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Aokage T, Iketani M, Seya M, Meng Y, Ageta K, Naito H, Nakao A, Ohsawa I. Attenuation of pulmonary damage in aged lipopolysaccharide-induced inflammation mice through continuous 2 % hydrogen gas inhalation: A potential therapeutic strategy for geriatric inflammation and survival. Exp Gerontol 2023; 180:112270. [PMID: 37572992 DOI: 10.1016/j.exger.2023.112270] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/14/2023]
Abstract
INTRODUCTION With the global population aging, there is an increased prevalence of sepsis among the elderly, a demographic particularly susceptible to inflammation. This study aimed to evaluate the therapeutic potential of hydrogen gas, known for its anti-inflammatory and antioxidant properties, in attenuating inflammation specifically in the lungs and liver, and age-associated molecular markers in aged mice. METHODS Male mice aged 21 to 23 months, representative of the human elderly population, were subjected to inflammation via intraperitoneal injection of lipopolysaccharide (LPS). The mice were allocated into eight groups to examine the effects of varying durations and concentrations of hydrogen gas inhalation: control, saline without hydrogen, saline with 24-hour 2 % hydrogen, LPS without hydrogen, LPS with 24-hour 2 % hydrogen, LPS with 6-hour 2 % hydrogen, LPS with 1-hour 2 % hydrogen, and LPS with 24-hour 1 % hydrogen. Parameters assessed included survival rate, activity level, inflammatory biomarkers, and organ injury. RESULTS Extended administration of hydrogen gas specifically at a 2 % concentration for 24 h led to a favorable prognosis in the aged mice by reducing mRNA expression of inflammatory biomarkers in lung and liver tissue, mitigating lung injury, and diminishing the expression of the senescence-associated protein p21. Moreover, hydrogen gas inhalation selectively ameliorated senescence-related markers in lung tissue, including C-X-C motif chemokine 2, metalloproteinase-3, and arginase-1. Notably, hydrogen gas did not alleviate LPS-induced liver injury under the conditions tested. CONCLUSION The study highlights that continuous inhalation of hydrogen gas at a 2 % concentration for 24 h can be a potent intervention in the geriatric population for improving survival and physical activity by mitigating pulmonary inflammation and modulating senescence-related markers in aged mice with LPS-induced inflammation. This finding paves the way for future research into hydrogen gas as a therapeutic strategy to alleviate severe inflammation that can lead to organ damage in the elderly.
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Affiliation(s)
- Toshiyuki Aokage
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan; Biological Process of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan.
| | - Masumi Iketani
- Biological Process of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
| | - Mizuki Seya
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ying Meng
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Kohei Ageta
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiromichi Naito
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Atsunori Nakao
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ikuroh Ohsawa
- Biological Process of Aging, Tokyo Metropolitan Institute for Geriatrics and Gerontology, Tokyo, Japan
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Abstract
Molecular hydrogen (H2) is an antioxidant and anti-inflammatory agent; however, the molecular mechanisms underlying its biological effects are largely unknown. Similar to other gaseous molecules such as inhalation anesthetics, H2 is more soluble in lipids than in water. A recent study demonstrated that H2 reduces radical polymerization-induced cellular damage by suppressing fatty acid peroxidation and membrane permeability. Thus, we sought to examine the effects of short exposure to H2 on lipid composition and associated physiological changes in SH-SY5Y neuroblastoma cells. We analyzed cells by liquid chromatography-high-resolution mass spectrometry to define changes in lipid components. Lipid class analysis of cells exposed to H2 for 1 hour revealed transient increases in glycerophospholipids including phosphatidylethanolamine, phosphatidylinositol, and cardiolipin. Metabolomic analysis also showed that H2 exposure for 1 hour transiently suppressed overall energy metabolism accompanied by a decrease in glutathione. We further observed alterations to endosomal morphology by staining with specific antibodies. Endosomal transport of cholera toxin B to recycling endosomes localized around the Golgi body was delayed in H2-exposed cells. We speculate that H2-induced modification of lipid composition depresses energy production and endosomal transport concomitant with enhancement of oxidative stress, which transiently stimulates stress response pathways to protect cells.
