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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shishatskaya E.I., Volova T.G.
Заглавие : A comparative investigation of biodegradable polyhydroxyalkanoate films as matrices for in vitro cell cultures
Место публикации : J. Mater. Sci.-Mater. Med.: KLUWER ACADEMIC PUBL, 2004. - Vol. 15, Is. 8. - С. 915-923. - 9. - ISSN 0957-4530, DOI 10.1023/B:JMSM.0000036280.98763.c1
Примечания : Cited References: 34
Предметные рубрики: DEGRADATION
POLY(3-HYDROXYBUTYRATE)
POLYESTERS
POLYMERS
Аннотация: The paper describes the production and investigation of flexible films made of high-purity polyhydroxyalkanoates (PHAs) - polyhydroxybutyrate [poly-(3HB)] and poly-3-hydroxybutyrate-co-poly-3-hydroxyvalerate [poly(3Hl3-co-3HV)], containing 4-30 mol % hydroxyvalerate. Poly(3HB-co-3HV) films have a more porous structure than poly-(3HB) films, which are more compact, but their surface properties, such as wettability and surface and interface energies, are the same. Sterilisation of the PHA films by conventional methods (heat treatment and gamma-irradiation) did not impair their strength. Cells cultured on PHA films exhibited high levels of cell adhesion. Cell morphology, protein synthesis and DNA synthesis were estimated by extent of H-3-thymidine incorporation into the animal cell cultures of various origins (fibroblasts, endothelium cells, and isolated hepatocytes) in direct contact with PHAs. The investigation showed that this material can be used to make matrices for in vitro proliferous cells. The investigated properties of poly-(3HB) and poly(3HB-co-3HV) films proved to be fundamentally similar. (C) 2004 Kluwer Academic Publishers.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shishatskaya E.I., Volova T.G.
Заглавие : A comparative investigation of biodegradable polyhydroxyalkanoate films as matrices for in vitro cell cultures
Колич.характеристики :9 с
Место публикации : J. Mater. Sci.-Mater. Med.: KLUWER ACADEMIC PUBL, 2004. - Vol. 15, Is. 8. - P915-923. - ISSN 0957-4530, DOI 10.1023/B:JMSM.0000036280.98763.c1
Примечания : Cited References: 34
Предметные рубрики: DEGRADATION
POLY(3-HYDROXYBUTYRATE)
POLYESTERS
POLYMERS
Аннотация: The paper describes the production and investigation of flexible films made of high-purity polyhydroxyalkanoates (PHAs) - polyhydroxybutyrate [poly-(3HB)] and poly-3-hydroxybutyrate-co-poly-3-hydroxyvalerate [poly(3Hl3-co-3HV)], containing 4-30 mol % hydroxyvalerate. Poly(3HB-co-3HV) films have a more porous structure than poly-(3HB) films, which are more compact, but their surface properties, such as wettability and surface and interface energies, are the same. Sterilisation of the PHA films by conventional methods (heat treatment and gamma-irradiation) did not impair their strength. Cells cultured on PHA films exhibited high levels of cell adhesion. Cell morphology, protein synthesis and DNA synthesis were estimated by extent of H-3-thymidine incorporation into the animal cell cultures of various origins (fibroblasts, endothelium cells, and isolated hepatocytes) in direct contact with PHAs. The investigation showed that this material can be used to make matrices for in vitro proliferous cells. The investigated properties of poly-(3HB) and poly(3HB-co-3HV) films proved to be fundamentally similar. (C) 2004 Kluwer Academic Publishers.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : SETKOV N.A., KAZAKOV V.N.
Заглавие : ACTIVATED INVIVO HEPATOCYTES STIMULATE DNA-SYNTHESIS IN THE NUCLEI OF RESTING FIBROBLASTS IN HETEROKARYONS
Колич.характеристики :3 с
Место публикации : DOKLADY AKADEMII NAUK SSSR: MEZHDUNARODNAYA KNIGA, 1992. - Vol. 323, Is. 1. - P162-164. - ISSN 0002-3264
Примечания : Cited References: 5
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Stolyar, Sergey V., Kolenchukova, Oksana A., Boldyreva, Anna V., Kudryasheva, Nadezda S., Gerasimova, Yulia V., Krasikov, Alexandr A., Yaroslavtsev, Roman N., Bayukov, Oleg A., Ladygina, Valentina P., Birukova, Elena A.
