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Nakano T, Okano H, Takahashi M, Nagashima S, Shiraki K, Oya Y, Inoue H, Ohmori S, Tsukimoto M, Ishida S, Fujimoto S, Kobayashi M, Yamawaki M, Kumagai M, Ninomiya J, Maegawa T, Kojima Y, Araki J, Hamaoka S, Horiike S, Yoshimura H, Takeuchi K, Itoh K, Akachi S, Uraki S, Yamamoto N, Ogura S, Sugimoto K, Yoshikawa K, Hasegawa H, Iwasa M, Takei Y, Okamoto H. Changing clinical and molecular characteristics of hepatitis E virus infection in Mie Prefecture, Japan: Disappearance of indigenous subtype 3e strains. Hepatol Res 2019; 49:1003-1014. [PMID: 31026368 DOI: 10.1111/hepr.13357] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2019] [Revised: 04/09/2019] [Accepted: 04/19/2019] [Indexed: 02/08/2023]
Abstract
AIM To evaluate the clinical and molecular characteristics of hepatitis E virus (HEV) infection in Mie Prefecture, Japan, from 2004 through 2018. METHODS The clinical information of hepatitis E cases was collected from 21 medical institutions in Mie Prefecture. The nucleotide sequences of infecting HEV strains were determined for cases with available serum samples. The origins or transmission routes were inferred from phylogenetic analyses of the nucleotide sequences. RESULTS Fifty-three patients were diagnosed with HEV infection. The number of cases increased each year through 2012 and then decreased. Analyses of the clinical characteristics of the cases indicated that even mild cases were detected in the latter 10 years of the study. Nucleotide sequence analyses were undertaken on 38 of the 53 cases. The HEV subtype 3e (HEV-3e) strains identified for 13 cases were closely related to a swine HEV-3e strain that was isolated from the liver of a pig bred in Mie Prefecture. The number of cases infected with the indigenous Mie HEV-3e strains increased until 2012 but have not been reported since 2014. In the latter half of the study, cases involving various HEV strains of different genotypes and subtypes emerged. CONCLUSIONS The disappearance of indigenous Mie HEV-3e strains appeared to be the primary cause for the decrease in hepatitis E cases in Mie Prefecture. The disappearance might have been associated with improved hygienic conditions on pig farms or the closure of contaminated farms. The results suggest that indigenous HEV strains can be eradicated by appropriate management.
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Affiliation(s)
- Tatsunori Nakano
- Department of Internal Medicine, Fujita Health University Nanakuri Memorial Hospital, Mie, Japan
| | - Hiroshi Okano
- Department of Gastroenterology, Suzuka General Hospital, Mie, Japan
| | - Masaharu Takahashi
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Shigeo Nagashima
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
| | - Katsuya Shiraki
- Department of Gastroenterology, Mie Prefectural General Medical Center, Mie, Japan
| | - Yumi Oya
- Department of Gastroenterology, Mie Prefectural General Medical Center, Mie, Japan
| | - Hidekazu Inoue
- Department of Gastroenterology, Mie Prefectural General Medical Center, Mie, Japan
| | - Shigeru Ohmori
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Mone Tsukimoto
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Satoshi Ishida
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Shino Fujimoto
- Department of Gastroenterology, Kuwana City Medical Center, Mie, Japan
| | - Makoto Kobayashi
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Makoto Yamawaki
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Masanari Kumagai
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Jun Ninomiya
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Tadashi Maegawa
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Mie, Japan
| | - Yuji Kojima
- Department of Hepatology, Ise Red Cross Hospital, Mie, Japan
| | - Jun Araki
- Department of Hepatology, Ise Red Cross Hospital, Mie, Japan
| | - Shima Hamaoka
- Department of Hepatology, Ise Red Cross Hospital, Mie, Japan
| | - Shinichiro Horiike
- Department of Internal Medicine, Suzuka Kaisei Hospital, Suzuka, Mie, Japan
| | | | - Keisuke Takeuchi
- Department of Gastroenterology, Mie Chuo Medical Center, Mie, Japan
| | - Keiichi Itoh
- Department of Gastroenterology, Mie Prefectural Shima Hospital, Mie, Japan
| | - Shigehiro Akachi
- Mie Prefectural Institute of Public Health and Environmental Sciences, Mie, Japan
| | - Satoko Uraki
- Department of Internal Medicine, Sakakibara Onsen Hospital, Mie, Japan.,Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Norihiko Yamamoto
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan.,Department of Hepatology, Tohyama Hospital, Mie, Japan
| | - Suguru Ogura
