201
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Shiina H, Igawa M, Shigeno K, Wada Y, Yoneda T, Shirakawa H, Ishibe T, Shirakawa R, Nagasaki M, Shirane T, Usui T. Immunohistochemical analysis of estramustine binding protein with particular reference to proliferative activity in human prostatic carcinoma. Prostate 1997; 32:49-58. [PMID: 9207957 DOI: 10.1002/(sici)1097-0045(19970615)32:1<49::aid-pros7>3.0.co;2-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND The estramustine binding protein (EMBP) specifically binds to estramustine and was first discovered in the rat ventral prostate. However, the physiological property of EMBP in the human prostate still remains to be elucidated. To elucidate whether EMBP is interrelated with cellular proliferation in human prostatic carcinoma (PC), the change in EMBP immunostaining during luteinizing hormone-releasing hormone (LH-RH) analog administration or during Cis-platinum-based chemotherapy, and the difference in EMBP immunostaining between hormone refractory (hr-PC) and untreated PC were analyzed. METHODS Forty-six patients with histologically proven untreated PCs (34 were treated with LH-RH analog and 12 were treated with chemotherapy as an initial therapy) and 14 with hr-PC were used in this study. PC tissues were obtained before and 3 months after the initial therapy. The changes in immunostainings for EMBP, proliferating cell nuclear antigen (PCNA), and nm23 protein were compared with the change in serum prostate-specific antigen (PSA) level and the histological response during the treatment. RESULTS The increased EMBP expression was observed in tumors with high histological grade and high clinical stage as well as in hr-PC. In untreated PC, EMBP expression weakly correlated with PCNA or nm23 protein immunoreactivity. In PC receiving LH-RH analog, EMBP expression was significantly reduced after treatment, however, no significant changes were observed in PCNA or nm23 protein immunoreactivity. In addition, EMBP expression before the treatment significantly correlated with the serum PSA change, while PCNA expression and nm23 protein immunoreactivity did not. On the other hand, no significant relationship was observed between histological changes induced by the LH-RH analog and immunostainings for EMBP, PCNA, and nm23 protein before treatment. In PC patients receiving chemotherapy, immunostainings for EMBP, PCNA, and nm23 protein were not significantly changed during the treatment. EMBP immunoreactivity was significantly higher in hr-PC than in untreated PC with paralleled change of PCNA expression and nm23 protein immunoreactivity. CONCLUSIONS These observations indicate that EMBP is androgen regulated in some PCs. However, EMBP expression is demonstrated even in hr-PC and is interrelated with cellular proliferation especially in hr-PC.
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Affiliation(s)
- H Shiina
- Department of Urology, Shimane Medical University, Enya-cho Izumo, Japan
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202
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Taniguchi H, Yomota E, Kume E, Shikano T, Endo T, Nagasaki M. Effect of T-0632, a cholecystokininA receptor antagonist, on experimental acute pancreatitis. Jpn J Pharmacol 1997; 73:105-12. [PMID: 9074944 DOI: 10.1254/jjp.73.105] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Effects of a new cholecystokinin (CCK)A-receptor antagonist, T-0632 [sodium (S)-1-(2-fluorophenyl)-2, 3-dihydro-3-[(3-isoquinolinylcarbonyl) amino]-6-methoxy-2-oxo-1H-indole-3-propanoate], on caerulein-induced and pancreatic duct ligation-induced pancreatitis models were studied and compared with the CCKA-receptor antagonist loxiglumide and the orally active protease inhibitor camostate, respectively. In rats, orally administered T-0632 potently prevented the caerulein-induced increases in pancreatic digestive enzymes in plasma and suppressed the histological changes in the pancreas. The estimated ED50 values of T-0632 and loxiglumide were 0.0092 and 8.9 mg/kg, respectively. In dogs, T-0632 (0.1, 1 mg/kg, i.d.) prevented the caerulein-induced increase in plasma amylase activity in a dose-dependent manner. Loxiglumide (100 mg/kg, i.d.) did not show any preventive effects. In pancreatic duct ligation (6 hr)-induced pancreatitis of the rat, T-0632 (0.001-0.1 mg/kg, p.o.) partially prevented both the increase in plasma amylase activity and the histological changes in the pancreas, whereas camostate (10, 100 mg/kg, p.o.) did not show any preventive effects. In pancreatic duct ligation (3 hr)-induced pancreatitis, caerulein injection (1 microgram/kg, s.c.) caused a further increase in plasma amylase activity, and T-0632 (0.01, 0.1 mg/kg, p.o.) dose-dependently decreased the aggravation by caerulein. We conclude that T-0632 showed preventive effects on all of these pancreatitis models by oral or intraduodenal administration. These results suggest that CCK plays an important role in progression and aggravation of acute pancreatitis, and T-0632 may have a therapeutic value in these disease states.
