Publications by authors named "Hidetoshi Sato"

The present study aimed to identify crucial tipping points during neuronal development in a post-mitotic state using Raman spectroscopy and a dynamic network biomarker (DNB) analysis. A DNB analysis is a promising method to detect early signal during state transition. We previously developed an in vitro model that mimics neuronal development.

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Raman spectroscopy is used to monitor the development of live neurons exposed to cytosine arabinoside (ara-C). Ara-C is widely used to culture neurons and exclude non-neuronal cells. In this study, Raman spectra obtained from neurons exposed to ara-C were plotted using an analytical model of neuronal development to evaluate the impact of ara-C on neuronal development.

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Bovine mastitis is an inflammatory disease that primarily occurs when bacteria invade and proliferate in the mammary gland or such as physical trauma. Mastitis results in a decrease in milk yield and quality, causing huge economic losses. Cyclophilin A (CyPA) is a cytosolic protein known as cyclosporine binding protein.

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  • Raman images were created for polypropylene (PP) films before and after exposure to UV light, revealing changes in crystallinity.
  • Initially, the intensity ratios of Raman bands in the PP films were uniform, but post-irradiation, they exhibited a mottled pattern, indicating recrystallization.
  • The study illustrates that Raman imaging effectively captures subtle structural changes at the micrometer level that traditional morphological images might miss.
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  • * A 74-year-old male presented with several symptoms and had MRI results showing a tumor; preoperative steroid treatment shrank the tumor and reduced pain, but only subtotal resection was possible due to the tumor's adhesion to surrounding tissues.
  • * Post-surgery, the patient's condition improved rapidly, and he received targeted radiation therapy, which resulted in a gradual decrease in tumor size without recurrence over two years, emphasizing the potential benefits of combining surgery with adjuvant therapies.
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  • The study investigates the use of Raman spectroscopy with 633 nm and 785 nm excitation light to detect eosinophil accumulation in live esophageal tissue, finding weak signals from hemoglobin with 785 nm but strong resonance effects from eosinophil peroxidase (EPO) with 633 nm.
  • A specific optical probe called BHRP, featuring a sapphire ball lens, was utilized for measuring the Raman spectra of eosinophils in mouse tissue, indicating enhanced detection capabilities.
  • Principal component analysis (PCA) successfully differentiated eosinophils from other blood cells in the spectral data, demonstrating the effectiveness of 785 nm Raman spectroscopy for diagnosing eosinophilic esoph
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  • Mastitis is a common issue in dairy cows that leads to lower milk production and quality, but probiotics like Bacillus subtilis C-3102 may help prevent it instead of using antibiotics.
  • Research showed that feeding cows this probiotic reduced the occurrence of mastitis, decreased medication days, and minimized milk disposal time while keeping somatic cell counts lower than the control group.
  • Additionally, probiotic treatment appeared to lower stress hormone levels and improve immune cell responses, suggesting B. subtilis C-3102 is effective in preventing mastitis in cows.
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Central diabetes insipidus (CDI) is a rare disease in children and has a variety of etiologies. The major causes of CDI with pituitary stalk thickening (PST) are germinoma, Langerhans cell histiocytosis (LCH), and Lymphocytic infundibulo-neurohypophysitis, which are difficult to differentiate by imaging and require pathological diagnosis. We report a case of infantile-onset isolated neurohypophyseal LCH diagnosed by pathological findings.

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Attenuated total reflection far-ultraviolet (ATR-FUV) spectra in the 145-250 nm region were studied for four kinds of proteins (two α-helix-rich proteins: bovine serum albumin (BSA) and lysozyme and two β-sheet rich proteins: concanavalin A and γ-globulin) in different solutions (pure water and phosphate buffered saline, or PBS) with different concentrations. All the spectra show a band at 191 nm due to the π-π transition of amide bonds of the proteins. The wavelength of the band does not change with their second structures, suggesting that the corresponding electronic transition mode is localized and polarized in the direction that is not affected by the difference in the peptide folding.

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  • *In revision surgeries following cervical laminoplasty or laminectomy, accurately positioning LMS can be challenging, requiring a reliable method for entry point and angle confirmation.
  • *The authors propose a practical technique using a caliper and an angle device set at 25 degrees to ensure accurate placement of LMS during revision surgery, even after previous spinal procedures.
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The purpose of the present study was to investigate molecular compositions of lipid droplets changing in live hepatic cells stimulated with major fatty acids in the human body, i.e., palmitic, stearic, oleic, and linoleic acids.

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Although newborn screening (NBS) for congenital hypothyroidism (CH) in Japan started more than 40 years ago, the prevalence of CH remains unclear. Prevalence estimations among NBS-positive CH individuals include those with transient hypothyroidism and transient hyperthyrotropinemia, and re-evaluation with increasing age is necessary to clarify the actual incidence. Thus, we re-evaluated the incidence of permanent CH.

