1.Cross-Sectional and Longitudinal Associations between Forearm Bone Mineral Density and Anthropometry in Adult Japanese Men and Women
Masahiro ISHIZAWA ; Kazuya FUJIHARA ; Junko YACHIDA ; Izumi IKEDA ; Takaaki SATO ; Takaho YAMADA ; Ayako KOBAYASHI ; Shiro TANAKA ; Yoshimi NAKAGAWA ; Takashi MATSUZAKA ; Hitoshi SHIMANO ; Minoru TASHIRO ; Satoru KODAMA ; Kiminori KATO ; Hirohito SONE
Journal of Bone Metabolism 2024;31(1):21-30
Background:
No consensus exists regarding which anthropometric measurements are related to bone mineral density (BMD), and this relationship may vary according to sex and age. A large Japanese cohort was analyzed to provide an understanding of the relationship between BMD and anthropometry while adjusting for known confounding factors.
Methods:
Our cohort included 10,827 participants who underwent multiple medical checkups including distal forearm BMD scans. Participants were stratified into four groups according to age (≥50 years or <50 years) and sex. The BMD values were adjusted for confounding factors, after which single and partial correlation analyses were performed. The prevalence of osteopenia was plotted for each weight index (weight or body mass index [BMI]) class.
Results:
Cross-sectional studies revealed that weight was more favorably correlated than BMI in the older group (R=0.278 and 0.212 in men and R=0.304 and 0.220 in women, respectively), whereas weight and BMI were weakly correlated in the younger age groups. The prevalence of osteopenia exhibited a negative linear relationship with weight among older women ≥50 years of age, and an accelerated increase was observed with decreasing weight in older men weighing <50 kg and younger women weighing <60 kg. When weight was replaced with BMI, the prevalence was low in most subgroups classified by weight.
Conclusions
Weight, rather than BMI, was the most important indicator of osteopenia but it might not be predictive of future bone loss.
2.Treatment Strategy for Leriche Syndrome Complicated with Ischemic Heart Disease
Jun HAYASHI ; Tetsuro UCHIDA ; Yoshinori KURODA ; Eiichi OHBA ; Masahiro MIZUMOTO ; Atsushi YAMASHITA ; Shingo NAKAI ; Kimihiro KOBAYASHI ; Tomonori OCHIAI
Japanese Journal of Cardiovascular Surgery 2021;50(4):283-286
Leriche syndrome is often complicated with ischemic heart disease (IHD). In such cases, as the internal mammary artery (IMA) supplies blood to the lower-limbs through a collateral network, coronary artery bypass grafting (CABG) using IMA is considered to worsen the lower-limb ischemia and use of intra-aortic balloon pumping prior to lower limb revascularization is not possible. Recent advances in endovascular technology enable us to perform endovascular treatment (EVT) even in Leriche syndrome. In 3 patients diagnosed with Leriche syndrome associated with IHD, tailor-made treatments were performed as one-stage or two-stage surgeries. Various techniques such as percutaneous coronary intervention (PCI), CABG, and open surgical revascularization or EVT of lower limbs were employed. EVT is a less invasive and more attractive alternative to open surgical revascularization, it led to new treatment options in patients with this particular circumstance. Considering the severity of pathophysiology, treatment strategy should be determined on a case-by-case basis.
3.Preventive Innominate Artery Transection for a High-Risk Case of Tracheo-Innominate Artery Fistula
Masahiro MIZUMOTO ; Tetsuro UCHIDA ; Yoshinori KURODA ; Atsushi YAMASHITA ; Eiichi OBA ; Jun HAYASHI ; Shingo NAKAI ; Kimihiro KOBAYASHI ; Tomonori OCHIAI
Japanese Journal of Cardiovascular Surgery 2021;50(5):337-341
An 18-year-old man with hypoxic encephalopathy was admitted because of recurrent minor bleeding a tracheal stoma, which was suspected as a tracheo-innominate artery fistula (TIF). He had undergone tracheostomy and gastrostomy 2 years prior and had mild opisthotonos and scoliosis. Although tracheal endoscopy showed no tracheal mucosal erosion, necrosis, or granulation tissue formation, contrast-enhanced computed tomography (CT) revealed a close contact between the innominate artery and the anterior wall of the trachea, and an equal height between the innominate artery and the tip of the tracheal cannula. Magnetic resonance angiography of the head showed dominant intracranial blood flow from the left internal carotid and vertebral arteries. Preventive innominate artery transection through the supra-sternal approach without sternotomy or reconstruction of the innominate artery was performed for this high-risk case of TIF. The patient's postoperative course was uneventful. Postoperative CT revealed that the innominate artery was transected and isolated from the site of tracheostomy. The preserved connection between the right common carotid and subclavian artery at the distal sutured stump helped maintain blood flow in the right internal and middle cerebral arteries. The patient was discharged on postoperative day 9 without any new neurological complications or bleeding from a tracheal stoma. TIF is a rare but fatal complication after laryngotracheal separation or tracheostomy. It is important to prevent the onset of TIF, however, there are no criteria for preventive innominate artery transection. Our preventive innominate artery transection through the supra-sternal approach is considered as one of the useful surgical treatment for high-risk cases of TIF accompanied by severe neuromuscular disorders.
