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Effects of empagliflozin on progression of chronic kidney disease: a prespecified secondary analysis from the empa-kidney trial. Lancet Diabetes Endocrinol 2024; 12:39-50. [PMID: 38061371 PMCID: PMC7615591 DOI: 10.1016/s2213-8587(23)00321-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND Sodium-glucose co-transporter-2 (SGLT2) inhibitors reduce progression of chronic kidney disease and the risk of cardiovascular morbidity and mortality in a wide range of patients. However, their effects on kidney disease progression in some patients with chronic kidney disease are unclear because few clinical kidney outcomes occurred among such patients in the completed trials. In particular, some guidelines stratify their level of recommendation about who should be treated with SGLT2 inhibitors based on diabetes status and albuminuria. We aimed to assess the effects of empagliflozin on progression of chronic kidney disease both overall and among specific types of participants in the EMPA-KIDNEY trial. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA), and included individuals aged 18 years or older with an estimated glomerular filtration rate (eGFR) of 20 to less than 45 mL/min per 1·73 m2, or with an eGFR of 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher. We explored the effects of 10 mg oral empagliflozin once daily versus placebo on the annualised rate of change in estimated glomerular filtration rate (eGFR slope), a tertiary outcome. We studied the acute slope (from randomisation to 2 months) and chronic slope (from 2 months onwards) separately, using shared parameter models to estimate the latter. Analyses were done in all randomly assigned participants by intention to treat. EMPA-KIDNEY is registered at ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and then followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroups of eGFR included 2282 (34·5%) participants with an eGFR of less than 30 mL/min per 1·73 m2, 2928 (44·3%) with an eGFR of 30 to less than 45 mL/min per 1·73 m2, and 1399 (21·2%) with an eGFR 45 mL/min per 1·73 m2 or higher. Prespecified subgroups of uACR included 1328 (20·1%) with a uACR of less than 30 mg/g, 1864 (28·2%) with a uACR of 30 to 300 mg/g, and 3417 (51·7%) with a uACR of more than 300 mg/g. Overall, allocation to empagliflozin caused an acute 2·12 mL/min per 1·73 m2 (95% CI 1·83-2·41) reduction in eGFR, equivalent to a 6% (5-6) dip in the first 2 months. After this, it halved the chronic slope from -2·75 to -1·37 mL/min per 1·73 m2 per year (relative difference 50%, 95% CI 42-58). The absolute and relative benefits of empagliflozin on the magnitude of the chronic slope varied significantly depending on diabetes status and baseline levels of eGFR and uACR. In particular, the absolute difference in chronic slopes was lower in patients with lower baseline uACR, but because this group progressed more slowly than those with higher uACR, this translated to a larger relative difference in chronic slopes in this group (86% [36-136] reduction in the chronic slope among those with baseline uACR <30 mg/g compared with a 29% [19-38] reduction for those with baseline uACR ≥2000 mg/g; ptrend<0·0001). INTERPRETATION Empagliflozin slowed the rate of progression of chronic kidney disease among all types of participant in the EMPA-KIDNEY trial, including those with little albuminuria. Albuminuria alone should not be used to determine whether to treat with an SGLT2 inhibitor. FUNDING Boehringer Ingelheim and Eli Lilly.
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T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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KATO R, Suzuki Y, Suzuki H, Aoki R, Koizumi A, Lee M, Homma N, Fukao Y, Nakayama M, Nihei Y, Muto M, Kano T, Makita Y, Miyazaki T, Arai S. WCN23-0498 The pathogenesis of glomerular inflammatory mechanism through Apoptosis Inhibitor of Macrophage. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.152] [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: 03/22/2023] Open
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LEE M, Suzuki H, Kato R, Fukao Y, Nakayama M, Kano T, Makita Y, Suzuki Y. WCN23-0093 TLR9/TLR7 ARE STRONG CANDIDATES FOR DISEASE-SPECIFIC THERAPEUTIC TARGETS IN IgA NEPHROPATHY. Kidney Int Rep 2023. [DOI: 10.1016/j.ekir.2023.02.464] [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: 03/22/2023] Open
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Makita Y, Hitoshi S, Daisuke N, Toshiki K, Akira N, Yusuke S. SAT-368 Galactose-deficient IgA1 containing immune complexes deposit in mesangium via endothelial cell injuries. Kidney Int Rep 2020. [DOI: 10.1016/j.ekir.2020.02.390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Amagai Y, Makita Y, Takai M, Muko R, Matsuda H, Tanaka A. Reduction in the colonization of Staphylococcus aureus on the skin surface under calcium-/magnesium-depleted conditions. Lett Appl Microbiol 2018; 67:343-347. [PMID: 30015352 DOI: 10.1111/lam.13037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 03/01/2018] [Revised: 06/18/2018] [Accepted: 06/19/2018] [Indexed: 11/27/2022]
Abstract
Excessive expansion of Staphylococcus aureus is associated with several skin diseases, including atopic dermatitis (AD). Recently, we have demonstrated that washing skins with ultra-pure soft water containing little bivalent metal ions improved skin conditions of atopic subjects. In this study, we investigated the roles of calcium or magnesium on the proliferation of S. aureus both in vitro and in vivo. Depletion of calcium and magnesium in the culture medium significantly suppressed the expansion of S. aureus growth. When S. aureus, diluted with water containing calcium/magnesium at the concentration of medium-hard water (83·0 mg l-1 as CaCO3 ) or the one that contains little calcium/magnesium, was applied onto the tape-stripped skin of Hos:HR-1 mice, growth of S. aureus in water without those minerals on the skin was suppressed. These results suggest that depletion of both calcium and magnesium abrogate the proliferation of S. aureus not only in the culture system but also on the skin surface of mice. Since colonization of S. aureus on the skin is well-known to exacerbate AD symptoms, usage of ultra-pure soft water containing less calcium and magnesium may improve the skin condition through the suppression of S. aureus growth on the skin of patients with skin problems. SIGNIFICANCE AND IMPACT OF THE STUDY This study demonstrates the importance of calcium and magnesium for the colonization and growth of Staphylococcus aureus by using both in vitro culture systems and in vivo experiments on the murine skin. Our results indicate that the removal of these metal ions is probably beneficial for protecting the skin from S. aureus. Thus, using ultra-pure soft water without metal ions may improve the skin condition of patients with skin problems through the protection from S. aureus colonization.
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Affiliation(s)
- Y Amagai
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Research Fellow of the Japan Society for the Promotion of Science, Tokyo, Japan
| | - Y Makita
- R&D Center, MIURA CO., LTD., Ehime, Japan
| | - M Takai
- R&D Center, MIURA CO., LTD., Ehime, Japan
| | - R Muko
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - H Matsuda
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Laboratory of Veterinary Molecular Pathology and Therapeutics, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - A Tanaka
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Jang H, Makita Y, Jung K, Ishizaka S, Karasawa K, Oida K, Takai M, Matsuda H, Tanaka A. Linoleic acid salt with ultrapure soft water as an antibacterial combination against dermato-pathogenic Staphylococcus spp. J Appl Microbiol 2016; 120:280-8. [PMID: 26606689 DOI: 10.1111/jam.13012] [Citation(s) in RCA: 4] [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: 07/03/2015] [Revised: 10/29/2015] [Accepted: 11/17/2015] [Indexed: 11/27/2022]
Abstract
AIMS Skin colonization of Staphylococcus spp. critically affects the severity of dermatitis in humans and animals. We examined different types of fatty acid salts for their antibacterial activity against Staphylococcus spp. when used in ultrapure soft water (UPSW). We also evaluated their therapeutic effect on a spontaneous canine model of dermatitis. METHODS AND RESULTS UPSW, in which Ca(++) and Mg(++) were replaced with Na(+) , was generated using a water softener with cation-exchange resin. Staphylococcus aureus (Staph. aureus), Staphylococcus intermedius (Staph. intermedius), and Staphylococcus pseudintermedius (Staph. pseudintermedius) were incubated with various fatty acid salts in distilled water (DW) or UPSW and the number of bacteria was counted. Among the fatty acids, oleic acid salt and linoleic acid (LA) salt reduced the number of these bacteria. Also, UPSW enhanced the antibacterial effect of LA on Staph. spp. In spontaneously developed itchy dermatitis in companion dogs, shampoo treatment with liquid soap containing 10% LA in UPSW improved skin conditions. CONCLUSIONS LA salt showed antibacterial activity against Staph. spp. Treatment with soap containing LA with UPSW reduced clinical conditions in dogs with dermatitis. SIGNIFICANCE AND IMPACT OF THE STUDY Because colonization of Staph. spp. on the skin exacerbates dermatitis, the use of LA-containing soap in UPSW may reduce unpleasant clinical symptoms of the skin.
