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Nishizaki D, Kurzrock R, Miyashita H, Adashek JJ, Lee S, Nikanjam M, Eskander RN, Patel H, Botta GP, Nesline MK, Pabla S, Conroy JM, DePietro P, Sicklick JK, Kato S. Viewing the immune checkpoint VISTA: landscape and outcomes across cancers. ESMO Open 2024; 9:102942. [PMID: 38503143 DOI: 10.1016/j.esmoop.2024.102942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 12/18/2023] [Accepted: 02/16/2024] [Indexed: 03/21/2024] Open
Abstract
BACKGROUND Optimizing immune checkpoint inhibitor (ICI) therapy may require identification of co-targetable checkpoint pathways via immune profiling. Herein, we analyzed the transcriptomic expression and clinical correlates of V-domain immunoglobulin suppressor of T-cell activation (VISTA), a promising targetable checkpoint. PATIENTS AND METHODS RNA sequencing was carried out on 514 tissues reflecting diverse advanced/metastatic cancers. Expression of eight immune checkpoint markers [lymphocyte-activation gene 3 (LAG-3), tumor necrosis factor receptor superfamily 14 (TNFRSF14), programmed cell death protein 1 (PD-1), programmed death-ligand 1 (PD-L1), programmed death-ligand 2 (PD-L2), B- and T-lymphocyte attenuator (BTLA), T-cell immunoglobulin and mucin domain-containing protein 3 (TIM-3), cytotoxic T-lymphocyte antigen 4 (CTLA-4)], in addition to VISTA, was analyzed, along with clinical outcomes. RESULTS High VISTA RNA expression was observed in 32% of tumors (66/514) and was the most common highly expressed checkpoint among the nine assessed. High VISTA expression was independently correlated with high BTLA, TIM-3, and TNFRSF14, and with a diagnosis of pancreatic, small intestine, and stomach cancer. VISTA transcript levels did not correlate with overall survival (OS) from metastatic/advanced disease in the pan-cancer cohort or with immunotherapy outcome (progression-free survival and OS from the start of ICI) in 217 ICI-treated patients. However, in ICI-treated pancreatic cancer patients (n = 16), median OS was significantly shorter (from immunotherapy initiation) for the high- versus not-high-VISTA groups (0.28 versus 1.21 years) (P = 0.047); in contrast, VISTA levels were not correlated with OS in 36 pancreatic cancer patients who did not receive ICI. CONCLUSION High VISTA expression correlates with high BTLA, TIM-3, and TNFRSF14 checkpoint-related molecules and with poorer post-immunotherapy survival in pancreatic cancer, consistent with prior literature indicating that VISTA is prominently expressed on CD68+ macrophages in pancreatic cancers and requiring validation in larger prospective studies. Immunomic analysis may be important for individualized precision immunotherapy.
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Affiliation(s)
- D Nishizaki
- Center for Personalized Cancer Therapy and Division of Hematology and Oncology, Department of Medicine, University of California San Diego, Moores Cancer Center, La Jolla.
| | - R Kurzrock
- MCW Cancer Center and Genomic Sciences and Precision Medicine Center, Medical College of Wisconsin, Milwaukee, USA; WIN Consortium, Paris, France
| | - H Miyashita
- Dartmouth Cancer Center, Hematology and Medical Oncology, Lebanon
| | - J J Adashek
- Department of Oncology, The Sidney Kimmel Comprehensive Cancer Center, The Johns Hopkins Hospital, Baltimore
| | - S Lee
- Center for Personalized Cancer Therapy and Division of Hematology and Oncology, Department of Medicine, University of California San Diego, Moores Cancer Center, La Jolla
| | - M Nikanjam
- Center for Personalized Cancer Therapy and Division of Hematology and Oncology, Department of Medicine, University of California San Diego, Moores Cancer Center, La Jolla
| | - R N Eskander
- Center for Personalized Cancer Therapy and Division of Gynecologic Oncology, Department of Obstetrics, Gynecology, and Reproductive Sciences, University of California San Diego, Moores Cancer Center, La Jolla
| | - H Patel
- Center for Personalized Cancer Therapy and Division of Hematology and Oncology, Department of Medicine, University of California San Diego, Moores Cancer Center, La Jolla
| | - G P Botta
- Center for Personalized Cancer Therapy and Division of Hematology and Oncology, Department of Medicine, University of California San Diego, Moores Cancer Center, La Jolla
| | | | | | | | | | - J K Sicklick
- Division of Surgical Oncology, Department of Surgery, Center for Personalized Cancer Therapy, University of California San Diego, La Jolla, USA
| | - S Kato
- Center for Personalized Cancer Therapy and Division of Hematology and Oncology, Department of Medicine, University of California San Diego, Moores Cancer Center, La Jolla.
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Irie H, Yoda M, Miyashita H, Hanada R, Takashima T, Kuroiwa H. Near-infrared light-inducible Z-scheme overall water-splitting photocatalyst without an electron mediator. Chem Commun (Camb) 2023; 59:11057-11060. [PMID: 37603379 DOI: 10.1039/d3cc03156j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/22/2023]
Abstract
We facilely prepared a solid-state heterojunction photocatalyst in which silver vanadium oxide (Ag2V4O11) and zinc rhodium oxide (ZnRh2O4) as oxygen and hydrogen evolution photocatalysts, respectively, were directly connected to generate Ag2V4O11/ZnRh2O4. Ag2V4O11/ZnRh2O4 photocatalyzed overall pure-water splitting without any electron mediator under irradiation with near-infrared light at wavelengths of up to 910 nm. The key points are that the conduction bottom potential of Ag2V4O11 is almost the same as the valence band top potential of ZnRh2O4, and that the bandgaps of Ag2V4O11 and ZnRh2O4 are 1.4 and 1.2 eV, respectively.
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Affiliation(s)
- Hiroshi Irie
- Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
- Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan
| | - Masaomi Yoda
- Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
| | - Hiroshi Miyashita
- Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
| | - Ryo Hanada
- Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
| | - Toshihiro Takashima
- Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
- Clean Energy Research Center, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan
| | - Haruna Kuroiwa
- Integrated Graduate School of Medicine, Engineering, and Agricultural Sciences, University of Yamanashi, 4-3-11 Takeda, Kofu, Yamanashi 400-8511, Japan.
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3
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Miyashita H, Kurzrock R, Lee S, Pabla S, Nesline M, Glenn S, Conroy J, DePietro P, Kato S. 765P Comprehensive analysis of the association between RAS mutation and immune checkpoint marker expression. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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4
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Hatano Y, Sawayama N, Miyashita H, Kurashina T, Okada K, Takahashi M, Matsumoto M, Hoshide S, Sasaki T, Nagashima S, Ebihara K, Mori H, Kario K, Ishibashi S. Sex-specific association of primary aldosteronism with visceral adiposity. J Endocr Soc 2022; 6:bvac098. [PMID: 35822200 PMCID: PMC9268741 DOI: 10.1210/jendso/bvac098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Indexed: 11/19/2022] Open
Abstract
Context The association between primary aldosteronism and obesity, especially its sex difference, remains unknown. Objective To assess the association for each subtype of primary aldosteronism with obesity parameters including visceral adipose tissue and differences between sexes. Methods In this case-control study, 4 normotensive controls were selected for each case with primary aldosteronism. Multivariable conditional logistic regression models were used to estimate the association between each type of primary aldosteronism and obesity indicators. We used a random forest to identify which visceral or subcutaneous tissue areas had a closer association with disease status. Results The study subjects included 42 aldosterone-producing adenoma cases (22 women) and 68 idiopathic hyperaldosteronism cases (42 women). In multivariable conditional logistic regressions, aldosterone-producing adenoma was significantly associated with body mass index only in men (odds ratio [OR] [95% CI)], 4.62 [1.98-10.80] per 2.89 kg/m2) but not in women (OR [95% CI], 1.09 [0.69-1.72] per 3.93 kg/m2) compared with the matched controls, whereas idiopathic hyperaldosteronism was associated with body mass index in both men (OR [95% CI], 3.96 [2.03-7.73] per 3.75 kg/m2) and women (OR [95% CI], 2.65 [1.77-3.96] per 3.85 kg/m2) compared with the matched controls. In random forests, visceral adipose tissue areas were the better predictor of both aldosterone-producing adenoma and idiopathic hyperaldosteronism than subcutaneous adipose tissue. Conclusions Aldosterone-producing adenoma cases were obese among men, but not among women. Idiopathic hyperaldosteronism cases were obese among both men and women. Visceral adipose tissue may contribute to the pathophysiology of primary aldosteronism.
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Affiliation(s)
- Yu Hatano
- Department of Family Medicine and Community Health, Duke University, 2200 West Main Street , Durham, NC, 27705 USA
| | - Nagisa Sawayama
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University , 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Hiroshi Miyashita
- Jichi Medical University Health Care Center, 2-35 Gion, Shimotsuke-shi , Tochigi-ken 329-0493, Japan
| | - Tomoyuki Kurashina
- School of Nursing, Jichi Medical University, 3311-1 Yakushiji , Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Kenta Okada
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University , 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Manabu Takahashi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University , 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Masatoshi Matsumoto
- Department of Community-Based Medical System, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku , Hiroshima 734-8551, Japan
| | - Satoshi Hoshide
- Division of Cardiology, Department of Internal Medicine, Jichi Medial University , 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Takahiro Sasaki
- Department of Radiology, Jichi Medial University, 3311-1 Yakushiji , Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Shuichi Nagashima
- Department of Endocrinology and Metabolism, Jichi Medical University Saitama Medical center, 1-847 Amanumacho , Omiya-ku, Saitama-shi, Saitama-ken 330-8503, Japan
| | - Ken Ebihara
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University , 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Harushi Mori
- Department of Radiology, Jichi Medial University, 3311-1 Yakushiji , Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Kazuomi Kario
- Division of Cardiology, Department of Internal Medicine, Jichi Medial University , 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
| | - Shun Ishibashi
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Jichi Medical University , 3311-1 Yakushiji, Shimotsuke-shi, Tochigi-ken 329-0498, Japan
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Takenaka T, Ohno Y, Eguchi K, Miyashita H, Suzuki H, Shimada K. Central and brachial pulse pressure predicts cardiovascular and renal events in treated hypertensive patients. Blood Press 2022; 31:64-70. [PMID: 35438015 DOI: 10.1080/08037051.2022.2062295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
PURPOSES Central blood pressure is a stronger predictor of cardiovascular prognosis rather than brachial blood pressure. The reflection wave reaches the abdominal aorta sooner than ascending aorta. Thus, the contribution of central pulse pressure (cPP) to renal events may differ from that of cardiovascular events. METHODS The subanalysis of the ABC-J II study was performed. Subjects were 3434 treated hypertensive patients with a mean follow-up of 4.7 years. Left ventricular hypertrophy, an index of cardiovascular risk, correlated with cPP better than central systolic blood pressure in this cohort. The contribution of brachial pulse pressure (bPP) and cPP to cardiovascular and renal events was analysed. RESULTS Cox proportional-hazard analysis revealed that sex (p < 0.001), height (p < 0.05), history of cardiovascular diseases (p < 0.001), number of antihypertensive drugs (p < 0.05), and cPP (p < 0.05) contributed to cardiovascular events. However, Cox proportional-hazard analysis disclosed that baseline serum creatinine (p < 0.001) and bPP (p < 0.05) predicted renal events. After adjusting for the history of cardiovascular diseases, Cox regression demonstrated only sex as a significant predictor of cardiovascular events. After adjusting for baseline serum creatinine, no parameters were shown to predict renal events. CONCLUSIONS The present findings support our previous data that the absence of cardiovascular or renal diseases is an important determinant for event-free survival, and suggest that cPP and bPP contribute to cardiovascular and renal events in treated hypertensive patients.
