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Meng S, Hara T, Sato H, Tatekawa S, Tsuji Y, Saito Y, Hamano Y, Arao Y, Gotoh N, Ogawa K, Ishii H. Revealing neuropilin expression patterns in pancreatic cancer: From single‑cell to therapeutic opportunities (Review). Oncol Lett 2024; 27:113. [PMID: 38304169 PMCID: PMC10831399 DOI: 10.3892/ol.2024.14247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Accepted: 10/13/2023] [Indexed: 02/03/2024] Open
Abstract
Pancreatic cancer, one of the most fatal types of human cancers, includes several non-epithelial and stromal components, such as activated fibroblasts, vascular cells, neural cells and immune cells, that are involved in different cancers. Vascular endothelial cell growth factor 165 receptors 1 [neuropilin-1 (NRP-1)] and 2 (NRP-2) play a role in the biological behaviors of pancreatic cancer and may appear as potential therapeutic targets. The NRP family of proteins serve as co-receptors for vascular endothelial growth factor, transforming growth factor β, hepatocyte growth factor, fibroblast growth factor, semaphorin 3, epidermal growth factor, insulin-like growth factor and platelet-derived growth factor. Investigations of mechanisms that involve the NRP family of proteins may help develop novel approaches for overcoming therapy resistance in pancreatic cancer. The present review aimed to provide an in-depth exploration of the multifaceted roles of the NRP family of proteins in pancreatic cancer, including recent findings from single-cell analysis conducted within the context of pancreatic adenocarcinoma, which revealed the intricate involvement of NRP proteins at the cellular level. Through these efforts, the present study endeavored to further reveal their relationships with different biological processes and their potential as therapeutic targets in various treatment modalities, offering novel perspectives and directions for the treatment of pancreatic cancer.
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Affiliation(s)
- Sikun Meng
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Tomoaki Hara
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Hiromichi Sato
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
- Department of Gastroenterological Surgery, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Shotaro Tatekawa
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yoshiko Tsuji
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yoshiko Saito
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yumiko Hamano
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Yasuko Arao
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Noriko Gotoh
- Division of Cancer Cell Biology, Cancer Research Institute of Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Kazuhiko Ogawa
- Department of Radiation Oncology, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
| | - Hideshi Ishii
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Osaka 565-0871, Japan
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Sato H, Hara T, Otsuka C, Arao Y, Tsuji Y, Hamano Y, Ogita M, di Luccio E, Hirotsu T, Vecchione A, Ishii H. m6 RNA methylation: an emerging common target in the immune response to cancer and severe acute respiratory syndrome-coronavirus-2 infection. Exploration of Medicine 2023. [DOI: 10.37349/emed.2023.00127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
m6A RNA methylation, a predominant type of RNA modification, is involved in regulating mRNA splicing, stability, and translation as well as the interaction between nucleoproteins and noncoding RNAs. Recent studies have revealed that m6A RNA methylation plays a critical role in the self-to-non-self-recognition of immune cells against endogenous mutations in cancer and exogenous organism-related infections. As an epigenetic mechanism, m6A RNA modification induces immune cell signal transduction, which is altered in the tumor microenvironment, as detected in liquid biopsy. Furthermore, m6A RNA methylation-related inflammation is involved in the cellular response to viral infections, including the emerging severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) infection. Given the importance of the immune response in maintaining homeostasis in higher eukaryotes, m6A RNA methylation could be useful not only for the early detection of cancer but also for SARS-CoV-2 screening during a global pandemic.
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Affiliation(s)
- Hiromichi Sato
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan; Department of Gastrointestinal Surgery, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Tomoaki Hara
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Chihiro Otsuka
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Yasuko Arao
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Yoshiko Tsuji
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Yumiko Hamano
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Mirei Ogita
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Eric di Luccio
- Hirotsu Bio Science Inc., Chiyoda-Ku, Tokyo 102-0094, Japan
| | | | - Andrea Vecchione
- Department of Clinical and Molecular Medicine, Sapienza University of Rome, Santo Andrea Hospital, Via di Grottarossa, 1035-00189 Rome, Italy
| | - Hideshi Ishii
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
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Hosaka T, Furuno S, Terada M, Hamano Y, Komatsu K, Okubo K, Koyama Y, Suzuki T, Tsuji H, Tamaoka A, Mizutani T. Tracheoarterial fistula in a patient with amyotrophic lateral sclerosis successfully managed by overinflation of the tracheostomy tube cuff alone: a case report. J Med Case Rep 2023; 17:65. [PMID: 36829250 PMCID: PMC9960659 DOI: 10.1186/s13256-023-03799-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 01/31/2023] [Indexed: 02/26/2023] Open
Abstract
BACKGROUND Tracheoarterial fistula is the most devastating complication after tracheostomy, and its mortality, without definitive treatment, approaches 100%. In general, the combination of bedside emergency management, that is, overinflation of the tracheostomy tube cuff, and definitive treatment such as surgical or endovascular intervention is necessary to prevent the poor outcome. Patients with neuromuscular diseases such as amyotrophic lateral sclerosis are susceptible to tracheoarterial fistula because of long-term mechanical ventilation and muscle weakness. CASE PRESENTATION We describe a case of tracheoarterial fistula in a Japanese 39-year-old patient with amyotrophic lateral sclerosis with long-term ventilator management. The patient was clinically diagnosed with a tracheoarterial fistula because of massive bleeding following sentinel hemorrhage. The massive hemorrhage was controlled by overinflation of the tracheostomy tube cuff alone, without definitive treatment. CONCLUSIONS This case suggests overinflation of the tracheostomy tube cuff alone plays an important role, semi-permanently, in the management of tracheoarterial fistula, especially in cases where surgical or endovascular intervention is not indicated. Clinicians taking care of patients with tracheostomy undergoing long-term mechanical ventilation should be aware that tracheoarterial fistula might occur following tracheostomy.
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Affiliation(s)
- Takashi Hosaka
- Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan. .,Department of Internal Medicine, Ibaraki Western Medical Center, University of Tsukuba Hospital/Jichi Medical University Joint Ibaraki Western Regional Clinical Education Center, Chikusei, Ibaraki, 308-0813, Japan. .,Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki, 308-0813, Japan.
| | - Shintaro Furuno
- Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Makoto Terada
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan ,grid.20515.330000 0001 2369 4728Department of Internal Medicine, Ibaraki Western Medical Center, University of Tsukuba Hospital/Jichi Medical University Joint Ibaraki Western Regional Clinical Education Center, Chikusei, Ibaraki 308-0813 Japan ,Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Yumiko Hamano
- Department of Otolaryngology, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Kenichi Komatsu
- Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Katsuichiro Okubo
- Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Yasuaki Koyama
- grid.412814.a0000 0004 0619 0044Department of Emergency and Critical Care Medicine, University of Tsukuba Hospital, Ibaraki, 305-8576 Japan ,grid.414178.f0000 0004 1776 0989Department of Emergency and Critical Care Medicine, Hitachi General Hospital, Hitachi, Ibaraki 317-0077 Japan
| | - Tetsu Suzuki
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Hiroshi Tsuji
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Akira Tamaoka
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Taro Mizutani
- Department of Anesthesiology, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
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Sato H, Sasaki K, Hara T, Tsuji Y, Arao Y, Otsuka C, Hamano Y, Ogita M, Kobayashi S, di Luccio E, Hirotsu T, Doki Y, Eguchi H, Satoh T, Uchida S, Ishii H. Pancreatic Cancer Research beyond DNA Mutations. Biomolecules 2022; 12:biom12101503. [PMID: 36291712 PMCID: PMC9599774 DOI: 10.3390/biom12101503] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Revised: 10/05/2022] [Accepted: 10/11/2022] [Indexed: 12/04/2022] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is caused by genetic mutations in four genes: KRAS proto-oncogene and GTPase (KRAS), tumor protein P53 (TP53), cyclin-dependent kinase inhibitor 2A (CDKN2A), and mothers against decapentaplegic homolog 4 (SMAD4), also called the big 4. The changes in tumors are very complex, making their characterization in the early stages challenging. Therefore, the development of innovative therapeutic approaches is desirable. The key to overcoming PDAC is diagnosing it in the early stages. Therefore, recent studies have investigated the multifaced characteristics of PDAC, which includes cancer cell metabolism, mesenchymal cells including cancer-associated fibroblasts and immune cells, and metagenomics, which extend to characterize various biomolecules including RNAs and volatile organic compounds. Various alterations in the KRAS-dependent as well as KRAS-independent pathways are involved in the refractoriness of PDAC. The optimal combination of these new technologies is expected to help treat intractable pancreatic cancer.