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Affiliation(s)
- H Jang
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Y Makita
- R&D Center, MIURA Co. Ltd., Ehime, Japan
| | - K Jung
- Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - S Ishizaka
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - K Karasawa
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - K Oida
- Laboratories of Veterinary Molecular Pathology and Therapeutics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - M Takai
- R&D Center, MIURA Co. Ltd., Ehime, Japan
| | - H Matsuda
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Laboratories of Veterinary Molecular Pathology and Therapeutics, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - A Tanaka
- Cooperative Major in Advanced Health Science, Graduate School of Bio-Applications and System Engineering, Tokyo University of Agriculture and Technology, Tokyo, Japan.,Laboratory of Comparative Animal Medicine, Division of Animal Life Science, Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan
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Antoniadis AP, Papafaklis MI, Takahashi S, Tsuda M, Makita Y, Honye J, Nakamura S, Saito S, Feldman CL, Stone PH. Longitudinal heterogeneity of arterial remodeling and endothelial shear stress in human coronary artery plaques and their effects on the natural history of atherosclerosis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.4366] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Tsurusaki Y, Okamoto N, Ohashi H, Mizuno S, Matsumoto N, Makita Y, Fukuda M, Isidor B, Perrier J, Aggarwal S, Dalal AB, Al-Kindy A, Liebelt J, Mowat D, Nakashima M, Saitsu H, Miyake N, Matsumoto N. Coffin-Siris syndrome is a SWI/SNF complex disorder. Clin Genet 2013; 85:548-54. [PMID: 23815551 DOI: 10.1111/cge.12225] [Citation(s) in RCA: 103] [Impact Index Per Article: 9.4] [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: 05/09/2013] [Revised: 06/28/2013] [Indexed: 12/12/2022]
Abstract
Coffin-Siris syndrome (CSS) is a congenital disorder characterized by intellectual disability, growth deficiency, microcephaly, coarse facial features, and hypoplastic or absent fifth fingernails and/or toenails. We previously reported that five genes are mutated in CSS, all of which encode subunits of the switch/sucrose non-fermenting (SWI/SNF) ATP-dependent chromatin-remodeling complex: SMARCB1, SMARCA4, SMARCE1, ARID1A, and ARID1B. In this study, we examined 49 newly recruited CSS-suspected patients, and re-examined three patients who did not show any mutations (using high-resolution melting analysis) in the previous study, by whole-exome sequencing or targeted resequencing. We found that SMARCB1, SMARCA4, or ARID1B were mutated in 20 patients. By examining available parental samples, we ascertained that 17 occurred de novo. All mutations in SMARCB1 and SMARCA4 were non-truncating (missense or in-frame deletion) whereas those in ARID1B were all truncating (nonsense or frameshift deletion/insertion) in this study as in our previous study. Our data further support that CSS is a SWI/SNF complex disorder.
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Affiliation(s)
- Y Tsurusaki
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Sairaku A, Nakano Y, Oda N, Makita Y, Kajihara K, Tokuyama T, Motoda C, Fujiwara M, Kihara Y. Prediction of sinus node dysfunction in patients with persistent atrial flutter using the flutter cycle length. Europace 2011; 14:380-7. [DOI: 10.1093/europace/eur305] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sairaku A, Nakano Y, Oda N, Makita Y, Kajihara K, Tokuyama T, Motoda C, Fujiwara M, Kihara Y. How many electrical cardioversions should be applied for repetitive recurrences of atrial arrhythmias following ablation of persistent atrial fibrillation? Europace 2011; 13:1703-8. [DOI: 10.1093/europace/eur244] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [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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12
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Nishimaki S, Yukawa T, Makita Y, Honda H, Kikuchi N, Minamisawa S, Yokota S. Transient neonatal diabetes mellitus in an extremely preterm infant. BMJ Case Rep 2009; 2009:bcr11.2008.1185. [PMID: 21686427 DOI: 10.1136/bcr.11.2008.1185] [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: 11/03/2022] Open
Abstract
The present report concerns transient neonatal diabetes mellitus in an extremely preterm infant (gestational age 27 weeks, birth weight 718 g). The patient had intrauterine growth retardation and developed hyperglycaemia on the first day of life. Insulin administration was discontinued on the 89th day of life, which was 1 day before the original due date. This case suggests that (a) insufficient insulin secretion started at least from the second trimester of the pregnancy, and (b) the duration needed for recovery of insulin secretion was not dependent on the maturity.
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Affiliation(s)
- S Nishimaki
- Department of Paediatrics, Yokohama City University, Yokohama, Japan
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Rogus JJ, Poznik GD, Pezzolesi MG, Smiles AM, Dunn J, Walker W, Wanic K, Moczulski D, Canani L, Araki S, Makita Y, Warram JH, Krolewski AS. High-density single nucleotide polymorphism genome-wide linkage scan for susceptibility genes for diabetic nephropathy in type 1 diabetes: discordant sibpair approach. Diabetes 2008; 57:2519-26. [PMID: 18559660 PMCID: PMC2518505 DOI: 10.2337/db07-1086] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2007] [Accepted: 06/12/2008] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Epidemiological and family studies have demonstrated that susceptibility genes play an important role in the etiology of diabetic nephropathy, defined as persistent proteinuria or end-stage renal disease (ESRD) in type 1 diabetes. RESEARCH DESIGN AND METHODS To efficiently search for genomic regions harboring diabetic nephropathy genes, we conducted a scan using 5,382 informative single nucleotide polymorphisms on 100 sibpairs concordant for type 1 diabetes but discordant for diabetic nephropathy. In addition to being powerful for detecting linkage to diabetic nephropathy, this design allows linkage analysis on type 1 diabetes via traditional affected sibpair (ASP) analysis. In weighing the evidence for linkage, we considered maximum logarithm of odds score (maximum likelihood score [MLS]) values and corresponding allelic sharing patterns, calculated and viewed graphically using the software package SPLAT. RESULTS Our primary finding for diabetic nephropathy, broadly defined, is on chromosome 19q (MLS = 3.1), and a secondary peak exists on chromosome 2q (MLS = 2.1). Stratification of discordant sibpairs based on whether disease had progressed to ESRD suggested four tertiary peaks on chromosome 1q (ESRD only), chromosome 20p (proteinuria only), and chromosome 3q (two loci 58 cm apart, one for ESRD only and another for proteinuria only). Additionally, analysis of 130 ASPs for type 1 diabetes confirmed the linkage to the HLA region on chromosome 6p (MLS = 9.2) and IDDM15 on chromosome 6q (MLS = 3.1). CONCLUSIONS This study identified several novel loci as candidates for diabetic nephropathy, none of which appear to be the sole genetic determinant of diabetic nephropathy in type 1 diabetes. In addition, this study confirms two previously reported type 1 diabetes loci.