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Affiliation(s)
- Tsuneo Takenaka
- Kokusai Iryo Fukushi Daigaku, Nephrology, Minato-ku, Tokyo, Japan
| | - Yoichi Ohno
- Saitama Ika Daigaku, Nephrology, Iruma-gun, Saitama, Japan
| | - Kazuo Eguchi
- Jichi Ika Daigaku Fuzoku Byoin, Cardiology, Shimotsuke, Tochigi, Japan
| | - Hiroshi Miyashita
- Jichi Ika Daigaku Fuzoku Byoin, Cardiology, Shimotsuke, Tochigi, Japan
| | | | - Kazuyuki Shimada
- Jichi Ika Daigaku Fuzoku Byoin, Cardiology, Shimotsuke, Tochigi, Japan
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Munakata K, Miyashita H, Nakahara T, Shiba H, Sugahara K, Katakura A, Nakagawa T. The use of SPECT/CT to assess resorptive activity in mandibular condyles. Int J Oral Maxillofac Surg 2021; 51:942-948. [PMID: 34937677 DOI: 10.1016/j.ijom.2021.11.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 08/30/2021] [Accepted: 11/26/2021] [Indexed: 12/20/2022]
Abstract
The aim of this study was to clarify the clinical significance of bone metabolism in the mandibular condyles in determining condylar resorptive changes. Twelve condyles of patients with idiopathic condylar resorption and degenerative joint disease were analysed using 99mTc HMDP SPECT/CT at baseline and subsequent computed tomography during the follow-up period. Twenty-two healthy condyles were enrolled as controls. After generating three-dimensional SPECT/CT images, two independent observers scored the degree of condylar uptake and measured the morphological changes in the condylar height and condylar volume. In the group with positive condylar uptake, the follow-up computed tomography showed significant decreases in condylar height (-1.69 ± 0.93 mm) and condylar volume (-12.51 ± 10.30%) when compared to healthy controls (condylar height, 0.09 ± 0.54 mm; condylar volume, -0.29 ± 4.22%) (P < 0.001). Moreover, the degree of uptake correlated with the changes in condylar height (observer 1, P = 0.012; observer 2, P = 0.039) and condylar volume (observer 1, P = 0.005; observer 2, P = 0.037). These results suggest that condylar bone metabolism is closely related to the resorptive activity. Thus, SPECT/CT would be useful in the prognostic evaluation or determination of treatment strategies for idiopathic condylar resorption and degenerative joint disease.
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Affiliation(s)
- K Munakata
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Miyashita
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.
| | - T Nakahara
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | - H Shiba
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Sugahara
- Department of Oral Pathobiological Science and Surgery, Tokyo Dental College, Tokyo, Japan
| | - A Katakura
- Department of Oral Pathobiological Science and Surgery, Tokyo Dental College, Tokyo, Japan
| | - T Nakagawa
- Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
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7
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Miyashita H, Kurzrock R, Lee S, Bevins N, Pabla S, Nesline M, Glenn S, Conroy J, DePietro P, Kato S. 992P Pan-cancer T-cell priming transcriptomic markers reveals interpatient immunomic heterogeneity independent of histologic type. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.1376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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8
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Miyashita H, Kuno T. Prognosis of coronavirus disease 2019 (COVID-19) in patients with HIV infection in New York City. HIV Med 2020; 22:e1-e2. [PMID: 32829525 PMCID: PMC7461410 DOI: 10.1111/hiv.12920] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 05/30/2020] [Accepted: 06/25/2020] [Indexed: 12/28/2022]
Affiliation(s)
- H Miyashita
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, New York, NY, USA
| | - T Kuno
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, New York, NY, USA
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9
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Yoshida K, Yokota K, Kutsuwada Y, Nakayama K, Watanabe K, Matsumoto A, Miyashita H, Khor SS, Tokunaga K, Kawai Y, Nagasaki M, Iwamoto S. Genome-Wide Association Study of Lean Nonalcoholic Fatty Liver Disease Suggests Human Leukocyte Antigen as a Novel Candidate Locus. Hepatol Commun 2020; 4:1124-1135. [PMID: 32766473 PMCID: PMC7395061 DOI: 10.1002/hep4.1529] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 04/10/2020] [Accepted: 04/14/2020] [Indexed: 12/28/2022] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) is supposed to manifest its metabolic phenotype in the liver, but it is common to have lean individuals diagnosed with NAFLD, known as lean NAFLD. We conducted a two-stage analysis to identify NAFLD-associated loci in Japanese patients. In stage I, 275 metabolically healthy normal-weight patients with NAFLD were compared with 1,411 non-NAFLD controls adjusted for age, sex, and alcohol consumption by a genome-wide association study (GWAS). In stage II, human leukocyte antigen (HLA) in chromosome 6 (chr6) (P = 6.73E-08), microRNA (MIR) MIR548F3 in chr7 (P = 4.25E-07), myosin light chain 2 (MYL2) in chr12 (P = 4.39E-07), and glycoprotein precursor (GPC)6 in chr13 (P = 5.43E-07), as suggested by the GWAS, were assessed by single nucleotide polymorphism (SNP) association analysis of whole NAFLD against non-NAFLD in 9,726 members of the general population. A minor allele of the secondary lead SNP in chr6, rs2076529, was significantly associated (odds ratio [OR], 1.19; 95% confidence interval [CI], 1.11-1.28; P = 2.10E-06) and the lead SNP in chr7 was weakly associated (OR 1.15; 95% CI, 1.04-1.27; P = 6.19E-03) with increased NAFLD risk. Imputation-based typing of HLA showed a significant difference in the distribution of HLA-B, HLA-DR-beta chain 1 (DRB1), and HLA-DQ-beta chain 1 (DQB1) alleles in lean NAFLD GWAS. Next-generation sequence-based typing of HLA in 5,649 members of the general population replicated the significant difference of HLA-B allele distribution and the significant increase of the HLA-B*54:01 allele in whole NAFLD. Fecal metagenomic analysis of 3,420 members of the general population showed significant dissimilarity in beta-diversity analysis of rs2076529 and HLA-B*54:01 allele carriers from noncarriers. Veillonellaceae was increased but Verrucomicrobia was decreased in rs2076529 minor allele and HLA-B*54:01 allele carriers as in NAFLD. Conclusion: HLA was identified as a novel locus associated with NAFLD susceptibility, which might be affected by the alteration of gut microbiota.
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Affiliation(s)
- Ken Yoshida
- Division of Human Genetics Center for Molecular Medicine Jichi Medical University Shimotsuke Japan
| | - Kazuha Yokota
- Division of Human Genetics Center for Molecular Medicine Jichi Medical University Shimotsuke Japan
| | - Yukinobu Kutsuwada
- Division of Human Genetics Center for Molecular Medicine Jichi Medical University Shimotsuke Japan.,Forensic Science Laboratory Tochigi Prefecture Police Headquarters Utsunomiya Japan
| | - Kazuhiro Nakayama
- Division of Human Genetics Center for Molecular Medicine Jichi Medical University Shimotsuke Japan.,Laboratory of Evolutionary Anthropology Department of Integrated Biosciences Graduate School of Frontier Sciences University of Tokyo Kashiwa Japan
| | - Kazuhisa Watanabe
- Division of Human Genetics Center for Molecular Medicine Jichi Medical University Shimotsuke Japan
| | - Ayumi Matsumoto
- Division of Human Genetics Center for Molecular Medicine Jichi Medical University Shimotsuke Japan
| | | | - Seik-Soon Khor
- Genome Medical Science Project National Center for Global Health and Medicine Tokyo Japan.,Department of Human Genetics Graduate School of Medicine University of Tokyo Tokyo Japan
| | - Katsushi Tokunaga
- Genome Medical Science Project National Center for Global Health and Medicine Tokyo Japan.,Department of Human Genetics Graduate School of Medicine University of Tokyo Tokyo Japan
| | - Yosuke Kawai
- Genome Medical Science Project National Center for Global Health and Medicine Tokyo Japan.,Department of Human Genetics Graduate School of Medicine University of Tokyo Tokyo Japan
| | - Masao Nagasaki
- Tohoku Medical Megabank Organization Tohoku University Sendai Japan.,Center for the Promotion of Interdisciplinary Education and Research Kyoto University Kyoto Japan
| | - Sadahiko Iwamoto
- Division of Human Genetics Center for Molecular Medicine Jichi Medical University Shimotsuke Japan
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Miyashita H, Mikami T, Chopra N, Yamada T, Chernyavsky S, Rizk D, Cruz C. Do patients with cancer have a poorer prognosis of COVID-19? An experience in New York City. Ann Oncol 2020; 31:1088-1089. [PMID: 32330541 PMCID: PMC7172785 DOI: 10.1016/j.annonc.2020.04.006] [Citation(s) in RCA: 286] [Impact Index Per Article: 71.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Accepted: 04/10/2020] [Indexed: 02/06/2023] Open
Affiliation(s)
- H Miyashita
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, NY, USA.
| | - T Mikami
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, NY, USA
| | - N Chopra
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, NY, USA
| | - T Yamada
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, NY, USA
| | - S Chernyavsky
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, NY, USA
| | - D Rizk
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, NY, USA
| | - C Cruz
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Beth Israel, NY, USA
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Yokota S, Tobita K, Hayashi T, Mashimo Y, Miyashita H, Yokoyama H, Nishimoto T, Shishido K, Yamanaka F, Mizuno S, Murakami M, Tanaka Y, Takahashi S, Saito S. P6524The comparison of radial artery occlusion rate after distal radial artery puncture between hemodialysis and non-hemodialysis patients. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
In recent years it has been attempted to use a distal radial artery (DRA) as a puncture site for cardiac catheterization and intervention. A patency of radial artery is important in hemodialysis patients because the radial artery is source as an arteriovenous shunt. However, the incidence of radial artery occlusion (RAO) is not known after DRA puncture.
Purpose
To compare RAO rates after DRA puncture between dialysis and non-dialysis patients.
Method
This was retrospective, observational and single center study. All consecutive 1,533 patients undergoing DRA puncture were analyzed. The primary endpoint is RAO rates. The secondary endpoint is composite bleeding adverse event rates. These endpoints were evaluated by a vascular echocardiography several hours or the next day after the procedure.
Result
Among 1,533 patients, 26 were dialysis patients and 1,504 were non-dialysis patients. 1,386 people (90.5%) succeeded in puncture. Radial artery occlusion occurred in 7 patients (0.4%), all of whom were non-dialysis patients. There was no significant difference of RAO rate in dialysis patients and non-dialysis patients.
Conclusion
When performing DRA puncture, the probability of radial artery occlusion is not higher in dialysis patients than non-dialysis patients. The DRA puncture may be one of the option as puncture site even in dialysis patients.