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Kazushi Sugimoto
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Kyoko Yoshikawa
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Hiroshi Hasegawa
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Motoh Iwasa
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Yoshiyuki Takei
- Department of Gastroenterology and Hepatology, Mie University School of Medicine, Mie, Japan
| | - Hiroaki Okamoto
- Division of Virology, Department of Infection and Immunity, Jichi Medical University School of Medicine, Tochigi, Japan
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Ida S, Kojima Y, Hamaoka S, Urawa N, Araki J, Kaneko R, Murata K. Validity of Japanese version of SARC-F questionnaire in patients with chronic liver disease. J Gastroenterol Hepatol 2019; 34:947-953. [PMID: 30144377 DOI: 10.1111/jgh.14449] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 08/14/2018] [Accepted: 08/14/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIM We aimed to examine the validity of the Japanese version of SARC-F questionnaire (SARC-F-J) that employs the diagnostic criteria for sarcopenia established by the Japan Society of Hepatology in patients with chronic liver disease. METHODS Subjects were outpatients at the Department of Hepatology at the Japanese Red Cross Ise Hospital, Japan. Evaluations were performed using the following self-administered questionnaires: SARC-F-J, Tokyo Metropolitan Institute of Gerontology Index of Competence (TMIG-IC), the Japanese version of the Falls Efficacy Scale (FES), and Kaigo-Yobo Checklist (CL). Based on the diagnostic criteria of the Japan Society of Hepatology, we diagnosed sarcopenia from the skeletal muscle index calculated using the iliopsoas muscle area at the third lumbar vertebra on computed tomography and from grip strength. To evaluate construct validity, we calculated the sensitivity, specificity, and positive and negative predictive values of SARC-F-J that used the diagnostic criteria of the Japan Society of Hepatology as reference. Furthermore, to evaluate convergent validity, we calculated Pearson's correlation coefficients between SARC-F-J and TMIG-IC, FES, and CL. RESULTS A total of 140 subjects were included in the analysis set. Sensitivity and specificity were 16.3% and 45.0% and 95.3% and 90.8% for men and women, respectively. The positive predictive value was 81.8% for both, whereas the negative predictive value was 47.1% and 64.5% for men and women, respectively. A significant correlation was seen between SARC-F-J and TMIG-IC, FES, and CL. CONCLUSIONS We believe that the SARC-F-J is a valid tool for patients with chronic liver disease.
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Affiliation(s)
- Satoshi Ida
- Department of Diabetes and Metabolism, Ise Red Cross Hospital, Ise-shi, Mie, Japan
| | - Yuji Kojima
- Department of Gastroenterology and Hepatology, Ise Red Cross Hospital, Ise-shi, Mie, Japan
| | - Shima Hamaoka
- Department of Gastroenterology and Hepatology, Ise Red Cross Hospital, Ise-shi, Mie, Japan
| | - Naohito Urawa
- Department of Gastroenterology and Hepatology, Ise Red Cross Hospital, Ise-shi, Mie, Japan
| | - Jun Araki
- Department of Gastroenterology and Hepatology, Ise Red Cross Hospital, Ise-shi, Mie, Japan
| | - Ryutaro Kaneko
- Department of Diabetes and Metabolism, Ise Red Cross Hospital, Ise-shi, Mie, Japan
| | - Kazuya Murata
- Department of Diabetes and Metabolism, Ise Red Cross Hospital, Ise-shi, Mie, Japan
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Hayashi H, Yano M, Urawa N, Mizutani A, Hamaoka S, Araki J, Kojima Y, Naito Y, Kato A, Tatsumi Y, Kato K. A 10-year Follow-up Study of a Japanese Family with Ferroportin Disease A: Mild Iron Overload with Mild Hyperferritinemia Co-occurring with Hyperhepcidinemia May Be Benign. Intern Med 2018; 57:2865-2871. [PMID: 29780118 PMCID: PMC6207810 DOI: 10.2169/internalmedicine.0481-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
This is a 10-year follow-up study of a family with ferroportin disease A. The proband, a 59-year-old man showed no noteworthy findings with the exception of an abnormal iron level. The proband's 90-year-old father showed reduced abilities in gait and cognition; however, with the exception of his iron level, his biochemistry results were almost normal. Brain imaging showed age-matched atrophy and iron deposition. In both patients, the serum levels of ferritin and hepcidin25, and liver computed tomography scores declined over a 10-year period. These changes were mainly due to a habitual change to a low-iron diet. The iron disorder in this family was not associated with major organ damage.