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Affiliation(s)
- H Taniguchi
- Lead Optimization Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan
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203
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Abstract
We used the pylorus ligation model to determine the role of vagus nerves and gastrin in acid secretion induced by mechanical and chemical stimulation of the gastric lumen in anesthetized male rats. Gastric distension induced by intragastric instillation of saline resulted in a 17-fold increase in acid secretion over the basal level without an alteration in serum gastrin levels. Distension-stimulated acid secretion was inhibited by bilateral subdiaphragmatic vagotomy but not by CI-988, a gastrin receptor antagonist. Intragastric peptone produced a 71-fold increase in acid secretion over the basal level that was accompanied by a significant increase in serum gastrin levels. Whereas vagotomy almost abolished peptone-stimulated acid secretion, CI-988 inhibited peptone-stimulated acid secretion by only 50%. We conclude that the vagus nerves mediate acid secretion by mechanical and chemical stimulation and that gastrin mediates acid secretion partly by chemical stimulation but not by mechanical stimulation in anesthetized male rats.
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Affiliation(s)
- T Noto
- Lead Optimization Research Laboratory, Tanabe Seiyaku Co., Ltd., Toda, Saitama, Japan
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204
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Shojiku H, Nagasaki M, Yasumura S, Zhang RL, Akaogi K, Ito M, Watanabe Y. Vestibular Evoked Myogenic Potential among Dizzy Patients. ACTA ACUST UNITED AC 1997. [DOI: 10.3757/jser.56.354] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [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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205
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Abstract
Solid and cystic tumor (SCT) of the pancreas predominantly occurs in women, and the occurrence in men is extremely rare. We experienced a male case of SCT. A 38-year-old man was admitted with the complaint of upper abdominal pain. CT scan showed the presence of a mass in the head of the pancreas. The mass was composed of high density areas and low density areas. Ultrasonograms revealed the mass being composed of high echoic areas and low echoic areas. The mass was hypovascular on angiography. SCT was suspected and pancreaticoduodenectomy was performed. The cut surface of the tumor showed mainly cystic degenerative areas containing dark red hemorrhagic materials. Microscopically, there were solid areas in the periphery and pseudopapillary areas in the center. No metastasis was found in the removed lymph nodes. The tumor cells were not stained by Grimelius' silver stain. The tumor cells were positive for alpha-1-antitrypsin (AAT) and neuron-specific enolase (NSE). Pancreatic hormones such as insulin, glucagon, and somatostatin were all negative. Electron micrograph showed that tumor cells were rich in mitochondria. Zymogen granules and neurosecretory granules were not detected. Estrogen receptor (ER) and progesterone receptor (PR) were both negative.
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Affiliation(s)
- K Ohiwa
- Department of Surgery, Muikaichi Hospital, Muikaichi, Japan
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206
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Taniguchi H, Yazaki N, Yomota E, Shikano T, Endo T, Nagasaki M. Pharmacological profile of T-0632, a novel potent and selective CCKA receptor antagonist, in vivo. Eur J Pharmacol 1996; 312:227-33. [PMID: 8894600 DOI: 10.1016/0014-2999(96)00473-6] [Citation(s) in RCA: 11] [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: 02/02/2023]
Abstract
The pharmacological profile of a new CCKA receptor antagonist, T-0632 [sodium (S)-1-(2-fluorophenyl)-2,3-dihydro-3-[(3-isoquinolinylcarbonyl) amino]-6-methoxy-2-oxo-1H-indole-3-propanoate], was examined in in vivo studies and compared with those of L-364, 718 [3S(-)-N-(2,3-dihydro-1-methyl-2-oxo-5-phenyl-1H-1, 4-benzodiazepine-3-yl)-1 H-indole-2-carboxamide] and loxiglumide [D.L-4-(3,4-dichlorobenzoylamino)-5-(N-3-methoxypropyl-pentylam ino)-5- oxopentanoic acid]. In rats, intravenously administered T-0632, L-364,718 and loxiglumide dose dependently inhibited cholecystokinin octapeptide (CCK-8)-stimulated pancreatic exocrine secretion with estimated ED50 values of 0.025, 0.016 and 1.8 mg/kg, respectively. The ED50 values for intraduodenal administration of these compounds were 0.040, 0.26 and 3.0 mg/kg, respectively. In mice, orally administered T-0632 prevented caerulein-induced pancreatitis, CCK-8-induced inhibition of gastric emptying and CCK-8-induced gallbladder emptying in dose-dependent manners with ED50 values of 0.028, 0.04, and 0.12 mg/kg, respectively. The effect of T-0632 for caerulein-induced pancreatitis was 4-fold more potent than that for gallbladder emptying. In contrast, the effects of L-364,718 and loxiglumide for caerulein-induced pancreatitis were 2-4-fold weaker than those for gallbladder emptying. In dogs, T-0632 and loxiglumide maximally inhibited CCK-8-stimulated pancreatic amylase secretion at doses of 0.01 and 10 mg/kg, respectively. At these doses, the effect of T-0632 on CCK-8-induced increase in the gallbladder intraluminal pressure was weaker than that of loxiglumide. These results suggest that T-0632 has a potent antagonistic action on CCKA receptors in several animal species and the effects of T-0632 are more selective for the pancreas over the gallbladder compared with L-364,718 and loxiglumide.
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Affiliation(s)
- H Taniguchi
- Lead Optimization Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan.
