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Asada K, Aihara Y, Takaya H, Noguchi R, Namisaki T, Moriya K, Uejima M, Kitade M, Mashitani T, Takeda K, Kawaratani H, Okura Y, Kaji K, Douhara A, Sawada Y, Nishimura N, Seki K, Mitoro A, Yamao J, Yoshiji H. DNA methylation of angiotensin II receptor gene in nonalcoholic steatohepatitis-related liver fibrosis. World J Hepatol 2016; 8:1194-1199. [PMID: 27729955 PMCID: PMC5055588 DOI: 10.4254/wjh.v8.i28.1194] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/08/2016] [Accepted: 08/29/2016] [Indexed: 02/06/2023] Open
Abstract
AIM To clarify whether Agtr1a methylation is involved in the development of nonalcoholic steatohepatitis (NASH)-related liver fibrosis in adult rats.
METHODS A choline-deficient amino acid (CDAA) diet model was employed for methylation analysis of NASH-related liver fibrosis. Agtr1a methylation levels were measured in the livers of CDAA- and control choline-sufficient amino acid (CSAA)-fed rats for 8 and 12 wk using quantitative methylation-specific PCR. Hepatic stellate cells (HSCs) were isolated by collagenase digestion of the liver, followed by centrifugation of the crude cell suspension through a density gradient. Agtr1a methylation and its gene expression were also analyzed during the activation of HSCs.
RESULTS The mean levels of Agtr1a methylation in the livers of CDAA-fed rats (11.5% and 18.6% at 8 and 12 wk, respectively) tended to be higher (P = 0.06 and 0.09, respectively) than those in the livers of CSAA-fed rats (2.1% and 5.3% at 8 and 12 wk, respectively). Agtr1a was not methylated at all in quiescent HSCs, but was clearly methylated in activated HSCs (13.8%, P < 0.01). Interestingly, although Agtr1a was hypermethylated, the Agtr1a mRNA level increased up to 2.2-fold (P < 0.05) in activated HSCs compared with that in quiescent HSCs, suggesting that Agtr1a methylation did not silence its expression but instead had the potential to upregulate its expression. These findings indicate that Agtr1a methylation and its upregulation of gene expression are associated with the development of NASH-related liver fibrosis.
CONCLUSION This is the first study to show that DNA methylation is potentially involved in the regulation of a renin-angiotensin system-related gene expression during liver fibrosis.
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Namisaki T, Noguchi R, Moriya K, Kitade M, Aihara Y, Douhara A, Nishimura N, Takeda K, Okura Y, Kawaratani H, Takaya H, Seki K, Yoshiji H. Beneficial effects of combined ursodeoxycholic acid and angiotensin-II type 1 receptor blocker on hepatic fibrogenesis in a rat model of nonalcoholic steatohepatitis. J Gastroenterol 2016; 51:162-72. [PMID: 26190501 DOI: 10.1007/s00535-015-1104-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 07/05/2015] [Indexed: 02/04/2023]
Abstract
BACKGROUND AND AIMS Ursodeoxycholic acid (UDCA) is considered to be effective in the treatment of nonalcoholic steatohepatitis (NASH), particularly in combination with other pharmacological agents. UDCA reportedly counteracts the effects of endotoxemia. Previously, we demonstrated attenuated hepatic fibrogenesis and suppression of activated hepatic stellate cells (Ac-HSC) with an angiotensin-II (AT-II) type 1 receptor blocker (ARB). Here we evaluated the simultaneous effect of both agents on hepatic fibrogenesis in a rat model of NASH. METHODS Fischer 344 rats were fed a choline-deficient L-amino-acid-defined (CDAA) diet for 8 weeks. The therapeutic effect of UDCA and ARB was evaluated along with hepatic fibrogenesis, lipopolysaccharide (LPS)-Toll-like receptor 4 (TLR4) regulatory cascade, and intestinal barrier function. The direct inhibitory effect of both UDCA and ARB on Ac-HSC was assessed in vitro. RESULTS Both UDCA and ARB had a potent inhibitory effect on hepatic fibrogenesis with suppression of the HSC activation and hepatic expression of transforming growth factor (TGF)-β1 and TLR4. UDCA decreased intestinal permeability by ameliorating zonula occuludens-1 (ZO-1) disruption induced by the CDAA diet. ARB was found to directly suppress regulation of Ac-HSC. CONCLUSIONS UDCA and ARB have a synergistic repressive effect on hepatic fibrogenesis by counteracting endotoxemia induced by intestinal barrier dysfunction and suppressing the activation of Ac-HSC. Because both agents are currently used in clinical practice, combined UDCA and ARB may represent a promising novel therapeutic approach for NASH.
