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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, 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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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Kitahara J, Yoshinaga T, Kakihara S, Hirano T, Imai A, Miyahara T, Yazaki M, Sekijima Y, Murata T. Ocular findings in patients with acquired ATTRv amyloidosis following domino liver transplantation. PLoS One 2023; 18:e0291716. [PMID: 37713404 PMCID: PMC10503697 DOI: 10.1371/journal.pone.0291716] [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] [Received: 05/16/2023] [Accepted: 09/04/2023] [Indexed: 09/17/2023] Open
Abstract
PURPOSE To investigate the presence of amyloidosis-related ocular findings in patients who received domino liver transplantation from ATTRv amyloidosis donors. METHODS We reviewed the ocular findings in patients who had previously undergone domino liver transplantation and received ophthalmologic examinations between January 2009 and March 2023. The presence of amyloidosis-related ocular findings was retrospectively assessed by two ophthalmologists. RESULTS During the study period, a total of 7 patients with 14 eyes were examined. All patients were considered as acquired ATTRv amyloidosis. The mean age at the final visit was 64.6±8.4 years (52-75 years), and the mean time since domino liver transplantation was 167.6±76.2 months (69-257 months). The two evaluators' assessments for amyloidosis-related ocular findings were completely identical. No amyloid fibril deposition was observed in the pupil, lens, or vitreous. Five patients (10 eyes) had a Schirmer test result of 5mm or less than 5 mm, and four patients with a total of 8 eyes underwent fluorescein angiography and indocyanine green angiography, and no evidence of retinal amyloid angiopathy was found on fluorescein angiography. However, three patients with 6 eyes showed choroidal amyloid angiopathy on indocyanine green angiography. CONCLUSION While cases of choroidal amyloid angiopathy were observed, serious amyloidosis-related ocular complications such as vitreous opacity or secondary glaucoma did not occur even in the long term after domino liver transplantation.
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Affiliation(s)
- Junya Kitahara
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Tsuneaki Yoshinaga
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Nagano, Japan
- Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Shinji Kakihara
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Takao Hirano
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Teruyoshi Miyahara
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Masahide Yazaki
- Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
- Clinical Laboratory Sciences Division, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Yoshiki Sekijima
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Nagano, Japan
- Institute for Biomedical Sciences, Shinshu University, Nagano, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
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Kitahara J, Kakihara S, Mukawa S, Hirano T, Imai A, Miyahara T, Murata T. Long-term surgical results of trabeculectomy for secondary glaucoma in Val30Met hereditary transthyretin amyloidosis. Sci Rep 2023; 13:12755. [PMID: 37550352 PMCID: PMC10406936 DOI: 10.1038/s41598-023-40029-4] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Accepted: 08/03/2023] [Indexed: 08/09/2023] Open
Abstract
This study reports the long-term results of trabeculectomy (LEC) for secondary glaucoma in hereditary transthyretin (ATTRv) amyloidosis patients and its correlation with prior vitrectomy. A retrospective case series was conducted involving 31 consecutive eyes of 20 ATTRv amyloidosis patients who underwent LEC between 2007 and 2020. The mean follow-up period was 73.2 ± 37.0 months (range: 20-181 months). Postoperative intraocular pressures (IOPs) were evaluated based on the following criteria: (a) IOP between 6 and 21 mmHg without additional glaucoma surgeries, except for laser suture lysis, (b) IOP between 6 and 15 mmHg without additional glaucoma surgeries, except for laser suture lysis, and (c) IOP between 6 and 21 mmHg without additional glaucoma surgeries, except for needling and laser suture lysis. Kaplan-Meier analysis revealed survival rates after LEC of 0.52 at 36 months, 0.42 at 60 months, and 0.25 at 84 months under criterion (a); 0.49 at 36 months, 0.27 at 60 months, and 0.11 at 84 months under criterion (b); and 0.76 at 36 months, 0.71 at 60 months, and 0.65 at 84 months under criterion (c). Eyes with a history of small gauge transconjunctival vitrectomy (SGTV) exhibited a tendency towards lower survival rates, although no statistically significant difference was observed (log-rank test; p = 0.193 under criterion (a) and p = 0.0553 under criterion (b)). Our findings suggest that LEC and additional needling procedures can provide some control over IOP; however, the overall postoperative outcomes of LEC for ATTRv amyloidosis remain unsatisfactory, even in the era of SGTV with reduced conjunctival scarring.
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Affiliation(s)
- Junya Kitahara
- Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Shinji Kakihara
- Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan.
| | - Shuji Mukawa
- Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Takao Hirano
- Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Teruyoshi Miyahara
- Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano, 390-8621, Japan
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Kakihara S, Matsuda Y, Hirabayashi K, Imai A, Iesato Y, Sakurai T, Kamiyoshi A, Tanaka M, Ichikawa-Shindo Y, Kawate H, Zhao Y, Zhang Y, Guo Q, Li P, Onishi N, Murata T, Shindo T. Role of Adrenomedullin 2/Intermedin in the Pathogenesis of Neovascular Age-Related Macular Degeneration. J Transl Med 2023; 103:100038. [PMID: 36870288 DOI: 10.1016/j.labinv.2022.100038] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 01/11/2023] Open
Abstract
Adrenomedullin 2 (AM2; also known as intermedin) is a member of the adrenomedullin (AM) peptide family. Similarly to AM, AM2 partakes in a variety of physiological activities. AM2 has been reported to exert protective effects on various organ disorders; however, its significance in the eye is unknown. We investigated the role of AM2 in ocular diseases. The receptor system of AM2 was expressed more abundantly in the choroid than in the retina. In an oxygen-induced retinopathy model, physiological and pathologic retinal angiogenesis did not differ between AM2-knockout (AM2-/-) and wild-type mice. In contrast, in laser-induced choroidal neovascularization, a model of neovascular age-related macular degeneration, AM2-/- mice had enlarged and leakier choroidal neovascularization lesions, with exacerbated subretinal fibrosis and macrophage infiltration. Contrary to this, exogenous administration of AM2 ameliorated the laser-induced choroidal neovascularization-associated pathology and suppressed gene expression associated with inflammation, fibrosis, and oxidative stress, including that of VEGF-A, VEGFR-2, CD68, CTGF, and p22-phox. The stimulation of human adult retinal pigment epithelial (ARPE) cell line 19 cells with TGF-β2 and TNF-α induced epithelial-to-mesenchymal transition (EMT), whereas AM2 expression was also elevated. The induction of EMT was suppressed when the ARPE-19 cells were pretreated with AM2. A transcriptome analysis identified 15 genes, including mesenchyme homeobox 2 (Meox2), whose expression was significantly altered in the AM2-treated group compared with that in the control group. The expression of Meox2, a transcription factor that inhibits inflammation and fibrosis, was enhanced by AM2 treatment and attenuated by endogenous AM2 knockout in the early phase after laser irradiation. The AM2 treatment of endothelial cells inhibited endothelial to mesenchymal transition and NF-κB activation; however, this effect tended to be canceled following Meox2 gene knockdown. These results indicate that AM2 suppresses the neovascular age-related macular degeneration-related pathologies partially via the upregulation of Meox2. Thus, AM2 may be a promising therapeutic target for ocular vascular diseases.
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Affiliation(s)
- Shinji Kakihara
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Yorishige Matsuda
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Kazutaka Hirabayashi
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Akira Imai
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Yasuhiro Iesato
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Takayuki Sakurai
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Life Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Akiko Kamiyoshi
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Life Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Megumu Tanaka
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - Yuka Ichikawa-Shindo
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - Hisaka Kawate
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - Yunlu Zhao
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - Yan Zhang
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - QianQian Guo
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - Peixuan Li
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - Naho Onishi
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Takayuki Shindo
- Department of Cardiovascular Research, Shinshu University School of Medicine, Nagano, Japan; Department of Life Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan.
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Kakihara S, Hirano T, Kitahara J, Matsuda Y, Imai A, Miyahara T, Murata T. Application of optical coherence tomography angiography to assess systemic severity in patients with hereditary transthyretin amyloidosis. PLoS One 2022; 17:e0275180. [PMID: 36156600 PMCID: PMC9512205 DOI: 10.1371/journal.pone.0275180] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 09/12/2022] [Indexed: 11/19/2022] Open
Abstract
Hereditary transthyretin amyloidosis is an autosomal dominant form of amyloidosis caused by an abnormality in transthyretin, with various ocular manifestations. Among these, ocular amyloid angiopathy has attracted attention because of its direct link to visual impairment and its correlation with systemic severity. We hypothesized that optical coherence tomography angiographic parameters would be useful biomarkers of amyloidosis systemic severity and investigated their correlation with the systemic severity score. The primary outcome was the correlation between the systemic severity score and choriocapillaris flow deficit percentage. Secondary outcomes were the correlations between the systemic severity score and retinal optical coherence tomography angiographic parameters, including foveal avascular zone size and circularity and superficial/deep/total retinal perfusion and vessel densities. The choroidal and retinal vasculature was quantified in 36 eyes from 36 patients (age, 51.8±12.1 years; disease duration, 13.4±6.2 years). Ten eyes had a history of vitrectomy for vitreous opacity. Choriocapillaris flow deficit percentage was not significantly correlated with the systemic severity score (Spearman’s rank correlation: r = 2.96×10−2, p = 0.863). Similarly, foveal avascular zone size and circularity, and superficial/deep/total retinal perfusion and vessel densities were not significantly correlated with the systemic severity score. These results may indicate that optical coherence tomography angiographic parameters are not sufficient to predict amyloidosis severity.
