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Mito S, Muraoka Y, Fujii Y, Ueda Y, Morita Y, Fujiwara M, Nagamoto Y, Hayashi Y. P1762His-Bundle Potential Inversion Predicts Adequate Placement of His-Bundle Pacing Lead. Europace 2017. [DOI: 10.1093/ehjci/eux161.072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Mito S, Muraoka Y, Fujii Y, Ueda Y, Morita Y, Fujiwara M, Nagamoto Y, Hayashi Y. 1164Early recurrence and long-term results of additional ganglionated plexi ablation for paroxysmal atrial fibrillation. Europace 2017. [DOI: 10.1093/ehjci/eux153.003] [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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Mito S, Muraoka Y, Fujii Y, Ueda Y, Morita Y, Fujiwara M, Nagamoto Y, Hayashi Y. P1460Efficacy of ganglionated plexus ablation in patients with obstructive sleep apnea. Europace 2017. [DOI: 10.1093/ehjci/eux158.087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Morita Y, Kawamoto C, Sato K, Nakajima T, Kanda Y, Shiromizu K. Severe liver injury with hematological disorders following the injection of non-ionic contrast medium: A case report. Acta Radiol 2016; 42:342-4. [PMID: 11350297 DOI: 10.1080/028418501127346765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
We describe a dramatic case of severe liver injury and hematological disorders following the injection of non-ionic contrast medium in a 49-year-old woman with endometrial cancer. This case developed into a fulminant hepatitis-like picture that required repeated plasmapheresis and hemodialysis.
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Terada T, Matsumura M, Abe A, Morita Y, Adachi H, Nanjo H. Irreversible inactivation of glutathione S-transferase-π by a low concentration of naphthoquinones. Redox Rep 2016; 1:125-30. [PMID: 27405555 DOI: 10.1080/13510002.1995.11746970] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
π-Class glutathione S-transferase (GST-π) was very potently inactivated by oxidants such as H2O2, xanthine-xanthine oxidase and naphthoquinones. Thiols and glutathione analogs including dithiothreitol, reduced gluta-thione, cysteine, cysteamine, S-methyl-SG, S-hexyl-SG and S-decyl-SG protected GST-π from the inactivation, but a substrate analog (2,4-dinitrophenol), superoxide dismutase and catalase did not, suggesting that the cysteinyl residue(s) in/nearby the glutathione binding site (G-site) may be oxidatively modified by these oxidants. Many reductants and radical scavengers including butylated hydoxytoluene, α-tocopherol, ascorbate, uric acid, mannitol, tyrosine, tryptophan, histidine, quercitrin and bilirubin had no effect on the inactivation. GST-π pretreated with cystamine was reactivated very efficiently by 50 mM DTT following incubation with 1,2-naphthoquinone, whereas cystamine-untreated GST-π was not reactivated.
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Hirashima M, Fukazawa T, Abe K, Morita Y, Kusaoi M, Hashimoto H. Expression and activity analyses of CTLA4 in peripheral blood lymphocytes in systemic lupus erythematosus patients. Lupus 2016; 13:24-31. [PMID: 14870914 DOI: 10.1191/0961203304lu488oa] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The objective of this study was to determine the expression and activity of CTLA4 in T-cells of systemic lupus erythematosus (SLE) patients. Expression of CTLA4 on freshly isolated peripheral blood T-cells was evaluated in 33 SLE patients and 25 controls using flow cytometry.The T-cells from 19 SLE patients and 22 controls were stimulated and cultured with Chinese hamster ovary cells expressing CD80 (CHO-CD80) or with CHO cells. T-cell proliferation was determined with [3H] thymidine incorporation (CPM), and the inhibitory effect of CTLA4 on T-cell proliferation was evaluated by the ratio of CPM for T-cells with CHO -CD80 cells to that of T-cells with CHO cells (the CHO -CD80/CHO ratio). IntracellularCTLA4 expressionin freshly isolated peripheral blood T-cells was significantly higher in SLE patients than the controls (P < 0.05), but there was no correlation with clinical features or disease activity. The CHO -CD80/CHO ratio of SLE patients was significantly higher than that of the controls(P < 0.05). Among SLE patients, the CHO -CD80/CHO ratio of patients with lupus nephritis was significantly higher than that of patients without lupus nephritis (P < 0.05). In conclusion, our data suggest that CTLA4 expression is not impaired in SLE patients, but there is a possibility of decreased inhibitory effect of CTLA4 involved in the pathogenesis of SLE.
