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Nakaya Y, Hayashi K, Suzuki A, Asano R, Hayashi K, Fujita K, Kawabata K, Kobayashi Y, Sato M. Treatment of Intracranial Hemorrhage Induced Hemichorea- Hemiballism by Low-Frequency Repetitive Transcranial Magnetic Stimulation. Acta Neurol Taiwan 2024; 33(2):88-89. [PMID: 37968091] [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: 11/17/2023]
Abstract
An 80-year-old woman with a history of rheumatoid arthritis, hypertension, and hyperlipidemia, and no family history of hyperkinesis developed suddenly involuntary movement and visited our hospital two-day after onset. Neuro-examination revealed hemichorea-hemiballismus in the right side of the body, including the face (Suppl. video). Blood tests revealed neither hyperglycemia nor acanthocyte. Brain MRI showed acute microbleeding in the left subthalamic nucleus (Figure 1A-C). Although she was treated with haloperidol (max. 4.5 mg/day), hemichorea-hemiballismus did not subside. Repetitive transcranial magnetic stimulation (rTMS) with a low-frequency protocol (LFP) (1 Hz, 1200 pulses, with a stimulus intensity of 90% of the resting motor threshold, 3 days/week for 2-week) was applied to the left precentral knob (Figure 1D). Its effect was drastic, as the symptoms disappeared for half-hour after rTMS. Hemichorea-hemiballism then reappeared but was attenuated by repeated rTMS. The symptoms disappeared after one-month. Subthalamic nucleus lesions can develop hemichorea-hemiballism (1). According to a study on Huntington's disease and diabetic hemichorea-hemiballism, increased thalamocortical drive may increase the excitability of excitatory and inhibitory circuits of the frontal cortex as the etiologies of hyperkinesia (2-3). However, the target points of rTMS in treating hemichorea-hemiballism have not been consistent in literature. Moreover, rTMS with a LFP on the bilateral supplementary motor areas is effective in treating chorea in Huntington's disease (2). Additionally, rTMS on the ipsilateral precentral knob (primary motor cortex) with continuous θ burst stimulation (cTBS), which decreases the excitability and inhibitory cortical circuits, was effective in treating contralateral hemichorea caused by midbrain hemorrhage (3). Similar to cTBS, LFP can suppress cortical excitation (4); therefore, we applied rTMS with LFP on the primary motor cortex to treat hemichorea-hemiballism. Our results were drastic for both short- and long-term efficiency. This is the first report of the efficacy of rTMS with LFP in treating hemichorea-hemiballism caused by encephalorrhagia.
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Affiliation(s)
- Yuka Nakaya
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Koji Hayashi
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Asuka Suzuki
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Rei Asano
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Kouji Hayashi
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Kazuki Fujita
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Kaori Kawabata
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Yasutaka Kobayashi
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Mamiko Sato
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
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Nakaya Y, Hayashi K, Suzuki A, Asano R, Hayashi K, Fujita K, Kawabata K, Kobayashi Y, Sato M. Treatment of Intracranial Hemorrhage Induced Hemichorea- Hemiballism by Low-Frequency Repetitive Transcranial Magnetic Stimulation. Acta Neurol Taiwan 2024; 33(2):93-94. [PMID: 38030220] [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: 12/01/2023]
Abstract
An 80-year-old woman with a history of rheumatoid arthritis, hypertension, and hyperlipidemia, and no family history of hyperkinesis developed suddenly involuntary movement and visited our hospital two-day after onset. Neuro-examination revealed hemichorea-hemiballismus in the right side of the body, including the face (Suppl. video). Blood tests revealed neither hyperglycemia nor acanthocyte. Brain MRI showed acute microbleeding in the left subthalamic nucleus (Figure 1A-C). Although she was treated with haloperidol (max. 4.5 mg/day), hemichorea-hemiballismus did not subside. Repetitive transcranial magnetic stimulation (rTMS) with a low-frequency protocol (LFP) (1 Hz, 1200 pulses, with a stimulus intensity of 90% of the resting motor threshold, 3 days/week for 2-week) was applied to the left precentral knob (Figure 1D). Its effect was drastic, as the symptoms disappeared for half-hour after rTMS. Hemichorea-hemiballism then reappeared but was attenuated by repeated rTMS. The symptoms disappeared after one-month. Subthalamic nucleus lesions can develop hemichorea-hemiballism (1). According to a study on Huntington's disease and diabetic hemichorea-hemiballism, increased thalamocortical drive may increase the excitability of excitatory and inhibitory circuits of the frontal cortex as the etiologies of hyperkinesia (2-3). However, the target points of rTMS in treating hemichorea-hemiballism have not been consistent in literature. Moreover, rTMS with a LFP on the bilateral supplementary motor areas is effective in treating chorea in Huntington's disease (2). Additionally, rTMS on the ipsilateral precentral knob (primary motor cortex) with continuous θ burst stimulation (cTBS), which decreases the excitability and inhibitory cortical circuits, was effective in treating contralateral hemichorea caused by midbrain hemorrhage (3). Similar to cTBS, LFP can suppress cortical excitation (4); therefore, we applied rTMS with LFP on the primary motor cortex to treat hemichorea-hemiballism. Our results were drastic for both short- and long-term efficiency. This is the first report of the efficacy of rTMS with LFP in treating hemichorea-hemiballism caused by encephalorrhagia.
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Affiliation(s)
- Yuka Nakaya
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Koji Hayashi
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Asuka Suzuki
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Rei Asano
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
| | - Kouji Hayashi
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Kazuki Fujita
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Kaori Kawabata
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Yasutaka Kobayashi
- Graduate School of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-City, Fukui 910-3190, Japan
| | - Mamiko Sato
- Department of Rehabilitation Medicine, Fukui General Hospital, 55-16-1 Egami, Fukui-City, Fukui 910- 8561, Japan
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Fujita K, Isozumi N, Zhu Q, Matsubayashi M, Taniguchi T, Arakawa H, Shirasaka Y, Mori E, Tamai I. Unique Binding Sites of Uricosuric Agent Dotinurad for Selective Inhibition of Renal Uric Acid Reabsorptive Transporter URAT1. J Pharmacol Exp Ther 2024:JPET-AR-2023-002096. [PMID: 38670801 DOI: 10.1124/jpet.124.002096] [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: 01/03/2024] [Revised: 03/22/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Dotinurad was developed as a uricosuric agent, inhibiting urate (UA) reabsorption through the UA transporter URAT1 in the kidneys. Due to its high selectivity for URAT1 among renal UA transporters, we investigated the mechanism underlying this selectivity by identifying dotinurad binding sites specific to URAT1. Dotinurad was docked to URAT1 using AutoDock4, utilizing the AlphaFold2-predicted structure. The inhibitory effects of dotinurad on wild-type and mutated URAT1 at the predicted binding sites were assessed through URAT1-mediated [14C]UA uptake in Xenopus oocytes. Nine amino acid residues in URAT1 were identified as dotinurad-binding sites. Sequence alignment with UA-transporting organic anion transporters (OATs) revealed that H142 and R487 were unique to URAT1 among renal UA-transporting OATs. For H142, IC50 values of dotinurad increased to 62, 55, and 76 nM for mutated URAT1 (H142A, H142E, and H142R, respectively), compared to 19 nM for the wild-type, indicating that H142 contributes to URAT1-selective interaction with dotinurad. H142 was predicted to interact with the phenyl-hydroxyl group of dotinurad. The IC50 of the hydroxyl group methylated dotinurad (F13141) was 165 μM, 8,420-fold higher than dotinurad, suggesting the interaction of H142 and the phenyl-hydroxyl group by forming a hydrogen bond. Regarding R487, URAT1-R487A exhibited a loss of activity. Interestingly, the URAT1-H142A/R487A double mutant restored UA transport activity, with the IC50 value of dotinurad for the mutant (388 nM) significantly higher than that for H142A (73.5 nM). These results demonstrate that H142 and R487 of URAT1 determine its selectivity for dotinurad, a uniqueness observed only in URAT1 among UA-transporting OATs. Significance Statement Dotinurad selectively inhibits the urate reabsorption transporter URAT1 in renal urate-transporting OATs. This study demonstrates that dotinurad interacts with H142 and R487 of URAT1, located in the extracellular domain and unique among OATs when aligning amino acid sequences. Mutations in these residues reduce affinity of dotinurad for URAT1, confirming their role in conferring selective inhibition. Additionally, the interaction between dotinurad and URAT1 involving H142 was found to mediate hydrogen bonding.
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Affiliation(s)
| | | | | | | | | | | | - Yoshiyuki Shirasaka
- Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Japan
| | - Eiichiro Mori
- Department of Future Basic Medicine, Nara Medical University, Japan
| | - Ikumi Tamai
- Facylty of Pharmaceutical Sciences, Kanazawa University, Japan
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Imamura R, Sugimoto M, Horike SI, Terakawa J, Fujita K, Tamai I, Daikoku T, Kato Y, Arakawa H. Role of Organic Anion Transporter NPT4 in Renal Handling of Uremic Toxin 3-indoxyl Sulfate. J Pharm Sci 2024:S0022-3549(24)00142-4. [PMID: 38641061 DOI: 10.1016/j.xphs.2024.04.014] [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: 01/19/2024] [Revised: 04/12/2024] [Accepted: 04/12/2024] [Indexed: 04/21/2024]
Abstract
Sodium-phosphate transporter NPT4 (SLC17A3) is a membrane transporter for organic anionic compounds localized on the apical membranes of kidney proximal tubular epithelial cells and plays a role in the urinary excretion of organic anionic compounds. However, its physiological role has not been sufficiently elucidated because its substrate specificity is yet to be determined. The present study aimed to comprehensively explore the physiological substrates of NPT4 in newly developed Slc17a3-/- mice using a metabolomic approach. Metabolomic analysis showed that the plasma concentrations of 11 biological substances, including 3-indoxyl sulfate, were more than two-fold higher in Slc17a3-/- mice than in wild-type mice. Moreover, urinary excretion of 3-indoxyl sulfate was reduced in Slc17a3-/- mice compared to that in wild-type mice. The uptake of 3-indoxyl sulfate by NPT4-expressing Xenopus oocytes was significantly higher than that by water-injected oocytes. The calculated Km and Vmax values for NPT4-mediated 3-indoxyl sulfate uptake were 4.52 ± 1.18 mM and 1.45 ± 0.14 nmol/oocyte/90 min, respectively. In conclusion, the present study revealed that 3-indoxyl sulfate is a novel substrate of NPT4 based on the metabolomic analysis of Slc17a3-/- mice, suggesting that NPT4 regulates systemic exposure to 3-indoxyl sulfate by regulating its urinary excretion.
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Affiliation(s)
- Rikako Imamura
- Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Masahiro Sugimoto
- Institute for Advanced Biosciences, Keio University, Tsuruoka, Yamagata 997-0052, Japan
| | - Shin-Ichi Horike
- Research Center for Experimental Modeling of Human Disease, Kanazawa University, Kanazawa 920-0934, Japan
| | - Jumpei Terakawa
- Laboratory of Toxicology, School of Veterinary Medicine, Azabu University, Sagamihara, Kanagawa 252-5201, Japan
| | - Kazuki Fujita
- Faculty of Pharmaceutical Science, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Ikumi Tamai
- Faculty of Pharmaceutical Science, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Takiko Daikoku
- Research Center for Experimental Modeling of Human Disease, Kanazawa University, Kanazawa 920-0934, Japan
| | - Yukio Kato
- Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan
| | - Hiroshi Arakawa
- Faculty of Pharmacy, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa 920-1192, Japan.
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Shibata M, Fujita K, Hoshino E, Minami K, Koizumi K, Okada S, Sakai F. Real-world experience with calcitonin gene-related peptide-targeted antibodies for migraine prevention: a retrospective observational cohort study at two Japanese headache centers. BMC Neurol 2024; 24:32. [PMID: 38238659 PMCID: PMC10795407 DOI: 10.1186/s12883-023-03521-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2023] [Accepted: 12/22/2023] [Indexed: 01/22/2024] Open
Abstract
BACKGROUND Although randomized controlled trials (RCTs) have shown that calcitonin gene-related peptide (CGRP)-targeted monoclonal antibodies (CGRP mAbs) are an efficacious and safe therapeutic modality for migraine prevention, their clinical benefits have not been well validated in Japanese patients in the real-world setting. The present study aimed to evaluate the real-world efficacy and safety of galcanezumab, fremanezumab, and erenumab in Japanese patients with migraine. METHODS This observational retrospective cohort study was conducted at two headache centers in Japan. Patients with migraine who had experienced treatment failure with at least one traditional oral migraine preventive agent were treated with a CGRP mAb de novo. The primary efficacy endpoints were the changes from baseline in monthly migraine days (MMDs) and Headache Impact Test-6 (HIT-6) score after 3 dosing intervals (V3). We explored whether demographic and clinical characteristics predicted therapeutic outcomes at V3. RESULTS Sixty-eight patients who completed three doses of a CGRP mAb (85.3% female [58/68], mean age: 46.2 ± 13.1 years) were included in the analysis. There were 19 patients with chronic migraine. The baseline MMDs were 13.4 ± 6.0. After 3 doses, the MMDs significantly decreased to 7.4 ± 5.5 (p < 0.0001), and the 50% response rate was 50.0%. HIT-6 score was significantly reduced from 66.7 ± 5.4 to 56.2 ± 8.7 after 3 doses (P = 0.0001). There was a positive correlation between the changes in MMDs and HIT-6 score from baseline after 2 doses (p = 0.0189). Those who achieved a ≥ 50% therapeutic response after the first and second doses were significantly more likely to do so at V3 (crude odds ratio: 3.474 [95% CI: 1.037 to 10.4], p = 0.0467). The most frequent adverse event was constipation (7.4%). None of the adverse events were serious, and there was no need for treatment discontinuation. CONCLUSIONS This real-world study demonstrated that CGRP mAbs conferred Japanese patients with efficacious and safe migraine prevention, and an initial positive therapeutic response was predictive of subsequent favorable outcomes. Concomitant measurement of MMDs and HIT-6 score was useful in evaluating the efficacy of CGRP mAbs in migraine prevention.
