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Mizuiri S, Nishizawa Y, Yamashita K, Doi T, Okubo A, Morii K, Usui K, Arita M, Naito T, Shigemoto K, Masaki T. Effects of overhydration, Kt/Vurea, β2-microglobulin on coronary artery calcification and mortality in haemodialysis patients. Nephrology (Carlton) 2024. [PMID: 38515301 DOI: 10.1111/nep.14290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 02/01/2024] [Accepted: 02/23/2024] [Indexed: 03/23/2024]
Abstract
AIM We studied the effects of overhydration (OH), Kt/Vurea and β2-microglobulin (β2-MG) on coronary artery calcification and mortality in patients undergoing haemodialysis (HD). METHODS The Agatston coronary artery calcium score (CACS), postdialysis body composition using bioimpedance analysis, single-pool Kt/Vurea and predialysis β2-MG at baseline were assessed and followed up for 3 years in patients undergoing HD. We performed logistic regression analyses for a CACS ≥400 and Cox proportional hazard analyses for all-cause and cardiovascular mortality. RESULTS The study involved 338 patients with a median age of 67 (56-74) years, dialysis duration of 70 (33-141) months and diabetes prevalence of 39.1% (132/338). Patients with a CACS ≥400 (n = 222) had significantly higher age, dialysis duration, male prevalence, diabetes prevalence, C-reactive protein, predialysis β2-MG, OH, extracellular water/total body water and overhydration/extracellular water (OH/ECW) but significantly lower Kt/Vurea than patients with a CACS <400 (n = 116) (p < .05). OH/ECW, Kt/Vurea and predialysis β2-MG were significant predictors of a CACS ≥400 (p < .05) after adjusting for age, dialysis duration, serum phosphate and magnesium. In all patients, cut-off values of OH/ECW, Kt/Vurea and predialysis β2-MG for a CACS ≥400 were 16%, 1.74 and 28 mg/L, respectively. After adjusting for dialysis duration, OH/ECW ≥16%, Kt/Vurea ≥1.74 and β2-MG ≥28 mg/L were significant predictors of 3-year all-cause mortality but not 3-year cardiovascular mortality. CONCLUSION Higher OH/ECW, higher predialysis β2-MG and lower Kt/Vurea values are significant risk factors for a CACS ≥400 and 3-year all-cause mortality in patients undergoing maintenance HD.
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Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | | | | | - Toshiki Doi
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | - Aiko Okubo
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | - Kenichi Morii
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic, Hiroshima, Japan
| | | | | | | | - Takao Masaki
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
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Mizuiri S, Nishizawa Y, Yamashita K, Doi T, Okubo A, Morii K, Usui K, Arita M, Naito T, Shigemoto K, Masaki T. Absolute iron deficiency, coronary artery calcification and cardiovascular mortality in maintenance haemodialysis patients. Nephrology (Carlton) 2024. [PMID: 38501665 DOI: 10.1111/nep.14289] [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: 07/24/2023] [Revised: 11/24/2023] [Accepted: 02/24/2024] [Indexed: 03/20/2024]
Abstract
AIM The effects of iron on vascular calcification in rats and vascular smooth muscle cells were recently reported, but clinical studies on iron and vascular calcification are scant. We studied the associations of absolute iron deficiency, coronary artery calcification and mortality in patients with maintenance haemodialysis (MHD). METHODS Transferrin saturation (TSAT), ferritin, mean corpuscular haemoglobin (MCH) and Agatston coronary artery calcium score (CACS) were studied at baseline in MHD patients and followed up for 3 years. Cox proportional hazard analyses for mortality and linear regression analyses for CACS were performed. RESULTS In 306 patients, the median age was 67 (56-81) years, dialysis duration was 76 (38-142) months, and diabetes prevalence was 42.5%. Fifty-two patients had died by 3 years. Patients with absolute iron deficiency (TSAT <20% and ferritin <100 ng/mL) (n = 102) showed significantly higher CACS (p = .0266) and C-reactive protein (p = .0011), but a lower frequency of iron formulation administration compared with patients without absolute iron deficiency at baseline (n = 204). Absolute iron deficiency was a significant predictor for 3-year cardiovascular (CV) mortality (hazard ratio: 2.08; p = .0466), but not for 3-year all-cause mortality. CACS was significant predictor for both 3-year CV and all-cause mortality (p <.05). Absolute iron deficiency and MCH were significant determinants of CACS (p < .05). CONCLUSION MHD patients with absolute iron deficiency showed significantly higher CACS than others, and absolute iron deficiency was a significant risk factor for coronary artery calcification and 3-year CV mortality in MHD patients, but was not a significant predictor for 3-year all-cause mortality.
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Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | | | | | - Toshiki Doi
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | - Aiko Okubo
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | - Kenichi Morii
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic, Hiroshima, Japan
| | | | | | | | - Takao Masaki
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
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Okubo A, Doi T, Yamada Y, Morii K, Nishizawa Y, Yamashita K, Fudaba Y, Shigemoto K, Mizuiri S, Usui K, Arita M, Naito T, Masaki T. Early arteriovenous fistula failure associated with mortality and major adverse cardiovascular events in patients undergoing incident hemodialysis. J Vasc Access 2023:11297298231215106. [PMID: 38053252 DOI: 10.1177/11297298231215106] [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] [Indexed: 12/07/2023] Open
Abstract
BACKGROUND Arteriovenous fistula (AVF) patency is important for patients undergoing hemodialysis. The association between early AVF failure and the prognosis, including all-cause mortality and major adverse cardiovascular events (MACE), has not been fully investigated. The present study was performed to investigate the association between early AVF failure and 3-year mortality, cardiovascular disease (CVD) mortality, and MACE. METHODS We analyzed 358 patients who started hemodialysis in our institution from October 2008 to February 2020. We defined early AVF failure as cases requiring percutaneous transluminal angioplasty or reoperation within 1 year after AVF surgery. The patients were divided into two groups according to the presence or absence of early AVF failure, and the prognosis of each group was examined. The association between early AVF failure and outcomes (3-year all-cause mortality, CVD mortality, and MACE) was determined using Cox proportional hazards regression analysis. RESULTS During the 3-year follow-up, 75 (20.9%) patients died (cardiovascular death: n = 39) and 145 patients developed MACE. According to the multivariable analysis, the early AVF failure group had a significantly higher risk of 3-year all-cause mortality (hazard ratio [HR], 1.42; 95% confidence interval [CI], 1.09-1.83; p = 0.009), CVD mortality (HR, 1.54; 95% CI, 1.29-2.08; p < 0.001), and MACE (HR, 1.68; 95% CI, 1.25-2.26; p < 0.001). When the patients were stratified by age, early AVF failure was associated with 3-year all-cause mortality in all groups except for the younger group (<65 years of age). CONCLUSIONS Early AVF failure was associated with an increased risk of 3-year all-cause mortality, CVD mortality, and MACE.
