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Roduner E, Louwrier PWF, Brinkman GA, Garner DM, Reid ID, Arseneau DJ, Senba M, Fleming DG. Quantum Phenomena and Solvent Effects on Addition of Hydrogen Isotopes to Benzene and to Dimethylbutadiene. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.199000008] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Senba M, Buziba N, Mori N, Morimoto K, Nakamura T. Increased prevalence of Kaposi΄s sarcoma-associated herpesvirus in the Kaposi΄s sarcoma-endemic area of western Kenya in 1981-2000. Acta Virol 2011; 55:161-4. [PMID: 21692565 DOI: 10.4149/av_2011_02_161] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Kaposi΄s sarcoma (KS) had been endemic in Africa before the appearance of human immunodeficiency viruses (HIV) in 1985. Incidence of African KS has increased over the time and the risk of contracting KS become greater in HIV-positive as opposed to HIV-negative individuals. KS specimens were collected in 1981-2000 from 228 surgical cases originating from a KS-endemic area of Western Kenya and examined for Kaposi΄s sarcoma-associated herpesvirus (KSHV) by an immunoperoxidase assay. The results showed that the specimens from 1981-1985 (before the HIV epidemic) were KSHV-positive in 10.3% in contrast to the KSHV positivity of 50.1-63.5% in 1986-2000. The linear increase of KSHV positivity in 1981-2000 was statistically significant. The most plausible explanation for the increased prevalence of KSHV in KS cases is that the endemic KS has changed to the epidemic one.
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Affiliation(s)
- M Senba
- Department of Pathology, Institute of Tropical Medicine, Nagasaki University, Japan
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Ono S, Tanaka T, Ishida M, Kinoshita A, Fukuoka J, Takaki M, Sakamoto N, Ishimatsu Y, Kohno S, Hayashi T, Senba M, Yasunami M, Kubo Y, Yoshida LM, Kubo H, Ariyoshi K, Yoshiura K, Morimoto K. Surfactant protein C G100S mutation causes familial pulmonary fibrosis in Japanese kindred. Eur Respir J 2011; 38:861-9. [PMID: 21828032 DOI: 10.1183/09031936.00143610] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Several mutations in the surfactant protein C (SP-C) gene (SFTPC) have been reported as causing familial pulmonary fibrosis (FPF). However, the genetic background and clinical features of FPF are still not fully understood. We identified one Japanese kindred, in which at least six individuals over three generations were diagnosed with pulmonary fibrosis. We examined the patients radiologically and histopathologically and sequenced their SFTPC and ABCA3 genes. We also established a cell line stably expressing the mutant gene. All the patients had similar radiological and histopathological characteristics. Their histopathological pattern was that of usual interstitial pneumonia, showing numerous fibroblastic foci even in areas without abnormal radiological findings on chest high-resolution computed tomography. No child had respiratory symptoms in the kindred. Sequencing of SFTPC showed a novel heterozygous mutation, c.298G>A (G100S), in the BRICHOS domain of proSP-C, which co-segregated with the disease. However, in the ABCA3 gene, no mutation was found. In vitro expression of the mutant gene revealed that several endoplasmic reticulum stress-related proteins were strongly expressed. The mutation increases endoplasmic reticulum stress and induces apoptotic cell death compared with wild-type SP-C in alveolar type II cells, supporting the significance of this mutation in the pathogenesis of pulmonary fibrosis.
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Affiliation(s)
- S Ono
- Department of Human Genetics, Nagasaki University Graduate School of Biomedical Sciences, Japan
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Ishikawa C, Nakachi S, Senba M, Sugai M, Mori N. Activation of AID by human T-cell leukemia virus Tax oncoprotein and the possible role of its constitutive expression in ATL genesis. Carcinogenesis 2011; 32:110-119. [DOI: 10.1093/carcin/bgq222] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
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Senba M, Buziba N, Mori N, Wada A, Irie S, Toriyama K. Detection of Human papillomavirus and cellular regulators p16INK4a, p53, and NF-kappaB in penile cancer cases in Kenya. Acta Virol 2009; 53:43-8. [PMID: 19301950 DOI: 10.4149/av_2009_01_43] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Human papillomavirus (HPV) E6 and E7 gene products play a central role in the induction of benign proliferation and malignant transformation by interacting with several cellular regulatory proteins such as p53, p16(INK4a), and nuclear factor kappaB (NF-kappaB). In this study, HPV DNA was detected by in situ hybridization (ISH) and p53, p16(INK4a), and NF-kappaB by immunochemistry in 22 penile cancer cases in Kenya. HPV DNA was found in 68.2% of the cases. There was no difference in the p53- and p16(INK4a)-positivities in HPV DNA-positive and HPV DNA-negative cases. In HPV DNA-positive cases, the NF-kappaB positivity in the nucleus, cytoplasm, and nucleus and/or cytoplasm amounted to 73.3%, 93.3%, and 100%, respectively, while in HPV DNA-negative cases, a 28.7% NF-kappaB positivity of in the nucleus and/or cytoplasm was observed. It is concluded that NF-kappaB in penile cancer is expressed more frequently in the presence of HPV infection than in its absence.
