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51.
Katsuaki Sugiura Eisaku Kikuchi Takashi Onodera 《Preventive veterinary medicine》2009,89(3-4):272-276
Following the detection of the first case of Bovine spongiform encephalopathy (BSE) in Japan in September 2001, nine million cattle were tested for BSE up to the end of 2008. As a result, a further 28 cases were detected in dairy cattle. Using the mathematical model previously developed and surveillance data up to the end of 2008, we estimated the prevalence of BSE-infected animals within each birth cohort for the years 1995–2001. We predicted historic and future trends in the number of BSE-infected animals to be culled and anticipated BSE cases from each birth cohort. The results indicate that more infected animals (428 (95% CI: 59–727)) than previously estimated would have been culled from 1995 to 2001, and more cases (53 (95% CI: 25–101)) than previously predicted would have been detected during this period with a higher peak in 2001, if a BSE surveillance program as comprehensive as the present one was applied. In and after 2009, 0–2 cases of BSE would likely to be detected. As previously predicted, the BSE epidemic should be eradicated by 2012. 相似文献
52.
Katsuaki Saitou Ken-ichiro Nagasaki Haruyoshi Yamakawa Hong-Ying Hu Koichi Fujie Arata Katayama 《Soil Science and Plant Nutrition》2013,59(3):775-778
A linear relationship was observed between the amount of total respiratory quinones and the microbial biomass measured by a fumigation-extraction method in 15 soil samples regardless of the significant differences in the composition of the quinone profiles, with one exception in a soil amended with a very high application rate of farmyard manure. It is suggested that the amount of total respiratory quinones can be used as an indicator of the microbial biomass in soil. 相似文献
53.
Katsuaki ISHII 《中国林学(英文版)》2008,10(2):134-136
The possible horizomal transfer of transgenes is of great concern when the transgenic plants are released imo the field. To test the possible transfer of nptII of transgenic trees into soil bacteria, we have used a stool DNA preparation kit to isolate the DNA from the soils in the rhizospheres of two non- and eight transgenic Eucalyptus camaldulensis trees. All the samples have provided the corresponding PCR products in the amplification with bacterial 16S RNA specific sequences, which indicates that the quality of the isolated DNA is adequate for amplification. The nptⅡ specific band has been amplified in three soil samples from the transgenic trees and even treated with filtration before the DNA isolation. This indicates that nptII DNA exists in the soil, although it is still unclear whether the DNA was in the soil particles, in the soil bacteria or in the Agrobacterium comamination which was used for the E. camaldulensis transformation. Two approaches on isolation of bacterial DNA have been suggested for testing the possibility of this event in the future. 相似文献
54.
Nanako YAMASHITA-KAWANISHI Chia Yu CHANG James K CHAMBERS Kazuyuki UCHIDA Katsuaki SUGIURA Iwao KUKIMOTO Hui Wen CHANG Takeshi HAGA 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2021,83(8):1229
Felis catus papillomavirus (FcaPV), especially type 2 (FcaPV2) is considered as one of the causative agents in squamous cell carcinoma (SCC) in cats. However, our previous study detected FcaPV3 and FcaPV4, but not FcaPV2 in feline SCCs collected in Japan, suggesting that the prevalence of FcaPV2 in SCC may vary depending on geographic locations. To evaluate this hypothesis, two conventional PCR reactions targeting E1 and E7 genes were performed to detect FcaPV2 in feline SCC samples collected in Taiwan and Japan. While 46.9% (23/49) of feline SCC cases from Taiwan were PCR positive for FcaPV2, only 8.6% (3/35) cases from Japan were positive. Our result suggests that the prevalence of FcaPV2 in feline SCCs may depend on the region. 相似文献
55.
Ramesh C. Thakur Susumu Goto Katsuaki Ishii S. Mohan Jain 《Journal of Forest Research》1999,4(2):157-160
Genetic stability of propagules regeneratedvia somatic embryogenesis is of paramount importance for its application to clonal forestry. Random amplified polymorphic DNA
(RAPD) markers were used to determine the genetic stability in somatic embryogenesis ofQuercus serrata Thunb. (Japanese white oak). Forty samples from an embryogenic line, consisting of regenerated plantlets, somatic embryos,
and embryogenic calli, were examined using 54 decanucleotide primers. A total of 6520 clear reproducible bands obtained from
these studies exhibited no aberration in RAPD banding pattern among the tested samples. Our results show that somaclonal variation
is absent in our plant propagation system. The genetic stability is discussed in terms of the origin of somatic embryos. 相似文献
56.
Bulk cultures of canine peripheral blood lymphocytes with solid phase anti-CD3 antibody and recombinant interleukin-2 for use in immunotherapy 总被引:1,自引:0,他引:1
Itoh H Kakuta T Kudo T Sakonju I Hohdatsu T Ebina T Takase K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(3):329-333
Interleukin (IL)-2 can induce large numbers of lymphokine-activated killer cells in peripheral blood lymphocytes (PBL), but IL-2 alone cannot induce proliferation of a large number of canine (c) PBL. We used the solid phase anti-CD3 antibody and soluble recombinant (r) IL-2 in order to establish a large scale culture method for cPBL. The number of lymphocytes seeded (3 x 10 (7)) increased to 1 x 10(9) after incubation for 10 days. The phenotype of cultured cPBL cells (after 2 weeks) showed a CD4(+) or CD8(+) predominant cell population. The cultured cell solutions were administered with physiological saline intravenously to each dog. After transfusion of the cultured cells, the cPBL counts, especially the number of CD4(+), CD8(+) and CD4(-)CD8 (-)(DN) cells increased significantly in the recipient dogs. Natural killer (NK) cells, gammadeltaT cells and B cells were considered to be present in the DN cell population. The NK cells and gammadeltaT cells showed no adverse reaction to the transfusion of the activated cPBL. Therefore, it is necessary to recognize the B cells present in the DN cell population by detecting CD21(+) cells. In conclusion, the bulk culture system of cPBL with rIL-2 and solid phase anti-CD3 antibody may be useful for the development of novel immunotherapy in dogs. 相似文献
57.
