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Muhammad HJ, Shimada T, Fujita A, Sai Y. Sodium citrate buffer improves pazopanib solubility and absorption in gastric acid-suppressed rat model. Drug Metab Pharmacokinet 2024; 55:100995. [PMID: 38447327 DOI: 10.1016/j.dmpk.2024.100995] [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: 09/01/2023] [Revised: 11/24/2023] [Accepted: 12/29/2023] [Indexed: 03/08/2024]
Abstract
Pazopanib exhibits pH-dependent solubility and its absorption depends primarily on the stomach pH. Significant decrease of pazopanib absorption by coadministration with proton pump inhibitors in clinical situation need to be overcome. Thus, the purpose of this study is firstly to investigate the effect of acidic beverages and sodium citrate buffer on the solubility of pazopanib and secondly to examine the effect of sodium citrate buffer on pazopanib absorption in a rat model with esomeprazole-mediated gastric acid suppression. Pazopanib solubility decreased with increasing pH of sodium citrate buffer in vitro. Interestingly, its solubility in some acidic beverages was significantly lower than that in sodium citrate buffer of the same pH. The AUC0-24h of pazopanib administered in tap water to rats treated with esomeprazole (ESP rats) was 66 % lower than that in the control rats treated with saline. However, AUC0-24h was 4.8 times higher in ESP rats that received pazopanib with sodium citrate buffer (pH 2.3) compared to ESP rats that received pazopanib with tap water. Our results indicate that the drug-drug interactions between pazopanib and proton pump inhibitors can be overcome, at least in part, by suspending pazopanib in sodium citrate buffer.
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Affiliation(s)
- Huda Jassim Muhammad
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Clinical Pharmacy, College of Pharmacy, Karbala University, Karbala, 56001, Iraq.
| | - Tsutomu Shimada
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
| | - Arimi Fujita
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
| | - Yoshimichi Sai
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
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Shimada T, Kawakami D, Fujita A, Yamamoto R, Hara S, Ito K, Mizushima I, Kitajima S, Iwata Y, Sakai N, Kawano M, Wada T, Sai Y. Validation of an automated sample preparation module directly connected to LC-MS/MS (CLAM-LC-MS/MS system) and comparison with conventional immunoassays for quantitation of tacrolimus and cyclosporin A in a clinical setting. J Pharm Health Care Sci 2024; 10:5. [PMID: 38191469 PMCID: PMC10773076 DOI: 10.1186/s40780-023-00318-6] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 11/13/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Therapeutic drug monitoring (TDM) systems generally use either liquid chromatography/tandem mass spectrometry (LC-MS/MS) or immunoassay, though both methodologies have disadvantages. In this study, we aimed to evaluate whether a CLAM-LC-MS/MS system, which consists of a sample preparation module directly connected to LC-MS/MS, could be used for clinical TDM work for immunosuppressive drugs in whole blood, which requires a hemolytic process. For this purpose, we prospectively validated this system for clinical measurement of tacrolimus and cyclosporin A in patients' whole blood. The results were also compared with those of commercial immunoassays. METHODS Whole blood from patients treated with tacrolimus or cyclosporin A at the Department of Nephrology and Departments of Rheumatology, Kanazawa University Hospital, from May 2018 to July 2019 was collected with informed consent, and drug concentrations were measured by CLAM-LC-MS/MS and by chemiluminescence immunoassay (CLIA) for tacrolimus and affinity column-mediated immunoassay (ACMIA) for cyclosporin A. Correlations between the CLAM-LC-MS/MS and immunoassay results were analyzed. RESULTS Two hundred and twenty-four blood samples from 80 patients were used for tacrolimus measurement, and 76 samples from 21 patients were used for cyclosporin A. Intra- and inter-assay precision values of quality controls were less than 7%. There were significant correlations between CLAM-LC-MS/MS and the immunoassays for tacrolimus and cyclosporin A (Spearman rank correlation coefficients: 0.861, 0.941, P < 0.00001 in each case). The drug concentrations measured by CLAM-LC-MS/MS were about 20% lower than those obtained using the immunoassays. CLAM-LC-MS/MS maintenance requirements did not interfere with clinical operations. Compared to manual pretreatment, automated pretreatment by CLAM showed lower inter-assay precision values and greatly reduced the pretreatment time. CONCLUSIONS The results obtained by CLAM-LC-MS/MS were highly correlated with those of commercial immunoassay methods. CLAM-LC-MS/MS offers advantages in clinical TDM practice, including simple, automatic pretreatment, low maintenance requirement, and avoidance of interference.
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Affiliation(s)
- Tsutomu Shimada
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan.
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Daisuke Kawakami
- Shimadzu Corporation, Kyoto, Japan
- Shimadzu Europa GmbH, Duisburg, Germany
| | - Arimi Fujita
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | | | - Satoshi Hara
- Department of Rheumatology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Kiyoaki Ito
- Department of Rheumatology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Ichiro Mizushima
- Department of Rheumatology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Shinji Kitajima
- Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Mitsuhiro Kawano
- Department of Rheumatology, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Faculty of Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yoshimichi Sai
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
- AI Hospital/Macro Signal Dynamics Research and Development Center, Kanazawa University, Kanazawa, Ishikawa, Japan
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S, Girakossyan I, Girndt M, Giuffrida A, Glenwright M, Glider T, Gloria R, Glowski D, Goh BL, Goh CB, Gohda T, Goldenberg R, Goldfaden R, Goldsmith C, Golson B, Gonce V, Gong Q, Goodenough B, Goodwin N, Goonasekera M, Gordon A, Gordon J, Gore A, Goto H, Goto S, Goto S, Gowen D, Grace A, Graham J, Grandaliano G, Gray M, Green JB, Greene T, Greenwood G, Grewal B, Grifa R, Griffin D, Griffin S, Grimmer P, Grobovaite E, Grotjahn S, Guerini A, Guest C, Gunda S, Guo B, Guo Q, Haack S, Haase M, Haaser K, Habuki K, Hadley A, Hagan S, Hagge S, Haller H, Ham S, Hamal S, Hamamoto Y, Hamano N, Hamm M, Hanburry A, Haneda M, Hanf C, Hanif W, Hansen J, Hanson L, Hantel S, Haraguchi T, Harding E, Harding T, Hardy C, Hartner C, Harun Z, Harvill L, Hasan A, Hase H, Hasegawa F, Hasegawa T, Hashimoto A, Hashimoto C, Hashimoto M, Hashimoto S, Haskett S, Hauske SJ, Hawfield A, Hayami T, Hayashi M, Hayashi S, Haynes R, Hazara A, Healy C, Hecktman J, Heine G, Henderson H, Henschel R, Hepditch A, Herfurth K, 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S, Kiyosue A, Kiyota M, Klauser F, Klausmann G, Kmietschak W, Knapp K, Knight C, Knoppe A, Knott C, Kobayashi M, Kobayashi R, Kobayashi T, Koch M, Kodama S, Kodani N, Kogure E, Koizumi M, Kojima H, Kojo T, Kolhe N, Komaba H, Komiya T, Komori H, Kon SP, Kondo M, Kondo M, Kong W, Konishi M, Kono K, Koshino M, Kosugi T, Kothapalli B, Kozlowski T, Kraemer B, Kraemer-Guth A, Krappe J, Kraus D, Kriatselis C, Krieger C, Krish P, Kruger B, Ku Md Razi KR, Kuan Y, Kubota S, Kuhn S, Kumar P, Kume S, Kummer I, Kumuji R, Küpper A, Kuramae T, Kurian L, Kuribayashi C, Kurien R, Kuroda E, Kurose T, Kutschat A, Kuwabara N, Kuwata H, La Manna G, Lacey M, Lafferty K, LaFleur P, Lai V, Laity E, Lambert A, Landray MJ, Langlois M, Latif F, Latore E, Laundy E, Laurienti D, Lawson A, Lay M, Leal I, Leal I, Lee AK, Lee J, Lee KQ, Lee R, Lee SA, Lee YY, Lee-Barkey Y, Leonard N, Leoncini G, Leong CM, Lerario S, Leslie A, Levin A, Lewington A, Li J, Li N, Li X, Li Y, Liberti L, Liberti ME, Liew A, Liew YF, 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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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K, McKinley T, McLaughlin S, McLean N, McNeil L, Measor A, Meek J, Mehta A, Mehta R, Melandri M, Mené P, Meng T, Menne J, Merritt K, Merscher S, Meshykhi C, Messa P, Messinger L, Miftari N, Miller R, Miller Y, Miller-Hodges E, Minatoguchi M, Miners M, Minutolo R, Mita T, Miura Y, Miyaji M, Miyamoto S, Miyatsuka T, Miyazaki M, Miyazawa I, Mizumachi R, Mizuno M, Moffat S, Mohamad Nor FS, Mohamad Zaini SN, Mohamed Affandi FA, Mohandas C, Mohd R, Mohd Fauzi NA, Mohd Sharif NH, Mohd Yusoff Y, Moist L, Moncada A, Montasser M, Moon A, Moran C, Morgan N, Moriarty J, Morig G, Morinaga H, Morino K, Morisaki T, Morishita Y, Morlok S, Morris A, Morris F, Mostafa S, Mostefai Y, Motegi M, Motherwell N, Motta D, Mottl A, Moys R, Mozaffari S, Muir J, Mulhern J, Mulligan S, Munakata Y, Murakami C, Murakoshi M, Murawska A, Murphy K, Murphy L, Murray S, Murtagh H, Musa MA, Mushahar L, Mustafa R, Mustafar R, Muto M, Nadar E, Nagano R, Nagasawa T, Nagashima E, Nagasu H, Nagelberg S, Nair H, Nakagawa Y, Nakahara M, Nakamura J, Nakamura R, Nakamura T, Nakaoka M, Nakashima E, Nakata J, Nakata M, Nakatani S, Nakatsuka A, Nakayama Y, Nakhoul G, Nangaku M, Naverrete G, Navivala A, Nazeer I, Negrea L, Nethaji C, Newman E, Ng SYA, Ng TJ, Ngu LLS, Nimbkar T, Nishi H, Nishi M, Nishi S, Nishida Y, Nishiyama A, Niu J, Niu P, Nobili G, Nohara N, Nojima I, Nolan J, Nosseir H, Nozawa M, Nunn M, Nunokawa S, Oda M, Oe M, Oe Y, Ogane K, Ogawa W, Ogihara T, Oguchi G, Ohsugi M, Oishi K, Okada Y, Okajyo J, Okamoto S, Okamura K, Olufuwa O, Oluyombo R, Omata A, Omori Y, Ong LM, Ong YC, Onyema J, Oomatia A, Oommen A, Oremus R, Orimo Y, Ortalda V, Osaki Y, Osawa Y, Osmond Foster J, O'Sullivan A, Otani T, Othman N, Otomo S, O'Toole J, Owen L, Ozawa T, Padiyar A, Page N, Pajak S, Paliege A, Pandey A, Pandey R, Pariani H, Park J, Parrigon M, Passauer J, Patecki M, Patel M, Patel R, Patel T, Patel Z, Paul R, Paul R, Paulsen L, Pavone L, Peixoto A, Peji J, Peng BC, Peng K, Pennino L, Pereira E, Perez E, Pergola 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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Sumiya K, Shogenji M, Ikenaga Y, Ogawa Y, Hirako K, Fujita A, Shimada T, Hashimoto M, Masuda A, Nagamoto T, Tamai I, Ogura H, Toyama T, Wada T, Sai Y. Association between switching prescribed drugs for lower urinary tract symptoms and independence of urination in post-stroke patients: A retrospective cohort study. J Stroke Cerebrovasc Dis 2023; 32:107419. [PMID: 37839304 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107419] [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: 04/06/2023] [Revised: 08/24/2023] [Accepted: 10/06/2023] [Indexed: 10/17/2023] Open