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Affiliation(s)
- Hiromichi Sato
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
- Department of Gastrointestinal Surgery, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Kazuki Sasaki
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
- Department of Gastrointestinal Surgery, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Tomoaki Hara
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Yoshiko Tsuji
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Yasuko Arao
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Chihiro Otsuka
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Yumiko Hamano
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Mirei Ogita
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Shogo Kobayashi
- Department of Gastrointestinal Surgery, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Eric di Luccio
- Hirotsu Bio Science Inc., Chiyoda-Ku, Tokyo 102-0094, Japan
| | | | - Yuichiro Doki
- Department of Gastrointestinal Surgery, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Hidetoshi Eguchi
- Department of Gastrointestinal Surgery, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Taroh Satoh
- Department of Gastrointestinal Surgery, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
| | - Shizuka Uchida
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, Frederikskaj 10B, 2. (Building C), 2450 Copenhagen SV, Denmark
- Correspondence: (S.U.); (H.I.); Tel.: +81-(0)6-6210-8406, 8405 (H.I.); Fax: +81-(0)6-6210-8407 (H.I.)
| | - Hideshi Ishii
- Department of Medical Data Science, Center of Medical Innovation and Translational Research, Osaka University Graduate School of Medicine, Suita, Yamadaoka 2-2, Osaka 565-0871, Japan
- Correspondence: (S.U.); (H.I.); Tel.: +81-(0)6-6210-8406, 8405 (H.I.); Fax: +81-(0)6-6210-8407 (H.I.)
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Kamoshida T, Ochi M, Ikegami T, Araki M, Yamaguchi Y, Hamano Y, Ohkawara H, Ohkawara A, Kakinoki N, Hirai S, Yanaka A. 1002P Usefulness of hand-foot skin reaction as a prognostic marker in patients with hepatocellular carcinoma treated with sorafenib: Close cooperation between pharmacists and oncologist changes prognosis. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1118] [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: 11/26/2022] Open
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Hamano Y, Kurimoto Y. Effects of acetylated wood powder on growth performance, hepatic and muscular free amino acid profiles, and inosine 5'-monophosphate concentration of breast meat in broiler chickens. Br Poult Sci 2016; 57:643-654. [PMID: 27185488 DOI: 10.1080/00071668.2016.1190809] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The present study was conducted to determine the effects of acetylated wood powder (AW) as a new feed additive on performance, liver and muscle metabolism of amino acids and fatty acids and nucleotide-related substances of meat in broiler chickens. It was hypothesised that acetic acid desorbed from AW during intestinal digestion affects tissue metabolism. Two-week-old broiler chicks were divided into four groups and fed on diets supplemented with wood powder (30 g/kg) less than 106 µm in diameter, except for controls. The AW was added to diets at 0, 10 and 30 g/kg to replace the non-acetylated wood powder (NAW) for 26 d. Plasma, liver tissue and breast muscle were taken from half of birds at 40 d of age under the fed condition. After the remaining chickens were fasted for 14 h, breast muscle was taken and refrigerated for 24 h. Consumption of wood powder with or without acetyl groups had no effect on growth performance including tissue weights of abdominal fat and breast muscle and plasma metabolites. Feeding AW decreased total free amino acid concentrations in the liver compared to the group only fed on the NAW. This response was dependent mainly on reduced non-essential and glucogenic amino acid concentrations. However, in breast muscle, alterations of free amino acid concentrations were observed only for histidine and tryptophan. In addition, the fatty acid composition of liver and breast muscle was not affected by feeding AW. In breast meat obtained from fasted chickens, the higher level of AW increased the concentration of inosine 5'-monophosphate, a taste-active compound, and in contrast, decreased the subsequent catabolites (inosine and hypoxanthine). However, the concentration of glutamic acid, a taste-active compound, was lowered at this level of AW ingestion. Therefore, this study suggested that feeding AW as a new feed additive regulates ante-mortem amino acid utilisation in the liver and contributes to retard post-mortem degradation of inosine 5'-monophosphate as a taste-active compound in chicken meat.
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Affiliation(s)
- Y Hamano
- a Laboratory of Animal Nutrition, Field Education and Science Center, Faculty of Bioresource Sciences , Akita Prefectural University , Ohgata , Akita , Japan
| | - Y Kurimoto
- b Institute of Wood Technology , Akita Prefectural University , Noshiro , Akita , Japan
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Hamano Y. Alteration of fatty acid profile and nucleotide-related substances in post-mortem breast meat of α-lipoic acid-fed broiler chickens. Br Poult Sci 2016; 57:501-14. [PMID: 27138100 DOI: 10.1080/00071668.2016.1184227] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The present study was conducted to determine the effects of α-lipoic acid supplementation on post-mortem changes in the fatty acid profile and concentrations of nucleotide-related substances, especially those of a taste-active compound, inosine 5'-monophosphate, in chicken meat. Mixed-sex broiler chicks aged 14 d were divided into three groups of 16 birds each and were fed on diets supplemented with α-lipoic acid at levels of 0, 100 or 200 mg/kg for 4 weeks. Blood and breast muscle samples were taken at 42 d of age under the fed condition and then after fasting for 18 h. The breast muscle obtained from fasted chickens was subsequently refrigerated at 2°C for one and 3 d. α-Lipoic acid supplementation did not affect any plasma metabolite concentration independently of feeding condition, while a slight increase in plasma glucose concentration was shown with both administration levels of α-lipoic acid. In early post-mortem breast muscle under the fed condition, α-lipoic acid had no effect on concentrations of fatty acids or nucleotides of ATP, ADP, and AMP. In post-mortem breast tissues obtained from fasted chickens, total fatty acid concentrations were markedly increased by α-lipoic acid feeding at 200 mg/kg irrespective of length of refrigeration. This effect was dependent on stearic acid, oleic acid, linoleic acid and linolenic acid. However, among fatty acids, the only predominantly increased unsaturated fatty acid was oleic acid. Dietary supplementation with α-lipoic acid at 200 mg/kg increased the inosine 5'-monophosphate concentration in breast meat and, in contrast, reduced the subsequent catabolites, inosine and xanthine, regardless of the length of refrigeration. Therefore, the present study suggests that α-lipoic acid administration altered the fatty acid profile and improved meat quality by increasing taste-active substances in the post-mortem meat obtained from fasted chickens.
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Affiliation(s)
- Y Hamano
- a Laboratory of Animal Nutrition, Field Education and Science Centre, Faculty of Bioresource Sciences , Akita Prefectural University , Akita , Japan
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Moriwaki T, Ishida H, Araki M, Endo S, Yoshida S, Kobayashi M, Hamano Y, Sugaya A, Shimoyamada M, Hasegawa N, Imanishi M, Ito Y, Sato D, Ishige K, Fukuda K, Abei M, Yamaguchi T, Hyodo I. A Phase I Study of Gemcitabine (Gem), Cisplatin (Cddp), and S-1 Combination in Untreated Patients (Pts) with Advanced Biliary Tract Cancer (Abtc). Ann Oncol 2014. [DOI: 10.1093/annonc/mdu334.110] [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: 11/12/2022] Open
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Hamano Y, Abe M, Matsuoka S, Zhang D, Kondo Y, Kagami Y, Ishigami A, Maruyama N, Tsuruta Y, Yumura W, Suzuki K. Susceptibility quantitative trait loci for pathogenic leucocytosis in SCG/Kj mice, a spontaneously occurring crescentic glomerulonephritis and vasculitis model. Clin Exp Immunol 2014; 177:353-65. [PMID: 24654803 DOI: 10.1111/cei.12333] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2014] [Indexed: 11/26/2022] Open
Abstract
The spontaneous crescentic glomerulonephritis-forming/Kinjoh (SCG/Kj) mouse, a model of human crescentic glomerulonephritis (CrGN) and systemic vasculitis, is characterized by the production of myeloperoxidase-specific anti-neutrophil cytoplasmic autoantibody (MPO-ANCA) and marked leucocytosis. This study was performed to identify the specific populations of leucocytes associated with CrGN and susceptibility loci for pathogenic leucocytosis. Four hundred and twenty female (C57BL/6 × SCG/Kj) F2 intercross mice were subjected to serial flow cytometry examination of the peripheral blood (PB). Kidney granulocytes and monocytes were examined histopathologically. Linkage analyses were performed with 109 polymorphic microsatellite markers. Correlation studies revealed that increase of the granulocytes, F4/80(+) cells, CD3(+) CD4(-) CD8(-) T cells and dendritic cells (DCs) in peripheral blood (PB) were associated significantly with glomerulonephritis, crescent formation and vasculitis. In kidney sections, F4/80(low) cells were observed in crescent, while F4/80(high) cells were around the Bowman's capsules and in the interstitium. Numbers of F4/80(+) cells in crescents correlated significantly with F4/80(+) cell numbers in PB, but not with numbers of F4/80(+) cells in the interstitium. Genome-wide quantitative trait locus (QTL) mapping revealed three SCG/Kj-derived non-Fas QTLs for leucocytosis, two on chromosome 1 and one on chromosome 17. QTLs on chromosome 1 affected DCs, granulocytes and F4/80(+) cells, but QTL on chromosome 17 affected DCs and granulocytes. We found CrGN-associated leucocytes and susceptibility QTLs with their positional candidate genes. F4/80(+) cells in crescents are considered as recruited inflammatory macrophages. The results provide information for leucocytes to be targeted and genetic elements in CrGN and vasculitis.