Заглавие : Biogenic Ferrihydrite Nanoparticles: Synthesis, Properties In Vitro and In Vivo Testing and the Concentration Effect
Колич.характеристики :18 с
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR); Government of the Krasnoyarsk Territory; Regional Science Foundation [20-416-242907]
Место публикации : Biomedicines: MDPI, 2021. - Vol. 9, Is. 3. - Ст.323. - ISSN 2227-9059(eISSN), DOI 10.3390/biomedicines9030323
Примечания : Cited References:52. - This research was funded by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory and the Regional Science Foundation, grant number 20-416-242907.
Аннотация: Biogenic ferrihydrite nanoparticles were synthesized as a result of the cultivation of Klebsiella oxytoca microorganisms. The distribution of nanoparticles in the body of laboratory animals and the physical properties of the nanoparticles were studied. The synthesized ferrihydrite nanoparticles are superparamagnetic at room temperature, and the characteristic blocking temperature is 23-25 K. The uncompensated moment of ferrihydrite particles was determined to be approximately 200 Bohr magnetons. In vitro testing of different concentrations of ferrihydrite nanoparticles for the functional activity of neutrophilic granulocytes by the chemiluminescence method showed an increase in the release of primary oxygen radicals by blood phagocytes when exposed to a minimum concentration and a decrease in secondary radicals when exposed to a maximum concentration. In vivo testing of ferrihydrite nanoparticles on Wister rats showed that a suspension of ferrihydrite nanoparticles has chronic toxicity, since it causes morphological changes in organs, mainly in the spleen, which are characterized by the accumulation of hemosiderin nanoparticles (stained blue according to Perls). Ferrihydrite can also directly or indirectly stimulate the proliferation and intracellular regeneration of hepatocytes. The partial detection of Perls-positive cells in the liver and kidneys can be explained by the rapid elimination from organs and the high dispersion of the nanomaterial. Thus, it is necessary to carry out studies of these processes at the systemic level, since the introduction of nanoparticles into the body is characterized by adaptive-proliferative processes, accompanied by the development of cell dystrophy and tension of the phagocytic system.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Remmel N.N., Kratasyuk V.A., Maznyak O.M., Inzhevatkin E.V., Nefedov V.P.
Заглавие : Bioluminescent analysis of intensity of pathological oxidative processes in cells of perfused rat liver after hyperthermia
Место публикации : Bulletin of Experimental Biology and Medicine. - 2003. - Vol. 135, Is. 1. - P43-45. - ISSN 00074888 (ISSN) , DOI 10.1023/A:1023489727703
Ключевые слова (''Своб.индексиров.''): bioluminescent analysis--controlled perfusion of isolated liver--hyperthermia oxidative stress--thiobarbituric acid reactive substance--animal experiment--animal model--animal tissue--article--bioluminescence--concentration (parameters)--controlled study--correlation analysis--female--hyperthermia--in vivo study--lipid peroxidation--liver metabolism--liver perfusion--male--nonhuman--oxidative stress--oxygen consumption--pathology--rat--thermal exposure--animals--female--hepatocytes--hyperthermia, induced--liver--luminescent measurements--male--oxidative stress--perfusion--rats--animalia
Аннотация: We studied the possibility of evaluation of the intensity of pathological oxidative processes in rat liver using an integral bioluminescent test with controlled perfusion of the isolated organ. The test revealed a significant correlation between the level of TBA-reactive products and bioluminescence intensity.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shishatskaya E.I.
