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Kaneko K, Koriyama S, Tsuzuki S, Masui K, Kanasaki R, Yamamoto A, Nagao M, Muragaki Y, Kawamata T, Sakai S. Association Between Pretreatment 11C-Methionine Positron Emission Tomography Metrics, Histology, and Prognosis in 125 Newly Diagnosed Patients with Adult-Type Diffuse Glioma Based on the World Health Organization 2021Classification. World Neurosurg 2024:S1878-8750(24)00550-3. [PMID: 38583563 DOI: 10.1016/j.wneu.2024.03.164] [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: 03/05/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/09/2024]
Abstract
OBJECTIVE To clarify the relationships between 11C-methionine (MET) positron emission tomography (PET) metrics and the histology, genetics, and prognosis of adult-type diffuse glioma (ADG) based on the World Health Organization (WHO) 2021 classification. METHODS A total of 125 newly diagnosed patients with ADG were enrolled. We compared the maximum standardized uptake value (SUVmax), tumor-to-normal background ratio (TNR), metabolic tumor volume (MTV), and total lesion methionine uptake (TLMU) to the histology and genetics of the patients with ADG. We also evaluated the prognoses of the 93 surgically treated patients. RESULTS The patients with isocitrate dehydrogenase wild ADG showed significantly higher MET-PET metrics (P < 0.05 for all parameters), significantly shorter overall survival and progression-free survival (P < 0.0001 for both) than those of the patients with isocitrate dehydrogenase mutant (IDHm) ADG. In the IDHm ADG group, the SUVmax, MTV, and TLMU values were significantly higher in patients with IDHm grade (G) 4 astrocytoma than patients with IDHm G2/3 astrocytoma (P < 0.05 for all), but not than patients with G2-3 oligodendroglioma. The progression-free survival was significantly shorter in the patients with G4 astrocytoma versus the patients with G2/3 astrocytoma and G3 oligodendroglioma (P < 0.05 for both). The SUVmax and TNR values were significantly higher in recurrent patients than nonrecurrent patients (P < 0.01 for both), but no significant differences were found in MTV or TLMU values. CONCLUSIONS MET-PET metrics well reflect the histological subtype, WHO grade and prognosis of ADG based on the 2021 WHO classification, with the exception of oligodendroglial tumors. Volumetric parameters were not significantly associated with recurrence, unlike the SUVmax and TNR.
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Affiliation(s)
- Koichiro Kaneko
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan.
| | - Shunichi Koriyama
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Shunsuke Tsuzuki
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Kenta Masui
- Department of Pathology, Tokyo Women's Medical University, Tokyo, Japan
| | - Rie Kanasaki
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Yoshihiro Muragaki
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Takakazu Kawamata
- Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
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Kaneko K, Nagao M, Ueda K, Yamamoto A, Sakai S. Simultaneous evaluation of brain metastasis and thoracic cancer using semiconductor 11C-methionine PET/CT imaging. Ann Nucl Med 2024; 38:278-287. [PMID: 38386272 DOI: 10.1007/s12149-024-01908-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 12/27/2023] [Indexed: 02/23/2024]
Abstract
OBJECTIVE To investigate the potential of whole-body digital 11C-methionine (MET) PET/CT imaging for simultaneous evaluation of thoracic cancer patients suspected of local recurrence (LR) after stereotactic radiosurgery (SRS) for brain metastasis. METHODS A total of 45 lung or breast cancer patients suspected of LR after SRS were investigated using brain and whole-body MET-PET/CT scans. We compared the tumor-to-normal ratio (TNR) and maximum standardized uptake values (SUVmax) between patients with LR and radiation necrosis (RN) and performed receiver operating characteristic (ROC) analyses. We also investigated associations among extracranial recurrence, intracranial recurrence, primary site, and initial treatment type. RESULTS A total of 44 LR and 14 RN lesions were analyzed. In the ROC analyses for differentiating LR from RN, TNR showed higher area under the curve (AUC) (0.82) than SUVmax (0.79), and the cutoff TNR value (2.12) was higher than current cutoff values of conventional PET systems. The whole-body scans detected extracranial recurrences in 31.1% of the patients. Recurrence rates were not significantly correlated with existence of intracranial recurrence or primary site, but patients who underwent non-surgical treatment (consisting of stage III/ IV patients according to the Union for International Cancer Control TNM classification or small-cell lung cancer patients) showed significantly higher recurrence than the surgically treated patients (68.8% vs. 10.3%, p = 0.0001). CONCLUSION In digital MET-PET/CT imaging, TNR was a more useful parameter to differentiate LR from RN than SUVmax, and the cutoff value was higher than those with conventional PET systems. Additional whole-body scans could detect extracranial recurrence and would be especially useful for advanced thoracic cancer patients who underwent non-surgical treatment.
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Affiliation(s)
- Koichiro Kaneko
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Kaori Ueda
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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Rodrigues TC, Figueiredo DB, Gonçalves VM, Kaneko K, Saleem IY, Miyaji EN. Liposome-based dry powder vaccine immunization targeting the lungs induces broad protection against pneumococcus. J Control Release 2024; 368:184-198. [PMID: 38395155 DOI: 10.1016/j.jconrel.2024.02.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/05/2024] [Accepted: 02/20/2024] [Indexed: 02/25/2024]
Abstract
Streptococcus pneumoniae is an important human pathogen. Currently used conjugate vaccines are effective against invasive disease, but protection is restricted to serotypes included in the formulation, leading to serotype replacement. Furthermore, protection against non-invasive disease is reported to be considerably lower. The development of a serotype-independent vaccine is thus important and Pneumococcal surface protein A (PspA) is a promising vaccine candidate. PspA shows some diversity and can be classified in 6 clades and 3 families, with families 1 and 2 being the most frequent in clinical isolates. The ideal vaccine should thus induce protection against the two most common families of PspA. The aim of this work was to develop a liposome-based vaccine containing PspAs from family 1 and 2 and to characterize its immune response. Liposomes (LP) composed of dipalmitoylphosphatidylcholine (DPPC) and 3β-[N-(N',N'-dimethylaminoethane)-carbamoyl]cholesterol (DC-Chol) with or without α-galactosylceramide (α-GalCer) were produced by microfluidics, encapsulating PspA from clade 1 (PspA1, family 1) and/or clade 4 (PspA4Pro, family 2) followed by spray-drying with trehalose to form nanocomposite microparticles carriers (NCMP). LP/NCMPs showed good stability and preservation of protein activity. LP/NCMPs containing PspA1 and/or PspA4Pro were used for immunization of mice targeting the lungs. High serum IgG antibody titers against both PspA1 and PspA4Pro were detected in animals immunized with LP/NCMPs containing α-GalCer, with a balance of IgG1 and IgG2a titers. IgG in sera from immunized mice bound to pneumococcal strains from different serotypes and expressing different PspA clades, indicating broad recognition. Mucosal IgG and IgA were also detected. Importantly, immunization with LP/NCMPs induced full protection against strains expressing PspAs from family 1 and 2. Furthermore, CD4+ resident memory T cells were detected in the lungs of the immunized animals that survived the challenge.
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Affiliation(s)
- T C Rodrigues
- Laboratório de Bacteriologia, Instituto Butantan, São Paulo, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Universidade de São Paulo, São Paulo, Brazil
| | - D B Figueiredo
- Programa de Pós-Graduação Interunidades em Biotecnologia, Universidade de São Paulo, São Paulo, Brazil; Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, São Paulo, Brazil
| | - V M Gonçalves
- Programa de Pós-Graduação Interunidades em Biotecnologia, Universidade de São Paulo, São Paulo, Brazil; Laboratório de Desenvolvimento de Vacinas, Instituto Butantan, São Paulo, Brazil
| | - K Kaneko
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, Merseyside, United Kingdom
| | - I Y Saleem
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, Merseyside, United Kingdom.
| | - E N Miyaji
- Laboratório de Bacteriologia, Instituto Butantan, São Paulo, Brazil; Programa de Pós-Graduação Interunidades em Biotecnologia, Universidade de São Paulo, São Paulo, Brazil.
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Kawakubo M, Nagao M, Kaimoto Y, Nakao R, Yamamoto A, Kawasaki H, Iwaguchi T, Matsuo Y, Kaneko K, Sakai A, Sakai S. Deep learning approach using SPECT-to-PET translation for attenuation correction in CT-less myocardial perfusion SPECT imaging. Ann Nucl Med 2024; 38:199-209. [PMID: 38151588 PMCID: PMC10884131 DOI: 10.1007/s12149-023-01889-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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Accepted: 11/23/2023] [Indexed: 12/29/2023]
Abstract
OBJECTIVE Deep learning approaches have attracted attention for improving the scoring accuracy in computed tomography-less single photon emission computed tomography (SPECT). In this study, we proposed a novel deep learning approach referring to positron emission tomography (PET). The aims of this study were to analyze the agreement of representative voxel values and perfusion scores of SPECT-to-PET translation model-generated SPECT (SPECTSPT) against PET in 17 segments according to the American Heart Association (AHA). METHODS This retrospective study evaluated the patient-to-patient stress, resting SPECT, and PET datasets of 71 patients. The SPECTSPT generation model was trained (stress: 979 image pairs, rest: 987 image pairs) and validated (stress: 421 image pairs, rest: 425 image pairs) using 31 cases of SPECT and PET image pairs using an image-to-image translation network. Forty of 71 cases of left ventricular base-to-apex short-axis images were translated to SPECTSPT in the stress and resting state (stress: 1830 images, rest: 1856 images). Representative voxel values of SPECT and SPECTSPT in the 17 AHA segments against PET were compared. The stress, resting, and difference scores of 40 cases of SPECT and SPECTSPT were also compared in each of the 17 segments. RESULTS For AHA 17-segment-wise analysis, stressed SPECT but not SPECTSPT voxel values showed significant error from PET at basal anterior regions (segments #1, #6), and at mid inferoseptal regions (segments #8, #9, and #10). SPECT, but not SPECTSPT, voxel values at resting state showed significant error at basal anterior regions (segments #1, #2, and #6), and at mid inferior regions (segments #8, #9, and #11). Significant SPECT overscoring was observed against PET in basal-to-apical inferior regions (segments #4, #10, and #15) during stress. No significant overscoring was observed in SPECTSPT at stress, and only moderate over and underscoring in the basal inferior region (segment #4) was found in the resting and difference states. CONCLUSIONS Our PET-supervised deep learning model is a new approach to correct well-known inferior wall attenuation in SPECT myocardial perfusion imaging. As standalone SPECT systems are used worldwide, the SPECTSPT generation model may be applied as a low-cost and practical clinical tool that provides powerful auxiliary information for the diagnosis of myocardial blood flow.
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Affiliation(s)
- Masateru Kawakubo
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-Ku, Tokyo, 162-8666, Japan.
| | - Yoko Kaimoto
- Department of Radiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Hiroshi Kawasaki
- Department of Advanced Information Technology, Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan
| | - Takafumi Iwaguchi
- Department of Advanced Information Technology, Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan
| | - Yuka Matsuo
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Koichiro Kaneko
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
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Kaneko K, Nagao M, Yamamoto A, Yano K, Honda G, Tokushige K, Sakai S. Patlak Reconstruction Using Dynamic 18 F-FDG PET Imaging for Evaluation of Malignant Liver Tumors : A Comparison of HCC, ICC, and Metastatic Liver Tumors. Clin Nucl Med 2024; 49:116-123. [PMID: 38108830 DOI: 10.1097/rlu.0000000000005013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2023]
Abstract
PURPOSE OF THE REPORT The aim of this study was to explore the different patterns of dynamic whole-body (D-WB) FDG PET/CT parameters among liver malignancy types as potential diagnostic clues and investigate the association between static and dynamic PET/CT parameters for each tumor histology. PATIENTS AND METHODS Seventy-one patients with intrahepatic cholangiocarcinoma (ICC), metastatic liver tumor (MLT), or hepatocellular carcinoma (HCC) who underwent D-WB and static dual-time-point FDG PET/CT were enrolled. We obtained Pearson correlation coefficients between the metabolic rate of FDG (MR FDG ; mg/min/ 100ml) or distribution volume of free FDG (DV FDG , %) and static PET/CT parameters. We compared MR FDG and DV FDG values by tumor type and performed receiver operating characteristic analyses for MR FDG and static images. RESULTS A total of 12 ICC, 116 MLT, and 36 HCC lesions were analyzed. MR FDG and DV FDG showed excellent correlation with early (SUV e ) and delayed SUV max (SUV d ) ( r = 0.71~0.97), but DV FDG in the HCC lesions did not ( r = 0.62 and 0.69 for SUV e and SUV d , respectively) ( P < 0.001 for all). HCC lesions showed significantly lower MR FDG (2.43 ± 1.98) and DV FDG (139.95 ± 62.58) than ICC (5.02 ± 3.56, 207.06 ± 97.13) and MLT lesions (4.51 ± 2.47, 180.13 ± 75.58) ( P < 0.01 for all). The optimal MR FDG could differentiate HCC from ICC and MLT with areas under the curve of 0.84 and 0.80, respectively. Metastatic liver tumor lesions showed the widest distribution of MR FDG and DV FDG values but with no significant difference among most primary sites. CONCLUSIONS MR FDG was strongly correlated with SUV max in the 3 malignancies and showed utility for differentiating HCC from ICC and MLT. Each tumor type has a different glucose metabolism, and D-WB FDG PET/CT imaging has the potential to visualize those differences.
