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Asami S, Uchino A, Natsuyama Y, Usami Y, Arai N, Suda S, Baba Y. Thyrolinguofacial trunk arising from the common carotid artery and diagnosed by computed tomography angiography. Surg Radiol Anat 2024; 46:659-663. [PMID: 38418595 DOI: 10.1007/s00276-024-03313-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 01/22/2024] [Indexed: 03/01/2024]
Abstract
PURPOSE Various variations in the head and neck vasculature have been reported. The purpose of this report is to describe an extremely rare case of thyrolinguofacial trunk (TLFT) arising from the common carotid artery (CCA). METHODS A 66-year-old woman with vertigo, dizziness, and heaviness in the head underwent computed tomography (CT) angiography of the neck and head region for evaluation of cerebrovascular diseases. RESULTS The TLFT originated from the anterior wall of the right CCA and was divided into the superior thyroid artery and linguofacial trunk (LFT). The LFT was divided into lingual and facial arteries. In addition, we observed fusiform dilatation of the intracranial right vertebral artery, which might have caused these symptoms. CONCLUSION The presence of a common trunk of the external carotid artery (ECA) branches increases the risk of complications such as bleeding and ischemia during treatment of the head and neck region, including chemoradiotherapy for oral bleeding and tongue cancer. Therefore, this is an area of significant interest across various medical specialties, including surgery, otolaryngology, and radiology. Understanding the diverse variations in the neck vasculature is expected to lead to a reduction in complications associated with various procedures.
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Affiliation(s)
- Shiho Asami
- Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Akira Uchino
- Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
- Department of Radiology, Saitama Sekishinkai Hospital, 2-37-20 Irumagawa, Sayama, Saitama, 350-1305, Japan.
| | - Yuki Natsuyama
- Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Yoko Usami
- Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Noriko Arai
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Satoshi Suda
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Yasutaka Baba
- Department of Diagnostic Radiology, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, 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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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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Seki M, Karaushi H, Arai N, Hayashi T, Mitsutake K. COVID-19 and Listeria Meningitis Treated by Ampicillin, Sulfamethoxazole/Trimethoprim and Meropenem. Infect Drug Resist 2023; 16:4289-4295. [PMID: 37424669 PMCID: PMC10328099 DOI: 10.2147/idr.s414879] [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: 04/19/2023] [Accepted: 06/29/2023] [Indexed: 07/11/2023] Open
Abstract
Background Secondary bacterial infection was initially rare in SARS-CoV-2 infectious disease (COVID-19) patients, but COVID-19-associated bacterial infectious diseases have recently been increasing. Furthermore, it might be difficult to distinguish COVID-19 from bacterial meningitis by the symptoms, and one might be uncertain about antibiotic therapy for Listeria meningitis infection-typically caused by eating contaminated food-in elderly persons and pregnant women. Case Report A 96-year-old woman who had been living alone was found to have SARS-CoV-2 infection in February 2023. She was admitted to our hospital with high fever and disturbance of consciousness and was started on treatment with remdesivir. Two days later, her consciousness was still disturbed, and she was found to have a stiff neck. In addition, increased white blood cell counts and C-reactive protein suggested bacterial infection. Therefore, a lumbar puncture was done, and Listeria monocytogenes was ultimately isolated from blood cultures and its genetic material was detected in cerebrospinal fluid. She had previously eaten refrigerated food and cheese products. Intravenous ampicillin 1.0 g 6×/day was started, but one week later, loss of consciousness continued, and the cerebrospinal findings were not improved, although nasal swab became negative for SARS-CoV-2. Intravenous sulfamethoxazole/trimethoprim (ST) 80/400 mg 3×/day was added, and her consciousness and fever improved by one week later. A drug rash appeared after ST was started, and she was switched to meropenem. Her condition finally improved. Conclusion COVID-19-associated secondary listeria infection was found in an elderly woman. She was treated with not only ampicillin, but also ST and meropenem. Meningitis caused by Listeria monocytogenes should be considered as a secondary complication and carefully treated with antibiotics during the period of the COVID-19 pandemic.
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Affiliation(s)
- Masafumi Seki
- Division of Infectious Diseases and Infection Control, Saitama Medical University International Medical Center, Hidaka City, Saitama, Japan
| | - Haruka Karaushi
- Division of Infectious Diseases and Infection Control, Saitama Medical University International Medical Center, Hidaka City, Saitama, Japan
| | - Noriko Arai
- Division of Neurology, Saitama Medical University International Medical Center, Hidaka City, Saitama, Japan
| | - Takeshi Hayashi
- Division of Neurology, Saitama Medical University International Medical Center, Hidaka City, Saitama, Japan
| | - Kotaro Mitsutake
- Division of Infectious Diseases and Infection Control, Saitama Medical University International Medical Center, Hidaka City, Saitama, Japan
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Hiramuki Y, Kure Y, Saito Y, Ogawa M, Ishikawa K, Mori-Yoshimura M, Oya Y, Takahashi Y, Kim DS, Arai N, Mori C, Matsumura T, Hamano T, Nakamura K, Ikezoe K, Hayashi S, Goto Y, Noguchi S, Nishino I. Simultaneous measurement of the size and methylation of chromosome 4qA-D4Z4 repeats in facioscapulohumeral muscular dystrophy by long-read sequencing. J Transl Med 2022; 20:517. [DOI: 10.1186/s12967-022-03743-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 10/30/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Facioscapulohumeral muscular dystrophy (FSHD) is an autosomal dominant muscular disorder characterized by asymmetric muscle wasting and weakness. FSHD can be subdivided into two types: FSHD1, caused by contraction of the D4Z4 repeat on chromosome 4q35, and FSHD2, caused by mild contraction of the D4Z4 repeat plus aberrant hypomethylation mediated by genetic variants in SMCHD1, DNMT3B, or LRIF1. Genetic diagnosis of FSHD is challenging because of the complex procedures required.
Methods
We applied Nanopore CRISPR/Cas9-targeted resequencing for the diagnosis of FSHD by simultaneous detection of D4Z4 repeat length and methylation status at nucleotide level in genetically-confirmed and suspected patients.
Results
We found significant hypomethylation of contracted 4q-D4Z4 repeats in FSHD1, and both 4q- and 10q-D4Z4 repeats in FSHD2. We also found that the hypomethylation in the contracted D4Z4 in FSHD1 is moderately correlated with patient phenotypes.
Conclusions
Our method contributes to the development for the diagnosis of FSHD using Nanopore long-read sequencing. This finding might give insight into the mechanisms by which repeat contraction causes disease pathogenesis.