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Affiliation(s)
- Mamoru Shibata
- Department of Neurology, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba, 272-8513, Japan.
| | - Kazuki Fujita
- Saitama International Headache Center, Saitama Neuropsychiatric Institute, Saitama, Japan
| | - Eri Hoshino
- Saitama International Headache Center, Saitama Neuropsychiatric Institute, Saitama, Japan
| | - Kazushi Minami
- Department of Neurology, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba, 272-8513, Japan
| | - Kenzo Koizumi
- Department of Neurology, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba, 272-8513, Japan
| | - Satoshi Okada
- Department of Neurology, Tokyo Dental College Ichikawa General Hospital, 5-11-13 Sugano, Ichikawa, Chiba, 272-8513, Japan
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Staplin N, Haynes R, Judge PK, Wanner C, Green JB, Emberson J, Preiss D, Mayne KJ, Ng SYA, Sammons E, Zhu D, Hill M, Stevens W, Wallendszus K, Brenner S, Cheung AK, Liu ZH, Li J, Hooi LS, Liu WJ, Kadowaki T, Nangaku M, Levin A, Cherney D, Maggioni AP, Pontremoli R, Deo R, Goto S, Rossello X, Tuttle KR, Steubl D, Petrini M, Seidi S, Landray MJ, Baigent C, Herrington WG, Abat S, Abd Rahman R, Abdul Cader R, Abdul Hafidz MI, Abdul Wahab MZ, Abdullah NK, Abdul-Samad T, Abe M, Abraham N, Acheampong S, Achiri P, Acosta JA, Adeleke A, Adell V, Adewuyi-Dalton R, Adnan N, Africano A, Agharazii M, Aguilar F, Aguilera A, Ahmad M, Ahmad MK, Ahmad NA, Ahmad NH, Ahmad NI, Ahmad Miswan N, Ahmad Rosdi H, Ahmed I, Ahmed S, Ahmed S, Aiello J, Aitken A, AitSadi R, Aker S, Akimoto S, Akinfolarin A, Akram S, Alberici F, Albert C, Aldrich L, Alegata M, Alexander L, Alfaress S, Alhadj Ali M, Ali A, Ali A, Alicic R, Aliu A, Almaraz R, Almasarwah R, Almeida J, Aloisi A, Al-Rabadi L, Alscher D, Alvarez P, Al-Zeer B, Amat M, Ambrose C, Ammar H, An Y, Andriaccio L, Ansu K, Apostolidi A, Arai N, Araki H, Araki S, Arbi A, Arechiga O, Armstrong S, Arnold T, Aronoff S, Arriaga W, Arroyo J, Arteaga D, Asahara S, Asai A, Asai N, Asano S, Asawa M, Asmee MF, Aucella F, Augustin M, Avery A, Awad A, Awang IY, Awazawa M, Axler A, Ayub W, Azhari Z, Baccaro R, Badin C, Bagwell B, Bahlmann-Kroll E, Bahtar AZ, Baigent C, Bains D, Bajaj H, Baker R, Baldini E, Banas B, Banerjee D, Banno S, Bansal S, Barberi S, Barnes S, Barnini C, Barot C, Barrett K, Barrios R, Bartolomei Mecatti B, Barton I, Barton J, Basily W, Bavanandan S, Baxter A, Becker L, Beddhu S, Beige J, Beigh S, Bell S, Benck U, Beneat A, Bennett A, Bennett D, Benyon S, Berdeprado J, Bergler T, Bergner A, Berry M, Bevilacqua M, Bhairoo J, Bhandari S, Bhandary N, Bhatt A, Bhattarai M, Bhavsar M, Bian W, Bianchini F, Bianco S, Bilous R, Bilton J, Bilucaglia D, Bird C, Birudaraju D, Biscoveanu M, Blake C, Bleakley N, Bocchicchia K, Bodine S, Bodington R, Boedecker S, Bolduc M, Bolton S, Bond C, Boreky F, Boren K, Bouchi R, Bough L, Bovan D, Bowler C, Bowman L, Brar N, Braun C, Breach A, Breitenfeldt M, Brenner S, Brettschneider B, Brewer A, Brewer G, Brindle V, Brioni E, Brown C, Brown H, Brown L, Brown R, Brown S, Browne D, Bruce K, Brueckmann M, Brunskill N, Bryant M, Brzoska M, Bu Y, Buckman C, Budoff M, Bullen M, Burke A, Burnette S, Burston C, Busch M, Bushnell J, Butler S, Büttner C, Byrne C, Caamano A, Cadorna J, Cafiero C, Cagle M, Cai J, Calabrese K, Calvi C, Camilleri B, Camp S, Campbell D, Campbell R, Cao H, Capelli I, Caple M, Caplin B, Cardone A, Carle J, Carnall V, Caroppo M, Carr S, Carraro G, Carson M, Casares P, Castillo C, Castro C, Caudill B, Cejka V, Ceseri M, Cham L, Chamberlain A, Chambers J, Chan CBT, Chan JYM, Chan YC, Chang E, Chang E, Chant T, Chavagnon T, Chellamuthu P, Chen F, Chen J, Chen P, Chen TM, Chen Y, Chen Y, Cheng C, Cheng H, Cheng MC, Cherney D, Cheung AK, Ching CH, Chitalia N, Choksi R, Chukwu C, Chung K, Cianciolo G, Cipressa L, Clark S, Clarke H, Clarke R, Clarke S, Cleveland B, Cole E, Coles H, Condurache L, Connor A, Convery K, Cooper A, Cooper N, Cooper Z, Cooperman L, Cosgrove L, Coutts P, Cowley A, Craik R, Cui G, Cummins T, Dahl N, Dai H, Dajani L, D'Amelio A, Damian E, Damianik K, Danel L, Daniels C, Daniels T, Darbeau S, Darius H, Dasgupta T, Davies J, Davies L, Davis A, Davis J, Davis L, Dayanandan R, Dayi S, Dayrell R, De Nicola L, Debnath S, Deeb W, Degenhardt S, DeGoursey K, Delaney M, Deo R, DeRaad R, Derebail V, Dev D, Devaux M, Dhall P, Dhillon G, Dienes J, Dobre M, Doctolero E, Dodds V, Domingo D, Donaldson D, Donaldson P, Donhauser C, Donley V, Dorestin S, Dorey S, Doulton T, Draganova D, Draxlbauer K, Driver F, Du H, Dube F, Duck T, Dugal T, Dugas J, Dukka H, Dumann H, Durham W, Dursch M, Dykas R, Easow R, Eckrich E, Eden G, Edmerson E, Edwards H, Ee LW, Eguchi J, Ehrl Y, Eichstadt K, Eid W, Eilerman B, Ejima Y, Eldon H, Ellam T, Elliott L, Ellison R, Emberson J, Epp R, Er A, Espino-Obrero M, Estcourt S, Estienne L, Evans G, Evans J, Evans S, Fabbri G, Fajardo-Moser M, Falcone C, Fani F, Faria-Shayler P, Farnia F, Farrugia D, Fechter M, Fellowes D, Feng F, Fernandez J, Ferraro P, Field A, Fikry S, Finch J, Finn H, Fioretto P, Fish R, Fleischer A, Fleming-Brown D, Fletcher L, Flora R, Foellinger C, Foligno N, Forest S, Forghani Z, Forsyth K, Fottrell-Gould D, Fox P, Frankel A, Fraser D, Frazier R, Frederick K, Freking N, French H, Froment A, Fuchs B, Fuessl L, Fujii H, Fujimoto A, Fujita A, Fujita K, Fujita Y, Fukagawa M, Fukao Y, Fukasawa A, Fuller T, Funayama T, Fung E, Furukawa M, Furukawa Y, Furusho M, Gabel S, Gaidu J, Gaiser S, Gallo K, Galloway C, Gambaro G, Gan CC, Gangemi C, Gao M, Garcia K, Garcia M, Garofalo C, Garrity M, Garza A, Gasko S, Gavrila M, Gebeyehu B, Geddes A, Gentile G, George A, George J, Gesualdo L, Ghalli F, Ghanem A, Ghate T, Ghavampour S, Ghazi A, Gherman A, Giebeln-Hudnell U, Gill B, Gillham 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, Hernandez G, Hernandez Pena A, Hernandez-Cassis C, Herrington WG, Herzog C, Hewins S, Hewitt D, Hichkad L, Higashi S, Higuchi C, Hill C, Hill L, Hill M, Himeno T, Hing A, Hirakawa Y, Hirata K, Hirota Y, Hisatake T, Hitchcock S, Hodakowski A, Hodge W, Hogan R, Hohenstatt U, Hohenstein B, Hooi L, Hope S, Hopley M, Horikawa S, Hosein D, Hosooka T, Hou L, Hou W, Howie L, Howson A, Hozak M, Htet Z, Hu X, Hu Y, Huang J, Huda N, Hudig L, Hudson A, Hugo C, Hull R, Hume L, Hundei W, Hunt N, Hunter A, Hurley S, Hurst A, Hutchinson C, Hyo T, Ibrahim FH, Ibrahim S, Ihana N, Ikeda T, Imai A, Imamine R, Inamori A, Inazawa H, Ingell J, Inomata K, Inukai Y, Ioka M, Irtiza-Ali A, Isakova T, Isari W, Iselt M, Ishiguro A, Ishihara K, Ishikawa T, Ishimoto T, Ishizuka K, Ismail R, Itano S, Ito H, Ito K, Ito M, Ito Y, Iwagaitsu S, Iwaita Y, Iwakura T, Iwamoto M, Iwasa M, Iwasaki H, Iwasaki S, Izumi K, Izumi K, Izumi T, Jaafar SM, Jackson C, Jackson Y, Jafari G, Jahangiriesmaili M, Jain N, Jansson K, Jasim 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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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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 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Ryder M, Sabarai A, Saccà C, Sachson R, Sadler E, Safiee NS, Sahani M, Saillant A, Saini J, Saito C, Saito S, Sakaguchi K, Sakai M, Salim H, Salviani C, Sammons E, Sampson A, Samson F, Sandercock P, Sanguila S, Santorelli G, Santoro D, Sarabu N, Saram T, Sardell R, Sasajima H, Sasaki T, Satko S, Sato A, Sato D, Sato H, Sato H, Sato J, Sato T, Sato Y, Satoh M, Sawada K, Schanz M, Scheidemantel F, Schemmelmann M, Schettler E, Schettler V, Schlieper GR, Schmidt C, Schmidt G, Schmidt U, Schmidt-Gurtler H, Schmude M, Schneider A, Schneider I, Schneider-Danwitz C, Schomig M, Schramm T, Schreiber A, Schricker S, Schroppel B, Schulte-Kemna L, Schulz E, Schumacher B, Schuster A, Schwab A, Scolari F, Scott A, Seeger W, Seeger W, Segal M, Seifert L, Seifert M, Sekiya M, Sellars R, Seman MR, Shah S, Shah S, Shainberg L, Shanmuganathan M, Shao F, Sharma K, Sharpe C, Sheikh-Ali M, Sheldon J, Shenton C, Shepherd A, Shepperd M, Sheridan R, Sheriff Z, Shibata Y, Shigehara T, Shikata K, Shimamura K, 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T, Tamori Y, Tamura R, Tamura Y, Tan CHH, Tan EZZ, Tanabe A, Tanabe K, Tanaka A, Tanaka A, Tanaka N, Tang S, Tang Z, Tanigaki K, Tarlac M, Tatsuzawa A, Tay JF, Tay LL, Taylor J, Taylor K, Taylor K, Te A, Tenbusch L, Teng KS, Terakawa A, Terry J, Tham ZD, Tholl S, Thomas G, Thong KM, Tietjen D, Timadjer A, Tindall H, Tipper S, Tobin K, Toda N, Tokuyama A, Tolibas M, Tomita A, Tomita T, Tomlinson J, Tonks L, Topf J, Topping S, Torp A, Torres A, Totaro F, Toth P, Toyonaga Y, Tripodi F, Trivedi K, Tropman E, Tschope D, Tse J, Tsuji K, Tsunekawa S, Tsunoda R, Tucky B, Tufail S, Tuffaha A, Turan E, Turner H, Turner J, Turner M, Tuttle KR, Tye YL, Tyler A, Tyler J, Uchi H, Uchida H, Uchida T, Uchida T, Udagawa T, Ueda S, Ueda Y, Ueki K, Ugni S, Ugwu E, Umeno R, Unekawa C, Uozumi K, Urquia K, Valleteau A, Valletta C, van Erp R, Vanhoy C, Varad V, Varma R, Varughese A, Vasquez P, Vasseur A, Veelken R, Velagapudi C, Verdel K, Vettoretti S, Vezzoli G, Vielhauer V, Viera R, Vilar E, Villaruel S, Vinall L, Vinathan J, Visnjic M, Voigt E, von-Eynatten M, Vourvou M, Wada J, Wada J, Wada T, Wada Y, Wakayama K, Wakita Y, Wallendszus K, Walters T, Wan Mohamad WH, Wang L, Wang W, Wang X, Wang X, Wang Y, Wanner C, Wanninayake S, Watada H, Watanabe K, Watanabe K, Watanabe M, Waterfall H, Watkins D, Watson S, Weaving L, Weber B, Webley Y, Webster A, Webster M, Weetman M, Wei W, Weihprecht H, Weiland L, Weinmann-Menke J, Weinreich T, Wendt R, Weng Y, Whalen M, Whalley G, Wheatley R, Wheeler A, Wheeler J, Whelton P, White K, Whitmore B, Whittaker S, Wiebel J, Wiley J, Wilkinson L, Willett M, Williams A, Williams E, Williams K, Williams T, Wilson A, Wilson P, Wincott L, Wines E, Winkelmann B, Winkler M, Winter-Goodwin B, Witczak J, Wittes J, Wittmann M, Wolf G, Wolf L, Wolfling R, Wong C, Wong E, Wong HS, Wong LW, Wong YH, Wonnacott A, Wood A, Wood L, Woodhouse H, Wooding N, Woodman A, Wren K, Wu J, Wu P, Xia S, Xiao H, Xiao X, Xie Y, Xu C, Xu Y, Xue H, Yahaya H, Yalamanchili H, Yamada A, Yamada N, Yamagata K, Yamaguchi M, Yamaji Y, Yamamoto A, Yamamoto S, Yamamoto S, Yamamoto T, Yamanaka A, Yamano T, Yamanouchi Y, Yamasaki N, Yamasaki Y, Yamasaki Y, Yamashita C, Yamauchi T, Yan Q, Yanagisawa E, Yang F, Yang L, Yano S, Yao S, Yao Y, Yarlagadda S, Yasuda Y, Yiu V, Yokoyama T, Yoshida S, Yoshidome E, Yoshikawa H, Young A, Young T, Yousif V, Yu H, Yu Y, Yuasa K, Yusof N, Zalunardo N, Zander B, Zani R, Zappulo F, Zayed M, Zemann B, Zettergren P, Zhang H, Zhang L, Zhang L, Zhang N, Zhang X, Zhao J, Zhao L, Zhao S, Zhao Z, Zhong H, Zhou N, Zhou S, Zhu D, Zhu L, Zhu S, Zietz M, Zippo M, Zirino F, Zulkipli FH. Impact of primary kidney disease on the effects of empagliflozin in patients with chronic kidney disease: secondary analyses of the EMPA-KIDNEY trial. Lancet Diabetes Endocrinol 2024; 12:51-60. [PMID: 38061372 DOI: 10.1016/s2213-8587(23)00322-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/24/2023] [Accepted: 10/25/2023] [Indexed: 12/23/2023]
Abstract
BACKGROUND The EMPA-KIDNEY trial showed that empagliflozin reduced the risk of the primary composite outcome of kidney disease progression or cardiovascular death in patients with chronic kidney disease mainly through slowing progression. We aimed to assess how effects of empagliflozin might differ by primary kidney disease across its broad population. METHODS EMPA-KIDNEY, a randomised, controlled, phase 3 trial, was conducted at 241 centres in eight countries (Canada, China, Germany, Italy, Japan, Malaysia, the UK, and the USA). Patients were eligible if their estimated glomerular filtration rate (eGFR) was 20 to less than 45 mL/min per 1·73 m2, or 45 to less than 90 mL/min per 1·73 m2 with a urinary albumin-to-creatinine ratio (uACR) of 200 mg/g or higher at screening. They were randomly assigned (1:1) to 10 mg oral empagliflozin once daily or matching placebo. Effects on kidney disease progression (defined as a sustained ≥40% eGFR decline from randomisation, end-stage kidney disease, a sustained eGFR below 10 mL/min per 1·73 m2, or death from kidney failure) were assessed using prespecified Cox models, and eGFR slope analyses used shared parameter models. Subgroup comparisons were performed by including relevant interaction terms in models. EMPA-KIDNEY is registered with ClinicalTrials.gov, NCT03594110. FINDINGS Between May 15, 2019, and April 16, 2021, 6609 participants were randomly assigned and followed up for a median of 2·0 years (IQR 1·5-2·4). Prespecified subgroupings by primary kidney disease included 2057 (31·1%) participants with diabetic kidney disease, 1669 (25·3%) with glomerular disease, 1445 (21·9%) with hypertensive or renovascular disease, and 1438 (21·8%) with other or unknown causes. Kidney disease progression occurred in 384 (11·6%) of 3304 patients in the empagliflozin group and 504 (15·2%) of 3305 patients in the placebo group (hazard ratio 0·71 [95% CI 0·62-0·81]), with no evidence that the relative effect size varied significantly by primary kidney disease (pheterogeneity=0·62). The between-group difference in chronic eGFR slopes (ie, from 2 months to final follow-up) was 1·37 mL/min per 1·73 m2 per year (95% CI 1·16-1·59), representing a 50% (42-58) reduction in the rate of chronic eGFR decline. This relative effect of empagliflozin on chronic eGFR slope was similar in analyses by different primary kidney diseases, including in explorations by type of glomerular disease and diabetes (p values for heterogeneity all >0·1). INTERPRETATION In a broad range of patients with chronic kidney disease at risk of progression, including a wide range of non-diabetic causes of chronic kidney disease, empagliflozin reduced risk of kidney disease progression. Relative effect sizes were broadly similar irrespective of the cause of primary kidney disease, suggesting that SGLT2 inhibitors should be part of a standard of care to minimise risk of kidney failure in chronic kidney disease. FUNDING Boehringer Ingelheim, Eli Lilly, and UK Medical Research Council.
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Ogawa T, Fujita K, Kawabata K, Hori H, Hayashi K, Suzuki A, Nakaya Y, Kobayashi Y. Is it safe to control the car pedal with the lower limb of the unaffected side in patients with stroke? Traffic Inj Prev 2023; 25:27-35. [PMID: 37773056 DOI: 10.1080/15389588.2023.2260914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 09/15/2023] [Indexed: 09/30/2023]