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Affiliation(s)
- Aiko Okubo
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Toshiki Doi
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
| | - Yumi Yamada
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Kenichi Morii
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
| | - Yoshiko Nishizawa
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Kazuomi Yamashita
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Yasuhiro Fudaba
- Department of Surgery, Ichiyokai Harada Hospital, Hiroshima, Japan
| | | | - Sonoo Mizuiri
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic, Hiroshima, Japan
| | | | | | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
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Mizuiri S, Nishizawa Y, Yamashita K, Doi T, Okubo A, Morii K, Usui K, Arita M, Naito T, Shigemoto K, Masaki T. α1‐ and β2‐Microglobulin reduction ratios and survival in patients on predilution online haemodiafiltration. Nephrology (Carlton) 2022; 28:44-50. [DOI: 10.1111/nep.14125] [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] [Received: 08/25/2022] [Revised: 10/16/2022] [Accepted: 10/28/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology Ichiyokai Harada Hospital Hiroshima Japan
| | | | | | - Toshiki Doi
- Division of Nephrology Ichiyokai Harada Hospital Hiroshima Japan
- Department of Nephrology Hiroshima University Hiroshima Japan
| | - Aiko Okubo
- Division of Nephrology Ichiyokai Harada Hospital Hiroshima Japan
- Department of Nephrology Hiroshima University Hiroshima Japan
| | - Kenichi Morii
- Division of Nephrology Ichiyokai Harada Hospital Hiroshima Japan
- Department of Nephrology Hiroshima University Hiroshima Japan
| | - Koji Usui
- Division of Dialysis Ichiyokai Ichiyokai Clinic Hiroshima Japan
| | - Michiko Arita
- Division of Dialysis Iciyokai East Clinic Hiroshima Japan
| | - Takayuki Naito
- Division of Dialysis Ichiyokai Yokogawa Clinic Hiroshima Japan
| | | | - Takao Masaki
- Department of Nephrology Hiroshima University Hiroshima Japan
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Naito T, Doi T, Morii K, Usui K, Arita M, Yamashita K, Shigemoto K, Nishizawa Y, Mizuiri S, Sasaki K, Masaki T. Synergistic Effects of the Geriatric Nutritional Risk Index and the Modified Creatinine Index for Predicting Mortality in Patients on Hemodialysis. Nutrients 2022; 14:nu14122398. [PMID: 35745130 PMCID: PMC9230177 DOI: 10.3390/nu14122398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 02/01/2023] Open
Abstract
This study aimed to investigate whether a combined estimation of the geriatric nutritional risk index (GNRI) and the modified creatinine index (mCI) provides synergistic information for mortality in patients treated by chronic hemodialysis. We analyzed 499 patients on hemodialysis for five years. We set each cut-off value as the high (≥92) and low (<92) GNRI groups and the high (≥21 mg/kg/day) and low (<21 mg/kg/day) mCI groups, and divided them into four subgroups: G1, high GNRI + high mCI; G2, high GNRI + low mCI; G3, low GNRI + high mCI; and G4, low GNRI + low mCI. The survival rate was evaluated and time-to-event analysis was performed. All-cause death occurred in 142 (28%) patients. Kaplan−Meier curves showed that G2 and G4 had a significantly worse outcome (p < 0.05) than G1 but not G3. Using the multivariable-adjusted model, only G4 was significantly associated with all-cause mortality compared with G1. Our study suggests that the synergistic effects of the GNRI and the mCI are helpful in predicting all-cause mortality. The combination of these indices may be superior to a single method to distinguish patients who are well or moderately ill from potentially severely ill.
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Affiliation(s)
| | - Toshiki Doi
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima 731-5134, Japan; (K.M.); (K.Y.); (K.S.); (Y.N.); (S.M.)
- Department of Kidney Disease and Community Medicine, Hiroshima University Hospital, Hiroshima 734-8551, Japan
- Correspondence: ; Tel.: +81-82-257-1506
| | - Kenichi Morii
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima 731-5134, Japan; (K.M.); (K.Y.); (K.S.); (Y.N.); (S.M.)
- Department of Kidney Disease and Community Medicine, Hiroshima University Hospital, Hiroshima 734-8551, Japan
| | - Koji Usui
- Ichiyokai Clinic, Hiroshima 731-5133, Japan;
| | | | - Kazuomi Yamashita
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima 731-5134, Japan; (K.M.); (K.Y.); (K.S.); (Y.N.); (S.M.)
| | - Kenichiro Shigemoto
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima 731-5134, Japan; (K.M.); (K.Y.); (K.S.); (Y.N.); (S.M.)
| | - Yoshiko Nishizawa
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima 731-5134, Japan; (K.M.); (K.Y.); (K.S.); (Y.N.); (S.M.)
| | - Sonoo Mizuiri
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima 731-5134, Japan; (K.M.); (K.Y.); (K.S.); (Y.N.); (S.M.)
| | - Kensuke Sasaki
- Department of Nephrology, Hiroshima University Hospital, Hiroshima 734-8551, Japan; (K.S.); (T.M.)
| | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, Hiroshima 734-8551, Japan; (K.S.); (T.M.)
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Mizuiri S, Nishizawa Y, Doi T, Yamashita K, Shigemoto K, Usui K, Arita M, Naito T, Doi S, Masaki T. Coronary artery calcification is a risk factor for intradialytic hypotension in patients undergoing hemodialysis. Hemodial Int 2022; 26:335-344. [DOI: 10.1111/hdi.13016] [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] [Received: 07/27/2021] [Revised: 01/27/2022] [Accepted: 03/25/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology Ichiyokai Harada Hospital Hiroshima Japan
| | | | - Toshiki Doi
- Division of Nephrology Ichiyokai Harada Hospital Hiroshima Japan
- Department of Nephrology Hiroshima University Hospital Hiroshima Japan
| | | | | | - Koji Usui
- Ichiyokai Ichiyokai Clinic Hiroshima Japan
| | | | | | - Shigehiro Doi
- Department of Nephrology Hiroshima University Hospital Hiroshima Japan
| | - Takao Masaki
- Department of Nephrology Hiroshima University Hospital Hiroshima Japan
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Mizuiri S, Nishizawa Y, Doi T, Okubo A, Shigemoto K, Usui K, Arita M, Naito T, Doi S, Masaki T. Convection volume, β2-microglobulin and α1-microglobulin reduction ratios, and body composition in predilution online haemodiafiltration. Nephrology (Carlton) 2022; 27:601-609. [PMID: 35278013 DOI: 10.1111/nep.14038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 02/24/2022] [Accepted: 03/07/2022] [Indexed: 11/28/2022]
Abstract
AIM The effect of convection volume (CV) in patients on predilution online haemodiafiltration (Pre-OL-HDF) was evaluated. METHODS We conducted a retrospective, cross-sectional study in 126 patients on Pre-OL-HDF. Dialysis conditions, laboratory data, and same day post-dialysis body composition measurements using bioimpedance spectroscopy were assessed. Patients were divided into two groups according to their CV: ≥ median value and < median value. Linear regression analyses for reduction ratios (RRs) of β2-microglobulin and α1-microglobulin, and body composition, were conducted. RESULTS Age, dialysis vintage, and CVs of the study patients were 64 ± 12 years, 81 (48-154) months, and 43.2 (38.5-55.9) L/session, respectively. The higher CV (≥ 43 L/session) group (n=66) had significantly higher RRs of β2-microglobulin and α1-microglobulin, lean tissue index, body cell mass index, total body water (TBW), extracellular water (ECW), and intracellular water (ICW) compared with the lower CV (< 43 L/session) group (n = 60; P < 0.01). Serum albumin and fat tissue index were not significantly different between the groups. CV/ECW, CV/TBW, and CV/ICW but not un-adjusted CV, were significant determinants for β2-microglobulin and α1-microglobulin RRs (P < 0.05). Lean tissue and body cell mass indexes, but not the fat tissue index, showed significant associations with CV, and RRs of β2-microglobulin and α1-microglobulin (P < 0.05). CONCLUSIONS Among patients on Pre-OL-HDF, higher values in the lean tissue index and body cell mass index were observed in those with higher CV versus lower CV, and CV adjusted to body water may be useful to prescribe individualized conditions for Pre-OL-HDF. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, Japan
| | - Yoshiko Nishizawa
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, Japan
| | - Toshiki Doi
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, Japan.,Department of Nephrology, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, Japan
| | - Aiko Okubo
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, Japan.,Department of Nephrology, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, Japan
| | - Kenichiro Shigemoto
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic, 10-3 Asahien, Saeki-ku, Hiroshima, Japan
| | - Michiko Arita
- Iciyokai East Clinic, 1-3-53 Danbaraminami Minami-ku, Hiroshima, Japan
| | - Takayuki Naito
- Ichiyokai Yokogawa Clinic, 2-7-9 Yokogawacho Nishi-ku, Hiroshima, Japan
| | - Shigehiro Doi
- Department of Nephrology, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University, 1-2-3 Kasumi Minami-ku, Hiroshima, Japan
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Okubo A, Doi T, Morii K, Nishizawa Y, Yamashita K, Shigemoto K, Mizuiri S, Usui K, Arita M, Naito T, Masaki T. Utility of CHA2DS2-VASc Score to Predict Mid-Term Clinical Outcomes in Hemodialysis Patients. Am J Nephrol 2022; 53:169-175. [PMID: 35259747 DOI: 10.1159/000522225] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 11/17/2021] [Accepted: 01/23/2022] [Indexed: 11/19/2022]
Abstract
BACKGROUND The CHA2DS2-VASc score has been widely used to predict stroke in patients with atrial fibrillation (AF). Recently, it was reported that the CHA2DS2-VASc score helps predict cardiovascular disease (CVD) or all-cause mortality in patients with or without AF. However, few reports have examined the association between this score and mortality in hemodialysis (HD) patients. METHODS We analyzed 557 consecutive patients who initiated HD at our facilities between February 2005 and October 2017. The CHA2DS2-VASc score was calculated at the time of initiation of HD. Patients were then categorized into three groups according to their CHA2DS2-VASc scores: 0-1 (low), 2-3 (intermediate), and 4-9 (high). Multivariate Cox proportional hazards analysis was used to assess independent risk factors for 3-year all-cause mortality. RESULTS During the 3-year follow-up period, 153 (27.5%) patients died (cardiovascular death: n = 88). According to multivariate analysis, serum albumin (hazard ratio [HR] 0.60, 95% confidence interval [CI] 0.43-0.85, p = 0.003), creatinine (HR 0.91, 95% CI 0.84-0.99, p = 0.049), and CHA2DS2-VASc score (HR 1.33, 95% CI 1.20-1.46, p < 0.001) were associated with 3-year all-cause mortality. Compared with patients in the low CHA2DS2-VASc score group, those in the intermediate- and high-score groups had a higher risk for all-cause and CVD mortality (all-cause mortality: HR 1.77, 95% CI 1.23-2.55, p = 0.002 and HR 2.94, 95% CI 1.90-4.53, p < 0.001, respectively; CVD mortality: HR 1.82, 95% CI 1.27-2.59, p = 0.001 and HR 2.85, 95% CI 1.88-4.31, p < 0.001, respectively). CONCLUSION The CHA2DS2-VASc score is a valuable predictor of 3-year all-cause and CVD mortality in incident HD patients.
