1.Three-dimensional shape of human skeletal muscle as a determinant of muscle strength
Jun UMEHARA ; Masashi TANIGUCHI ; Masahide YAGI ; Ganping LI ; Mazen SOUFI ; Yoshito OTAKE ; Yoshinobu SATO ; Yoshihiro FUKUMOTO ; Momoko YAMAGATA ; Ryusuke NAKAI ; Noriaki ICHIHASHI
Japanese Journal of Physical Fitness and Sports Medicine 2025;74(1):106-106
2.Sarcopenia as a Robust Predictor of Readmission within 6 Months among Individuals Experiencing Acute Stroke
Takafumi ABE ; Yoshihiro YOSHIMURA ; Yoichi SATO ; Fumihiko NAGANO ; Ayaka MATSUMOTO
Annals of Geriatric Medicine and Research 2024;28(3):307-314
Background:
Sarcopenia negatively affects the short-term prognosis of hospitalized older adults. However, no evidence currently supports a direct relationship between sarcopenia and readmission among individuals who have experienced an acute stroke. Therefore, we investigated whether sarcopenia is associated with readmission after discharge.
Methods:
This retrospective cohort study included patients who had experienced acute stroke. Sarcopenia was defined as the coexistence of low skeletal muscle mass index (SMI) and grip strength. We applied the log-rank test and Cox proportional hazards regression analysis to analyze whether sarcopenia, low SMI, and low grip strength were associated with readmission within 6 months.
Results:
Among 228 included patients (mean age, 72.8 years; 146 males), the prevalence of sarcopenia was 24.6% (n=56; male 17.8%; female 36.6%). Cox proportional hazards regression analysis using the propensity score as a covariate revealed that sarcopenia (hazard ratio [HR]=7.21; 95% confidence interval [CI] 1.45–35.8; p=0.016) and low skeletal muscle mass (HR=7.40; 95% CI 1.14–48.1; p=0.036), but not low grip strength (HR=1.42; 95% CI 0.281–7.21; p=0.670), were significantly associated with readmission for stroke within 6 months.
Conclusions
Sarcopenia was negatively associated with readmission within 6 months of stroke onset in patients in Japan who had experienced an acute stroke. These findings suggest that the identification of sarcopenia may facilitate prognostic prediction from the acute stage and intervention(s) to prevent rehospitalization.
3.Improvements in Intractable Lumbar and LowerExtremity Symptoms after Systemic Administration of Tocilizumab, an Anti-interleukin-6 Receptor Antibody
Takeshi SAINOH ; Takeshi SAINOH ; Sumihisa ORITA ; Sumihisa ORITA ; Masayuki MIYAGI ; Masayuki MIYAGI ; Miyako SUZUKI-NARITA ; Miyako SUZUKI-NARITA ; Yoshihiro SAKUMA ; Yoshihiro SAKUMA ; Yasuhiro OIKAWA ; Yasuhiro OIKAWA ; Go KUBOTA ; Go KUBOTA ; Jun SATO ; Jun SATO ; Yasuhiro SHIGA ; Yasuhiro SHIGA ; Kazuki FUJIMOTO ; Kazuki FUJIMOTO ; Yawara EGUCHI ; Yawara EGUCHI ; Masao KODA ; Masao KODA ; Yasuchika AOKI ; Yasuchika AOKI ; Tsutomu AKAZAWA ; Tsutomu AKAZAWA ; Takeo FURUYA ; Takeo FURUYA ; Junichi NAKAMURA ; Junichi NAKAMURA ; Hiroshi TAKAHASHI ; Hiroshi TAKAHASHI ; Satoshi MAKI ; Satoshi MAKI ; Masahiro INOUE ; Masahiro INOUE ; Hideyuki KINOSHITA ; Hideyuki KINOSHITA ; Masaki NORIMOTO ; Masaki NORIMOTO ; Takashi SATO ; Takashi SATO ; Masashi SATO ; Masashi SATO ; Masahiro SUZUKI ; Masahiro SUZUKI ; Keigo ENOMOTO ; Keigo ENOMOTO ; Hiromitsu TAKAOKA ; Hiromitsu TAKAOKA ; Norichika MIZUKI ; Norichika MIZUKI ; Takashi HOZUMI ; Takashi HOZUMI ; Ryuto TSUCHIYA ; Ryuto TSUCHIYA ; Geundong KIM ; Geundong KIM ; Takuma OTAGIRI ; Takuma OTAGIRI ; Tomohito MUKAIHATA ; Tomohito MUKAIHATA ; Takahisa HISHIYA ; Takahisa HISHIYA ; Seiji OHTORI ; Seiji OHTORI ; Kazuhide INAGE ; Kazuhide INAGE
Asian Spine Journal 2022;16(1):99-106
Methods:
This prospective, single-arm study included 11 patients (eight men; mean age, 62.7 years) with ≥3-months’ chronic pain history due to lumbar disease. Subcutaneous TCZ injections were administered twice, at a 2-week interval. We evaluated low back pain, leg pain, and leg numbness using numeric rating scales and the Oswestry Disability Index (ODI; baseline and 6 months postinjection); serum IL-6 and tumor necrosis factor-α levels (baseline and 1 month postinjection); and clinical adverse events.