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Murakami K, Hirata D, Haraguchi K, Arai N, Inoue K, Miyazaki Y, Funase K, Nakashige T, Teramoto A, Iwatate M, Hattori S, Fujita M, Sano W, Sano Y. Ultrasonic cleaning is effective in removing carbonized clots and tissue from the insulation‐tipped diathermic knife‐2. DEN Open 2022; 2:e101. [PMID: 35873510 PMCID: PMC9302054 DOI: 10.1002/deo2.101] [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] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 01/20/2022] [Accepted: 01/29/2022] [Indexed: 12/07/2022]
Abstract
Objectives Since carbonized clots and tissue (debris) tend to adhere firmly to the tip of the endoscopic submucosal dissection (ESD) knife as the procedure proceeds, manual removing the firm debris is often challenging and time‐consuming. Recently, effective ultrasonic cleaning for other medical devices has been reported. The aim of the present study was to clarify whether ultrasonic cleaning is effective in removing the debris on the insulation‐tipped diathermic (IT) knife‐2. Methods This study was an ex‐vivo experimental randomized study. A total of 40 IT knife‐2 knives with debris on their tip surfaces were prepared and randomly assigned to two groups (Group A and Group B). The knives in Group A were cleaned using the conventional scrubbing method for 30 s (conventional cleaning method), while those in Group B were cleaned using a combined method of scrubbing for 20 s and ultrasonic cleaning for 10 s (combined ultrasonic cleaning method). The tip electrode of the knife after cleaning was photographed under a microscope (40x). The 40 images of the knives were evaluated by independent three endoscopists and two clinical engineers using the five‐step evaluation criteria ranging from cleaning score 1 (dirty) to 5 (clean). Results The mean cleaning score of 3.78 (range: 2.33–4.67) in Group B was significantly higher than that of 1.68 (range: 1.00–2.83) in Group A. Conclusions The combined ultrasonic cleaning method could remove debris adhering to the IT knife‐2 more effectively than the conventional cleaning method. Ultrasonic cleaning may be applied for real‐world ESD.
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Affiliation(s)
- Kei Murakami
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Daizen Hirata
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
- Department of Gastroenterology and Hepatology Kindai University Osaka Japan
| | - Kengo Haraguchi
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Noriko Arai
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Koji Inoue
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Yuka Miyazaki
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Kimihiro Funase
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Tadao Nakashige
- Gastrointestinal Center Kishiwada Tokushukai Hospital Osaka Japan
| | - Akira Teramoto
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Mineo Iwatate
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Santa Hattori
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Mikio Fujita
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Wataru Sano
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
| | - Yasushi Sano
- Gastrointestinal Center and Institute of Minimally‐invasive Endoscopic Care Sano Hospital Hyogo Japan
- Kansai Medical University Osaka Japan
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Deguchi I, Osada T, Arai N, Takahashi S. Differences in oral anticoagulant prescriptions between specialists and non-specialists in patients with cardioembolic stroke caused by non-valvular atrial fibrillation. Heart Vessels 2021; 37:867-874. [PMID: 34797401 DOI: 10.1007/s00380-021-01984-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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 11/05/2021] [Indexed: 11/30/2022]
Abstract
Atrial fibrillation (AF) is a common disease encountered in daily practice; however, few patients with AF received oral anticoagulant (OAC) therapy. This study focused on differences in OAC prescriptions and influencing factors between specialists (neurological and cardiovascular) and non-specialists. A retrospective comparative analysis was conducted on 480 patients with acute cardioembolic stroke caused by non-valvular AF who were admitted to our hospital between January 1, 2015, and December 31, 2020. All patients had visited our hospital or other hospitals for their underlying diseases. Overall, 232 (specialist group SG) and 248 patients (non-specialist group NSG) were examined by specialists and non-specialists, respectively. The NSG had a significantly lower percentage of OAC prescriptions on admission than the SG (P < 0.01), even after propensity score matching. Factors influencing OAC prescription in the SG were age, hypertension, paroxysmal AF, dementia, CHADS2 score, and antiplatelet drug use, while those in the NSG were a history of cerebral infarction, paroxysmal AF, dementia, and antiplatelet drug use [SG: age, odds ratio (OR) 0.919, 95% confidence interval (CI) 0.865-0.976; hypertension, OR 0.266, 95% CI 0.099-0.713; paroxysmal AF, OR 0.189, 95% CI 0.055-0.658; dementia, OR 0.253, 95% CI 0.085-0.758; CHADS2 score, OR 2.833, 95% CI 1.682-4.942; and antiplatelet drug use, OR 0.072, 95% CI 0.025-0.206; NSG: cerebral infarction, OR 5.940, 95% CI 1.581-22.309; paroxysmal AF, OR 0.077, 95% CI 0.010-0.623; dementia, OR 0.077, 95% CI 0.014-0.438; and antiplatelet drug use, OR 0.024, 95% CI 0.004-0.152]. In conclusion, the OAC prescription rate was higher in patients with non-valvular AF whose family physicians were specialists at the time of cerebral infarction onset. In addition, in the SG, advanced age and hypertension were associated with not prescribing OAC, whereas a higher CHADS2 score was associated with the prescription of OACs. In the NSG, a history of cerebral infarction was associated with the prescription of OACs. Further, paroxysmal AF, antiplatelet drug use, and dementia were associated with non-OAC therapy in both the groups.
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Affiliation(s)
- Ichiro Deguchi
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan.
| | - Takashi Osada
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Noriko Arai
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
| | - Shinichi Takahashi
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, 1397-1 Yamane, Hidaka, Saitama, 350-1298, Japan
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Yoshikawa S, Kamide T, Kasakura S, Arai N, Osada T, Mouri A, Hamada M, Kawasaki T, Takao M, Kohyama S. A case of cerebral infarction due to pleomorphic carcinoma of the lung. Surg Neurol Int 2020; 11:217. [PMID: 32874720 PMCID: PMC7451184 DOI: 10.25259/sni_37_2020] [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: 01/27/2020] [Accepted: 05/13/2020] [Indexed: 11/30/2022] Open
Abstract
Background: With the increase in endovascular treatment, reports of embolism other than thrombus are scattered, but intracranial tumorigenic embolism is rare and difficult to diagnose. Here, we describe a case of a tumorigenic embolism in a patient with lung cancer whose invasion into the vascular system was not detected on preoperative whole-body imaging. Case Description: A 66-year-old man who was hospitalized to undergo radiotherapy for pulmonary carcinoma suddenly developed left hemiplegia. He exhibited atrial fibrillation, and emergent radiographic examination revealed a right middle cerebral artery occlusion. Urgent mechanical embolectomy was performed, with successful revascularization. The excised embolus had a unique morphology and was pathologically diagnosed as a cerebral embolism caused by pleomorphic pulmonary carcinoma. Conclusion: Tumor-derived cerebral embolism is extremely rare, but it is necessary to consider it as a potential source of embolism during differential diagnosis in patients with malignant tumors.