4.End-stage Treatment of a Patient with Progressive Supranuclear Palsy and Severe Retroflexion of the Neck -Improvement in Retroflexion of the Neck by Botulinum Therapy: A Case Report-
Masahiro HAYASHI ; Katsuji KOBAYASHI
An Official Journal of the Japan Primary Care Association 2018;41(3):125-128
Progressive supranuclear palsy (PSP) comprises psychiatric, neurological and physical complications. In the late stage, most patients with PSP are bed-bound because of motor disability. PSP manifests as predominantly axial abnormality in posture and abnormal muscle tone, resulting in cervical retroflexion and somatic pains. Severe retroflexion of the neck is frequently a cause of repeated aspiration pneumonia that affects survival expectancy. We injected botulinum toxin (BTX) for severe retroflexion using a CT-guided procedure to confirm the anatomical locations of paravertebral muscles and to localize the paravertebral target muscles for a patient with PSP who had repeated pneumonia caused by retroflexion-related dysphagia. BTX injection treatment markedly ameliorated the cervical dystonia and concomitant dysphagia. The patient has recovered and may be able to be discharged to home. There are few reports on the BTX injection technique, but BTX has analgesic effects and induces relaxation of abnormal muscle tension. Therefore, it may be applicable to other movement disorders at the late stage.
5.Noninvasive Assessment of Advanced Fibrosis Based on Hepatic Volume in Patients with Nonalcoholic Fatty Liver Disease.
Tatsuya HAYASHI ; Satoshi SAITOH ; Kei FUKUZAWA ; Yoshinori TSUJI ; Junji TAKAHASHI ; Yusuke KAWAMURA ; Norio AKUTA ; Masahiro KOBAYASHI ; Kenji IKEDA ; Takeshi FUJII ; Tosiaki MIYATI ; Hiromitsu KUMADA
Gut and Liver 2017;11(5):674-683
BACKGROUND/AIMS: Noninvasive liver fibrosis evaluation was performed in patients with nonalcoholic fatty liver disease (NAFLD). We used a quantitative method based on the hepatic volume acquired from gadoxetate disodium-enhanced (Gd-EOB-DTPA-enhanced) magnetic resonance imaging (MRI) for diagnosing advanced fibrosis in patients with NAFLD. METHODS: A total of 130 patients who were diagnosed with NAFLD and underwent Gd-EOB-DTPA-enhanced MRI were retrospectively included. Histological data were available for 118 patients. Hepatic volumetric parameters, including the left hepatic lobe to right hepatic lobe volume ratio (L/R ratio), were measured. The usefulness of the L/R ratio for diagnosing fibrosis ≥F3–4 and F4 was assessed using the area under the receiver operating characteristic (AUROC) curve. Multiple regression analysis was performed to identify variables (age, body mass index, serum fibrosis markers, and histological features) that were associated with the L/R ratio. RESULTS: The L/R ratio demonstrated good performance in differentiating advanced fibrosis (AUROC, 0.80; 95% confidence interval, 0.72 to 0.88) from cirrhosis (AUROC, 0.87; 95% confidence interval, 0.75 to 0.99). Multiple regression analysis showed that only fibrosis was significantly associated with the L/R ratio (coefficient, 0.121; p<0.0001). CONCLUSIONS: The L/R ratio, which is not influenced by pathological parameters other than fibrosis, is useful for diagnosing cirrhosis in patients with NAFLD.
