10-100 micromol/l, and HTL in concentrations 1-0.1 micromol/l, which correspond to levels found in human plasma during hyperhomocysteinemia in vivo. The aim of our study was also to explain the effects of Hcys and HTL on coagulation activity of human plasma. We showed that in model system in vitro Hcys and HTL change the level of thiol, amino and carbonyl groups in plasma total proteins. Moreover, our studies reported that not only Hcys (10-100 micromol/l), but also HTL (at lower concentrations than Hcys) modulates the coagulation properties of human plasma.
journal_name
Gen Physiol Biophysjournal_title
General physiology and biophysicsauthors
Olas B,Kołodziejczyk J,Malinowska Jdoi
10.4149/gpb_2010_02_186subject
Has Abstractpub_date
2010-06-01 00:00:00pages
186-93issue
2eissn
0231-5882issn
1338-4325journal_volume
29pub_type
杂志文章abstract：:Hyperglycemia impairs oxidative capacity in skeletal muscle. Muscle oxidative capacity is regulated by peroxisome proliferator-activated receptor-γ co-activator-1α (PGC-1α). Transcutaneous carbon dioxide (CO2) enhances PGC-1α expression in skeletal muscle. Therefore, the aim of this study was to clarify the effects of...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2018048
更新日期：2019-05-01 00:00:00
abstract：:The upregulation of proprotein convertase subtilisin/kexin type 9 (PCSK9) was reported to be involved in regulating the levels of inflammatory markers and apoptosis in macrophages. This study aims to investigate the function and regulation of PCSK9 in myocardial ischaemia. The results of our study showed dramatically ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb-2019057
更新日期：2020-03-01 00:00:00
abstract：:Nucleosome sliding and nucleosome digestion are two main ways for regulating gene transcription. We constructed three characteristic parameters (CP) based on the information of CG0, CG1 and CG2 motifs, and used these parameters to analyze the sliding trend of -1 and +1 nucleosomes around TSS of genes with NFR in yeast...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2020002
更新日期：2020-05-01 00:00:00
abstract：:2-3-dimercapto-1-propane sulfonic acid, D-penicillamine and meso-dimercapto succinic acid, drugs widely applied as antidota against metal poisoning, and cysteine and glutathione were studied with respect to their ability to generate and to scavenge superoxide anion radical. Superoxide production and scavenging were te...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1992-04-01 00:00:00
abstract：:Malate dehydrogenases (MDH, L-malate:NAD oxidoreductase, EC 1.1.1.37), catalyze the NAD/NADH-dependent interconversion of the substrates malate and oxaloacetate. This reaction plays a key part in the malate/aspartate shuttle across the mitochondrial membrane, and in the tricarboxylic acid cycle within the mitochondria...
journal_title：General physiology and biophysics
pub_type： 杂志文章,评审
doi：
更新日期：2002-09-01 00:00:00
abstract：:The absorption of glucose (free, and released from membrane hydrolysis of maltose) and water in the isolated loop of the rat small intestine was studied in chronic experiments. Even at maximum glucose (75 mmol/l) or maltose (37.5 mmol/l) concentrations the rate of glucose transfer by solvent drag and by diffusion did ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1995-10-01 00:00:00
abstract：:Pretreatment with diazoxide, mitochondrial K(ATP) channel opener, was found to protect the rat heart against ischemia/reperfusion injury. Our aim was also to characterize the effects of diazoxide on the alterations of regulatory myocardial proteins, on mitochondrial ultrastructure, integrity and induction of apoptotic...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：2007-06-01 00:00:00
abstract：:Low-conductance chloride channel from skeletal muscle SR vesicles of the crayfish Astacus fluviatilis was incorporated into planar lipid bilayers and its basic characteristics were investigated. The channel has a relatively low unitary conductance of 26 pS in symmetrical 160 mmol/l choline-chloride. The dependence of ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1991-12-01 00:00:00
abstract：:Hyperlipidemia is found to be associated with changes in fatty acid (FA) profiles. The aim of this study was to investigate the effects of AHA-Step-1 dietary treatment and combination of fibrates (gemfibrozil) with dietary intervention on serum and erythrocyte phospholipid FA composition in human hyperlipidemia. 78 st...
