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염색체이상 선별검사로서 태아 목덜미투명대 측정과 정맥관 도플러검사의 임상적 효용성
나성훈 ( Na Sung Hun ),구본상 ( Bon Sang Koo ) 대한산부인과학회 2009 Obstetrics & Gynecology Science Vol.52 No.1
Objective: To evaluate the efficiency of the measurement of fetal nuchal translucency (FNT) and ductus venosus Doppler examination (DV Doppler) as a screening tool for chromosomal abnormalities. Methods: FNT measurement and DV Doppler were performed in 950 pregnancies between 11+0~13+6 weeks` gestation. Chromosomal analysis was done when FNT was more than 3 mm and DV Doppler showed absent flow or reversed flow. The numbers of cases with increased FNT and abnormal DV Doppler were counted in the groups of abnormal and normal karyotype. Results: Data were available in 912 pregnancies. 11 pregnancies showed abnormal karyotype (1.2%). In the 11 cases with abnormal karyotype, increased FNT was found in 8 cases with 72.7% sensitivity and abnormal DV Doppler was found in 5 cases with 45.4% sensitivity. In the 901 cases with normal karyotype, increased FNT was found in 33 cases with 96.3% specificity and abnormal DV Doppler was found in 12 cases with 98.7% specificity. Positive predictive value was 19.5% in cases of increased FNT, 29.4% in cases of abnormal DV Doppler, and 44.4% in cases of increased FNT and abnormal DV Doppler both. Conclusion: There is no improvement in general screening for chromosomal abnormalities when FNT measurement and DV Doppler were performed together. But better specificity and positive predictive value for chromosomal abnormalities were found.
혈청 종양표지자 CA125가 극도로 상승한 자궁샘근육종
나성훈 ( Sung Hun Na ),이지연 ( Ji Yeon Lee ),이향아 ( Hyang Ah Lee ),황종윤 ( Jong Yun Hwang ),이동헌 ( Dong Heon Lee ) 대한산부인과학회 2009 Obstetrics & Gynecology Science Vol.52 No.2
We report a very high serum level of serum CA 125 in a patient with adenomyosis. Elevated serum CA 125 is useful for the management of patients with ovarian cancer but has also been associated with several benign conditions, including adenomyosis, uterine fibroids, pelvic inflammatory disease, pregnancy, menstruation, and endometriosis. Adenomyosis refers to the endometrial glands and stroma located deep within the myometrium. Here we report a patient with an elevated, rising serum CA 125 level over 1,000 IU/mL without any malignancy. Exploratory laparoscopy with LAVH (Laparoscopically assisted vaginal hysterectomy) and multiple peritoneal biopsies were performed. Histologically, the lesion was confirmed to be an adenomyosis. The level of serum CA 125 was 38 IU/mL on the fifth postoperative day.
3차원 초음파를 이용하여 임신 16주에 산전진단된 손가락 결손증
나성훈 ( Na Sung Hun ),구본상 ( Bon Sang Koo ) 대한산부인과학회 2008 Obstetrics & Gynecology Science Vol.51 No.12
Split hand malformation is a rare malformation with various presentations. The current report describes a case of split hand malformation detected using 2D and 3D ultrasonography at 16 weeks` gestation. 2D ultrasonographic findings were split hand malformation in the right hand and monodactyly in the left hand , and those findings were confirmed and further clarified using 3D imaging. Postmortem X ray findings were consistent with the ultrasonographic findings. We conclude that 3D ultrasonography can assist in clarifying 2D ultrasonography findings of hand malformations during the second trimester of pregnancy.
임신 중 마이크로파에 노출된 새끼 생쥐의 난소 유전자의 세대간 전달
황종윤 ( Jong Yun Hwang ),나성훈 ( Sung Hun Na ),이향아 ( Hyang Ah Lee ),이동헌 ( Dong Hun Lee ),이희제 ( Hee Jae Lee ),김송인 ( Song In Kim ),최용준 ( Yong Joon Choi ),황희용 ( Hee Yong Hwang ) 대한산부인과학회 2010 Obstetrics & Gynecology Science Vol.53 No.11
Objective: The aim of this study was to evaluate generational accumulation of murine fetal ovarian genes following prenatal exposure to 1.765-GHz microwave radiation. Methods: A 1.765-GHz microwave generator was used. Twenty pregnant ICR mice were divided into two groups: the microwave-exposed experimental (irradiated) group, and the sham-exposed (sham) group. On the fifth day post-mating, dam mice were exposed to microwave irradiation in the insulated cage for 8 hours each day. The remaining mice were treated in the same way. Second generation mice were raised for 8 weeks then classified into four groups for examination. We removed the neonatal ovaries on the seventh day after the third delivery. We investigated the expression of six genes in the ovaries: Tnfaip 8, TNFsf 12, Cfd, CCL 11, Zfp 74, and Brd 3. Real time reverse transcription-polymerase chain reaction was performed using total RNA extracted from the removed ovaries. Results: In the third-generation offspring, we detected some differences in ovarian gene expression between the first group and the fourth. Expression of CCL 11, and TNFsf 12 was decreased in the first group compared to the fourth group. Expression of Tnfaip 8, brd 3, Cfd, and Zfp 74 was higher in the first group than in the fourth group. We found differing results when we compared ovarian gene expression in mice of the second generation with those of the third. Conclusion: The results suggest that there is no generational accumulation of murine ovarian genes in offspring exposed to 1.765-GHz microwaves in the uterus.
