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EFFECTS OF THERMAL AND NON-THERMAL FACTORS ON RESPONSES OF VISUALIZED CAPILLARY VESSELS AND AVA BLOOD FLOW IN THE SKIN

Research Project

Project/Area Number 06670090
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Environmental physiology (including Physical medicine and Nutritional physiology)
Research InstitutionKOBE WOMEN'S UNIVERSITY

Principal Investigator

HIRATA Kouzou  KOBE WOMEN'S UNIV., DEPT.ENVIRON.PHYSIOL., PROFESSOR, 家政学部, 教授 (70110624)

Co-Investigator(Kenkyū-buntansha) SUYAMA Tomoko  KOBE WOMEN'S JUNIOR COLLEGE,ASSISTANT, 食物栄養科, 助手
吉田 美奈子  神戸女子大学, 助手
東渕 とも子  神戸女子短大, 助手
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1995: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsSKIN BLOOD FLOW / CAPILLARY VESSEL / ARTERIOVENOUS ANASTOMOSES / LOCAL WARMING / TEMPERATURE REGULATION / THERMAL FACTOR / NON-THERMAL FACTOR / VIDEOMICROSCOPE / 動静脈吻合(AVA) / 体温 / 温熱刺激 / 非温熱性刺激 / レーザードップラー血流計
Research Abstract

It is well known that thermal stimuli to the skin reflexively induce skin vasoconstriction or vasodilation through thermoregulatory center in the hypothalamus, and that the regulation of finger blood flow including arteriovenous anastomoses (AVA) is different from that of capillary blood flow in the ordinary skin.
To investigate the effects of local warming on the regulation of skin blood flow, six healthy subjects were measured finger capillary blood flow (FBF_<cap>) with laser-Doppler flowmeter at an ambient temperature of 23.7 to 25.5゚C.Subjects were cooled or warmed forearm by the special water-perfused tube at a water temperature (T_<forearm>) between 1゚C and 38゚C and feet by the water immersion (T_<feet>) at a temperature of 37゚C-40゚C.When T_<forearm> decreased from 40゚C to 1゚C at the T_<feet> of 40゚C,FBF_<cap> did not change at all. When T_<forearm> decreased from 37゚C to 3゚C at the T_<feet> of 37゚C,FBF_<cap> diminished 180mv to 100mv. And when T_<forearm> rose from 3゚C to 37゚C at the T_<feet> of 37゚C again, FBF_<cap> was totally recovered. Then, when T_<feet> increased from 37゚C to 38゚C at T_<forearm> of 37゚C,FBF_<cap> fell without any cool stimuli.
These results suggest that decreased finger capillary blood flow was contributed to counterbalance AVA vasodilation reflexively induced by local feet warming and was called "steal effect" on capillary blood flow.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] 平田耕造: "上肢末梢皮膚血流量に及ぼす圧迫強度と圧迫帯幅の影響-レーザー・ドップラー法による検討-" 繊維成品消費科学. 36. 154-161 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 平田耕造: "生活環境生理学における深部体温としての食道温・鼓膜温と直腸温の関係" 神戸女子大学家政学部紀要. 29. 1-11 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 平田耕造: "運動にる生理反応と着衣-皮膚血流量と発汗をはかる-" 人間工学. 30. 131-135 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 平田耕造: "皮膚血流調節の温熱生理学" 繊維成品消費科学. 36. 12-17 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] HIRATA,K.and YOSHIDA,M.: "Effects of cuff compression intensity and cuff width on skin blood flow measured by a laser-Doppler flowmeter" Jpn.Res.Assn.Text.End-Uses. 36. 154-161 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] HIRATA,K.: "Esophageal, tympanic and rectal temperatures as a body core temperature in living environmental physiology Bull." Kobe Women's Univ.Fac.Home Economics. 29. 1-11 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] HIRATA,K.: "Physiological responses during exercise in clothing man--Skin blood flow and sweat rate--" Jpn.J.Ergonomics. 30. 131-135 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] HIRATA,K.: "Thermophysiological regulation of skin blood flow" Jpn.Res.Assn.Text.End-Uses. 36. 12-17 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 平田耕造: "上肢末梢皮膚血流量に及ぼす圧迫強度と圧迫帯幅の影響---レーザー・ドップラー法による検討---" 繊維製品消費科学. 36. 154-161 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 平田耕造: "生活環境生理学における深部体温としての食道温・鼓膜温と直腸温の関係" 神戸女子大学家政学部紀要. 29. 1-11 (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] 平田耕造: "運動による生理反応と着衣--皮膚血流量と発汗をはかる--" 人間工学. 30. 131-135 (1994)

    • Related Report
      1995 Annual Research Report
  • [Publications] 平田耕造: "皮膚血流調節の温熱生理学" 繊維製品消費科学. 36. 12-17 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Hirata K: "Skin blood flow and local sweat rate during heat loads by leg water immersion and heat exposure" Jpn J Physiol. 44. s284- (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 平田 耕造: "上肢末梢皮膚血流量に及ぼす圧迫強度と圧迫帯幅の影響-レーザードップラー法による検討-" 繊維製品消費科学. 36. 154-161 (1995)

    • Related Report
      1994 Annual Research Report
  • [Publications] 平田 耕造: "寒冷下における高齢者の運動時体温調節反応とスポーツウェア" 日本生気象学会雑誌. 31. 116- (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] 平田 耕造: "皮膚血流調節の温熱生理学" 繊維製品消費科学. 36. 12-17 (1995)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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