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Affiliation(s)
- Shinji Kakihara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
- * E-mail:
| | - Takao Hirano
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Junya Kitahara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Yorishige Matsuda
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Teruyoshi Miyahara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
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Hirabayashi K, Hoshiyama K, Imai A, Iesato Y, Hirano T, Murata T. Relationship between central retinal sensitivity, thickness, perfusion density and visual acuity in patients with branch retinal vein occlusion. Acta Ophthalmol 2022; 100:e610-e611. [PMID: 33719154 DOI: 10.1111/aos.14841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 02/02/2021] [Accepted: 02/23/2021] [Indexed: 11/30/2022]
Affiliation(s)
| | - Ken Hoshiyama
- Department of Ophthalmology Shinshu University School of Medicine Nagano Japan
| | - Akira Imai
- Department of Ophthalmology Shinshu University School of Medicine Nagano Japan
| | - Yasuhiro Iesato
- Department of Ophthalmology Shinshu University School of Medicine Nagano Japan
| | - Takao Hirano
- Department of Ophthalmology Shinshu University School of Medicine Nagano Japan
| | - Toshinori Murata
- Department of Ophthalmology Shinshu University School of Medicine Nagano Japan
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Kakihara S, Hirano T, Kitahara J, Matsuda Y, Imai A, Miyahara T, Murata T. OCULAR ANGIOGRAPHIC FEATURES IN JAPANESE PATIENTS WITH VAL30MET HEREDITARY TRANSTHYRETIN AMYLOIDOSIS. Retina 2022; 42:210-215. [PMID: 34483312 DOI: 10.1097/iae.0000000000003291] [Citation(s) in RCA: 4] [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] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To investigate ocular angiographic features of hereditary transthyretin amyloidosis with transthyretin Val30Met mutation (hATTR-V30M) in Japanese patients. METHODS We retrospectively reviewed 102 eyes of 51 patients with hATTR-V30M who underwent fluorescein angiograms and indocyanine green angiograms between 2012 and 2018. Systemic severity score, fluorescein angiograms, indocyanine green angiograms, and ocular amyloidosis presentations at the final angiograms and subsequent neovascular events were evaluated. Primary outcomes were the frequency of choroidal amyloid angiopathy and retinal amyloid angiopathy (RAA). Secondary outcomes were their correlations to the systemic severity score. RESULTS Six eyes could not be evaluated by fluorescein angiogram because of vitreous opacity. Of 96 eyes evaluated, RAA was detected in 36 (37.5%). Neovascularization was not detected. Indocyanine green angiogram indicated choroidal amyloid angiopathy in 46/51 patients (90.2%), with distinct patterns-diffuse (n = 6), focal (n = 14), and punctiform (n = 26)-based on late-phase hypercyanescence. Retinal amyloid angiopathy and choroidal amyloid angiopathy grades were associated with systemic severity (ρ = 0.57 and 0.50, respectively; both P < 0.05). At 35.4 ± 28.4 (0-96) months, iris-rubeosis was observed in one eye and vitreous hemorrhage in two. CONCLUSION Retinal amyloid angiopathy was less common and choroidal amyloid angiopathy was frequent, and their severity correlated with the systemic severity score. The frequencies of RAA and subsequent neovascular events in this study may suggest regional differences in the ocular angiographic features of hATTR-V30M.
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Affiliation(s)
- Shinji Kakihara
- Department of Ophthalmology, School of Medicine, Shinshu University, Nagano, Japan
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Ogata K, Imai A, Sato S, Nishino K, Watanabe S, Somfai T, Kobayashi E, Takeda K. Effects of reduced glutathione supplementation in semen freezing extender on frozen-thawed bull semen and in vitro fertilization. J Reprod Dev 2021; 68:53-61. [PMID: 34866119 PMCID: PMC8872743 DOI: 10.1262/jrd.2021-079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Indexed: 11/20/2022] Open
Abstract
During cryopreservation, spermatozoa may suffer cold and cryo-induced injuries -associated with alterations in cell defense systems- that are detrimental to their function and subsequent fertility. This study aimed to determine the efficacy of supplementing the semen freezing extender with the antioxidant reduced glutathione (GSH) in cattle. Semen was collected from four bulls and diluted in a freezing extender supplemented with or without GSH (0, 1, 5, and 10 mM) before the cooling step of the cryopreservation process. After thawing, the quality of the frozen-thawed semen was investigated for motility, viability, acrosomal and DNA integrity, and subsequent embryo development after in vitro fertilization of bovine oocytes. Additionally, semen from one of the bulls was used to analyze semen antioxidative potential, sperm penetration into oocytes, male pronucleus formation rate, and embryo DNA integrity. The sperm quality varied among bulls after GSH supplementation. One bull had decreased sperm total motility, and two bulls had decreased sperm DNA integrity. GSH supplementation had positive effects on embryo development for three bulls. Two of them showed both improved cleavage and blastocyst formation rates, while the other one only showed an improved cleavage rate. We observed positive effects on early male pronucleus formation and no negative effects on DNA integrity and cell number in blastocyst stage embryos. Although the effect varies depending on individual bulls and GSH concentration, GSH supplementation in semen may improve in vitro embryo production from frozen semen.
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Affiliation(s)
- Kazuko Ogata
- Institute of Livestock and Grassland Science (NILGS), National Agriculture and Food Research Organization (NARO), Ibaraki 305-0901, Japan
| | - Akira Imai
- Hiroshima Prefectural Livestock Technology Research Center, Hiroshima 739-0151, Japan
| | - Shinya Sato
- Hiroshima Prefectural Livestock Technology Research Center, Hiroshima 739-0151, Japan
| | - Kagetomo Nishino
- Beef Cattle Institute, Ibaraki Prefectural Livestock Research Center, Ibaraki 319-2224, Japan
| | - Shinya Watanabe
- Institute of Livestock and Grassland Science (NILGS), National Agriculture and Food Research Organization (NARO), Ibaraki 305-0901, Japan
| | - Tamas Somfai
- Institute of Agrobiological Sciences, NARO, Ibaraki 305-8518, Japan
| | - Eiji Kobayashi
- Institute of Livestock and Grassland Science (NILGS), National Agriculture and Food Research Organization (NARO), Ibaraki 305-0901, Japan
| | - Kumiko Takeda
- Institute of Livestock and Grassland Science (NILGS), National Agriculture and Food Research Organization (NARO), Ibaraki 305-0901, Japan
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Kakihara S, Hirano T, Imai A, Miyahara T, Murata T. Comments on pupillometry: An objective test to assess endocular hereditary transthyretin amyloidosis. Eur J Ophthalmol 2021; 32:NP332-NP333. [PMID: 34169778 DOI: 10.1177/11206721211028047] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Shinji Kakihara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Takao Hirano
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Teruyoshi Miyahara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
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11
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Miyaura K, Fujii T, Kubo T, Shinjoh H, Kato M, Toyofuku K, Niiya A, Kobayashi R, Ozawa Y, Murakami K, Morota M, Imai A, Ito Y, Kagami Y. PO-0169 Effects of uncertainty with Strut Adjusted Volume Implant applicator in Japan. Radiother Oncol 2021. [DOI: 10.1016/s0167-8140(21)06328-3] [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: 10/21/2022]
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12
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Takeda K, Kobayashi E, Ogata K, Imai A, Sato S, Adachi H, Hoshino Y, Nishino K, Inoue M, Kaneda M, Watanabe S. Differentially methylated CpG sites related to fertility in Japanese Black bull spermatozoa: epigenetic biomarker candidates to predict sire conception rate. J Reprod Dev 2021; 67:99-107. [PMID: 33441501 PMCID: PMC8075730 DOI: 10.1262/jrd.2020-137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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] [Indexed: 11/20/2022] Open
Abstract
For semen suppliers, predicting the low fertility of service bull candidates before artificial insemination would help prevent economic loss; however,
predicting bull fertility through in vitro assessment of semen is yet to be established. In the present study, we focused on the methylated CpG
sites of sperm nuclear DNA and examined methylation levels to screen new biomarkers for predicting bull fertility. In frozen-thawed semen samples collected from
Japanese Black bulls, for which the sire conception rate (SCR) was recorded, the methylation level of each CpG site was analyzed using human methylation
microarray. According to regression analysis, 143 CpG sites related to SCR were significantly differentially methylated. Whole genome bisulfite sequence data
were obtained from three semen samples and the differentially methylated regions (DMRs) that included the target CpG sites selected by human methylation
microarray were confirmed. Using combined bisulfite restriction analysis, fertility-related methylation changes were detected in 10 DMRs. With the exception of
one DMR, the methylation levels of these DMRs were significantly different between groups with high fertility (> 50%) and low fertility (< 40%). From
multiple regression analysis of methylation levels and SCR, three DMRs were selected that could effectively predict bull fertility. We suggest that these
fertility-related differences in spermatozoal methylation levels could be new epigenetic biomarkers for predicting bull fertility.
