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The role of the brain dopamine transporter on vulnerability to psychotic relapse in methamphetamine sensitized rats.

Research Project

Project/Area Number 07671045
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Psychiatric science
Research InstitutionTohoku University

Principal Investigator

NUMACHI Sumiko  Tohoku Univ. Sch. of Med., Dpt. of Psychiatry, Assistant, 医学部, 助手 (50261532)

Co-Investigator(Kenkyū-buntansha) SATO Mitsumoto  Tohoku Univ. Sch. of Med., Dpt. of Psychiatry, Profess, 医学部, 教授 (70033321)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1996: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1995: ¥1,000,000 (Direct Cost: ¥1,000,000)
Keywordsmethamphetamine / behavioral sensitization / dopamine transporter / high affinity site / low affinity site / Bmax / Kd / pharmachokinetics
Research Abstract

In animals, a long-term behavioral sensitization (LTBS) to methamphetamine (MAP) or amphetamine (AMP) has been confirmed after subchronic administration of these central stimulants. A challenge injection of these stimulants to sensitized animals induces a significantly greater increase in dopamine (DA) release in the striatum and nucleus accumbens, which relates to induction and manifestation of the LTBS and the brain vulnerability to psychotic relapse. Since dopamine transporter (DAT) uptake MAP and AMP and release DA in exchange for them (exchange model : Fischer and Cho, 1979), DAT may play an essential role for the MAP induced LTBS.Recently, it was reported that DAT is necessary to produce LTBS and the related DA increase by DAT knockout mice (Giros, et al., 1996.). The cocaine analogue RTI 55 is one of the most potent ligand for DAT.To determine if subchronic administration of MAP produces long-lasting alterations in DAT,we examined the regional accumulation of [^<11>C] MAP in the MAP sensitized rat brain and in vitro binding of [^<125>I] RTI 55 to DAT in the striatum. Male Sprague Dawley rats received a daily injection of MAP (4 mg/kg, i.p.) for 21 days. Seven days after the last injection, rats were examined. In the MAP sensitized animals, Bmax of DAT in high affinity site significantly increased, but the accumulation of [^<11>C] MAP did not change in striatum, nucleus accumbens and cerebellum. Science, Bmax of DAT in high affinity site reflect the DAT function. These results suggest that the increased Bmax may play a part of increased DA release in LTBS.But it is difficult to explain the MAP pharmachokinetcs only by a change in striatal DAT.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] Yoshida,S.,et al.: "Positoron emission tomography (PET) study of the alteration in brain distribution of [^<11>C] methamphetamine in methamphetamine sensitized dog." Nuclea Medicine and Biology. 22. 803-808 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 吉田寿美子: "メタンフェタミン慢性投与に伴うラット断崖回避反応の変化" 日本神経精神薬理学雑誌. 15. 397-403 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 吉田寿美子,他: "神経分裂病における事象関連電位の変化と側頭葉・海馬体積異常との関連" 臨床脳波. 38. 73-78 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshida,S.: "Methamphetamine-induced reverse tolerance phenominon in Stereotypy and impaired cliff avoidance reaction in the three strains of rat." Society for Neuroscience Abstract. 22. 475- (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 佐藤光源: "覚醒剤の長期乱用による二次性脳障害." 脳と精神の医学. 7. 153-160 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 佐藤光源: "覚醒剤による遅発性精神病疾患概念と成因研究の現状" 精神医学. 38. 795-805 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 吉田寿美子(分担): "薬物依存と脳障害(佐藤光源,沼知陽太郎編)" 学会出版センター, 10 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Numachi, Y., Yoshida, S., Toyota, H., Ito, C., Matsuoka, H., and Sato, M.: "EX vivo autoradiography and radiolabeled receptor [^<125>I] RTI 55 in the cocaine sensitized rat brain." J.of Neurochemistry. 65. s170 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Mizugaki, M., Ishiwata, S., Suzuki, H., Ido, T., Iwata, R., Funaki, Y., Itoh, M., Sato, M., Numachi, Y.and Yoshida, Y.: "Positron emission tomography (PET) study of the alteration in brain distribution of [^<11>C] methamphetamine in methamphetamine sensitized dog." Nuclear Medicine and Biology. 22. 803-808 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshida, S., Numachi, Y., Matsuoka, H., Fuse, Y.and Sato.M.: "Reverse-tolerance in methamphetamine-induced behavioral stereotypy and impairment of cliff avoidance reaction after subchronic methamphetamine administration in rats. (in Japanese)" Japanese J.of Psychopharmacology. 15. 397-403 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Matsuoka, H., Sato, M., Yoshida, S., Sato, A., Toda, S., Saito, H., Higano, S.and Sato, M.: "Relationship of event-related potential changes to temporo-hippocampal abnormality in schizophrenia. (in Japanese)" Rinsyo noha. 38(2). 73-78 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshida, S., Numachi, Y., Matsuoka, H., Fuse, Y.and Sato, M.: "Methamphetamine-induced reverse tolerance phenomenon in stereotypy and impaired cliff avoidance reaction in the three strains of rats." Society for Neuroscience Abstract. 22. 475 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshida, S., et al.: "Positoron emission fomography (PET) study of the alteration in brain distribution of [^<11>C] methamphetamine in methamphetamine sensitized dog." Nuclea Medicine and Biology. 22. 803-808 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 吉田寿美子: "メタンフェタミン慢性投与に伴うラット断崖回避反応の変化." 日本神経精神薬理学雑誌. 15. 397-403 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] 吉田寿美子,他: "精神分裂病における事象関連電位の変化と側頭葉・海馬体積異常との関連." 臨床脳波. 38. 73-78 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yoshida, S.: "Methamphetamine-induced reverse tolerance phenominon in Stereotypy and impaired cliff avoidance reaction in the three strains of rat." Society for Neuroscience Abstract. 22. 475- (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 佐藤光源: "覚醒剤の長期乱用による二次性脳障害" 脳と精神の医学. 7. 153-160 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 佐藤光源: "覚醒剤による遅発性精神病疾患概念と成因研究の現状." 精神医学. 38. 795-805 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 吉田寿美子(分担): "薬物依存と脳障害(佐藤光源,沼知陽太郎編)" 学会出版センター, 10 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yoshida, S. et al.: "EX vivo autoradiography and radiolabeled receptor assey using [^<125>I]RTI 55 in the cocaine sensitized rat brain." Journal of Neurochemistry. 65. s170 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Yoshida, S. er al.: "Positoronemission tomography (RET) study of the alterations in brain distribution of [^<11>C] methamphetamine in methamphetamine sensitized dog." Nuclea Medicine and Biology. 22. 803-808 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Yoshida, S.: "Changes in cliff avoidance reaction induced by subchronic methmphetamine administration in rats." The Japanese Journal of Psychiatry and Neurology. 48(3). 684 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 吉田寿美子: "メタフェタミン慢性投与に伴うラット断崖回避反応の変化." 日本神経精神薬理学雑誌. 15. 397-403 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Sato, M.: "Metamfetamina asuso, dipendenz a e psicosi nel pase del sol levant." Medicina delle tossicodipendenze.11. 48-51 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 佐藤光源: "覚醒剤-乱用・依存と脳障害." こころの科学. 57. 69-72

    • Related Report
      1995 Annual Research Report
  • [Publications] 吉田寿美子(分担): "薬物依存と脳障害" 学会出版センター(印刷中),

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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