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Affiliation(s)
- Shinichiro Yoshikawa
- Stroke Center, Department of Cerebrovascular Surgery, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan.,Stroke Center, Department of Endovascular Neurosurgery, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Tomoya Kamide
- Stroke Center, Department of Cerebrovascular Surgery, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Shigen Kasakura
- Stroke Center, Department of Endovascular Neurosurgery, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Noriko Arai
- Stroke Center, Department of Neurology, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Takashi Osada
- Stroke Center, Department of Neurology, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Atsuto Mouri
- Department of Respiratory Medicine, Comprehensive Cancer Center, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Mei Hamada
- Department of Pathology, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Tomonori Kawasaki
- Department of Pathology, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Masaki Takao
- Stroke Center, Department of Neurology, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
| | - Shinya Kohyama
- Stroke Center, Department of Endovascular Neurosurgery, Saitama Medical University International Medical Center, Hidaka, Saitama, Japan
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9
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Affiliation(s)
- N Arai
- Department of RadiologyNagoya City University HospitalNagoya, Japan
| | - H Kan
- Radiological and Medical Laboratory SciencesNagoya University Graduate School of MedicineNagoya, Japan
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10
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Arai N, Kan H, Ogawa M, Uchida Y, Takizawa M, Omori K, Miyati T, Kasai H, Kunitomo H, Shibamoto Y. Visualization of Nigrosome 1 from the Viewpoint of Anatomic Structure. AJNR Am J Neuroradiol 2019; 41:86-91. [PMID: 31806600 DOI: 10.3174/ajnr.a6338] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 10/10/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Parkinson disease is related to neurodegeneration and iron deposition in the substantia nigra pars compacta and nigrosome 1. However, visualization of nigrosome 1 via MR imaging is poor owing to the bilateral asymmetry, regardless of whether it is healthy. We focused on the magic angle and susceptibility effect and evaluated the anatomic slant structure of nigrosome 1 by tilting subjects' heads in the B0 direction. MATERIALS AND METHODS To investigate the effectiveness of the magic angle, we tilted the volunteers' heads to the right and left in the B0 direction or not at all for evaluating correlations between the degree of head tilting and visualization of the right nigrosome 1 and left nigrosome 1 using 3D spoiled gradient-echo sequences with multiecho acquisitions. We evaluated the susceptibility of nigrosome 1 and the local field using quantitative susceptibility mapping to assess static magnetic field inhomogeneity. RESULTS The heads tilted to the right and left showed significantly higher contrasts of nigrosome 1 and the substantia nigra pars compacta than the nontilted heads. No significant differences were observed in the visualization and susceptibility between the right nigrosome 1 and left nigrosome 1 for each head tilt. The effect of the magic angle was remarkable in the nontilted heads. This finding was supported by quantitative susceptibility mapping because the anatomic slant structure of nigrosome 1 was coherent between the axis of nigrosome 1 and the magic angle. CONCLUSIONS The asymmetric visualization of nigrosome 1 is affected by the magic angle and susceptibility. The anatomic slant structure of nigrosome 1 causes these challenges in visualization.
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Affiliation(s)
- N Arai
- From the Department of Radiology (N.A., H. Kasai, H. Kunitomo), Nagoya City University Hospital, Nagoya, Japan
| | - H Kan
- Radiological and Medical Laboratory Sciences (H. Kan), Nagoya University Graduate School of Medicine, Nagoya, Japan.,Departments of Radiology (H. Kan, M.O., Y.S.)
| | - M Ogawa
- Departments of Radiology (H. Kan, M.O., Y.S.)
| | - Y Uchida
- Neurology (Y.U.), Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - M Takizawa
- Healthcare Business Unit (M.T., K.O.), Hitachi Ltd, Tokyo, Japan
| | - K Omori
- Healthcare Business Unit (M.T., K.O.), Hitachi Ltd, Tokyo, Japan
| | - T Miyati
- Division of Health Sciences, Graduate School of Medical Science (T.M.), Kanazawa University, Kanazawa, Japan
| | - H Kasai
- From the Department of Radiology (N.A., H. Kasai, H. Kunitomo), Nagoya City University Hospital, Nagoya, Japan
| | - H Kunitomo
- From the Department of Radiology (N.A., H. Kasai, H. Kunitomo), Nagoya City University Hospital, Nagoya, Japan
| | - Y Shibamoto
- Departments of Radiology (H. Kan, M.O., Y.S.)
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Kurohara K, Tomomatsu N, Nakakuki K, Sakuma T, Arai N, Yoda T. Treatment of refractory non-union after maxillary osteotomy: A case report. Journal of Stomatology, Oral and Maxillofacial Surgery 2019; 120:493-496. [DOI: 10.1016/j.jormas.2018.11.017] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 11/26/2018] [Accepted: 11/28/2018] [Indexed: 11/27/2022]
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Abstract
Postural tachycardia syndrome (POTS) can cause orthostatic headache. However, it is difficult to differentiate POTS from spontaneous intracranial hypotension (SIH) caused by cerebrospinal fluid (CSF) leaks. We herein report a 53-year-old woman who presented with SIH associated with POTS. A cervicothoracic and lumbar epidural blood patch rapidly improved not only the headache but also the orthostatic tachycardia, suggesting POTS secondary to SIH. This case suggests that a CSF leak can cause secondary POTS. Therefore, POTS should be considered in patients with orthostatic headaches, even in the presence of a CSF leak.
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Affiliation(s)
- Yuji Kato
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, Japan
| | - Takeshi Hayashi
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, Japan
| | - Noriko Arai
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, Japan
| | - Norio Tanahashi
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, Japan
| | | | - Masaki Takao
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center, Japan
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Arai N, Deguchi I, Hayashi T, Tanahashi N, Takao M. [Recombinant tissue plasminogen activator therapy for acute ischemic stroke in older patients]. Nihon Ronen Igakkai Zasshi 2018; 55:632-639. [PMID: 30542029 DOI: 10.3143/geriatrics.55.632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
AIM As the number of aged stroke patients increases in Japan, the proportion of older patients who receive recombinant tissue plasminogen activator (rt-PA, 0.6 mg/kg) is also rising. However, the Japanese stroke guideline indicates that rt-PA therapy must be administered very carefully in older patients (i.e. ≥81 years of age) because of serious complications after the therapy. We retrospectively assessed the clinical outcomes of rt-PA therapy in older patients. METHODS This study included 321 patients who received rt-PA therapy for acute cerebral infarction at our hospital between April 2007 and April 2017. The outcomes (modified Rankin Scale [mRS] score at 3 months after treatment) and symptomatic intracerebral hemorrhaging (sICH) were compared and analyzed between patients ≥81 years of age (group A) and those <81 years of age (group B). In addition, propensity score matching was performed for the factors shown to have significant differences by a univariate analysis in order to adjust for confounding factors, and the outcomes were compared. RESULTS There were 58 patients in group A (18.1%) and 263 patients in group B (81.9%). The rate of favorable outcomes (mRS 0-1) was lower in group A (12.1%) than in group B (44.1%) (P<0.01). The mortality rate was higher in group A (17.2%) than in group B (4.6%) (P=0.002). No marked differences were observed between the 2 groups regarding the rate of sICH (group A, 3.4%; group B, 3.0%; P=1.00). After propensity score matching, the proportion of patients with favorable outcomes was significantly lower in group A (13.2%) than in group B (36.8%) (P=0.032). There were no marked differences in the mortality rates between the groups (group A, 17.2%; group B, 4.6%) (P=0.200), and no patients in either group had sICH. CONCLUSION No marked differences in the incidence of ICH were observed between the older and younger groups receiving intravenous rt-PA therapy. However, in terms of efficacy, the proportion of patients with favorable outcomes was significantly lower in the older group than in the younger group.