Abstract
OBJECTIVES Stroke patients frequently exhibit loss of independence of urination, and their lower urinary tract symptoms change with the phase of stroke. However, it is unclear whether switching prescribed drugs for lower urinary tract symptoms during hospitalization from acute care wards to convalescence rehabilitation wards affects patients' independence of urination at discharge. It is also unclear whether the impact of switching varies by stroke type. This retrospective cohort study aimed to examine these issues. MATERIALS AND METHODS We analyzed 990 patients registered in the Kaga Regional Cooperation Clinical Pathway for Stroke database during 2015-2019. Prescriptions for lower urinary tract symptoms from pre-onset to convalescence rehabilitation were surveyed. Logistic regression analysis was performed to examine the association between switching drugs and independence of urination based on bladder management and voiding location at discharge. Stroke types were also examined in subgroup analyses. RESULTS About 21 % of patients had their lower urinary tract symptoms prescriptions switched during hospitalization. Switching was positively associated with independence of bladder management (odds ratio 1.65, 95 % confidence interval 1.07 to 2.49) and voiding location (odds ratio 2.72, 95 % confidence interval 1.72 to 4.37). Similar associations were observed in different stroke types. CONCLUSIONS Approximately 20 % of patients had their lower urinary tract symptoms medications switched upon transfer from acute to convalescence rehabilitation wards. Switching was significantly associated with improved urinary independence at discharge. Consistent results were observed across different stroke types, suggesting that switching medications contributes to urinary independence after stroke, regardless of the etiology or severity of stroke.
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Affiliation(s)
- Koyomi Sumiya
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Miho Shogenji
- Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan
| | - Yasunori Ikenaga
- Department of Rehabilitation Medicine, Yawata Medical Center, Ishikawa, Japan; Council of Kaga Local Stroke Network, South Ishikawa, Japan
| | - Yoru Ogawa
- Council of Kaga Local Stroke Network, South Ishikawa, Japan; Department of Pharmacy, Komatsu Municipal Hospital, Ishikawa, Japan
| | - Kohei Hirako
- Frontier Science and Social Co-creation Initiative, Kanazawa University, Ishikawa, Japan; The Establishment Preparation Office for The Faculty of Interdisciplinary Economics, Kinjo University, Ishikawa, Japan
| | - Arimi Fujita
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan; Department of Hospital Pharmacy, University Hospital, Kanazawa University, Ishikawa, Japan
| | - Tsutomu Shimada
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan; Department of Hospital Pharmacy, University Hospital, Kanazawa University, Ishikawa, Japan.
| | | | | | | | - Ikumi Tamai
- Division of Pharmacy, Graduate School of Pharmaceutical Sciences, Kanazawa University, Ishikawa, Japan; AI Hospital/Macro Signal Dynamics Research and Development Center, Kanazawa University, Ishikawa, Japan
| | - Hisayuki Ogura
- AI Hospital/Macro Signal Dynamics Research and Development Center, Kanazawa University, Ishikawa, Japan; Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan
| | - Tadashi Toyama
- AI Hospital/Macro Signal Dynamics Research and Development Center, Kanazawa University, Ishikawa, Japan; Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Ishikawa, Japan
| | - Yoshimichi Sai
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan; Department of Hospital Pharmacy, University Hospital, Kanazawa University, Ishikawa, Japan; AI Hospital/Macro Signal Dynamics Research and Development Center, Kanazawa University, Ishikawa, Japan
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Ito Y, Nakade J, Seki A, Gabata R, Okazaki M, Nakanuma S, Fujita A, Shimada T, Yamashita T, Yagi S, Taniguchi T, Sai Y. Case report: therapeutic monitoring of vancomycin in an acute liver failure patient with anuria under high-flow continuous hemodiafiltration. J Pharm Health Care Sci 2023; 9:15. [PMID: 37122008 PMCID: PMC10150540 DOI: 10.1186/s40780-023-00283-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 03/24/2023] [Indexed: 05/02/2023] Open
Abstract
BACKGROUND High-flow continuous hemodiafiltration (HF-CHDF) combines diffusive and convective solute removal and is employed for artificial liver adjuvant therapy. However, there is no report on dosage planning of vancomycin (VCM) in patients with acute liver failure under HF-CHDF. CASE PRESENTATION A 20-year-old woman (154 cm tall, weighing 50 kg) was transferred to the intensive care unit (ICU) with acute liver failure associated with autoimmune liver disease. On the following day, HF-CHDF was started due to elevated plasma ammonia concentration. On ICU day 8, VCM was started for suspected pneumonia and meningitis (30 mg/kg loading dose, then 20 mg/kg every 12 hrs). However, on ICU day 10, VCM blood concentration was under the limit of detection (< 3.0 μg/mL) and the patient developed anuria. The VCM dose was increased to 20 mg/kg every 6 hrs. Calculation with a one-compartment model using the HF-CHDF blood flow rate as a surrogate for VCM clearance, together with hematocrit and protein binding ratio, predicted a trough VCM blood concentration of 15 μg/mL. The observed concentration was about 12 μg/mL. The difference may represent non-HF-CHDF clearance. Finally, living donor liver transplantation was performed. CONCLUSION We report an acute liver failure patient with anuria under HF-CHDF in whom VCM administration failed to produce an effective blood concentration, likely due to HF-CHDF-enhanced clearance. VCM dosage adjustment proved successful, and was confirmed by calculation using a one-compartment model.
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Affiliation(s)
- Yuriko Ito
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Junya Nakade
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
- Department of Infection Control and Prevention, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Akihiro Seki
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Ryosuke Gabata
- Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Mitsuyoshi Okazaki
- Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Shinichi Nakanuma
- Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Arimi Fujita
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Tsutomu Shimada
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Taro Yamashita
- Department of Gastroenterology, Graduate School of Medicine, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Shintaro Yagi
- Department of Hepato-Biliary-Pancreatic Surgery and Transplantation, Graduate School of Medical Science, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takumi Taniguchi
- Intensive Care Unit, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Yoshimichi Sai
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
- AI Hospital/Macro Signal Dynamics Research and Development Center, Kanazawa University, 13-1 Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
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Nagai H, Shimada T, Takahashi Y, Nishikawa M, Tozuka H, Yamamoto Y, Niwa O, Takahara Y, Fujita A, Nagase K, Kasahara K, Yano S, Sai Y. Evaluation of factors affecting epidermal growth factor receptor tyrosine kinase inhibitor-induced hepatotoxicity in Japanese patients with non-small cell lung cancer: a two-center retrospective study. J Pharm Health Care Sci 2022; 8:28. [DOI: 10.1186/s40780-022-00258-7] [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: 04/30/2022] [Accepted: 09/28/2022] [Indexed: 12/02/2022] Open
Abstract
Abstract
Background
Gefitinib and erlotinib, are epidermal growth factor receptor tyrosine kinase inhibitors, and are currently recommended for non-small cell lung cancer stage IV in the elderly and in patients with decreased performance status in the Japanese Lung Cancer Society Guideline, but they occasionally caused severe hepatotoxicity requiring postponement or modification of treatment. However, little is known about the risk factors for hepatotoxicity in patients receiving gefitinib and erlotinib. In this study, we investigated the factors influencing hepatotoxicity in Japanese non-small cell lung cancer (NSCLC) patients treated with gefitinib or erlotinib monotherapy.
Methods
Japanese patients with NSCLC who started gefitinib or erlotinib monotherapy from January 2005 to December 2017 at Kanazawa University Hospital or Kanazawa Medical University Hospital were included in this study. Factors affecting hepatotoxicity were retrospectively investigated by multiple logistic regression analysis.
Results
A total of 102 patients who received gefitinib and 95 patients who received erlotinib were included in the analysis. In the gefitinib group, a body mass index (BMI) ≥ 25 was associated with an increased risk of hepatotoxicity (OR = 4.571, 95% CI = 1.486–14.056, P = 0.008). In the erlotinib group, concomitant use of acid-suppressing medications (AS), namely proton pump inhibitors or histamine-2 receptor antagonists, was associated with a reduced risk of hepatotoxicity (OR = 0.341, 95% CI = 0.129–0.900, P = 0.030).
Conclusions
BMI ≥ 25 in patients treated with gefitinib increased the risk of hepatotoxicity. In contrast, AS combination with erlotinib reduced the risk of hepatotoxicity. Thus, because different factors influence the risk of hepatotoxicity, monitoring for adverse events should take into account patient background factors and concomitant medications.