미세배열법을 이용한 임신 중 1.765 GHz 마이크로파에 노출된 생쥐의 난소 유전자 발현분석
황종윤 ( Jong Yun Hwang ),나성훈 ( Sung Hun Na ),이향아 ( Hyang Ah Lee ),이동헌 ( Dong Hun Lee ),이희제 ( Hee Jae Lee ),김송인 ( Song In Kim ),전완주 ( Wan Joo Chun ),김성수 ( Sung Soo Kim ),김자경 ( Ja Kyoung Kim ),황희용 ( Hee Y 대한산부인과학회 2009 Obstetrics & Gynecology Science Vol.52 No.6
Objective: The aim of this study was to evaluate the effects on murine fetal ovarian gene expression of prenatal exposure to 1.765 GHz of microwave irradiation. Methods: Ten pregnant ICR mice were divided into two groups. At 5th days after mating, dam mice were exposed to microwave (SAR: 0.38~1.71 W/kg) in the insulated cage for 8 hours each day. The remaining mice were treated in the same way. Neonatal ovaries were removed for study 7 days after delivery. Microarray analysis was performed using total RNA extracted from the removed ovaries. We investigated the differences in ovarian gene expression between the groups. SPSS 12.0 was used for statistical analysis. P<0.05 was considered to be statistically significant. Results: The mean birth weight of the offspring in the irradiated group was significantly lower than that in the sham group (1.54±0.22 g vs. 1.60±0.21 g, P=0.012). The mean number of offspring per pregnancy in the irradiated group was significantly higher than in the sham group (13.60±0.70 vs. 11.40±2.17, P=0.009). We detected that in the irradiated ovaries, 14 genes were expressed at levels 2-fold higher than in the sham ovaries and 74 genes were expressed at levels 2-fold lower than in the sham ovaries. Conclusion: We found differences in fetal ovarian gene expression between the irradiated and sham groups. In the irradiated group, the Tnfaip8, TNFsf 12, Cfd, CCL 11, and Zfp74 genes were down-regulated and the Brd 3 gene was up-regulated.
혈청종양 표지자 CA 125가 극도로 상승한 경계성 난소종양
이지연 ( Ji Yeon Lee ),나성훈 ( Sung Hun Na ),이향아 ( Hyang Ah Lee ),황종윤 ( Jong Yun Hwang ),이동헌 ( Dong Heon Lee ) 대한산부인과학회 2009 Obstetrics & Gynecology Science Vol.52 No.1
Tumors of low malignant potential (also called borderline tumors) account for approximately 10% of malignant ovarian neoplasm. Borderline tumors have a much better prognosis and, because they are noninvasive, may be treated less radically than invasive ovarian cancer. The ability to distinguish borderline tumor from early stage malignant disease preoperatively considerably influences surgical treatment, and allows improved counseling of patients. CA 125 is a useful tumor marker in the diagnosis of malignant ovarian tumors. However, in the case of borderline ovarian tumor, the value of CA 125 as a diagnostic tool seems to be invalid. Herein, we report a case of borderline ovarian tumor with extremely elevated serum CA 125 level.
서정원(Jung-Won Seo),나성훈(Sung-Hun Na),권성태(Sung-Tae Kwon),권석진(Seok-Jin Kwon) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
Railway wheels and axles belong to the most critical components in railway vehicles. The service conditions of railway vehicles became more severe in recent years due to the increase of speed. Therefore, a more precise evaluation of wheelset life and safety has been requested. The residual stress on wheel is formed during the manufacturing process which includes a heat treatment, and then is changed by contact stress developed by wheel/rail contact and thermal stress induced by braking. Since the wheel is designed to maintain a constant thickness up to a certain limit for the reprofilling process which requires contact surface removal, wheel surface thickness is reduced by surface removal and wear over the life of a wheel. The residual stress of contact surface is redistributed due to surface removal and thickness variation. The objective of this paper is to estimate the variation and magnitude of the residual stress of railway wheel according to surface removal.
차경희 ( Kyung Hee Cha ),박선경 ( Sun Kyung Park ),현민경 ( Min Kyung Hyun ),나성훈 ( Sung Hun Na ),김유진 ( Eu Gene Kim ),심재윤 ( Jae Yoon Shim ),원혜성 ( Hye Sung Won ),이필량 ( Pil Ryang Lee ),김암 ( Ahm Kim ) 대한산부인과학회 2009 Obstetrics & Gynecology Science Vol.52 No.10
Objective: The aim of this study is to analyze the perinatal courses, fetal treatment and postnatal outcomes of fetal gastroschisis. Methods: A retrospective review of the medical records of 35 cases with a prenatal diagnosis of gastroschisis was conducted between March 1997 and April 2007. Results: Twenty-eight fetuses were followed up and 17 fetuses of them were born alive. Chromosomal study was performed in 22 fetuses and no abnormality was detected in them. Associated anomalies except for gastrointestinal anomalies were found in 12 (34.2%) cases: amniotic band syndrome (n=8), scoliosis (n=6), cleft lip (n=1), hydrops (n=1), hydrocephalus (n=1), acrania (n=1). In 4 fetuses, amnioinfusion and amnioexchange were performed simultaneously for treatment. Four cases (23.5%) were delivered by cesarean section. All neonates received corrected operation immediately after birth and 8 (47.1%) of them had postoperative complications. Three of them were died and the overall survival rate was 82.4%. The average length of hospital stays for the survivors was 36 days (2~210days). Conclusion: Fetal gastroschisis diagnosed prenatally has a good prognosis and high survival rates. The result of this study was not different from that of preexisting studies and will be a useful guide in counseling parents with a prenatal diagnosis of gastroschisis.