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Affiliation(s)
- Koichiro Kaneko
- From the Department of Diagnostic Imaging & Nuclear Medicine
| | - Michinobu Nagao
- From the Department of Diagnostic Imaging & Nuclear Medicine
| | | | - Kyoko Yano
- From the Department of Diagnostic Imaging & Nuclear Medicine
| | - Goro Honda
- Department of Surgery, Institute of Gastroenterology
| | - Katsutoshi Tokushige
- Department of Internal Medicine, Institute of Gastroenterology, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- From the Department of Diagnostic Imaging & Nuclear Medicine
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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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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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Ishida A, Kaneko K, Minamimoto R, Hotta M, Inoshita N, Takano K, Yamada S. Clinical decision-making based on 11C-methionine PET in recurrent Cushing's disease with equivocal MRI findings. J Neurosurg 2023; 139:1671-1680. [PMID: 37410630 DOI: 10.3171/2023.5.jns23179] [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: 02/17/2023] [Accepted: 05/09/2023] [Indexed: 07/08/2023]
Abstract
OBJECTIVE Diagnosis and accurate localization of recurrent tumors in Cushing's disease (CD) are challenging, especially after multiple transsphenoidal surgeries (TSSs) or radiosurgery. Even experts face difficulties in detecting these recurrent tumors, and a favorable surgical outcome is not guaranteed. In this report, the authors aimed to determine the usefulness of 11C-methionine positron emission tomography (MET-PET) for evaluating patients with recurrent CD with inconclusive magnetic resonance imaging (MRI) lesions and to develop a treatment protocol for these cases. METHODS In this retrospective study of patients with recurrent CD in the period between April 2018 and December 2022, the authors assessed the usefulness of MET-PET in determining whether equivocal MRI findings were recurrent tumors or postsurgical cavities and deciding further treatment options. All patients had undergone at least one TSS, and most had undergone multiple TSSs and had pathologically confirmed corticotroph tumors with hypercortisolemia. RESULTS Overall, 15 patients with recurrent CD (10 females and 5 males) were included, all of whom had undergone MET-PET. All patients had been subjected to multiple treatments, including TSSs or radiosurgeries. Their MRI scans demonstrated less-enhanced lesions that were not confirmed as recurrences even with cutting-edge MRI because they could not be distinguished from postsurgical changes with confidence. MET uptake was positive in 8 patients (9 examinations) and negative in 7. Following MET-PET, repeat TSS was performed in 5 patients. Corticotroph tumors were identified in all 5 patients, even though one of them had negative MET uptake. The MET uptake precisely identified a tumor location on the opposite side of the MRI-suspected lesion in 2 patients. Meanwhile, patients with negative uptake and mild hypercortisolism were only observed. Nonsurgical options were also used in other patients: temozolomide (TMZ) was administered in 2 patients owing to a prior history of multiple TSSs and radiosurgery and the drug-resistant nature of the disease. TMZ was highly effective in these patients; their Cushing's symptoms ameliorated, and their adrenocorticotropic hormone and cortisol levels continued to decline. Interestingly, MET uptake disappeared following TMZ treatment. CONCLUSIONS MET-PET is extremely useful for confirming equivocal lesions on MRI in patients with recurrent CD and for deciding further treatment options. The authors propose a novel protocol based on MET-PET results for treating patients with relapsing CD in whom the recurrent tumors cannot be confirmed with MRI.
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Affiliation(s)
- Atsushi Ishida
- 1Hypothalamic and Pituitary Center, Moriyama Memorial Hospital, Tokyo
| | - Koichiro Kaneko
- 2Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, Tokyo
| | - Ryogo Minamimoto
- 3Department of Radiology, Division of Nuclear Medicine, National Center for Global Health and Medicine, Tokyo
| | - Masatoshi Hotta
- 3Department of Radiology, Division of Nuclear Medicine, National Center for Global Health and Medicine, Tokyo
| | | | - Koji Takano
- 5Endocrinology, Moriyama Memorial Hospital, Tokyo, Japan
| | - Shozo Yamada
- 1Hypothalamic and Pituitary Center, Moriyama Memorial Hospital, Tokyo
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Yamamoto A, Nagao M, Shirai Y, Nakao R, Sakai A, Kaneko K, Arashi H, Minami Y, Sakai S, Yamaguchi J. Cardiac magnetic resonance imaging T1 mapping and late gadolinium enhancement entropy: Prognostic value in patients with systemic sclerosis. J Cardiol 2023; 82:343-348. [PMID: 37031795 DOI: 10.1016/j.jjcc.2023.04.004] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 03/09/2023] [Accepted: 03/13/2023] [Indexed: 04/11/2023]
Abstract
BACKGROUND Systemic sclerosis (SSc) affects the myocardium, thereby resulting in a poor prognosis. Late gadolinium enhancement (LGE) entropy, derived from routine cardiac magnetic resonance (CMR) LGE images, is an index that reflects the complexity of the left ventricular myocardium. The aim of this study was to investigate whether LGE entropy can serve as a prognostic factor in patients with SSc. METHODS Twenty-four patients with SSc, who underwent CMR-T1 mapping and LGE to identify myocardial damage, were enrolled, and LGE entropy was measured. Extracellular volume (ECV) values were calculated using the same CMR-LGE images. The endpoint was major adverse cardiac events (MACEs), comprising all-cause death, hospitalization due to heart failure, and the onset of sustained ventricular tachycardia and ventricular fibrillation. The ability to predict MACE was assessed using receiver operating characteristic (ROC) analysis, and the predictability of LGE entropy was analyzed using Kaplan-Meier analysis. RESULTS The ROC curve analysis demonstrated a cut-off value of 7.39 for MACE with LGE entropy and had a sensitivity and specificity of 80 % and 79 %, respectively. Patients with LGE entropy ≥7.39 had a significantly higher MACE rate than those with LGE entropy <7.39 (p = 0.010). Moreover, LGE entropy ≥7.39 was a poor prognostic factor in patients without elevated ECV values. CONCLUSIONS LGE entropy can be used to predict MACE and allows for further risk stratification in addition to ECV determination.
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Affiliation(s)
- Atsushi Yamamoto
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan; Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan.
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Yurie Shirai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Koichiro Kaneko
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Hiroyuki Arashi
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuichiro Minami
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Junichi Yamaguchi
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
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Kaimoto Y, Fukushima K, Kanaya K, Asanuma M, Aoba K, Yamamoto A, Nakao R, Kaneko K, Nagao M, Chida K. Optimization of Intraventricular Radioactive Concentration for 13N ammonia PET with Time-of-Flight Scanner: Simplified Phantom Study with Noise Equivalent Count Rate Analysis. Ann Nucl Cardiol 2023; 9:33-39. [PMID: 38058574 PMCID: PMC10696149 DOI: 10.17996/anc.23-00178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2022] [Revised: 02/02/2023] [Accepted: 02/09/2023] [Indexed: 12/08/2023]
Abstract
Background: Myocardial blood flow quantification (MBF) is one of the distinctive features for cardiac positron emission tomography. The MBF calculation is mostly obtained by estimating the input function from the time activity curve in dynamic scan. However, there is a substantial risk of count-loss because the high radioactivity pass through the left ventricular (LV) cavity within a short period. We aimed to determine the optimal intraventricular activity using the noise equivalent count rate (NECR) analysis with simplified phantom model. Methods: Positron emission tomography computed tomography scanner with LYSO crystal and time of flight was used for phantom study. 150 MBq/mL of 13N was filled in 10 mL of syringe, placed in neck phantom to imitate end-systolic small LV. 3D list-mode acquisition was repeatedly performed along radioactive decay. Net true and random count rate were calculated and compared to the theoretical activity in the syringe. NECR curve analysis was used to determine the optimal radioactive concentration. Result: The attenuation curves showed good correlation to the theoretical activity between 20 to 370, and 370 to 740 MBq (r2=1.0 ± 0.0001, p<0.0001; r2=0.99 ± 0.0001, p<0.0001 for 20 to 370, and 370 to 740, respectively), while did not over 740 MBq (p=0.62). NECR analysis revealed that the peak rate was at 2.9 Mcps, there at the true counts were significantly suppressed. The optimal radioactive concentration was determined as 36 MBq/mL. Conclusion: Simulative analysis for high-dose of 13N using the phantom imitating small LV confirmed that the risk of count-loss was increased. The result can be useful information in assessing the feasibility of MBF quantification in clinical routine.
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Affiliation(s)
- Yoko Kaimoto
- Department of Radiological service, Tokyo Woman's Medical University, Tokyo, Japan
- Department of Health Sciences, Graduate School of Medicine, Tohoku University, Miyagi, Japan
| | - Kenji Fukushima
- Department of Radiology and Nuclear Medicine, Fukushima Medical University, Fukushima, Japan
| | - Kazuko Kanaya
- Department of Radiological service, Tokyo Woman's Medical University, Tokyo, Japan
| | - Masayasu Asanuma
- Department of Radiological service, Tokyo Woman's Medical University, Tokyo, Japan
| | - Kaoru Aoba
- Department of Radiological service, Tokyo Woman's Medical University, Tokyo, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Koichiro Kaneko
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Koichi Chida
- Department of Health Sciences, Graduate School of Medicine, Tohoku University, Miyagi, Japan
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11
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Oba Y, Motokawa R, Kaneko K, Nagai T, Tsuchikawa Y, Shinohara T, Parker JD, Okamoto Y. Neutron resonance absorption imaging of simulated high-level radioactive waste in borosilicate glass. Sci Rep 2023; 13:10071. [PMID: 37344550 DOI: 10.1038/s41598-023-37157-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 06/16/2023] [Indexed: 06/23/2023] Open
Abstract
We performed a preliminary study of neutron resonance absorption imaging to investigate the spatial distribution of constituent elements in borosilicate glasses containing simulated high-level radioactive waste, in which elemental inhomogeneities affect the physical and chemical stabilities of the glass. Dips generated by the resonance absorptions of Rh, Pd, Na, Gd, Cs, and Sm were observed in the neutron transmission spectra of the glass samples. The spatial distributions of these elements were obtained from the neutron transmission images at the resonance energies. The distributions of Rh and Pd visualized the sedimentation of these platinum group elements. In contrast, the lanthanides (Gd and Sm) and Cs were uniformly dispersed. These results show that neutron resonance absorption imaging is a promising tool for characterizing borosilicate glasses and investigating the vitrification mechanism of high-level radioactive waste.
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Affiliation(s)
- Y Oba
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan.
- Department of Mechanical Engineering, Toyohashi University of Technology, Toyohashi, 441-8580, Japan.
| | - R Motokawa
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - K Kaneko
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - T Nagai
- TRP Decommissioning Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1194, Japan
| | - Y Tsuchikawa
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - T Shinohara
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
| | - J D Parker
- Neutron R&D Division, Comprehensive Research Organization for Science and Society (CROSS), Tokai, Ibaraki, 319-1106, Japan
| | - Y Okamoto
- Materials Sciences Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki, 319-1195, Japan
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12
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Kaneko K, Nagao M, Yamamoto A, Sakai A, Sakai S. FDG uptake patterns in isolated and systemic cardiac sarcoidosis. J Nucl Cardiol 2023; 30:1065-1074. [PMID: 36192524 DOI: 10.1007/s12350-022-03106-1] [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: 06/26/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022]
Abstract
AIMS We aimed to investigate the pre-treatment characteristics and treatment responses of isolated and systemic cardiac sarcoidosis (ICS and SCS) from FDG-PET/CT studies and to compare the prognoses of the two groups. METHODS FDG-PET/CT images taken before and after treatment of 31 ICS and 91 SCS patients were analyzed retrospectively. Treatment response and recurrence were determined from the course of FDG-PET/CT. Treatment response and the incidence of both recurrence and major adverse cardiac events (MACE) were assessed in 16 ICS and 35 SCS patients who had been treated for more than 2 years. RESULTS A focal uptake pattern was more often observed than a focal-on-diffuse uptake pattern in both the ICS (74.2%) and SCS (63.7%) groups. Right ventricular involvement was significantly more frequent in SCS than ICS (44.0% vs. 9.6%, p < .001). SUVmax, cardiac metabolic volume (CMV), and cardiac metabolic activity (CMA) were significantly higher in SCS than ICS (SUVmax, 9.1 ± 4.1 vs. 4.8 ± 2.1; CMV, 118.0 ± 111.3 ml vs. 68.3 ± 94.7 ml; CMA, 541.6 ± 578.7 MBq vs. 265.1 ± 396.0 MBq, p < .001). Treatment responses in the two groups were similar, and complete resolution of cardiac uptake after immunosuppressive treatment was obtained in 62.5% of ICS patients and 77.1% of SCS patients (not significantly different). Likewise, no significant difference was found in the incidence of recurrence (40.0% for ICS, 44.4% for SCS) or MACE (25.0% for ICS, 22.8% for SCS). CONCLUSION SCS patients had more active and extensive CS lesions than ICS patients before treatment, but the two groups showed similar treatment responses and prognoses.
