101
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Sugiyama K, Kanda K, Iwasaki S, Nakazawa M, Hashikura H, Iguchi T, Sekimoto H, Itoh S, Sumita K, Takahashi A, Yamamoto J. Integral Experiments in a 120-cm Lithium Sphere. ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst85-a39977] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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102
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Kimura S, Nakamura S, Nakagama S, Hayasaka K, Misawa T, Mizusawa M, Yamakami Y, Kojima K, Sagawa Y, Ohtani H, Hishikari K, Sugiyama T, Hikita H, Takahashi A. P2367The impact of systemic pentraxin-3 values on coronary plaque components by optical coherence tomography and outcomes in patients with stable angina pectoris. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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103
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Hashimoto S, Takahashi A, Yamada T, Mizuguchi Y, Taniguchi N, Nakajima S, Hata T. P6075OCT guided excimer laser coronary angioplasty for in-stent restenosis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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104
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Toyo‐oka L, Mahasirimongkol S, Yanai H, Mushiroda T, Wattanapokayakit S, Wichukchinda N, Yamada N, Smittipat N, Juthayothin T, Palittapongarnpim P, Nedsuwan S, Kantipong P, Takahashi A, Kubo M, Sawanpanyalert P, Tokunaga K. Strain‐based
HLA
association analysis identified
HLA‐DRB1
*09:01
associated with modern strain tuberculosis. HLA 2017; 90:149-156. [DOI: 10.1111/tan.13070] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 05/18/2017] [Accepted: 05/22/2017] [Indexed: 01/08/2023]
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105
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Inoue N, Nishimura N, Takahashi A, Kusano Y, Yamauchi H, Ueda K, Mishima Y, Yokoyama M, Terui Y, Tsuyama N, Takeuchi K, Hatake K. Negative impact of zoledronic acid in R-CHOP treated DLBCL with bone metastasis. Hematol Oncol 2017. [DOI: 10.1002/hon.2439_87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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106
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Nishimura N, Asaka R, Takeuchi K, Tsuyama N, Inoue N, Takahashi A, Yamauchi H, Kusano Y, Ueda K, Mishima Y, Yokoyama M, Terui Y, Hatake K. Quantitative analysis of MYD88 L265P mutations by digital PCR is an independent prognostic factor for CNS relapse as well as systemic relapse and poor outcome. Hematol Oncol 2017. [DOI: 10.1002/hon.2439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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107
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Shiomi D, Kiyama H, Shimizu M, Yamada M, Shimada N, Takahashi A, Kaki N. Surgical embolectomy for high-risk acute pulmonary embolism is standard therapy. Interact Cardiovasc Thorac Surg 2017; 25:297-301. [DOI: 10.1093/icvts/ivx091] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 02/21/2017] [Indexed: 11/14/2022] Open
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108
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Oimatsu Y, Kaikita K, Ishii M, Mitsuse T, Ito M, Arima Y, Sueta D, Takahashi A, Iwashita S, Yamamoto E, Kojima S, Hokimoto S, Tsujita K. Total Thrombus-formation Analysis System Predicts Periprocedural Bleeding Events in Patients With Coronary Artery Disease Undergoing Percutaneous Coronary Intervention. J Am Heart Assoc 2017; 6:JAHA.116.005263. [PMID: 28438734 PMCID: PMC5533019 DOI: 10.1161/jaha.116.005263] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Periprocedural bleeding events are common after percutaneous coronary intervention. We evaluated the association of periprocedural bleeding events with thrombogenicity, which was measured quantitatively by the Total Thrombus-formation Analysis System equipped with microchips and thrombogenic surfaces (collagen, platelet chip [PL]; collagen plus tissue factor, atheroma chip [AR]). METHODS AND RESULTS Between August 2013 and March 2016, 313 consecutive patients with coronary artery disease undergoing elective percutaneous coronary intervention were enrolled. They were divided into those with or without periprocedural bleeding events. We determined the bleeding events as composites of major bleeding events defined by the International Society on Thrombosis and Hemostasis and minor bleeding events (eg, minor hematoma, arteriovenous shunt and pseudoaneurysm). Blood samples obtained at percutaneous coronary intervention were analyzed for thrombus formation area under the curve (PL24-AUC10 for PL chip; AR10-AUC30 for AR chip) by the Total Thrombus-formation Analysis System and P2Y12 reaction unit by the VerifyNow system. Periprocedural bleeding events occurred in 37 patients. PL24-AUC10 levels were significantly lower in patients with such events than those without (P=0.002). Multiple logistic regression analyses showed association between low PL24-AUC10 levels and periprocedural bleeding events (odds ratio, 2.71 [1.22-5.99]; P=0.01) and association between PL24-AUC10 and periprocedural bleeding events in 176 patients of the femoral approach group (odds ratio, 2.88 [1.11-7.49]; P=0.03). However, PL24-AUC10 levels in 127 patients of the radial approach group were not significantly different in patients with or without periprocedural bleeding events. CONCLUSIONS PL24-AUC10 measured by the Total Thrombus-formation Analysis System is a potentially useful predictor of periprocedural bleeding events in coronary artery disease patients undergoing elective percutaneous coronary intervention.