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Affiliation(s)
- Noriko Arai
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center
| | - Ichiro Deguchi
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center
| | - Takeshi Hayashi
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center
| | - Norio Tanahashi
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center
| | - Masaki Takao
- Department of Neurology and Cerebrovascular Medicine, Saitama Medical University International Medical Center
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Arai N, Takimoto Y, Nakazawa E, Akabayashi A. Considerations on the Factors Influencing Living Kidney Donors' Autonomous Decision-Making: A Systematic Literature Review. Transplant Proc 2018; 50:3036-3044. [PMID: 30577163 DOI: 10.1016/j.transproceed.2018.06.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 06/19/2018] [Indexed: 10/28/2022]
Abstract
As outcomes of organ transplantation have improved with advances in medicine, managing medical ethics issues has become increasingly more important. Although a basic consensus has been formed on the respect of autonomy in decision-making by prospective donors regarding living kidney transplantation, concrete and practical measures at the clinical site are required to ensure donor autonomy. The aim of the study was to identify elements related to autonomy in the kidney donor decision-making process. METHODS We systematically collected relevant studies from multiple databases in and out of Japan and conducted qualitative and inductive analyses. RESULTS The identified elements were categorized into 12 subcategories and then regrouped into the following 4 categories based on the similarity of the contents: donor personality and values, inability to fully understand the implications of donation, possibility of direct pressure on donor's decision-making process, and donor's environment and situation. DISCUSSION The autonomy-related elements were highly diverse, including obvious pressure upon the donor and their values as well as influences from health care professionals. Some elements had room for change, such as the informed consent procedure, while some elements were unchangeable. Other elements were changeable by intervention, but discussion is required about the appropriateness of the intervention itself. Further, a classification of clinical approach was suggested by the development of an analytical framework using 2 axes of "site where the element arises" and "room for change" based on the practical viewpoint of clinical circumstances.
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Affiliation(s)
- N Arai
- Department of Biomedical Ethics, Graduate School of Medicine, University of Tokyo, Japan.
| | - Y Takimoto
- Department of Biomedical Ethics, Graduate School of Medicine, University of Tokyo, Japan
| | - E Nakazawa
- Department of Biomedical Ethics, Graduate School of Medicine, University of Tokyo, Japan
| | - A Akabayashi
- Department of Biomedical Ethics, Graduate School of Medicine, University of Tokyo, Japan
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Nogami K, Matsumoto T, Tabuchi Y, Soeda T, Arai N, Kitazawa T, Shima M. Modified clot waveform analysis to measure plasma coagulation potential in the presence of the anti-factor IXa/factor X bispecific antibody emicizumab. J Thromb Haemost 2018; 16:1078-1088. [PMID: 29645406 DOI: 10.1111/jth.14022] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Indexed: 01/10/2023]
Abstract
Essentials The activated partial prothrombin time (aPTT) cannot predict the activity of emicizumab (Emi). Adjusted clot waveform analyses using a prothrombin time (PT)/aPTT initiator were developed. Activity of Emi in the co-presence of factor VIII or bypassing agents was quantified. This assay is useful for assessing coagulation potential in Emi-treated hemophilia A. SUMMARY Background Emicizumab is an anti-activated factor IX/FX bispecific antibody that mimics activated FVIII cofactor function. Emicizumab does not require activation by thrombin, and its effect on shortening the activated partial thromboplastin time (APTT) is much greater than that of FVIII. Therefore, the APTT has limited utility in hemophilia A (HA) patients treated with emicizumab. Aim To evaluate the global coagulation potential of emicizumab. Methods Clot waveform analysis (CWA) with prothrombin time (PT)/APTT mixed reagents was used to define hemostatic monitoring protocols in HA patients. A modified parameter, adjusted-|min1| (Ad|min1|), was developed. Maximum and minimum percentage transmittance were defined as 100% and 0% in the precoagulation and postcoagulation phases, respectively. Ad|min1| was calculated as an index of the maximum velocity of the coagulation process. Results Ad|min1| obtained with mixed-trigger reagent (PT/APTT/buffer, 1 : 15 : 135) in the presence of emicizumab optimally corresponded to the conversion rate estimated in animals; 0.2-0.4 IU dL-1 equivalent FVIII per 1 μg mL-1 emicizumab). Ex vivo addition of emicizumab to HA plasma with or without inhibitors resulted in concentration-dependent increases in Ad|min1|, with some individual variations. The addition of various concentrations of FVIII to HA plasma mixed with emicizumab resulted in dose-dependent increases in Ad|min1|. Similarly, mixtures of activated prothrombin complex concentrate and emicizumab added to HA plasma resulted in dose-dependent increases in Ad|min1|. In contrast, enhanced coagulation potential appeared to be better defined by the clot time than by Ad|min1| in experiments using recombinant activated FVII. Conclusion The PT/APTT reagent-triggered adjusted CWA could provide a useful means of assessing global coagulation potential in emicizumab-treated HA patients, with enhanced activity neither masking nor being masked by FVIII or bypassing agents.