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Affiliation(s)
- S Yokota
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - K Tobita
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - T Hayashi
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - Y Mashimo
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - H Miyashita
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - H Yokoyama
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - T Nishimoto
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - K Shishido
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - F Yamanaka
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - S Mizuno
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - M Murakami
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - Y Tanaka
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - S Takahashi
- Shonan Kamakura General Hospital, Kamakura, Japan
| | - S Saito
- Shonan Kamakura General Hospital, Kamakura, Japan
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Ouchi T, Morikawa S, Shibata S, Takahashi M, Yoshikawa M, Soma T, Miyashita H, Muraoka W, Kameyama K, Kawana H, Arima Y, Saya H, Okano H, Nakagawa T, Asoda S. Recurrent Spindle Cell Carcinoma Shows Features of Mesenchymal Stem Cells. J Dent Res 2018; 97:779-786. [PMID: 29494307 DOI: 10.1177/0022034518759278] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study investigated a case of spindle cell carcinoma (SpCC) in tongue pathological lesions. The patient experienced a local recurrence and distant metastasis after surgical intervention. Although standard chemotherapy was administered, a granulomatous mass continued to develop. This aggressive growth led to survival of the tumor. Secondary debulking surgery was performed to improve the patient's quality of life at the request of the patient. Using a tissue sample derived from the secondary debulking surgery, we performed an analysis of the tumor's cell surface antigens, differentiation potential, metastatic ability, and inhibition potential by anticancer reagents. In vitro analysis revealed that the cell population grown under adherent culture conditions expressed the mesenchymal stem cell (MSC) markers CD73, CD90, and CD105. The cell line established from this SpCC contained colony-forming unit fibroblasts (CFU-Fs) and exhibited multipotent differentiation into several mesenchymal lineages, including bone, cartilage, and fat. The SpCC cells also displayed vigorous mobilization. These characteristics suggested that they had the differentiation potential of mesenchymal cells, especially MSCs, rather than that of epithelial cells. The surgical specimen analyzed in this study resisted the molecular target reagent cetuximab, which is an epidermal growth factor receptor inhibitor. This clinical insight revealed that chemotherapy-resistant SpCC cells have different characteristics compared to most other cancer cells, which are sensitive to cetuximab. Our cell death assay revealed that SpCC cell death was induced by the anticancer drug imatinib, which is known to inhibit protein tyrosine kinase activity of ABL, platelet-derived growth factor receptor α (PDGFRα), and KIT. Here, we report recurrent SpCC with characteristics of MSCs and potential for treatment with imatinib.
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Affiliation(s)
- T Ouchi
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.,2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - S Morikawa
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.,2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - S Shibata
- 2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - M Takahashi
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - M Yoshikawa
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan.,3 Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - T Soma
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Miyashita
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - W Muraoka
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - K Kameyama
- 4 Division of Diagnostic Pathology, Keio University School of Medicine, Tokyo, Japan
| | - H Kawana
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Y Arima
- 3 Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - H Saya
- 3 Division of Gene Regulation, Institute for Advanced Medical Research, Keio University School of Medicine, Tokyo, Japan
| | - H Okano
- 2 Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - T Nakagawa
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - S Asoda
- 1 Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
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Takenaka T, Suzuki H, Eguchi K, Miyashita H, Shimada K. Elevated pulse amplification in hypertensive patients with advanced kidney disease. Hypertens Res 2018; 41:299-307. [DOI: 10.1038/s41440-017-0010-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/15/2017] [Accepted: 09/12/2017] [Indexed: 01/30/2023]
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Mieda M, Miyashita H, Osawa H, Hirasawa T, Makino N, Toma S, Tomiyama T, Miura Y, Lefor AK, Yamamoto H. Risk factors for nasal bleeding in patients undergoing transnasal gastrointestinal endoscopy. Kaohsiung J Med Sci 2018; 34:295-300. [PMID: 29699637 DOI: 10.1016/j.kjms.2017.11.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Revised: 08/16/2017] [Accepted: 11/29/2017] [Indexed: 11/26/2022] Open
Abstract
Transnasal endoscopy is widely used in screening for upper gastrointestinal lesions because of less associated pain. Nasal bleeding is the most severe adverse effect, but specific risk factors have not been identified. The aim of this study is to identify risk factors for nasal bleeding during transnasal endoscopy. Nasal bleeding occurred in 160/3035 (5.3%) of patients undergoing transnasal endoscopy as part of health checkups. Patient data were retrospectively evaluated including anthropometric, medical, and life-style parameters with multiple logistic regression analysis. Multiple logistic regression revealed that nasal bleeding was significantly associated with age in decades [odds ratio/10 years 0.78, 95% confidence interval (CI) 0.63-0.97, p = 0.027], female gender (2.15, 95% CI 1.48-3.12, p < 0.001), a history of previous upper gastrointestinal endoscopy (0.55, 95% CI 0.36-0.82, p = 0.004), and chronic/allergic rhinitis (0.60, 95% CI 0.36-0.98, p = 0.043). Other factors including the use of antiplatelet and/or anticoagulant drugs were not significantly associated with nasal bleeding. Female and young patients are significantly associated with an increased risk of bleeding from transnasal endoscopy, but antiplatelet and/or anticoagulant medications and a history of chronic/allergic rhinitis may not be associated.
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Affiliation(s)
- Mitsuyo Mieda
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan; Health Care Center, Jichi Medical University, Shimotsuke, Japan
| | | | - Hiroyuki Osawa
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan.
| | - Tomosuke Hirasawa
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Nobuko Makino
- Department of Public Health, Jichi Medical University, Shimotsuke, Japan
| | - Sachiko Toma
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan; Health Care Center, Jichi Medical University, Shimotsuke, Japan
| | - Takeshi Tomiyama
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan; Health Care Center, Jichi Medical University, Shimotsuke, Japan
| | - Yoshimasa Miura
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
| | - Alan K Lefor
- Department of Surgery, Jichi Medical University, Shimotsuke, Japan
| | - Hironori Yamamoto
- Department of Internal Medicine, Division of Gastroenterology, Jichi Medical University, Shimotsuke, Japan
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15
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Boonvisut S, Yoshida K, Nakayama K, Watanabe K, Miyashita H, Iwamoto S. Identification of deleterious rare variants in MTTP, PNPLA3, and TM6SF2 in Japanese males and association studies with NAFLD. Lipids Health Dis 2017; 16:183. [PMID: 28950858 PMCID: PMC5615465 DOI: 10.1186/s12944-017-0570-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Accepted: 09/18/2017] [Indexed: 02/07/2023] Open
Abstract
Background Non-alcoholic fatty liver disease (NAFLD) is a disorder characterized by excessive fat deposits in hepatocytes without excessive alcohol intake. NAFLD is influenced by genetic factors, and the heritability has been estimated at 0.35 to 0.6 by twin studies. We explored rare variants in known NAFLD-associated genes to investigate whether these rare variants are involved in the susceptibility to NAFLD. Methods The target genes for re-sequencing were PNPLA3, TM6SF2, and MTTP. All exons of these three genes were amplified from a discovery panel of 950 Japanese males, and the identified rare variants were further tested for genetic association in 3014 individuals from the Japanese general population and for in vitro functional evaluation. Results Target re-sequencing analysis using next-generation sequencing identified 29 rare variants in 65 Japanese males (6.84%), 12 of which were newly identified base substitutions. A splicing mutation in TM6SF2 that resulted in deletion of 31 amino acids was identified in an NAFLD case. Among eight genotyped rare single-nucleotide polymorphisms (SNPs; minor allele frequency < 0.02), rs143392071 (Tyr220Cys, PNPLA3) significantly increased (odds ratio = 3.52, P = 0.008) and rs756998920 (Val42Ile, MTTP) significantly decreased (odds ratio = 0.03, P = 0.019) the NAFLD risk. Functional assays showed that these two SNPs disrupted protein functions and supported the genetic association. Conclusion Collectively, 1.79% of individuals in our studied population were estimated carriers of rare variants that are potentially associated with NAFLD. Electronic supplementary material The online version of this article (10.1186/s12944-017-0570-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Supichaya Boonvisut
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.,The Chulabhorn Graduate Institute, 54 Kamphangphet 6 Road, Laksi, Bangkok, 10210, Thailand
| | - Ken Yoshida
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Kazuhiro Nakayama
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Kazuhisa Watanabe
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Hiroshi Miyashita
- Jichi Medical University Health Care Center, Shimotsuke, Tochigi, 329-0498, Japan
| | - Sadahiko Iwamoto
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
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Ishikawa Y, Nakayama K, Morimoto M, Mizutani A, Nakayama A, Toyoshima K, Hayashi A, Takagi S, Dairiki R, Miyashita H, Matsumoto S, Gamo K, Nomura T, Nakamura K. Synergistic anti-AML effects of the LSD1 inhibitor T-3775440 and the NEDD8-activating enzyme inhibitor pevonedistat via transdifferentiation and DNA rereplication. Oncogenesis 2017; 6:e377. [PMID: 28892104 PMCID: PMC5623902 DOI: 10.1038/oncsis.2017.76] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Revised: 06/18/2017] [Accepted: 07/11/2017] [Indexed: 12/12/2022] Open
Abstract
Lysine-specific demethylase 1A (LSD1, KDM1A) specifically demethylates di- and monomethylated histones H3K4 and K9, resulting in context-dependent transcriptional repression or activation. We previously identified an irreversible LSD1 inhibitor T-3775440, which exerts antileukemic activities in a subset of acute myeloid leukemia (AML) cell lines by inducing cell transdifferentiation. The NEDD8-activating enzyme inhibitor pevonedistat (MLN4924, TAK-924) is an investigational drug with antiproliferative activities in AML, and is also reported to induce cell differentiation. We therefore tested the combination of these two agents in AML models. The combination treatment resulted in synergistic growth inhibition of AML cells, accompanied by enhanced transdifferentiation of an erythroid leukemia lineage into granulomonocytic-like lineage cells. In addition, pevonedistat-induced rereplication stress during the S phase was greatly augmented by concomitant treatment with T-3775440, as reflected by the increased induction of apoptosis. We further demonstrated that the combination treatment was markedly effective in subcutaneous tumor xenograft models as well as in a disseminated model of AML, leading to tumor eradication or prolonged survival in T-3775440/pevonedistat cotreated mice. Our findings indicate the therapeutic potential of the combination of LSD1 inhibitors and pevonedistat for the treatment of AML.
