134,988 results on '"Mitsuru"'
Search Results
52. Early Quality of Recovery after Elective Cardiothoracic and Aortic Surgeries in Adult Patients: A Pilot Report
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Ayu Ishida, Mitsuru Ida, Yuki Kinugasa, Hitomi Nakatani, Kayo Uyama, and Masahiko Kawaguchi
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aorta thoracic ,cardiac surgical procedures ,patient-centred outcome ,postoperative outcome ,quality of recovery ,Anesthesiology ,RD78.3-87.3 ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background: Patient-centered outcome measures should be evaluated postoperatively as the recovery after surgery varies between patients. We aimed to evaluate the feasibility, reliability, and trajectory of the quality of recovery-15 (QoR-15) in patients undergoing cardiothoracic and aortic surgeries. Materials and Methods: This retrospective study included adult patients who underwent elective cardiothoracic and aortic surgeries. The primary outcome was the QoR-15, with a minimal clinically important difference of 6.8, assessed on postoperative days (POD) 2, 4, and 7. The final analysis included patients with at least one valid outcome. Feasibility and reliability were assessed by the successful completion rate on each POD and using Cronbach’s alpha of the QoR-15 on POD 4. A linear mixed model was used to evaluate the trajectory of the postoperative QoR-15 scores. Results: Of the 36 eligible patients, 30 with a mean age of 70 years were included in the final analysis. The successful completion rates on POD 2, 4, and 7 were 72.7%, 87.8%, and 87.8%, respectively. The mean QoR-15 scores on POD 2, 4, and 7 were 89.9, 98.0, and 108.3, respectively. The QoR-15 scores on POD 2 and 4 were not statistically different (P = 0.06) but were clinically significant. The QoR-15 score on POD 7 was statically (P < 0.001) and clinically higher than the QoR-15 score on POD 2. Cronbach’s alpha for the QoR-15 score measured on POD 4 was 0.85. Conclusion: The QoR-15 is a feasible and valid measurement after elective cardiothoracic surgery, which increases significantly over time after surgery.
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- 2024
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53. Adolescent Idiopathic Scoliosis: Is the Feasible Option of Minimally Invasive Surgery using Posterior Approach?
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Hong Jin Kim, Lawrence G. Lenke, Javier Pizones, René Castelein, Per D. Trobisch, Mitsuru Yagi, Michael P. Kelly, and Dong-Gune Chang
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adolescent idiopathic scoliosis ,minimally invasive scoliosis surgery ,conventional open scoliosis surgery ,systematic review ,meta-analysis ,Medicine - Abstract
The purpose of this systematic review and meta-analysis is to perform a systematic review and meta-analysis of previous studies on minimally invasive scoliosis surgery (MISS) in adolescents with idiopathic scoliosis (AIS). Some data on MISS in AIS compared with conventional open scoliosis surgery (COSS) are conflicting. A systematic literature search was conducted in Medline, Embase, and Cochrane Library, including studies reporting outcomes for MISS in AIS. The meta-analysis compared the operative, radiological, and clinical outcomes and complications between MISS and COSS in patients with AIS. Of the 208 records identified, 15 nonrandomized studies with 1,369 patients (reviews and case reports are excluded) were included in this systematic review and meta-analysis. The mean scale was 6.1, and eight of the 15 included studies showed satisfactory quality using the Newcastle-Ottawa scale. For operative outcomes, MISS had significant benefits in terms of estimated blood loss (standard mean difference [SMD], −1.87; 95% confidence interval [CI], −2.94 to −0.91) and hospitalization days (SMD, −2.99; 95% CI, −4.45 to −1.53) compared with COSS. However, COSS showed significantly favorable outcomes for operative times (SMD, 1.71; 95% CI, 0.92–2.51). No significant differences were observed in radiological outcomes, including Cobb’s angle of the main curve and thoracic kyphosis. For clinical outcomes, MISS showed significant benefits on the visual analog scale score (SMD, −0.91; 95% CI, −1.36 to −0.47). The overall complication rates of MISS were similar to those of COSS (SMD, 0.96; 95% CI, 0.61–1.52). MISS using the posterior approach provides equivalent radiological and clinical outcomes and complication rates compared with COSS. Considering the lower estimated blood loss, shorter hospitalization days, and longer operative times in MISS, COSS is still the mainstay of surgical treatment in AIS; however, MISS using the posterior approach is also one of the surgical options of choice in the case of moderate AIS.
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- 2024
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54. Polydopamine-Coated Solid Silica Nanoparticles Encapsulating IR-783 Dyes: Synthesis and NIR Fluorescent Cell Imaging
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Yoshio Nakahara, Haruki Nakabayashi, Jun Miyazaki, Mitsuru Watanabe, Toshiyuki Tamai, and Setsuko Yajima
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Chemistry ,QD1-999 - Published
- 2024
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55. Guanfacine poisoning resulting in transient ST-segment elevation: a case report
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Ichiro Hirayama, Yoshito Kamijo, Hiroko Abe, Minaho Nonaka, Tetsuhiro Yano, Mitsuru Ishii, and Yoshiteru Tominaga
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Attention-deficit hyperactivity disorder ,Guanfacine ,Poisoning ,ST-segment elevation ,Medical emergencies. Critical care. Intensive care. First aid ,RC86-88.9 - Abstract
Abstract Background Guanfacine is an alpha-2 adrenergic agonist that decreases norepinephrine release and sympathetic outflow. With the increased use of guanfacine for attention-deficit hyperactivity disorder (ADHD), reports of guanfacine poisoning have also risen. Case presentation A 15-year-old male (height: 170 cm, weight: 48 kg), who was taking 2 mg/day of guanfacine for ADHD, was brought to our emergency department after ingesting 40 tablets of guanfacine due to poor exam results. He presented with impaired consciousness and sinus bradycardia on an electrocardiogram (ECG), leading to diagnosis of guanfacine poisoning. Gastric lavage (5 L) was performed, and activated charcoal was administered. Although his consciousness gradually recovered, he developed ST-segment elevation on the ECG. Despite the absence of chest pain and elevated myocardial enzymes, coronary artery stenosis was not observed on coronary artery computed tomography. As his blood guanfacine level decreased, his ECG returned to normal. Conclusions This case highlights the need for careful monitoring of guanfacine poisoning patients due to the potential for various cardiovascular events.
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- 2024
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56. Gender differences in spinal mobility during postural changes: a detailed analysis using upright CT
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Ryo Mizukoshi, Mitsuru Yagi, Yoshitake Yamada, Yoichi Yokoyama, Minoru Yamada, Kota Watanabe, Masaya Nakamura, Takeo Nagura, and Masahiro Jinzaki
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Gender differences ,Spinal mobility ,Postural changes ,Upright CT ,Lumbar alignment ,Medicine ,Science - Abstract
Abstract Lumbar spinal alignment is crucial for spine biomechanics and is linked to various spinal pathologies. However, limited research has explored gender-specific differences using CT scans. The objective was to evaluate and compare lumbar spinal alignment between standing and sitting CT in healthy individuals, focusing on gender differences. 24 young and 25 elderly males (M) and females (F) underwent standing and sitting CT scans to assess lumbar spinal alignment. Parameters measured and compared between genders included lumbar lordosis (LL), sacral slope (SS), pelvic tilt (PT), pelvic incidence (PI), lordotic angle (LA), foraminal height (FH), and bony boundary area (BBA). Females showed significantly larger changes in SS and PT when transitioning from standing to sitting (p = .044, p = .038). A notable gender difference was also observed in the L4-S LA among the elderly, with females showing a significantly larger decrease in lordotic angle compared to males (− 14.1° vs. − 9.2°, p = .039*). Females consistently exhibited larger FH and BBA values, particularly in lower lumbar segments, which was more prominent in the elderly group (M vs. F: L4/5 BBA 80.1 mm2 [46.3, 97.8] vs. 109.7 mm2 [74.4, 121.3], p = .019 in sitting). These findings underline distinct gender-related variations in lumbar alignment and flexibility, with a focus on noteworthy changes in BBA and FH in females. Gender differences in lumbar spinal alignment were evident, with females displaying greater pelvic and sacral mobility. Considering gender-specific characteristics is crucial for assessing spinal alignment and understanding spinal pathologies. These findings contribute to our understanding of lumbar spinal alignment and have implications for gender-specific spinal conditions and treatments.
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- 2024
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57. Simple risk scoring using sinus rhythm electrocardiograms predicts the incidence of atrial fibrillation in the general population
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Hiroyuki Kamada, Shin Kawasoe, Takuro Kubozono, Yuichi Ninomiya, Kei Enokizono, Issei Yoshimoto, Yasuhisa Iriki, Yoshiyuki Ikeda, Masaaki Miyata, Hironori Miyahara, Koichi Tokushige, and Mitsuru Ohishi
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Medicine ,Science - Abstract
Abstract Atrial fibrillation (AF) is an arrhythmic disease. Prediction of AF development in healthy individuals is important before serious complications occur. We aimed to develop a risk prediction score for future AF using participants’ data, including electrocardiogram (ECG) measurements and information such as age and sex. We included 88,907 Japanese participants, aged 30–69 years, who were randomly assigned to derivation and validation cohorts in a ratio of 1:1. We performed multivariate logistic regression analysis and obtained the standardised beta coefficient of relevant factors and assigned scores to them. We created a score based on prognostic factors for AF to predict its occurrence after five years and applied it to validation cohorts to assess its reproducibility. The risk score ranged from 0 to 17, consisting of age, sex, PR prolongation, QT corrected for heart rate prolongation, left ventricular hypertrophy, premature atrial contraction, and left axis deviation. The area under the curve was 0.75 for the derivation cohort and 0.73 for the validation cohort. The incidence of new-onset AF reached over 2% at 10 points of the risk score in both cohorts. Thus, in this study, we showed the possibility of predicting new-onset AF using ECG findings and simple information.