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  • * The study introduces a novel CARS instrument called the double-wavelength-emission, background-free, electronically tuned Ti:sapphire laser (DW-ETL), which produces two laser pulses of different wavelengths simultaneously without mechanical movement.
  • * The DW-ETL CARS system is capable of generating stable spectra from biomedical samples across the fingerprint region, enhancing the potential for multivariate analysis in biological applications.
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The incidence of intramedullary spinal cord metastasis (ISCM) has been increasing because the overall survival of patients with cancer has improved thanks to recent advanced therapies, such as molecular targeted drugs, anticancer agents, and various irradiation techniques. ISCM from lung and breast cancer is the most common form among cases of ISCM. We report an extremely rare form of ISCM from gastric cancer.

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  • Natural tobacco oil, derived from Kazakhstan tobacco seeds, is highlighted for its antiseptic and antibacterial properties in folk medicine.
  • Cold pressing methods yielded a quality oil with a high oil yield of 36.75%, which is nonacidic and rich in unsaturated fats.
  • The oil has potential commercial applications in various products such as soap, anti-wrinkle creams, hair shampoos, shoe cream, and as a base for perfumes and anti-inflammatory drugs.
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Postoperative cervical deformity sometimes occurs in the short or long term after primary surgery for cervical disorders related to the degenerative aging spine, neoplastic etiologies, hemodialysis, infection, inflammation, trauma, etc. Cervical kyphosis after posterior decompression surgery, such as laminectomy or laminoplasty, is a common problem for spine surgeons. However, revision surgery for cervical deformity is definitely one of the most challenging areas for spine surgeons.

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  • Newborn screening (NBS) can identify 21-hydroxylase deficiency (21-OHD), allowing for prompt treatment, but many infants show symptoms like adrenal crises when first diagnosed.
  • A study reviewed medical records from 40 21-OHD patients in Japan to find the earliest onset of hyponatremia, revealing that it can develop as early as 7 days after birth.
  • The findings suggest that hyponatremia occurs sooner than previously thought (within 7 days versus 10-14 days) in infants with salt-wasting type 21-OHD, indicating a need for quicker consultation responses in high-risk cases.
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Determining the optimal surgical method for cervical ossification of the posterior longitudinal ligament (OPLL) is challenging. The surgical indication should be made based on not only radiological findings, but also the patient's age, preoperative neurological findings, social background, activities of daily life, and the presence or absence of comorbid diseases. Anterior resection for OPLL with or without wide corpectomy and fusion, posterior decompression with or without relatively long fusion, or anterior and posterior combined surgery may be considered.

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  • Os odontoideum is a distinct bone fragment near the odontoid process, with unclear origins that can be congenital, developmental, or traumatic.
  • A case involving two elderly sisters showed symptomatic dystopic os odontoideum, with both having no reported trauma and successful surgical treatment.
  • The findings suggest the need to explore genetic factors and abnormalities in the proatlas' development rather than just focusing on past trauma when assessing the cause of os odontoideum.
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  • Virus infection in human cells was observed 3 hours after the virus invaded, using a viral vector that can replicate in specially modified cells.
  • The study identified two main cellular responses during the viral invasion: the first occurs at 3 hours, potentially linked to changes in DNA composition.
  • A second response, which happens around 9 hours later, appears to involve decreased protein concentration or changes in how phenylalanine is taken up into the nucleus.
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  • - The study successfully distinguished between excitatory and inhibitory neurons using Raman spectroscopy, a technique that does not require staining or labeling.
  • - Primary neurons were cultured from rat cerebral cortexes, and Raman spectra were collected before immunostaining for classification.
  • - The research found that partial least squares regression-discriminant analysis (PLSR-DA) effectively classified the neurons, indicating Raman spectroscopy's potential for non-invasive neuron type discrimination.
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  • A new technique using Raman spectroscopy and multivariate analysis was developed to analyze saccharification reactions in plant tissues, focusing on enzymes like α-amylase.
  • Prediction models were created for sugars like maltose, glucose, and starch using partial least squares regression, and their accuracy was tested with seven samples.
  • The technique proved reliable when compared with traditional methods, but the prediction models are specific to the enzyme used, meaning they may not accurately analyze reactions with other enzymes like β-amylase.
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Dendritic cells (DCs) are specialized antigen presenting cells specializing in antigen uptake and processing, and play an important role in the innate and adaptive immune response. A subset of bovine peripheral blood DCs was identified as CD172a /CD11c /MHC (major histocompatibility complex) class II cells. Although DCs are identified at 0.

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A miniaturized Raman endoscope (mRE) system was employed to study the effects of anticancer treatment on colorectal tumors in a live murine model. The endoscope is narrow enough to observe the inside of the mouse colon under anesthesia. It has a channel for a ball lens mounted on a hollow fiber Raman probe (BHRP) to measure any targeted point under the visual control of the endoscope.

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Objective: This study illuminates the degree of psychological stress response experienced by spouses of cancer patients when given bad news at three different times (notification of the name of the disease, notification of recurrence, and notification of terminality) as well as the factors that influence the response and the health status of the spouse as measured by health-related quality of life (QOL).

Methods: A total of 203 individuals (57 men and 146 women) who had received the three types of news were surveyed using a self-report questionnaire on psychological stress response, marital satisfaction, and health-related QOL scales.

Results: The degree of the psychological stress response was the highest for notification of terminality, followed by notification of the name of the disease, and notification of recurrence.

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