Tenascin-C Expression in Equine Tendon-derived Cells During Proliferation and Migration     

Manabu NEMOTO  Keiichiro KIZAKI  Yoshio YAMAMOTO  Toshina OONUMA  Kazuyoshi HASHIZUME 《Journal of Equine Science》2013,24(2):17-24

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Physicochemical and morphological properties of termite (Macrotermes bellicosus) mounds and surrounding pedons on a toposequence of an inland valley in the southern Guinea savanna zone of Nigeria     

Susumu S. ABE  Sadahiro YAMAMOTO  Toshiyuki WAKATSUKI 《Soil Science and Plant Nutrition》2009,55(4):514-522

Termites play a significant role in soil-forming processes of the tropics. The influence of termites on pedogenesis as affected by the toposequence, however, has rarely been explored. We investigated the soil physicochemical and morphological characteristics of epigeal mounds constructed by Macrotermes bellicosus (Smethman) compared with those of surrounding pedons along a toposequence (bottom, fringe and upland sites) of an inland valley in central Nigeria. The physicochemical and morphological properties of the mound soils varied according to structural units but were generally different from those of the adjacent pedons. The differences included finer texture, higher electrical conductivity, total N, exchangeable bases (Ca, Mg and K) and effective cation exchange capacity and lower C/N ratio and exchange acidity in the mound than the pedon at each toposequence position. This tendency to modify the soil properties was more prominent in the nest body where the termites actually live, that is, in the hives, royal cell and base-plate, than in the soils below the nest and the other mound parts, that is, the external wall, internal wall and pillars. We found this trend to a greater or lesser degree at all toposequence positions. Our findings suggest that: (1) M. bellicosus can manipulate the mound soils according to functional applications of structure units or environmental requirements for its livelihood, regardless of local soils; (2) M. bellicosus makes ecological patches (hot spots) at all toposequence positions in the same measure; (3) the influence of M. bellicosus on the pedogenesis is reduced in the lowlands compared with the uplands because the number and volume of the mounds were substantially lower in the bottom and fringe sites compared with the upland site.  相似文献   

Diversity and distribution of indigenous soybean-nodulating rhizobia in the Okinawa islands, Japan   总被引：1，自引：1，他引：0  

Koutaro SUZUKI  Hiroko OGURO  Takeo YAMAKAWA  Akihiro YAMAMOTO  Shoichiro AKAO  Yuichi SAEKI 《Soil Science and Plant Nutrition》2008,54(2):237-246

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Host range of Frankia strains isolated from actinorhizal plants growing in Japan and their relatedness based on 16S rDNA     

Yuki NAGASHIMA  Chiharu TANI  Mikihiro YAMAMOTO  Hideo SASAKAWA 《Soil Science and Plant Nutrition》2008,54(3):379-386

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Genetic characterization of chicken anemia viruses newly isolated from diseased chicks in Japan in 2020     

Hieu Van DONG  Giang Thi Huong TRAN  Aoi KUROKAWA  Yu YAMAMOTO  Yohei TAKEDA  Haruko OGAWA  Kunitoshi IMAI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(1):166

In this study, a total of nine chicken samples obtained from two broiler flocks in Oita and Tottori prefectures in 2020 were examined for Chicken anemia virus (CAV) infection. The samples were collected from clinically suspected flocks and diseased chickens. The CAV genome was detected in all nine samples tested by real-time PCR. Phylogenetic analyses and sequence comparisons of the full-length VP1 gene sequences indicated that all the Japanese CAV strains obtained in this study formed a similar cluster of genotype III and shared high nucleotide (99.62–100%) identity. The current Japanese CAV strains were closely related to Chinese CAV strains but not related to vaccine strains. One positive selection site of VP1 was detected among the Japanese CAV strains.  相似文献   

Effect of drug-eluting bead transarterial chemoembolization loaded with cisplatin on normal dogs     

Ko NAKASUMI  Naoki YAMAMOTO  Taro TAKAMI  Harumichi ITOH  Kazuhito ITAMOTO  Hiro HORIKIRIZONO  Toshie ISERI  Munekazu NAKAICHI  Yuki NEMOTO  Hiroshi SUNAHARA  Kenji TANI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2022,84(1):114

Transcatheter arterial embolization (TAE) and transcatheter arterial chemoembolization (TACE) are standard treatments for advanced hepatocellular carcinoma (HCC) and particularly for unresectable tumors or liver metastases in humans. However, reports on TACE used in veterinary medicine are few. This study aimed to evaluate the feasibility and safety of drug-eluting bead transarterial chemoembolization (DEB-TACE). We performed DEB-TACE in four clinically normal dogs and pharmacokinetically compared the results against hepatic arterial infusion (HAI) of cisplatin in two dogs. Drug-eluting beads (DEB) loaded with cisplatin were injected through a microcatheter for selective embolization of the left hepatic artery. After embolization, computed tomography (CT) images and histological examination findings were obtained during a 4-week observation period. Serum platinum concentrations were measured to evaluate cisplatin after each procedure. Biochemical analysis was performed during a 12-week observation period. Embolization was successful in all dogs, and there were no clinically apparent abnormalities. Embolization was confirmed up to 4 weeks after DEB-TACE in two of the four dogs and up to 1 week in the other two dogs using postoperative CT images. Cisplatin was not detected in peripheral veins in all dogs after DEB-TACE, but it was detected in trace amounts after HAI. DEB-TACE using cisplatin was safe and well tolerated by normal dogs. DEB-TACE may be useful in terms of determining systemic toxicity and drug concentration within tumors.  相似文献   