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Affiliation(s)
- Koichiro Kaneko
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
- Department of Cardiology, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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13
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Kaneko K, Nagao M, Yamamoto A, Sakai A, Sakai S. Correction: Linking cardiac and extracardiac sarcoidosis and their clinical outcome: 18F-FDG PET/CT analysis in patients with systemic cardiac sarcoidosis. Ann Nucl Med 2023:10.1007/s12149-023-01850-z. [PMID: 37249788 DOI: 10.1007/s12149-023-01850-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Koichiro Kaneko
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan.
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
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14
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Kaneko K, Nagao M, Yamamoto A, Sakai A, Sakai S. Linking cardiac and extracardiac sarcoidosis and their clinical outcome: 18F-FDG PET/CT analysis in patients with systemic cardiac sarcoidosis. Ann Nucl Med 2023:10.1007/s12149-023-01844-x. [PMID: 37119390 DOI: 10.1007/s12149-023-01844-x] [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: 03/07/2023] [Accepted: 04/24/2023] [Indexed: 05/01/2023]
Abstract
OBJECTIVE To clarify the link between cardiac sarcoidosis (CS) and extra-CS (ECS) in systemic CS (SCS) patients in terms of extent and clinical outcome by serial FDG-PET/CT. METHODS Thirty-five SCS patients treated for > 2 years were enrolled in this study. In the overall analysis, patient-based comparisons of the complete resolution (CR) and recurrence rate between CS and ECS lesions were performed. Then, subgroup analyses were performed according to the extent (mono- vs. multi-organ ECS group) and clinical outcome (stable vs. unstable ECS group) of ECS. Pre-treatment cardiac FDG uptake was compared between the mono- and multi-organ ECS groups. The rates of CR, recurrence, and major adverse cardiac events (MACE) were compared between the two groups. RESULTS The CR rate was significantly higher in CS than ECS lesions [77.1% (27/35) vs. 48.5% (17/35), p = 0.01], whereas recurrence rates were similar between CS and ECS [40.7% (11/27) vs. 58.8% (10/17)]. Both the mono- and multi-organ ECS groups showed similar SUVmax, cardiac metabolic volume, and cardiac metabolic activity in the pre-treatment condition. The CR rates were similar between the mono- and multi-organ ECS groups [71.4% (15/21) vs. 85.7% (12/14)], but the recurrence rate was significantly lower in the multi-organ ECS group [60.0% (9/15) vs. 16.7% (2/12), p = 0.02]. The CR [71.4% (5/7) vs. 78.6% (22/28)] and recurrence rates [60.0% (3/5) vs. 36.3% (8/22)] were not significantly different between the stable and unstable ECS groups. The occurrence of MACE was also not significantly different between the mono- and multi-organ ECS groups [19.0% (4/21) vs. 28.6% (4/14)] or between the stable and unstable ECS groups [42.9% (3/7) vs. 17.8% (5/28)]. CONCLUSIONS CS lesions respond to treatment better than ECS lesions, and the extent and clinical outcome of ECS lesion are not linked with those of CS lesions.
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Affiliation(s)
- Koichiro Kaneko
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan.
| | - Michinobu Nagao
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging and Nuclear Medicine, Tokyo Women's Medical University, 8-1, Kawada-Cho, Shinjuku-Ku, Tokyo, 162-8666, Japan
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15
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Kaneko K, Sun Y, Shimizu N, Mizusaki T. Quasi-SU(3) Coupling Induced Oblate-Prolate Shape Phase Transition in the Casten Triangle. Phys Rev Lett 2023; 130:052501. [PMID: 36800453 DOI: 10.1103/physrevlett.130.052501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 11/25/2022] [Accepted: 01/12/2023] [Indexed: 06/18/2023]
Abstract
Shapes and shape evolution in the mass-130 region, including the Te, Xe, and Ba isotopes, have long been a focus of discussion in nuclear physics. This mass region consists of complex many-body systems that can behave in astonishingly simple and regular ways, as classified in the Casten symmetry triangle. By applying the shell model Hamiltonian proposed recently, we carry out calculations using the Hartree-Fock-Bogolyubov plus generator coordinate method, in the large model space containing the (1g_{9/2},1g_{7/2},2d_{5/2},2d_{3/2},3s_{1/2},1h_{11/2},2f_{7/2}) orbits. Based on good reproduction of the experimentally known energy levels, spectroscopic quadrupole moments, and E2 transition probabilities, we identify the quasi-SU(3) couplings across the N=50 and 82 shell gaps, which play a role in driving shape evolution and phase transition discussed in the extended Casten triangle. Specifically, we demonstrate that the quasi-SU(3) coupling mechanism in the proton partner orbits (1g_{9/2}, 2d_{5/2}) tends to drive the system to be more γ soft, and that in the neutron partner orbits (1h_{11/2}, 2f_{7/2}) are responsible for the oblate-to-prolate shape phase transition. With an emphasis on discussing spectroscopic quadrupole moments, our Letter uncovers hidden symmetries from the vast shell-model configurations and adds microscopical insights into the empirical symmetry triangle.
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Affiliation(s)
- K Kaneko
- Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan
| | - Y Sun
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - N Shimizu
- Center for Computational Sciences, University of Tsukuba, 1-1-1, Tennodai Tsukuba, Ibaraki 305-8577, Japan
| | - T Mizusaki
- Institute of Natural Sciences, Senshu University, Tokyo 101-8425, Japan
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16
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Liu JJ, Xu XX, Sun LJ, Yuan CX, Kaneko K, Sun Y, Liang PF, Wu HY, Shi GZ, Lin CJ, Lee J, Wang SM, Qi C, Li JG, Li HH, Xayavong L, Li ZH, Li PJ, Yang YY, Jian H, Gao YF, Fan R, Zha SX, Dai FC, Zhu HF, Li JH, Chang ZF, Qin SL, Zhang ZZ, Cai BS, Chen RF, Wang JS, Wang DX, Wang K, Duan FF, Lam YH, Ma P, Gao ZH, Hu Q, Bai Z, Ma JB, Wang JG, Wu CG, Luo DW, Jiang Y, Liu Y, Hou DS, Li R, Ma NR, Ma WH, Yu GM, Patel D, Jin SY, Wang YF, Yu YC, Hu LY, Wang X, Zang HL, Wang KL, Ding B, Zhao QQ, Yang L, Wen PW, Yang F, Jia HM, Zhang GL, Pan M, Wang XY, Sun HH, Xu HS, Zhou XH, Zhang YH, Hu ZG, Wang M, Liu ML, Ong HJ, Yang WQ. Observation of a Strongly Isospin-Mixed Doublet in ^{26}Si via β-Delayed Two-Proton Decay of ^{26}P. Phys Rev Lett 2022; 129:242502. [PMID: 36563237 DOI: 10.1103/physrevlett.129.242502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 10/10/2022] [Accepted: 11/03/2022] [Indexed: 06/17/2023]
Abstract
β decay of proton-rich nuclei plays an important role in exploring isospin mixing. The β decay of ^{26}P at the proton drip line is studied using double-sided silicon strip detectors operating in conjunction with high-purity germanium detectors. The T=2 isobaric analog state (IAS) at 13 055 keV and two new high-lying states at 13 380 and 11 912 keV in ^{26}Si are unambiguously identified through β-delayed two-proton emission (β2p). Angular correlations of two protons emitted from ^{26}Si excited states populated by ^{26}P β decay are measured, which suggests that the two protons are emitted mainly sequentially. We report the first observation of a strongly isospin-mixed doublet that deexcites mainly via two-proton decay. The isospin mixing matrix element between the ^{26}Si IAS and the nearby 13 380-keV state is determined to be 130(21) keV, and this result represents the strongest mixing, highest excitation energy, and largest level spacing of a doublet ever observed in β-decay experiments.
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Affiliation(s)
- J J Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X X Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Physics, The University of Hong Kong, Hong Kong, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - L J Sun
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - K Kaneko
- Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan
| | - Y Sun
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - P F Liang
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - H Y Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - G Z Shi
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C J Lin
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- College of Physics and Technology & Guangxi Key Laboratory of Nuclear Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - J Lee
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - S M Wang
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
- Shanghai Research Center for Theoretical Nuclear Physics, NSFC and Fudan University, Shanghai 200438, China
| | - C Qi
- KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden
| | - J G Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H H Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Latsamy Xayavong
- Department of Physics, Faculty of Natural Sciences, National University of Laos, Vientiane 01080, Laos
| | - Z H Li
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - P J Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y Y Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H Jian
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y F Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R Fan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S X Zha
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - F C Dai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H F Zhu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J H Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z F Chang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S L Qin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Z Zhang
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - B S Cai
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - R F Chen
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J S Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- College of Science, Huzhou University, Huzhou 313000, China
| | - D X Wang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - K Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - F F Duan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Y H Lam
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - P Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z H Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - Q Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Bai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J B Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J G Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - C G Wu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - D W Luo
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y Jiang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - Y Liu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - D S Hou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - R Li
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - N R Ma
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - W H Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
| | - G M Yu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China
| | - D Patel
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Physics, Sardar Vallabhbhai National Institute of Technology, Surat 395007, India
| | - S Y Jin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y F Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, China
| | - Y C Yu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Physics and Astronomy, Yunnan University, Kunming 650091, China
| | - L Y Hu
- Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin 150001, China
| | - X Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - H L Zang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, China
| | - K L Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - B Ding
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Q Q Zhao
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - L Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - P W Wen
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - F Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H M Jia
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - G L Zhang
- School of Physics, Beihang University, Beijing 100191, China
| | - M Pan
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics, Beihang University, Beijing 100191, China
| | - X Y Wang
- School of Physics, Beihang University, Beijing 100191, China
| | - H H Sun
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H S Xu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Y H Zhang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Z G Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M L Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - H J Ong
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- RCNP, Osaka University, Osaka 567-0047, Japan
| | - W Q Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Isojima S, Yajima N, Yanai R, Miura Y, Fukuma S, Kaneko K, Fujio K, Oku K, Matsushita M, Miyamae T, Wada T, Kaneko Y, Tanaka Y, Nakajima A, Murashima A. POS0734 THE CLINICAL JUDGMENT FOR THE ACCEPTABILITY OF PREGNANCY IN PATIENTS WITH SEROLOGICALLY ACTIVE SLE IN JAPAN: A NATIONWIDE ONLINE SURVEY FROM THE VIGNETTE STUDY. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1397] [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