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Affiliation(s)
- Kumiko Takeda
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Eiji Kobayashi
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Kazuko Ogata
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Akira Imai
- Hiroshima Prefectural Livestock Technology Research Center, Hiroshima 739-0151, Japan
| | - Shinya Sato
- Hiroshima Prefectural Livestock Technology Research Center, Hiroshima 739-0151, Japan
| | - Hiromichi Adachi
- Hida Beef Cattle Research, Gifu Prefectural Livestock Research Institute, Gifu 506-0101, Japan
| | | | - Kagetomo Nishino
- Beef Cattle Institute, Ibaraki Prefectural Livestock Research Center, Ibaraki 319-2224, Japan
| | - Masahiro Inoue
- Tottori Prefectural Livestock Research Institute, Tottori 689-2503, Japan
| | - Masahiro Kaneda
- Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Shinya Watanabe
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan.,Western Region Agricultural Research Center, NARO, Shimane 694-0013, Japan
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13
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Tanaka M, Kakihara S, Hirabayashi K, Imai A, Toriyama Y, Iesato Y, Sakurai T, Kamiyoshi A, Ichikawa-Shindo Y, Kawate H, Tanaka M, Cui N, Wei Y, Zhao Y, Aruga K, Yamauchi A, Murata T, Shindo T. Adrenomedullin-Receptor Activity-Modifying Protein 2 System Ameliorates Subretinal Fibrosis by Suppressing Epithelial-Mesenchymal Transition in Age-Related Macular Degeneration. Am J Pathol 2021; 191:652-668. [PMID: 33385343 DOI: 10.1016/j.ajpath.2020.12.012] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 12/08/2020] [Accepted: 12/17/2020] [Indexed: 01/06/2023]
Abstract
Age-related macular degeneration (AMD) is a leading cause of visual impairment. Anti-vascular endothelial growth factor drugs used to treat AMD carry the risk of inducing subretinal fibrosis. We investigated the use of adrenomedullin (AM), a vasoactive peptide, and its receptor activity-modifying protein 2, RAMP2, which regulate vascular homeostasis and suppress fibrosis. The therapeutic potential of the AM-RAMP2 system was evaluated after laser-induced choroidal neovascularization (LI-CNV), a mouse model of AMD. Neovascular formation, subretinal fibrosis, and macrophage invasion were all enhanced in both AM and RAMP2 knockout mice compared with those in wild-type mice. These pathologic changes were suppressed by intravitreal injection of AM. Comprehensive gene expression analysis of the choroid after LI-CNV with or without AM administration revealed that fibrosis-related molecules, including Tgfb, Cxcr4, Ccn2, and Thbs1, were all down-regulated by AM. In retinal pigment epithelial cells, co-administration of transforming growth factor-β and tumor necrosis factor-α induced epithelial-mesenchymal transition, which was also prevented by AM. Finally, transforming growth factor-β and C-X-C chemokine receptor type 4 (CXCR4) inhibitors eliminated the difference in subretinal fibrosis between RAMP2 knockout and wild-type mice. These findings suggest the AM-RAMP2 system suppresses subretinal fibrosis in LI-CNV by suppressing epithelial-mesenchymal transition.
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Affiliation(s)
- Masaaki Tanaka
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Japan
| | - Shinji Kakihara
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Japan
| | | | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, Japan
| | - Yuichi Toriyama
- Department of Ophthalmology, Shinshu University School of Medicine, Japan
| | - Yasuhiro Iesato
- Department of Ophthalmology, Shinshu University School of Medicine, Japan
| | - Takayuki Sakurai
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan; Department of Life Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Akiko Kamiyoshi
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan; Department of Life Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan
| | - Yuka Ichikawa-Shindo
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Hisaka Kawate
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Megumu Tanaka
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Nanqi Cui
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yangxuan Wei
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Yunlu Zhao
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kohsuke Aruga
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Akihiro Yamauchi
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Japan
| | - Takayuki Shindo
- Department of Cardiovascular Research, Shinshu University School of Medicine, Matsumoto, Japan; Department of Life Innovation, Institute for Biomedical Sciences, Interdisciplinary Cluster for Cutting Edge Research, Shinshu University, Nagano, Japan.
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14
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Kakihara S, Hirano T, Imai A, Kurenuma T, Chiku Y, Murata T. Micropulse laser trabeculoplasty under maximal tolerable glaucoma eyedrops: treatment effectiveness and impact of surgical expertise. Int J Ophthalmol 2021; 14:388-392. [PMID: 33747814 DOI: 10.18240/ijo.2021.03.09] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/19/2020] [Accepted: 09/30/2020] [Indexed: 02/08/2023] Open
Abstract
AIM To evaluate the effectiveness of micropulse laser trabeculoplasty (MLT) for eyes with open angle glaucoma (OAG) under maximal tolerable glaucoma eyedrops and to assess the effect of expertise performing MLT on its clinical effectiveness. METHODS Medical records of 42 consecutive eyes of 34 patients diagnosed with OAG who underwent MLT were retrospectively reviewed. The effectiveness was determined using the Kaplan-Meier survival analysis. Failure was defined as an intraocular pressure (IOP) reduction of <20% from baseline, an IOP >21 mm Hg during two consecutive follow-up visits, or surgical intervention for OAG. To determine the impact of MLT surgical expertise on clinical effectiveness, the eyes were divided into two groups according to whether the procedure was conducted by an experienced specialist (defined as a glaucoma specialist who had conducted at least ten MLT procedures) or a less experienced glaucoma specialist. The difference in expertise was determined using a log-rank test. RESULTS MLT was conducted by three glaucoma specialists. The overall survival rates were 0.76, 0.48, and 0.44 at 1, 3, and 6mo, respectively. The survival rates for MLT performed by a less experienced glaucoma specialist were 0.62, 0.31, and 0.25 (n=21 eyes) at 1, 3, and 6mo, respectively, whereas the survival rates for MLT performed by an experienced glaucoma specialist were 0.90, 0.64, and 0.64 (n=21 eyes) at 1, 3, and 6mo, respectively. The log-rank test showed a significant difference in the survival curves of the two groups (P=0.0061). CONCLUSION The 6-month effectiveness of MLT for controlling IOP is relatively limited in eyes with OAG using maximal tolerable glaucoma eyedrops. However, its effectiveness may be improved if performed by a glaucoma specialist with sufficient MLT experience.
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Affiliation(s)
- Shinji Kakihara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Takao Hirano
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Taihei Kurenuma
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Yoshiaki Chiku
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano 390-8621, Japan
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15
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Kakihara S, Hirano T, Matsuda Y, Takano D, Imai A, Miyahara T, Murata T. Deposits on Retinal Surface Seen on OCT in Ocular Amyloidosis. Ophthalmol Retina 2021; 5:1005-1008. [PMID: 33422693 DOI: 10.1016/j.oret.2020.12.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 11/19/2020] [Revised: 12/26/2020] [Accepted: 12/30/2020] [Indexed: 02/06/2023]
Abstract
PURPOSE To investigate the tomographic features in patients with hereditary amyloidosis transthyretin (hATTR). DESIGN Retrospective case series and analysis of B-scan OCT images. PARTICIPANTS A total of 120 patients (240 eyes) diagnosed with hATTR. METHODS We performed a retrospective review of the treatment history and retrospective analysis of the OCT images of patients with hATTR. The parameters analyzed were the age at which the last OCT was performed, presence of ocular amyloidosis, history of pars plana vitrectomy (PPV), systemic treatment, and genetic mutations. Two independent evaluators evaluated the OCT images for characteristic needle-shaped pattern deposits on the retinal surface, and a third evaluator resolved any differences in their evaluations. MAIN OUTCOME MEASURES The frequency of characteristic needle-shaped deposits on the retinal surface seen on OCT. RESULTS The mean age at the time of the last OCT was 56.5 ± 14.9 years. Ninety-nine patients had gene encoding transthyretin (TTR) with the Val30Met mutation, and 21 patients had other mutations. Of 240 eyes, 128 had signs of ocular amyloidosis. Fifty of 73 eyes (68.5%) with a history of PPV for vitreous opacities exhibited characteristic deposits on OCT. Four of 31 eyes with vitreous opacity but without a history of PPV showed deposits on the retinal surface. No eyes without a history of vitreous opacities revealed the characteristic needle-shaped deposits. CONCLUSIONS Characteristic needle-shaped deposits on the retinal surface seen on OCT are significant because they are seen in most of the vitrectomized eyes presenting with ocular amyloidosis.
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Affiliation(s)
- Shinji Kakihara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan.