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Affiliation(s)
- Masumi Iketani
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Iwao Sakane
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,Central Research Institute, ITO EN Ltd., Shizuoka, Japan
| | - Yasunori Fujita
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Masafumi Ito
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Ikuroh Ohsawa
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan,Correspondence to: Ikuroh Ohsawa, E-mail:
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Fujita Y, Iketani M, Ito M, Ohsawa I. Temporal changes in mitochondrial function and reactive oxygen species generation during the development of replicative senescence in human fibroblasts. Exp Gerontol 2022; 165:111866. [DOI: 10.1016/j.exger.2022.111866] [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] [Received: 01/24/2022] [Revised: 05/12/2022] [Accepted: 06/01/2022] [Indexed: 11/04/2022]
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Aokage T, Seya M, Hirayama T, Nojima T, Iketani M, Ishikawa M, Terasaki Y, Taniguchi A, Miyahara N, Nakao A, Ohsawa I, Naito H. The effects of inhaling hydrogen gas on macrophage polarization, fibrosis, and lung function in mice with bleomycin-induced lung injury. BMC Pulm Med 2021; 21:339. [PMID: 34719405 PMCID: PMC8559370 DOI: 10.1186/s12890-021-01712-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [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: 05/07/2021] [Accepted: 10/25/2021] [Indexed: 01/08/2023] Open
Abstract
Background Acute respiratory distress syndrome, which is caused by acute lung injury, is a destructive respiratory disorder caused by a systemic inflammatory response. Persistent inflammation results in irreversible alveolar fibrosis. Because hydrogen gas possesses anti-inflammatory properties, we hypothesized that daily repeated inhalation of hydrogen gas could suppress persistent lung inflammation by inducing functional changes in macrophages, and consequently inhibit lung fibrosis during late-phase lung injury. Methods To test this hypothesis, lung injury was induced in mice by intratracheal administration of bleomycin (1.0 mg/kg). Mice were exposed to control gas (air) or hydrogen (3.2% in air) for 6 h every day for 7 or 21 days. Respiratory physiology, tissue pathology, markers of inflammation, and macrophage phenotypes were examined. Results Mice with bleomycin-induced lung injury that received daily hydrogen therapy for 21 days (BH group) exhibited higher static compliance (0.056 mL/cmH2O, 95% CI 0.047–0.064) than mice with bleomycin-induced lung injury exposed only to air (BA group; 0.042 mL/cmH2O, 95% CI 0.031–0.053, p = 0.02) and lower static elastance (BH 18.8 cmH2O/mL, [95% CI 15.4–22.2] vs. BA 26.7 cmH2O/mL [95% CI 19.6–33.8], p = 0.02). When the mRNA levels of pro-inflammatory cytokines were examined 7 days after bleomycin administration, interleukin (IL)-6, IL-4 and IL-13 were significantly lower in the BH group than in the BA group. There were significantly fewer M2-biased macrophages in the alveolar interstitium of the BH group than in the BA group (3.1% [95% CI 1.6–4.5%] vs. 1.1% [95% CI 0.3–1.8%], p = 0.008). Conclusions The results suggest that hydrogen inhalation inhibits the deterioration of respiratory physiological function and alveolar fibrosis in this model of lung injury. Supplementary Information The online version contains supplementary material available at 10.1186/s12890-021-01712-2.
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Affiliation(s)
- Toshiyuki Aokage
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama, 700-8558, Japan
| | - Mizuki Seya
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama, 700-8558, Japan
| | - Takahiro Hirayama
- Department of Disaster Medicine and Management, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Tsuyoshi Nojima
- Department of Primary Care and Medical Education, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masumi Iketani
- Department of Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Michiko Ishikawa
- Department of Emergency, Disaster and Critical Care Medicine, Hyogo College of Medicine, Nishinomiya, Japan
| | - Yasuhiro Terasaki
- Department of Analytic Human Pathology, Nippon Medical School, Tokyo, Japan
| | - Akihiko Taniguchi
- Department of Hematology, Oncology, and Respiratory Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Nobuaki Miyahara
- Department of Medical Technology, Okayama University Graduate School of Health Sciences, Okayama, Japan
| | - Atsunori Nakao
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama, 700-8558, Japan
| | - Ikuroh Ohsawa
- Department of Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Hiromichi Naito
- Department of Emergency, Critical Care and Disaster Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama-shi, Okayama, 700-8558, Japan.
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Abstract
Oxidative stress and neuroinflammation cause many neurological disorders. Recently, it has been reported that molecular hydrogen (H2) functions as an antioxidant and anti-inflammatory agent. The routes of H2 administration in animal model and human clinical studies are roughly classified into three types, inhalation of H2 gas, drinking H2-dissolved water, and injection of H2-dissolved saline. This review discusses some of the remarkable progress that has been made in the research of H2 use for neurological disorders, such as cerebrovascular diseases, neurodegenerative disorders, and neonatal brain disorders. Although most neurological disorders are currently incurable, these studies suggest the clinical potential of H2 administration for their prevention, treatment, and mitigation. Several of the potential effectors of H2 will also be discussed, including cell signaling molecules and hormones that are responsible for preventing oxidative stress and inflammation. Nevertheless, further investigation will be required to determine the direct target molecule of H2.