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109
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Kusano Y, Yokoyama M, Terui Y, Nishimura N, Mishima Y, Ueda K, Tsuyama N, Hirofumi Y, Takahashi A, Inoue N, Takeuchi K, Hatake K. Low absolute peripheral blood CD4+ T-cell count predicts poor prognosis in R-CHOP-treated patients with diffuse large B-cell lymphoma. Blood Cancer J 2017; 7:e558. [PMID: 28430176 PMCID: PMC5436080 DOI: 10.1038/bcj.2017.37] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 02/25/2017] [Accepted: 03/29/2017] [Indexed: 12/20/2022] Open
Abstract
The absolute peripheral blood lymphocyte count at diagnosis is known to be a strong prognostic factor in patients with diffuse large B-cell lymphoma (DLBCL) treated with rituximab, cyclophosphamide, doxorubicin, vincristine and prednisone (R-CHOP), but it remains unclear as to which peripheral blood lymphocyte population is reflective of DLBCL prognosis. In this cohort, 355 patients with DLBCL treated with R-CHOP from 2006 to 2013 were analyzed. The low absolute CD4+ T-cell count (ACD4C) at diagnosis negatively correlated with the overall response rate and the complete response rate significantly (P<0.00001). An ACD4C<343 × 106/l had a significant negative impact on the 5-year progression-free survival and the overall survival as compared with an ACD4C⩾343 × 106/l (73.7% (95% confidence interval (CI)=66.7-79.5) versus 50.3% (95% CI=39.0-60.6), P<0.00001 and 83.3% (95% CI=77.1-88.0) versus 59.0% (95% CI=47.9-68.5), P<0.00000001, respectively). Multivariate analysis revealed that the ACD4C was an independent prognostic marker (hazard ratio=2.2 (95% CI=1.3-3.7), P<0.01). In conclusion, a low ACD4C at diagnosis served as an independent poor prognostic marker in patients with DLBCL.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antibodies, Monoclonal, Murine-Derived/administration & dosage
- Antibodies, Monoclonal, Murine-Derived/adverse effects
- Antineoplastic Combined Chemotherapy Protocols/administration & dosage
- Antineoplastic Combined Chemotherapy Protocols/adverse effects
- CD4 Lymphocyte Count
- CD4-Positive T-Lymphocytes/drug effects
- CD4-Positive T-Lymphocytes/pathology
- Cyclophosphamide/administration & dosage
- Cyclophosphamide/adverse effects
- Disease-Free Survival
- Doxorubicin/administration & dosage
- Doxorubicin/adverse effects
- Female
- Humans
- Lymphoma, Large B-Cell, Diffuse/blood
- Lymphoma, Large B-Cell, Diffuse/drug therapy
- Lymphoma, Large B-Cell, Diffuse/pathology
- Male
- Middle Aged
- Prednisone/administration & dosage
- Prednisone/adverse effects
- Prognosis
- Rituximab
- Treatment Outcome
- Vincristine/administration & dosage
- Vincristine/adverse effects
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110
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Miyazaki T, Kondrashev SL, Kasagi S, Mizusawa K, Takahashi A. Sequence and localization of an ultraviolet (sws1) opsin in the retina of the Japanese sardine Sardinops melanostictus (Teleostei: Clupeiformes). JOURNAL OF FISH BIOLOGY 2017; 90:954-967. [PMID: 27861878 DOI: 10.1111/jfb.13210] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 10/13/2016] [Indexed: 06/06/2023]
Abstract
A full-length complementary (c)DNA encoding ultraviolet (UV)-sensitive opsin (sws1) was isolated from the retina of the Japanese sardine Sardinops melanostictus. The sws1 phylogenetic tree showed a sister group relationship with the Cypriniformes, following the ray-finned fish phylogeny. By expressing reconstituted opsin in vitro, it was determined that the maximum absorbance spectrum (λmax ) of sws1 is around 382 nm, being intermediate in position between two subtypes of sws1 pigment that are UV sensitive (λmax = 355-380 nm) and violet sensitive (λmax = 388-455 nm), which have been reported to date. The ocular media transmitted >20% transmittance of light in the range of 360-600 nm. In situ hybridization analyses revealed that sws1 messenger (m)RNA is localized in a central single cone surrounded by four double cones in a square mosaic. The square mosaic occupies the ventro-temporal quadrant of the retina and the in situ hybridization signals were dominant in this area suggesting that the fish may use UV vision when looking upward. Based on these results, considerable significances of potential UV sensitivity, in relation to characteristic habits of S. melanostictus, are discussed.
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Soeda E, Hoshino K, Izawa Y, Takaoka C, Isobe C, Takahashi A, Takahashi N, Yamada Y, Shimojima N, Fujino A, Shinoda M, Kitagawa Y, Tanabe M, Nakamaru S, Taki N, Sekiguchi A, Nakazawa Y, Turukawa T, Kuroda T. A Report on the Positive Response to an Outdoor Nature Challenge of a Snow Camp for Young Liver Transplant Patients. Transplant Proc 2017; 49:115-120. [PMID: 28104117 DOI: 10.1016/j.transproceed.2016.10.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
OBJECTIVES More than two decades have passed since the first living donor liver transplantation was performed in Japan in 1989. There are many reports about problems in adherence to taking medication and medical follow-ups in children who received liver transplants, because there is no transition strategy for those children and parents or guardians. The objective of this study is to measure the effect of nature and outdoor activity to improve children's medical adherence. METHODS We recruited participants from 9-year-old children who are attending the outpatient liver transplant clinic in a stable condition (no event such as rejection or surgical procedure within 6 months). We took participants to a snow camp and measured its effect by using the IKIRU CHIKARA (IKR) tool, which contain 28 items divided into 3 categories: psychosocial ability, moral fitness, and physical ability. Children were tested on three occasions, before, just after, and 1 month after the camp. RESULTS Eight patients participated in the snow camp and 7 patients were eligible for the study. The average age was 12.6 with a range 10 to 17 years. There were 3 girls and 4 boys. The average IKR scores before, just after, and 1 month after the camp were 127.9, 131.5, and 126.6, respectively. CONCLUSION An outdoor activity such as a snow camp can be safely conducted, and it is an acceptable option to incorporate within a pediatric liver transplant program. There were no significant changes in IKR scores during this short observation. Longer observation is needed to measure the effect of nature and outdoor activities.
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112
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Omata W, Tsutsumida A, Namikawa K, Takahashi A, Oashi K, Yamazaki N. Sequential Combination Chemotherapy of Dacarbazine (DTIC) with Carboplatin and Paclitaxel for Patients with Metastatic Mucosal Melanoma of Nasal Cavity and Paranasal Sinuses. CLINICAL MEDICINE INSIGHTS-CASE REPORTS 2017; 10:1-5. [PMID: 28096700 PMCID: PMC5224238 DOI: 10.4137/ccrep.s39851] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Revised: 11/06/2016] [Accepted: 11/13/2016] [Indexed: 12/16/2022]
Abstract
By the recent introduction of molecular targeting drugs against BRAF mutation and immune checkpoint inhibitors, the prognosis of patients with melanoma in advanced stage is now improving, but still in the minority. Mucosal melanoma lacks the BRAF mutations, and hence conventional chemotherapeutic regimens must be improved. We have conventionally used dacarbazine (DTIC) for patients with metastatic mucosal melanoma. However, the efficacy of DTIC in patients with metastatic mucosal melanoma has been limited. Therefore, we explored other possibilities to improve the prognosis of patients suffering from metastatic mucosal melanoma. In this communication, we present a retrospective analysis of the sequential combination chemotherapy of DTIC with carboplatin and paclitaxel (CP) for metastatic mucosal melanoma of nasal cavity and paranasal sinuses. The objective response rate of seven patients is 14.3% by RECIST 1.1 and the overall survival (OS) is 12.5 months. These data indicate that the sequential combination chemotherapy of DTIC with CP could be an option for patients with metastatic mucosal melanoma of nasal cavity and paranasal sinuses who are currently ending into dismal prognosis.
