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 10(7) neutrons cm-2 s-1, 8 MW reactor power, 8.2 cGy/min) for 5, 10 or 20 min. The brains were examined histologically 8 h after irradiation. In animals irradiated for 5 to 10 min (41 and 82 cGy-Eq, respectively) lethal damage of cells was found in the external granular layer of the cerebellum and the subependymal layer of the forebrain. Irradiation for 20 min (164 cGy-Eq) caused more extensive destruction of cell populations in these regions and, in addition, dead cells appeared also in the more differentiated postmitotic compartments, namely the deeper layers of the cerebellum, layers II/III of the cerebral cortex and corpus callosum. In the forebrain periventricular layer, the extent of cell damage was declining towards the olfactory bulbs. In intact animals, as well as in those injected only with the 150 microl phosphate buffered saline, the radiation damage was low and limited only to the most sensitive dividing populations of the cerebellum and the forebrain. The study demonstrates a differentiation-dependent damage of the rat brain cells by alpha particles and presents a simple model for evaluation of the biological effectiveness of slow neutron beams constructed for neutron-capture therapy of tumors.
journal_name
Physiol Resjournal_title
Physiological researchauthors
Mares V,Lisá V,Bacáková L,Burian Jsubject
Has Abstractpub_date
1997-01-01 00:00:00pages
101-6issue
2eissn
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：:It has been reported that the major function of the sterol regulatory element binding protein 2 (SREBP-2) is to activate preferentially cholesterol biosynthesis in liver and adipose tissue rather than fatty acid synthesis. In the current study, we analyzed the effects of overexpression of human dominant-positive SREBP...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932751
更新日期：2014-01-01 00:00:00
abstract：:Chronic kidney disease adversely affects the structure and metabolism of bone tissue, which may be a result of disturbed biochemical processes in adipose tissue. Renal replacement therapy is a life-saving therapy but it does not restore all metabolic functions and sometimes even escalates some disturbances. The study ...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.934118
更新日期：2019-12-30 00:00:00
abstract：:Impaired cerebrovascular reactivity (CVR), an important risk factor for future stroke, is affected by a presence carotid stenosis. However, in some cases CVR can be impaired in the absence of carotid stenosis due to several poorly characterized mechanisms. We hypothesized that arterial stiffening as observed in corona...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932837
更新日期：2015-01-01 00:00:00
abstract：:Salivary cortisol reflects the free fraction of serum cortisol. Monitoring salivary cortisol may be a promising alternative method for assessing serum cortisol in some clinical situations. We aimed to compare the reliability of salivary vs. serum cortisol during ACTH test. 84 subjects (mean age 63.2; 24-89 years; n=66...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932611
更新日期：2014-01-01 00:00:00
abstract：:Autoimmune endocrinopathies can be divided according to the presence of organ specific autoantibodies and according to the clinical manifestations into isolated autoimmune endocrinopathies, autoimmune polyglandular syndromes (APS) and polyglandular activation of autoimmunity (PAA). Many factors take part in the develo...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2003-01-01 00:00:00
abstract：:Vascular aging is associated with both structural and functional changes that can take place at the level of the endothelium, vascular smooth muscle cells and the extracellular matrix of blood vessels. With regard to the endothelium, reduced vasodilatation in response to agonists occurs in large conduit arteries as we...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：
更新日期：2000-01-01 00:00:00
abstract：:Brain imaging studies suggest localization of verbal working memory in the left dorsolateral prefrontal cortex (DLPFC) while face processing and memory is localized in the inferior temporal cortex and other brain areas. The goal of this study was to assess the effect of left DLPFC low-frequency repetitive transcranial...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:To predict more precisely the effect of stobadine, a pyridoindole antioxidant agent, in the whole organism, we studied its effect on opsonized zymosan-stimulated free radical generation in whole blood, on superoxide generation in the mixture of PMNL : platelets (1:50), as well as on superoxide generation and myelopero...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:It is believed that omentin is secreted by stromal cells of adipose tissue and modulates insulin sensitivity. Data from a few studies have shown lower serum omentin in obese children and higher in anorexia nervosa. However, to date, there is lack of research on serum omentin concentrations in adolescent patients in a ...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932841
更新日期：2015-01-01 00:00:00
abstract：:It was recognized that recombinant inbred strains are a very powerful system for the study of the genetics of hypertension, linkage analysis and gene mapping. Such set of recombinant inbred strains has been developed in the cooperation of Prof V. Kren and Dr. M. Pravenec in Prague. These recombinant inbred strains wer...
