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排序方式: 共有61条查询结果,搜索用时 31 毫秒
1.
S Kurashige Y Akuzawa T Yoshida C Teshima S Mitsuhashi 《Microbiology and immunology》1982,26(1):77-85
The distribution of adenosine deaminase (ADA) and purine nucleoside phosphorylase (PNP) activities in lymphoid organs and lymphocyte subpopulations in mice, and the effect of phytohemagglutinin P (PHA-P) and concanavalin A (Con A) on the enzyme activities were studied. ADA activity was distributed equally in cells from all organs used and no mouse strain differences were observed. In contrast, PNP activity varied with the mouse strain, being highest in C57BL/6 mice and lowest in BALB/c mice, and with the organ in ICR mice, being high in peripheral blood lymphocytes and spleen lymphocytes, low in mesenteric lymph node cells and absent or very weak in thymus cells. T and B lymphocytes were prepared from spleen of ICR mice. High ADA activity was found in both T and B lymphocytes, whereas PNP activity in the T lymphocytes was about one-third of that in the B lymphocytes. PNP activity in thymus cells was increased to the normal level of T lymphocytes in the spleens by cultivation without stimulant. The development of PNP activity in thymus cells was partially inhibited by Con A but was not affected by PHA-P. ADA activity in thymus cells was enhanced by in vitro stimulation with PHA-P but not with Con A. In contrast, in spleen lymphocytes the development of ADA activity was enhanced by stimulation with PHA-P and Con A, and that of PNP activity was enhanced by PHA-P but not by Con A. 相似文献
2.
Experimental Salmonellosis VIII. Postinfective Immunity and Its Significance for Conferring Cellular Immunity 下载免费PDF全文
Nobutaka Osawa Masaya Kawakami Satonori Kurashige Susumu Mitsuhashi 《Journal of bacteriology》1967,93(5):1534-1540
In the process of live-vaccine immunization of Salmonella enteritidis infection in mice, the relation between the number of bacteria in the organs of mice and their protecting effect was studied. Treatment with antibiotics was used to control the number of immunizing bacteria in the tissues. Mice, which were infected with 10(-5) mg (1,000 mouse MLD) of virulent S. enteritidis and treated with kanamycin simultaneously, acquired high antilethal resistance against infection with the same organisms. However, the administration of large amounts of kanamycin, which caused a rapid decrease in bacterial numbers in the organs of infected mice, was incapable of conferring immunity. This indicated the necessity of persistence of live bacteria in the host for the production of immunity. A large number of microorganisms were maintained for 53 weeks in a diffusion chamber inserted into the mouse abdominal cavity. The mice implanted with diffusion chambers containing large numbers of virulent S. enteritidis did not acquire antilethal resistance against infection with the same organisms, although agglutinins against S. enteritidis were observed in these mice. Agglutinin was also found in the fluid contained in diffusion chambers inserted into mice immunized with a killed vaccine of S. enteritidis. This indicated that antibody penetrated the membrane filter of diffusion chambers from outside to inside and vice versa. From these results, it is suggested that contact of live microorganisms with the host cell is necessary for conferring postinfective immunity in salmonellosis. 相似文献
3.
Experimental Salmonellosis X. Cellular Immunity and Its Antibody in Mouse Mononuclear Phagocytes 总被引:8,自引:2,他引:6
Satonori Kurashige Nobutaka Osawa Masaya Kawakami Susumu Mitsuhashi 《Journal of bacteriology》1967,94(4):902-906
A cell-associated antibody was detected in the peritoneal mononuclear phagocytes (referred to as monocytes) of mice hyperimmunized with live vaccine of Salmonella enteritidis, by use of immune transfer and immune adherence hemagglutination techniques. The cellular antibody inhibited the growth of a virulent strain of S. enteritidis with the aid of complement and lysozyme on nutrient agar plates. This type of bactericidal antibody could not be detected in the monocytes of mice immunized with killed vaccine of S. enteritidis. The antibody extracted from the peritoneal monocytes of mice hyperimmunized with live vaccine was identified as a macroglobulin by ultracentrifugal analysis. 相似文献
4.
5.