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Yamashita S, Kohta M, Hosoda K, Tanaka J, Matsuo K, Kimura H, Tanaka K, Fujita A, Sasayama T. Absence of the Anterior Communicating Artery on Selective MRA is Associated with New Ischemic Lesions on MRI after Carotid Revascularization. AJNR Am J Neuroradiol 2022; 43:1124-1130. [PMID: 35835591 PMCID: PMC9575412 DOI: 10.3174/ajnr.a7570] [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: 02/20/2022] [Accepted: 05/17/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE ICA-selective MRA using a pencil beam presaturation pulse can accurately visualize anterior communicating artery flow. We evaluated the impact of anterior communicating artery flow on the perioperative hemodynamic status and new ischemic lesions after carotid revascularization. MATERIALS AND METHODS Eighty-three patients with carotid artery stenosis were included. We assessed anterior communicating artery flow using ICA-selective MRA. The preoperative hemodynamic status was measured using SPECT. We also measured the change in regional cerebral oxygen saturation after temporary ICA occlusion. New ischemic lesions were evaluated by DWI on the day after treatment. RESULTS Anterior communicating artery flow was detected in 61 patients, but it was not detected in 22 patients. Preoperative cerebrovascular reactivity was significantly higher in patients with (versus without) anterior communicating artery flow with a mean peak systolic velocity of ≥200 cm/s (39.6% [SD, 23.8%] versus 25.2% [SD, 16.4%]; P = .030). The decrease in mean regional cerebral oxygen saturation was significantly greater in patients without (versus with) anterior communicating artery flow (8.5% [SD, 5.6%] versus 3.7% [SD, 3.8%]; P = .002). New ischemic lesions after the procedure were observed in 23 patients. The multivariate logistic regression analysis revealed that anterior communicating artery flow (OR, 0.07; 95% CI, 0.012-0.45; P = .005) was associated with new ischemic lesions. CONCLUSIONS The absence of anterior communicating artery flow influenced the perioperative hemodynamic status in patients with carotid stenosis and was associated with an increased incidence of new ischemic lesions after carotid revascularization.
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Affiliation(s)
- S Yamashita
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - M Kohta
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Hosoda
- Department of Neurosurgery (K.H.), Kobe City Nishi-Kobe Medical Center, Kobe, Japan
| | - J Tanaka
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Matsuo
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - H Kimura
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Tanaka
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - A Fujita
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - T Sasayama
- From the Department of Neurosurgery (S.Y., M.K., J.T., K.M., H.K., K.T., A.F., T.S.), Kobe University Graduate School of Medicine, Kobe, Japan
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Futagi Y, Ito Y, Nakade J, Fujita A, Shimada T, Yoshida M, Takahashi Y, Kawano M, Taniguchi T, Sai Y. Ceftriaxone-induced encephalopathy in a patient with a solitary kidney. Int J Infect Dis 2022; 122:722-724. [PMID: 35843497 DOI: 10.1016/j.ijid.2022.07.036] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 07/08/2022] [Accepted: 07/11/2022] [Indexed: 10/17/2022] Open
Abstract
Ceftriaxone (CRO) is a long-acting third-generation cephalosporin antibiotic. We present a case of CRO-induced encephalopathy in an 84-year-old male patient with a solitary right kidney, admitted with bilateral pneumonia and right pyelonephritis. Intravenous CRO (2 g, every 24 hr) was started for the infection, but tonic-clonic seizures of the left face and left upper extremity appeared on the 8th day. To examine the relationship between CRO administration and the seizures, we measured CRO concentrations in the patients' plasma/serum and cerebrospinal fluid (CSF). The CRO concentration in blood at the onset of encephalopathy was estimated to have been approximately 60 μg/mL based on a simulation curve. We also calculated the pharmacokinetic parameters after CRO administration. The patient had about one-tenth of the total body clearance and one-third of the volume of distribution compared with healthy adults, and the elimination half-life was about 3 times longer.
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Affiliation(s)
- Yuya Futagi
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
| | - Yuriko Ito
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Junya Nakade
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Infection Control and Prevention, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Arimi Fujita
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Tsutomu Shimada
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Misaki Yoshida
- Department of Rheumatology, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Yoshinori Takahashi
- Department of Infection Control and Prevention, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Rheumatology, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Mitsuhiro Kawano
- Department of Rheumatology, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Takumi Taniguchi
- Intensive Care Unit, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Yoshimichi Sai
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan; Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
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10
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Fujita A, Noguchi S, Hamada R, Inoue S, Shimada T, Katakura S, Maruyama T, Sai Y, Nishimura T, Tomi M. Limited Impact of Murine Placental MDR1 on Fetal Exposure of Certain Drugs Explained by Bypass Transfer Between Adjacent Syncytiotrophoblast Layers. Pharm Res 2022; 39:1645-1658. [PMID: 35083640 PMCID: PMC9246986 DOI: 10.1007/s11095-022-03165-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 11/06/2021] [Accepted: 01/03/2022] [Indexed: 11/30/2022]
Abstract
Purpose Multidrug resistance protein 1 (MDR1) is located at the interface between two syncytiotrophoblast layers in rodent placenta, and may influence fetal drug distribution. Here, we quantitatively compare the functional impact per single MDR1 molecule of MDR1 at the placental barrier and blood-brain barrier in mice. Methods MDR1A and MDR1B proteins were quantified by liquid chromatography-tandem mass spectrometry (LC-MS/MS). Paclitaxel or digoxin was continuously administered to pregnant Mdr1a−/−/Mdr1b−/− or wild-type mice, and the drug concentrations in the maternal and fetal plasma and maternal brain were quantified by LC-MS/MS. Results MDR1A and MDR1B proteins are expressed in the membrane of mouse placental labyrinth, and total MDR1 at the placental barrier amounts to about 30% of that at the blood-brain barrier. The fetal-to-maternal plasma concentration ratio of digoxin was only marginally affected in Mdr1a−/−/Mdr1b−/− mice, while that of paclitaxel showed a several-fold increase. No such difference between the two drugs was found in the maternal brain distribution. The impact per single MDR1 molecule on the fetal distribution of digoxin was calculated to be much lower than that on the brain distribution, but this was not the case for paclitaxel. Our pharmacokinetic model indicates that the impact of placental MDR1 is inversely correlated to the ratio of permeability through gap junctions connecting the two syncytiotrophoblast layers to passive diffusion permeability. Conclusion Our findings indicate that murine placental MDR1 has a minimal influence on the fetal concentration of certain substrates, such as digoxin, due to bypass transfer, probably via connexin26 gap junctions. Supplementary Information The online version contains supplementary material available at 10.1007/s11095-022-03165-6.
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Affiliation(s)
- Arimi Fujita
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.,Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, 920-8641, Japan
| | - Saki Noguchi
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Rika Hamada
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Satoko Inoue
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Tsutomu Shimada
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, 920-8641, Japan
| | - Satomi Katakura
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tetsuo Maruyama
- Department of Obstetrics and Gynecology, Keio University School of Medicine, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Yoshimichi Sai
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, 920-8641, Japan
| | - Tomohiro Nishimura
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
| | - Masatoshi Tomi
- Division of Pharmaceutics, Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan.
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11
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Cunha M, Borges A, Carvalho V, Fujita A, Castro G. OA02.02 Development of Machine Learning Model to Estimate Overall Survival in Patients with Advanced NSCLC and ECOG-PS > 1. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Isoda K, Nakade J, Suga Y, Fujita A, Shimada T, Sai Y. Initial Serum C-reactive Protein Level as a Predictor of Increasing Serum Vancomycin Concentration During Treatment. Ther Drug Monit 2021; 43:652-656. [PMID: 33538550 DOI: 10.1097/ftd.0000000000000870] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 01/05/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Vancomycin has a narrow therapeutic window, and an increase in its serum concentration-to-dose ratio during treatment can cause renal toxicity. Therefore, this study was aimed at finding a marker to identify patients at risk of increasing serum vancomycin during treatment. METHODS This was a retrospective cohort study of patients treated with vancomycin at Kanazawa University Hospital, Japan, from April 2012 to May 2015. Spearman correlation coefficients were calculated to determine the correlations between changes in vancomycin concentration-to-dose ratio and initial values or changes in laboratory data and other parameters. In addition, a multiple regression analysis was conducted. RESULTS One hundred ninety-nine patients for whom 2 or more points of data on therapeutic drug monitoring (TDM) of intravenous vancomycin treatment were available and did not undergo dialysis were included in the study. Changes in vancomycin concentration-to-dose ratio were associated with C-reactive protein (CRP) and sodium (Na) levels on the initial day of TDM and with changes in white blood cell count, Na, and estimated glomerular filtration rates (eGFRs). Multiple regression analysis helped identify CRP and Na levels on the initial day of TDM and change in eGFR as independent influencing variables. CONCLUSIONS A high serum CRP level on the initial day of TDM is an independent predictor of increasing vancomycin concentration-to-dose ratio in patients receiving intravenous vancomycin treatment, even if eGFR remains unchanged.
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Affiliation(s)
- Kazuya Isoda
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Junya Nakade
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yukio Suga
- Department of Clinical Drug Informatics, Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Science, Kanazawa University, Kanazawa, Ishikawa, Japan; and
| | - Arimi Fujita
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Tsutomu Shimada
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Yoshimichi Sai
- Department of Clinical Pharmacokinetics, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Ishikawa, Japan
- Department of Hospital Pharmacy, University Hospital, Kanazawa University, Kanazawa, Ishikawa, Japan
- AI Hospital/Macro Signal Dynamics Research and Development Center, Institute of Medical, Pharmaceutical and Health Science, Kanazawa University, Kanazawa, Ishikawa, Japan
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13
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Yamashita S, Fujita A, Kohta M, Sasayama T, Kohmura E. Bone-destructive osseous arteriovenous fistula at the jugular bulb mimicking a glomus jugular tumor. Neurochirurgie 2021; 68:525-529. [PMID: 34536438 DOI: 10.1016/j.neuchi.2021.09.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Revised: 06/16/2021] [Accepted: 09/04/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Some reports have described intraosseous arteriovenous fistulas showing osteolytic changes, but an osseous arteriovenous fistula (AVF) at the jugular bulb showing extensive bone destruction is a very rare disease. CASE DESCRIPTION A 60-year-old man presented with pulsatile tinnitus and right facial nerve palsy. Radiological imaging showed a large homogenously enhanced osteolytic lesion at the right jugular foramen. A cerebral angiogram showed a high-flow vascular lesion of the jugular bulb associated with retrograde sinus reflux, resulting in venous congestion of the deep venous system. These findings led us to misdiagnose this lesion as a glomus jugular tumor. However, combined arterial and venous angiography after transarterial embolization revealed the precise angioarchitecture, and we finally diagnosed this lesion as a high-flow osseous AVF at the jugular bulb. We performed transvenous embolization using a triple catheter technique. The lesion was successfully obliterated, and the 6-months angiogram showed no recurrence. CONCLUSION A rare case of high flow osseous AVF at the jugular bulb associated with osteolytic changes in the surrounding bony structure is reported. Although many hypervascular lesions at the jugular bulb are glomus tumors, bone destructive osseous AVF at the jugular bulb should be considered.