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- 2024
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58. Large variation in carbon dioxide emissions from tropical peat swamp forests due to disturbances
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Takashi Hirano, Shinjiro Ohkubo, Masayuki Itoh, Hayato Tsuzuki, Ayaka Sakabe, Hidenori Takahashi, Kitso Kusin, and Mitsuru Osaki
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Geology ,QE1-996.5 ,Environmental sciences ,GE1-350 - Abstract
Abstract The huge carbon stock of tropical peat swamp forest (PSF) in Southeast Asia has been threatened by environmental disturbances due to quasi-periodic El Niño-Southern Oscillation (ENSO) droughts, biomass and peat burning, smoke haze, drainage, and deforestation. Carbon dioxide (CO2) emissions from such disturbances have not been well quantified because of insufficient field data. Therefore, we quantified the ecosystem-scale CO2 balance and examine the disturbance effects from a long-term field experiment for 12–15 years at three PSF sites with different degrees of degradation in Indonesia. Here, we show a drastic change of an undrained PSF from a CO2 sink to a source owing to the transient groundwater lowering by the droughts, a significant decrease in ecosystem photosynthesis due to the radiation attenuation by smoke haze in drought years, and long-lasting CO2 emissions through enhanced peat decomposition by drainage. The impact on CO2 emissions was greater from drainage than drought-induced disturbances.
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- 2024
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59. Monitoring ctDNA RAS Mutational Status in Metastatic Colorectal Cancer: A Trial Protocol of RAS-trace and RAS-trace-2 Studies
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Kozo Kataoka, Takeshi Yamada, Manabu Shiozawa, Naoto Takase, Kazuma Ito, Kentaro Yamazaki, Jun Watanabe, Toshihiro Kudo, Takeshi Suto, Toshihiko Matsumoto, Kohei Murata, Yusuke Suwa, Shogen Boku, Hisateru Yasui, Nobuhisa Matsuhashi, Atsuyuki Maeda, Kiichi Sugimoto, Yusuke Matsumoto, Mitsuru Yokota, Johannes Fredebohm, Keita Mori, and Masataka Ikeda
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colorectal cancer ,anti-egfr monoclonal antibody ,ras-trace ,ras-trace-2 ,ctdna ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Background: Spatial and temporal heterogeneities of RAS and other molecular genes should be considered in the treatment of metastatic colorectal cancer (mCRC) treated with anti-epidermal growth factor receptor (EGFR) monoclonal antibodies (mAbs); acquired RAS mutation is sometimes observed at disease progression of treatment with the anti-EGFR mAb. At the same time, discrepancy of RAS status from tissues and circulating tumor DNA (ctDNA) in the same patient is sometimes observed. Based on this, we commenced two observational studies to clarify these heterogeneities of RAS and BRAF in mCRC, using next generation sequencing from liquid biopsy. Methods/Design: RAS-trace study is an observational study to monitor ctDNA RAS/BRAF/PIK3CA status every 4-12 weeks using the Plasma-SeqSensei™ CRC RUO Kit (Sysmex Inostics GmbH) in mCRC with RAS/BRAF wild-type (wt) on tumor tissue. The primary endpoint was the time to the acquired RAS mutations. A total of 42 patients has been accrued. RAS-trace-2 study is also an observational study aimed at comparing the efficacy of the anti-EGFR mAb in ctDNA RAS/BRAF wt with ctDNA RAS or BRAF mutant mCRC patients, whose RAS/BRAF are wt in tumor tissue. The primary endpoint was progression-free survival in patients with ctDNA RAS/BRAF wt and RAS or BRAF mutant. A total of 240 patients will be accrued over 2 years. Discussion: These trials will help us understanding the clinical significance of spatial and temporal heterogeneities of RAS, BRAF and other genes, while optimizing the anti-EGFR mAb treatment strategies in mCRC.
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- 2024
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60. An integrated modeling approach for estimating monthly global rainfall erosivity
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Ayele A. Fenta, Atsushi Tsunekawa, Nigussie Haregeweyn, Hiroshi Yasuda, Mitsuru Tsubo, Pasquale Borrelli, Takayuki Kawai, Ashebir S. Belay, Kindiye Ebabu, Mulatu L. Berihun, Dagnenet Sultan, Tadesual A. Setargie, Abdelrazek Elnashar, Arfan Arshad, and Panos Panagos
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Medicine ,Science - Abstract
Abstract Modeling monthly rainfall erosivity is vital to the optimization of measures to control soil erosion. Rain gauge data combined with satellite observations can aid in enhancing rainfall erosivity estimations. Here, we presented a framework which utilized Geographically Weighted Regression approach to model global monthly rainfall erosivity. The framework integrates long-term (2001–2020) mean annual rainfall erosivity estimates from IMERG (Global Precipitation Measurement (GPM) mission’s Integrated Multi-satellitE Retrievals for GPM) with station data from GloREDa (Global Rainfall Erosivity Database, n = 3,286 stations). The merged mean annual rainfall erosivity was disaggregated into mean monthly values based on monthly rainfall erosivity fractions derived from the original IMERG data. Global mean monthly rainfall erosivity was distinctly seasonal; erosivity peaked at ~ 200 MJ mm ha−1 h−1 month−1 in June–August over the Northern Hemisphere and ~ 700 MJ mm ha−1 h−1 month−1 in December–February over the Southern Hemisphere, contributing to over 60% of the annual rainfall erosivity over large areas in each hemisphere. Rainfall erosivity was ~ 4 times higher during the most erosive months than the least erosive months (December–February and June–August in the Northern and Southern Hemisphere, respectively). The latitudinal distributions of monthly and seasonal rainfall erosivity were highly heterogeneous, with the tropics showing the greatest erosivity. The intra-annual variability of monthly rainfall erosivity was particularly high within 10–30° latitude in both hemispheres. The monthly rainfall erosivity maps can be used for improving spatiotemporal modeling of soil erosion and planning of soil conservation measures.
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- 2024
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61. Spontaneous Bony Union of Bilateral Pseudoarthrotic Lumbar Spondylolysis without Surgery: A Case Report
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Mitsuru Asukai, Tomohiro Banno, Yoshiji Suzuki, Daisuke Yamashita, Hideyuki Murata, and Yukihiro Matsuyama
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lumbar spondylolysis ,pseudoarthrosis bone healing ,spina bifida occulta ,Surgery ,RD1-811 - Published
- 2024
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62. Circulating TNF receptor levels are associated with estimated glomerular filtration rate even in healthy individuals with normal kidney function
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Tomohito Gohda, Maki Murakoshi, Terumi Shibata, Yusuke Suzuki, Hiroyuki Takemura, Koji Tsuchiya, Tomoki Okada, Mitsuru Wakita, Yuki Horiuchi, Yoko Tabe, and Nozomu Kamei
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TNF receptor ,Biomarker ,Diabetes ,eGFR ,Kidney function ,Healthy subject ,Medicine ,Science - Abstract
Abstract The association between serum tumor necrosis factor receptor (TNFRs: TNFR1, TNFR2) levels and estimated glomerular filtration rate (eGFR) observed in patients with diabetes has not been comprehensively tested in healthy subjects with normal kidney function. It also remains unclear whether TNFR levels differ by age and sex, and between healthy subjects and diabetics. We measured serum TNFR levels in 413 healthy subjects and 292 patients with type 2 diabetes. In healthy subjects, TNFR levels did not differ between men and women. Additionally, TNFR2, but not TNFR1, levels increased with age. In multivariate analysis, TNFR1 was associated only with cystatin C-based eGFR (eGFR-CysC), whereas TNFR2 was associated with systolic blood pressure in addition to eGFR-CysC. Both TNFRs were associated with lower eGFR (eGFR-Cys
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- 2024
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63. Influence of sex on sympathetic vasomotor outflow responses to passive leg raising in young individuals
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Keisho Katayama, Kana Shiozawa, Jordan B. Lee, Natsuki Seo, Haruna Kondo, Mitsuru Saito, Koji Ishida, Philip J. Millar, Ryoichi Banno, and Shigehiko Ogoh
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Cardiopulmonary baroreflex ,Sex differences ,MSNA ,Sympathetic nerve activity ,Physiology ,QP1-981 - Abstract
Abstract The purpose of this study was to clarify sex differences in the inhibition of sympathetic vasomotor outflow which is caused by the loading of cardiopulmonary baroreceptors. Ten young males and ten age-matched females participated. The participants underwent a passive leg raising (PLR) test wherein they were positioned supine (baseline, 0º), and their lower limbs were lifted passively at 10º, 20º, 30º, and 40º. Each angle lasted for 3 min. Muscle sympathetic nerve activity (MSNA) was recorded via microneurography of the left radial nerve. Baseline MSNA was lower in females compared to males. MSNA burst frequency was decreased during the PLR in both males (− 6.2 ± 0.4 bursts/min at 40º) and females (− 6.5 ± 0.4 bursts/min at 40º), but no significant difference was detected between the two groups (P = 0.61). These results suggest that sex has minimal influence on the inhibition of sympathetic vasomotor outflow during the loading of cardiopulmonary baroreceptors in young individuals.