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Affiliation(s)
- Y Hamano
- Aging Regulation Section, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan; Department of Nephrology, Tokyo Metropolitan Geriatric Hospital and Institute of Gerontology, Tokyo, Japan; Department of Pathology, Juntendo University School of Medicine, Tokyo, Japan
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Hamano Y. Effects of α-lipoic acid supplementation on sexual difference of growth performance, heat exposure-induced metabolic response and lipid peroxidation of raw meat in broiler chickens. Br Poult Sci 2014; 55:343-50. [DOI: 10.1080/00071668.2014.903559] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hamano Y, Kida H, Nishikawa H, Tripathi L, Ihara S, Arai T, Hirose M, Tada Y, Suenaga T, Mori M, Yano Y, Arase H, Mizuguchi K, Sakaguchi S, Inoue Y, Kumanogoh A. AB1025 Identification of Anti-Myxovirus Resistance Protein-1 Autoantibody as A Specific Marker for Idiopathic Nonspecific Interstitial Pneumonia. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.2650] [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: 11/03/2022]
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Furuta S, Chaudhry A, Hamano Y, Fujimoto S, Nagafuchi H, Ozaki S, Makino H, Matsuo S, Endo T, Muso E, Ito C, Kusano E, Yamagata M, Ikeda K, Kasiwakuma D, Iwamoto I, Westman K, Jayne D. Comparison of phenotype and outcome in microscopic polyangiitis between Europe and Japan. Presse Med 2013. [DOI: 10.1016/j.lpm.2013.02.193] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Takeuchi H, Hamano Y, Hasegawa Y. Rayleigh- and Love-wave discrepancy and the existence of magma pockets in the upper mantle. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb073i010p03349] [Citation(s) in RCA: 22] [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: 11/09/2022]
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Kang KP, Lee JE, Lee AS, Jung YJ, Lee S, Park SK, Kim W, Pokrywczynska M, Jundzill A, Krzyzanowska S, Flisinski M, Brymora A, Bodnar M, Deptula A, Marszalek A, Manitius J, Drewa T, Kloskowski T, Grosjean F, Esposito V, Torreggiani M, Esposito C, Zheng F, Vlassara H, Striker G, Michael S, Viswanathan P, Ganesh R, Kimachi M, Nishio S, Nakazawa D, Ishikawa Y, Toyoyama T, Satou A, Nakagaki T, Shibasaki S, Atumi T, Gattone V, Peterson R, Zimmerman K, Mega C, Reis F, Teixeira de Lemos E, Vala H, Fernandes R, Oliveira J, Teixeira F, Reis F, Niculae A, Niculae A, Checherita IA, Ciocalteu A, Hamano Y, Udagawa Y, Ueda Y, Yokosuka O, Ogawa M, Satoh M, Kidokoro K, Nagasu H, Nishi Y, Ihoriya C, Kadoya H, Yada T, Channon KM, Sasaki T, Kashihara N, Nyengaard JR, Razga Z, Hartono S, Knudsen B, Grande J, Watanabe M, Watanabe M, Ito K, Abe Y, Ogahara S, Nakashima H, Sato T, Saito T, Shin YT, Choi DE, Na KR, Chang YK, Kim SS, Lee KW, Mace C, Chugh S, Clement L, Tomochika M, Seiji H, Toshio M, Tetsuya K, Takao K, Jaen JC, Sullivan TJ, Miao Z, Zhao N, Berahovich R, Krasinski A, Powers JP, Ertl L, Schall TJ, Han SY, Sun HK, Han KH, Kim HS, Ahn SH, Kokeny G, Gasparics A, Fang L, Rosivall L, Sebe A, Banki NF, Fekete A, Wagner L, Ver A, Degrell P, Prokai A, George R, Szabo A, Baylis C, Vannay A, Tulassay T, Chollet C, Hus-Citharel A, Caron N, Bouby N, Silva K, Rampaso R, Luiz R, De Angelis K, Mostarda CT, Abreu N, Irigoyen MC, Schor N, Rampaso R, Luiz R, Silva K, Montemor J, Higa EMS, Schor N, Nagasu H, Satoh M, Kidokoro K, Kashihara N, Nakayama Y, Fukami K, Obara N, Ando R, Kaida Y, Ueda S, Yamagishi SI, Okuda S, Qin Q, Wang Z, Niu J, Xu W, Qiao Z, Qi W, Gu Y, Zitman-Gal T, Golan E, Green J, Pasmanik-Chor M, Oron-Karni V, Bernheim J, Benchetrit S, Tang RN, Tang RN, Wu M, Gao M, Liu H, Zhang XL, Liu BC. Diabetes - Experimental. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs220] [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] Open
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16
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Hamano Y. Alleviative effects ofα-lipoic acid supplementation on acute heat stress-induced thermal panting and the level of plasma nonesterified fatty acids in hypothyroid broiler chickens. Br Poult Sci 2012; 53:125-33. [DOI: 10.1080/00071668.2011.651443] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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17
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Takeda SI, Chinda J, Murakami T, Numata A, Iwazu Y, Akimoto T, Hamano Y, Muto S, Takahashi M, Kusano E. Development of features of glomerulopathy in tumor-bearing rats: a potential model for paraneoplastic glomerulopathy. Nephrol Dial Transplant 2011; 27:1786-92. [DOI: 10.1093/ndt/gfr565] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Tomomatsu J, Hamano Y, Ando J, Komatsu N, Sugimoto K. Non-myeloablative allogenic BMT for myelodysplastic syndrome successfully controlled accompanying relapsing polychondritis. Bone Marrow Transplant 2011; 47:742-3. [DOI: 10.1038/bmt.2011.159] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Isobe Y, Sugimoto K, Masuda A, Hamano Y, Oshimi K. Central nervous system is a sanctuary site for chronic myelogenous leukaemia treated with imatinib mesylate. Intern Med J 2010; 39:408-11. [PMID: 19580620 DOI: 10.1111/j.1445-5994.2009.01947.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Imatinib mesylate (IM) is currently used as the first therapeutic choice against chronic myelogenous leukaemia (CML). Because IM poorly penetrates the blood-brain barrier, IM-treated CML patients may have a potential risk of central nervous system (CNS) involvement. Here we report a case with lymphoid blast crisis isolated only in CNS after bacterial meningitis, although the patient achieved and maintained complete cytogenetic response by IM therapy. It is important to consider isolated CNS blast crisis as a possible event in IM-treated CML patients.
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Affiliation(s)
- Y Isobe
- Department of Hematology, Juntendo University School of Medicine, Tokyo, Japan.
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Toh H, Hamano Y, Goto T, Utada H. Long-Term Seafloor Electromagnetic Observation in the Northwest Pacific May Detect the Vector Geomagnetic Secular Variation. Data Sci J 2010. [DOI: 10.2481/dsj.ss_igy-004] [Citation(s) in RCA: 4] [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: 11/20/2022] Open
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21
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Hamano Y, Nicchu I, Shimizu T, Onji Y, Hiraki J, Takagi H. epsilon-Poly-L: -lysine producer, Streptomyces albulus, has feedback-inhibition resistant aspartokinase. Appl Microbiol Biotechnol 2007; 76:873-82. [PMID: 17611754 DOI: 10.1007/s00253-007-1052-3] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2007] [Revised: 05/11/2007] [Accepted: 05/22/2007] [Indexed: 10/23/2022]
Abstract
Streptomyces albulus NBRC14147 produces epsilon-poly-L: -lysine (epsilon-PL), which is an amino acid homopolymer antibiotic. Despite the commercial importance of epsilon-PL, limited information is available regarding its biosynthesis; the L: -lysine molecule is directly utilized for epsilon-PL biosynthesis. In most bacteria, L: -lysine is biosynthesized by an aspartate pathway. Aspartokinase (Ask), which is the first enzyme in this pathway, is subject to complex regulation such as through feedback inhibition by the end-product amino acids such as L: -lysine and/or L: -threonine. S. albulus NBRC14147 can produce a large amount of epsilon-PL (1-3 g/l). We therefore suspected that Ask(s) of S. albulus could be resistant to feedback inhibition to provide sufficient L: -lysine for epsilon-PL biosynthesis. To address this hypothesis, in this study, we cloned the ask gene from S. albulus and investigated the feedback inhibition of its gene product. As predicted, we revealed the feedback resistance of the Ask; more than 20% relative activity of Ask was detected in the assay mixture even with extremely high concentrations of L: -lysine and L: -threonine (100 mM each). We further constructed a mutated ask gene for which the gene product Ask (M68V) is almost fully resistant to feedback inhibition. The homologous expression of Ask (M68V) further demonstrated the increase in epsilon-PL productivity.
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Affiliation(s)
- Y Hamano
- Department of Bioscience, Fukui Prefectural University, 4-1-1 Matsuoka-Kenjojima, Eiheiji-cho, Fukui, 910-1195, Japan.
