Effects of neurotoxin 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) treatment on ovarian development of the sapphire devil,Chrysiptera cyanea     

Muhammad Badruzzaman  Satoshi Imamura  Yuki Takeuchi  Taro Ikegami  Akihiro Takemura 《Fish physiology and biochemistry》2015,41(1):61-71

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Decreased Gene Expressions of Insulin Signal Molecules in Canine Hyperadrenocorticism     

Satoshi NOZAWA  Hitomi ODA  Ran AKIYAMA  Kaori UEDA  Kaori SAEKI  Saori SHONO  Natsuki MARUYAMA  Atsuki MURATA  Hiroyuki TAZAKI  Akihiro MORI  Yutaka MOMOTA  Daigo AZAKAMI  Toshinori SAKO  Katsumi ISHIOKA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(8):1177-1182

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Molecular Epidemiology of Paramyxoviruses in Frugivorous Eidolon helvum Bats in Zambia     

Walter MULEYA  Michihito SASAKI  Yasuko ORBA  Akihiro ISHII  Yuka THOMAS  Emiko NAKAGAWA  Hirohito OGAWA  Bernard HANG’OMBE  Boniface NAMANGALA  Aaron MWEENE  Ayato TAKADA  Takashi KIMURA  Hirofumi SAWA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(4):611-614

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Antimicrobial susceptibilities of Mycoplasma isolated from bovine mastitis in Japan     

Kazuhiro Kawai  Hidetoshi Higuchi  Hidetomo Iwano  Akihiro Iwakuma  Ken Onda  Reiichiro Sato  Tomohito Hayashi  Hajime Nagahata  Toshio Oshida 《Animal Science Journal》2014,85(1):96-99

Mycoplasma spp. are highly contagious pathogens and intramammary Mycoplasma infection is a serious issue for the dairy industry. As there is no effective vaccine for Mycoplasma infection, control depends on good husbandry and chemo‐antibiotic therapy. In this study, antimicrobial susceptibility of Mycoplasma strains recently isolated from cases of bovine mastitis in Japan was evaluated by minimum inhibitory concentration (MIC). All Mycoplasma bovis strains were sensitive to pirlimycin, danofloxacin and enrofloxacin, but not kanamycin, oxytetracycline, tilmicosin or tylosin. M. californicum and M. bovigenitalium strains were sensitive to pirlimycin, danofloxacin, enrofloxacin, oxytetracycline, tilmicosin and tylosin, but not to kanamycin. This is the first report to describe the MIC of major antimicrobial agents for Mycoplasma species isolated from bovine mastitis in Japan.  相似文献   

Early Permian bipedal reptile     

Berman DS  Reisz RR  Scott D  Henrici AC  Sumida SS  Martens T 《Science (New York, N.Y.)》2000,290(5493):969-972

A 290-million-year-old reptilian skeleton from the Lower Permian (Asselian) of Germany provides evidence of abilities for cursorial bipedal locomotion, employing a parasagittal digitigrade posture. The skeleton is of a small bolosaurid, Eudibamus cursoris, gen. et sp. nov. and confirms the widespread distribution of Bolosauridae across Laurasia during this early stage of amniote evolution. E. cursoris is the oldest known representative of Parareptilia, a major clade of reptiles.  相似文献   

General Chemical Properties of Brown Forest Soils Developed from Different Parent Materials in the Submontane Zone of the Kanto and Chubu Districts, Japan   总被引：1，自引：0，他引：1  

Akihiro Imaya  Seiichi Ohta  Nagaharu Tanaka  Yoshiyuki Inagaki 《Soil Science and Plant Nutrition》2005,51(6):873-884

It is essential to analyze chemical properties including the amount of various materials and the soil colloid characteristics in forest soils to forecast wood production and the distribution of and variations in the environmental functions of forest soils, such as conservation of stream water and carbon sequestration. Approximately 70% of the forest soils in Japan consists of Brown Forest Soils (BFS), which are considered to be typical zonal soils under the humid-temperate and warm-temperate regime of Japan. BFS were subclassifled into several groups according to the soil moisture environment along the slope and morphological properties. However, even the same type of soil may display different properties depending on the climatic conditions, parent materials and vegetation types. In the present study, the variations in the carbon content, nitrogen content, cation exchange capacity and some properties depending on the parent materials, were clarified by using 34 sola of BFS, and 3 sola of black soils (BLS) for comparison, which were distributed in the submontane zone of the Kanto and Chubu districts in central Japan under the same climatic conditions. We observed differences in the pH, cation exchange capacity, base saturation and clay content among BFS samples derived from various parent materials. The BFS derived from volcanic ash contained obviously larger amounts of carbon and nitrogen than the BFS derived from other parent materials. However, the BFS derived from volcanic ash differed from the BLS derived from volcanic ash in the vertical distribution pattern of carbon and nitrogen. Thus, even in the submontane zone of the Kanto and Chubu districts, the chemical properties of BFS varied considerably with the parent materials. It was concluded that the classification of BFS by the parent materials was useful for evaluating the ability of the BFS, that cover 70% of the forests in Japan, to store various materials.  相似文献   