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- 2024
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64. Material Separation from Polyester/Cotton Blended Fabrics Using Hydrothermal Treatment
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Mei Matsumura, Jun Inagaki, Ryo Yamada, Natsuko Tashiro, Katsuya Ito, and Mitsuru Sasaki
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Chemistry ,QD1-999 - Published
- 2024
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65. Surgical outcomes of anterior column reconstruction for spinal fractures caused by minor trauma-preoperative examination of the number of intervertebral bone bridges is key to obtaining good bone fusion
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Mitsuru Furukawa, Kanehiro Fujiyoshi, Keita Kajikawa, Yoshiomi Kobayashi, Tsunehiko Konomi, and Yoshiyuki Yato
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Diffuse idiopathic skeletal hyperostosis ,Femur proximal bone mineral density ,Anterior spinal fusion ,maxVB ,Diseases of the musculoskeletal system ,RC925-935 - Abstract
Abstract Background To achieve good bone fusion in anterior column reconstruction for vertebral fractures, not only bone mineral density (BMD) and bone metabolism markers but also lever arms due to bone bridging between vertebral bodies should be evaluated. However, until now, no lever arm index has been devised. Therefore, we believe that the maximum number of vertebral bodies that are bony and cross-linked with the contiguous adjacent vertebrae (maxVB) can be used as a measure for lever arms. The purpose of this study is to investigate the surgical outcomes of anterior column reconstruction for spinal fractures and to determine the effect of bone bridging between vertebral bodies on the rate of bone fusion using the maxVB as an indicator of the length of the lever arm. Methods The clinical data of 81 patients who underwent anterior column reconstruction for spinal fracture between 2014 and 2022 were evaluated. The bone fusion rate, back pain score, between the maxVB = 0 and the maxVB ≥ 2 patients were adjusted for confounding factors (age, smoking history, diabetes mellitus history, BMD, osteoporosis drugs, surgical technique, number of fixed vertebrae, materials used for the anterior props, etc.) and analysed with multivariate or multiple regression analyses. The bone healing rate and incidence of postoperative back pain were compared among the three groups (maxVB = 0, 2 $$\leqq$$ maxVB $$\leqq$$ 8, maxVB ≧ 9) and divided by the maxVB after adjusting for confounding factors. Results Patients with a maxVB ≥ 2 had a significantly higher bone fusion rate (p
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- 2024
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66. Neighboring macrophage-induced alteration in the phenotype of colorectal cancer cells in the tumor budding area
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Ichiro Kawamura, Rintaro Ohe, Kazushi Suzuki, Takanobu Kabasawa, Takumi Kitaoka, Daiichiro Takahara, Michihisa Kono, Naoya Uchiyama, Hiroaki Musha, Mitsuru Futakuchi, and Fuyuhiko Motoi
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Colorectal cancer ,Tumor budding ,Topoisomerase 1 ,Tumor–stromal interaction ,Macrophage ,Histological spatial analysis ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 ,Cytology ,QH573-671 - Abstract
Abstract Background A higher number of tumor buds in the invasive front of colorectal cancer (CRC) specimens has been shown to contribute to a poor prognosis in CRC patients. Because macrophages (Mφs) have been demonstrated to alter the phenotype of cancer cells, we hypothesized that the phenotype of CRC cells in the tumor budding (TB) area might be changed by the interaction between CRC cells and Mφs. Methods We assessed the expression of topoisomerase 1 in CRC cells to estimate the acquisition of chemoresistance in CRC. To demonstrate the tumor–stromal interaction between CRC cells and Mφs, we assessed two histological findings, the number of Mφs per single CRC cell and the proximity between CRC cells and Mφs by histological spatial analysis using HALO software. Results The expression levels of topoisomerase 1 in CRC cells were decreased in deeper areas, especially in the TB area, compared to the surface area. Our histological spatial analysis revealed that 2.6 Mφs located within 60 μm of a single CRC cell were required to alter the phenotype of the CRC cell. Double-immunofluorescence staining revealed that higher Mφs were positive for interleukin-6 (IL-6) in the TB area and that AE1/AE3-positive CRC cells were also positive for phospho-STAT3 (pSTAT3) in the TB area; thus, the IL-6 receptor (IL-6R)/STAT3 signaling pathway in CRC cells was upregulated by IL-6 derived from neighboring Mφs. Conclusion IL-6 secreted from the neighboring Mφs would alter the phenotype of CRC cells via IL-6R/STAT3 signaling pathway.
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- 2024
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67. Impact of preexisting proteinuria on the development of regorafenib-induced problematic proteinuria in real-world metastatic colorectal cancer treatment
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Yoshitaka Saito, Yoh Takekuma, Yoshito Komatsu, and Mitsuru Sugawara
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Regorafenib ,Proteinuria ,Vascular endothelial growth factor (VEGF) ,Multikinase inhibitor ,Preexisting proteinuria ,Risk factor ,Medicine ,Science - Abstract
Abstract Regorafenib is the first multikinase inhibitor for treating metastatic colorectal cancer (mCRC). Proteinuria is a frequently encountered adverse effect, regardless of prior administration of vascular endothelial growth factor inhibitors. Herein, we aimed to assess the impact of baseline preexisting proteinuria on regorafenib-induced problematic proteinuria during real-world mCRC therapy. Patients with mCRC receiving regorafenib (n = 100) were retrospectively assessed and divided into control and preexisting proteinuria (baseline grade of 1–2) groups. The primary endpoint was the development of grade ≥ 2 (grade ≥ 3 in case of baseline grade 2 patients) proteinuria. Propensity score-matching was performed to confirm the robustness of primary analyses. Defined proteinuria occurred in 30.7 and 57.9% of patients in the control and preexisting proteinuria groups, respectively, with significant differences in the all-patient population (P = 0.01). The preexisting proteinuria group exhibited significant defined proteinuria development within 7 days of regorafenib initiation, grade ≥ 3 symptoms, and treatment suspension owing to proteinuria. Similar results were obtained in the propensity score-matched population. According to multivariate logistic regression analysis, baseline proteinuria was a singular risk factor for defined proteinuria development (adjusted odds ratio; 3.76, 95% confidence interval; 1.45–9.75, P = 0.007). Collectively, our study revealed that patients with preexisting proteinuria develop regorafenib-induced proteinuria degradation.
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- 2024
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68. A novel prediction tool for mortality in patients with acute lower gastrointestinal bleeding requiring emergency hospitalization: a large multicenter study
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Naoyuki Tominaga, Eiji Sadashima, Tomonori Aoki, Minoru Fujita, Katsumasa Kobayashi, Atsushi Yamauchi, Atsuo Yamada, Jun Omori, Takashi Ikeya, Taiki Aoyama, Yoshinori Sato, Takaaki Kishino, Naoki Ishii, Tsunaki Sawada, Masaki Murata, Akinari Takao, Kazuhiro Mizukami, Ken Kinjo, Shunji Fujimori, Takahiro Uotani, Hiroki Sato, Sho Suzuki, Toshiaki Narasaka, Junnosuke Hayasaka, Tomohiro Funabiki, Yuzuru Kinjo, Akira Mizuki, Shu Kiyotoki, Tatsuya Mikami, Ryosuke Gushima, Hiroyuki Fujii, Yuta Fuyuno, Takuto Hikichi, Yosuke Toya, Kazuyuki Narimatsu, Noriaki Manabe, Koji Nagaike, Tetsu Kinjo, Yorinobu Sumida, Sadahiro Funakoshi, Kiyonori Kobayashi, Tamotsu Matsuhashi, Yuga Komaki, Kuniko Miki, Kazuhiro Watanabe, Mitsuru Kaise, and Naoyoshi Nagata
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Medicine ,Science - Abstract
Abstract The study aimed to identify prognostic factors for patients with acute lower gastrointestinal bleeding and to develop a high-accuracy prediction tool. The analysis included 8254 cases of acute hematochezia patients who were admitted urgently based on the judgment of emergency physicians or gastroenterology consultants (from the CODE BLUE J-study). Patients were randomly assigned to a derivation cohort and a validation cohort in a 2:1 ratio using a random number table. Assuming that factors present at the time of admission are involved in mortality within 30 days of admission, and adding management factors during hospitalization to the factors at the time of admission for mortality within 1 year, prognostic factors were established. Multivariate analysis was conducted, and scores were assigned to each factor using regression coefficients, summing these to measure the score. The newly created score (CACHEXIA score) became a tool capable of measuring both mortality within 30 days (ROC-AUC 0.93) and within 1 year (C-index, 0.88). The 1-year mortality rates for patients classified as low, medium, and high risk by the CACHEXIA score were 1.0%, 13.4%, and 54.3% respectively (all P
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- 2024
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69. Trisomy 13 with retroiliac ureter diagnosed by assessment for recurrent febrile urinary tract infections
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Yosuke Morizawa, Mitsuru Tomizawa, Takuto Shimizu, Kenta Onishi, Shunta Hori, Daisuke Gotoh, Yasushi Nakai, Makito Miyake, Kazumasa Torimoto, and Kiyohide Fujimoto
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hydronephrosis ,mid‐ureteral stricture ,retroiliac ureter ,trisomy 13 ,ureteroureterostomy ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction Patients with trisomy 13 have multiple malformations, including urological anomalies, and severe cognitive and psychomotor disabilities. We conducted a ureteroureterostomy for a mid‐ureteral stricture due to a retroiliac ureter in a patient with trisomy 13. Case presentation A 6‐month‐old girl with trisomy 13 developed a urinary tract infection. Computed tomography for assessing recurrent urinary tract infection revealed a left mid‐ureteral stricture due to the retroiliac ureter. At the age of 2, a ureteroureterostomy was performed. Two years after surgery, the urinary tract infection did not recur. Conclusion Ureteroureterostomy is a safe procedure for children with trisomy 13 and multiple comorbidities. Surgical treatment should be considered for patients with trisomy 13 when agreed upon by the family and comorbidities are well‐controlled.
