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이택후,김지은,김다정,박부환,박난희,김효정,최보은 한국과학수사학회 2016 과학수사학회지 Vol.10 No.2
본 연구는 실질적인 유아성폭력 예방 프로그램을 개발하기 위하여 유아성폭력 피해특성을 분석하고 피해유아와 가해자의 특성에 따른 피해특성의 차이를 파악하여 기초자료를 제공하고자 시도하였다. 연구 대상자는 2005년부터 2014년까지 D시의 아동성폭력전담센터를 방문한 성폭력 피해유아 160명을 대상으로 하였고, 데이터는 SPSS WIN 21.0 프로그램을 이용하여 분석하였다. 분석결과, 대상자의 개인특성 및 가족특성에 따른 피해특성의 차이는 성별에 따라 피해유형에서, 연령에 따라 피해유형과 피해시간에서, 가족형태에 따라 피해장소와 피해시간, 월 수입에 따라 피해횟수와 피해장소가 통계적으로 유의한 차이가 있었다(p<.05). 가해자의 특성에 따른 피해특성 차이는 가해자 연령에 따라 피해횟수, 피해장소, 피해시간에서, 피해유아와 가해자의 관계에 따라 피해장소, 피해시간에서, 면식여부에 따라 피해횟수, 피해장소에서 통계적으로 유의한 차이가 있었다(p<.05).
세포질내 정자주입법(ICSI)에 있어서 정자흡입 및 난자내 주입방법에 관한 연구
이택후,김항진,송건호,김대근,전상식,박윤규,서태광,전병균,류은경,이은숙,문진수,김광철 경북대학교 의학연구소 2000 경북대학교병원의학연구소논문집 Vol.4 No.1
Study on Method of Sperm Aspiration and Injection into an Oocyte in Intracytoplasmic Sperm Injection(ICSI) Immobilization of spermatozoa prior to intracytoplasmic sperm iniection(ICSI) sometimes results in crooked tail and this makes it difficult to aspirate sperm into an injection pipette tail first. Head-first sperm aspiration into an injection pipette avoid this problem due to the bigger size of the sperm head. The effect of head or tail-first sperm injection into an oocyte on fertilization cleavage, percentage of grade I embryos and development to blastocyst stage in ICSI program has been studied. A single living immobilized spermatozoa from oligoasthenozoospermic patient was injected into an oocyte head-first or tail-first according to the treatment. Eighteen hours after microinjection, oocytes ware inspected for survival and fertilization Fertilized oocytes with two pronuclei were cultured in 30μl drop of mHTF supplemented with 10% heat-inactivated follicular fluid(FF) at 37℃. On day 2. embryo transfer was performed with cleaved embryos. The remaining 2-8 cell stage embryos were co-cultured with BRL cells in mHTF + 10% FF for 72 hours and the developmental stage was observed. The data were analyzed by Analysis of Variance. A total of 164 oocytes from 36 cycles were assigned to earth treatment and ICSI was performed(88 head-first, tail-first). The rates of normal fertilization were 81.8% and 76.3% for head-first and tail-first, respectively. Of the fertilized oocytes, the percentage of cleaved embryos and the percentage of grade 1 embryo among cleaved embryos were 88.9% and 68.8%, 93.1% and 74.1% for head-first and tail-first, respectively. Of the 2-8 cell embryos cultured, 44.4%(16/36) and 50.0%(10/20) for head first and tail first, respectively developed to blastocyst stage. There were no differences in fertilization, cleavage, rates of grade 1 embryos, and development to blastocyst stage. In conclusion, head-first or tail-first sperm injection into an oocyte in ICSI program does not affect fertilization and subsequent embryo development to blastocyst stage in vitro.