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척수손상고양이에서 thyrotropin releasing hormone이 somatosensory evoked potentials에 미치는 영향에 관한 연구

Authors
 박종운 
Issue Date
1986
Description
의학과/박사
Abstract
[영문]

[한글]

척수 손상시 신경학적 기능 회복에 naloxone이 임상적으로 이용되고 있으며, 또한 최근

에는 시상하부에서 유리되며 뇌하수체 전엽에서 갑상선 자극 호르몬의 분비를 촉진시키는

thyrotropin releasing hormone(TRH)이 naloxone과 비슷한 목적으로 사용되고 있다.

본 실험에서는 TRH정맥내 투여가 척수 손상 고양이에서 체성감각유발전위(somatosensor

y evoked potentials, SEPs)의 회복에 미치는 영향을 연구하고저 고양이의 좌측 좌골신경

을 전기자극(4∼7 volts, 0.1msec)할 때 우측 체성감각 대뇌피질에서 유발되는 SEPs를 기

록하여 이를 척수의 신경전도 기능의 호전유무의 지표로 삼았다.

제 7흉수에 400gm·cm의 손상을 가해준 실험 고양이에서 체성감각유발전위의 회복유무

에 naloxone(10mg/kg) 혹은 TRH(4mg/kg) 투여가 어떤 영향을 미칠 것인가에 대해 74시간

에 걸쳐 기록 관찰하여 다음과 같은 결론을 얻었다.

1. 척수 손상직 후 소실 되었던 체성 감각유발전위는 TRH 혹은 naloxone투여로 회복되

는 양상을 보였으며, 생리식염수 투여시는 회복되지 않았다.

2. TRH투여군은 17예중 11예에서 회복되어 64.7%의 회복율을 보였으며, naloxone투여군

은 8예중 5예에서 회복되어 62.5%의 회복율을 보였다.

이상의 결과로 보아 TRH는 척수 손상 동물에서 naloxone보다 체성감각유발전위의 회복

에 양호한 효과가 있음을 알 수 있었으며, 그 기전은 더욱 추구해야 될 과제라 생각한다.





The Effect of Thyrotropin Releasing Hormone on Somatosensory Evoked Potentials in

Cats with Spinal Cord Injury



Chong Oon Park

Department of Medical Science The Graduate School, Yonsei University

(Directed by Professor Kyu Chang Lee, M.D.)



The therapeutic goal for the spinal injury has been focused on preventing the

secondary ischemic changes because of the poor regeneration of human spinal cord.

Naloxone, an antagonist of endogenous opiates, has been clinically used for the

purpose of preventing isohemic change and improving the recovery of neurological

function after spinal injury. Recently, thyrotropin releasing hormone(TRH), a

hypothalamic hormone inducing the thyrotropin secretion in anterior pituitary

gland, has been known as a potent stimulator of cardiovascular functions in shock

and the neurologic recovery in injuries of central nervous system, however, its

underlying mechanism is still obscure.

The present study was designed to determine whether TRH was also effective to

improve the experimentally induced spinal injury as naloxone did. Somatosensory

evoked potentials(SEPs) have used as an index for recovery of neurological function

a(leer the spinal injury which was induced by the 400gm·cm contusion of the T-7

spinal lever in cats.

The results are summerized as fellows :

1. SEPs abolished soon after spinal contusion were reappeared 3 hours after

injury when either of naloxone(10 mg/kg) or TRH(4 mg/kg) was administrated

intravenously. Its recovery was completed after 24 hours.

2. The recovery rates of SEPs after treatments of naloxone and TRH were 62.5% and

64.7% of experimental animals, respectively.

In conclusion, the present studies confirm the therapeutic benefit of TRH in

experimental spinal injury and demonstrate that it is superior to treatment with

naloxone. Further studies would be needed to explain the underlying mechanism of

TRH effects.
Full Text
https://ymlib.yonsei.ac.kr/catalog/search/book-detail/?cid=CAT000000045486
Files in This Item:
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Appears in Collections:
1. College of Medicine (의과대학) > Others (기타) > 3. Dissertation
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/135662
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