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Affiliation(s)
| | - Ikuroh Ohsawa
- Biological Process of Aging, Tokyo Metropolitan Institute of Gerontology, 35-2 Sakae-cho, Itabashi-ku, Tokyo 173-0015, Japan
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Ishigaki M, Iketani M, Sugaya M, Takahashi M, Tanaka M, Hattori S, Ohsawa I. STED super-resolution imaging of mitochondria labeled with TMRM in living cells. Mitochondrion 2016; 28:79-87. [DOI: 10.1016/j.mito.2016.03.009] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 03/26/2016] [Accepted: 03/29/2016] [Indexed: 12/31/2022]
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Kurihara Y, Iketani M, Ito H, Nishiyama K, Sakakibara Y, Goshima Y, Takei K. LOTUS suppresses axon growth inhibition by blocking interaction between Nogo receptor-1 and all four types of its ligand. Mol Cell Neurosci 2014; 61:211-8. [PMID: 25034269 DOI: 10.1016/j.mcn.2014.07.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 07/11/2014] [Accepted: 07/14/2014] [Indexed: 10/25/2022] Open
Abstract
Axon growth inhibitors such as Nogo proteins, myelin-associated glycoprotein (MAG), oligodendrocyte myelin glycoprotein (OMgp), and B lymphocyte stimulator (BLyS) commonly bind to Nogo receptor-1 (NgR1), leading to enormous restriction of functional recovery after damage to the adult central nervous system. Recently, we found that lateral olfactory tract usher substance (LOTUS) antagonizes NgR1-mediated Nogo signaling. However, whether LOTUS exerts antagonism of NgR1 when bound by the other three ligands has not been determined. Overexpression of LOTUS together with NgR1 in COS7 cells blocked the binding of MAG, OMgp, and BLyS to NgR1. In cultured dorsal root ganglion neurons in which endogenous LOTUS is only weakly expressed, overexpression of LOTUS suppressed growth cone collapse and neurite outgrowth inhibition induced by these three NgR1 ligands. LOTUS suppressed NgR1 ligand-induced growth cone collapse in cultured olfactory bulb neurons, which endogenously express LOTUS. Growth cone collapse was induced by NgR1 ligands in lotus-deficient mice. These data suggest that LOTUS functions as a potent endogenous antagonist for NgR1 when bound by all four known NgR1 ligands, raising the possibility that LOTUS may protect neurons from NgR1-mediated axonal growth inhibition and thereby may be useful for promoting neuronal regeneration as a potent inhibitor of NgR1.
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Affiliation(s)
- Yuji Kurihara
- Molecular Medical Bioscience Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, Suehiro-cho 1-7-29, Tsurumi-ward, Yokohama 230-0045, Japan
| | - Masumi Iketani
- Molecular Medical Bioscience Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, Suehiro-cho 1-7-29, Tsurumi-ward, Yokohama 230-0045, Japan
| | - Hiromu Ito
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan
| | - Kuniyuki Nishiyama
- Division of Medical Life Science, Yokohama City University School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan; Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan
| | - Yusuke Sakakibara
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan
| | - Yoshio Goshima
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan; Advanced Medical Research Center, Yokohama City University Graduate School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan
| | - Kohtaro Takei
- Molecular Medical Bioscience Laboratory, Department of Medical Life Science, Yokohama City University Graduate School of Medical Life Science, Suehiro-cho 1-7-29, Tsurumi-ward, Yokohama 230-0045, Japan; Division of Medical Life Science, Yokohama City University School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan; Advanced Medical Research Center, Yokohama City University Graduate School of Medicine, Fukuura 3-9, Kanazawa-ward, Yokohama 236-0004, Japan.
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Iketani M, Iizuka A, Sengoku K, Kurihara Y, Nakamura F, Sasaki Y, Sato Y, Yamane M, Matsushita M, Nairn AC, Takamatsu K, Goshima Y, Takei K. Regulation of neurite outgrowth mediated by localized phosphorylation of protein translational factor eEF2 in growth cones. Dev Neurobiol 2012; 73:230-46. [PMID: 23008267 DOI: 10.1002/dneu.22058] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 09/12/2012] [Accepted: 09/15/2012] [Indexed: 11/10/2022]
Abstract
Nerve growth cones contain mRNA and its translational machinery and thereby synthesize protein locally. The regulatory mechanisms in the growth cone, however, remain largely unknown. We previously found that the calcium entry-induced increase of phosphorylation of eukaryotic elongation factor-2 (eEF2), a key component of mRNA translation, within growth cones showed growth arrest of neurites. Because dephosphorylated eEF2 and phosphorylated eEF2 are known to promote and inhibit mRNA translation, respectively, the data led to the hypothesis that eEF2-mediating mRNA translation may regulate neurite outgrowth. Here, we validated the hypothesis by using a chromophore-assisted light inactivation (CALI) technique to examine the roles of localized eEF2 and eEF2 kinase (EF2K), a specific calcium calmodulin-dependent enzyme for eEF2 phosphorylation, in advancing growth cones of cultured chick dorsal root ganglion (DRG) neurons. The phosphorylated eEF2 was weakly distributed in advancing growth cones, whereas eEF2 phosphorylation was increased by extracellular adenosine triphosphate (ATP)-evoked calcium transient through P2 purinoceptors in growth cones and resulted in growth arrest of neurites. The increase of eEF2 phosphorylation within growth cones by inhibition of protein phosphatase 2A known to dephosphorylate eEF2 also showed growth arrest of neurites. CALI of eEF2 within growth cones resulted in retardation of neurite outgrowth, whereas CALI of EF2K enhanced neurite outgrowth temporally. Moreover, CALI of EF2K abolished the ATP-induced retardation of neurite outgrowth. These findings suggest that an eEF2 phosphorylation state localized to the growth cone regulates neurite outgrowth.
