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Han D, Jung DI. Gallbladder atrophy associated with pancreatitis: Clinical and advanced imaging diagnosis in a dog. VET MED-CZECH 2023; 68:435-442. [PMID: 38163047 PMCID: PMC10755810 DOI: 10.17221/76/2023-vetmed] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 10/20/2023] [Indexed: 01/03/2024] Open
Abstract
Gallbladder atrophy (GBA) is characterised by a reduction in the size and volume of the gallbladder. In human medicine, it is well-established that GBA frequently occurs together with pathologies affecting the gallbladder and pancreas. However, to the best of our knowledge, there is currently a dearth of reported cases of GBA in dogs within the veterinary field. In this study, we present a case report of GBA in a 7-year-old Yorkshire Terrier. The diagnosis of GBA was confirmed using abdominal ultrasonography and advanced imaging techniques, including computed tomography, which were performed over a 4-year period. The patient initially presented with predominantly gastrointestinal symptoms, which were subsequently diagnosed and treated as pancreatitis. Concurrently, a gallbladder nodule and an anomalous structure suspected to be cholelithiasis were identified. However, during the 4-year follow-up, the gallbladder structure regressed, leaving only the presence of the gallbladder nodule. Notably, cholecystectomy was not performed, and apart from pancreatitis-related symptoms, the patient did not show any gallbladder-related problems throughout the spontaneous atrophic process. Based on these findings, we propose that the observed GBA was likely induced by cholecystitis associated with pancreatitis. This case underscores the significance of considering GBA as a potential diagnosis in canine patients presenting with pancreatitis and gastrointestinal symptoms. Furthermore, it highlights the value of comprehensive diagnostic imaging in accurately determining the underlying cause of these symptoms.
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Affiliation(s)
- Donghyun Han
- Choi Youngmin Animal Medical Center, Seoul, Republic of Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
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2
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Kim JY, Hwang TS, Jung DI, Song KH, Song JH. Case report: Lymphocytic-plasmacytic and eosinophilic enterocolitis presented with marked eosinophilia and basophilia in a cat. Front Vet Sci 2023; 10:1153702. [PMID: 37732139 PMCID: PMC10507168 DOI: 10.3389/fvets.2023.1153702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 08/23/2023] [Indexed: 09/22/2023] Open
Abstract
Inflammatory bowel disease is a common condition in cats, characterized by recurring gastrointestinal signs with histologic evidence of intestinal inflammation. A 9-month-old neutered male Sphynx cat was presented with a 5-week history of vomiting and hematochezia. Conservative patient management with a therapeutic gastrointestinal formula, antibiotics, and antiemetics resulted in a positive response to treatment, with relapse of signs when the medications were discontinued. A new finding of marked eosinophilia and basophilia was identified 3 months after the initial presentation. Colonoscopy revealed cecal erosions and a surgical biopsy with histopathology confirmed a diagnosis of lymphocytic-plasmacytic and eosinophilic enterocolitis. For this diagnosis, the patient was treated with prednisolone, tylosin, and metronidazole. Antibiotics were gradually tapered as the cat showed clinical improvement. The patient showed resolution of the gastrointestinal signs, and the numbers of eosinophils and basophils returned within the reference range 8 weeks after the treatment began. Basophilia and eosinophilia has been reported in conjunction with feline T-cell lymphoma. However, marked basophilia accompanying eosinophilia is extremely rare in cats with inflammatory bowel disease. We herein provide clinical details, including ultrasonography, endoscopy, histopathology, and disease course of feline lymphocytic-plasmacytic and eosinophilic enterocolitis with marked basophilia and eosinophilia. This case highlights the importance of considering enteritis as potential diagnoses when eosinophilia and basophilia are concurrently observed in cats.
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Affiliation(s)
- Jin-Young Kim
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Tae-Sung Hwang
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Kun-Ho Song
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, Daejeon, Republic of Korea
| | - Joong-Hyun Song
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, Daejeon, Republic of Korea
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3
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Jung R, Choi J, Bae H, Jung DI, Cho KO, Yu D. Siewert-Kartagener's syndrome in a dog. J Vet Sci 2023; 24:e57. [PMID: 37532300 PMCID: PMC10404705 DOI: 10.4142/jvs.23029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 05/02/2023] [Accepted: 06/05/2023] [Indexed: 08/04/2023] Open
Abstract
Siewert-Kartagener's syndrome, a type of primary ciliary dyskinesia, is a complex disease comprising situs inversus, rhinosinusitis, and bronchiectasis. Situs inversus totalis is a condition in which all organs in the thoracic and abdominal cavities are reversed. Furthermore, primary ciliary dyskinesia, an autosomal genetic disease, may coexist with situs inversus totalis. Reports on Siewert-Kartagener's syndrome in veterinary medicine are limited. We report a rare case of primary ciliary dyskinesia with Siewert-Kartagener's syndrome in a dog, concurrently infected with canine distemper virus and type-2 adenovirus. This case highlights that situs inversus totalis can cause primary ciliary dyskinesia, and concurrent infections are possible.
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Affiliation(s)
- Rankyung Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Jihye Choi
- College of Veterinary Medicine, Seoul National University, Seoul 08826, Korea
| | - Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Kyoung-Oh Cho
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea.
| | - DoHyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea.
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4
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Song JH, Hwang TS, Jung DI, Jeong HJ, Huh C. Successful Management of and Recovery from Multiple Cranial Nerve Palsies following Surgical Ventral Stabilization in a Dog with Atlantoaxial Subluxation. Vet Sci 2022; 9:vetsci9070322. [PMID: 35878339 PMCID: PMC9315569 DOI: 10.3390/vetsci9070322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 11/16/2022] Open
Abstract
A 4-year-old spayed female miniature poodle dog presented with a 1-week history of acute tetraparesis. A neurological examination revealed severe neck pain and non-ambulatory tetraparesis. Computed tomography and magnetic resonance imaging showed hypoplastic dens with moderate compression of the spinal cord at C1–C2. The atlantoaxial subluxation (AAS) was surgically stabilized using ventral pins and polymethylmethacrylate (PMMA) cement. On the second postoperative day, the patient showed significant dyspnea, and aspiration pneumonia was identified on radiography. The patient exhibited dysphagia with abnormal food prehension and an inability to protrude the tongue, with no gag reflex. We tentatively diagnosed the patient with multiple cranial nerve (CN) palsies involving the 9th, 10th, and 12th CNs following surgical ventral stabilization. The protruding cranial part of the implanted PMMA cement, which could mechanically contribute to the corresponding CNs dysfunction, was surgically removed. The symptoms gradually improved, and the patient showed normal tongue movement 1 month after revision surgery. In conclusion, we report herein a canine case of multiple CN palsies following ventral stabilization surgery for AAS. The experience gained from this case suggests an optimized management plan for postoperative neurological complications associated with ventral stabilization.
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Affiliation(s)
- Joong-Hyun Song
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
- Correspondence: ; Tel.: +82-42-821-6756
| | - Tae-Sung Hwang
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea; (T.-S.H.); (D.-I.J.)
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea; (T.-S.H.); (D.-I.J.)
| | - Hee-Jun Jeong
- Ulsan S Animal Medical Center, Ulsan 44726, Korea; (H.-J.J.); (C.H.)
| | - Chan Huh
- Ulsan S Animal Medical Center, Ulsan 44726, Korea; (H.-J.J.); (C.H.)
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Kim YJ, Bae H, Shin SW, Cho AR, Jeon Y, Hwang TS, Jung DI, Kim DY, Kang JG, Yu D. Two Clinical Cases of Feline Hemoplasmosis in Korea. Korean J Parasitol 2022; 60:127-131. [PMID: 35500894 PMCID: PMC9058274 DOI: 10.3347/kjp.2022.60.2.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 04/10/2022] [Indexed: 11/23/2022]
Abstract
Feline hemotropic mycoplasmosis (hemoplasmosis) is an infection of the red blood cells caused by the Mycoplasma haemofelis (Mhf), Candidatus Mycoplasma haemominutum (CMhm), and Candidatus Mycoplasma turicensis (CMt). The existence of Mhf, CMhm, and CMt has been demonstrated in feral cats in Korea using molecular methods, but no clinical cases have yet been reported. This study reports 2 clinical cases of hemotropic mycoplasmosis caused by CMhm and CMt in 2 anemic cats. The first case was a client-owned intact female domestic shorthair cat that presented with fever, pale mucous membranes, and normocytic normochromic non-regenerative anemia. Prior to referral, an immunosuppressive prednisolone dose was administered at the local veterinary clinic for 1 month. The cat was diagnosed with high-grade alimentary lymphoma. Organisms were found on the surface of the red blood cells on blood smear examination. The second case was of a rescued cat that presented with dehydration and fever. The cat had normocytic normochromic non-regenerative anemia. Necropsy revealed concurrent feline infectious peritonitis. Polymerase chain reaction assay targeting 16S rRNA revealed CMhm infection in case 1 and dual infection of CMhm and CMt in case 2. Normocytic normochromic non-regenerative anemia was observed in both cats before and during the management of the systemic inflammation. This is the first clinical case report in Korea to demonstrate CMhm and CMt infections in symptomatic cats.
