1.Diagnostic Imaging and Surgical Management of Complete Achilles Tendon Rupture in a Raccoon Dog
Sohwon BAE ; Seri HONG ; Eunji JEONG ; Woojin SHIN ; Son-Il PAK ; Soo-Young CHOI ; Sangjin AHN
Journal of Veterinary Clinics 2025;42(4):236-239
A raccoon dog (Nyctereutes procyonoides koreensis) was rescued with moderate Sarcoptes scabiei infestation and a pressure sore on the right metatarsal region. The animal exhibited non-weight-bearing lameness in the right hind limb. Radiographic examination revealed osteolytic changes in the right calcaneus. Musculoskeletal ultrasonography of the tarsal region revealed a markedly thickened and inhomogeneous gastrocnemius tendon (GTE), tendon sheath effusion, hyperechoic debris with acoustic shadowing, and an absence of tendon movement during dynamic evaluation—findings consistent with a chronic, severe tendon injury. Magnetic resonance imaging (MRI) confirmed a complete rupture of the right Achilles tendon complex, including the GTE and associated components at the calcaneal midportion. Given the chronic and irreversible nature of the lesion, a right pelvic limb amputation was performed. Postoperative recovery was uneventful. The raccoon dog adapted well to tripod locomotion during rehabilitation and was successfully released into the wild. This case underscores the importance of combining ultrasonography and MRI for accurate diagnosis and clinical decision-making in wildlife medicine and demonstrates that selected individuals with severe musculoskeletal injuries may be viable candidates for release following amputation and rehabilitation.
2.Isolation and genetic characterization of canine adenovirus type 2 variant from raccoon dog (Nyctereutes procynoide koresis) in Republic of Korea
Dong-Kun YANG ; Minuk KIM ; Sangjin AHN ; Hye Jeong LEE ; Subin OH ; Jungwon PARK ; Jong-Taek KIM ; Ju-Yeon LEE ; Yun Sang CHO
Korean Journal of Veterinary Research 2024;64(3):e21-
Canine adenovirus type 2 (CAV-2) is a common causative agent of respiratory disease in canines. There have been no reports of CAV-2 variants isolated from raccoon dogs. This study aims to investigate the biological and genetic characteristics of a novel Korean CAV-2 variant. Madin-Darby canine kidney cells were used to isolate the CAV-2 variant from 45 fecal swab samples. Diagnostic tools such as the cytopathic effect (CPE) assay, electron microscopy, polymerase chain reaction, and immunofluorescence and hemagglutination assays were used to confirm the presence of the CAV-2 isolate. A cross-virus neutralization assay was performed to verify the novelty of this CAV variant. Genetic analysis was performed using nucleotide sequences obtained through next-generation sequencing. The isolate was confirmed to be a CAV-2 variant based on the aforementioned methods and designated CAV2232. The number of bases in the fiber and E3 genes of CAV2232 were 1,626 and 414, respectively. Phylogenetic analysis of the fiber and E3 genes confirmed that CAV2232 was classified into a different clade from the known CAV-1 and CAV-2 strains. Mice inoculated with the CAV2232 vaccine developed high virus neutralization antibody titers of 1,024 (210) against CAV2232, while mice inoculated with CAV-1 and CAV-2 vaccines had low virus neutralization antibody titers of 12.9 (23.7) and 6.5 (22.7), respectively, against CAV2232. CAV2232 isolated from wild raccoon dog feces was classified as a novel CAV-2 variant. CAV2232 may therefore be used as an antigen for new vaccine development and serological investigations.
3.Isolation and genetic characterization of canine adenovirus type 2 variant from raccoon dog (Nyctereutes procynoide koresis) in Republic of Korea
Dong-Kun YANG ; Minuk KIM ; Sangjin AHN ; Hye Jeong LEE ; Subin OH ; Jungwon PARK ; Jong-Taek KIM ; Ju-Yeon LEE ; Yun Sang CHO
Korean Journal of Veterinary Research 2024;64(3):e21-
Canine adenovirus type 2 (CAV-2) is a common causative agent of respiratory disease in canines. There have been no reports of CAV-2 variants isolated from raccoon dogs. This study aims to investigate the biological and genetic characteristics of a novel Korean CAV-2 variant. Madin-Darby canine kidney cells were used to isolate the CAV-2 variant from 45 fecal swab samples. Diagnostic tools such as the cytopathic effect (CPE) assay, electron microscopy, polymerase chain reaction, and immunofluorescence and hemagglutination assays were used to confirm the presence of the CAV-2 isolate. A cross-virus neutralization assay was performed to verify the novelty of this CAV variant. Genetic analysis was performed using nucleotide sequences obtained through next-generation sequencing. The isolate was confirmed to be a CAV-2 variant based on the aforementioned methods and designated CAV2232. The number of bases in the fiber and E3 genes of CAV2232 were 1,626 and 414, respectively. Phylogenetic analysis of the fiber and E3 genes confirmed that CAV2232 was classified into a different clade from the known CAV-1 and CAV-2 strains. Mice inoculated with the CAV2232 vaccine developed high virus neutralization antibody titers of 1,024 (210) against CAV2232, while mice inoculated with CAV-1 and CAV-2 vaccines had low virus neutralization antibody titers of 12.9 (23.7) and 6.5 (22.7), respectively, against CAV2232. CAV2232 isolated from wild raccoon dog feces was classified as a novel CAV-2 variant. CAV2232 may therefore be used as an antigen for new vaccine development and serological investigations.