Results:
Intractable symptoms reduced after TCZ administration. Low back pain improved for 6 months. Improvements in leg pain and numbness peaked at 4 and 1 month, respectively. Improvements in ODI were significant at 1 month and peaked at 4 months. Serum IL-6 was increased at 1 month. IL-6 responders (i.e., patients with IL-6 increases >10 pg/mL) showed particularly significant improvements in leg pain at 2 weeks, 1 month, and 2 months compared with nonresponders. We observed no apparent adverse events.
Conclusions
Systemic TCZ administration improved symptoms effectively for 6 months, with peak improvements at 1–4 months and no adverse events. Changing serum IL-6 levels correlated with leg pain improvements; further studies are warranted to elucidate the mechanistic connections between lumbar disorders and inflammatory cytokines.
4.9-4 Education Given at Jichi Medical University's Dormitory during the COVID-19 Pandemic: Strategies and Challenges in a Boarding Medical College
Yosikazu NAKAMURA ; Yoshihiro ITAI ; Nobuko MAKINO ; Masaaki SATO ; Shigeo NAGASHIMA ; Yukiko ISHIKAWA ; Kenji KUROIWA ; Teppei SASAHARA ; Yasuko NODA ; Masami MATSUMURA ; Shizukiyo ISHIKAWA ; Masanori OGAWA ; Akinori YAMABE ; Yoshikazu ASADA
Medical Education 2020;51(3):306-307
5.A Case Report of Pyoderma Chronica Capillitii Successfully Treated with Shokenchuto and Hainosankyuto
Kampo Medicine 2019;70(1):47-51
We report a case of pyoderma chronica capillitii successfully treated with shokenchuto. The patient was a 20-year-old man, who had been suffering from an abscess and hair loss in the occipital region of his scalp for the past 6 months ; the lesion was gradually enlarging and was 3×3 cm in diameter at presentation. He was diagnosed with pyoderma chronica capillitii by a dermatologist and treated with puncture and drainage, multiple courses of oral antibiotics, and focal injections of tetracycline twice, with no beneficial response. Furthermore, another similar abscess with hair loss appeared on his occipital scalp and a new similar nodule appeared on his right cheek. He consulted my clinic to receive Kampo therapy. His abdominal examination revealed spasm of the bilateral rectus abdominis ; his abdomen was remarkably hypersensitive. He felt tickling intensely on abdominal palpation. Based on these findings, he was treated with shokenchuto, and hainosankyuto was added to relieve his symptoms. After a month of therapy, the nodule on his cheek disappeared, and several months later, the two occipital lesions improved and growth of new hair was noted. With continued treatment, his scalp and hair lesions healed completely and no recurrence was noted. To our knowledge, there is no previous report on the treatment of pyoderma chronica capillitii with shokenchuto. Based on the Kampo diagnostic pattern, Kampo medicine can be a beneficial therapeutic option for pyoderma chronica in cases where standard treatments are ineffective.
6.Development and Evaluation of a Multi-Functional Drug Discrimination System Mounted with Automatic Data Analysis of the Clinical Examination Values for Medications Brought to Hospital
Yoshihiro Kiryu ; Naomi Honma ; Taeko Yoshino ; Yuriko Murai ; Ten Sobue ; Yoshitomo Sato
Japanese Journal of Drug Informatics 2017;19(1):8-16
Objective: Numerous new drugs have been developed in recent years, making the available types of prescription drugs quite diverse, with increasingly more complex drug interactions. From an operations support system perspective, hospitals that cannot incorporate a large-scale custom-order system because of financial or use-efficiency limitations have no choice but to rely on commercial products. However, this leaves many problems unsolved, such as functional restrictions and limited specifications. In this study, we used Microsoft®Visual Basic®for Application (VBA) to develop an economical drug discrimination system suited to our situation and equipped with original function from the perspective of clinical pharmacists.