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Wakahara C, Morita Y, Tanaka S, Hoshi N, Kawara F, Kibi M, Ishida T, Man-I M, Fujita T, Toyonaga T. Optimization of steroid injection intervals for prevention of stricture after esophageal endoscopic submucosal dissection: A randomized controlled trial. Acta Gastroenterol Belg 2016; 79:315-320. [PMID: 27821027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Esophageal endoscopic submucosal dissection enables en bloc resection of large superficial esophageal cancer; however, this procedure may induce severe stricture. Intralesional steroid injection is an effective treatment for prevention of stricture after endoscopic resection; however, there have been no studies assessing the duration of such treatment. The aim of this study was to reduce treatment duration and to evaluate the effectiveness of weekly and biweekly steroid injections in preventing esophageal stricture after endoscopic resection. PATIENTS METHOD We performed a randomized controlled trial comparing patients receiving weekly or biweekly intralesional triamcinolone injections. Patients with a mucosal defect greater than 75% (3/4) of the luminal circumference after esophageal endoscopic submucosal dissection for superficial esophageal cancers were enrolled. The primary endpoint was the duration of steroid injection treatment. RESULTS The median duration of treatment was 37.0 days in the weekly group and 34.2 days in the biweekly group (P = 0.059). Among patients with a mucosal defect larger than 50 mm, there was a significant difference in the median duration of treatment between the weekly and biweekly groups (42.5 days vs 29.0 days, P = 0.013). CONCLUSION Biweekly steroid injection of triamcinolone reduces treatment duration, particularly in those with mucosal defects larger than 50 mm. (Acta gastro-enterol. belg., 2016, 79, 315-320).
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Azukizawa M, Ito H, Yasuda T, Furu M, Hamamoto Y, Fujii T, Morita Y, Okahata A, Masamoto K, Matsuda S. SAT0621 Effect of An Exercise Therapy on Systemic Biomarkers for Cartilage Metabolism. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.2219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Takashima S, Nishie W, Morita Y, Osawa R, Iwata H, Fujita Y, Fujimoto K, Shimizu H. Eosinophilic pustular folliculitis in a patient with mycosis fungoides. J Eur Acad Dermatol Venereol 2016; 30:712-3. [DOI: 10.1111/jdv.13009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Fukuda T, Tanaka H, Morita Y, Itonaga T, Seike Y, Minatoya K, Naito H. Endovascular aneurysm sealing using NBCA to control type Ia endoleak for the treatment of abdominal aortic aneurysm with challenging neck. J Vasc Interv Radiol 2016. [DOI: 10.1016/j.jvir.2015.12.531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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Ono T, Isobe T, Morita Y, Do LTK, Tanihara F, Taniguchi M, Takagi M, Otoi T. Effects of parity and season on pregnancy rates after the transfer of embryos to repeat-breeder Japanese Black beef cattle. Arch Anim Breed 2016. [DOI: 10.5194/aab-59-45-2016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Abstract. Repeat-breeder (RB) cows are a major source of economic waste due to their decreased fertility. Embryo transfer (ET) is an alternative tool to improve the fertility of RB cows. The aims of the present study were to evaluate the effects of recipient parity and the season on pregnancy rates following ET in RB Japanese Black beef cattle. Embryos were transferred nonsurgically to recipients, consisting of 155 heifers (< 2 years old) and 172 cows (< 8 years old), which were defined as RB cattle. Of the recipients that were presented for ET, 57 recipients received a fresh embryo and 270 recipients received a frozen embryo. There were no differences in the pregnancy rates between cattle that received fresh embryos or frozen embryos. The rates of recipients with pregnancy, abortion, stillbirth, and normal calving were similar between heifers and cows. In cows, the pregnancy rates were lower (P < 0.05) in summer (June to August) than in spring (March to May) and winter (December to February). In heifers, however, there were no differences in the pregnancy rates among the seasons. Our findings indicate that in RB Japanese Black beef cattle, the parity of the recipients does not have an effect on the pregnancy rates following the transfer of fresh and frozen embryos. However, heat stress may affect reproductive performance in RB Japanese Black cows.
