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Thoroughbred 1세말에서 상업용 말 인플루엔자 백신접종 후 항체역가 추적
양재혁,박용수,Yang, J.H.,Park, Y.S. 국립한국농수산대학교 교육개발센터 2018 현장농업연구지 = Journal of practical agricultural resear Vol.20 No.1
The object of this study was to evaluate the change of antibody titers on virus strains after inoculation with commercial killed equine influenza (EI) vaccines in horses. Serum antibodies of 20 Thoroughbred yearlings were detected using hemagglutination inhibition test for 41 weeks. Second vaccination is inoculated 4 weeks after the initial vaccination. Most of antibody titers were not increased until 4 weeks after first vaccination. The highest titers were detected 6-10 weeks after vaccination. The titers were decreased slowly and maintained for 16 weeks after inoculation. We could barely detect the antibody 41 weeks after vaccination in most cases. Vaccine anergia were appeared in 3 horses (15%) but it depended on virus strains. A/Equine/La Plata/93(H3N8) strain that induce high and durable antibody responses was the most effective among three strains. This study presents the first comprehensive data on the endurance of antibody titers against EI. Our data also suggests that yearlings should be inoculated three times in order to maintaining optimal antibody titers against EI. We speculate the causes of anergia were vaccine break down or individual specificity. Further research is needed to investigate immunological unresponsiveness. This was the first study on strain of equine vaccine in Korea.
Evaluation on Blood Chemistry in a Thoroughbred Neonate (1-day old) with Congenital Torticollis
양재혁,Yang, J.H. Korea National University of Agriculture and Fishe 2019 현장농업연구지 = Journal of practical agricultural resear Vol.21 No.2
There have been no reports on the laboratory screening of congenital torticollis in equine medicine. The purpose of this study was to evaluate the blood chemistry of a newborn female foal with congenital torticollis. The filly was born after a normal parturition period, and the clinical pathology results were as follows: biochemistry of the plasma showed significantly higher levels of CK, LDH, and Na than those in a normal foal. However, Cl level was remarkably lower than that of the control. In conclusion, the cells in the neck muscles influenced the clinical pathological value in the neonate. A disorder of the muscles as well as the bone problem, such as the cervical vertebrae, may have caused congenital torticollis. To our knowledge, this is the first report detailing the clinical pathology results in a newborn foal with torticollis. These laboratory results can be used as a reference for interpretation of pathology results in foals.
다운증후군의 산전진단을 위한 다양한 선별검사의 기여율 비교 - 산전 및 신생아때 진단된 96 례 분석 -
한정열(J . Y . Han),김문영(Y. M . Kim),조준형(J . H . Cho),안현경(H . K . Ahn),류현미(H . M . Ryu),김진미(J . M . Kim),김영미(Y . M . Kim),박소연(S . Y . Park),한혜경(H . K . Han),이영호(Y . H . Lee),양재혁(J . H . Yang) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.10
Objective : The purpose of this study was comparison of the contribution rate for prenatal diagnosis of Down syndrome using various screening methods (Age: greater than or equal to 35 years old, Serum markers: Triple test, Ultrasonography: abnormal sonographic findings, nuchal translucency, nuchal fold thickness).Methods : Total 96 cases of Down syndrome, prenatally or postnatally diagnosed between Jan. 1990 and Sept. 1999, made up the study population. We got the contribution rate of various prenatal screening methods of down syndrome, and obtained the efficiency of various screening program applied for last 10 years. Results : The frequencies of Down syndrome confirmed in prenatal and postnatal were 68 (71%) and 28 (29%) in respectively. The mean age of mother of Down syndrome fetus was 33.0±5.7 years old. The frequency rate of Down syndrome was 0.4, 1.3, 0.7, 0.7, 1.6, 0.7, 1.2, 2.2, 2.0 and 2.3 a 1,000 deliveries from 1990 to 1999 (Y= 0.28+0.18 year, P=0.01). The percentage of Down syndrome diagnosed prenatally was 0 (0/2), 43 (3/7), 50 (2/4), 25 (1/4), 56 (5/9), 100 (5/5), 71 (5/7), 78 (14/18), 78 (14/18) and 89 (17/19) from 1990 to 1999 (Y= 12.9+8.9 year, P=0.000). The contribution rate of prenatal diagnosis for Down syndrome was 30.2±5.6% by age, 18.2±3.4% by triple test and 51.7±6.3% by ultrasonography, and was significantly difference among each screen methods (P=0.008). Conclusions : This study shows that our prenatal screening program is highly effective to detect Down syndrome and especially ultrasonographic findings (abnormal sono findings, Nuchal translucency, Nuchal fold thickness) may be more important than that of age or Triple test to detect the Down syndrome prenatally.