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Affiliation(s)
- Young Ju Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
| | - Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
| | - Sun Woo Shin
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
| | - ARom Cho
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
| | - Yeseul Jeon
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
| | - Tae-Sung Hwang
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
| | - Dae Young Kim
- Veterinary Medical Diagnostic Laboratory, College of Veterinary Medicine, University of Missouri, Columbia, MO, 65211,
USA
| | - Jun-Gu Kang
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531,
Korea
- Corresponding authors (; )
| | - DoHyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828,
Korea
- Corresponding authors (; )
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Cho AR, Bae H, Shin S, Kim Y, Jeon Y, Hyun JE, Cho KW, Jung DI, Kim DY, Yu D. Sterile Neutrophilic Dermatosis (Sweet's Syndrome) Associated With Systemic Inflammatory Response Syndrome in a Maltese Dog: A Case Report. Front Vet Sci 2022; 9:837942. [PMID: 35387148 PMCID: PMC8978542 DOI: 10.3389/fvets.2022.837942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Accepted: 02/18/2022] [Indexed: 11/13/2022] Open
Abstract
We report a rare case of sterile neutrophilic dermatosis (Sweet's syndrome) accompanied by systemic inflammatory response syndrome. A 5-year-old, neutered male Maltese dog presented with extensive crusts on the whole-body surface and multifocal erosions and plaques on the four limbs. The lesions had been present for two months and did not respond to antibiotics before the presentation. In addition, the dog was lethargic, anorexic, and febrile, with joint swelling. A clinicopathologic analysis revealed neutrophilic leukocytosis with left shift and increased C-reactive protein level. Furthermore, a histopathological examination showed moderate to severe inflammatory infiltrates consisting predominantly of neutrophils from the superficial to the deep dermis. There was no evidence of bacterial or fungal infections, and autoimmune diseases, such as pemphigus, systemic lupus erythematosus, and erythema multiforme, were excluded. Sweet's syndrome, a rare skin disorder, associated with systemic inflammation was diagnosed, and the cutaneous lesions and systemic inflammation disappeared after prolonged steroid administration.
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Affiliation(s)
- ARom Cho
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Sunwoo Shin
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Youngju Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Yeseul Jeon
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Jae-Eun Hyun
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Kyu-Woan Cho
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Dae Young Kim
- College of Veterinary Medicine, University of Missouri, Columbia, MO, United States
| | - DoHyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
- *Correspondence: DoHyeon Yu
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Bae H, Hwang TS, Hee-Chun L, Jung DI, Kim SH, Yu D. Successful treatment of canine infective endocarditis caused by Bacillus amyloliquefaciens. Vet Q 2022; 42:41-47. [PMID: 35068361 PMCID: PMC8843097 DOI: 10.1080/01652176.2022.2033879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Bacillus amyloliquefaciens is a gram-positive bacterial species that is utilised as a probiotic in humans and animals. There are no reports of infective endocarditis (IE) in dogs. An 8-year-old, spayed, female Maltese presented with a 1-month history of fever, depression, weight loss, and hindlimb lameness. Laboratory test results indicated non-regenerative anaemia, neutrophilia, hyperglobulinemia, and proteinuria. Echocardiography revealed vegetation on the septal leaflet of the mitral valve and thromboemboli in the left atrium. Consecutive blood culture results revealed that the blood samples were consistently positive for Bacillus amyloliquefaciens, which is generally considered a probiotic bacterial species for animals. Broad-spectrum antibiotics (amoxicillin-clavulanic acid and cefotaxime) and anticoagulants (clopidogrel and rivaroxaban) were administered for 4 months. The clinical signs were responsive to antibiotic treatment. After 4 months, the dog was no longer febrile and the size of the thromboemboli in the left atrium had decreased. Bacteria were no longer isolated in blood cultures after antibiotic therapy. To the best of our knowledge, this is the first case report of canine IE caused by bactaeremic infection with Bacillus amyloliquefaciens.
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Affiliation(s)
- Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Tae-Sung Hwang
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Lee Hee-Chun
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - Sang-Hyun Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
| | - DoHyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea
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Kim J, Bae H, Ahn S, Shin S, Cho AR, Cho KW, Jung DI, Yu D. Cell-Free DNA as a Diagnostic and Prognostic Biomarker in Dogs With Tumors. Front Vet Sci 2021; 8:735682. [PMID: 34604371 PMCID: PMC8481682 DOI: 10.3389/fvets.2021.735682] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Accepted: 08/18/2021] [Indexed: 12/12/2022] Open
Abstract
Cell-free DNA (cfDNA) is derived from apoptosis/necrosis, active cellular secretion, and lysis of circulating cancer cells or micrometastases. In humans, cfDNA is widely used in cancer diagnosis, but veterinary research has yet to be actively conducted to establish it as a cancer biomarker. This retrospective study analyzed cfDNA levels in samples collected from dogs with neoplastic disease (n = 38), clinically ill dogs without neoplasia (n = 47), and healthy dogs (n = 35). cfDNA levels and clinical data were compared among groups, and prognostic analyses were performed within the neoplastic group. Furthermore, continual cfDNA measurements were performed during the chemotherapy of six dogs with lymphoma. Dogs with neoplasia showed significantly higher cfDNA concentrations than dogs without neoplasm, and the cfDNA oncentration in the lymphoid neoplasia group was significantly elevated among all neoplastic groups. Dogs with neoplasia and a plasma cfDNA concentration above 1,247.5 μg/L had shorter survival rates than those with levels below this threshold (26.5 vs. 86.1%, respectively, P < 0.05). In cases with complete remission in response to chemotherapy, the cfDNA concentration was significantly decreased compared with the first visit, whereas the cfDNA concentration was increased in cases with disease progression or death. Interestingly, a significant correlation was found between lymph node diameter and cfDNA concentration in dogs with multicentric lymphoma (R2 = 0.26, P < 0.01). These data suggest that changes in cfDNA concentration could be used as a diagnostic biomarker for canine neoplasia. Furthermore, increased plasma DNA levels might be associated with shorter survival time, and cfDNA concentrations may reflect the response to chemotherapy.
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Affiliation(s)
- Jihu Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Soomin Ahn
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Sunwoo Shin
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - ARom Cho
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Kyu-Woan Cho
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - DoHyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
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Ahn S, Bae H, Kim J, Kim S, Park J, Kim SK, Jung DI, Yu D. Comparison of clinical and inflammatory parameters in dogs with pyometra before and after ovariohysterectomy. Can J Vet Res 2021; 85:271-278. [PMID: 34602731 PMCID: PMC8451705] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/15/2021] [Indexed: 06/13/2023]
Abstract
This study aimed to identify potential biomarkers of canine pyometra and their correlations with clinical parameters. First, 90 dogs with pyometra and 26 healthy female dogs were compared. Then, paired samples (before and after ovariohysterectomy) from 22 dogs with pyometra and 9 healthy controls from the initial cohort were compared. Concentrations of acute inflammatory proteins, C-reactive protein (CRP) and serum amyloid A (SAA), and cell-free DNA (cfDNA), were significantly higher in dogs with pyometra than in clinically healthy dogs. Cell-free DNA was the most sensitive biomarker for systemic inflammation, based on the receiver operating characteristic curve analysis (area under the curve = 0.959). In addition, cfDNA and CRP were significantly associated with inflammation and organ injury-related clinical parameters. Following the surgical removal of the inflamed uterus, interleukin-6 (IL-6), high-mobility group box 1 (HMGB1), and procalcitonin (PCT) significantly decreased, whereas changes in CRP, SAA, and cfDNA were not significant. These findings indicate that cfDNA, CRP, and SAA are potential clinical biomarkers of systemic inflammation in dogs with pyometra and PCT, IL-6, and HMGB1 are potential biomarkers of clinical recovery.
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Affiliation(s)
- Soomin Ahn
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
| | - Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
| | - Jihu Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
| | - Suhee Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
| | - Jinho Park
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
| | - Sang-Ki Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
| | - DoHyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Republic of Korea (Soomin Ahn, Hyeona Bae, Jihu Kim, DoHyeon Yu); Gyeongsang National University Hospital, Jinju 52727, Republic of Korea (Suhee Kim); College of Veterinary Medicine, Jeonbuk National University, Iksan 54596, Republic of Korea (Jinho Park); Department of Companion and Laboratory Animal Science, College of Industrial Science, Kongju National University, Yesan 32439, Republic of Korea (Sang-Ki Kim)
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Yun T, Koo Y, Kim H, Lee W, Kim S, Jung DI, Yang MP, Kang BT. Case Report: Long-Term Chemotherapy With Hydroxyurea and Prednisolone in a Cat With a Meningioma: Correlation of FDG Uptake and Tumor Grade Assessed by Histopathology and Expression of Ki-67 and p53. Front Vet Sci 2021; 8:576839. [PMID: 33575281 PMCID: PMC7870713 DOI: 10.3389/fvets.2021.576839] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 01/05/2021] [Indexed: 01/10/2023] Open
Abstract
A 15.5-year-old, neutered, male, domestic shorthair cat was presented with neurologic dysfunctions. At presentation, an obtunded mental status and vestibular ataxia were identified. On neurologic examination, postural reactions were decreased-to-absent in all four limbs, and pupillary light reflexes showed bilaterally delayed results. Magnetic resonance imaging was performed, and a demarcated lesion was identified in the third ventricle. The cat was tentatively diagnosed with a brain tumor, which was suspected to be a meningioma. The cat was treated with hydroxyurea and prednisolone. Mental status was considered more alert, and ataxia improved following treatment. On the 106th day after the commencement of treatment, a 18F-fluorodeoxyglucose (FDG)-positron emission tomography (PET) scan was performed. On the PET images, a hypermetabolic region was found in the lesion. The average standardized uptake value of FDG was 2.47, and the tumor-to-normal-tissue ratio was 1.25. The cat died 408 days following the commencement of treatment, and a grade 1 meningioma was confirmed by postmortem histopathology. Immunohistochemistry for Ki-67 and p53 was performed. The labeling indices of Ki-67 and p53 were 2.56 and 0%, respectively. This case shows that chemotherapy with hydroxyurea and prednisolone may be considered in the treatment of feline meningiomas. Furthermore, this is the first case describing the application of FDG-PET to visualize a naturally occurring meningioma in a cat.