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Ohishi A, Keno Y, Marumiya A, Sudo Y, Uda Y, Matsuda K, Morita Y, Furuta T, Nishida K, Nagasawa K. Expression level of P2X7 receptor is a determinant of ATP-induced death of mouse cultured neurons. Neuroscience 2016; 319:35-45. [PMID: 26812038 DOI: 10.1016/j.neuroscience.2016.01.048] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 01/13/2016] [Accepted: 01/20/2016] [Indexed: 12/11/2022]
Abstract
Activation of P2X7 receptor (P2X7R), a purinergic receptor, expressed by neurons is well-known to induce their death, but whether or not their sensitivity to ATP depends on its expression levels remains unclear. Here, we examined the effect of the expression level of P2X7Rs on cell viability using pure neuron cultures, co-cultures with astrocytes derived from SJL- and ddY-strain mice, and mouse P2X7R-expressing HEK293T cell systems. Treatment of pure neuron cultures with 5mM ATP for 2h, followed by 3-h incubation in fresh medium, resulted in death of both types of neurons, and their death was prevented by administration of P2X7R-specific antagonists. In both SJL- and ddY-neurons, ATP-induced neuronal death was inhibited by a mitochondrial permeability transition pore inhibitor cyclosporine A, mitochondrial dysfunction being involved in their death. The ATP-induced neuronal death was greater for SJL-neurons than for ddY-ones, this being correlated with the expression level of P2X7R in them, and the same results were obtained for the HEK293T cell systems. Co-culture of neurons with astrocytes increased the ATP-induced neuronal death compared to the case of pure neuron cultures. Overall, we reveal that neuronal vulnerability to ATP depends on the expression level of P2X7R, and co-existence of astrocytes exacerbates ATP-induced neuronal death.
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Iwai S, Takeshita A, Kishimoto S, Morita Y, Niki-Yonekawa A, Hamada M, Yura Y. 178 Wnt5b promotes the cell invasion and migration essential to the metastasis of oral squamous cell carcinoma cell through activation of Cdc42 and RhoA. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)30075-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Iwamoto S, Takahashi T, Tamagawa H, Nakamura M, Munemoto Y, Kato T, Hata T, Denda T, Morita Y, Inukai M, Kunieda K, Nagata N, Kurachi K, Ina K, Ooshiro M, Shimoyama T, Baba H, Oba K, Sakamoto J, Mishima H. FOLFIRI plus bevacizumab as second-line therapy in patients with metastatic colorectal cancer after first-line bevacizumab plus oxaliplatin-based therapy: the randomized phase III EAGLE study. Ann Oncol 2015; 26:1427-33. [PMID: 25908603 PMCID: PMC4478977 DOI: 10.1093/annonc/mdv197] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 04/15/2015] [Indexed: 11/13/2022] Open
Abstract
EAGLE was a randomized, multicenter phase III study which evaluated the superiority of bevacizumab 10 mg/kg plus FOLFIRI compared with bevacizumab 5 mg/kg plus FOLFIRI in patients with mCRC previously treated with first-line bevacizumab plus an oxaliplatin-based regimen. The results suggest that the higher 10 mg/kg dose offers no clear clinical benefit compared with bevacizumab 5 mg/kg in this setting. Background A targeted agent combined with chemotherapy is the standard treatment in patients with metastatic colorectal cancer (mCRC). The present phase III study was conducted to compare two doses of bevacizumab combined with irinotecan, 5-fluorouracil/leucovorin (FOLFIRI) in the second-line setting after first-line therapy with bevacizumab plus oxaliplatin-based therapy. Patients and methods Patients were randomly assigned to receive FOLFIRI plus bevacizumab 5 or 10 mg/kg in 2-week cycles until disease progression. The primary end point was progression-free survival (PFS), and secondary end points included overall survival (OS), time to treatment failure (TTF), and safety. Results Three hundred and eighty-seven patients were randomized between September 2009 and January 2012 from 100 institutions in Japan. Baseline patient characteristics were well balanced between the two groups. Efficacy was evaluated in 369 patients (5 mg/kg, n = 181 and 10 mg/kg, n = 188). Safety was evaluated in 365 patients (5 mg/kg, n = 180 and 10 mg/kg, n = 185). The median PFS was 6.1 versus 6.4 months (hazard ratio, 0.95; 95% confidence interval [CI] 0.75–1.21; P = 0.676), and median TTF was 5.2 versus 5.2 months (hazard ratio, 1.01; 95% CI 0.81–1.25; P = 0.967), respectively, for the bevacizumab 5 and 10 mg/kg groups. Follow-up of OS is currently ongoing. Adverse events, including hypertension and hemorrhage, occurred at similar rates in both groups. Conclusion Bevacizumab 10 mg/kg plus FOLFIRI as the second-line treatment did not prolong PFS compared with bevacizumab 5 mg/kg plus FOLFIRI in patients with mCRC. If bevacizumab is continued after first-line therapy in mCRC, a dose of 5 mg/kg is appropriate for use as second-line treatment. Clinical trial identifier UMIN000002557.