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207
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Morikawa K, Morikawa S, Miyawaki T, Nagasaki M, Torii I, Imai K. Constitutive expression of granulocyte-colony stimulating factor receptor on a human B-lymphoblastoid cell line. Br J Haematol 1996; 94:250-7. [PMID: 8759883 DOI: 10.1046/j.1365-2141.1966.d01-1806.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [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: 02/02/2023]
Abstract
The present study demonstrated that a human B-cell line derived from non-Hodgkin's lymphoma. HCF-MLpN. constitutively expressed G-CSF receptor on the cell surface. G-CSF binding to the cell surface was shown by immunofluorescence staining using biotinylated G-CSF preparation and analysed by flow cytometry. Specific binding of G-CSF to the cells was shown by pretreatment with unlabelled G-CSF. In the radioreceptor assay and Scatchard plot analysis using radiolabelled ligand, MLpN cells revealed a single species of binding site with an equilibrium dissociation constant of 167 (153-182) pM and a maximal binding site per cell of 1076 (1044-1116). The G-CSF receptor mRNA transcript was exhibited in the RNA from MLpN cells by reverse transcriptase polymerase chain reaction procedure. [3H]thymidine incorporation and trypan blue exclusion showed that the G-CSF receptor was capable of transducing the growth signal to HCF-MLpN cells. A small fraction of fresh B blasts from six patients with B-cell lymphoma and leukaemia displayed G-CSF binding by two-colour immunofluorescence staining. In contrast, a panel of seven B-cell lines was negative for the binding to biotinylated G-CSF preparation. These results suggest that the phenotype of G-CSF binding may be lost during the culture. The expression of G-CSF receptor in HCF-MLpN cells appeared to be exceptional.
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Affiliation(s)
- K Morikawa
- Department of Internal Medicine, Shimane Medical University, Japan
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208
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Abstract
The pharmacological profile of a new CCKA receptor antagonist, T-0632 [sodium (S)-3-[1-(2-fluorophenyl)-2,3-dihydro-3-[(3-isoquinolinyl)-carbonyl] amino-6-methoxy-2-oxo-1-H-indole]propanoate], was examined in in vitro studies and compared with those of L-364,718 [3S(-)-N-(2,3-dihydro-1-methyl-2-oxo-5-phenyl-1H-1, 4-benzodiazepine-3-yl)-1H-indole-2-carboxamide] and loxiglumide [D,L-4-(3,4-dichlorobenzoylamino)-5-(N-3-methoxypropyl-pentylam ino)-5- oxopentanoic acid]. T-0632 inhibited the specific binding of [125I]CCK-8 to rat pancreatic CCKA receptor in a concentration-dependent and competitive manner. The Ki value of T-0632 for the CCKA receptor was estimated to be 0.24 nM, which was 23 000-fold less than the Ki value (5600 nM) for guinea pig CCKB receptor. L-364,718 and loxiglumide were 1500- and 64-fold selective for CCKA over CCKB receptor, respectively. T-0632, L-364,718 and loxiglumide inhibited CCK-8 (100 pM)-stimulated amylase release from rat pancreatic acini in a concentration-dependent manner with IC50 values of 5.0 nM, 5.0 nM and 3.0 microM, respectively. In the isolated rabbit gallbladder smooth muscle, T-0632 and loxiglumide competitively inhibited CCK-8-induced contraction with pA2 values of 8.5 and 7.0, respectively. However, L-364,718 showed an apparent non-competitive antagonism. The IC50 values of T-0632, L-364,718 and loxiglumide for CCK-8 (30 nM)-induced contraction were 31 nM, 4.9 nM and 1300 nM, respectively. The inhibitory effects of T-0632 and loxiglumide in gallbladder smooth muscle were readily reversible, but L-364,718 showed a long-lasting inhibition. These results suggest that T-0632 is a potent, reversible and more selective CCKA receptor antagonist compared with L-364,718 and loxiglumide.
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Affiliation(s)
- H Taniguchi
- Lead Optimization Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan
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209
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Shojaku H, Nagasaki M, Yasumura S, Zhang RL, Akaogi K, Ito M, Watanabe Y. Click-evoked Cervical Myogenic Potential in Humans. ACTA ACUST UNITED AC 1996. [DOI: 10.3757/jser.55.538] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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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210
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Abstract
A new monoclonal antibody (mAb), 1E8 (IgG1, kappa), was obtained from a hybridoma prepared by fusion of mouse myeloma cells (NS-1) with splenic cells of mice immunized with a human B blastic malignant lymphoma cell line, HPE-Ret-3 (Ret-3). The mAb showed a reactivity unrestricted to a specific cell lineage on flow cytometrical analysis of the reactivity with human lympho-hematopoietic cell lines. In peripheral blood, 1E8 reacted with the cells of all lineage, that is, lymphocytes, monocytes, granulocytes and platelets, even though its intensity was very low by immunohistochemistry. Immunohistochemical examination of human tonsil with 1E8 showed a characteristic staining pattern. Positive cells scattered in follicular (mantle zone and germinal center), parafollicular (T-dependent area), subepithelial and interstitial connective tissue areas. These positive cells seemed to be categorized into dendritically shaped cells (DSC), including dendritic cells (DC) and a subpopulation of macrophages in follicles, interdigitating cells (IDC) and irregularly shaped mononuclear cells. The localization of 1E8 antigen staining was similar to that of integrin CD11c, although its distribution on hematopoietic cell lines did not coincide with that of 1E8 antigen. Immunobiochemical studies showed that 1E8 bound two cell surface proteins with molecular size of 70,000-90,000 and 35,000 Da each. Consequently, 1E8 antigen might be a novel marker of DSC.