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Affiliation(s)
- Taesik Yun
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Yoonhoi Koo
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Hakhyun Kim
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Wonguk Lee
- Department of Nuclear Medicine, Chungbuk National University Hospital, Cheongju, South Korea
| | - Soochong Kim
- Department of Veterinary Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Mhan-Pyo Yang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Byeong-Teck Kang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
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Bae H, Kim J, Chun D, Jung DI, Park J, Young Kim D, Yu D. Idiopathic ulcerative dermatitis in a cat with feline infectious peritonitis. Vet Med Sci 2020; 7:572-576. [PMID: 33382165 PMCID: PMC8025631 DOI: 10.1002/vms3.396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 10/02/2020] [Accepted: 11/02/2020] [Indexed: 11/09/2022] Open
Abstract
A 1-year-old, castrated, male, domestic short-haired cat with pruritic, multifocal, crusted ulceration of the skin over the dorsal aspect of the neck and scapulae was presented. The cat also had a history of depression and anorexia. A causative agent for the lesion was not identified on a general dermatological examination. Histopathology revealed diffuse epidermal ulceration and loss with replacement by neutrophilic inflammation and necrotic debris. Idiopathic ulcerative dermatitis (IUD) was diagnosed based on history, physical examination and histopathology. To prevent self-trauma and secondary bacterial infection, light bandages and glucocorticoid ointment were applied. After a month of management, the lesions markedly improved. Approximately 3 months after the initial presentation, the cat died; necropsy confirmed an IUD and non-effusive (dry form) feline infectious peritonitis (FIP). This report describes a rare case of IUD in a cat with concurrent FIP. However, no association between IUD and FIP was found.
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Affiliation(s)
- Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Jihu Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Daseul Chun
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Jinho Park
- College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Dae Young Kim
- College of Veterinary Medicine, University of Missouri, Columbia, MO, USA
| | - DoHyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
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Koo Y, Kim H, Yun T, Jung DI, Kang JH, Chang D, Na KJ, Yang MP, Kang BT. Evaluation of serum high-mobility group box 1 concentration in dogs with epilepsy: A case-control study. J Vet Intern Med 2020; 34:2545-2554. [PMID: 33150666 PMCID: PMC7694863 DOI: 10.1111/jvim.15940] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 10/01/2020] [Accepted: 10/07/2020] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND High-mobility group box 1 (HMGB1) is a key mediator of neuroinflammation and there are increased HMGB1 levels in laboratory animal models of epilepsy and human patients with epilepsy. OBJECTIVES To determine serum HMGB1 levels in dogs with epilepsy. ANIMALS Twenty-eight epileptic dogs, 12 dogs with nonepileptic brain diseases, and 26 healthy dogs. METHODS In this case-control study, serum HMGB1 concentrations were estimated using the canine-specific enzyme-linked immunosorbent assay kit. Diagnosis of dogs with epilepsy was based on medical history, physical and neurological examination findings, laboratory test results, magnetic resonance image, and cerebrospinal fluid analysis. RESULTS Serum HMGB1 levels were significantly higher in epileptic dogs (median = 0.41 ng/mL; range, 0.03-5.28) than in healthy dogs (median = 0.12 ng/mL; range, 0.02-1.45; P = .002). In contrast, serum HMGB1 levels of dogs with non-epileptic brain diseases (median = 0.19 ng/mL; range, 0.03-1.04) were not significantly increased compared to those of healthy dogs (P = .12). Regarding idiopathic epilepsy, dogs with an epilepsy course of >3 months showed a higher serum HMGB1 concentration (median = 0.87 ng/mL; range, 0.42-2.88) than those with that of ≤3 months (median = 0.26 ng/mL; range, 0.03-0.88; P = .02). CONCLUSIONS AND CLINICAL IMPORTANCE Serum HMGB1 could be a biomarker of epilepsy.
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Affiliation(s)
- Yoonhoi Koo
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Hakhyun Kim
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Taesik Yun
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Gyeongnam, Republic of Korea
| | - Ji-Houn Kang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Dongwoo Chang
- Veterinary Teaching Hospital, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Ki-Jeong Na
- Veterinary Teaching Hospital, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Mhan-Pyo Yang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
| | - Byeong-Teck Kang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk, Republic of Korea
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Kim J, Lee D, Yoon E, Bae H, Chun D, Kang JG, Jung DI, Yu DH. Clinical Case of a Transfusion-Associated Canine Mycoplasma haemocanis Infection in the Republic of Korea: A Case Report. Korean J Parasitol 2020; 58:565-569. [PMID: 33202509 PMCID: PMC7672241 DOI: 10.3347/kjp.2020.58.5.565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 08/12/2020] [Indexed: 11/23/2022]
Abstract
This report describes the first clinical case of a transfusion-associated Mycoplasma haemocanis infection in a dog in Korea. A 6-year-old male Maltese underwent a red blood cell transfusion for idiopathic immune-mediated hemolytic anemia. Eighteen days after the blood transfusion, the recipient's packed cell volume decreased and basophilic organisms were found on erythrocytes. A polymerase chain reaction and sequential analysis showed that both the donor dog and recipient dog had M. haemocanis. Six weeks after doxycycline administration, no organisms were detected and the recipient's anemia had improved.
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Affiliation(s)
- Jihu Kim
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Donghwan Lee
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Eunchae Yoon
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Hyeona Bae
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Daseul Chun
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Jun-Gu Kang
- Korea Zoonosis Research Institute, Jeonbuk National University, Iksan 54531, Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Do-Hyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
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Song JH, Yu DH, Jung DI. Primary Retrobulbar Leiomyosarcoma in a Dog: A Case Report. Vet Sci 2020; 7:vetsci7040145. [PMID: 32992611 PMCID: PMC7712121 DOI: 10.3390/vetsci7040145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Revised: 09/24/2020] [Accepted: 09/27/2020] [Indexed: 12/03/2022] Open
Abstract
A 2-year-old female Mongrel dog weighing 3.12 kg presented with a 2-month history of progressive exophthalmos of the left eye and periorbital swelling. Fine-needle aspiration cytology of the affected tissue revealed atypical cells of suspected malignant mesenchymal tumor origin. Computed tomography and magnetic resonance imaging revealed an ill-demarcated soft tissue mass in the left retrobulbar space extending into the nasal cavity and into the frontal lobes of the brain with destruction of the adjacent cribriform plate and the basisphenoid bone. Histopathological features of the tumor were consistent with the diagnosis of undifferentiated sarcoma. The tumor cells were immunoreactive for vimentin, smooth muscle actin, and desmin and negative for S100. These findings were mostly consistent with leiomyosarcoma arising from the smooth muscle on the retrobulbar tissues. Primary retrobulbar leiomyosarcoma is an extremely rare tumor in dogs. To expand our knowledge of retrobulbar leiomyosarcoma in dogs, we have described its clinical, diagnostic imaging, histopathological, and immunohistochemical characteristics in a dog.
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Song JH, Jung DI. Thiamine deficiency in a dog associated with exclusive consumption of boiled sweet potato (Ipomoea batatas): Serial changes in clinical findings, magnetic resonance imaging findings and blood lactate and thiamine concentrations. Vet Med Sci 2020; 7:69-76. [PMID: 32966700 PMCID: PMC7840196 DOI: 10.1002/vms3.352] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 07/24/2020] [Accepted: 08/29/2020] [Indexed: 12/30/2022] Open
Abstract
Thiamine (vitamin B1) is an essential nutrient that significantly influences ATP production in the body. It needs to be supplemented consistently through an exogenous source to prevent deficiency; however, it is easily affected by a variety of mitigating factors. Additionally, thiamine requirements can be influenced by an individual's dietary composition. The nervous system is particularly vulnerable to thiamine deficiency due to its high metabolic demand. Thiamine deficiency is typically diagnosed based on clinical signs, dietary history and response to thiamine administration. A 5‐year‐old neutered male Maltese Terrier dog presented with an acute onset of seizures and generalized ataxia. The dog was exclusively fed boiled sweet potato (Ipomoea batatas) as a primary diet source for 4 weeks. MR findings and hyperlactatemic conditions were consistent with thiamine deficiency, and the diagnosis was confirmed by measuring thiamine concentrations in blood using high‐performance liquid chromatography (HPLC). Appropriate thiamine supplementation and diet changes resulted in a rapid improvement in neurological signs. Repeated MR imaging 2 weeks after starting the treatment completely resolved the previously identified abnormalities, and repeated measurements of blood lactate and thiamine levels revealed complete recovery of the thiamine‐deficient status.