Visual acuity and spectral sensitivity of Jacopever Sebastes schlegeli     

SHINSUKE  TORISAWA  TOMONORI  HIRAISHI  KATSUTARO  YAMAMOTO  KATSUAKI  NASHIMOTO 《Fisheries Science》2002,68(5):984-990

Understanding the behavior of Jacopever Sebastes schlegeli to visual stimulation is important and requires determination of visual sensitivity through the use of effective stimulation. In the present study, we measured the visual acuity, visual accommodation and spectral sensitivity of Jacopever. Visual acuity was calculated from the maximum cone density in the retina. In five specimens, the total length ranged from 17.6 to 24.5 cm and the calculated minimum resolving angles and visual acuities were 9.5–10.7 min and 0.09–0.11, respectively. Measurement of lens movement for visual accommodation indicated a mean distance and direction of movement of 0.31 mm and 16.0° in an upward and forward direction, respectively. The direction of accommodation and visual axis measured from the retinal area of maximum cone density were almost identical. The calculated focal distance was 0.74-fold the total length in the nearest point to infinity. We also determined the spectral sensitivity electrophysiologically by recording S-potentials from 45 specimens of total length of 15.4–47.5 cm. The S-potentials were recorded from 300 horizontal cells in the retina. All responses showed a similar spectral pattern, consisting of hyperpolarization in response to various wavelengths of stimulating light; the maximum amplitude of the response was recorded at 522 nm.  相似文献   

Implantation of Tetrapod-Shaped Granular Artificial Bones or β-Tricalcium Phosphate Granules in a Canine Large Bone-Defect Model     

Sungjin CHOI  I-Li LIU  Kenichi YAMAMOTO  Muneki HONNAMI  Takamasa SAKAI  Shinsuke OHBA  Ryosuke ECHIGO  Shigeki SUZUKI  Ryouhei NISHIMURA  Ung-il CHUNG  Nobuo SASAKI  Manabu MOCHIZUKI 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2014,76(2):229-235

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Dominance and predator avoidance in domesticated and wild masu salmon Oncorhynchus masou     

TOSHIAKI  YAMAMOTO  ULRICH G  REINHARDT 《Fisheries Science》2003,69(1):88-94

ABSTRACT:   Dominance, aggression and predator avoidance were compared among farmed, sea-ranched and wild juvenile masu salmon Oncorhynchus masou in laboratory experiments. Domesticated fish (farmed and sea-ranched), which had been exposed to artificial selection, were not dominant against wild fish in pairwise contests, nor did they show greater aggressiveness. Farmed fish did show greater feeding than wild fish. Under chemically simulated predation risk, farmed fish were more willing to leave cover and feed than wild fish, indicating reduced predator avoidance in the farmed fish. Our results indicate that selection for fast growth (domestication) in masu salmon favors fish that respond to food quickly and ignore predation risk.  相似文献   

Food organisms and feeding habits of larval and juvenile Japanese flounder Paralichthys olivaceus at Ohama Beach in Hiuchi-Nada, the central Seto Inland Sea, Japan     

Masayuki  YAMAMOTO  Hiroyasu  MAKINO  Jun-ichiro  KOBAYASHI  Osamu  TOMINAGA 《Fisheries Science》2004,70(6):1098-1105

ABSTRACT:   The abundance of food organisms and feeding habits of larval and juvenile Japanese flounder were examined during the period from May to August in 1999, 2000 and 2001 at the sandy Ohama beach, the central Seto Inland Sea. The food organisms collected with a sledge net consisted of 40 families from 18 orders, dominated by mysids, crangonids and gammarids. The mean densities of mysids, crangonid shrimp ( Crangon spp.), gammarids and fish were 2.74, 6.74, 2.91 and 0.15 individuals/m², respectively. The main prey of the flounder ( n  = 202; range of total length 9.80–75.95 mm) was mysids and small crangonid shrimp (<14 mm in body length). Prey fish availability was low, as the density of fish was low. The small crangonid shrimp was abundant, and the large crangonid shrimp, which could prey on larval flounder, was not abundant. The crangonid shrimp was important not as a predator for the flounder but as prey. The flounder preferred epifaunal mysids, Nipponomysis ornata and Anisomysis ijimai , to sand-burrowing mysids, Iiella oshimai , and avoided crangonid shrimp.  相似文献