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61.
Said AW Usui T Shinya K Ono E Ito T Hikasa Y Matsuu A Takeuchi T Sugiyama A Nishii N Yamaguchi T 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2011,73(4):541-544
A sero-epidemiological survey of human and equine H3 influenza A virus infections in dogs and cats using the hemagglutination inhibition (HI) and neuraminidase inhibition (NI) tests was conducted. Serum samples were collected from 582 dogs and 237 cats in Japan during the periods 2002-2008 and 1997-2008, respectively. Although no HI antibodies against equine H3 virus were detected, 9 (3.8%) from cats and 12 (2.1%) from dogs were HI-positive against human H3 virus. Only one serum each from dogs and cats was NI-positive against N2 virus. These findings suggest that although equine H3 influenza virus infections have not been prevalent in companion animals, human H3N2 influenza A virus infections have occurred in dogs and cats in recent years in Japan. 相似文献
62.
Ishikawa K Takenaga K Akimoto M Koshikawa N Yamaguchi A Imanishi H Nakada K Honma Y Hayashi J 《Science (New York, N.Y.)》2008,320(5876):661-664
Mutations in mitochondrial DNA (mtDNA) occur at high frequency in human tumors, but whether these mutations alter tumor cell behavior has been unclear. We used cytoplasmic hybrid (cybrid) technology to replace the endogenous mtDNA in a mouse tumor cell line that was poorly metastatic with mtDNA from a cell line that was highly metastatic, and vice versa. Using assays of metastasis in mice, we found that the recipient tumor cells acquired the metastatic potential of the transferred mtDNA. The mtDNA conferring high metastatic potential contained G13997A and 13885insC mutations in the gene encoding NADH (reduced form of nicotinamide adenine dinucleotide) dehydrogenase subunit 6 (ND6). These mutations produced a deficiency in respiratory complex I activity and were associated with overproduction of reactive oxygen species (ROS). Pretreatment of the highly metastatic tumor cells with ROS scavengers suppressed their metastatic potential in mice. These results indicate that mtDNA mutations can contribute to tumor progression by enhancing the metastatic potential of tumor cells. 相似文献
63.
This paper examines the increasingly popular chisan-chisho movement that has promoted the localization of food consumption in Japan since the late-1990s. Chisan-chisho emerged in the
context of a perceived crisis in the Japanese food system, particularly the long-term decline of agriculture and rural community
and more recent episodes of food scandals. Although initially started as a grassroots movement, many chisan-chisho initiatives
are now organized by governments and farmers’ cooperatives. Acknowledging that the chisan-chisho movement has added some important
resources and a conceptual framework, we nonetheless point out that chisan-chisho has been refashioned as a producer movement
by government as well as the Japan Agricultural Cooperative, capitalizing on local food’s marketing appeal. Chisan-chisho
to date has not been able to become a full-fledged citizen-based political mobilization nor address the issue of marginality
in the food system.
相似文献
| Aya Hirata KimuraEmail: |
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Yoshikazu Taketa Akira Inomata Jiro Sonoda Kazuhiro Hayakawa Kyoko Nakano-Ito Etsuko Ohta Yuki Seki Aya Goto Satoru Hosokawa 《Journal of toxicologic pathology》2013,26(4):419-422
Malakoplakia is a rare form of chronic granulomatous inflammation in mammals, and usually affects the urinary tract in humans. In this report, we present a case of granulomatous nephritis consistent with malakoplakia in a 4-year-old male cynomolgus monkey. Gross examination showed that the kidney was markedly enlarged and adhered to the surrounding organs. Histology showed that there was diffuse interstitial infiltration of histiocytes with abundant foamy eosinophilic cytoplasm resembling von Hansemann cells, PAS-positive granular cytoplasm and occasional PAS- and iron-positive intracellular small inclusion bodies. Electron microscopy showed that these histiocytes contained abundant lysosomes and phagolysosomes but no obvious Michaelis-Gutmann bodies. Based on these findings, a diagnosis of granulomatous nephritis consistent with early malakoplakia was made. This is the first report in a monkey of a renal lesion consistent with malakoplakia. 相似文献
66.