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Affiliation(s)
- M Nagasaki
- Department of Pathology, Shimane Medical University, Izumo, Japan
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211
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Taniguchi H, Nagasaki M, Tamaki H. Effects of cholecystokinin (CCK)-JMV-180 on the CCK receptors of rabbit pancreatic acini and gallbladder smooth muscle. Jpn J Pharmacol 1995; 67:219-24. [PMID: 7543168 DOI: 10.1254/jjp.67.219] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Effects of cholecystokinin (CCK)-JMV-180, a CCK analog, on the CCK receptor functions of isolated rabbit pancreatic acini and gallbladder smooth muscle were studied. When the pancreatic acini were incubated with increasing concentrations of CCK-8, stimulation of amylase release reached a maximum at 3 nM and then declined with the increasing concentration of CCK-8. CCK-JMV-180 also caused a dose-dependent amylase release stimulation, which plateaued and remained unchanged above 300 nM at about 50% of the maximal stimulation by CCK-8. CCK-JMV-180 above 100 nM caused a rightward shift of the downstroke of the dose-response curve for CCK-8 (pA2 = 7.5). In the gallbladder smooth muscle, CCK-8 caused a dose-dependent contraction, but CCK-JMV-180 totally lacked this property. Instead, CCK-JMV-180 caused a rightward shift of the dose-response curve for CCK-8 (pA2 = 7.9). These results suggest that CCK-JMV-180 distinguishes between the CCKA receptors associated with pancreatic exocrine secretion in the acini and those involved in contraction of the isolated gallbladder smooth muscle in rabbits.
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Affiliation(s)
- H Taniguchi
- Pharmacological Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan
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212
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Nagasaki M, Harada T, Torii I, Nakano A, Furuya H, Tanaka J, Hirai K, Morikawa S. An autopsy case of acquired immune deficiency syndrome (AIDS) with preceding aplastic anemia. Pathol Int 1994; 44:850-6. [PMID: 7866568 DOI: 10.1111/j.1440-1827.1994.tb01683.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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: 01/27/2023]
Abstract
A case of acquired immunodeficiency syndrome (AIDS) with preceding aplastic anemia is reported. The patient was a 36 year old female who had been diagnosed as having aplastic anemia 10 years before and thereafter had received multiple transfusions. Human immunodeficiency virus (HIV)-seropositivity was revealed 10 months prior to her death, but no particular clinical signs indicating HIV infection, pre-AIDS or onset of AIDS were recognized before serological diagnosis, although the slow progression of leukopenia was noted along with thrombocytopenia. Her general condition deteriorated during the last 10 months accompanied by an acute decrease in the CD4/CD8 ratio. Autopsy revealed full-blown AIDS: systemic aspergillosis, progressive multifocal leukoencephalopathy, Epstein-Barr virus-related B cell lymphoma arising in the diaphragm and severe lymphocyte depletion in the lymph nodes and spleen. Markedly hypoplastic bone marrow was considered to be primarily attributable to the aplastic anemia but the affection of AIDS was not excluded. The possible transmission route of HIV and the effect of the preceding aplastic anemia on the infection and clinical course of AIDS are discussed.
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Affiliation(s)
- M Nagasaki
- Department of Pathology, Shimane Medical University, Izumo, Japan
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213
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Nagasaki M, Itagaki M, Komori S, Ohashi H. Effect of trimebutine on contractile responses in skinned ileal smooth muscle. Jpn J Pharmacol 1994; 65:249-55. [PMID: 7799525 DOI: 10.1254/jjp.65.249] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The effects of trimebutine on Ca2+ release and modulation of Ca2+ sensitivity of contractile elements induced by carbachol (CCh) were investigated using a tension measuring method in beta-escin-treated skinned smooth muscle of the longitudinal muscle layer of guinea pig ileum. Trimebutine (10-100 microM) concentration-dependently inhibited tension development brought about by Ca2+ release from intracellular stores induced by CCh (10 microM), but did not affect those induced by inositol 1,4,5-trisphosphate (IP3, 25 microM) or caffeine (5 mM). The inhibitory effect was reversible. Trimebutine (100 microM) neither altered the Ca2+ sensitivity of the contractile elements nor affected the effects of GTP gamma S (50 microM) and CCh (100 microM) in potentiating Ca2+ sensitivity of the contractile elements after the Ca2+ storage function had been eliminated by A23187. These results suggest that trimebutine inhibits CCh-induced Ca2+ release by acting at some point during the coupling of muscarinic receptors through a G-protein to phospholipase C and thus reducing the accumulation of IP3.