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22
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Hamano Y, Yoshida T, Kito M, Nakamori S, Nagasawa T, Takagi H. Biological function of the pld gene product that degrades -poly-l-lysine in Streptomyces albulus. Appl Microbiol Biotechnol 2006; 72:173-181. [PMID: 16568315 DOI: 10.1007/s00253-006-0396-4] [Citation(s) in RCA: 26] [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] [Received: 12/29/2005] [Revised: 02/22/2006] [Accepted: 02/27/2006] [Indexed: 11/25/2022]
Abstract
Epsilon-poly-L-lysine (epsilon-PL) is one of the few naturally occurring biopolymers and is characterized by a peptide bond between the alpha-carboxyl and epsilon-amino groups. Previously, we purified and characterized the epsilon-PL-degrading enzyme (Pld) from Streptomyces albulus, which is an epsilon-PL producer, and this enzyme was expected to confer self-resistance to the epsilon-PL produced by the organism itself. The gene encoding Pld was cloned based on the N-terminal amino acid sequence determined in this study, and a sequencing analysis revealed eight open reading frames (ORFs), i.e., ORF1 to ORF8 in the flanking region surrounding the pld gene (present in ORF5). To investigate the biological function of Pld, we constructed a knockout mutant in which the pld gene is inactivated. Studies on epsilon-PL susceptibility, epsilon-PL-degrading activity, and epsilon-PL productivity demonstrated that the pld gene does play a partial role in self-resistance and that S. albulus was found to produce other epsilon-PL-degrading enzyme(s) in addition to Pld. To the best of our knowledge, this is the first report on a self-resistance gene for a biopolymer possessing antibacterial activity.
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Affiliation(s)
- Y Hamano
- Department of Bioscience, Fukui Prefectural University, Fukui, 910-1195, Japan
| | - T Yoshida
- Department of Biomolecular Science, Gifu University, Gifu, 501-1193, Japan
| | - M Kito
- Department of Biomolecular Science, Gifu University, Gifu, 501-1193, Japan
| | - S Nakamori
- Department of Bioscience, Fukui Prefectural University, Fukui, 910-1195, Japan
| | - T Nagasawa
- Department of Biomolecular Science, Gifu University, Gifu, 501-1193, Japan.
| | - H Takagi
- Department of Bioscience, Fukui Prefectural University, Fukui, 910-1195, Japan.
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Arakawa O, Okada K, Mahmud Y, Takatani T, Kawatsu K, Hamano Y, Noguchi T. 248 Change in distribution of tetrodotoxin in the ovary of a marine pufferfish Takifugu vermicularis during spawning season. Toxicol Lett 2003. [DOI: 10.1016/s0378-4274(03)90247-5] [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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24
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Mahmud Y, Arakawa O, Ichinose A, Tanu M, Takatani T, Tsuruda K, Kawatsu K, Hamano Y, Noguchi T. 249 Immunoenzymatic visualization of tetrodotoxin (TTX) in the skin cells of a pufferfish Tetraodon nigroviridis. Toxicol Lett 2003. [DOI: 10.1016/s0378-4274(03)90248-7] [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: 11/26/2022]
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25
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Sato N, Okamoto S, Mori T, Watanabe R, Hamano Y, Kawamura J, Ishihara D, Ikeda Y. Recurrent acute myositis after allogeneic bone marrow transplantation for myelodysplasia. Hematology 2002; 7:109-12. [PMID: 12186701 DOI: 10.1080/10245330290022115] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [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: 10/28/2022] Open
Abstract
A 54-year-old woman developed polymyositis 6 months after allogeneic bone marrow transplantation (BMT) for acute myelogenous leukemia transformed from myelodysplasia. At the onset of myositis, the patient had oral dryness, and the histology of oral mucosa was compatible with chronic graft-versus-host disease (GVHD). Muscle biopsy revealed focal muscle necrosis with massive lymphocytic infiltration. She was diagnosed with polymyositis, and the dose of cyclosporine was increased. Three months later, a complete resolution of myositis had been obtained, and the cyclosporine was tapered off. However, 51 months after the first episode of myositis, she again noted severe myalgia and was diagnosed with a recurrence of polymyositis based on high serum creatinine kinase (CK) and the findings of magnetic resonance imaging (MRI). At that time, chronic GVHD in other organs was not present. She achieved a second remission of polymyositis with cyclosporine, and has remained in remission for 4 years. The pathogenesis of myositis can be attributed to the immunologic imbalance characteristic of the post-allogeneic BMT setting.
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Affiliation(s)
- N Sato
- Keio Bone Marrow Transplant Program, Division of Hematology, Department of Medicine, School of Medicine, Keio University, 35-Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
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26
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Tanu MB, Mahmud Y, Takatani T, Kawatsu K, Hamano Y, Arakawa O, Noguchi T. Localization of tetrodotoxin in the skin of a brackishwater puffer Tetraodon steindachneri on the basis of immunohistological study. Toxicon 2002; 40:103-6. [PMID: 11602286 DOI: 10.1016/s0041-0101(01)00179-9] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [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: 11/17/2022]
Abstract
A monoclonal antibody-based immunoassay for localization of tetrodotoxin (TTX) in the skin of a brackishwater puffer Tetraodon steindachneri is described in this paper. TTX was recognized in the undifferentiated basal cells and succiform cells in the skin under light microscope. Malpighian cells of the skin did not exhibit any TTX antigen. Neither gland nor enclosed gland-like apparatus possessing TTX was apparent in the skin.
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Affiliation(s)
- M B Tanu
- Graduate School of Marine Science and Engineering, Nagasaki University, 852-8521, Nagasaki, Japan
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27
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Yamashiro K, Mori H, Suzuki A, Mori K, Hamano Y, Mizuno Y. [A patient with intravascular malignant lymphomatosis presenting subacute dementia one year after sustained urinary retention and high serum LDH activity from the onset]. Rinsho Shinkeigaku 2001; 41:784-91. [PMID: 12080610] [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: 02/25/2023]
Abstract
We report a 71-year-old man with intravascular malignant lymphomatosis who showed high serum LDH and urinary disturbance for one year before manifesting dementia. High serum LDH was found at a health check at age 70. Two months later, he had an onset of backache and urinary retention. MRI of the spinal cord was unremarkable. One year later, he showed decline of mental activities and was admitted to our hospital. He was agitated and confused. However cranial nerve palsy or limb weakness was not noted. The MRI of the brain showed T2-high signal in bilateral occipital, right temporal lobe and the left insular cortices. The abdominal CT scan showed swelling of the adrenals on both sides. Adrenal biopsy revealed diffuse large B cell lymphoma. He developed respiratory distress and he died two months after the admission. Post mortem examination revealed intravascular and extravascular proliferation of lymphoma cells in most of the internal organs including adrenals, spleen, liver and the kidneys. In the brain, the laminar necrosis was seen in the left occipital cortex and hemorrhagic infarctions were noted in the insular and temporal cortices and the medial temporal cortex. Sacral spinal cord showed necrosis of the gray matters and loss of myelinated fibers in the white matter. Intravascular proliferation of the lymphoma cells were also seen in the vessels of the brain and the spinal cord. This patient suggests the importance of survey for intravascular malignant lymphomatosis, when high serum LDH and myelopathy of lumbosacral area are seen.
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Affiliation(s)
- K Yamashiro
- Department of Neurology, School of Medicine, Juntendo University
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Dairi T, Hamano Y, Kuzuyama T, Itoh N, Furihata K, Seto H. Eubacterial diterpene cyclase genes essential for production of the isoprenoid antibiotic terpentecin. J Bacteriol 2001; 183:6085-94. [PMID: 11567009 PMCID: PMC99688 DOI: 10.1128/jb.183.20.6085-6094.2001] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [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: 11/20/2022] Open
Abstract
A gene cluster containing the mevalonate pathway genes (open reading frame 2 [ORF2] to ORF7) for the formation of isopentenyl diphosphate and a geranylgeranyl diphosphate (GGDP) synthase gene (ORF1) had previously been cloned from Streptomyces griseolosporeus strain MF730-N6, a diterpenoid antibiotic, terpentecin (TP) producer (Y. Hamano, T. Dairi, M. Yamamoto, T. Kawasaki, K Kaneda, T. Kuzuyama, N. Itoh, and H. Seto, Biosci. Biotech. Biochem. 65:1627-1635, 2001). Sequence analysis in the upstream region of the cluster revealed seven new ORFs, ORF8 to ORF14, which were suggested to encode TP biosynthetic genes. We constructed two mutants, in which ORF11 and ORF12, which encode a protein showing similarities to eukaryotic diterpene cyclases (DCs) and a eubacterial pentalenene synthase, respectively, were inactivated by gene disruptions. The mutants produced no TP, confirming that these cyclase genes are essential for the production of TP. The two cyclase genes were also expressed in Streptomyces lividans together with the GGDP synthase gene under the control of the ermE* constitutive promoter. The transformant produced a novel cyclic diterpenoid, ent-clerod-3,13(16),14-triene (terpentetriene), which has the same basic skeleton as TP. The two enzymes, each of which was overproduced in Escherichia coli and purified to homogeneity, converted GGDP into terpentetriene. To the best of our knowledge, this is the first report of a eubacterial DC.
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Affiliation(s)
- T Dairi
- Biotechnology Research Center, Toyama Prefectural University, Toyama, Japan.