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Affiliation(s)
- Y Ishikawa
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Nakayama
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - M Morimoto
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - A Mizutani
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - A Nakayama
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Toyoshima
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - A Hayashi
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - S Takagi
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - R Dairiki
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - H Miyashita
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - S Matsumoto
- Integrated Technology Research Laboratories, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Gamo
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - T Nomura
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
| | - K Nakamura
- Oncology Drug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, Fujisawa, Japan
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Nakayama K, Saito S, Watanabe K, Miyashita H, Nishijima F, Kamo Y, Tada K, Ishizuka S, Niwa T, Iwamoto S, Shimizu H. Influence of AHRR Pro189Ala polymorphism on kidney functions. Biosci Biotechnol Biochem 2017; 81:1120-1124. [DOI: 10.1080/09168451.2017.1292838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Abstract
The function of aryl hydrocarbon receptor repressor (AHRR) in the kidney is unclear. The present study investigated associations between AHRR Pro189Ala polymorphism and estimated glomerular filtration rates (eGFR), serum creatinine, and hemoglobin levels in 2775 Japanese adults without diabetes. In addition, we examined whether AHRR expression levels in the kidney of control and chronic kidney disease (CKD) rats were changed. Multiple linear regression analyses showed that carriers of the Ala allele had increased eGFR and lower concentrations of serum creatinine and hemoglobin (p < 0.05). Immunohistochemical analysis showed that the expression of AHRR was upregulated in the kidneys of rats with CKD. These findings suggest that AHRR plays distinct roles in kidney functions and hemoglobin values. The effects of the AHRR polymorphism might be intensified in the kidneys of patients with CKD.
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Affiliation(s)
- Kazuhiro Nakayama
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Shinichi Saito
- Department of Advanced Medicine for Uremia, Nagoya University Graduate School of Medicine, Aichi, Japan
- Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
| | - Kazuhisa Watanabe
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | | | | | - Yoshie Kamo
- Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
| | - Koji Tada
- Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
| | - Satoshi Ishizuka
- Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
| | - Toshimitsu Niwa
- Department of Advanced Medicine for Uremia, Nagoya University Graduate School of Medicine, Aichi, Japan
- Faculty of Health and Nutrition, Shubun University, Aichi, Japan
| | - Sadahiko Iwamoto
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan
| | - Hidehisa Shimizu
- Department of Advanced Medicine for Uremia, Nagoya University Graduate School of Medicine, Aichi, Japan
- Division of Applied Bioscience, Research Faculty of Agriculture, Hokkaido University, Hokkaido, Japan
- Faculty of Life and Environmental Science, Department of Life Science and Biotechnology, Shimane University, Shimane, Japan
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Miyashita H. The time is ripe to reevaluate the second derivative of the digital photoplethysmogram (SDPTG), originating in Japan, as an important tool for cardiovascular risk and central hemodynamic assessment. Hypertens Res 2017; 40:429-431. [DOI: 10.1038/hr.2016.175] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Kouketsu A, Nogami S, Mori S, Yamauchi K, Miyashita H, Kawai T, Takahashi T. Clinical evaluations of complete autologous fibrin glue, produced by the CryoSeal ® FS System, and polyglycolic acid sheets as wound coverings after oral surgery. Int J Oral Maxillofac Surg 2017. [DOI: 10.1016/j.ijom.2017.02.1168] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
BACKGROUND There is a range of treatment options for the management of the pulp in extensively decayed teeth. These include direct and indirect pulp capping, pulpotomy or pulpectomy. If the tooth is symptomatic or if there are periapical bone changes, then endodontic treatment is required. However, if the tooth is asymptomatic but the caries is extensive, there is no consensus as to the best method of management. In addition, there has been a recent move towards using alternative materials and methods such as the direct or indirect placement of bonding agents and mineral trioxide aggregate.Most studies have investigated the management of asymptomatic carious teeth with or without an exposed dental pulp using various capping materials (e.g. calcium hydroxide, Ledermix, Triodent, Biorex, etc.). However, there is no long term data regarding the outcome of management of asymptomatic, carious teeth according to different regimens. OBJECTIVES This study aims to assess the effectiveness of techniques used to treat asymptomatic carious teeth and maintain pulp vitality. SEARCH METHODS Electronic searches of the following databases were undertaken: The Cochrane Oral Health Group's Trials Register (March 2006), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2006, Issue 1), MEDLINE (1966 to week 4, February 2006), EMBASE (1974 to 13 March 2006), National Research Register (March 2006), Science Citation Index - SCISEARCH (1981 to March 2006). Detailed search strategies were developed for each database. Handsearching and screening of reference lists were undertaken. There was no restriction with regard to language of publication. SELECTION CRITERIA Studies included were randomised controlled trials (RCTs). Asymptomatic vital permanent teeth with extensive caries were included. Studies were those which compared techniques to maintain pulp vitality. Outcome measures included clinical success and adverse events. DATA COLLECTION AND ANALYSIS Data were independently extracted by three review authors. Authors were contacted for details of randomisation and withdrawals and a quality assessment was carried out. The Cochrane Collaboration's statistical guidelines were followed. MAIN RESULTS Only four RCTs were identified. Interventions examined included: Ledermix, glycerrhetinic acid/antibiotic mix, zinc oxide eugenol, calcium hydroxide, Cavitec, Life, Dycal, potassium nitrate, dimethyl isosorbide, and polycarboxylate cement. Only one study showed a statistically significant finding; potassium nitrate/dimethyl isosorbide/polycarboxylate cement resulted in fewer clinical symptoms than potassium nitrate/polycarboxylate cement or polycarboxylate cement alone when used as a capping material for carious pulps. AUTHORS' CONCLUSIONS It was disappointing that there were so few studies which could be considered as being suitable for inclusion in this review. The findings from this review do not suggest that there should be any significant change from accepted conventional practice procedures when the pulp of the carious tooth is considered. Further well designed RCTs are needed to investigate the potential of contemporary materials which may be suitable when used in the management of carious teeth. It is recognised that it is difficult to establish the 'ideal' clinical study when ethical approval for new materials must be sought and strict attention to case selection, study protocol and interpretation of data is considered. It is also not easy to recruit sufficient numbers of patients meeting the necessary criteria.
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Affiliation(s)
- Hiroshi Miyashita
- EPSDC (Endo Perio Specialist Dental Clinic/ Enhancing the Patient Supporting Dental Care)DentistryAoyama‐Marutake bdg 8F3‐1‐36 Minami‐AoyamaMinato‐Ku, TokyoJapan107‐0062
| | - Helen V Worthington
- Division of Dentistry, School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of ManchesterCochrane Oral HealthJR Moore BuildingOxford RoadManchesterUKM13 9PL
| | - Alison Qualtrough
- School of Medical Sciences, Faculty of Biology, Medicine and Health, The University of ManchesterOperative Dentistry and Endodontology, Division of DentistryOxford RoadManchesterUKM13 9PL
| | - Alphons Plasschaert
- Radboud University Nijmegen Medical CenterDepartment of Preventative and Curative DentistryPO Box 9101NijmegenNetherlands6500 HB
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Eguchi K, Miyashita H, Takenaka T, Tabara Y, Tomiyama H, Dohi Y, Hashimoto J, Ohkubo T, Kario K, Takazawa K, Yamashina A, Shimada K. OS 17-06 DOES CENTRAL BLOOD PRESSURE PREDICT CARDIOVASCULAR PROGNOSIS IN TREATED HYPERTENSIVES? THE ABC-J FOLLOW-UP STUDY. J Hypertens 2016. [DOI: 10.1097/01.hjh.0000500489.52749.58] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Boonvisut S, Nakayama K, Makishima S, Watanabe K, Miyashita H, Lkhagvasuren M, Kagawa Y, Iwamoto S. Replication analysis of genetic association of the NCAN-CILP2 region with plasma lipid levels and non-alcoholic fatty liver disease in Asian and Pacific ethnic groups. Lipids Health Dis 2016; 15:8. [PMID: 26758378 PMCID: PMC4711176 DOI: 10.1186/s12944-016-0181-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2015] [Accepted: 01/08/2016] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The Neurocan-cartilage intermediate layer protein 2 (NCAN-CILP2) region forms a tight linkage disequilibrium (LD) block and is associated with plasma lipid levels and non-alcoholic fatty liver disease (NAFLD) in individuals of European descent but not in the Malay and Japanese ethnic groups. Recent genome-wide resequence studies identified a missense single-nucleotide polymorphism (SNP) (rs58542926) of the transmembrane 6 superfamily member 2 (TM6SF2) gene in the NCAN-CILP2 region related to hepatic triglyceride content. This study aims to analyze the influences of SNPs in this region on NAFLD and plasma lipid levels in the Asian and Pacific ethnic groups and to reveal the reasons behind positive and negative genetic associations dependent on ethnicity. METHODS Samples and characteristic data were collected from 3,013 Japanese, 119 Palauan, 947 Mongolian, 212 Thai and 401 Chinese people. Hepatic sonography data was obtained from the Japanese individuals. Genotyping data of five SNPs, rs58542926, rs735273, rs1009136, rs1858999, and rs16996148, were used to verify the effect on serum lipid levels by multiple linear regression, and the association with NAFLD in the Japanese population was examined by logistic regression analysis. RESULTS rs58542926 showed significant association with the plasma triglyceride (TG) level in Japanese (P = 0.0009, effect size = 9.5 (± 3.25) mg/dl/allele) and Thai (P = 0.0008, effect size = 31.6 (± 11.7) mg/dl/allele) study subjects. In Mongolian individuals, there was a significant association of rs58542926 with total cholesterol level (P = 0.0003, 11.7 (± 3.2) mg/dl/allele) but not with TG level. In multiple comparisons in Chinese individuals, rs58542926 was weakly (P = 0.022) associated with TG levels, although the threshold for statistical significance was not reached. In Palauan individuals, there was no significant association with the studied SNPs. rs58542926 also showed significant association with Japanese NAFLD. The minor allele (t) increased NAFLD risk (OR 1.682, 95 % CI 1.289-2.196, p value 0.00013). CONCLUSION This study confirmed the genetic association of missense SNP of TM6SF2, rs58542926, with plasma lipid levels in multiple East Asian ethnic groups and with NAFLD in Japanese individuals.
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Affiliation(s)
- Supichaya Boonvisut
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Kazuhiro Nakayama
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Saho Makishima
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Kazuhisa Watanabe
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Hiroshi Miyashita
- Jichi Medical University Health Care Center, Shimotsuke, Tochigi, 329-0498, Japan.
| | - Munkhtulga Lkhagvasuren
- School of Medicine, Mongolian National University, Bayagol district, 11th khoroo, Ulaanbaatar-city, Mongolia.
| | - Yasuo Kagawa
- High Technology Research Center, Kagawa Nutrition University, Sakado, Saitama, 350-0288, Japan.
| | - Sadahiko Iwamoto
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.