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Affiliation(s)
- M Nagasaki
- Pharmacological Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan
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214
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Hironaka T, Nagasaki M, Morikawa S, Hirai K. Detection of Epstein-Barr virus transcripts in chemically or immunologically-activated cells and in a null cell-line (HLN-STL-C) by in situ hybridization with alkaline phosphatase-linked oligonucleotide probes. J Virol Methods 1993; 44:141-54. [PMID: 8263111 DOI: 10.1016/0166-0934(93)90050-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [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: 01/29/2023]
Abstract
We report a simple procedure for the detection of Epstein-Barr virus (EBV) by in situ DNA-RNA hybridization with an alkaline phosphatase-linked oligonucleotide probe. EBV-producing cell lines P3HR-1 and Akata were treated with phorbol ester and n-butyrate, and anti-human IgG, respectively. This treatment resulted in highly increased populations of cells with EBV transcripts of the latent membrane protein 1 (LMP1) and envelop glycoprotein gp350/220, but not of EBV-encoded small nuclear RNAs (EBERs). Synthesis of the LMP1 protein, which was encoded by the induced mRNA, was mostly dependent on viral DNA synthesis, as shown by double or single labeling for in situ DNA-DNA hybridization with the oligo-nucleotide probe, and immunoperoxidase staining with a monoclonal antibody against LMP1. In situ hybridization of the null cell line HLN-STL-C established from an adult T-cell leukemia patient showed that 100% of the cells contained both EBERs and LMP1 mRNA and about 0.1% of the cells contained gp350/220 mRNA, indicating that a few of the null cells which carried the EBV genome spontaneously entered the late EBV replication cycle.
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MESH Headings
- Animals
- Antigens, Viral/genetics
- B-Lymphocytes/microbiology
- Base Sequence
- Butyrates/pharmacology
- Capsid Proteins
- Cell Line, Transformed
- Fluorescent Antibody Technique
- Gene Expression Regulation, Viral/drug effects
- Herpesvirus 4, Human/genetics
- Herpesvirus 4, Human/immunology
- Herpesvirus 4, Human/physiology
- Humans
- Immunoenzyme Techniques
- In Situ Hybridization
- Lymphocytes, Null/microbiology
- Molecular Sequence Data
- Oligonucleotide Probes
- Oligonucleotides, Antisense
- RNA, Messenger/analysis
- RNA, Messenger/genetics
- RNA, Viral/analysis
- RNA, Viral/genetics
- Tetradecanoylphorbol Acetate/pharmacology
- Tumor Cells, Cultured
- Viral Matrix Proteins/genetics
- Virus Replication/drug effects
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Affiliation(s)
- T Hironaka
- Department of Cell Regulation, Tokyo Medical and Dental University, Japan
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215
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Abstract
1. The effect of trimebutine on the voltage-dependent inward Ca2+ current was investigated by the whole-cell voltage-clamp technique in single smooth muscle cells from rabbit ileum. 2. Trimebutine (3-100 microM) reduced the Ca2+ current in a concentration-dependent manner. The inhibitory effect on the Ca2+ current was also dependent on the holding potential. The Ca2+ current after a low holding potential was inhibited to a greater extent than that after a high membrane potential: the IC50 values were 7 microM and 36 microM at holding potentials of -40 mV and -60 mV, respectively. The Ca2+ current elicited from a holding potential of -80 mV could not be reduced by as much as 50% of the control by trimebutine at concentrations as high as 100 microM. 3. Trimebutine (30 microM) shifted the voltage-dependent inactivation curve for the Ca2+ current by 18 mV in the negative direction. The affinity of the drug for Ca2+ channels was calculated to be 36 times higher in the inactivated state than in the closed-available state. 4. Blockade of the Ca2+ current by trimebutine, unlike verapamil, was not use-dependent. 5. The results suggest that trimebutine inhibits the voltage-dependent inward Ca2+ current through a preferential binding to Ca2+ channels in the inactivated state in the smooth muscle cell from rabbit ileum. The inhibitory effect of trimebutine on gastrointestinal motility is discussed in the light of the present findings.
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Affiliation(s)
- M Nagasaki
- Department of Veterinary Science, Faculty of Agriculture, Gifu University, Japan
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216
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Abstract
The effect of trimebutine on the K+ current in rabbit ileal smooth muscle cells was investigated using the whole-cell patch-clamp technique. Trimebutine (10 microM) inhibited an outward current consisting of a Ca(2+)-dependent K+ current (IKCa) and Ca(2+)-independent K+ current (IKv), elicited by stepping from -80 to -20 mV or more positive. Trimebutine reduced dose dependently the IKv amplitude with an IC50 of 7.6 microM and IKCa amplitude with an IC50 of 23.5 microM. The IKv inhibition was neither voltage- nor use-dependent. Trimebutine (1-100 microM) decreased the amplitude and discharge rate of spontaneous transient outward currents. Trimebutine (30 microM) produced a sustained membrane depolarization of about 10 mV accompanied by a decrease in membrane conductance. The results suggest that the excitatory effects of trimebutine on the gastrointestinal tract may be attributable to the inhibitory action on the K+ current.
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Affiliation(s)
- M Nagasaki
- Department of Veterinary Science, Faculty of Agriculture, Gifu University, Japan
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217
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Abstract
The effects of trimebutine maleate on cytosolic free Ca2+ and force transitions in the guinea-pig taenia cecum were studied by fura-2 fluorometry and tension recording. The addition of 80 mM K+ induced a transient increase in cytosolic free Ca2+ concentration ([Ca2+]i) and tension, followed by a sustained increase. Trimebutine (10 microM) suppressed both [Ca2+]i elevation and tension development. The tonic responses were more potently inhibited than the phasic responses. Phasic components gradually increased as the added K+ increased (10-40 mM). The relationship between the peak increases in [Ca2+]i and tension was not affected by trimebutine (10 microM). This means that trimebutine does not affect the Ca2+ sensitivity of contractile elements. In a high K+ and Ca(2+)-free medium, carbachol (10 microM) or caffeine (30 mM) caused transient [Ca2+]i elevation and tension development in the smooth muscle. Trimebutine (10 microM) decreased the amplitude of both responses. Trimebutine (10 microM) inhibited the spontaneous fluctuations in [Ca2+]i and motility of taenia cecum in the presence of tetrodotoxin (TTX; 0.3 microM). These results suggest that trimebutine has two types of inhibitory actions on intestinal smooth muscle; one, the inhibition of Ca2+ influx through voltage-dependent calcium channels, and the other, the inhibition of Ca2+ release from intracellular storage sites.