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- 2024
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70. Pseudoaneurysm after arterial reconstruction in kidney transplant nephrectomy: A case report and literature review
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Kuniaki Inoue, Shunta Hori, Mitsuru Tomizawa, Tatsuo Yoneda, Yasushi Nakai, Makito Miyake, Nobumichi Tanaka, and Kiyohide Fujimoto
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kidney transplant nephrectomy ,pseudoaneurysm ,transplant kidney infection ,vascular complication ,vascular reconstruction ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Background Pseudoaneurysm formation sometimes complicates transplant nephrectomy. We report a case of bleeding from a pseudoaneurysm after transplantation nephrectomy that resulted in shock and emergency endovascular treatment. Case presentation A 56‐year‐old man underwent transplant nephrectomy 3 years and 9 months following transplantation for pyelonephritis‐related infection control. On postoperative day 7, he developed sudden pain in the lower abdomen and subsequently went into shock. A pseudoaneurysm at the anastomosis was detected, and urgent endovascular treatment was performed to stem the bleeding. Conclusion Vascular complications, including pseudoaneurysms, following transplant nephrectomy can be life‐threatening, and comprehensive awareness is needed in careful postoperative management.
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- 2024
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71. Operator-derived particles and falling bacteria in biosafety cabinets
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Mitsuru Mizuno, Koki Abe, Takashi Kakimoto, Hisashi Hasebe, Naoki Kagi, and Ichiro Sekiya
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Particle ,Colony-forming unit ,Falling bacteria ,Biosafety cabinet ,Cell-product processing ,Medicine (General) ,R5-920 ,Cytology ,QH573-671 - Abstract
Introduction: To ensure the sterility of cell products that cannot undergo conventional sterilization processes, it is imperative to establish and maintain a clean room environment, regulated through environmental monitoring, including particle counts. Nevertheless, the impact of particles generated by operators as potential contaminants remains uncertain. Thus, in this study, we conducted an accelerated test to assess the correlation between particles generated by operators and airborne bacteria, utilizing biosafety cabinets within a typical laboratory setting. These biosafety cabinets create a controlled environment with air conditioning and high-efficiency particulate air (HEPA) filters, offering fundamental data relevant to cell production. Materials and methods: We conducted a simulation followed by real-time experiments involving human operations to explore the quantity of particles, particle sizes, and the percentage of bacteria within these particles. This investigation focused on conditions with heightened particle generation from operators within a biosafety cabinet. The experiment was conducted on operators wearing textile and non-woven dustless clothing within biosafety cabinets. It entailed tapping the upper arms for a duration of 2 min. Results: Observations under biosafety cabinet-off conditions revealed the presence of various particles and falling bacteria in textile clothing. In contrast, no particles or falling bacteria were detected in operators wearing dustless clothing within biosafety cabinets. Notably, a correlation between 5 μm particles and colony-forming units in textile clothing was identified through this analysis. The ratio of falling bacteria to the total number of particles within the biosafety cabinet was 0.8 ± 0.5 % for textile clothing, while it was significantly lower at 0.04 ± 0.2 % for dustless clothing. Conclusion: This study demonstrated that the number of particles and falling bacteria varied depending on the type of clothing and that quantitative data could be used to identify risks and provide basic data for operator education and evidence-based control methods in aseptic manufacturing areas. Although, this study aims to serve as an accelerated test operating under worst-case conditions, the results need to make sure the study range in general research.
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- 2024
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72. Spinal osteoarthritis is a risk of vertebral fractures in postmenopausal women
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Tatsuhiko Kuroda, Masataka Shiraki, Mitsuru Saito, and Tomohiko Urano
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Osteoarthritis ,Fracture risk ,Bone mineral density ,Medicine ,Science - Abstract
Abstract Recent studies have revealed that despite high bone mineral density (BMD), osteoarthritis (OA) is a risk factor for osteoporotic fractures. However, the relationship between spinal OA and vertebral fractures has not yet been fully investigated. This longitudinal analysis used a subset of ongoing cohort study consist with Japanese postmenopausal women. The prevalence of spinal OA was determined using Kellgren–Lawrence grading method. The incidence of vertebral fractures were determined by semiquantitative analysis of spinal X-ray films. The relationship between the presence of spinal OA and incidence of vertebral fractures was evaluated using the Cox regression analysis. In total, 1480 women were followed up for 8.1 ± 6.4 years. Among them, 923 were diagnosed with spinal OA, and incident vertebral fractures were observed in 473 participants. After adjusting for confounding variables, the spinal OA (≥ grade 2) was a significant predictor of incident vertebral fractures (hazard ratio, 1.52; 95% confidence interval: 1.19–1.93, p = 0.001). Using ROC analysis, the thresholds of lumbar BMD for incident vertebral fractures were 0.952 g/cm2 for patients with spinal OA and 0.753 g/cm2 for patients without spinal OA. The presence of spinal OA is a risk factor for incident vertebral fractures despite high lumbar BMD.
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- 2024
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73. Granulocyte macrophage colony-stimulating factor-induced macrophages of individuals with autism spectrum disorder adversely affect neuronal dendrites through the secretion of pro-inflammatory cytokines
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Ryohei Takada, Michihiro Toritsuka, Takahira Yamauchi, Rio Ishida, Yoshinori Kayashima, Yuki Nishi, Mitsuru Ishikawa, Kazuhiko Yamamuro, Minobu Ikehara, Takashi Komori, Yuki Noriyama, Kohei Kamikawa, Yasuhiko Saito, Hideyuki Okano, and Manabu Makinodan
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Autism spectrum disorder ,Human iPS cell ,Macrophage ,Interleukin-1α ,Tumor necrosis factor-α ,Dendrite ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background A growing body of evidence suggests that immune dysfunction and inflammation in the peripheral tissues as well as the central nervous system are associated with the neurodevelopmental deficits observed in autism spectrum disorder (ASD). Elevated expression of pro-inflammatory cytokines in the plasma, serum, and peripheral blood mononuclear cells of ASD has been reported. These cytokine expression levels are associated with the severity of behavioral impairments and symptoms in ASD. In a prior study, our group reported that tumor necrosis factor-α (TNF-α) expression in granulocyte–macrophage colony-stimulating factor-induced macrophages (GM-CSF MΦ) and the TNF-α expression ratio in GM-CSF MΦ/M-CSF MΦ (macrophage colony-stimulating factor-induced macrophages) was markedly higher in individuals with ASD than in typically developed (TD) individuals. However, the mechanisms of how the macrophages and the highly expressed cytokines affect neurons remain to be addressed. Methods To elucidate the effect of macrophages on human neurons, we used a co-culture system of control human-induced pluripotent stem cell-derived neurons and differentiated macrophages obtained from the peripheral blood mononuclear cells of five TD individuals and five individuals with ASD. All participants were male and ethnically Japanese. Results Our results of co-culture experiments showed that GM-CSF MΦ affect the dendritic outgrowth of neurons through the secretion of pro-inflammatory cytokines, interleukin-1α and TNF-α. Macrophages derived from individuals with ASD exerted more severe effects than those derived from TD individuals. Limitations The main limitations of our study were the small sample size with a gender bias toward males, the use of artificially polarized macrophages, and the inability to directly observe the interaction between neurons and macrophages from the same individuals. Conclusions Our co-culture system revealed the non-cell autonomous adverse effects of GM-CSF MΦ in individuals with ASD on neurons, mediated by interleukin-1α and TNF-α. These results may support the immune dysfunction hypothesis of ASD, providing new insights into its pathology.
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- 2024
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74. Leg length discrepancy should be assessed based on the whole length of the lower limb in patients with osteoarthritis secondary to developmental dysplasia of the hip
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Ryuichi Sato, Hidetoshi Hamada, Keisuke Uemura, Kazuma Takashima, Wataru Ando, Masaki Takao, Mitsuru Saito, and Nobuhiko Sugano
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hip osteoarthritis ,ddh ,leg length discrepancy ,computed tomography ,whole leg length ,radiological leg length measurement ,developmental dysplasia of the hip (ddh) ,osteoarthritis (oa) ,lower limbs ,femoral length ,femora ,leg lengths ,lesser trochanter ,primary hip osteoarthritis ,greater trochanter ,Orthopedic surgery ,RD701-811 - Abstract
Aims: This study aimed to investigate the incidence of ≥ 5 mm asymmetry in lower and whole leg lengths (LLs) in patients with unilateral osteoarthritis (OA) secondary to developmental dysplasia of the hip (DDH-OA) and primary hip osteoarthritis (PHOA), and the relationship between lower and whole LL asymmetries and femoral length asymmetry. Methods: In total, 116 patients who underwent unilateral total hip arthroplasty were included in this study. Of these, 93 had DDH-OA and 23 had PHOA. Patients with DDH-OA were categorized into three groups: Crowe grade I, II/III, and IV. Anatomical femoral length, femoral length greater trochanter (GT), femoral length lesser trochanter (LT), tibial length, foot height, lower LL, and whole LL were evaluated using preoperative CT data of the whole leg in the supine position. Asymmetry was evaluated in the Crowe I, II/III, IV, and PHOA groups. Results: The incidences of whole and lower LL asymmetries were 40%, 62.5%, 66.7%, and 26.1%, and 21.7%, 20.8%, 55.6%, and 8.7% in the Crowe I, II/III, and IV, and PHOA groups, respectively. The incidence of tibial length asymmetry was significantly higher in the Crowe IV group (44.4%) than that in the PHOA group (4.4%). In all, 50% of patients with DDH-OA with femoral length GT and LT asymmetries had lower LL asymmetry, and 75% had whole LL asymmetry. The incidences of lower and whole LL asymmetries were 20% and 42.9%, respectively, even in the absence of femoral length GT and LT asymmetries. Conclusion: Overall, 43% of patients with unilateral DDH-OA without femoral length asymmetry had whole LL asymmetry of ≥ 5 mm. Thus, both the femur length and whole LL should be measured to accurately assess LL discrepancy in patients with unilateral DDH-OA. Cite this article: Bone Jt Open 2024;5(2):79–86.