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113
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Tsutsumida A, Yamazaki N, Takahashi A, Namikawa K. 408P Ipilimumab after nivolumab therapy for melanoma patients in Asia. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw589.005] [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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114
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Tsutsumida A, Yamazaki N, Takahashi A, Namikawa K. 408P Ipilimumab after nivolumab therapy for melanoma patients in Asia. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00566-4] [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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115
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Maruki Y, Kondo S, Oshiro Y, Yutaka F, Namikawa K, Takahashi A, Tsutsumida A, Yamazaki N. 402P Detailed clinical course of immune-related hepatotoxicity in advanced melanoma patients using immune checkpoint inhibitors. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw588.008] [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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116
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Hirano Y, Ihara K, Masuda T, Yamamoto T, Iwata I, Takahashi A, Awata H, Nakamura N, Takakura M, Suzuki Y, Horiuchi J, Okuno H, Saitoe M. Shifting transcriptional machinery is required for long-term memory maintenance and modification in Drosophila mushroom bodies. Nat Commun 2016; 7:13471. [PMID: 27841260 PMCID: PMC5114576 DOI: 10.1038/ncomms13471] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Accepted: 10/06/2016] [Indexed: 01/08/2023] Open
Abstract
Accumulating evidence suggests that transcriptional regulation is required for maintenance of long-term memories (LTMs). Here we characterize global transcriptional and epigenetic changes that occur during LTM storage in the Drosophila mushroom bodies (MBs), structures important for memory. Although LTM formation requires the CREB transcription factor and its coactivator, CBP, subsequent early maintenance requires CREB and a different coactivator, CRTC. Late maintenance becomes CREB independent and instead requires the transcription factor Bx. Bx expression initially depends on CREB/CRTC activity, but later becomes CREB/CRTC independent. The timing of the CREB/CRTC early maintenance phase correlates with the time window for LTM extinction and we identify different subsets of CREB/CRTC target genes that are required for memory maintenance and extinction. Furthermore, we find that prolonging CREB/CRTC-dependent transcription extends the time window for LTM extinction. Our results demonstrate the dynamic nature of stored memory and its regulation by shifting transcription systems in the MBs. Transcriptional regulation is necessary for maintaining long-term memories (LTM) but the mechanistic details are not completely defined. Here the authors identify transcriptional machinery and histone modifiers required for LTM maintenance in Drosophila and show that transcriptional regulation for LTM maintenance is distinct from that for LTM formation.
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117
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de Andrés MC, Takahashi A, Oreffo ROC. Demethylation of an NF-κB enhancer element orchestrates iNOS induction in osteoarthritis and is associated with altered chondrocyte cell cycle. Osteoarthritis Cartilage 2016; 24:1951-1960. [PMID: 27307355 DOI: 10.1016/j.joca.2016.06.002] [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: 01/18/2016] [Revised: 05/18/2016] [Accepted: 06/06/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To examine the methylation profile of the nuclear factor (NF)-κB enhancer region at -5.8 kb of inducible nitric oxide synthase (iNOS) and the subsequent role in the induction of osteoarthritis (OA) via cell cycle regulation. METHODS Percentage methylation was determined by pyrosequencing, gene expression by qRT-PCR and cell proliferation was determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. Transient transfections were induced to determine the effect of the NF-κB enhancer region on cell proliferation and the influence of DNA methylation. RESULTS In vitro de-methylation with 5-aza-dC showed decreased levels of DNA methylation at CpG sites localised at -5.8 kb, which correlated with higher levels of iNOS expression. In vitro methylation of the NF-κB enhancer region at -5.8 kb increased the percentage of cells at G0/G1 cell cycle phase. Loss of methylation within this region correlated with, enhanced proliferation and increased number of cells at G2/M phase. OA chondrocytes demonstrated up-regulation of the G0/G1 cell cycle progression markers Cyclin D1 and CDK6 in contrast to control cells. We demonstrate the loss of methylation that occurs at specific CpG sites localised at the -5.8 kb NF-κB enhancer region of the iNOS gene in OA chondrocytes permits the binding of this transcription factor activating the expression of iNOS. This results in subsequent altered cell cycle regulation, altered proliferative phenotype and transmission of the pathogenic phenotype to daughter cells. CONCLUSIONS This study indicates that inhibition of cell cycle progression by iNOS enhancer hypermethylation is capable of reducing pro-inflammatory responses via down-regulation of NF-κB with important therapeutic implications in OA.
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118
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Goswami S, Yee SW, Xu F, Sridhar SB, Mosley JD, Takahashi A, Kubo M, Maeda S, Davis RL, Roden DM, Hedderson MM, Giacomini KM, Savic RM. A Longitudinal HbA1c Model Elucidates Genes Linked to Disease Progression on Metformin. Clin Pharmacol Ther 2016; 100:537-547. [PMID: 27415606 PMCID: PMC5534241 DOI: 10.1002/cpt.428] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Revised: 06/20/2016] [Accepted: 06/22/2016] [Indexed: 12/20/2022]
Abstract
One-third of type-2 diabetic patients respond poorly to metformin. Despite extensive research, the impact of genetic and nongenetic factors on long-term outcome is unknown. In this study we combine nonlinear mixed effect modeling with computational genetic methodologies to identify predictors of long-term response. In all, 1,056 patients contributed their genetic, demographic, and long-term HbA1c data. The top nine variants (of 12,000 variants in 267 candidate genes) accounted for approximately one-third of the variability in the disease progression parameter. Average serum creatinine level, age, and weight were determinants of symptomatic response; however, explaining negligible variability. Two single nucleotide polymorphisms (SNPs) in CSMD1 gene (rs2617102, rs2954625) and one SNP in a pharmacologically relevant SLC22A2 gene (rs316009) influenced disease progression, with minor alleles leading to less and more favorable outcomes, respectively. Overall, our study highlights the influence of genetic factors on long-term HbA1c response and provides a computational model, which when validated, may be used to individualize treatment.
