{"title":"High-fat/high-sucrose diet-induced renal changes in obese diabetic mice: a comparison with db/db and KK-Ay mice.","authors":"Chika Oki, Kinuko Uno, Tomohiko Sasase, Takahiro Tsutsui, Keita Sekiguchi, Ayane Yamaguchi, Kouhei Mandai, Masami Shinohara, Miki Sugimoto, Tatsuya Maekawa, Katsuhiro Miyajima, Takeshi Ohta","doi":"10.1292/jvms.24-0313","DOIUrl":"https://doi.org/10.1292/jvms.24-0313","url":null,"abstract":"<p><p>Many genetic and environmental factors are involved in the development and progression of diabetic kidney disease (DKD), and its pathology shows various characteristics. Animal models of DKD play an important role in elucidating its pathogenesis and developing new therapies. In this study, we investigated the pathophysiological features of two DKD animal models: db/db mice (background of hyperglycemia) and KK-Ay mice (background of hyperinsulinemia). Male and female mice were fed a high-fat/high-sucrose (HFS) diet for eight weeks. Two mouse models fed the HFS diet showed increases in urinary protein, kidney weight, and glomerular size, but these changes were pronounced in KK-Ay mice. Pathological examination revealed tubulointerstitial fibrosis in KK-Ay mice fed the HFS diet, but not in db/db mice. In addition, fat accumulation was observed in the macula densa of db/db mice and in the glomeruli of KK-Ay mice fed with the HFS diet. In conclusion, a HFS diet exacerbates renal lesions with tubulointerstitial fibrosis in KK-Ay mice, and KK-Ay mice fed a HFS diet are expected to be useful as a DKD model.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Honoka Nojo, Nobuo Murayama, Sanae A Ishijima, Rui Kano
{"title":"In vitro susceptibility testing of essential oils and their main components against antifungal-resistant Malassezia pachydermatis.","authors":"Honoka Nojo, Nobuo Murayama, Sanae A Ishijima, Rui Kano","doi":"10.1292/jvms.24-0342","DOIUrl":"https://doi.org/10.1292/jvms.24-0342","url":null,"abstract":"<p><p>Canine Malassezia dermatitis (CMD) and otitis externa are generally treated by antifungal drugs. However, azole-resistant strains have been isolated from canine skin and ear canals worldwide. Phytochemicals isolated from essential oils are effective alternatives for inhibiting Malassezia pachydermatis. To evaluate the usefulness of phytochemicals against azole-resistant isolates, we performed in vitro susceptibility testing using the phytochemicals carvacrol, citral, and thymol. Eight antifungal-resistant isolates were obtained from 7 cases of dermatitis and 1 case of otitis externa during 2022 and 2023 from dogs in Tokyo and Kanagawa, Japan. Fungal susceptibility to carvacrol, citral, and thymol was assessed using the modified broth microdilution method. The minimum inhibitory concentrations (MICs) of the phytochemicals in all isolates were as follows: 0.03 to 0.125% for carvacrol; 0.03 to 0.125% for thymol; and 0.03% to 0.125% for citral. Based on these results, carvacrol, citral, and thymol appear to be effective against azole-resistant strains. The phytochemicals appear to be effective for treating antifungal-resistant cases of CMD and otitis externa.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Disseminated proliferative mesocestoidosis caused by Mesocestoides vogae (Cestoda: Cyclophyllidae) in a French bulldog in Japan.","authors":"Toshihiro Tokiwa, Hisashi Yoshimura, Mami Takase, Eigo Kato, Masateru Morisaki, Tatsushi Morita, Mitsuru Koutaka","doi":"10.1292/jvms.24-0411","DOIUrl":"https://doi.org/10.1292/jvms.24-0411","url":null,"abstract":"<p><p>This report describes a case of disseminated proliferative mesocestoidosis in a French bulldog from Aichi, Japan. In July 2023, the dog presented with chronic enteritis, and histological examination of the endoscopic biopsy specimen revealed parasites with suckers. Three months later, numerous tetrathyridia were detected in the inguinal mass. In April 2024, polymorphic tetrathyridia were detected on the visceral organs. These parasites were identified as Mesocestoides vogae (Cyclophylidea: Mesocestoididae) based on morphological features and sequence analyses. In Japan, M. vogae has only been reported in domestic dogs, with five cases of intestinal infection and one case of abdominal infection. This report is the first case of both intestinal and extraintestinal infections in the westernmost region of Japan.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142795664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shoichi Wakitani, Risako Kawabata, Sora Shirataki, Masahiro Yasuda