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Affiliation(s)
- Aiko Okubo
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Toshiki Doi
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Kidney Disease and Community Medicine, Hiroshima University Hospital, Hiroshima, Japan
| | - Kenichi Morii
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
- Department of Kidney Disease and Community Medicine, Hiroshima University Hospital, Hiroshima, Japan
| | - Yoshiko Nishizawa
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Kazuomi Yamashita
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | | | - Sonoo Mizuiri
- Department of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic, Hiroshima, Japan
| | | | | | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
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Takahashi M, Okada K, Ouch R, Konno T, Usui K, Suzuki H, Satoh M, Kogure T, Satoh K, Watanabe Y, Nakamura H, Murai Y. Fibronectin plays a major role in hypoxia-induced lenvatinib resistance in hepatocellular carcinoma PLC/PRF/5 cells. Pharmazie 2021; 76:594-601. [PMID: 34986955 DOI: 10.1691/ph.2021.1854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Resistance to lenvatinib mesylate (LEN), a systemic chemotherapy that can be administered orally, has been a major issue for treatment of hepatocellular carcinoma (HCC). Although HCC is the tumor that most exhibits intratumoral hypoxia, which has been shown to be involved in the development of treatment resistance, there are no reports of LEN resistance in HCC treatment under hypoxia. The purpose of our study was to elucidate the mechanism of treatment resistance to LEN under hypoxia using HCC cell lines. We confirmed LEN resistance under hypoxic conditions in HCC cell lines. There was a significant increase in the IC50 value of PLC/PRF/5 cells from 13.0±0.8 μM in normoxia to 21.3±1.1 μM in hypoxia, but in HepG2 cells, the increase was not significant. To elucidate the LEN resistance mechanism of PLC/PRF/5 cells under hypoxia, we performed microarray analysis and extracted genes that are thought to be related to this mechanism. Furthermore, in-silico analysis confirmed significant changes in the extracellular matrix, and among them, FN1 encoding fibronectin was determined as the hub of the gene cluster. The expression of fibronectin in PLC/PRF/5 cells examined with immunofluorescence staining was significantly elevated in and outside of cells under hypoxia, and tended to decrease when cells were exposed to LEN under normoxia. Furthermore, the fibronectin concentration in the culture solution of PLC/PRF/5 cells examined by ELISA was 2.3 times higher under hypoxia than under normoxia under LEN(-) conditions, and 1.6 times higher under hypoxia than under normoxia under LEN(+) conditions. It is assumed that in PLC/PRF/5 cells, fibronectin is probably suppressed as an indirect effect of LEN under normoxia, but transcription factors such as HIF-1α are induced under hypoxia, thus enhancing the production of fibronectin and attenuating the effect of LEN, resulting in drug resistance. This behavior of fibronectin with LEN exposure under hypoxia is probably specific to PLC/PRF/5 cells. Further studies should verify the combined effective inhibition of fibronectin and the MAPK pathway as a promising therapeutic strategy to enhance the value of LEN in HCC treatment.
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Affiliation(s)
- M Takahashi
- Division of Clinical Pharmaceutics, Tohoku Medical and Pharmaceutical University; Miyagi, Japan; Department of Pharmacy, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - K Okada
- Department of Pharmacy, Tohoku Medical and Pharmaceutical University; Miyagi, Japan; Division of Clinical Pharmaceutics and Pharmacy Practice, Tohoku Medical and Pharmaceutical University; Miyagi, Japan;,
| | - R Ouch
- Department of Pharmacy, Tohoku Medical and Pharmaceutical University; Miyagi, Japan; Division of Clinical Pharmaceutics and Pharmacy Practice, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - T Konno
- Division of Clinical Pharmaceutics, Tohoku Medical and Pharmaceutical University; Miyagi, Japan; Department of Pharmacy, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - K Usui
- Department of Pharmacy, Tohoku Medical and Pharmaceutical University; Miyagi, Japan; Division of Clinical Pharmaceutics and Pharmacy Practice, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - H Suzuki
- Division of Clinical Pharmaceutics, Tohoku Medical and Pharmaceutical University; Miyagi, Japan; Department of Pharmacy, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - M Satoh
- Division of Gastroenterology, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - T Kogure
- Division of Gastroenterology, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - K Satoh
- Division of Gastroenterology, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - Y Watanabe
- Division of Clinical Pharmaceutics and Pharmacy Practice, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - H Nakamura
- Division of Clinical Pharmaceutics, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
| | - Y Murai
- Division of Clinical Pharmaceutics, Tohoku Medical and Pharmaceutical University; Miyagi, Japan
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Usui K, Ogawa K, Goto M, Sakano Y, Shikama N, Kyogoku S, Sasai K, Daida H. Cycle-Generative Adversarial Network-Based Image Correction of 4-Dimensional Cone-Beam Computed Tomography for Lung Cancer Adaptive Radiation Therapy. Int J Radiat Oncol Biol Phys 2021. [DOI: 10.1016/j.ijrobp.2021.07.560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Usui K, Matsumoto K, Katayama E, Akamatsu N, Shishido A. A Deformable Low-Threshold Optical Limiter with Oligothiophene-Doped Liquid Crystals. ACS Appl Mater Interfaces 2021; 13:23049-23056. [PMID: 33944546 DOI: 10.1021/acsami.1c06951] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Optical limiting is a phenomenon widely recognized as the potential application for a protector of human eyes and optical sensors from irradiation with lasers. However, a high optical limiting threshold and low flexibility have restricted such applications. Here, we report that oligothiophene-doped liquid crystals (LCs) function as a low-threshold optical limiter with deformability. Irradiation of dye-doped LCs with a continuous wave (CW) laser beam brings about the formation of diffraction rings, and the number of rings changes depending on the incident light intensity due to their photoinduced molecular reorientation. Utilizing such reorientation enables reversible optical limiting without additional multilayered optical components. In particular, an electric field application to a LC-based optical limiter decreases their optical limiting threshold from 2100 to 25 mW/cm2, and the threshold can be tuned by adjusting the applied voltage. Furthermore, the softness of LCs allows for the fabrication of the deformable optical limiter; optical limiting due to the molecular reorientation occurs even in largely bent states. The low-threshold and deformable optical limiter based on oligothiophene-doped LCs thus will enable one to develop the protector of eyes and optical sensors from glaring light-induced damage.