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Munemoto Y, Iwamoto S, Takahashi T, Tamagawa H, Nakamura M, Kato T, Hata T, Denda T, Morita Y, Inukai M, Kunieda K, Nagata N, Kurachi K, Ina K, Oshiro M, Shimoyama T, Baba H, Oba K, Sakamoto J, Mishima H. A Phase III Study of Eagle Comparing Two Doses of Bevacizumab Combined with Folfiri in the Second-Line Setting After First-Line Treatment with Bevacizumab Plus Oxaliplatin-Based Therapy : Kras Subgroup Findings. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu333.28] [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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Sakurai M, Kunimoto H, Watanabe N, Fukuchi Y, Yuasa S, Yamazaki S, Nishimura T, Sadahira K, Fukuda K, Okano H, Nakauchi H, Morita Y, Matsumura I, Kudo K, Ito E, Ebihara Y, Tsuji K, Harada Y, Harada H, Okamoto S, Nakajima H. Impaired hematopoietic differentiation of RUNX1-mutated induced pluripotent stem cells derived from FPD/AML patients. Leukemia 2014; 28:2344-54. [DOI: 10.1038/leu.2014.136] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Revised: 03/30/2014] [Accepted: 04/09/2014] [Indexed: 01/10/2023]
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Nishimura D, Fukuda M, Sakai T, Tanaka M, Abe K, Chiba J, Fukuda S, Furuki H, Homma A, Hotaka H, Ichihashi N, Inaba N, Iwamoto K, Izumikawa T, Kamisho Y, Kanbe K, Kikukawa N, Kitagawa A, Kouno J, Nagashima M, Nakamura Y, Nishizuka I, Matsuta K, Mihara M, Miyazawa S, Morita Y, Ono J, Ohtsubo T, Sato K, Sato S, Sera D, Suzuki S, Suzuki S, Suzuki T, Takechi M, Tashiro K, Wakabayashi M, Watanabe D, Yaguchi M, Yamaguchi T, Yamaki S, Yasumoto S, Yoshinaga K, Zhu Y. First observation of an isomeric state in proton drip-line nucleus26P. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146602072] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Yamazaki S, Morio H, Inami M, Ito M, Fujii Y, Hanaoka K, Yamagami K, Okuma K, Morita Y, Shirakami S, Inoue T, Miyata S, Higashi Y, Seki N. THU0101 ASP015K: A Novel Jak Inhibitor Demonstrated Potent Efficacy in Adjuvant-Induced Arthritis Model in Rats. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2013-eular.629] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Makino H, Yoshinaga Y, Yamasaki Y, Morita Y, Hashimoto H, Yamamura M. Renal involvement in rheumatoid arthritis: analysis of renal biopsy specimens from 100 patients. Mod Rheumatol 2014; 12:148-54. [PMID: 24383903 DOI: 10.3109/s101650200025] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract We analyzed renal biopsy specimens from 100 patients to evaluate the characteristics of renal involvement in patients with rheumatoid arthritis (RA). Membranous nephropathy (MN) was the most common renal histological pattern (31%). Mesangial proliferative glomerulonephritis (GN) was found in 21% of cases (IgA nephropathy 12%, non-IgA GN 9%), minor changes in 17%, renal amyloidosis in 11%, interstitial nephritis in 9%, sclerotic GN in 4%, and crescentic GN in 2%. MN was relatively more frequent in men than in women, and most developed nephrotic syndrome, while a few developed renal failure. Disease-modifying antirheumatic drugs (DMARDs) correlated with MN in 26 of 31 cases. Mesangial proliferative GN showed high-grade hematuria. Amyloidosis correlated with long duration of RA; approximately half of the cases with amyloidosis also had nephrotic syndrome, and 82% developed renal failure. Of the 100 patients, 82% showed some tubulo-interstitial changes, which might be related to non-steroidal anti-inflammatory drugs. Because renal lesions in RA are very diverse, and early stage cases of MN and amyloidosis can be detected only by histological examinations, renal biopsy should be performed in cases with continuous urinary abnormalities or progressive renal failure.
