Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Effect of a Combinacon of Mental Activity with Experimental Subway Noise on Hematology

실험적 지하철 소음에서의 지적활동이 혈액생리에 미치는 영향

  • Choi, Seok-Cheol (Department of Clinical Laboratory Science, College of Health Sciences, Catholic University of Pusan) ;
  • Hyun, Kyung-Yae (Department of Biomedical Laboratory of Science, Inje University) ;
  • Park, Jae-Hyun (Department of Clinical Laboratory Science, College of Health Sciences, Catholic University of Pusan) ;
  • Kwon, Heun-Young (Department of Clinical Laboratory Science, College of Health Sciences, Catholic University of Pusan)
  • 최석철 (부산가톨릭대학교 보건과학대학 임상병리학과) ;
  • 현경예 (인제대학교 의생명공학부 임상병리학과) ;
  • 박재현 (부산가톨릭대학교 보건과학대학 임상병리학과) ;
  • 권헌영 (부산가톨릭대학교 보건과학대학 임상병리학과)
  • Published : 2006.12.01
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Abstract

The present study was sought to clarify whether the combination of mental activity with subway noise affects hematological variables. Fifty-six healthy volunteers participated in this experiment and underwent a stress task consisting of combination_of mental activity (mental arithmetic) with subway noise for 50 min and 60min of recovery after the end of the stress task. Venous blood samples were collected for measuring CBC, prothrombin time (PT), activated partial thromboplastin time (aPTT), erythrocyte sedimentation rate (ESR), fibrinogen concentration, D-dimer and high sensitive C-reactive protein (H-CRP) levels before (baseline), 50min of stress task (S-50m), and 60 min of recovery (R-60m). Total leukocyte, neutrophil and lymphocyte counts significantly increased at R-60m compared with baselines. RBC count at S-50m was higher, while monocyte counts at S-50m and R-60m were lower than those of baselines. aPTTs shortened at S-50m and R-60m, but PT reduced at R-60m as compared with baselines. D-dimer and H-CRP levels at S-50m and R-60m were significantly higher than those of baselines. These findings imply that a combination of mental activity with subway noise nay cause leukocytosis, homo-concentration, shortened PT and aPTT, decreased ESR, and raised D-dimer and H-CRP levels, suggesting possible development of inflammation and prothrombogenic reaction attributable to a subway environment.

이 연구는 지하철 소음 하에서 지적활동이 혈액생리에 어떤 영향을 미치는지 규명하기 위해 계획되었다. 56명의 건강한 지원자를 대상으로 지하철 소음노출 하에서 지적활동(암산)을 50분간 수행한 후 60분간의 휴식을 취하게 하였다. 스트레스 노출 전(기준치), 노출 50분, 노출 종료 후 60분의 휴식 등의 세 시기 때 정맥혈액을 채취하여 CBC, prothrombin time (PT), activated partial thromboplastin time (aPTT), 적혈구침강률, 섬유소원 농도, D-dimer 농도, 고감도 C-반응단백(H-CRP) 농도를 각각 분석하였다. 총 백혈구 수, 호중구 수, 림프구 수는 스트레스 종료 후 60분때는 모두 기준치보다 유의하게 상승하였다. 적혈구 수는 스트레스 노출 50분 때 기준치에 비해 유의한 증가를 보인 반면, 단구 수는 스트레스 노출 50분과 종료 후 60분 때 모두 기준치보다 유의하게 저하되었다. 혈소판 수와 적혈구침강률은 스트레스 종료 후 60분 때 기준치보다 낮았다. aPTT는 스트레스 노출 50분과 종료 후 60분 때 기준치보다 유의하게 단축되었는데 비해, PT는 스트레스 종료 후 60분때만 유의하게 단축되었다 D-dimer와 H-CRP 농도 둘 다 스트레스 50분과 종료 후 60분 때 유의한 상승을 보였다. 이 연구의 결과들은 지하철 소음과 병행된 지적활동이 백혈구수의 증가, 혈액농축, PT 및 aPTT의 단축, ESR의 감소, D-dimer 및 H-CRP 생성의 증가를 일으키며 이는 좋지 않은 지하철 환경이 잠재적으로 염증반응 및 혈전형성 반응의 발생 가능성을 유도할 수도 있음을 시사하는 것이다.

Keywords

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