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Journal of Veterinary Medical Science

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https://www.readbyqxmd.com/read/28302942/stress-assessment-using-hair-cortisol-of-kangaroos-affected-by-the-lumpy-jaw-disease
#1
Yukari Sotohira, Kazuyuki Suzuki, Tadashi Sano, Chigusa Arai, Mitsuhiko Asakawa, Hideaki Hayashi
The aim of this study was to objectively assess stress of kangaroos affected by lumpy jaw disease (LJD) using plasma and hair cortisol concentrations. The plasma and hair samples were collected from kangaroos with LJD and healthy controls. Collected hair samples were extracted with methanol after washing with isopropanol, following which they were processed with the cortisol enzyme immunoassay kit. The plasma cortisol concentration of LJD animals tended to be higher than that of the control. Ventral hair cortisol, but not dorsal hair, of LJD animals was significantly higher than that of the control...
March 16, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302941/organochlorine-pesticide-contamination-of-foods-in-africa-incidence-and-public-health-significance
#2
Lesa A Thompson, Wageh Sobhy Darwish, Yoshinori Ikenaka, Shouta M M Nakayama, Hazuki Mizukawa, Mayumi Ishizuka
Organochlorine pesticides (OCPs) have been used worldwide, particularly in Africa for several decades. Although many are banned, several African countries still use OCPs especially for the prevention and control of malaria. OCPs are characterized by their bio-accumulation in the environment, especially in the food chain, where they find their way into the human body. Despite no clear epidemiological studies confirming hazardous effects of these chemicals on human health, many studies have reported positive associations between the use of OCPs and neurological and reproductive disorders, and cancer risk...
March 16, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302955/jejunal-fibroplasia-in-a-rat
#3
Kazufumi Kawasako, Takeshi Kanno, Masao Hamamura
A jejunal nodular mass was identified in an aging rat. Histologically, the boundaries between the lesion and surrounding normal tissue as well as between the inner circular muscle and outer longitudinal muscle were indistinct. The lesion consisted of abundant eosinophilic matrix and cells with a large round to oval nucleus and indistinct cytoplasm. There was no characteristic proliferating pattern, nuclear polymorphism and a low mitotic figure count. Masson's trichrome stain revealed that the intestinal smooth muscles were replaced by the abundant collagen fiber...
March 13, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302954/contamination-status-and-accumulation-characteristics-of-heavy-metals-and-arsenic-in-five-seabird-species-from-the-central-bering-sea
#4
Chihiro Ishii, Yoshinori Ikenaka, Shouta M M Nakayama, Hazuki Mizukawa, Yared Beyene Yohannes, Yutaka Watanuki, Masaaki Fukuwaka, Mayumi Ishizuka
Seabirds are marine top predators and accumulate high levels of metals and metalloids in their tissues. Contamination by metals in the highly productive offshore region has become a matter of public concern. It is home to 80% of the seabird population in the USA, 95% of northern fur seals (Callorhinus ursinus), and major populations of Steller sea lions (Eumetopias jubatus), walruses (Odobenus rosmarus) and whales. Here, the concentrations of eight heavy metals (Hg, Cd, Cr, Co, Ni, Cu, Zn and Pb) and a metalloid (As) in the liver and kidneys of the northern fulmar (Fulmarus glacialis), thick-billed murre (Uria lomvia), short-tailed shearwater (Puffinus tenuirostris), tufted puffin (Fratercula cirrhata) and horned puffin (Fratercula corniculata) collected in the Bering Sea were measured...
March 13, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302940/effects-of-expressing-human-t-cell-leukemia-virus-type-1-htlv-i-oncoprotein-tax-on-dok1-dok2-and-dok3-gene-expression-in-mice
#5
Takeo Ohsugi
Transgenic mice expressing the tax gene from human T-cell leukemia virus type 1 (HTLV-I) genome developed T-cell leukemia or histiocytic sarcoma after at least 12 months. The transgenic mice showed low expression of the downstream of tyrosine kinase (DOK) family members, DOK1, DOK2 and DOK3, which were recently reported to be tumor suppressor genes. Mice showed low DOK2 expression at 5-6 months of age, before disease onset. The expression of DOK1 and DOK3 was not significantly reduced at any age tested. These results suggest that downregulation of DOK2 by the expression of the viral tax gene is the first step in the development of T-cell leukemia or histiocytic sarcoma...