Design: System design and development.
Methods: We prototyped the system in VBA and used Microsoft®Excel®to create Query Tables. The utility of the new system was evaluated based on drug discrimination output and time required in each process.
Results: The new system is capable of inter-database communication and automated data analysis and uses drop-down lists of pre-defined options for data input in many places. Compared with the conventional method, the new system enabled us to significantly reduce the average time needed to input and confirm data by as much as 61.9%. This indicates that the new system can considerably reduce the time required for completing time-intensive processes and is also useful in preparing highly precise drug discrimination reports.
Conclusion: Based on the results obtained so far, the new, original system, developed with zero design or development costs, is more efficient and offers more reliable information in the clinical setting than the conventional system. As a result, we are able to maintain operational quality and reduce the amount of time required for drug discrimination.
7.Evaluation of Histological Changes in Back Muscle Injuries in Rats over Time.
Koki ABE ; Kazuhide INAGE ; Yoshihiro SAKUMA ; Sumihisa ORITA ; Kazuyo YAMAUCHI ; Miyako SUZUKI ; Go KUBOTA ; Yasuhiro OIKAWA ; Takeshi SAINOH ; Jun SATO ; Kazuki FUJIMOTO ; Yasuhiro SHIGA ; Hirohito KANAMOTO ; Kazuhisa TAKAHASHI ; Seiji OHTORI
Asian Spine Journal 2017;11(1):88-92
STUDY DESIGN: Animal model study. PURPOSE: The purpose of this study was to evaluate the histological variation in the injured muscle and production of calcitonin gene-related peptide in rats over time. OVERVIEW OF LITERATURE: Vertebral surgery has been reported to cause atrophy of the back muscles, which may result in pain. However, few reports have described the time series histological variation in the injured muscle and changes in the dominant nerve. METHODS: We used 30 male, 8-week-old Sprague-Dawley rats. The right and left sides of the paravertebral muscle were considered as the injured and uninjured sides, respectively. A 115 g weight was dropped from a height of 1 m on the right paravertebral muscle. Hematoxylin and eosin (H&E) staining of the muscle was performed 1–3 weeks after injury for histological evaluation. Fluoro-Gold (FG) was injected into the paravertebral muscle. The L2 dorsal root ganglia on both sides were resected 1, 2, and 3 weeks after injury, and immunohistochemical staining for calcitonin gene-related peptide was performed. RESULTS: H&E staining of the paravertebral muscle showed infiltration of inflammatory cells and the presence of granulation tissue in the injured part on the ipsilateral side 1 week after injury. Muscle atrophy occurred 3 weeks after injury, but was repaired via spontaneous replacement of muscle cells/fibers. In contrast, compared with the uninjured side, the percentage of cells double-labeled with FG and calcitonin gene-related peptide in FG-positive cells in the dorsal root ganglia of the injured side was significantly increased at each time point throughout the study period. CONCLUSIONS: These results suggest that sensitization of the dominant nerve in the dorsal root ganglia, which may be caused by cicatrix formation, can protract injured muscle pain. This information may be helpful in elucidating the underlying mechanism of persistent pain after back muscle injury.
Animals
;
Atrophy
;
Back Muscles*
;
Calcitonin Gene-Related Peptide
;
Cicatrix
;
Eosine Yellowish-(YS)
;
Ganglia, Sensory
;
Ganglia, Spinal
;
Granulation Tissue
;
Hematoxylin
;
Humans
;
Male
;
Models, Animal
;
Muscular Atrophy
;
Myalgia
;
Rats*
;
Rats, Sprague-Dawley
;
Spine
8.Correlation among Inflammatory Cytokine Expression Levels, Degree of Disk Degeneration, and Predominant Clinical Symptoms in Patients with Degenerated Intervertebral Discs.
