Abstract：
:Recent findings suggest that polymorphisms in vitamin D pathway genes are candidates for association with multiple sclerosis susceptibility. It has been now well demonstrated that vitamin D has immunomodulatory functions that may be favorable for reduction of multiple sclerosis risk. Current research has been focused on identification of new variants of genes involved in vitamin D pathway, namely in vitamin D receptor and enzymes of vitamin D metabolism. These variants have been intensively studied as possible genetic predictors of both vitamin D levels and the risk of multiple sclerosis. Considering the findings available up-to-date, we may recognize two groups of genetic variants. The first group of genes was found to predict vitamin D levels but not the risk of multiple sclerosis. The second group of genetic variants is represented by promising genes predicting vitamin D levels as well as the risk of multiple sclerosis. A strong association with increased risk of the disease has been observed for a rare variant in the CYP27B1 gene encoding a vitamin D-activating enzyme. Observed interaction between genetic and epidemiological findings brings the rationale for supplementation trials of vitamin D. Although promising effects of vitamin D supplementation have emerged, the results obtained so far are inconclusive and the real therapeutic significance of vitamin D supplementation remains to be elucidated.
journal_name
Gen Physiol Biophysjournal_title
General physiology and biophysicsauthors
Krizova L,Kollar B,Jezova D,Turcani Pdoi
10.4149/gpb_2013067subject
Has Abstractpub_date
2013-12-01 00:00:00pages
459-66issue
4eissn
0231-5882issn
1338-4325journal_volume
32pub_type
杂志文章,评审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：:The hydrolytic activity and interaction of acidic and neutral phospholipase A2 (PLA2) with large unilamellar liposomes treated with cobra venom cytotoxin Vc5 (CT Vc5) were studied to more fully understand the modulating effects of cationic membrane-active peptides on PLA2. Studies were done by fluorescence displacemen...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1995-04-01 00:00:00
abstract：:Changes in the Young elasticity modulus in perpendicular direction to the membrane surface E perpendicular, in the coefficient of dynamic viscosity eta, in the electric capacitance C, in the surface charge U1, in the conductivity g and in the coefficient of non-linearity beta of current-voltage characteristic caused b...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1987-04-01 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
abstract：:Environmental exposure to modern microwave telecommunication electromagnetic fields (EMFs) has increased to unprecedented levels with consequent health complaints and concerns. Many studies have already reported genotoxic effects on a variety of organisms and cell/tissue types. Human peripheral blood lymphocytes from ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2019032
更新日期：2019-09-01 00:00:00
abstract：:In this study possible connection between radiofrequency exposure (RF) and development of oxidative stress was investigated by measuring impairment in cellular oxidation-reduction balance immediately after RF exposure. Fibroblast cells V79 were exposed for 10, 30 and 60 minutes to 1800 MHz RF radiation. Electric field...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2017007
更新日期：2017-10-01 00:00:00
abstract：:Cytochrome P-450 and NADPH: cytochrome P-450 reductase were solubilized by detergents from microsomal fraction of tulip bulbs Tulipa fosteriana L. and purified to electrophoretic homogeneity. The purification was achieved by anion-exchange column chromatography, hydroxyapatite-column chromatography and affinity chroma...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1994-04-01 00:00:00
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 effect of K+ and Na+ on the properties of DNA aptamers that selective binds to fibrinogen (FIBRI) and heparin (HEPA) exosites of human alpha-thrombin was studied by circular dichroism (CD). The complexes of FIBRI-K+ were slightly more stable than HEPA-K+. However, lower stability was observed for HEPA-K+ at presen...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：2008-12-01 00:00:00
abstract：:The hormone leptin, by binding to hypothalamic receptors, suppresses food intake and decreases body adiposity. Leptin receptors are also widely expressed in extra-hypothalamic areas such as hippocampus, amygdala and cerebellum, where leptin modulates synaptic transmission. Here we show that a defective leptin receptor...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2013056
更新日期：2014-01-01 00:00:00
abstract：:Sleep is considered as a physiological regulator in the body. Gamma-aminobutyric acid (GABA) is a neurotransmitter that modulates sleep and affects cardiac functions. We evaluated effects of acute sleep deprivation (SD) on cardiac hemodynamic parameters, expression of pro-inflammatory cytokines, and Heat shock protein...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2017049
更新日期：2018-05-01 00:00:00
abstract：:Tissue intermittent hypoxia (IH) occurs in obstructive sleep apnea, sickle cell anemia, physical exercise and other conditions. Poor gas solubility and slow diffusion through culture media hampers mimicking IH-induced transitions of O(2) in vitro. We aimed to develop a system enabling exposure of cultured cells to IH ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2014043
更新日期：2015-07-01 00:00:00
abstract：:This study investigated the noradrenergic contribution during the cutaneous vasoconstrictor response to local cooling in the leg and forearm. On each limb, one site was perfused with Yoh/Prop to block the postsynaptic adrenoceptors and another with Lactated Ringer's (control) using microdialysis. Blood flow was measur...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2017021
更新日期：2018-01-01 00:00:00