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Affiliation(s)
- M Senba
- Department of Pathology, Institute of Tropical Medicine, Nagasaki University, Japan.
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Satoh S, Oishi K, Iwagaki A, Senba M, Akaike T, Akiyama M, Mukaida N, Atsushima KM, Nagatake T. Dexamethasone impairs pulmonary defence against Pseudomonas aeruginosa through suppressing iNOS gene expression and peroxynitrite production in mice. Clin Exp Immunol 2001; 126:266-73. [PMID: 11703370 PMCID: PMC1906189 DOI: 10.1046/j.1365-2249.2001.01656.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To elucidate the in vivo mechanisms involved in the impairment in pulmonary defence as the result of treatment with glucocorticoids, we established fatal pneumonia with bacteraemia in dexamethasone (DEX)-treated mice by means of an intratracheal challenge of Pseudomonas aeruginosa. An increased neutrophil influx was observed in bronchoalveolar lavage (BAL) fluids from both untreated and DEX-treated mice. The complete suppression of an inducible isoform of nitric oxide synthase (iNOS) mRNA expression and tumour necrosis factor alpha (TNF-alpha) production during the early phase of pneumonia, but not CXC chemokine production, were found in the case of the DEX-treated mice. An immunohistochemical study with a specific antibody also revealed negative staining for nitrotyrosine in the lung tissue of DEX-treated mice, while the formation of nitrotyrosine, which indirectly indicates the generation of peroxynitrite with a potent bactericidal activity, was detected clearly in the bronchial epithelium as well as alveolar phagocytic cells of lung tissue from untreated mice. Furthermore, an intraperitoneal administration of S-methyl-isothiourea (SMT), a potent inhibitor of NOS, significantly decreased the survival and increased bacterial density in the case of untreated mice. In contrast, no significant effects on the survival and bacterial density in the lung and blood were found as the result of treatment with SMT in DEX-treated mice. Collectively, a complete repression of iNOS gene expression and a lack of the generation of peroxynitrite as well as an inhibition of TNF-alpha production in the lung appeared to be responsible for the progression of the fatal pneumonia due to P. aeruginosa in DEX-treated mice.
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Affiliation(s)
- S Satoh
- Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Japan
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Morimoto K, Amano H, Sonoda F, Baba M, Senba M, Yoshimine H, Yamamoto H, Ii T, Oishi K, Nagatake T. Alveolar Macrophages that Phagocytose Apoptotic Neutrophils Produce Hepatocyte Growth Factor during Bacterial Pneumonia in Mice. Am J Respir Cell Mol Biol 2001; 24:608-15. [PMID: 11350831 DOI: 10.1165/ajrcmb.24.5.4292] [Citation(s) in RCA: 105] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Hepatocyte growth factor (HGF) is postulated to play an important role in the repair of pulmonary epithelium in acute lung injury. To evaluate the role of HGF in bacterial pneumonia, the kinetics of HGF production and the cellular sources of HGF have been examined in the lungs of mice that had been intratracheally challenged with Pseudomonas aeruginosa. Neutrophil accumulation in the airway occurred immediately, reached a peak at 36 h, and then progressively declined by 14 d after infection. We found a biphasic pattern of HGF messenger RNA expression and protein synthesis in the lung after bacterial infection. The first peak for HGF production was found at 6 h after infection, and the primary source of HGF was shown to be bronchial epithelial cells. Interestingly, the second peak for HGF production, which was found around 48 to 72 h after infection, was closely associated with the increase in the percentage of alveolar macrophages (AMs) that became positive for myeloperoxidase, indicating phagocytosis of apoptotic neutrophils. The cellular source of the second peak was found to be AMs. Further, murine AMs which phagocytosed apoptotic neutrophils induced higher levels of HGF production in vitro. These results strongly indicate a novel mechanism of HGF production by AMs, which are phagocytosing apoptotic neutrophils, and the pivotal role of AMs in the healing and repair of damaged pulmonary epithelium through the production of HGF.
