Abstract:
:We studied the effect of succinic acid on the process of glucuronidation of 2-ethyl-6-methyl-3-hydroxypyridine after peroral and intraperitoneal administration in the form of succinate or a base. Since the basic form of 2-ethyl-6-methyl-3-hydroxypyridine is insoluble in water, it was administered in 5% Tween-80. It was necessary to evaluate also the effect of Tween-80 on glucuronidation of 2-ethyl-6-methyl-3-hydroxypyridine in different administration routes. Quantitative assay of glucuronidated fractions was performed by the method of reversed-phase HPLC with fluorometrical detection. The detection limit for this method was 10 ng/ml. We confirmed that the major excretion pathway for 2-ethyl-6-methyl-3-hydroxypyridine is conjugation with glucuronic acid. It was found that succinic acid increased excretion of glucuronidated metabolite after both peroral and intraperitoneal administration of 2-ethyl-6-methyl-3-hydroxypyridine in the form of succinate and base in 5% Tween-80. The effect of Tween-80 was detected only after peroral administration, which was probably related to its effect on absorption of this compound. Tween-80 increased excretion of glucuronate after peroral administration of 2-ethyl-6-methyl-3-hydroxypyridine in the form of succinate and in 5% Tween solution.
journal_name
Bull Exp Biol Medjournal_title
Bulletin of experimental biology and medicineauthors
Baranov PA,Kravtsova OU,Sariev AK,Sherdev VPdoi
10.1007/s10517-008-0205-4subject
Has Abstractpub_date
2008-07-01 00:00:00pages
56-8issue
1eissn
0007-4888issn
1573-8221pii
doijournal_volume
146pub_type
杂志文章abstract::Micro- and nanomolar concentrations of ganglioside GM1 improved viability of neuronal PC12 cells under conditions of oxidative stress and reduced H2O2-induced ROS accumulation in these cells. These effects were more pronounced at micromolar concentrations. GM1 in concentrations of 100 nM and 10 μM significantly and su...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-015-3026-2
更新日期:2015-09-01 00:00:00
abstract::We studied the influence of pretreatment with chemical mildronate analogue sibusol on the course of experimental gastric ulcer in rats. Sibusol produced a protective effects on the stomach and duodenum. ...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1023/b:bebm.0000024380.24282.0b
更新日期:2004-01-01 00:00:00
abstract::Viability of keratinocytes of HaCaT immortalized line incubated with sodium dodecyl sulfate for 3 min, 1 and 48 h, was studied by light microscopy, MTT test, and neutral red absorption test. The IC50 values were determined for each of the studied lengths of exposure. HaCaT cells exhibited a dose-dependent decrease of ...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-017-3785-z
更新日期:2017-06-01 00:00:00
abstract::The relationship between dromotropic and chronotropic components of various cardiac reflexes was studied in cats. Intravenous infusion of blood was mainly accompanied by unidirectional negative chronotropic and dromotropic effects, but the dynamics of these effects was different. Clumping of the carotid arteries in mo...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-008-0041-6
更新日期:2008-02-01 00:00:00
abstract::We studied the content of corticosterone and its precursors in the adrenal glands, corticosterone in blood serum and daily urine of rats, and activity of first and second isoforms of 11β-hydroxysteroid dehydrogenase in the liver and kidneys of rats after 15 daily intraperitoneal injections of 0.9% NaCl or glucocortico...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-016-3390-6
更新日期:2016-06-01 00:00:00
abstract::The distribution of polymorphic variants of innate immunity genes TLR9 (+2848G>A) and DEFB1(-20G>A; -44C>G; -52G>A) was evaluated in long-living individuals. No significant differences were found in the distribution of genotypes and alleles of the TLR9 gene. The following features were revealed: increase in the freque...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-015-2894-9
更新日期:2015-05-01 00:00:00
abstract::The effects of neural progenitor and hemopoietic stem cells on C6 glioma cells were studied in in vivo and in vitro experiments. Considerable inhibition of proliferation during co-culturing of glioma cells with neural progenitor cells was revealed by quantitative MTT test and bromodeoxyuridine incorporation test. Labe...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-012-1562-6
更新日期:2012-02-01 00:00:00
abstract::Interleukin-1beta mRNA, interleukin-1beta receptor mRNA, and erythropoietin receptor mRNA are expressed in the brain of (CBAxC57Bl)F1 mice. Immunization with sheep erythrocytes stimulated the expression of these cytokines in the cerebral hemispheres. Injection of recombinant erythropoietin reduced expression of interl...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1023/a:1015112729103