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Affiliation(s)
- Hisao Hayashi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
| | - Motoyoshi Yano
- Department of Gastroenterology, Yokkaichi Municipal Hospital, Japan
| | - Naohito Urawa
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | | | - Shima Hamaoka
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | - Jun Araki
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | - Yuji Kojima
- Department of Hepatology, Ise Red Cross Hospital, Japan
| | - Yutaka Naito
- Department of Neurology, Ise Red Cross Hospital, Japan
| | - Ayako Kato
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
| | - Yasuaki Tatsumi
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
| | - Koichi Kato
- Department of Medicine, Aichi-Gakuin University School of Pharmacy, Japan
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Yamasaki M, Shimada T, Hamaoka S, Shibata M, Naito Y. [A case of adult-onset type II citrullinemia (CTLN2) triggered by an overseas travel]. Rinsho Shinkeigaku 2014; 54:747-50. [PMID: 25283831 DOI: 10.5692/clinicalneurol.54.747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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
A 43-year-old male presented with abnormal behavior and consciousness disturbance on the day after traveling abroad and was admitted to our hospital. Laboratory tests showed hyperammonemia and hypercitrullinemia. The electro-encephalogram showed frontal dominant bilateral slow δ burst. He had a peculiar taste for nuts. But he didn't take nuts during the overseas travel for 3 days. The family history revealed that his younger brother died of a status epilepticus of unknown cause at the age of 29. These findings were compatible with hepatic encephalopathy due to adult-onset type II citrullinemia (CTLN2). Gene analysis provided a definite diagnosis of CTLN2. Diet and drug therapy have improved his condition. He is due to have liver transplantation which is the only established radical treatment for CTLN2 if his condition becomes worse. The present case shows that cessation of the habitual intake of nuts only for 3 days could lead to onset of CTLN2.
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Sato T, Suemaru K, Matsunaga K, Hamaoka S, Gomita Y, Oishi R. Potentiation of L-dopa-induced behavioral excitement by histamine H1-receptor antagonists in mice. Jpn J Pharmacol 1996; 71:81-4. [PMID: 8791174 DOI: 10.1254/jjp.71.81] [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] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Effects of histamine H1-receptor antagonists on L-dopa-induced behavioral excitement were examined in mice to confirm behaviorally the inhibition of dopamine uptake by these compounds. L-Dopa (100-300 mg/kg, s.c.) combined with pargyline hydrochloride (80 mg/kg, i.p.) caused a dose-dependent behavioral excitement. The marked excitement induced by L-dopa (300 mg/kg) plus pargyline was significantly inhibited by pimozide (0.1 - 1 mg/kg, s.c.), a selective dopamine antagonist. Tripelennamine (10 mg/kg, s.c.), d-chlorpheniramine (1 and 2 mg/kg, s.c.), homochlorcyclizine (2 and 5 mg/kg, s.c.), diphenhydramine (2 and 5 mg/kg, s.c.) and mepyramine (2 and 5 mg/kg, s.c.) each markedly enhanced the moderate behavioral excitement induced by L-dopa (150 mg/kg) plus pargyline. These findings are behavioral evidence for inhibition of dopamine uptake by H1 antagonists, which has been suggested by neurochemical studies.