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Affiliation(s)
- Masumi Iketani
- Division of Medical Life Sciences, Yokohama City University School of Medicine, Yokohama 236-0004, Japan
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Higurashi M, Iketani M, Takei K, Yamashita N, Aoki R, Kawahara N, Goshima Y. Localized role of CRMP1 and CRMP2 in neurite outgrowth and growth cone steering. Dev Neurobiol 2012; 72:1528-40. [PMID: 22378692 DOI: 10.1002/dneu.22017] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 02/22/2012] [Accepted: 02/23/2012] [Indexed: 11/10/2022]
Abstract
Collapsin response mediator protein 1 (CRMP1) and CRMP2 have been known as mediators of extracellular guidance cues such as semaphorin 3A and contribute to cytoskeletal reorganization in the axonal pathfinding process. To date, how CRMP1 and CRMP2 focally regulate axonal pathfinding in the growth cone has not been elucidated. To delineate the local functions of these CRMPs, we carried out microscale-chromophore-assisted light inactivation (micro-CALI), which enables investigation of localized molecular functions with highly spatial and temporal resolutions. Inactivation of either CRMP1 or CRMP2 in the neurite shaft led to arrested neurite outgrowth. Micro-CALI of CRMP2 in the central domain of the growth cones consistently arrested neurite outgrowth, whereas micro-CALI of CRMP1 in the same region caused significant lamellipodial retraction, followed by retardation of neurite outgrowth. Focal inactivation of CRMP1 in its half region of the growth cone resulted in the growth cone turning away from the irradiated site. Conversely, focal inactivation of CRMP2 resulted in the growth cone turning toward the irradiated site. These findings suggest different functions for CRMP1 and CRMP2 in growth cone behavior and neurite outgrowth.
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Affiliation(s)
- Masakazu Higurashi
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Japan
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Kurihara Y, Arie Y, Iketani M, Ito H, Nishiyama K, Sato Y, Nakamura F, Mizuki N, Goshima Y, Takei K. The carboxyl-terminal region of Crtac1B/LOTUS acts as a functional domain in endogenous antagonism to Nogo receptor-1. Biochem Biophys Res Commun 2012; 418:390-5. [PMID: 22281491 DOI: 10.1016/j.bbrc.2012.01.033] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2012] [Accepted: 01/08/2012] [Indexed: 10/14/2022]
Abstract
Myelin-derived axon growth inhibitors, such as Nogo, bind to Nogo receptor-1 (NgR1) and thereby limit the action of axonal regeneration after injury in the adult central nervous system. Recently, we have found that cartilage acidic protein-1B (Crtac1B)/lateral olfactory tract usher substance (LOTUS) binds to NgR1 and functions as an endogenous NgR1 antagonist. To examine the functional domain of LOTUS in the antagonism to NgR1, analysis using the deletion mutants of LOTUS was performed and revealed that the carboxyl-terminal region (UA/EC domain) of LOTUS bound to NgR1. The UA/EC fragment of LOTUS overexpressed together with NgR1 in COS7 cells abolished the binding of Nogo66 to NgR1. Overexpression of the UA/EC fragment in cultured chick dorsal root ganglion neurons suppressed Nogo66-induced growth cone collapse. These findings suggest that the UA/EC region is a functional domain of LOTUS serving for an antagonistic action to NgR1.