journal_title：Physiological research
pub_type： 社论
doi：
更新日期：1993-01-01 00:00:00
abstract：:Ferritin and increased iron stores first appeared on the list of cardiovascular risk factors more than 30 years ago and their causal role in the pathogenesis of atherosclerosis has been heavily discussed since the early 1990s. It seems that besides traditional factors such as hyperlipoproteinemia, hypertension, diabet...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：10.33549/physiolres.933589
更新日期：2017-04-05 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：: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
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journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2004-01-01 00:00:00
abstract：:This study was undertaken to investigate the effects of lower body positive pressure (LBPP) on cardiovascular responses during a 15-min walking trial in young (22.1+/-0.4 years) and elderly women (67.8+/-1.1 years). The application of 20 mm Hg LBPP reduced ground reaction forces by 31.2+/-0.5 kgw in both groups. We hy...
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932459
更新日期：2013-01-01 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：:K(+)-p-nitrophenylphosphatase (K(+)pNPPase) is the enzyme, which is considered to be involved in K(+)-dependent hydrolysis of the phosphoenzyme in the reaction cycle of Na(+), K(+)ATPase. The aim of our present study was to characterize some features of K(+)pNPPase in homogenates of the rat brain and liver. We determi...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2009-01-01 00:00:00
abstract：:In this study we investigated the effect of beta-glucan derived from Saccharomyces cerevisiae on fungicidal activity, cytokine production and natural killer activity. Spleen and peritoneal cells from female C57BL/6 mice, previously injected (24 or 48 h) with 20 or 100 microg of glucan by i.p. route, were assayed. In v...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2005-01-01 00:00:00
abstract：:Leptin and adiponectin, two adipocytokines, may work together in regulating energy homeostasis and insulin action. Leptin gene expression has been investigated in term placental tissue complicated by gestational diabetes mellitus (GDM), but never in conjunction with all isoforms of the leptin receptor (LEPR A-D), or w...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2006-01-01 00:00:00
abstract：:Gain-of-function (GOF) mutations in ion channels are rare events, which lead to increased agonist sensitivity or altered gating properties, and may render the channel constitutively active. Uncovering and following characterization of such mutants contribute substantially to the understanding of the molecular basis of...
journal_title：Physiological research
pub_type： 杂志文章,评审
doi：10.33549/physiolres.932658
更新日期：2014-01-01 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：:It is believed that atherogenesis is a multifactorial process, which could already start in utero. Development of atherosclerosis progresses over decades and leads to the cardiovascular morbidity and mortality in adulthood. At present, we have no exact explanation for all the risk factors acting in the pathogenesis of...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2003-01-01 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：:Intrauterine and perinatal life are critical periods for programming of cardiometabolic diseases. However, their relative role remains controversial. We aimed to assess, at weaning, sex-dependent alterations induced by fetal or postnatal nutritional interventions on key organs for metabolic and cardiovascular control....
journal_title：Physiological research
pub_type： 杂志文章
doi：10.33549/physiolres.932811
更新日期：2015-01-01 00:00:00
abstract：:The lymphatic bioavailability (FL) of diazepam (DZ) and its major metabolite desmethyldiazepam (DDZ) was studied. DZ was administered in intravenous and intraduodenal boluses, and in intravenous infusion in three groups of rats with different total lipid (TL) content in the central lymph. The effect of a) different li...
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 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：: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：:Extensive osteolysis adjacent to orthopedic implants is often associated with wear particles of prosthetic material. The activation of the RANKL/RANK/OPG system is considered to be a likely cause of periprosthetic osteolysis leading to implant failure. The aim of this study was to examine the possible correlation betw...
journal_title：Physiological research
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