| | - Takao Hirano
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Yorishige Matsuda
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Daiki Takano
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Teruyoshi Miyahara
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Matsumoto, Nagano, Japan
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16
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Narita T, Hatakeyama S, Yamamoto H, Imai A, Yoneyama T, Hashimoto Y, Ohyama C. Preoperative frailty promotes sarcopenia after radical cystectomy in patients with muscle-invasive bladder cancer. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34135-5] [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: 10/23/2022] Open
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17
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Horiguchi H, Hatakeyama S, Hashimoto Y, Yoneyama T, Yamamoto H, Imai A, Ohyama C. Impact of neoadjuvant chemotherapy on Ki67 proliferation index and PDL1 expression in muscle-invasive bladder cancer. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32678-1] [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: 10/23/2022] Open
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18
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Narita T, Hatakeyama S, Yamamoto H, Imai A, Yoneyama T, Hashimoto Y, Ohyama C. Presence of transient hydronephrosis immediately after surgery has a limited influence on renal function 5 years after ileal neobladder construction. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)34134-3] [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: 10/23/2022] Open
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19
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Narita T, Hatakeyama S, Imai A, Tanaka T, Hamano I, Okamoto T, Yoneyama T, Yamamoto H, Yoneyama T, Hashimoto Y, Nakaji S, Suzuki T, Ohyama C. The impact of malnutrition on the risk of developing urolithiasis. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33387-5] [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: 10/23/2022] Open
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20
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Yamamoto H, Yoneyama T, Hamano I, Tobisawa Y, Imai A, Hatakeyama S, Yoneyama T, Hashimoto Y, Yamaguchi Y, Ohyama C. Hyaluronic acid degrading enzyme: TMEM2 increase in patients with interstitial cystitis and bladder pain syndrome. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32896-2] [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: 10/23/2022] Open
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21
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Ouchi H, Takamizawa T, Tsubota K, Tsujimoto A, Imai A, Barkmeier WW, Latta MA, Miyazaki M. The Effects of Aluminablasting on Bond Durability Between Universal Adhesives and Tooth Substrate. Oper Dent 2019; 45:196-208. [PMID: 31738692 DOI: 10.2341/18-170-l] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The aim of this study was to determine the effect of aluminablasting on the bond durability of universal adhesives and adherent surface characteristics. Adhese Universal (Ivoclar Vivadent), All-Bond Universal (Bisco), Bondmer Lightless (Tokuyama Dental), G-Premio Bond (GC), and Scotchbond Universal (3M ESPE) were used in self-etch mode. The prepared bovine enamel and dentin specimens were divided into two groups based on whether they received an aluminablasting prior to application of the universal adhesives. The resin composite bonded specimens were stored in distilled water at 37°C for 24 hours, following which the shear bond strength (SBS) of half of the specimens was measured (24-hour group). The other half was subjected to 30,000 thermal cycles between 5 and 55°C before SBS measurement (TC group). Surface roughness (Ra) and surface free energy (SFE) of the adherent surfaces were also measured, and scanning electron microscopy observation and scanning electron microscopy/energy-dispersive X-ray analysis were carried out. Most of the adhesives did not show any significant differences in enamel SBS values between the two pretreatment groups, regardless of the storage condition. However, the dentin SBS values were significantly lower in specimens that underwent aluminablasting compared with those that did not, irrespective of their storage conditions. Significantly higher Ra and SFE values were observed in the enamel and dentin of specimens that underwent aluminablasting. Although aluminablasting increased the Ra and SFE values of enamel and dentin, its effect on the SBS value was dependent on the tooth substrate. In addition to C, O, Na, Mg, P, and Ca, the element Al was detected in the enamel and dentin of samples that had undergone aluminablasting. These results suggest that although aluminablasting of the tooth surface is thought to be effective for modification of the adherent surface, it may not enhance enamel bond performance and may also adversely affect the dentin bond effectiveness of the universal adhesives.
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Ishii R, Takamizawa T, Tsujimoto A, Suzuki S, Imai A, Barkmeier WW, Latta MA, Miyazaki M. Effects of Finishing and Polishing Methods on the Surface Roughness and Surface Free Energy of Bulk-fill Resin Composites. Oper Dent 2019; 45:E91-E104. [PMID: 31738697 DOI: 10.2341/18-246-l] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The purpose of this study was to determine the influence of finishing and polishing methods on surface properties of bulk-fill resin composites through surface roughness (Ra) and surface free energy (SFE) measurements, and scanning electron microscopy (SEM) observations. Three bulk-fill resin composites, Tetric EvoCeram Bulk Fill (TB), Filtek Bulk Fill (FB), and Filtek Bulk Fill Flowable Restorative (FF), and two conventional resin composites, Clearfil AP-X (AP) and Estelite ∑ Quick (EQ) were used. Seventy cured specimens of each resin composite were prepared and divided into seven groups of 10 specimens. Ra, SFE measurements, and SEM observations were conducted after finishing and polishing procedures. Three groups of specimens were finished with a fine grit diamond bur (FDB), and three with a tungsten carbide bur (CBB). After finishing, one group from each type of finishing was polished with aluminum oxide flexible disks (SSD) and one group from each type of finishing was polished with diamond particles embedded in a silicone point (CMP). A baseline group of samples that were neither finished nor polished after removing the translucent strips from the surface was examined. Although the baseline group showed significantly lower Ra values than the other groups, most resin composites showed lower Ra values with CBB+SSD than with the other finishing and polishing groups. Among the tested resin composites, EQ showed significantly lower Ra values than the other resin composites, regardless of the finishing and polishing methods. On the other hand, AP showed significantly higher Ra values than the other resin composites in all finishing and polishing groups, apart from FB with FDB. For the finished specimens, most resin composites showed higher SFE values with CBB than with FDB. For the polished specimens, all the tested resin composites with CMP showed lower γS values than those with SSD, regardless of the finishing method. The baseline groups of TB and FB showed significantly lower SFE values than the other finished and polished groups. In the SEM observations, all the examined resin composites showed rougher surfaces after finishing with FDB than with CBB. However, when comparing the different polishing methods (CMP and SSD), surface smoothness appeared to be material dependent.
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Imai A, Takizawa T, Sato K, Inoue T, Nishida Y, Yagi H, Arakawa H. [SWITCHING BIOLOGICS LED TO GOOD CONTROL IN SEVERE CHILDHOOD ASTHMA: A CASE REPORT]. Arerugi 2019; 68:869-873. [PMID: 31406083 DOI: 10.15036/arerugi.68.869] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The two biologic therapies, anti-IgE (omalizumab) and anti-IL-5 antibodies (mepolizumab), are used in the treatment of severe pediatric asthma. We present here a case study of a 13-year-old girl with severe asthma who switched from omalizumab to mepolizumab therapy and achieved good control over her asthma. The patient was diagnosed with asthma at one year of age and presented with poor disease control, even while taking high doses of inhaled corticosteroids (ICS). As such, she was considered to have severe persistent asthma. At 10 years old, she began omalizumab therapy which improved asthma control. However, after two years of this therapy, she manifested frequent acute exacerbations. At 12 years old, she switched to mepolizumab and has since maintained good control of asthma. Additionally, total serum IgE levels and peripheral eosinophil counts decreased. As the underlying mechanisms of omalizumab and mepolizumab therapy are distinct, it is recommended to use either one if the other proves ineffective.
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Affiliation(s)
- Akira Imai
- Gunma University, Graduate School of Medicine, Department of Pediatrics.,National Hospital Organization, Takasaki General Medical Center, Pediatrics
| | - Takumi Takizawa
- Gunma University, Graduate School of Medicine, Department of Pediatrics
| | - Koichiro Sato
- Gunma University, Graduate School of Medicine, Department of Pediatrics
| | - Takaharu Inoue
- Gunma University, Graduate School of Medicine, Department of Pediatrics
| | - Yutaka Nishida
- Gunma University, Graduate School of Medicine, Department of Pediatrics
| | - Hisako Yagi
- Gunma University, Graduate School of Medicine, Department of Pediatrics
| | - Hirokazu Arakawa
- Gunma University, Graduate School of Medicine, Department of Pediatrics
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Takeda K, Kobayashi E, Nishino K, Imai A, Adachi H, Hoshino Y, Iwao K, Akagi S, Kaneda M, Watanabe S. Age-related changes in DNA methylation levels at CpG sites in bull spermatozoa and in vitro fertilization-derived blastocyst-stage embryos revealed by combined bisulfite restriction analysis. J Reprod Dev 2019; 65:305-312. [PMID: 31061296 PMCID: PMC6708852 DOI: 10.1262/jrd.2018-146] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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] [Indexed: 01/01/2023] Open
Abstract
Age-associated methylation changes in genomic DNA have been recently reported in spermatozoa, and these changes can contribute to decline in fertility. In a previous study, we analyzed the
genome-wide DNA methylation profiles of bull spermatozoa using a human DNA methylation microarray and identified one CpG site (CpG-1) that potentially reflects age-related methylation
changes. In the present study, cryopreserved semen samples from a Japanese Black bull were collected at five different ages, which were referred to as JD1-5: 14, 19, 28, 54, and 162 months,
respectively, and were used for genome-wide DNA methylation analysis and in vitro fertilization (IVF). Distinct age-related changes in methylation profiles were observed,
and 77 CpG sites were found to be differently methylated between young and adult samples (JD1-2 vs. JD4-5). Using combined bisulfite restriction analysis (COBRA), nine CpG
sites (including CpG-1) were confirmed to exhibit significant differences in their age-dependent methylation levels. Eight CpG sites showed an age-dependent increase in their methylation
levels, whereas only one site showed age-dependent hypomethylation; in particular, these changes in methylation levels occurred rapidly at a young age. COBRA revealed low methylation levels
in some CpG regions in the majority of the IVF blastocyst-stage embryos derived from spermatozoa at JD2-5. Interestingly, bulls with different ages did not show differences in their
methylation levels. In conclusion, our findings indicated that methylation levels at nine CpG sites in spermatozoa changed with increasing age and that some CpG regions were demethylated
after fertilization. Further studies are required to determine whether age-dependent different methylation levels in bull spermatozoa can affect fertility.