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Kotaki T, Nishimura N, Ozawa M, Fujimori A, Muraoka H, Ogawa S, Korenaga T, Suzuki E, Oishi Y, Shibasaki Y. Synthesis of highly refractive and highly fluorescent rigid cyanuryl polyimines with polycyclic aromatic hydrocarbon pendants. Polym Chem 2016. [DOI: 10.1039/c5py01920f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of rigid cyanuryl polyimines, polyguanamines (PGs) bearing polycyclic aromatic hydrocarbon pendants were successfully synthesized from 2-substituted 4,6-dichloro-1,3,5-triazine and aromatic diamine monomers.
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Inukai Y, Iwase S, Nishimura N, Shimizu Y, Sato M, Onizuka C, Sugenoya J, Sato M. Hemifacial hyperhidrosis develops compensatory to the anhidrotic area caused by cervical disk herniation or cervical spondylosis. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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80
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Sato M, Kanikowska D, Iwase S, Shimizu Y, Nishimura N, Inukai Y, Sato M, Sugenoya J. Seasonal differences in saliva melatonin concentrations and heart rate variability during sleep in obese men. Auton Neurosci 2015. [DOI: 10.1016/j.autneu.2015.07.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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81
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Ohno H, Nishimura N, Yamada K, Shimizu Y, Nishimura R, Iwase S, Sugenoya J, Sato M. Water nanodroplets emitted from an air conditioner increased skin moisture levels at the lateral canthus in winter by forming a lipid film with sebum. Skin Res Technol 2015; 22:388-90. [PMID: 26343808 DOI: 10.1111/srt.12262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2015] [Indexed: 11/28/2022]
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82
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Hashimoto O, Yoshida M, Koma Y, Yanai T, Hasegawa D, Kosaka Y, Nishimura N, Yokozaki H. 169 Contribution of cancer-associated fibroblasts and M2-polarized macrophages to neuroblastoma development. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30066-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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83
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Nishimura N, Terui Y, Inoue N, Takahashi A, Tsuyama N, Gunji M, Nitta H, Ueda K, Mishima Y, Yokoyama M, Takeuchi K, Terui Y, Hatake K. Multiple myeloma as a second primary malignancy; one fourth of patients had prior history of other malignances. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2015. [DOI: 10.1016/j.clml.2015.07.292] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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84
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Santisakultarm TP, Paduano CQ, Stokol T, Southard TL, Nishimura N, Skoda RC, Olbricht WL, Schafer AI, Silver RT, Schaffer CB. Stalled cerebral capillary blood flow in mouse models of essential thrombocythemia and polycythemia vera revealed by in vivo two-photon imaging. J Thromb Haemost 2014; 12:2120-30. [PMID: 25263265 DOI: 10.1111/jth.12738] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2014] [Indexed: 02/01/2023]
Abstract
BACKGROUND Essential thrombocythemia (ET) and polycythemia vera (PV) are myeloproliferative neoplasms (MPNs) that share the JAK2(V617F) mutation in hematopoietic stem cells, leading to excessive production of predominantly platelets in ET, and predominantly red blood cells (RBCs) in PV. The major cause of morbidity and mortality in PV and ET is thrombosis, including cerebrovascular occlusive disease. OBJECTIVES To identify the effect of excessive blood cells on cerebral microcirculation in ET and PV. METHODS We used two-photon excited fluorescence microscopy to examine cerebral blood flow in transgenic mouse models that mimic MPNs. RESULTS AND CONCLUSIONS We found that flow was 'stalled' in an elevated fraction of brain capillaries in ET (18%), PV (27%), mixed MPN (14%) and secondary (non-MPN) erythrocytosis (27%) mice, as compared with controls (3%). The fraction of capillaries with stalled flow increased when the hematocrit value exceeded 55% in PV mice, and the majority of stalled vessels contained only stationary RBCs. In contrast, the majority of stalls in ET mice were caused by platelet aggregates. Stalls had a median persistence time of 0.5 and 1 h in ET and PV mice, respectively. Our findings shed new light on potential mechanisms of neurological problems in patients with MPNs.