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- 2024
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75. Decrease in Mycophenolic Acid Plasma Level by Sacubitril/Valsartan in a Lupus Nephritis Patient: A Case Report
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Shunsuke Nashimoto, Masashi Miyamae, Issei Higuchi, Michihito Kono, Maria Tada, Tatsuya Atsumi, Mitsuru Sugawara, and Yoh Takekuma
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systemic lupus erythematosus ,lupus nephritis ,hypertension ,pharmacokinetics ,drug-drug interaction ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Introduction: Mycophenolate mofetil (MMF), an inactive prodrug of mycophenolic acid (MPA), is an immunosuppressive drug used widely in the treatment of lupus nephritis. In this case report, the area under the blood concentration time curve (AUC) of MPA was significantly decreased by the concomitant use of sacubitril/valsartan. Case Presentation: The patient was a man in his 40s with a diagnosis of lupus nephritis class IVa/c+V. MMF dose was 1.5 g/day at admission, and AUC of MPA on day 14 was 25.1 μg⋅h/mL. Owing to poor blood pressure control, sacubitril/valsartan was initiated at 97/103 mg/day on day 29. On day 37, AUC of MPA was significantly decreased to 8.7 μg⋅h/mL, suggesting drug interaction with the newly initiated sacubitril/valsartan. Sacubitril/valsartan was decreased to 49/51 mg/day, and AUC of MPA on day 67 was 37.6 μg⋅h/mL, achieving the target range. The final MMF dose was set at 1.75 g/day. A possible mechanism of drug interaction between sacubitril/valsartan and MPA involves an organic anion transporting polypeptide (OATP). The inhibition of OATPs by sacubitril may have interrupted the enterohepatic circulation of MPA, resulting in a lower plasma concentration. Conclusion: Since lupus nephritis is often associated with hypertension, the drug interaction observed in this report may also occur in other cases. However, it is impossible to conclude that the decrease in plasma MPA levels was due to the concomitant use of sacubitril/valsartan, and more cases and basic findings are needed.
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- 2024
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76. SACrA score to predict the initiation of renal replacement therapy in critically ill patients: a single-center retrospective study
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Ginga Suzuki, Saria Nishioka, Toshimitsu Kobori, Yuka Masuyama, Saki Yamamoto, Hibiki Serizawa, Yoshimi Nakamichi, and Mitsuru Honda
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Renal replacement therapy ,AKI ,acute kidney injury ,critical care ,intensive care ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Background Acute kidney injury (AKI) is a prevalent complication in critically ill patients that affects the timing of renal replacement therapy (RRT) initiation. This study aimed to develop and validate the SACrA score for predicting non-emergent initiations (BUN ≥112 mg/dL or oliguria for >72 h) of RRT in critically ill patients.Methods We conducted a retrospective cohort study using data from two cohorts. The derivation cohort included patients admitted to the ICU between November 2021 and December 2023, whereas the validation cohort included patients admitted between September 2019 and October 2021. The primary outcome was non-emergent RRT initiation. The multivariate logistic regression with stepwise selection based on the Akaike information criterion finalized the model, including the variables, such as sex, albumin (Alb), creatinine (Cr), and APACHE II score (SACrA).Results The derivation and validation cohorts comprised 470 and 476 patients, respectively. The SACrA score showed a strong predictive performance for non-emergent RRT initiation in both the cohorts. Cohort 1 had an ROC–AUC of 0.971, with a calibration slope of 0.982 and an intercept of 0.009, whereas cohort 2 had an ROC–AUC of 0.918, with a calibration slope of 0.988 and an intercept of 0.004.Conclusions The SACrA score is a robust tool for predicting non-emergent RRT initiation in critically ill patients using readily available clinical variables. Though additional data are needed to validate the SACrA score, our analysis suggests the tool may help clinicians make informed decisions, reduce unnecessary RRT, and thereby improve patient outcomes.
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- 2024
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77. The association of the medial meniscus covering ratio with knee cartilage thickness at 15 medial compartment subregions as found by three‐dimensional analysis using MRI
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Nobutake Ozeki, Hideyuki Koga, Tomomasa Nakamura, Hiroki Katagiri, Yusuke Nakagawa, Takashi Hoshino, Mai Katakura, Masaki Amemiya, Aritoshi Yoshihara, Hisako Katano, Mitsuru Mizuno, Kentaro Endo, Jun Masumoto, and Ichiro Sekiya
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cartilage thickness ,knee ,meniscus coverage ratio ,meniscus extrusion ,MRI 3D analysis ,Orthopedic surgery ,RD701-811 - Abstract
Abstract Purpose The correlation of cartilage thickness measured by three‐dimensional (3D) magnetic resonance imaging (MRI) and the medial meniscal coverage ratio (MMCR), which presented pathology of the medial meniscus extrusion (MME) in 3D MRI, has not yet been elucidated. The study's purpose was to retrospectively verify whether the average cartilage thickness calculated by the automatic MRI 3D analysis system for each subregion was correlated with MMCR. Methods A total of 60 patients underwent medial meniscus repair or high tibial osteotomy to treat their medial knee osteoarthritis. Cartilage thickness and MMCR were automatically calculated using 3D MRI software. The MMCR was defined as the ratio of the area covered by the meniscus within the medial tibial cartilage area to the total medial tibial cartilage area. The association between MMCR and the average cartilage thickness at 15 subregions in the medial femoral condyle (MFC) and medial tibial plateau (MTP) was evaluated using Spearman's rank correlation coefficient. Results Kellgren–Lawrence grade exhibited a negative correlation with MMCR and a positive correlation with MME width. Cartilage thickness in the MTP had a moderately positive correlation with MMCR at four subregions and a weakly positive correlation at another subregion. Cartilage thickness in the MFC showed a moderately positive correlation with MMCR at five subregions and a weakly positive correlation at one subregion. Conclusions Cartilage thickness calculated by automatic MRI 3D analysis system had a positive correlation with MMCR for all subregions of the anterior and middle subregions in the MFC and for five regions of nine subregions of the anterior and middle subregions in the MTP. Level of evidence Level II, cross‐sectional study (diagnosis).
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- 2024
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78. Anti‐epileptic drug use and subsequent degenerative dementia occurrence
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Naoki Ikegaya, Honoka Nakamura, Yutaro Takayama, Yohei Miyake, Takahiro Hayashi, Masaki Sonoda, Mitsuru Sato, Kensuke Tateishi, Jun Suenaga, Masao Takaishi, Yu Kitazawa, Misako Kunii, Hiroki Abe, Tomoyuki Miyazaki, Tetsuaki Arai, Manabu Iwasaki, Takayuki Abe, and Tetsuya Yamamoto
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Alzheimer's disease ,anti‐epileptic drug ,degenerative dementia ,epilepsy ,neuronal hyperexcitability ,nationwide cohort ,Neurology. Diseases of the nervous system ,RC346-429 ,Geriatrics ,RC952-954.6 - Abstract
Abstract INTRODUCTION The use of anti‐epileptic drugs (AEDs) in degenerative dementia (DD) remains uncertain. We aimed to evaluate the association of early AED administration with subsequent DD occurrence. METHODS Using a large nationwide database, we enrolled patients newly diagnosed with epilepsy from 2014 to 2019 (n = 104,225), and using propensity score matching, we divided them into treatment (those prescribed AEDs in 2014) and control groups. The primary outcome was subsequent DD occurrence in 2019. RESULTS Overall, 4489 pairs of patients (2156 women) were matched. The odds ratio (treatment/control) for DD occurrence was 0.533 (95% confidence interval: 0.459–0.617). The DD proportions significantly differed between the treatment (340/4489 = 0.076) and control (577/4489 = 0.129) groups. DISCUSSION Among patients newly diagnosed with epilepsy, compared to non‐use, early AED use was associated with a lower occurrence of subsequent DD. Further investigations into and optimization of early intervention for epilepsy in DD are warranted. Highlights Anti‐epileptic drug (AED) use before epilepsy diagnosis was linked with a lower subsequent degenerative dementia (DD) occurrence. Identifying the epileptic phenotype was crucial for justifying early AED use in DD. AED use with an epilepsy diagnosis did not pose an additional risk of DD. The potential contribution of combination drug therapy to the strategy was noted.
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- 2024
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79. Abundant resources compensate for the uneven distribution of ungulates in desert grassland
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Xiaowei Gou, Atsushi Tsunekawa, Mitsuru Tsubo, Fei Peng, and Yunxiang Cheng
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foraging distribution ,overgrazing ,resource selection function model ,management strategies ,resource availability ,desertification ,Plant culture ,SB1-1110 - Abstract
IntroductionStrategically managing livestock grazing in arid regions optimizes land use and reduces the damage caused by overgrazing. Controlled grazing preserves the grassland ecosystem and fosters sustainability despite resource limitations. However, uneven resource distribution can lead to diverse grazing patterns and land degradation, particularly in undulating terrains.MethodsIn this study, we developed a herbivore foraging algorithm based on a resource selection function model to analyze foraging distribution patterns, predict the probability of foraging, and identify the determinants of foraging probability in cattle. The study area was a complex desert landscape encompassing dunes and interdunes. Data on cattle movements and resource distribution were collected and analyzed to model and predict foraging behavior.ResultsOur findings revealed that cattle prefer areas with abundant vegetation in proximity to water sources and avoid higher elevations. However, abundant resource availability mitigated these impacts and enhanced the role of water points, particularly during late grazing periods. The analysis showed that available resources primarily determine foraging distribution patterns and lessen the effects of landforms and water distance on patch foraging.DiscussionThe results suggest that thoughtful water source placement and the subdivision of pastures into areas with varied terrain are crucial for sustainable grazing management. By strategically managing these factors, land degradation can be minimized, and the ecological balance of grassland ecosystems can be maintained. Further research is needed to refine the model and explore its applicability in other arid regions.