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Hamano Y, Dairi T, Yamamoto M, Kawasaki T, Kaneda K, Kuzuyama T, Itoh N, Seto H. Cloning of a gene cluster encoding enzymes responsible for the mevalonate pathway from a terpenoid-antibiotic-producing Streptomyces strain. Biosci Biotechnol Biochem 2001; 65:1627-35. [PMID: 11515548 DOI: 10.1271/bbb.65.1627] [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: 11/08/2022]
Abstract
A gene cluster encoding enzymes responsible for the mevalonate pathway was isolated from Streptomyces griseolosporeus strain MF730-N6, a terpenoid-antibiotic terpentecin producer, by searching a flanking region of the 3-hydroxy-3-methylglutaryl coenzyme A (HMG-CoA) reductase gene, which had been previously isolated by complementation. By DNA sequencing of an 8.9-kb BamHI fragment, 7 genes encoding geranylgeranyl diphosphate synthase (GGDPS), mevalonate kinase (MK), mevalonate diphosphate decarboxylase (MDPD), phosphomevalonate kinase (PMK), isopentenyl diphosphate (IPP) isomerase, HMG-CoA reductase, and HMG-CoA synthase were suggested to exist in that order. Heterologous expression of these genes in E. coli and Streptomyces lividans, both of which have only the nonmevalonate pathways, suggested that the genes for the mevalonate pathway were included in the cloned DNA fragment. The GGDPS, MK, MDPD, PMK, IPP isomerase, and HMG-CoA synthase were expressed in E. coli. Among them, the recombinant GGDPS, MK, and IPP isomerase were confirmed to have the expected activities. This is the first report, to the best of our knowledge, about eubacterial MK with direct evidence.
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Affiliation(s)
- Y Hamano
- Biotechnology Research Center, Toyama Prefectural University, Japan
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30
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Hirose S, Jiang Y, Hamano Y, Shirai T. Genetic aspects of inherent B-cell abnormalities associated with SLE and B-cell malignancy: lessons from New Zealand mouse models. Int Rev Immunol 2001; 19:389-421. [PMID: 11016425 DOI: 10.3109/08830180009055505] [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: 11/13/2022]
Abstract
Genes that predispose to SLE are closely related to key events in pathogenesis of this disease. As much of the pathology can be attributed to high affinity autoantibodies and/or their immune complexes, some of the genes may exert effects in the process of emergence, escape from tolerance mechanisms, activation, clonal expansion, differentiation, class switching and affinity maturation of self-reactive B cells. A number of growth and differentiation factors and signaling molecules, including positive and negative regulators, are involved in this process. Genetic variations associated with functional deficits in some of such molecules can be involved in the susceptibility for SLE. As is the case with SLE, hereditary factors play significant roles in the pathogenesis of B cell chronic lymphocytic leukemia (B-CLL). Patients with B-CLL or their family members frequently have immunological abnormalities, including those associated with SLE. It is suggested that certain genetically determined regulatory abnormalities of B cells may be a crossroad between B-CLL and SLE. A thorough understanding of the genetic pathways in B cell abnormalities leading to either SLE or B-CLL is expected to shed light on their association. New Zealand mouse strains are pertinent laboratory models for these studies. Chromosomal locations of several major genetic loci for abnormal proliferation, differentiation and maturation of B cells and relevant candidate genes, located in close proximity to these intervals and potentially related to the SLE pathogenesis, have been identified in these mice. Further studies make for a wider knowledge and understanding of the pathogenesis of SLE and related B-cell malignancy.
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MESH Headings
- Animals
- B-Lymphocytes/physiology
- Cell Differentiation
- Chromosome Mapping
- Disease Models, Animal
- Disease Susceptibility
- Genetic Linkage
- H-2 Antigens/genetics
- Hypergammaglobulinemia/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/immunology
- Lupus Erythematosus, Systemic/genetics
- Lupus Erythematosus, Systemic/immunology
- Mice
- Mice, Inbred NZB
- Multigene Family
- Receptors, IgG/genetics
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Affiliation(s)
- S Hirose
- Department of Pathology, Juntendo University School of Medicine, Tokyo, Japan.
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Abstract
The design of a simple facial mask type appliance for the treatment of Class III with anterior crossbite in the primary dentition, is described. Its clinical effect is illustrated in two cases. The appliance is easy to make, cheap, well tolerated and efficient.
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Affiliation(s)
- T Murakami
- Department of Orthodontics, Kyushu University Faculty of Dentistry, Maidashi 3-1-1, Higashi-ku, Fukuoka 812-8582, Japan
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32
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Kawatsu K, Hamano Y, Noguchi T. Determination of domoic acid in Japanese mussels by enzyme immunoassay. J AOAC Int 2000; 83:1384-6. [PMID: 11128141] [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: 02/18/2023]
Abstract
Ten samples of commercial blue mussels (Mytilus edulis) from Japan were analyzed for domoic acid by an indirect competitive enzyme immunoassay (idc-EIA) based on an anti-domoic acid monoclonal antibody. Domoic acid was found in all samples at low concentrations (0.11-1.81 ng/g mussel tissue). The presence of domoic acid was confirmed by liquid chromatography coupled with immunoaffinity chromatography using an anti-domoic acid monoclonal antibody as ligand. To our knowledge, this is the first reported detection of domoic acid, a causative agent of amnesic shellfish poisoning, in Japanese mussels.
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Affiliation(s)
- K Kawatsu
- Osaka Prefectural Institute of Public Health, Department of Food Microbiology, Nakamichi, Japan
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33
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Ishikawa T, Hamano Y, Okamoto H. Frequent detection of TT virus in throat swabs of pediatric patients. Infection 2000; 27:298. [PMID: 10885852] [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: 02/17/2023]
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Hamano Y, Arase H, Saisho H, Saito T. Immune complex and Fc receptor-mediated augmentation of antigen presentation for in vivo Th cell responses. J Immunol 2000; 164:6113-9. [PMID: 10843660 DOI: 10.4049/jimmunol.164.12.6113] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
It has recently been established that FcRs are involved in the triggering of type II and III inflammatory responses. Although FcR is not believed to be involved in the regulation of T cell function, the in vivo contribution of FcRs to T cell function still remains unclear. We analyzed in vivo responses of delayed-type hypersensitivity and proliferation of CD4+ T cells to Ags in FcRgamma-/- mice lacking the expression and function of FcgammaRI, FcgammaRIII, and FcepsilonRI. We found that the delayed-type hypersensitivity response in FcRgamma-/- mice is significantly decreased compared with that in wild-type mice. Moreover, the secondary responses of proliferation and cytokine production as well as the Ab formation by CD4+ T cells from FcRgamma-/- mice to Ag and normal APCs were also reduced. In contrast, in vitro primary T cell proliferative responses upon stimulation with anti-TCR Ab or MLR as well as in vivo primary response against staphylococcus enterotoxin B administration were not different between T cells from FcRgamma-/- and wild-type mice. In addition, the Ag presentation function of APCs from unimmunized FcRgamma-/- mice was normal. On the other hand, Ab-deficient mice also revealed impaired T cell responses. These results demonstrate that the defective T cell responses in FcRgamma-/- mice were due to impaired Ag presentation during in vivo priming not to a defect in T cells. Therefore, they suggest that the FcRs on APCs mediate efficient priming of Th cell responses in vivo in an immune complex-dependent manner.
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MESH Headings
- Adjuvants, Immunologic/deficiency
- Adjuvants, Immunologic/genetics
- Adjuvants, Immunologic/physiology
- Animals
- Antigen Presentation/genetics
- Antigen-Antibody Complex/physiology
- Dose-Response Relationship, Immunologic
- Hypersensitivity, Delayed/genetics
- Hypersensitivity, Delayed/immunology
- Immune Tolerance/genetics
- Lymphocyte Activation/genetics
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Knockout
- Receptors, IgG/deficiency
- Receptors, IgG/genetics
- Receptors, IgG/physiology
- T-Lymphocytes/immunology
- T-Lymphocytes/metabolism
- T-Lymphocytes, Helper-Inducer/immunology
- T-Lymphocytes, Helper-Inducer/metabolism
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Affiliation(s)
- Y Hamano
- Department of Molecular Genetics, Chiba University Graduate School of Medicine, Japan
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Hamano Y, Kamota Y, Sugawara S. Effects of Lipoic Acid on Plasma Metabolites and Metabolic Response to Intravenous Injection of Isoproterenol in Broilers. Asian Australas J Anim Sci 2000. [DOI: 10.5713/ajas.2000.653] [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] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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36
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Jiang Y, Hirose S, Abe M, Sanokawa-Akakura R, Ohtsuji M, Mi X, Li N, Xiu Y, Zhang D, Shirai J, Hamano Y, Fujii H, Shirai T. Polymorphisms in IgG Fc receptor IIB regulatory regions associated with autoimmune susceptibility. Immunogenetics 2000; 51:429-35. [PMID: 10866109 DOI: 10.1007/s002510050641] [Citation(s) in RCA: 134] [Impact Index Per Article: 5.6] [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: 10/27/2022]
Abstract
Autoimmune diseases involve multiple genes. While functions of these genes are largely unknown, some may be related to an intrinsic hyperresponsiveness of B cells. B-cell responses are controlled by signaling thresholds through the B-cell antigen receptor (BCR) complex. The B1 isoform of type II IgG Fc receptors (FcgammaRIIB1) is exclusively expressed on B cells and serves as a negative regulator for inhibiting BCR-elicited activation. Thus, its allelic variants associated with functional deficits could be examined for possible associations with susceptibility to autoimmune diseases. We found that there are three types of polymorphisms in the reported FcgammaRIIB transcription regulatory regions in mouse strains. Compared to normal healthy mouse strains (group III), autoimmune disease-prone strains (group I) share three deletion sites: two in the promoter region and one in the third intron. Strains (group II) that per se are not autoimmune-prone, but have potentials to accelerate autoimmune diseases share two deletion sites in the third intron: one identical to that in group I and the other unique to group II. These polymorphisms correlated well with extents of down-regulation of FcgammaRIIB1 expression in germinal-center B cells upon stimulation with antigens and up-regulation of IgG antibody responses. Our data imply that these FcgammaRIIB polymorphisms are selected evolutionarily for natural defense against pathogens, and that such polymorphisms may, in turn, form the basis of one aspect of autoimmune susceptibility.