Susumu Mitsuhashi Kazuko Saito Satonori Kurashige Nobuo Yamaguchi 《Molecular and cellular biochemistry》1978,20(3):131-147
Summary In the studies of experimental salmonellosis, immunization of mice with a live vaccine SER of S. enteritidis was found to be effective against further infection with virulent S. enteritidis 116-54. Macrophages obtained from the peritoneal cavity, subcutaneous tissue or liver of immunized mice inhibited intracellular growth of bacteria and resisted cell degeneration caused by engulfment of virulent 116-54 bacteria. This immunity was called cellular immunity.We discovered by chance in 1961 a transfer agent of immunity (TA) from the culture fluid of immunized macrophages. This agent is RNA in nature and can be extracted from the spleen, peritoneal exudate cells or the lymph node of immunized animals and is called immune (i) RNA. We could demonstrate antibody activity in macrophages treated in vitro or in vivo with iRNA by the immune adherence hemagglutination technique.Cellular immunity against tumor cells could be transferred in vitro or in vivo to lymphocytes through iRNA prepared from the spleen cells of syngeneic, allogeneic and xenogeneic animals immunized with the tumor cells.We prepared iRNA against antigens capable of inducing humoral antibody production in animals, i.e., RBCs, bacterial toxin, bacterial flagella and hapten-protein conjugates. Serum antibody was not demonstrated in recipient animals of iRNAs by single or repeated injections of these agents. However, in these animals an increase in the number of specific antibody-carrying cells was found as rosette-formers. It was found further that prior injection of iRNA could induce immunologic memory and produced a high titer of humoral antibody after a boosting stimulation with a small dose of the corresponding antigen. The required interval between the first iRNA and the second antigenic stimulation, and the minimal effective doses of iRNA and antigen are described.We studied the interaction of iRNA with either T- or B-cells and with both cells using adoptive transfer system, athymic nude mice and neonatally thymectomized (NT) mice. Immune RNAs against T-dependent and T-independent antigens could not induce the proliferation of antibody-carrying cells in cyclophosphamide-treated (B-cell depleted) mice. But these agents could induce the proliferation of rosette-formers, implying that iRNAs can replace some role of T-cells even against T-dependent antigens. B-cells can be directly activated by treatment with iRNA against both T-dependent and T-independent antigens, and they differentiated into rosette-formers.Passive transfers of iRNA were successful in establishing immunity against infection with S. enteritidis, or immunity to Salmonella flagella, RBCs and hapten-protein conjugates. The ability of iRNA to confer a secondary response of antibody formation is serially and passively transmissible in recipient animals. These facts suggest the presence of some mechanism that is responsible for the amplification of antigenic stimulation in the immune response. The RNA-dependent RNA polymerase and RNA-dependent DNA polymerase are presented and their role in the immune response is discussed. 相似文献
6.
Masahiro Nakamori Tetsuya Takahashi Tomokazu Nishikawa Yu Yamazaki Takashi Kurashige Hirofumi Maruyama Koji Arihiro Masayasu Matsumoto 《PloS one》2013,8(11)
Background
Rimmed vacuoles (RVs) are round-oval cytoplasmic inclusions, detected in muscle cells of patients with myopathies, such as inclusion body myositis (IBM) and distal myopathy with RVs (DMRV). Granulovacuolar degeneration (GVD) bodies are spherical vacuoles containing argentophilic and hematoxyphilic granules, and are one of the pathological hallmarks commonly found in hippocampal pyramidal neurons of patients with aging-related neurodegenerative diseases, such as Alzheimer''s disease and Parkinson''s disease. These diseases are common in the elderly and share some pathological features. Therefore, we hypothesized that mechanisms of vacuolar formation in RVs and GVD bodies are common despite their role in two differing pathologies. We explored the components of RVs by immunohistochemistry, using antibodies for GVD markers.Methods
Subjects included one AD case, eight cases of sporadic IBM, and three cases of DMRV. We compared immunoreactivity and staining patterns for GVD markers. These markers included: (1) tau-modifying proteins (caspase 3, cyclin-dependent kinase 5 [CDK5], casein kinase 1δ [CK1δ], and c-jun N-terminal kinase [JNK]), (2) lipid raft-associated materials (annexin 2, leucine-rich repeat kinase 2 [LRRK2], and flotillin-1), and (3) other markers (charged multi-vesicular body protein 2B [CHMP2B] and phosphorylated transactive response DNA binding protein-43 [pTDP43]) in both GVD bodies and RVs. Furthermore, we performed double staining of each GVD marker with pTDP43 to verify the co-localization.Results
GVD markers, including lipid raft-associated proteins and tau kinases, were detected in RVs. CHMP2B, pTDP43, caspase 3, LRRK2, annexin 2 and flotillin-1 were detected on the rim and were diffusely distributed in the cytoplasm of RV-positive fibers. CDK5, CK1δ and JNK were detected only on the rim. In double staining experiments, all GVD markers colocalized with pTDP43 in RVs.Conclusions
These results suggest that RVs of muscle cells and GVD bodies of neurons share a number of molecules, such as raft-related proteins and tau-modifying proteins. 相似文献7.