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MESH Headings
- Adult
- Chromosomes, Human, Pair 20
- Chromosomes, Human, Pair 3
- Chromosomes, Human, Pair 6
- Diabetes Mellitus, Type 1/epidemiology
- Diabetes Mellitus, Type 1/genetics
- Diabetic Nephropathies/epidemiology
- Diabetic Nephropathies/genetics
- Family Health
- Female
- Genetic Linkage
- Genetic Predisposition to Disease/epidemiology
- Genomics
- Humans
- Kidney Failure, Chronic/epidemiology
- Kidney Failure, Chronic/genetics
- Male
- Middle Aged
- Polymorphism, Single Nucleotide
- Siblings
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Affiliation(s)
- John J. Rogus
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - G. David Poznik
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
| | - Marcus G. Pezzolesi
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Adam M. Smiles
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
| | - Jonathon Dunn
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
| | - William Walker
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
| | - Krzysztof Wanic
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
| | - Dariusz Moczulski
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
- Department of Internal Medicine, Nephrology and Dialysis, Medical University of Lodz, Lodz, Poland
| | - Luis Canani
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
- Department of Endocrinology, Universidade Federal do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Shinichi Araki
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
- Department of Internal Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Yuichiro Makita
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
| | - James H. Warram
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
| | - Andrzej S. Krolewski
- Research Division, Joslin Diabetes Center, Boston, Massachusetts
- Department of Medicine, Harvard Medical School, Boston, Massachusetts
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Nishimaki S, Yukawa T, Makita Y, Honda H, Kikuchi N, Minamisawa S, Yokota S. Transient neonatal diabetes mellitus in extremely preterm infant. Arch Dis Child Fetal Neonatal Ed 2008; 93:F240-1. [PMID: 18192332 DOI: 10.1136/adc.2007.125377] [Citation(s) in RCA: 2] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
A report of transient neonatal diabetes mellitus in an extremely preterm infant (gestational age 27 weeks, birth weight 718 g). The patient had intrauterine growth retardation and developed hyperglycaemia on the first day of life. Insulin administration was discontinued on the 89th day of life, which was 1 day before the original due date. This case suggests that (a) insufficient insulin secretion started at least from the second trimester of the pregnancy; (b) the duration needed for recovery of insulin secretion was not dependent on the maturity.
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Affiliation(s)
- S Nishimaki
- Department of Paediatrics, Yokohama City University School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa, 236-0004, Japan.
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Takahashi S, Ohinata J, Makita Y, Suzuki N, Araki A, Sasaki A, Murono K, Tanaka H, Fujieda K. Skewed X chromosome inactivation failed to explain the normal phenotype of a carrier female with MECP2 mutation resulting in Rett syndrome. Clin Genet 2008; 73:257-61. [DOI: 10.1111/j.1399-0004.2007.00944.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Nakamura S, Makita Y, Takagi A, Hashimoto Y, Takahashi H, Ishida-Yamamoto A, Iizuka H. Hutchinson?Gilford progeria syndrome with severe skin calcinosis. Clin Exp Dermatol 2007; 32:525-8. [PMID: 17459069 DOI: 10.1111/j.1365-2230.2007.02432.x] [Citation(s) in RCA: 5] [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: 11/28/2022]
Abstract
We describe a case of Hutchinson-Gilford progeria syndrome (HGPS) with long-term follow-up. A 1-month-old girl with marked sclerodermatous skin changes developed various symptoms of HGPS during follow-up. These included sclerotic skin, pigmentation, skin atrophy with translucent veins, wispy hair and alopecia, nail dystrophy and decreased sweating. Marked skin calcinosis was observed over almost the entire body, a symptom that has apparently been ignored in the literature. At 16 years old, the girl underwent surgery for a skull fracture and subdural haematoma, which was followed by chronic ulceration. Wet dressing with insulin-like growth factor was used with considerable effect. Mutation of the lamin A/C (LMNA) gene mutation, which encodes nuclear lamin A and C, has been reported to be the cause of HGPS. Our case showed the mutation G608G (GGC-->GGT), which resulted in a cryptic splice site and consequently in a truncated lamin A/C protein.
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Affiliation(s)
- S Nakamura
- Department of Dermatology, Asahikawa Medical College, Asahikawa, and Takagi Dermatological Clinic, Nishi, Hokkaido, Japan.
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17
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Sekiguchi Y, Yamashita M, Sakamoto T, Tashiro K, Kurusu A, Makita Y, Maeda K, Fukui M, Hamada C, Horikoshi S, Tomino Y. Tubulointerstitial Nephritis and Uveitis Syndrome Associated with Renal Tryptaseand Chymase-positive Mast Cell Infiltration. Int J Organ Transplant Med 2007. [DOI: 10.1016/s1561-5413(07)60010-6] [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: 10/22/2022] Open
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18
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Krolewski AS, Poznik GD, Placha G, Canani L, Dunn J, Walker W, Smiles A, Krolewski B, Fogarty DG, Moczulski D, Araki S, Makita Y, Ng DPK, Rogus J, Duggirala R, Rich SS, Warram JH. A genome-wide linkage scan for genes controlling variation in urinary albumin excretion in type II diabetes. Kidney Int 2006; 69:129-36. [PMID: 16374433 DOI: 10.1038/sj.ki.5000023] [Citation(s) in RCA: 91] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The main hallmark of diabetic nephropathy is elevation in urinary albumin excretion. We performed a genome-wide linkage scan in 63 extended families with multiple members with type II diabetes. Urinary albumin excretion, measured as the albumin-to-creatinine ratio (ACR), was determined in 426 diabetic and 431 nondiabetic relatives who were genotyped for 383 markers. The data were analyzed using variance components linkage analysis. Heritability (h2) of ACR was significant in diabetic (h2=0.23, P=0.0007), and nondiabetic (h2=0.39, P=0.0001) relatives. There was no significant difference in genetic variance of ACR between diabetic and nondiabetic relatives (P=0.16), and the genetic correlation (rG=0.64) for ACR between these two groups was not different from 1 (P=0.12). These results suggested that similar genes contribute to variation in ACR in diabetic and nondiabetic relatives. This hypothesis was supported further by the linkage results. Support for linkage to ACR was suggestive in diabetic relatives and became significant in all relatives for chromosome 22q (logarithm of odds, LOD=3.7) and chromosome 7q (LOD=3.1). When analyses were restricted to 59 Caucasian families, support for linkage in all relatives increased and became significant for 5q (LOD=3.4). In conclusion, genes on chromosomes 22q, 5q and 7q may contribute to variation in urinary albumin excretion in diabetic and nondiabetic individuals.
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Affiliation(s)
- A S Krolewski
- Research Division, Joslin Diabetes Center, Harvard Medical School, Boston, Massachusetts 02215, USA.
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19
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Hagiwara S, Makita Y, Gu L, Tanimoto M, Zhang M, Nakamura S, Kaneko S, Itoh T, Gohda T, Horikoshi S, Tomino Y. Eicosapentaenoic acid ameliorates diabetic nephropathy of type 2 diabetic KKAy/Ta mice: Involvement of MCP-1 suppression and decreased ERK1/2 and p38 phosphorylation. Nephrol Dial Transplant 2005; 21:605-15. [PMID: 16282336 DOI: 10.1093/ndt/gfi208] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [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: 11/14/2022] Open
Abstract
BACKGROUND Previous studies reported that eicosapentaenoic acid (EPA) was effective against any renal diseases including diabetic nephropathy. Monocyte chemoattractant protein-1 (MCP-1) is a regulating macrophage recruitment protein, which is up-regulated in patients with diabetic nephropathy. The objectives of the present study were to evaluate the effects of EPA including renal MCP-1 expression in diabetic KKAy/Ta mice, MCP-1 production and signal transduction in mouse mesangial cells (MMCs). METHODS KKAy/Ta mice were injected with EPA ethyl ester (1 g/kg/day) intraperitoneally. Immunohistochemical staining of MCP-1, F4/80, phospho-extracellular signal-regulated kinase 1/2 (p-ERK1/2) and phospho-p38 in the renal sections were performed. EPA or specific inhibitors were incorporated in MMCs, and the levels of supernatant MCP-1 were measured. The effect of EPA on ERK1/2, c-jun NH2-terminal kinase (JNK), p38 or phosphoinositide 3-kinase (PI3K) activity in MMCs was examined using Western blot. RESULTS EPA decreased the levels of serum triglycerides, leptin, urinary albumin and MCP-1, and improved glucose intolerance, mesangial matrix accumulation and tubulointerstitial fibrosis in KKAy/Ta mice. Immunohistochemical staining of MCP-1 and F4/80 in the glomeruli and tubulointerstitial regions was decreased in the EPA-treated group. EPA and specific inhibitors of ERK1/2, JNK and PI3K decreased levels of MCP-1 in MMCs. EPA suppressed phosphorylation of ERK1/2 and p38 in MMCs, and decreased p-ERK positive cells in glomeruli of KKAy/Ta mice. CONCLUSIONS EPA ameliorates diabetic nephropathy of type 2 diabetic KKAy/Ta mice. We propose that the observed down-regulation of MCP-1 is critically involved in the beneficial effect of EPA, probably in concert with improvement of other clinical parameters.
