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排序方式: 共有123条查询结果,搜索用时 31 毫秒
81.
Outbreak of poliomyelitis in Hispaniola associated with circulating type 1 vaccine-derived poliovirus 总被引:1,自引:0,他引:1
Kew O Morris-Glasgow V Landaverde M Burns C Shaw J Garib Z André J Blackman E Freeman CJ Jorba J Sutter R Tambini G Venczel L Pedreira C Laender F Shimizu H Yoneyama T Miyamura T van Der Avoort H Oberste MS Kilpatrick D Cochi S Pallansch M de Quadros C 《Science (New York, N.Y.)》2002,296(5566):356-359
An outbreak of paralytic poliomyelitis occurred in the Dominican Republic (13 confirmed cases) and Haiti (8 confirmed cases, including 2 fatal cases) during 2000-2001. All but one of the patients were either unvaccinated or incompletely vaccinated children, and cases occurred in communities with very low (7 to 40%) rates of coverage with oral poliovirus vaccine (OPV). The outbreak was associated with the circulation of a derivative of the type 1 OPV strain, probably originating from a single OPV dose given in 1998-1999. The vaccine-derived poliovirus associated with the outbreak had biological properties indistinguishable from those of wild poliovirus. 相似文献
82.
Takahisa YAMADA Seiki SASAKI Shin SUKEGAWA Takeshi MIYAKE Tatsuo FUJITA Hiroyuki KOSE Mitsuo MORITA Youichi TAKAHAGI Hiroshi MURAKAMI Fumiki MORIMATSU Yoshiyuki SASAKI 《Animal Science Journal》2009,80(6):631-635
Marbling, defined by the amount and distribution of intramuscular fat, is an economically important trait of beef cattle in Japan. The c2‐11#2 expressed sequence tag (EST) has been previously shown to possess expression difference in musculus longissimus muscle between low‐marbled and high‐marbled steer groups, and to be located within genomic region of a quantitative trait locus for marbling. Thus, the ribosomal protein L27a (RPL27A) gene containing the c2‐11#2 EST sequence was considered as a positional candidate for the gene responsible for marbling. In the present study, a single nucleotide polymorphism (SNP) in the promoter region of the RPL27A, referred to as g.3109537C>T, was detected between the 2 steer groups. The SNP was associated with the predicted breeding value for beef marbling standard number by the analyses using Japanese Black beef cattle population. The effect of genotypes of the SNP on the predicted breeding value for subcutaneous fat thickness was not statistically significant. These findings suggest that the RPL27A SNP may be useful for effective marker‐assisted selection to increase the levels of marbling in Japanese Black beef cattle. 相似文献
83.
Tetsuo Hara Tatsuo Furuta Yoji Sonoda Iwao Iwai 《Soil Science and Plant Nutrition》2013,59(3):373-380
Cabbage plants (B. oleracea L. var. capitata L.) were grown for 37 days in culture solutions containing 4 levels (0, 0.5, 5, 25 ppm) of beryllium or strontium with a low or high supply (20 or 200 ppm) of calcium, and the effects of the cations supplied on the growth of the plants were studied. The total dry weights of the plants decreased successively with increasing levels of Be and Sr in the culture solution, concurrfnt with an increase in the contents of each cation in the plants. The decrease in the yield (dry weight of inner leaves) was most pronounced in the Be treatment with the low Ca supply. The critical contents of Be and Sr which resulted in a 50% decrease in the yield due to the excess injury were estimated to be about 0.0006 and 0.4% on a dry basis in the outer leaves and 0.3 and 0.4% in the roots, respectively, regardless of the Ca supply. 相似文献
84.
Nicotine of tobacco plant is synthesized in the root and accumulated mainly in the leaves. At the repening stage when the nicotine accumalation is predominant, the amount of nitrogen absorbed from root seemed to be little. It is believed, therefore, that the nitrogen used on nicotine synthesis would originate from the nitrogen which has been absorbed already bely fore repening. This has been reported previously by the authors (1). However if nitrogen absorption is increased during the ripening stage, this causes more nicotine synthesis (1,2). 相似文献
85.
Tatsuo Kakie 《Soil Science and Plant Nutrition》2013,59(6):245-251
STEINBERG (1,2) demonstrated from a comparison of numerous data on quantity and relationship of protein to soluble nitrogen that symptom in mineral deficiency was caused by the disturbance of nitrogen or protein metabolism and that marked accumulation of free amino acids in deficient plants might result in the appearance of the deficient symptom. However, it is not known whether or not the disturbance or the accumulation would be affected by direct connection or primary physiological effect of mineral deficiency. 相似文献
86.
Takashi Yokota Hiromichi Mitamura Nobuaki Arai Reiji Masuda Yasushi Mitsunaga Masashi Itani Hiroyuki Takeuchi Tatsuo Tsuzaki 《Fisheries Science》2006,72(3):520-529
ABSTRACT: In order to establish techniques for the stock enhancement of red tilefish Branchiostegus japonicus , it is important to understand the behavioral characteristic of both hatchery-reared and wild fish. Four hatchery-reared and six wild fish were released and tracked using acoustic biotelemetry in Maizuru Bay, Kyoto, Japan, from August 2003 to February 2004. Data for the four wild fish released and tracked from January 2003 to May 2003 were also referred to for analysis. The released fish moved around in relatively large areas within about 10 days after the release, and then three hatchery-reared and two wild fish settled and stayed within limited areas. Fish of both origins showed strong site fidelity and diel activity patterns, i.e. they were detectable in the day but not at night, probably due to hiding behavior in their burrows at night. However, some discrepancies between fish of both origins were detected by comparing their track terms and activity patterns in detail. These discrepancies are probably attributable to the differences in environmental conditions that the fish had experienced before release. 相似文献
87.