Abstract
OBJECTIVES Few studies have examined motor function in determining the suitability of patients with stroke to resume driving a car. Patients with hemiplegia usually control car pedals with the unaffected lower limb. However, motor control on the unaffected side is also impaired in patients with stroke. This study aimed to clarify the neurophysiological characteristics of pedal switching control during emergency braking in patients with hemiplegia. METHODS The study participants consisted of 10 drivers with left hemiplegia and 10 age-matched healthy drivers. An experimental pedal was used to measure muscle activity and kinematic data during braking, triggered by the light from a light-emitting diode placed in front of the drivers. RESULTS The patient group took the same reaction time as the healthy group. However, from the visual stimulus to the release of the accelerator pedal, the patient group had higher muscle activity in the tibialis anterior and rectus femoris and had faster angular velocities of hip and knee flexion than the healthy group. In addition, the patient group had higher co-contraction activities between flexors and extensors. From the accelerator pedal release to brake contact, the patient group had slower angular velocities of hip adduction, internal rotation, ankle dorsiflexion, internal return, and internal rotation than the healthy group. CONCLUSIONS Patients with hemiplegia exhibited poor control of pedal switching using their unaffected side throughout the pedal-switching task. These results indicate that the safety related to car-pedal control should be carefully evaluated while deciding whether a patient can resume driving a car after a stroke.
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Affiliation(s)
- Tomoki Ogawa
- Department of Health Science, Graduate School of Health Science, Fukui Health Science University, Fukui, Japan
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui, Japan
| | - Kazuki Fujita
- Graduate School of Health Science, Fukui Health Science University, Fukui, Japan
| | - Kaori Kawabata
- Graduate School of Health Science, Fukui Health Science University, Fukui, Japan
| | - Hideaki Hori
- Graduate School of Health Science, Fukui Health Science University, Fukui, Japan
| | - Koji Hayashi
- Department of Rehabilitation Medicine, Fukui General Hospital, Fukui, Japan
| | - Asuka Suzuki
- Department of Rehabilitation Medicine, Fukui General Hospital, Fukui, Japan
| | - Yuka Nakaya
- Department of Rehabilitation Medicine, Fukui General Hospital, Fukui, Japan
| | - Yasutaka Kobayashi
- Graduate School of Health Science, Fukui Health Science University, Fukui, Japan
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Abbasi RU, Allen MG, Arimura R, Belz JW, Bergman DR, Blake SA, Shin BK, Buckland IJ, Cheon BG, Fujii T, Fujisue K, Fujita K, Fukushima M, Furlich GD, Gerber ZR, Globus N, Hibino K, Higuchi R, Honda K, Ikeda D, Ito H, Iwasaki A, Jeong S, Jeong HM, Jui CH, Kadota K, Kakimoto F, Kalashev OE, Kasahara K, Kawata K, Kharuk I, Kido E, Kim SW, Kim HB, Kim JH, Kim JH, Komae I, Kubota Y, Kuznetsov MY, Lee KH, Lubsandorzhiev BK, Lundquist JP, Matthews JN, Nagataki S, Nakamura T, Nakazawa A, Nonaka T, Ogio S, Ono M, Oshima H, Park IH, Potts M, Pshirkov S, Remington JR, Rodriguez DC, Rott C, Rubtsov GI, Ryu D, Sagawa H, Sakaki N, Sako T, Sakurai N, Shin H, Smith JD, Sokolsky P, Stokes BT, Stroman TS, Takahashi K, Takeda M, Taketa A, Tameda Y, Thomas S, Thomson GB, Tinyakov PG, Tkachev I, Tomida T, Troitsky SV, Tsunesada Y, Udo S, Urban FR, Wong T, Yamazaki K, Yuma Y, Zhezher YV, Zundel Z. An extremely energetic cosmic ray observed by a surface detector array. Science 2023; 382:903-907. [PMID: 37995237 DOI: 10.1126/science.abo5095] [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: 02/08/2022] [Accepted: 10/19/2023] [Indexed: 11/25/2023]
Abstract
Cosmic rays are energetic charged particles from extraterrestrial sources, with the highest-energy events thought to come from extragalactic sources. Their arrival is infrequent, so detection requires instruments with large collecting areas. In this work, we report the detection of an extremely energetic particle recorded by the surface detector array of the Telescope Array experiment. We calculate the particle's energy as [Formula: see text] (~40 joules). Its arrival direction points back to a void in the large-scale structure of the Universe. Possible explanations include a large deflection by the foreground magnetic field, an unidentified source in the local extragalactic neighborhood, or an incomplete knowledge of particle physics.
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Affiliation(s)
- R U Abbasi
- Physics Department, Loyola University Chicago, Chicago, IL, USA
| | - M G Allen
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - R Arimura
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - J W Belz
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - D R Bergman
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - S A Blake
- Stellar Science, Albuquerque, NM, USA
| | - B K Shin
- Department of Physics, Ulsan National Institute of Science and Technology, 44919, Ulsan, Korea
| | - I J Buckland
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - B G Cheon
- Department of Physics and The Research Institute of Natural Science, Hanyang University, Seongdong-gu, Seoul, Korea
| | - T Fujii
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
- Hakubi Center for Advanced Research and Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
- Nambu Yoichiro Institute of Theoretical and Experimental Physics, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - K Fujisue
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - K Fujita
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - M Fukushima
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - G D Furlich
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - Z R Gerber
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - N Globus
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - K Hibino
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - R Higuchi
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - K Honda
- University of Yamanashi, Kofu, 400-8510, Japan
| | - D Ikeda
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - H Ito
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - A Iwasaki
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - S Jeong
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - H M Jeong
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - C H Jui
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - K Kadota
- Department of Natural Sciences, Tokyo City University, Setagaya-ku, Tokyo 158-8557, Japan
| | - F Kakimoto
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - O E Kalashev
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - K Kasahara
- Shibauta Institute of Technology and Sicence, Fukasaku 307, Minuma-ku, Saitama, Japan
| | - K Kawata
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - I Kharuk
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - E Kido
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - S W Kim
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - H B Kim
- Department of Physics and The Research Institute of Natural Science, Hanyang University, Seongdong-gu, Seoul, Korea
| | - J H Kim
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - J H Kim
- Physics Division, Argonne National Laboratory, Lemont, IL, USA
| | - I Komae
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - Y Kubota
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - M Y Kuznetsov
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - K H Lee
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - B K Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - J P Lundquist
- Center for Astrophysics and Cosmology, University of Nova Gorica, Nova Gorica, Slovenia
| | - J N Matthews
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - S Nagataki
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - T Nakamura
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - A Nakazawa
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - T Nonaka
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - S Ogio
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - M Ono
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan
| | - H Oshima
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - I H Park
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - M Potts
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - S Pshirkov
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - J R Remington
- NASA Marshall Space Flight Center, Martin Road, Huntsville, AL, USA
| | - D C Rodriguez
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
- Integrated Support Center for Nuclear Nonproliferation and Nuclear Security, Japan Atomic Energy Agency, Tokai-mura, Ibaraki 319-1195, Japan
| | - C Rott
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - G I Rubtsov
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - D Ryu
- Department of Physics, Ulsan National Institute of Science and Technology, 44919, Ulsan, Korea
| | - H Sagawa
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - N Sakaki
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - T Sako
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - N Sakurai
- Faculty of Design Technology, 3-1-1 Nakagaito, Daito City, Osaka, Japan
| | - H Shin
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - J D Smith
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - P Sokolsky
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - B T Stokes
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - T S Stroman
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - K Takahashi
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - M Takeda
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - A Taketa
- Earthquake Research Institute, University of Tokyo, Bunkyo-ku, Tokyo, 113-0032, Japan
| | - Y Tameda
- Department of Engineering Science, Faculty of Engineering, Osaka Electro-Communication University, Neyagawa-shi, Osaka 572-8530, Japan
| | - S Thomas
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - G B Thomson
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - P G Tinyakov
- Universite Libre de Bruxelles, bvd du Triomphe CP225, Brussels, Belgium
| | - I Tkachev
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - T Tomida
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - S V Troitsky
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - Y Tsunesada
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
- Nambu Yoichiro Institute of Theoretical and Experimental Physics, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - S Udo
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - F R Urban
- The Central European Institute for Cosmology and Fundamental Physics, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic
| | - T Wong
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - K Yamazaki
- College of Engineering, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan
| | - Y Yuma
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - Y V Zhezher
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - Z Zundel
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
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Fujita K, Zhu Q, Arakawa H, Shirasaka Y, Tamai I. Potentiation of the Uricosuric Effect of Dotinurad by Trans-Inhibition of the Uric Acid Reabsorptive Transporter 1. Drug Metab Dispos 2023; 51:1527-1535. [PMID: 37643882 DOI: 10.1124/dmd.123.001412] [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: 06/08/2023] [Revised: 08/11/2023] [Accepted: 08/18/2023] [Indexed: 08/31/2023] Open
Abstract
Urate transporter 1 (URAT1) is a transporter responsible for uric acid (UA) reabsorption by renal proximal tubules and a pharmacological target of uricosuric agents. Probenecid and benzbromarone have been used as uricosuric agents, while dotinurad was recently approved in Japan. Notably, the in vitro IC 50 of dotinurad on URAT1 is not strong enough to explain its in vivo uricosuric effect estimated based on clinical unbound plasma concentrations, suggesting the presence of mechanisms other than competition with UA uptake at the extracellular domain of URAT1 (cis-inhibition). In this study, trans-inhibition was hypothesized as the mechanism underlying URAT1 inhibition by dotinurad, wherein intracellularly accumulated dotinurad inactivates URAT1. In URAT1-expressing Madin-Darby Canine Kidney-II cells and Xenopus oocytes, pre-incubation with dotinurad potentiated the inhibitory effect more than co-incubation alone, but this effect was not observed with benzbromarone or probenecid. Under co-incubation, dotinurad inhibited UA uptake in a competitive manner (cis-inhibition). When we pre-injected dotinurad directly into oocytes and immediately measured [14C]UA uptake without coincubation (only trans-inhibition), dotinurad noncompetitively inhibited UA uptake. URAT1 is an exchange transporter for UA and monocarboxylates such as nicotinic acid (NA). Pre-injected dotinurad and extracellular UA attenuated and facilitated efflux of [3H]NA, respectively, whereas pre-injection of benzbromarone or probenecid did not affect it, suggesting that dotinurad exhibits trans-inhibition by attenuating URAT1-mediated efflux of monocarboxylates, which is a driving force for UA uptake by URAT1. Accordingly, dotinurad ameliorates URAT1-mediated UA reabsorption by both cis- and trans-inhibition, explaining its clinically stronger uricosuric effect than that estimated by the in vitro IC50 value. SIGNIFICANCE STATEMENT: The uricosuric agent dotinurad inhibits uric acid reabsorptive transporter (URAT) 1 with a clinical potency stronger than that estimated from IC 50 obtained by in vitro URAT1 inhibition. This in vivo-in vitro discrepancy was explained by the trans-inhibition effect of dotinurad on URAT1. Trans-inhibition was due to the attenuation of monocarboxylates efflux via URAT1, which is a driving force for URAT1-mediated exchange transport of uric acid. Overall, this is the first study to experimentally demonstrate trans-inhibition mechanism of URAT1.