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MESH Headings
- Animals
- Antigens, CD/biosynthesis
- Antigens, CD/genetics
- Autoantibodies/biosynthesis
- B-Lymphocytes/immunology
- B-Lymphocytes/metabolism
- Base Sequence
- Female
- Genetic Predisposition to Disease/genetics
- Germinal Center/cytology
- Germinal Center/immunology
- Germinal Center/metabolism
- Immunoglobulin G/biosynthesis
- Lupus Erythematosus, Systemic/genetics
- Lupus Erythematosus, Systemic/immunology
- Mice
- Mice, Inbred AKR
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Inbred DBA
- Mice, Inbred MRL lpr
- Mice, Inbred NOD
- Mice, Inbred NZB
- Molecular Sequence Data
- Polymorphism, Genetic/genetics
- Receptors, IgG/biosynthesis
- Receptors, IgG/genetics
- Regulatory Sequences, Nucleic Acid/genetics
- Regulatory Sequences, Nucleic Acid/immunology
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Affiliation(s)
- Y Jiang
- Department of Pathology, Juntendo University School of Medicine, Tokyo, Japan
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Ikebe S, Mori H, Sumino S, Takanashi M, Hamano Y, Shirai T, Ohkuma Y, Mizuno Y. [A 77-year-old man with gait and gaze disturbance]. No To Shinkei 2000; 52:269-79. [PMID: 10769850] [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: 02/16/2023]
Abstract
We report a 77-year-old Japanese man with progressive gait disturbance. He was well until his 71 years of the age (1992), when he noted an onset of disturbance in his speech, which was followed by difficulty in using his left hand. He did not attempt to use his left hand afterwards. He started to fall down in the spring of 1994. He was admitted to our service on October 6, 1994. Neurologic examination revealed an alert and oriented man. He showed limb-kinetic apraxia in his left hand with anosognosia for his apraxia. Vertical gaze was impaired. He walked in small steps. He had moderate axial and limb rigidity. He had no weakness, ataxia, or tremor. Deep tendon reflexes were normal. Plantar response was flexor. Sensation was intact. His gait had progressively become worse and he was admitted to another hospital in April of 1996. At that time he was disoriented to time. He was only able to walk a few steps with support. He continued to show limb-kinetic apraxia in his left hand. He developed dementia and dysphagia and he expired on October 27, 1998. He was discussed in a neurological CPC, and the chief discussant arrived at the conclusion that the patient had corticobasal degeneration. Most of the participants agreed with this diagnosis, but a few of them thought that progressive supranuclear palsy would be more likely. Post-mortem examination revealed no gross cortical atrophy. The right hemisphere was kept frozen for future biochemical analysis. The left precentral gyrus showed spongy changes, neuronal loss and gliosis. The pallidum, putamen, and the subthalamic nucleus were unremarkable, however, neurofibrillary tangles were seen in the subthalamic nucleus. The substantia nigra showed only slight neuronal loss; neuronal pigments were well retained. A few neurofibrillary tangles were seen in the remaining neurons. The cerebellar dentate nucleus showed grumose degeneration. Gallyas-Braak staining revealed many tuft-shaped astrocytes in the precentral gyrus. Pathologic diagnosis was progressive supranuclear palsy. Some participants thought that this diagnosis was unacceptable, because the pathologic changes in the substantia nigra, globus pallidus, and the subthalamic nucleus, which were usually severely involved in PSP, did not show typical changes of PSP. In addition, the predominant clinical feature was limb-kinetic apraxia, although he showed vertical gaze paresis and parkinsonian gait, which could also be seen in corticobasal degeneration. There was a big discussion among participants with regard to the diagnosis.
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Affiliation(s)
- S Ikebe
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
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38
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Fujii H, Yoshida M, Gong ZX, Matsumoto T, Hamano Y, Fukunaga M, Hruban RH, Gabrielson E, Shirai T. Frequent genetic heterogeneity in the clonal evolution of gynecological carcinosarcoma and its influence on phenotypic diversity. Cancer Res 2000; 60:114-20. [PMID: 10646862] [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: 02/15/2023]
Abstract
Carcinosarcomas of the uterus, ovaries, and fallopian tubes are highly aggressive neoplasms with incompletely understood histogenesis. Although recent immunohistochemical, cell culture, and molecular genetic studies all favor these cancers to be monoclonal in origin, the extent of intratumoral genetic heterogeneity in these tumors with divergent histology has not been reported previously. For this study, we microdissected a total of 172 carcinomatous or sarcomatous foci from 17 gynecological carcinosarcomas and analyzed allelic status with 41 microsatellite markers on chromosomal arms 1p, 1q, 3p, 4q, 5q, 6q, 8p, 9p, 10q, 11p, 11q, 13q, 16q, 17p, 17q, 18q, and 22q. With the exception of a single case with microsatellite instability, we found shared allelic losses and retentions among multiple individually dissected foci of each case, strongly supportive of the concept of a monoclonal origin for these neoplasms. In eight of these cases, we also found heterogeneous patterns of allelic loss at limited numbers of chromosomal loci in either the carcinomatous or sarcomatous components of the neoplasms. These heterogeneous patterns of allelic losses were consistent with either genetic progression or genetic diversion occurring during the clonal evolution of these neoplasms. In two cases, we found the specific patterns of genetic progression to be consistent with sarcomatous components of the neoplasms arising from carcinomatous components. We conclude that most of the gynecological carcinosarcomas have a monoclonal origin, and that genetic progression and diversion parallel the development of divergent phenotypes in these tumors. Because phenotypically divergent areas of the tumors share numerous genetic alterations, this divergence most likely occurs relatively late in the evolution of these tumors.
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Affiliation(s)
- H Fujii
- Department of Pathology II, Juntendo University School of Medicine, Tokyo, Japan.
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Takanashi M, Urabe T, Ohta S, Hamano Y, Mori H, Shirai T, Kondo T, Mizuno Y. [A 73-year-old woman with familial Parkinson's disease]. No To Shinkei 1999; 51:1087-96. [PMID: 10654309] [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: 04/14/2023]
Abstract
We report a 73-year-old Japanese woman with familial Parkinson's disease. The patient was well until her 67 years of the age, when she noted rest tremor in her right hand. Soon after her gait became short stepped. She visited our clinic on October 6, 1992 when she was 68 years old. She was alert and well oriented without dementia. She showed masked face, small voice, small stepped gait, retropulsion, resting tremor in her right hand, rigidity in the neck, and bradykinesia. She was treated with 400 mg/day of levodopa-carbidopa, which improved her symptoms, however, she developed wearing off phenomenon 3 years after the initiation of levodopa treatment. On August 26, 1998, she developed abdominal pain, diarrhea, and vomiting. She was admitted to another hospital, where abdominal plain x-ray revealed an evidence of intestinal obstruction (ileus). She was treated with nasogastric suction and intravenous fluid. Her condition did not improve and she was transferred to our hospital on August 29, 1998. Her family history revealed no consanguineous marriage. She had two elder brothers and three elder sisters. One of her brothers had been diagnosed as Parkinson's disease. Her husband also suffered from Parkinson's disease, however, her parents apparently did not have Parkinson's disease. On admission, she appeared to be drowsy. Her blood pressure was 102/70 mmHg, body temperature 36.2 degrees C. The lungs were clear and no cardiac murmur was present. Abdomen was flat and bowel sound was audible. No abnormal mass was palpable. Neurologic examination revealed mild consciousness disturbance, masked face, and small voice. No motor paralysis was noted. Muscle tone was hypotonic. No abnormal involuntary movement was noted. Abnormal laboratory findings on admission were as follows; WBC 11,300/microliter, amylase 1,373 IU/l, CK 446 IU/l, BUN 50 mg/dl, creatinine 1.17 mg/dl, CRP 22.7 mg/ dl, Na 134 mEq/l, K 3.1 mEq/l, and Cl 81 mEq/l. A chest x-ray film revealed pneumonic shadows in both lower lung fields. She was treated by nasointestinal suction, intravenous fluids, and chemotherapy for her infection. Her BP started to drop on September 2 and she developed cardiac arrest on the same day. She was discussed in a neurological CPC. The chief discussant arrived at the conclusion that the patient had a form of autosomal dominant familial Parkinson's disease. As parents did not have Parkinson's disease, some of the participants raised the possibility of autosomal recessive inheritance. But the age of onset was too late for autosomal recessive inheritance. Majority thought that the mode of inheritance was autosomal dominant with low penetrance. alpha-Synuclein mutation causes an autosomal dominant familial Parkinson's disease, but this type is very rare in non-Greek populations and the penetrance is high. Chromosome 2-linked autosomal dominant familial Parkinson's disease shows low penetrance. There are many other autosomal dominant forms of familial Parkinson's disease linked to yet unknown chromosome loci. Majority thought that this patient also had a form of Lewy-body positive autosomal dominant familial Parkinson's disease of unknown chromosome locus. Post mortem examination revealed ischemic intestinal lesion with strangulation. This was thought to be the cause of her death. In the central nervous system, the brain appeared to be normal by inspection. In the coronal sections, the substantia nigra and the locus coeruleus showed marked depigmentation. Histologic examination revealed marked neuronal loss and Lewy body formation in the remaining neurons. Pathologic examination was consistent with Parkinson's disease. Mutational analysis for the parkin gene was negative.