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Affiliation(s)
- K Nogami
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
| | - T Matsumoto
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
- Course of Hemophilia Treatment & Pathology, Nara Medical University, Kashihara, Nara, Japan
| | - Y Tabuchi
- Engineering Division, Sysmex Corporation, Kobe, Japan
| | - T Soeda
- Chugai Pharmaceutical Co., Gotenba, Japan
| | - N Arai
- Engineering Division, Sysmex Corporation, Kobe, Japan
| | - T Kitazawa
- Chugai Pharmaceutical Co., Gotenba, Japan
| | - M Shima
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan
- Course of Hemophilia Treatment & Pathology, Nara Medical University, Kashihara, Nara, Japan
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Arai N, Kato Y, Hayashi T, Kato R, Tanahashi N, Takao M. Ischemic stroke with cardiac pacemaker implantation: Comparison of physiologic and ventricular pacing modes. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2438] [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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Oyanagi K, Suzuki-Kouyama E, Yahikozawa H, Ohara S, Yamazaki M, Sakai T, Ushiyama M, Yasude T, Arai N, Ikeda S. Phosphorylated MTOR in the spinal anterior horn cells of patients with sporadic amyotrophic lateral sclerosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1995] [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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18
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Matsumoto T, Nogami K, Tabuchi Y, Yada K, Ogiwara K, Kurono H, Arai N, Shima M. Clot waveform analysis using CS-2000i™ distinguishes between very low and absent levels of factor VIII activity in patients with severe haemophilia A. Haemophilia 2017; 23:e427-e435. [DOI: 10.1111/hae.13266] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/10/2017] [Indexed: 11/28/2022]
Affiliation(s)
- T. Matsumoto
- Department of Pediatrics; Nara Medical University; Kashihara Nara Japan
- Course of Hemophilia Treatment & Pathology; Nara Medical University; Kashihara Nara Japan
| | - K. Nogami
- Department of Pediatrics; Nara Medical University; Kashihara Nara Japan
| | | | - K. Yada
- Department of Pediatrics; Nara Medical University; Kashihara Nara Japan
| | - K. Ogiwara
- Department of Pediatrics; Nara Medical University; Kashihara Nara Japan
| | - H. Kurono
- Sysmex Corporation; Kobe Hyogo Japan
| | - N. Arai
- Sysmex Corporation; Kobe Hyogo Japan
| | - M. Shima
- Department of Pediatrics; Nara Medical University; Kashihara Nara Japan
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Yamada S, Yamashita H, Taira K, Hida A, Arai N, Shimizu J, Miyaji Y, Sonoo M, Yashima A, Takahashi Y, Kaneko H. A case of inclusion body myositis complicated by microscopic polyangiitis. Scand J Rheumatol 2017; 47:243-245. [PMID: 28726537 DOI: 10.1080/03009742.2017.1334815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- S Yamada
- a Division of Rheumatic Diseases , National Center for Global Health and Medicine , Tokyo , Japan
| | - H Yamashita
- a Division of Rheumatic Diseases , National Center for Global Health and Medicine , Tokyo , Japan
| | - K Taira
- b Department of Neurology, Graduate School of Medicine , The University of Tokyo , Tokyo , Japan
| | - A Hida
- c Division of Neurology , National Center for Global Health and Medicine , Tokyo , Japan
| | - N Arai
- c Division of Neurology , National Center for Global Health and Medicine , Tokyo , Japan
| | - J Shimizu
- b Department of Neurology, Graduate School of Medicine , The University of Tokyo , Tokyo , Japan
| | - Y Miyaji
- d Department of Neurology , Teikyo University School of Medicine , Tokyo , Japan
| | - M Sonoo
- d Department of Neurology , Teikyo University School of Medicine , Tokyo , Japan
| | - A Yashima
- a Division of Rheumatic Diseases , National Center for Global Health and Medicine , Tokyo , Japan
| | - Y Takahashi
- a Division of Rheumatic Diseases , National Center for Global Health and Medicine , Tokyo , Japan
| | - H Kaneko
- a Division of Rheumatic Diseases , National Center for Global Health and Medicine , Tokyo , Japan
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Nishizawa H, Kono Y, Arai N, Shoji J, Mitamura H. Ventilatory and behavioural responses of the marbled sole Pseudopleuronectes yokohamae to progressive hypoxia. J Fish Biol 2017; 90:2363-2374. [PMID: 28386984 DOI: 10.1111/jfb.13319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/09/2017] [Indexed: 06/07/2023]
Abstract
This study identified ventilatory and behavioural responses in the marbled sole Pseudopleuronectes yokohamae under experimentally induced progressive decreases in dissolved oxygen (DO) levels. Ventilation frequency showed an increase with decreasing DO levels from normoxia to 2·75 mg O2 l-1 , followed by a decrease in ventilation frequency at decreased DO levels from 2·00 to 0·75 mg O2 l-1 . At DO levels below 2·00 mg l-1 , behaviours at the bottom were suppressed, whereas avoidance behaviours increased. A decrease in avoidance behaviours was observed from 1·00 to 0·75 mg O2 l-1 . Upside-down reversal and incapacitation at DO levels of 1·00-0·75 mg O2 l-1 suggested that sublethal effects on P. yokohamae were induced. The responses observed before the sublethal DO level could be interpreted as an effort to maintain oxygen uptake, reduce routine activities and facilitate avoidance. The observed DO level thresholds that induce behavioural responses, in addition to sublethal effects, indicate hypoxia-tolerance that is important for understanding the effects of hypoxia on coastal ecosystems.
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Affiliation(s)
- H Nishizawa
- Graduate School of Informatics, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
| | - Y Kono
- Faculty of Agriculture, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan
| | - N Arai
- Field Science Education and Research Center, Kyoto University, Kitashirakawa Oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan
- CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - J Shoji
- Graduate School of Biosphere Science, Hiroshima University, 1-4-4 Kagamiyama, Hiroshima, 739-8528, Japan
| | - H Mitamura
- Graduate School of Informatics, Kyoto University, Yoshida-Honmachi, Sakyo-ku, Kyoto, 606-8501, Japan
- CREST, JST, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