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- 2024
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80. A transformative framework reshaping sustainable drought risk management through advanced early warning systems
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Teboho Elisa Masupha, Mokhele Edmond Moeletsi, and Mitsuru Tsubo
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earth sciences ,hazard communication ,Science - Abstract
Summary: In light of the increasing vulnerability to drought occurrences and the heightened impact of drought-related disasters on numerous communities, it is imperative for drought-sensitive sectors to adopt proactive measures. This involves the implementation of early warning systems to effectively mitigate potential risks. Guided by Toulmin’s model of argumentation, this research proposes a framework of eight interconnected modules introducing Fourth Industrial Revolution technologies to enhance drought early warning capabilities. The framework emphasizes the Internet of Things, drones, big data analytics, and deep learning for real-time monitoring and accurate drought forecasts. Another key component is the role of natural language processing in analyzing data from unstructured sources, such as social media, and reviews, essential for improving alerts, dissemination, and interoperability. While the framework optimizes resource use in agriculture, water, and the environment, overcoming impending limitations is crucial; hence, practical implementation and amendment of policies are necessary.
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- 2024
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81. Response of stomatal density and size in Betula ermanii to contrasting climate conditions: The contributions of genetic and environmental factors
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Yihan Cai, Takaki Aihara, Kyoko Araki, Ragini Sarmah, Yoshihiko Tsumura, and Mitsuru Hirota
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Betula ermanii ,climate change ,common garden experiment ,intraspecific variation ,stomatal density ,stomatal size ,Ecology ,QH540-549.5 - Abstract
Abstract As plant distribution and performance are determined by both environmental and genetic factors, clarifying the contribution of these two factors is a key for understanding plant adaptation and predicting their distribution under ongoing global warming. Betula ermanii is an ideal species for such research because of its wide distribution across diverse environments. Stomatal density and size are crucial traits that plants undergo changes in to adapt to different environments as these traits directly influence plant photosynthesis and transpiration. In this study, we conducted a multi‐location common garden experiment using B. ermanii to (1) clarify the contribution of both environmental and genetic factors to the variation in stomatal density and size of B. ermanii, (2) demonstrate the differences in the plasticity of stomatal density and size among B. ermanii populations, and (3) understand how stomatal density and size of B. ermanii would respond to increased temperature and changing precipitation patterns. Genetic factors played a more significant role in stomatal size than environmental factors, suggesting that B. ermanii struggles to adjust its stomatal size in response to a changing environment. Our results also revealed a positive correlation between stomatal size plasticity and original habitat suitability, indicating that in B. ermanii populations in harsh environments exhibit lower adaptability to environmental shifts. Although stomatal density and size of B. ermanii showed the significant responses to increased temperature and shifting precipitation patterns, the response ranges of stomatal density and size to the environmental factors varied among populations. Our findings highlighted the interplay between genetic and environmental factors in determining the intraspecific variation in stomatal density and size in B. ermanii. This indicated that certain populations of B. ermanii exhibit limited stomatal plasticity and adaptability, which could directly affect photosynthesis and transpiration, suggesting potential population‐specific fitness implications for B. ermanii under future climate change.
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- 2024
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82. Search for unknown neural link between the masticatory and cognitive brain systems to clarify the involvement of its impairment in the pathogenesis of Alzheimer’s disease
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Youngnam Kang, Hiroki Toyoda, and Mitsuru Saito
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Alzheimer’s disease ,locus coeruleus ,mesencephalic trigeminal nucleus ,neurotrophic factor-3 (NT-3) ,3,4-dihydroxyphenylglycolaldehyde (DOPEGAL) ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Brain degenerations in sporadic Alzheimer’s disease (AD) are observed earliest in the locus coeruleus (LC), a population of noradrenergic neurons, in which hyperphosphorylated tau protein expression and β-amyloid (Aβ) accumulation begin. Along with this, similar changes occur in the basal forebrain cholinergic neurons, such as the nucleus basalis of Meynert. Neuronal degeneration of the two neuronal nuclei leads to a decrease in neurotrophic factors such as brain-derived neurotrophic factor (BDNF) in the hippocampus and cerebral cortex, which results in the accumulation of Aβ and hyperphosphorylated tau protein and ultimately causes neuronal cell death in those cortices. On the other hand, a large number of epidemiological studies have shown that tooth loss or masticatory dysfunction is a risk factor for dementia including AD, and numerous studies using experimental animals have also shown that masticatory dysfunction causes brain degeneration in the basal forebrain, hippocampus, and cerebral cortex similar to those observed in human AD, and that learning and memory functions are impaired accordingly. However, it remains unclear how masticatory dysfunction can induce such brain degeneration similar to AD, and the neural mechanism linking the trigeminal nervous system responsible for mastication and the cognitive and memory brain system remains unknown. In this review paper, we provide clues to the search for such “missing link” by discussing the embryological, anatomical, and physiological relationship between LC and its laterally adjoining mesencephalic trigeminal nucleus which plays a central role in the masticatory functions.
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- 2024
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83. An attempt at friction-stir-welding of α-Mg/long-period stacking ordered two-phase Mg–Zn–Y–Al–La alloys: Effect of texture weakening on their mechanical properties
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Shin-ichi Inoue, Michiaki Yamasaki, Mitsuru Ohata, Shigeki Kakiuchi, Yoshihito Kawamura, and Hidenori Terasaki
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Magnesium alloy ,Long-period stacking ordered phase ,Friction stir welding ,Texture weakening ,DIC ,EBSD ,Materials of engineering and construction. Mechanics of materials ,TA401-492 - Abstract
Friction-stir (FS) welding was used for the first time to successfully join Mg–Zn–Y–Al–La alloy extrusions containing the long-period stacking ordered (LPSO) phase. Plastic flow produced fine α-Mg grains of sizes 2.0–2.5 μm with random orientation in the stir zone (SZ) and stir-affected zone (SAZ), as well as fine fragmentation of the LPSO phase. No strong (101¯0) textures were observed in the SZ and the SAZ of the FS-welded Mg–Zn–Y–Al–La alloys. The tensile deformation behavior and texture evolution were evaluated via mechanical testing using digital image correlation and electron backscatter diffraction measurements. The FS-welded Mg–Zn–Y–Al–La alloy exhibited a tensile yield strength of 248 MPa, a joint efficiency of 1.12, and sufficient ductility owing to texture weakening caused by rare-earth texture formation, which suppressed geometric softening. However, no damage was observed at the incompatible boundary between the SZ and SAZ, which is typically a fracture point. The FS-welded Mg–Zn–Y–Al–La alloy fractured in the heat-affected zone on the advancing side, where the temperature was higher than on the retreating side, owing to recrystallization promotion.
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- 2024
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84. Traces of pandemic fluoroquinolone-resistant Escherichia coli clone ST131 transmitted from human society to aquatic environments and wildlife in Japan
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Toyotaka Sato, Kojiro Uemura, Mitsuru Yasuda, Aiko Maeda, Toshifumi Minamoto, Kazuki Harada, Michiyo Sugiyama, Shiori Ikushima, Shin-ichi Yokota, Motohiro Horiuchi, Satoshi Takahashi, and Testuo Asai
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Antimicrobial resistance ,Escherichia coli ,Fluoroquinolone resistance ,ST131 ,Medicine (General) ,R5-920 - Abstract
Transmission of antimicrobial-resistant bacteria among humans, animals, and the environment is a growing concern worldwide. The distribution of an international high-risk fluoroquinolone-resistant Escherichia coli clone, ST131, has been documented in clinical settings. However, the transmission of ST131 from humans to surrounding environments remains poorly elucidated. To comprehend the current situation and identify the source of ST131 in nature, we analyzed the genetic features of ST131 isolates from the aquatic environment (lake/river water) and wildlife (fox, raccoon, raccoon dog, and deer) and compared them with the features of isolates from humans in Japan using accessory and core genome single nucleotide polymorphism (SNP) analyses. We identified ST131 isolates belonging to the same phylotype and genome clusters (four of eight clusters were concomitant) with low SNP distance between the human isolates and those from the aquatic environment and wildlife. These findings warn of ST131 transmission between humans and the surrounding environment in Japan.
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- 2024
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85. Satisfaction following correction of spinal deformity: Cultural and regional effects on outcome
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Mitsuru Yagi, MD, PhD, Ryo Mizukoshi, MD, Naruhito Fujita, MD, PhD, Haruki Funao, MD, PhD, and Shigeto Ebata, MD, PhD
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Ethnicity ,Spinal deformity ,HRQOL ,Satisfaction ,Orthopedic surgery ,RD701-811 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Corrective spine surgery for spinal deformities, such as adolescent idiopathic scoliosis (AIS) and adult spinal deformity (ASD), aims to enhance the quality of life by addressing physical impairments. However, the extent of patient satisfaction after surgery, which includes pain management, functional recovery, and psychological contentment, exhibits considerable variation across different cultural and geographical landscapes. This review describes the influence of cultural and regional disparities on postoperative satisfaction in AIS and ASD surgery with a particular emphasis on the disparities between the US and Japan. This review underscores the intricate relationship between surgical outcomes and patient-reported satisfaction metrics. The investigation reveals significant contrasts in patient satisfaction and clinical results between these 2 countries, attributed to divergent cultural expectations, lifestyle adaptations, and perceptions of bodily image. These distinctions are crucial for healthcare professionals to recognize, as they necessitate a culturally nuanced approach to patient care. This comparative review not only enhances the understanding of patient experiences across cultures but also provides valuable guidance for physicians in customizing their strategies to align with the varied expectations of their patients, thereby improving postoperative satisfaction and overall quality of life. This review emphasizes the necessity of a tailored and culturally sensitive approach to managing spinal deformities, underscoring the need to factor in cultural and regional elements to enhance patient satisfaction and surgical outcomes.
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- 2024
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86. Research on the molecular mechanism of singularity phenomenon in neurological disorders
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Hiroko Bannai, Akihiko Takashima, Yoshiyuki Soeda, Hideaki Yoshimura, Gen Matsumoto, Naruhiko Sahara, Michio Hiroshima, Mitsuru Hattori, and Takeharu Nagai
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Biology (General) ,QH301-705.5 ,Physiology ,QP1-981 ,Physics ,QC1-999 - Published
- 2024
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87. Effects of climate change on fungal infections.