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Affiliation(s)
- Shinji Hagiwara
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, 2-1-1 Hongo, Tokyo 113-8421, Japan
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20
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Arai R, Makita Y, Oda Y, Nagamune T. Construction of green fluorescent protein reporter genes for genotoxicity test (SOS/umu-test) and improvement of mutagen-sensitivity. J Biosci Bioeng 2005; 92:301-4. [PMID: 16233101 DOI: 10.1263/jbb.92.301] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2001] [Accepted: 07/02/2001] [Indexed: 11/17/2022]
Abstract
Green fluorescent protein (GFP) reporter genes for the bacterial umu-test were constructed. Utilization of tandem, lacUV5 and chimeric trp/umu promoters, and coexpression of the Escherichia coli recA5327 mutant enhanced the GFP expression level fourteen-fold over that of the system with only the umu promoter, thereby improving the sensitivity of the umu-test.
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Affiliation(s)
- R Arai
- Department of Chemistry and Biotechnology, Graduate School of Engineering, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
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21
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Tomino Y, Tanimoto M, Shike T, Shiina K, Fan Q, Liao J, Gohda T, Makita Y, Funabiki K. Pathogenesis and treatment of type 2 diabetic nephropathy: lessons from the spontaneous KK/Ta mouse model. Curr Diabetes Rev 2005; 1:281-6. [PMID: 18220604 DOI: 10.2174/157339905774574374] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Diabetic nephropathy is a major cause of end-stage renal failure (ESRF) in patients with both type 1 and type 2 diabetes. Many factors such as genetic and non-genetic promoters, hypertension, hyperglycemia, accumulation of advanced glycation end products (AGEs), dyslipidemia, albuminuria and proteinuria influence the progression of this disease. It is important to determine pathogenesis and treatment of this disease. However, it is difficult to investigate since human diabetes is a heterogeneous and multifactorial disease. Therefore, most of these mechanisms have been investigated in animal experiments. KK/Ta mice have a clearly different genetic background in terms of body weight, blood glucose, impaired glucose tolerance (IGT), urinary albumin excretion and serum triglyceride than BALB/c mice. Renal lesions of KK/Ta mice closely resemble those in human early diabetic nephropathy. Thus, the KK/Ta mouse may serve as a suitable model for the study of type 2 diabetes and early diabetic nephropathy in humans. We reviewed genetic susceptibility using genome-wide linkage analysis and differential display polymerase chain reaction (DD-PCR) or Northern blot analysis, and treatment of diabetic nephropathy using angiotensin type 1 (AT1) receptor blockers (ARB) or thiazolidinediones (TZDs) in KK/Ta mice.
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Affiliation(s)
- Yasuhiko Tomino
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan.
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22
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Shike T, Gohda T, Tanimoto M, Kobayashi M, Makita Y, Funabiki K, Horikoshi S, Hirose S, Shirai T, Tomino Y. Chromosomal mapping of a quantitative trait locus for the development of albuminuria in diabetic KK/Ta mice. Nephrol Dial Transplant 2005; 20:879-85. [PMID: 15769825 DOI: 10.1093/ndt/gfh665] [Citation(s) in RCA: 16] [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: 11/14/2022] Open
Abstract
BACKGROUND The KK/Ta mouse strain serves as a suitable polygenic model for human type 2 diabetes. We previously reported a genome-wide linkage analysis of KK/Ta alleles contributing to type 2 diabetes and related phenotypes such as fasting hyperglycaemia, glucose intolerance, hyperinsulinaemia, obesity and dyslipidaemia. METHODS Since KK/Ta mice spontaneously develop renal lesions closely resembling those in human diabetic nephropathy, we investigated the susceptibility loci using the KK/Ta x (BALB/c x KK/Ta) F1 backcross progeny in the present study. RESULTS A genome-wide analysis of susceptibility loci for albuminuria with microsatellite-based chromosomal maps showed a contributing KK/Ta locus, provisionally designated UA-1, with a significant linkage with the interval on chromosome 2 at 83.0 cM close to the microsatellite marker D2Mit311 with a maximum LOD of 3.5 (chi(2) = 13.2, P = 0.0003). UA-1 was different from the susceptibility loci contributing to type 2 diabetes, which we earlier identified. The mode of inheritance differed from that of hypertension. The progeny homozygous for UA-1 showed significantly higher urinary albumin levels. CONCLUSIONS Although there were no significant correlations between urinary albumin levels and other diabetic phenotypes, the group of progeny homozygous for both UA-1 and alleles for fasting hyperglycaemia showed the highest urinary albumin levels. Thus, UA-1 appears to increase the risk of diabetic nephropathy, particularly in individuals susceptible to fasting hyperglycaemia, in a gene dosage-dependent manner. There are potentially important candidate genes that may be relevant to diabetic nephropathy.
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Affiliation(s)
- Toshihide Shike
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, 2-1-1 Hongo, Bunkyoku, Tokyo 113-8421, Japan
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23
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Hagiwara S, Ohi H, Eishi Y, Kodama F, Tashiro K, Makita Y, Suzuki Y, Maeda K, Fukui M, Horikoshi S, Tomino Y. A case of renal sarcoidosis with complement activation via the lectin pathway. Am J Kidney Dis 2005; 45:580-7. [PMID: 15754281 DOI: 10.1053/j.ajkd.2004.11.020] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A 57-year-old woman with pulmonary sarcoidosis was admitted to the hospital because of an elevation of serum creatinine and blood urea nitrogen. On admission, the laboratory data suggested interstitial nephritis without proteinuria and hematuria, whereas a renal biopsy showed granulomatous interstitial nephritis and mild mesangial proliferative glomerulonephritis. Immunoglobulin and C1q deposits were negative, but mannose-binding lectin, C3, C4d, and C5b-9 deposits were marked in the glomerular mesangial areas. The lectin pathway of complement activation may have contributed to the development of glomerular injury in this patient. DNA of Propionibacterium acnes , which is now strongly suspected as the pathogen of sarcoidosis, was detected in the patient's glomerular mesangial cells; tubular epithelial cells, which were involved in granulomatous inflammation; and mononuclear cells in epithelioid granulomas by in situ hybridization. These findings may add new insights to the pathogenesis of renal sarcoidosis, including its relation to infection, because mannose-binding lectin plays a crucial role in the host defense against various pathogens. From this case of renal sarcoidosis, it is hypothesized that P acnes may be involved in pathogenesis of granulomatous interstitial nephritis and that it plays a role in glomerular complement activation via the lectin pathway.