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Affiliation(s)
- Kumiko Takeda
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Eiji Kobayashi
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Kagetomo Nishino
- Beef Cattle Institute, Ibaraki Prefectural Livestock Research Center, Ibaraki 319-2224, Japan
| | - Akira Imai
- Hiroshima Prefectural Livestock Technology Research Center, Hiroshima 739-0151, Japan
| | - Hiromichi Adachi
- Hida Beef Cattle Research, Gifu Prefectural Livestock Research Institute, Gifu 506-0101, Japan
| | - Yoichiro Hoshino
- Hida Beef Cattle Research, Gifu Prefectural Livestock Research Institute, Gifu 506-0101, Japan.,Kyoto University, Kyoto 622-0203, Japan
| | - Ken Iwao
- Tottori Prefectural Livestock Research Institute, Tottori 689-2503, Japan
| | - Satoshi Akagi
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
| | - Masahiro Kaneda
- Tokyo University of Agriculture and Technology, Tokyo 183-8509, Japan
| | - Shinya Watanabe
- Institute of Livestock and Grassland Science, NARO, Ibaraki 305-0901, Japan
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25
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Niiya A, Murakami K, Kobayashi R, Toyofuku K, Nishimura E, Kato M, Ozawa Y, Shinjo H, Miyaura K, Morota M, Serizawa T, Ito Y, Imai A, Kagami Y. PO-0751 Neutrophil lymphocyte ratio and Platelet lymphocyte ratio as a prognostic factor in brain metastases. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)31171-5] [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]
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Miyaura K, Fujii T, Kubo T, Shinjoh H, Kato M, Toyofuku K, Niiya A, Kobayashi R, Ozawa Y, Murakami K, Morota M, Ito Y, Imai A, Kagami Y. EP-2118 Effects of interfraction uncertainty with Strut Adjusted Volume Implant applicator. Radiother Oncol 2019. [DOI: 10.1016/s0167-8140(19)32538-1] [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: 10/26/2022]
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Buxbaum JN, Brannagan T, Buades-Reinés J, Cisneros E, Conceicao I, Kyriakides T, Merlini G, Obici L, Plante-Bordeneuve V, Rousseau A, Sekijima Y, Imai A, Waddington Cruz M, Yamada M. Transthyretin deposition in the eye in the era of effective therapy for hereditary ATTRV30M amyloidosis. Amyloid 2019; 26:10-14. [PMID: 30675806 DOI: 10.1080/13506129.2018.1554563] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [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: 10/27/2022]
Abstract
BACKGROUND Ocular abnormalities have been known to occur in hereditary amyloidotic polyneuropathy since the 1950s. While vitreous opacities and scalloped pupils were described early it has become evident that every component of the eye from the conjunctiva to the retinal vasculature can be involved. Reports from the major centres in Japan, Portugal and Sweden, which primarily treat patients with ATTRV30M, have indicated that with the increased longevity seen in patients treated with liver transplantation the frequency of the more severe eye findings, notably vitreous opacities and subsequent glaucoma, are being detected more frequently. METHODS In an attempt to confirm that the experience was similar in a broader range of locales we performed a survey of ten treatment centres in eight countries to determine the frequency of severe ocular abnormalities (vitreous opacities and glaucoma) in 804 patients with V30M disease and whether there was any relationship to treatment with liver transplantation or the transthyretin stabilizer tafamidis. RESULTS The data indicate that the frequency of these abnormalities increases with increasing duration of disease. In patients broadly matched for duration of disease the frequency was higher in subjects who had undergone liver transplantation than in those who were untreated. CONCLUSIONS Retrospective surveys are subject to a number of potential biases. In this case, the major potential confounders were defining the time of disease onset and physician bias in choice of therapy, particularly regarding the choice of patients and the time in their course when they should undergo liver transplantation, and when and whether they should receive tafamidis. Nonetheless it appears that the incidence of severe ocular abnormalities in V30M subjects from centres around the world is similar to those found in centres in the areas endemic for this variant protein. The incidence increased with duration of disease regardless of therapy with the highest frequencies seen in patients more than ten years after diagnosis who had undergone liver transplantation.
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Affiliation(s)
| | - Thomas Brannagan
- b Department of Neurology , NewYork-Presbyterian Hospital , New York , NY , USA
| | - Juan Buades-Reinés
- c Department of Internal Medicine , Son Llatzer Hospital , Palma de Mallorca , Spain
| | - Eugenia Cisneros
- d Department of Cardiology , Son Llatzer Hospital , Palma de Mallorca , Spain
| | - Isabel Conceicao
- e Department of Neurosciences , Centro Hospitalar Lisboa Norte-Hospital Santa Maria , Lisbon , Portugal.,f IIM, Faculdade de Medicina de Lisboa , Lisbon , Portugal
| | | | - Giampaolo Merlini
- h Department of Molecular Medicine , University of Pavia, Policlinico San Matteo , Pavia , Italy
| | - Laura Obici
- i Fondazione IRCCS Policlinico San Matteo, Amyloid Research and Treatment Center , Biotechnology Research Laboratories , Pavia , Italy
| | | | - Antoine Rousseau
- k Department of Ophthalmology, French Reference Center for familial transthyretin amyloidosis (NNERF), French Reference Network for rare Ophthalmologic diseases (OPHTARA) , Bicêtre Hospital, Assistance Publique - Hôpitaux de Paris, DHU Vision & Handicaps, Paris-Sud , Le Kremlin-Bicêtre , France
| | - Yoshiki Sekijima
- l Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine , Matsumoto , Japan
| | - Akira Imai
- m Department of Opthalmology , Shinshu University School of Medicine , Matsumoto , Japan
| | - Márcia Waddington Cruz
- n Department of Neurology, Federal University of Rio de Janeiro, Rua Professor Rodolpho Paulo Rocco , Rio de Janeiro , Brazil
| | - Masahito Yamada
- o Department of Neurology & Neurobiology of Aging , Kanazawa University Graduate School of Medical Science , Kanazawa , Japan
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Hirabayashi K, Tanaka M, Imai A, Toriyama Y, Iesato Y, Sakurai T, Kamiyoshi A, Ichikawa-Shindo Y, Kawate H, Tanaka M, Dai K, Cui N, Wei Y, Nakamura K, Iida S, Matsui S, Yamauchi A, Murata T, Shindo T. Development of a Novel Model of Central Retinal Vascular Occlusion and the Therapeutic Potential of the Adrenomedullin-Receptor Activity-Modifying Protein 2 System. Am J Pathol 2019; 189:449-466. [PMID: 30658846 DOI: 10.1016/j.ajpath.2018.10.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 10/03/2018] [Accepted: 10/23/2018] [Indexed: 12/20/2022]
Abstract
Central retinal vein occlusion (CRVO) is an intractable disease that causes visual acuity loss with retinal ischemia, hemorrhage, and edema. In this study, we developed an experimental CRVO model in mice and evaluated the therapeutic potential of the pleiotropic peptide adrenomedullin (ADM) and its receptor activity-modifying protein 2 (RAMP2). The CRVO model, which had phenotypes resembling those seen in the clinic, was produced by combining i.p. injection of Rose bengal, a photoactivator dye enhancing thrombus formation, with laser photocoagulation. Retinal vascular area, analyzed using fluorescein angiography and fluorescein isothiocyanate-perfused retinal flat mounts, was decreased after induction of CRVO but gradually recovered from day 1 to 7. Measurements of retinal thickness using optical coherence tomography and histology revealed prominent edema early after CRVO, followed by gradual atrophy. Reperfusion after CRVO was diminished in Adm and Ramp2 knockout (KO) mice but was increased by exogenous ADM administration. CRVO also increased expression of a coagulation factor, oxidative stress markers, and a leukocyte adhesion molecule in both wild-type and Adm KO mice, and the effect was more pronounced in Adm KO mice. Using retinal capillary endothelial cells, ADM was found to directly suppress retinal endothelial injury. The retinoprotective effects of the Adm-Ramp2 system make it a novel therapeutic target for the treatment of CRVO.
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Affiliation(s)
- Kazutaka Hirabayashi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Masaaki Tanaka
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Akira Imai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Yuichi Toriyama
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Yasuhiro Iesato
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Takayuki Sakurai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Akiko Kamiyoshi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Yuka Ichikawa-Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Hisaka Kawate
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Megumu Tanaka
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Kun Dai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Nanqi Cui
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Yangxuan Wei
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Keisei Nakamura
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Shiho Iida
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Shuhei Matsui
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Anesthesiology, Shinshu University School of Medicine, Nagano, Japan
| | | | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Takayuki Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan.
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Hirano T, Imai A, Kasamatsu H, Kakihara S, Toriyama Y, Murata T. Assessment of diabetic retinopathy using two ultra-wide-field fundus imaging systems, the Clarus® and Optos™ systems. BMC Ophthalmol 2018; 18:332. [PMID: 30572870 PMCID: PMC6302295 DOI: 10.1186/s12886-018-1011-z] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [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: 04/28/2018] [Accepted: 12/13/2018] [Indexed: 11/17/2022] Open
Abstract
Background The ability to image wide fundus fields and to conduct swift, non-invasive examinations is increasingly important with the escalation in patients with diabetic retinopathy (DR). Methods Fifty eyes of 28 consecutive patients with DR were examined in this prospective observational study. A total of 46 eyes, 25 right and 21 left eyes, of 27 patients (male, 19; female, 8) were ultimately included in the analysis. All patients underwent comprehensive ophthalmological examination. A single image each was obtained using two ultra-wide-field (UWF) imaging systems: Optos® (Optos Carfornia®, Optos PLC, Dunfermline, United Kingdom) and Clarus™ (CLARUS 500™, Carl Zeiss Meditec Inc., Californea, USA), without mydriasis. The total retinal area captured and the obscured retinal area were compared between the two systems using nonparametric Wilcoxon matched-pairs signed-rank analysis. Early Treatment of Diabetic Retinopathy Study (ETDRS) and International Clinical DR severity were analyzed by κ statistics. Results The Optos® allowed capture of larger areas of the fundus than the Clarus™ (465 ± 117 vs. 243 ± 39 disc areas, P < 0.0001). In 85% (39/46) of Optos® images and 7% (3/46) of Clarus™ images, a slightly obscured area was observed within the ETDRS-7 field area. κ values for ETDRS DR severity and International Clinical DR severity between the Optos® and Clarus™ images were 0.88 and 0.79, respectively. Severity was higher according to Clarus™ images in two eyes in which the ETDRS DR severity grading differed between the systems. Severity was higher in four Clarus™ images and in a single Optos® image in five eyes in which the International Clinical DR severity grading differed between the systems. Conclusion The Optos® and Clarus™ UWF retinal imaging systems were useful for examining eyes with DR, using single images obtained without mydriasis. The systems were both generally consistent in assessing DR severity, with some partial discrepancies. It is important to understand the characteristics of each respective UWF retinal imaging system when using them to assess DR.