March 12, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302939/concurrent-with-t-zone-lymphoma-and-high-grade-gastrointestinal-cytotoxic-t-cell-lymphoma-in-a-dog
#6
Akihisa Suwa, Tetsuya Shimoda
A 9-year-old, spayed female Golden Retriever dog was referred to us for lymphocytosis and lymphadenopathy, secondary to suspected chronic lymphocytic leukemia (CLL). The dog had a clinical history of anorexia, vomiting and melena lasting two days. The popliteal lymph node contained small-to-intermediate lymphocytes, which led us to suspect low-grade lymphoma. Thickened lesions in the stomach and small intestine were detected by ultrasonography. Histopathology of the popliteal lymph node and small intestine revealed a simultaneous presence of T-zone lymphoma (TZL) and high-grade gastrointestinal (GI) cytotoxic T-cell lymphoma...
March 12, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302938/effect-of-acetate-ringer-ssolution-with-or-without-5-dextrose-administered-intravenously-to-diarrheic-calves
#7
Kenji Tsukano, Satoko Kato, Shinya Sarashina, Izumi Abe, Tadaharu Ajito, Hiromichi Ohtsuka, Kazuyuki Suzuki
The objectives of this study were to evaluate the effects of intravenous acetate Ringer's solution, with or without dextrose, on diarrheic calves with either experimentally induced or spontaneous diarrhea. In the experimental model, diarrhea was induced in nine healthy calves by administering cold milk (below 4°C) twice a day for 2 days. The calves were randomly assigned to the isotonic saline (ISS), acetated Ringer's (AR), or acetated Ringer's with 5% dextrose (ARD) groups, with three calves assigned to each group...
March 12, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302926/long-term-effect-of-sildenafil-on-echocardiographic-parameters-in-dogs-with-asymptomatic-myxomatous-mitral-valve-degeneration
#8
Anusak Kijtawornrat, Siripen Komolvanich, Nakkawee Saengklub, Prapawadee Pirintr, Pakit Boonpala, Chollada Buranakarl
Sildenafil is a selective phosphodiesterase-5 inhibitor that has been demonstrated to delay ventricular remodeling in humans and experimental animals. The aim of this prospective study was to assess the chronic effects of sildenafil administration on echocardiographic indices and N-terminal pro-B-type natriuretic peptide (NT-proBNP) in dogs with naturally occurring, asymptomatic myxomatous mitral valve degeneration. Thirty client-owned dogs with ACVIM class B1 or B2 were enrolled. Dogs were randomly assigned to treatment (sildenafil 1-3 mg/kg, PO, BID for 180 days) or control groups...
March 11, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302930/molecular-characterization-of-an-akabane-virus-isolate-from-west-java-indonesia
#9
Suryo Purnomo Edi, Afif Ibrahim, Rinto Sukoco, Lukman Bunali, Masaji Taguchi, Tomoko Kato, Tohru Yanase, Hiroaki Shirafuji
We isolated an arbovirus from bovine blood in Indonesia. The arbovirus was obtained from the plasma of a cow showing no clinical symptoms in West Java in February 2014, and was identified as Akabane virus (AKAV) by AKAV-specific RT-PCR and subsequent sequence analysis. Phylogenetic analysis based on partial S segment indicated the AKAV isolate, WJ-1SA/P/2014, was most closely related with two isolates from Israel and Turkey reported in 2001 and 2015, respectively, and that WJ-1SA/P/2014 isolate belongs to AKAV genogroup Ib...
March 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302929/heartworm-extract-induces-relaxation-of-isolated-rat-thoracic-aorta
#10
Katsuya Kitoh, Hiroaki Nakamura, Hitoshi Kitagawa, Toshihiro Unno, Seiichi Komori, Shin-Pin Chiou, Yasuhiro Takashima
Isolated rat thoracic aortic strips undergoing noradrenaline-induced contraction were treated with an adult heartworm (HW) crude extract and then examined for isometric changes in tension. HW extract caused relaxation of endothelium-intact strips, but not endothelium-denuded strips. This effect was inhibited by treatment with N(G)-nitro-L-arginine methyl ester hydrochloride (L-NAME) and could be reversed by additional treatment with L-arginine. However, HW extract at a high concentration caused slight relaxation of endothelium-denuded strips, and relaxation persisted after L-NAME treatment in endothelium intact-strips...