{"title":"Distribution of keratin subtypes in the thymus of Japanese black calves during acute thymic involution.","authors":"Shoichi Wakitani, Risako Kawabata, Sora Shirataki, Masahiro Yasuda","doi":"10.1292/jvms.24-0413","DOIUrl":"https://doi.org/10.1292/jvms.24-0413","url":null,"abstract":"<p><p>Immunohistochemistry for keratins 5, 8, 14, and 18 was performed on Japanese Black calf thymuses at various stages of acute thymic involution. Keratins 5 and 14 were predominantly localized in the thymic medulla, while keratins 8 and 18 were broadly distributed throughout the parenchyma. Despite thymic involution, the distribution patterns of these keratins remained consistent. The cortical area, assessed by keratin 5 staining, progressively decreased with involution but retained approximately 40% of the total parenchyma even at the most severe stage. These results suggest that the thymic cortex shrinks but does not completely disappear during acute thymic involution in calves.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142781713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Administration of 1-kestose to beluga reduces intestinal Turicibacter andcollagenase gene levels, and blood creatinine levels.","authors":"Tadashi Fujii, Takashi Kamio, Yuichiro Akune, Hideaki Takahashi, Nobuhiro Kondo, Kohei Funasaka, Eizaburo Ohno, Yoshiki Hirooka, Takumi Tochio","doi":"10.1292/jvms.24-0131","DOIUrl":"https://doi.org/10.1292/jvms.24-0131","url":null,"abstract":"<p><p>In recent years, an increased emphasis on enhancing the care and health management of captive marine mammals has been observed. Belugas (White Whale, Delphinapterus leucas), belonging to the family Monodontidae, are of considerable importance and often the centerpiece of aquarium collections worldwide. This study aimed to investigate the effects of the administration of prebiotics on the gut microbiota and overall health of the beluga. Prebiotic 1-kestose, a fructooligosaccharide comprising sucrose and fructose, was administered to three belugas, alongside their regular vitamin supplements for a duration of 8 weeks. 16S rRNA gene amplicon sequencing of intestinal DNA revealed that the relative abundance of the genus Turicibacter, a potentially pathogenic bacteria, significantly reduced after 1-kestose administration when compared to that at baseline (P=0.050). In addition, a quantitative PCR analysis revealed that the levels of collagenase gene, a putative virulence factor gene of Turicibacter, significantly reduced after 1-kestose administration (P=0.050). Blood creatinine levels that were initially above the normal value also reduced after 1-kestose administration (P=0.023). Therefore, this study demonstrated the potential of 1-kestose to improve the health and welfare of aquarium belugas.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142781712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A case of anaplastic oligodendroglioma in a rabbit (Oryctolagus cuniculus).","authors":"Hisaki Tokuno, Miyuu Tanaka, Takeshi Izawa, Hiroshi Sasai, Mitsuru Kuwamura","doi":"10.1292/jvms.24-0438","DOIUrl":"https://doi.org/10.1292/jvms.24-0438","url":null,"abstract":"<p><p>A 6-year-old male rabbit (Oryctolagus cuniculus) showed loss of appetite, right side rotating and the left side circling. The symptoms did not improve, and the rabbit died on the 2nd day after presentation. Histological evaluation of the brain revealed a non-demarcated high cellularity area of neoplastic cells in the midbrain. In the lesion, neoplastic proliferation of large pleomorphic cells with irregular nuclei and medium amount of cytoplasm with prominent atypia was observed. Most of the neoplastic cells were immunohistochemically positive for both Olig2 and vimentin, and filamentous structure was seen in the cytoplasm. To our knowledge, this is the first report of anaplastic oligodendroglioma in a pet rabbit.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142781710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kanami Naramoto, Go Kitahara, Sayed Ahmad Nazhat, Masahiro Yasuda, Takeshi Osawa
{"title":"Profile of cytokine gene expression of the endometrium and its relationship to inflammation and fertility in postpartum dairy cows.","authors":"Kanami Naramoto, Go Kitahara, Sayed Ahmad Nazhat, Masahiro Yasuda, Takeshi Osawa","doi":"10.1292/jvms.24-0177","DOIUrl":"https://doi.org/10.1292/jvms.24-0177","url":null,"abstract":"<p><p>To clarify the profile of endometrial cytokines and their relation to inflammation and fertility, mRNA expressions of interleukin (IL)-1α, -1β, -8, -10 and tumor necrosis factor (TNF)-α at weeks (W) 3, 5, and 7 postpartum were compared between Holstein cows without and with cytological endometritis and between early (£90 days) and delayed (>90 days postpartum) conception cows. IL-1α, IL-1β, and IL-8 expressions at W5 and W7 were significantly higher in cows with cytological endometritis than without. While IL-1α, IL-1β, IL-8, and TNF-α expressions decreased from W3 to W5 in all early conception cows, the percentage of cows decreasing these mRNA was significantly lower in delayed conception cows than early conception cows. Evaluating endometrial cytokine expression in dairy cows helps diagnose cytological endometritis and estimate fertility.