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Affiliation(s)
- K Morimoto
- Department of Respiratory Medicine, Nijigaoka Hospital, Nagasaki, Japan.
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Amano H, Oishi K, Sonoda F, Senba M, Wada A, Nakagawa H, Nagatake T. Role of cytokine-induced neutrophil chemoattractant-2 (CINC-2) alpha in a rat model of chronic bronchopulmonary infections with Pseudomonas aeruginosa. Cytokine 2000; 12:1662-8. [PMID: 11052817 DOI: 10.1006/cyto.2000.0771] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In order to investigate the role of the cytokine-induced neutrophil chemoattractant (CINC) in chronic bronchopulmonary infection, we developed a rat model of bronchopulmonary infection with Pseudomonas aeruginosa by using the agar bead method, and determined the kinetics of bacterial and cell number, as well as the concentrations of CINC-1, CINC-2, and CINC-3 in bronchoalveolar lavage (BAL) fluids in this model. The bacterial number in the lung rapidly increased from days 1 to 4, and declined 14 days after challenge. Neutrophil number in BAL fluid increased up to one day after challenge, and then slowly decreased during 14 days post-challenge. Among the CINCs, the local production of CINC-2 alpha sharply increased at day 1 and then decreased until day 4 post-challenge, while the local production of CINC-1 slightly increased at day 1 post-challenge. Neither CINC-2 beta nor CINC-3 were detected during the entire course of the infection. Increased CINC-2 mRNA expression in the lung tissue after challenge was associated with CINC-2 alpha production in BAL fluid. Moreover, an immunohistochemical study demonstrated the localization of CINC-1 and CINC-2 alpha primarily in alveolar macrophages and, to a much lesser extent, in bronchial epithelium of infected lung tissues, whereas CINC-2 beta and CINC-3 were not detected. When anti-CINC-1 or anti-CINC-2 alpha polyclonal antibodies were used for neutralizing neutrophil chemotactic activities in BAL fluids, the anti-CINC-2 alpha antibody inhibited 70% of the chemotactic activity in BAL fluids from infected rats at day 1 after challenge. No inhibition was observed by anti-CINC-1 antibody. These data indicate that CINC-2 alpha, which is produced by alveolar macrophages and bronchial epithelial cells, plays a pivotal role in neutrophil accumulation in the airway of a rat model of chronic bronchopulmonary infection with P. aeruginosa.
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Affiliation(s)
- H Amano
- Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Sakamoto, 1-12-4, Japan
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Amano H, Yamamoto H, Senba M, Oishi K, Suzuki S, Fukushima K, Mukaida N, Matsushima K, Eguchi K, Nagatake T. Impairment of endotoxin-induced macrophage inflammatory protein 2 gene expression in alveolar macrophages in streptozotocin-induced diabetes in mice. Infect Immun 2000; 68:2925-9. [PMID: 10768990 PMCID: PMC97505 DOI: 10.1128/iai.68.5.2925-2929.2000] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
To elucidate the mechanism of the high incidence of lower respiratory tract infections in patients with diabetes mellitus, we investigated the kinetics of production of macrophage inflammatory protein 2 (MIP-2), an important mediator of lung neutrophil recruitment, using mice with streptozotocin-induced diabetes. Intratracheal challenge with 1 mg of lipopolysaccharide (LPS), an endotoxin, per kg of body weight resulted in a time-dependent increase in the levels of MIP-2 protein in bronchoalveolar lavage (BAL) fluid, with the peak concentration (49.4 +/- 13 ng/ml) occurring at 3 h and significant neutrophil accumulation becoming apparent by 3 h in normal mice. In diabetic mice, the peak level of MIP-2 protein in BAL fluid did not occur until 6 h and was reduced to 21.9 +/- 10 ng/ml. Immunohistochemical studies using anti-MIP-2 antibody confirmed that the main cellular source of MIP-2 in the lung after LPS challenge was alveolar macrophages (AMs) in normal mice. The lungs in diabetic mice, however, showed no AMs staining for MIP-2 within 3 h after LPS challenge. PCR analysis using whole-lung RNA showed a time-dependent increase in MIP-2 mRNA levels after LPS instillation. The level of MIP-2 mRNA in diabetic mice was markedly decreased compared to that in normal mice. Our results indicate that impairment of MIP-2 mRNA expression in the AMs in diabetic mice resulted in delayed neutrophil recruitment in the lungs, and this may explain the development and progression of pulmonary infection in diabetes mellitus.