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Affiliation(s)
- Yuji Kurihara
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Fuku-ura 3-9, Kanazawa Ward, Yokohama 236-0004, Japan
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Higurashi M, Iketani M, Takei K, Yamashita N, Kawahara N, Goshima Y. Distinct roles of CRMP1 and CRMP2 within growth cones in axon growth. Neurosci Res 2011. [DOI: 10.1016/j.neures.2011.07.1032] [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: 10/17/2022]
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Iketani M, Kurihara Y, Sato Y, Ito H, Nishiyama K, Goshima Y, Takei K. Physiological roles of LOTUS, an endogenous Nogo receptor antagonist, in lateral olfactory tract formation. Neurosci Res 2011. [DOI: 10.1016/j.neures.2011.07.1463] [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: 12/01/2022]
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Sato Y, Iketani M, Kurihara Y, Yamaguchi M, Yamashita N, Nakamura F, Arie Y, Kawasaki T, Hirata T, Abe T, Kiyonari H, Strittmatter SM, Goshima Y, Takei K. Cartilage acidic protein-1B (LOTUS), an endogenous Nogo receptor antagonist for axon tract formation. Science 2011; 333:769-73. [PMID: 21817055 DOI: 10.1126/science.1204144] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Neural circuitry formation depends on the molecular control of axonal projection during development. By screening with fluorophore-assisted light inactivation in the developing mouse brain, we identified cartilage acidic protein-1B as a key molecule for lateral olfactory tract (LOT) formation and named it LOT usher substance (LOTUS). We further identified Nogo receptor-1 (NgR1) as a LOTUS-binding protein. NgR1 is a receptor of myelin-derived axon growth inhibitors, such as Nogo, which prevent neural regeneration in the adult. LOTUS suppressed Nogo-NgR1 binding and Nogo-induced growth cone collapse. A defasciculated LOT was present in lotus-deficient mice but not in mice lacking both lotus- and ngr1. These findings suggest that endogenous antagonism of NgR1 by LOTUS is crucial for normal LOT formation.
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Affiliation(s)
- Yasufumi Sato
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Yokohama 236-0004, Japan
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Iketani M, Kurihara Y, Sato Y, Goshima Y, Takei K. LOTUS, a novel axon guidance molecule, functions as an endogenous Nogo antagonist. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.124] [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: 10/19/2022]
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Iketani M, Imaizumi C, Nakamura F, Jeromin A, Mikoshiba K, Goshima Y, Takei K. Regulation of neurite outgrowth mediated by neuronal calcium sensor-1 and inositol 1,4,5-trisphosphate receptor in nerve growth cones. Neuroscience 2009; 161:743-52. [PMID: 19368896 DOI: 10.1016/j.neuroscience.2009.04.019] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Revised: 04/06/2009] [Accepted: 04/06/2009] [Indexed: 11/26/2022]
Abstract
Calcium acts as an important second messenger in the intracellular signal pathways in a variety of cell functions. Strictly controlled intracellular calcium is required for proper neurite outgrowth of developing neurons. However, the molecular mechanisms of this process are still largely unknown. Neuronal calcium sensor-1 (NCS-1) is a high-affinity and low-capacity calcium binding protein, which is specifically expressed in the nervous system. NCS-1 was distributed throughout the entire region of growth cones located at a distal tip of neurite in cultured chick dorsal root ganglion neurons. In the central domain of the growth cone, however, NCS-1 was distributed in a clustered specific pattern and co-localized with the type 1 inositol 1,4,5-trisphosphate receptor (InsP(3)R1). The pharmacological inhibition of InsP(3) receptors decreased the clustered specific distribution of NCS-1 in the growth cones and inhibited neurite outgrowth but did not change the growth cone morphology. The acute and localized loss of NCS-1 function in the growth cone induced by chromophore-assisted laser inactivation (CALI) resulted in the growth arrest of neurites and lamellipodial and filopodial retractions. These findings suggest that NCS-1 is involved in the regulation of both neurite outgrowth and growth cone morphology. In addition, NCS-1 is functionally linked to InsP(3)R1, which may play an important role in the regulation of neurite outgrowth.
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Affiliation(s)
- M Iketani
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Sato Y, Yamaguchi M, Iketani M, Arie Y, Kurihara Y, Nakamura F, Kawasaki T, Hirata T, Goshima Y, Takei K. LOTUS, a novel axon guidance molecule. Neurosci Res 2009. [DOI: 10.1016/j.neures.2009.09.396] [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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Kurihara Y, Arie Y, Yamaguchi M, Iketani M, Nakamura F, Mizuki N, Goshima Y, Takei K. Promotion of neurite outgrowth by a novel axon guidance molecule LOTUS. Neurosci Res 2009. [DOI: 10.1016/j.neures.2009.09.398] [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: 10/20/2022]
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Iketani M, Yamaguchi M, Arie Y, Kurihara Y, Sato Y, Goshima Y, Takei K. LOTUS, a novel axon guidance molecule, functions as a negative regulator of Nogo signaling in LOT formation. Neurosci Res 2009. [DOI: 10.1016/j.neures.2009.09.397] [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: 10/20/2022]
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19
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Arie Y, Iketani M, Takamatsu K, Mikoshiba K, Goshima Y, Takei K. Developmental changes in the regulation of calcium-dependent neurite outgrowth. Biochem Biophys Res Commun 2009; 379:11-5. [DOI: 10.1016/j.bbrc.2008.11.128] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2008] [Accepted: 11/23/2008] [Indexed: 10/21/2022]
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20
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Iizuka A, Sengoku K, Iketani M, Nakamura F, Sato Y, Matsushita M, Nairn AC, Takamatsu K, Goshima Y, Takei K. Calcium-induced synergistic inhibition of a translational factor eEF2 in nerve growth cones. Biochem Biophys Res Commun 2007; 353:244-50. [PMID: 17187762 DOI: 10.1016/j.bbrc.2006.11.150] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2006] [Accepted: 11/29/2006] [Indexed: 10/23/2022]
Abstract
Local protein synthesis in nerve growth cones has been suggested, but how it is controlled remains largely unknown. We found eukaryotic elongation factor-2 (eEF2), a key component of mRNA translation, in growth cones by immunocytochemistry. While phosphorylated eEF2 was weakly distributed in advancing growth cones, eEF2 phosphorylation was increased by high potassium-evoked calcium influx. In the growth cone, calcium elevation increased eEF2 kinase (EF2K), a calcim-calmodulin-dependent enzyme. Calcium also decreased the level of phosphorylated p70-S6 kinase (S6K), a kinase known to inhibit EF2K. Moreover, calcium elevation decreased total eEF2 in growth cones. Since phosphorylated eEF2 inhibits mRNA translation, calcium elevation appears to inhibit mRNA translation in growth cones by a synergistic mechanism involving regulation of EF2K, S6K, and eEF2 itself. Time-lapse imaging showed that calcium elevation induced growth arrest of neurites. The inhibitory effect on mRNA translation may thus be involved in the regulation of neurite outgrowth.
