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Epidemiological Investigation of Equine Hindlimb Ataxia with Setaria digitata in South Korea
Hyeshin Hwang,Younghye Ro,Hyun-Kyoung Lee,Ji-hyeon Kim,Kyung-Hyun Lee,Eun-Jin Choi,You-Chan Bae,ByungJae So,Dohoon Kwon,Ho Kim,Inhyung Lee 대한수의학회 2022 Journal of Veterinary Science Vol.23 No.5
Background: Since 2013, the number of requests for diagnosis for horses based on neurological symptoms has increased rapidly in South Korea. The affected horses have commonly exhibited symptoms of acute seasonal hindlimb ataxia. A previous study from 2015–2016 identified Setaria digitata as the causative agent. Objectives: This study is an epidemiological investigation to find out risk factors related to the rapid increase in hindlimb ataxia of horses due to aberrant parasites in South Korea. Methods: An epidemiological investigation was conducted on 155 cohabiting horses in 41 horse ranches where the disease occurred. The surrounding environment was investigated at the disease-causing horse ranches (n = 41) and 20, randomly selected, non-infected ranches. Results: Hindlimb ataxia was confirmed in nine cohabiting horses; this was presumed to be caused by ectopic parasitism. Environments that mosquitoes inhabit, such as paddy fields within 2 km and less than 0.5 km from a river, had the greatest association with disease occurrence. Conclusions: Most horse ranches in South Korea are situated in favorable environments for mosquitoes. Moreover, the number of mosquitoes in the country has increased since 2013 due to climate change. Additional research is required; however, these data show that it is necessary to establish guidelines for the use of anthelmintic agents based on local factors in South Korea and disinfection of the environment to prevent disease outbreaks.
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Prevalence and treatment of gastric ulcers in Thoroughbred racehorses of Korea
Hyeshin Hwang,Hee-Jin Dong,Janet Han,Seongbeom Cho,Yongbaek Kim,Inhyung Lee 대한수의학회 2022 Journal of Veterinary Science Vol.23 No.2
Background: Gastric ulcer is one of the prevalent diseases in racehorses. However, it has not been recognized as important in Korea, and drugs used to treat gastric ulcers are included in the doping test list, so they are not allowed to be administered to racehorses in training. Objectives: This study was performed 1) to investigate the prevalence and the severity of gastric ulcers in Thoroughbred racehorses in Korea, 2) to confirm the therapeutic effect of ranitidine and omeprazole, and 3) to compare the efficacy between ranitidine and omeprazole. Methods: Forty-nine horses were randomly recruited, and gastroscopy was performed within two days after racing. Twelve horses with a sum grade of five or higher were randomly assigned to two treatment groups. Seven horses were administered ranitidine, and five horses were administered omeprazole. Follow-up gastroscopy was scheduled within one to five days after finishing the treatment. Results: The prevalence of gastric ulcer in Korean Thoroughbred racehorses after racing was 100%, and the grade was more severe in the non-glandular region than in the pyloric region. There was no correlation between the severity of gastric ulcer in the two regions. Omeprazole had a greater therapeutic effect than ranitidine. Conclusions: This study shows the importance of recognizing gastric ulcers as an important factor, and omeprazole as a possible treatment option in Korea, as it has been removed from the list of prohibited substances for racehorses. Thus, the use of omeprazole is currently recommended until one day before the race.