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Affiliation(s)
- M Nagasaki
- Biological Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan
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218
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Morikawa S, Morikawa K, Hara J, Nagasaki M, Nakano A, Oseko F. Establishment of a novel cell line with T-lineage phenotype (HPB-MLp-W) from a non-Hodgkin's lymphoma patient. Leuk Res 1991; 15:381-9. [PMID: 2046390 DOI: 10.1016/0145-2126(91)90014-k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 12/30/2022]
Abstract
We report the characterization of a novel human T-cell line, HPB-MLp-W, which was established from blastic cells of a lymph node specimen from a patient with non-Hodgkin's lymphoma. They demonstrated the T-cell association antigens, CD2 and CD4, but no CD3, CD8, CD1, CD5, CD7 nor T-cell antigen receptor on their cell surfaces. They were also positive for Ia and Ki-1 antigen, and negative for CD25 (Tac-1). The cell line HPB-MLp-W had the same pattern of antigen expression as the patient's cells. Southern-blot analysis of DNA showed a rearrangement of the T-cell receptor-alpha and beta genes. To our knowledge, this is a novel cell line with unique T-lineage marker, to be established from a case of non-Hodgkin's lymphoma.
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Affiliation(s)
- S Morikawa
- Department of Pathology, Shimane Medical University, Izumo, Japan
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219
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Abstract
The effects of trimebutine maleate on [3H]nitrendipine binding to guinea-pig ileal smooth muscle membranes and Ca2(+)-induced contraction of the taenia cecum were studied. Specific binding of [3H]nitrendipine to smooth muscle membranes was saturable, with a KD value and maximum number of binding sites (Bmax) of 0.16 nM and 1070 fmol/mg protein, respectively. Trimebutine inhibited [3H]nitrendipine binding in a concentration-dependent manner with a Ki value of 9.3 microM. In the presence of trimebutine (10 microM), Scatchard analysis indicated a competitive-like inhibition with a decrease in the binding affinity (0.31 nM) without a change in Bmax (1059 fmol/mg protein). However, a dissociation experiment using trimebutine (10 or 100 microM) showed that the decreased affinity was due to an increase of the dissociation rate constant of [3H]nitrendipine binding to the membrane. In mechanical experiments using the taenia cecum, trimebutine (3-30 microM) caused a parallel rightward shift of the dose-response curve for the contractile response to a higher concentration range of Ca2+ under high-K+ conditions in a noncompetitive manner. These results suggest that trimebutine has negative allosteric interactions with 1,4-dihydropyridine binding sites on voltage-dependent Ca2+ channels and antagonizes Ca2+ influx, consequently inhibiting contractions of intestinal smooth muscle.
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Affiliation(s)
- M Nagasaki
- Biological Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan
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220
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Nagasaki M, Morikawa S, Harada T, Miyasaka N. Analysys of novel EBV-related nucleo-cytoplasmic antigen in a null-cell line and detection of reactive antibodies in Sjogren's syndrome patients. J Autoimmun 1989. [DOI: 10.1016/0896-8411(89)90209-6] [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: 10/26/2022]
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221
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Nagasaki M, Morikawa S, Harada T, Miyasaka N. A novel EBV-related nucleo-cytoplasmic antigen in a null cell-line (HLN-STL-C) reactive to antibodies in the sera from patients with Sjögren's syndrome. J Autoimmun 1989; 2:457-62. [PMID: 2551312 DOI: 10.1016/0896-8411(89)90175-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [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: 01/01/2023]
Abstract
We have established a non-T- and non-B-cell line, HLN-STL-C(STL-C), which harbors the EBV genome, from the lymph node cells of a Japanese ATL patient. This cell line expresses a unique Epstein-Barr virus (EBV)-related nucleo-cytoplasmic (N-C) antigen which is detected by indirect immunofluorescence (IF) with the sera from patients with nasopharyngeal cancer (NPC), infectious mononucleosis (IM) or adult T-cell leukemia (ATL). One of the molecular components of this antigen is proved to be STL-C specific 125 kD molecule by immunoblot analysis (IB). To study the involvement of EBV in Sjögren's syndrome (SS), we examined the reactivity of the N-C antigen with the sera of SS patients by IF and IB. Among 24 cases examined, the sera of 21 cases (87.5%) positively stained the N-C antigen by IF. The staining patterns were divided into two types. Type I, (seven cases) showed positive staining for only N-C antigen, and Type II, (14 cases) was positive for N-C antigen associated with diffuse nuclear staining due to antinuclear antibodies in the SS patient's sera. Only one out of 11 non-Sjögren's patients' sera, which were almost all healthy controls, was positive for N-C antigen in this study. By IB, however, only two out of 15 IF-positive SS patients' sera reacted with STL-C specific 125 kD molecule. These results suggested the presence of heterogenous components in the N-C antigen. Our findings may support the hypothetical conception that EBV plays an etiological role in SS.