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Douhara A, Moriya K, Yoshiji H, Noguchi R, Namisaki T, Kitade M, Kaji K, Aihara Y, Nishimura N, Takeda K, Okura Y, Kawaratani H, Fukui H. Reduction of endotoxin attenuates liver fibrosis through suppression of hepatic stellate cell activation and remission of intestinal permeability in a rat non-alcoholic steatohepatitis model. Mol Med Rep 2014; 11:1693-700. [PMID: 25421042 PMCID: PMC4270343 DOI: 10.3892/mmr.2014.2995] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 11/05/2014] [Indexed: 02/07/2023] Open
Abstract
Previous clinical studies have demonstrated that endotoxin/toll‑like receptor 4 (TLR4) signaling is critical in the inflammatory pathways associated with non‑alcoholic steatohepatitis (NASH). In human and animal studies, NASH was associated with portal lipopolysaccharide (LPS) and the plasma LPS level was hypothesized to be associated with small intestinal bacterial overgrowth, change in composition of the microbiota and increased intestinal permeability. The aim of the present study was to investigate the roles of endogenous endotoxin and TLR4 in the pathogenesis of NASH. The effects of antibiotics were assessed in vivo using a choline deficiency amino acid (CDAA)‑induced experimental liver fibrosis model. Antibiotics, including polymyxins and neomycins, were orally administered in drinking water. Antibiotics attenuated hepatic stellate cell (HSC) activation and liver fibrosis via TGF‑β and collagen in an experimental hepatic fibrosis model. The mechanism by which antibiotics attenuated LPS‑TLR4 signaling and liver fibrosis was assessed. Notably, TLR4 mRNA level in the liver was elevated in the CDAA group and the CDAA‑induced increase was significantly reduced by antibiotics. However, no significant differences were observed in the intestine among all groups. Elevated mRNA levels of LPS binding protein, which was correlated with serum endotoxin levels, were recognized in the CDAA group and the CDAA‑induced increase was significantly reduced by antibiotics. The intestinal permeability of the CDAA group was increased compared with the choline‑supplemented amino acid group. The tight junction protein (TJP) in the intestine, determined by immunohistochemical analysis was inversely associated with intestinal permeability. Antibiotics improved the intestinal permeability and enhanced TJP expression. Inhibition of LPS‑TLR4 signaling with antibiotics attenuated liver fibrosis development associated with NASH via the inhibition of HSC activation. These results indicated that reduction of LPS and restoration of intestinal TJP may be a novel therapeutic strategy for treatment of liver fibrosis development in NASH.
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Yoshiji H, Noguchi R, Namisaki T, Moriya K, Kitade M, Aihara Y, Douhara A, Kawaratani H, Nishimura N, Fukui H. Combination of sorafenib and angiotensin-II receptor blocker attenuates preneoplastic lesion development in a non-diabetic rat model of steatohepatitis. J Gastroenterol 2014; 49:1421-9. [PMID: 24197250 DOI: 10.1007/s00535-013-0906-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 10/21/2013] [Indexed: 02/04/2023]
Abstract
BACKGROUND Given the well-documented adverse side effects of sorafenib, many sorafenib-treated patients may need the reduced initial dose of the compound, and an alternative sorafenib-based therapy, which exerts similar clinical benefit, is anticipated. An angiostatic therapy with sorafenib is considered one of the promising approaches for chemoprevention of hepatocellular carcinoma. The aim of the current study was to elucidate the combination effect of low dose of sorafenib and angiotensin-II receptor blocker (ARB) on hepatocarcinogenesis, especially in conjunction with angiogenesis. METHODS The chemopreventive effect on the development of liver preneoplastic lesions, angiogenesis, and several indices was elucidated in rats. We also performed several sets of in vitro experiments to examine the mechanisms involved. RESULTS Using a non-diabetic rat model of steatohepatitis with choline deficient L-amino acid-defined diet, sorafenib demonstrated marked inhibition of preneoplastic lesions in a dose dependent manner. Combined treatment with ARB (losartan) at a clinically comparable dose and half dose of sorafenib resulted in the inhibitory effect equivalent to that of common dose of sorafenib along with suppression of hepatic neovascularization and potent angiogenic factor, vascular endothelial growth factor. Furthermore, similar combined inhibitory outcomes were observed in several sets of in vitro studies. CONCLUSION Since the combinatorial treatment using low doses of sorafenib and ARB could sufficiently induce inhibitory effect on the development of preneoplastic lesions at the magnitude similar to the conventional dose of sorafenib, this regimen may provide new strategy for patients intolerant of the usual dose of sorafenib in the future.
