Publications by authors named "Hideki Ohta"

Heavy metals (Pb, Cu, Cd, and Zn) in river sediments from the Winongo, Code, and Gajahwong rivers in Yogyakarta City were investigated. Fifteen samples were collected from each river, systematically from upstream to downstream. Background sediment samples were collected from the furthest upstream point to reflect natural sediment conditions.

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  • The study is a retrospective cohort analysis focused on the effectiveness of balloon kyphoplasty (BKP) for treating vertebral compression fractures (VCFs) in patients with diffuse idiopathic skeletal hyperostosis (DISH).
  • A total of 72 patients were examined, with 21 having DISH and 51 without, to assess factors like back pain improvement, adjacent fracture incidence, and reoperation rates.
  • Results showed that BKP improved back pain in both groups and had similar rates of subsequent fractures and reoperations, though local kyphosis increased significantly in the DISH group, indicating BKP's potential benefits despite complications.
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Study Design: This study adopted a retrospective cohort study design.

Purpose: This study aimed to clarify the influence of diffuse idiopathic skeletal hyperostosis (DISH) on bone fusion after transforaminal lumbar interbody fusion (TLIF).

Overview Of Literature: The negative effects of DISH on lumbar degenerative diseases have been reported, and DISH may be involved in the onset and severity of lumbar spinal canal stenosis.

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Aims: This study aimed to investigate the differences in the prognosis of older patients who received home care or hospitalized care to treat acute fever in Japan.

Methods: This prospective case-control study screened 192 registered acutely pyrexic older patients who received home care at 10 medical institutions in Japan, and enrolled 15 and 30 patients who were treated in the hospital (hospitalized group) and at home (home-care group), respectively, matched for fever and the physical conditions before fever onset. Intergroup differences in the 90-day mortality from fever onset and changes in patients' disability and dementia from the pre-fever to 90 days post-fever onset were determined.

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Intending to obtain scientific evidence to use in developing indicators for evaluating the quality of home care, we surveyed doctors, nurses, and other home care professionals to determine the points they consider to be essential in evaluating home care. We investigated all 901 clinics registered to the National Association of Medical Institutions Supporting Home Care and a random sample of 600 Visiting Nurse Service stations registered to the National Association for Visiting Nurse Service in Japan. A total of 539 questionnaire responses were received (response rate: 35.

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Aim: Nurses have difficulty assessing the type of constipation by ordinal assessment methods and may therefore struggle to select an appropriate defecation care. Although previous studies described the safety and effectiveness of defecation care based on ultrasonographic observations in the colorectum, no standardized educational program has been established. This study aimed to determine the feasibility of the constipation point-of-care ultrasound (POCUS) educational program regarding the use of ultrasonography as an assessment tool to determine different types of constipation.

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  • The study explored how machine learning could improve the assessment of fecal retention using ultrasound (US) imaging.
  • It compared the accuracy of traditional ultrasound methods with deep learning techniques in evaluating fecal properties in 31 patients.
  • Results showed 100% sensitivity and specificity in detecting rectal feces, with deep learning effectively classifying stool types, although it performed slightly less accurately than conventional US for hard stools.
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Aim: To examine whether the outcomes of fever treatment through home care differ from those through hospitalized care for older people who regularly receive home care in Japan.

Methods: A retrospective survey of medical record-based data for 679 older people who regularly received home care provided by a clinic in Japan. From these data, 61 fever cases (21 cases treated in the hospital and 40 treated at home and assigned to the hospitalized and home-care groups, respectively) were selected for analysis through a matching process.

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Background: Although previous studies have demonstrated the ability of ultrasound to detect stool in the colon and rectum, the clinical utility of evaluating constipation via ultrasonic imaging by nurses has not been determined. In this case report, we observed fecal retention, assessed the presence of constipation, and performed defecation care in an older adult patient in a home care setting in a city near the metropolitan area in Japan.

Case: An 85-year-old male with advanced stage prostate cancer and multiple metastases was diagnosed with fecal impaction via digital rectal examination and evaluation of stool consistency.

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Aim: To verify the efficacy of defecation care based on handheld ultrasonographic observations for functional constipation by visiting nurses skilled in bowel ultrasonography.

Methods: Home-care patients with suspected functional constipation receiving nursing visits were recruited in this multiple-baseline, single-case experiment with intervention points shifted by 1 week. A total of 15 older adults were categorized into 3-, 4-, 5- or 6-week intervention phases.

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  • Compression of the spinal cord from thoracic ossification of the posterior longitudinal ligament (T-OPLL) can lead to serious thoracic myelopathy, and while surgery is the best treatment, outcomes vary and some patients do worse post-surgery.
  • A study of 55 patients analyzed data to find surgical and patient-related factors that affect recovery, considering various aspects like preexisting health issues and types of surgical methods used.
  • Results showed that 60% of patients improved while 18% worsened; using instrumentation during surgery and choosing posterior decompression and fusion methods significantly improved recovery rates, while complications like CSF leakage increased the risk of poor outcomes.
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Purpose: Although hypersensitivity reactions (HSRs) to oxaliplatin (L-OHP) therapy are well-documented, few reports have compared different therapies in terms of HSR occurrence. In this study, we compared the frequency and pattern of HSRs to modified FOLFOX6 (mFOLFOX6; 5-fluorouracil, levofolinate calcium and L-OHP infusions) and XELOX (capecitabine and L-OHP) therapies, and sought to identify risk factors associated with HSRs.