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Affiliation(s)
- Koji Usui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Kohsuke Matsumoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Erika Katayama
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Norihisa Akamatsu
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Atsushi Shishido
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-12, 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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Mizuiri S, Nishizawa Y, Doi T, Yamashita K, Shigemoto K, Usui K, Arita M, Naito T, Doi S, Masaki T. Iron, coronary artery calcification, and mortality in patients undergoing hemodialysis. Ren Fail 2021; 43:371-380. [PMID: 33596750 PMCID: PMC7894440 DOI: 10.1080/0886022x.2021.1880937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Objective A high coronary artery calcification score (CACS) may be associated with high mortality in patients undergoing hemodialysis (HD). Recently, effects of iron on vascular smooth muscle cell calcification have been described. We aimed to investigate the relationships between iron, CACS, and mortality in HD patients. Methods We studied 173 consecutive patients who were undergoing maintenance HD. Laboratory data and Agatston’s CACS were obtained at baseline for two groups of patients: those with CACS ≥400 (n = 109) and those with CACS <400 (n = 64). Logistic regression analyses for CACS ≥400 and Cox proportional hazard analyses for mortality were conducted. Results The median (interquartile range) age and duration of dialysis of the participants were 67 (60–75) years and 73 (37–138) months, respectively. Serum iron (Fe) and transferrin saturation (TSAT) levels were significantly lower in participants with CACS ≥400 than in those with CACS <400, although the serum ferritin concentration did not differ between the groups. TSAT ≥21% was significantly associated with CACS ≥400 (odds ratio 0.46, p<0.05). TSAT ≥17%, Fe ≥63 µg/dL, and ferritin ≥200 ng/mL appear to protect against 5-year all-cause mortality in HD patients, independent of conventional risk factors of all-cause mortality (p < 0.05). Conclusion We have identified associations between iron, CACS, and mortality in HD patients. Lower TSAT was found to be an independent predictor of CACS ≥400, and iron deficiency (low TSAT, iron, or ferritin) was a significant predictor of 5-year all-cause mortality in HD patients.
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Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | | | - Toshiki Doi
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan.,Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
| | | | | | - Koji Usui
- Ichiyokai Ichiyokai Clinic, Hiroshima, Japan
| | | | | | - Shigehiro Doi
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, Hiroshima, Japan
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Mizuiri S, Nishizawa Y, Doi T, Yamashita K, Shigemoto K, Usui K, Arita M, Naito T, Doi S, Masaki T. Association and predictive value of geriatric nutritional risk index, body composition, or bone mineral density in haemodialysis patients. Nephrology (Carlton) 2020; 26:341-349. [PMID: 33169473 DOI: 10.1111/nep.13826] [Citation(s) in RCA: 4] [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: 06/26/2020] [Revised: 10/20/2020] [Accepted: 10/28/2020] [Indexed: 12/15/2022]
Abstract
AIM Assess the association and predictive value of geriatric nutritional risk index (GNRI), body composition, and bone mineral density (BMD) in haemodialysis (HD) patients. METHODS Laboratory data, body composition parameters measured via body composition monitor, and radius, lumbar spine, femoral neck BMD measured using dual energy X-ray absorptiometry were assessed in all subjects on HD or online haemodiafiltration (HDF) at baseline. Regression analysis for GNRI, Cox proportional hazard analyses and comparison of multiple receiver operating characteristic (ROC) curves were performed. RESULTS Among all 264 patients, age was 65 ± 12 years and dialysis vintage was 79 (39-144) months. GNRI tertile (T)1, T2, and T3 were 88 (85-91), 94 (93-95), and 98 (97-101), respectively. Patients in GNRI T1 had lower fat tissue index (FTI), lean tissue index, and femoral neck, lumbar spine, and distal mid-third radius BMD, but higher overhydration/extracellular fluid than patients in GNRI T2 or T3 (P < .05). GNRI was significantly associated with FTI, lean tissue index, and femoral neck, lumbar spine, and distal mid-third radius BMD (P < .01). GNRI was a significant predictor of 2-year all-cause mortality (HR 0.92, P < .05). Area under the ROC curve for all-cause mortality using traditional risk factors (age, sex, diabetes mellitus, cardiovascular disease, use of vasopressors for dialysis-related hypotension, and C-reactive protein) was 0.67 and changed by adding GNRI (0.78, P < .05), FTI (0.75), or femoral neck BMD (0.66), respectively. CONCLUSION Associations between GNRI, body composition, and BMD were confirmed in HD patients. Combining GNRI with traditional risk factors improved mortality prediction in HD patients.
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Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan
| | | | - Toshiki Doi
- Division of Nephrology, Ichiyokai Harada Hospital, Hiroshima, Japan.,Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | | | | | - Koji Usui
- Ichiyokai Ichiyokai Clinic, Hiroshima, Japan
| | | | | | - Shigehiro Doi
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University, Hiroshima, Japan
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Usui K, Oshima M, Isobe A, Kawamoto T, Shikama N, Sasai K. Analysis of Correlation Between Breast Surface Position and Internal Organ Deformation Using Deep-Inspiration Breath Holding for Left-Sided Breast Irradiation. Int J Radiat Oncol Biol Phys 2020. [DOI: 10.1016/j.ijrobp.2020.07.687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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15
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Matsumoto K, Usui K, Akamatsu N, Shishido A. Nonlinear Molecular Reorientation of Polymer-Stabilized Dye-Doped Liquid Crystals by Depolarized Laser Beam. J PHOTOPOLYM SCI TEC 2020. [DOI: 10.2494/photopolymer.33.77] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Kohsuke Matsumoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
| | - Koji Usui
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
| | - Norihisa Akamatsu
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
| | - Atsushi Shishido
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology
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Mizuiri S, Nishizawa Y, Yamashita K, Ono K, Usui K, Arita M, Naito T, Doi S, Masaki T, Shigemoto K. Relationship of serum magnesium level with body composition and survival in hemodialysis patients. Hemodial Int 2019; 24:99-107. [DOI: 10.1111/hdi.12797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Revised: 10/12/2019] [Accepted: 10/15/2019] [Indexed: 01/06/2023]
Affiliation(s)
- Sonoo Mizuiri