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Mayama N, Ishimura S, Arai N, Sasaki T, Hori Y, Uchida H. B21-O-11Quantitative and Qualitative Study of halogen and sodium doped Silicon by Atom Probe Tomography. Microscopy (Oxf) 2015. [DOI: 10.1093/jmicro/dfv140] [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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22
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Kodama S, Arai N, Yasaka K, Sousuke T. Lateralization of ictal tachycardia in patients with symptomatic epilepsy. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Kotoku J, Kumagai S, Haga A, Nakabayashi S, Arai N, Kobayashi T. TU-F-CAMPUS-J-03: Prediction of Respiratory Motion Using State Space Models. Med Phys 2015. [DOI: 10.1118/1.4925793] [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: 11/07/2022] Open
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Kasumi S, Murata T, Morita H, Inui M, Arai N. In Vitro Effects of a Phosphodiesterase Inhibitor Sildenafil on Cellular Motility of the Oral Malignant Melanoma Cells. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.171] [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: 10/24/2022]
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Nishizawa H, Narazaki T, Fukuoka T, Sato K, Hamabata T, Kinoshita M, Arai N. Juvenile green turtles on the northern edge of their range: mtDNA evidence of long-distance westward dispersals in the northern Pacific Ocean. ENDANGER SPECIES RES 2014. [DOI: 10.3354/esr00592] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Kotoku J, Nakabayashi S, Haga A, Kumagai S, Ishibashi T, Arai N, Saotome N, Kobayashi T. SU-E-J-128: 3D Surface Reconstruction of a Patient Using Epipolar Geometry. Med Phys 2014. [DOI: 10.1118/1.4888180] [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: 11/07/2022] Open
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Fusaro M, Giannini S, Miozzo D, Noale M, Tripepi G, Plebani M, Zaninotto M, Piccoli A, Vilei MT, Cristofaro R, Gallieni M, Hamamoto K, Inaba M, Okuno S, Imanishi Y, Ishimura E, Yamakawa T, Shoji S, Rothe HM, Eller P, Mayer G, Ketteler M, Kramar R, Shaheen F, Al Rukhaimi M, Alsahow A, Al-Ali F, Al Salmi I, Al Ghareeb S, Wang M, Bieber B, Robinson BM, Pisoni RL, Waniewski J, Debowska M, Wojcik-Zaluska A, Ksiazek A, Zaluska W, De Broe ME, Wilson RJ, Copley JB, Hiramtasu R, Ubara Y, Hoshino J, Takaichi K, Ghalli FG, Ghalli FG, Ibakkanavar R, Chess J, Roberts G, Riley S, Oliveira ASA, Carvalho CJB, Oliveira CBL, Pessoa CTBC, Leao RAS, Gueiros JEB, Gueiros APS, Okano K, Tsuruta Y, Hibi A, Tsukada M, Miwa N, Kimata N, Tsuchiya K, Akiba T, Nitta K, Mizobuchi M, Ogata H, Hosaka N, Sanada D, Arai N, Koiwa F, Kinugasa E, Shibata T, Akizawa T, Delanaye P, Krzesinski JM, Warling X, Moonen M, Smelten N, Medart L, Pottel H, Cavalier E, Delanaye P, Souberbielle JC, Gadisseur R, Dubois BE, Krzesinski JM, Cavalier E, Matias P, Jorge C, Mendes M, Azevedo A, Navarro D, Ferreira C, Amaral T, Aires I, Gil C, Ferreira A, Kikuchi H, Shimada H, Karasawa R, Suzuki M, An WS, Lee SM, Oh YJ, Son YK, De Paola L, Lombardi G, Panzino MT, Lombardi L, Reichel H, Hahn KM, Kohnle M, Guggenberger C, Delanna F, Sasaki N, Tsunoda M, Ikee R, Hashimoto N, Sola L, Leyun MN, Diaz JC, Sehabiague C, Gonzalez S, Alallon W, Bourbeau K, Lajoie C, Macway F, Fujii T, Suzuki S, Shinozaki M, Tanaka H, Klingele M, Seiler S, Poppleton A, Lepper P, Fliser D, Seidel R, Lun L, Liu D, Li X, Wei X, Miao J, Gao Z, Hu R, De Paola L, Lombardi G, Panzino MT, Lombardi L, Gros B, Galan A, Gonzalez-Parra E, Herrero JA, Echave M, Vegter S, Tolley K, Oyaguez I, Gutzwiller FS, Braunhofer PG, Szucs TD, Schwenkglenks M, Yilmaz VT, Ozdem S, Donmez L, Kocak H, Dinckan A, Cetinkaya R, Suleymanlar G, Ersoy FF. DIALYSIS BONE DISEASE. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Nishizawa H, Narazaki T, Fukuoka T, Sato K, Hamabata T, Kinoshita M, Arai N. Genetic composition of loggerhead turtle feeding aggregations: migration patterns in the North Pacific. ENDANGER SPECIES RES 2014. [DOI: 10.3354/esr00588] [Citation(s) in RCA: 12] [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: 11/23/2022] Open
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Noguchi M, Hiroaki T, Inoue S, Tomihara K, Arai N. Clinical application of hyperdry amniotic membrane to oral surgery. Int J Oral Maxillofac Surg 2013. [DOI: 10.1016/j.ijom.2013.07.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Takei R, Tomihara K, Arai N, Noguchi M. Central cystadenocarcinoma of the mandible. Int J Oral Maxillofac Surg 2012; 41:1463-6. [DOI: 10.1016/j.ijom.2012.04.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2011] [Revised: 02/22/2012] [Accepted: 04/05/2012] [Indexed: 11/16/2022]
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Arai N, Inoue S, Tomihara K, Tsuno H, Noguchi M. In vitro synergistic effects of zoledronic acid and calcium on viability of human epithelial cells. Oral Dis 2012; 19:200-5. [PMID: 22891943 DOI: 10.1111/j.1601-0825.2012.01971.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Revised: 06/06/2012] [Accepted: 06/19/2012] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Bisphosphonate-related osteonecrosis of the jaw is a common complication with defective wound healing of oral mucosa and frequently occurs in patients receiving zoledronic acid (ZA). The aim of this in vitro study was to investigate whether ZA has a cytotoxic effect at clinically relevant concentrations on epithelial cells when calcium conditions are altered. METHODS HaCaT human keratinocyte cells were treated with ZA in the presence of various concentrations of calcium. The concentrations of ZA included submicromolar ones, which are comparable with those found in the plasma of patients. Cell viability and apoptosis were assessed using MTT assay and annexin V flow cytometry. RESULTS Under standard culture conditions, cell growth was inhibited at 1 μM of ZA or above, but was unaffected by lower concentrations. However, when calcium concentrations were moderately increased, cell viability was decreased and apoptosis was induced at 0.2-0.3 μM of ZA. Moreover, a 50% reduction in serum in the hypercalcemic medium resulted in a significant decrease in cell viability at a much lower concentration (0.05 μM). CONCLUSION These results suggest that clinically relevant concentrations of ZA, which alone have little effects, can be toxic to the epithelial cells depending on the conditions of extracellular calcium.