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Affiliation(s)
- Kazuki Fujita
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Qiunan Zhu
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroshi Arakawa
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Yoshiyuki Shirasaka
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
| | - Ikumi Tamai
- Faculty of Pharmaceutical Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa, Japan
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Shimaguchi C, Mizuguchi K, Fujita K, Shimoda T, Ikeda H. Cytological examination of peripheral blood cell block to diagnose small cell variant ALK-positive anaplastic large cell lymphoma. Cytopathology 2023; 34:626-629. [PMID: 37522608 DOI: 10.1111/cyt.13281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 06/11/2023] [Accepted: 07/14/2023] [Indexed: 08/01/2023]
Abstract
In small cell variant ALK-positive anaplastic large cell lymphoma (SC-ALCL), large hallmark cells are few and the preponderance are small- to medium-sized tumour cells. The cell block method is advantageous in SC-ALCL with small numbers of CD30-positive hallmark cells, in order to evaluate cell morphology and marker expression simultaneously. Accurate diagnosis of ALK-positive anaplastic large cell lymphoma (ALK+ ALCL) requires detection of CD30-positive hallmark cells. In small cell variant ALCL (SC-ALCL), large hallmark cells are few with the preponderance being small- to medium-sized tumour cells. The cell block method is advantageous in SC-ALCL with small numbers of CD30-positive hallmark cells in order to evaluate cell morphology and marker expression simultaneously.
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Affiliation(s)
- Chie Shimaguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kazuki Fujita
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tsubasa Shimoda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroko Ikeda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
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Fujita K, Mizuguchi K, Mori T, Shimoda T, Sakano K, Shimaguchi C, Ito A, Yoshimura K, Sakaguchi M, Imi T, Ikeda H. SMARCB1/INI1-deficient intrathoracic neoplasm with rhabdoid/plasmacytoid cytomorphology in a patient with plasma cell myeloma: A case report. Diagn Cytopathol 2023; 51:E294-E300. [PMID: 37475580 DOI: 10.1002/dc.25197] [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: 04/17/2023] [Revised: 07/03/2023] [Accepted: 07/12/2023] [Indexed: 07/22/2023]
Abstract
SMARCB1 (INI1) is one of the switch/sucrose nonfermentable (SWI/SNF) complexes whose loss is associated with several tumors. SMARCB1 (INI1)-deficient intrathoracic neoplasms are extremely rare and known to be highly malignant and lethal. This report presents the case of a patient diagnosed with SMARCB1 (INI1)-deficient intrathoracic neoplasm during chemotherapy for plasma cell myeloma. A 77-year-old male patient complained of cough, bloody sputum, and fever with an enlarged right lung mass and pleural effusion. His cytological examination revealed undifferentiated epithelioid and rhabdoid/plasmacytoid cells with bi- or multinucleation, vacuolization, mitosis, and pleomorphism. However, it was difficult to distinguish the relapse of plasma cell myeloma as atypical plasmacytoid cells were detected. Immunohistochemically, the neoplastic cells showed a loss of SMARCB1 (INI1) expression in the cell block of pleural fluid and in the right lung of the autopsy specimen. Further, the patient was diagnosed with SMARCB1 (INI1)-deficient intrathoracic neoplasm of the right lung based on histological and autopsy findings. To the best of our knowledge, this is the first report of cytomorphology in a SMARCB1 (INI1)-deficient intrathoracic neoplasm.
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Affiliation(s)
- Kazuki Fujita
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Keishi Mizuguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tatsuya Mori
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tsubasa Shimoda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kaori Sakano
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Chie Shimaguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Ayumi Ito
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Kaori Yoshimura
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Maki Sakaguchi
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
| | - Tatsuya Imi
- Department of Hematology, Kanazawa University Hospital, Kanazawa, Japan
| | - Hiroko Ikeda
- Department of Diagnostic Pathology, Kanazawa University Hospital, Kanazawa, Japan
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Fujita K, Hattori M, Takehara T, Suzuki T, Nakamura S. Enantioselective Construction of Consecutive Tetrasubstituted Stereogenic Centers by Reaction of α-Substituted β-Nitroacrylates with Oxazol-5-(4 H)-ones Catalyzed by Cinchona Alkaloid Sulfonamide Catalysts. Org Lett 2023; 25:2835-2839. [PMID: 37067189 DOI: 10.1021/acs.orglett.3c00783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2023]
Abstract
The enantioselective reaction of α-substituted β-nitroacrylates with oxazol-5-(4H)-ones (oxazolones) to construct consecutive tetrasubstituted stereogenic centers was accomplished. A cinchona alkaloid sulfonamide catalyst afforded products bearing vicinal chiral centers with excellent enantio- and diastereoselectivities. The obtained products were successively converted into various chiral compounds without loss of their enantiopurity. Furthermore, density functional theory (DFT) calculations were performed to elucidate the mechanism and origin of the observed stereoselectivity of the reaction.
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Affiliation(s)
- Kazuki Fujita
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Momona Hattori
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Tsunayoshi Takehara
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Takeyuki Suzuki
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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Yamano S, Tsukuda Y, Mizuhara N, Yamaguchi Y, Ogita A, Fujita K. Dehydrozingerone enhances the fungicidal activity of glabridin against Saccharomyces cerevisiae and Candida albicans. Lett Appl Microbiol 2023; 76:7093404. [PMID: 36990694 DOI: 10.1093/lambio/ovad040] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 03/16/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023]
Abstract
Drug resistance commonly occurs when treating immunocompromised patients with fungal infections. Dehydrozingerone-a phenolic compound isolated from the rhizome of Zingiber officinale-inhibits drug efflux in Saccharomyces cerevisiae by overexpression of the ATP-binding cassette (ABC) transporter Pdr5p. We aimed to investigate whether dehydrozingerone enhances the antifungal activity of glabridin-an isoflavan isolated from the roots of Glycyrrhiza glabra L.-by attenuating multidrug resistance through the intrinsic expression system of multidrug-efflux-related genes in a wild-type strain of the model yeast. The antifungal activity of 50 µmol l-1 glabridin alone was weak and temporary against S. cerevisiae; however, cell viability was significantly inhibited when the cells were co-treated with glabridin and dehydrozingerone. This enhancement was also observed in human pathogenic Candida albicans. Glabridin efflux did not depend on a particular drug efflux pump; instead, the transcription factors PDR1 and PDR3-regulating the transcription of multiple genes encoding drug efflux pumps-were involved in the antifungal activity and efflux of glabridin. qRT-PCR analysis revealed that dehydrozingerone reduced glabridin-induced overexpression of the ABC transporter-related genes PDR1, PDR3, and PDR5 to the levels observed in untreated cells. Our findings indicated that dehydrozingerone potentiates the efficacy of plant-derived antifungals through its effects on ABC transporters.
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Affiliation(s)
- S Yamano
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
| | - Y Tsukuda
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
| | - N Mizuhara
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
| | - Y Yamaguchi
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
| | - A Ogita
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
- Research Center for Urban Health and Sports, Osaka Metropolitan University, Osaka, Japan
| | - K Fujita
- Graduate School of Science, Osaka Metropolitan University, Osaka, Japan
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15
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Grossmann N, Soria F, Juvet T, Potretzka A, Djaladat H, Kikuchi E, Mari A, Khene Z, Fujita K, Raman J, Breda A, Sfakianos J, Pfail J, Laukhtina E, Rajwa P, Pallauf M, Cacciamani G, Poyet C, Van Doeveren T, Boormans J, Antonelli A, Jamil M, Ploussard G, Shariat S, Pradere B. Comparing oncological and perioperative outcomes of open versus laparoscopic versus robotic radical nephroureterectomy for the treatment of upper tract urothelial carcinoma: A multicenter, multinational, propensity score-matched analysis. Eur Urol 2023. [DOI: 10.1016/s0302-2838(23)00562-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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16
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Fukushima S, Fujita K, Hagiya H, Otsuka F. Right-sided infective endocarditis with odontogenic infections. QJM 2022; 115:753. [PMID: 35822613 DOI: 10.1093/qjmed/hcac172] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Indexed: 11/15/2022] Open
Affiliation(s)
- S Fukushima
- Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
- Department of General Medicine and Infectious Diseases, Tsuyama Chuo Hospital, 1756 Kawasaki, Tsuyama City, Okayama Prefecture 708-0841, Japan
| | - K Fujita
- Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
- Department of General Medicine and Infectious Diseases, Tsuyama Chuo Hospital, 1756 Kawasaki, Tsuyama City, Okayama Prefecture 708-0841, Japan
| | - H Hagiya
- Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
| | - F Otsuka
- Department of General Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kitaku, Okayama 700-8558, Japan
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17
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Fujita K, Tsushima Y, Hayashi K, Kawabata K, Sato M, Kobayashi Y. Differences in causes of stiff knee gait in knee extensor activity or ankle kinematics: A cross-sectional study. Gait Posture 2022; 98:187-194. [PMID: 36166956 DOI: 10.1016/j.gaitpost.2022.09.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/20/2022] [Accepted: 09/19/2022] [Indexed: 02/02/2023]
Abstract
BACKGROUND Stiff knee gait (SKG), a common occurrence after the onset of stroke, is caused by hyperactivity of the rectus femoris during the swing phase. Another cause of SKG is the weakness of push-off in hemiparetic gait. Prior research did not consider the effect of the magnitude of knee extensors in their subjects. RESEARCH QUESTION Does the cause of SKG differ between patients with high and low knee extensor activities during the swing phase? METHODS We examined 38 patients with chronic stroke hemiplegia who presented with SKG. After placing an inertia sensor and an electromyogram, patients walked 10 m at a comfortable speed. All patients were categorized per the sign of the principal component 2 (PC2) as a component with large factor loadings of knee extensors attained from the electromyographic amplitude during the early swing phase of the paretic limb. Then, the kinematic parameters of knee flexion and other gait parameters in each group were compared, and a correlation analysis was performed. RESULTS In the high PC2 group, the timing of peak knee flexion during the swing phase was early, and vastus lateralis activity during the preswing phase negatively correlated with the knee-flexion angle during the swing phase. In the low PC2 group, the angular velocity of ankle plantar flexion at the toe-off was slow, which positively correlated with the knee-flexion angle during the swing phase. SIGNIFICANCE The cause of SKG could be an inappropriate activity of the vastus lateralis rather than the rectus femoris in patients with high knee extensor activity and slow plantar-flexion velocity at toe-off in patients with low knee extensor activity. Not all causes of SKG in patients with hemiplegia are common, and different treatment strategies are needed per the individuality of spastic knee extensor activity.
