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Kawakami R, Hiraide T, Watanabe K, Miyamoto S, Hira K, Komatsu K, Ishigaki H, Sakaguchi K, Maekawa M, Yamashita K, Fukuda T, Miyairi I, Ogata T, Saitsu H. RNA sequencing and target long-read sequencing reveal an intronic transposon insertion causing aberrant splicing. J Hum Genet 2024; 69:91-99. [PMID: 38102195 DOI: 10.1038/s10038-023-01211-8] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/28/2023] [Accepted: 12/01/2023] [Indexed: 12/17/2023]
Abstract
More than half of cases with suspected genetic disorders remain unsolved by genetic analysis using short-read sequencing such as exome sequencing (ES) and genome sequencing (GS). RNA sequencing (RNA-seq) and long-read sequencing (LRS) are useful for interpretation of candidate variants and detection of structural variants containing repeat sequences, respectively. Recently, adaptive sampling on nanopore sequencers enables target LRS more easily. Here, we present a Japanese girl with premature chromatid separation (PCS)/mosaic variegated aneuploidy (MVA) syndrome. ES detected a known pathogenic maternal heterozygous variant (c.1402-5A>G) in intron 10 of BUB1B (NM_001211.6), a known responsive gene for PCS/MVA syndrome with autosomal recessive inheritance. Minigene splicing assay revealed that almost all transcripts from the c.1402-5G allele have mis-splicing with 4-bp insertion. GS could not detect another pathogenic variant, while RNA-seq revealed abnormal reads in intron 2. To extensively explore variants in intron 2, we performed adaptive sampling and identified a paternal 3.0 kb insertion. Consensus sequence of 16 reads spanning the insertion showed that the insertion consists of Alu and SVA elements. Realignment of RNA-seq reads to the new reference sequence containing the insertion revealed that 16 reads have 5' splice site within the insertion and 3' splice site at exon 3, demonstrating causal relationship between the insertion and aberrant splicing. In addition, immunoblotting showed severely diminished BUB1B protein level in patient derived cells. These data suggest that detection of transcriptomic abnormalities by RNA-seq can be a clue for identifying pathogenic variants, and determination of insert sequences is one of merits of LRS.
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Affiliation(s)
- Ryota Kawakami
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takuya Hiraide
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kazuki Watanabe
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Sachiko Miyamoto
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kota Hira
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kazuyuki Komatsu
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hidetoshi Ishigaki
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kimiyoshi Sakaguchi
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Masato Maekawa
- Department of Laboratory Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Keita Yamashita
- Department of Laboratory Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tokiko Fukuda
- Department of Hamamatsu Child Health and Developmental Medicine, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Isao Miyairi
- Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tsutomu Ogata
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
- Department of Pediatrics, Hamamatsu Medical Center, Hamamatsu, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan.
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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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P, Pesce F, Pessolano G, Petchey W, Petr EJ, Pfab T, Phelan P, Phillips R, Phillips T, Phipps M, Piccinni G, Pickett T, Pickworth S, Piemontese M, Pinto D, Piper J, Plummer-Morgan J, Poehler D, Polese L, Poma V, Pontremoli R, Postal A, Pötz C, Power A, Pradhan N, Pradhan R, Preiss D, Preiss E, Preston K, Prib N, Price L, Provenzano C, Pugay C, Pulido R, Putz F, Qiao Y, Quartagno R, Quashie-Akponeware M, Rabara R, Rabasa-Lhoret R, Radhakrishnan D, Radley M, Raff R, Raguwaran S, Rahbari-Oskoui F, Rahman M, Rahmat K, Ramadoss S, Ramanaidu S, Ramasamy S, Ramli R, Ramli S, Ramsey T, Rankin A, Rashidi A, Raymond L, Razali WAFA, Read K, Reiner H, Reisler A, Reith C, Renner J, Rettenmaier B, Richmond L, Rijos D, Rivera R, Rivers V, Robinson H, Rocco M, Rodriguez-Bachiller I, Rodriquez R, Roesch C, Roesch J, Rogers J, Rohnstock M, Rolfsmeier S, Roman M, Romo A, Rosati A, Rosenberg S, Ross T, Rossello X, Roura M, Roussel M, Rovner S, Roy S, Rucker S, Rump L, Ruocco M, Ruse S, Russo F, Russo M, Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, Shimano H, Shimizu Y, Shimoda H, Shin K, Shivashankar G, Shojima N, Silva R, Sim CSB, Simmons K, Sinha S, Sitter T, Sivanandam S, Skipper M, Sloan K, Sloan L, Smith R, Smyth J, Sobande T, Sobata M, Somalanka S, Song X, Sonntag F, Sood B, Sor SY, Soufer J, Sparks H, Spatoliatore G, Spinola T, Squyres S, Srivastava A, Stanfield J, Staplin N, Staylor K, Steele A, Steen O, Steffl D, Stegbauer J, Stellbrink C, Stellbrink E, Stevens W, Stevenson A, Stewart-Ray V, Stickley J, Stoffler D, Stratmann B, Streitenberger S, Strutz F, Stubbs J, Stumpf J, Suazo N, Suchinda P, Suckling R, Sudin A, Sugamori K, Sugawara H, Sugawara K, Sugimoto D, Sugiyama H, Sugiyama H, Sugiyama T, Sullivan M, Sumi M, Suresh N, Sutton D, Suzuki H, Suzuki R, Suzuki Y, Suzuki Y, Suzuki Y, Swanson E, Swift P, Syed S, Szerlip H, Taal M, Taddeo M, Tailor C, Tajima K, Takagi M, Takahashi K, Takahashi K, Takahashi M, Takahashi T, Takahira E, Takai T, Takaoka M, Takeoka J, Takesada A, Takezawa M, Talbot M, Taliercio J, Talsania T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Matsuki T, Yanagi H, Koba T, Aso H, Sakaguchi S, Ito S, Kouyama K, Furuta K, Miyazaki A, Sumitani H, Yokoyama M, Miyamoto S, Fukai M, Hashimoto K, Nii T, Hashimoto H, Fukushima K, Tsujino K, Miki K, Kida H, Kumanogoh A. Comparing the MiniBox™ and the Chestac-8900 ® for pulmonary function testing. Int J Tuberc Lung Dis 2023; 27:709-711. [PMID: 37608481 PMCID: PMC10443784 DOI: 10.5588/ijtld.23.0212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 05/18/2023] [Indexed: 08/24/2023] Open
Affiliation(s)
- T Matsuki
- Departments of Respiratory Medicine, and
| | - H Yanagi
- Departments of Clinical Laboratory, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Osaka
| | - T Koba
- Departments of Respiratory Medicine, and
| | - H Aso
- ASTEM Incorporation, Saga
| | - S Sakaguchi
- Departments of Clinical Laboratory, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Osaka
| | - S Ito
- Departments of Clinical Laboratory, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Osaka
| | - K Kouyama
- Departments of Clinical Laboratory, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Osaka
| | - K Furuta
- Departments of Clinical Laboratory, National Hospital Organization Osaka Toneyama Medical Center, Toyonaka, Osaka
| | - A Miyazaki
- Departments of Respiratory Medicine, and
| | - H Sumitani
- Departments of Respiratory Medicine, and
| | - M Yokoyama
- Departments of Respiratory Medicine, and
| | - S Miyamoto
- Departments of Respiratory Medicine, and
| | - M Fukai
- Departments of Respiratory Medicine, and
| | | | - T Nii
- Departments of Respiratory Medicine, and
| | | | - K Fukushima
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - K Tsujino
- Departments of Respiratory Medicine, and
| | - K Miki
- Departments of Respiratory Medicine, and
| | - H Kida
- Departments of Respiratory Medicine, and
| | - A Kumanogoh
- Department of Respiratory Medicine and Clinical Immunology, Osaka University Graduate School of Medicine, Osaka, Japan
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Chan M, Silveira L, Patterson D, Bock M, Pietra B, Everitt M, Simpson K, Miyamoto S, Auerbach S. Predictors of Long-Term Renal Insufficiency in Repeat Pediatric Heart Transplants. J Heart Lung Transplant 2023. [DOI: 10.1016/j.healun.2023.02.1335] [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: 04/05/2023] Open
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Miyamoto S, Nakamura K, Kato M, Nakashima M, Saitsu H. Identification of pathogenic deep intronic variant and exonic LINE‐1 insertion in a patient with Meckel syndrome. Ann Hum Genet 2023. [DOI: 10.1111/ahg.12507] [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] [Received: 12/21/2022] [Revised: 03/12/2023] [Accepted: 03/13/2023] [Indexed: 03/29/2023]
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Hiraide T, Akita T, Uematsu K, Miyamoto S, Nakashima M, Sasaki M, Fukuda A, Kato M, Saitsu H. A novel de novo KCNB1 variant altering channel characteristics in a patient with periventricular heterotopia, abnormal corpus callosum, and mild seizure outcome. J Hum Genet 2023; 68:25-31. [PMID: 36257979 DOI: 10.1038/s10038-022-01090-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/31/2022] [Accepted: 10/01/2022] [Indexed: 01/20/2023]
Abstract
KCNB1 encodes the α-subunit of Kv2.1, the main contributor to neuronal delayed rectifier potassium currents. The subunit consists of six transmembrane α helices (S1-S6), comprising the voltage-sensing domain (S1-S4) and the pore domain (S5-P-S6). Heterozygous KCNB1 pathogenic variants are associated with developmental and epileptic encephalopathy. Here we report an individual who shows the milder phenotype compared to the previously reported cases, including delayed language development, mild intellectual disability, attention deficit hyperactivity disorder, late-onset epilepsy responsive to an antiepileptic drug, elevation of serum creatine kinase, and peripheral axonal neuropathy. On the other hand, his brain MRI showed characteristic findings including periventricular heterotopia, polymicrogyria, and abnormal corpus callosum. Exome sequencing identified a novel de novo KCNB1 variant c.574G>A, p.(Ala192Thr) located in the S1 segment of the voltage-sensing domain. Functional analysis using the whole-cell patch-clamp technique in Neuro2a cells showed that the Ala192Thr mutant reduces both activation and inactivation of the channel at membrane voltages in the range of -50 to -30 mV. Our case could expand the phenotypic spectrum of patients with KCNB1 variants, and suggested that variants located in the S1 segment might be associated with a milder outcome of seizures.
