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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.
A Case of the Large Colon Impaction in an Adult Donkey
양재혁,박용수,Yang, J.,Park, Y.S. Korea National University of Agriculture and Fishe 2018 현장농업연구지 = Journal of practical agricultural resear Vol.20 No.2
The purpose of this report is to describe the diagnosed case of a large colonic impaction in an adult donkey. An adult female donkey (Equus africanus asinus; 6-years-old) was admitted to the Equine Hospital of Jeju Race Park with signs of anorexia, which had started 1 day previously. Clinical examination revealed: weak gut sounds, dehydration, and severe abdominal distension, but normal respiratory and heart rates and no signs of pain. Transrectal palpation identified an impaction in the colon. The patient was treated with nasogastric siphonage, fluid therapy, and nonsteroidal anti-inflammatory drugs. Over the course of a day, her condition worsened; she started trembling, could not stand, and 2 hours later she died. Upon necropsy, a vast amount of ingesta was found in the large colon, particularly in the left ventral colon. The cecum and small colon were normal. Eleven days prior to presentation, the stable management and diet of the donkey had changed. We suspect that the change of feed, reduced water consumption, and lack of exercise precipitated the illness. However, the exact cause of the sudden death of the donkey requires further investigation.
양재혁,Yang, J. Korea National University of Agriculture and Fishe 2020 현장농업연구지 = Journal of practical agricultural resear Vol.22 No.1
이 연구는 최초의 국내 말에서 수동면역부전을 다룬 것이다. 이 연구의 목적은 건강한 말과 아픈 말의 면역상태를 비교하는 것이다. 수동면역부전은 말에서 가장 흔한 면역결핍질환이다. 아픈말 22 마리와 건강한 말 18 마리를 검사키트(SNAP Foal IgG Test Kit)를 이용하여 수동면역부전을 진단하였다. 모든 성마는 정상적인 면역기능을 가지고 있었다(≥800 mg/㎗). 신생망아지는 22 마리 중 13 마리(59%; ∠800 mg/㎗)가 면역기능이 취약하였지만 치료 후 회복하여 생존하였다. 이 22 마리 중 9 마리는 면역기능이 강한 말(≥ 800 mg/㎗)로 혈중 IgG농도가 높아도 감염성 질환이 발생할 수 있다는 것을 보여준다. 폐사망아지는 모두 6 마리였고, 그중 4 마리는 감염성 질환이었다. 신생망아지 면역상태 검사를 통한 감염취약 정도의 조기진단 및 대응방안 마련으로 경주자원 활용율 제고와 보건관리 기술향상을 도모할 수 있다. 또한, 신생망아지의 감염성질환 조기 파악으로 향후 육성마의 체계적인 보건관리방안 마련에 일조할 수 있을 것으로 기대된다. The current study is the first paper on FPT(failure of passive transfer) of horse population in Korea. The object of this study was to comparison of immune status normal and patient horses. Failure of passive transfer is the most common immunodeficiency disorder of horses. Twenty-two foals and 18 horses from Jeju of the equine hospital were diagnosed with the SNAP Foal IgG Test Kit. All adult horses had normal immune functions (≥800 mg/dl). Thirteen of the 22 newborn babies (59%; ∠800 mg/dl) had a weak immune function but recovered and survived after treatment. Nine of these 22 are horses with strong immunity (≥800 mg/dl), indicating that high IgG concentrations in the blood can cause infectious diseases. There were a total of six dead, four of which were infectious diseases. In addition, early identification of infectious diseases in newborn foals is expected to help prepare systematic health management measures for the development of the disease.
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.