Abstract：
:Our study concerned the findings that rat and rabbit heart transplants do not survive after six hours. They become dark, hard and fail to contract within 2 min after reperfusion and never regain their function. We tested the supplementation of solutions for heart transplant preservation with tetrahydrobiopterin (H4B) and L-arginine (L-ARG) to maintain the oxidative and reductive domains of the endocardial NO synthase. We decided to study the excised rabbit hearts preserved in Hank's balanced salt solution (HBSS) at 0 degrees C supplemented with different concentrations of H4B (0, 1, 5, 10 or 100 microM). At desired time intervals, successive pieces stored in the above solutions were warmed to rabbit body temperature in 4 ml of HBSS and maximally agonized by direct application of 20 microl of 200 microM bradykinin (or other agonist) onto the exposed endocardium. Nitric oxide bursts were monitored with a porphyrinic NO sensor lying on the exposed endocardium. Our goal was to find the lowest H4B concentration which would maximally agonize NO. and prolong the time of heart preservation to more than 6 hours. Ten microM are a minimum H4B concentration which achieves maximum prolongation of heart preservation time up to 90 hours. This effect was based upon maximal potentiation of NO. release and minimizing of superoxide production.
journal_name
Physiol Resjournal_title
Physiological researchauthors
Mesáros S,Grunfeld S,Mesárosová A,Malinski Tsubject
Has Abstractpub_date
1997-01-01 00:00:00pages
251-5issue
4eissn
0862-8408issn
1802-9973journal_volume
46pub_type
杂志文章abstract：:An impairment of the survival of mice subjected to whole-body gamma-irradiation with a lethal dose of 10 Gy and treated with a repeated postirradiation administration of prostaglandin synthesis inhibitors (PGSIs), indomethacin or diclofenac, was observed. Morphological examination of the gastrointestinal tract and the...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:We studied the effects of administration of beta-resorcylidene aminoguanidine (RAG) to Wistar strain rats with experimental diabetes mellitus (DM) induced by streptozotocin. The effects studied included antioxidant levels in plasma and the liver, oxidative damage of lipids represented by the formation of substances re...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:The aging process is associated with a decline in mitochondrial functions. Mitochondria dysfunction is involved in initiation and progression of many health problems including neuromuscular, metabolic and cardiovascular diseases. It is well known that endurance exercise improves mitochondrial function, especially in t...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：10.33549/physiolres.933329
更新日期：2017-03-31 00:00:00
abstract：:Sexually mature female Wistar rats were given daily intragastric doses of ethinylestradiol (EE) and levonorgestrel (LE) used normally in women: (1) 0.03 mg EE and 0.05 mg LE; (2) 0.04 mg EE and 0.075 mg LE; (3) 0.03 mg EE and 0.125 mg LE. All groups were treated for 6 months in 5-day cycles (four-day treatment with a ...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:Hyperuricemia has been described as associated with the risk of development metabolic syndrome; however the relationship between the uric acid level and particular parameters of metabolic syndrome remained unclear. We performed a cross-sectional study on a cohort of 833 dyslipidemic patients and correlated their level...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933410
更新日期：2017-07-18 00:00:00
abstract：:Mammalian Meckel´s cartilage is a temporary structure associated with mandible development. Notably, its elimination is not executed by apoptosis, and autophagy was suggested as the major mechanism. Simultaneous reports point to pro-apoptotic caspases as novel participants in autophagic pathways in general. The aim of...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933947
更新日期：2019-03-06 00:00:00
abstract：:The effects of 8-days treatment with 17alpha-estradiol (33.3 microg/kg) and progesterone (1.7 mg/kg) on plasma lipids and fatty acid composition of plasma phospholipids were examined in intact (INT) and bilaterally common carotid arteries occluded (BCO) male Wistar rats. Significant decrease of triglyceride level was ...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932590
更新日期：2014-01-01 00:00:00
abstract：:Mitochondrial dysfunction and oxidative stress participate in the development of diabetic complications, however, the mechanisms of their origin are not entirely clear. Coenzyme Q has an important function in mitochondrial bioenergetics and is also a powerful antioxidant. Coenzyme Q (CoQ) regenerates alpha-tocopherol ...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
abstract：:Dihydrotestosterone (DHT) originates via irreversible reduction of testosterone by catalytic activity of 5alpha-reductase enzyme and it is demonstratively the most effective androgen. Androgens influence adipose tissue in men either directly by stimulation of the androgen receptor or indirectly, after aromatization, b...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：10.33549/physiolres.932080
更新日期：2011-01-01 00:00:00
abstract：:A "pulse like" increase of cytoplasmic calcium concentration, which is proportional to ionophore concentration, is induced in red cells by exposure to A23187. Different Ca2+ levels are attained depending on cellular calcium buffering power and/or primary active calcium transport activation. We examined the effect of A...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1995-01-01 00:00:00
abstract：:The aim of the study was to assess the association between promoter polymorphism [A(-596)G] in interleukin-6 gene and office systolic and diastolic blood pressures, and the heart rate (HR) in apparently healthy Czech subjects. Furthermore, we evaluated the possible influence of gender, BMI and smoking on these suppose...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:Oculometric behaviour assessed by pupil response provides important information about central autonomic activity and emotional regulation. However, studies regarding pupil response to emotional stimuli in adolescent depression are rare. We aimed to study emotional-linked pupil response in adolescent depression. Twenty...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.934359
更新日期：2019-12-20 00:00:00