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Affiliation(s)
- H Amano
- Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University, Nagasaki City, Nagasaki, Japan.
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Senba M, Kashige N, Nakashima Y, Miake F, Watanabe K. Cloning of the gene of beta-N-acetylglucosaminidase from Lactobacillus casei ATCC 27092 and characterization of the enzyme expressed in Escherichia coli. Biol Pharm Bull 2000; 23:527-31. [PMID: 10823657 DOI: 10.1248/bpb.23.527] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The gene encoding beta-N-acetylglucosaminidase (GlcNAcase) of Lactobacillus casei ATCC 27092 was cloned and expressed in Escherichia coli. The gene consisted of 1581 nucleotides, and had a promoter, Shine-Dalgarno, and rho-independent type transcription termination sequences typical in bacteria. The protein deduced from the sequence consisted of 526 amino acids, and had a putative signal peptide of 14 amino acids and 5 possible asparagine-linked glycosylation sites. A conserved sequence was homologous to the 12 other hexosaminidases from different origins. The recombinant GlcNAcase (r-GlcNAcase) purified from the transformed E. coli had a MW of 39 kDa and lacked oligosaccharide chains. The isoelectric point and the optimum pH for the activity of r-GlcNAcase were similar to those of original GlcNAcases (o-GlcNAcase). However, the thermal stability was lower, and sensitivity to Cd2+, Fe2+, Cu2+ and sodium dodecyl sulfate (SDS) was higher than those of o-GlcNAcases, suggesting that the oligosaccharide moieties of the enzyme contribute to their stability. The Km value for p-nitrophenyl-N-acetyl-beta-1,4-D-glucosamine (PNP-GlcNAc) of r-GlcNAcase (6.4 microM) implied that the affinity of r-GlcNAcase for the substrate was 200-fold higher than that of the original ones.
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Affiliation(s)
- M Senba
- Faculty of Pharmaceutical Sciences, Fukuoka University, Japan
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Onizuka T, Oishi K, Ikeda T, Watanabe K, Senba M, Suga K, Nagatake T. [A fatal case of streptococcal toxic shock-like syndrome probably caused by acupuncture]. Kansenshogaku Zasshi 1998; 72:776-80. [PMID: 9745230 DOI: 10.11150/kansenshogakuzasshi1970.72.776] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
A 41-year-old male received acupuncture in the right shoulder for the sake of arthralgia. Three days after acupuncture he was admitted due to severe epigastralgia. Erythematous change and swelling were observed around the right shoulder. A study by magnetic resonance showed an increased signal intensity in a portion of the right subscapular muscle. Four hours after admission he became hypotensive. The erythematous and necrotic change in the right shoulder skin rapidly spread. Excisional debridement in the right lateral chest wall was immediately done. However, the patient died one day after admission despite administration of a high-dose ampicillin and other supportive therapies. Bacteriological and histological examinations confirmed severe streptococcal myositis. This is a case report of toxic shock-like syndrome probably caused by acupuncture.
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Affiliation(s)
- T Onizuka
- Department of Internal Medicine, Institute of Tropical Medicine, Nagasaki University
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Dilger H, Schwager M, Tregenna-Piggott PLW, Roduner E, Reid ID, Arseneau DJ, Pan JJ, Senba M, Shelley M, Fleming DG. Addition Kinetics and Spin Exchange in the Gas Phase Reaction of the Ethyl Radical with Oxygen. ACTA ACUST UNITED AC 1996. [DOI: 10.1021/jp963480i] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Senba M. Electron spin exchange with O2: Effects on the muon spin rotation, the electron spin resonance, and the positronium lifetime. Phys Rev A 1995; 52:4599-4615. [PMID: 9912799 DOI: 10.1103/physreva.52.4599] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Senba M. [Pain control during operation and postoperative quality of life of TAE patients]. Kango 1994; 46:149-61. [PMID: 8715440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Shelley M, Arseneau D, Senba M, Pan J, Snooks R, Kreitzman S, Fleming D, Roduner E. Muon Spin Relaxation Studies of Cyclohexadienyl Radicals in Nausy. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/s0167-2991(08)64147-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023]