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119
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Nakamura Y, Kitano S, Takahashi A, Tsutsumida A, Namikawa K, Muto I, Ueno M, Muto Y, Yamazaki N. Pretreatment prognostic factors and early markers for outcome in advanced melanoma treated with nivolumab. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw379.24] [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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120
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Takahashi A, Tsutsumida A, Namikawa K, Nakamura Y, Muto I, Yamazaki N. The efficacy of nivolumab for unresectable metastatic mucosal melanoma. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw379.14] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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121
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Kotake K, Suzukamo Y, Kai I, Iwanaga K, Takahashi A. Social support and substitute voice acquisition on psychological adjustment among patients after laryngectomy. Eur Arch Otorhinolaryngol 2016; 274:1557-1565. [PMID: 27687680 PMCID: PMC5309287 DOI: 10.1007/s00405-016-4310-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Accepted: 09/15/2016] [Indexed: 12/17/2022]
Abstract
The objective is to clarify whether social support and acquisition of alternative voice enhance the psychological adjustment of laryngectomized patients and which part of the psychological adjustment structure would be influenced by social support. We contacted 1445 patients enrolled in a patient association using mail surveys and 679 patients agreed to participate in the study. The survey items included age, sex, occupation, post-surgery duration, communication method, psychological adjustment (by the Nottingham Adjustment Scale Japanese Laryngectomy Version: NAS-J-L), and the formal support (by Hospital Patient Satisfaction Questionnaire-25: HPSQ-25). Social support and communication methods were added to the three-tier structural model of psychological adjustment shown in our previous study, and a covariance structure analysis was conducted. Formal/informal supports and acquisition of alternative voice influence only the "recognition of oneself as voluntary agent", the first tier of the three-tier structure of psychological adjustment. The results suggest that social support and acquisition of alternative voice may enhance the recognition of oneself as voluntary agent and promote the psychological adjustment.
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122
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Chang SW, McDonough CW, Gong Y, Johnson TA, Tsunoda T, Gamazon ER, Perera MA, Takahashi A, Tanaka T, Kubo M, Pepine CJ, Johnson JA, Cooper-DeHoff RM. Genome-wide association study identifies pharmacogenomic loci linked with specific antihypertensive drug treatment and new-onset diabetes. THE PHARMACOGENOMICS JOURNAL 2016; 18:106-112. [PMID: 27670767 PMCID: PMC5368017 DOI: 10.1038/tpj.2016.67] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Revised: 07/11/2016] [Accepted: 08/25/2016] [Indexed: 01/14/2023]
Abstract
We conducted a discovery genome-wide association study with expression quantitative trait loci (eQTL) annotation of new-onset diabetes (NOD) among European Americans, who were exposed to a calcium channel blocker-based strategy (CCB strategy) or a β-blocker-based strategy (β-blocker strategy) in the INternational VErapamil SR Trandolapril STudy. Replication of the top signal from the SNP*treatment interaction analysis was attempted in Hispanic and African Americans, and a joint meta-analysis was performed (total 334 NOD cases and 806 matched controls). PLEKHH2 rs11124945 at 2p21 interacted with antihypertensive exposure for NOD (meta-analysis p=5.3×10−8). rs11124945 G allele carriers had lower odds for NOD when exposed to the β-blocker strategy compared with the CCB strategy [OR=0.38 (0.24-0.60), p=4.0×10−5], while A/A homozygotes exposed to the β-blocker strategy had increased odds for NOD compared with the CCB strategy [OR=2.02 (1.39-2.92), p=2.0×10−4]. eQTL annotation of the 2p21 locus provides functional support for regulating gene expression.
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123
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Takahashi A, Tani S, Murota H, Katayama I. Histamine Modulates Sweating and Affects Clinical Manifestations of Atopic Dermatitis. CURRENT PROBLEMS IN DERMATOLOGY 2016; 51:50-6. [PMID: 27584962 DOI: 10.1159/000446758] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/15/2023]
Abstract
Many factors such as food or environmental allergens, bacteria, fungi, and mental stress aggravate the condition of atopic dermatitis (AD) eczema. Sweating can also exacerbate AD, and patients are aware of that. In the past, it has been reported that contamination of skin surface antigens by sweat induces acute allergic reactions and that sweating functions of AD patients via axonal reflexes are decreased. Histamine demonstrably inhibits acetylcholine-induced sweating in both mice and humans via histamine H1 receptor-mediated signaling. In sweat glands, acetylcholine inactivates glycogen synthase kinase 3β (GSK3β), a kinase involved in endocytosis and secretion, whereas simultaneous stimulation with histamine activates GSK3β and inhibits sweat secretion. Thus, histamine might be involved in the mechanism of abnormal skin dryness in patients with AD via decreasing sweat secretion. On another front, some patients secrete sweat normally. Patients with regular sweating are prone to develop skin disorders such as papules or erythema by residual sweat left on the skin surface. Patients with decreased sweating are prone to develop disorders characterized by xerosis, lichenoid changes, prurigo by elevated skin temperature, skin dryness, and compromised skin conditions. Careful inspection of skin manifestations provides a good indication of a patient's ability to sweat.
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124
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Taylor G, Bye M, Takahashi A, Nicolais C. Catalytic Amine Crosslinkers for Polyurethanes. J CELL PLAST 2016. [DOI: 10.1177/0021955x8502100508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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125
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Kon H, Ezura M, Takahashi A, Yoshimoto T. Giant Multilocular Fusiform Aneurysm of the Posterior Cerebral Artery. Interv Neuroradiol 2016; 3:319-24. [DOI: 10.1177/159101999700300407] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/1997] [Accepted: 10/13/1997] [Indexed: 10/20/2022] Open
Abstract
A 60-year-old woman presented with a giant posterior cerebral artery aneurysm. Her visual field examination revealed right upper quadrantanopia. Because of the difficulty of the neck clipping, we performed parent artery occlusion using the Guglielmi detachable coils following balloon Matas test monitored with single photon emission computed tomography (SPECT) with 99mTc-d, l hexamethyl-propylene-amine oxime. Postoperative left internal angiography showed the left occipital region was supplied by a leptomenigeal collateral via left the middle cerebral artery. Six months after embolisation the aneurysm was completely thrombosed on MR imaging. Her visual field deficits had also improved six months after embolisation. A combination of the balloon Matas test with SPECT followed by parent artery occlusion is an excellent method to treat such giant aneurysms.
