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Sökning: hsv:(MEDICIN OCH HÄLSOVETENSKAP) hsv:(Medicinska och farmaceutiska grundvetenskaper) hsv:(Farmaceutiska vetenskaper) > (2000-2009) > (2009) > Bakalkin Georgy

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1.
  • Tan-No, Koichi, et al. (författare)
  • Involvement of the p53 tumor-suppressor protein in the development of antinociceptive tolerance to morphine
  • 2009
  • Ingår i: Neuroscience Letters. - : Elsevier BV. - 0304-3940 .- 1872-7972. ; 450:3, s. 365-368
  • Tidskriftsartikel (refereegranskat)abstract
    • The present study was designed to determine whether the p53 tumor-suppressor protein is involved in the development of antinociceptive tolerance to morphine. When the doses of morphine (mg/kg per injection) were subcutaneously given into mice as pretreatment twice daily for 2 days (first day (30) and second day (60)), intrathecal (i.t.) administration of morphine (0.1nmol) was inactive due to antinociceptive tolerance in the 0.5% formalin test on the third day. Tolerance to i.t. morphine was significantly suppressed by i.t. injection of pifithrin-alpha (1 and 10nmol), an inhibitor of p53 activation, benzyloxycarbonyl-Val-Ala-Asp(OMe)-fluoromethylketone (Z-VAD-fmk) (1 and 10nmol), a non-selective caspase inhibitor, or N(G)-nitro-l-arginine methyl ester (l-NAME) (2 and 20nmol), a non-selective inhibitor of nitric oxide synthase, 5min before each morphine treatment during the induction, with none given on the test day. Moreover, p53 expression in the spinal cord had increased significantly 14h after the last morphine administration. These results indicate that the increased expression and activation of p53, and the nitric oxide and caspase systems related to p53 may contribute to the development of antinociceptive tolerance to morphine in the mouse spinal cord.
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3.
  • Watanabe, Hiroyuki, et al. (författare)
  • FOSB proteins in the orbitofrontal and dorsolateral prefrontal cortices of human alcoholics
  • 2009
  • Ingår i: Addiction Biology. - : Wiley. - 1355-6215 .- 1369-1600. ; 14:3, s. 294-297
  • Tidskriftsartikel (refereegranskat)abstract
    • The transcription factor DeltaFosB is accumulated in the addiction circuitry, including the orbitofrontal and medial prefrontal cortices of rodents chronically exposed to ethanol or other drugs of abuse, and has been suggested to play a direct role in addiction maintenance. To address this hypothesis in the context of substance dependence in humans, we compared the immunoreactivities of FOSB proteins in the orbitofrontal and dorsolateral prefrontal cortices (OFC and DLPFC respectively) between controls and alcoholics using semiquantitative immunoblotting. In both structures, we detected three forms of FOSB, one of which was DeltaFOSB, but in neither case did their immunoreactivities differ between the groups. Our results indicate that the DeltaFOSB immunoreactivity in the human brain is very low, and that it is not accumulated in the OFC and DLPFC of human alcoholics, suggesting that it may not be directly involved in addiction maintenance, at least not in ethanol dependence.
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  • Resultat 1-3 av 3

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