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Zhong XY, Senba M, Gu JN, Itakura H. B-cell antigen marker expression in nasopharyngeal carcinoma. Zentralbl Pathol 1993; 139:281-6. [PMID: 7510513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Immunohistochemical analysis was carried out to examine the characteristics of nasopharyngeal carcinoma (NPC) using 38 biopsy cases obtained from southern China. These cases were divided into 3 groups according to their predominant pattern associated with cell and tissue differentiation which is based on World Health Organization (WHO) classification as follows: 6 cases of squamous cell carcinoma (16%), 25 cases of differentiated non-keratinizing carcinoma (66%), 7 cases of undifferentiated carcinoma (18%). All tumor tissues reacted with MB-1, but they did not react with L26 (CD20), 4KB5 (CD45R), MT-1, and leukocyte common antigen (LCA). Keratin and epithelial membrane antigen (EMA) as epithelial markers focally stained NPC tissues in all cases. Carcinoembryonic antigen (CEA)-positive staining was detected in 7 (28%) of the 25 cases of differentiated non-keratinizing carcinoma and in 3 (43%) of the 7 cases of undifferentiated carcinoma; thus, of 38 cases, 10 (26%) were CEA-positive. On the other hand, squamous cell carcinoma cases did not react with CEA. These NPC tissues did not react with S-100 protein, alpha-1-antichymotrypsin (ACT), lysozyme, vimentin, and desmin. Therefore, it is concluded that some cases of NPC are difficult to distinguish from malignant lymphoma. In certain cases, NPC may be distinguished from malignant lymphoma, using immunohistochemical methods for the detection of MB-1, keratin, EMA, and LCA. Specifically, this evidence suggests that MB-1 may be useful as a tumor marker of NPC. Moreover, the CEA reaction to NPC may be related to the cell differentiation.
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Affiliation(s)
- X Y Zhong
- Department of Pathology, Nagasaki University, Japan
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Pan JJ, Senba M, Arseneau DJ, Kempton JR, Fleming DG, Baer S, Gonzalez AC, Snooks R. Muonium atom spin exchange with alkali-metal vapors: Mu+Cs. Phys Rev A 1993; 48:1218-1226. [PMID: 9909725 DOI: 10.1103/physreva.48.1218] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Chow KH, Kiefl RF, Schneider JW, Hitti B, Estle TL, Lichti RL, Schwab C, DuVarney RC, Kreitzman SR, MacFarlane WA, Senba M. Muonium dynamics in Si at high temperatures. Phys Rev B Condens Matter 1993; 47:16004-16007. [PMID: 10006012 DOI: 10.1103/physrevb.47.16004] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Senba M, Nakamura T, Senba MI, Watanabe M, Zhong X, Itakura H. Long-term trend of decreasing frequency of hepatitis B virus infection. Acta Virol 1993; 37:199-201. [PMID: 8105668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Statistical and histopathological analysis was carried out to determine whether hepatitis B surface antigen (HBsAg) with the autopsy diagnosis of hepatitis, cirrhosis, and hepatocellular carcinoma declined during 1964-1991. In this study, the liver specimens from 673 autopsy cases at Nagasaki University Hospital were used, and these materials were stained for HBsAg with immunoperoxidase method. For statistical calculation, we used Cochran's chi-square test with one degree of freedom for linear trend for proportions. We investigated HBsAg positive rates for the four time periods, 1964-1970, 1971-1977, 1978-1984, and 1985-1991, and for the diagnosis of hepatitis, cirrhosis, and hepatocellular carcinoma. The decreasing linear trend of HBsAg positivity with time was significant for hepatocellular carcinoma and cirrhosis.
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Affiliation(s)
- M Senba
- Department of Pathology, Nagasaki Unviersity, Japan
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Storchak V, Morris G, Chow K, Hardy W, Brewer J, Kreitzman S, Senba M, Schneider J, Mendels P. Muon—nuclear quadrupolar level crossing resonance in solid nitrogen. Evidence for N2μ+ ion formation. Chem Phys Lett 1992. [DOI: 10.1016/0009-2614(92)80089-t] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Senba M. Prevention of chronic carriage of hepatitis B virus infection in Ethiopian immigrants. Isr J Med Sci 1992; 28:308-9. [PMID: 1597365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Senba M, Watanabe K, Yoshida K, Ochi S, Matsumoto K, Yano K, Itakura H. Endocarditis caused by Candida parapsilosis. Southeast Asian J Trop Med Public Health 1992; 23:138-41. [PMID: 1326123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The authors report a case of endocarditis caused by Candida parapsilosis. To the best of our knowledge, a case has not been described previously in Japan in the English literature. A battery of 8 peroxidase-labeled lectins was tested on sections of paraffin-embedded tissue to determine which lectin could be used in the microscopic diagnosis of C. parapsilosis. One lectin, from Archis hypoaea (PNA) was found to react with C. parapsilosis. On the other hand, C. albicans, Aspergillus, Mucor, and Cryptococcus did not react with A. hypoaea (PNA). On fluorescence microscopic study, C. parapsilosis was not fluorescent, but other fungi were fluorescent when exposed to ultraviolet illumination. Therefore, we propose new procedures for identification of C. parapsilosis in tissue sections using lectin histochemistry and fluorescence microscopy.