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Affiliation(s)
- Akira Iizuka
- Department of Molecular Pharmacology and Neurobiology, Yokohama City University Graduate School of Medicine, Fuku-ura 3-9, Kanazawa Ward, Yokohama 236-0004, Japan
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21
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Iizuka A, Iketani M, Sengoku K, Nakamura F, Matsushita M, Nairn A, Goshima Y, Takei K. Calcium dependent-regulation of neurite outgrowth mediated by a protein translational factor eEF2 within nerve growth cones. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.924] [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: 10/23/2022]
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22
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Yamaguchi M, Sato Y, Iketani M, Nakamura F, Goshima Y, Takei K. Simple, easy and long-term protein ablation method: An application of fluorophore-assisted light inactivation to cell. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.595] [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: 11/30/2022]
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23
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Iketani M, Imaizumi C, Jeromin A, Nakamura F, Mikoshiba K, Goshima Y, Takei K. Neuronal calcium sensor-1 in nerve growth cones independently regulates both the neurite outgrowth and growth cone morphology. Neurosci Res 2007. [DOI: 10.1016/j.neures.2007.06.925] [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: 11/27/2022]
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24
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Arai K, Kim K, Kaneko K, Iketani M, Otagiri A, Yamauchi N, Shibasaki T. Nicotine infusion alters leptin and uncoupling protein 1 mRNA expression in adipose tissues of rats. Am J Physiol Endocrinol Metab 2001; 280:E867-76. [PMID: 11350768 DOI: 10.1152/ajpendo.2001.280.6.e867] [Citation(s) in RCA: 33] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We attempted to clarify whether leptin and uncoupling protein 1 (UCP1) are involved in the action of nicotine on the energy balance. Male Wistar rats were infused subcutaneously with nicotine (12 mg x kg(-1) x day(-1)) for 4 or 14 days. At the end of the 4-day period, the plasma concentrations of leptin of the nicotine-treated and pair-fed rats were lower than those of the freely fed rats, although the levels of leptin mRNA expression in various white adipose tissues did not differ among the three groups. At the end of the 14-day nicotine infusion period, plasma concentrations of leptin were higher, and leptin mRNA expression in the omentum and epididymal and retroperitoneal adipose tissues was stronger in the nicotine-treated rats than in the pair-fed and freely fed rats. UCP1 mRNA expression in the brown adipose tissue of nicotine-treated was stronger than that of the pair-fed rats. These results suggest that continuous nicotine infusion differentially affects the synthesis and secretion of leptin according to the duration of infusion and stimulates UCP1 mRNA expression, probably in a manner independent of leptin.
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Affiliation(s)
- K Arai
- Department of Physiology, Nippon Medical School, Tokyo 113-8602, Japan. Arai_Keiko/
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25
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Iketani M, Nishimura H, Akayama K, Yamano Y, Morishima I. Minimum structure of peptidoglycan required for induction of antibacterial protein synthesis in the silkworm, Bombyx mori. Insect Biochem Mol Biol 1999; 29:19-24. [PMID: 10070741 DOI: 10.1016/s0965-1748(98)00099-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Various peptidoglycan fragments, different in mode of cross-linking and molecular size, were isolated, and the elicitor activity was tested for induction of antibacterial protein synthesis in larvae of Bombyx mori. Linear uncross-linked peptidoglycans from Bacillus licheniformis and Micrococcus luteus were effective elicitors, similar to the directly cross-linked peptidoglycan from B. licheniformis cell wall. The fragments of uncross-linked peptidoglycan with a sugar chain length of four or more were active elicitors, but the disaccharide unit had no elicitor activity. The minimum structure of peptidoglycan required for induction of antibacterial protein synthesis was determined to be two repeating N-acetylglucosamine-N-acetylmuramic acid units with peptide side chains.