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Affiliation(s)
- Kazuki Fujita
- Graduate School of Health Science, Fukui Health Science University, Fukui-city, Fukui, Japan.
| | - Yuichi Tsushima
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan
| | - Koji Hayashi
- Department of Rehabilitation Medicine, Fukui General Hospital, Fukui-city, Fukui, Japan
| | - Kaori Kawabata
- Graduate School of Health Science, Fukui Health Science University, Fukui-city, Fukui, Japan
| | - Mamiko Sato
- Department of Rehabilitation Medicine, Fukui General Hospital, Fukui-city, Fukui, Japan
| | - Yasutaka Kobayashi
- Graduate School of Health Science, Fukui Health Science University, Fukui-city, Fukui, Japan
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18
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Fujita K, Katsuki M, Takasu A, Kitajima A, Shimazu T, Maruki Y. Development of an artificial
intelligence‐based
diagnostic model for Alzheimer's disease. Aging Med (Milton) 2022; 5:167-173. [PMID: 36247338 PMCID: PMC9549305 DOI: 10.1002/agm2.12224] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 09/01/2022] [Accepted: 09/04/2022] [Indexed: 11/09/2022] Open
Affiliation(s)
- Kazuki Fujita
- Department of Neurology Saitama Neuropsychiatric Institute Saitama City Saitama Japan
- Chichibu City Otaki National Health Insurance Clinic Chichibu Saitama Japan
| | - Masahito Katsuki
- Department of Neurosurgery Itoigawa General Hospital Itoigawa Niigata Japan
| | - Ai Takasu
- Department of Clinical Psychology Saitama Neuropsychiatric Institute Saitama City Saitama Japan
| | - Ayako Kitajima
- Department of Clinical Psychology Saitama Neuropsychiatric Institute Saitama City Saitama Japan
| | - Tomokazu Shimazu
- Department of Neurology Saitama Neuropsychiatric Institute Saitama City Saitama Japan
| | - Yuichi Maruki
- Department of Neurology Saitama Neuropsychiatric Institute Saitama City Saitama Japan
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19
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Tsushima Y, Fujita K, Miaki H, Kobayashi Y. Effects of increasing non-paretic step length on paretic leg movement during hemiparetic gait: a pilot study. J Phys Ther Sci 2022; 34:590-595. [PMID: 35937629 PMCID: PMC9345751 DOI: 10.1589/jpts.34.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 05/18/2022] [Indexed: 11/24/2022] Open
Abstract
[Purpose] Gait training that increases non-paretic step length in stroke patients
increases the propulsive force of the paretic leg. However, it limits knee flexion during
the swing phase of gait, and this may cause gait disturbances such as worsening of gait
pattern and increased risk of falling. Therefore, this study aimed to investigate the
effects of increasing non-paretic step length on the joint movement and muscle activity of
a paretic lower limb during hemiparetic gait. [Participants and Methods] A total of 15
hemiparetic patients with chronic stroke were enrolled in this study. Spatiotemporal
parameters, along with kinematic and electromyography data of their paretic lower limbs,
were measured during a 10-m distance overground walking. Two walking conditions were
assessed: normal (comfortable gait) and non-paretic-long (gait with increased non-paretic
step length) conditions. [Results] Under the non-paretic-long condition, the trailing limb
angle was larger than under the normal condition. However, no significant difference was
observed in the knee flexion angle during the swing phase. [Conclusion] Increasing
non-paretic step length during gait is unlikely to limit knee flexion during the swing
phase and can safely improve the propulsive force of a paretic leg.
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Affiliation(s)
- Yuichi Tsushima
- Department of Physical Therapy Rehabilitation, Fukui General Hospital: 58-16-1 Egami, Fukui-city, Fukui 910-8651, Japan.,Division of Health Sciences, Graduate School of Medical Sciences, Kanazawa University, Japan
| | - Kazuki Fujita
- Graduate School of Health Science, Fukui Health Science University, Japan
| | - Hiroichi Miaki
- Graduate School of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Japan
| | - Yasutaka Kobayashi
- Graduate School of Health Science, Fukui Health Science University, Japan
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20
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Kanayama Y, Nagata A, Shimotake M, Miyachi F, Fujita K, Koyama M, Uno S. AB0363 COMPARING THE ULTRASONOGRAPHIC EVALUATION IN PATIENTS WITH JAPANESE RHEUMATOID ARTHRITIS BETWEEN JAK AND TNF INHIBITOR THERAPY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.3425] [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] [Indexed: 11/04/2022]
Abstract
BackgroundJAK inhibitor (JAK) and TNF inhibitor (TNF) are the important therapeutic agent for the treatment of rheumatoid arthritis.However there is still few studies of improvement of ultrasonographic findings in RA treated comparison with JAK and TNF.ObjectivesTo evaluate the clinical efficacy of JAK and TNF therapy patients with rheumatoid arthritis (RA) using ultrasonography (US).MethodsParticipants comprised 32 and 39 Japanese RA patients who had recently received JAK (BAR23, PEF9) and TNF. All patients with a diagnosis of RA according to the 2010 ACR/EULAR criteria. Patients underwent clinical and laboratory assessments every 4 weeks from baseline to 24 weeks, and US assessments at baseline, 4, 12 and 24 weeks. Gray scale (GS) and power doppler (PD) signals were scored using a semi-quantitative scale from 0 to 3 at 26 (0-78) synovial sites (22 joints) in the following joints: bilateral first to fifth metacarpopharangeal (MCP) joints (dorsal recess); first interphalangeal (IP) and second to fifth proximal interphalangeal (PIP) (dorsal recess) joints; and the wrists (dorsal radial, median and ulnar). We evaluated the improvement of GS and PD score from baseline to week 24.ResultsIn the patients receiving JAK (n=32) and TNF (n=39), the mean age was 54.7 vs 55.1 years old (p=0.871), disease duration was 7.4 vs 6.1 years (p=0.290), the rate of MTX use was 75% vs 87% (p=0.187), the mean MTX dose was 9.9 vs 10.2 mg/w (p=0.813), the rate of ACPA positive was 94% vs 79% (p=0.086), DAS28-ESR was 4.79 vs 4.65 (p=0.435), CDAI was 22.4 vs 19.1 (p=0.239), GS score was 20.8 vs 18.3 (p=0.995) and PD score was 14.0 vs 11.0 (p=0.940). The degree of improvement respective changes in GS and PD score after 4, 12 and 24 weeks were as follows: GS: -5.1 vs -4.3 (p=0.817) and PD: -5.3 vs -2.7 (p=0.855) after 4 weeks, GS: -9.1 vs -6.6 (p=0.880) and PD: -7.9 vs -4.5 (p=0.476) after 12 weeks, GS: -10.4 vs -9.5 (p=0.463) and PD: -8.1 vs -6.7 (p=0.968) after 24 weeks between JAK and TNF (Figures 1 and 2). Next, The improvement rate of respective changes in GS and PD score after 4, 12 and 24 weeks were as follows: GS: -13.7% vs -18.3% (p=0.489) and PD: -20.4% vs -16.5% (p=0.777) after 4 weeks, GS: -29.7% vs -26.0% (p=0.922) and PD: -30.9% vs -30.8% (p=0.890) after 12 weeks, GS: -38.1% vs -36.4% (p=0.567) and PD: -33.4% vs -50.1% (p=0.977) after 24 weeks between JAK and TNF.ConclusionThe present study provides evidence supporting the JAK and TNF therapy improved similarly the inflammatory synovitis of US findings.Disclosure of InterestsNone declared
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Niida T, Wakiyama Y, Takata H, Taniguchi K, Kurosawa H, Fujita K, Konoplev A. A comparative study of riverine 137Cs dynamics during high-flow events at three contaminated river catchments in Fukushima. Sci Total Environ 2022; 821:153408. [PMID: 35090916 DOI: 10.1016/j.scitotenv.2022.153408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 01/18/2022] [Accepted: 01/21/2022] [Indexed: 06/14/2023]
Abstract
This study presents the temporal variations in riverine 137Cs concentrations and fluxes to the ocean during high-flow events in three coastal river catchments contaminated by the Fukushima Daiichi Nuclear Power Plant accident. River water samples were collected at points downstream in the Niida, Ukedo, and Takase Rivers during three high-flow events that occurred in 2019-2020. Variations in both the dissolved and particulate 137Cs concentrations appeared to reflect the spatial pattern of the 137Cs inventory in the catchments, rather than variations in physico-chemical properties of water and suspended solid. Negative relationships between the 137Cs concentration and δ15N in suspended solid were found in all rivers during the intense rainfall events, suggesting an increased contribution of sediment from forested areas to the elevation of particulate 137Cs concentration. The 137Cs flux ranged from 0.33 to 19 GBq, depending on the rainfall erosivity. The particulate 137Cs fluxes from the Ukedo River were relatively low compared with the other two rivers and were attributed to the effect of the Ogaki Dam reservoir upstream. The percentage of 137Cs desorbed in seawater relative to 137Cs in suspended solids ranged from 2.8% to 6.6% and tended to be higher with a higher fraction of exchangeable 137Cs. The estimated potential release of 137Cs desorbed from suspended solids to the ocean was 0.022-0.57 GBq, and its ratio to the direct flux of dissolved 137Cs was 0.12-6.2. Episodic sampling during high-flow events demonstrated that the particulate 137Cs flux depends on catchment characteristics and controls 137Cs transfer to the ocean.
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Affiliation(s)
| | | | - Hyoe Takata
- Institute of Environmental Radioactivity, Fukushima University, Japan
| | | | - Honoka Kurosawa
- Graduate School of Symbiotic Systems Science and Technology, Fukushima University, Japan
| | - Kazuki Fujita
- Fukushima Prefectural Centre for Environmental Creation, Japan
| | - Alexei Konoplev
- Institute of Environmental Radioactivity, Fukushima University, Japan
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22
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Okada K, Fujita K, Fukuhara S, Imanaka T, Kuribayashi S, Sekii Y, Takezawa K, Kiuchi H, Nonomura N. Improvement of erectile dysfunction in germ cell tumor survivors. J Sex Med 2022. [DOI: 10.1016/j.jsxm.2022.03.451] [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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23
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Fujita K, Matsushita M, Motooka D, Hatano K, Nishimoto M, Banno E, Hata J, Tsujimura A, Nakamura S, Minami T, Nozawa M, Yoshimura K, Obara W, Uemura H, Nonomura N. Firmicutes in gut microbiota correlate with blood testosterone levels in elderly men. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00479-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Katayama S, Pradere B, Grossmann N, Potretzke A, Boorjian S, Daneshmand S, Djaladat H, Sfakianos J, Mari A, Khene Z, D’Andrea D, Kikuchi E, Fujita K, Heindenreich A, Raman J, Roumiguié M, Abdollah F, Marcus J, Breda A, Fontana M, Rouprêt M, Araki M, Nasu Y, Shariat S. Clinical significance of tumor location for ureteroscopic tumor grading in upper tract urothelial carcinoma. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00383-9] [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: 11/04/2022]
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25
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Takezawa K, Fujita K, Matsushita M, Motooka D, Hatano K, Banno E, Shimizu N, Takao T, Takada S, Okada K, Fukuhara S, Kiuchi H, Uemura H, Nakamura S, Kojima Y, Nonomura N. The association between human gut microbiota and prostate enlargement. Eur Urol 2022. [DOI: 10.1016/s0302-2838(22)00673-x] [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: 11/04/2022]
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26
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Nagae M, Umegaki H, Yoshiko A, Fujita K, Komiya H, Watanabe K, Yamada Y, Sakai T. Muscle Evaluation and Hospital-Associated Disability in Acute Hospitalized Older Adults. J Nutr Health Aging 2022; 26:681-687. [PMID: 35842758 PMCID: PMC9194346 DOI: 10.1007/s12603-022-1814-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Accepted: 05/27/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES We aimed to examine the association of muscle evaluation, including muscle ultrasound, with hospital-associated disability (HAD), focusing on ADL categories. DESIGN A prospective observational cohort study. SETTING AND PARTICIPANTS We recruited patients aged 65 years or older who were admitted to the geriatric ward of an acute hospital between October 2019 and September 2021. MEASUREMENTS Handgrip strength, bioimpedance analyzer-determined skeletal muscle mass, bilateral thigh muscle thickness (BATT), and the echo intensity of the rectus femoris on muscle ultrasound were performed as muscle assessments. HAD was evaluated separately for mobility impairments and self-care impairments. RESULTS In total, 256 individuals (mean age, 85.2 years; male sex, 41.8%) were analyzed. HAD in mobility was more common than HAD in self-care (37.5% vs. 30.0%). Only BATT was independently associated with HAD in mobility in multiple logistic regression analysis. There was no significant association between muscle indicators and HAD in self-care. CONCLUSION A lower BATT was associated with a higher prevalence of HAD in mobility, suggesting the need to reconsider muscle assessment methods in hospitalized older adults. In addition, approaches other than physical may be required, such as psychosocial and environmental interventions to improve HAD in self-care.
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Affiliation(s)
- M Nagae
- Hiroyuki Umegaki. Department of Community Healthcare and Geriatrics, Nagoya University Graduate School of Medicine, 65 Tsuruma-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan. E-mail:
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27
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Tsukuda Y, Mizuhara N, Usuki Y, Yamaguchi Y, Ogita A, Tanaka T, Fujita K. Structure-activity relationships of antifungal phenylpropanoid derivatives and their synergy with n-dodecanol and fluconazole. Lett Appl Microbiol 2021; 74:377-384. [PMID: 34825394 DOI: 10.1111/lam.13613] [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: 10/25/2021] [Revised: 11/22/2021] [Accepted: 11/23/2021] [Indexed: 11/30/2022]
Abstract
trans-Anethole (anethole) is a phenylpropanoid; with other drugs, it exhibits synergistic activity against several fungi and is expected to be used in new therapies that cause fewer patient side effects. However, the detailed substructure(s) of the molecule responsible for this synergy has not been fully elucidated. We investigated the structure-activity relationships of phenylpropanoids and related derivatives, with particular attention on the methoxy group and the double bond of the propenyl group in anethole, as well as the length of the p-alkyl chain in p-alkylanisoles. Antifungal potency was largely related to p-alkyl chain length and the methoxy group of anethole, but not to the double bond of its propenyl group. Production of reactive oxygen species also played a role in these fungicidal activities. Inhibition of drug efflux was associated with the length of the p-alkyl chain and the double bond of the propenyl group in anethole, but not with the methoxy group. Although a desirable synergy was observed between n-dodecanol and anethole or p-alkylanisoles with a length of C2-C6 in alkyl chains, it cannot be explained away as being solely due to the inhibition of drug efflux. Similar results were obtained when phenylpropanoid derivatives were combined with fluconazole against Candida albicans.