4.Isolation and genetic characterization of canine adenovirus type 2 variant from raccoon dog (Nyctereutes procynoide koresis) in Republic of Korea
Dong-Kun YANG ; Minuk KIM ; Sangjin AHN ; Hye Jeong LEE ; Subin OH ; Jungwon PARK ; Jong-Taek KIM ; Ju-Yeon LEE ; Yun Sang CHO
Korean Journal of Veterinary Research 2024;64(3):e21-
Canine adenovirus type 2 (CAV-2) is a common causative agent of respiratory disease in canines. There have been no reports of CAV-2 variants isolated from raccoon dogs. This study aims to investigate the biological and genetic characteristics of a novel Korean CAV-2 variant. Madin-Darby canine kidney cells were used to isolate the CAV-2 variant from 45 fecal swab samples. Diagnostic tools such as the cytopathic effect (CPE) assay, electron microscopy, polymerase chain reaction, and immunofluorescence and hemagglutination assays were used to confirm the presence of the CAV-2 isolate. A cross-virus neutralization assay was performed to verify the novelty of this CAV variant. Genetic analysis was performed using nucleotide sequences obtained through next-generation sequencing. The isolate was confirmed to be a CAV-2 variant based on the aforementioned methods and designated CAV2232. The number of bases in the fiber and E3 genes of CAV2232 were 1,626 and 414, respectively. Phylogenetic analysis of the fiber and E3 genes confirmed that CAV2232 was classified into a different clade from the known CAV-1 and CAV-2 strains. Mice inoculated with the CAV2232 vaccine developed high virus neutralization antibody titers of 1,024 (210) against CAV2232, while mice inoculated with CAV-1 and CAV-2 vaccines had low virus neutralization antibody titers of 12.9 (23.7) and 6.5 (22.7), respectively, against CAV2232. CAV2232 isolated from wild raccoon dog feces was classified as a novel CAV-2 variant. CAV2232 may therefore be used as an antigen for new vaccine development and serological investigations.
5.Isolation and genetic characterization of canine adenovirus type 2 variant from raccoon dog (Nyctereutes procynoide koresis) in Republic of Korea
Dong-Kun YANG ; Minuk KIM ; Sangjin AHN ; Hye Jeong LEE ; Subin OH ; Jungwon PARK ; Jong-Taek KIM ; Ju-Yeon LEE ; Yun Sang CHO
Korean Journal of Veterinary Research 2024;64(3):e21-
Canine adenovirus type 2 (CAV-2) is a common causative agent of respiratory disease in canines. There have been no reports of CAV-2 variants isolated from raccoon dogs. This study aims to investigate the biological and genetic characteristics of a novel Korean CAV-2 variant. Madin-Darby canine kidney cells were used to isolate the CAV-2 variant from 45 fecal swab samples. Diagnostic tools such as the cytopathic effect (CPE) assay, electron microscopy, polymerase chain reaction, and immunofluorescence and hemagglutination assays were used to confirm the presence of the CAV-2 isolate. A cross-virus neutralization assay was performed to verify the novelty of this CAV variant. Genetic analysis was performed using nucleotide sequences obtained through next-generation sequencing. The isolate was confirmed to be a CAV-2 variant based on the aforementioned methods and designated CAV2232. The number of bases in the fiber and E3 genes of CAV2232 were 1,626 and 414, respectively. Phylogenetic analysis of the fiber and E3 genes confirmed that CAV2232 was classified into a different clade from the known CAV-1 and CAV-2 strains. Mice inoculated with the CAV2232 vaccine developed high virus neutralization antibody titers of 1,024 (210) against CAV2232, while mice inoculated with CAV-1 and CAV-2 vaccines had low virus neutralization antibody titers of 12.9 (23.7) and 6.5 (22.7), respectively, against CAV2232. CAV2232 isolated from wild raccoon dog feces was classified as a novel CAV-2 variant. CAV2232 may therefore be used as an antigen for new vaccine development and serological investigations.