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Affiliation(s)
- M Senba
- Department of Pathology, Nagasaki University, Japan
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Kawai K, Baba K, Senba M, Nakamura T, Doi Y, Yamaguchi T, Hashiba K, Tsuchiyama H. Effect of the adrenal inhibitor trilostane on the morphology of the adrenocortical cells of Dahl salt-sensitive and Dahl salt-resistant rats. Int J Exp Pathol 1991; 72:451-62. [PMID: 1653005 PMCID: PMC2001959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The effects of trilostane on the adrenal cortex of Dahl salt-sensitive (DS) and Dahl salt-resistant (DR) rats were investigated morphometrically, histochemically, ultrastructurally and biochemically. The statistical analysis indicated that trilostane induced a significant increase in the adrenal weight and the surface area of cells and nuclei in the zona fasciculata (ZF) of the adrenal cortex of DS and DR rats (P less than O.OI). DS rats treated with trilostane revealed marked accumulation of large amounts of lipid droplets and a decrease in the activity of 3 beta-hydroxysteroid dehydrogenase (3 beta-HSD) in the ZF. Ultrastructurally, the mitochondria of the ZF in DS rats treated with trilostane revealed swelling of matrix with a loss of cristae and occasional interruption of the membranes of mitochondria. Some of them had a continuity with lipid vacuoles or SER, presenting a characteristic 'feather'-like appearance. Other characteristic findings in DS rats treated with trilostane were a marked villous proliferation of plasma membranes with numerous dense bodies, occasional coated pits, and pinocytic vesicles in the outer portion of the ZF. In DS and DR rats the plasma level of ACTH increased, and corticosterone decreased significantly (P less than O.OI) after treatment with trilostane. These morphological alterations were considered to be an expression of the inhibitory effects of trilostane on the adrenal steroidogenesis in DS and DR rats, more especially in DS rats. Simultaneously there were confirmed morphological alterations in the cells of the ZF, reflecting the feedback stimulation of endogenous ACTH. The cells of the ZF of DS rats were more responsive to suppression by trilostane than those of DR rats.
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Affiliation(s)
- K Kawai
- Department of Pathology, Nagasaki University School of Medicine, Japan
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Senba M, Kawai K, Chiyoda S, Takahara O. Metastatic liver calcification in adult T-cell leukemia-lymphoma associated with hypercalcemia. Am J Gastroenterol 1990; 85:1202-3. [PMID: 2389740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Itakura H, Toriyama K, Uzuta F, Eto H, Komuro S, Murata K, Kiyohara T, Senba M, Motoda A. [Kaposi's sarcoma]. Gan To Kagaku Ryoho 1990; 17:620-6. [PMID: 2157369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Kaposi's sarcoma (KS) (Kaposi, 1872) is classified into at least three forms: 1) the classic form; in elderly men of southern European, Jewish, and Italian origin, 2) the endemic form; among native populations in equatorial Africa and 3) the epidemic form; as a complication of AIDS. As one additional form could be posttransplantation KS in organ transplant recipients. Histologically, KS is composed of two characteristic features; a proliferation of angiomatous lesion and of spindle-shaped cells. The pathological entity of the disease is still controversial. As a cause of the disease, human cytomegalovirus (HCMV) has been the subject based on epidemiologic, serologic, geopathologic and histopathologic observations. About half of KS cases with AIDS has shown evidence of HCMV infection as cytomegalic viral inclusions of the cells. In contrast, about 30% of AIDS cases without KS showed histological HCMV infection. A connection between HCMV and KS was suggested by the detection of herpes-type virus particles in several KS tissue culture lines and in a tumor specimen. DNA and RNA homologous with HCMV sequences have been detected in tumor tissue of both endemic and epidemic KS by electrophoretic methods. HCMV sequences was detected in extracted DNA of 30% of classic KS, using Southern blot technique. In situ hybridization technique using specific DNA probes for HCMV has been developed to reveal endogenous nucleic acid sequences in fixed tissue sections. However, some reports showed that by the in situ technique only a small number of KS cells in the AIDS cases and no case of the classic KS were positive for HCMV within KS lesions. HCMV infections are ubiquitous. There is a very high seropositivity of HCMV in African inhabitants as well as in Africans with endemic KS. A strong association between HCMV and KS was not known. As for HIV itself in AIDS with KS, previous studies have showed the presence of chromosomal abnormalities of KS cells, but not revealed the presence of HIV DNA sequences in KS. Vascular tumors were produced by NIH/3T3 cells transfected with KS DNA of AIDS. An oncogene isolated by transfection of KS DNA encodes a growth factor; FGF. Isolation of rearranged human transforming gene following transfection of KS DNA was performed. DNA having transforming genetic elements which have been repetitively transmitted into phenotypically normal NIH/3T3 cells through cycles of transfection was isolated from tissues of KS with AIDS.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- H Itakura