Body Mass Index
;
Fibrosis*
;
Humans
;
Liver Cirrhosis
;
Magnetic Resonance Imaging
;
Methods
;
Non-alcoholic Fatty Liver Disease*
;
Retrospective Studies
;
ROC Curve
6.Relationships between Genetic Variations of PNPLA3, TM6SF2 and Histological Features of Nonalcoholic Fatty Liver Disease in Japan.
Norio AKUTA ; Yusuke KAWAMURA ; Yasuji ARASE ; Fumitaka SUZUKI ; Hitomi SEZAKI ; Tetsuya HOSAKA ; Masahiro KOBAYASHI ; Mariko KOBAYASHI ; Satoshi SAITOH ; Yoshiyuki SUZUKI ; Kenji IKEDA ; Hiromitsu KUMADA
Gut and Liver 2016;10(3):437-445
BACKGROUND/AIMS: It is important to determine the noninvasive parameters of histological features in nonalcoholic fatty liver disease (NAFLD). The aim of this study was to investigate the value of genetic variations as surrogate markers of histological features. METHODS: The parameters that affected the histological features of NAFLD were investigated in 211 Japanese patients with biopsy-proven NAFLD. The relationships between genetic variations in PNPLA3 rs738409 or TM6SF2 rs58542926 and histological features were analyzed. Furthermore, the impact of genetic variations that affected the pathological criteria for the diagnosis of nonalcoholic steatohepatitis (NASH) (Matteoni classification and NAFLD activity score) was evaluated. RESULTS: The fibrosis stage of PNPLA3 GG was significantly more progressive than that of CG by multiple comparisons. Multivariate analysis identified PNPLA3 genotypes as predictors of fibrosis of stage 2 or more, but the impact tended to decrease at stage 3 or greater. There were no significant differences among the histological features of the three genotypes of TM6SF2. PNPLA3 genotypes partly affected the definition of NASH by the NAFLD activity score, but TM6SF2 genotypes did not affect the definition of NASH. CONCLUSIONS: In Japanese patients with biopsy-proven NAFLD, PNPLA3 genotypes may partly affect histological features, including stage of fibrosis, but the TM6SF2 genotype does not affect histological features.
Asian Continental Ancestry Group
;
Biological Markers
;
Classification
;
Diagnosis
;
Fatty Liver*
;
Fibrosis
;
Genetic Variation*
;
Genotype
;
Humans
;
Japan*
;
Multivariate Analysis
7.Clinical Efficacy of a Double Injection Protocol of Botulinum Toxin Type A for Upper Limb Hemiparesis after Stroke
Toru TAKEKAWA ; Takatoshi HARA ; Wataru KAKUDA ; Kazushige KOBAYASHI ; Yousuke SASE ; Masahiro ABO
The Japanese Journal of Rehabilitation Medicine 2014;51(1):38-46
Background : The aim of this study was to assess the effects of repeated injections of botulinum toxin type A (BoNT-A) combined with a rehabilitative program for treating spastic upper limb hemiparesis after stroke. Subjects and methods: Subjects were 112 poststroke hemiparetic patients with spastic upper limb (mean age : 55.5±11.6 years ±SD, mean period between onset and first injection : 5.1±3.5 years). For each patient, BoNT-A (maximum dose of each injection : 240 units) was injected in the spastic muscles of the affected upper limb twice with a minimum interval of 3 months. Following each injection, detailed one-to-one instructions for homebased functional training was provided. At the baseline (before injection) and at 1 and 3 month follow-ups after each injection, the patient's modified Ashworth scale (MAS), the range of motion (ROM) and Fugl-Meyer Assessment (FMA) were evaluated. Results : The total score for the upper limb and the scores of categories A and B of the FMA increased significantly not only after the first injection but after the second injection compared with the second baseline, while the FMA score for category D increased significantly only after the second injection. MAS also decreased significantly not only after the first injection but after the second injection compared to the second baseline. Conclusion : A more significant improvement was found not only in muscle spasticity but also in upper limb motor function after two BoNT-A injections. It is suggested that repeated BoNT-A injections followed by a comprehensive rehabilitative program would be an effective treatment for limb spasticity after a stroke.