March 8, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28302956/validation-of-an-hplc-assay-for-determination-of-telazol-in-pregnant-pigs-application-to-placental-transfer-study
#11
Wei Li, Gangshi Li, Zhijun Zhong, Bingbing Xie, Ziyao Zhou, Wuyang Gu, Xianpeng Shi, Tianliang Tang, Shengquan Ai, Hualin Fu, Mengjiao Liu, Mengxi Liu, De Wu, Yanchun Hu, Guangneng Peng
Anesthetics utilized for the immobilization of pregnant mammals are prone to crossing the placental barrier and cause adverse effects to the fetuses. In this study, we develop a facile method employing high performance liquid chromatography (HPLC) for the study of Telazol crossing the placental barrier of pregnant pigs. The method mainly relies on the efficient extraction strategy that includes the mobile phase composed of 10mM ammonium acetate aqueous solution-acetonitrile (1:4, v/v). When the injected dose of Telazol is 10 mg/kg (5 mg/kg of each constituent drug, zolazepem and tiletamine), zolazepam can cross the placental barrier as it is detected in both uterus and umbilical cord with approximately the same content...
March 7, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28260725/analysis-of-dna-methylation-of-potential-age-related-methylation-sites-in-canine-peripheral-blood-leukocytes
#12
Genta Ito, Kuniko Yoshimura, Yasuyuki Momoi
Reliable methodology for predicting the age of mature dogs is currently unavailable. In this study, amplicon sequencing of 50 blood samples obtained from diseased dogs was used to measure methylation in seven DNA regions. Significant correlations between methylation level and age were identified in four of the seven regions. These four regions were then tested in samples from 31 healthy toy poodles, and correlations were detected in two regions. The age of another 11 dogs was predicted using data from the diseased dogs and the healthy poodles...
March 4, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28260700/proteome-profiling-of-bovine-follicular-fluid-specific-proteins-and-their-effect-on-in-vitro-embryo-development
#13
Saranya Satitmanwiwat, Chinarat Changsangfah, Tassanee Faisaikarm, Kornkanok Promthep, Sujira Thammawung, Kulnasan Saikhun, Kampon Kaeoket
The objective of this study was to determine the effect of bovine follicular fluid proteins (bFF) and their differently charged groups as maturation media supplements for in vitro embryo development. bFF was obtained by aspiration from large healthy follicles (4-10 mm in diameter) and was precipitated by 30-50% (NH4)2SO4. The precipitated protein was fractionated into basic and acidic fractions by ion-exchanger columns. In experiment 1, the oocytes were matured in TCM-199 with 1) FBS+hormones (control) and 2) 10% bFF...
March 3, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28250289/single-nucleotide-polymorphism-genotyping-of-erysipelothrix-rhusiopathiae-isolates-from-pigs-affected-with-chronic-erysipelas-in-japan
#14
Kazumasa Shiraiwa, Yohsuke Ogawa, Sayaka Nishikawa, Masahiro Kusumoto, Masahiro Eguchi, Yoshihiro Shimoji
Over the past decades, Erysipelothrix rhusiopathiae strains displaying similar phenotypic and genetic profiles of the attenuated, acriflavine-resistant E. rhusiopathiae Koganei 65-0.15 strain (serovar 1a) have been frequently isolated from pigs affected with chronic erysipelas in Japan. In this study, using the conventional PCR assay that was designed to detect strain-specific single nucleotide polymorphism (SNP) sites found in the genome of the vaccine strain, we analyzed E. rhusiopathiae isolates from pigs with chronic disease in farms where the Koganei vaccine was used...
March 2, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28250288/prevalence-of-plasmid-mediated-quinolone-resistance-in-escherichia-coli-isolated-from-diseased-animals-in-taiwan
#15
Jih-Ching Yeh, Dan-Yuan Lo, Shao-Kuang Chang, Chi-Chung Chou, Hung-Chih Kuo
Escherichia coli (E. coli) is a zoonotic pathogen that often causes diarrhea, respiratory diseases or septicemia in animals. Fluoroquinolones are antimicrobial agents used to treat pathogenic E. coli infections. In this study, 1,221 E. coli strains were isolated between March, 2011 and February, 2014. The results of the antimicrobial susceptibility testing showed a high prevalence of quinolone resistance. The antimicrobial resistance rates of these E. coli isolates to nalidixic acid (NAL) were 72.0% in swine, 81...