Ushio Fukushima DVM Shu Sasaki DVM Shozo Okano DVM PhD Toshifumi Oyamada DVM PhD Takashi Yoshikawa DVM PhD Mitsuyoshi Hagio DVM PhD Katsuaki Takase DVM PhD 《Veterinary radiology & ultrasound》2000,41(2):172-177
We have attempted to identify whether it is possible to utilize transcranial Doppler ultrasonography to evaluate the brain damage that occurs after resuscitation from 3 min (control group) and 12 min (damage group) of cardiac arrest in dogs. In this study we used transcranial Doppler ultrasonography to follow the basilar arterial flow and middle cerebral arterial flow for 180 min following the induction of cardiac arrests. Two abnormal waveform patterns (the "to-and-fro" and "diastolic no-flow" patterns) were found in all dogs in the damage group whereas abnormal waveforms were not detected in the control group. Pathological diagnosis revealed that, compared with the control group, the damage group recognized ischemic alteration at the level of the hippocampus and caudate nucleus. In conclusion, this study shows that the basilar arterial flow of observed with transcranial Doppler ultrasonography may be use for the prediction of outcome and the diagnosis of brain damage in the dog. 相似文献
58.
Following the detection of the first case of BSE in Japan in September 2001, four million cattle were subjected to a rapid test for BSE up to the end of 2004. A further 10 cases were detected in the dairy cattle population and two cases in Holstein steers. We focused on the dairy population and estimated the prevalence of BSE infected animals within each birth cohort for the years 1992–2001 using Bayesian inference. From this we were able to predict historic and future trends in the number of infected animals culled from each cohort and whether or not they could be detected using a rapid test. Assuming that BSE infectivity entered Japan in 1995, 225 (95%CI: 111–418) infected animals were predicted to have been culled from 1995 to 2001, of which 116 (56–219) would have been slaughtered for human consumption, and 33 (12–65) cases would have been detected during this period if a BSE surveillance program as comprehensive as the one in place as of April 2004 was applied. Assuming that BSE infectivity entered Japan in 1992, 905 (366–4633) infected animals were predicted to have been culled from 1992 to 2001, of which 694 (190–2473) would have been slaughtered for human consumption, and 201 (53–693) cases would have been detected during this period. Assuming the April 2004 level of surveillance continues and that the feed ban introduced in 2001 is completely effective, 18 (3–111) BSE cases are likely to be detected in the future. The BSE epidemic in Japan most likely reached a peak between 1998 and 2001 and should be eradicated around 2012. 相似文献
59.
Complete mitochondrial DNA sequence of the Japanese flying fish <Emphasis Type="Italic">Cypselurus hiraii</Emphasis> 总被引:2,自引:0,他引:2
Mitsutoshi?NagaseEmail author Tadanori?Aimi Katsuaki?Suginaka Yutaka?Kitamoto Tsutomu?Morinaga 《Fisheries Science》2005,71(4):914-923
ABSTRACT: In this study, to develop a technique that enables authentication of processed seafood, the complete nucleotide sequence of the mitochondrial genome for the Japanese flying fish Cypselurus hiraii was determined. Three segments spanning the entire genome were amplified using polymerase chain reaction, and products were subsequently used as templates for direct sequencing with 60 primers. The genome (16 528 base pairs) was found to contain the same 37 genes (two ribosomal RNA, 22 transfer RNA, and 13 protein-coding genes) as those found in other vertebrate mitochondrial genomes, with the gene order being identical to that typical of vertebrates. A major non-coding region between the tRNAPro and tRNAPhe genes (868 base pairs) appears to be the control (D-loop) region, as it has several conserved blocks characteristic of control regions. 相似文献
60.
Yamamoto M Sato S Hemmi H Hoshino K Kaisho T Sanjo H Takeuchi O Sugiyama M Okabe M Takeda K Akira S 《Science (New York, N.Y.)》2003,301(5633):640-643
Stimulation of Toll-like receptors (TLRs) triggers activation of a common MyD88-dependent signaling pathway as well as a MyD88-independent pathway that is unique to TLR3 and TLR4 signaling pathways leading to interferon (IFN)-beta production. Here we disrupted the gene encoding a Toll/IL-1 receptor (TIR) domain-containing adaptor, TRIF. TRIF-deficient mice were defective in both TLR3- and TLR4-mediated expression of IFN-beta and activation of IRF-3. Furthermore, inflammatory cytokine production in response to the TLR4 ligand, but not to other TLR ligands, was severely impaired in TRIF-deficient macrophages. Mice deficient in both MyD88 and TRIF showed complete loss of nuclear factor kappa B activation in response to TLR4 stimulation. These findings demonstrate that TRIF is essential for TLR3- and TLR4-mediated signaling pathways facilitating mammalian antiviral host defense. 相似文献