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Affiliation(s)
- Takuya Hiraide
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan.,Department of Pediatrics, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tenpei Akita
- Department of Neurophysiology, Hamamatsu University School of Medicine, Hamamatsu, Japan. .,Division of Health Science, Department of Basic Nursing, Hamamatsu University School of Medicine, Hamamatsu, Japan.
| | - Kenji Uematsu
- Department of Child Neurology, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Sachiko Miyamoto
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsuko Nakashima
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Masayuki Sasaki
- Department of Child Neurology, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Atsuo Fukuda
- Department of Neurophysiology, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan.
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Okahisa M, Udagawa H, Matsumoto S, Kato T, Oizumi S, Furuya N, Hayakawa D, Toyozawa R, Nishiyama A, Ohashi K, Miyamoto S, Nishino K, Oi H, Sakai T, Shibata Y, Izumi H, Sugiyama E, Nosaki K, Zenke Y, Yoh K, Goto K. EP08.02-113 Clinico-genomic Characteristics of Patients with Non-small Cell Lung Cancer Harboring EGFR Exon 20 Insertion Mutations. J Thorac Oncol 2022. [DOI: 10.1016/j.jtho.2022.07.796] [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: 10/14/2022]
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Funaki T, Miyakoshi A, Kataoka H, Takahashi JC, Takagi Y, Yoshida K, Kikuchi T, Mineharu Y, Okawa M, Yamao Y, Fushimi Y, Miyamoto S. Larger Posterior Revascularization Associated with Reduction of Choroidal Anastomosis in Moyamoya Disease: A Quantitative Angiographic Analysis. AJNR Am J Neuroradiol 2022; 43:1279-1285. [PMID: 36007950 PMCID: PMC9451642 DOI: 10.3174/ajnr.a7609] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 06/28/2022] [Indexed: 01/26/2023]
Abstract
BACKGROUND AND PURPOSE Choroidal anastomosis, a hemorrhage-prone periventricular collateral manifestation in Moyamoya disease, outflows to the cortex posterior to the central sulcus. The objective of the present study was to test whether the angiographic extent of revascularization posterior to the central sulcus contributes to the postoperative reduction of choroidal anastomosis. MATERIALS AND METHODS This retrospective cohort study included choroidal anastomosis-positive hemispheres before direct bypass surgery. The postoperative reduction of choroidal anastomosis was determined by a consensus of 2 raters according to the previous research. An imaging software automatically traced the angiographic revascularization area, which was subsequently divided into anterior and posterior parts by an anatomic line corresponding to the central sulcus. Each area was quantitatively measured as a percentage relative to the whole supratentorial area. RESULTS Postoperative reduction of choroidal anastomosis was achieved in 68 (85.0%) of the 80 included hemispheres. The revascularization area posterior to the central sulcus was significantly larger in the hemispheres with reduction than in those with no reduction (mean, 15.2% [SD, 7.1%] versus 4.2% [SD, 3.4%], P < .001), whereas no significant difference was observed in the revascularization area anterior to the central sulcus. Multivariate analysis revealed that the revascularization area posterior to the central sulcus was the only significant factor associated with reduction (OR, 1.57; 95% CI, 1.21-2.03, for every 1% increase). CONCLUSIONS The results suggest that a larger revascularization posterior to the central sulcus is associated with postoperative reduction of choroidal anastomosis regardless of the extent of anterior revascularization. It might facilitate optimal selection of the revascularization site for preventing hemorrhage.
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Affiliation(s)
- T Funaki
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
| | - A Miyakoshi
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
| | - H Kataoka
- Department of Neurosurgery (H.K.), National Cerebral and Cardiovascular Center, Osaka, Japan
| | - J C Takahashi
- Department of Neurosurgery (J.C.T.), Kindai University Faculty of Medicine, Osaka, Japan
| | - Y Takagi
- Department of Neurosurgery (Y.T.), Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - K Yoshida
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
| | - T Kikuchi
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
| | - Y Mineharu
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
| | - M Okawa
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
| | - Y Yamao
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
| | - Y Fushimi
- Diagnostic Imaging and Nuclear Medicine (Y.F.), Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - S Miyamoto
- From the Departments of Neurosurgery (T.F., A.M., K.Y., T.K., Y.M., M.O., Y.Y., S.M.)
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Otani T, Iwamoto H, Horimasu Y, Yamaguchi K, Sakamoto S, Masuda T, Miyamoto S, Nakashima T, Fujitaka K, Hamada H, Hattori N. Effect of dupilumab in a patient with severe asthma complicated with recurrent anaphylaxis: a case report. J Investig Allergol Clin Immunol 2022:0. [DOI: 10.18176/jiaci.0840] [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: 11/20/2022] Open
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Furukawa S, Miyamoto S, Fukumura S, Kubota K, Taga T, Nakashima M, Saitsu H. Two novel heterozygous variants in ATP1A3 cause movement disorders. Hum Genome Var 2022; 9:7. [PMID: 35181663 PMCID: PMC8857201 DOI: 10.1038/s41439-022-00184-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 01/05/2022] [Accepted: 01/05/2022] [Indexed: 01/15/2023] Open
Abstract
Variants in ATP1A3 cause neuropsychiatric disorders, especially those characterized by movement disorders. In this study, we performed whole exome sequencing for two patients with movement disorders and identified two novel heterozygous ATP1A3 variants, a missense c.2408G>A variant and an indel c.2672_2688+10delinsCAG variant. The unique indel variant occurred at the exon-intron boundary at the 3' end of exon 19, and mRNA analysis revealed that this variant caused in-frame indel alteration at the Ser891_Trp896 residue.