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Fukushima T, Eguchi K, Ohkuchi A, Miyashita H, Kario K. Changes in Central Hemodynamics in Women With Hypertensive Pregnancy Between Before and After Delivery. J Clin Hypertens (Greenwich) 2015; 18:329-36. [DOI: 10.1111/jch.12670] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Revised: 07/09/2015] [Accepted: 07/12/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Taishi Fukushima
- Division of Cardiovascular Medicine; Department of Medicine; Jichi Medical University School of Medicine; Tochigi Japan
| | - Kazuo Eguchi
- Division of Cardiovascular Medicine; Department of Medicine; Jichi Medical University School of Medicine; Tochigi Japan
| | - Akihide Ohkuchi
- Department of Obstetrics and Gynecology; Jichi Medical University School of Medicine; Tochigi Japan
| | - Hiroshi Miyashita
- Division of Cardiovascular Medicine; Department of Medicine; Jichi Medical University School of Medicine; Tochigi Japan
| | - Kazuomi Kario
- Division of Cardiovascular Medicine; Department of Medicine; Jichi Medical University School of Medicine; Tochigi Japan
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Miyashita H, Shiba H, Kawana H, Nakahara T. Clinical utility of three-dimensional SPECT/CT imaging as a guide for the resection of medication-related osteonecrosis of the jaw. Int J Oral Maxillofac Surg 2015; 44:1106-9. [PMID: 26008732 DOI: 10.1016/j.ijom.2015.05.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2015] [Accepted: 05/01/2015] [Indexed: 11/16/2022]
Abstract
In recent years, proactive surgical treatment has been reported to be effective for medication-related osteonecrosis of the jaw (MRONJ). However, an uncertain resection entails the risk of recurrence, whereas an extensive surgical procedure may lead to a marked reduction in quality of life as a result of reduced masticatory function and poor cosmesis. Therefore, radiological assessment can be helpful to accurately localize MRONJ before surgery. The integrated single-photon emission computed tomography and computed tomography system (SPECT/CT) allows oral and maxillofacial surgeons to identify an area of MRONJ, especially when three-dimensional (3D) SPECT and CT fusion images are offered. A patient for whom 3D SPECT and CT image fusion (as developed in the radiology department of the study institution) contributed to determining the extent of the lesion, thereby leading to a favourable patient prognosis, is reported herein. There was exact correlation between the histological and radiological results.
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Affiliation(s)
- H Miyashita
- Division of Oral and Maxillofacial Surgery, Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Shiba
- Division of Oral and Maxillofacial Surgery, Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - H Kawana
- Division of Oral and Maxillofacial Surgery, Department of Dentistry and Oral Surgery, Keio University School of Medicine, Tokyo, Japan
| | - T Nakahara
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan.
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Nakayama K, Miyashita H, Iwamoto S. Seasonal effects of the UCP3 and the RPTOR gene polymorphisms on obesity traits in Japanese adults. J Physiol Anthropol 2014; 33:38. [PMID: 25533680 PMCID: PMC4347541 DOI: 10.1186/1880-6805-33-38] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 12/02/2014] [Indexed: 11/10/2022] Open
Abstract
Background Non-shivering thermogenesis (NST) involves a substantial amount of energy expenditure in humans and, thus, contributes to reducing the risk for obesity. Molecular evolutionary studies have reported that SNPs in/near the uncoupling protein 3 gene (UCP3) and the regulatory associated protein of mTOR complex 1 gene (RPTOR) might influence NST and confer adaptive advantages for modern human dispersal into cold environments. In the present study, the impact of these SNPs on obesity-related traits was investigated. Methods Study subjects consisted of 2,834 Japanese adults (percentage of female: 46%, mean age: 51.5). Associations of the UCP3-55C/T and the RPTOR-26934C/T - the 2 potential genetic variations involved in cold adaptation and thermogenic mechanisms in mammals, with quantitative obesity-related traits including body mass index (BMI), waist circumference, visceral fat area (VFA), VFA adjusted for BMI, and selected blood parameters - were tested using multiple linear regression models. Sliding windowsampling analysis was applied to depict seasonal effects of the SNPs on the obesity-related phenotypes. Results UCP3-55C/T and the RPTOR-26934C/T did not show any association with obesity traits and blood chemical parameters in multiple linear regression models consisting of the whole subjects. Moreover, sliding window sampling-based association analyses involving seasonality also failed to find associations between these two SNPs and obesity-related traits. Conclusions UCP3-55C/T and the RPTOR-26934C/T may only have subtle effects on the development of obesity-related traits in the present humans. These two SNPs might be irrelevant to inter-individual variations in energy metabolism and efficiency of NST.
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Affiliation(s)
- Kazuhiro Nakayama
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi 329-0498, Japan.
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Nakayama K, Watanabe K, Boonvisut S, Makishima S, Miyashita H, Iwamoto S. Common variants of GIP are associated with visceral fat accumulation in Japanese adults. Am J Physiol Gastrointest Liver Physiol 2014; 307:G1108-14. [PMID: 25324507 DOI: 10.1152/ajpgi.00282.2014] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Animal studies have demonstrated that glucose-dependent insulinotropic polypeptide (GIP) and GIP receptor (GIPR) contribute to the etiology of obesity. In humans, genomewide association studies have identified single nucleotide polymorphisms (SNPs) in the GIPR gene that are strongly associated with body mass index (BMI); however, it is not clear whether genetic variations in the GIP gene are involved in the development of obesity. In the current study, we assessed the impact of GIP SNPs on obesity-related traits in Japanese adults. Six tag SNPs were tested for associations with obesity-related traits in 3,013 individuals. Multiple linear regression analyses showed that rs9904288, located at the 3'-end of GIP, was significantly associated with visceral fat area (VFA). Moreover, rs1390154 and rs4794008 showed significant associations with plasma triglyceride levels and hemoglobin A1c levels, respectively. Among the significant SNPs, rs9904288 and rs1390154 were independently linked with SNPs in active enhancers of the duodenum mucosa, the main GIP-secreting tissue. The haplotypes of these two SNPs exhibited stronger associations with VFA. Numbers of VFA-increasing alleles of rs9904288 and BMI-increasing alleles of previously identified GIPR SNPs showed a strong additive effect on VFA, waist circumference, and BMI in the subject population. These novel results support the notion that the GIP-GIPR axis plays a role in the etiology of central obesity in humans, which is characterized by the accumulation of visceral fat.
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Affiliation(s)
- Kazuhiro Nakayama
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan; and
| | - Kazuhisa Watanabe
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan; and
| | - Supichaya Boonvisut
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan; and
| | - Saho Makishima
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan; and
| | | | - Sadahiko Iwamoto
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Tochigi, Japan; and
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Tomiyama H, Odaira M, Kimura K, Matsumoto C, Shiina K, Eguchi K, Miyashita H, Shimada K, Yamashina A. Differences in effects of age and blood pressure on augmentation index. Am J Hypertens 2014; 27:1479-85. [PMID: 24820940 DOI: 10.1093/ajh/hpu082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The effect of age on the augmentation index (AI) differs between young adults and the elderly, and the AI reaches a plateau after the age of 60 years. We examined whether the effects of age and an elevation in blood pressure on the AI differ between young adults and the elderly, between subjects with and without high blood pressure, or between subjects with and without a high AI. METHODS The radial AI was measured in 10,190 subjects who were either healthy or had hypertension (n = 5,477 men and 4,743 women). RESULTS In both sexes, a phased increase in the radial AI with age could only be confirmed up to an age of 60 years. A phased increase in the radial AI with the systolic blood pressure (SBP) could be confirmed up to an SBP of >170 mm Hg. Among subjects categorized within the highest age tertile, the highest SBP tertile, or the highest radial AI tertile, stepwise multivariable analyses demonstrated that SBP, but not age, was a significant independent factor influencing the radial AI. CONCLUSIONS The effect of age and blood pressure on AI differ not only between young adults and the elderly but also between those with and those without high blood pressure or between those with and those without a high AI. The effect of an elevation in blood pressure, but not aging, on the AI is significant in the elderly, in subjects with high blood pressure, or in those with a high AI.
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Affiliation(s)
- Hirofumi Tomiyama
- Second Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan;
| | - Mari Odaira
- Second Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan
| | - Kazutaka Kimura
- Second Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan
| | - Chisa Matsumoto
- Second Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan
| | - Kazuki Shiina
- Second Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan
| | | | | | | | - Akira Yamashina
- Second Department of Internal Medicine, Tokyo Medical University, Tokyo, Japan
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Ishizuka Y, Nakayama K, Ogawa A, Makishima S, Boonvisut S, Hirao A, Iwasaki Y, Yada T, Yanagisawa Y, Miyashita H, Takahashi M, Iwamoto S. TRIB1 downregulates hepatic lipogenesis and glycogenesis via multiple molecular interactions. J Mol Endocrinol 2014; 52:145-58. [PMID: 24389359 DOI: 10.1530/jme-13-0243] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Mammalian tribbles homolog 1 (TRIB1) regulates hepatic lipogenesis and is genetically associated with plasma triglyceride (TG) levels and cholesterol, but the molecular mechanisms remain obscure. We explored these mechanisms in mouse livers transfected with a TRIB1 overexpression, a shRNA template or a control (LacZ) adenovirus vector. The overexpression of TRIB1 reduced, whereas induction of the shRNA template increased, plasma glucose, TG, and cholesterol and simultaneously hepatic TG and glycogen levels. The involvement of TRIB1 in hepatic lipid accumulation was supported by the findings of a human SNP association study. A TRIB1 SNP, rs6982502, was identified in an enhancer sequence, modulated enhancer activity in reporter gene assays, and was significantly (P=9.39 × 10(-7)) associated with ultrasonographically diagnosed non-alcoholic fatty liver disease in a population of 5570 individuals. Transcriptome analyses of mouse livers revealed significant modulation of the gene sets involved in glycogenolysis and lipogenesis. Enforced TRIB1 expression abolished CCAAT/enhancer binding protein A (CEBPA), CEBPB, and MLXIPL proteins, whereas knockdown increased the protein level. Levels of TRIB1 expression simultaneously affected MKK4 (MAP2K4), MEK1 (MAP2K1), and ERK1/2 (MAPK1/3) protein levels and the phosphorylation of JNK, but not of ERK1/2. Pull-down and mammalian two-hybrid analyses revealed novel molecular interaction between TRIB1 and a hepatic lipogenic master regulator, MLXIPL. Co-expression of TRIB1 and CEBPA or MLXIPL reduced their protein levels and proteasome inhibitors attenuated the reduction. These data suggested that the modulation of TRIB1 expression affects hepatic lipogenesis and glycogenesis through multiple molecular interactions.
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Affiliation(s)
- Yuumi Ishizuka
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan Department of Anatomy Division of Integrative Physiology, Department of Physiology, Jichi Medical University, Tochigi 329-0498, Japan Health Care Food Research, Human Health Care Research, Research and Development, Kao Corporation, Sumida-ku, Tokyo 131-8501, Japan Jichi Medical University Health Care Center, Shimotsuke-shi, Tochigi 329-0498, Japan Division of Inflammation Research, Center for Molecular Medicine, Jichi Medical University, Tochigi 329-0498, Japan Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan
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Nakayama K, Miyashita H, Yanagisawa Y, Iwamoto S. Seasonal effects of UCP1 gene polymorphism on visceral fat accumulation in Japanese adults. PLoS One 2013; 8:e74720. [PMID: 24086366 PMCID: PMC3783463 DOI: 10.1371/journal.pone.0074720] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 08/02/2013] [Indexed: 12/31/2022] Open
Abstract
Uncoupling protein 1 (UCP1) and β3 adrenergic receptor (ADRB3) genes play central roles in the thermogenesis of brown adipose tissue (BAT) in adult humans. However, the importance of single-nucleotide polymorphisms (SNPs) in both genes during the development of obesity is controversial. Although active BAT in adult humans is frequently observed in the winter season, the effects of sampling season have not been taken into consideration in previous association studies. Here, we tested the associations of UCP1 -3826A/G and ADRB3 Trp64Arg with body mass index (BMI) and visceral fat area (VFA) in 3013 Japanese adults sampled during different seasons. Association between SNPs and the obesity-related traits were assessed using multiple linear regression models, including sex, age, physical activity, and genotypes. Both SNPs did not show significant associations in the models based on the entire cohort. However, in subsets comprising individuals mainly sampled from winter to spring, UCP1 showed significant associations with VFA (P = 0.0098) and VFA adjusted for BMI (P = 0.0128). Moreover, the effects of UCP1 on VFA were strongly negatively correlated with outdoor temperature (P = 0.00011), but not with night length (P = 0.039). ADRB3 did not show these associations, but an additive effect with UCP1 was observed for VFA adjusted for BMI (P = 0.0067). Subsets sampled in the hot season did not show significant associations for both SNPs. The season-specific effects of UCP1 on VFA were consistent with a previous finding that active BAT was more frequently found in winter than in summer, and supported the importance of cold stress in BAT activation and the significance of BAT in the development of obesity in adult humans.