BackgroundThe risk of pregnancy complications, such as gestational hypertension is high in pregnancies with SLE. In addition, the risk of flare is elevated if pregnancy occurs during the high disease activity. The EULAR recommendation provides a checklist for preconception counseling, in which patients with SLE desiring pregnancy were required the condition that the disease activity prior to pregnancy should be stable for 6-12 months in terms of serological activity (1). However, it does not provide specific criteria for serological activity so that physicians should evaluate the risk of pregnancy in each case by their clinical intuitions.ObjectivesIn order to uncover the present clinical situation for the acceptability of pregnancy in patients with SLE, we performed questionnaire survey to physicians regarding to the degree of serological activity.MethodsThis cross-sectional study was performed to physicians registered with the Japanese College of Rheumatology from December 2020 to January 2021 using the online survey. The questionnaire asked about the characteristics of physicians, facilities and the permission of pregnancies with SLE using vignette scenarios. In this study, data from vignettes of women visiting a regular outpatient clinic were used. The vignettes varied in age (28 or 35 years), duration of stable disease and serological activity. Analysis methods were descriptive statistics, chi-square test. generalized estimating equations (GEE) was performed to investigate the relationship between the determining permission for pregnancy and the scenario patient’s characteristics (age, period of stable disease, titer of anti ds-DNA antibody)ResultsThe questionnaire was distributed to 4946 physicians, and 463 responded. Completion rate (ratio agreed to participate/finished survey) of survey was 91.1%. The median age of physicians was 46 (interquartile range (IQR) 2-10). The specialty was rheumatology (84.9%), other internal medicine (8%), and pediatrics (5.6%). There were no significant differences in patient’s age about the acceptability of pregnancy (coeffficianet -0.02, 95% CI -0.17 -0.01, p=0.42). Case who had been stable for 6 months were more tolerant of pregnancy than case who had been stable for 3 months (coeffficianet 0.12, 95% CI 0.09-0.15, P<0.001) Pregnancy was not allowed in case with mild or high serological activity (mild: coefficient -0.49, 95% CI -0.29- -0.22, p <0.001, high: -0.64, 95% CI -0.65 - -0.61, p <0.001). In contrast, as many as 92 (19.2%) physicians tolerated pregnancy even in the presence of residual high anti ds-DNA antibody titers. Female physicians are significantly more cautious about pregnancy than male when patients have a serologically high activity (12% vs 37.5%, p<0.001). There were no significant differences in specialty status or clinical experience.ConclusionWe found that even mild serological activity alone had a significant negative effect on the physician’s decision to allow pregnancy. We conclude that current physicians make cautious decisions about pregnancies of patients with SLE following the recommendation. On the other hand, an additional investigation should be performed about the results of pregnancies in patients with serological abnormalities, since there are some physicians who thought that pregnancy may be acceptable for patients with only serological abnormalities if the clinical symptoms are stable.References[1]Ann Rheum Dis.2017 Mar;76(3):476-485AcknowledgementsI would like to express my gratitude to the members of Japan College of Rheumatology who cooperated in filling out the questionnaire.Disclosure of InterestsSakiko Isojima: None declared, Nobuyuki Yajima: None declared, Ryo Yanai: None declared, Yoko Miura: None declared, Shingo Fukuma: None declared, Kayoko Kaneko: None declared, Keishi Fujio: None declared, Kenji Oku: None declared, Masakazu Matsushita: None declared, Takako Miyamae: None declared, Takashi Wada: None declared, Yuko Kaneko: None declared, Yoshiya Tanaka Speakers bureau: Y. Tanaka has received speaking fees and/or honoraria from Gilead, Abbvie, Behringer-Ingelheim, Eli Lilly, Mitsubishi-Tanabe, Chugai, Amgen, YL Biologics, Eisai, Astellas, Bristol-Myers, Astra-Zeneca, Grant/research support from: Y. Tanaka has received research grants from Asahi-Kasei, Abbvie, Chugai, Mitsubishi-Tanabe, Eisai, Takeda, Corrona, Daiichi-Sankyo, Kowa, Behringer-Ingelheim, and consultant fee from Eli Lilly, Daiichi-Sankyo, Taisho, Ayumi, Sanofi, GSK, Abbvie., Ayako Nakajima: None declared, ATSUKO MURASHIMA: None declared
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18
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Ishijima M, Nakamura T, Shimizu K, Hayashi K, Kikuchi H, Soen S, Omori G, Yamashita T, Uchio Y, Chiba J, Ideno Y, Kubota M, Kaneko H, Kurosawa H, Kaneko K. Different changes in the biomarker C-terminal telopeptides of type II collagen (CTX-II) following intra-articular injection of high molecular weight hyaluronic acid and oral non-steroidal anti-inflammatory drugs in patients with knee osteoarthritis: a multi-center randomized controlled study. Osteoarthritis Cartilage 2022; 30:852-861. [PMID: 35331859 DOI: 10.1016/j.joca.2022.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 02/28/2022] [Accepted: 03/14/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVES We previously reported, based on a multicenter randomized-control study, that the efficacy of intra-articular injections of hyaluronic acid (IA-HA) was not inferior to that of oral non-steroidal anti-inflammatory drugs (NSAIDs) in patients with knee osteoarthritis (OA). However, the molecular effects on the pathophysiology of knee OA remain unclear. C-terminal telopeptides of type II collagen (CTX-II) is reported to primarily originate from the interface between articular cartilage and subchondral bone, which is a site of potential remodeling in OA. We performed a predefined sub-analysis of the previous study to compare the changes of urinary CTX-II (uCTX-II) in response to IA-HA to those in response to NSAID for knee OA. DESIGN A total of 200 knee OA patients were registered from 20 hospitals and randomized to receive IA-HA (2,700 kDa HA, 5 times at 1-week intervals) or NSAID (loxoprofen sodium, 180 mg/day) for 5 weeks. The uCTX-II levels were measured before and after treatment. RESULTS The uCTX-II levels were significantly increased by IA-HA treatment (337.7 ± 193.8 to 370.7 ± 234.8 ng/μmol Cr) and were significantly reduced by NSAID treatment (423.2 ± 257.6 to 370.3 ± 250.9 ng/μmol Cr). The %changes of uCTX-II induced by IA-HA (11.6 ± 29.5%) and NSAID (-9.0 ± 26.7%) was significantly different (between-group difference: 20.6, 95% confidence intervals: 10.6 to 30.6). CONCLUSIONS While both IA-HA and NSAID improved symptoms of knee OA, uCTX-II levels were increased by IA-HA and reduced by NSAIDs treatment, suggesting these treatments may improve symptoms of knee OA through different modes of action.
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Affiliation(s)
- M Ishijima
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan.
| | - T Nakamura
- Department of Orthopaedic Surgery, University of Occupational and Environmental Health, Fukuoka, Japan.
| | - K Shimizu
- Department of Orthopaedic Surgery, Gifu University, School of Medicine, Gifu, Japan.
| | - K Hayashi
- Department of Laboratory Sciences, School of Health Sciences, Faculty of Medicine, Gunma University, Gunma, Japan.
| | - H Kikuchi
- Department of Orthopaedic Surgery, Kinki University Sakai Hospital, Osaka, Japan.
| | - S Soen
- Department of Orthopaedic Surgery and Rheumatology, Nara Hospital, Kinki University Faculty of Medicine, Ikoma, Japan; Department of Laboratory Sciences, School of Health Sciences, Faculty of Medicine, Gunma University, Gunma, Japan.
| | - G Omori
- Center of Transdisciplinary Research, Institute for Research Promotion, Niigata University, Niigata, Japan.
| | - T Yamashita
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Hokkaido, Japan.
| | - Y Uchio
- Department of Orthopaedic Surgery, Faculty of Medicine, Shimane University School of Medicine, Shimane, Japan.
| | - J Chiba
- Department of Orthopaedic Surgery, Tokyo Women's Medical University, Medical Center East, Tokyo, Japan.
| | - Y Ideno
- Center of Mathematics and Data Sciences, Gunma University, Maebashi, Japan.
| | - M Kubota
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan.
| | - H Kaneko
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan.
| | - H Kurosawa
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan.
| | - K Kaneko
- Department of Medicine for Orthopaedics and Motor Organ, Juntendo University Graduate School of Medicine, Tokyo, Japan.
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Yamamoto A, Nagao M, Ando K, Nakao R, Matsuo Y, Sakai A, Momose M, Kaneko K, Hagiwara N, Sakai S. First Validation of Myocardial Flow Reserve Derived from Dynamic 99mTc-Sestamibi CZT-SPECT Camera Compared with 13N-Ammonia PET. Int Heart J 2022; 63:202-209. [PMID: 35354742 DOI: 10.1536/ihj.21-487] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
13N-ammonia positron emission tomography (NH3-PET) can evaluate myocardial blood flow (MBF) at rest, stress, and myocardial flow reserve (MFR) as well as the ratio of MBF at stress to that at rest. MFR is useful in predicting the prognoses of patients with various heart diseases. Cadmium-zinc-telluride single photon emission computed tomography (CZT-SPECT) enables us to acquire dynamic images of radiotracer kinetics and measure original MBF and MFR using 99mTc-sestamibi. This study aimed to investigate the utility of CZT-SPECT for quantitative assessment of MBF compared to NH3-PET. We validated the correlation of MBF and MFR between CZT-SPECT and NH3-PET. Fourteen patients using one-day rest/stress CZT-SPECT, D-SPECT followed by NH3-PET within 1 month were enrolled and analyzed prospectively. The reproducibility of the MBF and MFR obtained with these two methods was examined using Spearman's correlation coefficient and Bland-Altman plot analysis. The diagnostic value of D-SPECT for abnormal MFR defined using NH3-PET results as MFR < 2.0 was assessed using receiver-operating characteristic (ROC) analysis. The median duration between D-SPECT and NH3-PET was 20 days. Although MBF was overestimated by D-SPECT compared to NH3-PET at high value (mean difference, 0.43 [0.34-0.53]), MBF and MFR were correlated with the two modalities (MBF: r = 0.71, P < 0.0001, MFR: r = 0.60, P < 0.0001). The ROC curve analysis demonstrated a cutoff of 1.6 for detecting abnormal MFR with D-SPECT (sensitivity, 68%; specificity, 91%; AUC, 0.75). MBF and MFR obtained using D-SPECT and NH3-PET had a good correlation, suggesting that the quantitative MFR evaluation by CZT-SPECT may help understand the trend of NH3-PET MFR.
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Affiliation(s)
- Atsushi Yamamoto
- Department of Cardiology, Tokyo Women's Medical University.,Department of Imaging Diagnosis and Nuclear Medicine, Tokyo Women's Medical University
| | - Michinobu Nagao
- Department of Imaging Diagnosis and Nuclear Medicine, Tokyo Women's Medical University
| | - Kiyoe Ando
- Department of Cardiology, Tokyo Women's Medical University
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University
| | - Yuka Matsuo
- Department of Imaging Diagnosis and Nuclear Medicine, Tokyo Women's Medical University
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University
| | - Mitsuru Momose
- Department of Imaging Diagnosis and Nuclear Medicine, Tokyo Women's Medical University
| | - Koichiro Kaneko
- Department of Imaging Diagnosis and Nuclear Medicine, Tokyo Women's Medical University
| | | | - Shuji Sakai
- Department of Imaging Diagnosis and Nuclear Medicine, Tokyo Women's Medical University
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20
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Kawakubo M, Nagao M, Yamamoto A, Nakao R, Matsuo Y, Kaneko K, Watanabe E, Sakai A, Sasaki M, Sakai S. 13 N-ammonia PET-derived right ventricular longitudinal strain and myocardial flow reserve in right coronary artery disease. Eur J Nucl Med Mol Imaging 2021; 49:1870-1880. [PMID: 34897553 DOI: 10.1007/s00259-021-05647-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/03/2021] [Indexed: 11/25/2022]
Abstract
PURPOSE We developed a feature-tracking algorithm for use with electrocardiography-gated high-resolution 13 N-ammonia positron emission tomography (PET) imaging, and we hypothesized it could be used to clarify the association between right ventricular (RV) longitudinal strain (LS) and right coronary artery (RCA) ischemia. The aim of this study was to investigate the association between the reduction of regional myocardial flow reserve (MFR) in RCA territories and PET-derived LS of the RV free wall. METHODS Ninety-three patients with coronary artery stenosis > 50%, diagnosed by coronary computed tomography angiography, and 10 controls were retrospectively analyzed. RV-LS in the free wall was measured by a feature-tracking technique on the resting and stressed 13 N-ammonia PET images of horizontal long axis slices. The patients were sub-grouped according to regional MFR values at the territories of RCA, left anterior descending artery (LAD), and left circumflex coronary artery (LCx): RCA-MFR < 2.0 [n = 34], RCA-MFR ≥ 2.0 but MFR < 2.0 at LAD or LCx territories [n = 11], and MFR ≥ 2.0 for all territories [n = 48]. Stress and resting RV-LS were compared in each of the four groups. Multiple comparisons of RV-LS among the four groups were performed in the stress and resting state. RESULTS Decreased stress RV-LS in patients with an RCA-MFR < 2.0 was observed. In the patients with MFR ≥ 2.0 for all territories, the stressed RV-LS was significantly increased compared to that in the resting state. Significantly decreased RV free wall LS during adenosine stress in patients with RCA-MFR < 2.0 was observed in the other three groups. CONCLUSIONS We measured RV myocardial LS using feature tracking in cine imaging of 13 N-ammonia PET. The results of this study suggest that PET-derived stressed RV-LS is useful for detecting reduced RV myocardial motion due to ischemia in the RCA territory.