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Affiliation(s)
- Shogo Furukawa
- grid.505613.40000 0000 8937 6696Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Sachiko Miyamoto
- grid.505613.40000 0000 8937 6696Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shinobu Fukumura
- grid.263171.00000 0001 0691 0855Department of Pediatrics, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kazuo Kubota
- grid.256342.40000 0004 0370 4927Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan ,grid.411704.7Division of Clinical Genetics, Gifu University Hospital, Gifu, Japan
| | - Toshiaki Taga
- grid.416372.50000 0004 1772 6481Department of Pediatrics, Nagahama City Hospital, Shiga, Japan
| | - Mitsuko Nakashima
- grid.505613.40000 0000 8937 6696Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hirotomo Saitsu
- grid.505613.40000 0000 8937 6696Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Hiraide T, Shimizu K, Miyamoto S, Aoto K, Nakashima M, Yamaguchi T, Kosho T, Ogata T, Saitsu H. Genome sequencing and RNA sequencing of urinary cells reveal an intronic FBN1 variant causing aberrant splicing. J Hum Genet 2022; 67:387-392. [DOI: 10.1038/s10038-022-01016-1] [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] [Received: 10/13/2021] [Revised: 12/28/2021] [Accepted: 01/13/2022] [Indexed: 11/09/2022]
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Noguchi Y, Hinokuma N, Tominaga M, Miyamoto S, Nakashima M. LAMA1 variants were identified Joubert syndrome patient. Pediatr Int 2022; 64:e14980. [PMID: 35224822 DOI: 10.1111/ped.14980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/19/2021] [Accepted: 08/26/2021] [Indexed: 12/01/2022]
Affiliation(s)
- Yutaro Noguchi
- Children's Medical Center, Showa University Northern Yokohama Hospital, Yokohama City, Kanagawa, Japan
| | - Nodoka Hinokuma
- Departments of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Makiko Tominaga
- Children's Medical Center, Showa University Northern Yokohama Hospital, Yokohama City, Kanagawa, Japan
| | - Sachiko Miyamoto
- Biochemistry Department, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsuko Nakashima
- Biochemistry Department, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Yamamoto A, Fukumura S, Habata Y, Miyamoto S, Nakashima M, Takashima S, Kawasaki Y, Shimozawa N, Saitsu H. Novel HSD17B4 Variants Cause Progressive Leukodystrophy in Childhood: Case Report and Literature Review. Child Neurol Open 2021; 8:2329048X211048613. [PMID: 34660840 PMCID: PMC8512218 DOI: 10.1177/2329048x211048613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 09/07/2021] [Indexed: 11/15/2022] Open
Abstract
D-bifunctional protein (DBP) deficiency is a peroxisomal disorder with a high degree of phenotypic heterogeneity. Some patients with DBP deficiency develop progressive leukodystrophy in childhood. We report a 6-year-old boy with moderate hearing loss who presented with developmental regression. Brain magnetic resonance imaging demonstrated progressive leukodystrophy. However, very long chain fatty acids (VLCFAs) in the plasma were at normal levels. Whole-exome sequencing revealed compound heterozygous variants in HSD17B4 (NM_000414.3:c.[350A > T];[394C > T], p.[[Asp117Val]];[[Arg132Trp]]). The c.394C > T variant has been identified in patients with DBP deficiency and is classified as likely pathogenic, while the c.350A > T variant was novel and classified as uncertain significance. Although one of the two variants was classified as uncertain significance, an accumulation of phytanic and pristanic acids was identified in the patient, confirming type III DBP deficiency. DBP deficiency should be considered as a diagnosis in children with progressive leukodystrophy and hearing loss even if VLCFAs are within normal levels.
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Affiliation(s)
- Akiyo Yamamoto
- Sapporo Medical University School of Medicine, Sapporo, Japan
| | | | - Yumi Habata
- Hokkaido Medical Center for Child Health and Rehabilitation, Sapporo, Japan
| | | | | | - Shigeo Takashima
- Division of Genomics Research, Life Science Research Center, Gifu University, Gifu, Japan
| | | | - Nobuyuki Shimozawa
- Division of Genomics Research, Life Science Research Center, Gifu University, Gifu, Japan
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Wakabayashi T, Miyamoto S, Sasaoka Y, Kudo Y, Nakamura S, Noda T, Kawashima Y, Yamamoto Y, Sakai Y, Kawasaki Y. Gastrointestinal: Pediatric pseudo-single magnet ingestion diagnosed by multidirectional X-ray and computed tomography. J Gastroenterol Hepatol 2021; 36:2035. [PMID: 33569845 DOI: 10.1111/jgh.15408] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 01/12/2021] [Indexed: 12/09/2022]
Affiliation(s)
- T Wakabayashi
- Department of Pediatrics, Hakodate Municipal Hospital, Hakodate, Japan
| | - S Miyamoto
- Department of Gastroenterology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Y Sasaoka
- Department of Pediatrics, Sapporo Medical University, Sapporo, Hokkaido, Japan
| | - Y Kudo
- Department of Pediatrics, Hakodate Municipal Hospital, Hakodate, Japan
| | - S Nakamura
- Department of Pediatrics, Hakodate Municipal Hospital, Hakodate, Japan
| | - T Noda
- Department of Pediatrics, Hakodate Municipal Hospital, Hakodate, Japan
| | - Y Kawashima
- Department of Pediatrics, Hakodate Municipal Hospital, Hakodate, Japan
| | - Y Yamamoto
- Department of Gastroenterology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Y Sakai
- Department of Pediatrics, Hakodate Municipal Hospital, Hakodate, Japan
| | - Y Kawasaki
- Department of Pediatrics, Sapporo Medical University, Sapporo, Hokkaido, Japan
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Negishi Y, Aoki Y, Itomi K, Yasuda K, Taniguchi H, Ishida A, Arakawa T, Miyamoto S, Nakashima M, Saitsu H, Saitoh S. SCN8A-related developmental and epileptic encephalopathy with ictal asystole requiring cardiac pacemaker implantation. Brain Dev 2021; 43:804-808. [PMID: 33827760 DOI: 10.1016/j.braindev.2021.03.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 03/16/2021] [Accepted: 03/17/2021] [Indexed: 10/21/2022]
Abstract
INTRODUCTION SCN8A-related epilepsy has various phenotypes. In particular, patients with developmental and epileptic encephalopathy (DEE) are resistant to antiepileptic drugs and may present with autonomic symptoms, such as marked bradycardia and apnea during seizures, and thus have an increased risk of sudden death. Herein, we report a case of very severe SCN8A-related epilepsy necessitating cardiac pacemaker implantation because of repetitive ictal asystole. CASE REPORT The patient was a 14-month-old girl. Tremor and generalized tonic seizure occurred after birth. During seizures, bradycardia and perioral cyanosis occurred, and then, after developing tachycardia and apnea, marked bradycardia and generalized cyanosis occurred, which sometimes resulted in ictal asystole requiring cardiopulmonary resuscitation. Her seizures were refractory to antiepileptic drugs. As the seizures requiring resuscitation did not decrease, cardiac pacemaker implantation was performed four months after birth. Exome sequencing revealed a heterozygous de novo variant in SCN8A (NM_014191.3:c.4934T>C,p.(Met1645Thr)). Even though phenytoin was effective, seizures with bradycardia remained approximately once a month, and pacemaker activity was observed. CONCLUSIONS This is, to our knowledge, the first reported case of SCN8A-related DEE in whom pacemaker implantation was performed. Pacemaker implantation should be considered as a treatment option for critical patients with SCN8A-related DEE as in the present case, because the incidence of sudden unexpected death in epilepsy is reported to be approximately 10% in patients with SCN8A-related DEE.
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Affiliation(s)
- Yutaka Negishi
- Department of Pediatrics, Gifu Prefectural Tajimi Hospital, Tajimi, Japan; Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
| | - Yusuke Aoki
- Department of Neurology, Aichi Children's Health and Medical Center, Obu, Japan
| | - Kazuya Itomi
- Department of Neurology, Aichi Children's Health and Medical Center, Obu, Japan
| | - Kazushi Yasuda
- Department of Cardiology, Aichi Children's Health and Medical Center, Obu, Japan
| | - Hiroaki Taniguchi
- Department of Pediatrics, Gifu Prefectural Tajimi Hospital, Tajimi, Japan
| | - Atsushi Ishida
- Department of Pediatrics, Gifu Prefectural Tajimi Hospital, Tajimi, Japan
| | - Takeshi Arakawa
- Department of Pediatrics, Gifu Prefectural Tajimi Hospital, Tajimi, Japan
| | - Sachiko Miyamoto
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsuko Nakashima
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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17
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Miyamoto S, Kato M, Hiraide T, Shiohama T, Goto T, Hojo A, Ebata A, Suzuki M, Kobayashi K, Chong PF, Kira R, Matsushita HB, Ikeda H, Hoshino K, Matsufuji M, Moriyama N, Furuyama M, Yamamoto T, Nakashima M, Saitsu H. Comprehensive genetic analysis confers high diagnostic yield in 16 Japanese patients with corpus callosum anomalies. J Hum Genet 2021; 66:1061-1068. [PMID: 33958710 DOI: 10.1038/s10038-021-00932-y] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 04/12/2021] [Accepted: 04/16/2021] [Indexed: 12/24/2022]
Abstract
Corpus callosum anomalies (CCA) is a common congenital brain anomaly with various etiologies. Although one of the most important etiologies is genetic factors, the genetic background of CCA is heterogenous and diverse types of variants are likely to be causative. In this study, we analyzed 16 Japanese patients with corpus callosum anomalies to delineate clinical features and the genetic background of CCAs. We observed the common phenotypes accompanied by CCAs: intellectual disability (100%), motor developmental delay (93.8%), seizures (60%), and facial dysmorphisms (50%). Brain magnetic resonance imaging showed colpocephaly (enlarged posterior horn of the lateral ventricles, 84.6%) and enlarged supracerebellar cistern (41.7%). Whole exome sequencing revealed genetic alterations in 9 of the 16 patients (56.3%), including 8 de novo alterations (2 copy number variants and variants in ARID1B, CDK8, HIVEP2, and TCF4) and a recessive variant of TBCK. De novo ARID1B variants were identified in three unrelated individuals, suggesting that ARID1B variants are major genetic causes of CCAs. A de novo TCF4 variant and somatic mosaic deletion at 18q21.31-qter encompassing TCF4 suggest an association of TCF4 abnormalities with CCAs. This study, which analyzes CCA patients usung whole exome sequencing, demonstrates that comprehensive genetic analysis would be useful for investigating various causal variants of CCAs.