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MESH Headings
- Anti-Inflammatory Agents/therapeutic use
- Anticoagulants/therapeutic use
- Complement Activation
- Complement C3/analysis
- Complement C4b/analysis
- Complement Membrane Attack Complex/analysis
- DNA, Bacterial/analysis
- Drug Therapy, Combination
- Female
- Glomerular Mesangium/chemistry
- Glomerular Mesangium/microbiology
- Glomerular Mesangium/pathology
- Glomerulonephritis, Membranoproliferative/drug therapy
- Glomerulonephritis, Membranoproliferative/etiology
- Glomerulonephritis, Membranoproliferative/immunology
- Glomerulonephritis, Membranoproliferative/microbiology
- Gram-Positive Bacterial Infections/complications
- Gram-Positive Bacterial Infections/microbiology
- Heparin/therapeutic use
- Histiocytosis, Langerhans-Cell/complications
- Histiocytosis, Langerhans-Cell/drug therapy
- Histiocytosis, Langerhans-Cell/immunology
- Humans
- Lung/pathology
- Lung Diseases, Interstitial/complications
- Lung Diseases, Interstitial/drug therapy
- Lung Diseases, Interstitial/immunology
- Mannose-Binding Lectin/analysis
- Methylprednisolone/therapeutic use
- Middle Aged
- Nephritis, Interstitial/drug therapy
- Nephritis, Interstitial/etiology
- Nephritis, Interstitial/immunology
- Nephritis, Interstitial/microbiology
- Peptide Fragments/analysis
- Prednisone/therapeutic use
- Propionibacterium acnes/isolation & purification
- Propionibacterium acnes/pathogenicity
- Sarcoidosis/drug therapy
- Sarcoidosis/etiology
- Sarcoidosis/immunology
- Sarcoidosis/microbiology
- Warfarin/therapeutic use
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Affiliation(s)
- Shinji Hagiwara
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
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24
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Makita Y, De Hoon MJL, Ogasawara N, Miyano S, Nakai K. Bayesian joint prediction of associated transcription factors in Bacillus subtilis. Pac Symp Biocomput 2005:507-18. [PMID: 15759655 DOI: 10.1142/9789812702456_0048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Sigma factors, often in conjunction with other transcription factors, regulate gene expression in prokaryotes at the transcriptional level. Specific transcription factors tend to co-occur with specific sigma factors. To predict new members of the transcription factor regulon, we applied Bayes rule to combine the Bayesian probability of sigma factor prediction calculated from microarray data and the sigma factor binding sequence motif, the motif score of the transcription factor associated with the sigma factor, the empirically determined distance between the transcription start site to the cis-regulatory region, and the tendency for specific sigma factors and transcription factors to co-occur. By combining these information sources, we improve the accuracy of predicting regulation by transcription factors, and also confirm the sigma factor prediction. We applied our proposed method to all genes in Bacillus subtilis to find currently unknown gene regulations by transcription factors and sigma factors.
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Affiliation(s)
- Y Makita
- Human Genome Center, Institute of Medical Science, University of Tokyo Minato-ku, Tokyo 108-8639, Japan
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25
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Abstract
Pioglitazone (PIO) has preventive effects on impaired glucose tolerance (IGT) and urinary albumin excretion in diabetes. These effects in the early stage of diabetic nephropathy have not been fully described. Endothelial constitutive nitric oxide synthase (ecNOS) might be one of the mechanisms of glomerular hyperfiltration. The objective of the present study was to evaluate the effect of PIO, including the role of ecNOS on the early stage of diabetic nephropathy in KK/Ta mice. KK/Ta mice were given PIO (10 mg/kg/d) started at 12 or 16 weeks of age for 8 or 4 weeks, respectively. They were divided into 3 groups as follows: early treatment (n = 8), late treatment (n = 8), and control group (n = 12). The urinary albumin/creatinine ratio (ACR), fasting and casual blood glucose levels, ratio of glomerular and Bowman's capsule volume (GB ratio), and systemic blood pressure were measured as phenotypic characterizations. The ecNOS and iNOS protein expression in glomeruli were evaluated by immunofluorescence. PIO, especially early treatment, improved the ACR and the GB ratio, and ecNOS protein expression was decreased in the endothelium of glomerular vessels. The iNOS protein was not detectable. There were no significant changes in the levels of fasting and casual blood glucose and systemic blood pressure among all groups. We conclude that the effect of PIO on microalbuminuria might not be due to changing systemic blood pressure and blood glucose levels. It appears that the decrease of urinary albumin excretion might be related to improvement of glomerular enlargement, including hyperfiltration, since the levels of ecNOS protein were reduced by PIO in the glomerular vessels.
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Affiliation(s)
- Mitsuo Tanimoto
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo 113-8421, Japan
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26
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de Hoon MJL, Makita Y, Imoto S, Kobayashi K, Ogasawara N, Nakai K, Miyano S. Predicting gene regulation by sigma factors in Bacillus subtilis from genome-wide data. Bioinformatics 2004; 20 Suppl 1:i101-8. [PMID: 15262787 DOI: 10.1093/bioinformatics/bth927] [Citation(s) in RCA: 21] [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: 11/14/2022] Open
Abstract
MOTIVATION Sigma factors regulate the expression of genes in Bacillus subtilis at the transcriptional level. We assess the accuracy of a fold-change analysis, Bayesian networks, dynamic models and supervised learning based on coregulation in predicting gene regulation by sigma factors from gene expression data. To improve the prediction accuracy, we combine sequence information with expression data by adding their log-likelihood scores and by using a logistic regression model. We use the resulting score function to discover currently unknown gene regulations by sigma factors. RESULTS The coregulation-based supervised learning method gave the most accurate prediction of sigma factors from expression data. We found that the logistic regression model effectively combines expression data with sequence information. In a genome-wide search, highly significant logistic regression scores were found for several genes whose transcriptional regulation is currently unknown. We provide the corresponding RNA polymerase binding sites to enable a straightforward experimental verification of these predictions.
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Affiliation(s)
- M J L de Hoon
- Human Genome Center, Institute of Medical Science, University of Tokyo, Shirokanedai, Minato-ku, Tokyo, Japan.
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27
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Gohda T, Tanimoto M, Shiina K, Ito T, Kobayashi M, Hagiwara S, Kaneko S, Makita Y, Funabiki K, Horikoshi S, Tomino Y. Altered mouse cholinephosphotransferase gene expression in kidneys of type 2 diabetic KK/TA mouse. Metabolism 2004; 53:842-6. [PMID: 15254874 DOI: 10.1016/j.metabol.2004.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 10/26/2022]
Abstract
It is generally considered that genetic factors may contribute to the susceptibility of type 2 diabetic nephropathy. The purpose of the present study is to identify molecules that contribute to the development and/or progression of this disease. Differential display was performed to isolate genes in the kidney using the KK/Ta mouse model of type 2 diabetes. The differential expression of 8 randomly chosen candidate genes (DN1-8) were verified by reverse-transcriptase polymerase chain reaction (RT-PCR) or Northern blot analysis. DN1-3 (Zn-alpha2-glycoprotein, vascular endothelial growth factor receptor [VEGFR]-2, and lactate dehydrogenase [LDH]) were overexpressed and DN7-8 (peroxisome proliferator-activated receptor [PPAR]-interacting protein [PRIP], unknown) were underexpressed in the KK/Ta mouse kidney. DN4-6 (Ezrin, transcobalamin 2, aldo-ketoreductase) did not differ between KK/Ta and control (BALB/c) mice. DN8 only showed no significant sequence similarity to previously reported genes. Molecular cloning revealed that full-length DN8 shares 89% identity with human cholinephosphotransferase 1 (hCHPT1), and we designated it as "putative" mouse cholinephosphotransferase 1 (mCHPT1). The putative mCHPT1 gene was most closely mapped to the D10Mit94 locus with the highest logarithm of odds (lod) score. In situ hybridization revealed the levels of glomerular putative mCHPT1 in BALB/c mice tended to be slightly higher than those in KK/Ta mice. The altered renal mRNA expression of these genes may be involved in the development and/or progression of diabetic nephropathy.