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Affiliation(s)
- S Yamashita
- Department of Neurosurgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan.
| | - A Fujita
- Department of Neurosurgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - M Kohta
- Department of Neurosurgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - T Sasayama
- Department of Neurosurgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
| | - E Kohmura
- Department of Neurosurgery, Kobe University Graduate School of Medicine, 7-5-1, Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan
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14
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Tashima T, Miyaguchi K, Tanisaka Y, Fujita A, Mizuide M, Mashimo Y, Ryozawa S. Gastrointestinal: Endoscopic resection with an over-the-scope clip for a duodenal neuroendocrine tumor in a difficult-to-reach location. J Gastroenterol Hepatol 2021; 36:2334. [PMID: 33655616 DOI: 10.1111/jgh.15419] [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: 10/30/2020] [Accepted: 01/31/2021] [Indexed: 12/09/2022]
Affiliation(s)
- T Tashima
- Department of Gastroenterology, Saitama Medical University International Medical Center, Saitama, Japan
| | - K Miyaguchi
- Department of Gastroenterology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Y Tanisaka
- Department of Gastroenterology, Saitama Medical University International Medical Center, Saitama, Japan
| | - A Fujita
- Department of Gastroenterology, Saitama Medical University International Medical Center, Saitama, Japan
| | - M Mizuide
- Department of Gastroenterology, Saitama Medical University International Medical Center, Saitama, Japan
| | - Y Mashimo
- Department of Gastroenterology, Saitama Medical University International Medical Center, Saitama, Japan
| | - S Ryozawa
- Department of Gastroenterology, Saitama Medical University International Medical Center, Saitama, Japan
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15
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De Castro G, das Neves Silva W, Borges A, Jardim V, Brum P, Fujita A. 1813MO Impact of systemic inflammation, intramuscular adipose tissue content, and EORTC-QLQ-CAX24 symptom scale on the prognosis of patients with advanced non-small-cell lung cancer. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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16
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Fujita Y, Sasayama T, Tanaka K, Kyotani K, Nagashima H, Kohta M, Kimura H, Fujita A, Kohmura E. DWI for Monitoring the Acute Response of Malignant Gliomas to Photodynamic Therapy. AJNR Am J Neuroradiol 2019; 40:2045-2051. [PMID: 31753834 DOI: 10.3174/ajnr.a6300] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 09/13/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE Photodynamic therapy is a novel treatment that provides effective local control, but little is known about photodynamic therapy-induced changes on MR imaging. The aim of this study was to assess the utility of DWI and ADC in monitoring the response of malignant gliomas to photodynamic therapy. MATERIALS AND METHODS Time-dependent changes in DWI and ADC values after photodynamic therapy were analyzed in a group that received photodynamic therapy in comparison with a group that did not. RESULTS Twenty-four patients were enrolled (photodynamic therapy, n = 14; non-photodynamic therapy, n = 10). In all patients who received photodynamic therapy, linear high signals on DWI in the irradiated area were detected adjacent to the resection cavity and were 5-7 mm in depth from 1 day posttreatment and disappeared in about 30 days without any neurologic deterioration. The non-photodynamic therapy group did not show this change. The photodynamic therapy group had significantly lower ADC values from 1 day posttreatment (P < .001), which increased steadily and disappeared by 30 days. There was no decline or time-dependent change in ADC values in the non-photodynamic therapy group. CONCLUSIONS The acute response of malignant gliomas to photodynamic therapy was detected as linear high signals on DWI and as a decrease in ADC values. These findings were asymptomatic and transient. Although the photodynamic therapy-induced acute response on MR imaging disappeared after approximately 30 days, it may be helpful for confirming the photodynamic therapy-irradiated area.
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Affiliation(s)
- Y Fujita
- From the Department of Neurosurgery (Y.F., T.S., K.T., M.K., H.K., A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - T Sasayama
- From the Department of Neurosurgery (Y.F., T.S., K.T., M.K., H.K., A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - K Tanaka
- From the Department of Neurosurgery (Y.F., T.S., K.T., M.K., H.K., A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - K Kyotani
- Center for Radiology and Radiation Oncology (K.K.), Kobe University Graduate School of Medicine and Kobe University Hospital, Kobe, Hyogo, Japan
| | - H Nagashima
- Department of Neurosurgery (H.N.), Massachusetts General Hospital Research Institute, Boston, Massachusetts
| | - M Kohta
- From the Department of Neurosurgery (Y.F., T.S., K.T., M.K., H.K., A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - H Kimura
- From the Department of Neurosurgery (Y.F., T.S., K.T., M.K., H.K., A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - A Fujita
- From the Department of Neurosurgery (Y.F., T.S., K.T., M.K., H.K., A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - E Kohmura
- From the Department of Neurosurgery (Y.F., T.S., K.T., M.K., H.K., A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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Ota K, Ueno T, Nakanishi T, Nakano T, Yamashita T, Yoshimi M, Fujita A, Okabayashi H, Tao Y, Takata S. Evaluating the prevalence of the expression of PD-L1 in NSCLC specimens with short-duration formalin fixation using IHC 22C3 pharmDx. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz269.040] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Sone J, Mitsuhashi S, Fujita A, Takashima H, Sugiyama H, Kohno Y, Takiyama Y, Maeda K, Tanaka F, Iwasaki Y, Yoshida M, Matsumoto N, Sobue G. GGC repeat expansion in NOTCH2NLC is the cause of both sporadic and familial neuronal intranuclear inclusion disease. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1757] [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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19
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Fujii H, Fujita A, Kanazawa H, Sung E, Sakai O, Sugimoto H. Localization of Parotid Gland Tumors in Relation to the Intraparotid Facial Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence. AJNR Am J Neuroradiol 2019; 40:1037-1042. [PMID: 31122915 DOI: 10.3174/ajnr.a6078] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 04/21/2019] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Reliable preoperative facial nerve mapping may help avoid or minimize facial nerve injury during parotid tumor resection. The purpose of this study was to investigate the diagnostic performance of the 3D double-echo steady-state with water excitation sequence in localizing parotid gland tumors through direct visualization of the intraparotid facial nerve in comparison with indirect methods of estimating the facial nerve location. MATERIALS AND METHODS We retrospectively reviewed 91 parotid gland tumors in 90 patients who underwent surgical resection and preoperative MR imaging, including the 3D double-echo steady-state with water excitation sequence. The tumor locations were categorized as deep or superficial on the basis of direct and 3 indirect methods: the facial nerve line, retromandibular vein, and Utrecht line. Surgical localization was considered the criterion standard. The diagnostic performance for localizing deep lobe lesions using direct and indirect methods was calculated and compared using the McNemar test. RESULTS Surgical localization confirmed 75 superficial lesions and 16 deep lesions. The interobserver variability of the 3D double-echo steady-state with water excitation sequence was excellent (κ = 0.870). The diagnostic accuracy, sensitivity, specificity, positive predictive value, and negative predictive value for localizing deep lobe lesions using the 3D double-echo steady-state with water excitation method were 97.8%, 87.5%, 100%, 100%, and 97.4%, respectively. These findings were significantly higher than the facial nerve line in sensitivity, the retromandibular vein in sensitivity, and the Utrecht line in accuracy and specificity (P < .05). Overall, the direct method was the most accurate, sensitive, and specific in localizing parotid gland tumors. CONCLUSIONS We can achieve higher diagnostic performance in localizing parotid gland tumors by directly visualizing the intraparotid facial nerve using the 3D double-echo steady-state with water excitation sequence compared with indirect methods.
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Affiliation(s)
- H Fujii
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
| | - A Fujita
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
| | - H Kanazawa
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
| | - E Sung
- Departments of Radiology (E.S., O.S.)
| | - O Sakai
- Departments of Radiology (E.S., O.S.).,Otolaryngology-Head and Neck Surgery (O.S.).,Radiation Oncology (O.S.), Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
| | - H Sugimoto
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University, School of Medicine, Tochigi, Japan
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20
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Buch K, Baylosis B, Fujita A, Qureshi MM, Takumi K, Weber PC, Sakai O. Etiology-Specific Mineralization Patterns in Patients with Labyrinthitis Ossificans. AJNR Am J Neuroradiol 2019; 40:551-557. [PMID: 30792250 DOI: 10.3174/ajnr.a5985] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 01/05/2019] [Indexed: 12/20/2022]
Abstract
BACKGROUND AND PURPOSE Our aim was to identify whether specific patterns of ossification in labyrinthitis ossificans are associated with the known risk factors. Labyrinthitis ossificans has been described as sequela of prior temporal bone trauma, prior infection, and other disorders including sickle cell disease. Specific patterns of mineralization in the membranous labyrinth associated with these risk factors has not been previously described. MATERIALS AND METHODS This was a retrospective study evaluating temporal bone CT scans at our institution from November 2005 to May 2018 in patients with labyrinthitis ossificans. Membranous labyrinthine structures evaluated for ossification included the following: basal, middle, and apical cochlear turns; lateral, posterior, and superior semicircular canals; and the vestibule for both ears in all patients. These structures were assigned a severity score, 0-4, based on degree of mineralization. Clinical records were reviewed for potential labyrinthitis ossificans risk factors. Basic descriptive statistics and a mixed model were used to correlate the degree and patterns of ossification with clinical history. RESULTS Forty-four patients (58 ears) with labyrinthitis ossificans were identified and evaluated. The most common risk factors were chronic otomastoiditis (n = 18), temporal bone surgery (n = 9), temporal bone trauma (n = 6), sickle cell disease (n = 5), and meningitis (n = 4). For all etiologies, the semicircular canals were most severely affected, and the vestibule was the least. In patients with prior temporal bone surgery, significantly greater mineralization was seen in the basal turn of the cochlea (P = .027), the vestibule (P = .001), and semicircular canals (P < .001-.008). No significant pattern was identified in patients with meningitis, sickle cell disease, or trauma. CONCLUSIONS Significant patterns of mineralization in labyrinthitis ossificans were observed in patients with prior temporal bone surgery. For all etiologies, the semicircular canals were most severely affected. No significant mineralization pattern was observed in patients with chronic otomastoiditis, meningitis, sickle cell disease, or prior temporal bone trauma.