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Affiliation(s)
- Joong-Hyun Song
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea.,Department of Research Center, Dongnam Institute of Radiological & Medical Sciences, Busan, Republic of Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
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Song JH, Yu DH, Hwang TS, Seung BJ, Sur JH, Kim YJ, Jung DI. Expression of platelet-derived growth factor receptor-α/ß, vascular endothelial growth factor receptor-2, c-Abl, and c-Kit in canine granulomatous meningoencephalitis and necrotizing encephalitis. Vet Med Sci 2020; 6:965-974. [PMID: 32585777 PMCID: PMC7738704 DOI: 10.1002/vms3.314] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/11/2020] [Accepted: 05/27/2020] [Indexed: 01/21/2023] Open
Abstract
Background Given the active research on targeted therapy using tyrosine kinase (TK) inhibitors (TKIs) in the field of oncology, further studies have recently been conducted to evaluate their use in autoimmune disorders. Based on immunological investigations, previous studies have suggested that granulomatous meningoencephalomyelitis (GME) and necrotizing encephalomyelitis (NE) are similar to multiple sclerosis (MS), which is a human autoimmune demyelinating central nervous system disease. Objectives Considering this perspective, we hypothesized that canine GME and NE have significant expression of one or more TKs, which are associated with human MS pathogenesis. Methods To determine the possible use of conventional multi‐targeted TKIs as a treatment for canine GME and NE, we characterized the immunohistochemical expression of platelet‐derived growth factor receptor (PDGFR)‐α, PDGFR‐ß, vascular endothelial growth factor receptor (VEGFR)‐2, c‐Abl and c‐Kit in GME and NE samples. Results Histological samples from four dogs with GME and three with NE were retrieved. All samples stained positive for PDGFR‐ß (7/7 [100%]). PDGFR‐α and c‐Kit were expressed in 3/7 (42.8%) samples each. c‐Abl was identified in 2/7 (28.5%) samples; no sample showed VEGFR‐2 (0%) expression. Co‐expression of TKs was identified in 6/7 (85.7%) dogs. Conclusions All samples were positive for at least one or more of PDGFR‐α, PDGFR‐ß, c‐Kit and c‐Abl, which are known as the target TKs of conventional multi‐targeted TKIs. Their presence does suggest that these TKs may play a role in the pathogenesis of GME and NE. Therefore, multi‐targeted TKIs may provide benefits in the treatment of canine GME and NE by suppressing the activity of these TKs.
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Affiliation(s)
- Joong-Hyun Song
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Do-Hyeon Yu
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Tae-Sung Hwang
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
| | - Byung-Joon Seung
- Department of Pathobiology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, 05029, Republic of Korea
| | - Jung-Hyang Sur
- Department of Pathobiology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, 05029, Republic of Korea
| | - Young Joo Kim
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, CA, 91766-1854, USA
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, Republic of Korea
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Song JH, Yu DH, Lee HC, Hwang TS, Kim YJ, An SJ, Jung DI. Evaluation of treatment with a combination of mycophenolate mofetil and prednisolone in dogs with meningoencephalomyelitis of unknown etiology: a retrospective study of 86 cases (2009-2017). BMC Vet Res 2020; 16:192. [PMID: 32532259 PMCID: PMC7291637 DOI: 10.1186/s12917-020-02414-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 06/04/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Combination therapy with glucocorticoids and adjunctive immunomodulating drugs has been generally accepted as a standard treatment regimen for meningoencephalomyelitis of unknown etiology (MUE). We hypothesized that treatment with MMF as an adjunctive agent along with glucocorticoids would be effective and well-tolerated protocol in dogs with MUE. Eighty-six dogs with MUE between May 2009 and June 2017 were included (59 females and 27 males; mean age of 5.93 years; mean body weight of 3.83 kg). The medical records of dogs with MUE treated with prednisolone and MMF were retrospectively evaluated to determine the therapeutic response, survival time, and treatment-related adverse effects. RESULTS A partial or complete response (CR) was recorded for 75 dogs. The overall median survival time from the initiation of treatment was 558 days. Dogs that showed CR with no relapse over the treatment period (from diagnosis to death) had significantly longer median survival times. A significantly higher mortality hazard ratio of 4.546 was recorded in dogs that failed to achieve CR. The interval between the onset of clinical signs and the clinical presentation was not significantly associated with CR, relapse rate, and survival time. Adverse effects included gastrointestinal upsets in 26 dogs (30.23%), sporadic infections in 17 dogs (19.77%), and pancreatitis in seven dogs (8.14%). CONCLUSIONS The results suggest that adjunctive MMF treatment for MUE is safe and comparable to other immunosuppressive protocols. The treatment should focus on the achievement of CR and preventing relapse for successful management.
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Affiliation(s)
- Joong-Hyun Song
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, South Korea
| | - Do-Hyeon Yu
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, South Korea
| | - Hee-Chun Lee
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, South Korea
| | - Tae-Sung Hwang
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, South Korea
| | - Young Joo Kim
- College of Veterinary Medicine, Western University of Health Sciences, Pomona, California, 91766-1854, USA
| | - Su-Jin An
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, South Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, 52828, South Korea.
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Bae J, Kim H, Kim W, Kim S, Park J, Jung DI, Yu D. Therapeutic monitoring of rivaroxaban in dogs using thromboelastography and prothrombin time. J Vet Intern Med 2019; 33:1322-1330. [PMID: 30859645 PMCID: PMC6524124 DOI: 10.1111/jvim.15478] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 02/26/2019] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND The chromogenic anti-Xa assay, the gold standard for monitoring the anti-Xa effect of rivaroxaban, is not available as a cage-side diagnostic test for use in a clinical setting. HYPOTHESIS/OBJECTIVES To evaluate clinical modalities for measuring the anticoagulant effects of rivaroxaban using a point-of-care prothrombin time (PT) and thromboelastography (TEG). ANIMALS Six healthy Beagle dogs. METHODS Prospective, experimental study. Four different doses of rivaroxaban (0.5, 1, 2, and 4 mg/kg) were administered PO to dogs. Single PO and 3 consecutive dosing regimens also were assessed. Plasma rivaroxaban concentration was determined using a chromogenic anti-Xa assay, point-of-care PT, and TEG analysis with 4 activators (RapidTEG, 1 : 100 tissue factor [TF100], 1 : 3700 tissue factor [TF3700], and kaolin), and results were compared. Spearman correlation coefficients were calculated between ratios (peak to baseline PT; peak reaction time [R] of TEG to baseline [R] of TEG) and anti-Xa concentration. RESULTS Anti-Xa concentration had a significant correlation with point-of-care PT (R = 0.82, P < .001) and RapidTEG-TEG, TF100-TEG, and TF3700-TEG (R = 0.76, P < .001; R = 0.82, P < .001; and R = 0.83, P < .001, respectively). CONCLUSIONS AND CLINICAL IMPORTANCE Overall, a 1.5-1.9 × delay in PT and R values of TEG 3 hours after rivaroxaban administration is required to achieve therapeutic anti-Xa concentrations of rivaroxaban in canine plasma. The R values of TEG, specifically using tissue factors (RapidTEG, TF100, TF3700) and point-of-care PT for rivaroxaban can be used practically for therapeutic monitoring of rivaroxaban in dogs.
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Affiliation(s)
- Junwoo Bae
- College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Hyunwoo Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Woosun Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju, Republic of Korea
| | - Suhee Kim
- National Institute of Animal Science, Rural Development Administration, Wanju, Republic of Korea
| | - Jinho Park
- College of Veterinary Medicine, Chonbuk National University, Iksan, Republic of Korea
| | - Dong-In Jung
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
| | - Dohyeon Yu
- College of Veterinary Medicine, Gyeongsang National University, Jinju, Republic of Korea
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Yang H, Kim W, Bae J, Kim H, Kim S, Choi J, Park J, Jung DI, Koh H, Yu D. Effects of irradiation and leukoreduction on down-regulation of CXCL-8 and storage lesion in stored canine whole blood. J Vet Sci 2019; 20:72-78. [PMID: 30541183 PMCID: PMC6351766 DOI: 10.4142/jvs.2019.20.1.72] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 11/27/2018] [Accepted: 11/30/2018] [Indexed: 11/20/2022] Open
Abstract
White blood cells (WBCs) and storage period are the main factors of transfusion reactions. In the present study, cytokine/chemokine concentrations after leukoreduction (LR) and irradiation (IR) in stored canine whole blood were measured. Red blood cell storage lesion caused by IR and LR were also compared. Blood samples from 10 healthy Beagles were divided into four groups (no treatment, LR-, IR-, and LR + IR-treated). Leukocytes were removed by filtration in the LR group and gamma radiation (25 Gy) was applied in the IR group. Immunologic factors (WBCs, interleukin-6 [IL-6], C-X-C motif chemokine ligand 8 [CXCL-8], and tumor necrosis factor-alpha) and storage lesion factors (blood pH, potassium, and hemolysis) were evaluated on storage days 0, 7, 14, 21, and 28. Compared to the treated groups, IL-6 and CXCL-8 concentrations during storage were significantly higher in the control (no treatment) group. LR did not show changes in cytokine/chemokine concentrations, and storage lesion presence was relatively mild. IR significantly increased CXCL-8 after 14 days of storage, but IR of leukoreduced blood did not increase CXCL-8 during 28 days of storage. Storage lesions such as hemolysis, increased potassium, and low pH were observed 7 days after IR and storage of blood, regardless of LR. IR of leukoreduced blood is beneficial to avoid immune reactions; however, storage lesions should be considered upon storage.