- Division of NephrologyIchiyokai Harada Byoin, 7‐10 Kairoyama‐cho, Saeki‐ku Hiroshima 731‐5134 Japan
| | - Yoshiko Nishizawa
- Division of NephrologyIchiyokai Harada Byoin, 7‐10 Kairoyama‐cho, Saeki‐ku Hiroshima 731‐5134 Japan
| | - Kazuomi Yamashita
- Division of NephrologyIchiyokai Harada Byoin, 7‐10 Kairoyama‐cho, Saeki‐ku Hiroshima 731‐5134 Japan
| | - Kyoka Ono
- Division of NephrologyIchiyokai Harada Byoin, 7‐10 Kairoyama‐cho, Saeki‐ku Hiroshima 731‐5134 Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic10‐3 Asahien, Saeki‐ku Hiroshima 731‐5133 Japan
| | - Michiko Arita
- Iciyokai East Clinic1‐3‐53 Danbaraminami Minami‐ku Hiroshima 732‐0814 Japan
| | - Takayuki Naito
- Ichiyokai Yokogawa Clinic2‐7‐9 Yokogawacho Nishi‐ku Hiroshima 733‐0011 Japan
| | - Shigehiro Doi
- Department of NephrologyHiroshima University, 1‐2‐3 Kasumi Minami‐ku Hiroshima 734‐8551 Japan
| | - Takao Masaki
- Department of NephrologyHiroshima University, 1‐2‐3 Kasumi Minami‐ku Hiroshima 734‐8551 Japan
| | - Kenichiro Shigemoto
- Division of NephrologyIchiyokai Harada Byoin, 7‐10 Kairoyama‐cho, Saeki‐ku Hiroshima 731‐5134 Japan
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Baba K, Tanaka H, Fujita Y, Nakamura A, Kikuchi E, Kawai Y, Harada T, Watanabe N, Yokouchi H, Usui K, Saito R, Watanabe H, Masuda T, Fukuhara T, Kudo K, Honda R, Oizimi S, Maemondo M, Inoue A, Morikawa N. A randomized, phase II study comparing irinotecan versus amrubicin as maintenance therapy after first-line induction therapy for extensive disease small cell lung cancer (HOT1401/NJLCG1401). Ann Oncol 2019. [DOI: 10.1093/annonc/mdz437.046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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18
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Mizuiri S, Nishizawa Y, Yamashita K, Ono K, Naito T, Tanji C, Usui K, Doi S, Masaki T, Shigemoto K. Relationship of matrix Gla protein and vitamin K with vascular calcification in hemodialysis patients. Ren Fail 2019; 41:770-777. [PMID: 31538831 PMCID: PMC7011966 DOI: 10.1080/0886022x.2019.1650065] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 07/23/2019] [Accepted: 07/23/2019] [Indexed: 01/07/2023] Open
Abstract
Objective: This study evaluated associations of serum matrix Gla protein (MGP), plasma vitamin K1, and plasma vitamin K2 with coronary artery calcium score (CACS) and cardiovascular disease (CVD) in maintenance hemodialysis (MHD) patients. Methods: Subjects comprised 112 MHD patients aged 30-60 years and 40 age-matched healthy subjects. Total MGP, vitamin K1, vitamin K2, and lipid profile were examined in all subjects; other clinical data, medication use, and CACS were assessed only in MHD patients. Determinants of MGP in all subjects were identified by regression analysis. Factors associated with CACS and CVD in MHD patients were identified by regression analysis and logistic analysis, respectively. Results: Lower plasma levels of vitamin K1 corrected for triglycerides [0.39 (0.24-0.70) vs. 0.77 (0.48-1.34) ng/mg, p < 0.001], higher frequency of plasma vitamin K2 ≤ 0.05 ng/ml (p = 0.23), and higher serum total MGP (288.4 ± 44.2 vs. 159.7 ± 40.6 ng/ml, p < 0.0001) were observed in MHD patients than in healthy controls. Total MGP level was significantly associated with levels of vitamin K1 corrected for triglycerides (p <0 .001) and vitamin K2 ≤ 0.05 ng/ml (p < 0.05) in all subjects. Total MGP level was significantly associated with presence of CVD (p <0 .05), but not CACS, in MHD patients. Conclusion: The end-stage renal disease on hemodialysis is a deficiency state of vitamin K. Total MGP was significantly higher in MHD patients compared to healthy subjects and total MGP was associated with the presence of CVD, but not CACS, in MHD patients.
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Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology, Ichiyokai Harada
Hospital, Hiroshima, Japan
| | | | | | - Kyoka Ono
- Division of Nephrology, Ichiyokai Harada
Hospital, Hiroshima, Japan
| | | | - Chie Tanji
- Ichiyokai Ichiyokai Clinic,
Hiroshima, Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic,
Hiroshima, Japan
| | - Shigehiro Doi
- Department of Nephrology, Hiroshima University
Hospital, Hiroshima, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University
Hospital, Hiroshima, Japan
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Usui K, Isobe A, Hara N, Kawamoto T, Oshima M, Shikama N, Sasai K. Clinical Evaluation of a Rotational Set-up Correction Device for Multiple Brain Metastases Using Single-Isocenter Stereotactic Radiation Therapy. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.727] [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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20
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Mizuiri S, Nishizawa Y, Yamashita K, Naito T, Ono K, Tanji C, Usui K, Doi S, Masaki T, Shigemoto K. Hypomagnesemia is not an independent risk factor for mortality in Japanese maintenance hemodialysis patients. Int Urol Nephrol 2019; 51:1043-1052. [PMID: 30977017 PMCID: PMC6543028 DOI: 10.1007/s11255-019-02073-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 01/03/2019] [Indexed: 11/25/2022]
Abstract
PURPOSE It is unclear whether hypomagnesemia is an independent risk factor or innocent bystander for mortality in maintenance hemodialysis (MHD) patients. Thus, we studied associations between hypomagnesemia and all-cause as well as cardiovascular (CV) mortality in MHD patients. METHODS Baseline clinical characteristics and coronary artery calcium score (CACS) of 353 Japanese MHD patients were reviewed. Three-year survival rate and mortality risk factors were assessed. RESULTS Median (interquartile range) age, dialysis vintage, serum magnesium (Mg), serum albumin and CACS of the subjects were 68 (60-78) years, 75 (32-151) months, 2.4 (2.2-2.7) mg/dl, 3.6 (3.3-3.8) g/dl, and 1181 (278-3190), respectively. During the 3-year period, 91 patients died. Kaplan-Meier overall 3-year survival rates were 59.0% in in patients with Mg < 2.4 mg/dl (n = 136) and 82.3% in patients with Mg ≥ 2.4 mg/dl (n = 217), (P < 0.0001). In Cox regression models not incorporating serum albumin, Mg < 2.4 mg/dl was significantly associated with 3-year all-cause death, independent of age, dialysis vintage, average ultrafiltration, Log (CACS + 1), warfarin use, serum potassium, high-sensitivity C-reactive protein (hsCRP), phosphate, uric acid, and intact parathyroid hormone [Hazard ratio (HR) 95% confidence interval (CI): 2.82 (1.31-6.29), P = 0.0078], and CV death, independent of age, dialysis vintage, Log (CACS + 1), warfarin use, serum hsCRP, and uric acid [HR (95% CI): 4.47 (1.45-16.76), P = 0.0086]. Nevertheless, associations of Mg < 2.4 mg/dl with all-cause and CV mortality were all absent in models that included serum albumin. CONCLUSIONS Hypomagnesemia is not an independent risk factor for mortality but is associated with malnutrition in MHD patients.
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Affiliation(s)
- Sonoo Mizuiri
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, 731-5134, Japan.