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Kusaoi M, Fukazawa T, Hirashima M, Morita Y, Yamaji C, Takai S, Takasaki Y, Hashimoto H. A case of inclusion body myositis with systemic sclerosis. Mod Rheumatol 2014; 13:87-9. [DOI: 10.3109/s101650300014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yamaki S, Kouno J, Nishimura D, Nagashima M, Takechi M, Sato K, Abe K, Abe Y, Fukuda M, Furuki H, Hachiuma I, Homma A, Ichihashi N, Ichikawa C, Inaba N, Ito T, Iwamoto K, Izumikawa T, Kamisho Y, Kikuchi N, Kinno S, Kitagawa A, Kojima T, Kuboki T, Mihara M, Miyazawa S, Momota S, Morita Y, Nagae D, Nakamura Y, Namihira K, Nishikiori R, Nishizuka I, Niwa T, Ogura M, Ohkuma Y, Ohtsubo T, Okada S, Ohno J, Ozawa A, Saito Y, Sakai T, Sato S, Sera D, Suzaki F, Suzuki S, Suzuki S, Suzuki T, Taguchi M, Uenishi H, Wakabayashi M, Watanabe D, Yaguchi M, Yasumoto S, Yamaguchi T. Charge-changing interactions probing point-proton radii of nuclei. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146603099] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Fukuda M, Nishimura D, Suzuki S, Tanaka M, Takechi M, Iwamoto K, Wakabayashi S, Yaguchi M, Ohno J, Morita Y, Kamisho Y, Mihara M, Matsuta K, Nagashima M, Ohtsubo T, Izumikawa T, Ogura T, Abe K, Kikukawa N, Sakai T, Sera D, Suzuki T, Yamaguchi T, Sato K, Furuki H, Miyazawa S, Ichihashi N, Kohno J, Yamaki S, Kitagawa A, Sato S, Fukuda S. Neutron halo in 14B studied via reaction cross sections. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146602037] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Suzuki M, Suzuki T, Kawagishi T, Morita Y, Noyori R. Conjugate Addition of Phosphine-Complexed Organocopper Reagents to α,β-Unsaturated Ketones. Isr J Chem 2013. [DOI: 10.1002/ijch.198400021] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Kotake Y, Ozawa Y, Harada M, Kitagawa K, Niida H, Morita Y, Tanaka K, Suda T, Kitagawa M. YB1 binds to and represses thep16tumor suppressor gene. Genes Cells 2013; 18:999-1006. [DOI: 10.1111/gtc.12093] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2013] [Accepted: 08/07/2013] [Indexed: 11/27/2022]
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Takeuchi K, Mashimo Y, Shimojo N, Arima T, Inoue Y, Morita Y, Sato K, Suzuki S, Nishimuta T, Watanabe H, Hoshioka A, Tomiita M, Yamaide A, Watanabe M, Okamoto Y, Kohno Y, Hata A, Suzuki Y. Functional variants in the thromboxane A2 receptor gene are associated with lung function in childhood-onset asthma. Clin Exp Allergy 2013; 43:413-24. [PMID: 23517037 DOI: 10.1111/cea.12058] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Revised: 09/24/2012] [Accepted: 10/25/2012] [Indexed: 12/14/2022]
Abstract
BACKGROUND The thromboxane A2 receptor (TBXA2R) gene is associated with asthma, but no functional genetic variations are known to associate with the disease or its related phenotypes. OBJECTIVE To investigate the association of TBXA2R polymorphisms with asthma susceptibility and related phenotypes and to identify functionally relevant polymorphisms. METHODS We performed comprehensive sequencing of the TBXA2R gene in 48 Japanese control subjects and found a set of variants (SNP1 G>T rs2238634, SNP2 T>G rs2238633, SNP3 C>T rs2238632 and SNP4 G>A rs2238631) in intron 1 in linkage disequilibrium with c.795 T>C rs1131882, which was previously reported to be associated with asthma and related phenotypes. To investigate the effect of four common haplotypes (H1, H2, H3 and H4) on transcriptional activity, we performed a luciferase assay in primary bronchial smooth muscle cells (BSMCs) and human airway epithelial cells (BEAS-2B). We also studied the haplotype association with lung function, TBXA2R mRNA levels, and eosinophil fraction/count in peripheral blood in childhood-onset asthma patients and/or controls. RESULTS H2 and H4, containing minor alleles of SNP2 and SNP3, had significantly higher transcriptional activities than H1 consisting of major alleles (P < 0.001 in BSMCs and BEAS-2B). Homozygotes for redefined haplotype h2 corresponding to minor alleles of SNP2 and SNP3 were associated with lower lung function in childhood-onset asthma patients compared to other zygotes (baseline Forced expiratory volume in one second (FEV1)/ Forced vital capacity (FVC) and Forced expiratory flow between 25% and 75% of the FVC (%FEF(25-75%)): P = 0.00201 and 0.0128, respectively, and post-bronchodilator FEV1/FVC and %FEF(25-75%): P = 0.00224 and 0.0393 respectively). Haplotype h2 was also associated with higher mRNA levels in control peripheral blood cells and higher blood eosinophil fractions and counts in female controls. CONCLUSIONS AND CLINICAL RELEVANCE Genetic variants were identified in the TBXA2R gene that influenced transcriptional activity and were associated with asthma-related phenotypes. Thromboxane pathways may therefore play important roles in airway inflammation and remodelling in asthma patients.
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