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Affiliation(s)
- Hayoung Yang
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Woosun Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Junwoo Bae
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Hyunwoo Kim
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Sangki Kim
- College of Industrial Science, Kongju National University, Yesan 32439, Korea
| | - Jihye Choi
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - Jinho Park
- College of Veterinary Medicine, Chonbuk National University, Iksan 54596, Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - HongBum Koh
- College of Veterinary Medicine, Chonnam National University, Gwangju 61186, Korea
| | - DoHyeon Yu
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
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Jee CH, Eom NY, Jang HM, Jung HW, Choi ES, Won JH, Hong IH, Kang BT, Jeong DW, Jung DI. Effect of autologous platelet-rich plasma application on cutaneous wound healing in dogs. J Vet Sci 2016; 17:79-87. [PMID: 27051343 PMCID: PMC4808647 DOI: 10.4142/jvs.2016.17.1.79] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 06/27/2015] [Accepted: 08/22/2015] [Indexed: 11/25/2022] Open
Abstract
This study was conducted to identify the effectiveness of platelet-rich plasma (PRP) and efficacy of intralesional injection as a method of application to acute cutaneous wounds in dogs. Healthy adult beagles (n = 3) were used in this study. Autologous PRP was separated from anticoagulant treated whole blood in three dogs. Cutaneous wounds were created and then treated by intralesional injection of PRP in the experimental group, while they were treated with saline in the control group on days 0, 2 and 4. The healing process was evaluated by gross examination throughout the experimental period and histologic examination on day 7, 14 and 21. In PRP treated wounds, the mean diameter was smaller and the wound closure rate was higher than in the control. Histological study revealed that PRP treated wounds showed more granulation formation and angiogenesis on day 7, and faster epithelialization, more granulation formation and collagen deposition were observed on day 14 than in control wounds. On day 21, collagen deposition and epithelialization were enhanced in PRP treated groups. Overall, PRP application showed beneficial effects in wound healing, and intralesional injection was useful for application of PRP and could be a good therapeutic option for wound management in dogs.
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Affiliation(s)
- Cho-Hee Jee
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Na-Young Eom
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Hyo-Mi Jang
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Hae-Won Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Eul-Soo Choi
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Jin-Hee Won
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Il-Hwa Hong
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
| | - Byeong-Teck Kang
- Laboratory of Veterinary Dermatology and Neurology, College of Veterinary Medicine, Chungbuk National University, Cheongju 28644, Korea
| | - Dong Wook Jeong
- Family Medicine Clinic and Research Institute of Convergence of Biomedical Sciences and Technology, Pusan National University Yangsan Hospital, Pusan National University School of Medicine, Yangsan 50612, Korea
| | - Dong-In Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea
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An D, Park J, Shin JI, Kim HJ, Jung DI, Kang JH, Kim G, Chang DW, Sur JH, Yang MP, Lee C, Kang BT. Temporal Evolution of MRI Characteristics in Dogs with Collagenase-Induced Intracerebral Hemorrhage. Comp Med 2015; 65:517-525. [PMID: 26678369 PMCID: PMC4681246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Revised: 06/16/2015] [Accepted: 06/28/2015] [Indexed: 06/05/2023]
Abstract
Intracerebral hemorrhage (ICH) is one of the most lethal types of stroke. Neuroimaging techniques, particularly MRI, have improved the diagnostic accuracy of ICH. The MRI characteristics of the evolving stages of ICH in humans-but not those in dogs-have been described. In this study, we document the temporal MRI characteristics in a canine model of collagenase-induced ICH. Specifically, ICH was induced in 5 healthy beagles by injecting 500 U of bacterial collagenase from Clostridium histolyticum, which was delivered into the parietal lobe over 5 min by using a microinfusion pump. T1- and T2-weighted, fluid-attenuated inversion recovery, gradient-echo (GRE), and diffusion-weighted (DWI) imaging and measurement of the apparent diffusion coefficient (ADC) were performed serially at 6 different time points (before and 12 h, 3 d, 5 d, 10 d and 24 d after hemorrhage) by using a 3-T MR system. The temporal changes of T1 signal intensity (SI) corresponded well with the reported human data. The temporal changes of T2 and GRE sequences, with the exception of T2 and GRE hyperintensities at the early subacute stage, also matched. ADC measurements were high at the early subacute stage, and DWI-SI positively correlated with T2- and GRE-SI from the early subacute stage onward. In conclusion, MRI is an ideal method for characterizing the temporal evolution of parenchymal alterations after ICH in dogs. These data might be useful for differentiating clinical stages of ICH in dogs.
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Affiliation(s)
- Daegi An
- Laboratory of Molecular Imaging and Translational Research, Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Junyong Park
- Division of Convergence Biotechnology, Korea Basic Science Institute, Ochang, South Korea
| | - Jong-Il Shin
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Hyung-Joong Kim
- Department of Biomedical Engineering, Kyung Hee University, Yongin, South Korea
| | - Dong-In Jung
- Research Institute of Life Sciences, Gyeongsang National University, Jinju, South Korea
| | - Ji-Houn Kang
- Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Gonhyung Kim
- Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Dong-Woo Chang
- Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Jung-Hyang Sur
- Department of Veterinary Pathology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Mhan-Pyo Yang
- Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea
| | - Chulhyun Lee
- Division of Convergence Biotechnology, Korea Basic Science Institute, Ochang, South Korea
| | - Byeong-Teck Kang
- Laboratory of Molecular Imaging and Translational Research, Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, South Korea.
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Son YD, Kim DJ, Kang JH, Chang DW, Jin YB, Jung DI, Lee C, Yang MP, Lee SR, Kang BT. High-resolution fluorodeoxyglucose positron emission tomography and magnetic resonance imaging findings of a pituitary microtumor in a dog. Ir Vet J 2015; 68:22. [PMID: 26405520 PMCID: PMC4581074 DOI: 10.1186/s13620-015-0050-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2014] [Accepted: 09/14/2015] [Indexed: 11/10/2022] Open
Abstract
A 16-year-old, castrated, male English cocker spaniel dog was presented due to generalized alopecia. Routine clinical pathology, endocrine and abdominal ultrasonography results were consistent with a diagnosis of pituitary-dependent hyperadrenocorticism. The adenohypophyseal lesion was clearly visualized on both 3 T and 7 T magnetic resonance imaging (MRI) of the pituitary gland. Although biochemical and MRI findings were consistent with a functional pituitary microtumor, a pituitary lesion was not detected using (18)F-fluorodeoxyglucose positron emission tomography (FDG-PET). This report firstly describes the application of high-resolution FDG-PET to a spontaneous pituitary microtumor in a dog.
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Affiliation(s)
- Young-Don Son
- Neuroscience Research Institute, Gachon University, Incheon, South Korea.,Department of Biomedical Engineering, College of Health Science, Gachon University, Incheon, South Korea
| | - Da-Jung Kim
- Laboratory of Veterinary Dermatology and Neurology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk South Korea
| | - Ji-Houn Kang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk South Korea
| | - Dong-Woo Chang
- Laboratory of Veterinary Radiology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk South Korea
| | - Young-Bae Jin
- The National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Ochang, Chungbuk Republic of Korea
| | - Dong-In Jung
- Institute of Animal Medicine, Gyeongsang National University, Jinju, South Korea
| | - Chulhyun Lee
- Center of Magnetic Resonance Research, Korea Basic Science Institute, Ochang, Chungbuk Republic of Korea
| | - Mhan-Pyo Yang
- Laboratory of Veterinary Internal Medicine, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk South Korea
| | - Sang-Rae Lee
- The National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Ochang, Chungbuk Republic of Korea
| | - Byeong-Teck Kang
- Laboratory of Veterinary Dermatology and Neurology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk South Korea
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Lee Y, Kang JH, Jung DI, Jin YB, Lee SR, Yang MP, Kang BT. Comparison of rapid screening immunoassay and intradermal test for canine atopic dermatitis. J Biomed Res 2015. [DOI: 10.12729/jbr.2015.16.3.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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24
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Jang HM, Eom NY, Kang YH, Jung DI. Use of insulin detemir in dogs with diabetes mellitus. J Biomed Res 2015. [DOI: 10.12729/jbr.2015.16.1.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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25
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Jang HM, Yeo GS, Kim JH, Hwang CY, Hyun JE, Kim SS, Kang YH, Jung DI. Prevalence of serum allergen-specific immunoglobulin E for canine atopic dermatitis in Korea. J Biomed Res 2014. [DOI: 10.12729/jbr.2014.15.4.162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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26
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Moon JH, Jung HW, Lee HC, Jeon JH, Kim NH, Sur JH, Ha J, Jung DI. A study of experimental autoimmune encephalomyelitis in dogs as a disease model for canine necrotizing encephalitis. J Vet Sci 2014; 16:203-11. [PMID: 25269720 PMCID: PMC4483504 DOI: 10.4142/jvs.2015.16.2.203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 09/27/2014] [Indexed: 11/29/2022] Open
Abstract
In the present study, the use of dogs with experimental autoimmune encephalomyelitis (EAE) as a disease model for necrotizing encephalitis (NE) was assessed. Twelve healthy dogs were included in this study. Canine forebrain tissues (8 g), including white and grey matter, were homogenized with 4 mL of phosphate-buffered saline for 5 min in an ice bath. The suspension was emulsified with the same volume of Freund's complete adjuvant containing 1 mg/mL of killed Mycobacterium tuberculosis H37Ra. Under sedation, each dog was injected subcutaneously with canine brain homogenate at four sites: two in the inguinal and two in the axillary regions. A second injection (booster) was administered to all the dogs using the same procedure 7 days after the first injection. Clinical assessment, magnetic resonance imaging, cerebrospinal fluid analyses, necropsies, and histopathological and immunohistochemical examinations were performed for the dogs with EAE. Out of the 12 animals, seven (58%) developed clinically manifest EAE at various times after immunization. Characteristics of canine EAE models were very similar to canine NE, suggesting that canine EAE can be a disease model for NE in dogs.