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Affiliation(s)
- T Sato
- Department of Hospital Pharmacy, Faculty of Medicine, Kyushu University, Fukuoka, Japan
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Takano H, Ozawa H, Kobayashi I, Hamaoka S, Nakajima J, Nakamura T, Sato K, Kimura H, Naito A, Obata S, Koizumi K, Tamura K. Myocardial sympathetic dysinnervation in doxorubicin cardiomyopathy. J Cardiol 1996; 27:49-55. [PMID: 8919183] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Single photon emission computed tomography (SPECT) using I-123 metaiodobenzylguanidine (MIBG) was evaluated for the detection of doxorubicin (DXR) cardiomyopathy in seven patients with malignant lymphoma receiving DXR doses ranging from 70 to 530 mg (DXR group), and 20 normal subjects without hypertension, diabetes mellitus or electrocardiographic abnormalities (control group). The ratio of the heart to mediastinal counts (H/M) and the washout rate (WR) in MIBG SPECT images were compared between the two groups. Correlation of total doses of DXR with H/M and the relationship of H/M to WR were investigated. The H/M of the DXR group was lower than that of the control group (3.00 +/- 0.97 vs 4.90 +/- 1.08, p < 0.001). The WR of the DXR group was higher than that of the control group (30.9 +/- 10.5% vs 16.5 +/- 9.1%, p < 0.001). Total DXR doses were inversely correlated with H/M (r = -0.86), H/M correlated inversely with the WR (r = -0.83) only in the DXR group. Pathological findings of one patient, who died of DXR cardiomyopathy, showed atrophic and fibrotic nerve fibers in the apical inferior segment of the left ventricle where MIBG uptake was reduced markedly. DXR cardiomyopathy can be detected with MIBG SPECT as cardiac sympathetic nervous dysinnervation. The pathological findings correspond to the MIBG SPECT findings.
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Affiliation(s)
- H Takano
- The Second Department of Internal Medicine, Yamanashi Medical College
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Takano H, Ozawa H, Kobayashi I, Hamaoka S, Nakajima A, Nakamura T, Naitoh A, Koizumi K, Tamura K. Atrophic nerve fibers in regions of reduced MIBG uptake in doxorubicin cardiomyopathy. J Nucl Med 1995; 36:2060-1. [PMID: 7472599] [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: 01/25/2023] Open
Abstract
A myocardial MIBG-SPECT examination was conducted 2 wk after doxorubicin chemotherapy on a 52-yr-old woman without cardiac symptoms. Despite normal 201TI scintigraphy, reduced MIBG uptake was detected in the apical anterior, inferior and lateral segments of the left ventricle. The patient died of congestive heart failure due to doxorubicin-induced cardiomyopathy 10 mo later. At necropsy, the left ventricle was markedly dilated and the apical anterior, inferior and lateral walls were thin, stiff and whitish. Nerve fibers in the apical inferior wall were atrophic and markedly fibrotic where MIBG uptake was most reduced. Nerve fibers in the septum were normal where MIBG uptake had remained normal. The histologic findings correspond with the findings on the MIBG image. MIBG imaging may detect cardiac sympathetic denervation in doxorubicin-induced cardiomyopathy before cardiac symptoms are manifest and cardiac function deteriorates.
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Affiliation(s)
- H Takano
- Second Department of Internal Medicine, Yamanashi Medical University, Japan
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Horikoshi T, Fukuzawa K, Hanada N, Ezoe K, Eguchi H, Hamaoka S, Tsujiya H, Tsukamoto T. In vitro comparative study of the antitumor effects of human interferon-alpha, beta and gamma on the growth and invasive potential of human melanoma cells. J Dermatol 1995; 22:631-6. [PMID: 8537547 DOI: 10.1111/j.1346-8138.1995.tb03889.x] [Citation(s) in RCA: 30] [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: 01/31/2023]
Abstract