| | - Yoshiko Nishizawa
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, 731-5134, Japan
| | - Kazuomi Yamashita
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, 731-5134, Japan
| | - Takayuki Naito
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, 731-5134, Japan
| | - Kyoka Ono
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, 731-5134, Japan
| | - Chie Tanji
- Ichiyokai Ichiyokai Clinic, 10-3 Asahien, Saeki-ku, Hiroshima, 731-5133, Japan
| | - Koji Usui
- Ichiyokai Ichiyokai Clinic, 10-3 Asahien, Saeki-ku, Hiroshima, 731-5133, Japan
| | - Shigehiro Doi
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi Minami-ku, Hiroshima, 734-8551, Japan
| | - Takao Masaki
- Department of Nephrology, Hiroshima University Hospital, 1-2-3 Kasumi Minami-ku, Hiroshima, 734-8551, Japan
| | - Kenichiro Shigemoto
- Division of Nephrology, Ichiyokai Harada Hospital, 7-10 Kairoyama-cho, Saeki-ku, Hiroshima, 731-5134, Japan
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aiba T, Minegishi Y, Yamaguchi O, Kuyama S, Watanabe S, Usui K, Mori M, Hataji O, Nukiwa T, Morita S, Kobayashi K, Gemma A. A phase II study of first-line afatinib for patients aged 75 or older with EGFR mutation-positive advanced non-small cell lung cancer: North East Japan study group trial NEJ027. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.067] [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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Usui K, Yokoyama T, Kisohara A, Mori Y, Takeda Y, Ishida H, Kusano N, Kishi K, Katsushima U, Kuwako T, Aono H, Shikama Y, Minato K, Matsushima H, Uemura K, Ohashi Y, Kunitoh H. The plasma ctDNA monitoring during epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI) treatment in patients with EGFR mutant non-small cell lung cancer (JP-CLEAR trial). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy292.046] [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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Usui K, Otsuka A, Nakashima C, Katsumoto R, Konishi N, Hayashi M, Kabashima K. 674 TRPV1 positive peripheral sensory nerves are required for prompt skin barrier repair. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.683] [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: 10/17/2022]
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Kondo T, Kuroda S, Usui K, Mori K, Asai T, Takeshima T, Kawahara T, Hamanoue H, Uemura H, Yumura Y. A case of a rare variant of Klinefelter syndrome, 47,XY,i(X)(q10). Andrologia 2018; 50:e13024. [PMID: 29665107 DOI: 10.1111/and.13024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2018] [Indexed: 11/28/2022] Open
Abstract
Klinefelter syndrome is a condition in which a male patient has one Y chromosome and one or more extra X chromosomes. It is the most common sex chromosome disorder. Klinefelter syndrome is distinguished by many clinical features, such as infertility, high gonadotropin and low testosterone levels, increased height, and sparse body and facial hair. We report the case of a 32-year-old man who visited our hospital complaining of male infertility. Semen analysis showed azoospermia, and chromosomal analysis revealed a 47,XY,i(X)(q10) karyotype, which is a rare variant of Klinefelter syndrome. No spermatozoon was found on microdissection testicular sperm extraction, and the testis biopsy histology showed only Sertoli cells and hyalinised seminiferous tubules. 47,XY, i(X)(q10) has an additional isochromosome made of the long arm of the X chromosome, which shares some features of classical Klinefelter syndrome in many aspects, but patients are usually shorter than average height and have normal intelligence. In addition, to the best of our knowledge, no successful sperm extractions from 47,XY, i(X)(q10) patients were reported in the literature. The reports of patients who have undergone microdissection testicular sperm extraction are very rare. Further reports and studies of this chromosomal abnormality are needed.
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Affiliation(s)
- T Kondo
- Department of Urology, Reproduction Center, Yokohama City University Medical Center, Yokohama, Japan
| | - S Kuroda
- Department of Urology, Reproduction Center, Yokohama City University Medical Center, Yokohama, Japan
| | - K Usui
- Department of Urology, Reproduction Center, Yokohama City University Medical Center, Yokohama, Japan
| | - K Mori
- Department of Urology, Reproduction Center, Yokohama City University Medical Center, Yokohama, Japan
| | - T Asai
- Department of Urology, Reproduction Center, Yokohama City University Medical Center, Yokohama, Japan
| | - T Takeshima
- Department of Urology, Reproduction Center, Yokohama City University Medical Center, Yokohama, Japan
| | - T Kawahara
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - H Hamanoue
- Department of Clinical Genetics, Yokohama City University Hospital, Yokohama, Japan
| | - H Uemura
- Department of Urology and Renal Transplantation, Yokohama City University Medical Center, Yokohama, Japan
| | - Y Yumura
- Department of Urology, Reproduction Center, Yokohama City University Medical Center, Yokohama, Japan
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Naito T, Yorioka N, Kyuden Y, Yamashita K, Ueda C, Usui K, Shigemoto K, Harada S, Yamakido M. A Case of Antiphospholipid Antibody Syndrome Diagnosed after Thrombosis of an Arteriovenous Shunt. Int J Artif Organs 2018. [DOI: 10.1177/039139889902200804] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
A 32-year-old male dialysis patient with lupus nephritis was admitted because of shunt obstruction. The arteriovenous fistula was reconstructed, but obstruction recurred twice within several hours after surgery. A high blood level of anticardiolipin β2-glycoprotein I antibody suggested that shunt obstruction was caused by a thrombotic tendency related to the antiphospholipid antibody syndrome. Accordingly, for the third shunt procedure, antiplatelet therapy (which had been commenced for systemic lupus erythematosus) was combined with dalteparin sodium from before surgery and warfarin was added postoperatively. This regimen prevented shunt obstruction. In conclusion, hemodialysis patients who suffer repeated shunt obstruction should be examined for antiphospholipid antibody syndrome.
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Affiliation(s)
- T. Naito
- Ichiyokai Harada Hospital, Hiroshima City - Japan
| | - N. Yorioka
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima City - Japan
| | - Y. Kyuden
- Ichiyokai Harada Hospital, Hiroshima City - Japan
| | - K. Yamashita
- Ichiyokai Harada Hospital, Hiroshima City - Japan
| | - C. Ueda
- Ichiyokai Harada Hospital, Hiroshima City - Japan
| | - K. Usui
- Ichiyokai Harada Hospital, Hiroshima City - Japan
| | - K. Shigemoto
- Ichiyokai Harada Hospital, Hiroshima City - Japan
| | - S. Harada
- Ichiyokai Harada Hospital, Hiroshima City - Japan
| | - M. Yamakido
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima City - Japan
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Taniguchi Y, Yorioka N, Okushin S, Oda H, Usui K, Yamakido M. Usefulness of Immunoadsorption Therapy for Systemic Lupus Erythematosus Associated with Transverse Myelitis. A Case Report. Int J Artif Organs 2018. [DOI: 10.1177/039139889501801209] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Transverse myelitis (TM) is a very rare complication of systemic lupus erythematosus (SLE) and its prognosis is poor. It therefore needs to be treated aggressively. We describe a patient suffering from SLE associated with TM, who responded well to a combination of immunoadsorption therapy and steroid mini-pulse therapy. His serum interleukin 6 levels as well as clinical indicators fell to normal after this treatment.