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Affiliation(s)
- Sachiko Miyamoto
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Takuya Hiraide
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tadashi Shiohama
- Department of Pediatrics, Graduated School of Medicine, Chiba University, Chiba, Japan
| | - Tomohide Goto
- Division of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Akira Hojo
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Akio Ebata
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Manabu Suzuki
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Kozue Kobayashi
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Pin Fee Chong
- Department of Pediatric Neurology, Fukuoka Children's Hospital, Fukuoka, Japan
| | - Ryutaro Kira
- Department of Pediatric Neurology, Fukuoka Children's Hospital, Fukuoka, Japan
| | | | - Hiroko Ikeda
- Department of Pediatrics, National Epilepsy Center, NHO Shizuoka Institute of Epilepsy and Neurological Disorders, Shizuoka, Japan
| | - Kyoko Hoshino
- Segawa Memorial Neurological Clinic for Children, Tokyo, Japan
| | - Mayumi Matsufuji
- Department of Pediatrics, Minami Kyushu National Hospital, Aira, Japan
| | - Nobuko Moriyama
- Department of Pediatrics, Hitachi, Ltd., Hitachinaka General Hospital, Hitachinaka, Japan
| | - Masayuki Furuyama
- Department of Pediatrics, Okitama Public General Hospital, Yamagata, Japan
| | - Tatsuya Yamamoto
- Department of Pediatrics, Hirosaki University School of Medicine, Hirosaki, Japan
| | - Mitsuko Nakashima
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan.
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan.
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18
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Miyakoshi A, Funaki T, Fushimi Y, Nakae T, Okawa M, Kikuchi T, Kataoka H, Yoshida K, Mineharu Y, Matsuhashi M, Nakatani E, Miyamoto S. Cortical Distribution of Fragile Periventricular Anastomotic Collateral Vessels in Moyamoya Disease: An Exploratory Cross-Sectional Study of Japanese Patients with Moyamoya Disease. AJNR Am J Neuroradiol 2020; 41:2243-2249. [PMID: 33154076 DOI: 10.3174/ajnr.a6861] [Citation(s) in RCA: 8] [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] [Received: 05/01/2020] [Accepted: 08/06/2020] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Collateral vessels in Moyamoya disease represent potential sources of bleeding. To test whether these cortical distributions vary among subtypes, we investigated cortical terminations using both standardized MR imaging and MRA. MATERIALS AND METHODS Patients with Moyamoya disease who underwent MR imaging with MRA in our institution were enrolled in this study. MRA was spatially normalized to the Montreal Neurological Institute space; then, collateral vessels were measured on MRA and classified into 3 types of anastomosis according to the parent artery: lenticulostriate, thalamic, and choroidal. We also obtained the coordinates of collateral vessel outflow to the cortex. Differences in cortical terminations were compared among the 3 types of anastomosis. RESULTS We investigated 219 patients with Moyamoya disease, and a total of 190 collateral vessels (lenticulostriate anastomosis, n = 72; thalamic anastomosis, n = 21; choroidal anastomosis, n = 97) in 46 patients met the inclusion criteria. We classified the distribution patterns of collateral anastomosis as follows: lenticulostriate collaterals outflowing anteriorly (P < .001; 95% CI, 67.0-87.0) and medially (P < .001; 95% CI, 11.0-24.0) more frequently than choroidal collaterals; lenticulostriate collaterals outflowing anteriorly more frequently than thalamic collaterals (P < .001; 95% CI, 34.0-68.0); and choroidal collaterals outflowing posteriorly more frequently than thalamic collaterals (P < .001; 95% CI, 14.0-34.0). Lenticulostriate anastomoses outflowed to the superior or inferior frontal sulcus and interhemispheric fissure. Thalamic anastomoses outflowed to the insular cortex and cortex around the central sulcus. Choroidal anastomoses outflowed to the cortex posterior to the central sulcus and the insular cortex. CONCLUSIONS Cortical distribution patterns appear to differ markedly among the 3 types of collaterals.
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Affiliation(s)
- A Miyakoshi
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
- Department of Neurosurgery (A.M.)
| | - T Funaki
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
| | - Y Fushimi
- Diagnostic Imaging and Nuclear Medicine (Y.F.)
| | - T Nakae
- Department of Neurosurgery (T.N.), Shiga General Hospital, Shiga, Japan
| | - M Okawa
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
| | - T Kikuchi
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
| | - H Kataoka
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
| | - K Yoshida
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
| | - Y Mineharu
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
| | - M Matsuhashi
- Epilepsy, Movement Disorders and Physiology (M.M.), Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - E Nakatani
- Division of Statistical Analysis (E.N.), Shizuoka General Hospital, Shizuoka, Japan
| | - S Miyamoto
- From the Department of Neurosurgery (A.M., T.F., M.O., T.K., H.K., K.Y., Y.M., S.M.)
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19
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Ikeda T, Ogawa S, Kitazono T, Nakagawara J, Minematsu K, Miyamoto S, Murakawa Y, Iwashiro S, Hayashi Y, Okayama Y, Sunaya T, Sato S, Yamanaka S. Long-term outcomes of Japan-specific dosage of rivaroxaban in high-risk patients with non-valvular atrial fibrillation: analysis from the XAPASS. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
XAPASS is a real-world, prospective, single-arm, observational study conducted as a post-marketing surveillance mandated by the health authority in Japan. Nowadays, direct oral anticoagulant therapy using factor Xa or thrombin inhibitor has been the standard of care for patients with non-valvular atrial fibrillation (NVAF) to prevent ischemic stroke. However, the clinical impact of reduced dosage (approved dose of 15 or 10 mg once daily in Japan is relatively reduced compared to global dosage) factor Xa inhibitor rivaroxaban in high-risk patients remains unclear.
Purpose
The present sub-analysis of XAPASS was carried out to assess long-term safety and effectiveness of reduced-dose rivaroxaban in high-risk NVAF patients for bleeding and thromboembolism.
Methods
All patients with NVAF who were newly started on rivaroxaban were eligible for surveillance. The principal safety outcome was a composite of major and non-major bleeding events, and the primary effectiveness outcome was a composite of ischaemic stroke, haemorrhagic stroke, non-central nervous system systemic embolism (non-CNS SE), and myocardial infarction (MI). In this present sub-analysis, high-risk patients were defined as those who had two of the following three risk factors: elderly (≥75 years old), low body weight (≤50 kg), and renal impairment (CrCl <50 mL/min).
Results
In total, 11,308 patients were enrolled between April 2012 and June 2014 from 1,419 hospitals, and overall data were analysed from 10,664 patients from whom data were collected. Among them, 3,694 patients matched the criteria for the high-risk patients defined in this sub-analysis, and 6,970 patients did not match the criteria (non-high-risk patients). The mean treatment duration was 791±673 days in the high-risk patients and 944±709 days in the non-high-risk patients. Mean patient age was 80.9±5.5 years and 69.0±9.0 years at baseline, respectively. Mean CHADS2 score was 2.8 and 1.8, and CHA2DS2-VASc score was 4.4 and 2.9, respectively. The rates of CHADS2 component comorbidities were lower in the non-high-risk patients except for diabetes mellitus. The incidence rates of any bleeding, major bleeding, and the primary effectiveness outcomes were 4.8, 1.6, and 2.1%/patient-year in the high-risk patients. The incidence rates of these clinical events in the non-high-risk patients were 3.3, 0.9, and 1.0%/patient-year, respectively.
Conclusions
Incidence rates of long-term bleeding and thromboembolism were higher in the high-risk patients than in the non-high-risk patients. However, the rates of these outcomes using the Japan-specific reduced dose were not so high. Furthermore, the balance between safety and effectiveness outcomes was within an acceptable range. The present study provides useful information for physicians to stratify high-risk patients using the reduced dose in daily clinical practice.
Funding Acknowledgement
Type of funding source: Private company. Main funding source(s): Bayer Yakuhin Ltd.