We have studied the effects of interferon (IFN)-alpha, beta, and gamma in vitro on the growth and invasive potential of human melanoma SK-MEL-118 cells. The antiproliferative effects of IFNs were assessed by a quantitative regrowth assay in which cells were treated with IFNs at concentrations of 10(2), 10(3) or 10(4) IU/ml for 3 days (until day 4) and then further incubated without IFNs for 7 days (until day 11). The growth inhibitory effect of each IFN on melanoma cells was dose- and time-dependent. Among these three types of IFNs, however, IFN-beta exerted the strongest inhibitory effect on cell growth. To assess the anti-invasive effect of each IFN on melanoma cells, we employed an in vitro assay system using matrigel-coated Transwell chambers. When cells were treated with 10(2), 10(3), or 10(4) IU/ml of the three types of IFNs for 24 hours, the amount of tritiated thymidine incorporated into melanoma cells were treated for 24 hours with 10(4) IU/ml of IFN-beta or gamma prior to the assay, the number of cells that invaded the filter decreased by 40%; this decrease was only 10% with the same amount of IFN-alpha. Simultaneous addition of IFNs during the invasion assay was not effective in any combination. Only when the cells were pretreated with IFNs, antiinvasive effects against melanoma cells were exerted. IFN-alpha was less inhibitory than IFN-beta or gamma on proliferation and not at all inhibitory on invasion. Considering both the antiproliferative and antiinvasive effects of IFNs, our results suggest that IFN-beta has the strongest antitumoral effect on human melanoma cells.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T Horikoshi
- Department of Dermatology and Urology, School of Medicine, Sapporo Medical University, Japan
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Horikoshi T, Ezoe K, Nakagawa H, Eguchi H, Hanada N, Hamaoka S. 162 Upregulation of ICAM-1 expression on human dermal fibroblasts BY IFN-β in the presence of TNF-α. J Dermatol Sci 1995. [DOI: 10.1016/0923-1811(95)93876-3] [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: 11/15/2022]
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Horikoshi T, Ezoe K, Nakagawa H, Eguchi H, Hanada N, Hamaoka S. Up-regulation of ICAM-1 expression on human dermal fibroblasts by IFN-beta in the presence of TNF-alpha. FEBS Lett 1995; 363:141-4. [PMID: 7729535 DOI: 10.1016/0014-5793(95)00299-o] [Citation(s) in RCA: 6] [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: 01/26/2023]
Abstract
Unstimulated human fibroblasts show low or undetectable ICAM-1 expression. Interferon-beta (IFN-beta) at concentrations of 10, 100, and 1000 IU/ml in the presence of tumor necrosis factor-alpha (TNF-alpha) significantly increased the ICAM-1 expression of fibroblasts in a dose-dependent manner. Treatment with IFN-beta alone, however, did not up-regulate the ICAM-1 expression. Furthermore the attachment of peripheral blood mononuclear cells (PBMCs) to cytokine-treated fibroblasts was increased. This augmented attachment was partly inhibited by anti-ICAM-1 antibody. These results suggest that IFN-beta and TNF-alpha may cooperatively modulate the attachment of PBMCs in the dermis.
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Affiliation(s)
- T Horikoshi
- Department of Dermatology, School of Medicine, Sapporo Medical University, Japan
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Kobayashi I, Hamaoka S, Ozawa H, Ihno M, Tamura K, Tanaka Y, Sakamoto Y, Nakamura A, Ueno A. Hypercoagulable state induced by thrombocytapheresis. J Clin Apher 1993; 8:147-52. [PMID: 8300551 DOI: 10.1002/jca.2920080303] [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
The influence of the continuous-flow automated blood cell separator. Fenwal CS-3000, on blood coagulation and the fibrinolytic system in blood donors was studied. Blood samples were taken from the collection line of donors undergoing extracorporeal circulation, before and after platelet pheresis. Of the molecular markers, prothrombin fragment-F1 + 2 (PF1 + 2) markedly increased from 0.8 +/- 0.3 to 2.9 +/- 2.0 nM/ml (P < .004), thrombin antithrombin III complex (TAT) also markedly increased from 2.6 +/- 1.3 to 56.0 +/- 24.0 micrograms/L (P < .001), fibrinopeptide A (FPA) increased slightly from 0.8 +/- 0.9 to 3.8 +/- 4.2 micrograms/L (P < .05), and alpha 2-plasmin inhibitor (alpha 2-PI) decreased slightly from 95 +/- 8 to 91 +/- 9% (P < .05). In one donor with the highest level of PF1 + 2, TAT, FPA, and plasmin inhibitor complex after platelet pheresis, protein C, protein S, C4b-binding protein, ATIII, plasminogen, alpha 2-PI, and coagulation factors were decreased. In blood donors undergoing platelet pheresis using the continuous-flow automated blood cell separator, Fenwal CS-3000, a hypercoagulable state was observed. Changing the materials of the plastic disposables to a more thromboresistant material may prevent the hypercoagulable state in donors induced by platelet pheresis using the blood cell separator.