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Affiliation(s)
- Masateru Kawakubo
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuka Matsuo
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Koichiro Kaneko
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Akiko Sakai
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Masayuki Sasaki
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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21
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Kawakubo M, Nagao M, Kikuchi N, Yamamoto A, Nakao R, Matsuo Y, Kaneko K, Watanabe E, Sasaki M, Nunoda S, Sakai S. 13N-ammonia positron emission tomography-derived left-ventricular strain in patients after heart transplantation validated using cardiovascular magnetic resonance feature tracking as reference. Ann Nucl Med 2021; 36:70-81. [PMID: 34643890 DOI: 10.1007/s12149-021-01686-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 10/06/2021] [Indexed: 12/01/2022]
Abstract
OBJECTIVE Heart transplant rejection leads to cardiac allograft vasculopathy (CAV). 13N-ammonia positron emission tomography (PET) can be useful in detecting CAV, as it can evaluate both epicardial vessels and microvasculature. In this study, we evaluated the regional wall motion in heart transplant patients using our PET-specific feature-tracking (FT) algorithm for myocardial strain calculation and validated it using a cardiovascular magnetic resonance (CMR) FT strain as a reference. METHODS A total of 15 heart transplant patients who underwent both 13N-ammonia PET and CMR within 3 months were retrospectively enrolled. The same slice position of short-axis cine images of the middle slice of left ventricle (LV) and the same slice position of horizontal long-axis cine images were selected for the two modalities to measure the circumferential strain (CS) and longitudinal strain (LS), respectively. Based on the FT technique, time-strain curves were calculated by semi-automatic tracking of the endocardial contour on cine images throughout a cardiac cycle. The peak value in the time-strain curve was defined as the representative value. Correlations of CS and LS between PET and CMR were analyzed using Pearson correlation coefficients. The inter-modality error of strain measurements was evaluated using intraclass correlation coefficients (ICCs) with two-way random single measures. RESULTS Excellent correlations of CS and LS between PET and CMR were observed (CS: r = 0.80; p < 0.01; LS: r = 0.87; p < 0.01). Excellent ICCs were observed (0.89 and 0.85) in CS and LS derived from PET. CONCLUSIONS We propose the first PET strain showing an excellent agreement with the CMR strain and high reproducibility in measurement.
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Affiliation(s)
- Masateru Kawakubo
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Michinobu Nagao
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
| | - Noriko Kikuchi
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Atsushi Yamamoto
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Risako Nakao
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuka Matsuo
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Koichiro Kaneko
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
| | - Eri Watanabe
- Department of Cardiology, Tokyo Women's Medical University, Tokyo, Japan
| | - Masayuki Sasaki
- Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinichi Nunoda
- Department of Therapeutic Strategy for Severe Heart Failure, Graduate School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Shuji Sakai
- Department of Diagnostic Imaging & Nuclear Medicine, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan
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22
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Krez A, Lane J, Heilbronner A, Park-Min KH, Kaneko K, Pannellini T, Mintz D, Hansen D, McMahon DJ, Kirou KA, Roboz G, Desai P, Bockman RS, Stein EM. Risk factors for multi-joint disease in patients with glucocorticoid-induced osteonecrosis. Osteoporos Int 2021; 32:2095-2103. [PMID: 33877383 PMCID: PMC8056829 DOI: 10.1007/s00198-021-05947-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Accepted: 04/01/2021] [Indexed: 12/24/2022]
Abstract
UNLABELLED This study investigated risk factors for osteonecrosis involving multiple joints (MJON) among glucocorticoid-treated patients. The best predictor of MJON was cumulative oral glucocorticoid dose. Risk of MJON was 12-fold higher in patients who had a second risk factor for osteonecrosis. Further research is needed into strategies for prevention of MJON. INTRODUCTION Osteonecrosis (ON) is a debilitating musculoskeletal condition in which bone cell death can lead to mechanical failure. When multiple joints are affected, pain and disability are compounded. Glucocorticoid treatment is one of the most common predisposing factors for ON. This study investigated risk factors for ON involving multiple joints (MJON) among glucocorticoid-treated patients. METHODS Fifty-five adults with glucocorticoid-induced ON were prospectively enrolled. MJON was defined as ON in ≥ three joints. Route, dose, duration, and timing of glucocorticoid treatment were assessed. RESULTS Mean age of enrolled subjects was 44 years, 58% were women. Half had underlying conditions associated with increased ON risk: systemic lupus erythematosus (29%), acute lymphoblastic leukemia (11%), HIV (9%), and alcohol use (4%). Mean daily oral dose of glucocorticoids was 29 mg. Average cumulative oral dose was 30 g over 5 years. The best predictor of MJON was cumulative oral glucocorticoid dose. For each increase of 1,000 mg, risk of MJON increased by 3.2% (95% CI 1.03, 1.67). Glucocorticoid exposure in the first 6 months of therapy, peak dose (oral or IV), and mean daily dose did not independently increase risk of MJON. The risk of MJON was 12-fold in patients who had a second risk factor (95% CI 3.2, 44.4). CONCLUSIONS Among patients with glucocorticoid-induced ON, cumulative oral dose was the best predictor of multi-joint disease; initial doses of IV and oral glucocorticoids did not independently increase risk. Further research is needed to better define optimal strategies for prevention and treatment of MJON.
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Affiliation(s)
- A Krez
- Endocrinology Service, Hospital for Special Surgery, 535 East 70th Street, New York, NY, USA
- Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY, 10021, USA
| | - J Lane
- Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY, 10021, USA
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - A Heilbronner
- Endocrinology Service, Hospital for Special Surgery, 535 East 70th Street, New York, NY, USA
- Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY, 10021, USA
| | - K-H Park-Min
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomic Research Center, Hospital for Special Surgery, New York, NY, USA
| | - K Kaneko
- Arthritis and Tissue Degeneration Program, David Z. Rosensweig Genomic Research Center, Hospital for Special Surgery, New York, NY, USA
| | - T Pannellini
- Research Division, Hospital for Special Surgery, New York, NY, USA
| | - D Mintz
- Department of Radiology and Imaging, Hospital for Special Surgery, New York, NY, USA
| | - D Hansen
- Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY, 10021, USA
- Department of Orthopedic Surgery, Hospital for Special Surgery, New York, NY, USA
| | - D J McMahon
- Endocrinology Service, Hospital for Special Surgery, 535 East 70th Street, New York, NY, USA
- Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY, 10021, USA
| | - K A Kirou
- Division of Rheumatology, Hospital for Special Surgery, New York, NY, USA
| | - G Roboz
- Department of Hematology and Oncology, Weill Cornell Medical Center, New York, NY, USA
| | - P Desai
- Department of Hematology and Oncology, Weill Cornell Medical Center, New York, NY, USA
| | - R S Bockman
- Endocrinology Service, Hospital for Special Surgery, 535 East 70th Street, New York, NY, USA
- Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY, 10021, USA
| | - E M Stein
- Endocrinology Service, Hospital for Special Surgery, 535 East 70th Street, New York, NY, USA.
- Metabolic Bone Disease Service, Hospital for Special Surgery, New York, NY, 10021, USA.
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Takayanagi F, Fukuuchi T, Yamaoka N, Kaneko K. Measurement of the total purine contents and free nucleosides, nucleotides, and purine bases composition in Japanese anchovies ( Engraulis japonicus) using high-performance liquid chromatography with UV detection. Nucleosides Nucleotides Nucleic Acids 2021; 39:1458-1464. [PMID: 33231138 DOI: 10.1080/15257770.2020.1809674] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Dietary purine restrictions are recommended for patients with hyperuricemia and gout. While measuring the purine contents of various foods in our laboratory using high-performance liquid chromatography (HPLC), we observed and reported changes in purine composition. In this study, we measured the total purine content and free purine of raw anchovies as well as after fermentation, using two methods by HPLC. Method 1 involved acid hydrolysis of all purines, such as nucleic acids and nucleotides, to form four corresponding purine bases. Method 2, which is a non-hydrolysis method, is used to measure the amount of free purines (nucleotide, nucleoside, purine base). As a result of method 1, after fermentation, adenine-related and hypoxanthine-related purines and the total purine levels decreased significantly. Regardless of being raw or fermented, each anchovy contained mainly hypoxanthine- and guanine-related purines. Among the hypoxanthine-related purines, the results of method 2 revealed that the raw anchovies contained a lot of inosine monophosphate (IMP), while after fermentation contained more inosine. In guanine-related and adenine-related purines, those nucleotides decreased by fermentation and nucleosides and bases increased. Measurements of free purines revealed that those reductions after fermentation observed in method 1 were derived from decreased nucleotides. These results indicate that purines are affected by the fermentation bacteria and period.
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Affiliation(s)
- F Takayanagi
- Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - T Fukuuchi
- Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - N Yamaoka
- Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
| | - K Kaneko
- Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science, Teikyo University, Tokyo, Japan
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24
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Lee J, Xu XX, Kaneko K, Sun Y, Lin CJ, Sun LJ, Liang PF, Li ZH, Li J, Wu HY, Fang DQ, Wang JS, Yang YY, Yuan CX, Lam YH, Wang YT, Wang K, Wang JG, Ma JB, Liu JJ, Li PJ, Zhao QQ, Yang L, Ma NR, Wang DX, Zhong FP, Zhong SH, Yang F, Jia HM, Wen PW, Pan M, Zang HL, Wang X, Wu CG, Luo DW, Wang HW, Li C, Shi CZ, Nie MW, Li XF, Li H, Ma P, Hu Q, Shi GZ, Jin SL, Huang MR, Bai Z, Zhou YJ, Ma WH, Duan FF, Jin SY, Gao QR, Zhou XH, Hu ZG, Wang M, Liu ML, Chen RF, Ma XW. Large Isospin Asymmetry in ^{22}Si/^{22}O Mirror Gamow-Teller Transitions Reveals the Halo Structure of ^{22}Al. Phys Rev Lett 2020; 125:192503. [PMID: 33216609 DOI: 10.1103/physrevlett.125.192503] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/26/2020] [Accepted: 09/14/2020] [Indexed: 06/11/2023]
Abstract
β-delayed one-proton emissions of ^{22}Si, the lightest nucleus with an isospin projection T_{z}=-3, are studied with a silicon array surrounded by high-purity germanium detectors. Properties of β-decay branches and the reduced transition probabilities for the transitions to the low-lying states of ^{22}Al are determined. Compared to the mirror β decay of ^{22}O, the largest value of mirror asymmetry in low-lying states by far, with δ=209(96), is found in the transition to the first 1^{+} excited state. Shell-model calculation with isospin-nonconserving forces, including the T=1, J=2, 3 interaction related to the s_{1/2} orbit that introduces explicitly the isospin-symmetry breaking force and describes the loosely bound nature of the wave functions of the s_{1/2} orbit, can reproduce the observed data well and consistently explain the observation that a large δ value occurs for the first but not for the second 1^{+} excited state of ^{22}Al. Our results, while supporting the proton-halo structure in ^{22}Al, might provide another means to identify halo nuclei.
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Affiliation(s)
- J Lee
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - X X Xu
- Department of Physics, The University of Hong Kong, Hong Kong, China
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - K Kaneko
- Department of Physics, Kyushu Sangyo University, Fukuoka 813-8503, Japan
| | - Y Sun
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
| | - C J Lin
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- College of Physics and Technology, Guangxi Normal University, Guilin 541004, China
| | - L J Sun
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - P F Liang
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - Z H Li
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - J Li
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - H Y Wu
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - D Q Fang
- Key Laboratory of Nuclear Physics and Ion-Beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - J S Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Science, Huzhou University, Huzhou 313000, China
| | - Y Y Yang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai 519082, China
| | - Y H Lam
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y T Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- Institute of Particle and Nuclear Physics, Henan Normal University, Xinxiang, 453007, China
| | - K Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - J G Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J B Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - J J Liu
- Department of Physics, The University of Hong Kong, Hong Kong, China
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - P J Li
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - Q Q Zhao
- Department of Physics, The University of Hong Kong, Hong Kong, China
| | - L Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - N R Ma
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - D X Wang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - F P Zhong
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - S H Zhong
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - F Yang
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - H M Jia
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - P W Wen
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
| | - M Pan
- Department of Nuclear Physics, China Institute of Atomic Energy, Beijing 102413, China
- School of Physics and Nuclear Energy Engineering, Beihang University, Beijing 100191, China
| | - H L Zang
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - X Wang
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - C G Wu
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - D W Luo
- School of Physic and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - H W Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - C Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - C Z Shi
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - M W Nie
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - X F Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - H Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
| | - P Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Q Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - G Z Shi
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - S L Jin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - M R Huang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Z Bai
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Y J Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - W H Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - F F Duan
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
| | - S Y Jin
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Q R Gao
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - X H Zhou
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - Z G Hu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M Wang
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- Advanced Energy Science and Technology Guangdong Laboratory, Huizhou 516003, China
| | - M L Liu
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - R F Chen
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - X W Ma
- CAS Key Laboratory of High Precision Nuclear Spectroscopy, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
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Watanabe T, Abe K, Ishikawa M, Ishikawa T, Imakiire S, Ohtsubo T, Kaneko K, Fukuuchi T, Tsutsui H. Hyperuricemia impaired nitric oxide bioavailablity and deteriorated pulmonary arterial hypertension via a uric acid transporter, URATv1 in xanthine oxidoreductase (XOR)-independent manner. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3804] [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
Background
Hyperuricemia occurs in approximately 80% in patients with pulmonary arterial hypertension (PAH) and is positively correlated with pulmonary arterial pressure (PAP). It has been reported that uric acid (UA) reduced endothelium derived nitric oxide (NO) production in porcine pulmonary arterial endothelial cells (PAEC). However, the effects of UA and xanthine oxidoreductase (XOR), catalytic enzyme of UA, on the development of PAH have not been fully elucidated.