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Affiliation(s)
- Y Tsukuda
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - N Mizuhara
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - Y Usuki
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - Y Yamaguchi
- Graduate School of Science, Osaka City University, Osaka, Japan
| | - A Ogita
- Graduate School of Science, Osaka City University, Osaka, Japan.,Research Center for Urban Health and Sports, Osaka City University, Osaka, Japan
| | - T Tanaka
- Graduate School of Science, Osaka City University, Osaka, Japan.,Research Center for Urban Health and Sports, Osaka City University, Osaka, Japan
| | - K Fujita
- Graduate School of Science, Osaka City University, Osaka, Japan
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28
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Fujita K, Obara S, Maru J. Cytotoxicity of carbon nanofibers with different physicochemical properties. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00723-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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29
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Ichimura T, Kakizuka T, Horikawa K, Seiriki K, Kasai A, Hashimoto H, Fujita K, Watanabe TM, Nagai T. Exploring rare cellular activity in more than one million cells by a transscale scope. Sci Rep 2021; 11:16539. [PMID: 34400683 PMCID: PMC8368064 DOI: 10.1038/s41598-021-95930-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 08/03/2021] [Indexed: 02/07/2023] Open
Abstract
In many phenomena of biological systems, not a majority, but a minority of cells act on the entire multicellular system causing drastic changes in the system properties. To understand the mechanisms underlying such phenomena, it is essential to observe the spatiotemporal dynamics of a huge population of cells at sub-cellular resolution, which is difficult with conventional tools such as microscopy and flow cytometry. Here, we describe an imaging system named AMATERAS that enables optical imaging with an over-one-centimeter field-of-view and a-few-micrometer spatial resolution. This trans-scale-scope has a simple configuration, composed of a low-power lens for machine vision and a hundred-megapixel image sensor. We demonstrated its high cell-throughput, capable of simultaneously observing more than one million cells. We applied it to dynamic imaging of calcium ions in HeLa cells and cyclic-adenosine-monophosphate in Dictyostelium discoideum, and successfully detected less than 0.01% of rare cells and observed multicellular events induced by these cells.
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Affiliation(s)
- T Ichimura
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan.
- PRESTO, Japan Science and Technology Agency, Tokyo, 113-0033, Japan.
| | - T Kakizuka
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - K Horikawa
- Department of Optical Imaging, Advanced Research Promotion Center, Tokushima University, Kuramoto-cho 3-18-15, Tokushima, Tokushima, 770-8503, Japan
| | - K Seiriki
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka, 565-0871, Japan
| | - A Kasai
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka, 565-0871, Japan
| | - H Hashimoto
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Yamadaoka 1-6, Suita, Osaka, 565-0871, Japan
- Institute for Transdisciplinary Graduate Degree Programs, Osaka University, Yamadaoka 1-1, Suita, Osaka, 565-0871, Japan
| | - K Fujita
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
- Department of Applied Physics, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan
| | - T M Watanabe
- Laboratory for Comprehensive Bioimaging, RIKEN Center for Biosystems Dynamics Research (BDR), Minatomachi-minami 2-2-3, Chuo-ku, Kobe, Hyogo, 650-0047, Japan
- Department of Stem Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima, 734-8553, Japan
| | - T Nagai
- Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Yamadaoka 2-1, Suita, Osaka, 565-0871, Japan.
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka, 567-0047, Japan.
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30
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Oiwa K, Fujita K, Lee S, Morishita T, Tsukasaki H, Negoro E, Hara T, Tsurumi H, Ueda T, Yamauchi T. Prognostic impact of six versus eight cycles of standard regimen in patients with diffuse large B-cell lymphoma: propensity score-matching analysis. ESMO Open 2021; 6:100210. [PMID: 34271313 PMCID: PMC8287142 DOI: 10.1016/j.esmoop.2021.100210] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 02/07/2023] Open
Abstract
Background R-CHOP-21 has been the standard treatment for diffuse large B-cell lymphoma (DLBCL), but there is a paucity of evidence focusing on the number of cycles of regimens. Patients and methods We conducted a retrospective study to compare the effectiveness of six cycles of standard regimens versus eight cycles for overall survival (OS) in DLBCL patients using propensity score matching, in consideration of relative dose intensity (RDI). Results A total of 685 patients with newly diagnosed DLBCL were identified in three institutions from 2007 to 2017. Patients treated using six cycles of standard regimens were matched by propensity scores with those treated using eight cycles. A 1 : 1 propensity score matching yielded 138 patient pairs. Eight cycles did not significantly improve OS in the conventional Cox proportional hazards model (hazard ratio 0.849, 95% confidence interval 0.453-1.588, P = 0.608). Restricted cubic spline Cox models for OS confirmed that the effect of the number of cycles was not modified by total average RDI, the International Prognostic Index, and age. Occurrence of adverse events did not differ between six and eight cycles. Conclusion Even considering the impact of RDI, six cycles of the initial standard regimen for DLBCL is not inferior to eight cycles. The optimal number of cycles of standard regimens including R-CHOP-21 for newly diagnosed DLBCL has not been determined. This study was conducted to verify whether six cycles or eight cycles of standard regimen improved the prognosis of DLBCL. Propensity score matching and a Cox hazards model with restricted cubic spline were used in this study. No survival benefit of eight cycles compared with six cycles was seen, even taking into account RDI. Prognosis was no better with eight cycles of (R-)CHOP-21 or THP-COP-21 than with six cycles, after age and IPI modifications.
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Affiliation(s)
- K Oiwa
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology and Oncology, Nagoya City University, Aichi, Japan
| | - K Fujita
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology, Matsunami General Hospital, Gifu, Japan
| | - S Lee
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology, Matsunami General Hospital, Gifu, Japan.
| | - T Morishita
- Department of Healthcare Economics and Quality Management, Graduate School of Medicine, Kyoto University, Yoshida Konoe-cho, Kyoto, Japan
| | - H Tsukasaki
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan; Department of Hematology, Fukui Red Cross Hospital, Fukui, Japan
| | - E Negoro
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan
| | - T Hara
- Department of Hematology, Matsunami General Hospital, Gifu, Japan
| | - H Tsurumi
- Department of Hematology, Matsunami General Hospital, Gifu, Japan
| | - T Ueda
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan
| | - T Yamauchi
- Department of Hematology and Oncology, University of Fukui, Fukui, Japan
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Kanayama Y, Nagata A, Shimotake M, Miyachi F, Fujita K, Koyama M, Uno S. POS0635 COMPARING THE ULTRASONOGRAPHIC EVALUATION IN PATIENTS WITH JAPANESE RHEUMATOID ARTHRITIS BETWEEN BARICITINIB AND TNF ANTAGONIST THERAPY. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.3483] [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] [Indexed: 11/03/2022]
Abstract
Background:Baricitinib (BAR) and TNF antagonist are the important therapeutic agent for the treatment of rheumatoid arthritis.However there is still few studies of improvement of ultrasonographic findings in RA treated comparison with BAR and TNF.Objectives:To evaluate the clinical efficacy of BAR and TNF therapy patients with rheumatoid arthritis (RA) using ultrasonography (US).Methods:Participants comprised 16 and 45 Japanese RA patients who had recently received BAR and TNF. All patients with a diagnosis of RA according to the 2010 ACR/EULAR criteria. Patients underwent clinical and laboratory assessments every 4 weeks from baseline to 24 weeks, and US assessments at baseline, 4, 12 and 24 weeks. Gray scale (GS) and power doppler (PD) signals were scored using a semi-quantitative scale from 0 to 3 at 26 (0-78) synovial sites (22 joints) in the following joints: bilateral first to fifth metacarpopharangeal (MCP) joints (dorsal recess); first interphalangeal (IP) and second to fifth proximal interphalangeal (PIP) (dorsal recess) joints; and the wrists (dorsal radial, median and ulnar). We evaluated the improvement of GS and PD score from baseline to week 24.Results:In the patients receiving BAR (n=16) and TNF (n=45), the mean age was 55.9 vs 54.6 years old (p=0.682), disease duration was 10.2 vs 6.1 years (p=0.094), the rate of MTX use was 75% vs 89% (p=346), the mean MTX dose was 9.3 vs 10.2 mg/w (p=0.443), the rate of ACPA positive was 94% vs 82% (p=0.476), DAS28-ESR was 4.25 vs 4.61 (p=0.289), CDAI was 15.8 vs 18.5 (p=0.210), GS score was 21.6 vs 16.3 (p=0.436) and PD score was 15.0 vs 9.5 (p=0.260). The degree of improvement respective changes in GS and PD score after 4, 12 and 24 weeks were as follows: GS: -7.2 vs -3.7 (p=0.268) and PD: -7.6 vs -2.3 (p=0.158) after 4 weeks, GS: -10.9 vs -5.0 (p=0.161) and PD: -9.2 vs -3.8 (p=0.049) after 12 weeks, GS: -12.9 vs -6.1 (p=0.485) and PD: -11.3 vs -5.7 (p=0.062) after 24 weeks between BAR and TNF (Fig.1, 2). Next, The improvement rate of respective changes in GS and PD score after 4, 12 and 24 weeks were as follows: GS: -23.8% vs -11.6% (p=0.580) and PD: -30.3% vs -16.5% (p=0.343) after 4 weeks, GS: -39.6% vs -15.6% (p=0.129) and PD: -47.1% vs -30.8% (p=0.210) after 12 weeks, GS: -52.2% vs -22.2% (p=0.248) and PD: -77.1% vs -50.1% (p=0.048) after 24 weeks between BAR and TNF.Conclusion:The present study provides evidence supporting both the BAR and TNF therapy showed improvement effect over time, but in a comparison between BAR and TNF, the PD score of BAR showed a siginificant improvement effect compared to TNF at 12 and 24 weeks. It was suggeted that BAR may improve inflammatory synovitis earlier compared to TNF.Disclosure of Interests:None declared
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Iwamura S, Fujita K, Nagaishi S, Sakai K, Mukai SR. Effect of Heat-Treatment Temperature of Carbon Gels on Cathode Performance of Lithium-Air Batteries. J Chem Eng Japan 2021. [DOI: 10.1252/jcej.20we095] [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] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Kazuki Fujita
- Division of Applied Chemistry, Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Shintaroh Nagaishi
- Division of Applied Chemistry, Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Kazuki Sakai
- Division of Applied Chemistry, Graduate School of Chemical Sciences and Engineering, Hokkaido University
| | - Shin R. Mukai
- Division of Applied Chemistry, Faculty of Engineering, Hokkaido University
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Takahashi R, Fujita K, Kobayashi Y, Ogawa T, Teranishi M, Kawamura M. Effect of muscle fatigue on brain activity in healthy individuals. Brain Res 2021; 1764:147469. [PMID: 33838129 DOI: 10.1016/j.brainres.2021.147469] [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: 02/22/2021] [Revised: 03/23/2021] [Accepted: 04/04/2021] [Indexed: 11/20/2022]
Abstract
Fatigue is affected by both peripheral and central factors. However, the interrelationship between muscle fatigue and brain activity has not yet been clarified. This study aimed to clarify the effect of muscle fatigue due to sustained pinch movement on brain activity in healthy individuals using functional near-infrared spectroscopy (fNIRS). Ten healthy adults participated in the study. Pinch movement of isometric contraction was the task to be performed, and electromyogram of the first dorsal interosseous muscle and brain activity by fNIRS were measured in this period. The median power frequency (MdPF) was calculated as an index of muscle fatigue and the oxygen-Hb value in the bilateral premotor and motor areas was calculated as an index of brain activity. As a result, MdPF showed a significant decrease in the middle and later phases compared with that in the early phase (p < 0.05, p < 0.001, respectively) and a significant decrease in the later phase compared with that in the middle phase (p < 0.05). The oxygen-Hb values in the motor cortex were not significantly different between the analysis sections. The oxygen-Hb values in the premotor cortex was significantly increased in the later phase (p < 0.05) compared with that in the early phase. The premotor cortex was found to be specifically activated during muscle fatigue.
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Affiliation(s)
- Ryo Takahashi
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan.
| | - Kazuki Fujita
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, Fukui-city, Fukui, Japan
| | - Yasutaka Kobayashi
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, Fukui-city, Fukui, Japan
| | - Tomoki Ogawa
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan
| | - Masanobu Teranishi
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan
| | - Mimpei Kawamura
- Department of Medical and Social, Faculty of Health Science, Kyoto Koka Women's University, Japan
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Fujita K, Miura M, Funahashi Y, Hatanaka T, Nakamura S. Enantioselective Reaction of 2 H-Azirines with Oxazol-5-(4 H)-ones Catalyzed by Cinchona Alkaloid Sulfonamide Catalysts. Org Lett 2021; 23:2104-2108. [PMID: 33650878 DOI: 10.1021/acs.orglett.1c00259] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enantioselective reaction of 2H-azirines with oxazol-5-(4H)-ones (oxazolones) using a cinchona alkaloid sulfonamide catalyst has been developed. The reaction proceeded at the C-2 position of oxazolones to afford products with consecutive tetrasubstituted stereogenic centers in high yield with high diastereo- and enantioselectivity. The obtained aziridines were converted into various chiral compounds without loss of enantiopurity.