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Affiliation(s)
- Jong-Hyun Moon
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Korea
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Jeon JH, Jung HW, Jang HM, Moon JH, Park KT, Lee HC, Lim HY, Sur JH, Kang BT, Ha J, Jung DI. Canine model of ischemic stroke with permanent middle cerebral artery occlusion: clinical features, magnetic resonance imaging, histopathology, and immunohistochemistry. J Vet Sci 2014; 16:75-85. [PMID: 25269716 PMCID: PMC4367152 DOI: 10.4142/jvs.2015.16.1.75] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 09/26/2014] [Indexed: 01/17/2023] Open
Abstract
The purpose of this study was to identify time-related changes in clinical, MRI, histopathologic, and immunohistochemical findings associated with ischemic stroke in dogs. Additionally, the association of cerebrospinal fluid (CSF) and tissue levels of interleukin (IL)-6 with clinical prognosis was assessed. Ischemic stroke was induced by permanent middle cerebral artery occlusion (MCAO) in nine healthy experimental dogs. The dogs were divided into three groups according to survival time and duration of the experimental period: group A (survived only 1 day), group B (1-week experimental period), and group C (2-week experimental period). Neurologic status was evaluated daily. Magnetic resonance imaging (MRI) was performed according to a predetermined schedule. Concentration of IL-6 in CSF was measured serially after ischemic stroke. Postmortem examination was performed for all experimental dogs. During histopathological examination, variable degrees of cavitation and necrosis due to neuronal cytopathic effects, such as pyknotic nuclei and cytoplasmic shrinkage, were observed on the affected side of the cerebral cortex in all dogs. Immunohistochemistry specific for IL-6 showed increased expression in the ischemic lesions. CSF IL-6 concentrations and ischemic lesion volumes 1 day after ischemic stroke were significantly higher in group A compared to groups B and C.
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Affiliation(s)
- Joon-Hyeok Jeon
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, Korea
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Jeon JH, Jung HW, Lee HC, Kang BT, Sur JH, Jung DI. Canine model of ischemic stroke with autologous thrombus in three dogs; Magnetic resonance imaging features and histopathological findings. J Biomed Res 2014. [DOI: 10.12729/jbr.2014.15.3.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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29
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Jung HW, Lee HC, Kim JH, Jang HM, Moon JH, Sur JH, Ha J, Jung DI. Imatinib mesylate plus hydroxyurea chemotherapy for cerebellar meningioma in a Belgian Malinois dog. J Vet Med Sci 2014; 76:1545-8. [PMID: 25131949 PMCID: PMC4272992 DOI: 10.1292/jvms.14-0001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
An 8-year-old intact male Belgian Malinois, weighing 37.2 kg, was referred for evaluation due to right side facial paresis, ataxia and a 2-month history of decreased cognitive ability. Physical and neurological examinations revealed mild depression, left-sided head tilt, right-sided facial paresis and ataxia. A well-demarcated, broad-based cerebellar mass and hyperostosis were found on CT imaging of the brain. Based on these CT findings, a cerebellar meningioma was strongly suspected. Hydroxyurea and prednisolone were administered; after 4 weeks, there was reduction in mass size as compared to initial CT results. However, the mass size was found to have grown 6 weeks after hydroxyurea treatment. We then prescribed a combination of imatinib mesylate and hydroxyurea. Two weeks following combination treatment, the mass size had reduced significantly. The mass continuously decreased in size until the patient died during anesthesia. Cerebellar transitional meningioma was confirmed by histopathologic examination. To the author's knowledge, this is the first reported case of imatinib mesylate plus hydroxyurea therapy for the treatment of meningioma in veterinary medicine.
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Affiliation(s)
- Hae-Won Jung
- Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, South Korea
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Ji CM, Jung HW, Jang HM, Moon JH, Jung DI. Hematologic and hemodynamic findings during hemodialysis in 13 beagle dogs. J Biomed Res 2014. [DOI: 10.12729/jbr.2014.15.2.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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31
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Lee HC, Kim JH, Jee CH, Lee JH, Moon JH, Kim NH, Sur JH, Cho KW, Kang BT, Ha J, Jung DI. A case of gastric adenocarcinoma in a Shih Tzu dog: successful treatment of early gastric cancer. J Vet Med Sci 2014; 76:1033-8. [PMID: 24646602 PMCID: PMC4143645 DOI: 10.1292/jvms.13-0315] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
A 9-year-old castrated male Shih Tzu dog was referred to us, because of chronic
vomiting. The patient’s hematological, radiographic, ultrasonographic, endoscopic and
histological examinations were evaluated for diagnosis. Hematologic analysis indicated
moderate anemia and azotemia. Based on the imaging studies, an oval-shaped mass was
identified in the gastric pylorus area. A proliferative mass was found on endoscopic
examination, and we performed biopsy using grasping forceps. The histopathological
findings of the biopsy specimens indicated hypertrophic gastritis, and Y-U pyloroplasty
was performed. However, histopathological examination of the surgically resected mass
revealed tubular adenocarcinoma of the stomach. Then, carboplatin chemotherapy was
performed 4 times for 13 weeks. Clinical signs, such as vomiting, were resolved gradually
after surgery and chemotherapy, and the patient’s condition was managed favorably until
recently (30 months after surgery). This case report describes clinical features, imaging
studies, endoscopic characteristics and histopathological and immunohistochemical features
of gastric tubular adenocarcinoma as early gastric cancer in a dog.
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Affiliation(s)
- Hee-Chun Lee
- Research Institute of Life Sciences, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, South Korea
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Jung HW, Jung DI. Acute lymphoblastic leukemia and chronic lymphocytic leukemia in dogs. J Biomed Res 2014. [DOI: 10.12729/jbr.2014.15.1.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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33
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Jang HM, Kang BT, Jung DI. A retrospective study for allergic dermatitis in 35 dogs. J Biomed Res 2013. [DOI: 10.12729/jbr.2013.14.4.201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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34
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Kang BT, Yi JH, Sur JH, Jung DI, Kang JH, Chang DW, Yang MP. Juvenile cellulitis in a 7-month-old Shih-Tzu dog. J Biomed Res 2013. [DOI: 10.12729/jbr.2013.14.3.180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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35
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Jung DI, Lee HC, Ha J, Jung HW, Jeon JH, Moon JH, Lee JH, Kim NH, Sur JH, Kang BT, Cho KW. Unsuccessful cyclosporine plus prednisolone therapy for autoimmune meningoencephalitis in three dogs. J Vet Med Sci 2013; 75:1661-5. [PMID: 23955394 PMCID: PMC3942949 DOI: 10.1292/jvms.12-0503] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 4-year-old female Maltese (case 1), a 9-year-old castrated male shih tzu (case 2) and
2-year-old female Pomeranian (case 3) presented with neurological signs, such as head
tilt, ataxia, circling and paresis. The three cases were tentatively diagnosed as having
meningoencephalitis of unknown etiology based on computed tomography scan and
cerebrospinal fluid analysis. All patients were managed with cyclosporine plus
prednisolone therapy. The survival times of the three patients were 170, 70 and 21 days,
respectively. After the cases died, we performed necropsy and histopathological
examination for definitive diagnosis. Based on the necropsy, histopathological and
immunohistochemical examinations, cases 1, 2 and 3 were definitely diagnosed as having
necrotizing meningoencephalitis, necrotizing leukoencephalitis and granulomatous
meningoencephalitis, respectively. This case report demonstrated the clinical findings,
brain CT characteristics and histopathological and immunohistochemical features of NME,
NLE and GME in dogs and discussed the reason for the relatively short survival times under
cyclosporine plus prednisolone therapy.