Заглавие : Biomedical investigations of biodegradable PHAs
Место публикации : Macromolecular Symposia. - 2008. - Vol. 269, Is. 1. - С. 65-81. - ISSN 10221360 (ISSN) , DOI 10.1002/masy.200850909
Ключевые слова (''Своб.индексиров.''): biodegradable polymers--biomedical investigations--pha--abs resins--biodegradable polymers--biopolymers--biotechnology--bone--cell culture--endothelial cells--fibers--functional polymers--osteoblasts--polymers--surgery--abdominal surgeries--biocompatible--biodegradable--biomedical--biomedical investigations--bone defects--ectopic bones--hepatocytes--in vitro--microparticles--oral surgeries--osteogenesis--pha--polyhydroxybutyrate--polymer devices--ralstonia--russian academy of sciences--two types--polymer films
Аннотация: This work is a review of the results of biomedical studies of polymer devices (films, fibers, microparticles, 30 implants) made from resorbable PHAs synthesized by the bacterium Wautersia (Ralstonia) eutropha 65786, using the technology developed at the Institute of Biophysics of the Siberian Branch of the Russian Academy of Sciences. Two types of PHAs - polyhydroxybutyrate (PHB) and a hydroxybutyrate/hydroxyvalerate copolymer (PHB/PHV) - have been proven to be biocompatible in vitro in cultures of fibroblasts, endothelial cells, hepatocytes, and osteoblasts, and in short- and long-duration experiments on animals. Polymer films and membranes have been found to be usable as scaffolds for functioning cells and monofilament suture fibers - for stitching muscular-fascial wounds and in abdominal surgery. Ectopic bone formation assay and experiments with the model of segmental osteotomy showed that 30 PHB and PHB/HA implants can be used for reparative osteogenesis. The paper reports beneficial results of using polymers to repair bone defects in oral surgery. Copyright В© 2008 WILEY-VCH Verlag GmbH & Co. KGaA.
Scopus
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shishatskaya E.I., Eremeev A.V., Gitel'zon I.I., Setkov N.A., Volova T.G.
Заглавие : Cytotoxicity of polyhydroxyalkanoates in animal cell cultures.
Место публикации : Doklady Biological Sciences. - 2000. - Vol. 374, Is. 1-6. - С. 539-542. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): dna--hydroxybutyric acid--poly(3 hydroxybutyrate) co (3 hydroxyvalerate)--poly(3 hydroxybutyric acid)--poly(3-hydroxybutyrate)-co-(3-hydroxyvalerate)--poly-beta-hydroxybutyrate--polyester--rna--thymidine--uridine--animal--article--biosynthesis--cell division--cell strain 3t3--cell survival--cytology--drug effect--liver--liver cell--metabolism--mouse--vascular endothelium--3t3 cells--animals--cell division--cell survival--dna--endothelium, vascular--hepatocytes--hydroxybutyrates--liver--mice--polyesters--rna--thymidine--uridine
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Eremeev A.V., Setkov N.A.
Заглавие : DNA synthesis in heterokaryons obtained by fusion of hepatocytes from a regenerating mouse liver and NIH 3T3 fibroblasts
Место публикации : Doklady Biological Sciences. - 2000. - Vol. 372, Is. 1-6. - P329-332. - ISSN 00124966 (ISSN)
Ключевые слова (''Своб.индексиров.''): dna--thymidine--animal--article--biosynthesis--cell division--cell fusion--cell strain 3t3--cytology--hybrid cell--kinetics--liver cell--liver regeneration--metabolism--mouse--3t3 cells--animals--cell division--cell fusion--dna--hepatocytes--hybrid cells--kinetics--liver regeneration--mice--thymidine
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vinokurov A.P., Eremeev A.V., Setkov N.A.
Заглавие : Dobutamine prevents experimental postintoxication liver cirrhosis in mice
Место публикации : Bulletin of Experimental Biology and Medicine. - 2002. - Vol. 134, Is. 1. - P43-46. - ISSN 00074888 (ISSN) , DOI 10.1023/A:1020604621142
Ключевые слова (''Своб.индексиров.''): dobutamine--hepatocytes--liver cirrhosis--proliferation--adrenergic receptor stimulating agent--alpha 1 adrenergic receptor stimulating agent--beta 1 adrenergic receptor stimulating agent--beta 2 adrenergic receptor stimulating agent--carbon tetrachloride--catecholamine derivative--dobutamine--epidermal growth factor--animal cell--animal experiment--animal model--animal tissue--article--cell activity--cell culture--cell death--cell proliferation--cell stimulation--chronic hepatitis--connective tissue--controlled study--disease association--drug effect--drug potency--experimental test--female--liver cell--liver cirrhosis--liver fibrosis--liver hyperplasia--liver necrosis--liver parenchyma--liver regeneration--liver toxicity--morphology--mouse--nonhuman--toxicity testing--adrenergic beta-agonists--animals--carbon tetrachloride--cell division--dobutamine--dose-response relationship, drug--female--hepatocytes--liver--liver cirrhosis--mice--mice, inbred balb c--animalia
Аннотация: Various chronic inflammatory and necrotic processes in the liver parenchyma are accompanied by pathological morphofunctional changes, which are associated with hepatocyte death and hyperplasia of the connective tissue. Regeneration of the liver parenchyma should include not only prevention of fibrosis, but also stimulation of hepatocyte prolifearation. The adrenoceptor agonist dobutamine stimulated proliferative activity of cultured hepatocytes and prevented the development of postintoxication liver cirrhosis in mice produced by chronic poisoning with CCl4.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Vinokurov A.P., Eremeev A.V., Setkov N.A.
