메뉴 건너뛰기
.. 내서재 .. 알림
소속 기관/학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
로그인 회원가입 고객센터 ENG
주제분류

추천
검색

이용수

표지
📌
연구주제
📖
연구배경
🔬
연구방법
🏆
연구결과
AI에게 요청하기
추천
검색

초록· 키워드

오류제보하기
Background and Objectives:In neonatal hyperbilirubinemia, accumulation of unconjugated bilirubin in the central auditorypathway and basal ganglia may cause sensorineural hearing loss and neurologic sequelae. The effect of unconjugated bilirubinon the brain is known well through auditory brainstem responses (ABRs). However, there is no evidence of pathologic changesin the cochlea. Jaundiced (jj) Gunn rats have been used as a good animal model for hyperbilirubinemia-related auditory dysfunction.The purpose of this study is to evaluate the bilirubin ototoxicity using ABR and DPOAE in jaundiced Gunn rats beforeand after sulfadimethoxine injection. Materials and Method:Experiments were conducted on three homozygous (jj) P19(postnatal 19 days) littermates, one heterozygous Gunn rat, five P21 jj littermates, and one nj Gunn rat littermate. P21 jj and njGunn rats were re-tested in three weeks in the same condition. ABR with 100-microsecond pulse width click and DPOAEs at8 kHz, 16 kHz and 22 kHz were measured before and after 1 mg/kg sulfadimethoxine injection. Results:The thresholds ofABR were elevated in P19 and P21 group within the first day after injection and became normalized at several days afterinjection. Delay of wave II, III, IV and V were also observed. DPOAE showed no significant change after injection in all groups,meaning that the cochlea was not damaged. Conclusion:This study shows that bilirubin ototoxicity is related with pathologicchanges at or higher than the brainstem level with intact cochlear function. Changes in ABR findings were only observed in P19and P21 groups because they had higher bilirubin level in blood and their central auditory pathway is more immature than thatfound in the P42 group. In this study, we also found the possibility of spontaneous recovery from hyperbilirubinemia-relatedauditory toxicity.

목차

등록된 정보가 없습니다.

참고문헌 (10)

참고문헌 신청

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!

이 논문의 저자 정보

최근 본 자료

전체보기

댓글(0)

0