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  1. Article

    Open Access

    Analysis of Maternal and Fetal Oxidative Stress During Delivery with Epidural Analgesia

    Childbirth is a stressful event for mothers, and labor epidural analgesia (LEA) may reduce mental stress. Mental stressors include labor pain, fear, and anxiety, which induce oxidative stress. In this study, w...

    Tomoo Yuba, Yoshihisa Koyama, Yuki Kinishi, Reiko Uokawa in Reproductive Sciences (2024)

  2. Article

    Open Access

    Si-based agent alleviated small bowel ischemia–reperfusion injury through antioxidant effects

    The progression of small bowel ischemia–reperfusion (IR) injury causes cells in the intestinal tract to undergo necrosis, necessitating surgical resection, which may result in loss of intestinal function. Ther...

    Masato Shimada, Yoshihisa Koyama, Yuki Kobayashi, Yasunari Matsumoto in Scientific Reports (2024)

  3. Article

    Open Access

    Effect of the new silicon-based agent on the symptoms of interstitial pneumonitis

    Interstitial pneumonia (IP) is a collective term for diseases whose main lesion is fibrosis of the pulmonary interstitium, and the prognosis associated with acute exacerbation of these conditions is often poor...

    Masato Shimada, Yoshihisa Koyama, Yuki Kobayashi, Hikaru Kobayashi in Scientific Reports (2023)

  4. Article

    Open Access

    Author Correction: A new therapy against ulcerative colitis via the intestine and brain using the Si-based agent

    Yoshihisa Koyama, Yuki Kobayashi, Ikuei Hirota, Yuanjie Sun in Scientific Reports (2022)

  5. Article

    Open Access

    A new therapy against ulcerative colitis via the intestine and brain using the Si-based agent

    Ulcerative colitis (UC) is a non-specific inflammatory bowel disease that causes ulcers and erosions in the colonic mucosa and becomes chronic with cycles of amelioration and exacerbation. Because its exact et...

    Yoshihisa Koyama, Yuki Kobayashi, Ikuei Hirota, Yuanjie Sun in Scientific Reports (2022)

  6. Article

    Open Access

    Hydrogen-generating Si-based agent protects against skin flap ischemia–reperfusion injury in rats

    Hydrogen is effective against ischemia–reperfusion (I/R) injury in skin flaps. However, the difficulty of continuously administering a sufficient amount of hydrogen using conventional methods has been an issue...

    Naoya Otani, Koichi Tomita, Yuki Kobayashi, Kazuya Kuroda in Scientific Reports (2022)

  7. Article

    Open Access

    Diagnosis and treatment of gastric hamartomatous inverted polyp (GHIP) using a modified combination of laparoscopic and endoscopic approaches to neoplasia with a non-exposure technique (modified CLEAN-NET): a case report

    Gastric hamartomatous inverted polyp (GHIP) is a pathological condition where enlarged gastric glands with cystic dilatation grow in the submucosa. It is difficult to excise the tissue due to its location. In ...

    Suguru Hayase, Mei Sakuma, Shun Chida, Masaru Saito, Hirofumi Ami in Surgical Case Reports (2020)

  8. Article

    Open Access

    Renoprotective and neuroprotective effects of enteric hydrogen generation from Si-based agent

    We have developed Si-based agent which can generate a large amount of hydrogen. Si-based agent continues generating hydrogen for more than 24 h by the reaction with water under conditions similar to those in b...

    Yuki Kobayashi, Ryoichi Imamura, Yoshihisa Koyama, Makoto Kondo in Scientific Reports (2020)

  9. Article

    Open Access

    Molecular mechanisms of Wischnewski spot development on gastric mucosa in fatal hypothermia: an experimental study in rats

    Numerous dark-brown-coloured small spots called “Wischnewski spots” are often observed in the gastric mucosa in the patients dying of hypothermia, but the molecular mechanisms through which they develop remain...

    Chihpin Yang, Kana Sugimoto, Yukie Murata, Yuichiro Hirata in Scientific Reports (2020)

  10. Article

    Open Access

    Fibroblast growth factor 12 is expressed in spiral and vestibular ganglia and necessary for auditory and equilibrium function

    We investigated fibroblast growth factor 12 (FGF12) as a transcript enriched in the inner ear by searching published cDNA library databases. FGF12 is a fibroblast growth factor homologous factor, a subset of t...

    Yukiko Hanada, Yukiko Nakamura, Yoshiyuki Ozono, Yusuke Ishida in Scientific Reports (2018)

  11. Article

    Open Access

    Inhibition of RGMa alleviates symptoms in a rat model of neuromyelitis optica

    Neuromyelitis optica (NMO) is an autoimmune disease associated with NMO immunoglobulin G (NMO-IgG), an antibody that selectively binds to the aquaporin-4. Here, we established a localized NMO model by injectin...