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Affiliation(s)
- Kazuki Fujita
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Masataka Miura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Yasuhiro Funahashi
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Tsubasa Hatanaka
- Department of Chemistry, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan
| | - Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.,Frontier Research Institute for Material Science, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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Kanai O, Ito T, Saito Z, Yamamoto Y, Fujita K, Okamura M, Hashimoto M, Nakatani K, Sawai S, Mio T. P01.17 An Exploratory Study of Associating Factors for Disease Progression After Response to Immune Checkpoint Inhibitor Monotherapy. J Thorac Oncol 2021. [DOI: 10.1016/j.jtho.2021.01.341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Fujita K, Jinnouchi H, Fujii A. [Association between locomotive syndrome and cognitive decline in community-dwelling older adults]. Nihon Koshu Eisei Zasshi 2021; 68:23-32. [PMID: 33342933 DOI: 10.11236/jph.20-043] [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] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Objectives Cognitive function is an important component of health and quality of life in older adults. Locomotive syndrome (LS) is associated with cognitive decline, but this has not been sufficiently shown. Therefore, the purpose of this study was to determine the association between LS and cognitive decline in community-dwelling older adults.Methods Study participants were 3,751 community-dwelling elderly people (1,914 men and 1,837 women; mean age 71.9±5.7 years) who completed the 25-question Geriatric Locomotive Function Scale (GLFS-25) and the Kihon Checklist administered by the local government in Japan between 2014 and 2016. LS stage was assessed using the total score from the GLFS-25 (non-LS: a score of ≤6, Stage 1: a score of ≥7, and Stage 2: a score of ≥16). The risk of cognitive decline was assessed by the applicable number of 3 cognitive-related items on the Kihon Checklist (mild decline: applicable number ≥1, moderate decline: applicable number ≥2). Multinomial logistic regression analysis adjusted for age, BMI, nutritional status, oral function, and homebound status was used to calculate the odds ratios (ORs) of the LS stage for the risk of cognitive decline.Results In the multinomial logistic regression model, participants in both stages 1 and 2 of LS had significantly higher ORs for mild cognitive decline than those without LS in men and women. Similar results were observed with moderate cognitive decline. The ORs of LS stages for moderate cognitive decline were as follows: in the multinomial logistic regression model, OR was 1.65 (95% CI, 0.97-2.81) in stage 1 of LS and 2.99 (95% CI, 1.56-5.73) in stage 2 of LS in men (P<0.001), and OR was 1.97 (95%CI, 1.11-3.50) in LS stage 1 and 2.43 (95% CI, 1.14-5.19) in stage 2 of LS in women (P<0.01).Conclusion This study showed that LS stage had a significant positive association with the decline in cognitive function in older adults and it was more remarkable in cases of increased cognitive decline. Our results suggest that LS might be an independent factor of cognitive decline in community-dwelling elderly people. A longitudinal survey is needed to clarify the association between LS and cognitive function.
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Affiliation(s)
- Kazuki Fujita
- Center for Education in Liberal Arts and Sciences, Osaka University
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37
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Kiran INC, Fujita K, Kobayashi K, Tanaka S, Kitamura M. A Monocationic Zn(II) Acetate Complex of a Chiral Bisamidine Dioxolane Ligand, Naph-diPIM-dioxo-R, for the Asymmetric 1,3-Dipolar Cycloaddition of Tridentate α-Substituted α-Imino Esters and Acrylates to Multi-Substituted Prolines: Importance of an n-π* Interaction for High Enantioselectivity. BCSJ 2021. [DOI: 10.1246/bcsj.20200266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Kazuki Fujita
- Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Kazuki Kobayashi
- Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
| | - Shinji Tanaka
- Research Center for Materials Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Masato Kitamura
- Graduate School of Pharmaceutical Sciences, Nagoya University, Chikusa, Nagoya, Aichi 464-8601, Japan
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Hill C, Umetsu Y, Fujita K, Endo T, Sato K, Yoshizawa A, Rogers SE, Eastoe J, Sagisaka M. Design of Surfactant Tails for Effective Surface Tension Reduction and Micellization in Water and/or Supercritical CO 2. Langmuir 2020; 36:14829-14840. [PMID: 33228361 DOI: 10.1021/acs.langmuir.0c02835] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The interfacial properties and water-in-CO2 (W/CO2) microemulsion (μE) formation with double- and novel triple-tail surfactants bearing trimethylsilyl (TMS) groups in the tails are investigated. Comparisons of these properties are made with those for analogous hydrocarbon (HC) and fluorocarbon (FC) tail surfactants. Surface tension measurements allowed for critical micelle concentrations (CMC) and surface tensions at the CMC (γCMC) to be determined, resulting in the following trend in surface activity FC > TMS > HC. Addition of a third surfactant tail gave rise to increased surface activity, and very low γCMC values were recorded for the double/triple-tail TMS and HC surfactants. Comparing effective tail group densities (ρlayer) of the respective surfactants allowed for an understanding of how γCMC is affected by both the number of surfactant tails and the chemistry of the tails. These results highlight the important role of tail group chemical structure on ρlayer for double-tail surfactants. For triple-tail surfactants, however, the degree to which ρlayer is affected by tail group architecture is harder to discern due to formation of highly dense layers. Stable W/CO2 μEs were formed by both the double- and the triple-tail TMS surfactants. High-pressure small-angle neutron scattering (HP-SANS) has been used to characterize the nanostructures of W/CO2 μEs formed by the double- and triple-tail surfactants, and at constant pressure and temperature, the aqueous cores of the microemulsions were found to swell with increasing water-to-surfactant ratio (W0). A maximum W0 value of 25 was recorded for the triple-tail TMS surfactant, which is very rare for nonfluorinated surfactants. These data therefore highlight important parameters required to design fluorine-free environmentally responsible surfactants for stabilizing W/CO2 μEs.
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Affiliation(s)
- Christopher Hill
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Yasushi Umetsu
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Kazuki Fujita
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Takumi Endo
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Kodai Sato
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Atsushi Yoshizawa
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
| | - Sarah E Rogers
- ISIS-CCLRC, Rutherford Appleton Laboratory, Chilton, Oxon OX11 0QX, United Kingdom
| | - Julian Eastoe
- School of Chemistry, University of Bristol, Cantock's Close, Bristol BS8 1TS, United Kingdom
| | - Masanobu Sagisaka
- Department of Frontier Materials Chemistry, Graduate School of Science and Technology, Hirosaki University, 3 Bunkyo-cho, Hirosaki, Aomori 036-8561, Japan
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Chaithanya Kiran IN, Fujita K, Tanaka S, Kitamura M. Front Cover: Asymmetric Synthesis of Multi‐substituted Prolines via a Catalytic 1,3‐Dipolar Cycloaddition Using a Monocationic Zn
II
OAc Complex of a Chiral Bisamidine Ligand, Naph‐diPIM‐dioxo‐R (ChemCatChem 22/2020). ChemCatChem 2020. [DOI: 10.1002/cctc.202001647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Kazuki Fujita
- Graduate School of Pharmaceutical Sciences Nagoya University Chikusa Nagoya 464-8601 Japan
| | - Shinji Tanaka
- Research Center for Materials Science Nagoya University Chikusa Nagoya 464-8602 Japan
| | - Masato Kitamura
- Graduate School of Pharmaceutical Sciences Nagoya University Chikusa Nagoya 464-8601 Japan
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Chong YX, Liu X, Sharma R, Kostin A, Gu G, Fujita K, Davis JCS, Sprau PO. Severe Dirac Mass Gap Suppression in Sb 2Te 3-Based Quantum Anomalous Hall Materials. Nano Lett 2020; 20:8001-8007. [PMID: 32985892 DOI: 10.1021/acs.nanolett.0c02873] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The quantum anomalous Hall (QAH) effect appears in ferromagnetic topological insulators (FMTIs) when a Dirac mass gap opens in the spectrum of the topological surface states (SSs). Unaccountably, although the mean mass gap can exceed 28 meV (or ∼320 K), the QAH effect is frequently only detectable at temperatures below 1 K. Using atomic-resolution Landau level spectroscopic imaging, we compare the electronic structure of the archetypal FMTI Cr0.08(Bi0.1Sb0.9)1.92Te3 to that of its nonmagnetic parent (Bi0.1Sb0.9)2Te3, to explore the cause. In (Bi0.1Sb0.9)2Te3, we find spatially random variations of the Dirac energy. Statistically equivalent Dirac energy variations are detected in Cr0.08(Bi0.1Sb0.9)1.92Te3 with concurrent but uncorrelated Dirac mass gap disorder. These two classes of SS electronic disorder conspire to drastically suppress the minimum mass gap to below 100 μeV for nanoscale regions separated by <1 μm. This fundamentally limits the fully quantized anomalous Hall effect in Sb2Te3-based FMTI materials to very low temperatures.
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Affiliation(s)
- Yi Xue Chong
- LASSP, Department of Physics, Cornell University, Ithaca, New York 14853, United States
- CMPMS Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Xiaolong Liu
- LASSP, Department of Physics, Cornell University, Ithaca, New York 14853, United States
- Kavli Institute at Cornell, Cornell University, Ithaca, New York 14853, United States
| | - Rahul Sharma
- LASSP, Department of Physics, Cornell University, Ithaca, New York 14853, United States
- CMPMS Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Andrey Kostin
- LASSP, Department of Physics, Cornell University, Ithaca, New York 14853, United States
| | - Genda Gu
- CMPMS Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - K Fujita
- CMPMS Department, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - J C Séamus Davis
- LASSP, Department of Physics, Cornell University, Ithaca, New York 14853, United States
- Department of Physics, University College Cork, Cork T12R5C, Ireland
- Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, U.K
| | - Peter O Sprau
- LASSP, Department of Physics, Cornell University, Ithaca, New York 14853, United States
- Advanced Development Center, ASML, Wilton, Connecticut 06897, United States
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Takahashi S, Mine T, Kawai H, Takai K, Yoshikawa F, Takada M, Fujita K, Nishibori Y, Maruyama T. Conduction gaps after pulmonary vein isolation due to high contact force ablation in patients with atrial fibrillation. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Catheter ablation for atrial fibrillation (AF) with high contact force (CF) has been reported to lead to the gaps after pulmonary vein isolation (PVI), and the appearance of the gaps depends on the site in the left atrium (LA).
Purpose
The aim of this study is to clarify the relationship between the gaps appearance and high CF.
Methods
In the clinical study, 74 consecutive patients (39 males, age 71±9, 46 with paroxysmal AF) underwent conventional PVI with a point-by-point radiofrequency (RF) ablation using a CF sensing catheter (TactiCath SETM). RF energy (J), number of RF point, Lesion index (LSI), force-time integral (FTI), average CF (g), and the degree of LA depression with high CF were evaluated. In the experimental study (figure), the relationship between the ablation area and the degree of depression with high CF using bovine left ventricular wall.
Results
In the clinical study, the gaps were found in 175 of 1182 sites after first path PVI ablation. The CF in the gap sites was higher than without the gap sites in RPV roof, anterior RSPV and anterior RPV carina (18.9±6.8 vs 15.0±5.7g p=0.0262, 26.4±11.6 vs 19.5±6.0g p=0.0029, 22.7±6.4 vs 19.1±5.5g, p=0.0161). Meanwhile, there were no differences in RF energy, number of RF point, LSI, FTI. High CF (≥30g) showed a depression of 3 mm or more in only RPV roof and anterior RPV (figure). In the experimental study, the ablation range narrowed as the indentation deepened with more than 30g CF (r=0.6417, p=0.0625).
Conclusion
Catheter ablation for AF with high contact force might lead to the gaps in RPV roof and anterior RPV site by the reduction of the ablation area due to depression caused by the pressure.
Extension of each contact force
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
| | - T Mine
- Hyogo College of Medicine, cardiovascular division, Hyogo, Japan
| | - H Kawai
- Kawasaki Hospital, Kobe, Japan
| | - K Takai
- Kawasaki Hospital, Kobe, Japan
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Fujita K, Okamura M, Yamamoto Y, Kanai O, Nakatani K, Horimoto K, Hashimoto M, Sawai S, Mio T. 344P Single-centre analysis of anti-resorptive agent-related osteonecrosis of the jaw in lung cancer patients. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Fujita K, Kobayashi Y, Hitosugi M, Nomura T, Nishida T, Tsushima Y, Ogawa T, Kinoshita H, Hori H. Factors Influencing Gait Velocity Improvement Following Botulinum Toxin Injection for Spasticity of the Plantar Flexors in Patients with Stroke. Prog Rehabil Med 2020; 5:20200024. [PMID: 33033774 PMCID: PMC7536357 DOI: 10.2490/prm.20200024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 09/24/2020] [Indexed: 11/20/2022] Open
Abstract
Objective: In patients with hemiplegia, botulinum toxin type A injection for ankle spasticity of the plantar flexors reportedly improves walking speed. This improvement may be affected by background factors and patient baseline physical performance. This study aimed to clarify the factors affecting gait velocity improvement after botulinum toxin type A injection. Methods: Background and evaluation data were collected for 60 patients with stroke who received botulinum toxin type A injection for spasticity of the plantar flexors. The patients were divided into improvement (n=27) and non-improvement (n=33) groups based on the gait velocity change from before injection to 2 weeks after injection. Logistic regression analysis was performed with the improvement and non-improvement groups as response variables and background data and evaluation data at baseline as explanatory variables. Results: The presence or absence of physical therapy following botulinum toxin type A injection (odds ratio: 7.82) was the only significant explanatory variable for gait velocity change. Conclusion: Background factors and physical performance at baseline did not affect gait velocity improvement after botulinum toxin type A injection. If botulinum treatment of the ankle plantar flexors in patients with stroke is targeted at walking performance improvement, then physical therapy following botulinum toxin type A injection should be an essential part of the treatment strategy.