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Takahashi A, Ezura M, Yoshimoto T. Broad Neck Basilar Tip Aneurysm Treated by Neck Plastic Intra-Aneurysmal GDC Embolisation with Protective Balloon. Interv Neuroradiol 2016; 3:167-70. [PMID: 20678355 DOI: 10.1177/159101999700300209] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/1997] [Accepted: 04/18/1997] [Indexed: 11/15/2022] Open
Abstract
A 56-year-old male was found to have a basilar artery aneurysm by magnetic resonance imaging. Angiography demonstrated a broad neck basilar tip aneurysm. He refused surgical clipping but accepted intravascular embolisation. Introducing catheters were inserted into each of the bilateral vertebral arteries. A microcatheter was introduced into the aneurysm through one of the introducing catheters and a double lumen balloon catheter was introduced into the left posterior cerebral artery (PCA) through the other. The balloon was located from the left PCA to the basilar artery across the aneurysmal neck with the aid of a guidewire passed through the inner lumen of the balloon catheter. The balloon was inflated, and a Guglielmi detachable coil (GDC) was inserted until the platinum part was placed inside the aneurysm. The balloon was deflated to confirm the stability of the GDC, and then the GDC was electrically detached. This procedure was repeated until nine GDCs were successfully inserted. The aneurysm was tightly embolised despite its broad neck. Angiography comfirmed complete neck closure and stable preservation of the basilar artery and bilateral PCAs immediately, 1 week, 3 months, 6 months, and 12 months after embolisation without evidence of thrombo-embolic complications. Neck plastic intra-aneurysmal GDC embolisation using a protective balloon can be used to treat broad-neck aneurysms.
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Takahashi A. Neck Plastic Intra-Aneurysmal GDC Embolisation with Double Protective Balloons. Interv Neuroradiol 2016; 4:177-9. [PMID: 20673407 DOI: 10.1177/159101999800400211] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/1998] [Accepted: 03/20/1998] [Indexed: 11/16/2022] Open
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Iwata T, Sakamoto KQ, Edwards EWJ, Staniland IJ, Trathan PN, Goto Y, Sato K, Naito Y, Takahashi A. The influence of preceding dive cycles on the foraging decisions of Antarctic fur seals. Biol Lett 2016; 11:rsbl.2015.0227. [PMID: 26156132 DOI: 10.1098/rsbl.2015.0227] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The foraging strategy of many animals is thought to be determined by their past experiences. However, few empirical studies have investigated whether this is true in diving animals. We recorded three-dimensional movements and mouth-opening events from three Antarctic fur seals during their foraging trips to examine how they adapt their behaviour based on past experience--continuing to search for prey in the same area or moving to search in a different place. Each dive cycle was divided into a transit phase and a feeding phase. The linear horizontal distance travelled after feeding phases in each dive was affected by the mouth-opening rate during the previous 244 s, which typically covered two to three dive cycles. The linear distance travelled tended to be shorter when the mouth-opening rate in the previous 244 s was higher, i.e. seals tended to stay in the same areas with high prey-encounter rates. These results indicate that Antarctic fur seals follow decision-making strategies based on the past foraging experience over time periods longer than the immediately preceding dive.
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Mukai T, Nagamura-Inoue T, Shimazu T, Mori Y, Takahashi A, Tojo A. Neurosphere Formation Enhances the Neurogenic Differentiation Potential and Migratory Ability of Umbilical Cord-Mesenchymal Stromal Cells. Cytotherapy 2016. [DOI: 10.1016/j.jcyt.2016.03.161] [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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Iura A, Takahashi A, Hakata S, Mashimo T, Fujino Y. Reductions in tonic GABAergic current in substantia gelatinosa neurons and GABAAreceptor δ subunit expression after chronic constriction injury of the sciatic nerve in mice. Eur J Pain 2016; 20:1678-1688. [DOI: 10.1002/ejp.891] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/28/2016] [Indexed: 11/09/2022]
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Sunaga S, Akiyama N, Miyagi R, Takahashi A. Factors underlying natural variation in body pigmentation of Drosophila melanogaster. Genes Genet Syst 2016; 91:127-137. [PMID: 27021917 DOI: 10.1266/ggs.15-00061] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Molecular mechanisms underlying standing genetic variation of an ecologically relevant trait such as pigmentation trait variation in a model insect, Drosophila melanogaster, are relevant to our understanding of different kinds of intergenomic interactions. In this study, we focused on the association between body pigmentation and stress resistance, and on genotype-by-environment interaction, both of which are likely to contribute to the persistence of phenotypic variation in a natural population. First, we detected a significant association between pigmentation traits in females and starvation resistance (darker strains were weaker) and a weak association between pigmentation and chill coma recovery time (darker strains showed shorter recovery time) among 20 inbred strains from the Drosophila melanogaster Genetic Reference Panel (DGRP), which originated from a natural population in North America. These associations revealed a complex relationship between body pigmentation and physiological traits that may give rise to balanced selective forces acting on the traits under fluctuating environmental conditions. Second, using four of the DGRP strains, a substantial degree of genotype (strain) × environment (rearing temperature) interaction was detected among expression levels of the genes encoding effector enzymes in the melanin biosynthesis pathway. These interactions can potentially reduce the efficiency of purifying selection on the pigmentation traits over a wide range of temperature conditions. Finally, we discuss possible mechanisms that contribute to the maintenance of the standing pigmentation variation in this species.