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142781716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Reduction of urinary felinine in domestic cats with renal diseases leads to decreased catty odor.","authors":"Ayaka Suka, Reiko Uenoyama, Shota Ichizawa, Masaaki Katayama, Masao Miyazaki, Tamako Miyazaki","doi":"10.1292/jvms.24-0370","DOIUrl":"https://doi.org/10.1292/jvms.24-0370","url":null,"abstract":"<p><p>Cats with progressive renal diseases often exhibit a weakened urinary odor, in contrast to normal cat urine which emits odorants with catty odor, such as 3-mercapto-3-methyl-1-butanol, 3-mercapto-3-methylbutyl formate, 3-methyl-3-methylthio-1-butanol, and 3-methyl-3-(2-methyldisulfanyl)-1-butanol. Felinine, an amino acid, is a precursor of these odorants and metabolized from its precursor, 3-methylbutanol glutathione (MBG), via 3-methylbutanol-cysteinylglycine (MBCG). While previous studies have reported felinine excretion in normal cats, its levels in cats with renal diseases remain unclear. This study investigates the urinary excretion of felinine and its precursors in cats with renal diseases and explores whether changes in these metabolites are linked to reduced volatile felinine derivatives with catty odor. Liquid chromatography/mass spectrometry quantified urinary felinine, MBCG, and MBG in 40 normal cats and 66 cats with renal diseases (classified into mild, moderate, and severe renal diseases), revealing a significant decrease in urinary felinine levels in cats with advanced renal disease, while urinary MBG levels increased. The felinine-to-MBG ratio was significantly lower in cats with severe renal disease compared to normal cats and those with mild renal disease. Gas chromatography/mass spectrometry analysis further showed that the emission of felinine derivatives decreased markedly with renal disease progression. A significant correlation was found between urinary felinine excretion and its major derivative, 3-methyl-3-methylthio-1-butanol. These findings suggest that impaired felinine metabolism, likely due to reduced kidney enzyme activity, contributes to both diminished urinary felinine levels and reduced sulfurous odor in cats with renal diseases.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142781717","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"First detection of NADC34-like porcine reproductive and respiratory syndrome virus strains in Japan.","authors":"Yoriko Yonezawa, Osamu Taira, Takashi Omori, Nobuyuki Tsutsumi, Katsuaki Sugiura","doi":"10.1292/jvms.24-0451","DOIUrl":"https://doi.org/10.1292/jvms.24-0451","url":null,"abstract":"<p><p>Porcine reproductive and respiratory syndrome virus (PRRSV) is an important pathogen in the swine industry. We report for the first time the detection of NADC34-like PRRSV strains in Japan. Serum samples from 18 piglets in Okinawa Prefecture were analyzed for the open reading frame 5 (ORF5) gene encoding glycoprotein 5, which revealed that all samples belonged to sublineage 1.5 (L1A) of Lineage 1. Phylogenetic analysis, restriction fragment length polymorphism patterns, and glycosylation site characteristics confirmed the presence of NADC34-like strains that caused severe outbreaks in the U.S. and Asia. Despite its known pathogenicity, the farm showed only a transient increase in mortality. These findings highlight the need for further investigation into the pathogenicity of PRRSV strains and their potential for the emergence of new variants in Japan.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142774111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Prevalence of four infectious diseases (Porcine Circovirus Type 2, Aujeszky's Disease, Porcine Reproductive and Respiratory Syndrome, Mycoplasma hyopneumoniae) in wild boars in South Korea.","authors":"Kidong Son, Rury Lee, Dongbin Lee, Yeonji Kim, Ji-Yun Sung, Hyesung Jeong, Suwoong Lee, Jae-Ku Oem","doi":"10.1292/jvms.24-0205","DOIUrl":"https://doi.org/10.1292/jvms.24-0205","url":null,"abstract":"<p><p>Despite the large wild boar population in South Korea, research on infectious diseases is limited. We investigated the prevalence of infectious diseases caused by Porcine Circovirus Type 2 (PCV2), Aujeszky's Disease Virus (ADV), Porcine Reproductive and Respiratory Syndrome Virus (PRRSV), and Mycoplasma hyopneumoniae in 400 wild boars in South Korea. PCV2 antibodies were detected in 223 samples, antigens in 112, and both in 101. ADV and PRRSV antibodies were detected in one and three samples, respectively. M. hyopneumoniae antibodies were identified in 28 samples. PCV2 was detected in all nine regions, M. hyopneumoniae in five, PRRSV in three, and ADV in one. Infectious-disease monitoring is crucial to safeguard wild boars.</p>","PeriodicalId":49959,"journal":{"name":"Journal of Veterinary Medical Science","volume":" ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142774207","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}