Abstract：
:We have recently demonstrated that the combined administration of dipyridamole and adenosine monophospate to mice induces radioprotective effects in terms of postirradiation haemopoietic recovery in animals irradiated with a single dose. The aim of the present experiments was to investigate the radioprotective ability of the drug combination under conditions of fractionated radiation treatment. It has been shown that administration of drugs either 15 or 60 min before each of the five daily 3-Gy doses of gamma-radiation enhances haemopoietic recovery and survival of mice exposed to an additional "top-up" dose of 3.5 Gy. Furthermore, it has been ascertained that the regimen using administration of the drugs 60 min prior to irradiation is more effective than administration of the drugs 15 min prior to irradiation. Due to the evidence that administration of the drugs 15 min prior to irradiation protects the organism mainly via mechanisms of systemic hypoxia while the pretreatment 60 min before irradiation avoids the role of hypoxia and mainly induces cell proliferation effects, our results suggest a more effective protective role of mechanisms stimulating haemopoiesis under conditions of fractionated radiation. The data may provide a basis for more rational use of radioprotection in fractionated radiation regimens.
journal_name
Physiol Resjournal_title
Physiological researchauthors
Hofer M,Pospísil M,Netíková J,Znojil V,Vácha J,Holá Jsubject
Has Abstractpub_date
1995-01-01 00:00:00pages
93-98issue
2eissn
0862-8408issn
1802-9973journal_volume
44pub_type
杂志文章abstract：:We measured plasma concentrations, adipose tissue and placental mRNA expression of hepatokines fetuin A, fetuin B and fibroblast growth factor 21 (FGF21) in 12 healthy pregnant women (P group), 12 pregnant women with gestational diabetes (GDM) and 10 healthy non-pregnant women (N group) to explore their potential role...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.934017
更新日期：2018-11-28 00:00:00
abstract：:Expression of the immediate-early gene c-fos, a marker of neuronal activation was employed in adult anesthetized non-decerebrate cats, in order to localize the brainstem neuronal populations functionally related to sniff-like (gasp-like) aspiration reflex (AR). Tissues were immunoprocessed using an antibody raised aga...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:The influence of a subconvulsant dose of kainic acid (KA) on the activity of neurons was studied in the sensorimotor cortical area of urethane-anesthetized rats. A total of 41 neurons was recorded, 38 of these in layer V (probably pyramidal cells). The activity of 18 neurons was recorded before as well as more than 30...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1999-01-01 00:00:00
abstract：:Stomach lesions induced by indomethacin (20 mg.kg-1 i.p.) and ethanol (1 ml 95% intragastrically) were studied after a 24 hour fast in rats which had undergone sialoadenectomy. The size of the lesions was correlated with gastric HCl secretion, with gastric vascular permeability (determined from the Evans blue concentr...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:Recently an expert consensus document advised to standardize user procedures and a new cut-off value for carotid-femoral pulse wave velocity in daily practice. Our aim was to observe aortic pulse wave velocity (PWVao) and augmentation index (AIXao) in two high cardiovascular risk groups: patients with verified coronar...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932524
更新日期：2014-01-01 00:00:00
abstract：:The present study was performed to evaluate the role of neuronal nitric oxide synthase (nNOS)-derived nitric oxide (NO) during the developmental phase of hypertension in transgenic rats harboring the mouse Ren-2 renin gene (TGR). The first aim of the present study was to examine nNOS mRNA expression in the renal corte...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2002-01-01 00:00:00
abstract：:No data are available about the effects of AT1 receptor antagonist losartan on the skeleton and there is also little information on the activity of an ACE inhibitor enalapril on bone metabolism. It is widely believed that the vasculature plays an important role in bone remodeling under normal and pathological conditio...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：:MiRNAs are important regulators of gene expression and changes in their levels are linked with various pathological states, including solid tumors. MiR-215 has been identified as a tumor suppressor in colorectal cancer (CRC). Following our previous in vitro and in vivo experiments, the aim of this project was to study...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933546
更新日期：2016-12-21 00:00:00
abstract：:Pattern of right ventricular pressure (RVP) fall and its afterload dependence were examined by analyzing ventricular pressure curves and corresponding pressure dP/dt phase planes obtained in both ventricles in the rat heart in situ. Time and value of dP/dt(min), and the time constant tau were measured at baseline and ...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:The present study investigated the effects of head cooling during endurance cycling on performance and the serotonergic neuroendocrine response to exercise in the heat. Subjects exercised at 75 % VO(2max) to volitional fatigue on a cycle ergometer at an ambient temperature of 29+/-1.0 degrees C, with a relative humidi...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2008-01-01 00:00:00
abstract：:The haemolytic action of HgCl2 (0, 15 mmol.l-1) was studied in relation to the ionic strength and concentration of glucose and saccharose in incubating medium. Blood from 94 donors, aged 19-46 years were used in our experiments. In relation to the ionic strength the haemolytic action was characteristic with two maxima...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1992-01-01 00:00:00
abstract：:The global epidemic of diabetes is of significant concern. Diabetes associated vascular disease signifies the principal cause of morbidity and mortality in diabetic patients. It is also the most rapidly increasing risk factor for cognitive impairment, a silent disease that causes loss of creativity, productivity, and ...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：10.33549/physiolres.933833