Заглавие : Dobutamine prevents experimental postintoxication liver cirrhosis in mice
Колич.характеристики :4 с
Место публикации : Bull. Exp. Biol. Med.: CONSULTANTS BUREAU, 2002. - Vol. 134, Is. 1. - P43-46. - ISSN 0007-4888, DOI 10.1023/A:1020604621142
Примечания : Cited References: 14
Предметные рубрики: GROWTH-FACTOR-BETA
HEPATIC-FIBROSIS
RAT HEPATOCYTES
NOREPINEPHRINE
INJURY
CELLS
Ключевые слова (''Своб.индексиров.''): hepatocytes--dobutamine--proliferation--liver cirrhosis
Аннотация: Various chronic inflammatory and necrotic processes in the liver parenchyma are accompanied by pathological morphofunctional changes, which are associated with hepatocyte death and, hyperplasia of the connective tissue. Regeneration of the liver parenchyma should include not only prevention of fibrosis, but also stimulation of hepatocyte proliferation. The adrenoceptor agonist dobutamine stimulated proliferative activity of cultured hepatocytes and prevented the development of postintoxication liver cirrhosis in mice produced by chronic poisoning with CCl4.
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11.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Mogilnaya O.A., Puzyr A.P., Baron A.V., Bondar V.S.
Заглавие : Hematological Parameters and the State of Liver Cells of Rats After Oral Administration of Aflatoxin B1 Alone and Together with Nanodiamonds
Колич.характеристики :5 с
Коллективы :
Место публикации : Nanoscale Res. Lett.: SPRINGER, 2010. - Vol. 5, Is. 5. - С. 908-912. - ISSN 1931-7573, DOI 10.1007/s11671-010-9571-8
Примечания : Cited References: 23. - The study was financially supported by the Russian Foundation for Basic Research (RFBR) (Grant No. 06-0490234) and the RAS Presidium (Program No. 27, Project No. 64).
Предметные рубрики: B-1
MYCOTOXINS
ADSORPTION
Ключевые слова (''Своб.индексиров.''): nanodiamonds--aflatoxin b(1)--detoxification--adsorbent
Аннотация: Hematological parameters and the state of liver cells of rats were examined in vivo after the animals received aflatoxin B(1) (AfB(1)) alone and together with modified nanodiamonds (MND) synthesized by detonation. The rats that had received the MND hydrosol had elevated leukocyte levels, mainly due to higher granulocyte counts and somewhat increased monocyte counts compared to control rats. Hematological parameters of the rats that had received AfB(1) alone differed from those of the control rats in another way: total white blood cell counts were significantly lower due to the decreased lymphocyte counts. In rats that had consumed AfB(1) with the MND hydrosol, changes in hematological parameters were less pronounced than in rats that had consumed either AfB(1) or MND. Electron microscopy showed that hepatocytes of the rats that had received the MND hydrosol or AfB(1) with the MND hydrosol contained elevated levels of lipid inclusions and lysosomes. Hyperplasia of the smooth endoplasmic reticulum (EPR) was revealed in liver specimens of the rats that had received AfB(1). Results of the study suggest the conclusion about mutual mitigation of the effects of nanoparticles and the mycotoxin on rats blood and liver cells after AfB(1) has adsorbed on MND.