8.Regional Cerebral Blood Flow (rCBF) after Low-frequency Repetitive Transcranial Magnetic Stimulation (rTMS) Combined with Intensive Occupational Therapy for Upper Limb Hemiplegia after Stroke : A Study using Single Photon Emission Computed Tomography
Takatoshi HARA ; Wataru KAKUDA ; Kazushige KOBAYASHI ; Ryo MOMOZAKI ; Masachika NIIMI ; Masahiro ABO
The Japanese Journal of Rehabilitation Medicine 2013;50(1):36-42
We performed a 15 day protocol of low-frequency repetitive transcranial magnetic stimulation (rTMS) combined with intensive occupational therapy in hemiplegic upper limbs in poststroke and investigated the effect of cerebral blood flow using single photon emission computed tomography (SPECT). Seventeen chronic stroke patients were studied with SPECT at rest before and 4 weeks after undergoing the 15 day protocol. Before and after the treatment, Fugl-Meyer Assessment (FMA) score and Wolf Motor Function Test (WMFT) -Log performance time showed a significant improvement. The specific areas with a significant increase in perfusion in the affected hemisphere were the insula (BA 13), the precentral gyrus (BA 44) and the cerebellum. In the nonaffected hemisphere, perfusion was significantly increased in the lingual gyrus and cerebellum. On the other hand, perfusion was significantly decreased in the middle frontal gyrus (BA 6), precentral gyrus (BA 4) and postcentral gyrus (BA 3) in the nonaffected hemisphere. It was suggested that low-frequency rTMS combined with intensive occupational therapy effects the cerebral blood flow and contributes to improving upper limb hemiplegia after stroke.
9.Using a Self-help Intermittent Balloon Catheter Device in Paraplegia with Palsy in Both Ulnar Nerves
Kentaro KOBAYASHI ; Masahiro ABO
The Japanese Journal of Rehabilitation Medicine 2013;50(5):334-338
We report the use of a self-help intermittent balloon catheter device in paraplegia with palsy in both ulnar nerves. A 77-year-old man developed paraplegia and neurogenic bladder dysfunction following postoperative complication of a thoracic aortic aneurysm. Palsy in both ulnar nerves was found in the medical history. Self-catheterization was necessary as urination control for neurogenic bladder dysfunction using an intermittent balloon catheter for nocturia. However, it was difficult for the patient to grasp the reservoir and inject fixed water into the balloon, and to clamp it while maintaining injection due to the ulnar nerve palsy. In addition, the clamp was easily dislodged by nighttime patient rolling, and the reservoir caused insomnia. Therefore, we removed the clamp and the reservoir and we installed an FF connector and a closed needleless connector and used a lock-syringe for fixative infusion. Subsequently, patient self-operation became easy, and the clamp did not come off when the lock-syringe was removed, and the patient's distress caused by the reservoir also disappeared.
10.Transcatheter Arterial Chemotherapy with Miriplatin for Hepatocellular Carcinoma Patients with Chronic Renal Failure: Report of Three Cases.
Norihiro IMAI ; Kenji IKEDA ; Yuya SEKO ; Yusuke KAWAMURA ; Hitomi SEZAKI ; Tetsuya HOSAKA ; Norio AKUTA ; Masahiro KOBAYASHI ; Satoshi SAITOH ; Fumitaka SUZUKI ; Yoshiyuki SUZUKI ; Yasuji ARASE ; Hiromitsu KUMADA
Gut and Liver 2013;7(2):246-251
Miriplatin is a novel lipophilic platinum complex that was developed to treat hepatocellular carcinoma (HCC). Although HCC patients frequently have coexisting chronic renal failure, little prospective data are available regarding the clinical toxicity of chemotherapeutic agents used to treat HCC patients with chronic renal failure. In a phase II study, the plasma concentration of total platinum in patients who received miriplatin was very low, and no severe renal toxicity caused by miriplatin injection was reported. Here, we present three cases of HCC with stage 4 chronic renal failure who received transcatheter arterial chemotherapy with miriplatin. All cases were male, ages 72, 84, and 83 years, and had serum creatinine levels of 2.3, 1.6, and 1.9 mg/dL, respectively. Their estimated glomerular filtration rates were 21.9, 20.3, and 22.2 mL/min, respectively. All cases were treated for unresectable HCC with transcatheter arterial chemotherapy with miriplatin. No serious adverse events were observed, and serum creatinine levels did not elevate, even in the patient who experienced renal failure caused by cisplatin administration. These results might suggest that transcatheter arterial chemotherapy with miriplatin can be safely used in HCC patients with chronic renal failure.
Carcinoma, Hepatocellular
;
Cisplatin
;
Creatinine
;
Glomerular Filtration Rate
;
Humans
;
Kidney Failure, Chronic
;
Male
;
Organoplatinum Compounds
;
Plasma
;
Platinum
;
Renal Insufficiency


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