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Yoshida K, Miyagi R, Mori S, Takahashi A, Makino T, Toyoda A, Fujiyama A, Kitano J. Whole-genome sequencing reveals small genomic regions of introgression in an introduced crater lake population of threespine stickleback. Ecol Evol 2016; 6:2190-204. [PMID: 27069575 PMCID: PMC4782248 DOI: 10.1002/ece3.2047] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 02/09/2016] [Indexed: 01/13/2023] Open
Abstract
Invasive species pose a major threat to biological diversity. Although introduced populations often experience population bottlenecks, some invasive species are thought to be originated from hybridization between multiple populations or species, which can contribute to the maintenance of high genetic diversity. Recent advances in genome sequencing enable us to trace the evolutionary history of invasive species even at whole‐genome level and may help to identify the history of past hybridization that may be overlooked by traditional marker‐based analysis. Here, we conducted whole‐genome sequencing of eight threespine stickleback (Gasterosteus aculeatus) individuals, four from a recently introduced crater lake population and four of the putative source population. We found that both populations have several small genomic regions with high genetic diversity, which resulted from introgression from a closely related species (Gasterosteus nipponicus). The sizes of the regions were too small to be detected with traditional marker‐based analysis or even some reduced‐representation sequencing methods. Further amplicon sequencing revealed linkage disequilibrium around an introgression site, which suggests the possibility of selective sweep at the introgression site. Thus, interspecies introgression might predate introduction and increase genetic variation in the source population. Whole‐genome sequencing of even a small number of individuals can therefore provide higher resolution inference of history of introduced populations.
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Ito M, Kaikita K, Sueta D, Ishii M, Oimatsu Y, Arima Y, Iwashita S, Takahashi A, Hoshiyama T, Kanazawa H, Sakamoto K, Yamamoto E, Tsujita K, Yamamuro M, Kojima S, Hokimoto S, Yamabe H, Ogawa H. Total Thrombus-Formation Analysis System (T-TAS) Can Predict Periprocedural Bleeding Events in Patients Undergoing Catheter Ablation for Atrial Fibrillation. J Am Heart Assoc 2016; 5:JAHA.115.002744. [PMID: 26811167 PMCID: PMC4859393 DOI: 10.1161/jaha.115.002744] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Background Non–vitamin K antagonist oral anticoagulants are used to prevent thromboembolism in patients with atrial fibrillation. The T‐TAS “Total Thrombus‐formation Analysis System” (Fujimori Kogyo Co Ltd) was developed for quantitative analysis of thrombus formation using microchips with thrombogenic surfaces (collagen, platelet chip [PL] ; collagen plus tissue factor, atheroma chip [AR]). We evaluated the utility of T‐TAS in predicting periprocedural bleeding in atrial fibrillation patients undergoing catheter ablation (CA). Methods and Results After exclusion of 20 from 148 consecutive patients undergoing CA, the remaining 128 patients were divided into 2 treatment groups: the warfarin group (n=30) and the non–vitamin K antagonist oral anticoagulants group (n=98). Blood samples obtained on the day of CA (anticoagulant‐free point) and at 3 and 30 days after CA were used in T‐TAS to compute the thrombus formation area under the curve (AUC; AUC for the first 10 minutes for PL tested at flow rate of 24 μL/min [PL24‐AUC10]; AUC for the first 30 minutes for AR tested at flow rate of 10 μL/min [AR10‐AUC30]). AR10‐AUC30 and PL24‐AUC10 levels were similar in the 2 groups on the day of CA. Levels of AR10‐AUC30, but not PL24‐AUC10, were significantly lower in the 2 groups at days 3 and 30 after CA. Multiple logistic regression analyses identified the AR10‐AUC30 level on the day of CA as a significant predictor of periprocedural bleeding events (odds ratio 5.7; 95% CI 1.54–21.1; P=0.009). Receiver operating characteristic analysis showed that the AR10‐AUC30 level on the day of CA significantly predicted periprocedural bleeding events (AUC 0.859, 95% CI 0.766–0.951; P<0.001). The cutoff AR10‐AUC30 level was 1648 for identification of periprocedural bleeding events. Conclusions These results suggested that the AR10‐AUC30 level determined by T‐TAS is a potentially useful marker for prediction of bleeding events in atrial fibrillation patients undergoing CA.
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Gen S, Usui R, Sasaki T, Nobe K, Takahashi A, Okudaira K, Ikeda N. Infected Aneurysm after Endoscopic Submucosal Dissection. Intern Med 2016; 55:1327-9. [PMID: 27181541 DOI: 10.2169/internalmedicine.55.5631] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 79-year-old man on hemodialysis was hospitalized for further investigation. Early gastric cancer was diagnosed by gastrointestinal endoscopy and endoscopic submucosal dissection (ESD) was performed. Fever and abdominal pain thereafter developed, and a severe inflammatory response was observed on a blood test. Contrast computed tomography (CT) showed ulcer-like projections and soft tissue surrounding the aorta, from the celiac to left renal artery. An infected aneurysm was diagnosed. Although infected aneurysms developing after laparoscopic cholecystectomy or biopsy of contiguous esophageal duplication cyst have been reported, those developing after ESD have not. When fever and abdominal pain develop after ESD, an infected aneurysm should be considered and contrast CT performed.
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Takahashi A, Nakajima K, Togitani K, Aoki N, Miyoshi K, Sano S. Spontaneous remission of aleukemic cutaneous myeloid sarcoma followed by crisis of acute monoblastic leukemia. J Dermatol 2015; 43:452-3. [PMID: 26661142 DOI: 10.1111/1346-8138.13202] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Takata T, Takahashi A, Taniguchi Y, Terada Y, Sano S. Detection of asymptomatic enthesitis in psoriasis patients: An onset of psoriatic arthritis? J Dermatol 2015; 43:650-4. [DOI: 10.1111/1346-8138.13212] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 10/12/2015] [Indexed: 12/15/2022]
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Nomura H, Takahashi A, Usami T, Matoda M, Kanao H, Kondo E, Omatsu K, Kato K, Takazawa Y, Takeshima N. 283P Clinicopathological features of primary malignant melanoma of the vagina. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv525.17] [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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Tsutsumida A, Yamazaki N, Takahashi A, Namikawa K, Fujiwara Y, Kondo S, Yoshikawa S, Yoshino Y, Suzuki A, Mukaiyama A, Nishimura Y, Kiyohara Y. 346PD Evaluation of safety, tolerability, pharmacokinetics (PK) and efficacy of dabrafenib and trametinib combination (Dab + Tra) therapy in Japanese patients (pts) with BRAF V600 mutation-positive advanced cutaneous melanoma: a phase (Ph) I/II study. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv528.03] [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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139
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Miyagi R, Akiyama N, Osada N, Takahashi A. Complex patterns of cis-regulatory polymorphisms in ebony underlie standing pigmentation variation in Drosophila melanogaster. Mol Ecol 2015; 24:5829-41. [PMID: 26503353 DOI: 10.1111/mec.13432] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Revised: 10/16/2015] [Accepted: 10/21/2015] [Indexed: 01/08/2023]
Abstract
Pigmentation traits in adult Drosophila melanogaster were used in this study to investigate how phenotypic variations in continuous ecological traits can be maintained in a natural population. First, pigmentation variation in the adult female was measured at seven different body positions in 20 strains from the Drosophila melanogaster Genetic Reference Panel (DGRP) originating from a natural population in North Carolina. Next, to assess the contributions of cis-regulatory polymorphisms of the genes involved in the melanin biosynthesis pathway, allele-specific expression levels of four genes were quantified by amplicon sequencing using a 454 GS Junior. Among those genes, ebony was significantly associated with pigmentation intensity of the thoracic segment. Detailed sequence analysis of the gene regulatory regions of this gene indicated that many different functional cis-regulatory alleles are segregating in the population and that variations outside the core enhancer element could potentially play important roles in the regulation of gene expression. In addition, a slight enrichment of distantly associated SNP pairs was observed in the ~10 kb cis-regulatory region of ebony, which suggested the presence of interacting elements scattered across the region. In contrast, sequence analysis in the core cis-regulatory region of tan indicated that SNPs within the region are significantly associated with allele-specific expression level of this gene. Collectively, the data suggest that the underlying genetic differences in the cis-regulatory regions that control intraspecific pigmentation variation can be more complex than those of interspecific pigmentation trait differences, where causal genetic changes are typically confined to modular enhancer elements.