更新日期:2002-01-01 00:00:00
abstract::Newborn rats received intraperitoneal injections of endothelin-1 in a daily dose of 5 x 10(-8)mol/kg 30 min after administration of NG-nitro-L-arginine methyl ester (9.3 x 10(-5)mol/kg intraperitoneally) from the 2nd to 6th day of life. NADPH diaphorase activity in epithelial and smooth muscle cells of the tracheobron...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1023/a:1015826415361
更新日期:2002-03-01 00:00:00
abstract::The role of signaling molecules in synthesis of humoral regulators of granulocytopoiesis by the hematopoietic microenvironmental cells during stress was analyzed using specific inhibitors. The major role in stimulation of the synthesis of granulocytic CSF during stressful stimulation is played by PI3K/Akt signaling ca...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-019-04347-w
更新日期:2019-01-01 00:00:00
abstract::cDNA encoding VEGF and Ig-like extracellular domains 2-4 of VEGFR-1 (sFlt-1(2-4)) were cloned into prokaryotic expression vectors pET32a and pQE60. Recombinant proteins were purified (metal affinity chromatography) and renatured. Chemiluminescent study for the interaction of recombinant VEGF and sFlt-1(2-4) showed tha...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-012-1612-0
更新日期:2012-04-01 00:00:00
abstract::We studied the incidence of chromosome aberrations in bone marrow cells and primary spermatocytes in various mouse strains. Experiments were performed on SAMP mice (accelerated aging), control SAMR mice, and long-living CBA and SHR mice. Experiments revealed a positive correlation between the age and the incidence of ...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1023/a:1017940418751
更新日期:2001-05-01 00:00:00
abstract::We performed immunohistochemical analysis of the expression of TGFβ, galectin-1, vimentin, and thrombospondin in the mucosa in gastric cancer of diffuse and intestinal type associated with systemic undifferentiated connective tissue dysplasia. In diffuse gastric cancer, both with and without association with connectiv...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-019-04438-8
更新日期:2019-04-01 00:00:00
abstract::We studied the effect of carbon monoxide (60-, 75-, and 90-min exposure) on the expression of antiapoptotic proteins (survivin and Bcl-2) in human blood lymphocytes in the presence of recombinant IL-2 in an apoptosis-inducing dose (0.1 ng/ml). Incubation of cells in atmosphere with carbon monoxide in the presence of r...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-017-3616-2
更新日期:2017-01-01 00:00:00
abstract::Plasma γ-globulin fraction proteins, copper and zinc cations, and metal complexes formed by these cations and human serum γ-globulin induce blast transformation of splenocytes from BALB/c mice at a level comparable to that induced by concanavalin A. Zinc bound to γ-globulin reduces by 25% and copper in complex with th...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-011-1206-2
更新日期:2011-03-01 00:00:00
abstract::We analyzed association of potentially regulatory polymorphisms (rs590352, rs11542583, rs3829202, rs207258, and rs4796672) with breast cancer. A significant association was found between this disease and rs2072580T>A (p=0.001) located in the overlapping promoter regions of the SART3 and ISCU genes. In women with AA an...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-020-04829-2
更新日期:2020-05-01 00:00:00
abstract::Metabolic processes in the brain cortex of albino rats with prenatal and postnatal alcohol intoxication were studied by the method of electron paramagnetic resonance. Accumulation of superoxide radical-generating agents, inactivation of superoxide dismutase, and increase in nitric oxide concentration were detected. Ac...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-006-0347-1
更新日期:2006-09-01 00:00:00
abstract::Experiments on rats showed that the lymphoprotective effect of Perftoran manifests in stimulation of contractile activity of myocytes in the wall and valve cusps of lymphatic microvessels, which in turn activates the pump and capacitive functions of the lymphatic system and improves central lymph outflow. These change...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-010-1036-7
更新日期:2010-11-01 00:00:00
abstract::More than 70% malignant mammary tumors contain steroid hormone receptors; this suggests the possibility of hormone therapy in the majority of patients with breast cancer (BC). The main cause of inefficiency of hormone therapy in BC is hormone resistance (tumor resistance to hormonal cytostatics). Here we discuss the m...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-013-2160-y