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MESH Headings
- Amino Acid Sequence
- Animals
- Blotting, Northern
- Chromosome Mapping
- Cloning, Molecular
- DNA, Complementary/biosynthesis
- DNA, Complementary/genetics
- Diabetes Mellitus, Type 2/enzymology
- Diabetes Mellitus, Type 2/genetics
- Diabetic Nephropathies/enzymology
- Diabetic Nephropathies/genetics
- Diacylglycerol Cholinephosphotransferase/biosynthesis
- Diacylglycerol Cholinephosphotransferase/genetics
- Gene Expression Regulation, Enzymologic/physiology
- In Situ Hybridization
- Kidney/enzymology
- Male
- Mice
- Mice, Inbred BALB C
- Molecular Sequence Data
- RNA, Messenger/biosynthesis
- RNA, Messenger/chemistry
- Reverse Transcriptase Polymerase Chain Reaction
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Affiliation(s)
- Tomohito Gohda
- Division of Nephrology, Department of Internal Medicine, Jutendo University School of Medicine, Tokyo, Japan
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Ohmori H, Ando Y, Makita Y, Onouchi Y, Nakajima T, Saraiva MJM, Terazaki H, Suhr O, Sobue G, Nakamura M, Yamaizumi M, Munar-Ques M, Inoue I, Uchino M, Hata A. Common origin of the Val30Met mutation responsible for the amyloidogenic transthyretin type of familial amyloidotic polyneuropathy. J Med Genet 2004; 41:e51. [PMID: 15060127 PMCID: PMC1735751 DOI: 10.1136/jmg.2003.014803] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- H Ohmori
- Department of Neurology, Kumamoto University School of Medicine, Kumamoto, Japan
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29
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Nishimura G, Nakashima E, Mabuchi A, Shimamoto K, Shimamoto T, Shimao Y, Nagai T, Yamaguchi T, Kosaki R, Ohashi H, Makita Y, Ikegawa S. Identification of COL2A1 mutations in platyspondylic skeletal dysplasia, Torrance type. J Med Genet 2004; 41:75-9. [PMID: 14729840 PMCID: PMC1757240 DOI: 10.1136/jmg.2003.013722] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
BACKGROUND To identify susceptibility genes for diabetic nephropathy, GeneChip Expression Analysis was employed to survey the gene expression profile of diabetic KK/Ta mouse kidneys. METHODS Kidneys from three KK/Ta and two BALB/c mice at 20 weeks of age were dissected. Total RNA was extracted and labeled for hybridizing to the Affymetrix Murine Genome U74Av2 array. The gene expression profile was compared between KK/Ta and BALB/c mice using GeneChip expression analysis software. Competitive reverse transcription-polymerase chain reaction (RT-PCR) was used to confirm the results of GeneChip for a selected number of genes. RESULTS Out of 12,490 probe pairs present on GeneChip, 98 known genes and 31 expressed sequence tags (ESTs) were found to be differentially expressed between KK/Ta and BALB/c kidneys. Twenty-one known genes and seven ESTs that increased in expression and 77 known genes and 24 ESTs that decreased in KK/Ta kidneys were identified. These genes are related to renal function, extracellular matrix expansion and degradation, signal transduction, transcription regulation, ion transport, glucose and lipid metabolism, and protein synthesis and degradation. In the vicinity of UA-1 (quantitative trait locus for the development of albuminuria in KK/Ta mice), candidate genes that showed differential expression were identified, including the Sdc4 gene for syndecan-4, Ahcy gene for S-adenosylhomocysteine hydrolase, Sstr4 gene for somatostatin receptor 4, and MafB gene for Kreisler leucine zipper protein. CONCLUSION The gene expression profile in KK/Ta kidneys is different from that in age-matched BALB/c kidneys. Altered gene expressions in the vicinity of UA-1 may be responsible for the development of albuminuria in diabetic KK/Ta mice.
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Affiliation(s)
- Qiuling Fan
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
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31
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Liao J, Kobayashi M, Kanamuru Y, Nakamura S, Makita Y, Funabiki K, Horikoshi S, Tomino Y. Effects of candesartan, an angiotensin II type 1 receptor blocker, on diabetic nephropathy in KK/Ta mice. J Nephrol 2003; 16:841-9. [PMID: 14736011] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
BACKGROUND Although therapeutic effects of angiotensin II type 1 receptor blocker (ARB) on renal injury in non-insulin dependant diabetes mellitus (NIDDM) have been demonstrated, the beneficial effects and their mechanisms in diabetic nephropathy have not been well evaluated. METHODS KK/Ta mice were divided into three groups according to the treatment: candesartan 4 mg/kg/day from 6 to 28 weeks of age (group I; early treatment); from 12 to 28 weeks of age (group II; late treatment); only vehicle (group III). BALB/c mice treated with vehicle were used as controls (group IV). Body weight (BW), systolic blood pressure (SBP), blood glucose, urinary type IV collagen and albumin excretion were measured every 4 weeks. Morphometry and immunohistology of albumin, transforming growth factor-beta1 (TGF-beta1) and Smad7 were performed in all groups. RESULTS BW and blood glucose were higher in groups I, II and III than in group IV from 8 weeks. SBP was markedly reduced in groups I and II compared with group III (p < 0.05, p < 0.005). Urinary type IV collagen and albumin excretion were increased in group III compared to group IV (p < 0.05, p < 0.005), whereas they were reduced in groups I and II when compared to group III (p < 0.05). Morphometric analysis revealed that the whole glomerular area (WGA), glomerular tuft area (GTA), extracellular matrix area (ECMA) and intraglomerular cell nuclei number (NIGCN) were significantly reduced in groups I, II and IV compared to group III at 28 weeks. In immunohistochemistry, TGF-beta1 expression in both glomeruli and tubules of groups I and II decreased compared to that of group III at 28 weeks, while Smad7 in group III glomeruli was reduced compared to that in groups I and II. CONCLUSIONS It appears that candesartan reduced urinary type IV collagen and albumin excretion, and attenuated glomerular hypertrophy and mesangial matrix accumulation by the TGF-betaS/Smad signaling pathway in KK/Ta mice with diabetic nephropathy.
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Affiliation(s)
- Jie Liao
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
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32
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Gohda T, Makita Y, Shike T, Tanimoto M, Funabiki K, Horikoshi S, Tomino Y. Identification of epistatic interaction involved in obesity using the KK/Ta mouse as a Type 2 diabetes model: is Zn-alpha2 glycoprotein-1 a candidate gene for obesity? Diabetes 2003; 52:2175-81. [PMID: 12882938 DOI: 10.2337/diabetes.52.8.2175] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
The KK/Ta strain serves as a suitable polygenic mouse model for the common form of type 2 diabetes associated with obesity in humans. Recently, we reported the susceptibility loci contributing to type 2 diabetes and related phenotypes in KK/Ta mice. In this study, we focused on expression in the kidneys and liver of KK/Ta and BALB/c mice using differential display (DD) PCR. Zn-alpha(2) glycoprotein-1 (Azgp1) mRNA levels were increased in the kidneys and liver in KK/Ta mice, and sequence analysis revealed a missense mutation. We analyzed the relationship between this polymorphism and various phenotypes in 208 KK/Ta x (BALB/c x KK/Ta) F1 backcross mice. Statistical analysis revealed that Azgp1 and D17Mit218 exhibit a suggestive linkage to body weight (8 weeks) (logarithm of odds 2.3 and 2.9, respectively). Moderate gene-gene interactions were observed at these loci. Adiponectin mRNA levels in 3T3-L1 cells transfected with the expression pcDNA 3.1 vector containing Azgp1 coding sequence of KK/Ta mice were significantly higher than those of BALB/c mice. These results suggest that Azgp1 is a possible candidate gene for regulation of body weight, elucidation of polygenic inheritance, and age-dependent changes in the genetic control of obesity.