Hiromichi?MitamuraEmail author Nobuaki?Arai Yasushi?Mitsunaga Takashi?Yokota Hiroyuki?Takeuchi Tatsuo?Tsuzaki Masashi?Itani 《Fisheries Science》2005,71(3):491-498
ABSTRACT: Wild red tilefish Branchiostegus japonicus were tracked and/or monitored for up to nearly 3 months in Western Wakasa Bay and Maizuru Bay, Japan, using ultrasonic telemetry to examine their movements and burrow fidelity patterns. In Western Wakasa Bay, it is guessed that fish released in relatively shallow waters, about 30 m deep, actively moved into more suitable deeper habitats after their release. In Maizuru Bay, the fish did not undertake large-scale movements and showed burrow fidelity about 1 month after their release. That is, the fish primarily remained in the burrow, which was constructed in the sea-bottom, during the night and moved outside the burrow during the day. The marked circadian rhythm from Fourier analysis indicated a clear diel movement pattern of the red tilefish. 相似文献
88.
Tatsuo NAKAHARA Yoshihisa UENOYAMA Akira IWASE Shinya OISHI Sho NAKAMURA Shiori MINABE Youki WATANABE Chikaya DEURA Taro NOGUCHI Nobutaka FUJII Fumitaka KIKKAWA Kei-ichiro MAEDA Hiroko TSUKAMURA 《The Journal of reproduction and development》2013,59(5):479-484
Puberty in mammals is timed by an increase in gonadotropin-releasing hormone (GnRH)
secretion. Previous studies have shown involvement of the two neuropeptides,
kisspeptin and neurokinin B (NKB), in controlling puberty onset. Little is known
about the role of the other key neuropeptide, dynorphin, in controlling puberty
onset, although these three neuropeptides colocalize in the arcuate kisspeptin
neurons. The arcuate kisspeptin neuron, which is also referred to as the KNDy neuron,
has recently been considered to play a role as an intrinsic source of the GnRH pulse
generator. The present study aimed to determine if attenuation of inhibitory
dynorphin-kappa-opioid receptor (KOR) signaling triggers the initiation of puberty in
normal developing female rats. The present study also determined if stimulatory
NKB-neurokinin 3 receptor (NK3R) signaling advances puberty onset. Female
Wistar-Imamichi rats were weaned and intraperitoneally implanted with osmotic
minipumps filled with nor-binaltorphimine (nor-BNI), a KOR antagonist, or senktide, a
NK3R agonist, at 20 days of age. Fourteen days of intraperitoneal infusion of nor-BNI
or senktide advanced puberty onset, manifested as vaginal opening and the first
vaginal estrus in female rats. Frequent blood sampling showed that nor-BNI
significantly increased luteinizing hormone (LH) pulse frequency at 29 days of age
compared with vehicle-treated controls. Senktide tended to increase this frequency,
but its effect was not statistically significant. The present results suggest that
the inhibitory input of dynorphin-KOR signaling plays a role in the prepubertal
restraint of GnRH/LH secretion in normal developing female rats and that attenuation
of dynorphin-KOR signaling and increase in NKB-NK3R signaling trigger the onset of
puberty in female rats. 相似文献
89.
Yuki Ichinose Fumiko Taguchi Masanobu Yamamoto Mayumi Ohnishi-Kameyama Tatsuo Atsumi Masako Iwaki Hiromi Manabe Mio Kumagai Quan Thanh Nguyen Chi Linh Nguyen Yoshishige Inagaki Hiroshi Ono Kazuhiro Chiku Tadashi Ishii Mitsuru Yoshida 《Journal of General Plant Pathology》2013,79(5):359-365
Glycosylation of flagellin is known to be involved in filament stabilization, motility, and virulence in Pseudomonas syringae. Here we investigated flagellin glycosylation in other phytopathogenic bacteria. Analyses of deduced amino acid sequences, glycostaining, and molecular masses of purified flagellins revealed that flagellins from all phytopathogenic bacteria investigated were glycosylated. Furthermore, the flagellin in a glycosylation-defective mutant of Xanthomonas campestris pv. campestris (Xcc) had a reduced molecular mass, and motility and virulence of the mutant toward host leaves decreased. These results suggest that flagellin glycosylation is ubiquitous in most phytopathogenic bacteria and that flagellin glycosylation is required for virulence in Xcc. 相似文献
90.
Haishima A Kawakami Y Mizuno S Kageyama T Muto M Suzuki T Inoue K Shirota K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2002,64(12):1137-1140
Renal allograft transplantation was performed in four beagles. Immunosuppressive treatment using cyclosporine, mizoribin and prednisolone was continued from Day 5 pre- until Day 20 post-transplantation. Between Days 28 and 32 post-transplantation, an abrupt elevation of the serum creatinine values followed by the development of uremia was seen in all recipients. Histopathology of the allografts examined between Days 28 and 37 revealed edema, necrosis, hemorrhage and severe diffuse interstitial cellular infiltration as well as tubulitis. Glomerular changes notably included swelling of the tufts due to hypercellularity, which was consistent with transplant glomerulitis. The intrarenal arteries exhibited fibrinoid necrosis of the walls and intimal or transmural cellular infiltration. These renal lesions were consistent with those of acute vascular and interstitial rejection in humans. 相似文献