Aya Akagi Jürgen Engelberth Henrik U. Stotz 《European journal of plant pathology / European Foundation for Plant Pathology》2010,128(4):423-428
Oligogalacturonic acids (OGAs) generated from in vitro interaction between fungal polygalacturonase (PG) and bean PG-inhibiting protein (PGIP) were shown to activate phytoalexin biosynthesis in soybean. Based on this observation, it was hypothesized that PGIP-dependent generation of OGAs activates plant defence responses in vivo. We tested the hypothesis that PGIP activates jasmonic acid-dependent responses to pathogens. For this purpose, a population of tomato plants segregating for a mutation in the jasmonate receptor CORONATINE INSENSITIVE1 (coi1) and for overexpression of pear PGIP (pPGIP) was challenged with Botrytis cinerea. The coi1 mutant was hypersensitive to B. cinerea, but overexpression of pPGIP in the coi1 mutant background reduced pathogen susceptibility, suggesting that these two genes independently alter defence responses. In addition, pPGIP overexpression suppressed pathogen induction of salicylic acid in the coi1 mutant and activated expression of acidic ß-1,3-glucanase independently of the coi1 mutation. However, expression of proteinase inhibitor II (PIN II) in pPGIP overexpressing tomato plants was dependent on COI1. Effects of pPGIP overexpression on defence are therefore complex and only in the case of PIN II pPGIP acts through COI1. 相似文献
67.
Shinji Kikuchi Miwako Iwasuna Aya Kobori Yasunori Tsutaki Akihiro Yoshida Yuri Murota Eisho Nishino Hidenori Sassa Takato Koba 《Breeding Science》2014,64(2):176-182
As the fruits of loquat (Eriobotrya japonica, 2n = 2x = 34) carry large seeds, the breeding of seedless loquat has long been a goal. The recent creation of triploid cultivars (2n = 3x = 51) and the application of gibberellins allow commercial production of seedless loquat, but the possibility of seed formation in triploid loquats has not been carefully investigated. Through crossing experiments and cytological observations of meiosis and pollen tube growth, we found that the triploid line 3N-N28 was essentially self-sterile, but developed seeds on pollination with pollen from diploid cultivars at rates of up to 5.5%. Almost half of the seedlings survived to 5 months, and carried diploid (2n = 34), tetraploid (2n = 68), or aneuploid chromosome numbers. Our results suggest that triploid loquat cultivars might retain the risk of seed formation. Protection from pollination by diploid cultivars or the development of new triploid cultivars will be necessary to ensure the production of seedless loquat fruits. 相似文献
68.
Yasunaga Y Takeuchi T Shimokawa T Matsuu A Ohta Y 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2012,74(5):617-620
Expression patterns of sugars on the mucosal surface of the uterus in pregnant mice were investigated by using 21 kinds of lectins. In the uterine mucosa, the GlcNAc group tended to express a positive reaction before pregnant day 10, but the glucose/mannose group generally expressed a positive reaction after pregnant day 10. On the other hand, the fucose group expressed a negative reaction during all periods in pregnancy. These findings were almost the same on both the mesometrial side and anti-mesometrial side of the uterus. These differences of sugar expression probably reflect the functional change of the mucosa during pregnancy and the alteration of sugar expression may give a chance for pathogens to infect in the uterus with limited periods. 相似文献
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Kikkawa A Uchida Y Nakade T Taguchi K 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2003,65(6):689-693
The normal concentrations of salivary secretory IgA (sIgA) were examined, and the response of sIgA to acute stress was evaluated in dogs. Ten clinically healthy beagle dogs familiarized with the method of saliva sampling were used. During the non-stress period, saliva samples were collected between 0800 hr and 1700 hr at 1-hr intervals for 7 consecutive days and analyzed for sIgA concentration. After a 1-day control period, a noise stressor was presented for 15 min between 0845 hr and 0900 hr on 2 consecutive days. Saliva was collected at pre-stress, immediately after, 30 min after and 60 min after the stress. The average sIgA concentration over the 2-day period was compared with the control value. Environmental stimuli were restricted. During the non-stress period, significant variations were observed during the diurnal pattern, in which sIgA increased in the morning and then decreased; and the day-to-day variations were significant except at 0800 hr and 0900 hr. During the stress experiments, the sIgA concentration decreased significantly, immediately after and 30 min after the noise stress, and then increased to the same level as the control value by 60 min after the stress. When estimating the effectiveness of salivary sIgA as a marker of stress in dogs, the appropriate time for saliva sampling appears to be in the morning. Salivary sIgA was deemed potentially useful as a marker of stress in dogs. 相似文献