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Affiliation(s)
- Takao Hirano
- Department of Ophthalmology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, Nagano, 390-8621, Japan.
| | - Akira Imai
- Department of Ophthalmology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, Nagano, 390-8621, Japan
| | - Hirotsugu Kasamatsu
- Department of Ophthalmology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, Nagano, 390-8621, Japan
| | - Shinji Kakihara
- Department of Ophthalmology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, Nagano, 390-8621, Japan
| | - Yuichi Toriyama
- Department of Ophthalmology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, Nagano, 390-8621, Japan
| | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Asahi 3-1-1, Matsumoto, Nagano, 390-8621, Japan
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Hatakeyama S, Yamamoto H, Imai A, Yoneyama T, Hashimoto Y, Koie T, Ohyama C. The relationship between preoperative stage IIIB chronic kidney disease and post-surgical oncological outcomes in patients with urothelial carcinoma. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy435.004] [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: 11/13/2022] Open
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Imai A, Yamamoto H, Hatakeyama S, Yoneyama T, Hashimoto Y, Ohyama C. Comparison between robot-assisted radical prostatectomy and minimum incision endoscopic radical prostatectomy for high-risk prostate cancer following neoadjuvant therapy: A propensity score-matched analysis. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy434.003] [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: 11/14/2022] Open
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Hatakeyama S, Kodama H, Konishi S, Okita K, Yamamoto H, Imai A, Yoneyama T, Hashimoto Y, Koie T, Ohyama C. Does neoadjuvant chemotherapy promote chemoresistance after recurrence in patients with muscle-invasive bladder cancer? Ann Oncol 2018. [DOI: 10.1093/annonc/mdy435.009] [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: 11/12/2022] Open
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Hashimoto Y, Imai A, Yamamoto H, Hatakeyama S, Yoneyama T, Ohyama C. Aldo-keto-reductase 1C3 expression in prostate cancer. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy434.014] [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: 11/14/2022] Open
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Kohri M, Yanagimoto K, Kohaku K, Shiomoto S, Kobayashi M, Imai A, Shiba F, Taniguchi T, Kishikawa K. Magnetically Responsive Polymer Network Constructed by Poly(acrylic acid) and Holmium. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b01550] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
| | | | | | - Shohei Shiomoto
- Department of Applied Chemistry, Graduate School of Engineering, and School of Advanced Engineering, Kogakuin University, 2665-1 Nakano-cho, Hachioji, Tokyo 192-0015, Japan
| | | | - Akira Imai
- Technical Services Department, Quantum Design Japan, Inc., Nishiikebukuro Fujita Bldg. 1F,
1-11-16 Takamatsu, Toshima-ku, Tokyo 171-0042, Japan
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Fujita N, Hatakeyama S, Yamamoto H, Imai A, Yoneyama T, Hashimoto Y, Koie T, Ohyama C. 295 The implication of aortic calcification on severe erectile dysfunction in patients with end stage renal disease. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.260] [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: 11/28/2022]
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Fujita N, Hatakeyama S, Yamamoto H, Imai A, Yoneyama T, Hashimoto Y, Koie T, Ohyama C. 414 The implication of aortic calcification on late onset hypogonadism in patients with end stage renal disease. J Sex Med 2018. [DOI: 10.1016/j.jsxm.2018.04.320] [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: 10/28/2022]
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Kido K, Hatakeyama S, Hamano I, Yamamoto H, Imai A, Yoneyama T, Hashimoto Y, Koie T, Fujita T, Murakami R, Tomita H, Suzuki T, Narumi S, Ohyama C. Partial Cystectomy of Paraganglioma of the Urinary Bladder Before Living Kidney Transplantation: Case Report. Transplant Proc 2018; 50:898-901. [PMID: 29661460 DOI: 10.1016/j.transproceed.2018.01.015] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 01/29/2018] [Indexed: 02/08/2023]
Abstract
BACKGROUND Paraganglioma (extra-adrenal pheochromocytoma) of the bladder is a very rare disease, accounting for 0.06% of all bladder tumors. Optimal management of bladder paraganglioma before kidney transplantation is unknown. We report a case of partial cystectomy for urinary bladder paraganglioma before living kidney transplantation. CASE PRESENTATION A 59-year-old man with a 27-year history of hemodialysis was referred to our department for further examination of a bladder tumor detected during pre-transplantation testing. Cystoscopy revealed a submucosal tumor on the right side of the bladder. The patient experienced a hypertensive crisis during transurethral resection of the bladder tumor. Endocrinologic and pathologic examinations confirmed the diagnosis of paraganglioma in the urinary bladder. A partial cystectomy was performed before kidney transplantation. Nine months after partial cystectomy, the patient underwent AB0-incompatible living kidney transplantation from his spouse. No disease recurrence or graft rejection was observed 12 months after the transplantation. CONCLUSIONS To our knowledge, this is the 1st report on the management of paraganglioma in the urinary bladder before living kidney transplantation. Kidney transplantation after partial cystectomy is an option that may be considered in patients with paraganglioma of the urinary bladder, with careful observations of bladder function and vesicoureteral reflux to the grafts.
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Affiliation(s)
- K Kido
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - S Hatakeyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
| | - I Hamano
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - H Yamamoto
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - A Imai
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Yoneyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Y Hashimoto
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Koie
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Fujita
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - R Murakami
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - H Tomita
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Suzuki
- Department of Urology, Oyokyo Kidney Research Institute, Hirosaki, Japan
| | - S Narumi
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - C Ohyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan; Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Kakihara S, Hirano T, Iesato Y, Imai A, Toriyama Y, Murata T. Extended field imaging using swept-source optical coherence tomography angiography in retinal vein occlusion. Jpn J Ophthalmol 2018; 62:274-279. [DOI: 10.1007/s10384-018-0590-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 03/04/2018] [Indexed: 11/28/2022]
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Hamano I, Hatakeyama S, Yamamoto H, Fujita T, Murakami R, Shimada M, Imai A, Yoneyama T, Yoneyama T, Hashimoto Y, Koie T, Narumi S, Saitoh H, Suzuki T, Tomita H, Ohyama C. Condyloma Acuminata of the Urethra in a Male Renal Transplant Recipient: A Case Report. Transplant Proc 2018; 50:2553-2557. [PMID: 30316397 DOI: 10.1016/j.transproceed.2018.02.182] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 02/19/2018] [Indexed: 12/23/2022]
Abstract
BACKGROUND Condyloma acuminatum (CA) is a common sexually transmitted disease associated with human papilloma virus (HPV). CA occurring in the urethra is rare and has not been reported in male renal transplant recipients. In addition, despite immunosuppressive conditions and increased risk of HPV-related malignant neoplasms in transplant recipients, HPV testing in male transplant recipients has been uncommon. Here we report a case of urethral CA in a male deceased donor renal transplantation recipient and discuss the importance of HPV testing in male transplant recipients. CASE PRESENTATION A 33-year-old male deceased donor renal transplant recipient presented with miction pain 5 years after the transplantation. He reported repeated urinary tract infections with no sexual contact since the renal transplantation. Multiple papillary tumors in his penile urethra were detected by cystoscopy, and a biopsy sample was pathologically diagnosed with CA. Transurethral tumor resection was performed, and the tumors were completely resected. Additional HPV risk type screening with a urethral smear sample showed the prevalence of low-risk HPV. Although tacrolimus was switched to everolimus and imiquimod cream was administered, the tumors recurred 6 months after the resection, and a second resection was performed. No further recurrence has been observed for 1 year to date. CONCLUSION As the urethral CA was possibly related to immunosuppressive conditions and a risk for HPV-related malignant neoplasm, the case required careful diagnosis, including HPV risk type. The methodology of sampling for HPV testing in men has not been established. This case suggests the necessity for further discussion about HPV testing in male transplant recipients.
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Affiliation(s)
- I Hamano
- Department of Urology, Oyokyo Kidney Research Institute, Hirosaki, Japan
| | - S Hatakeyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan.