쌍태임신시 태반유형 및 제대부착형태가 성장 불일치에 미치는 영향에 관한 연구
안현경(H . K . Ahn),양광문(K . M . Yang),홍성란(S . R . Hong),류현미(H . M . Rheu),김문영(M . Y . Kim),한정열(J . R . Han),최규홍(K . H . Choi),양재혁(J . H . Yang),김은성(E . S . Kim) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.11
Object : The purpose of the study is to determine whether the type of placentation and abnormal cord insertion can affect discordant growth in twin gestation. Materials and methods : We investigated 422 sets of structually normal twin delivered at our twin clinic after 26 weeks of gestation from 1995-1997. All cases of placenta were examined for pathologic evaluation during the study periods. The type of placentation was divided into four groups: monochorionic monoamniotic placenta (n=4); monochorionic diamniotic placenta (n=62); dichorionic diamniotic fused placenta (n=163); dichorionic diamniotic separate placenta(n=193). Cord insertion was also divided into three groups: both side abnormal insertion (n=17); either side abnormal insertion (n=101); both side normal insertion (n=304). Intertwin weight discordancy was classified as mild form (15-25%) and severe form (>25%) by the degree of the discrepancy. Results : The results were as follows; 1. Of these 422 twin sets, 132 (31%) consisted of twin discordancy in weight by 15% or greater (mild form 19%, severe form 12%). 2. There are no significant difference in the frequencies of discordancy between MC twins and DC twins (31.8% vs 31.2%, p=0.97). 3. The prevalence of abnormal cord insertion was 16% and much more frequent in MC placenta than DC placenta (26.5% vs 14%, p=0.001). 4. Although mean gestational age at delivery and mean birth weight were significantly lower in either side abnormal cord insertion group than both side normal cord insertion group (35.7 vs 36.7weeks, p=0.004 : 2317 vs 2475gm, p=0.01), no difference in the frequency of discordancy was observed in these two groups (37.6% vs 29%, p=0.1). Conclusion : The type of placentation and/or abnormal cord insertion were not revealed to affect discordant growth in twin gestation.
안현경(H . K . Ahn),김은성(E . S . Kim),한정열(J . Y . Han),김문영(M . Y . Kim),류현미(H . M . Ryu),최규홍(K . H . Choi),양재혁(J . H . Yang) 대한산부인과학회 2001 Obstetrics & Gynecology Science Vol.44 No.12
Objective : To review the cases of peripartum hysterectomy in women delivered at a Hospital. Methods : This is a retrospective study of all cases of emergency peripartum hysterectomy performed between August 1994 and July 1998. Results : During the study period a total of 35 emergency peripartum hysterectomy was performed. The overall incidence was 0.9/1,000 deliveries. The mean age of patients was 33.7±0.8 years old, the median gravidity was 5 and mean gestational age was 37.7±0.4 weeks. The main indications for hysterectomy were massive bleeding due to abnormal placental adhesions or uterine atony. There was no maternal death, However, maternal morbidity was 34.3%. Conclusions : The data show abnormal adherent placentation as the primary cause for gravid hysterectomy. The data illustrate how the incidence of emergency peripartum hysterectomy increases significantly with increasing parity, especially when influenced by a current placenta previa or a prior cesarean section. Maternal morbidyity remained high although no maternal deaths occurred.
염색체 이수성질환을 선별하기 위한 삼중 표지물질 검사의 성과에 관한 연구
최용관(Y. K. Choi),김문영(M. Y. Kim),한정열(J. Y. Han),류현미(H. M. Ryu),양재혁(J. H. Yang),김은성(E. S. Kim),이홍복(H. B. Lee),한인수(E .S. Kim),고명인(M. I. Ko),한호원(H. W. Han) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.9
Objective: To evaluate the effectiveness of a screening protocol using a combination of maternal age and three biochemical markers for the antenatal detection of fetal chromosomal aneuploidy Materials and methods: In our retrospective, 5,308 women who were screened for Down syndrome at second trimester of pregnancy and delivered between March 1994 and February 1996 at Samsung Cheil hospital were studied. Also, 1,378 women were simultaneously studied for screening for Edward syndrome between November 1995 and February 1996. According to maternal age and the concentration of measured maternal serum markers (α-fetoprotein, unconjugated E3, hCG), the risk ratio of Down syndrome and Edward syndrome were calculated by α-software V. 4.1. The screening positive women were performed amniocentesis for fetal karyotyping after genetic counseling. Results: The average age was 28 years old. The average of the geatational weeks was 16.3 weeks. The followings are equations of expected median for each maternal serum markers. AFP(ng/ml)=10(0.474+0.0652xGestational week) uE3(nmol/L)=10(-0.852+0.0932xGestational week) hCH(IU/ml)=217,523/[1+Exp(5.62+0.17xGestational week)] Among 5,308 cases, screen positive was in 248 cases(4.7%). But amniocentesis was performed in 126 cases(2.4%). Down syndrome was detected in 7 cases. The difference of the prevalance rate for Down syndrome between younger than 35 years old (1.2/1,000) and older than or equal to 35 years old(6.7/1,000) was statistically significant (P=0.035). However, in screen negative cases, Down syndrome was detected in 2cases. Overall, the detection rate, false positive for Down syndrome were 77.8%, 4.5% respectively and the ratio for OAPR was 1:35. In Edward syndrome, screen positive was in 4 cases(0.3%). Edward syndrome was confirmed in 2 cases by amniocentesis The detection rate, false positive for Edward syndrome were 100%, 0.1 % and the ratio for OAPR was 1:2. Conclusion: The prenatal screening test by the combination of maternal age and the concentration of maternal serum markers was effective to detect Down syndrom and Edward syndrome at second trimester of pregnancy.