Purpose
We examined the followings; (1) the effects of hyperuricemia on the endothelial function and the development of PAH in rats (2) the therapeutic effects of UA transporter inhibitor on PAH in rats, and (3) the role of XOR in PAH in mice.
Methods
We used normal and 5-wk Sugen5416/Hypoxia/Normoxia-exposed (SU/Hx/Nx) rats. Gene expression levels of URATv1, a UA transporter, were measured by RT-PCR. We determined the isometric tension of PA rings isolated from normal rats. The study with the isolated perfused lung preparation was performed in SU/HX/Nx rats. To investigate the chronic effect of UA on the development of PAH, hyperuricemia was induced by the administration of 2% oxonic acid (OA) in diet for 6-wk. Benzbromarone (BBR, 10mg/kg/day, diet, from weeks 0 to 5), a URATv1 transporter inhibitor, was administered in the SU/Hx/Nx-rats with or without 2%OA. To examine the role of XOR in PAH, XOR+/− and wild type (WT) mice were exposed to 3-wk Nx or Hx (10% O2).
Results
The mRNA of URATv1 was detected in the normal lungs. Isometric tension study showed that UA (8 mg/dl) inhibited acetylcholine-induced vasorelaxation. In perfused lung preparations, UA acutely increased estimated PVR in a dose-dependent manner (1.6–16.0mg/dl) with reducing cGMP levels in the lungs. BBR significantly attenuated the pressor response to UA. UA levels in the plasma and the lung tissues were significantly elevated in SU/Hx/Nx-rats with 2%OA (normal vs. vehicle vs. 2%OA, plasma: 0.24±0.01 vs. 0.80±0.14 and 1.44±0.17 mg/dl; lung tissues: 68±3 vs. 142±3 and 377±46 pmol/g tissue). They exhibited further elevation of right ventricle systolic pressure (RVSP) (31±2 vs. 72±6 vs. 101±3 mmHg) and Ea (a marker of RV afterload) (0.24±0.04 vs. 0.97±0.15 vs. 2.36±0.49 mmHg/μL) with the exacerbation of occlusive lesions of PAs. BBR had no changes in the UA levels in the plasma (1.93±0.30 mg/dL), but significantly reduced the UA levels in the lung tissues (101±10 pmol/g tissue) and attenuated the increase in RVSP (53±8mmHg) and Ea (0.21±0.05 mmHg/mL) in the SU/Hx/Nx-rats with 2%OA. On the other hand, BBR had no effects on RVSP (76±7 mmHg) and Ea (0.91±0.15 mmHg/mL) in the SU/Hx/Nx-rats without 2%OA. There were no significant differences in RVSP between XOR+/− mice with Hx and WT with Hx (26±2 vs. 26±2 mmHg).
Conclusions
Hyperuricemia itself impairs endothelial function and deteriorates PAH via URATv1 in a XOR-independent manner. UA can be a novel therapeutic target for PAH.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- T Watanabe
- Kyushu University Hospital, Fukuoka, Japan
| | - K Abe
- Kyushu University Hospital, Fukuoka, Japan
| | - M Ishikawa
- Fukuoka Children's Hospital, Fukuoka, Japan
| | - T Ishikawa
- Kyushu University Hospital, Fukuoka, Japan
| | - S Imakiire
- Kyushu University Hospital, Fukuoka, Japan
| | - T Ohtsubo
- Fukuoka Red Cross Hospital, Fukuoka, Japan
| | - K Kaneko
- Teikyo University, Faculty of Pharma-Science, Tokyo, Japan
| | - T Fukuuchi
- Teikyo University, Faculty of Pharma-Science, Tokyo, Japan
| | - H Tsutsui
- Kyushu University Hospital, Fukuoka, Japan
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Yamada N, Saito C, Kano H, Fukuuchi T, Yamaoka N, Kaneko K, Asami Y. Lactobacillus gasseri PA-3 directly incorporates purine mononucleotides and utilizes them for growth. Nucleosides Nucleotides Nucleic Acids 2020; 41:221-230. [PMID: 32954967 DOI: 10.1080/15257770.2020.1815768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Lactococcus lactis has been reported unable to directly incorporate mononucleotides but instead requires their external dephosphorylation by nucleotidases to the corresponding nucleosides prior to their incorporation. Although Lactobacillus gasseri PA-3 (PA-3), a strain of lactic acid bacteria, has been found to incorporate purine mononucleotides such as adenosine 5'-monophosphate (AMP), it remains unclear whether these bacteria directly incorporate these mononucleotides or incorporate them after dephosphorylation to the corresponding nucleosides. This study evaluated whether PA-3 incorporated radioactively-labeled mononucleotides in the presence or absence of the 5'-nucleotidase inhibitor α,β-methylene ADP (APCP). PA-3 took up 14C-AMP in the presence of APCP, as well as incorporating 32P-AMP. Furthermore, radioactivity was detected in the RNA/DNA of bacterial cells cultured in the presence of 32P-AMP. Taken together, these findings indicated that PA-3 incorporated purine mononucleotides directly rather than after their dephosphorylation to purine nucleosides and that PA-3 utilizes these purine mononucleotides in the synthesis of RNA and DNA. Although additional studies are required to identify purine mononucleotide transporters in PA-3, this study is the first to show that some lactic acid bacteria directly incorporate purine mononucleotides and use them for growth.
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Affiliation(s)
- N Yamada
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan.,Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - C Saito
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan.,Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - H Kano
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan.,Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - T Fukuuchi
- Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - N Yamaoka
- Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - K Kaneko
- Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - Y Asami
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan
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Yotsumoto D, Osako T, Matsuura M, Takayama S, Kaneko K, Takahashi M, Shimazu K, Yoshidome K, Kuraoka K, Itakura M, Tani M, Ishikawa T, Ohi Y, Kinoshita T, Sato N, Tsujimoto M, Tsuda H, Nakamura S, Noguchi S, Akiyama F. 180P Development of prognosis prediction model using cytokeratin 19 mRNA copy number of sentinel lymph node metastasis in breast cancer: A multicenter study in Japan. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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28
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Kawazoe M, Kaneko K, Nanki T. FRI0368 GLUCOCORTICOID THERAPY MIGHT SUPPRESS WNT SIGNALING BY REDUCING THE RATIO OF SERUM WNT3A TO WNT INHIBITORS, SFRP-1 AND WIF-1, AND IMPAIR BONE FORMATION. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2531] [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:Glucocorticoids decrease bone density by multiple mechanisms, including suppression of bone formationviaWnt/β-catenin signaling. Binding of Wnt ligands to a specific receptor and its co-receptors is required for activation of the Wnt pathway, whereas this pathway is inactivated by some negative regulators of Wnt signaling. Sclerostin (Scl) and Dickkopf-1 (Dkk-1) bind to Wnt co-receptors, and secreted Frizzled-related protein 1 (sFRP-1) and Wnt inhibitory factor 1 (Wif-1) bind to Wnt ligand, thereby inactivating the Wnt pathway [1-4]. However, the detailed changes of Wnt signaling in patients with glucocorticoid-induced osteoporosis have not been clarified.Objectives:We measured serum levels of Scl, Dkk-1 and Wnt3a before and after starting glucocorticoid therapy in our previous study, and the results suggested that suppression of Wnt/β-catenin signaling by increasing serum Scl and Dkk-1 might impaired bone formation at least in the first week of the initiation of glucocorticoid therapy [5]. However, the involvement of Wnt signaling in subsequent suppression of bone formation was unclear. The objective of this study was to investigate the involvement of the Wnt/β-catenin signaling pathway and its clinical significance after the early phase of glucocorticoid therapy in glucocorticoid-induced osteoporosis.Methods:A total of 53 patients with systemic autoimmune diseases who received initial glucocorticoid therapy with prednisolone (30-60 mg daily) were prospectively enrolled. We measured serum levels of sFRP-1, Wif-1 and Wnt3a before starting glucocorticoid therapy and every week for four weeks after its initiation. Patients underwent measurement of bone mineral density (BMD) of the lumbar spine (L2-4) by dual-energy X-ray absorptiometry before starting therapy and after 16.3 ± 1.4 months (the mean ± SEM).Results:Serum sFRP-1 and Wif-1 level tended to decrease compared to before therapy from the first week. Serum level of Wnt3a also decreased from the first week. Both the ratio of Wnt3a to sFRP-1 and the ratio of Wnt3a to Wif-1 decreased from the first week onward. Moreover, we stratified the subjects into two groups according to the baseline serum sFRP-1 level at median and found that the decrease of BMD after initiation of glucocorticoid therapy in the High sFRP-1 group was larger than that in the Low sFRP-1 group. There was no difference in BMD changes between High Wif-1 and Low Wif-1 group, when stratified into two groups according to the median baseline serum Wif-1 level.Conclusion:Our previous study indicated that increase of Scl and Dkk-1 could inhibit Wnt signaling pathway in the early phase of glucocorticoid therapy. Current study suggested that the reduction in the ratio of Wnt3a to Wnt inhibitors, sFRP-1 and Wif-1, would suppress Wnt signaling, which might result in impairment of bone formation subsequent. Taken together, bone formation was impaired via suppressing Wnt signaling in patients treated with glucocorticoid. Furthermore, higher serum sFRP-1 level before glucocorticoid administration might be a predictor of future severity of glucocorticoid-induced osteoporosis.References:[1]Canalis E, et al. Osteoporos Int 2007; 18: 1319-1328.[2]Ke HZ, et al. Endocr Rev 2012; 33: 747-783.[3]Bodine PV, et al. J Cell Biochem 2005; 96: 1212-30.[4]Surmann-Schmitt C, et al. J Cell Sci 2009; 122: 3627-37.[5]Kawazoe M, et al. Clin Rheumatol 2018; 37: 2169-2178.[6]Wang FS, et al. Endocrinology 2005; 146: 2415-23.Disclosure of Interests:Mai Kawazoe: None declared, Kaichi Kaneko: None declared, Toshihiro Nanki Grant/research support from: Chugai Pharmaceutical Co., Eisai Co., Ltd., Teijin Pharma Ltd., Eli Lilly Japan K.K., Bristol-Myers K.K., Ono Pharmaceutical Co., Ltd., Novartis Pharma K.K., Asahikasei Pharma Corp., Mitsubishi-Tanabe Pharma Co., Astellas Pharma Inc., Ayumi Pharmaceutical Co., Pfizer Japan Inc., Daiichi Sankyo Co., Ltd., Shionogi & Co., Ltd., Sanofi K.K., Nippon Kayaku Co., Ltd., Yutoku Pharmaceutical Ind. Co., Ltd., UCB Japan Co. Ltd., Nihon Pharmaceutical Co., Ltd., and Bayer Yakuhin, Ltd., Consultant of: UCB Japan Co., Ltd., Eisai Co., Ltd., and Chugai Pharmaceutical Co., Speakers bureau: Mitsubishi-Tanabe Pharma Co., Chugai Pharmaceutical Co., Eisai Co., Ltd., Astellas Pharma Inc., Janssen Pharmaceutical K.K., Ayumi Pharmaceutical Co., Pfizer Japan Inc., Asahikasei Pharma Corp., Sanofi K.K., Novartis Pharma K.K., Eli Lilly Japan K.K., Nippon Kayaku Co., Ltd., Teijin Pharma Ltd., Takeda Pharmaceutical Co., Nippon Boehringer Ingelheim Co., Ltd., and AbbVie GK.