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Samantha L Williams, Mitsuru Toda, Tom Chiller, Joan M Brunkard, and Anastasia P Litvintseva
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Immunologic diseases. Allergy ,RC581-607 ,Biology (General) ,QH301-705.5 - Published
- 2024
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88. Factors leading to open revision surgery after trans-sacral canal plasty for lumbar spine disease
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Daigo Arimura, Akira Shinohara, Shunsuke Katsumi, Shintaro Obata, Taku Ikegami, Naomu Sawada, Keiichiro Mori, and Mitsuru Saito
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trans-sacral canal plasty (TSCP) ,Racz catheter ,adhesiolysis ,minimally invasive spine surgery (MISS) ,lumbar spine disease ,Surgery ,RD1-811 - Abstract
Trans-sacral canal plasty (TSCP) is a minimally invasive lumbar spine surgery under local anaesthesia. TSCP is expected to be effective regardless of whether the patient has had previous surgery. However, there are cases in which open revision surgery is required after TSCP. This study aimed to identify risk factors for open revision surgery after TSCP in order to determine surgical indications and limitations. A retrospective case-control study was conducted in patients who underwent TSCP for lumbar spine disease. Data of 112 patients were analysed. During an observation period of 7–23 months, 34 patients (30.4%) required open revision surgery and 78 (69.6%) did not. The following patient background characteristics were investigated: age, sex, body mass index (BMI), diagnosis, history of spine surgery and the institution where the surgery was performed. Comorbidities were scored using the Elixhauser Comorbidity Index. Preoperative imaging parameters were investigated, including the lesion level (L4/5, L5/S1, other), presence of intervertebral instability, dural sac area, presence of bony stenosis and presence of epidural lipoma. Multivariate analysis revealed that intervertebral instability (odds ratio 2.56, confidence interval 1.00–6.51, p = 0.046) and a narrow dural sac area (odds ratio 0.98, confidence interval 0.97–0.99, p = 0.002) were significant risk factors for open revision surgery after TSCP.
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- 2024
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89. Negative Pressure Wound Therapy for Gas Gangrene of the Fingertip with Prolonged Infection
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Yasufumi Okamoto, MD, Kazuhiro Maeda, MD, PhD, Mitsuhito Yukawa, MD, Reiji Nishimura, MD, PhD, Yuji Nagamine, MD, Yuka Hadano, MD, Ayano Mandai, MD, Jun Udaka, MD, PhD, Takeshi Miyawaki, MD, PhD, and Mitsuru Saito, MD, PhD
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Surgery ,RD1-811 - Abstract
Background:. We encountered a case of infected soft tissue defect of the fingertip treated using negative pressure wound therapy (NPWT). The development of NPWT was started in the early 1990s, and it is a relatively new treatment method included in insurance coverage in Japan in 2010. NPWT is used for intractable wounds; some reports have examined its use on infected wounds. However, to the best of our knowledge, no study has examined its use on infected fingertip wounds. Methods:. A patient with an infected soft tissue defect in the fingertip whose epithelialization period was prolonged despite continued antibiotic therapy was treated using NPWT in combination. Results:. After NPWT was started, signs of infection and wound granulation were good. Additionally, completion of epithelialization was confirmed 7 weeks after NPWT started. Conclusions:. Conventionally, skin flap or graft by hand surgeons have been performed on fingertip soft tissue defects with infection. NPWT does not require specialized and advanced surgical techniques; treatment for infected soft tissue defects can be administered by anyone if they have the required skills. In conclusion, NPWT may be considered a suitable alternative when treatment options such as flaps and skin grafts are not feasible.
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- 2024
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90. Healthy Japanese dietary pattern is associated with slower biological aging in older men: WASEDA’S health study
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Takuji Kawamura, Mitsuru Higuchi, Tomoko Ito, Ryoko Kawakami, Chiyoko Usui, Kristen M. McGreevy, Steve Horvath, Radak Zsolt, Suguru Torii, Katsuhiko Suzuki, Kaori Ishii, Shizuo Sakamoto, Koichiro Oka, Isao Muraoka, and Kumpei Tanisawa
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aging ,biological clocks ,dietary patterns ,DNA methylation ,epigenetics ,Japanese ,Nutrition. Foods and food supply ,TX341-641 - Abstract
Aging is the greatest risk factor for numerous diseases and mortality, and establishing geroprotective interventions targeting aging is required. Previous studies have suggested that healthy dietary patterns, such as the Mediterranean diet, are associated with delayed biological aging; however, these associations depend on nationality and sex. Therefore, this study aimed to investigate the relationship between dietary patterns identified through principal component analysis and biological aging in older men of Japan, one of the countries with the longest life expectancies. Principal component analysis identified two dietary patterns: a healthy Japanese dietary pattern and a Western-style dietary pattern. Eight epigenetic clocks, some of the most accurate aging biomarkers, were identified using DNA methylation data from whole-blood samples. Correlation analyses revealed that healthy Japanese dietary patterns were significantly negatively or positively correlated with multiple epigenetic age accelerations (AgeAccel), including AgeAccelGrim, FitAgeAccel, and age-adjusted DNAm-based telomere length (DNAmTLAdjAge). Conversely, the Western-style dietary pattern was observed not to correlate significantly with any of the examined AgeAccels or age-adjusted values. After adjusting for covariates, the healthy Japanese dietary pattern remained significantly positively correlated with DNAmTLAdjAge. Regression analysis showed that healthy Japanese dietary pattern contributed less to epigenetic age acceleration than smoking status. These findings suggest that a Western-style dietary pattern may not be associated with biological aging, whereas a healthy Japanese dietary pattern is associated with delayed biological aging in older Japanese men. Our findings provide evidence that healthy dietary patterns may have mild beneficial effects on delayed biological aging in older Japanese men.
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- 2024
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91. Sublingual administration of atropine eye drops for treating organophosphorus poisoning
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Ichiro Hirayama, Yoshito Kamijo, Minaho Nonaka, Tetsuhiro Yano, Mitsuru Ishii, and Yoshiteru Tominaga
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atropine ,eye drops ,organophosphorus ,poisoning ,sublingual ,Medicine ,Medicine (General) ,R5-920 - Abstract
Key Clinical Message An 89‐year‐old patient with fenitrothion toxicity received sublingual atropine eye drops, reducing the intravenous atropine requirement. This alternative method enabled rapid rehabilitation, and he walked unaided, leading to discharge.
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- 2024
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92. Intracardiac echocardiography guided simultaneous atrial fibrillation ablation and Micra implantation 14 days after Watchman FLX implantation
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Ryuki Chatani, Hiroshi Tasaka, Shunsuke Kubo, Kenta Yoshida, Mitsuru Yoshino, Takeshi Maruo, and Kazushige Kadota
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atrial fibrillation ,catheter ablation ,intracardiac echocardiography ,leadless pacemaker ,left atrial appendage closure ,Medicine ,Medicine (General) ,R5-920 - Abstract
Key Clinical Message Atrial fibrillation ablation, including pulmonary vein isolation immediately after left atrial appendage closure (LAAC), is a rare and challenging issue. Intracardiac echocardiography guidance can help identify the LAAC device position for safe atrial fibrillation ablation without LAAC device‐related adverse events even immediately after LAAC device implantation. Abstract Early phase atrial fibrillation (AF) ablation after left atrial appendage closure (LAAC) is a rare and challenging issue. Here, we present a case illustrating the feasibility of AF ablation under intracardiac echocardiography guidance immediately after LAAC device implantation without LAAC device‐related adverse events.
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- 2024
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93. A case of type 2 diabetes mellitus with weight gain and worsening of glycemic management after tezepelumab administration for severe bronchial asthma
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Kotaro Umamoto, Ryotaro Bouchi, Noriko Ihana‐Sugiyama, Noriko Kodani, Mitsuru Ohsugi, Masayuki Hojo, Kohjiro Ueki, and Hiroshi Kajio
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Asthma ,Obesity ,Tezepelumab ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Abstract Some cases of bronchial asthma are refractory to conventional therapies. As the pathogenesis of bronchial asthma has been clarified, new treatments, such as bronchial thermoplasty and biological drugs, have been developed. Tezepelumab, an anti‐thymic stromal lymphopoietin antibody, has been reported to inhibit the exacerbation of severe asthma; however, its adverse effects on glucose metabolism have not yet been reported. We encountered a case of weight gain and worsening glycemic management in a patient with type 2 diabetes and refractory bronchial asthma after the initiation of tezepelumab treatment. It has been reported that the overexpression of thymic stromal lymphopoietin in mice resulted in an enhanced release of free fatty acids from adipose tissues and the liver; thus, the administration of anti‐thymic stromal lymphopoietin antibodies in the present case might have caused obesity, fatty liver and lower glucose tolerance.