- Dept. of Pathology, Institute of Tropical Medicine, Nagasaki University
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Senba M. Autofluorescent substances as control specimens. Hum Pathol 1990; 21:353-4. [PMID: 2155869 DOI: 10.1016/0046-8177(90)90240-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Senba M. Relationship between iron accumulation and portal fibrosis. Isr J Med Sci 1989; 25:650-1. [PMID: 2592182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Yamashiro T, Toda T, Takushi Y, Hokama S, Senba M. [A case report of giant cell granuloma of the jaw]. Rinsho Byori 1989; 37:1061-5. [PMID: 2607660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
A giant cell granuloma of the mandible seen in a 16 month-old boy was reported. Histopathology showed that the lesion consisted basically of granulation tissue with multinucleated giant cells, spindle-shaped and polygonal stromal cells. No atypia was seen in giant cells or stromal cells. Electron microscopic examination revealed that multinucleated giant cells possessed microvillous structure on their cytoplasm and were rich in organelles such as endoplasmic reticulum, mitochondria and dense bodies. Stromal cells consisted of macrophage-like and fibroblastic cells. Immunohistochemical examination demonstrated a large number of giant cells and stromal cells that were strongly positive for the antibodies of alpha-1-antitrypsin and alpha-1-antichymotrypsin. These morphological findings suggest that macrophage-like stromal cells are the precursors to giant cells.
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Senba M, Kawai K. Immunohistochemical reactivity of phagocytic and non-phagocytic histiocytes in lymph nodes with lysozyme, alpha-1-antichymotrypsin, S-100 protein, alkaline phosphatase, and acid phosphatase. Okajimas Folia Anat Jpn 1989; 66:61-9. [PMID: 2812676 DOI: 10.2535/ofaj1936.66.2-3_61] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Yellow-brown bodies were observed in the sinusoids of lymph node and histiocytes. The authors confirmed immunohistochemical reactivity of lysozyme, alpha-1-antichymotrypsin, S-100 protein, alkaline phosphatase, and acid phosphatase in non-phagocytic and phagocytic histiocytes which contained yellow-brown bodies. Phagocytic histiocytes (histiocytes with yellow-brown bodies) were not reacted with lysozyme, alpha-1-antichymotrypsin, S-100 protein, alkaline phosphatase, and acid phosphatase. On the other hand, non-phagocytic histiocytes were reacted with lysozyme, alpha-1-antichymotrypsin, S-100 protein, alkaline phosphatase, and acid phosphatase.
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Senba M, Fleming DG, Arseneau DJ, Garner DM, Reid ID. Muonium depolarization by electron spin exchange with O2 gas in the temperature range 90-500 K. Phys Rev A Gen Phys 1989; 39:3871-3883. [PMID: 9901709 DOI: 10.1103/physreva.39.3871] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Senba M. Lectin histochemistry of fungi. Arch Pathol Lab Med 1989; 113:327-8. [PMID: 2468321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Senba M, Nakamura T, Itakura H. Relationships among iron accumulation, cirrhosis, and hepatitis B virus infection in Bantu siderosis. Ann Soc Belg Med Trop 1989; 69:77-8. [PMID: 2730176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Abstract
Histochemical, immunohistochemical, and ultrastructural characteristics of eosinophilic globules in pheochromocytoma of the adrenal medulla are described. The globules were observed in 7 (63.5%) out of 11 cases of pheochromocytoma of the adrenal medulla. These globules were eosinophilic, PAS-positive with and without diastase predigestion, phosphotungstic acid hematoxylin (PTAH) positive, and autofluorescent under ultraviolet illumination. Although almost all globules were not stained with neuron specific enolase (NSE) using the immunoperoxidase method, a few globules were stained positive. The lectins of Triticum vulgaris (WGA) and Ricinus communis (RCA-120) were weakly bound to most of the eosinophilic globules. Immunohistochemical reactions for alpha-fetoprotein (AFP), alpha-l-antichymotrypsin (ACT), and human chorionic gonadotropin (HCG) revealed negative reaction in these globules. An ultrastructural study revealed no relationship between these globules and chromaffin secretory granules. These findings suggested that the eosinophilic globules in pheochromocytoma of the adrenal medulla were not related to the chromaffin secretory granules and might be some kind of complex protein.