    Kana Harada, Yuki Fujita, Tatsusada Okuno, Shogo Tanabe in Scientific Reports (2018)

  12. Article

    Open Access

    Building a 5-HT3A Receptor Expression Map in the Mouse Brain

    Of the many serotonin receptors, the type 3 receptors (5-HT3R) are the only ionotropic ones, playing a key role in fast synaptic transmission and cognitive and emotional brain function through controlled neuro...

    Yoshihisa Koyama, Makoto Kondo, Shoichi Shimada in Scientific Reports (2017)

  13. Article

    Open Access

    Concomitant existence of pheochromocytoma in a patient with multiple endocrine neoplasia type 1

    Multiple endocrine neoplasia type 1 (MEN1) is an autosomal-dominant inherited disorder that is classically characterized by the presence of neoplastic lesions of the parathyroid glands, the anterior pituitary ...

    Ryo Okada, Tatsuo Shimura, Shigeyuki Tsukida, ** Ando in Surgical Case Reports (2016)

  14. Article

    Open Access

    Association between chronic stress-induced structural abnormalities in Ranvier nodes and reduced oligodendrocyte activity in major depression

    Repeated stressful events are associated with the onset of major depressive disorder (MDD). We previously showed oligodendrocyte (OL)-specific activation of the serum/glucocorticoid-regulated kinase (SGK)1 cas...

    Shingo Miyata, Manabu Taniguchi, Yoshihisa Koyama, Shoko Shimizu in Scientific Reports (2016)

  15. Article

    Open Access

    Ultrastructural Localization of Adiponectin protein in Vasculature of Normal and Atherosclerotic mice

    Adiponectin, adipose-specific secretory protein, abundantly circulates in bloodstream and its concentration is around 1000-fold higher than that of other cytokines and hormones. Hypoadiponectinemia is a risk f...

    Takuya Mori, Yoshihisa Koyama, Norikazu Maeda, Yukiko Nakamura in Scientific Reports (2014)

  16. No Access

    Article

    IgG4-related intrahepatic sclerosing cholangitis resulting in sepsis caused by secondary suppurative inflammation: report of a case

    We report a case of pre-disseminated intravascular coagulation caused by secondary suppurative inflammation in a patient with immunoglobulin (Ig) G4-related sclerosing cholangitis. The patient was a 78-year-ol...

    Motonobu Saito, Tatsuo Shimura, Yuko Hashimoto, Teruhide Ishigame in Surgery Today (2013)

  17. No Access

    Article

    Osteogenic activity of MG63 cells on bone-like hydroxyapatite/collagen nanocomposite sponges

    The hydroxyapatite/collagen (HAp/Col) sponge with 95% (v/v) porosity was prepared by freeze-drying of a HAp/Col fiber suspension. MG63 cells were seeded onto the HAp/Col sponge and cultured under a pressure/pe...

    Teruaki Yoshida, Masanori Kikuchi in Journal of Materials Science: Materials in… (2010)

  18. No Access

    Article

    Induction of Connective Tissue Growth Factor in Retinal Pigment Epithelium Cells by Oxidative Stress

    To investigate whether connective tissue growth factor (CTGF) is upregulated in the retinal pigment epithelium (RPE) by oxidative stress in vitro and in vivo.

    Satoshi Matsuda, Fumi Gomi, Taiichi Katayama in Japanese Journal of Ophthalmology (2006)

  19. No Access

    Article

    Preparation of Hydroxyapatite/Collagen Composites Using Biomimetic Process and their Biocompatibility

    Nanocomposites of hydroxyapatite (HAp) and collagen (Col) were prepared by a biomimetic coprecipitation method under controlled pH and temperature. Transmission electron micrographs showed that the c-axis of H...

    Masanori Kikuchi, Junzo Tanaka, Soichiro Itoh in MRS Online Proceedings Library (1999)

  20. No Access

    Chapter and Conference Paper

    Experimental Study on the Efficacy of Intrahepatic Arterial and Portal Venous Infusion of Anticancer Drugs to Inhibit the Growth of Portally Inoculated VX-2 Carcinoma

    To evaluate the efficacy of intraarterial and portal venous infusion of anticancer drugs to inhibit the growth of portally inoculated VX-2 tumor cells (1×107), adriamycin (lmg/kg) was administered into the hepati...

    Masami Hoshino, Yoshihisa Koyama in Recent Advances in Management of Digestive… (1993)