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Affiliation(s)
- Kazuki Fujita
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, Fukui, Japan
| | - Yasutaka Kobayashi
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, Fukui, Japan
| | - Masahito Hitosugi
- Department of Legal Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Tomomi Nomura
- Department of Rehabilitation Physical Therapy, Fukui General Hospital, Fukui, Japan
| | - Tomoko Nishida
- Department of Rehabilitation Physical Therapy, Fukui General Hospital, Fukui, Japan
| | - Yuichi Tsushima
- Department of Rehabilitation Physical Therapy, Fukui General Hospital, Fukui, Japan
| | - Tomoki Ogawa
- Department of Rehabilitation Physical Therapy, Fukui General Hospital, Fukui, Japan
| | - Hirotaka Kinoshita
- Department of Rehabilitation Physical Therapy, Fukui General Hospital, Fukui, Japan
| | - Hideaki Hori
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, Fukui, Japan
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44
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Chaithanya Kiran IN, Fujita K, Tanaka S, Kitamura M. Asymmetric Synthesis of Multi‐substituted Prolines via a Catalytic 1,3‐Dipolar Cycloaddition Using a Monocationic Zn
II
OAc Complex of a Chiral Bisamidine Ligand, Naph‐diPIM‐dioxo‐R. ChemCatChem 2020. [DOI: 10.1002/cctc.202001202] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Kazuki Fujita
- Graduate School of Pharmaceutical Sciences Nagoya University Chikusa Nagoya 464-8601 Japan
| | - Shinji Tanaka
- Research Center for Materials Science Nagoya University Chikusa Nagoya 464-8602 Japan
| | - Masato Kitamura
- Graduate School of Pharmaceutical Sciences Nagoya University Chikusa Nagoya 464-8601 Japan
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45
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Fukumoto K, Fujita K, Saito H, Sekio Y, Yamazaki M. Effect of temperature history on swelling behavior of V-Fe binary alloy irradiated in a fast reactor Joyo. Nuclear Materials and Energy 2020. [DOI: 10.1016/j.nme.2020.100760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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46
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Fujita K, Kobayashi Y, Miaki H, Hori H, Tsushima Y, Sakai R, Nomura T, Ogawa T, Kinoshita H, Nishida T, Hitosugi M. Pedaling improves gait ability of hemiparetic patients with stiff-knee gait: fall prevention during gait. J Stroke Cerebrovasc Dis 2020; 29:105035. [PMID: 32807447 DOI: 10.1016/j.jstrokecerebrovasdis.2020.105035] [Citation(s) in RCA: 5] [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: 04/16/2020] [Revised: 06/01/2020] [Accepted: 06/04/2020] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Stiff-knee gait, which is a gait abnormality observed after stroke, is characterized by decreased knee flexion angles during the swing phase, and it contributes to a decline in gait ability. This study aimed to identify the immediate effects of pedaling exercises on stiff-knee gait from a kinesiophysiological perspective. METHODS Twenty-one patients with chronic post-stroke hemiparesis and stiff-knee gait were randomly assigned to a pedaling group and a walking group. An ergometer was set at a load of 5 Nm and rotation speed of 40 rpm, and gait was performed at a comfortable speed; both the groups performed the intervention for 10 min. Kinematic and electromyographical data while walking on flat surfaces were immediately measured before and after the intervention. RESULTS In the pedaling group, activity of the rectus femoris significantly decreased from the pre-swing phase to the early swing phase during gait after the intervention. Flexion angles and flexion angular velocities of the knee and hip joints significantly increased during the same period. The pedaling group showed increased step length on the paralyzed side and gait velocity. CONCLUSIONS Pedaling increases knee flexion during the swing phase in hemiparetic patients with stiff-knee gait and improves gait ability.
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Affiliation(s)
- Kazuki Fujita
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-city 910-3190, Fukui, Japan.
| | - Yasutaka Kobayashi
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-city 910-3190, Fukui, Japan.
| | - Hiroichi Miaki
- Faculty of Health Sciences, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa University, Kanazawa-city, Ishikawa, Japan.
| | - Hideaki Hori
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-city 910-3190, Fukui, Japan.
| | - Yuichi Tsushima
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan.
| | - Ryo Sakai
- Department of Rehabilitation, Faculty of Health Science, Fukui Health Science University, 55-13-1 Egami, Fukui-city 910-3190, Fukui, Japan.
| | - Tomomi Nomura
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan.
| | - Tomoki Ogawa
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan.
| | - Hirotaka Kinoshita
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan.
| | - Tomoko Nishida
- Department of Physical Therapy Rehabilitation, Fukui General Hospital, Fukui-city, Fukui, Japan.
| | - Masahito Hitosugi
- Department of Legal Medicine, Shiga University of Medical Science, Otsu-city, Shiga, Japan.
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47
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Kita S, Fujita K, Imai H, Aoyagi M, Shimazaki K, Yonemitsu I, Omura S, Ono T. Postoperative stability of conventional bimaxillary surgery compared with maxillary impaction surgery with mandibular autorotation for patients with skeletal class II retrognathia. Br J Oral Maxillofac Surg 2020; 58:57-61. [DOI: 10.1016/j.bjoms.2019.10.309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 10/16/2019] [Indexed: 11/29/2022]
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48
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Edkins SD, Kostin A, Fujita K, Mackenzie AP, Eisaki H, Uchida S, Sachdev S, Lawler MJ, Kim EA, Séamus Davis JC, Hamidian MH. Magnetic field-induced pair density wave state in the cuprate vortex halo. Science 2019; 364:976-980. [PMID: 31171694 DOI: 10.1126/science.aat1773] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Accepted: 05/15/2019] [Indexed: 11/02/2022]
Abstract
High magnetic fields suppress cuprate superconductivity to reveal an unusual density wave (DW) state coexisting with unexplained quantum oscillations. Although routinely labeled a charge density wave (CDW), this DW state could actually be an electron-pair density wave (PDW). To search for evidence of a field-induced PDW, we visualized modulations in the density of electronic states N(r) within the halo surrounding Bi2Sr2CaCu2O8 vortex cores. We detected numerous phenomena predicted for a field-induced PDW, including two sets of particle-hole symmetric N(r) modulations with wave vectors QP and 2Q P , with the latter decaying twice as rapidly from the core as the former. These data imply that the primary field-induced state in underdoped superconducting cuprates is a PDW, with approximately eight CuO2 unit-cell periodicity and coexisting with its secondary CDWs.
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Affiliation(s)
- S D Edkins
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853, USA.,Department of Applied Physics, Stanford University, Stanford, CA 94305, USA.,School of Physics and Astronomy, University of St. Andrews, Fife KY16 9SS, Scotland
| | - A Kostin
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853, USA
| | - K Fujita
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853, USA.,Condensed Matter Physics Department, Brookhaven National Laboratory, Upton, NY, USA
| | - A P Mackenzie
- School of Physics and Astronomy, University of St. Andrews, Fife KY16 9SS, Scotland.,Max-Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
| | - H Eisaki
- Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, Japan
| | - S Uchida
- Department of Physics, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Subir Sachdev
- Department of Physics, Harvard University, Cambridge, MA 02138, USA
| | - Michael J Lawler
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853, USA.,Department of Physics and Astronomy, Binghamton University, Binghamton, NY 13902, USA
| | - E-A Kim
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853, USA
| | - J C Séamus Davis
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853, USA. .,Condensed Matter Physics Department, Brookhaven National Laboratory, Upton, NY, USA.,Department of Physics, University College Cork, Cork T12R5C, Ireland.,Clarendon Laboratory, Oxford University, Oxford, OX1 3PU, UK
| | - M H Hamidian
- Laboratory of Atomic and Solid State Physics, Department of Physics, Cornell University, Ithaca, NY 14853, USA. .,Department of Physics, Harvard University, Cambridge, MA 02138, USA
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49
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Tsukui H, Fujita K, Iwasa S, Yamazaki K. P1016Novel surgical ablation technique using ultrasonic scalpel for atrial fibrillation in mitral valve surgery. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Objective
Radiofrequency, cryoablation and cut-and-sew technique have been used for surgical ablation to treat atrial fibrillation. Ultrasonicscalpel is a surgical instrument used to simultaneously cut and cauterize tissue by ultrasound vibration. This device causes minimal lateral thermal tissue damage and increases the tissue penetration depth linearly with time. These features are suitable for surgical ablation for atrial fibrillation. This study evaluated surgical ablation with ultrasonic scalpel for atrial fibrillation.
Methods
From October 2017 to February 2019, 46 patients (mean age: 71.8 years [46–86], 28 male) with mitral valve procedure underwent surgical ablation using ultrasonic scalpel for atrial fibrillation. The ablation lines were carried out with Cox maze procedure or pulmonary vein isolation (PVI) on cardiopulmonary bypass. Endocardial atrial wall was ablated by direct touch with blade in a few seconds at energy level 5. Pathological study of left atrial wall received ablation with ultrasonic scalpel was carried out.
Results
Type of preoperative atrial fibrillation was persistent in 33 and paroxysmal in 13 patients. Mean left atrial diameter was 49.0 mm (35–81). Surgical ablation using ultrasonic scalpel was carried out to left atrium only or PVI in 33 patients and both atria in 13 patients. Mean surgical ablation time was 4 minutes and 21 seconds. Mitral valve repair and replacement were performed in 33 and replacement in 13 patients, respectively. Simultaneous surgery included 43 tricuspid valve repairs, 11 aortic valve replacements, and 7 coronary artery bypass grafting. Cardiopulmonary bypass and aortic cross-clamp times were 142.6 (70–261) and 98.6 (47–202) minutes, respectively. No operative death or perioperative stroke were observed. Thirty-eight patients (82.6%) returned to sinus rhythm immediately after surgery. Sinus rhythm was maintained in 30 patients (65.2%) in the mid-term period with average 142.2 days after surgery (7–426 days). Pathological study showed the atrial walls were not ablated transmurally. No complications including bleeding and tissue injury were observed.
Conclusion
Surgical ablation with ultrasonic scalpel for atrial fibrillation was feasible and provided satisfactory outcomes immediately after surgery and at mid-term. This technique can be performed in a short time without complications. Interestingly, pathological study showed no transmural tissue ablation despite of successful outcomes. This may imply transmural ablation is not necessarily mandatory for surgical ablation. Long-term follow-up are required to evaluate this technique.
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Affiliation(s)
- H Tsukui
- Hokkaido Cardiovascular Hospital, Sapporo, Japan
| | - K Fujita
- Hokkaido Cardiovascular Hospital, Sapporo, Japan
| | - S Iwasa
- Hokkaido Cardiovascular Hospital, Sapporo, Japan
| | - K Yamazaki
- Hokkaido Cardiovascular Hospital, Sapporo, Japan
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50
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Fujita K, Tanaka S, Iizumi K, Akiyama S, Uchida K, Ogata M, Aoki D, Hosomi O, Kubohara Y. Melibiosamine, a novel oligosaccharide, suppresses mitogen-induced IL-2 production via inactivation of NFAT and NFκB in Jurkat cells. Biochem Biophys Rep 2019; 19:100658. [PMID: 31431927 PMCID: PMC6580327 DOI: 10.1016/j.bbrep.2019.100658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/21/2019] [Accepted: 06/09/2019] [Indexed: 11/23/2022] Open
Abstract
d-Glucosamine (GlcNH2) and several of its derivatives are known to possess immunosuppressive activities in various immune cell lines. The novel GlcNH2-containing oligosaccharide Galα1-6GlcNH2 (designated melibiosamine; MelNH2) is expected to be immunosuppressive also. In Jurkat cells (immortalized human T lymphocytes), interleukin 2 (IL-2) production (an index of the T-cell immune response) can be induced by stimulation with a mitogen, such as concanavalin A. Here, we compared the effects of GlcNH2 and MelNH2 on concanavalin A-induced IL-2 production (CIIP) in Jurkat cells and found that GlcNH2 and MelNH2 at millimolar levels both significantly suppressed CIIP without affecting cell viability. When we examined the effects of GlcNH2 and MelNH2 on the activation of the three transcription factors required for CIIP—NFAT (nuclear factor of activated T-cells), NFκB (nuclear factor kappa-light-chain-enhancer of activated B cells), and AP-1 (activator protein 1)—we found that GlcNH2 and MelNH2 both suppressed CIIP by inhibiting the activation of NFAT and NFκB, but, unlike GlcNH2, MelNH2 also promoted the activation of AP-1. These results suggest that MelNH2 may be a potentially useful lead compound for development as an immunosuppressive or anti-inflammatory drug. Immunosuppressive effects of MelNH2 (Galα1-6GlcNH2) were examined in Jurkat cells. Concanavalin A induces IL-2 production in Jurkat cells. MelNH2 at millimolar levels dose-dependently suppressed ConA-induced IL-2 production. MelNH2 inhibited the activation of NFAT and NFκB, which control IL-2 expression.
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Key Words
- AP-1, activator protein 1
- CIIP, ConA-induced IL-2 production
- ConA, concanavalin A
- CsA, cyclosporine A
- GlcNH2, glucosamine
- Glucosamine
- IL-2, interleukin-2
- IM, ionomycin
- Immunosuppressive drug
- Interleukin 2
- Jurkat cell
- MelNH2, melibiosamine
- Melibiosamine
- NFAT, nuclear factor of activated T-cells
- NFκB, nuclear factor kappa-light-chain-enhancer of activated B cells
- PIIP, PMA/IM-induced IL-2 production
- PMA, phorbol 12-myristate 13-acetate
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Affiliation(s)
- Kazuki Fujita
- Laboratory of Health and Life Science, Department of Health Science, Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, 270-1695, Japan
| | - Susumu Tanaka
- Department of Health and Nutrition, Faculty of Health and Welfare, Takasaki University of Health and Welfare, Takasaki, Gunma, 370-0033, Japan
| | - Kyoichi Iizumi
- Laboratory of Health and Life Science, Department of Health Science, Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, 270-1695, Japan
| | - Shuri Akiyama
- Department of Health and Nutrition, Faculty of Health and Welfare, Takasaki University of Health and Welfare, Takasaki, Gunma, 370-0033, Japan
| | - Kaoru Uchida
- Department of Health and Nutrition, Faculty of Health and Welfare, Takasaki University of Health and Welfare, Takasaki, Gunma, 370-0033, Japan
| | - Makoto Ogata
- Department of Chemistry and Biochemistry, National Institute of Technology, Fukushima College, Iwaki, Fukushima, 970-8034, Japan
| | - Daichi Aoki
- Department of Chemistry and Biochemistry, National Institute of Technology, Fukushima College, Iwaki, Fukushima, 970-8034, Japan
| | - Osamu Hosomi
- Laboratory of Health and Life Science, Department of Health Science, Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, 270-1695, Japan
| | - Yuzuru Kubohara
- Laboratory of Health and Life Science, Department of Health Science, Faculty of Health and Sports Science, Juntendo University, Inzai, Chiba, 270-1695, Japan.,Laboratory of Health and Life Science, Graduate School of Health and Sports Science, Juntendo University, Inzai, Chiba, 270-1695, Japan
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