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Affiliation(s)
- Dong-In Jung
- Research Institute of Life Sciences, College of Veterinary Medicine, Gyeongsang National University, Jinju 660-701, South Korea
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Kim JW, Lee JH, Lyoo YS, Jung DI, Park HM. The effects of topical mesenchymal stem cell transplantation in canine experimental cutaneous wounds. Vet Dermatol 2013; 24:242-e53. [PMID: 23432413 PMCID: PMC3618380 DOI: 10.1111/vde.12011] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/15/2012] [Indexed: 12/26/2022]
Abstract
Background Adult stem cells have been widely investigated in bioengineering approaches for tissue repair therapy. We evaluated the clinical value and safety of the application of cultured bone marrow-derived allogenic mesenchymal stem cells (MSCs) for treating skin wounds in a canine model. Hypothesis Topical allogenic MSC transplantation can accelerate the closure of experimental full-thickness cutaneous wounds and attenuate local inflammation. Animals Adult healthy beagle dogs (n = 10; 3–6 years old; 7.2–13.1 kg) were studied. Methods Full-thickness skin wounds were created on the dorsum of healthy beagles, and allogenic MSCs were injected intradermally. The rate of wound closure and the degree of collagen production were analysed histologically using haematoxylin and eosin staining and trichrome staining. The degree of cellular proliferation and angiogenesis was evaluated by immunocytochemistry using proliferating cell nuclear antigen-, vimentin- and α-smooth muscle actin-specific antibodies. Local mRNA expression levels of interleukin-2, interferon-γ, basic fibroblast growth factor and matrix metalloproteinase-2 were evaluated by RT-PCR. Results Compared with the vehicle-treated wounds, MSC-treated wounds showed more rapid wound closure and increased collagen synthesis, cellular proliferation and angiogenesis. Moreover, MSC-treated wounds showed decreased expression of pro-inflammatory cytokines (interleukin-2 and interferon-γ) and wound healing-related factors (basic fibroblast growth factor and matrix metalloproteinase-2). Conclusion and clinical importance Topical transplantation of MSCs results in paracrine effects on cellular proliferation and angiogenesis, as well as modulation of local mRNA expression of several factors related to cutaneous wound healing. Résumé Resumen Zusammenfassung 摘要 要約
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Affiliation(s)
- Ju-Won Kim
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
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Yu CH, Yhee JY, Kim JH, Im KS, Kim NH, Jung DI, Lee HC, Chon SK, Sur JH. Pro- and anti-inflammatory cytokine expression and histopathological characteristics in canine brain with traumatic brain injury. J Vet Sci 2011; 12:299-301. [PMID: 21897106 PMCID: PMC3165162 DOI: 10.4142/jvs.2011.12.3.299] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
We analyzed the expression level and cellular localization of pro- and anti-inflammatory cytokines and histopathologically characterized canine traumatic brain injury (TBI). Canine TBI brains revealed subarachnoid and cerebral cortical hemorrhage, neutrophilic infiltration, neuronal necrosis, astrocytosis, and vasogenic edema. Immunohistochemical evaluations suggested that both pro-inflammatory cytokines [interleukin (IL)-1β, IL-6, and tumor necrosis factor-α] and anti-inflammatory cytokines [IL-10 and transforming growth factor-beta (TGF-β)] were highly expressed in neurons and neutrophils. In particular, the highest magnitude of expression was identified for IL-1β and TGF-β. This data helps describe the pathologic characteristics of canine TBI, and may help in the design of potential therapeutic approaches to control secondary damage by inflammatory cytokines.
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Affiliation(s)
- Chi-Ho Yu
- Department of Pathobiology, Small Animal Tumor Diagnostic Center, College of Veterinary Medicine, Konkuk University, Seoul 143-701, Korea
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Kim JW, Jung DI, Kang BT, Kang MH, Park HM. Unilateral facial paresis secondary to a suspected brainstem arachnoid cyst in a Maltese dog. J Vet Med Sci 2010; 73:459-62. [PMID: 21068518 DOI: 10.1292/jvms.09-0455] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
An 8-year-old, intact female Maltese dog was presented with decreased tear production and unilateral loss of eye blinking. Neuro-ophthalmic examination and brain magnetic resonance imaging were performed to determine the origin of facial paresis. A cystic lesion in the left pontomedullary region which displayed equal intensity to cerebrospinal fluid was revealed. Hyposignality was noted on fluid attenuated inversion recovery sequences, and the lesion was suggestive of an arachnoid cyst. This report described unilateral facial nerve dysfunction that resulted from a suspected brainstem arachnoid cyst in an unusual anatomic location.
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Affiliation(s)
- Ju-Won Kim
- BK21 Basic & Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Soeul, Korea
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Yoo JH, Park C, Jung DI, Lim CY, Kang BT, Kim JH, Park JW, Kim JH, Park HM. In vivo cell tracking of canine allogenic mesenchymal stem cells administration via renal arterial catheterization and physiopathological effects on the kidney in two healthy dogs. J Vet Med Sci 2010; 73:269-74. [PMID: 20953134 DOI: 10.1292/jvms.10-0044] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Stem cell therapy is being special premise for various renal diseases. However, there is limited literature on localization and pathologic and functional effects of allogenic mesenchymal stem cells (MSCs) in healthy dogs. Two healthy dogs were included in this study. Canine MSCs (cMSCs) were cultured from canine bone marrow and incubated with superparamagnetic iron oxide (SPIO) for in vivo cell tracking via MR imaging. The dogs were given the MSC (3 × 10(6) cells) into a renal artery via femoral artery catheterization. Follow-up serial renal assessments included ultrasonography and MRI, serum chemistry, urine analysis, and renal clearance tests. The dogs were euthanized at days 8 and 35 respectively for histopathologic evaluation of kidney. Strong hypointensity in MRI was detected in the treated renal cortex the day after cMSCs infusion. However they disappeared from MR image by the 8th day. Of the serum chemistry tests, serum hepatic enzymes (ALT, AST) were significantly elevated for one week after cMSCs treatment. Histopathological findings also revealed infiltration of SPIO-containing cells into the parenchyma of kidney. On 35th day, histopathology, glomerular atrophy, tubular necrosis, and mineralization were found in the subcapsular cortex, with fibrosis of the interstitial tissues. In vivo MRI studies of stem cells were useful in determining the sequential location of stem cells in the renal parenchyma of healthy dogs. Allogenic stem cells administered via renal artery caused inflammation, tubular necrosis, mineralization, and fibrosis without functional complications.
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Affiliation(s)
- Jong-Hyun Yoo
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, Korea
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Kang BT, Ko KJ, Jang DP, Han JY, Lim CY, Park C, Yoo JH, Kim JW, Jung DI, Kim YB, Woo EJ, Cho ZH, Park HM. Magnetic resonance imaging of the canine brain at 7 T. Vet Radiol Ultrasound 2010; 50:615-21. [PMID: 19999344 DOI: 10.1111/j.1740-8261.2009.01591.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
The purpose of this study was to describe relevant canine brain structures as seen on T2-weighted images following magnetic resonance (MR) imaging at 7 T and to compare the results with imaging at 1.5 T. Imaging was performed on five healthy laboratory beagle dogs using 1.5 and 7 T clinical scanners. At 1.5 T, spin echo images were acquired, while gradient echo images were acquired at 3 T. Image quality and conspicuity of anatomic structures were evaluated qualitatively by direct comparison of the images obtained from the two different magnetic fields. The signal-to-nose ratio (SNR) and contrast-to-noise ratio (CNR) were calculated and compared between 1.5 and 7 T. The T2-weighted images at 7 T provided good spatial and contrast resolution for the identification of clinically relevant brain anatomy; these images provided better delineation and conspicuity of the brain stem and cerebellar structures, which were difficult to unequivocally identify at 1.5 T. However, frontal and parietal lobe and the trigeminal nerve were difficult to identify at 7 T due to susceptibility artifact. The SNR and CNR of the images at 7 T were significantly increased up to 318% and 715% compared with the 1.5 T images. If some disadvantages of 7 T imaging, such as susceptibility artifacts, technical difficulties, and high cost, can be improved, 7 T clinical MR imaging could provide a good experimental and diagnostic tool for the evaluation of canine brain disorders.
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Affiliation(s)
- Byeong-Teck Kang
- BK21 Program of Basic & Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine, Konkuk University, Seoul, South Korea
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Kang BT, Jang DP, Gu SH, Lee JH, Jung DI, Lim CY, Kim HJ, Kim YB, Kim HJ, Woo EJ, Cho ZH, Park HM. MRI features in a canine model of ischemic stroke: correlation between lesion volume and neurobehavioral status during the subacute stage. Comp Med 2009; 59:459-464. [PMID: 19887030 PMCID: PMC2771604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2009] [Revised: 03/04/2009] [Accepted: 06/07/2009] [Indexed: 05/28/2023]
Abstract
The purpose of this study was to evaluate the diagnostic value of magnetic resonance imaging (MRI) and assess the correlation between the volume of the ischemic lesion and neurobehavioral status during the subacute stage of ischemic stroke. Ischemic stroke was induced in 6 healthy laboratory beagles through permanent occlusion of the middle cerebral artery (MCAO). T2-weighted and fluid-attenuated inversion recovery (FLAIR) imaging, diffusion-weighted imaging (DWI), measurement of the apparent diffusion coefficient (ADC) ratio, and neurobehavioral evaluation were performed 3 times serially by using a 1.5-T MR system: before and 3 and 10 d after MCAO. Ischemic lesions demonstrated T2 hyperintensity, FLAIR hyperintensity, and DWI hyperintensity. The ADC ratio was decreased initially but then was increased at 10 d after MCAO. Ischemic lesion volumes on T2-weighted and FLAIR imaging were not significantly different from those on DWI. The lesion volume and neurobehavioral score showed strong correlation. Our results suggest that conventional MRI may be a reliable diagnostic tool during the subacute stage of canine ischemic stroke.