abstract：:It is well known that in vitro storage lesions lead to membrane dysfunction and decreased number of functional erythrocytes. As erythrocytes get older, in storage media as well as in peripheral circulation, they undergo a variety of biochemical changes. In our study, the erythrocytes with different age groups in citra...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2016001
更新日期：2016-07-01 00:00:00
abstract：:In this study, we investigated the role of AMP-activated protein kinase (AMPK) and the importance of reactive oxygen species (ROS) in apoptosis induction associated with cell cycle arrest induced by sulforaphane in AGS human gastric cancer cells. Our results demonstrated that sulforaphane inhibited proliferation of AG...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2017026
更新日期：2018-03-01 00:00:00
abstract：:Arterial base deficit/excess (BD/E) is commonly used marker of metabolic acidosis in critically ill patients, but requires an arterial puncture and blood gas analysis. We hypothesized that serum bicarbonate (HCO3), which can be routinely obtained, strongly correlates with arterial BD/E and provides equivalent predicti...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：2009-01-01 00:00:00
abstract：:Aquaporin attracted attention not only of physiologists and biophysicists, but also of chemical engineers. Here we critically analyze a paper describing aquaporin-based artificial membranes, suggested for forward osmosis-based water purification (Wang et al. 2012, Small 8, pp. 1185-1190). Related papers published late...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2013058
更新日期：2013-12-01 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：: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：:This study specified the role of several key calcium-operating ion channels in contraction/relaxation of human detrusor muscle as possible target for overactive bladder (OAB) treatment. Detrusor samples, obtained from 18 males (average age 61.5 ± 5.9 years), were investigated by organ tissue bath method with following...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2017064
更新日期：2018-07-01 00:00:00
abstract：:In the present work have been made some modifications of Münch's model, which concerns the explanation of biophysical bases of the problem of transport of water and assimilates. Then, by using the thermodynamic formalism of Kedem and Katchalsky (1958), we have made a mathematical description of the model. On this basi...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1994-02-01 00:00:00
abstract：:Limited numbers of studies include research of microvibration therapy in experimental models. We examined effects of chronic vibroacustic-microvibration treatment on haemodynamics and anti-oxidative defense in experimental hypertension. Study was performed on chronically treated hypertensive and normotensive Wistar ra...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2014033
更新日期：2015-01-01 00:00:00
abstract：:The role of C-type natriuretic peptide (CNP) in the gastrointestinal tract is still unclear. This study was designed to investigate the effect of CNP on barium current (I(Ba)) through the L-type calcium channel in gastric antral myocytes of guinea pigs. The whole-cell patch clamp technique was performed in gastric ant...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：2006-12-01 00:00:00
abstract：:The interactions between haematoporphyrin (HP) and bilayer lipid membranes (BLM) were studied. A weak effect of HP on BLM conductivity was observed at HP concentrations ranging between 10(-6) and 3 x 10(-5) mol/l. Modulus of elasticity in the direction normal to the membrane plane (E perpendicular) and dynamic viscosi...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1992-08-01 00:00:00
abstract：:The ionic composition of intracellular space is rigorously maintained in the expense of high-energy expenditure. It has been recently postulated that the cytoplasmic ionic composition is optimized so the energy cost of the fluctuations of calcium ion concentration is minimized. Specifically, thermodynamic arguments ha...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2016029
更新日期：2017-04-01 00:00:00
abstract：:A mechanical model of heart muscle is proposed which includes rheological equations and equations for Ca-troponin interaction, for the dependences of the number of myosin cross-bridges on the length of sarcomere and on the speed of motion. The main assumption of the model is the dependence of the troponin affinity to ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1990-06-01 00:00:00
abstract：:Hyperglycaemia-induced oxidative stress makes an important contribution to the aetiology of diabetic neuropathy. The aim of our study was to evaluate the effect of the antioxidant stobadine (STB) in comparison with a treatment by a high-dose of alpha-lipoic acid (ALA), on the neurological consequences of chronic hyper...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：2010-03-01 00:00:00
abstract：:Effects of haloperidol on L-type CaV1.2 channel were studied. Calcium current was measured in whole cell patch-clamp using calcium as a charge carrier. Inhibition by haloperidol was investigated in CaV1.2 channel natively expressed in rat cardiac myocytes and recombinant cardiac (CaV1.2a) and vascular (CaV1.2b) splice...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2009_03_249
更新日期：2009-09-01 00:00:00
abstract：:The complex formation between metmyoglobin and heparin was investigated by absorbance and fluorescence spectroscopy as well as differential scanning microcalorimetry. In acidic pH region, three distinct complexes detected by absorbance measurements are formed depending on pH and time of equilibration. The kinetics of ...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：
更新日期：1998-06-01 00:00:00
abstract：:Diabetic cardiomyopathy is a severe complication of diabetes mellitus (DM). The goal of current work was to study the effects of sinomenine on streptozotocin-induced cardiomyopathy in rats. DM in rats was induced by intraperitoneal injection of streptozotocin. Cardiac function was evaluated by measuring left ventricle...
journal_title：General physiology and biophysics
pub_type： 杂志文章
doi：10.4149/gpb_2016033
更新日期：2017-01-01 00:00:00