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Affiliation(s)
- N Arai
- Department of Oral and Maxillofacial Surgery, Graduate School of Medicine and Pharmaceutical Sciences for Research, University of Toyama, Toyama, Japan
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Kotoku J, Kobayashi T, Arai N, Hatakeyama T, Kumagai S, Haga A. SU-E-T-56: Energy Spectrum Inference of X-Rays from a Linac. Med Phys 2012. [DOI: 10.1118/1.4735112] [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: 11/07/2022] Open
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Müller-Dahlhaus F, Möller C, Lu MK, Arai N, Fuhl A, Herrmann E, Ziemann U. Long-term and Time Dependent Homeostatic and Non-Homeostatic Metaplasticity in Human Motor Cortex. KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301524] [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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Nishizawa H, Abe O, Okuyama J, Kobayashi M, Arai N. Population genetic structure and implications for natal philopatry of nesting green turtles Chelonia mydas in the Yaeyama Islands, Japan. ENDANGER SPECIES RES 2011. [DOI: 10.3354/esr00355] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Kotoku J, Haga A, Saegusa S, Arai N, Kobayashi T, Waga K, Sakumi A, Itoh S, Kida S, Saotome N, Nakagawa K, Kanemitsu H, Ishioka K. MO-F-BRB-05: Dose Calculation of KV Cone-Beam CT by Use of Pinnacle. Med Phys 2011. [DOI: 10.1118/1.3613006] [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: 11/07/2022] Open
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36
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Akiba S, Arai N, Kusuoku H, Takagi Y, Hagura T, Takeuchi K, Fuji A. The N-terminal amino acid of apolipoprotein D is putatively covalently bound to 3-hydroxy-3-methyl hexanoic acid, a key odour compound in axillary sweat. Int J Cosmet Sci 2011; 33:283-6. [PMID: 21303379 DOI: 10.1111/j.1468-2494.2010.00636.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Axillary sweat is odourless when freshly collected at the surface of human skin, but it contains non-odoriferous precursors, which can be transformed into odorous substances by bacteria. E-3-methyl-2-hexanoic acid (3M2H) is one of the key odorous substances, but there are two contradictory reports about its precursor form. One report states that 3M2H linked non-covalently to apolipoprotein D (apoD) is the precursor, while a second report states that 3M2H-Gln identified in human axillary sweat is the precursor. Recently, 3-hydroxy-3-methyl hexanoic acid (HMHA) and 3-methyl-3-sulfanylhexane-1-ol (3M3T) have also been identified and reported as characteristic components found in apocrine sweat. To better understand the formation of axillary odours and the structural relationships between these compounds and apoD, we characterized the linkage between odorous substances and apoD in human axillary secretions. ApoD was purified from human axillary secretions collected from 50 healthy female volunteers and was then digested by trypsin and analysed by MALDI-TOF mass spectrometry. A Mascot search showed that 8 peaks identified in the trypsin-digested samples correspond to the masses calculated for theoretically digested apoD sequences and the purified protein was assigned as a precursor of apoD [Homo sapiens]. One spectrum corresponded to the theoretical peak of HMHA linked covalently to the N-terminal fragment of apoD. In contrast, no spectrum corresponded to the theoretical peak of a 3M2H adduct or to an unmodified N-terminal fragment of apoD. These results indicate a possibility that HMHA binds covalently to the N-terminal amino acid of apoD in human axillary secretions.
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Affiliation(s)
- S Akiba
- Kao Corporation, Tochigi Research Labs, 2606 Akabane, Ichikai, Haga, Tochigi 321-3497, Japan
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Sunami Y, Koide R, Arai N, Yamada M, Mizutani T, Oyanagi K. Radiologic and neuropathologic findings in patients in a family with dentatorubral-pallidoluysian atrophy. AJNR Am J Neuroradiol 2010; 32:109-14. [PMID: 20966051 DOI: 10.3174/ajnr.a2252] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We describe the cases of 2 patients, a father and his son, with DRPLA who underwent MR examinations prior to death and in whom postmortem examinations of the brain were obtained. MR imaging findings had the following features: 1) atrophy of the cerebellum and brain stem were the common findings, 2) high-signal-intensity lesions in the cerebral white matter and brain stem were observed on T2-weighted images in the patient with adult-onset DRPLA, 3) signal-intensity changes in the cerebral white matter were restricted to the periventricular white matter in the patient with juvenile-onset DRPLA, but these changes appear in the advanced stage, and 4) progressive cerebral atrophy was more marked in the patient with juvenile-onset DRPLA. In the patients with DRPLA, the abnormal high signal intensity of the cerebral white matter or brain stem on MR images reflect the loss of myelinated fibers. Cerebral atrophy mainly reflects atrophy of the neuropile.
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Affiliation(s)
- Y Sunami
- Department of Neurology, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
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Iwata N, Mori G, Arai N, Murakami Y, Takahashi A. Self-organized nanodot pattern fabrication using the reverse sputtering method. Nanotechnology 2010; 21:365301. [PMID: 20699486 DOI: 10.1088/0957-4484/21/36/365301] [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] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We demonstrate the synthesis of high density periodic 2D nanodot patterns using reverse sputtering in magnetron sputtering equipment on a single crystal Si substrate and sputter-deposited Si-thin film. In this etching process, a minute amount of Ta is supplied by DC sputtering or splashing from the substrate holder surface. STEM, EDX, TEM and XPS analyses confirmed preferentially localized Ta-silicide in the nanodots. The nanodot pattern formation is attributed to the repeated adsorption and desorption of Ta and Si molecules forming Ta-silicide, and its segregation with self-organization. We also discuss power and time dependence of the nanodot pattern sizes and hole structure formation as a side-effect. This simple process is conducted at room temperature and makes use of an extremely simple setup. Our result promises a significant improvement in the productivity of quantum dot devices and has the potential to trigger their worldwide spread.
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Affiliation(s)
- N Iwata
- Advanced Technology Research Laboratories, Sharp Corporation, Tenri, Nara, Japan.
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Kawabata Y, Okuyama J, Asami K, Okuzawa K, Yoseda K, Arai N. Effects of a tropical cyclone on the distribution of hatchery-reared black-spot tuskfish Choerodon schoenleinii determined by acoustic telemetry. J Fish Biol 2010; 77:627-642. [PMID: 20701644 DOI: 10.1111/j.1095-8649.2010.02702.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The effects of a tropical cyclone on the distribution of hatchery-reared black-spot tuskfish Choerodon schoenleinii were examined using acoustic telemetry. Nine fish were released in Urasoko Bay, Ishigaki Island, Japan, in September 2006, and another nine were released in June to July 2007, before a cyclone's passing through the area in September 2007. Data for the fish released in 2006 were used as the cyclone-inexperienced group to compare their distribution pattern to that of the 2007 cyclone-experienced group. Both groups of fish were monitored for up to 150 days. Of the nine fish in each group, four (44%) and two (22%) were monitored for over 150 days in the cyclone-inexperienced and the cyclone-experienced groups, respectively. Three of the five fish that had settled in the monitoring area left the area within a few days of the cyclone event. To estimate the time of disappearance of the fish, maximum wind speed during a period of 7 days (indicating the occurrence and intensity of the tropical cyclone), fish size and release year were evaluated as explanatory variables using a Cox proportional hazards model with Akaike's information criterion. The best predictive model included the effect of maximum wind speed. One fish that left the monitoring area displayed movement patterns related to strong winds, suggesting that wind-associated strong currents swept the fish away. No relationships were found between the movement patterns of the other two fish and any physical environmental data. The daily detection periods of one of the two fish gradually decreased after the cyclone hit, and this fish eventually left the monitoring area within 3 days, suggesting that it shifted to a habitat outside the monitoring area. These results indicate that tropical cyclones have both direct and indirect effects on the distribution of hatchery-reared C. schoenleinii.
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Affiliation(s)
- Y Kawabata
- Graduate School of Informatics, Kyoto University, Sakyo, Kyoto 606-8501, Japan.