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Affiliation(s)
- K Buch
- From the Departments of Radiology (K.B., B.B., A.F., M.M.Q., K.T., O.S.)
| | - B Baylosis
- From the Departments of Radiology (K.B., B.B., A.F., M.M.Q., K.T., O.S.)
| | - A Fujita
- From the Departments of Radiology (K.B., B.B., A.F., M.M.Q., K.T., O.S.)
- Department of Radiology (A.F.), Jichi Medical University, Shimotsuke, Tochigi, Japan
| | - M M Qureshi
- From the Departments of Radiology (K.B., B.B., A.F., M.M.Q., K.T., O.S.)
- Radiation Oncology (M.M.Q., P.C.W., O.S.)
| | - K Takumi
- From the Departments of Radiology (K.B., B.B., A.F., M.M.Q., K.T., O.S.)
| | - P C Weber
- Radiation Oncology (M.M.Q., P.C.W., O.S.)
| | - O Sakai
- From the Departments of Radiology (K.B., B.B., A.F., M.M.Q., K.T., O.S.)
- Radiation Oncology (M.M.Q., P.C.W., O.S.)
- Otolaryngology-Head and Neck Surgery (O.S.), Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts
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21
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Hirai T, Yamaga R, Fujita A, Itoh T. Low body mass index is a risk factor for hyperkalaemia associated with angiotensin converting enzyme inhibitors and angiotensin II receptor blockers treatments. J Clin Pharm Ther 2018; 43:829-835. [PMID: 29908131 DOI: 10.1111/jcpt.12720] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2018] [Accepted: 05/14/2018] [Indexed: 12/19/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Angiotensin converting enzyme inhibitors (ACEI) and angiotensin II receptor blockers (ARB) represent the cornerstones of hypertension and congestive heart failure treatment. Risk factors for hyperkalaemia associated with ACEI and ARB are chronic kidney disease and concomitant medications which increase serum potassium level. Body mass index (BMI) also affects pharmacokinetics of ACEI and ARB and potassium disposition. We evaluated the relationship between BMI and hyperkalaemia associated with ACEI and ARB treatments. METHODS Study design is a retrospective case-control analysis. Patients who had been prescribed ACEI or ARB between June 2015 and June 2017 at Tokyo Women's Medical University, Medical Center East, were included. Patient clinical background was collected from medical records. Hyperkalaemia was defined as serum potassium above 5.5 meq/L. The concomitant use of ACEI and ARB, aldosterone antagonists, direct renin inhibitor, sulfamethoxazole-trimethoprim and non-steroidal anti-inflammatory drugs (NSAIDs) was regarded as hyperkalaemia-inducing medications. The relationship between BMI and hyperkalaemia associated with ACEI and ARB treatments was assessed using multivariable logistic regression analysis. RESULTS AND DISCUSSION The study included 2987 patients aged 70.1 ± 12.9 years, 61.0% were men, and BMI was 23.8 ± 4.4 kg/m2 . The incidence of hyperkalaemia was 7.8%. Multivariable logistic regression analysis revealed that age >65 years, low BMI, diabetes, history of treatment for hyperkalaemia, serum sodium <135 meq/L, eGFR <30 mL/min/1.73m2 and the concomitant use of hyperkalaemia-inducing medications were independent risk factors for hyperkalaemia associated with ACEI and ARB. WHAT IS NEW AND CONCLUSION This study demonstrated that BMI provides useful information for the identification of potential risk for hyperkalaemia associated with ACEI and ARB treatments.
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Affiliation(s)
- T Hirai
- Department of Pharmacy, Tokyo Women's Medical University Medical Center East, Tokyo, Japan
| | - R Yamaga
- Department of Pharmacy, Tokyo Women's Medical University Medical Center East, Tokyo, Japan
| | - A Fujita
- Department of Pharmacy, Tokyo Women's Medical University Medical Center East, Tokyo, Japan
| | - T Itoh
- Department of Pharmacy, Tokyo Women's Medical University Medical Center East, Tokyo, Japan
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22
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Hamanaka K, Takahashi K, Miyatake S, Mitsuhashi S, Hamanoue H, Miyaji Y, Fukai R, Doi H, Fujita A, Imagawa E, Iwama K, Nakashima M, Mizuguchi T, Takata A, Miyake N, Takeuchi H, Tanaka F, Matsumoto N. Confirmation of
SLC5A7
‐related distal hereditary motor neuropathy 7 in a family outside Wales. Clin Genet 2018; 94:274-275. [DOI: 10.1111/cge.13369] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 04/17/2018] [Accepted: 04/18/2018] [Indexed: 11/29/2022]
Affiliation(s)
- K. Hamanaka
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - K. Takahashi
- Department of Neurology and Stroke Medicine Yokohama City University Graduate School of Medicine Yokohama Japan
| | - S. Miyatake
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
- Clinical Genetics Department Yokohama City University Hospital Yokohama Japan
| | - S. Mitsuhashi
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - H. Hamanoue
- Clinical Genetics Department Yokohama City University Hospital Yokohama Japan
| | - Y. Miyaji
- Department of Neurology and Stroke Medicine Yokohama City University Graduate School of Medicine Yokohama Japan
| | - R. Fukai
- Department of Neurology and Stroke Medicine Yokohama City University Graduate School of Medicine Yokohama Japan
| | - H. Doi
- Department of Neurology and Stroke Medicine Yokohama City University Graduate School of Medicine Yokohama Japan
| | - A. Fujita
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - E. Imagawa
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - K. Iwama
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - M. Nakashima
- Department of Biochemistry Hamamatsu University School of Medicine Hamamatsu Japan
| | - T. Mizuguchi
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - A. Takata
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - N. Miyake
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
| | - H. Takeuchi
- Department of Neurology and Stroke Medicine Yokohama City University Graduate School of Medicine Yokohama Japan
| | - F. Tanaka
- Department of Neurology and Stroke Medicine Yokohama City University Graduate School of Medicine Yokohama Japan
| | - N. Matsumoto
- Department of Human Genetics Yokohama City University Graduate School of Medicine Yokohama Japan
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24
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Shiono S, Okumura T, Boku N, Hishida T, Ohde Y, Sakao Y, Yoshiya K, Higashiyama M, Kameyama K, Adachi H, Shiomi K, Kanzaki M, Yoshimura M, Matsuura M, Hata Y, Chen F, Yoshida K, Sasaki H, Horio H, Takenoyama M, Yamashita M, Hashimoto T, Fujita A, Okumura M, Funai K, Asano H, Suzuki M, Shiraishi Y, Nakayama M, Yamada S, Hoshi E, Yamazaki N, Matsuo T, Miyazawa H, Sato Y, Takao M, Nakamura H, Nakayama H, Shimizu K, Watanabe T, Suzuki H, Kataoka M, Tsunezuka Y, Akamine S, Kadokura M, Hyodo I, Nakata M, Mori K, Kondo H. O-089OUTCOMES OF SEGMENTECTOMY AND WEDGE RESECTION FOR PULMONARY COLORECTAL CANCER METASTASES. Interact Cardiovasc Thorac Surg 2016. [DOI: 10.1093/icvts/ivw260.88] [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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25
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Abstract
L10 MnAl, which is a nonequilibrium ferromagnetic phase, is fabricated successfully with various compositions via high-pressure synthesis. The L10 phase is observed at pressures higher than 5 GPa, indicating that the volume effect is crucial for the stabilization of this phase. The employed synthesis route does not require a Mn-rich ε-phase, which has conventionally been used as the precursor compound. This allows for the synthesis of the L10 phase with a near-stoichiometric composition. In addition to variations in the composition in terms of the Mn/Al ratio, the axial ratio (c/a) as well as the ordering parameter (S) are modified systematically, with the maximum c/a and S values corresponding to the stoichiometric composition. With this structural change, the highest coercive force is also observed at the stoichiometric composition.
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Affiliation(s)
- Y Kinemuchi
- National Institute of Advanced Industrial and Science and Technology (AIST), Nagoya 463-8560, Japan.
| | - A Fujita
- National Institute of Advanced Industrial and Science and Technology (AIST), Nagoya 463-8560, Japan.
| | - K Ozaki
- National Institute of Advanced Industrial and Science and Technology (AIST), Nagoya 463-8560, Japan.
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Fujita A, Waga C, Hachiya Y, Kurihara E, Kumada S, Takeshita E, Nakagawa E, Inoue K, Miyatake S, Tsurusaki Y, Nakashima M, Saitsu H, Goto YI, Miyake N, Matsumoto N. Different X-linked KDM5C mutations in affected male siblings: is maternal reversion error involved? Clin Genet 2016; 90:276-81. [PMID: 26919706 DOI: 10.1111/cge.12767] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 02/12/2016] [Accepted: 02/23/2016] [Indexed: 02/02/2023]
Abstract
Genetic reversion is the phenomenon of spontaneous gene correction by which gene function is partially or completely rescued. However, it is unknown whether this mechanism always correctly repairs mutations, or is prone to error. We investigated a family of three boys with intellectual disability, and among them we identified two different mutations in KDM5C, located at Xp11.22, using whole-exome sequencing. Two affected boys have c.633delG and the other has c.631delC. We also confirmed de novo germline (c.631delC) and low-prevalence somatic (c.633delG) mutations in their mother. The two mutations are present on the same maternal haplotype, suggesting that a postzygotic somatic mutation or a reversion error occurred at an early embryonic stage in the mother, leading to switched KDM5C mutations in the affected siblings. This event is extremely unlikely to arise spontaneously (with an estimated probability of 0.39-7.5 × 10(-28) ), thus a possible reversion error is proposed here to explain this event. This study provides evidence for reversion error as a novel mechanism for the generation of somatic mutations in human diseases.