abstract：:Laboratory rats were exposed to the inhalation of dust from an agglomeration unit which is the greatest contributor to dust pollution in the vicinity of a mercury producing plant. The exposure lasted for 6 months (4 hours daily, 5 days per week), the concentration of aerosol in the chamber was 10 mg x m(-3). After fin...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:Anthropogenic environmental pollutants affect many physiological, biochemical, and endocrine actions as reproduction, metabolism, immunity, behavior and as such can interfere with any aspect of hormone action. Microbiota and their genes, microbiome, a large body of microorganisms, first of all bacteria and co-existing...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.934513
更新日期：2020-09-30 00:00:00
abstract：:In this report, we dealt with ventricular activation abnormalities in 30 patients with previous non-Q myocardial infarction (MI) by means of the CARDIAG 128.1 device, which enables analysis of ECGs, VCGs and body surface potential maps. The diagnosis was verified by left ventriculography, echocardiography and perfusio...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1993-01-01 00:00:00
abstract：:Important fetal and perinatal pathologies, especially intrauterine growth restriction (IUGR), are thought to stem from placental hypoxia-induced vasoconstriction of the fetoplacental vessels, leading to placental hypoperfusion and thus fetal undernutrition. However, the effects of hypoxia on the fetoplacental vessels ...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：
更新日期：2009-01-01 00:00:00
abstract：:Our previous studies concerning the role of furosemide-resistant cation leaks in genetic hypertension demonstrated that blood pressure of recombinant inbred strains (derived from F2 hybrids of spontaneously hypertensive and normotensive Brown Norway rats) cosegregated with inward Na+ leak (determined in saline medium)...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1993-01-01 00:00:00
abstract：:We used a rat model to assess the role of nephrin, podocin, and desmin in the pathogenesis of IgA nephropathy (IgAN). A rat IgAN model was established by administration of BSA, CCl(4), and lipopolysaccharide (LPS) and compared with healthy control rats. Urinary protein, urine red blood cells, and biochemical parameter...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932380
更新日期：2013-01-01 00:00:00
abstract：:Vascular endothelial growth factor (VEGF) has an important role in the pathogenesis of retinopathy of prematurity (ROP) and inhibition of VEGF expression in the neovascular phase might prevent destructive neovascularization in ROP. It is suggested that retinoids exert a highly potent antiangiogenic activity by inhibit...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:We developed a novel behavioral task in which rats learn to recognize the configuration of objects in an animated scene displayed on a computer screen. The scene consisted of a moving bar and a stationary rectangle. Rats deprived of food were trained to press a lever for reward in a small chamber located in front of t...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:Kainic acid (KA) is a potent neurotoxic substance valuable in research of temporal lobe epilepsy. We tested how subconvulsive dose of KA influences spontaneous behavior of adult Wistar rats. Animals were treated with 5 mg/kg of KA and tested in Laboras open field test for one hour in order to evaluate various behavior...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932793
更新日期：2015-01-01 00:00:00
abstract：:The GH4C1 pituitary cell line, an excellent model for a thyroid hormone action study, was used for determination of the relationship between thyroid hormone receptor occupancy and intensity of cell proliferation, prolactin (PRL) production, thyrotropin (TSH) inhibition and 3,5,3,-L-triiodothyronine (T3) receptor down-...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1998-01-01 00:00:00
abstract：:The present study evaluates the protective role of Quercetin (Quer), against immobilization stress- induced anxiety, depression and cognition alteration in mice using behavioral and biochemical parameters. 24 adult Albino mice were distributed into 2 groups vehicle (n=12; 1 ml/kg) and Quer injected (n=12; 20 mg/kg/ml)...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933776
更新日期：2018-11-14 00:00:00
abstract：:The method of cellular immobilization and perfusion was applied to adipocytes. The lipolytic effect of isoprenaline, whose action is produced as a result of receptor-drug interaction, was followed. An agarose solution kept at at 37 degrees C was mixed 1:1 with the cell suspension. Thereafter, adipocytes were immobiliz...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:We determined and characterized the Mg2+-dependent, Ca2+-stimulated ATPase (Ca-ATPase) activity in cell plasma membranes from the myometrium of pregnant women, and compared these characteristics to those of the active Ca2+-transport already demonstrated in this tissue. Similarly to the Ca2+-transport system, the Ca2+-...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
abstract：:A new approach to computer modelling of neuronal stochastic activity is described. The output dynamic activity which depends on the types and the number of input synapses, weights of the synaptic efficacy, the absolute refractory phase duration and threshold level is evaluated on this model in some types of Gaussian i...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:The effects of selenium (Se) on antioxidant defense system in liver and kidneys of rats with cadmium (Cd)-induced toxicity were examined. Cd exposure (15 mg Cd/kg b.m./day as CdCl(2) for 4 weeks) resulted in increased lipid peroxidation (LP) in both organs (p<0.005 and p<0.01). Vitamin C (Vit C) was decreased in the l...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:The purpose of this study was to investigate plasma concentrations of cyclic guanosine monophosphate (cGMP) and atrial natriuretic peptide (ANP) during and after real and simulated space flight. Venous blood was obtained 3 min after the beginning and 2 min after the lower body negative pressure maneuver in two cosmona...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：:The complex demodulation (CD) approach was applied to human EEG recorded during a cognitive task performance, including voluntary goal-directed movements. The standard CD algorithm was extended by a simple procedure using frequency histograms and power spectra to select the characteristic frequencies of EEG segments a...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:Type I diabetes mellitus (DM1) is a complex disease with adverse effects on organs and tissues despite compensation by insulin treatment. The goal of our study was to study how kidney diseases change (31)P MR parameters of muscle metabolism in DM1 patients with respect to gender. 51 DM1 patients (19 m/14 f without and...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933745
更新日期：2018-07-17 00:00:00