6.Isolation and genetic characterization of canine adenovirus type 2 variant from raccoon dog (Nyctereutes procynoide koresis) in Republic of Korea
Dong-Kun YANG ; Minuk KIM ; Sangjin AHN ; Hye Jeong LEE ; Subin OH ; Jungwon PARK ; Jong-Taek KIM ; Ju-Yeon LEE ; Yun Sang CHO
Korean Journal of Veterinary Research 2024;64(3):e21-
Canine adenovirus type 2 (CAV-2) is a common causative agent of respiratory disease in canines. There have been no reports of CAV-2 variants isolated from raccoon dogs. This study aims to investigate the biological and genetic characteristics of a novel Korean CAV-2 variant. Madin-Darby canine kidney cells were used to isolate the CAV-2 variant from 45 fecal swab samples. Diagnostic tools such as the cytopathic effect (CPE) assay, electron microscopy, polymerase chain reaction, and immunofluorescence and hemagglutination assays were used to confirm the presence of the CAV-2 isolate. A cross-virus neutralization assay was performed to verify the novelty of this CAV variant. Genetic analysis was performed using nucleotide sequences obtained through next-generation sequencing. The isolate was confirmed to be a CAV-2 variant based on the aforementioned methods and designated CAV2232. The number of bases in the fiber and E3 genes of CAV2232 were 1,626 and 414, respectively. Phylogenetic analysis of the fiber and E3 genes confirmed that CAV2232 was classified into a different clade from the known CAV-1 and CAV-2 strains. Mice inoculated with the CAV2232 vaccine developed high virus neutralization antibody titers of 1,024 (210) against CAV2232, while mice inoculated with CAV-1 and CAV-2 vaccines had low virus neutralization antibody titers of 12.9 (23.7) and 6.5 (22.7), respectively, against CAV2232. CAV2232 isolated from wild raccoon dog feces was classified as a novel CAV-2 variant. CAV2232 may therefore be used as an antigen for new vaccine development and serological investigations.
7.Successful Treatment of Traumatic Pneumothorax in a Korean Water Deer (Hydropotes inermis argyropus)
Sangjin AHN ; Younghye RO ; Sohwon BAE ; Kyuhyoung SHIM ; Eunji JEONG ; Joohee CHOI ; Woojin SHIN ; Sooyoung CHOI ; Jong-Taek KIM
Journal of Veterinary Clinics 2024;41(1):60-64
This case report documents the rescue, clinical presentation, treatment, and recovery of pneumothorax in a female Korean water deer (Hydropotes inermis argyropus) following a vehicular collision. Severe injuries, including a confirmed rib fracture, prompted an extensive treatment plan. Computed tomography imaging confirmed pneumothorax, particularly in the left lung, necessitating thoracocentesis to alleviate the accumulated air. Post-procedural monitoring demonstrated gradual recovery, with the water deer exhibiting restored appetite after the 2nd day of thoracocentesis. Successful recovery marked by natural pneumothorax resolution allowed for treatment cessation on the 13th day after injury.
8.Cross-Sectional and Skeletal Anatomy of Long-tailed Gorals (Naemorhedus caudatus) Using Imaging Evaluations
Sangjin AHN ; Woojin SHIN ; Yujin HAN ; Sohwon BAE ; Cheaun CHO ; Sooyoung CHOI ; Jong-Taek KIM
Journal of Veterinary Science 2023;24(4):e60-
Background:
Accurate diagnosis of diseases in animals is crucial for their treatment, and imaging evaluations such as radiographs, computed tomography (CT), and magnetic resonance imaging (MRI) are important tools for this purpose. However, a cross-sectional anatomical atlas of normal skeletal and internal organs of long-tailed gorals (Naemorhedus caudatus) has not yet been prepared for diagnosing their diseases.
Objectives:
The objective of this study was to create an anatomical atlas of gorals using CT and MRI, which are imaging techniques that have not been extensively studied in this type of wild animal in Korea.
Methods:
The researchers used CT and MRI to create an anatomical atlas of gorals, and selected 37 cross-sections from the head, thoracic, lumbar, and sacrum parts of gorals to produce an average cross-sectional anatomy atlas.
Results:
This study successfully created an anatomical atlas of gorals using CT and MRI.
Conclusions
The atlas provides valuable information for the diagnosis of diseases in gorals, which can improve their treatment and welfare. The study highlights the importance of developing cross-sectional anatomical atlases of gorals to diagnose and treat their diseases effectively.
10.Successful treatment of gastrocnemius muscle rupture in a long-tailed goral rescued from a live trap: a case report
Sangjin AHN ; Sooyoung CHOI ; Jong-Taek KIM
Journal of Veterinary Science 2022;23(3):e45-
We describe a case of gastrocnemius muscle rupture in a goral that got caught in a live trap set up to capture wild boars. We established a diagnostic method based on clinical signs and imaging examination findings, including magnetic resonance imaging for gastrocnemius muscle rupture with symptoms such as hindlimb lameness and plantigrade posture of unknown cause in wild animals. Although this condition is rare, this report will help veterinarians diagnose several diseases of the musculoskeletal and nervous systems in wild animals. This is the first report of successful diagnosis and treatment of gastrocnemius muscle rupture in gorals in Korea.

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