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Affiliation(s)
- A Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - C Waga
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Y Hachiya
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - E Kurihara
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - S Kumada
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - E Takeshita
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.,Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - E Nakagawa
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.,Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - K Inoue
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - S Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y Tsurusaki
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - M Nakashima
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - H Saitsu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Y-I Goto
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan.,Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - N Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - N Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
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Nishii T, Kono AK, Nishio M, Negi N, Fujita A, Kohmura E, Sugimura K. Bone-Subtracted Spinal CT Angiography Using Nonrigid Registration for Better Visualization of Arterial Feeders in Spinal Arteriovenous Fistulas. AJNR Am J Neuroradiol 2015; 36:2400-6. [PMID: 26251431 DOI: 10.3174/ajnr.a4435] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/29/2015] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Pretreatment diagnosis for the location of shunts and arterial feeders of spinal arteriovenous fistulas is crucial. This study aimed to evaluate the utility of subtracted CT angiography imaging by using nonrigid registration (R-CTA) in patients with spinal arteriovenous fistulas compared with conventional CTA imaging. MATERIALS AND METHODS The records of 15 consecutive subjects (mean age, 65 years; 2 women) who had undergone CTA and digital subtraction angiography for clinically suspected spinal arteriovenous fistula were reviewed. From CTA images obtained at the arterial and late arterial phases, warped images of the late arterial phase were obtained by using nonrigid registration that was adjusted to the arterial phase images. R-CTA images were then obtained by subtracting the warped images from the arterial phase images. The accuracies of using nonrigid registration and conventional spinal CTA and the time required for detecting arterial feeders in spinal arteriovenous fistulas were analyzed for each patient with DSA results as a standard reference. The difference between R-CTA and conventional spinal CTA was assessed by the Welch test and the McNemar χ(2) test. RESULTS R-CTA had a higher accuracy compared with conventional spinal CTA (80% versus 47%, P = .025). The time for interpretation was reduced in R-CTA compared with conventional spinal CTA (45.1 versus 97.1 seconds, P = .002). CONCLUSIONS Our subtracted CTA imaging by using nonrigid registration detects feeders of spinal arteriovenous fistulas more accurately and quickly than conventional CTA.
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Affiliation(s)
- T Nishii
- From the Departments of Radiology (T.N., A.K.K., M.N., K.S.)
| | - A K Kono
- From the Departments of Radiology (T.N., A.K.K., M.N., K.S.)
| | - M Nishio
- From the Departments of Radiology (T.N., A.K.K., M.N., K.S.)
| | - N Negi
- Division of Radiology (N.N.), Center for Radiology and Radiation Oncology, Kobe University Hospital, Kobe, Japan
| | - A Fujita
- Neurosurgery (A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - E Kohmura
- Neurosurgery (A.F., E.K.), Kobe University Graduate School of Medicine, Kobe, Japan
| | - K Sugimura
- From the Departments of Radiology (T.N., A.K.K., M.N., K.S.)
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28
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Li B, Fujita A, Buch K, Sakai O. TU-G-204-06: Correlation Between Texture Analysis-Based Model Observer and Human Observer in Diagnosis of Ischemic Infarct in Non-Contrast Head CT of Adults. Med Phys 2015. [DOI: 10.1118/1.4925770] [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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29
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Watanabe M, Buch K, Fujita A, Christiansen CL, Jara H, Sakai O. MR relaxometry for the facial ageing assessment: the preliminary study of the age dependency in the MR relaxometry parameters within the facial soft tissue. Dentomaxillofac Radiol 2015; 44:20150047. [PMID: 25974063 DOI: 10.1259/dmfr.20150047] [Citation(s) in RCA: 7] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVES To investigate the location-specific tissue properties and age-related changes of the facial fat and facial muscles using quantitative MRI (qMRI) analysis of longitudinal magnetization (T1) and transverse magnetization (T2) values. METHODS 38 subjects (20 males and 18 females, 0.5-87 years old) were imaged with a mixed turbo-spin echo sequence at 1.5 T. T1 and T2 measurements were obtained within regions of interest in six facial fat regions including the buccal fat and subcutaneous cheek fat, four eyelid fat regions (lateral upper, medial upper, lateral lower and medial lower) and five facial muscles including the orbicularis oculi, orbicularis oris, buccinator, zygomaticus major and masseter muscles bilaterally. RESULTS Within the zygomaticus major muscle, age-associated T1 decreases in females and T1 increases in males were observed in later life with an increase in T2 values with age. The orbicularis oculi muscles showed lower T1 and higher T2 values compared to the masseter, orbicularis oris and buccinator muscles, which demonstrated small age-related changes. The dramatic age-related changes were also observed in the eyelid fat regions, particularly within the lower eyelid fat; negative correlations with age in T1 values (p<0.0001 for age) and prominent positive correlation in T2 values in male subjects (p<0.0001 for male×age). Age-related changes were not observed in T2 values within the subcutaneous cheek fat. CONCLUSIONS This study demonstrates proof of concept using T1 and T2 values to assess age-related changes of the facial soft tissues, demonstrating tissue-specific qMRI measurements and non-uniform ageing patterns within different regions of facial soft tissues.
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Affiliation(s)
- M Watanabe
- 1 Department of Radiology, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA
| | - K Buch
- 1 Department of Radiology, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA
| | - A Fujita
- 1 Department of Radiology, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA
| | - C L Christiansen
- 2 Department of Health Policy and Management, Boston University School of Public Health, Boston, MA, USA
| | - H Jara
- 1 Department of Radiology, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA
| | - O Sakai
- 1 Department of Radiology, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA.,3 Department of Otolaryngology-Head and Neck Surgery, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA.,4 Department of Radiation Oncology, Boston Medical Center, Boston University School of Medicine, Boston, MA, USA
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30
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Honjo I, Fujita A, Kurata K, Takahashi H. Significance of adenoidectomy in the treatment of secretory otitis media. Adv Otorhinolaryngol 2015; 47:246-50. [PMID: 1456142 DOI: 10.1159/000421752] [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] [Indexed: 12/27/2022]
Affiliation(s)
- I Honjo
- Department of Otolaryngology, Faculty of Medicine, Kyoto University, Japan
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Fujii H, Fujita A, Yang A, Kanazawa H, Buch K, Sakai O, Sugimoto H. Visualization of the Peripheral Branches of the Mandibular Division of the Trigeminal Nerve on 3D Double-Echo Steady-State with Water Excitation Sequence. AJNR Am J Neuroradiol 2015; 36:1333-7. [PMID: 25836724 DOI: 10.3174/ajnr.a4288] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Accepted: 12/17/2014] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although visualization of the extracranial branches of the cranial nerves has improved with advances in MR imaging, only limited studies have assessed the detection of extracranial branches of the mandibular nerve (V3). We investigated the detectability of the branches of V3 on a 3D double-echo steady-state with water excitation sequence. MATERIALS AND METHODS We retrospectively evaluated the detectability of the 6 branches of the V3, the masseteric, buccal, auriculotemporal, lingual, inferior alveolar, and mylohyoid nerves, by using a 5-point scale (4, excellent; 3, good; 2, fair; 1, poor; and 0, none) in 86 consecutive patients who underwent MR imaging with the 3D double-echo steady-state with water excitation sequence. Weighted κ analysis was used to calculate interobserver variability among the 3 readers. RESULTS The detection of the lingual and inferior alveolar nerves was the most successful, with excellent average scores of 3.80 and 3.99, respectively. The detection of the masseteric, the buccal, and the auriculotemporal nerves was good, with average scores of 3.31, 2.67, and 3.11, respectively. The mylohyoid nerve was difficult to detect with poor average scores of 0.62. All nerves had excellent interobserver variability across the 3 readers (average weighted κ value, 0.95-1.00). CONCLUSIONS The 3D double-echo steady-state with water excitation sequence demonstrated excellent visualization of the extracranial branches of V3 in most patients. The 3D double-echo steady-state with water excitation sequence has the potential for diagnosing V3 pathologies and preoperatively identifying peripheral cranial nerves to prevent surgical complications.