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Affiliation(s)
- Kazuhiro Nakayama
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
- * E-mail:
| | - Hiroshi Miyashita
- Jichi Medical University Health Care Center, Shimotsuke-shi, Tochigi, Japan
| | - Yoshiko Yanagisawa
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
| | - Sadahiko Iwamoto
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, Shimotsuke-shi, Tochigi, Japan
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Katsuda SI, Miyashita H, Shimada K, Miyawaki Y, Kojima I, Shiogai Y, Hazama A. Subservient relationship of the peripheral second systolic pressure peak to the central hemodynamic parameters is preserved, irrespective of atherosclerosis progression in hypercholesterolemic rabbits. Hypertens Res 2013; 37:19-25. [PMID: 24048488 DOI: 10.1038/hr.2013.104] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 05/24/2013] [Accepted: 05/28/2013] [Indexed: 11/09/2022]
Abstract
We investigated whether the subservient relationship of peripheral to central hemodynamic parameters, such as the augmentation index (AI) and the second systolic (SBP2) and pulse pressures, were preserved with the progression of atherosclerosis in the Kurosawa and Kusanagi-hypercholesterolemic (KHC) rabbit, an animal model for hypercholesterolemia and atherosclerosis. Male KHC rabbits, aged 12 and 24 months, were anesthetized with pentobarbital sodium. Two catheter-tip transducers were introduced to the central (ascending aorta) and peripheral (distal region of the right brachial artery) arteries through the left common carotid and the right radial arteries, respectively. Pressure waves were simultaneously recorded under regular atrial pacing to investigate changes in response to the intravenous infusion of angiotensin II (Ang II) (30-40 ng kg(-1) min(-1)) and sodium nitroprusside (NTP) (20-30 μg kg(-1) min(-1)). Central systolic blood pressure (cSBP) and diastolic blood pressure (DBP), peripheral systolic blood pressure (pSBP) and DBP, and peripheral second systolic blood pressure (pSBP2) showed no significant difference between the 12- and 24-month-old groups before the administration of vasoactive drugs. There was no significant difference in central AI (cAI) between the two age groups before the drug infusion, even though atherosclerosis progressed with aging. Peripheral AI (pAI) changed in parallel with cAI in response to vasopressor and depressor actions due to the infusion of Ang II and NTP, respectively. We conclude that the subservience of pSBP2 to cSBP and pAI to cAI, in addition to the regression relationship of these parameters between peripheral and central arteries, were well preserved, irrespective of the progression of atherosclerosis.
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Affiliation(s)
- Shin-ichiro Katsuda
- Department of Cellular and Integrative Physiology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | | | | | - Yoshinori Miyawaki
- Research and Development Department, Omron Healthcare Co., Ltd., Kyoto, Japan
| | - Iwao Kojima
- Research and Development Department, Omron Healthcare Co., Ltd., Kyoto, Japan
| | - Yuri Shiogai
- Research and Development Department, Omron Healthcare Co., Ltd., Kyoto, Japan
| | - Akihiro Hazama
- Department of Cellular and Integrative Physiology, Fukushima Medical University School of Medicine, Fukushima, Japan
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Eguchi K, Murakami A, Horaguchi T, Kato M, Miyashita H, Kario K. Percutaneous transluminal angioplasty for peripheral artery disease confers cardiorenal protection. J Hum Hypertens 2013; 28:51-5. [DOI: 10.1038/jhh.2013.37] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Revised: 03/18/2013] [Accepted: 04/03/2013] [Indexed: 11/09/2022]
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Miyashita H, Katsuda SI. Basis of monitoring central blood pressure and hemodynamic parameters by peripheral arterial pulse waveform analyses. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2013:221-224. [PMID: 24109664 DOI: 10.1109/embc.2013.6609477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In hypertension clinics, central blood pressure (CBP) should be estimated, instead of directly measured, by the "signal processing" of a noninvasive peripheral pressure waveform. This paper deals with the data obtained in our three separate studies focusing on a major estimation method, i.e., radial artery late systolic shoulder pressure (rSBP2)-based CBP estimation. Study 1: Using a wave separation analysis of precise animal data of pressure wave transmission along the upper-limb arteries, we first demonstrate that pulse pressure amplification is largely attributable to local wave reflection alone. Study 2: A frequency component analysis of simultaneously recorded human central and radial artery pressure waveforms showed a predominance of lower (1st+2nd) harmonic components in determining the central augmentation peak amplitude. The features of a central pressure waveform, including its phase property, may contribute to the less-altered transmission of augmentation peak pressure to rSBP2. Study 3: Comparisons of noninvasive rSBP2 with direct or estimated central systolic blood pressure (cSBP) revealed broad agreement but also augmentation-dependent biases. Based on the features of the biases as well as the counterbalanced relationship between pulse pressure amplification and the transmission-induced alterations of augmentation peak amplitude observed in Study 2, we propose an improved cSBP estimate, SBPm, the simple arithmetic mean of rSBP2 and peripheral systolic blood pressure.
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Abstract
Central aortic blood pressure (CBP) is increasingly considered a better cardiovascular prognostic marker than conventional cuff brachial blood pressure. Because CBP cannot be directly measured noninvasively, it has to be estimated from peripheral pressure pulses. To assess estimated CBP appropriately, the accuracy and features of the estimation method should be considered. The aim of this review is to provide basic knowledge and information useful for interpreting and assessing estimated CBP from a methodological point of view. Precise peripheral pressure pulse recording has been enabled by the introduction of arterial applanation tonometry, for which the radial artery may be the optimal site. An automated tonometry device utilizing a sensor array is preferable in terms of reproducibility and objectivity. Calibration of a peripheral pressure waveform has unresolved problems for any estimation method, due to imperfect brachial sphygmomanometry. However, if central and peripheral pressure calibrations are equivalent, two major methods to estimate CBP—those based on generalized pressure transfer function or radial late systolic pressure—may be comparable in their accuracy of CBP parameter estimation.
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Affiliation(s)
- Hiroshi Miyashita
- Jichi Medical University Health Care Center, Jichi Medical University School of Medicine, Tochigi, Japan
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Hirata T, Kobayashi T, Wada A, Ueda T, Fujikawa T, Miyashita H, Ikeda T, Tsukamoto S, Nohara T. Anti-obesity compounds in green leaves of Eucommia ulmoides. Bioorg Med Chem Lett 2011; 21:1786-91. [DOI: 10.1016/j.bmcl.2011.01.060] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2010] [Revised: 01/07/2011] [Accepted: 01/18/2011] [Indexed: 11/26/2022]
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Uchiyama N, Kawamoto T, Kaieda I, Honda K, Miyashita H, Hikami K, Hikichi Y, Kuida K. 503 In vitro characterization of TAK-960, a novel, small molecule inhibitor of Polo-like kinase 1. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)72210-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Miyashita H, Aizawa A, Hashimoto J, Hirooka Y, Imai Y, Kawano Y, Kohara K, Sunagawa K, Suzuki H, Tabara Y, Takazawa K, Takenaka T, Yasuda H, Shimada K. Cross-sectional characterization of all classes of antihypertensives in terms of central blood pressure in Japanese hypertensive patients. Am J Hypertens 2010; 23:260-8. [PMID: 20044738 DOI: 10.1038/ajh.2009.255] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Central blood pressure (CBP) has been reported to be superior to brachial blood pressure (BP) as a cardiovascular risk predictor in hypertensive patients; however, the effects of antihypertensives on CBP have not been fully examined. This cross-sectional hypothesis-generating study aimed to tentatively characterize all classes of antihypertensives in relation to CBP. METHODS Calibrated tonometric radial artery pressure waveforms were recorded using an automated device in 1,727 treated hypertensive patients and 848 nonhypertensive (non-HT) participants. Radial artery late systolic BP (SBP) has been reported to reflect central SBP. The difference between late and peak SBPs (DeltaSBP2) was assessed with linear regression model-based adjustments. Separate regression models for DeltaSBP2 were constructed for both participant groups as well as specified sub-populations. RESULTS DeltaSBP2 was 3.3 mm Hg lower in patients treated with any single-vasodilating (VD) antihypertensive agent without significant interclass difference than with non-VD agents, and was 2.0 mm Hg lower than estimated in nonhypertensive subjects. Combinations of two vasodilators were 6.6 and 2.9 mm Hg lower in DeltaSBP2 than nonvasodilator combinations and nonhypertensive subjects, respectively (P < 0.001 for all comparisons). Nonvasodilators and their combination showed high DeltaSBP2, 1.1 and 3.7 mm Hg higher than in nonhypertensive subjects (P < 0.001 for both). Additional adjustment of the pulse rate reduced high DeltaSBP2 with beta-blockers (betaBLs). CONCLUSIONS This cross-sectional observation suggests that vasodilatory antihypertensives lower CBP independently of peripheral BP levels without evident class-specific differences, whereas nonvasodilators may raise CBP.