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Ohno H, Nishimura N, Yamada K, Shimizu Y, Nishimura R, Iwase S, Sugenoya J, Sato M. Water nanodroplets make a greater contribution to facial skin moisture levels in air-conditioned rooms during winter than in summer. Skin Res Technol 2014; 21:207-13. [DOI: 10.1111/srt.12178] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/16/2014] [Indexed: 11/28/2022]
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88
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Ohshima Y, Yanagishita T, Ito K, Tamada Y, Nishimura N, Inukai Y, Iwase S, Watanabe D. A case of acquired idiopathic generalized anhidrosis in a 2-year-old infant. J Eur Acad Dermatol Venereol 2014; 29:1446-8. [PMID: 24698553 DOI: 10.1111/jdv.12499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Revised: 02/06/2014] [Accepted: 03/03/2014] [Indexed: 11/26/2022]
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89
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Ouchi A, Yokoyama M, Takeuchi K, Nitta H, Ueda K, Nishimura N, Tsuyama N, Terui Y, Hatake K. GDP Chemotherapy for Relapsed/Refractory Lymphomas is Effective and Safe. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt460.113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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90
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Nishimura N, Terui Y, Ouchi A, Ueda K, Nitta H, Yokoyama M, Tsuyama N, Takeuchi K, Hatake K. Incidence of Deep Vein Thrombosis (DVE) in Myeloma Patients Treated with Lenalidomide/ Dexamethasone with Prophylaxis. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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91
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Nishimura N, Karino F, Ishihara N, Moriyama H, Miura K, Sutani A, Kuraki T, Ikawa K, Morikawa N, Naora K, Isobe T. P28 Pharmacodynamics, pharmacokinetics of piperacillin/tazobactam in Japanese elderly patients with nursing and healthcare-associated pneumonia. Int J Antimicrob Agents 2013. [DOI: 10.1016/s0924-8579(13)70273-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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92
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Yano T, Hatanaka H, Yamamoto H, Nakazawa K, Nishimura N, Wada S, Tamada K, Sugano K. Intraluminal injection of indigo carmine facilitates identification of the afferent limb during double-balloon ERCP. Endoscopy 2013; 44 Suppl 2 UCTN:E340-1. [PMID: 23012011 DOI: 10.1055/s-0032-1309865] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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93
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Ohshima Y, Yanagishita T, Ito K, Tamada Y, Nishimura N, Inukai Y, Iwase S, Sugenoya J, Watanabe D. Treatment of patients with acquired idiopathic generalized anhidrosis. Br J Dermatol 2012; 168:430-2. [PMID: 22709381 DOI: 10.1111/j.1365-2133.2012.11112.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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94
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Ohhara Y, Nishimura N, Nara E, Nakano K, Ueda K, Sakajiri S, Mishima Y, Yokoyama M, Terui Y, Takahashi S, Hatake K. Docetaxel Plus Cisplatin as First-Line Chemotherapy in Patients with Recurrent or Metastatic Head and Neck Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32354-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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95
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Nakano K, Takahashi S, Nishimura N, Mishima Y, Sakajiri S, Yokoyama M, Terui Y, Motoi N, Hatake K. Number of Involved Organs is Predictive Factor of Response to Cyvadic Chemotherapy for Advanced Soft Tissue Sarcoma Patients. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32372-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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96
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Uomori T, Yokoyama M, Nara E, Nakano K, Ueda K, Nishimura N, Sakajiri S, Mishima Y, Terui Y, Takahashi S. The Efficacy and Safety Analysis of Carbopratin and Paclitaxel Therapy for Patients with Inoperable, Recurrent or Refractory Adenocarcinoma of the Head and Neck. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32353-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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97
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Nishimura N, Yokoyama M, Ohhara Y, Nara E, Nakano K, Ueda K, Mishima Y, Sakajiri S, Terui Y, Takahashi S, Hatake K. TPF Induction Chemotherapy Followed by Cisplatin-Based Concurrent Chemoradiotherapy in Patients with Stage IV Head and Neck Cancer Demonstrated no Benefit. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32352-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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98
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Takemoto S, Pornkuna R, Nishimura N, Inoue Y, Sakai T, Harada N, Nagakura S, Hidaka M, Kiyokawa T, Haga Y, Kawano F. P065 Acute crisis of adult T-cell leukaemia following soluble CD30 elevation: Shedding of CD30 and CD25 from cell surface associated with the aggressiveness. Cytokine 2012. [DOI: 10.1016/j.cyto.2012.06.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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99
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Kuwahara Y, Tsukahara R, Iwase S, Nishimura N, Shimizu Y, Sugenoya J. 11. Relationships between skin sympathetic nerve activities and evoked potentials induced by voluntary or involuntary muscle contractions: Comparison between sudomotor and vasoconstrictor components. Clin Neurophysiol 2012. [DOI: 10.1016/j.clinph.2012.02.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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100
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Nishimura N, Murase K, Ito T, Watanabe T. Ultrasonic detection of spall damage nucleation under low-velocity repeated impact. EPJ WEB OF CONFERENCES 2012. [DOI: 10.1051/epjconf/20122601046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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