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Affiliation(s)
- I Kobayashi
- Second Department of Internal Medicine, Yamanashi Medical College, Japan
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Kobayashi I, Hamaoka S. [Acquired protein C or S deficiency--its relationship with physiopathology]. Rinsho Ketsueki 1992; 33:756-62. [PMID: 1433914] [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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13
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Suzuki K, Ishii H, Horie S, Kazama M, Yamamoto K, Matsushita T, Kobayashi I, Hamaoka S, Maruyama Y, Soezima Y. [Proteins C,S and C4bp--their structures and functions]. Rinsho Ketsueki 1992; 33:741-4. [PMID: 1433912] [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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Kobayashi I, Kurihara A, Hamaoka S, Amemiya N, Endo T, Okuyama K. [Changes in coagulation inhibitors (AT III, protein C, protein S) in patients with liver cirrhosis]. Rinsho Byori 1989; Spec No 81:93-7. [PMID: 2526888] [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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Nishi M, Akatsuka T, Inoue Y, Kamasaki H, Kamibayashi Y, Nakamachi S, Hamaoka S, Hayashi E, Miyake H, Takasugi N. Mothers' attitudes towards children's three-year health examination. Acta Paediatr Jpn 1988; 30:680-5. [PMID: 3149128 DOI: 10.1111/j.1442-200x.1988.tb02553.x] [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] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Kobayashi I, Amemiya N, Endo T, Motegi J, Kurihara A, Hamaoka S, Tamura K, Kume S. Amidolytic kinetic assay of protein C by selective spectrophotometry in a centrifugal analyzer. Clin Chem 1988; 34:2260-3. [PMID: 3180421] [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: 01/04/2023]
Abstract
This rapid, simple amidolytic assay of protein C activity in whole plasma involves activation by protein C activator from the venom of Agkistrodon contortrix contortrix (Protac) and use of a Cobas Fara spectrophotometer programmed for kinetic assay. Plasma is incubated with activator venom in the presence or absence of antibody to human protein C in the instrument, chromogenic substrate (S-2366) is added, and the absorbance is measured at 405 nm. The difference between the absorbance of the sample plasma with and without antibody to human protein C correlated well with protein C antigen as assayed by enzyme-linked immunosorbent assay (ELISA) and the Laurell rocket technique in normal subjects, patients being treated with warfarin, and patients with liver cirrhosis or disseminated intravascular coagulation. Our mean value for protein C in normal subjects is 115.9 (SD 16.7)% for amidolytic activity, 103.0 (SD 17.4)% for ELISA, and 97.2 (SD 18.1)% for the rocket technique. The high value for normal subjects presumably includes some nonspecific amidolytic activity activated by the activator venom, as indicated by measurable activity in immuno-depleted protein C-deficient plasma. Within-run and between-run CVs were less than 5% at low, normal, and high concentrations of protein C amidolytic activity.
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Affiliation(s)
- I Kobayashi
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
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Kobayashi I, Amemiya N, Endo T, Motegi J, Kurihara A, Hamaoka S, Tamura K, Kume S. Amidolytic kinetic assay of protein C by selective spectrophotometry in a centrifugal analyzer. Clin Chem 1988. [DOI: 10.1093/clinchem/34.11.2260] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Abstract
This rapid, simple amidolytic assay of protein C activity in whole plasma involves activation by protein C activator from the venom of Agkistrodon contortrix contortrix (Protac) and use of a Cobas Fara spectrophotometer programmed for kinetic assay. Plasma is incubated with activator venom in the presence or absence of antibody to human protein C in the instrument, chromogenic substrate (S-2366) is added, and the absorbance is measured at 405 nm. The difference between the absorbance of the sample plasma with and without antibody to human protein C correlated well with protein C antigen as assayed by enzyme-linked immunosorbent assay (ELISA) and the Laurell rocket technique in normal subjects, patients being treated with warfarin, and patients with liver cirrhosis or disseminated intravascular coagulation. Our mean value for protein C in normal subjects is 115.9 (SD 16.7)% for amidolytic activity, 103.0 (SD 17.4)% for ELISA, and 97.2 (SD 18.1)% for the rocket technique. The high value for normal subjects presumably includes some nonspecific amidolytic activity activated by the activator venom, as indicated by measurable activity in immuno-depleted protein C-deficient plasma. Within-run and between-run CVs were less than 5% at low, normal, and high concentrations of protein C amidolytic activity.
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Affiliation(s)
- I Kobayashi
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
| | - N Amemiya
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
| | - T Endo
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
| | - J Motegi
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
| | - A Kurihara
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
| | - S Hamaoka
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
| | - K Tamura
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
| | - S Kume
- 2nd Department of Internal Medicine, Yamanashi Medical College, Japan
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