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12.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : SETKOV N.A., KAZAKOV V.N., ANDREYEVA T.V.
Заглавие : HEPATOCYTES IN HETEROKARYONS DO NOT RETARD THE ENTRY OF STIMULATED FIBROBLAST NUCLEI INTO THE S-PERIOD
Колич.характеристики :10 с
Место публикации : TSITOLOGIYA: MEZHDUNARODNAYA KNIGA, 1991. - Vol. 33, Is. 6. - P76-85. - ISSN 0041-3771
Примечания : Cited References: 39
Предметные рубрики: HUMAN-DIPLOID FIBROBLASTS
LIVER PLASMA-MEMBRANES
DNA-SYNTHESIS
PRIMARY CULTURE
MOUSE HEPATOCYTES
CELLS INVITRO
SENESCENT
GROWTH
INHIBIT
PHASE
Аннотация: Serum-deprived (0.2 %) resting and serum-stimulated (10 %) proliferating NIH 3T3 mouse fibroblasts were fused with hepatocytes from intact, regenerating and embryonic mouse livers to elucidate mechanisms of liver cell proliferation, DNA synthesis being investigated in nuclei of heterokaryons and non-fused cells using radioautography. Hepatocytes in heterokaryons were found to have no inhibitory effect on the entry of stimulated fibroblast nuclei into the S-period, but on the contrary they were involved in DNA synthesis. In addition, the nuclei in heterokaryons mutually stimulated each other to enter the S-period. In their turn, the resting fibroblasts did not prevent the proliferating hepatocytes from the regenerating and embryonic livers to enter the S-period. Possible reasons of the absence of inhibitory effect of differentiated cells in heterokaryons are discussed. The data obtained enable us to conclude that the mechanism of proliferative process control in resting immortalized cells differs from that in differentiated cells where proliferation seems to be stopped without affecting the endogenous inhibitor postulated for the resting and ageing fibroblasts.
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13.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Setkov N.A., Eremeev A.V.
Заглавие : Inhibitors of protein biosynthesis can stimulate proliferation of mouse hepatocytes in vitro
Колич.характеристики :8 с
Место публикации : Biol. Bull: MAIK NAUKA/INTERPERIODICA, 2003. - Vol. 30, Is. 3. - P212-219. - ISSN 1062-3590, DOI 10.1023/A:1023843409416
Примечания : Cited References: 43
Предметные рубрики: TRANSFORMING-GROWTH-FACTOR
RAT-LIVER REGENERATION
FACTOR-BETA
DNA-SYNTHESIS
PRIMARY CULTURE
PARTIAL-HEPATECTOMY
EPITHELIAL-CELLS
EXPRESSION
MECHANISMS
MODULATION
Аннотация: Hepatocyte proliferation in the liver regenerating after partial hepatectomy ceases when the organ is restored, and the mechanism of this phenomenon is still unclear. In the experiments on fusing hepatocytes from the reoenerated mouse liver (15 days after partial hepatectomy) with NIH 3T3 mouse fibroblasts, we revealed no DNA synthesis in the nuclei of stimulated fibroblasts in heterokaryons (in the presence of hepatocyte nuclei), whereas DNA synthesis in nonfused cells was undisturbed. In this work, our purpose was to find out whether the suppression of DNA synthesis in heterokaryons could be due to the appearance in hepatocytes of some endogenous factors having an inhibitory effect on proliferation. To this end, hepatocytes from the mouse liver regenerated after partial hepatectomy were treated with cycloheximide for 1-4 h and were then fused with stimulated fibroblasts. Such a short-term treatment of hepatocytes with cycloheximide proved to result in the loss of their ability to inhibit DNA synthesis in the nuclei of stimulated or quiescent fibroblasts in heterokaryons, but hepatocytes proper actively proliferated in the medium with a low serum content (0.2%). When the mice with the liver reoenerated after partial hepatectomy were treated with a single sublethal dose of cycloheximide (3 mg/kg), their hepatocytes taken two days after this treatment had no inhibitory effect. Puromycin, another inhibitor of protein synthesis, had the same effect on hepatocytes. These results may be interpreted as evidence that the final stage of liver regeneration after damage is controlled by the factors having a C C negative effect on cell proliferation.
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