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Affiliation(s)
- M Takanashi
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
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40
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Hamano Y, Sugawara S, Kamota Y, Nagai E. Involvement of lipoic acid in plasma metabolites, hepatic oxygen consumption, and metabolic response to a beta-agonist in broiler chickens. Br J Nutr 1999; 82:497-503. [PMID: 10690165] [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: 02/15/2023]
Abstract
The present study was conducted to determine the role of alpha-lipoic acid (LA) in plasma metabolites, hepatic O2 consumption, and beta-adrenergic response in broilers. In Expt 1, 12-d-old female broiler chicks were divided into three dietary groups and fed on diets with or without LA (5 or 50 mg/kg) until 4 or 6 weeks of age, as a 2 x 3 factorial arrangement. The dietary LA had no effect on growth rates (body weight, abdominal fat, breast muscle, and liver). The higher level of LA increased plasma non-esterified fatty acid and decreased plasma triacylglycerol concentrations only at 6 weeks of age. A 42% increase in hepatic respiration was observed in the 4-week-old chickens given 50 mg LA/kg diet. In Expt 2, 3-d-old female broiler chicks were treated with or without dietary LA at 50 mg/kg. At 30 and 31 d old, isoproterenol (2 mg/kg body weight per h) was continuously infused into a wing vein for 2 h, and changes in plasma glucose, triacylglycerol, and non-esterified fatty acid concentrations were analysed. Isoproterenol increased plasma glucose over basal levels maximally at 60 min. Furthermore, the glucose increase in the LA-treated chickens was 35% greater than that of the controls at this time. Plasma non-esterified fatty acid and triacylglycerol concentrations were decreased by the isoproterenol infusion, regardless of LA administration. Therefore, the present study suggests that dietary LA has repartitioning effects on energy metabolism in chickens (although this depends on age-related metabolic state) and is a possible facilitator in the beta-adrenergic response of plasma glucose to a beta-agonist.
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Affiliation(s)
- Y Hamano
- Department of Animal Science, Akita Prefectural College of Agriculture, Ohgata, Japan.
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41
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Shirai J, Ida A, Jiang Y, Sanokawa-Akakura R, Miura Y, Yan K, Hamano Y, Hirose S, Shirai T. Genetic polymorphism of murine tissue plasminogen activator associated with antiphospholipid syndrome. Genes Immun 1999; 1:130-6. [PMID: 11196659 DOI: 10.1038/sj.gene.6363651] [Citation(s) in RCA: 4] [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: 11/09/2022]
Abstract
In a subset of patients with systemic lupus erythematosus (SLE), antiphospholipid syndrome characterized by thrombocytopenia, thrombosis, recurrent abortion and antiphospholipid antibodies develops. Male (NZW x BXSB) F1 mice are widely used as a model for SLE-associated antiphospholipid syndrome. Our earlier genetic studies showed that one susceptibility allele for thrombocytopenia and associated IgG platelet-binding autoantibodies in male (NZW x BXSB) F1 mice was linked to the BXSB-type polymorphic microsatellite D8Mit96, located in proximity to the gene Plat for tissue-type plasminogen activator (t-PA). In the present studies, sequence analyses for structural and promoter regions of Plat revealed a single nucleotide polymorphism encoding a catalytic domain of t-PA, with an amino acid substitution of anionic Glu366 in NZW for a cationic Lys in BXSB. Progeny studies using NZW x (NZW x BXSB) F1 male backcross mice showed that the BXSB Plat allele was significantly associated with high levels of both platelet-binding antibodies and thrombocytopenia. Furthermore, these two traits appeared to be regulated by a complementary effect of two BXSB alleles; one is linked to Plat and the other to the H-2 complex and the gene for plasminogen. Thus, the BXSB-type Plat may be one susceptibility allele for the multigenic antiphospholipid syndrome seen in (NZW x BXSB) F1 mice. Potential mechanisms are discussed.
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Affiliation(s)
- J Shirai
- Department of Pathology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
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Abstract
For production of monoclonal antibodies against domoic acid, a causative agent of amnesic shellfish poisoning, three immunogens, domoic acid conjugated with bovine serum albumin (BSA), ovalbumin (OVA) and human gamma globulin (HGG), were prepared. The antiserum obtained from BALB/c mice immunized with domoic acid-BSA showed the highest affinity for domoic acid. The monoclonal antibody, DA-3, obtained from the mice was highly specific for domoic acid and showed a minor cross-reactivity with the isomers of domoic acid (isodomoic acids B, E, F, G and H), except for isodomoic acid A. Using DA-3 antibody, an indirect competitive enzyme immunoassay (idc-EIA) was developed for measurement of domoic acid. The working range for quantitative measurement of domoic acid and the quantification limit for domoic acid in shellfish were estimated to be 0.15-10 ng/ml and less than 0.04 microg/g, respectively. The mean recovery of domoic acid added to extracts of shellfish at toxin levels of 0.02 to 0.2 microg/ml was 103% with a coefficient of variation of 4.5%. The newly developed idc-EIA seems to be a useful method for monitoring domoic acid in shellfish.
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Affiliation(s)
- K Kawatsu
- Department of Food Microbiology, Osaka Prefectural Institute of Public Health, Japan.
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Jiang Y, Hirose S, Sanokawa-Akakura R, Abe M, Mi X, Li N, Miura Y, Shirai J, Zhang D, Hamano Y, Shirai T. Genetically determined aberrant down-regulation of FcgammaRIIB1 in germinal center B cells associated with hyper-IgG and IgG autoantibodies in murine systemic lupus erythematosus. Int Immunol 1999; 11:1685-91. [PMID: 10508186 DOI: 10.1093/intimm/11.10.1685] [Citation(s) in RCA: 96] [Impact Index Per Article: 3.8] [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: 11/14/2022] Open
Abstract
Systemic lupus erythematosus (SLE) is a multigenic disease associated with IgG hypergammaglobulinemia, IgG anti-nuclear antibodies and immune complex (IC)-type glomerulonephritis. In both human and murine SLE, one susceptibility allele has been mapped to the interval linked to the IgG Fc receptor II (FcgammaRII) gene on chromosome 1. In spontaneous SLE models of NZB and (NZB x NZW) F(1) mice, expression of FcgammaRIIB1, which acts as a negative regulator for B cells, was abnormally down-regulated in follicular germinal center B cells from aged mice, compared to findings in non-SLE NZW, while levels in non-germinal center B cells were practically identical. Such strain differences were also evident in young mice upon in vivo stimulation with foreign antigens. In the FcgammaRIIB promoter region, the NZB allele has two deletion sites, including transcription factor-binding sites. Analyses using (NZB x NZW) F(1) x NZW backcross mice showed that this NZB allele was significantly linked to hyper-IgG, irrespective of the MHC haplotype, while high levels of IgG antibodies specific for DNA were regulated by a combinatorial effect of the F(1)-unique MHC haplotype and the NZB FcgammaRIIB allele. Therefore, the FcgammaRIIB promoter polymorphism may possibly predispose to SLE through germinal center B cells abnormally down-regulating FcgammaRIIB1 expression upon autoantigen stimulations and thus escaping negative signals for IgG production.
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MESH Headings
- Age Factors
- Alleles
- Animals
- Autoantibodies/blood
- B-Lymphocytes/immunology
- Base Sequence
- DNA/genetics
- DNA/immunology
- Down-Regulation
- Female
- Genotype
- Germinal Center/cytology
- Immunoglobulin G/blood
- Lupus Erythematosus, Systemic/genetics
- Lupus Erythematosus, Systemic/immunology
- Major Histocompatibility Complex/genetics
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Mice, Inbred NZB
- Molecular Sequence Data
- Polymerase Chain Reaction
- Polymorphism, Genetic
- Promoter Regions, Genetic/genetics
- RNA/analysis
- Receptors, IgG/genetics
- Receptors, IgG/metabolism
- Sequence Homology, Nucleic Acid
- Spleen/cytology
- Spleen/immunology
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Affiliation(s)
- Y Jiang
- Department of Pathology, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan
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Hamano Y, Yamazaki S, Miyahara M, Hamada Y, Kobayashi S, Terashima Y. Effects of a β-Adrenergic Agonist on Growth Performance and Protein Metabolism in Broilers Treated with or without an Antithyroid Substance. Asian Australas J Anim Sci 1999. [DOI: 10.5713/ajas.1999.788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yamazaki T, Hamano Y, Tashiro H, Itoh K, Nakano H, Miyatake S, Saito T. CAST, a novel CD3epsilon-binding protein transducing activation signal for interleukin-2 production in T cells. J Biol Chem 1999; 274:18173-80. [PMID: 10373416 DOI: 10.1074/jbc.274.26.18173] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.6] [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: 11/06/2022] Open
Abstract
Antigen recognition through T cell receptor (TCR)-CD3 complex transduces signals into T cells, which regulate activation, function, and differentiation of T cells. The TCR-CD3 complex is composed of two signaling modules represented by CD3zeta and CD3epsilon. Signaling through CD3zeta has been extensively analyzed, but that via CD3epsilon, which is also crucial in immature thymocyte development, is still not clearly understood. We isolated cDNA encoding a novel CD3epsilon-binding protein CAST. CAST specifically interacts in vivo and in vitro with CD3epsilon but not with CD3zeta or FcRgamma via a unique membrane-proximal region of CD3epsilon. CAST is composed of 512 amino acids including a single tyrosine and undergoes tyrosine phosphorylation upon TCR stimulation. Overexpression of two dominant-negative types of CAST, a minimum CD3epsilon-binding domain and a tyrosine-mutant, strongly suppressed NFAT activation and interleukin-2 production. These results demonstrate that CAST serves as a component of preformed TCR complex and transduces activation signals upon TCR stimulation and represents a new signaling pathway via the CD3epsilon-containing TCR signaling module.