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Affiliation(s)
- Tomohito Gohda
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan
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Araki SI, Ng DPK, Krolewski B, Wyrwicz L, Rogus JJ, Canani L, Makita Y, Haneda M, Warram JH, Krolewski AS. Identification of a common risk haplotype for diabetic nephropathy at the protein kinase C-beta1 (PRKCB1) gene locus. J Am Soc Nephrol 2003; 14:2015-24. [PMID: 12874455 DOI: 10.1097/01.asn.0000077347.27669.5c] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Abnormal activation of protein kinase C-beta isoforms in the diabetic state has been implicated in the development of diabetic nephropathy. It is thus plausible that DNA sequence differences in the protein kinase C-beta1 gene (PRKCB1), which encodes both betaI and betaII isoforms, may influence susceptibility to nephropathy. Nine single-nucleotide polymorphisms (SNP) in PRKCB1 were tested for association with diabetic nephropathy in type I diabetes mellitus, by using both case-control and family-study designs. Allele and genotype distributions of two SNP in the promoter (--1504C/T and --546C/G) differed significantly between case patients and control patients (P < 0.05). These associations were particularly strong with diabetes mellitus duration of <24 yr (P = 0.002). The risk of diabetic nephropathy was higher among carriers of the T allele of the --1504C/T SNP, compared with noncarriers (odds ratio, 2.54; 95% confidence interval, 1.39 to 4.62), and among carriers of the G allele of the --546C/G SNP (odds ratio, 2.45; 95% confidence interval, 1.37 to 4.38). Among individuals with diabetes mellitus duration of >/==" BORDER="0">24 yr, these two SNP were not associated with diabetic nephropathy. These positive findings were confirmed by using the family-based transmission disequilibrium test. The T-G haplotype, with both risk alleles, was transmitted more frequently than expected from heterozygous parents to offspring who developed diabetic nephropathy during the first 24 yr of diabetes mellitus. It is concluded that DNA sequence differences in the promoter of PRKCB1 contribute to diabetic nephropathy susceptibility in type I diabetes mellitus.
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Affiliation(s)
- Shin-Ichi Araki
- Section on Genetics and Epidemiology, Research Division, Joslin Diabetes Center, Boston, Massachusetts, USA
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Makita Y, Moczulski DK, Bochenski J, Smiles AM, Warram JH, Krolewski AS. Methylenetetrahydrofolate reductase gene polymorphism and susceptibility to diabetic nephropathy in type 1 diabetes. Am J Kidney Dis 2003; 41:1189-94. [PMID: 12776270 DOI: 10.1016/s0272-6386(03)00350-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND The T allele of the C677T polymorphism in the methylenetetrahydrofolate reductase (MTHFR) gene is associated with elevated plasma homocysteine levels, and it has been postulated to be a risk factor for the development of diabetic nephropathy. We examined this hypothesis in both a case-control and a follow-up study in individuals with type 1 diabetes. METHODS In the case-control study, the control group included 310 subjects with normoalbuminuria and diabetes duration of 15 years or greater, and the case group included 88 prevalent cases with end-stage renal disease (ESRD). The follow-up study included 235 subjects with overt proteinuria followed up for 6 years (on average), during which time ESRD developed in 69 subjects. DNA from each individual was genotyped for the C677T MTHFR polymorphism. RESULTS The frequency of TT homozygotes did not vary significantly among the four groups: 10% in controls, 15% in prevalent cases of ESRD, 13% in cases with new-onset ESRD, and 11% in those who remained proteinuric during follow-up (P = 0.9, 6 df). Similarly, frequency of the T allele varied little among the same groups (range, 33% to 36%; P = 0.9, 3 df) During follow-up, 52 of 323 individuals with diabetic nephropathy died. Total mortality rates were 4.3/100 person-years in TT homozygotes, 2.4/100 person-years in CT heterozygotes, and 3.0/100 person-years in CC homozygotes (P = 0.55, 2 df). CONCLUSION Using both a large case-control and a follow-up study, we found no evidence that the C677T MTHFR polymorphism has a significant role in the development of diabetic nephropathy in type 1 diabetes.
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Affiliation(s)
- Yuichiro Makita
- Research Division, Joslin Diabetes Center, Boston, MA 02215-5397, USA
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35
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Nagai T, Matsumoto N, Kurotaki N, Harada N, Niikawa N, Ogata T, Imaizumi K, Kurosawa K, Kondoh T, Ohashi H, Tsukahara M, Makita Y, Sugimoto T, Sonoda T, Yokoyama T, Uetake K, Sakazume S, Fukushima Y, Naritomi K. Sotos syndrome and haploinsufficiency of NSD1: clinical features of intragenic mutations and submicroscopic deletions. J Med Genet 2003; 40:285-9. [PMID: 12676901 PMCID: PMC1735419 DOI: 10.1136/jmg.40.4.285] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
BACKGROUND Endothelial nitric oxide synthase gene and the development of diabetic nephropathy BACKGROUND Intron 4 insertion/deletion polymorphism of the constitutive endothelial nitric oxide synthase (ecNOS) gene may be related to diabetic nephropathy. METHODS A case-control study was performed in three groups of Japanese patients with Type 2 diabetes mellitus, which including 123 patients with advanced diabetic nephropathy, 107 patients with overt proteinuria and normal serum creatinine level, and a control group of 203 patients with normal renal function despite having diabetes for over 10 years. Additionally, logistic regression analysis was used to assess the findings. RESULTS When we examined the a-deletion/b-insertion in intron 4 of ecNOS gene, the genotype and allele frequencies were not significantly different between the patients with advanced diabetic nephropathy (a/a 2.4, a/b 21.9, b/b 75.5, 'a' 13.4, 'b' 86.6%), the patients with overt proteinuria (a/a 2.8, a/b 15.8, b/b 81.4, 'a' 10.7, 'b' 89.3%) and the control group (a/a 1.4, a/b 21.6, b/b 76.8, 'a' 12.8, 'b' 87.7%). Logistic regression analysis showed that the ecNOS intron4 a-allele frequency was not the related to nephropathy (P = 0.88). CONCLUSION We conclude that there is no association of the ecNOS gene polymorphism with the development of diabetic nephropathy in Japanese patients with type 2 diabetes.
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Affiliation(s)
- Tomoaki Shimizu
- Department of Medicine, Metabolism and Endocrinology, Juntendo University School of Medicine, Hongo 3-1-1, Bunkyo, Zip# 113-8421 Tokyo, Japan
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Makita Y, Tomino Y. Genetic background: patients. Contrib Nephrol 2002:1-8. [PMID: 11665279 DOI: 10.1159/000060148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Y Makita
- Division of Nephrology, Department of Internal Medicine, Juntendo University School of Medicine, Tokyo, Japan.
