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Natural Killer Cell Activity during arm ergometer exercise in persons with spinal cord in injuries

Research Project

Project/Area Number 17500368
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Rehabilitation science/Welfare engineering
Research InstitutionWakayama medical university

Principal Investigator

TAJIMA F.  Wakayama medical university, medical department, professor, 医学部, 教授 (00227076)

Co-Investigator(Kenkyū-buntansha) NAKAMURA Takeshi  Wakayama medical university, medical department, lecturer, 医学部, 講師 (80299635)
TOGE Yasushi  Wakayama medical university, medical department, lecturer, 医学部, 講師 (10372864)
Project Period (FY) 2005 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 2005: ¥1,600,000 (Direct Cost: ¥1,600,000)
KeywordsAdrenaline / Cortisol / Prostaglandin / Immune system / Exercise / Spinal cord injuries
Research Abstract

The purpose of the present study was to determine natural killer cell activity (NKCA) to 2-hour arm ergometer exercise in persons with spinal cord injuries (SCI) and the underlying mechanism of such responses. We examined NKCA response to 2-hour arm crank ergometer exercise at 60% of maximum oxygen consumption (VO2max) in SCI and able-bodied persons. NKCA and plasma concentrations of prostaglandin E2 (PGE2), adrenaline and cortisol were measured before, during, immediately after, and recovery of the exercise. The study included seven subjects with SCI between Thl 1 and L4 and 6 able-bodied persons. NKCA in able-bodied subjects increased (P <0.05) at 60 min of exercise and immediately after the exercise, and remained elevated up to 2 h after exercise. However, NKCA in SCI decreased (P <0.05) immediately after exercise but recovered at 2 h after exercise. Plasma adrenaline in both groups increased significantly (P <0.05) immediately after exercise and returned to baseline level 2 h after the exercise. Plasma cortisol in both groups remained constant throughout the study. In SCI, PGE2 significantly increased immediately after 2 h exercise and returned to the baseline level 2 h after exercise, however it remained unchanged during the test in able-bodied subjects. Our results suggested that increase of PGE2 in SCI partially contributes to NKCA.

Report

(3 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • Research Products

    (3 results)

All 2007

All Journal Article (3 results)

  • [Journal Article] Attenuation of natural killer cell activity during two-hour exercise in individuals with spinal cord injuries.2007

    • Author(s)
      Ueta M, Furusawa K, Takahashi M, Akatsu Y, Nakamura T, Tajima F
    • Journal Title

      Spinal Cord (In press)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Attenuation of natural killer cell activity during two-hour exercise in individuals with spinal cord injuries2007

    • Author(s)
      Ueta M, Furusawa K, Takahashi M, Akatsu Y, Nakamura T, Tajima F
    • Journal Title

      Spinal Cord (in press)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Attenuation of natural killer cell activity during two-hour exercise in individuals with spinal cord injuries2007

    • Author(s)
      Ueta M, Furusawa K, Takahashi M, Akatsu Y, Nakamura T, Tajima F
    • Journal Title

      Spinal Cord (inpress)

    • Related Report
      2006 Annual Research Report

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Published: 2005-04-01   Modified: 2016-04-21  

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