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Yorozu A, Tanaka T, Eriguchi T, Kuroiwa N, Takahashi A, Saito S, Shiraishi Y, Ohashi T. IMRT Made Less Toxic Than 3D Conformal Radiation Therapy in Combination With Iodine-125 Brachytherapy for the Treatment of Prostate Cancer. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1028] [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]
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141
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Takahashi A, de Andrés M, Hashimoto K, Itoi E, Oreffo R. Epigenetic regulation of interleukin-8, an inflammatory chemokine, in osteoarthritis. Osteoarthritis Cartilage 2015; 23:1946-54. [PMID: 26521741 PMCID: PMC4638192 DOI: 10.1016/j.joca.2015.02.168] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 02/08/2015] [Accepted: 02/24/2015] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine whether altered IL8 methylation status is associated with increased expression of IL8 in human osteoarthritic (OA) chondrocytes. METHODS IL8 expression levels and the percentage CpG methylation in human chondrocytes were quantified by qRT-PCR and pyrosequencing in OA patients and in non-OA osteoporotic controls. The effect of CpG methylation on IL8 promoter activity was determined using a CpG-free vector; co-transfections with expression vectors encoding nuclear factor-kappa B (NF-κB), AP-1 and C/EBP were subsequently undertaken to analyse for IL8 promoter activity in response to changes in methylation status. RESULTS IL8 expression in OA patients was 37-fold higher than in osteoporotic controls. Three CpG sites in the IL8 promoter were significantly demethylated in OA patients. Multiple regression analysis revealed that the degree of methylation of the CpG site located at -116-bp was the strongest predictor of IL8 expression. In vitro DNA methylation was noted to decrease IL8 promoter basal activity. Furthermore, NF-κB, AP-1 and C/EBP strongly enhanced IL8 promoter activity whilst DNA methylation inhibited the effects of these three transcription factors. CONCLUSIONS The present study demonstrates the key role of DNA methylation status on the expression of IL8 in human chondrocytes. We demonstrate a quantitative relationship between percentage methylation and gene expression within clinical samples. These studies provide direct evidence linking the activation of IL8, DNA demethylation and the induction of the OA process with important therapeutic implications therein for patients with this debilitating disease.
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Sueta D, Kaikita K, Okamoto N, Arima Y, Ishii M, Ito M, Oimatsu Y, Iwashita S, Takahashi A, Nakamura E, Hokimoto S, Mizuta H, Ogawa H. A novel quantitative assessment of whole blood thrombogenicity in patients treated with a non-vitamin K oral anticoagulant. Int J Cardiol 2015; 197:98-100. [DOI: 10.1016/j.ijcard.2015.06.041] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2015] [Accepted: 06/18/2015] [Indexed: 10/23/2022]
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Maresh JL, Adachi T, Takahashi A, Naito Y, Crocker DE, Horning M, Williams TM, Costa DP. Summing the strokes: energy economy in northern elephant seals during large-scale foraging migrations. MOVEMENT ECOLOGY 2015; 3:22. [PMID: 26380090 PMCID: PMC4570705 DOI: 10.1186/s40462-015-0049-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2015] [Accepted: 08/26/2015] [Indexed: 06/01/2023]
Abstract
BACKGROUND The energy requirements of free-ranging marine mammals are challenging to measure due to cryptic and far-ranging feeding habits, but are important to quantify given the potential impacts of high-level predators on ecosystems. Given their large body size and carnivorous lifestyle, we would predict that northern elephant seals (Mirounga angustirostris) have elevated field metabolic rates (FMRs) that require high prey intake rates, especially during pregnancy. Disturbance associated with climate change or human activity is predicted to further elevate energy requirements due to an increase in locomotor costs required to accommodate a reduction in prey or time available to forage. In this study, we determined the FMRs, total energy requirements, and energy budgets of adult, female northern elephant seals. We also examined the impact of increased locomotor costs on foraging success in this species. RESULTS Body size, time spent at sea and reproductive status strongly influenced FMR. During the short foraging migration, FMR averaged 90.1 (SE = 1.7) kJ kg(-1)d(-1) - only 36 % greater than predicted basal metabolic rate. During the long migration, when seals were pregnant, FMRs averaged 69.4 (±3.0) kJ kg(-1)d(-1) - values approaching those predicted to be necessary to support basal metabolism in mammals of this size. Low FMRs in pregnant seals were driven by hypometabolism coupled with a positive feedback loop between improving body condition and reduced flipper stroking frequency. In contrast, three additional seals carrying large, non-streamlined instrumentation saw a four-fold increase in energy partitioned toward locomotion, resulting in elevated FMRs and only half the mass gain of normally-swimming study animals. CONCLUSIONS These results highlight the importance of keeping locomotion costs low for successful foraging in this species. In preparation for lactation and two fasting periods with high demands on energy reserves, migrating elephant seals utilize an economical foraging strategy whereby energy savings from reduced locomotion costs are shuttled towards somatic growth and fetal gestation. Remarkably, the energy requirements of this species, particularly during pregnancy, are 70-80 % lower than expected for mammalian carnivores, approaching or even falling below values predicted to be necessary to support basal metabolism in mammals of this size.