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Affiliation(s)
- M Nagasaki
- Department of Pathology, Shimane Medical University, Izumo, Japan
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222
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Nagasaki M, Yamada K, Ikezawa K, Tamaki H. Contribution of peripheral opioid receptors to the trimebutine-induced contractions of the proximal colon in anesthetized rats. Nihon Heikatsukin Gakkai Zasshi 1989; 25:27-30. [PMID: 2560095 DOI: 10.1540/jsmr1965.25.27] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In this study we investigated the involvement of opioid receptors in the contractile response to trimebutine using with the proximal colon of anesthetized rats. Trimebutine (3 mg/kg i.v.) enhanced spontaneous contractions of the proximal colon in anesthetized rats. The contractile response was partially inhibited by intravenous administration of an opioid antagonist, naloxone at 1 approximately 30 micrograms/kg, but was hardly depressed by intracisternal administration of naloxone (30 micrograms/kg). Morphine (30 micrograms/kg i.v.) evoked colonic contractions which were abolished by intravenous naloxone (30 micrograms/kg). These results suggest that the colonic contractions evoked by trimebutine in anesthetized rats are, in part, mediated by peripheral opioid receptors.
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Affiliation(s)
- M Nagasaki
- Biological Research Laboratory, Tanabe Seiyaku Co., Ltd., Saitama, Japan
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223
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Abstract
An autopsy case of a 52-year-old Japanese male, who died of disseminated histoplasmosis, is reported. He had received a cadaveric renal allograft 4 years prior to death. The donor was a 33-year-old American negro male, who had resided in Texas. The patient had been treated with immunosuppressive drugs after renal transplantation, and mycotic pneumonia developed 3 months before death. At autopsy, acute necrotizing lesions composed of histiocytes were observed in the transplanted kidney, lungs, prostate gland and various lymph nodes. Abundant yeast-like fungal elements, measuring 2-5 micron in diameter, were engulfed by the histiocytes, and were identified as Histoplasma capsulatum by the immunoperoxidase method. The transplanted kidney was considered to have been the source of the infection.
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Affiliation(s)
- M Watanabe
- Department of Pathology, Shinshu University School of Medicine, Matsumoto, Japan
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224
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Ito M, Cui J, Hotchi M, Nagasaki M. [An autopsied case of a malignant lymphoma with a severe nephrotic syndrome overlapped by cirrhotic glomerulosclerosis]. Gan No Rinsho 1988; 34:938-45. [PMID: 3294470] [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
A 52-year-old man, who had been diagnosed as having alcoholic liver cirrhosis, presented a chronic nephritic syndrome due to hepatic glomerulosclerosis. Ten months before death, massive proteinuria exceeding 40 g/day was noted. A renal biopsy revealed diffuse mesangial sclerosis, associated with an IgA deposition consistent with hepatic glomerulosclerosis. Although the nephrotic syndrome subsided with immunosuppressive therapy, he died of hepatic failure. Postmortem examinations disclosed a diffuse, medium-size B-cell lymphoma, involving the peritoneal and retroperitoneal organs and an IgA-positive plasmacytosis. His massive proteinuria seems to have been caused by the paraneoplastic syndrome of a malignant lymphoma.
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Affiliation(s)
- M Ito
- Dept. of Pathology, Shinshu Univ. School of Med
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225
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Mori H, Hayashi K, Fukuda T, Matsunaga N, Futagawa S, Nagasaki M, Mutsukura M. Intrahepatic portosystemic venous shunt: occurrence in patients with and without liver cirrhosis. AJR Am J Roentgenol 1987; 149:711-4. [PMID: 3307352 DOI: 10.2214/ajr.149.4.711] [Citation(s) in RCA: 92] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Portosystemic venous shunt within the hepatic parenchyma is rare, and its cause is disputed. Only 12 cases have been reported in the literature. Four new patients are presented here, all of whom had cerebral manifestations due to elevated blood-ammonia levels. One patient, initially misdiagnosed as having a psychiatric disorder, had multiple small portohepatic venous shunts in the peripheral hepatic parenchyma that were believed to be congenital in origin. The other three patients with clinical evidence of cirrhosis and portal hypertension had large tubular shunts between the posterior branch of the portal vein and the inferior vena cava. Shunts of this type were considered to be the collateral pathways developed in the hepatic parenchyma as a result of portal hypertension. The diagnosis of intrahepatic portosystemic venous shunts was established by angiography in all four patients. Sonography and CT failed to show the multiple small shunts, but did provide diagnostic information concerning the large tubular shunts. Intrahepatic portosystemic venous shunt can be the cause of hepatic encephalopathy. One should be familiar with the typical radiographic manifestations of this condition to prevent misdiagnosis as a psychiatric or neurologic disorder.
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226
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Andoh S, Yano S, Itakura M, Kin S, Ono J, Nohara T, Tamura K, Nakase A, Nagasaki M, Harada T. [A case of middle bile duct cancer with wide lymphatic spread to distant multiple organs: a case difficult to diagnose the original lesion]. Nihon Shokakibyo Gakkai Zasshi 1987; 84:1850-4. [PMID: 3430816] [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: 01/05/2023]
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227
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Abstract
Although the pulmonary artery is involved in many cases of Takayasu arteritis, few cases have been reported in which the pulmonary artery was initially involved. Two such cases are reported here. Both of these cases had been initially diagnosed as chronic pulmonary embolism. The importance of considering Takayasu arteritis in cases of chronic pulmonary arterial obstruction of unknown cause is emphasized. Bronchial-pulmonary artery communication and coronary-bronchial artery communication in Takayasu arteritis are also discussed.