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Affiliation(s)
- M Iketani
- Department of Biochemistry and Biotechnology, Faculty of Agriculture, Tottori University, Japan
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26
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Ishida S, Iketani M, Yamazaki S, Tamura K, Shindo Y, Iwakura K, Sumi N. [A 4-week intravenous toxicity study of the active metabolite (NM394) of prulifloxacin (NM441) in rats followed by a 4-week recovery test]. J Toxicol Sci 1996; 21 Suppl 1:131-48. [PMID: 8709157 DOI: 10.2131/jts.21.supplementi_131] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A repeated dose toxicity study of ( +/- )-6- fluoro-1-methyl-4-oxo-7-(1-piperazinyl)-4H- [1,3]thiazeto[3,2-a]quinoline-3-carboxylic acid (NM394), the active metabolite of a new antibacterial agent, prulifloxacin, was conducted in Sprague-Dawley rats. Male and female rats were given the test material intravenously for 4 weeks at doses of 0 (control), 3, 10 and 30 mg/kg. After discontinuation of the treatment, a 4-week recovery test was also conducted. There were no treatment-related effects on survival, clinical signs, body weight and food consumption. Ophthalmoscopic and hematologic examinations failed to show any abnormalities related to the treatment. Increased water consumption was observed in the 10 and 30 mg/kg groups. In these dose groups, increased urine volume and lowered urine specific gravity, and crystalline substance and small epithelial cells in urinary sediments were seen. Cloudy urine was also seen in the 30 mg/kg group. Blood chemical examination showed decreased gamma-globulin in the 10 and 30 mg/kg groups and increased BUN and creatinine in the 30 mg/kg group. Pathological changes caused by the treatment were as follows. In kidney, tubular nephrosis with crystalline substance was observed in the 10 and 30 mg/kg groups and its organ weight was increased in the 30 mg/kg group. Cecal weight was increased in the 30 mg/kg group. The above-mentioned changes were reversible except for decreased gamma-globulin. Plasma levels and urinary concentrations of the test material were increased in all dose groups with dose-related manner, whereby no sex differences were observed. No effects caused by the repeated dosing were seen in the plasma concentrations. Toxicological findings were not observed in the 3 mg/kg group. The results show that the NOAEL of NM394 is 3 mg/kg for 4-week repeated dose toxicity in rats.
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Affiliation(s)
- S Ishida
- Gotemba Laboratory, Bozo Research Center Inc., Shizuoka, Japan
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27
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Morishima I, Horiba T, Iketani M, Nishioka E, Yamano Y. Parallel induction of cecropin and lysozyme in larvae of the silkworm, Bombyx mori. Dev Comp Immunol 1995; 19:357-363. [PMID: 8654663 DOI: 10.1016/0145-305x(95)00019-p] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Lysozyme activity in the hemolymph of Bombyx mori increased in parallel with cecropin activity after injection of the larvae with soluble peptidoglycan or UV-killed bacteria. The lysozyme and cecropin A genes were expressed in parallel in the fat body after injection of peptidoglycan as detected by northern blot hybridization. The elicitor specificity for lysozyme induction was identical to that for cecropin, suggesting a common mechanism for recognition of bacteria and following signal transduction introducing to the simultaneous synthesis of cecropin and lysozyme. Bacterial cells killed by UV-irradiation were also effective as elicitor when added to the fat body culture, suggesting that phagocytosis of bacteria by hemocytes may not be an essential process for the induction of antibacterial protein synthesis in the silkworm.
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Affiliation(s)
- I Morishima
- Laboratory of Metabolic Biochemistry, Tottori University, Japan
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28
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Satoh Y, Ohyama T, Itoh S, Sakurai H, Kobayashi E, Ohki K, Nishiyama M, Iketani M, Shiina Y. Study on the castability of Co-Cr alloy for cast plates. Part 4. Effects of sectional area, number of sprues and alloy components on castability. J Nihon Univ Sch Dent 1994; 36:40-47. [PMID: 8207503 DOI: 10.2334/josnusd1959.36.40] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Co-Cr alloy is used more frequently than Ni-Cr alloy as a nonprecious alloy for cast plates in Japan. Titanium with good biocompatibility has often been contained in the composition of this Co-Cr alloy. However, since the melting temperature of Co-Cr alloy is very high, about 1300 degrees C, and it oxidizes easily, a vacuum-pressure casting machine capable of melting this alloy in a reduced atmosphere has recently been developed. In this study, using the vacuum-pressure casting machine, the possible effects of sectional area and the number of sprues attached to the cast plate wax pattern, as well as the alloy components, on the castability of three kinds of Co-Cr alloy containing titanium were examined. It was found that all of these parameters had significant effects on Co-Cr alloy castability.