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Kano H, Saito C, Yamada N, Fukuuchi T, Yamaoka N, Kaneko K, Asami Y. Species-dependent patterns of incorporation of purine mononucleotides and nucleosides by lactic acid bacteria. Nucleosides Nucleotides Nucleic Acids 2020; 39:1440-1448. [PMID: 32397874 DOI: 10.1080/15257770.2020.1733604] [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] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Although most lactic acid bacteria do not directly incorporate purine nucleotides, the strain Lactobacillus gasseri PA-3 was found to incorporate purine mononucleotides. To determine whether the direct uptake of purine mononucleotides is dependent on the species or strain of lactic acid bacteria, incorporation of purine mononucleotides was assessed in L. gasseri, Lactcoccus lactis sbsp. lactis, Streptococcus thermophilus and other species of lactic acid bacteria. Each bacterial strain was incubated with 32P-AMP or 14C-adenosine and the incorporation of each purine was evaluated by measuring their radioactivity. All investigated strains of L. gasseri incorporated 32P-AMP, whereas strains of S. thermophilus and most strains of L. lactis did not. Incorporation of 32P-AMP into strains of Pediococcus was dependent on the strain or species of that genus of bacteria. All investigated strains, except for one strain of L. gasseri, incorporated 14C-adenosine, with S. thermophilus, L. lactis and Pediococcus generally displaying greater incorporation of 14C-adenosine than L. gasseri. Although most lactic acid bacteria such as S. thermophiles and L. lactis do not incorporate purine mononucleotides, some species such as L. gasseri directly incorporate purine mononucleotides. These findings indicate that the preferential incorporation of purine mononucleotides or nucleosides by lactic acid bacteria is dependent on the species or strain.
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Affiliation(s)
- H Kano
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan
| | - C Saito
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan
| | - N Yamada
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan
| | - T Fukuuchi
- Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - N Yamaoka
- Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - K Kaneko
- Faculty of Pharma Sciences, Teikyo University, Tokyo, Japan
| | - Y Asami
- Food Microbiology Research Laboratories, R&D Division, Meiji Co., Ltd, Tokyo, Japan
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Uchiyama A, Nagatomo T, Higurashi Y, Ohnishi J, Komiyama M, Kumagai K, Fujimaki M, Yamauchi H, Tamura M, Kaneko K, Fukunishi N, Nakagawa T. Control system for the new RIKEN 28-GHz superconducting electron cyclotron resonance ion source for SRILAC. Rev Sci Instrum 2020; 91:025101. [PMID: 32113460 DOI: 10.1063/1.5129632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Accepted: 01/11/2020] [Indexed: 06/10/2023]
Abstract
A new RIKEN 28-GHz superconducting electron cyclotron resonance ion source (SC-ECRIS) has been installed for the superconducting RIKEN linear accelerator (SRILAC). The new SC-ECRIS control system mainly consists of programmable logic controllers (PLCs) embedded with the Experimental Physics and Industrial Control System. To improve the reliability as compared with previous control systems, two types of PLC central processing units, sequential and Linux, have been installed in the same unit. Past experience has shown that new types of designs that can rapidly respond to system scalability are key. By connecting PLC stations using star-topology field buses, their rapid and cost-effective response to system changes is realized for the new devices. Furthermore, a unique data acquisition system employing a 920-MHz-band radio was developed to measure analog data such as the temperature at the high-voltage stage.
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Affiliation(s)
- A Uchiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nagatomo
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Higurashi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Ohnishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Komiyama
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - K Kumagai
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Fujimaki
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Yamauchi
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - M Tamura
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - K Kaneko
- SHI Accelerator Service, Ltd., 1-17-6 Osaki, Shinagawa, Tokyo 141-0032, Japan
| | - N Fukunishi
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Nakagawa
- Nishina Center for Accelerator Based Science, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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Suehara Y, Sasa K, Okubo T, Hayashi T, Sano K, Kurihara T, Akaike K, Ishii M, Kim Y, Kaneko K, Saito T. Comparative analysis of protein profiles of prognosis-associated proteins and KIT-related proteins in gastrointestinal stromal tumour. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz433.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yamamoto Y, Ichihara S, Suzuki M, Hara A, Hidalgo Díaz JJ, Maruyama Y, Kaneko K. Treatment of finger phalangeal fractures using the Ichi-Fixator system: A prospective study of 12 cases. Hand Surg Rehabil 2019; 38:302-306. [PMID: 31398489 DOI: 10.1016/j.hansur.2019.07.011] [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] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Revised: 07/06/2019] [Accepted: 07/30/2019] [Indexed: 10/26/2022]
Abstract
External fixators are an effective treatment option for comminuted or unstable phalangeal fractures. We developed a new linked-wire type of external fixator (the Ichi-Fixator) for finger phalangeal fractures, which enables fine adjustment of the fixation under fluoroscopy guidance either in a static way or with distraction through small screws inside the fixator. This technique was designed to improve on the stability and rigidity of conventional percutaneous Kirchner wire fixation. We assessed the effectiveness of the fixator through 12 cases of open or percutaneous fixation in comminuted or unstable phalangeal fractures. All patients were examined for postoperative complications, functional recovery, pain on visual analog scale (VAS), and the Quick Disabilities of the Arm, Shoulder, and Hand (QuickDASH) score at the final follow-up visit. Patients could perform all routine activities with normal grip strength and a full range of hand motion without pain after treatment. This treatment, which reduces the postoperative discomfort and may allow an immediate return to work, will clearly boost patient satisfaction. Linked-wire type external fixation enhances the security of fixation, facilitates postoperative mobilization, and may allow an immediate return to work.
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Affiliation(s)
- Y Yamamoto
- Department of Orthopedic Surgery, Juntendo University, Tokyo, Japan
| | - S Ichihara
- Hand Surgery Center, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba 279-0021, Japan.
| | - M Suzuki
- Hand Surgery Center, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba 279-0021, Japan
| | - A Hara
- Hand Surgery Center, Juntendo University Urayasu Hospital, 2-1-1 Tomioka, Urayasu, Chiba 279-0021, Japan
| | - J J Hidalgo Díaz
- Hand Surgery Center, Hôpitaux Universitaires de Strasbourg, Strasbourg 67098, France
| | - Y Maruyama
- Department of Orthopedic Surgery, Juntendo University Urayasu Hospital, Chiba, Japan
| | - K Kaneko
- Department of Orthopedic Surgery, Juntendo University, Tokyo, Japan
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Shikano K, Kaneko K, Kaburaki K, Isobe K, Kawabe K, Homma S, Kawai S, Nanki T. Nivolumab-induced anti-aminoacyl-tRNA synthetase antibody-positive polymyositis complicated by interstitial pneumonia in a patient with lung adenocarcinoma. Scand J Rheumatol 2019; 49:82-83. [PMID: 31135242 DOI: 10.1080/03009742.2019.1596309] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- K Shikano
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - K Kaneko
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - K Kaburaki
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - K Isobe
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - K Kawabe
- Division of Neurology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - S Homma
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - S Kawai
- Department of Inflammation and Pain Control Research, Toho University School of Medicine, Tokyo, Japan
| | - T Nanki
- Division of Rheumatology, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
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Kaneko K, Kawai T, Watanabe N, Wada Y, Onodera M, Murashima A. Spontaneous recovery from suppressed B cell production and proliferation caused by intrauterine azathioprine exposure in the fetal period. Lupus 2019; 28:1027-1028. [PMID: 31126211 DOI: 10.1177/0961203319851862] [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: 11/16/2022]
Affiliation(s)
- K Kaneko
- 1 Division of Maternal Medicine, Center for Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - T Kawai
- 2 Department of Immunology, National Center for Child Health and Development, Tokyo, Japan
| | - N Watanabe
- 3 Department of Human Genetics, National Research Institute for Child Health and Development, Tokyo, Japan
| | - Y Wada
- 4 Division of Neonatology, Center for Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, Tokyo, Japan
| | - M Onodera
- 3 Department of Human Genetics, National Research Institute for Child Health and Development, Tokyo, Japan
| | - A Murashima
- 1 Division of Maternal Medicine, Center for Maternal-Fetal, Neonatal and Reproductive Medicine, National Center for Child Health and Development, Tokyo, Japan
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Kaneko K, Suematsu E, Miyamura T, Ishioka H. Differences of articular and extra-articular involvement in polymyalgia rheumatica: A comparison by whole-body FDG-PET/CT. Mod Rheumatol 2019; 30:358-364. [PMID: 30843747 DOI: 10.1080/14397595.2019.1591065] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Objectives: To clarify differences in incidences of articular and extra-articular involvement in patients with polymyalgia rheumatica (PMR) using FDG-PET/CT.Methods: Twenty PMR patients were enrolled in this retrospective study. We compared frequency, degree, and patterns (diffuse or non-diffuse) of abnormal FDG accumulation in the proximal and distal articular structures (PAS, DAS), and extra-articular synovial structures (ESS). Regional analyses were performed for the large joints (shoulder, hip, and knee).Results: The incidences of positive FDG accumulation were significantly higher in the PAS (96.7%) and ESS (91.4%) than in the DAS (31.8%, p < .0001), although, the incidence in the knees (96.2%) was exceptionally high. PAS (2.79 ± 0.61) and ESS (2.52 ± 0.85) had significantly higher visual scores than DAS (0.89 ± 1.33, p < .0001). Shoulder, hip, and knee joints each had a different accumulation pattern. Strong FDG accumulation was frequently observed in the medial-to-subscapular part of the shoulder joints, the lateral part of the hip joints, and the medial part of the knee joints.Conclusion: ESS were found to be the main affected areas in PMR patients as well as PAS. DAS involvement occurred with low frequency except in the knee joints. Each large joint showed a different accumulation pattern and its own characteristically strongly affected areas.
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Affiliation(s)
- Koichiro Kaneko
- Department of Radiology, Fukuoka Memorial PET Imaging and Medical Checkup Center, Fukuoka, Japan
| | - Eiichi Suematsu
- Division of Internal Medicine and Rheumatology, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Tomoya Miyamura
- Division of Internal Medicine and Rheumatology, National Hospital Organization Kyushu Medical Center, Fukuoka, Japan
| | - Hisakazu Ishioka
- Department of Radiology, Fukuoka Memorial Hospital, Fukuoka, Japan
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Suehara Y, Kohsaka S, Kurisaki A, Akaike K, Hayashi T, Mogushi K, Okubo T, Kim Y, Sato S, Kobayashi E, Kaneko K, Mano H, Saito T. Comprehensive mRNA-based screen for tyrosine kinase fusions and a de novo alternative transcription initiation site in soft tissue sarcomas. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy443.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Affiliation(s)
- H Yokoi
- Fukuoka Sanno Hospital, Cardiovascular Medicine, Fukuoka, Japan
| | - E Oda
- AC Medical Inc., Tokyo, Japan
| | - K Kaneko
- Medical Data Vision Co., Ltd., Tokyo, Japan
| | - H Matsuo
- Daiichi Sankyo Co., Ltd., Tokyo, Japan
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Maeda M, Maeda H, Iwase H, Kanda A, Morohashi I, Obayashi O, Kaneko K, Sato T, Arai Y. Dynamic motion and principal component analysis of step-over in patients with Musculoskeletal ambulation disability symptom complex (MADS). Ann Phys Rehabil Med 2018. [DOI: 10.1016/j.rehab.2018.05.1013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Takayanagi F, Fukuuchi T, Yamaoka N, Kaneko K. The observed variation in the purine composition of food after soaking in sake lees. Nucleosides Nucleotides Nucleic Acids 2018; 37:348-352. [PMID: 29750589 DOI: 10.1080/15257770.2018.1465185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
In this study, we investigated the alterations in the purine composition of swordfish prepared using a traditional Japanese processing method of soaking in sake lees. These alterations are the byproducts of the yeast fermentation of rice-koji and are renowned for enhancing the umami nature of food. Using a conventional assay method for hydrolyzing all of the purines into four bases and our developed method for simultaneously analyzing purines, we observed the alterations in four purine bases in the soaked sake lees and swordfish. The findings showed that the total purine content, and hypoxanthine-related and guanine-related purines in swordfish decreased after soaking in sake lees. We also analyzed the free purine composition and showed that the ratio of IMP in swordfish was decreased by soaking, while that of inosine in sake lees was increased by soaking swordfish in it.
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Affiliation(s)
- F Takayanagi
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Tokyo , Japan
| | - T Fukuuchi
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Tokyo , Japan
| | - N Yamaoka
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Tokyo , Japan
| | - K Kaneko
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Tokyo , Japan
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Fukuuchi T, Iyama N, Yamaoka N, Kaneko K. Simultaneous quantification by HPLC of purines in umami soup stock and evaluation of their effects on extracellular and intracellular purine metabolism. Nucleosides Nucleotides Nucleic Acids 2018; 37:273-279. [PMID: 29652211 DOI: 10.1080/15257770.2018.1453074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Ribonucleotide flavor enhancers such as inosine monophosphate (IMP) and guanosine monophosphate (GMP) provide umami taste, similarly to glutamine. Japanese cuisine frequently uses soup stocks containing these nucleotides to enhance umami. We quantified 18 types of purines (nucleotides, nucleosides, and purine bases) in three soup stocks (chicken, consommé, and dried bonito soup). IMP was the most abundant purine in all umami soup stocks, followed by hypoxanthine, inosine, and GMP. The IMP content of dried bonito soup was the highest of the three soup stocks. We also evaluated the effects of these purines on extracellular and intracellular purine metabolism in HepG2 cells after adding each umami soup stock to the cells. An increase in inosine and hypoxanthine was evident 1 h and 4 h after soup stock addition, and a low amount of xanthine and guanosine was observed in the extracellular medium. The addition of chicken soup stock resulted in increased intracellular and extracellular levels of uric acid and guanosine. Purine metabolism may be affected by ingredients present in soups.