| | - H Yamamoto
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Fujita
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - R Murakami
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - M Shimada
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - A Imai
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Yoneyama
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Yoneyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Y Hashimoto
- Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - T Koie
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - S Narumi
- Department of Transplant Surgery, Nagoya Daini Red Cross Hospital, Nagoya, Japan
| | - H Saitoh
- Department of Urology, Oyokyo Kidney Research Institute, Hirosaki, Japan
| | - T Suzuki
- Department of Urology, Oyokyo Kidney Research Institute, Hirosaki, Japan
| | - H Tomita
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - C Ohyama
- Department of Urology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan; Department of Advanced Transplant and Regenerative Medicine, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Tanaka T, Yoneyama T, Noro D, Imanishi K, Yuta K, Tobisawa Y, Mori K, Yamamoto H, Imai A, Hatakeyama S, Hashimoto Y, Koie T, Tanaka M, Nishimura S, Kurauchi S, Takahashi I, Ohyama C. Aberrant N-glycosylation profile of serum immunoglobulins is a diagnostic biomarker of urothelial carcinomas. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1569-9056(18)31832-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Shibasaki S, Takamizawa T, Nojiri K, Imai A, Tsujimoto A, Endo H, Suzuki S, Suda S, Barkmeier WW, Latta MA, Miyazaki M. Polymerization Behavior and Mechanical Properties of High-Viscosity Bulk Fill and Low Shrinkage Resin Composites. Oper Dent 2017; 42:E177-E187. [DOI: 10.2341/16-385-l] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
SUMMARY
The present study determined the mechanical properties and volumetric polymerization shrinkage of different categories of resin composite. Three high viscosity bulk fill resin composites were tested: Tetric EvoCeram Bulk Fill (TB, Ivoclar Vivadent), Filtek Bulk Fill posterior restorative (FB, 3M ESPE), and Sonic Fill (SF, Kerr Corp). Two low-shrinkage resin composites, Kalore (KL, GC Corp) and Filtek LS Posterior (LS, 3M ESPE), were used. Three conventional resin composites, Herculite Ultra (HU, Kerr Corp), Estelite ∑ Quick (EQ, Tokuyama Dental), and Filtek Supreme Ultra (SU, 3M ESPE), were used as comparison materials. Following ISO Specification 4049, six specimens for each resin composite were used to determine flexural strength, elastic modulus, and resilience. Volumetric polymerization shrinkage was determined using a water-filled dilatometer. Data were evaluated using analysis of variance followed by Tukey's honestly significant difference test (α=0.05). The flexural strength of the resin composites ranged from 115.4 to 148.1 MPa, the elastic modulus ranged from 5.6 to 13.4 GPa, and the resilience ranged from 0.70 to 1.0 MJ/m3. There were significant differences in flexural properties between the materials but no clear outliers. Volumetric changes as a function of time over a duration of 180 seconds depended on the type of resin composite. However, for all the resin composites, apart from LS, volumetric shrinkage began soon after the start of light irradiation, and a rapid decrease in volume during light irradiation followed by a slower decrease was observed. The low shrinkage resin composites KL and LS showed significantly lower volumetric shrinkage than the other tested materials at the measuring point of 180 seconds. In contrast, the three bulk fill resin composites showed higher volumetric change than the other resin composites. The findings from this study provide clinicians with valuable information regarding the mechanical properties and polymerization kinetics of these categories of current resin composite.
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Affiliation(s)
- S Shibasaki
- Sho Shibasaki, DDS, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - T Takamizawa
- Toshiki Takamizawa, DDS, PhD, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - K Nojiri
- Kie Nojiri, DDS, PhD, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - A Imai
- Arisa Imai, DDS, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - A Tsujimoto
- Akimasa Tsujimoto, DDS, PhD, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - H Endo
- Hajime Endo, DDS, PhD, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - S Suzuki
- Soshi Suzuki, DDS, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - S Suda
- Syunichi Suda, DDS, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
| | - WW Barkmeier
- Wayne W Barkmeier, EBM, DDS, MS, General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA
| | - MA Latta
- Mark A Latta, DMD, MS, General Dentistry, Creighton University School of Dentistry, Omaha, NE, USA
| | - M Miyazaki
- Masashi Miyazaki, DDS, PhD, Operative Dentistry, Nihon University School of Dentistry, Tokyo, Japan
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Inamasu J, Nakatsukasa M, Tomiyasu K, Mayanagi K, Nishimoto M, Oshima T, Yoshii M, Miyatake S, Imai A. Stroke while driving: Frequency and association with automobile accidents. Int J Stroke 2017; 13:301-307. [PMID: 28857693 DOI: 10.1177/1747493017728398] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [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]
Abstract
Background Cardiovascular events while driving have occasionally been reported. In contrast, there have been few studies on stroke while driving. Aim The objectives of this study were to (1) report the frequency of stroke while driving and (2) evaluate its association with automobile accidents. Methods Clinical data prospectively acquired between January 2011 and December 2016 on 2145 stroke patients (1301 with ischemic stroke, 585 with intracerebral hemorrhage, and 259 with subarachnoid hemorrhage) were reviewed to identify patients who sustained a stroke while driving. The ratio of driving to performing other activities was evaluated for each stroke type. Furthermore, the drivers' response to stroke was reviewed to understand how automobile accidents occurred. Results Among the 2145 patients, 85 (63 ischemic stroke, 20 intracerebral hemorrhage, and 2 subarachnoid hemorrhage) sustained a stroke while driving. The ratio of driving to performing other activities was significantly higher in ischemic stroke (4.8%) than in intracerebral hemorrhage (3.4%) or subarachnoid hemorrhage (0.8%). A majority of drivers either continued driving or pulled over to the roadside after suffering a stroke. However, 14 (16%) patients were involved in automobile accidents. In most patients, an altered mental status due to severe stroke was the presumed cause of the accident. Conclusion Stroke occurred while driving in 4.0% of all strokes and accidents occurred in 16% of these instances.
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Affiliation(s)
- Joji Inamasu
- 1 Department of Neurosurgery, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
| | - Masashi Nakatsukasa
- 1 Department of Neurosurgery, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
| | - Kazuhiro Tomiyasu
- 2 Department of Neurology, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
| | - Keita Mayanagi
- 1 Department of Neurosurgery, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
| | - Masaaki Nishimoto
- 1 Department of Neurosurgery, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
| | - Takeo Oshima
- 2 Department of Neurology, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
| | - Masami Yoshii
- 2 Department of Neurology, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
| | - Satoru Miyatake
- 3 Department of Emergency Medicine, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Akira Imai
- 2 Department of Neurology, Saiseikai Utsunomiya Hospital Stroke Center, Utsunomiya, Japan
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43
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Liu T, Kamiyoshi A, Sakurai T, Ichikawa-Shindo Y, Kawate H, Yang L, Tanaka M, Xian X, Imai A, Zhai L, Hirabayashi K, Dai K, Tanimura K, Liu T, Cui N, Igarashi K, Yamauchi A, Shindo T. Endogenous Calcitonin Gene-Related Peptide Regulates Lipid Metabolism and Energy Homeostasis in Male Mice. Endocrinology 2017; 158:1194-1206. [PMID: 28324021 DOI: 10.1210/en.2016-1510] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [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] [Received: 07/21/2016] [Accepted: 01/12/2017] [Indexed: 11/19/2022]
Abstract
Calcitonin gene-related peptide (CGRP) is a bioactive peptide produced by alternative splicing of the primary transcript of the calcitonin/CGRP gene. CGRP is largely distributed in the cardiovascular and nervous systems, where it acts as a regulatory factor. CGRP is also expressed in organs and tissues involved in metabolic regulation, including white adipose tissue (WAT), where its function is largely unknown. In this study, we examined the effects of endogenous CGRP on metabolic function. When we administered a high-fat diet to CGRP-specific knockout (CGRP-/-) and wild-type (WT) mice for 10 weeks, we observed that food intake did not differ between the two groups, but body weight and visceral fat weight were significantly lower in CGRP-/- mice. Fatty liver changes were less severe in CGRP-/- mice, which also showed lower serum insulin and leptin levels. Glucose tolerance and insulin sensitivity were better in CGRP-/- than WT mice, and expired gas analysis revealed greater oxygen consumption by CGRP-/- mice. Adipocyte hypertrophy was suppressed in CGRP-/- mice, while expression of β-3-adrenergic receptor, hormone-sensitive lipase and adiponectin was enhanced. Isoproterenol-induced glycerol release from WAT was higher in CGRP-/- than WT mice, and CGRP-/- mice showed elevated sympathetic nervous activity. β-receptor-blockade canceled the beneficial effects of CGRP deletion on obesity. These results suggest that, in addition to its actions in the cardiovascular system, endogenous CGRP is a key regulator of metabolism and energy homeostasis in vivo.
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Affiliation(s)
- Tian Liu
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Akiko Kamiyoshi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Takayuki Sakurai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Yuka Ichikawa-Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Hisaka Kawate
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Lei Yang
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Megumu Tanaka
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Xian Xian
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Akira Imai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Liuyu Zhai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Kazutaka Hirabayashi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Kun Dai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Keiya Tanimura
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Teng Liu
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Nanqi Cui
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | | | | | - Takayuki Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
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44
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Xian X, Sakurai T, Kamiyoshi A, Ichikawa-Shindo Y, Tanaka M, Koyama T, Kawate H, Yang L, Liu T, Imai A, Zhai L, Hirabayashi K, Dai K, Tanimura K, Liu T, Cui N, Igarashi K, Yamauchi A, Shindo T. Vasoprotective Activities of the Adrenomedullin-RAMP2 System in Endothelial Cells. Endocrinology 2017; 158:1359-1372. [PMID: 28324104 DOI: 10.1210/en.2016-1531] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [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] [Received: 07/27/2016] [Accepted: 01/24/2017] [Indexed: 12/31/2022]
Abstract
Neointimal hyperplasia is the primary lesion underlying atherosclerosis and restenosis after coronary intervention. We previously described the essential angiogenic function of the adrenomedullin (AM)-receptor activity-modifying protein (RAMP) 2 system. In the present study, we assessed the vasoprotective actions of the endogenous AM-RAMP2 system using a wire-induced vascular injury model. We found that neointima formation and vascular smooth muscle cell proliferation were enhanced in RAMP2+/- male mice. The injured vessels from RAMP2+/- mice showed greater macrophage infiltration, inflammatory cytokine expression, and oxidative stress than vessels from wild-type mice and less re-endothelialization. After endothelial cell-specific RAMP2 deletion in drug-inducible endothelial cell-specific RAMP2-/- (DI-E-RAMP2-/-) male mice, we observed markedly greater neointima formation than in control mice. In addition, neointima formation after vessel injury was enhanced in mice receiving bone marrow transplants from RAMP2+/- or DI-E-RAMP2-/- mice, indicating that bone marrow-derived cells contributed to the enhanced neointima formation. Finally, we found that the AM-RAMP2 system augmented proliferation and migration of endothelial progenitor cells. These results demonstrate that the AM-RAMP2 system exerts crucial vasoprotective effects after vascular injury and could be a therapeutic target for the treatment of vascular diseases.