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김가원(Kim Kawon),황혜신(Hwang Hyeshin) 한국노인복지학회 2021 노인복지연구 Vol.76 No.1
본 연구의 목적은 지역사회에 거주하는 노인 1인가구의 연령 집단별 행복감을 파악하고, 연령대별 행복감에 영향을 미치는 요인을 규명하는 것이다. 조사 대상은 전국의 노인 1인가구 4,830명을 지역별 성, 연령에 따라 층화표집 하였으며, 연령대별로 65세~69세 730명, 70~74세 981명, 75~79세 1,405명, 80~84세 1,134명, 85세 이상 580명의 자료를 분석하였다. 분석결과 노인 1인가구의 행복감은 연령대별 유의미한 차이를 보였으며, 행복감 영향요인에 대한 다중회귀분석 결과 연령대별 특징을 알 수 있었다. 즉 주관적 건강상태가 좋을수록, 영양상태가 양호할수록, 자살생각 경험이 없는 경우, 경제상태 만족도가 높은 경우, 이웃과의 교류수준이 높은 경우 모든 연령대의 행복감을 높이는 공통 변인으로 나타났다. 반면에 여성인 경우, 복지관 및 종교시설 참여 빈도가 높은 경우 80세 이상 고령 노인의 행복감을 높이고 있었으며, 가족과의 교류 수준이 높을수록, 친목모임 참여 빈도가 높을수록 60~70대 노인의 행복감이 높았다. 본 연구결과를 토대로 노인 1인가구의 연령대별 특성을 고려하여 행복감 증진을 위한 사회복지 실천적, 정책적 개입 방안이 모색되어야 할 것이다. This study seeks to identify the happiness of single-person elderly households living in the community, and to identify the factors that affect the happiness of each age group. The subjects of the survey were 4,830 single-person elderly households nationwide based on their gender and age, and 65 years old by age group. The data were analyzed for 730 people aged 65-69, 981 people aged 70-74, 1,405 people aged 75-79, 1,134 people aged 80-84, and 580 people aged 85 and older. According to the analysis, the happiness of single-person elderly households differed significantly by age group, and the multiple regression analysis of the factors influencing happiness showed the characteristics of each age group. The better subjective health conditions, the better nutrition conditions, the more suicidal you have, the higher the satisfaction level of economic conditions, and the higher the level of exchange with neighbors, the more happy you are. On the other hand, the more frequently women participated in welfare centers and religious facilities, the higher the level of interaction with their families, the higher the frequency of social gatherings, the higher the happiness of the elderly in their 60s and 70s. Based on the results of this study, practical and policy interventions for social welfare should be sought to promote happiness in consideration of the characteristics of each age group of single-person elderly households.
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Diversity of the Gastric Microbiota in Thoroughbred Racehorses Having Gastric Ulcer
( Hee-jin Dong ),( Hungwui Ho ),( Hyeshin Hwang ),( Yongbaek Kim ),( Janet Han ),( Inhyung Lee ),( Seongbeom Cho ) 한국미생물 · 생명공학회 2016 Journal of microbiology and biotechnology Vol.26 No.4
Equine gastric ulcer syndrome is one of the most frequently reported diseases in thoroughbred racehorses. Although several risk factors for the development of gastric ulcers have been widely studied, investigation of microbiological factors has been limited. In this study, the presence of Helicobacter spp. and the gastric microbial communities of thoroughbred racehorses having mild to severe gastric ulcers were investigated. Although Helicobacter spp. were not detected using culture and PCR techniques from 52 gastric biopsies and 52 fecal samples, the genomic sequences of H. pylori and H. ganmani were detected using nextgeneration sequencing techniques from 2 out of 10 representative gastric samples. The gastric microbiota of horses was mainly composed of Firmicutes (50.0%), Proteobacteria (18.7%), Bacteroidetes (14.4%), and Actinobacteria (9.7%), but the proportion of each phylum varied among samples. There was no major difference in microbial composition among samples having mild to severe gastric ulcers. Using phylogenetic analysis, three distinct clusters were observed, and one cluster differed from the other two clusters in the frequency of feeding, amount of water consumption, and type of bedding. To the best of our knowledge, this is the first study to investigate the gastric microbiota of thoroughbred racehorses having gastric ulcer and to evaluate the microbial diversity in relation to the severity of gastric ulcer and management factors. This study is important for further exploration of the gastric microbiota in racehorses and is ultimately applicable to improving animal and human health.
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