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Omata T, Ohmori M, Arai N, Ogawa T. Genetically engineered mutant of the cyanobacterium Synechococcus PCC 7942 defective in nitrate transport. Proc Natl Acad Sci U S A 2010; 86:6612-6. [PMID: 16594065 PMCID: PMC297894 DOI: 10.1073/pnas.86.17.6612] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Nitrate-grown cells of Synechococcus PCC 7942 (Anacystis nidulans R2) contain a 45-kDa protein as a major protein in the cytoplasmic membrane but ammonium-grown cells lack it. A mutant (M45) was constructed by inactivating the gene encoding the 45-kDa protein. M45 did not grow under low concentrations of nitrate but high concentrations of nitrate could support its growth, with the optimal concentration being 40-70 mM. The growth rate of M45 was as high as that of the wild-type cells when ammonium was the nitrogen source. The 45-kDa protein was absent in M45 irrespective of the growth conditions. The activities of nitrate and nitrite reductases were higher in M45 than in wild type. The rate of nitrate-dependent O(2) evolution in wild type measured in the presence of L-methionine D,L-sulfoximine and D,L-glyceraldehyde showed saturation kinetics with respect to nitrate concentration in the external medium. The nitrate concentration required to produce half the maximal rate was 1 muM. In M45, the rate of nitrate-dependent O(2) evolution was nearly zero at nitrate concentrations <1 mM and was linearly increased as the concentration increased. The presumed absence of nitrate transport in M45 demonstrated by these results suggested that the 45-kDa protein is a nitrate transporter.
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Affiliation(s)
- T Omata
- Solar Energy Research Group, The Institute of Physical and Chemical Research, Wako, Saitama 351-01, Japan
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Müller-Dahlhaus F, Arai N, Bliem B, Lu MK, Ziemann U. Timing-specific associative plasticity between supplementary motor area and primary motor cortex in humans. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1250955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Okuyama J, Shimizu T, Abe O, Yoseda K, Arai N. Wild versus head-started hawksbill turtles Eretmochelys imbricata: post-release behavior and feeding adaptions. ENDANGER SPECIES RES 2010. [DOI: 10.3354/esr00250] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Shiomi K, Matsui R, Kakei A, Yamaguchi Y, Masuma R, Hatano H, Arai N, Isozaki M, Tanaka H, Kobayashi S, Turberg A, Omura S. Verticilide, a new ryanodine-binding inhibitor, produced by Verticillium sp. FKI-1033. J Antibiot (Tokyo) 2010; 63:77-82. [PMID: 20057513 DOI: 10.1038/ja.2009.126] [Citation(s) in RCA: 28] [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] [Indexed: 11/09/2022]
Abstract
A new ryanodine-binding inhibitor, verticilide, was isolated from the cultured broth of a fungus, Verticillium sp. FKI-1033. It is a 24-membered ring cyclic depsipeptide, its structure being elucidated as cyclo[(2R)-2-hydroxyheptanoyl-N-methyl- L-alanyl](4). Verticilide inhibited ryanodine binding to ryanodine receptors in the cockroach at an IC(50) value of 4.2 microM, whereas inhibition against mouse ryanodine receptors was weak (IC(50)=53.9 microM).
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Affiliation(s)
- Kazuro Shiomi
- Kitasato Institute for Life Sciences, Graduate School of Infection Control Sciences, Kitasato University, Tokyo, Japan.
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Abstract
Airway occlusion by mucus in chronic obstructive disease (COPD) is associated with a poor prognosis. We hypothesised that tiotropium has the ability to inhibit neutrophil elastase (NE)-induced goblet cell metaplasia in mice and mucin production in vitro. On days 1, 4, and 7, tiotropium or vehicle was administered to C57BL/6 mice by inhalation and they were allowed to intranasally aspirate human NE. Bronchoalveolar lavage fluid (BALF) and lung sections were analysed on days 8, 11 and 14. The effect of late administration of tiotropium on the goblet cell metaplasia by NE aspiration was also assessed. NE-induced MUC5AC production by NCI-H292 cells was measured with ELISA. Repeated NE aspiration induced marked goblet cell metaplasia. The grading of goblet cell metaplasia, neutrophil count and eosinophil count in BALF, keratinocyte-derived chemokine level and leukotriene B(4) level in BALF, and M(3) receptor expression by immunohistochemistry, were lower in the tiotropium group than in the vehicle group. Late administration of tiotropium inhibited the established goblet cell metaplasia. Tiotropium inhibited NE-induced MUC5AC production. Tiotropium inhibited NE-induced goblet cell metaplasia and mucin production, probably mediated by suppression of inflammation and a direct action on epithelial cells. This result suggests that tiotropium may be useful for the treatment of mucus overproduction in COPD.
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Affiliation(s)
- N Arai
- First Dept of Medicine, Tokyo Women's Medical University School of Medicine, Tokyo, Japan
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Okuyama J, Kawabata Y, Naito Y, Arai N, Kobayashi M. Monitoring beak movements with an acceleration datalogger: a useful technique for assessing the feeding and breathing behaviors of sea turtles. ENDANGER SPECIES RES 2009. [DOI: 10.3354/esr00215] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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Abstract
BACKGROUND International guidelines allow healthy patients to drink clear liquid up to 2 h before general anesthesia. Recently, MRI measurements have been used for tracking gastric volume in humans. Hence, we used MRI to examine the gastric emptying rate of water in healthy volunteers with or without prior water loading. METHODS Fifteen healthy volunteers were enrolled. The participants had MRI examinations on separate days under two different protocols: The preliminary hydration protocol (group H) and the water restriction protocol (group R). After the intake of water, MR imaging was performed every 10 min for 60 min. The gastric content was outlined as area of interest (AOI), and the AOI area of each slice was summated to calculate the volume of gastric contents. RESULTS The 50% reduction time of gastric volume in group R and group H was 18+/-9 and 16+/-8 min (mean+/-SD), respectively. There were no significant changes between the two groups. CONCLUSION The gastric emptying time for water evaluated with MRI was not affected by preliminary hydration, which shows the safety of repeated oral hydrations in the pre-operative period.
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Affiliation(s)
- T Umenai
- Department of Anesthesiology, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Osao A, Takakura Y, Arai N. Characteristic flow phenomena on a tee-branch pipe. J Vis (Tokyo) 2008. [DOI: 10.1007/bf03182196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Furubayashi T, Mochizuki H, Terada S, Terao Y, Arai N, Hanajima R, Hamada M, Matsumoto H, Yugeta A, Ugawa Y. Hemoglobin concentration changes induced by transcranial magnetic stimulation over the human hand motor area. Brain Stimul 2008. [DOI: 10.1016/j.brs.2008.06.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Müller-Dahlhaus F, Peurala S, Arai N, Ziemann U. Interference of short-interval intracortical inhibition (SICI) and short-interval intracortical facilitation (SICF). Brain Stimul 2008. [DOI: 10.1016/j.brs.2008.06.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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50
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Lu M, Bliem B, Jung P, Arai N, Ziemann U. Modulation of movement related cortical potentials by paired associative transcranial stimulation. Brain Stimul 2008. [DOI: 10.1016/j.brs.2008.06.039] [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: 11/27/2022] Open
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