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Affiliation(s)
- Y. Taniguchi
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - N. Yorioka
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - S. Okushin
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - H. Oda
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
| | - K. Usui
- Ichiyokai Harada Hospital, Hiroshima - Japan
| | - M. Yamakido
- Second Department of Internal Medicine, Hiroshima University School of Medicine, Hiroshima
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27
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Taniguchi Y, Saihara A, Matsumoto Y, Furukawa R, Ohara S, Sato A, Hojou M, Usui K. P2.03-017 Clinical Features and Treatment with Afatinib in Patients with Squamous Cell Lung Cancer with Sensitive EGFR Mutations. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1268] [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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28
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Usui K, Mori H, Tachi T, Matsumura T, Mori K, Takeda A, Noguchi Y, Yoshimura T, Teramachi H. A rapid method to screen poisoning causative agents in an acute care hospital in Japan. J Clin Pharm Ther 2017; 42:454-460. [DOI: 10.1111/jcpt.12532] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 03/27/2017] [Indexed: 11/30/2022]
Affiliation(s)
- K. Usui
- Laboratory of Clinical Pharmacy; Gifu Pharmaceutical University; Gifu Japan
| | - H. Mori
- Department of Pharmacy; Oogaki Municipal Hospital; Gifu Japan
| | - T. Tachi
- Laboratory of Clinical Pharmacy; Gifu Pharmaceutical University; Gifu Japan
| | - T. Matsumura
- Department of Pharmacy; Oogaki Municipal Hospital; Gifu Japan
| | - K. Mori
- Department of Pharmacy; Oogaki Municipal Hospital; Gifu Japan
| | - A. Takeda
- Department of Pharmacy; Oogaki Municipal Hospital; Gifu Japan
| | - Y. Noguchi
- Laboratory of Clinical Pharmacy; Gifu Pharmaceutical University; Gifu Japan
| | - T. Yoshimura
- Department of Pharmacy; Oogaki Municipal Hospital; Gifu Japan
| | - H. Teramachi
- Laboratory of Clinical Pharmacy; Gifu Pharmaceutical University; Gifu Japan
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Kawai M, Akino N, Ebisawa N, Grisham L, Hanada M, Honda A, Inoue T, Kazawa M, Kikuchi K, Kuriyama M, Kusanagi N, Mogaki K, Noto K, Ohga T, Ooshima K, Tanai Y, Umeda N, Usui K, Yamamoto T, Yamazaki H, Watanabe K. Progress of Negative Ion Source Improvement in N-NBI for JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst03-a387] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Kawai
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - N. Akino
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - N. Ebisawa
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - L. Grisham
- Princeton Plasma Physics Laboratory, Princeton, NJ, 08543, U.S.A
| | - M. Hanada
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - A. Honda
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - T. Inoue
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - M. Kazawa
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - K. Kikuchi
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - M. Kuriyama
- Vienna Office, Japan Atomic Energy Research Institute, Baumannstrasse 4-2-13, A1030, Wien, Austria 81-29-270-7453
| | - N. Kusanagi
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - K. Mogaki
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - K. Noto
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - T. Ohga
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - K. Ooshima
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - Y. Tanai
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - N. Umeda
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - K. Usui
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - T. Yamamoto
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - H. Yamazaki
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
| | - K. Watanabe
- Naka Fusion Research Establishment, Japan Atomic Energy Research Institute, Mukouyama, Naka-machi, Ibaraki-ken, 311-0193, Japan
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Kuriyama M, Akino N, Ebisawa N, Honda A, Itoh T, Kawai M, Mogaki K, Ohga T, Oohara H, Umeda N, Usui K, Yamamoto M, Yamamoto T, Matsuoka M. Operation and Development on the Positive-Ion Based Neutral Beam Injection System for JT-60 and JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a238] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Kuriyama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - N. Akino
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - N. Ebisawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - A. Honda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - T. Itoh
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - M. Kawai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - K. Mogaki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - T. Ohga
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - H. Oohara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - N. Umeda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - K. Usui
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - M. Yamamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - T. Yamamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment 801-1 Mukohyama, Naka-machi, Naka-gun, Ibaraki-ken, 311-0193 Japan
| | - M. Matsuoka
- University of Mie, Department of Technology Education 1515 Kamihama-cho, Tsu-shi, Japan
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31
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Akino N, Ebisawa N, Honda A, Ikeda Y, Kawai M, Kazawa M, Mogaki K, Ohga T, Umeda N, Usui K, Yamamoto T, Grisham L. Long Pulse Operation on NBI Systems for JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst05-a777] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- N. Akino
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - N. Ebisawa
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - A. Honda
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Ikeda
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Kawai
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Kazawa
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Mogaki
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Ohga
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - N. Umeda
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Usui
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Yamamoto
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - L. Grisham
- Japan Atomic Energy Resaerch Institute, Naka Fusion Research Establishment, Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
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32
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Kuriyama M, Akino N, Ebisawa N, Grisham L, Honda A, Itoh T, Kawai M, Kazawa M, Mogaki K, Ohara Y, Ohga T, Okumura Y, Oohara H, Umeda N, Usui K, Watanabe K, Yamamoto M, Yamamoto T. Operation and Development of the 500-keV Negative-Ion-Based Neutral Beam Injection System for JT-60U. Fusion Science and Technology 2017. [DOI: 10.13182/fst02-a237] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- M. Kuriyama
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - N. Akino
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - N. Ebisawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - L. Grisham
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - A. Honda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Itoh
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Kawai
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Kazawa
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Mogaki
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Ohara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Ohga
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - Y. Okumura
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - H. Oohara
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - N. Umeda
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Usui
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - K. Watanabe
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - M. Yamamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
| | - T. Yamamoto
- Japan Atomic Energy Research Institute, Naka Fusion Research Establishment, 801-1 Mukohyama Naka-machi, Naka-gun, Ibaraki-ken 311-0193, Japan
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Usui K, Katayama E, Wang J, Hisano K, Akamatsu N, Shishido A. Effect of surface treatment on molecular reorientation of polymer-stabilized liquid crystals doped with oligothiophene. Polym J 2016. [DOI: 10.1038/pj.2016.102] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Usui K, Inoue T, Kurokawa C, Sugimoto S, Sasai K, Ogawa K. SU-F-J-70: Monte Carlo Study On a Cone-Beam Computed Tomography Using a Cross-Type Carbon Fiber Antiscatter Grid. Med Phys 2016. [DOI: 10.1118/1.4955978] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Rahman MA, Tanaka N, Usui K, Kawahara S. Role of Muscarinic Acetylcholine Receptors in Serial Feature-Positive Discrimination Task during Eyeblink Conditioning in Mice. PLoS One 2016; 11:e0147572. [PMID: 26808980 PMCID: PMC4725850 DOI: 10.1371/journal.pone.0147572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 01/05/2016] [Indexed: 11/19/2022] Open
Abstract
We investigated the role of muscarinic acetylcholine receptors (mAChRs) in eyeblink serial feature-positive discrimination learning in mice using the mAChR antagonist. A 2-s light cue was delivered 5 or 6 s before the presentation of a 350-ms tone paired with a 100-ms periorbital electrical shock (cued trial) but not before the tone-alone presentation (non-cued trial). Mice received 30 cued and 30 non-cued trials each day in a random order. We found that saline-injected control mice were successfully discriminating between cued and non-cued trials within a few days of conditioning. The mice responded more frequently to the tone in cued trials than in non-cued trials. Analysis of conditioned response (CR) dynamics revealed that the CR onset latency was shorter in cued trials than in non-cued trials, despite the CR peak amplitude not differing significantly between the two conditions. In contrast, scopolamine-injected mice developed an equal number of CRs with similar temporal patterns irrespective of the presence of the cue during the 7 days of conditioning, indicating in a failure to acquire conditional discrimination. In addition, the scopolamine administration to the control mice after they had successfully acquired discrimination did not impair the conditional discrimination and expression of pre-acquired CR. These results suggest that mAChRs may play a pivotal role in memory formation in the conditional brain state associated with the feature cue; however they are unlikely to be involved in the development of discrimination after conditional memory had formed in the serial feature-positive discrimination task during eyeblink conditioning.
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Affiliation(s)
- Md. Ashrafur Rahman
- Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama, 930–8555, Japan
| | - Norifumi Tanaka
- Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama, 930–8555, Japan
| | - Koji Usui
- Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama, 930–8555, Japan
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, 930–8555, Japan
| | - Shigenori Kawahara
- Graduate School of Innovative Life Science, University of Toyama, 3190 Gofuku, Toyama, 930–8555, Japan
- Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, 930–8555, Japan
- * E-mail:
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Tachi T, Yasuda M, Usui K, Umeda M, Nagaya K, Osawa T, Ichihashi A, Noguchi Y, Goto H, Kasahara S, Takahashi T, Goto C, Teramachi H. Risk factors for developing infusion reaction after rituximab administration in patients with B-cell non-Hodgkin's lymphoma. Pharmazie 2015; 70:674-677. [PMID: 26601425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Rituximab (RTX), a monoclonal antibody against CD20, is known to cause fewer side effects than conventional anti-cancer drugs; however, infusion reaction (IR), which is specific to monoclonal antibody therapy, is frequently triggered by RTX. Therefore, we designed this study to identify risk factors based on clinical test values for developing IR after RTX administration. Eighty-nine patients with B-cell non-Hodgkin's lymphoma who had received RTX for the first time between February 2010 and March 2013, at the Gifu Municipal Hospital were enrolled as subjects. Analysis of data was conducted for 87 patients, after excluding patients whose data were missing. Univariate analysis showed significant differences in the number of patients exhibiting a soluble interleukin-2 receptor (sLL-2R) level > 2,000 U/L and hemoglobin (Hb) < lower standard limit (LSL) between the IR and non-IR groups. Multivariate analysis showed significant differences with respect to slL-2R > 2,000 U/L [odds ratio (OR), 4.463; 95% confidence interval (Cl), 1.262-15.779; P = 0.020], Hb < LSL [OR, 3.568; 95% CI, 1.071-11.890; P = 0.038], and steroid administration [OR, 0.284; 95% Cl, 0.094-0.852; P = 0.025]. Our findings show that sIL-2R > 2,000 U/L, Hb < LSL, and a lack of steroid premedication are risk factors for developing IR following RTX treatment.
