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인간 배아 동결 해빙시 액체질소의 분사속도가 배아 발달 및 임신에 미치는 영향
김영아,서성석,김미란,황경주,박동욱,조미영,유희석,Kim, Young-Ah,Seo, Seong-Seog,Kim, Mi-Ran,Hwang, Kyung-Joo,Park, Dong-Wook,Jo, Mi-Yeong,Ryu, Hee-Suk 대한생식의학회 2001 Clinical and Experimental Reproductive Medicine Vol.28 No.4
Objective : To investigate the efficacy of high infusion frequency of liquid nitrogen on pregnancy in human embryo after freezing and thawing. Materials and Methods: 150 infertile patients underwent 162 consecutive thawing-ET cycles. In the high infusion frequency group (Group A), 47 patients (50 cycles) underwent cryopreservation with high infusion frequency of liquid nitrogen. In the low infusion frequency group (Group B), 103 patients (112 cycles) underwent cryopreservation with low infusion frequency of liquid nitrogen. We analyzed the clinical characteristics, fertilization rates, development of embryo, good quality embryo ratio, implantation rates, and pregnancy rates between these two groups. Results: There was no difference between the groups with regard to clinical characteristics (mean age, infertility duration, infertility factors, hormone profile), mean number of oocyte retrieval, fertilization rates, and mean embryo number of transfers. The survival rates in group A was 64.9% (228 of 350 embryos), and among the 228 embryos 190 embryos (83.3%) which progressed to the two- to eight-cell stage. After thawing, the embryo numbers were 65 (34.2%), 29 (15.3%), 35 (18.4%), and 37 (19.5%) of grades 1, 2, 3, and above 4, respectively. The survival rates in group B was 63.8% (482 of 755 embryos), and among the 482 embryos 465 embryos (96.5%) which progressed to the two- to eight-cell stage. After thawing, the embryo numbers were 106 (22.8%), 94 (20.2%), 89 (19.1%), and 112 (24.1%) of grades 1, 2, 3, and above 4, respectively. There was no difference in embryo quality change after the freezing-thawing procedure between the groups. Implantation rates (31.1% vs. 34.3%) were not significant. However hCG positive rates in group A (40%) were higher than group B, but not statistically significant. Clinical pregnancy rate (26% vs. 25.9%), on going pregnancy rates (>20 weeks) were not significant (26% vs. 25%). Conclusion: We compared embryo quality change, survival rates, and pregnancy rates between high infusion frequency group and low infusion frequency group and the results were similar between the two groups. Therefore, high infusion frequency of liquid nitrogen for cryopreservation is a worthy method to preserve in human embryos.
김영아 ( Young Ah Kim ),안상태 ( Sang Tae Ahn ),조미영 ( Mi Yeong Jo ),유승철 ( Seung Chul Yoo ),김미란 ( Mi Ran Kim ),황경주 ( Kyung Joo Hwang ),유희석 ( Hee Sug Ryu ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.4
Objective : To assess the advantages, disadvantages, applicability, and complications of laparoscopy in gynecologic diseases. Materials and Methods : A retrospective case series which includes 1711 patients who underwent laparoscopic surgery at Department
HCG 에 의하여 억제된 ATP 유도 인간 난소 황체화 과립막세포의 세포자멸사에 관한 연구
김영아(Young Ah Kim),김미란(Mi Ran Kim),황경주(Kyung Joo Hwang),박동욱(Dong Wook Park),조태섭(Tae Seop Cho),민철기(Churl K Min),조미영(Mi Yeong Jo) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.3