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Affiliation(s)
- Y Satoh
- Department of Removable Partial Denture Prosthodontics, Nihon University School of Dentistry, Tokyo, Japan
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29
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Iketani M, Morishima I. Induction of antibacterial protein synthesis by soluble peptidoglycan in isolated fat body from larvae of the silkworm, Bombyx mori. Insect Biochem Mol Biol 1993; 23:913-917. [PMID: 8220389 DOI: 10.1016/0965-1748(93)90108-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Synthesis and secretion of bactericidal protein (cecropin) and lysozyme were induced by soluble peptidoglycan fragments (SPG) from Escherichia coli in a culture of fat body from Bombyx mori larvae. The rate of the secretion by fat body increased as a function of SPG concentration added to the culture medium. The induction of bactericidal activity was specific for peptidoglycan of a particular structure. Thus, SPG from Micrococcus luteus was 500-times less potent than E. coli SPG, and various glucans and peptides structurally related to peptidoglycan were all ineffective as elicitor. These results support the hypothesis that bacteria invading the haemocoel have to be partially degraded to generate peptidoglycan fragments as a signal molecule, which subsequently acts on a receptor on fat body cells and induces antibacterial protein synthesis.
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Affiliation(s)
- M Iketani
- Laboratory of Metabolic Biochemistry, Faculty of Agriculture, Tottori University, Japan
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30
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Kato A, Kimura M, Fujigaki Y, Arai T, Iketani M, Hishida A, Honda N. [A case of IGA nephropathy complicated with membranous nephropathy]. Nihon Naika Gakkai Zasshi 1991; 80:272-3. [PMID: 1865149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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31
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Nobuhara M, Kanamori T, Ashida Y, Ogino H, Horisawa Y, Nakayama K, Asami T, Iketani M, Noda K, Andoh S. The inhibition of neoplastic cell proliferation with human natural tumor necrosis factor. Jpn J Cancer Res 1987; 78:193-201. [PMID: 3030986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Purified human natural tumor necrosis factor (n-TNF) was prepared by stimulating human leukemic B cell line (BALL-1) with Sendai virus. The colony formations of all of 18 human cancer-derived abnormal cell lines were suppressed by 10(1)-10(6) U/ml of n-TNF, while n-TNF was nontoxic to all human normal fibroblast cells. This in vitro inhibition of cell growth was reversible. In breast adenocarcinoma MCF7 cells treated with n-TNF a specific decrease of DNA synthesis was observed, and DNA histograms showed a block at G1 in the cell cycle. In vivo studies revealed that n-TNF suppressed the tumor growth of murine Meth A sarcoma, human renal adenocarcinoma (ACHN), malignant melanoma (SK-MEL-28) and glioblastoma (U-373 MG). Isobologram analysis showed that n-TNF synergistically inhibited cell growth in combination with human natural interferon (IFN)-a. In vivo synergism of n-TNF and IFN-a was also found in the U-373 MG tumor model implanted into nude mice.
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32
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Usami F, Iketani M, Hirukawa M, Fujikura K, Furuya M, Kikuchi T. Treatment of congenital pseudoarthrosis of the tibia by a free vascularized fibular graft: case report. J Microsurg 1981; 3:40-7. [PMID: 7341733 DOI: 10.1002/micr.1920030110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A free vascularized fibular graft was used to treat a case of congenital pseudoarthrosis of the tibia in a 5-year-old girl. Four weeks after the surgery, x-ray films revealed remarkable callus formation at the proximal junction of the graft and tibia. Seventeen months passed before union at this junction was completed. Union at the distal junction, on the other hand, took only 12 weeks. It was noted that the fibular graft enlarged in diameter rapidly, and at 17 months was the same size as the recipient tibia.
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33
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Iketani M. [Initial treatment of hand injuries]. Kango Gijutsu 1977; 23:37-43. [PMID: 587776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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34
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Ito T, Iketani M, Hata M, Takita T, Hirukawa M. [Follow-up study of long standing pseudoarthrosis of the navicular bone of the hand]. Seikei Geka 1971; 22:945-8. [PMID: 5169897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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35
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Iketani M. [Fractures of the carpal navicular bone, with special reference to clinical considerations on clinical aspects and analysis of the mechanism of fractures]. Nihon Ika Daigaku Zasshi 1971; 38:9-20. [PMID: 5555052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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36
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Ito T, Iketani M, Ichiseki H, Maeda Y. [Therapy of injuries of the carpo-metacarpal joint of the thumb]. Seikei Geka 1970; 21:905-7. [PMID: 5528881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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37
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Ito T, Iketani M, Fukuhara T, Kimura S, Hirukawa M. [Clinical findings of pseudoarthrosis of the navicular bone of the hand]. Seikei Geka 1969; 20:1468-72. [PMID: 5393168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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38
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Ito T, Iketani M, Ishii K. [Mechanism of the navicular fractures]. Seikei Geka 1967; 18:341-3. [PMID: 6071054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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