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Tsukita Y, Morikawa N, Sugawara S, Maemondo M, Harada T, Harada M, Inoue A, Kawashima Y, Fujita Y, Kato T, Yokouchi H, Watanabe H, Usui K, Suzuki T, Oizumi S, Nagai H, Kanbe M, Nukiwa T. Final Results of a Randomized Phase 2 Study Comparing Carboplatin Plus Irinotecan (Ci) Versus Carboplatin Plus Amrubicin (Ca) for Extensive Disease Small-Cell Lung Cancer: Njlcg0901. Ann Oncol 2014. [DOI: 10.1093/annonc/mdu355.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Sugimoto S, Utsunomiya S, Ebe K, Inoue T, Kurokawa C, Usui K, Sasai K. SU-E-T-465: Dose Calculation Method for Dynamic Tumor Tracking Using a Gimbal-Mounted Linac. Med Phys 2014. [DOI: 10.1118/1.4888798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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39
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Usui K, Hiroki T, Fujita K, Kabuki S, Kunieda E, Ogawa K. A Study of 4D CBCT Reconstruction Using Detection of the Target Position From 2D Projection Images. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1861] [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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40
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Demura Y, Maemondo M, Ishii Y, Okudera K, Takamura K, Kobayashi K, Morikawa N, Gemma A, Ishimoto O, Harada M, Miura S, Fujita Y, Usui K, Saijo Y. A Phase II Study of Erlotinib Monotherpay in Previously Treated Advanced Non-Small Cell Lung Cancer (NSCLC) Without EGFR Gene Mutation who have Never/Light Smoking History: NEJ006/TCOG0903. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32316-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Oizumi S, Inoue A, Sakakibara T, Asahina H, Sugawara S, Maemondo M, Okudera K, Suzuki T, Usui K, Harada M, Morikawa N, Hasegawa Y, Ishimoto O, Nukiwa T. Phase II Study of Amrubicin (AMR) Combined with Carboplatin (CBDCA) for Refractory Relapsed Small Cell Lung Cancer (SCLC): North Japan Lung Cancer Group 0802. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32274-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Bae Y, Park Y, Kim J, Han W, Kwak S, Chang Y, Park H, Song N, Yang H, Yoon S, Jeon Y, Hahn S, Lee S, Ko W, England A, Kim W, Oh Y, Kwak J, Kwon M, Chang D, Jeong S, Kim T, Oh B, Jin J, In S, Lee K, Chang D, Watanabe K, Dairaku M, Tobari H, Kashiwagi M, Hanada M, Inoue T, Ikeda Y, Kawai M, Komata M, Mogaki K, Usui K, Yamamoto T, Matsuoka M, Nagaoka K, Grisham L. Commissioning of the first KSTAR neutral beam injection system and beam experiments. Fusion Engineering and Design 2012. [DOI: 10.1016/j.fusengdes.2012.05.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Usui K, Ogawa K, Kunieda E. SU-E-J-100: Feasibility of Dose Calculation Using Combined Information of Cone-Beam and Multi-Slice CT Images. Med Phys 2012; 39:3675. [DOI: 10.1118/1.4734936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Ohta Y, Nishi S, Haga T, Tsubouchi T, Hasegawa R, Konishi M, Nagano Y, Tsuruwaka Y, Shimane Y, Mori K, Usui K, Suda E, Tsutsui K, Nishimoto A, Fujiwara Y, Maruyama T, Hatada Y. Screening and Phylogenetic Analysis of Deep-Sea Bacteria Capable of Metabolizing Lignin-Derived Aromatic Compounds. ACTA ACUST UNITED AC 2012. [DOI: 10.4236/ojms.2012.24021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Ochiai M, Nakashima A, Takasugi N, Kiribayashi K, Kawai T, Usui K, Shigemoto K, Hamaguchi N, Kohno N, Yorioka N. Vitamin K 2 Alters Bone Metabolism Markers in Hemodialysis Patients with a Low Serum Parathyroid Hormone Level. ACTA ACUST UNITED AC 2011; 117:c15-9. [DOI: 10.1159/000319642] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2010] [Accepted: 03/05/2010] [Indexed: 11/19/2022]
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46
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Thornhill A, Wheat S, Al-Shenar S, Atalla N, Menabawey M, Summers M, Giles J, Vidal C, Alama P, Bosch E, Zuzuarregui JL, Pellicer A, Nelen WLDM, den Breejen EME, Schol SFE, Kremer JAM, Hermens RPMG, Nagai R, Fukunaga N, Kitasaka H, Yoshimura T, Itoi F, Tamura F, Kitamura K, Hasegawa N, Kato M, Nakayama K, Honma H, Oguri H, Sano M, Hashiba Y, Asada Y, den Breejen EME, Hermens RPMG, Galama WH, Willemsen WN, Nelen WLDM, Kremer JAM, Lashwood A, Solomonides A, Olive M, Harton G, Patch C, Flinter F, Mendoza R, Perez S, de los Santos MJ, Larreategui Z, Exposito A, Aparicio MV, Martinez Indart L, Matorras R, Sato Y, Nakamura Y, Sakamoto E, Tasaka A, Usui K, Hattori H, Ito Y, Nakajo Y, Doshida M, Kyono K, Koike A, Haruki A, Horiuchi R, Sugihara K, Fukuda A, Morimoto Y, Cambiaghi A, Leao R, Castellotti D, Nascimento P, Molina Gonzalez I, Clavero Gilabert A, Gonzalvo Lopez MC, Rosales Martinez A, Martinez Navarro L, Mozas Moreno J, Castilla Alcala JA, Fleischer K, Muller AF, Hohmann FP, de Jong FH, Eijkemans MJC, Fauser BC, Laven JSE, Bonduelle M, Van Landuyt L, Stoop D, Van de Velde H, Verheyen G, Haentjens P, Desmyttere S, Carlos RV, Setti AS, Braga DPAF, Figueira RCS, Iaconelli Jr. A, Borges Jr. E, Bariani F, Vespasiano F, Puoti F, Fehily D, Porta E, Nanni Costa A, Zhang Y, Cui Y, Wang L, Zhao H, Zhao W, Wang J, Gao L, Sha J, Zhou Z, Liu J, Liu W, Li XF, Xi WY, Tan L, Fan LQ, Lu GX, Bungum M, Bungum L, Lynch KF, Wedlund L, Humaidan P, Giwercman A, Godunova V, Kaulins T, Godunovs K, Jonina I, Pozilenkova N, Subnikovs N, Trejs G, Lejins V, Mohova M, Rumjanceva I, Arajs M. POSTER VIEWING SESSION - QUALITY AND SAFETY OF ART THERAPIES. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.88] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kinoshita M, Mitsueda-Ono T, Hitomi T, Taki J, Usui K, Matsuhashi M, Matsumoto R, Mikuni N, Fukuyama H, Takahashi R, Ikeda A. P16-9 Change in cortical fast activities after high frequency electric cortical stimulation in a patient with cortical dysplasia and intractable epilepsy. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60816-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kyono K, Doshida M, Toya M, Usui K, Ishikawa T, Sankai T, Owada N. 27 NEW FREEZING METHOD BY PULSED MAGNETIC FIELD EFFECTS; WHOLE OVARIES OF CYNOMOLGUS MONKEYS AND RABBITS. Reprod Biomed Online 2010. [DOI: 10.1016/s1472-6483(10)62445-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Usui N, Terada K, Baba K, Matsuda K, Nakamura F, Usui K, Tottori T, Umeoka S, Fujitani S, Mihara T, Inoue Y. P6-4 Very high frequency oscillations (over 1000 Hz) in human epilepsy. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60552-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Usui K. S39-6 Basal temporal language area. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)60247-7] [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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