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Affiliation(s)
- H Fujii
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan
| | - A Fujita
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan Departments of Radiology (A.F., K.B., O.S.)
| | - A Yang
- Boston University School of Medicine (A.Y.), Boston, Massachusetts
| | - H Kanazawa
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan
| | - K Buch
- Departments of Radiology (A.F., K.B., O.S.)
| | - O Sakai
- Departments of Radiology (A.F., K.B., O.S.) Otolaryngology-Head and Neck Surgery (O.S.) Radiation Oncology (O.S.), Boston Medical Center
| | - H Sugimoto
- From the Department of Radiology (H.F., A.F., H.K., H.S.), Jichi Medical University School of Medicine, Tochigi, Japan
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32
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Buch K, Fujita A, Li B, Kawashima Y, Qureshi MM, Sakai O. Using Texture Analysis to Determine Human Papillomavirus Status of Oropharyngeal Squamous Cell Carcinomas on CT. AJNR Am J Neuroradiol 2015; 36:1343-8. [PMID: 25836725 DOI: 10.3174/ajnr.a4285] [Citation(s) in RCA: 107] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Accepted: 12/28/2014] [Indexed: 12/17/2022]
Abstract
BACKGROUND AND PURPOSE Human papillomavirus-associated oropharyngeal squamous cell carcinoma is increasing in prevalence and typically occurs in younger patients than human papillomavirus-negative squamous cell carcinoma. While imaging features of human papillomavirus-positive versus human papillomavirus-negative squamous cell carcinoma nodal metastases have been described, characteristics distinguishing human papillomavirus-positive from human papillomavirus-negative primary squamous cell carcinomas have not been well established. The purpose of this project was to evaluate the use of texture features to distinguish human papillomavirus-positive and human papillomavirus-negative primary oropharyngeal squamous cell carcinoma. MATERIALS AND METHODS Following institutional review board approval, 40 patients with primary oropharyngeal squamous cell carcinoma and known human papillomavirus status who underwent contrast-enhanced CT between December 2009 and October 2013 were included in this study. Segmentation of the primary lesion was manually performed with a semiautomated graphical-user interface. Following segmentation, an in-house-developed texture analysis program extracted 42 texture features from each segmented volume. A t test was used to evaluate differences in texture parameters between human papillomavirus-positive and human papillomavirus-negative squamous cell carcinomas. RESULTS Of the 40 included patients, 29 had human papillomavirus-positive oropharyngeal squamous cell carcinoma and 11 had human papillomavirus-negative oropharyngeal squamous cell carcinoma. Significant differences were seen in the histogram parameters median (P = .006) and entropy (P = .016) and squamous cell carcinoma entropy (P = .043). CONCLUSIONS There are statistically significant differences in some texture features between human papillomavirus-positive and human papillomavirus-negative oropharyngeal tumors. Texture analysis may be considered an adjunct to the evaluation of human papillomavirus status and characterization of squamous cell carcinoma.
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Affiliation(s)
- K Buch
- From the Departments of Radiology (K.B., A.F., B.L., Y.K., O.S.)
| | - A Fujita
- From the Departments of Radiology (K.B., A.F., B.L., Y.K., O.S.)
| | - B Li
- From the Departments of Radiology (K.B., A.F., B.L., Y.K., O.S.)
| | - Y Kawashima
- From the Departments of Radiology (K.B., A.F., B.L., Y.K., O.S.)
| | | | - O Sakai
- From the Departments of Radiology (K.B., A.F., B.L., Y.K., O.S.) Radiation Oncology (M.M.Q., O.S.) Otolaryngology-Head and Neck Surgery (O.S.), Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts.
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Molina ES, Fujita A, Sogayar MC, Demasi MA. A quantitative and humane tail bleeding assay for efficacy evaluation of antihaemophilic factors in haemophilia A mice. Haemophilia 2014; 20:e392-8. [PMID: 24975823 DOI: 10.1111/hae.12484] [Citation(s) in RCA: 8] [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] [Subscribe] [Scholar Register] [Accepted: 05/21/2014] [Indexed: 01/28/2023]
Abstract
The tail bleeding model using haemophilic mice has been used as one of the standard assays for efficacy evaluation of novel antihaemophilic therapies at the preclinical level. A number of different configurations and endpoints have been proposed in the literature for this model, hindering interlaboratory comparisons. A particular configuration, known as the tail bleeding survival assay (TBS), adopted by several groups, involves measuring the ability of conscious haemophilic mice to survive exsanguination following tail transection. Major limitations to this configuration include ethical constraints and impaired quantitative determinations. The aim of this study was to standardize and validate a quantitative haemostatic assay for evaluation of antihaemophilic therapies employing an alternative to TBS, which involves a more humane endpoint associated with stable clot formation. Haemophilic mice were treated with vehicle or different doses of two antihaemophilic reference products licensed in Brazil. The haemostatic response was evaluated by our quantitative tail bleeding haemostatic assay (qTBA) over a period of 120 min and then quantified by dose-response modelling. We demonstrate that our qTBA method allows a direct relationship between the number of animals which achieved full haemostatic response and the dosage of both antihaemophilic factors evaluated over 120 min. In addition, the method sensitivity is suitable to demonstrate the conversion from a severe to a moderate haemophilia phenotype. Our proposed qTBA is easy to implement and constitutes an alternative and more ethical endpoint, which could be effectively used as a surrogate to the commonly employed survival endpoint, allowing quantitative haemostatic response evaluation associated with stable clot formation.
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Affiliation(s)
- E S Molina
- Department of Biochemistry Chemistry Institute, NUCEL-NETCEM, School of Medicine, University of São Paulo, São Paulo, SP, Brazil
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Okada N, Sasaguri K, Otsuka T, Fujita A, Ito H, Noguchi T, Jinbu Y, Kusama M. Effect of articulatory rehabilitation after oral cancer surgery on higher brain activation. Int J Oral Maxillofac Surg 2014; 43:933-40. [PMID: 24679850 DOI: 10.1016/j.ijom.2014.02.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Revised: 02/22/2014] [Accepted: 02/25/2014] [Indexed: 11/17/2022]
Abstract
The present study aimed to verify the importance of postoperative articulatory rehabilitation in patients with oral cancer and to clarify the neurological changes underlying articulatory functional recovery. A longitudinal assessment of oral function and accompanying brain activity was performed using non-invasive functional magnetic resonance imaging (fMRI). We assessed 13 patients with cancers of the tongue and oral floor before and after ablative surgery. Articulatory function was assessed preoperatively and postoperatively using a conversation intelligibility test and the Assessment of Motor Speech for Dysarthria test. Patients also performed a verbal task during fMRI scans. The assessments were then repeated after the patients had undergone 4-6 months of articulatory rehabilitation therapy. Compared to pretreatment levels, articulatory rehabilitation resulted in a significant increase in activation in the supplementary motor cortex, thalamus, and cingulate cortex. The present study offers a quantitative assessment of the effects of speech rehabilitation by investigating changes in brain activation sites.
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Affiliation(s)
- N Okada
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan.
| | - K Sasaguri
- Department of Craniofacial Growth and Development Dentistry, Kanagawa Dental College, Kanagawa, Japan
| | - T Otsuka
- Department of Craniofacial Growth and Development Dentistry, Kanagawa Dental College, Kanagawa, Japan
| | - A Fujita
- Department of Radiology, Jichi Medical University, Tochigi, Japan
| | - H Ito
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - T Noguchi
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - Y Jinbu
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
| | - M Kusama
- Department of Dentistry, Oral and Maxillofacial Surgery, Jichi Medical University, Tochigi, Japan
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35
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Miura Y, Fujimoto S, Yoshida T, Fujita A, Minato K. A Retrospective Analysis of 18 Patients with Advanced Thymic Carcinoma Who Received Chemotherapy at This Institution. Ann Oncol 2013. [DOI: 10.1093/annonc/mdt459.65] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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36
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de Siqueira Santos S, Takahashi DY, Nakata A, Fujita A. A comparative study of statistical methods used to identify dependencies between gene expression signals. Brief Bioinform 2013; 15:906-18. [DOI: 10.1093/bib/bbt051] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [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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37
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Buch K, Nadgir RN, Tannenbaum AD, Ozonoff A, Fujita A, Sakai O. Clinical significance of trochlear calcifications in the orbit. AJNR Am J Neuroradiol 2013; 35:573-7. [PMID: 23945224 DOI: 10.3174/ajnr.a3697] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND PURPOSE Trochlear calcification is frequently seen on CT scans that include the orbits, but prior studies linking this finding to diabetes mellitus were based on selected populations by using relatively thick sections. We assessed the relationship between trochlear calcification and diabetes mellitus and other chronic medical conditions in an unrestricted population by using thin-section CT. MATERIALS AND METHODS Noncontrast head CT studies performed consecutively on 1000 patients between January and February 2011 were retrospectively reviewed for the presence of trochlear calcifications. Axial 1.25-mm-thick images acquired by 64-detector row CT were reviewed. Medical records were reviewed for chronic medical conditions, including diabetes mellitus, chronic kidney disease, alcoholism, autoimmune conditions, endocrine disorders, serum calcium and alkaline phosphatase levels, and HIV status. Motion-limited studies and patients with limited clinical data were excluded. Statistical analyses were performed by using the Fisher exact test. RESULTS Thirty-two patients were excluded from analysis. Of the remaining 968 patients, 128 had trochlear calcification (13%). No significant association was observed between diabetes mellitus and trochlear calcifications in patients of any age (P = .40). There was no significant correlation between trochlear calcifications and chronic kidney disease, alcoholism, endocrine disorders, or HIV infection. Statistically significant associations among trochlear calcification, autoimmune conditions, and elevated alkaline phosphatase levels were observed (P < .0001 and P < .0001, respectively). CONCLUSIONS On the basis of a large unrestricted population with thin-section CT imaging of the orbit, no significant association was observed between trochlear calcifications and diabetes mellitus. A statistically significant association was observed between trochlear calcification and autoimmune disease and elevated alkaline phosphatase levels.
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Affiliation(s)
- K Buch
- From the Departments of Radiology (K.B., R.N.N., A.D.T., A.F., O.S.)
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38
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Otsuka T, Dan H, Dan I, Sase M, Sano T, Tsuzuki D, Fujita A, Sasaguri K, Okada N, Kusama M, Jinbu Y, Watanabe E. Effect of local anesthesia on trigeminal somatosensory-evoked magnetic fields. J Dent Res 2012; 91:1196-201. [PMID: 23018817 DOI: 10.1177/0022034512462398] [Citation(s) in RCA: 4] [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] [Indexed: 11/17/2022] Open
Abstract
For objective neurophysiological evaluation of the function of the trigeminal system, magnetoencephalography- based TSEF (trigeminal somatosensory-evoked field) assessment would be valuable in providing spatial and temporal profiles of cortical responses. However, this necessitates knowledge of how TSEF varies with trigeminal nerve dysfunctions. We introduced a conduction block of the trigeminal nerve using local anesthesia (lidocaine) to temporally mimic nerve dysfunctions, and monitored TSEF changes. Following an electrical stimulation of the lower lip, a magnetic response with peak latency of approximately 20 ms was identified in all participants. Dipole for the peak was estimated on the post-central gyrus in the participant's own magnetic resonance image. After normalization to Montreal Neurological Institute (MNI) space and inter-participant data integration, the summary equivalent current dipole localization among participants remained in the post-central gyrus, suggesting validity of the use of MNI space. Partial anesthesia of the lower lip led to a loss of the waveform characteristics of TSEF for electrical stimulation to the trigeminal nerve. We verified that the 20-ms latency cortical response of TSEF components localized at the primary sensory cortex can serve as a robust neurofunctional marker of experimental trigeminal nerve dysfunction.