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Affiliation(s)
- T Ikeda
- Toho University, Department of Cardiovascular Medicine, Tokyo, Japan
| | - S Ogawa
- IUHW Mita Hospital, Tokyo, Japan
| | - T Kitazono
- Kyushu University Graduate School of Medical Sciences, Department of Medical and Clinical Science, Fukuoka, Japan
| | - J Nakagawara
- National Cerebral & Cardiovascular Center, Suita, Japan
| | - K Minematsu
- National Cerebral & Cardiovascular Center, Suita, Japan
| | - S Miyamoto
- Kyoto University Graduate School of Medicine, Department of Neurosurgery, Kyoto, Japan
| | - Y Murakawa
- Mizonokuchi Hospital, Teikyo University School of Medicine, The 4th Department of Internal Medicine, Kawasaki, Japan
| | - S Iwashiro
- Bayer Yakuhin Ltd., Medical Affairs, Osaka, Japan
| | - Y Hayashi
- Bayer Yakuhin Ltd., Medical Affairs, Osaka, Japan
| | - Y Okayama
- Bayer Yakuhin Ltd., Medical Affairs, Osaka, Japan
| | - T Sunaya
- Bayer Yakuhin Ltd., Research and Development, Osaka, Japan
| | - S Sato
- Bayer Yakuhin Ltd., Medical Affairs, Osaka, Japan
| | - S Yamanaka
- Bayer Yakuhin Ltd., Medical Affairs, Osaka, Japan
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Kashiki H, Li H, Miyamoto S, Ueno H, Tsurusaki Y, Ikeda C, Kurata H, Okada T, Shimazu T, Imamura H, Enomoto Y, Takanashi JI, Kurosawa K, Saitsu H, Inoue K. POLR1C variants dysregulate splicing and cause hypomyelinating leukodystrophy. Neurol Genet 2020; 6:e524. [PMID: 33134519 PMCID: PMC7577547 DOI: 10.1212/nxg.0000000000000524] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 08/19/2020] [Indexed: 12/20/2022]
Abstract
Objective To further clarify the molecular pathogenesis of RNA polymerase III (Pol III)-related leukodystrophy caused by biallelic POLR1C variants at a cellular level and potential effects on its downstream genes. Methods Exome analysis and molecular functional studies using cell expression and long-read sequencing analyses were performed on 1 family with hypomyelinating leukodystrophy showing no clinical and MRI findings characteristic of Pol III–related leukodystrophy other than hypomyelination. Results Biallelic novel POLR1C alterations, c.167T>A, p.M56K and c.595A>T, p.I199F, were identified as causal variants. Functional analyses showed that these variants not only resulted in altered protein subcellular localization and decreased protein expression but also caused abnormal inclusion of introns in 85% of the POLR1C transcripts in patient cells. Unexpectedly, allelic segregation analysis in each carrier parent revealed that each heterozygous variant also caused the inclusion of introns on both mutant and wild-type alleles. These findings suggest that the abnormal splicing is not direct consequences of the variants, but rather reflect the downstream effect of the variants in dysregulating splicing of POLR1C, and potentially other target genes. Conclusions The lack of characteristic clinical findings in this family confirmed the broad clinical spectrum of Pol III–related leukodystrophy. Molecular studies suggested that dysregulation of splicing is the potential downstream pathomechanism for POLR1C variants.
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Affiliation(s)
- Hitoshi Kashiki
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Heng Li
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Sachiko Miyamoto
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Hiroe Ueno
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Yoshinori Tsurusaki
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Chizuru Ikeda
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Hirofumi Kurata
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Takumi Okada
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Tomoyuki Shimazu
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Hoseki Imamura
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Yumi Enomoto
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Jun-Ichi Takanashi
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Kenji Kurosawa
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Hirotomo Saitsu
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
| | - Ken Inoue
- Department of Pediatrics (H.K.), Minamata City General Hospital & Medical Center, Kumamoto; Department of Mental Retardation and Birth Defect Research (H.L., K.I.), National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Tokyo; Department of Biochemistry (S.M., H.S.), Hamamatsu University School of Medicine, Shizuoka; Department of Pediatrics (H.U.), Kumamoto Takumadai Rehabilitation Hospital; Kanagawa Children's Medical Center (Y.T., Y.E.), Clinical Research Institute, Yokohama, Kanagawa; Department of Pediatrics (C.I., H.K., T.O., T.S., H.I.), National Hospital Organization Kumamoto Saishun Medical Center, Koshi; Clinical Research Institute, Kanagawa Children's Medical Center, (Y.E.), Yokohama, Kanagawa; Department of Pediatric Neurology (J.T.), Tokyo Women's Medical University Yachiyo Medical Center, Chiba; and Division of Medical Genetics (K.K.), Kanagawa Children's Medical Center, Yokohama, Japan
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21
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Noro R, Igawa S, Bessho A, Hirose T, Tsuneo S, Nakashima M, MInato K, Seki N, Tokito T, Harada T, Sasada S, Miyamoto S, Tanaka Y, Furuya N, Kaburagi T, Hayashi H, Iihara H, Naoki K, Okamoto H, Kubota K. 1365P A prospective, phase II trial of low-dose afatinib monotherapy for patients with EGFR, mutation-positive, non-small cell lung cancer (TORG1632). Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1679] [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: 11/29/2022] Open
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22
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Miyamoto S, Aoto K, Hiraide T, Nakashima M, Takabayashi S, Saitsu H. Nanopore sequencing reveals a structural alteration of mirror-image duplicated genes in a genome-editing mouse line. Congenit Anom (Kyoto) 2020; 60:120-125. [PMID: 31837184 DOI: 10.1111/cga.12364] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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] [Received: 09/10/2019] [Revised: 11/22/2019] [Accepted: 12/08/2019] [Indexed: 02/04/2023]
Abstract
CRISPR-Cas9 technology has been used in various studies; however, it has also been found to introduce unexpected structural alternations. In this study, we used nanopore sequencing to characterize an unexpected structural alteration of mirror-image duplicated genes in a mouse line, in which we aimed to delete a part of the duplicated genes using genome editing. We removed low-molecular-weight DNA fragments and increased the input, which led to improved sequence performance. With 14.9 Gb input for whole-genome analysis, we detected a complex structural alteration involving inversion and deletion, which appears to be difficult to characterize with short-read sequencers. Therefore, our study clearly showed the utility of nanopore sequencing for characterizing unexpected complex structural alterations caused by genome editing.
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Affiliation(s)
- Sachiko Miyamoto
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kazushi Aoto
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Takuya Hiraide
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsuko Nakashima
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Shuji Takabayashi
- Laboratory Animal Facilities & Services, Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
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23
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Miyamoto S, Ito J, Naruse H, Sugiura R, Yamamoto Y, Hatanaka K, Kinoshita K, Higashino M, Hayasaka S, Tsuchida N, Shimoyama N, Sakamoto N. Gastrointestinal: Endoscopic myotomy for a large rectal tumor with severe fibrosis after treatment of hemorrhoids. J Gastroenterol Hepatol 2020; 35:1097. [PMID: 31884711 DOI: 10.1111/jgh.14931] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 11/13/2019] [Indexed: 12/09/2022]
Affiliation(s)
- S Miyamoto
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan.,Department of Gastroenterology and Hepatology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - J Ito
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - H Naruse
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - R Sugiura
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan.,Department of Gastroenterology and Hepatology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - Y Yamamoto
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - K Hatanaka
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - K Kinoshita
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - M Higashino
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - S Hayasaka
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - N Tsuchida
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - N Shimoyama
- Department of Pathology, Hakodate Municipal Hospital, Hakodate, Japan
| | - N Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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24