更新日期:2013-07-01 00:00:00
abstract::The content of hemopoietic precursors in the bone marrow, its morphological composition, production of hemopoietic growth factors by cells of the hemopoietic microenvironment, erythropoietic activity, and plasma content of endogenous erythropoietin were studied in CBA/CaLac mice with hypoplasia of hemopoiesis induced ...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1023/a:1025469000276
更新日期:2003-06-01 00:00:00
abstract::We studied plus-maze behavior of inbred Krushinskii-Molodkina, Wistar, and black-hooded rats (originating from the Long-Evans outbred strain) differing by predisposition to audiogenic seizures. The severity of audiogenic seizures partially correlated with anxiety and negatively correlated with the total level of locom...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-011-1256-5
更新日期:2011-05-01 00:00:00
abstract::We studied the effect of adrenal cortex hormone dehydroepiandrosterone sulfate on maturation and functional activity of interferon-alpha-induced dendritic cells. Dehydroepiandrosterone sulfate stimulated differentiation and maturation of interferon-alpha-induced dendritic cell, which manifested in a decrease in the nu...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-009-0619-7
更新日期:2009-07-01 00:00:00
abstract::We studied the effect of leukemia-inhibiting factor on bilayer lipid membranes. Leukemia-inhibiting factor in a concentration of 10 ng/ml nonspecifically increased membrane permeability for ions. Leukemia-inhibiting factor acts as a surface-active substance on bilayer lipid membranes. ...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1023/a:1022944608428
更新日期:2002-12-01 00:00:00
abstract::The time course of angiotensin-converting enzyme activity in the rat aorta after fractionated exposure to ionizing radiation and the effects of dihydroquercetin and fucoidin on this parameter were studied. Male Wistar rats were exposed to single or repeated (fractionated) X-ray radiation in a dose of 2.5 Gy at 200 kV....
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-018-4170-2
更新日期:2018-07-01 00:00:00
abstract::The effect of laser radiation on generation of reactive oxygen species in the whole blood from patients with chronic obstructive pulmonary disease was studied by in vitro recording of luminol-dependent chemiluminescence. Laser irradiation of the blood from patients with increased production of reactive oxygen species ...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-007-0299-0
更新日期:2007-08-01 00:00:00
abstract::The efficiency of drug therapy should be evaluated by not only its directed action on specific organ or target parameter, but also its effects on general regulatory and adaptive status. ...
journal_title:Bulletin of experimental biology and medicine
pub_type: 临床试验,杂志文章
doi:10.1007/s10517-008-0195-2
更新日期:2008-06-01 00:00:00
abstract::Local application of ointment with Bacillus spp. strain MG8 (15,000-20,000 living bacterial cells), isolated from permafrost specimens, on the skin wound of about 60 mm(2) stimulated the reparation processes in experimental mice. A possible mechanism stimulating the regeneration of the damaged tissues under the effect...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-015-2789-9
更新日期:2015-02-01 00:00:00
abstract::Muramyl dipeptide β-heptylglycoside (C7MDP) was administered to non-pregnant CBA female mice and pregnant mice after non-abortion-prone mating (CBA×BALB/c) and mating associated with a high rate of spontaneous abortion (CBA×DBA/2). In non-pregnant females, C7MDP increased the production of IL-2, IL-4, IL-5, IL-6, IL-1...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-015-2888-7
更新日期:2015-05-01 00:00:00
abstract::hyperthermia caused hemodynamic disorders in the liver and degenerative and necrobiotic changes in hepatocytes of CBA mice. Total hepatocyte count decreased during restitution, this decrease being most pronounced 30 min after exposure. The number of binucleated cells also markedly decreased. The absence of necrotic ch...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
abstract::Dehydration was accompanied by cell changes in solitary lymphoid nodules and Peyer's patches. The proportion between lymphocytes, macrophages, and mast cells in lymphoid organs depended on the stage of dehydration. The inhibition of cell mitoses, disappearance of mature plasma cells and mast cells (per field of view),...
journal_title:Bulletin of experimental biology and medicine
pub_type: 杂志文章
doi:10.1007/s10517-008-0187-2
更新日期:2008-06-01 00:00:00