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Affiliation(s)
- Xian Xian
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
- Department of Pathogenic Biology, Hebei Medical University, Shijiazhuang 050017, China
| | - Takayuki Sakurai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Akiko Kamiyoshi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Yuka Ichikawa-Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Megumu Tanaka
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Teruhide Koyama
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Hisaka Kawate
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Lei Yang
- Department of Epidemiology and Statistics, School of Public Health, Hebei Medical University, Shijiazhuang 0050017, China
| | - Tian Liu
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Akira Imai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Liuyu Zhai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Kazutaka Hirabayashi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Kun Dai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Keiya Tanimura
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Teng Liu
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | - Nanqi Cui
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
| | | | | | - Takayuki Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano 390-8621, Japan
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45
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Inamasu J, Nakatsukasa M, Oshima T, Tomiyasu K, Mayanagi K, Imai A. Clinical Characteristics of Stroke Occurring while Bathing. J Stroke Cerebrovasc Dis 2017; 26:1462-1466. [PMID: 28341200 DOI: 10.1016/j.jstrokecerebrovasdis.2017.03.013] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 02/28/2017] [Accepted: 03/08/2017] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Stroke can occur during any human activity. Although cardiac arrests or drowning accidents while bathing have been studied extensively, there are few studies focusing on stroke occurring while bathing. The objectives of this study were to evaluate the clinical characteristics of stroke occurring while bathing and the association between stroke and drowning accidents. METHODS Clinical data prospectively acquired between January 2011 and December 2015 on 1939 patients with stroke (1224 cerebral infarctions [CIs], 505 intracerebral hemorrhages [ICHs], and 210 subarachnoid hemorrhages [SAHs]) were reviewed to identify patients who sustained a stroke while bathing. The ratio of bathing-related strokes to strokes occurring during other activities was evaluated. Moreover, the demographics of these 2 groups were compared in each stroke type. RESULTS Among the 1939 patients, 78 (CI, 32; ICH, 28; and SAH, 18) sustained a stroke while bathing. The ratio of bathing to other activities in the SAH group was the highest (8.6%), followed by the ICH group (5.5%), whereas that in the CI group was the lowest (2.6%). Regardless of stroke type, only a minority of patients were found to have collapsed inside the bathtub. CONCLUSIONS The higher ratio of bathing in hemorrhagic strokes may indicate that there is a small risk of hemorrhagic stroke while bathing in vulnerable subjects. This retrospective study did not establish a causal relationship between bathing and stroke nor identify risk factors, which means that future prospective studies are warranted. The finding that the great majority of bathing-related stroke patients were found to have collapsed outside the bathtub suggests that the involvement of stroke in drowning accidents in the bathtub may be small.
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Affiliation(s)
- Joji Inamasu
- Department of Neurosurgery, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan.
| | - Masashi Nakatsukasa
- Department of Neurosurgery, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Takeo Oshima
- Department of Neurology, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Kazuhiro Tomiyasu
- Department of Neurology, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Keita Mayanagi
- Department of Neurosurgery, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Akira Imai
- Department of Neurology, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
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46
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Imai A, Toriyama Y, Iesato Y, Hirabayashi K, Sakurai T, Kamiyoshi A, Ichikawa-Shindo Y, Kawate H, Tanaka M, Liu T, Xian X, Zhai L, Dai K, Tanimura K, Liu T, Cui N, Yamauchi A, Murata T, Shindo T. Adrenomedullin Suppresses Vascular Endothelial Growth Factor-Induced Vascular Hyperpermeability and Inflammation in Retinopathy. Am J Pathol 2017; 187:999-1015. [PMID: 28322199 DOI: 10.1016/j.ajpath.2017.01.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Accepted: 01/19/2017] [Indexed: 11/29/2022]
Abstract
Diabetic macular edema (DME) is caused by blood-retinal barrier breakdown associated with retinal vascular hyperpermeability and inflammation, and it is the major cause of visual dysfunction in diabetic retinopathy. Adrenomedullin (ADM) is an endogenous peptide first identified as a strong vasodilator. ADM is expressed in the eyes and is up-regulated in various eye diseases, although the pathophysiological significance is largely unknown. We investigated the effect of ADM on DME. In Kimba mice, which overexpress human vascular endothelial growth factor in their retinas, the capillary dropout, vascular leakage, and vascular fragility characteristic of diabetic retinopathy were observed. Intravitreal or systemic administration of ADM to Kimba mice ameliorated both the capillary dropout and vascular leakage. Evaluation of the transendothelial electrical resistance and fluorescein isothiocyanate-dextran permeability of an endothelial cell monolayer using TR-iBRB retinal capillary endothelial cells revealed that vascular endothelial growth factor enhanced vascular permeability but that co-administration of ADM suppressed the effect, in part by enhancing tight junction formation between endothelial cells. In addition, a comprehensive PCR array analysis showed that ADM administration suppressed various molecules related to inflammation and NF-κB signaling within retinas. From these results, we suggest that by exerting inhibitory effects on retinal inflammation, vascular permeability, and blood-retinal barrier breakdown, ADM could serve as a novel therapeutic agent for the treatment of DME.
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Affiliation(s)
- Akira Imai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Yuichi Toriyama
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Yasuhiro Iesato
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Kazutaka Hirabayashi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan; Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Takayuki Sakurai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Akiko Kamiyoshi
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Yuka Ichikawa-Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Hisaka Kawate
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Megumu Tanaka
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Tian Liu
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Xian Xian
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Liuyu Zhai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Kun Dai
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Keiya Tanimura
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Teng Liu
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | - Nanqi Cui
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan
| | | | - Toshinori Murata
- Department of Ophthalmology, Shinshu University School of Medicine, Nagano, Japan
| | - Takayuki Shindo
- Department of Cardiovascular Research, Shinshu University Graduate School of Medicine, Nagano, Japan.
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47
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Yoneyama T, Tanaka T, Narita T, Oikawa M, Hagiwara K, Yoneyama T, Imai A, Hatakeyama S, Hashimoto Y, Koie T, Ohyama C. 278P Sequential chemotherapy with gemcitabine plus carboplatin, followed by additional docetaxel for advanced upper-tract urothelial cancer patient with impaired renal function. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw583.004] [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: 11/12/2022] Open
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48
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Hashimoto Y, Imai A, Hatakeyama S, Yoneyama T, Koie T, Ohyama C. 291P PD-L1 over expression may predict disease aggressiveness in prostate cancer. Ann Oncol 2016. [DOI: 10.1016/s0923-7534(21)00449-x] [Citation(s) in RCA: 6] [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: 11/25/2022] Open
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49
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Miyauchi S, Kitagaki J, Masumoto R, Imai A, Kobayashi K, Nakaya A, Kawai S, Fujihara C, Asano Y, Yamashita M, Yanagita M, Yamada S, Kitamura M, Murakami S. Sphingomyelin Phosphodiesterase 3 Enhances Cytodifferentiation of Periodontal Ligament Cells. J Dent Res 2016; 96:339-346. [DOI: 10.1177/0022034516677938] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Sphingomyelin phosphodiesterase 3 ( Smpd3), which encodes neutral sphingomyelinase 2 (nSMase2), is a key molecule for skeletal development as well as for the cytodifferentiation of odontoblasts and alveolar bone. However, the effects of nSMase2 on the cytodifferentiation of periodontal ligament (PDL) cells are still unclear. In this study, the authors analyzed the effects of Smpd3 on the cytodifferentiation of human PDL (HPDL) cells. The authors found that Smpd3 increases the mRNA expression of calcification-related genes, such as alkaline phosphatase (ALPase), type I collagen, osteopontin, Osterix (Osx), and runt-related transcription factor (Runx)-2 in HPDL cells. In contrast, GW4869, an inhibitor of nSMase2, clearly decreased the mRNA expression of ALPase, type I collagen, and osteocalcin in HPDL cells, suggesting that Smpd3 enhances HPDL cytodifferentiation. Next, the authors used exome sequencing to evaluate the genetic variants of Smpd3 in a Japanese population with aggressive periodontitis (AgP). Among 44 unrelated subjects, the authors identified a single nucleotide polymorphism (SNP), rs145616324, in Smpd3 as a putative genetic variant for AgP among Japanese people. Moreover, Smpd3 harboring this SNP did not increase the sphingomyelinase activity or mRNA expression of ALPase, type I collagen, osteopontin, Osx, or Runx2, suggesting that this SNP inhibits Smpd3 such that it has no effect on the cytodifferentiation of HPDL cells. These data suggest that Smpd3 plays a crucial role in maintaining the homeostasis of PDL tissue.
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Affiliation(s)
- S. Miyauchi
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - J. Kitagaki
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - R. Masumoto
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - A. Imai
- Department of Genome Informatics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - K. Kobayashi
- Department of Genome Informatics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
- Medical Solutions Division, NEC Corporation, Minato-ku, Tokyo, Japan
| | - A. Nakaya
- Department of Genome Informatics, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - S. Kawai
- Challenge to Intractable Oral Disease, Center for Frontier Oral Science, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - C. Fujihara
- Challenge to Intractable Oral Disease, Center for Translational Dental Research, Osaka University Dental Hospital, Suita, Osaka, Japan
| | - Y. Asano
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
| | - M. Yamashita
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - M. Yanagita
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - S. Yamada
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - M. Kitamura
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
| | - S. Murakami
- Department of Periodontology, Osaka University Graduate School of Dentistry, Suita, Osaka, Japan
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50
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Affiliation(s)
| | - J E Ilkiw
- University of California-Davis, Davis, CA, USA
| | - A Imai
- University of California-Davis, Davis, CA, USA
| | - J A Bolich
- University of California-Davis, Davis, CA, USA
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