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Affiliation(s)
- K Kawai
- Department of Pathology, Nagasaki University School of Medicine, Japan
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Itoh K, Fukuoka H, Naitoh A, Senba M, Katsuta S, Fukuda Y, Dohi K, Murakami T. [Cystic adventitial disease of the popliteal artery]. Rinsho Hoshasen 1988; 33:1159-61. [PMID: 3210341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Senba M. Fluorescence of mucormycosis. Am J Clin Pathol 1988; 90:229. [PMID: 3394664 DOI: 10.1093/ajcp/90.2.229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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Arseneau DJ, Fleming DG, Senba M, Reid ID, Garner DM. The ion–molecule reactivity of the positive muon molecular ions HeMu+ and NeMu+. CAN J CHEM 1988. [DOI: 10.1139/v88-325] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Thermal (300 K) ion–molecule reaction rates are measured, using the µSR (muon spin rotation) technique, for the muonated rare gas molecular ions HeMu+ and NeMu+ reacting with NO, O2, N2O, NH3, CF4, C2H4, TMS, and CH3NO2. In almost every case (excepting O2), both charge transfer (ke) and muon transfer (kµ) contribute to the reaction rate. Reaction is believed to occur from ro-vibrational excited states, [HeMu+]* and [NeMu+]*, due to the poor efficiency of He and Ne moderators for collisional deactivation. The total experimental rate constants, kexp = kµ + ke, are generally in excellent agreement with total capture rates predicted by the simple ADO theory, regardless of the degree of internal excitation. Comparisons with literature values for corresponding protonated ion reaction rates with O2 and C2H4 reveal little or no isotope effect, although it is noted that these reactions are dominated by proton transfer, in contrast to the µSR results.
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Senba M. More on large intracytoplasmic bodies. Am J Clin Pathol 1988; 90:119-20. [PMID: 3389341 DOI: 10.1093/ajcp/90.1.119b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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Senba M, Nakamura T, Toda T, Matsumura H. Decreasing frequency, with time, of hepatitis B surface antigen positive liver biopsy in hepatitis, cirrhosis, and hepatocellular carcinoma. Lancet 1988; 1:588-9. [PMID: 2894519 DOI: 10.1016/s0140-6736(88)91380-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Senba M, Toda Y, Yamashita H. Black thyroid associated with minocycline therapy: histochemical and ultrastructural studies on the brown pigment. Isr J Med Sci 1988; 24:51-3. [PMID: 3346152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The brown pigment found in the black thyroid, associated with minocycline therapy, was studied histochemically and ultrastructurally. The brown pigment was Fontana-Masson silver-positive, and was negative for iron, for autofluorescence under uv illumination, for periodic acid Schiff (PAS) and for acid-fast iodine peroxidase (AFIP) lipofuscin, and was bleached with potassium permanganate. The light and electron microscopic studies suggested that the pigment resembled melanin. Although the mechanism of the pigment deposition is not clear, a possible explanation may be that the pigment is related to direct oxidative degradation products of minocycline.
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Affiliation(s)
- M Senba
- Department of Pathology, Nagasaki University, Japan
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Harshman DR, Mills AP, Beveridge JL, Kendall KR, Morris GD, Senba M, Warren JB, Rupaal AS, Turner JH. Generation of slow positive muons from solid rare-gas moderators. Phys Rev B Condens Matter 1987; 36:8850-8853. [PMID: 9942727 DOI: 10.1103/physrevb.36.8850] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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Abstract
Eosinophilic globules provide an important clue for diagnosis of Kaposi's sarcoma (KS). These globules were stained with periodic acid Schiff (PAS), periodic acid Schiff reagent after diastase digestion, phosphotungstic acid hematoxylin (PTAH) and autofluorescence under ultraviolet illumination. By these methods, however, eosinophilic globules in KS could not be readily identified. Therefore, we developed a new procedure for rapid identification of eosinophilic globules in KS tissues.
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