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Affiliation(s)
- T Yamazaki
- Department of Molecular Genetics, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba 260-8670, Japan
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Dairi T, Hamano Y, Furumai T, Oki T. Development of a self-cloning system for Actinomadura verrucosospora and identification of polyketide synthase genes essential for production of the angucyclic antibiotic pradimicin. Appl Environ Microbiol 1999; 65:2703-9. [PMID: 10347064 PMCID: PMC91399 DOI: 10.1128/aem.65.6.2703-2709.1999] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
A self-cloning system for Actinomadura verrucosospora, a producer of the angucyclic antibiotic pradimicin A (PRM A), has been developed. The system is based on reproducible and reliable protoplasting and regeneration conditions for A. verrucosospora and a novel plasmid vector that consists of a replicon from a newly found Actinomadura plasmid and a selectable marker cloned from the Actinomadura strain. The system has an efficiency of more than 10(5) CFU/microgram of DNA. Using this system, we have cloned and identified the polyketide synthase (PKS) genes essential for PRM A biosynthesis from A. verrucosospora. Nucleotide sequence analysis of the 3.5-kb SalI-SphI fragment showed that ketosynthase subunits (open reading frame 1 [ORF1] and ORF2) of the essential PKS genes have strong similarities (59 to 89%) to those for angucyclic antibiotic biosynthesis.
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Affiliation(s)
- T Dairi
- Biotechnology Research Center, Toyama Prefectural University, Kurokawa 5180, Kosugi, Toyama 939-0398, Japan.
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47
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Hamano Y, Okada S, Tanaka T. Effects of thiamine and clenbuterol on body composition, plasma metabolites and hepatic oxygen consumption in broiler chicks. Br Poult Sci 1999; 40:127-30. [PMID: 10405048 DOI: 10.1080/00071669987953] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
1. We examined the effects of thiamine-hydrochloride (10 mg/kg body weight) and a beta-agonist, clenbuterol (50 microg/kg body weight), on plasma metabolites and hepatic oxygen consumption in female broiler chicks. 2. Clenbuterol, thiamine or both, dissolved in saline, were injected into thigh muscle on 2, 4 and 6 d of age. At 7 d of age blood samples in each treatment group were obtained and breast muscle and liver were weighed; liver slices were used for measurement of oxygen consumption. 3. Body weight gain was reduced by clenbuterol. Thiamine increased breast muscle weight as a proportion of body weight regardless of clenbuterol dose. Clenbuterol increased relative liver weight markedly, especially when chicks received thiamine also. 4. Clenbuterol increased plasma free fatty acid concentration in chicks treated with thiamine. Thiamine decreased plasma triglyceride regardless of clenbuterol dose. Plasma glucose concentration was decreased by both thiamine and clenbuterol. 5. The absolute rate of oxygen consumption in liver slices was greater in the thiamine-treated chicks; clenbuterol did not affect hepatic oxygen consumption. 6. These findings suggest that thiamine-induced energy expenditure results not only from thermogenesis in the liver, but also from increasing energy utilisation for muscle hypertrophy and this vitamin supplementation facilitates the lipolytic effects of the beta-agonist.
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Affiliation(s)
- Y Hamano
- Akita Prefectural College of Agriculture, Ohgata, Japan.
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Abstract
Immunoaffinity chromatography using the monoclonal antibody (Tl-1) specific for tetrodotoxin (TTX) has been developed for isolating TTX from urine samples. By combining immunoaffinity chromatography with fluorometric high performance liquid chromatography (HPLC), it has become possible to detect a small amount of TTX in urine samples. The detection limit of TTX in urine was 2 ng/ml. By this combined method, TTX was detected in all the urine samples that were collected from poisoned patients during the week following TTX ingestion. The combination of immunoaffinity chromatography with HPLC was very useful in detecting TTX from the urine samples of poisoned patients for diagnosis of TTX-food poisoning.
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Affiliation(s)
- K Kawatsu
- Department of Food Microbiology, Osaka Prefectural Institute of Public Health, Japan
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49
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Nagata M, Hattori M, Hamano Y, Ito K, Saitoh K, Watanabe T. Origin and phenotypic features of hyperplastic epithelial cells in collapsing glomerulopathy. Am J Kidney Dis 1998; 32:962-9. [PMID: 9856511 DOI: 10.1016/s0272-6386(98)70070-8] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.1] [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: 10/22/2022]
Abstract
The characteristic pathological feature of collapsing glomerulopathy (CG) is marked cell hyperplasia and hypertrophy within the glomeruli. The present study investigated the phenotypic alteration of hyperplastic epithelial cells in CG to determine their origin. Renal biopsy specimens from two patients with CG were analyzed by immunohistochemical staining, using markers for podocytes (PHM-5), parietal epithelial cells (PECs; cytokeratin), and cell proliferation (Ki-67). In collapsed glomeruli, hyperplastic and hypertrophic epithelial cells were frequently connected to PECs and collapsed glomerular basement membranes (GBMs). These epithelial cells were more often Ki-67 positive and expressed cytokeratin, whereas PHM-5 was almost invariably negative. Serial section analysis showed that a small number of hyperplastic epithelial cells expressed both PHM-5 and cytokeratin, suggesting phenotypic conversion between podocytes and PECs. Moreover, cytokeratin-positive cells were associated with the sclerotic glomerular segments. Thus, we suggest that the majority of hyperplastic and hypertrophic epithelial cells in CG are of PEC origin. These epithelial features may participate in the development of characteristic tuft collapse and glomerulosclerosis in CG.
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Affiliation(s)
- M Nagata
- Department of Pathology, Institute of Clinical and Basic Medical Sciences, University of Tsukuba, Ibaraki, Japan.
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Hamano Y, Hirose S, Ida A, Abe M, Zhang D, Kodera S, Jiang Y, Shirai J, Miura Y, Nishimura H, Shirai T. Susceptibility alleles for aberrant B-1 cell proliferation involved in spontaneously occurring B-cell chronic lymphocytic leukemia in a model of New Zealand white mice. Blood 1998; 92:3772-9. [PMID: 9808571] [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: 02/09/2023] Open
Abstract
B-cell chronic lymphocytic leukemia (B-CLL) and autoimmune disease are a related event, and genetic factors are linked to both diseases. As B-CLL is mainly of B-1 cell type that participates in autoantibody production, genetically-determined regulatory abnormalities in proliferation and/or differentiation of B-1 cells may determine their fate. We earlier found that, in H-2-congenic (NZB x NZW) F1 mice, while H-2(d/z) heterozygosity predisposes to autoimmune disease, H-2(z/z) homozygosity predisposes to B-CLL. Studies also suggested the involvement of non-H-2-linked NZW allele(s) in leukemogenesis. Using H-2-congenic NZW and B10 mouse strains, their F1 and backcross progeny, we have now identified three major NZW susceptibility loci for abnormal proliferation of B-1 cells, which form the basis of leukemogenesis; one H-2-linked locus on chromosome 17 and the other two non-H-2-linked loci, each on chromosome 13 and chromosome 17. Each susceptibility allele functioned independently, in an incomplete dominant fashion, the sum of effects determining the extent of aberrant B-1 cell frequencies. The development of leukemia was associated with age-related increase in B-1 cell frequencies in the blood. Thus, these alleles probably predispose B-1 cells to accumulate genetic alterations, giving rise to B-CLL. Potentially important candidate genes and correlation of the findings with autoimmune disease are discussed.
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MESH Headings
- Animals
- Autoimmune Diseases/genetics
- Autoimmune Diseases/immunology
- B-Lymphocytes/pathology
- Cell Division
- Cell Transformation, Neoplastic/genetics
- Chromosome Mapping
- Crosses, Genetic
- Female
- Genetic Predisposition to Disease
- Genotype
- H-2 Antigens/genetics
- Haplotypes
- Leukemia, Lymphocytic, Chronic, B-Cell/genetics
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Mice
- Mice, Congenic
- Mice, Inbred Strains
- Oncogenes
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Affiliation(s)
- Y Hamano
- Department of Pathology, Juntendo University School of Medicine, Tokyo, Japan
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