journal_title：General physiology and biophysics
pub_type： 临床试验,杂志文章
doi：
更新日期：2009-01-01 00:00:00
abstract：:The effects of thrombin stimulation on megakaryocytopoiesis and pulmonary-platelet interactions were investigated before and after administration of the compound to 15 mongrel dogs. Each dog served as its own control. Thrombin was given to encourage the traffic of megakaryocytes into the lung and to study the thrombin...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1989-12-01 00:00:00
abstract：:Ischemic/reperfusion brain injury (IRI) is a very severe event with the multiple etiopathogenesis. Ischemic preconditioning (IPC) is an important phenomenon of adaptation of CNS to subsequent ischemia. An altered cross-talk between intracellular calcium stores is presumed in the mechanisms of ischemic damage/protectio...
journal_title：General physiology and biophysics
pub_type： 杂志文章,评审
doi：
更新日期：2009-01-01 00:00:00
abstract：:A growing body of evidence supports the role of free radicals in triggering the functional and metabolic disturbances following transient cerebral ischemia. This study was designed to evaluate whether the extent of reperfusion-induced inhibition of protein synthesis initiation as well as tissue injury can be reduced b...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：2004-12-01 00:00:00
abstract：:The capacity of five synthetic analogs of [8-arginine] vasopressin (AVP) to stimulate frog skin sodium transport (natriferic activity) was characterized electrophysiologically using the method of short-circuit current, and compared to that of synthetic AVP. The analogs used were [8-arginine] vasopressins modified in p...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1990-12-01 00:00:00
abstract：:The paper deals with mathematical modelling of the transients obtained by fitting of delayed fluorescence (DF) induction trace. The transients are in certain, doubtless connection with electrochemical gradient (ECG) formed across thylakoid membranes upon illumination. The fitting of the C and D transients by using con...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：2001-09-01 00:00:00
abstract：:125I-labelled o-iodobenzoate (OIB) was prepared by means of an isotopic exchange reaction; its distribution and excretion were determined and its pharmacokinetic parameters in rats were calculated. The calculated value of the half-life of OIB elimination was 38.7 +/- 0.7 min, the distribution volume was 278.2 +/- 53.5...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1983-08-01 00:00:00
abstract：:The plasma membrane H(+)-ATPase of Neurospora has been reconstituted into planar lipid bilayer membranes by means of the vesicle-fusion technique described by Finkelstein and his collaborators (Zimmerberg et al., 1980; Cohen et al., 1980, 1984; Akabas et al., 1984). Enzyme was first transferred from isolated plasma me...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1993-10-01 00:00:00
abstract：:Large-conductance chloride channels (maxi-Cl channels) were studied in cultured myoblasts (L6 rat muscle cell line); in excised (inside-out) and in cell attached membrane patches using a conventional patch clamp method. The incidence of maxi-Cl channels was substantially higher in proliferating myoballs, then in quies...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1994-06-01 00:00:00
abstract：:Physical exercise could cause muscle and tissue damage due to increase in the formation of free oxygen radicals during exercise. The aim of the present study was to investigate the effect of crocin on parameters associated with oxidative stress in recovery from acute swimming exercise in rats. Rats were divided into e...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2015018
更新日期：2016-01-01 00:00:00
abstract：:Overconsumption of fructose increases the risk of nonalcoholic fatty liver disease (NAFLD), obesity and metabolic syndrome. NAFLD is currently one of the most common etiologies of chronic liver disease worldwide. The aim of the present study is to evaluate the hepatoprotective potential of zingerone against fructose-e...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2015041
更新日期：2016-04-01 00:00:00