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228
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Matsunaga N, Amamoto Y, Hayashi K, Nagasaki M, Osajima M, Uchida N, Baba H, Morinaga T, Matsuo K, Fujii S. [A case of pulmonary actinomycosis]. Rinsho Hoshasen 1985; 30:501-4. [PMID: 4021146] [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: 01/08/2023]
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229
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Nagasaki M, Hayasi K, Kawano Y, Chang JS, Hombo Z, Nisino K, Toriya K, Toriyama K, Toda Y. [Metastatic pulmonary calcification--chest roentgenographic manifestations in 11 cases associated with hematologic disorder]. Nihon Igaku Hoshasen Gakkai Zasshi 1984; 44:1494-1500. [PMID: 6531203] [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: 05/21/2023]
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230
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Nagasaki M, Hayashi K, Kawano Y, Niino J, Chang JS, Hombo Z, Nishino K, Sekine I, Toriyama K. [Roentgenographic manifestations of opportunistic pulmonary aspergillosis. Investigation by inflated fixed lung specimen]. Nihon Igaku Hoshasen Gakkai Zasshi 1984; 44:1513-1519. [PMID: 6597917] [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: 05/21/2023]
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231
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Nagasaki M, Takewaki T, Ohashi H. Nerve pathways in the rectal region of the nerve of Remak of the chicken. Nihon Juigaku Zasshi 1983; 45:443-52. [PMID: 6314022 DOI: 10.1292/jvms1939.45.443] [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] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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232
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Nagasaki M. [Basic study on the dynamic changes in erythrocytes irradiated by a ruby-laser]. Shigaku 1982; 70:662-71. [PMID: 6964862] [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: 01/22/2023]
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233
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Hayashi K, Nagasaki M, Fukushima T, Aikawa H, Utsuki M, Hombo Z, Hirota M, Shigeno Y, Nakatomi M, Matsuo T, Tomonaga M, Fukui M. [Pulmonary cryptococcosis (author's transl)]. Rinsho Hoshasen 1982; 27:17-24. [PMID: 7077851] [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: 01/23/2023]
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234
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Hayashi K, Nagasaki M, Nakatomi M, Oda T, Sugihara H. [Miliary tuberculosis in recent years - studies of chest roentgenograms]. Rinsho Hoshasen 1981; 26:915-20. [PMID: 7311060] [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: 01/24/2023]
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235
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Uchio Y, Nagasaki M, Eguchi S, Matsuo A, Nakayama M, Hayashi S. Labdane diterpene glycosides with 6-deoxy-L-idose from Aster spathulifolius Maxim. Tetrahedron Lett 1980. [DOI: 10.1016/0040-4039(80)80175-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [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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236
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Ohno S, Nagasaki M, Furukawa K, Sahara T, Kiyosawa K, Furuta S, Oda M. [An autopsy case of IgD myeloma with special reference to electron microscopic observations of the liver and kidney (author's transl)]. Rinsho Ketsueki 1979; 20:754-61. [PMID: 502000] [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: 12/15/2022]
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237
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Ashizawa A, Nakashima A, Nagasaki M, Yamashita K. [A study of post-operative irradiation to breast cancer--especially electron beam treatment (author's transl)]. Rinsho Hoshasen 1979; 24:385-91. [PMID: 121142] [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: 12/13/2022]
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238
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Okubo T, Tsuchiya K, Nagasaki M, Nakajima T, Kamijyo H, Mizoguchi I. A further study of the biological effects of lead on urban and suburban Tokyo school children. Int Arch Occup Environ Health 1978; 41:17-23. [PMID: 627413 DOI: 10.1007/bf00377796] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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239
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Tsuchiya K, Okubo T, Nagasaki M, Nakajima T, Kamijo H. Biologic effects of lead on school children of urban and suburban Tokyo. Int Arch Occup Environ Health 1977; 38:247-57. [PMID: 838509 DOI: 10.1007/bf00378336] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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240
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Ichikawa A, Nagasaki M, Umezu N, Hayashi H, Tomita K. Effect of cyclic 3',5'-monophosphate on edema and granuloma induced by carrageenin. Biochem Pharmacol 1972; 21:2615-26. [PMID: 4350552 DOI: 10.1016/0006-2952(72)90229-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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241
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Nagasaki M. Epidemiological study of Clostridium perfringens (welchii) food poisoning--the carrier state and its variation in humans. Bull Tokyo Med Dent Univ 1967; 14:173-93. [PMID: 4295046] [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: 01/09/2023]
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242
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Zen-Yoji H, Sakai S, Terayama T, Kudo Y, Ito T, Benoki M, Nagasaki M. Epidemiology, enteropathogenicity, and classification of Vi.rio parahaemolyticus. J Infect Dis 1965; 115:436-44. [PMID: 5891781 DOI: 10.1093/infdis/115.5.436] [Citation(s) in RCA: 48] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
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