更新日期：2018-06-27 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：:Gestational diabetes mellitus (GDM) and polycystic ovary syndrome (PCOS) are distinct pathologies with impaired insulin sensitivity as a common feature. The aim of this study was to evaluate the response of fat tissue adipokines and gastrointestinal incretins to glucose load in patients diagnosed with one of the two d...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933366
更新日期：2017-05-04 00:00:00
abstract：:T-2 toxin and its metabolite HT-2 toxin are one of the most toxic mycotoxins of type A-trichothecenes, which are produced mainly by Fusarium species. Therefore, study of Fusarium toxins T-2 toxin and HT-2 toxin is an essential issue because they could also play role in failures of reproductive functions as well as end...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933610
更新日期：2017-09-22 00:00:00
abstract：:The aim of the present study was to determine the optimal initial tension, i.e. initial stretch for rat coronary artery when using the multi-wire myograph system. We used the normalization procedure to mimic physiological conditions and to stretch the coronary arterial segments to normalized internal circumference (IC...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932631
更新日期：2014-01-01 00:00:00
abstract：:Monoaminergic neurotransmitter 5-hydroxytryptamine (5-HT), also known as serotonin, plays important roles in modulating the function of the olfactory system. However, thus far, the knowledge about 5-HT and its receptors in olfactory receptor neurons (ORNs) and their physiological role have not been fully characterized...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932413
更新日期：2013-01-01 00:00:00
abstract：:Pregnant rats were exposed to intermittent hypobaric hypoxia (at a simulated altitude of 7000 m or 5000 m) and the excitability of cortical neurons of their pups was tested. Stimulation of the sensorimotor cortex of rats prenatally exposed to hypoxia shortened the duration of cortical afterdischarges in 12-day-old rat...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2001-01-01 00:00:00
abstract：:The concept of vena contracta space reduction in tricuspid valve position was tested in an animal model. Feasibility of specific artificial obturator body (REMOT) fixed to the right ventricular apex and interacting with tricuspid valve leaflets was evaluated in three different animal studies. Catheter-based technique ...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932580
更新日期：2014-01-01 00:00:00
abstract：:The effects of inclusion of sesamin / episesamin in Baltic Atlantic salmon (Salmo salar L.) diets based on vegetable oils were studied. The study was designed as a dose response study with two control diets, one diet based on fish oil (FO) and one diet based on a mixture of linseed and sunflower oil (6:4 by vol.) (MO)...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932068
更新日期：2011-01-01 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：:Sodium borocaptate (BSH, Na2Bl2HllSH), a slow neutron-capture compound, was injected into the left forebrain ventricle of 1-week-old rats (150 microg BSH/3 microl phosphate buffered saline). After 90 min, the animals were irradiated by epithermal neutrons (LVR-15 nuclear reactor in Rez near Prague, flux density 8.8 x ...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1997-01-01 00:00:00
abstract：:The presence of insulin resistance is frequently found in essential hypertension. There are, however, only sparse data with respect to the potential presence of insulin resistance in patients with secondary hypertension. We have therefore undertaken a study to reveal the potential occurrence of insulin resistance in p...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2000-01-01 00:00:00
abstract：:Aquaporin proteins (AQPs) are a family of channels expressed in numerous mammalian tissues, where they play a fundamental role in regulating water transport across cell membranes. Based on reports that AQPs are present in the reproductive system and participate in reproductive processes, our aim was to investigate the...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.933095
更新日期：2016-11-08 00:00:00
abstract：:Osteoporotic fractures are the result of low density and especially inferior bone quality (microarchitecture) caused by both internal (genes, hormones) and external (life style) influences. Bone mechanosensors are extremely important for the overall integrity of the skeleton, because in response to mechanical load the...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：
更新日期：2008-01-01 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：:Data concerning the effect of NO on the function and structure of the heart are controversial. We have studied two main questions: (i) Does the heart muscle reflect the hypertension induced by long-term inhibition of NO synthase? (ii) Since the arginine-NO pathway is also operative in the autonomic nervous system, the...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：1996-01-01 00:00:00
abstract：:We investigated whether polyethylene glycol-coated Fe3O4 nanoparticles (IONs), acute stress and their combination modifies vascular functions, nitric oxide synthase (NOS) activity, mean arterial pressure (MAP) as well as hepcidin and ferritin H gene expressions in Wistar-Kyoto rats. Rats were divided into control, ION...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.934567
更新日期：2020-12-22 00:00:00
abstract：:The effect of oral supplementation with glycosaminoglycans (GAG) and radical scavengers (vitamin E/selenium) on the regeneration of osteochondral defects was investigated in rabbits. After introduction of defined osteochondral defects in the knee joint, groups of ten animals were given a GAG/vitamin E/selenium mixture...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
abstract：:Cancer therapy with daunorubicin is limited by its cardiotoxicity. It has been suggested that daunorubicin-induced free radical generation can be involved. The precise molecular mechanism of daunorubicin-induced cardiotoxicity is still not well understood but it is believed that mitochondria play an important role in ...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