abstract：:The effect of binding of an antitumour drug cis-diamminedichloroplatinum(II) (cis-[Pt(NH3)2Cl2]) to DNA on cutting effectiveness of BamHI, EcoRI, and SalI restriction endonucleases was quantitatively determined. The platinum complex inhibits the cleavage of plasmid pHC624 DNA linearized by BglI restrictase. From the p...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1992-12-01 00:00:00
abstract：:Quercetin and epigallocatechin gallate are two of the most abundant polyphenols in dietary plants, including apples, onions, red wine and green tea. The bioactivity of polyphenols is linked to their ability to interact with cell membranes without being internalized. The aim of the present study was to assess the short...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2012_005
更新日期：2012-03-01 00:00:00
abstract：:Ischemic and reperfusion injury is a serious condition related to numerous biochemical and electrical abnormalities of the myocardium. It has been repeatedly studied in various animal models. In this study, the production of hydroxyl radicals and electrophysiological parameters were compared in three species. Rat, gui...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2013016
更新日期：2013-06-01 00:00:00
abstract：:We studied the involvement of O2, pH and low molecular thiols in H2S-induced decomposition of S-nitrosoglutathione (GSNO). The GSNO decomposition - •NO release was evaluated by UV-VIS spectroscopy and Griess assay. The H2S donor Na2S was used. O2 slightly increased, but was not necessary for the H2S-induced GSNO decom...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2013026
更新日期：2013-09-01 00:00:00
abstract：:In the present study, we evaluated the antioxidant potential of Artemisia campestris essential oil (ACEO) and the possible protective effects against deltamethrin induced hepatic toxic effects. The ACEO showed radical scavenging activity with IC50 = 47.66 ± 2.51 µg/ml, ferric reducing antioxidant power (FRAP) potentia...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2016057
更新日期：2017-07-01 00:00:00
abstract：:The crystallization behaviour of the highly thermostable glucose isomerase from the Streptomyces sp. strain isolated from Tunisian soil was investigated using ammonium sulfate as a precipitating agent. We established phase diagrams at different temperatures and protein concentrations. It was found that the solubility ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2013077
更新日期：2014-01-01 00:00:00
abstract：:Depression is a brain disorder characterized by severe emotional, cognitive, neuroendocrine and somatic dysfunction. Although the latest generation of antidepressant drugs has improved clinical efficacy and safety, the onset of their clinical effect is significantly delayed after treatment commencement, and a large nu...
journal_title：General physiology and biophysics
pub_type： 杂志文章,评审
doi：10.4149/gpb_2015013
更新日期：2015-10-01 00:00:00
abstract：:This study was designed to investigate the possible effectiveness of chronic resveratrol administration on redox state, inflammatory mediators and apoptosis rate in diabetic rats. Male Wistar rats were divided into four groups (n = 6): normal control, diabetic control, normal rats treated with resveratrol, and diabeti...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2012_039
更新日期：2012-12-01 00:00:00
abstract：:The left and right ventricles fulfill different role in heart function. Here we compare chamber specific changes in local catecholamine concentrations; gene expression and the receptor protein amount of all three β-adrenoceptors (β-AR) in rat right heart ventricles exposed to acute (1 session) and repeated (7 sessions...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2014002
更新日期：2014-01-01 00:00:00
abstract：:Various techniques have been used (UV absorbance and fluorescence spectroscopy, polarised UV fluorescence microscopy, viscosimetry, electrophoresis and isoelectric focusing, superprecipitation, etc.) As suggested by several parameters, denervation interferes with the structure of actin by producing local conformation ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1987-06-01 00:00:00
abstract：:Activated endothelial cells play a crucial role in the formation of new blood vessels, a process known as angiogenesis, which can underlie the development of several diseases. Different antiangiogenic therapies aimed against vascular endothelial growth factor (VEGF), the dominant pro-angiogenic cytokine, have been dev...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2018047
更新日期：2019-03-01 00:00:00