Takeshi SAINOH ; Kazuhide INAGE ; Sumihisa ORITA ; Masao KODA ; Takeo FURUYA ; Kazuyo YAMAUCHI ; Miyako SUZUKI ; Yoshihiro SAKUMA ; Go KUBOTA ; Yasuhiro OIKAWA ; Jun SATO ; Kazuki FUJIMOTO ; Yasuhiro SHIGA ; Koki ABE ; Hirohito KANAMOTO ; Masahiro INOUE ; Hideyuki KINOSHITA ; Masaki NORIMOTO ; Tomotaka UMIMURA ; Kazuhisa TAKAHASHI ; Seiji OHTORI
Asian Spine Journal 2017;11(3):472-477
STUDY DESIGN: Observational study. PURPOSE: To assess the correlation among inflammatory cytokine expression levels, degree of intervertebral disk (IVD) degeneration, and predominant clinical symptoms observed in degenerative disk disease (DDD). OVERVIEW OF LITERATURE: Low back pain (LBP) is associated with inflammatory cytokine expression levels, including those of tumor necrosis factor-alpha (TNF-α), interleukin 6 (IL-6), and nerve growth factor (NGF). However, the association between cytokine expression levels and the physiological mechanisms of disk degeneration and clinical pain remain controversial. METHODS: Using the enzyme-linked immunosorbent assay, TNF-α, IL-6, and NGF expression levels were analyzed in 58 IVD samples that were harvested from patients with lumbar DDD. Patient samples were grouped according to the degree of IVD degeneration using the Pfirrmann grading system and magnetic resonance imaging, and the correlations between the disease groups and each cytokine expression level were assessed. In addition, on the basis of their predominant preoperative symptoms, the patients were assigned to either an LBP or leg pain group to determine the correlation among these disease manifestations and individual cytokine expression levels. RESULTS: A gradual increase in TNF-α (R=0.391) and IL-6 (R=0.388) expression levels correlated with the degree of IVD degeneration, whereas NGF (R=0.164) expression levels exhibited a minimal decrease with disease progression. Regarding the predominant clinical manifestation, only the LBP group exhibited a significant increase in TNF-α expression levels (p=0.002). CONCLUSIONS: These results suggested that TNF-α and IL-6 play an important role in the pathophysiology of IVD degeneration at any stage, whereas NGF plays an important role during the early disease stages. Moreover, because TNF-α expression levels were significantly high in the LBP group, we propose that they are involved in LBP onset or progression.
Dichlorodiphenyldichloroethane
;
Disease Progression
;
Enzyme-Linked Immunosorbent Assay
;
Humans
;
Interleukin-6
;
Intervertebral Disc Degeneration*
;
Intervertebral Disc*
;
Leg
;
Low Back Pain
;
Magnetic Resonance Imaging
;
Nerve Growth Factor
;
Observational Study
;
Tumor Necrosis Factor-alpha
9.Inhibiting Vascular Endothelial Growth Factor in Injured Intervertebral Discs Attenuates Pain-Related Neuropeptide Expression in Dorsal Root Ganglia in Rats.
Jun SATO ; Kazuhide INAGE ; Masayuki MIYAGI ; Yoshihiro SAKUMA ; Kazuyo YAMAUCHI ; Masao KODA ; Takeo FURUYA ; Junichi NAKAMURA ; Miyako SUZUKI ; Go KUBOTA ; Yasuhiro OIKAWA ; Takeshi SAINOH ; Kazuki FUJIMOTO ; Yasuhiro SHIGA ; Koki ABE ; Hirohito KANAMOTO ; Masahiro INOUE ; Hideyuki KINOSHITA ; Masaki NORIMOTO ; Tomotaka UMIMURA ; Kazuhisa TAKAHASHI ; Seiji OHTORI ; Sumihisa ORITA
Asian Spine Journal 2017;11(4):556-561
STUDY DESIGN: An experimental animal study. PURPOSE: To evaluate effects of anti-vascular endothelial growth factor (VEGF) on the content and distribution of the calcitonin gene-related peptide (CGRP) in the dorsal ganglia in a rat model. OVERVIEW OF LITERATURE: Increased expression of VEGF in degenerative disc disease increases the levels of inflammatory cytokines and nerve ingrowth into the damaged discs. In animal models, increased levels of VEGF can persist for up to 2 weeks after an injury. METHODS: Through abdominal surgery, the dorsal root ganglia (DRG) innervating L5/L6 intervertebral disc were labeled (FluoroGold neurotracer) in 24, 8-week old Sprague Dawley rats. The rats were randomly allocated to three groups of eight rats each. The anti-VEGF group underwent L5/6 intervertebral disc puncture using a 26-gauge needle, intradiscal injection of 33.3 µg of the pegaptanib sodium, a VEGF165 aptamer. The control-puncture group underwent disc puncture and intradiscal injection of 10 µL saline solution, and the sham-surgery group underwent labeling but no disc puncture. Two rats in each group were sacrificed on postoperative days 1, 7, 14, and 28 after surgery. L1–L6 DRGs were harvested, sectioned, and immunostained to detect the content and distribution of CGRP. RESULTS: Compared with the control, the percentage of CGRP-positive cells was lower in the anti-VEGF group (p<0.05; 40.6% and 58.1% on postoperative day 1, 44.3% and 55.4% on day 7, and 42.4% and 59.3% on day 14). The percentage was higher in the control group compared with that of the sham group (p<0.05; sham group, 34.1%, 40.7%, and 33.7% on postoperative days 1, 7, and 14, respectively). CONCLUSIONS: Decreasing CGRP-positive cells using anti-VEGF therapy provides fundamental evidence for a possible therapeutic role of anti-VEGF in patients with discogenic lower back pain.