Methods: Patients who had received mFOLFOX6 or XELOX chemotherapeutic regimens for unresectable colon or rectal cancer or as adjuvant chemotherapy following colon cancer surgery between April 2012 and August 2015 were included.

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Purpose: Pemetrexed (PEM) is an anticancer agent used for the treatment of non-small cell lung cancer, malignant pleural mesothelioma and thymoma. Reportedly, PEM has higher efficacy and safety when used in combination with platinum-based agents. However, there are only few reports on the safety of PEM in patients with an eGFR of ≤45 mL/min.

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  • Cancer cells release tiny vesicles called extracellular vesicles (EVs) into their surroundings, which have potential as biomarkers, but detecting them in clinical samples is tough.
  • The study introduces a quick and sensitive method to analyze EVs directly from blood samples of colorectal cancer patients, using antibodies and photosensitizer-beads for detection without needing to purify the EVs first.
  • It highlights the use of the antigen CD147 found in cancer-related EVs for identifying colorectal cancer, marking a step forward in liquid biopsy techniques for better diagnosis and treatment.
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  • Exosomal microRNAs (miRNAs) are being studied as potential biomarkers for diagnosing colorectal cancer (CRC), with the goal of identifying specific miRNAs that show changes in levels associated with the disease and its progression.
  • The study involved analyzing miRNA profiles in serum exosomes from 88 CRC patients and 11 healthy individuals, confirmed by comparisons with colon cancer cell lines and surgical sample validations.
  • Results indicated that seven specific miRNAs were significantly elevated in primary CRC patients and decreased after tumor removal, suggesting their potential role as sensitive diagnostic markers for early-stage CRC.
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An 84-year-old woman with heaviness of the right lower extremity had an iliocaval fistula related to a right internal iliac aneurysm. Immediately after deployment of an endovascular device, cardiac arrest occurred because of severely decreased sympathetic activity. After surgery, the patient recovered well and has been followed up with exclusion of the arteriovenous fistula and resolution of the type II endoleak.

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We report 3 cases of conjoined nerve root anomalies identified during micro-endoscopic discectomy (MED). Between 2009 and 2010, 61 men and 20 women aged 18 to 84 (mean, 42) years underwent MED for symptomatic lumbar disc herniation of L3-4 (n=1), L4-5 (n=44), and L5-S1 (n=36). Magnetic resonance imaging (MRI), myelogram, and postmyelo computed tomography did not identify the anomalies.

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Background: The aim of this study was to evaluate the appropriate condition of use of the fibrin glue plus polyglycolic acid (PGA) sheet combination to obtain the optimal sealing effect.

Methods: 126 consecutive patients underwent video-assisted thoracic surgery (VATS) were divided into groups as follows: fibrin glue sprayed on the PGA sheet placed over the pleural defect (Method I); fibrinogen and thrombin solutions sprayed separately on the PGA sheet soaked in thrombin and placed over the pleural defect after rubbing of fibrinogen solution on the area (Method II); fibrin glue sprayed on the PGA sheet placed over the pleural defect after rubbing of fibrinogen solution on the area (Method III). Method II and Method III were also examined in an animal model.

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Background: We aimed to clarify the factors affecting outcomes of home care for patients with malignant diseases.

Methods: Of 607 patients who were treated in 10 clinics specialized in home care between January and December 2007 at Chiba, Fukuoka, Iwate, Kagoshima, Tochigi and Tokyo prefectures across Japan, 346 (57%; 145 men and 201 women) had malignant diseases. We collected information on medical and social backgrounds, details of home care, and its outcomes based on their medical records.

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  • - The study compared the effects of two surgical methods—rigid fusion and dynamic stabilization—on lumbar kinematics in 77 patients with spinal stenosis and L4 degenerative spondylolisthesis, using functional radiographs and MRI for evaluation.
  • - Results showed that while there were no significant kinematic differences before surgery, postoperatively, the rigid fusion group exhibited greater disc degeneration at specific lumbar segments compared to the dynamic stabilization group.
  • - The dynamic stabilization method preserved more kinematic function at the instrumented segment and may help reduce the risk of further disc issues in adjacent vertebral segments.
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  • The study addressed the issues of adjacent segment disorder and recurrence of spinal canal stenosis in patients with degenerative lumbar spinal disease, proposing a nonfusion stabilization method using the Segmental Spinal Correction System along with decompression.
  • Analyzed outcomes from 52 patients over at least two years showed significant improvement in their Japanese Orthopaedic Association scores, with a 76% improvement rate and limited complications.
  • The results indicated that nonfusion stabilization is a promising treatment for unstable degenerative lumbar disease, although ongoing monitoring for adjacent segment disorders remains essential.
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  • * Researchers identified a small protein called SVBP that interacts with VASH1, showing that SVBP is consistently expressed and enhances the secretion of VASH1 in cultured ECs.
  • * SVBP not only increases VASH1's solubility and prevents its breakdown but also boosts its ability to inhibit EC migration, indicating that SVBP plays a key role in supporting VASH1's anti-angiogenic effects.
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During cancer progression, the angiogenesis that occurs is involved in tumor growth and hematogenous-distant metastasis, whereas lymphangiogenesis is involved in regional lymph node metastasis. Angiogenesis is counterregulated by various endogenous inhibitors; however, little is known about endogenous inhibitors of lymphangiogenesis. We recently isolated vasohibin1 as an angiogenesis inhibitor intrinsic to the endothelium and further demonstrated its anticancer activity through angiogenesis inhibition.

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