Objective: To determine the effects of hCG on extracellular ATP induced apoptosis in cultured human luteinized granulosa cells (hLGCs) Methods: The addition of various concentrations of ATP (0,0.1,0.25,0.5,0.75mM)and5IuhCG to luteinized granulosa cells obtained during in vitro fertilization ovum pickup procedures. After culture for 24 hours, purinoceptor activity and functional changes in mitochondria were measured by patch clamp, flow cytometry, and confocal microscopy. Results: Calcium imaging with fura-2 revealed that ATP elevated [Ca 2+]i by mobilizing intracellularly stored Ca 2+. A patch clamp study showed that ATP exerted its effect by initially binding to the P2Y type purinoceptor, as evidenced by the ATP-evoked outward Ca 2+ -activated K +current. Probing mitochondria with JC-1, a mitochondrial transmembrane potential-sensitive dye, revealed that ATP induced mitochondrial depolarization in a concentration-dependent manner. A quantitative flow cytometric analysis with Annexin V showed that apoptotic cells were increased in number in proportion to the concentration of ATP, having 18.57% of apoptotic cell populations in the presence of 0.75mM ATP compared to 7.88%in the control. Moreover, treatments with human chorionic gonadotropin (hCG) at 5 IU reversed both the ATP-induced mitochondrial depolarization and apoptosis (18.57 vs 6.32%). Conclusion: Taken together, these results indicate, first, extracellular ATP recognized by the P2Y type purinoceptor on h-LGCs increases the intracellular Ca2+ . Second, the increased intracellular Ca2+ triggers the apoptotic cascade by acting at least, in part, on mitochondria. Third, hCG reverses the ATP-induced apoptosis, raising a possible clinical implication of hCG in the treatment of degeneration of granulosa cells such as follicular atresia.
만삭 임신 수태 조직에서 유도체에 따른 Nuclear Factor Kappa B의 활성화 양상
김종화 ( Kim Jong Hwa ),김영아 ( Kim Yeong A ),양순하 ( Yang Sun Ha ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.9
Objective : Nuclear factor kappa B (NF-B) is a transcriptional factor in the expression of cyclooxygenase 2 (COX-2), the key enzyme in production of prostaglandins. The purpose of this study was to investigate the activation of NF- B in human gestational
50-g 경구 당부하 검사의 결과와 임신성 당뇨와의 상관관계에 관한 연구
김종화 ( Kim Jong Hwa ),서용수 ( Seo Yong Su ),최성진 ( Choe Seong Jin ),김영아 ( Kim Yeong A ),노정래 ( No Jeong Lae ),양순하 ( Yang Sun Ha ) 대한산부인과학회 2003 Obstetrics & Gynecology Science Vol.46 No.11
Objective : To evaluate the relationship between results of 50-g one-hour glucose screening test (50 GTT) and gestational diabetes and to find cut-off result value of 50 g GTT which can diagnosis the gestational diabetes without other confirmative tests.
간호대학생의 병원감염 예방행위에 대한 인지도와 실천도 - 대구ㆍ경북을 중심으로 -
권영숙(Kwon Young Sook),김영아(Kim Yeong Ah) 계명대학교 간호과학연구소 2004 계명간호과학 Vol.8 No.1
Purpose: This study was aimed for investigating recognition and performance level of the nursing student for the prevention of nosocomial infection and providing information for development of effective education program. Method: The subjects of the study were 167 senior nursing students. Reliability of recognition level was Cronbach' α=.9593 and reliability of performance level was Cronbach' α=.9574. Result: 1) The mean score of recognition level, the category of disinfection equipment management get the highest record, and followed by respiratory tract infection management, hand washing, personal hygiene management, urinary tract infection management and fluid therapy & catheter management. The mean score of performance level, the category of urinary tract infection management get the highest record, and followed by personal hygiene management, disinfection equipment management, hand washing, respiratory tract infection management, and fluid therapy & catheter management. 2) In all categories, recognition level are higher than performance level and There was positive correlation. 3) Recognition level was significant between college students and junior college students, performance level wasn't significant. Recognition level was significant for nosocomial infection related education experience. Conclusion: I suggest the study to generalize result more subjects with objective tool and the development an effective education program, prevention of nosocomial infection related.