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Matsui Y, Eguchi K, O'Rourke MF, Ishikawa J, Miyashita H, Shimada K, Kario K. Differential Effects Between a Calcium Channel Blocker and a Diuretic When Used in Combination With Angiotensin II Receptor Blocker on Central Aortic Pressure in Hypertensive Patients. Hypertension 2009; 54:716-23. [PMID: 19667251 DOI: 10.1161/hypertensionaha.109.131466] [Citation(s) in RCA: 142] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Yoshio Matsui
- From the Division of Cardiovascular Medicine (Y.M., K.E., J.I., H.M., K.S., K.K.), Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan; University of New South Wales/St. Vincent’s Clinic (M.F.O.), Sydney, Australia
| | - Kazuo Eguchi
- From the Division of Cardiovascular Medicine (Y.M., K.E., J.I., H.M., K.S., K.K.), Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan; University of New South Wales/St. Vincent’s Clinic (M.F.O.), Sydney, Australia
| | - Michael F. O'Rourke
- From the Division of Cardiovascular Medicine (Y.M., K.E., J.I., H.M., K.S., K.K.), Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan; University of New South Wales/St. Vincent’s Clinic (M.F.O.), Sydney, Australia
| | - Joji Ishikawa
- From the Division of Cardiovascular Medicine (Y.M., K.E., J.I., H.M., K.S., K.K.), Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan; University of New South Wales/St. Vincent’s Clinic (M.F.O.), Sydney, Australia
| | - Hiroshi Miyashita
- From the Division of Cardiovascular Medicine (Y.M., K.E., J.I., H.M., K.S., K.K.), Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan; University of New South Wales/St. Vincent’s Clinic (M.F.O.), Sydney, Australia
| | - Kazuyuki Shimada
- From the Division of Cardiovascular Medicine (Y.M., K.E., J.I., H.M., K.S., K.K.), Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan; University of New South Wales/St. Vincent’s Clinic (M.F.O.), Sydney, Australia
| | - Kazuomi Kario
- From the Division of Cardiovascular Medicine (Y.M., K.E., J.I., H.M., K.S., K.K.), Department of Medicine, Jichi Medical University School of Medicine, Tochigi, Japan; University of New South Wales/St. Vincent’s Clinic (M.F.O.), Sydney, Australia
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Yago K, Kizu H, Miyashita H, Shiba H, Kasazaki Y, Asanami S. Bisphosphonate-related osteonecrosis of the jaw for which a surgical procedure was performed. Int J Oral Maxillofac Surg 2009. [DOI: 10.1016/j.ijom.2009.03.540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Matsui Y, Ishikawa J, Eguchi K, Hoshide S, Miyashita H, Shimada K, Kario K. The influence of wave reflection on left ventricular hypertrophy in hypertensive patients is modified by age and gender. Hypertens Res 2008; 31:649-56. [PMID: 18633176 DOI: 10.1291/hypres.31.649] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
It has been established that a positive association exists between the augmentation index (AIx) and left ventricular mass (LVM) in hypertensives, but it remains unclear whether this association is affected by age or gender. The aim of the study was to assess the effect of age and gender on the association between carotid AIx and LVM in hypertensive patients. We performed arterial tonometry and echocardiography in 512 treated hypertensive patients who were divided into 4 groups by gender and age (older or younger than 65 years). Correlations between carotid AIx and echocardiographic indices were evaluated by univariable and multivariable models. In females, carotid AIx increased with age up to 60 years, but decreased thereafter. In univariable analyses, carotid AIx was positively correlated with the LVM index in younger females (r=0.25, p=0.04) and males (r=0.48, p<0.001), but not in the older age groups. Multivariable analyses showed that this positive correlation in younger males remained significant (beta=0.39, p<0.001) after adjusting for age, body mass index, and mean arterial pressure. In contrast, in the older subjects, carotid AIx was negatively correlated with relative wall thickness in females (beta= -0.14, p=0.034) and males (beta= -0.17, p=0.037) independent of age and mean arterial pressure. A significant association between carotid AIx and LVM index was seen only in younger males. The lack of any such association in older hypertensives can be explained by both the plateau in the values of carotid AIx, and the fact that LVM increased with age.
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Affiliation(s)
- Yoshio Matsui
- Division of Cardiovascular Medicine, Jichi Medical University School of Medicine, Shimotsuke, Japan.
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Kashiyama Y, Miyashita H, Ohkubo S, Ogawa NO, Chikaraishi Y, Takano Y, Suga H, Toyofuku T, Nomaki H, Kitazato H, Nagata T, Ohkouchi N. Evidence of global chlorophyll d. Science 2008; 321:658. [PMID: 18669855 DOI: 10.1126/science.1158761] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Although analyses of chlorophyll d (Chl d)-dominated oxygenic photosystems have been conducted since their discovery 12 years ago, Chl d distribution in the environment and quantitative importance for aquatic photosynthesis remain to be investigated. We analyzed the pigment compositions of surface sediments and detected Chl d and its derivatives from diverse aquatic environments. Our data show that the viable habitat for Chl d-producing phototrophs extends across salinities of 0 to 50 practical salinity units and temperatures of 1 degrees to 40 degrees C, suggesting that Chl d production can be ubiquitously observed in aquatic environments that receive near-infrared light. The relative abundances of Chl d derivatives over that of Chl a derivatives in the studied samples are up to 4%, further suggesting that Chl d-based photosynthesis plays a quantitatively important role in the aquatic photosynthesis.
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Affiliation(s)
- Y Kashiyama
- Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology, Yokosuka 237-0061, Japan.
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Ito T, Okada T, Miyashita H, Nomoto T, Nonaka-Sarukawa M, Uchibori R, Maeda Y, Urabe M, Mizukami H, Kume A, Takahashi M, Ikeda U, Shimada K, Ozawa K. Interleukin-10 expression mediated by an adeno-associated virus vector prevents monocrotaline-induced pulmonary arterial hypertension in rats. Circ Res 2007; 101:734-41. [PMID: 17673672 DOI: 10.1161/circresaha.107.153023] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Pulmonary arterial hypertension (PAH) is a fatal disease associated with inflammation and pathological remodeling of the pulmonary artery (PA). Interleukin (IL)-10 is a pleiotropic antiinflammatory cytokine with vasculoprotective properties. Here, we report the preventive effects of IL-10 on monocrotaline-induced PAH. Three-week-old Wistar rats were intramuscularly injected with an adeno-associated virus serotype 1 vector expressing IL-10, followed by monocrotaline injection at 7 weeks old. IL-10 transduction significantly improved survival rates of the PAH rats 8 weeks after monocrotaline administration compared with control gene transduction (75% versus 0%, P<0.01). IL-10 also significantly reduced mean PA pressure (22.8+/-1.5 versus 29.7+/-2.8 mm Hg, P<0.05), a weight ratio of right ventricle to left ventricle plus septum (0.35+/-0.04 versus 0.42+/-0.05, P<0.05), and percent medial thickness of the PA (12.9+/-0.3% versus 21.4+/-0.4%, P<0.01) compared with controls. IL-10 significantly reduced macrophage infiltration and vascular cell proliferation in the remodeled PA in vivo. It also significantly decreased the lung levels of transforming growth factor-beta1 and IL-6, which are indicative of PA remodeling. In addition, IL-10 increased the lung level of heme oxygenase-1, which strongly prevents PA remodeling. In vitro analysis revealed that IL-10 significantly inhibited excessive proliferation of cultured human PA smooth muscle cells treated with transforming growth factor-beta1 or the heme oxygenase inhibitor tin protoporphyrin IX. Thus, IL-10 prevented the development of monocrotaline-induced PAH, and these results provide new insights into the molecular mechanisms of human PAH.
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Affiliation(s)
- Takayuki Ito
- Division of Genetic Therapeutics, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi 329-0498, Japan.
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Ito T, Okada T, Mimuro J, Miyashita H, Uchibori R, Urabe M, Mizukami H, Kume A, Takahashi M, Ikeda U, Sakata Y, Shimada K, Ozawa K. Adenoassociated virus-mediated prostacyclin synthase expression prevents pulmonary arterial hypertension in rats. Hypertension 2007; 50:531-6. [PMID: 17635855 DOI: 10.1161/hypertensionaha.107.091348] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Prostacyclin synthase (PGIS) is the final committed enzyme in the metabolic pathway of prostacyclin production. The therapeutic option of intravenous prostacyclin infusion in patients with pulmonary arterial hypertension is limited by the short half-life of the drug and life-threatening catheter-related complications. To develop a better delivery system for prostacyclin, we examined the feasibility of intramuscular injection of an adenoassociated virus (AAV) vector expressing PGIS for preventing monocrotaline-induced pulmonary arterial hypertension in rats. We developed an AAV serotype 1-based vector carrying a human PGIS gene (AAV-PGIS). AAV-PGIS or the control AAV vector expressing enhanced green fluorescent protein was injected into the anterior tibial muscles of 3-week-old male Wistar rats; this was followed by the monocrotaline administration at 7 weeks. Eight weeks after injecting the vector, the plasma levels of 6-keto-prostaglandin F(1alpha) increased in a vector dose-dependent manner. At this time point, the PGIS transduction (1x10(10) genome copies per body) significantly decreased mean pulmonary arterial pressure (33.9+/-2.4 versus 46.1+/-3.0 mm Hg; P<0.05), pulmonary vascular resistance (0.26+/-0.03 versus 0.41+/-0.03 mm Hg x mL(-1) x min(-1) x kg(-1); P<0.05), and medial thickness of the peripheral pulmonary artery (14.6+/-1.5% versus 23.5+/-0.5%; P<0.01) as compared with the controls. Furthermore, the PGIS-transduced rats demonstrated significantly improved survival rates as compared with the controls (100% versus 50%; P<0.05) at 8 weeks postmonocrotaline administration. An intramuscular injection of AAV-PGIS prevents monocrotaline-pulmonary arterial hypertension in rats and provides a new therapeutic alternative for preventing pulmonary arterial hypertension in humans.
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Affiliation(s)
- Takayuki Ito
- Division of Genetic Therapeutics, Jichi Medical University, Tochigi, Japan.
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Abstract
BACKGROUND There is a range of treatment options for the management of the pulp in extensively decayed teeth. These include direct and indirect pulp capping, pulpotomy or pulpectomy. If the tooth is symptomatic or if there are periapical bone changes, then endodontic treatment is required. However, if the tooth is asymptomatic but the caries is extensive, there is no consensus as to the best method of management. In addition, there has been a recent move towards using alternative materials and methods such as the direct or indirect placement of bonding agents and mineral trioxide aggregate. Most studies have investigated the management of asymptomatic carious teeth with or without an exposed dental pulp using various capping materials (e.g. calcium hydroxide, Ledermix, Triodent, Biorex, etc.). However, there is no long term data regarding the outcome of management of asymptomatic, carious teeth according to different regimens. OBJECTIVES This study aims to assess the effectiveness of techniques used to treat asymptomatic carious teeth and maintain pulp vitality. SEARCH STRATEGY Electronic searches of the following databases were undertaken: The Cochrane Oral Health Group's Trials Register (March 2006), the Cochrane Central Register of Controlled Trials (CENTRAL) (The Cochrane Library 2006, Issue 1), MEDLINE (1966 to week 4, February 2006), EMBASE (1974 to 13 March 2006), National Research Register (March 2006), Science Citation Index - SCISEARCH (1981 to March 2006). Detailed search strategies were developed for each database. Handsearching and screening of reference lists were undertaken. There was no restriction with regard to language of publication. SELECTION CRITERIA Studies included were randomised controlled trials (RCTs). Asymptomatic vital permanent teeth with extensive caries were included. Studies were those which compared techniques to maintain pulp vitality. Outcome measures included clinical success and adverse events. DATA COLLECTION AND ANALYSIS Data were independently extracted by three review authors. Authors were contacted for details of randomisation and withdrawals and a quality assessment was carried out. The Cochrane Oral Health Group's statistical guidelines were followed. MAIN RESULTS Only four RCTs were identified. Interventions examined included: Ledermix, glycerrhetinic acid/antibiotic mix, zinc oxide eugenol, calcium hydroxide, Cavitec, Life, Dycal, potassium nitrate, dimethyl isosorbide, and polycarboxylate cement. Only one study showed a statistically significant finding; potassium nitrate/dimethyl isosorbide/polycarboxylate cement resulted in fewer clinical symptoms than potassium nitrate/polycarboxylate cement or polycarboxylate cement alone when used as a capping material for carious pulps. AUTHORS' CONCLUSIONS It was disappointing that there were so few studies which could be considered as being suitable for inclusion in this review. The findings from this review do not suggest that there should be any significant change from accepted conventional practice procedures when the pulp of the carious tooth is considered. Further well designed RCTs are needed to investigate the potential of contemporary materials which may be suitable when used in the management of carious teeth. It is recognised that it is difficult to establish the 'ideal' clinical study when ethical approval for new materials must be sought and strict attention to case selection, study protocol and interpretation of data is considered. It is also not easy to recruit sufficient numbers of patients meeting the necessary criteria.