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39
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Makita Y. [Tricho-rhino-phalangeal syndrome, type III]. Ryoikibetsu Shokogun Shirizu 2002:757-8. [PMID: 11529009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- Y Makita
- Department of Public Health and Pediatrics, Asahikawa Medical College
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40
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Makita Y. [Rieger syndrome]. Ryoikibetsu Shokogun Shirizu 2002:585-6. [PMID: 11528909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- Y Makita
- Department of Public Health and Pediatrics, Asahikawa Medical College
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41
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Makita Y. [Trichothiodystrophy]. Ryoikibetsu Shokogun Shirizu 2002:759-60. [PMID: 11529010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- Y Makita
- Department of Public Health and Pediatrics, Asahikawa Medical College
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Omura M, Ogata R, Kubo K, Shimasaki Y, Aou S, Oshima Y, Tanaka A, Hirata M, Makita Y, Inoue N. Two-generation reproductive toxicity study of tributyltin chloride in male rats. Toxicol Sci 2001; 64:224-32. [PMID: 11719705 DOI: 10.1093/toxsci/64.2.224] [Citation(s) in RCA: 86] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A 2-generation reproductive toxicity study of tributyltin chloride (TBTCl) was conducted in male rats using dietary concentrations of 5, 25, and 125 ppm TBTCl to evaluate its effect on sexual development and the reproductive system. F1 males were killed on postnatal day 119 and F2 males were killed on postnatal day 91. TBTCl affected the male reproductive system of rats. The weights of the testis and epididymis were decreased and homogenization-resistant spermatid and sperm count were reduced mainly in the 125 ppm TBTCl group. Histopathologic changes were also observed in the testis of this group and included vacuolization of the seminiferous epithelium, spermatid retention, and delayed spermiation. However, the changes were minimal in nature. The weight of the ventral prostate was decreased to 84% of the control value in the 125 ppm group in the F1 generation and decreased to 84 and 69% of the control value in the 25 ppm and 125 ppm TBTCl groups, respectively, in the F2 generation. The serum 17beta-estradiol concentration was also decreased to 55% of the control value in the 125 ppm group in the F1 generation and decreased to 78 and 57% of the control value in the 25 ppm and 125 ppm TBTCl groups, respectively, in the F2 generation. However, the serum concentrations of luteinizing hormone (LH) and testosterone were not decreased in these groups. These changes corresponded with those caused by aromatase inhibition and therefore TBTCl might be a weak aromatase inhibitor in male rats.
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Affiliation(s)
- M Omura
- Department of Hygiene, Graduate School of Medical Sciences, Kyushu University, Fukuoka 812-8582, Japan.
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Gohda T, Makita Y, Shike T, Kobayashi M, Funabiki K, Haneda M, Kikkawa R, Watanabe T, Baba T, Yoshida H, Tomino Y. Association of the DD genotype and development of Japanese type 2 diabetic nephropathy. Clin Nephrol 2001; 56:475-80. [PMID: 11770799] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023] Open
Abstract
We determined the insertion/deletion (I/D) polymorphism of the angiotensin-coverting enzyme (ACE) gene in a multicenter trial of ethnically homogeneous Japanese type 2 diabetes mellitus (DM) patients. All patients (n = 748) were divided into 5 groups as follows: group I (normoalbuminuric patients), group II (microalbuminuric patients), group III (overt albuminuric patients with serum creatinine (s-Cr) levels of less than 1.2 mg/dl), group IV (overt albuminuric patients with s-Cr levels of more than 1.3 mg/dl but excluding hemodialysis patients), and group V (hemodialysis patients). We selected patients with a diabetic duration of more than 15 years in the mild stage (groups I and II), but placed no limits on those in the advanced and end-stages (groups III, IV and V). The frequency of the DD genotype was slightly higher in the advanced and end stages. The frequency of the DD genotype in the mild stage differed from that in the end stage (II/ID/DD 47.8%/41.0%/11.2% vs. 37.0 %/43.3%/19.7% p = 0.07, II + ID/DD 88.8%/11.2% vs. 80.3%/19.7%, p < 0.05). D allele frequency in the mild stage also differed from that in the end stage (I/D 68.3%/31.7% vs. 58.7%/41.3%, p < 0.02). The presence of the DD genotype increased the risk of end-stage renal disease (ESRD) more than that of the other genotypes (odds ratio ID/II = 1.37, 95% CI 0.82-2.27; DD/II = 2.27, 95% CI 1.12-4.61). It appears that the DD genotype is associated with progression of Japanese type 2 diabetic nephropathy.
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Affiliation(s)
- T Gohda
- Department of Medicine, Juntendo University School of Medicine, Tokyo, Japan
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Ishii T, Makita Y, Ogawa A, Amamiya S, Yamamoto M, Miyamoto A, Oki J. The role of different X-inactivation pattern on the variable clinical phenotype with Rett syndrome. Brain Dev 2001; 23 Suppl 1:S161-4. [PMID: 11738865 DOI: 10.1016/s0387-7604(01)00344-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [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: 11/23/2022]
Abstract
A gene for Methyl-CpG binding protein 2 (MECP2), which locates Xq28, was recently found to be responsible for Rett syndrome. Although mutational analyses of MECP2 in Rett syndrome have been extensively analyzed, the mechanism(s) by which variable clinical phenotype occurred between affected monozygotic twins or sisters have not been clarified. We hypothesized that the difference of X-inactivation pattern might explain this phenomenon. With the method based on methylation-specific PCR, we analyzed polymorphic trinucleotide repeat in the human andorogen receptor gene mapped on Xq11.2-12, using DNA samples derived from previously described monozygotic twins and sisters together with their parents. Their clinical phenotypes were reported to be significantly different between siblings. We found that (1) maternally derived allele is predominantly active than paternally derived one in three out of four patients analyzed, (2) remaining one twin patient, whose ratio of active paternal allele is almost the same level as maternal allele, showed far much severe phenotype when compared with her counterpart. Together with the finding that most of the alleles with de novo mutation are from paternal X chromosome in sporadic cases, the existence of a mechanism that suppresses mutated paternal allele activation, resulting skewed X-inactivation to make clinical phenotype milder, might be speculated. Thus, when this mechanism fails to work sufficiently by an unknown reason, severer clinical phenotype could occur.
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Affiliation(s)
- T Ishii
- Department of Pediatrics, Asahikawa Medical College, 2-1-1-1, Midorigaoka-higashi, Asahikawa, 078-8510, Hokkaido, Japan.
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Kuzuya M, Ito K, Kondo S, Makita Y. A new drug delivery system using plasma-irradiated pharmaceutical aids. VIII. Delayed-release of theophylline from double-compressed tablet composed of eudragit as wall material. Chem Pharm Bull (Tokyo) 2001; 49:1586-92. [PMID: 11767079 DOI: 10.1248/cpb.49.1586] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The rapid release from a double-compressed tablet containing theophylline as a core drug with the pH-dependent water-soluble polymers, Eudragit L100, S100 or L100-55 used as a wall material was suppressed by argon plasma-irradiation due to an effect of inter-segmental cross-link reactions on the decrease in the surface polymer solubility of outer layer. In addition, the rapid theophylline release from the double-compressed tablet of Eudragit L100-55 with a lower glass transition temperature (Tg) has converted into the delayed-release system under a set of plasma operational conditions due to an additional effect of plasma heat flux on softening of Eudragit L100-55 surface resulting in the formation of the film-like surface with a particle-particle interlinking of the outer layer.
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Affiliation(s)
- M Kuzuya
- Laboratory of Pharmaceutical Physical Chemistry, Gifu Pharmaceutical University, Japan.
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46
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Ohmori H, Makita Y. [Ataxia, Friedreich type]. Ryoikibetsu Shokogun Shirizu 2001:236-7. [PMID: 11462417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- H Ohmori
- Department of Public Health, Asahikawa Medical College
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47
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Makita Y. [Blau syndrome]. Ryoikibetsu Shokogun Shirizu 2001:274-5. [PMID: 11462436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Y Makita
- Department of Public Health, Asahikawa Medical College
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48
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Makita Y. [Ataxia-hypogonadism syndrome (Boucher-Neuhäuser syndrome)]. Ryoikibetsu Shokogun Shirizu 2001:238-9. [PMID: 11462418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Y Makita
- Department of Public Health, Asahikawa Medical College
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49
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Makita Y. [Barth syndrome]. Ryoikibetsu Shokogun Shirizu 2001:254-5. [PMID: 11462427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Y Makita
- Department of Public Health, Asahikawa Medical College
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50
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Makita Y. [Bladder extrophy]. Ryoikibetsu Shokogun Shirizu 2001:273. [PMID: 11462435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Affiliation(s)
- Y Makita
- Department of Public Health, Asahikawa Medical College
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