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Nakamura Y, Namikawa K, Omata W, Takahashi A, Tsutsumida A, Yamazaki N. 3319 Outcomes of local treatment for malignant melanoma brain metastases: A single institution retrospective study. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31837-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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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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Takahashi A, Abe K, Usami K, Imaizumi H, Hayashi M, Okai K, Kanno Y, Tanji N, Watanabe H, Ohira H. Simple Resistance Exercise helps Patients with Non-alcoholic Fatty Liver Disease. Int J Sports Med 2015; 36:848-52. [PMID: 26090879 DOI: 10.1055/s-0035-1549853] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
To date, only limited evidence has supported the notion that resistance exercise positively impacts non-alcoholic fatty liver disease. We evaluated the effects of resistance exercise on the metabolic parameters of non-alcoholic fatty liver disease (NAFLD) in 53 patients who were assigned to either a group that performed push-ups and squats 3 times weekly for 12 weeks (exercise group; n=31) or a group that did not (control; n=22). Patients in the control group proceeded with regular physical activities under a restricted diet throughout the study. The effects of the exercise were compared between the 2 groups after 12 weeks. Fat-free mass and muscle mass significantly increased, whereas hepatic steatosis grade, mean insulin and ferritin levels, and the homeostasis model assessment-estimated insulin resistance index were significantly decreased in the exercise group. Compliance with the resistance exercise program did not significantly correlate with patient background characteristics such as age, sex, BMI and metabolic complications. These findings show that resistance exercise comprising squats and push-ups helps to improve the characteristics of metabolic syndrome in patients with non-alcoholic fatty liver disease.
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Miyazawa H, Yanagita H, Edo M, Takahashi A, Ishida Y. Relationship between toe pressure force and windlass mechanism in normal and reduced toe function cases. Physiotherapy 2015. [DOI: 10.1016/j.physio.2015.03.1884] [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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148
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Shimizu S, Momozawa Y, Takahashi A, Nagasawa T, Ashikawa K, Terada Y, Izumi Y, Kobayashi H, Tsuji M, Kubo M, Furuichi Y. A Genome-wide Association Study of Periodontitis in a Japanese Population. J Dent Res 2015; 94:555-61. [DOI: 10.1177/0022034515570315] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Periodontitis is a multifactorial disease in which bacterial, lifestyle, and genetic factors are involved. Although previous genetic association studies identified several susceptibility genes for periodontitis in European populations, there is little information for Asian populations. Here, we conducted a genome-wide association study and a replication study consisting of 2,760 Japanese periodontitis patients and 15,158 Japanese controls. Although single-nucleotide polymorphisms that surpassed a stringent genome-wide significance threshold ( P < 5 × 10−8) were not identified, we found 2 suggestive loci for periodontitis: KCNQ5 on chromosome 6q13 (rs9446777, P = 4.83 × 10−6, odds ratio = 0.82) and GPR141-NME8 at chromosome 7p14.1 (rs2392510, P = 4.17 × 10−6, odds ratio = 0.87). A stratified analysis indicated that the GPR141-NME8 locus had a strong genetic effect on the susceptibility to generalized periodontitis in Japanese individuals with a history of smoking. In conclusion, this study identified 2 suggestive loci for periodontitis in a Japanese population. This study should contribute to a further understanding of genetic factors for enhanced susceptibility to periodontitis.
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Taira K, Yazawa R, Watanabe A, Ishikawa Y, Okamoto M, Takahashi A, Asai F. Syphacia muris infection delays the onset of hyperglycemia in WBN/Kob-Lepr
fa rats, a new type 2 diabetes mellitus model. Helminthologia 2015. [DOI: 10.1515/helmin-2015-0010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Summary
Diabetes mellitus is one of the most common endocrine disorders and its continuous global increase is due to factors as population growth, urbanization, aging, and increasing prevalence of obesity and physical inactivity. The effect of pinworm infection on the development of hyperglycemia was examined in WBN/K-Lepf (fa/fa) rats, a new model of the obese type 2 diabetes mellitus (T2DM) with pancreatitis. The rats were orally administered Syphacia muris eggs (infected group) and distilled water (control group). Hyperglycemia onset in the infected group was significantly delayed compared to the control group. Neither body weight nor intake of food and water were affected by S. muris infection. This study demonstrated that S. muris infection delayed the onset of T2DM in fa/fa rats and suggested that elucidation of the underlying mechanism and relevant pathways in the helminth-mediated protection may lead to the development of a new strategy to prevent diabetes mellitus.
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Isobe K, Takahashi A, Tamura K. Cold tolerance and metabolic rate increased by cold acclimation in Drosophila albomicans from natural populations. Genes Genet Syst 2014; 88:289-300. [PMID: 24694392 DOI: 10.1266/ggs.88.289] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Cold acclimation is one of the important factors in temperature adaptation for insects needing to make rapid adjustment to the seasonal temperature changes in their living environment. In a fruit fly species, Drosophila albomicans, which has a tropical origin and currently has a wide geographic distribution extended into Asian temperate regions, cold tolerance in terms of survival time at 1℃ of adult flies reared at 25℃ was substantially improved by a cold acclimation at 20℃ for several days. Examining 29 isofemale lines from widely distributed natural populations, we observed a substantial variation in their acclimation response. However, the acclimation response was not necessarily stronger in the strains from the recently colonized temperate regions. A significantly stronger acclimation response was detected in male flies of the temperate strains when compared to those of the tropical strains. D. albomicans also showed stronger cold tolerance compared to its closely related species belonging to the D. nasuta subgroup. Among these strains, we detected a strong positive correlation between the cold tolerance change and the metabolic rate change upon the cold acclimation, suggesting their strong physiological association regulated by common genetic factors, which may have been the target of natural selection for the temperature adaptation. The response to deacclimation and reacclimation suggested that a systematic change in gene expressions is the main molecular mechanism for the cold acclimation to have effects on the cold tolerance and metabolic rate changes.
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