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Affiliation(s)
- T Fukuuchi
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Japan
| | - N Iyama
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Japan
| | - N Yamaoka
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Japan
| | - K Kaneko
- a Laboratory of Biomedical and Analytical Sciences, Faculty of Pharma-Science , Teikyo University , Japan
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Masuda N, Sato N, Morimoto T, Ueno T, Kanbayashi C, Kaneko K, Yasojima H, Saji S, Sasano H, Morita S, Ohno S, Toi M. Abstract P3-13-06: Tailored neoadjuvant endocrine and chemo-endocrine therapy for postmenopausal patients with estrogen receptor-positive human epidermal growth factor receptor 2-negative primary breast cancer. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p3-13-06] [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] [Indexed: 11/16/2022]
Abstract
Abstract
Aims We investigated the efficacy and safety of initial neoadjuvant endocrine therapy with exemestane (EXE) alone followed by subsequent tailored treatment with EXE alone for responders or EXE plus oral metronomic cyclophosphamide (CPA) for non-responders.
Methods In this multicenter open-label phase II study, we enrolled postmenopausal patients with primary invasive estrogen receptor (ER)-positive, HER2-negative, stage I–IIIA (T1c–T3 N0–2 M0) breast cancer and Ki67 index ≤ 30%. Patients first received EXE 25mg/day for 12 weeks. Based on clinical response and change in Ki67 index in response to the initial therapy, patients who achieved complete response (CR), partial response (PR) with Ki67 index ≤5% after treatment, or stable disease (SD) with Ki67 index ≤5% both before and after treatment were defined as responders. Non-responders were defined as patients with PR and Ki67 index >5% after treatment, or SD and Ki67 index >5% before or after treatment. For the subsequent 24 weeks, responders continued the EXE monotherapy (continued EXE group), whereas non-responders switched to combination therapy with EXE plus CPA 50mg/day (EXE+CPA group). The primary endpoint was clinical response (CR and PR) at weeks 24 and 36.
Results A total of 59 patients (median age 69 years, range 53–86 years) were enrolled between January 2011 and July 2015. After exclusion of 3 (2 with progressive disease, 1 with an adverse event, AE) who discontinued treatment in the initial 12-week EXE monotherapy period, 56 remained enrolled to receive subsequent treatment. After 8–12 weeks of the initial EXE monotherapy, 14 patients were classified as responders (9 with PR and Ki67 index ≤5% after treatment; 5 with SD and Ki67 index ≤5% before and after treatment), whereas 42 were classified as non-responders (3 with PR and Ki67 index >5% after treatment; 39 with SD and Ki67 index >5% before or after treatment). Clinical response rates at weeks 24 and 36 were 85% (12/14, 95%CI 57.2–98.2%) and 76% (10/13, 95%CI 46.2–95.0%), respectively, in the continued EXE group, and 56% (23/41, 95%CI 39.7–71.5%) and 76% (30/39, 95%CI 60.7–88.9%), respectively, in the EXE+CPA group. At week 36, no significant difference was found in median Ki67 index between the continued EXE and EXE+CPA groups (3.5% and 4.0%, respectively). The proportion of patients with preoperative endocrine prognostic index (PEPI) 0 was also similar between the continued EXE and EXE+CPA groups (21.4% and 23.8%, respectively). The breast-conserving surgery rate was 71.4% and 69.0%, respectively. Grade 3 AEs were elevated liver enzymes (1 patient) in the continued EXE group, and gastritis, hypertriglyceridemia, and bone mineral density loss (1 patient each) in the EXE+CPA group.
Conclusion Switching from EXE monotherapy to EXE+CPA combination therapy based on clinical response and biological response (change in Ki67 index) to initial therapy improved subsequent clinical response in non-responders. Favorable clinical response to EXE alone was maintained in responders. Tailored neoadjuvant endocrine and chemo-endocrine therapy was shown to be effective in postmenopausal ER-positive breast cancer patients. (JBCRG-11CPA; UMIN000004751)
Citation Format: Masuda N, Sato N, Morimoto T, Ueno T, Kanbayashi C, Kaneko K, Yasojima H, Saji S, Sasano H, Morita S, Ohno S, Toi M. Tailored neoadjuvant endocrine and chemo-endocrine therapy for postmenopausal patients with estrogen receptor-positive human epidermal growth factor receptor 2-negative primary breast cancer [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P3-13-06.
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Affiliation(s)
- N Masuda
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - N Sato
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - T Morimoto
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - T Ueno
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - C Kanbayashi
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - K Kaneko
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - H Yasojima
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - S Saji
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - H Sasano
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - S Morita
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - S Ohno
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
| | - M Toi
- National Hospital Organization Osaka National Hospital, Osaka, Japan; Niigata Cancer Center, Niigata, Japan; Yao Municipal Hospital, Yao, Osaka, Japan; School of Medicine, Kyorin University, Mitaka, Tokyo, Japan; Fukushima Medical University, Fukushima, Japan; Tohoku University, Sendai, Miyagi, Japan; Kyoto University Graduate School of Medicine, Kyoto, Japan; Breast Oncology Center, Cancer Institute Hospital, Ariake, Tokyo, Japan; Graduate School of Medicine, Kyoto, Japan
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Takeuchi N, Hogeweg P, Kaneko K. Conceptualizing the origin of life in terms of evolution. Philos Trans A Math Phys Eng Sci 2017; 375:rsta.2016.0346. [PMID: 29133445 PMCID: PMC5686403 DOI: 10.1098/rsta.2016.0346] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/08/2017] [Indexed: 06/07/2023]
Abstract
In this opinion piece, we discuss how to place evolution in the context of origin-of-life research. Our discussion starts with a popular definition: 'life is a self-sustained chemical system capable of undergoing Darwinian evolution'. According to this definition, the origin of life is the same as the origin of evolution: evolution is the 'end' of the origin of life. This perspective, however, has a limitation, in that the ability of evolution in and of itself is insufficient to explain the origin of life as we know it, as indicated by Spiegelman's and Lincoln and Joyce's experiments. This limitation provokes a crucial question: What conditions are required for replicating systems to evolve into life? From this perspective, the origin of life includes the emergence of life through evolution: evolution is a 'means' of the origin of life. After reviewing Eigen's pioneering work on this question, we mention our ongoing work suggesting that a key condition might be conflicting multi-level evolution. Taken together, there are thus two questions regarding the origin of life: how evolution gets started, and how evolution produces life. Evolution is, therefore, at the centre of the origin of life, where the two lines of enquiry must meet.This article is part of the themed issue 'Reconceptualizing the origins of life'.
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Affiliation(s)
- N Takeuchi
- Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - P Hogeweg
- Theoretical Biology and Bioinformatics Group, Utrecht University, Utrecht, The Netherlands
| | - K Kaneko
- Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
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Kaneko K, Miyamoto Y, Tsukuura R, Sasa K, Akaike T, Fujii S, Yoshimura K, Nagayama K, Hoshino M, Inoue S, Maki K, Baba K, Chikazu D, Kamijo R. 8-Nitro-cGMP is a promoter of osteoclast differentiation induced by RANKL. Nitric Oxide 2017; 72:46-51. [PMID: 29183803 DOI: 10.1016/j.niox.2017.11.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/07/2017] [Accepted: 11/17/2017] [Indexed: 10/18/2022]
Abstract
Osteoclasts are multinucleated giant cells differentiated from monocyte-macrophage-lineage cells under stimulation of receptor activator of nuclear factor κ-B (RANK) ligand (RANKL) produced by osteoblasts and osteocytes. Although it has been reported that nitric oxide (NO) and reactive oxygen species (ROS) are involved in this process, the mechanism by which these labile molecules promote osteoclast differentiation are not fully understood. In this study, we investigated the formation and function of 8-nitro-cGMP, a downstream molecule of NO and ROS, in the process of osteoclast differentiation in vitro. 8-Nitro-cGMP was detected in mouse bone marrow macrophages and osteoclasts differentiated from macrophages in the presence of RANKL. Inhibition of NO synthase suppressed the formation of 8-nitro-cGMP as well as RANKL-induced osteoclast differentiation from macrophages. On the other hand, RANKL-induced osteoclast differentiation was promoted by addition of 8-nitro-cGMP to the cultures. In addition, 8-nitro-cGMP enhanced the mRNA expression of RANK, the receptor for RANKL. However, 8-bromo-cGMP, a membrane-permeable derivative of cGMP, did not have an effect on either RANKL-induced osteoclast differentiation or expression of the RANK gene. These results suggest that 8-nitro-cGMP is a novel positive regulator of osteoclast differentiation, which might help to explain the roles of NO and ROS in osteoclast differentiation.
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Affiliation(s)
- K Kaneko
- Department of Biochemistry, Showa University School of Dentistry, Japan; Department of Oral and Maxillofacial Surgery, Tokyo Medical University, Japan
| | - Y Miyamoto
- Department of Biochemistry, Showa University School of Dentistry, Japan.
| | - R Tsukuura
- Department of Biochemistry, Showa University School of Dentistry, Japan; Department of Oral and Maxillofacial Surgery, Tokyo Medical University, Japan
| | - K Sasa
- Department of Biochemistry, Showa University School of Dentistry, Japan
| | - T Akaike
- Department of Environmental Health Sciences and Molecular Toxicology, Tohoku University Graduate School of Medicine, Japan
| | - S Fujii
- Department of Environmental Health Sciences and Molecular Toxicology, Tohoku University Graduate School of Medicine, Japan
| | - K Yoshimura
- Department of Biochemistry, Showa University School of Dentistry, Japan
| | - K Nagayama
- Department of Biochemistry, Showa University School of Dentistry, Japan; Department of Orthodontics, Showa University School of Dentistry, Japan
| | - M Hoshino
- Department of Prosthodontics, Showa University School of Dentistry, Japan
| | - S Inoue
- Department of Prosthodontics, Showa University School of Dentistry, Japan
| | - K Maki
- Department of Orthodontics, Showa University School of Dentistry, Japan
| | - K Baba
- Department of Prosthodontics, Showa University School of Dentistry, Japan
| | - D Chikazu
- Department of Oral and Maxillofacial Surgery, Tokyo Medical University, Japan
| | - R Kamijo
- Department of Biochemistry, Showa University School of Dentistry, Japan
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Suehara Y, Tanabe Y, Akaike K, Mogushi K, Hayashi T, Kurihara T, Kaneko K, Saito T. Anti-tumor activity of tyrosine kinase inhibitors in alveolar soft part sarcoma. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx675.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Takai Y, Misu T, Nishiyama S, Kuroda H, Kaneko K, Ogawa R, Takahashi T, Ichiro N, Suzuki H, Kazuo F, Masashi A. The staging of astrocytopathy in aquaporin 4-igg-positive neuromyelitis optica spectrum disorders. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.400] [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]
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Takahashi Y, Soga K, Igarashi S, Otani T, Irioka T, Kaneko K, Takahashi T, Nakashima I, Yokota T. Two cases of anti-myelin oligodendrocyte glycoprotein-IGG positive optic neuritis with different courses. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Sawada J, Takeguchi S, Kano K, Takahashi K, Saito T, Katayama T, Takahashi T, Kaneko K, Nakashima I, Hasebe N. Clinical differences between myelin oligodendrocyte glycoprotein antibody-positive and aquaporin-4 antibody-positive patients with central nervous system lesions. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2988] [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: 12/01/2022]
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Kawasaki R, Sakuishi K, Kubota A, Kaneko K, Takahashi T, Hayashi T, Shimizu J, Tsuji S. Single institutional study on the clinical features of anti-MOG antibody-associated brain lesions. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kuzen M, Kawabe K, Kaneko K, Takahasi T, Junya Ebina J, Hanashiro S, Sawada M, Nagasawa J, Yanagihashi M, Miura K, Takazawa T, Murata K, Kano O, Ikeda K, Iwasaki Y. Influenza-associated encephalitis with anti-mog antibody positive. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3225] [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: 11/25/2022]
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