March 2, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28250312/capsular-serotypes-virulence-associated-genes-and-antimicrobial-susceptibility-of-streptococcus-suis-isolates-from-pigs-in-korea
#16
Sang-Ik Oh, Albert Byungyun Jeon, Byeong-Yeal Jung, Jae-Won Byun, Marcelo Gottschalk, Aeran Kim, Jong Wan Kim, Ha-Young Kim
Streptococcus suis is an important pig pathogen with potential for human transmission. The serotype distributions and phenotypic characteristics vary over time and among regions; however, little is known about the characteristics of S. suis isolates in Korea. In this study, 240 S. suis isolates collected from pigs in Korea in 2009-2010 were serotyped by coagglutination tests, subsequently screened for three virulence-associated genes (mrp, epf and sly) and tested for antimicrobial susceptibility. As for 80 isolates, the serotypes of which were relevant to human infections, clonal complexes (CCs) were further identified by PCR...
March 1, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28239052/an-atypical-case-of-recurrent-carotid-body-carcinoma-in-a-young-adult-dog-histopathological-immunohistochemical-and-electron-microscopic-study
#17
Angeline Ping Ping Teh, Watanyoo Pratakpiriya, Yuichi Hidaka, Hiroyuki Sato, Takuya Hirai, Ryoji Yamaguchi
A 3.5-year-old female Chihuahua was presented with complaint of neck pain, intermittent cough and dysphagia. Physical examination and diagnostic imaging of neck region revealed a solid and highly vascularized mass involving the retropharyngeal region. Histologically, the mass showed an atypical zellballen pattern which comprised of high density of type I chief cells with high nuclear cytoplasmic ratio and separated by delicate fibrovascular stroma. Immunoreactivity for neuroendocrine markers was diffusely positive in cytoplasm of tumor cells...
February 27, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28239051/microrna-expression-profiling-in-canine-prostate-cancer
#18
Masanori Kobayashi, Akiko Saito, Yoshikazu Tanaka, Masaki Michishita, Masato Kobayashi, Mami Irimajiri, Takeharu Kaneda, Kazuhiko Ochiai, Makoto Bonkobara, Kimimasa Takahashi, Tatsuya Hori, Eiichi Kawakami
Canine prostate cancer (cPCa) is an untreatable malignant neoplasm resulting in local tissue invasion and distant metastasis. MicroRNAs (miRs) are small non-coding RNAs that function as oncogenes or tumor suppressors. The purpose of this study was to characterize the expression of miRs that are altered in cPCa tissue. The expression levels of 277 mature miRs in prostatic tissue (n=5, respectively) were compared between the non-tumor and tumor groups using real-time PCR. Five miRs (miR-18a, 95, 221, 222 and 330) were up-regulated, but 14 miRs (miR-127, 148a, 205, 299, 329b, 335, 376a, 376c, 379, 380, 381, 411, 487b and 495) were down-regulated specifically in cPCa (P<0...
February 27, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28239040/efficacy-of-type-2-porcine-reproductive-and-respiratory-syndrome-virus-prrsv-vaccine-against-the-2010-isolate-of-vietnamese-highly-pathogenic-prrsv-challenge-in-pigs
#19
Hiroshi Iseki, Kenji Kawashima, Nguyen Tung, Kenjiro Inui, Mitsutaka Ikezawa, Tomoyuki Shibahara, Makoto Yamakawa
The efficacy of a commercial attenuated live type 2 porcine reproductive and respiratory syndrome (PRRS) vaccine was tested under experimental infection with a highly virulent Vietnamese virus isolated from a diseased pig affected with highly pathogenic PRRS (HP-PRRS) using specific pathogen-free (SPF) pigs. Twenty-five 4-week-old SPF pigs were divided into three groups as follows: pigs vaccinated with a single dose of the vaccine (Group 1, n=10), unvaccinated pigs (Group 2, n=10) and unvaccinated and non-infectious control pigs (Group 3, n=5)...
February 25, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28239050/necrotizing-suppurative-nephritis-in-a-japanese-black-feedlot-steer-due-to-proteus-mirabilis-infection
#20
Tadatsugu Abe, Ayako Iizuka, Hirokazu Kojima, Kumiko Kimura, Tomoyuki Shibahara, Makoto Haritani
A Japanese black feedlot steer suddenly died after exhibiting astasia and cramping of the extremities. Necropsy of the animal revealed that the right kidney was enlarged and pale with severe nephrolithiasis. The urinary bladder displayed mucosal hemorrhage. Upon bacteriological investigation, Proteus mirabilis was isolated from the liver, spleen, right kidney, lungs and urine. Histopathological examination revealednecrotizing suppurative nephritis with the presence of numerous gram-negative bacilli and fibrinous suppurative cystitis with no bacilli...
February 24, 2017: Journal of Veterinary Medical Science
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