溶解度作为啤酒大麦品质筛选指标有效性研究   总被引：2，自引：0，他引：2  

杨煜峰  佐佐木昭 《作物学报》1995,21(3):346-350

大麦制麦芽期间，胚乳的溶解是从近胚端向远胚端发展，从亚糊粉层向中心移动，溶解作用主要在发芽的有５天内完成，溶解度大致以每天２０－３０％的速度增加，品种间差异明显，麦芽溶解率的提高与β－葡聚糖含量的下降以及浸出率、糖化力和可溶性氮的增加表现为同步变化，此外，对３６个品种的分析表明，麦芽溶解度与浸出率成极显著正相关，与麦芽硬度和蛋白质含量呈显著负相关，可见，溶解度是反映麦芽品质的一个极好的综合性指标，  相似文献   

Lysozyme in the ovary of tilapia (Oreochromis mossambicus): its purification and some biological properties     

Akihiro Takemura  Kazunori Takano 《Fish physiology and biochemistry》1995,14(5):415-421

Lysozyme was purified from the ovary of tilapia, Oreochromis mossambicus, with two steps, chitin coated-cellulose and Sephadex G-100, and its biological properties were investigated. Purified lysozyme had a molecular mass of 15kDa on SDS-PAGE under reducing condition. Analyses with antibody (a-EL) against the purified lysozyme revealed that serum and egg extract reacted with a-EL and the precipitin lines fused completely. The enzyme activities in serum and egg extract were inhibited by adding serially diluted a-EL. Therefore, egg extract and serum lysozyme was immunologically identical. Immunohistochemically, lysozyme was observed in the ooplasm of the oocytes laden with yolk but not in the follicle layers, egg envelope or immature oocytes (the peri-nucleolus stage). In addition, the enzyme activity in the large oocytes was higher than that in the small ones. These results suggest that lysozyme detected in the oocytes is derived from extra-ovarian tissue and transfers from the maternal circulation. Lysozyme activity in the serum of female tilapia increased with oocyte development, suggesting that the change in the enzyme level may be partially related to the reproductive events (especially vitellogenesis) of the female fish.  相似文献   

Evaluation of serum and urine 1,5-anhydro-D-glucitol and myo-inositol concentrations in healthy dogs     

Miki Y  Mori A  Hayakawa N  Niki T  Oda H  Saeki K  Sato T  Tazaki H  Ishioka K  Arai T  Sako T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(9):1117-1126

1,5-anhydro-D-glucitol (1,5AG) is a pyranoid polyol compound found in human circulating blood. Myo-inositol (MI) is a stereoisomer of inositol and serves as a precursor of inositol phospholipids. 1,5AG and MI are filtered by the glomerulus and almost completely reabsorbed through the renal tubules. However, under hyperglycemic conditions, reabsorption through the renal tubules is competitively inhibited because the structures of 1,5AG and MI resemble that of glucose. In this study, we investigated the kinetics of serum and urine 1,5AG and MI levels in healthy dogs. We demonstrated that 1,5AG and MI exist in canine serum and urine by gas chromatography-mass spectrometry. Under continuous hyperglycemic conditions, the serum 1,5AG concentration in healthy dogs decreased while the serum MI concentration remained unchanged. Urinary excretion of 1,5AG and MI increased significantly after blood glucose concentrations reached 200 to 220 mg/dl. A significant negative correlation was observed between serum 1,5AG and glucose concentrations during hyperglycemia. However, no significant correlation was observed between serum MI and glucose concentrations. In this study, we demonstrated that serum and urine 1,5AG and MI levels were changed by blood glucose concentrations. The serum 1,5AG concentration was decreased by continuous hyperglycemia. However, the serum MI concentration does not reflect hyperglycemia.  相似文献   

Cerebral vascular hamartoma with thrombosis in a dog     

Sakurai M  Morita T  Kondo H  Uemura T  Haruna A  Shimada A 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(10):1367-1369

A cerebral vascular hamartoma was identified in the frontal lobe, striatum and thalamus of the right side of the brain of a male, 7-year-old Shih Tzu. Histologically, the lesion consisted of thin-walled vessels, which showed various sizes and occasionally contained fibrin thrombi. These vascular walls were composed of a single layer of fibromuscular tissue lined by flat endothelium with various amount of collagen, but devoid of large coat of smooth muscles and elastic tissue. Immunohistochemically, the lining endothelial cells were positive for von Willebrand Factor antibody. Neuropil between the vessels was stained with Klüver-Barrera stain, and positive for synaptophysin and GFAP antibodies. Based on these findings, the lesion was diagnosed as vascular hamartoma, which might resemble venous malformation in humans.  相似文献