Ehlinger Claire Dartevelle Pauline Zaet Abdurraouf Kurashige Yoshihito Haïkel Youssef Metz-Boutigue Marie-Hélène Marban Céline 《International journal of peptide research and therapeutics》2019,25(4):1679-1687
International Journal of Peptide Research and Therapeutics - The success of endodontic treatments depends on the elimination of intracanal pathogens. Since irrigation and instrumentation can only... 相似文献
8.
Murashima M Watanabe S Zhuo XG Uehara M Kurashige A 《BioFactors (Oxford, England)》2004,22(1-4):271-275
Little is known about the direct effect of broccoli sprouts on human health. So we investigated the effect of broccoli sprouts on the induction of various biochemical oxidative stress markers. Twelve healthy subjects (6 males and 6 females) consumed fresh broccoli sprouts (100 g/day) for 1 week for a phase 1 study. Before and after the treatment, biochemical examination was conducted and natural killer cell activity, plasma amino acids, plasma PCOOH (phosphatidylcholine hydroperoxide), the serum coenzyme Q(10), urinary 8-isoprostane, and urinary 8-OHdG (8-hydroxydeoxyguanosine) were measured. With treatment, total cholesterol and LDL cholesterol decreased, and HDL cholesterol increased significantly. Plasma cystine decreased significantly. All subjects showed reduced PCOOH, 8-isoprostane and 8-OHdG, and increased CoQ(10)H(2)/CoQ(10) ratio. Only one week intake of broccoli sprouts improved cholesterol metabolism and decreased oxidative stress markers. 相似文献
9.
Kobayashi T Zinchuk VS Okada T Wakiguchi H Kurashige T Takatsuji H Seguchi H 《Histochemistry and cell biology》2000,113(4):251-257
In human neutrophils, superoxide is generated primarily within specialized oxidant-producing intracellular compartments. The present study employs a simple methodological approach to evaluate the intracellular movement of these structures in living human neutrophils. Using a CCD camera system, we monitored fluorescence in cells loaded with the succinimidyl ester of dichlorodihydrofluorescein diacetate, which is nonfluorescent until oxidized by reactive oxygen species. Fluorescence-positive intracellular compartments became detectable after neutrophils were stimulated with phorbol myristate acetate for 1 min. Further stimulation increased the intracellular compartments in both number and size in a time-dependent manner. Upon stimulation with phorbol myristate acetate, no fluorescence was seen in intracellular compartments of neutrophils isolated from patients with X-linked chronic granulomatous disease lacking gp91-phox, a membrane component of NADPH oxidase. The method enables tracking of the movement of a single oxidant-producing intracellular compartment following cell stimulation and visualization of the intracellular structures formed by fusion of oxidant-producing intracellular compartments with endocytotic vesicles and phagosomes. Therefore, it is considered to be an informative tool for evaluation of the intracellular dynamics of oxidant-producing intracellular compartments in living human neutrophils and may have a diagnostic value. 相似文献
10.
Naitou H Kawaguchi D Nishimura Y Inayoshi M Kawamori F Masuzawa T Hiroi M Kurashige H Kawabata H Fujita H Ohashi N 《Microbiology and immunology》2006,50(1):45-51
A total of 293 ticks and 111 wild rodents that were collected in Shizuoka and Nagano Prefectures, Japan, were examined for infection of Ehrlichia species and 'Candidatus Neoehrlichia mikurensis.' The 16S rDNA or the omp-1 gene of these bacterial DNAs were detected from the spleens of tick-inoculated mice (5 positive/total 29 mice) or from the spleens of wild rodents (25 positive/total 111 rodents) by PCR amplifi-cation. Sequencing of the 16S rDNA revealed Ehrlichia spp. from the 5 tick-inoculated mice and 8 wild rodents, and 'Candidatus N. mikurensis' from 17 wild rodents. The data suggest the presence of additional genetic variants, and potential vectors and/or reservoirs for these bacteria in central Japan. 相似文献