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Affiliation(s)
- Byeong-Teck Kang
- Department of Neurology, Dongguk University International Hospital, Goyang, South Korea
| | - Dong-Pyo Jang
- Neuroscience Research Institute, Gachon University of Medicine and Science, Incheon, South Korea
| | - Su-Hyun Gu
- BK21 Basic and Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine, Konkuk University, Seoul, South Korea
| | - Jong-Hwan Lee
- Department of Veterinary Anatomy, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Dong-In Jung
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju, South Korea
| | - Chae-Young Lim
- BK21 Basic and Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine, Konkuk University, Seoul, South Korea
| | - Ha-Jung Kim
- BK21 Basic and Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine, Konkuk University, Seoul, South Korea
| | - Young-Bo Kim
- Neuroscience Research Institute, Gachon University of Medicine and Science, Incheon, South Korea
| | - Hyung-Joong Kim
- College of Electronics and Information, Kyunghee University, Gyeonggi-do, South Korea
| | - Eung-Je Woo
- College of Electronics and Information, Kyunghee University, Gyeonggi-do, South Korea
| | - Zang-Hee Cho
- Neuroscience Research Institute, Gachon University of Medicine and Science, Incheon, South Korea
| | - Hee-Myung Park
- BK21 Basic and Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine, Konkuk University, Seoul, South Korea
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Kang BT, Jang DP, Lee JH, Jung DI, Gu SH, Lim CY, Kim YB, Quan FS, Kim HJ, Woo EJ, Cho ZH, Park HM. Detection of cerebral metabolites in a canine model of ischemic stroke using 1H magnetic resonance spectroscopy. Res Vet Sci 2009; 87:300-6. [PMID: 19278700 DOI: 10.1016/j.rvsc.2009.01.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2008] [Revised: 11/26/2008] [Accepted: 01/22/2009] [Indexed: 11/15/2022]
Abstract
Proton magnetic resonance spectroscopy ((1)H MRS) provides in vivo biochemical information on tissue metabolites. The purpose of this study was to investigate the serial metabolic changes of (1)H MRS in the cerebrum of ischemic dogs. An ischemic stroke was induced in five health laboratory beagle dogs by permanent middle cerebral artery occlusion using a silicone plug. (1)H MRS was serially performed three times with a 1.5-T MR system: before, three days after and 10days after the stroke. Immunohistochemical staining was performed to determine the expression of neuronal nuclei (NeuN) and glial fibrillary acidic protein (GFAP) at both the ipsilateral and contralateral cerebral cortex. Reduced levels of N-acetyl-asparate (p<0.05), choline (Cho), creatine (Cr) and myo-inositol (mI), and a marked increase in the lactate (Lac) level (p<0.01) were found at three days after the stroke. At 10days after the stroke, the levels of Lac significantly increased (p<0.01); however, the other metabolites were partially elevated. The changes of Cr, Cho and mI were not statistically significant (p>0.05) when the before and after stroke values were compared. There was a significant loss of NeuN and GFAP immunoreactivity at the ischemic core. (1)H MRS may be to a useful diagnostic tool for the evaluation of ischemic stroke in dogs.
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Affiliation(s)
- Byeong-Teck Kang
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, #1 Hwayang-dong, Gwang-jin-gu, Seoul 143-701, South Korea
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Kang BT, Lee JH, Jung DI, Park C, Gu SH, Jeon HW, Jang DP, Lim CY, Quan FS, Kim YB, Cho ZH, Woo EJ, Park HM. Canine model of ischemic stroke with permanent middle cerebral artery occlusion: clinical and histopathological findings. J Vet Sci 2008; 8:369-76. [PMID: 17993751 PMCID: PMC2868153 DOI: 10.4142/jvs.2007.8.4.369] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The aim of the present study was to assess the clinical and histopathological findings in a canine model of ischemic stroke. Cerebral ischemic stroke was induced by middle cerebral artery occlusion in four healthy beagle dogs using silicone plugs. They showed neurological signs of forebrain dysfunction such as reduced responsiveness, head turning, circling, postural reaction deficits, perceptual deficits, and hemianopsia. These signs gradually regressed within 4 weeks without therapy. On magnetic resonance imaging, T2 hyperintensity and T1 hypointensity were found in the cerebral cortex and basal ganglia. These lesions were well-defined and sharply demarcated from adjacent brain parenchyma with a homogenous appearance. No abnormalities of the cerebrospinal fluid were observed. At necropsy, atrophic and necrotic lesions were observed in the cerebral cortex. The cerebral cortex, basal ganglia, and thalamus were partially unstained with triphenyl- tetrazolium chloride. Histopathologically, typical features of infarction were identified in cortical and thalamic lesions. This study demonstrates that our canine model resembles the conditions of real stroke patients.
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Affiliation(s)
- Byeong-Teck Kang
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul 143-701, Korea
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Kang BT, Jung DI, Yoo JH, Park C, Woo EJ, Park HM. A High Fiber Diet Responsive Case in a Poodle Dog with Long-Term Plant Eating Behavior. J Vet Med Sci 2007; 69:779-82. [PMID: 17675815 DOI: 10.1292/jvms.69.779] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
An 11-year-old, castrated male Miniature Poodle dog was referred due to daily plant eating followed by vomiting for 7 years. Each time the dog went out for a walk, he had been munched grass, and then vomited. There were no abnormal findings on medical examinations. Through behavior examination and consultation, we diagnosed this dog as having a plant eating problem. Because we assumed that the dog had eaten plants to supply of dietary deficiency or relieve digestive problems, advised the owner to discontinue supplying previous diet and to feed high-fiber diet. On the follow up, the owner said that the dog had not eaten plants and vomited from 3 days after initial dietary change. The dog has not shown any clinical signs for 13 months. This clinical finding shows a possibility that deficient diet, especially fiber, relates to the plant eating behavior of a dog.
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Affiliation(s)
- Byeong-Teck Kang
- Department of Veterinary Internal Medicine, Konkuk University, Hwayang-dong, Gwang-jin-gu, Seoul 143-701, South Korea
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Jung DI, Park C, Kang BT, Kim JW, Kim HJ, Lim CY, Jeong SW, Park HM. Acquired cervical syringomyelia secondary to a brainstem meningioma in a maltese dog. J Vet Med Sci 2006; 68:1235-8. [PMID: 17146188 DOI: 10.1292/jvms.68.1235] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 15-year-old female maltese was referred to us because of a 3-month history of ataxia, circling, and acute blindness. A mass was noted in the brainstem on brain magnetic resonance images. A cerebellar herniation was also detected on T1-weighted sagittal images. The lateral, third and fourth ventricles and central canal of the cervical spinal cord were enlarged. Based on diagnostic imaging findings, cervical syringomyelia secondary to a brainstem tumor was suspected. The clinical signs were controlled well by lomustine and the dog survived for 8 months after the initial diagnosis. The mass was diagnosed as a meningioma based on histopathological findings. This report describes the clinical findings and imaging characteristics of an acquired syringomyelia resulting from a brainstem meningioma.
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Affiliation(s)
- Dong-In Jung
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
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Jung DI, Kim HJ, Park C, Kim JW, Kang BT, Lim CY, Park EH, Sur JH, Seo MH, Hahm DH, Park HM. Long-Term Chemotherapy with Lomustine of Intracranial Meningioma Occurring in a Miniature Schnauzer. J Vet Med Sci 2006; 68:383-6. [PMID: 16679732 DOI: 10.1292/jvms.68.383] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
A 14-year-old male miniature schnauzer was referred to us because it was circling to the right. A mass in the diencephalon was noted on brain magnetic resonance images. The dura was thickened with marked linear enhancement after contrast administration. Based on diagnostic image analysis, this lesion strongly suggested meningioma. The patient's symptoms were well controlled by a combination therapy of prednisolone and lomustine (CCNU), and survived for thirteen months after diagnosis. This case was diagnosed as a meningioma based on histopathological findings. This report describes the clinical findings, imaging characteristics, and pathologic features of a diencephalic and mesencephalic meningioma and long-term survival after lomustine and prednisolone therapy.
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Affiliation(s)
- Dong-In Jung
- Department of Veterinary Internal Medicine, College of Veterinary Medicine, Konkuk University, Korea
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Pyun HJ, Wagschal KC, Jung DI, Coates RM, Croteau R. Stereochemistry of the proton elimination in the formation of (+)- and (-)-alpha-pinene by monoterpene cyclases from sage (Salvia officinalis). Arch Biochem Biophys 1994; 308:488-96. [PMID: 8109979 DOI: 10.1006/abbi.1994.1069] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The three pinene synthases (cyclases) from common sage (Salvia officinalis) catalyze the conversion of geranyl pyrophosphate to the bicyclic olefins (+)-alpha-pinene and (+)-camphene (cyclase I), (-)-alpha-pinene, (-)-beta-pinene, and (-)-camphene (cyclase II), and (+)-alpha-pinene and (+)-beta-pinene (cyclase III), in addition to smaller amounts of monocyclic and acyclic monoterpene olefins. (1R)-4-2H1- and (1S)-4-2H1-labeled geranyl pyrophosphates were prepared and used to examine the stereochemistry of the C3-proton elimination from the pinyl cation intermediates in the formation of the alpha-pinene enantiomers. Mass spectrometric analysis of the biosynthetic products derived from the chirally deuterated substrates revealed that cyclase I and cyclase III removed the C4-proR-hydrogen of the substrate (C3 proton trans to the dimethyl bridge of the pinyl nucleus) with a stereoselectivity exceeding 94% in the formation of (+)-alpha-pinene. Similarly, cyclase II removed the C4-proS-hydrogen of the substrate (C3-trans proton of the corresponding pinyl cation) with a stereoselectivity exceeding 78% in the formation of (-)-alpha-pinene. The stereoselectivity of these C3-axial hydrogen eliminations is rationalized on the basis of a stereochemical model for the electrophilic isomerization-cyclization reaction sequence catalyzed by the pinene cyclases. The changes in the overall rates of olefin biosynthesis by these enzymes and in the product ratios resulting from deuterium substitution also permitted confirmation of isotopically sensitive branching in pinene biosynthesis and allowed the observation of primary kinetic isotope effects in isolation.
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Affiliation(s)
- H J Pyun
- Department of Chemistry, University of Illinois, Urbana 61801
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