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Affiliation(s)
- T Otsuka
- Department of Craniofacial Growth and Developmental Dentistry, Kanagawa Dental College, 82 Inaoka-cho, Yokosuka, Kanagawa 238-8580, Japan
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39
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Yoshikawa K, Fujita A, Murayama N, Matsunami T, Mamuro T. Fallout particles in the ground-level air from the Chinese nuclear explosion of December 28, 1966. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/jb073i012p03637] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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40
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41
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Nakai T, Koyama J, Fujita A, Taniguchi M, Kohmura E. Preoperative Detection of the Facial Nerve Location Using Balanced Fast Field Echo and Diffusion Tensor Imaging in Patients with Large Cerebellopontine Angle Tumors. Skull Base Surg 2012. [DOI: 10.1055/s-0032-1314183] [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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42
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Laetitia K, Caroline P, Roxane V, Denis F, Fitsum GE, Christophe S, Liu F, Huang Y, Fu P, Morito N, Morito N, Yoh K, Fujita A, Takahashi S, Yamagata K, Fang L, Radovits T, Merkely B, Mozes MM, Rosivall L, Kokeny G, Riera M, Riera M, Marquez E, Gimeno J, Roca H, Clotet S, Juanpere N, Lloreta J, Pascual J, Soler M, Checherita IA, Checherita IA, Niculae A, Ciocalteu A. Diabetes basic research. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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43
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Akutsu N, Hosoda K, Fujita A, Kohmura E. A preliminary prediction model with MR plaque imaging to estimate risk for new ischemic brain lesions on diffusion-weighted imaging after endarterectomy or stenting in patients with carotid stenosis. AJNR Am J Neuroradiol 2012; 33:1557-64. [PMID: 22403782 DOI: 10.3174/ajnr.a3002] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [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
BACKGROUND AND PURPOSE Findings on MR imaging of carotid plaques correlate with histologic findings and may be useful in identifying vulnerable plaques. The objective of this study was to show how MR imaging findings and clinical factors could be used to construct a preliminary model and a nomogram for predicting the risk of new ischemic lesions on DWI following CEA or CAS. MATERIALS AND METHODS One hundred four patients with carotid stenosis undergoing treatment (63 CEA, 41 CAS) were prospectively enrolled (mean age, 71.7 ± 7.0 years; 11 women). T1-SIR and T2-SIR of carotid plaque were measured on MR imaging. Associations among carotid MR imaging findings, treatment procedures, degree of stenosis, cardiovascular risk factors, and occurrence of new ischemic lesions on DWI 1 day after treatment were studied by multivariate logistic regression. RESULTS One stroke occurred after CAS (2.4%), and none after CEA. New DWI lesions after treatment were observed in 25 patients (24%). Our preliminary prediction model demonstrated that T1-SIR (OR [per 0.5 increase], 3.99; 95% CI, 2.18-7.31; P < .0001) and CAS (OR, 2.06; 95% CI, 1.01-4.24; P = .048 compared with CEA) were positively associated with new DWI lesions on posttreatment DWI scans. T2-SIR (OR [per 0.5 increase], 0.74; 95% CI, 0.55-0.98; P = .037) was negatively associated. The C-index of this model was 0.79 (95% CI, 0.69-0.89), which indicated some utility in predicting the response. CONCLUSIONS Our preliminary prediction model and nomogram may provide an individualized risk estimate of new ischemic lesions after CEA or CAS and useful information for decision-making regarding treatment strategy.
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Affiliation(s)
- N Akutsu
- Department of Neurosurgery, Kobe University Graduate School of Medicine, Kobe, Japan
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44
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Kondo S, Mukudai Y, Yazawa K, Banka S, Kamatani K, Fujita A, Yoshihama Y, Shirota T, Shintani S. Effects of 3 herbal products on osteoclasts, osteoblasts and chondrocytes as novel drugs for osteoporosis. Int J Oral Maxillofac Surg 2011. [DOI: 10.1016/j.ijom.2011.07.637] [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: 10/16/2022]
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45
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Umetsu RY, Fujita A, Ito W, Kanomata T, Kainuma R. Determination of the magnetic ground state in the martensite phase of Ni-Mn-Z (Z = In, Sn and Sb) off-stoichiometric Heusler alloys by nonlinear AC susceptibility. J Phys Condens Matter 2011; 23:326001. [PMID: 21785185 DOI: 10.1088/0953-8984/23/32/326001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
DC and AC magnetic measurements were carried out to clarify the difference in the magnetic ground state depending on the kinds of Z element used in the martensite phase in Ni-Mn-Z (Z = In, Sn and Sb) off-stoichiometric Heusler alloys. Magnetic field cooling effects were observed in the DC thermomagnetization curves in the low temperature regions, and a frequency dependence on AC susceptibility was also observed in both real and imaginary parts of the susceptibility. Negative divergence was clearly observed in nonlinear AC susceptibility only for the Ni(50)Mn(40)Sb(10) alloy, suggesting that the magnetic feature of its ground state is the spin-glass state. The magnetic ground state of the martensite phase in these alloys would relate to the magnetic configuration of the Mn atoms in the ferromagnetic austenite phase.
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Affiliation(s)
- R Y Umetsu
- Institute for Materials Research, Tohoku University, Sendai, 980-8577, Japan
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46
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Uchihashi Y, Hosoda K, Zimine I, Fujita A, Fujii M, Sugimura K, Kohmura E. Clinical application of arterial spin-labeling MR imaging in patients with carotid stenosis: quantitative comparative study with single-photon emission CT. AJNR Am J Neuroradiol 2011; 32:1545-51. [PMID: 21757531 DOI: 10.3174/ajnr.a2525] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [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
BACKGROUND AND PURPOSE Arterial spin-labeling is an emerging technique for noninvasive measurement of cerebral perfusion, but concerns remain regarding the reliability of CBF quantification and clinical applications. Recently, an ASL implementation called QUASAR was proposed, and it was shown to have good reproducibility of CBF assessment in healthy volunteers. This study aimed to determine the utility of QUASAR for CBF assessment in patients with cerebrovascular diseases. MATERIALS AND METHODS Twenty patients with carotid stenosis underwent CBF quantification by ASL (QUASAR) within 3 days of performance of (123)I-iodoamphetamine-SPECT. CVR to acetazolamide also was assessed by ASL and SPECT. In surgically treated patients, the respective scans before and after the procedures were compared. RESULTS Regional CBF and CVR values measured by ASL were significantly correlated and agreed with those measured by SPECT (r(s) = 0.92 and 0.88, respectively). A Bland-Altman plot demonstrated good agreement between 2 methods in terms of CBF quantification. Furthermore, ASL could detect pathologic states such as hypoperfusion, impaired vasoreactivity, and postoperative hyperperfusion, equivalent to SPECT. However, ASL tended to overestimate CBF values especially in high-perfusion regions. CONCLUSIONS ASL perfusion MR imaging is clinically applicable and can be an alternative method for CBF assessment in patients with cerebrovascular diseases.
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Affiliation(s)
- Y Uchihashi
- Department of Neurosurgery, Kobe University Graduate School of Medicine, Japan
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47
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Fujita A, Nakazato Y, Tachibana K, Suda K, Yoshida T, Tanaka R, Goya T. [Subscapular elastofibroma]. Kyobu Geka 2011; 64:390-393. [PMID: 21591441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Elastofibroma is a tumor that is localized mainly at the subscapular region. We report 2 cases of subscapular elastofibromas. Case 1, 75-year-old woman was seen at the hospital because of a left dorsal tumor. Computed tomography (CT) scan revealed the tumor of 6 cm in diameter in the inferior angle of left scapula. The patient underwent excision of the tumor. Case 2, 90-year-old man underwent excision a tumor of 5 cm in diameter in the inferior angle of right scapula simultaneously with the operation of right lung cancer. Histological examinations showed increased elastic fiber with elastica van Gieson staining. These specimens confirmed the diagnosis of elastofibroma There have been no signs of recurrence after surgery.
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Affiliation(s)
- A Fujita
- Department of Thoracic Surgery, Gunma Prefectural Cancer Center, Ota, Japan
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48
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Affiliation(s)
- T Kawakami
- Department of Dermatology, St. Marianna University School of Medicine, Kawasaki, Kanagawa, Japan.
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49
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Sato JR, Thomaz CE, Cardoso EF, Fujita A, Morais-Martin MG, Amaro E. Individual latent state scoring based on Hyperplane Navigation. Neuroimage 2009. [DOI: 10.1016/s1053-8119(09)70544-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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50
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Morito H, Oikawa K, Fujita A, Fukamichi K, Kainuma R, Ishida K. Stress-assisted large magnetic-field-induced strain in single-variant Co-Ni-Ga ferromagnetic shape memory alloy. J Phys Condens Matter 2009; 21:256002. [PMID: 21828446 DOI: 10.1088/0953-8984/21/25/256002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The magnetic anisotropy and the magnetic-field-induced strain (MFIS) in a single-variant Co(47.5)Ni(22.5)Ga(30.0) ferromagnetic shape memory alloy (FSMA) have been investigated. From the magnetization curves for the single crystal, the hard c-axis was confirmed, and the uniaxial magnetic anisotropy constant K(u) at 300 K was evaluated to be -1.07 × 10(6) erg cm(-3) for the single-variant Co(47.5)Ni(22.5)Ga(30.0) martensite phase. The magnitude of compressive shear stress for the variant rearrangement was estimated to be 6.0-7.5 MPa from the stress-strain curves. An assisted stress τ(assist) of 6.0 MPa was applied before applying a magnetic field, and then a magnetic stress τ(mag) of 0.3 MPa was added. As a result, a large MFIS of about 7.6 % was obtained at room temperature in the martensite phase of the single-variant Co(47.5)Ni(22.5)Ga(30.0).
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Affiliation(s)
- H Morito
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Katahira 2-1-1, Sendai 980-8577, Japan
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