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Katsuda SI, Miyashita H, Takazawa K, Machida N, Kusanagi M, Miyake M, Hazama A. Mild hypertension in young Kurosawa and Kusanagi-hypercholesterolaemic (KHC) rabbits. Physiol Meas 2006; 27:1361-71. [PMID: 17135705 DOI: 10.1088/0967-3334/27/12/008] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The coexistence of hypertension and hypercholesterolaemia from youth may increase the prevalence of and mortality from cardiovascular disease and stroke. We thus investigated haemodynamics of mild hypertension in young Kurosawa and Kusanagi-hypercholesterolaemic (KHC) rabbits aged 10-12 months old, as models of heritable hypercholesterolaemia. Pressure and flow waves were simultaneously recorded at the ascending aorta with a catheter-tip micromanometer and ultrasonic flow meter under pentobarbital anaesthesia, respectively. Systolic (119.3 +/- 6.5 and 138.4 +/- 7.4 mmHg (mean +/- SD) for control and KHC rabbit groups; p < 0.001), diastolic (95.7 +/- 6.1 and 109.8 +/- 5.2; p < 0.001), mean (105.8 +/- 6.5 and 122.5 +/- 4.9; p < 0.001) and pulse (23.7 +/- 2.5 and 28.6 +/- 4.0; p < 0.001) pressures as well as total peripheral vascular resistance (0.32 +/- 0.02 and 0.37 +/- 0.03 mmHg/ml/min; p < 0.001) were significantly greater in the KHC rabbit group than those in the age-matched control rabbit group, respectively, while there were no significant differences in the mean aortic flow, heart rate or stroke volume between the two rabbit groups. Aortic input impedance (p < 0.05) and reflection coefficient (p < 0.05) were significantly greater at lower frequency in the KHC rabbit group than in the control rabbit group, whereas there was no significant difference in the characteristic impedance between the two rabbit groups. Plasma angiotensin I (p < 0.01) and II (p < 0.01) levels and serum angiotensin converting enzyme activity (p < 0.05) were significantly greater in the KHC rabbit group than in the age-matched control rabbit group. Atheromatous plaque was in the early stage and composed mainly of abundant foam cells. Neither sclerotic lesions nor stenosis were observed in main peripheral arteries. The mild hypertension in young KHC rabbits was due partly to the increased activity of the renin-angiotensin system. These findings may be thought provoking in elucidating the mechanism and developing preventive and therapeutic strategies in young patients with coexistent hypertension and hypercholesterolaemia.
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Affiliation(s)
- Shin-ichiro Katsuda
- Department of Physiology, Fukushima Medical University School of Medicine, 1, Hikari-ga-oka, Fukushima 960-1295, Japan
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Suzuki C, Takahashi M, Morimoto H, Izawa A, Ise H, Hongo M, Hoshikawa Y, Ito T, Miyashita H, Kobayashi E, Shimada K, Ikeda U. Mycophenolate mofetil attenuates pulmonary arterial hypertension in rats. Biochem Biophys Res Commun 2006; 349:781-8. [PMID: 16956581 DOI: 10.1016/j.bbrc.2006.08.109] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2006] [Accepted: 08/17/2006] [Indexed: 10/24/2022]
Abstract
Pulmonary arterial hypertension (PAH) is characterized by abnormal proliferation of smooth muscle cells (SMCs), leading to occlusion of pulmonary arterioles, right ventricular (RV) hypertrophy, and death. We investigated whether mycophenolate mofetil (MMF), a potent immunosuppresssant, prevents the development of monocrotaline (MCT)-induced PAH in rats. MMF effectively decreased RV systolic pressure and RV hypertrophy, and reduced the medial thickness of pulmonary arteries. MMF significantly inhibited the number of proliferating cell nuclear antigen (PCNA)-positive cells, infiltration of macrophages, and expression of P-selectin and interleukin-6 on the endothelium of pulmonary arteries. The infiltration of T cells and mast cells was not affected by MMF. In vitro experiments revealed that mycophenolic acid (MPA), an active metabolite of MMF, dose-dependently inhibited proliferation of human pulmonary arterial SMCs. MMF attenuated the development of PAH through its anti-inflammatory and anti-proliferative properties. These findings provide new insight into the potential role of immunosuppressants in the treatment of PAH.
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Affiliation(s)
- Chihiro Suzuki
- Division of Cardiovascular Sciences, Department of Organ Regeneration, Shinshu University Graduate School of Medicine, Matsumoto, Japan
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Shimmura S, Miyashita H, Uchino Y, Taguchi T, Kobayashi H, Shimazaki J, Tanaka J, Tsubota K. Microkeratome assisted deep lamellar keratoprosthesis. Br J Ophthalmol 2006; 90:826-9. [PMID: 16597665 PMCID: PMC1857140 DOI: 10.1136/bjo.2006.090324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AIMS To establish a keratoprosthesis (Kpro) surgical technique that maintains an intact superficial corneal layer. METHODS A manual microkeratome (Moria LSK-1) was used to create a 130 mum flap of approximately 10 mm diameter in the right eye of Japanese white rabbits. The stoma beneath the flap area was dissected before the removal of a 5.0 mm stromal disc. A 5.0 mm collagen I immobilised poly(vinyl alcohol) (COL-PVA) disc was placed on the exposed posterior stroma close to Descemet's membrane. The flap was repositioned and fixed using 10-0 nylon sutures, which were removed 2 days following surgery. The corneas were followed clinically by slit lamp microscopy and photographs. Rabbits were sacrificed after 6 months, and the transplanted corneas were examined histologically by haematoxylin and eosin staining and immunohistochemistry against vimentin and alpha-smooth muscle actin (alpha-SMA). RESULTS The transplanted COL-PVA discs remained transparent throughout the study, with no complications related to the flap or overlying epithelium. The interface between COL-PVA and Descemet's membrane remained clear without signs of opacification caused by scarring or cellular deposition. Pathology revealed the intact COL-PVA polymer in the posterior stroma, with minimal cellular infiltration along the anterior and posterior interfaces. Immunohistology shows vimentin and alpha-SMA staining at levels comparable to lamellar keratoplasty control. CONCLUSIONS Microkeratome assisted deep lamellar keratoprosthesis may be a safe technique for the transplantation of artificial hydrogels for therapeutic purposes.
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Affiliation(s)
- S Shimmura
- Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan.
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Miyashita H. Reference Values of Arterial Stiffness−Related Indexes Derived from Pulse Wave Analysis. Hypertens Res 2006; 29:467-8. [PMID: 17044656 DOI: 10.1291/hypres.29.467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Nakae K, Saito K, Iino T, Yamamoto N, Wakabayashi M, Yoshikawa S, Matsushima S, Miyashita H, Sugimoto H, Kiba A, Gupta J. A prostacyclin receptor antagonist inhibits the sensitized release of substance P from rat sensory neurons. J Pharmacol Exp Ther 2005; 315:1136-42. [PMID: 16109742 DOI: 10.1124/jpet.105.091967] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Prostacyclin, one of the cyclooxygenase metabolites, causes various biological effects, including vasodilation and antithrombogenicity, and is also involved in several pathophysiological effects, such as inflammatory pain and bladder disorders. The prostacyclin receptor (IP receptor) agonists iloprost, cicaprost, and carbacyclin have been useful for clarifying the role of the IP receptor signaling, since the endogenous ligand, prostacyclin, is very unstable. On the other hand, only a few IP receptor antagonists have been reported to date. Here, we characterized the biological activities of 2-[4-(1H-indol-4-yloxymethyl)-benzyloxycarbonylamino]-3-phenyl-propionic acid (compound A) in various in vitro systems. Compound A inhibited the accumulation of the second messenger cyclic AMP in the UMR-108 rat osteosarcoma cell line and primary cultured rat dorsal root ganglion (DRG) neurons in a concentration-dependent manner up to 10 microM, without affecting other eicosanoid receptors. Functionally, the IP receptor plays an important role in DRG neuron sensitization, which is measured by release of the neurotransmitter substance P. Although the effects of iloprost or Lys-bradykinin, an inflammatory peptide, alone on substance P release were limited, stimulation of the neurons with both these ligands induced substantial amounts of substance P release. This synergistic effect was suppressed by compound A. Collectively, these results suggest that compound A is a highly selective IP receptor antagonist that inhibits iloprost-induced sensitization of sensory neurons. Furthermore, these findings suggest that IP receptor antagonist administration may be effective for abnormal neural activities of unmyelinated sensory afferents. Compound A should prove useful for further investigations of the IP receptor in various biological processes.
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MESH Headings
- Animals
- Antineoplastic Agents/chemistry
- Antineoplastic Agents/pharmacology
- CHO Cells
- Calcium/analysis
- Calcium/metabolism
- Cell Line, Tumor
- Cells, Cultured
- Cricetinae
- Cyclic AMP/analysis
- Dose-Response Relationship, Drug
- Drug Interactions
- Ganglia, Spinal/cytology
- Ganglia, Spinal/drug effects
- Ganglia, Spinal/enzymology
- Ganglia, Spinal/metabolism
- Humans
- Iloprost/pharmacology
- Inhibitory Concentration 50
- K562 Cells
- Kallidin/pharmacology
- Leukemia, Erythroblastic, Acute/pathology
- Molecular Structure
- Neurons, Afferent/drug effects
- Neurons, Afferent/enzymology
- Neurons, Afferent/metabolism
- Osteosarcoma/pathology
- Rats
- Receptors, Epoprostenol/antagonists & inhibitors
- Receptors, Epoprostenol/genetics
- Receptors, Epoprostenol/metabolism
- Substance P/antagonists & inhibitors
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Affiliation(s)
- Koichi Nakae
- Urology, Research Center Kyoto, Bayer Yakuhin Ltd., Kyoto, Japan.
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Miyashita H, Shimada K. [Reduced arterial compliance with advancing age]. Nihon Rinsho 2005; 63:959-68. [PMID: 15948376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The term "compliance" is generally used as softness of the arterial wall. Fundamentally, compliance characterizes property of a chamber, being defined as deltaV/deltaP. It implies that how easily volume (V) of the chamber changes in response to unit pressure (P) change. However, in reality, the arterial system is not such a simple chamber but a complicated branched tubing system, in which compliance components are distributed along the tubing. It can be simplified as a single tube model, in which we can regard compliance as the sum of proximal portion as a determinant of characteristic impedance of the aorta and distal portion consisting of terminal impedance of the peripheral arterial bed. Such distributed model enables us to simulate pulse wave propagation and reflection, actually occurred in real arteries. This paper deals with parameters relating to arterial compliance corresponding to such distributed model. Arterial compliance is reduced with advancing age. This phenomenon has been widely recognized by epidemiological studies on blood pressure, in which systolic and pulse pressures are increased with aortic reflection without significant change in diastolic pressure. Also, many investigators reported age-dependent compliance declines by assessing compliance-relating parameters including cross-sectional compliance, pulse wave velocity and augmentation index. This reduced compliance may affect the heart as a pulsatile afterload and adversely alter myocardial energy balance.
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