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- 2024
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94. Late cardiac tamponade after a helix‐based active fixation leadless pacemaker implantation
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Ryuki Chatani, Hiroshi Tasaka, Kenta Yoshida, Mitsuru Yoshino, and Kazushige Kadota
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cardiac tamponade ,helix‐based active fixation ,leadless pacemakerAveir‐VR ,leadless pacemaker ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2024
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95. Comparison of pathophysiology in subclinical hyperthyroidism with different etiologies
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Hanna Deguchi-Horiuchi, Mitsuru Ito, Sawako Takahashi, Kazuyoshi Kousaka, Mako Hisakado, Shuji Fukata, Takumi Kudo, Eijun Nishihara, Mitsushige Nishikawa, Akira Miyauchi, and Takashi Akamizu
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subclinical hyperthyroidism ,thyrotoxicosis ,free triiodothyronine (ft3) ,free thyroxine (ft4) ,thyrotropin (tsh) ,Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Abstract
Subclinical hyperthyroidism (SHyper) is defined as normal levels of free thyroxine (fT4) and free triiodothyronine (fT3) with suppressed levels of TSH. Previous studies have reported the individual pathophysiology of endogenous SHyper patients and athyreotic patients receiving TSH suppression therapy with levothyroxine; however, apparently no studies have compared the two conditions. Five-hundred-forty untreated endogenous SHyper patients and 1,024 patients receiving TSH suppression therapy who underwent total thyroidectomy for papillary thyroid carcinoma were sampled. Thyroid hormone profiles and peripheral indices related to thyrotoxicosis were investigated in endogenous SHyper patients, athyreotic patients receiving TSH suppression therapy, and healthy participants. Endogenous SHyper patients showed significantly higher thyroid hormone levels (fT4 [p < 0.001] and fT3 [p < 0.001]), and peripheral indices showed a significant tendency towards thyrotoxicosis (strong TSH suppression: alkaline phosphatase [ALP, p < 0.001], creatinine [Cre, p < 0.001], pulse rate [p < 0.05]; and mild TSH suppression: Cre [p < 0.05]) than healthy participants. In contrast, athyreotic patients receiving TSH suppression therapy showed a significant tendency towards thyrotoxicosis than healthy participants only when TSH was strongly suppressed (fT3 [p < 0.001] and Cre [p < 0.001]). Endogenous SHyper patients showed significantly higher fT3 levels (p < 0.001) than athyreotic patients receiving TSH suppression therapy; however, there was a significant tendency towards thyrotoxicosis only when TSH was strongly suppressed (ALP [p < 0.05] and pulse rate [p < 0.05]). The effects of endogenous SHyper and TSH suppression therapy on target organ function are different. Although the serum thyroid hormone profile is similar to that of the thyrotoxic state, athyreotic patients receiving TSH suppression therapy with mildly suppressed serum TSH levels are not thyrotoxic.
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- 2024
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96. Unfavorable switching of skewed X chromosome inactivation leads to Menkes disease in a female infant
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Ayumi Matsumoto, Shintaro Kano, Natsumi Kobayashi, Mitsuru Matsuki, Rieko Furukawa, Hirokazu Yamagishi, Hiroki Yoshinari, Waka Nakata, Hiroko Wakabayashi, Hidetoshi Tsuda, Kazuhisa Watanabe, Hironori Takahashi, Takanori Yamagata, Takayoshi Matsumura, Hitoshi Osaka, Harushi Mori, and Sadahiko Iwamoto
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Medicine ,Science - Abstract
Abstract Menkes disease is an X-linked disorder of copper metabolism caused by mutations in the ATP7A gene, and female carriers are usually asymptomatic. We describe a 7-month-old female patient with severe intellectual disability, epilepsy, and low levels of serum copper and ceruloplasmin. While heterozygous deletion of exons 16 and 17 of the ATP7A gene was detected in the proband, her mother, and her grandmother, only the proband suffered from Menkes disease clinically. Intriguingly, X chromosome inactivation (XCI) analysis demonstrated that the grandmother and the mother showed skewing of XCI toward the allele with the ATP7A deletion and that the proband had extremely skewed XCI toward the normal allele, resulting in exclusive expression of the pathogenic ATP7A mRNA transcripts. Expression bias analysis and recombination mapping of the X chromosome by the combination of whole genome and RNA sequencing demonstrated that meiotic recombination occurred at Xp21-p22 and Xq26-q28. Assuming that a genetic factor on the X chromosome enhanced or suppressed XCI of its allele, the factor must be on either of the two distal regions derived from her grandfather. Although we were unable to fully uncover the molecular mechanism, we concluded that unfavorable switching of skewed XCI caused Menkes disease in the proband.
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- 2024
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97. Atypical instantaneous spatio-temporal patterns of neural dynamics in Alzheimer’s disease
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Sou Nobukawa, Takashi Ikeda, Mitsuru Kikuchi, and Tetsuya Takahashi
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Medicine ,Science - Abstract
Abstract Cognitive functions produced by large-scale neural integrations are the most representative ‘emergence phenomena’ in complex systems. A novel approach focusing on the instantaneous phase difference of brain oscillations across brain regions has succeeded in detecting moment-to-moment dynamic functional connectivity. However, it is restricted to pairwise observations of two brain regions, contrary to large-scale spatial neural integration in the whole-brain. In this study, we introduce a microstate analysis to capture whole-brain instantaneous phase distributions instead of pairwise differences. Upon applying this method to electroencephalography signals of Alzheimer’s disease (AD), which is characterised by progressive cognitive decline, the AD-specific state transition among the four states defined as the leading phase location due to the loss of brain regional interactions could be promptly characterised. In conclusion, our synthetic analysis approach, focusing on the microstate and instantaneous phase, enables the capture of the instantaneous spatiotemporal neural dynamics of brain activity and characterises its pathological conditions.
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- 2024
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98. Safe and secure laparoscopy-assisted jejunostomy tube placement using a percutaneous loop needle device in an infant
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Makoto Matsukubo, Mitsuru Muto, Shun Onishi, Nanako Nishida, Chihiro Kedoin, Ayaka Nagano, Mayu Matsui, Masakazu Murakami, Koshiro Sugita, Keisuke Yano, Toshio Harumatsu, Koji Yamada, Waka Yamada, Takafumi Kawano, Tatsuru Kaji, and Satoshi Ieiri
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jejunostomy tube placement ,laparoscopy-assisted procedure ,loop needle device ,Surgery ,RD1-811 ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
We, herein, report a surgical technique for laparoscopy-assisted jejunostomy tube placement in an infant using a loop needle device to fix the jejunum and abdominal wall. A 3-year-old boy with Down's syndrome underwent nutritional management by gastrostomy due to oral feeding difficulty after radical surgery for congenital duodenal stenosis and following bile duct stenosis. However, intractable gastrostomy site leakage emerged; hence, laparoscopy-assisted gastrostomy takedown and simultaneous laparoscopy-assisted jejunostomy tube placement were planned. After laparoscopy-assisted gastrostomy closure was performed, the jejunum was extracted through the umbilical trocar wound. A jejunostomy tube kit was inserted at the left side of the umbilicus. After tube insertion into the jejunum, the jejunostomy tube was wrapped with four interrupted sutures using the Witzel technique. Suture threads were extracted by percutaneous insertion of a loop needle device, and then, the jejunum was fixed to the abdominal wall. The post-operative course was uneventful. Percutaneous insertion of a loop needle device is useful for fixing a jejunostomy tube to the abdominal wall using the Witzel technique. Our technique is safe, secure and expected to reduce the risk of dislodgement of tube and peritonitis associated with jejunostomy tube placement.
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- 2024
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99. Caption-Guided Interpretable Video Anomaly Detection Based on Memory Similarity
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Yuzhi Shi, Takayoshi Yamashita, Tsubasa Hirakawa, Hironobu Fujiyoshi, Mitsuru Nakazawa, Yeongnam Chae, and Bjorn Stenger
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Caption-guidance ,sentence similarity ,video anomaly detection ,Electrical engineering. Electronics. Nuclear engineering ,TK1-9971 - Abstract
Most video anomaly detection approaches are based on non-semantic features, which are not interpretable, and prevent the identification of anomaly causes. Therefore, we propose a caption-guided interpretable video anomaly detection framework that explains the prediction results based on video captions (semantic). It utilizes non-semantic features to fit the dataset and semantic features to provide common sense and interpretability to the model. It automatically stores representative anomaly prototypes and uses them to guide the model based on similarity with these prototypes. Specifically, we use video memory to represent the content of videos, which includes video features (non-semantic) and caption information (semantic). The proposed method generates and updates a memory space during training, and predicts anomaly scores based on the memory similarities between the input video and the stored memories. The stored captions can be used as descriptions of representative anomaly actions. The proposed module can be easily integrated with existing methods. The interpretability and reliable detection performance of the proposed method are evaluated through extensive experiments on public benchmark datasets.
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- 2024
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100. Risk Factors for Stoma Outlet Obstruction after Proctocolectomy for Ulcerative Colitis
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Keisuke Ihara, Takatoshi Nakamura, Masashi Takayanagi, Junki Fujita, Yasunori Maeda, Yusuke Nishi, Norisuke Shibuya, Hiroyuki Hachiya, Mitsuru Ishizuka, Keiichi Tominaga, Kazuyuki Kojima, and Atsushi Irisawa
- Subjects
stoma outlet obstruction ,ulcerative colitis ,risk factor ,diverting ileostomy ,postoperative complication ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Objectives: Stoma outlet obstruction (SOO) occurs with an incidence of approximately 40% after proctocolectomy for Ulcerative colitis (UC) with diverting ileostomy. This study aimed to identify the risk factors for SOO after proctocolectomy with diverting ileostomy for patients with UC. Methods: We reviewed the data of 68 patients with UC who underwent proctocolectomy and diverting ileostomy between April 2006 and September 2021. These cases were analyzed on the basis of clinicopathological and anatomical factors. SOO was defined as small bowel obstruction displaying symptoms of intestinal obstruction, such as abdominal distention, abdominal pain, insertion of a tube through the stoma. Results: The study included 38 (56%) men and 30 (44%) women with a median age of 42 years (range, 21-80). SOO categorized as at least Clavien-Dindo grade II occurred in 11 (16%) patients. Six patients required earlier stoma closure than scheduled. Compared with patients without SOO, patients with SOO had a significantly higher total steroid dose from the onset of UC to surgery (p = 0.02), a small amount of intraabdominal fat (p = 0.04), and a higher rate of laparoscopic surgery (p < 0.01). Conclusions: A high preoperative steroid dose, a small amount of intraabdominal fat and laparoscopic surgery were identified as risk factors for SOO. Early detection and treatment for SOO are important for patients at risk.
- Published
- 2024
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