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Inoue S, Hayashi T, Hieda K, Miyamoto S, Fujii S, Sekino Y, Kitano H, Ikeda K, Goto K, Teishima J, Matsubara A. Longitudinal analysis of conventional laparoscopic, posterior retroperitoneoscopic, and laparoendoscopic single-site adrenalectomy regarding cosmesis and satisfaction outcomes. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)33186-4] [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: 11/16/2022] Open
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25
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Sugiura R, Kinoshita K, Naruse H, Yamamoto Y, Hatanaka K, Ito J, Miyamoto S, Higashino M, Hayasaka S, Tsuchida N, Nakanishi K, Ueki S, Umehara M, Shimoyama N, Mitsuhashi T, Sakamoto N. Hepatobiliary and Pancreatic: Hemosuccus pancreaticus due to an intraductal papillary mucinous neoplasm: A rare cause of obscure gastrointestinal bleeding. J Gastroenterol Hepatol 2020; 35:363. [PMID: 31958167 DOI: 10.1111/jgh.14881] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 09/15/2019] [Indexed: 12/13/2022]
Affiliation(s)
- R Sugiura
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan.,Department of Gastroenterology and Hepatology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
| | - K Kinoshita
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - H Naruse
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - Y Yamamoto
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - K Hatanaka
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - J Ito
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - S Miyamoto
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - M Higashino
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - S Hayasaka
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - N Tsuchida
- Department of Gastroenterology and Hepatology, Hakodate Municipal Hospital, Hakodate, Japan
| | - K Nakanishi
- Department of Gastrointestinal Surgery, Hakodate Municipal Hospital, Hakodate, Japan
| | - S Ueki
- Department of Gastrointestinal Surgery, Hakodate Municipal Hospital, Hakodate, Japan
| | - M Umehara
- Department of Gastrointestinal Surgery, Hakodate Municipal Hospital, Hakodate, Japan
| | - N Shimoyama
- Department of Pathology, Hakodate Municipal Hospital, Hakodate, Japan
| | - T Mitsuhashi
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - N Sakamoto
- Department of Gastroenterology and Hepatology, Hokkaido University Faculty of Medicine and Graduate School of Medicine, Sapporo, Japan
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26
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Itotani R, Matsumoto S, Udagawa H, Nishino K, Nakachi I, Miyamoto S, Hara S, Kuyama S, Ebi N, Tsubata Y, Shingyoji M, Kato T, Ohe Y, Nishi K, Hashimoto S, Goto K. A large scale prospective concordance study of oncogene driver detection between plasma- and tissue-based NGS analysis in advanced non-small cell lung cancer (NSCLC). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz260.079] [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: 11/14/2022] Open
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27
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Udagawa H, Matsumoto S, Ohe Y, Satouchi M, Furuya N, Kim Y, Seto T, Soejima K, Hayakawa D, Kato T, Miyamoto S, Ohashi K, Saeki S, Ohta H, Fujimoto D, Sekine A, Yoh K, Goto K. OA07.03 Clinical Outcome of Non-Small Cell Lung Cancer with EGFR/HER2 Exon 20 Insertions Identified in the LC-SCRUM-Japan. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.443] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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28
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Otani S, Yamada K, Miyamoto S, Azuma K, Ishii H, Bessho A, Hosokawa S, Kunitoh H, Miyazaki K, Tanaka H, Miura S, Aono H, Nakahara Y, Kusaka K, Hosomi Y, Hamada A, Okamoto H. MA21.11 A Multicenter Phase II Study of Low-Dose Erlotinib in Frail Patients with EGFR Mutation-Positive, Non-Small Cell Lung Cancer: TORG1425. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.681] [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: 10/25/2022]
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29
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Miyakoshi A, Funaki T, Fushimi Y, Kikuchi T, Kataoka H, Yoshida K, Mineharu Y, Takahashi JC, Miyamoto S. Identification of the Bleeding Point in Hemorrhagic Moyamoya Disease Using Fusion Images of Susceptibility-Weighted Imaging and Time-of-Flight MRA. AJNR Am J Neuroradiol 2019; 40:1674-1680. [PMID: 31515213 DOI: 10.3174/ajnr.a6207] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2019] [Accepted: 07/29/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE The location of intracerebral hemorrhage in Moyamoya disease is a prognostic factor for rebleeding and the degree of preventive effects obtainable with bypass surgery. We evaluated whether the bleeding point and responsible vessel were detectable using fusion images of SWI and time-of-flight MRA performed during chronic-phase hemorrhage. MATERIALS AND METHODS We retrospectively enrolled 42 patients with hemorrhagic Moyamoya disease (48 hemorrhagic events). Fusion images of SWI and MRA were made using workstations, and we defined the bleeding point as the point at which the signal of an abnormally extended artery on MRA overlapped the hypointense area on SWI. Two independent raters identified the bleeding point, and classified the location and responsible vessels. RESULTS The bleeding point was detectable at a frequency of 79.2% by rater 1. Agreement for the presence of a bleeding point was high (interrater κ = 0.83; 95% CI, 0.65-1; intrarater κ = 0.86; 95% CI, 0.68-1). The frequency of a periventricular location of the bleeding point was 65.8% by rater 1, and agreement on the location was again high (interrater κ = 0.92; 95% CI, 0.82-1; intrarater κ = 0.85; 95% CI, 0.72-0.99). The choroidal artery was the most frequent responsible vessel (57.9% by rater 1), and agreement on the responsible vessel was high (interrater κ = 0.84; 95% CI, 0.69-1; intrarater κ = 0.90; 95% CI, 0.78-1). CONCLUSIONS Detection of the bleeding point in hemorrhagic Moyamoya disease using SWI and MRA fusion images offers highly reproducible results.
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Affiliation(s)
- A Miyakoshi
- From the Departments of Neurosurgery (A.M., T.F., T.K., H.K., K.Y., Y.M, S.M.)
| | - T Funaki
- From the Departments of Neurosurgery (A.M., T.F., T.K., H.K., K.Y., Y.M, S.M.)
| | - Y Fushimi
- Diagnostic Imaging and Nuclear Medicine (Y.F.), Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - T Kikuchi
- From the Departments of Neurosurgery (A.M., T.F., T.K., H.K., K.Y., Y.M, S.M.)
| | - H Kataoka
- From the Departments of Neurosurgery (A.M., T.F., T.K., H.K., K.Y., Y.M, S.M.)
| | - K Yoshida
- From the Departments of Neurosurgery (A.M., T.F., T.K., H.K., K.Y., Y.M, S.M.)
| | - Y Mineharu
- From the Departments of Neurosurgery (A.M., T.F., T.K., H.K., K.Y., Y.M, S.M.)
| | - J C Takahashi
- Department of Neurosurgery (J.C.T.), National Cerebral and Cardiovascular Center, Osaka, Japan
| | - S Miyamoto
- From the Departments of Neurosurgery (A.M., T.F., T.K., H.K., K.Y., Y.M, S.M.)
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30
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Baptista MS, Alves MJM, Arantes GM, Armelin HA, Augusto O, Baldini RL, Basseres DS, Bechara EJH, Bruni-Cardoso A, Chaimovich H, Colepicolo Neto P, Colli W, Cuccovia IM, Da-Silva AM, Di Mascio P, Farah SC, Ferreira C, Forti FL, Giordano RJ, Gomes SL, Gueiros Filho FJ, Hoch NC, Hotta CT, Labriola L, Lameu C, Machini MT, Malnic B, Marana SR, Medeiros MHG, Meotti FC, Miyamoto S, Oliveira CC, Souza-Pinto NC, Reis EM, Ronsein GE, Salinas RK, Schechtman D, Schreier S, Setubal JC, Sogayar MC, Souza GM, Terra WR, Truzzi DR, Ulrich H, Verjovski-Almeida S, Winck FV, Zingales B, Kowaltowski AJ. Where do we aspire to publish? A position paper on scientific communication in biochemistry and molecular biology. ACTA ACUST UNITED AC 2019; 52:e8935. [PMID: 31482979 PMCID: PMC6719344 DOI: 10.1590/1414-431x20198935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 07/19/2019] [Indexed: 11/21/2022]
Abstract
The scientific publication landscape is changing quickly, with an enormous increase in options and models. Articles can be published in a complex variety of journals that differ in their presentation format (online-only or in-print), editorial organizations that maintain them (commercial and/or society-based), editorial handling (academic or professional editors), editorial board composition (academic or professional), payment options to cover editorial costs (open access or pay-to-read), indexation, visibility, branding, and other aspects. Additionally, online submissions of non-revised versions of manuscripts prior to seeking publication in a peer-reviewed journal (a practice known as pre-printing) are a growing trend in biological sciences. In this changing landscape, researchers in biochemistry and molecular biology must re-think their priorities in terms of scientific output dissemination. The evaluation processes and institutional funding for scientific publications should also be revised accordingly. This article presents the results of discussions within the Department of Biochemistry, University of São Paulo, on this subject.