Animals
;
Back Pain
;
Calcitonin Gene-Related Peptide
;
Cytokines
;
Diagnosis-Related Groups
;
Endothelial Growth Factors
;
Ganglia
;
Ganglia, Spinal*
;
Humans
;
Intervertebral Disc*
;
Low Back Pain
;
Models, Animal
;
Needles
;
Neuropeptides*
;
Punctures
;
Rats*
;
Rats, Sprague-Dawley
;
Sodium
;
Sodium Chloride
;
Spinal Nerve Roots*
;
Vascular Endothelial Growth Factor A*
10.Long-Term Outcomes of In Situ Fusion for Treating Dysplastic Spondylolisthesis.
Kazuhide INAGE ; Sumihisa ORITA ; Kazuyo YAMAUCHI ; Miyako SUZUKI ; Yoshihiro SAKUMA ; Go KUBOTA ; Yasuhiro OIKAWA ; Takeshi SAINOH ; Jun SATO ; Kazuki FUJIMOTO ; Yasuhiro SHIGA ; Koki ABE ; Hirohito KANAMOTO ; Masahiro INOUE ; Hideyuki KINOSHITA ; Masaki NORIMOTO ; Tomotaka UMIMURA ; Kazuhisa TAKAHASHI ; Seiji OHTORI
Asian Spine Journal 2017;11(2):213-218
STUDY DESIGN: Retrospective, observational, single-center study. PURPOSE: To investigate the long-term outcomes of in situ fusion procedures for treating dysplastic spondylolisthesis. OVERVIEW OF LITERATURE: In situ fusion performed in patients with dysplastic spondylolisthesis avoids the development of nerve complications. METHODS: In total, 12 of 28 patients who underwent in situ fusion for treating dysplastic spondylolisthesis at Chiba University Hospital from 1974 to 2004 were followed up in August 2013. Surgical complications were evaluated. Low back pain and leg pain were assessed using a visual analog scale (VAS). Vertebral alignment, including the lumbosacral angle and lumbar lordosis angle measurement on radiographic images (profile view in the neutral standing position), was evaluated during preoperative, postoperative, and final examinations. RESULTS: The mean follow-up duration, patient age at the final examination, and patient age at operation were 20.0±7.2, 42.3±13.3, and 22.3±11.4 years, respectively. No complications were reported. Mean VAS scores for low back pain and leg pain were significantly lower at the final examination than at the preoperative examination (p<0.05). At the preoperative, postoperative, and final examinations, the mean lumbosacral angle was 32.3°±14.2°, 33.7°±11.8°, and 36.5°±16.4°, while the mean lumbar lordosis angle was 51.0°±14.8°, 48.6°±18.8°, and 49.6°±15.5°, respectively. No significant differences were noted among these values across the different time periods (p<0.05). CONCLUSIONS: In situ fusion performed in patients with dysplastic spondylolisthesis avoids the development of nerve complications such as nerve paralysis that may occur after repositioning operation and maintains appropriate long-term sagittal alignment, even 20 years after operation.
Animals
;
Follow-Up Studies
;
Humans
;
Leg
;
Lordosis
;
Low Back Pain
;
Paralysis
;
Retrospective Studies
;
Spondylolisthesis*
;
Visual Analog Scale


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