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Affiliation(s)
- M S Baptista
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M J M Alves
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - G M Arantes
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - H A Armelin
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - O Augusto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R L Baldini
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - D S Basseres
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - E J H Bechara
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A Bruni-Cardoso
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - H Chaimovich
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - P Colepicolo Neto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - W Colli
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - I M Cuccovia
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A M Da-Silva
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - P Di Mascio
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S C Farah
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C Ferreira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F L Forti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R J Giordano
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S L Gomes
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F J Gueiros Filho
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - N C Hoch
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C T Hotta
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - L Labriola
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C Lameu
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M T Machini
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - B Malnic
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S R Marana
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M H G Medeiros
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F C Meotti
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S Miyamoto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - C C Oliveira
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - N C Souza-Pinto
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - E M Reis
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - G E Ronsein
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - R K Salinas
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - D Schechtman
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S Schreier
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - J C Setubal
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - M C Sogayar
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - G M Souza
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - W R Terra
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - D R Truzzi
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - H Ulrich
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - S Verjovski-Almeida
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - F V Winck
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - B Zingales
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
| | - A J Kowaltowski
- Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, São Paulo, SP, Brasil
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Miyamoto S, Nakashima M, Ohashi T, Hiraide T, Kurosawa K, Yamamoto T, Takanashi J, Osaka H, Inoue K, Miyazaki T, Wada Y, Okamoto N, Saitsu H. A case of de novo splice site variant in SLC35A2 showing developmental delays, spastic paraplegia, and delayed myelination. Mol Genet Genomic Med 2019; 7:e814. [PMID: 31231989 PMCID: PMC6687661 DOI: 10.1002/mgg3.814] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Revised: 05/30/2019] [Accepted: 05/31/2019] [Indexed: 01/03/2023] Open
Abstract
Background Congenital disorders of glycosylation (CDGs) are genetic diseases caused by pathogenic variants of genes involved in protein or lipid glycosylation. De novo variants in the SLC35A2 gene, which encodes a UDP‐galactose transporter, are responsible for CDGs with an X‐linked dominant manner. Common symptoms related to SLC35A2 variants include epilepsy, psychomotor developmental delay, hypotonia, abnormal facial and skeletal features, and various magnetic resonance imaging (MRI) findings. Methods Whole‐exome sequencing was performed on the patient's DNA, and candidate variants were confirmed by Sanger sequencing. cDNA analysis was performed to assess the effect of the splice site variant using peripheral leukocytes. The X‐chromosome inactivation pattern was studied using the human androgen receptor assay. Results We identified a de novo splice site variant in SLC35A2 (NM_005660.2: c.274+1G>A) in a female patient who showed severe developmental delay, spastic paraplegia, mild cerebral atrophy, and delayed myelination on MRI, but no seizures. The variant led to an aberrant splicing resulting in an in‐frame 33‐bp insertion, which caused an 11‐amino acid insertion in the presumptive cytoplasmic loop. X‐inactivation pattern was random. Partial loss of galactose and sialic acid of the N‐linked glycans of serum transferrin was observed. Conclusion This case would expand the phenotypic spectrum of SLC35A2‐related disorders to delayed myelination with spasticity and no seizures.
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Affiliation(s)
- Sachiko Miyamoto
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Mitsuko Nakashima
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Tsukasa Ohashi
- Department of Pediatrics, Niigata University Medical and Dental Hospital, Niigata, Japan
| | - Takuya Hiraide
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Kenji Kurosawa
- Division of Medical Genetics, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Toshiyuki Yamamoto
- Tokyo Women's Medical University Institute for Integrated Medical Sciences, Tokyo, Japan
| | - Junichi Takanashi
- Department of Pediatrics and Pediatric Neurology, Tokyo Women's Medical University, Yachiyo Medical Center, Yachiyo, Japan
| | - Hitoshi Osaka
- Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - Ken Inoue
- Department of Mental Retardation & Birth Defect Research, National Institute of Neuroscience, National Center of Neurology & Psychiatry, Japan
| | - Takehiro Miyazaki
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Yoshinao Wada
- Department of Molecular Medicine, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Nobuhiko Okamoto
- Department of Molecular Medicine, Osaka Women's and Children's Hospital, Osaka, Japan.,Department of Medical Genetics, Osaka Women's and Children's Hospital, Osaka, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
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Miyamoto S, Tokkito T, Bessho A, Fukamatsu N, Kunitoh H, Ishii M, Tanaka H, Aono H, Fukui T, Kusaka K, Hosomi Y, Hamada A, Yamada K, Okamoto H. ABCB1 genetic polymorphism and pharmacokinetic analysis of low dose erlotinib in frail patients with EGFR mutation (mt)-positive, non-small cell lung cancer: TORG1425. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.047] [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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33
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Di Mascio P, Scalfo A, Miyamoto S, Prado F, Medeiros M. Singlet molecular oxygen generated by cholesterol, oleic, linoleic hydroperoxides with nitronium ion. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.864] [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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Affiliation(s)
| | - S. Miyamoto
- Texas A&M University, Agricultural Research Center; El Paso Texas
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Suetomi T, Willeford A, Miyamoto S, Brown JH. P1797Calcium/calmodulin-dependent protein kinase II (CaMKII) initiates inflammation, inflammasome activation and immune cell infiltration in response to pressure overload through signaling in cardiomyocyte. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy565.p1797] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- T Suetomi
- University of San Diego, La Jolla, United States of America
| | - A Willeford
- University of San Diego, La Jolla, United States of America
| | - S Miyamoto
- University of San Diego, La Jolla, United States of America
| | - J H Brown
- University of San Diego, La Jolla, United States of America
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Abe I, Teshima Y, Miyamoto S, Takahashi N. 6015Profile of pro-inflammatory cytokines in epicardial adipose tissue in patients with atrial fibrillation: association with atrial myocardial fibrosis. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.6015] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- I Abe
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - Y Teshima
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
| | - S Miyamoto
- Faculty of Medicine, Oita University, Department of Cardiovascular Surgery, Oita, Japan
| | - N Takahashi
- Faculty of Medicine, Oita University, Department of Cardiology and Clinical Examination, Oita, Japan
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Tanaka H, Nankaku M, Nishikawa T, Hosoe T, Yonezawa H, Mori H, Kikuchi T, Nishi H, Miyamoto S, Ikeguchi R, Matsuda S. Effects of gait training with using HAL® on gait functions of chronic stroke patients. Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1166] [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: 11/16/2022]
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Affiliation(s)
- Y Nishikawa
- Department of Clinical Oncology, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan; Department of Health Informatics, Kyoto University School of Public Health, Yoshida-Konoe, Sakyo-ku, Kyoto 606-8501, Japan
| | - H Yokoi
- Department of Nephrology, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - T Sakurai
- Department of Diagnostic Pathology, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - T Horimatsu
- Department of Clinical Oncology, Kyoto University Hospital, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
| | - S Miyamoto
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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Sakata A, Okada T, Yamamoto Y, Fushimi Y, Dodo T, Arakawa Y, Mineharu Y, Schmitt B, Miyamoto S, Togashi K. Addition of Amide Proton Transfer Imaging to FDG-PET/CT Improves Diagnostic Accuracy in Glioma Grading: A Preliminary Study Using the Continuous Net Reclassification Analysis. AJNR Am J Neuroradiol 2018; 39:265-272. [PMID: 29301781 DOI: 10.3174/ajnr.a5503] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Accepted: 10/20/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Amide proton transfer imaging has been successfully applied to brain tumors, however, the relationships between amide proton transfer and other quantitative imaging values have yet to be investigated. The aim was to examine the additive value of amide proton transfer imaging alongside [18F] FDG-PET and DWI for preoperative grading of gliomas. MATERIALS AND METHODS Forty-nine patients with newly diagnosed gliomas were included in this retrospective study. All patients had undergone MR imaging, including DWI and amide proton transfer imaging on 3T scanners, and [18F] FDG-PET. Logistic regression analyses were conducted to examine the relationship between each imaging parameter and the presence of high-grade (grade III and/or IV) glioma. These parameters included the tumor-to-normal ratio of FDG uptake, minimum ADC, mean amide proton transfer value, and their combinations. In each model, the overall discriminative power for the detection of high-grade glioma was assessed with receiver operating characteristic curve analysis. Additive information from minimum ADC and mean amide proton transfer was also evaluated by continuous net reclassification improvement. P < .05 was considered significant. RESULTS Tumor-to-normal ratio, minimum ADC, and mean amide proton transfer demonstrated comparable diagnostic accuracy in differentiating high-grade from low-grade gliomas. When mean amide proton transfer was combined with the tumor-to-normal ratio, the continuous net reclassification improvement was 0.64 (95% CI, 0.036-1.24; P = .04) for diagnosing high-grade glioma and 0.95 (95% CI, 0.39-1.52; P = .001) for diagnosing glioblastoma. When minimum ADC was combined with the tumor-to-normal ratio, the continuous net reclassification improvement was 0.43 (95% CI, -0.17-1.04; P = .16) for diagnosing high-grade glioma, and 1.36 (95% CI, 0.79-1.92; P < .001) for diagnosing glioblastoma. CONCLUSIONS Addition of amide proton transfer imaging to FDG-PET/CT may improve the ability to differentiate high-grade from low-grade gliomas.
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Affiliation(s)
- A Sakata
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
| | - T Okada
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.) .,Brain Research Center (T.O.)
| | - Y Yamamoto
- Department of Healthcare Epidemiology (Y.Y.), School of Public Health, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Y Fushimi
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
| | - T Dodo
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
| | - Y Arakawa
- Department of Neurosurgery (Y.A., Y.M., S.M.)
| | - Y Mineharu
- Department of Neurosurgery (Y.A., Y.M., S.M.)
| | - B Schmitt
- Magnetic Resonance (B.S.), Siemens Healthcare, Bayswater, Australia
| | - S Miyamoto
- Department of Neurosurgery (Y.A., Y.M., S.M.)
| | - K Togashi
- From the Department of Diagnostic Imaging and Nuclear Medicine (A.S., T.O., Y.F., T.D., K.T.)
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Takemura T, Takada A, Kishimoto T, Komura S, Kubo H, Matsuoka Y, Miuchi K, Miyamoto S, Mizumoto T, Mizumura Y, Motomura T, Nakamasu Y, Nakamura K, Oda M, Ohta K, Parker JD, Sawano T, Sonoda S, Tanimori T, Tomono D, Yoshikawa K. Development of the micro pixel chamber based on MEMS technology. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201817402010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Micro pixel chambers (μ-PIC) are gaseous two-dimensional imaging detectors originally manufactured using printed circuit board (PCB) technology. They are used in MeV gamma-ray astronomy, medicalimaging, neutron imaging, the search for dark matter, and dose monitoring. The position resolution of the present μ-PIC is approximately 120 μm (RMS), however some applications require a fine position resolution of less than 100 μm. To this end, we have started to develop a μ-PIC based on micro electro mechanical system (MEMS) technology, which provides better manufacturing accuracy than PCB technology. Our simulation predicted the gains of MEMS μ-PICs to be twice those of PCB μ-PICs at the same anode voltage. We manufactured two MEMS μ-PICs and tested them to study their behavior. In these experiments, we successfully operated the fabricatedMEMS μ-PICs and we achieved a maximum gain of approximately 7×103 and collected their energy spectra under irradiation of X-rays from 55Fe. However, the measured gains of the MEMS μ-PICs were less than half of the values predicted in the simulations. We postulated that the gains of the MEMS μ-PICs are diminished by the effect of the silicon used as a semiconducting substrate.
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Shimotake A, Matsumoto R, Kobayashi K, Kunieda T, Mikuni N, Miyamoto S, Takahashi R, Ikeda A. Functional mapping of praxis: Electrical cortical stimulation study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1935] [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: 10/18/2022]
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Takeyama H, Matsumoto R, Usami K, Shimotake A, Kunieda T, Miyamoto S, Takahashi R, Ikeda A. Higher-order motor cortices actively engage in motor inhibition: Cortical stimulation and event-related potentials as an evidence from subdural grid electrodes. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.422] [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: 10/18/2022]
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Takenobu Y, Yoshida K, Takagi Y, Miyamoto S. Usefulness and limitations of arterial spin labeling MRI for detection of hyperperfusion phenomenon arter cerebral revasucularization surgery. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2689] [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: 10/18/2022]
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Abe I, Teshima Y, Miyamoto S, Takahashi N. 977Infiltration of epicardial adipose tissue into atrial myocardium is associated with inflammatory atrial fibrosis via ANGPTL2-induced qualitative alteration of epicardial adipose tissue. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.977] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Seko Y, Kato T, Haruna T, Izumi T, Miyamoto S, Nakane E, Sasaki K, Funasako M, Inoko M. P3573Evaluation of the relationship between atrial fibrillation and left ventricular geometric patterns. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p3573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Seko Y, Kato T, Haruna T, Izumi T, Miyamoto S, Nakane E, Sasaki K, Funasako M, Inoko M. P4513Characteristics of ECG in Patients with hypertrophic cardiomyopathy. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Kato T, Sasaki K, Funasako M, Miyamoto S, Izumi T, Haruna T, Yaku H, Kawase Y, Yamamoto E, Tamaki Y, Inuzuka Y, Inoko M, Ozasa N, Kimura T. P5291Nutritional status in acute decompensated heart failure was closely linked to high in-hospital mortality (from the KCHF registry). Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p5291] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- T. Kato
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - K. Sasaki
- The Tazuke Kofukai Medical Research Institute, Kitano Hospital, Cardiovascular Center, Osaka, Japan
| | - M. Funasako
- The Tazuke Kofukai Medical Research Institute, Kitano Hospital, Cardiovascular Center, Osaka, Japan
| | - S. Miyamoto
- The Tazuke Kofukai Medical Research Institute, Kitano Hospital, Cardiovascular Center, Osaka, Japan
| | - T. Izumi
- The Tazuke Kofukai Medical Research Institute, Kitano Hospital, Cardiovascular Center, Osaka, Japan
| | - T. Haruna
- The Tazuke Kofukai Medical Research Institute, Kitano Hospital, Cardiovascular Center, Osaka, Japan
| | - H. Yaku
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - Y. Kawase
- Kurashiki Central Hospital, Kurashiki, Japan
| | - E. Yamamoto
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - Y. Tamaki
- Tenri Hospital, Department of Cardiology, Tenri, Japan
| | - Y. Inuzuka
- Shiga Medical Center for Adults, Department of Cardiology, Moriyama, Japan
| | - M. Inoko
- The Tazuke Kofukai Medical Research Institute, Kitano Hospital, Cardiovascular Center, Osaka, Japan
| | - N. Ozasa
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
| | - T. Kimura
- Kyoto University Graduate School of Medicine, Department of Cardiovascular Medicine, Kyoto, Japan
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Seko Y, Kato T, Funasako M, Sasaki K, Nakane E, Miyamoto S, Izumi T, Haruna T, Inoko M. P4396Characteristics of patients with small left ventricular diastolic dimension. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx504.p4396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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49
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Fukai Y, Shimizu A, Miyamoto S. Calculations of Flux Distributions in a Boiling Water Reactor. NUCL SCI ENG 2017. [DOI: 10.13182/nse59-a28848] [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] [Indexed: 11/12/2022]
Affiliation(s)
- Y. Fukai
- Nippon Atomic Industry Group Company, Ltd., Tokyo, Japan
| | - A. Shimizu
- Nippon Atomic Industry Group Company, Ltd., Tokyo, Japan
| | - S. Miyamoto
- Nippon Atomic Industry Group Company, Ltd., Tokyo, Japan
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Tashiro K, Feng J, Wu SH, Mashiko T, Kanayama K, Narushima M, Uda H, Miyamoto S, Koshima I, Yoshimura K. Pathological changes of adipose tissue in secondary lymphoedema. Br J Dermatol 2017; 177:158-167. [PMID: 28000916 DOI: 10.1111/bjd.15238] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/06/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND The pathophysiology of lymphoedema is poorly understood. Current treatment options include compression therapy, resection, liposuction and lymphatic microsurgery, but determining the optimal treatment approach for each patient remains challenging. OBJECTIVES We characterized skin and adipose tissue alterations in the setting of secondary lymphoedema. METHODS Morphological and histopathological evaluations were conducted for 70 specimens collected from 26 female patients with lower-extremity secondary lymphoedema following surgical intervention for gynaecological cancers. Indocyanine green lymphography was performed for each patient to assess lymphoedema severity. RESULTS Macroscopic and ultrasound findings revealed that lymphoedema adipose tissue had larger lobules of adipose tissue, with these lobules surrounded by thick collagen fibres and interstitial lymphatic fluid. In lymphoedema specimens, adipocytes displayed hypertrophic changes and more collagen fibre deposits when examined using electron microscopy, whole-mount staining and immunohistochemistry. The number of capillary lymphatic channels was also found to be increased in the dermis of lymphoedema limbs. Crown-like structures (dead adipocytes surrounded by M1 macrophages) were less frequently seen in lymphoedema samples. Flow cytometry revealed that, among the cellular components of adipose tissue, adipose-derived stem/stromal cells and M2 macrophages were decreased in number in lymphoedema adipose tissue compared with normal controls. CONCLUSIONS These findings suggest that long-term lymphatic volume overload can induce chronic tissue inflammation, progressive fibrosis, impaired homeostasis, altered remodelling of adipose tissue, impaired regenerative capacity and immunological dysfunction. Further elucidation of the pathophysiological mechanisms underlying lymphoedema will lead to more reliable therapeutic strategies.
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Affiliation(s)
- K Tashiro
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan.,Department of Plastic Surgery, National Cancer Center, 5-1-1 Tsukiji, Chuo-Ku, Tokyo, 104-0045, Japan
| | - J Feng
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan.,Department of Plastic Surgery, Southern Medical University Nanfang Hospital, 1838 Guangzhou South Ave., Guangzhou, 510515, China
| | - S-H Wu
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - T Mashiko
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - K Kanayama
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - M Narushima
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - H Uda
- Department of Plastic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - S Miyamoto
- Department of Plastic Surgery, National Cancer Center, 5-1-1 Tsukiji, Chuo-Ku, Tokyo, 104-0045, Japan
| | - I Koshima
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan
| | - K Yoshimura
- Department of Plastic Surgery, University of Tokyo School of Medicine, 7-3-1 Hongo, Bunkyo-Ku, Tokyo, 113-8655, Japan.,Department of Plastic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
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