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Hirohisa Izumi

Masatake Nishiwaki, Chiemi Mizuno, Kota Yano, Hirohisa Oya, Ichiro Amano, Junko Matsumoto, Izumi Tanaka, Naoki Sawai, Masayuki Mizuno, Toshihide Shima, Yoshiharu Miyamoto, Takeshi Okanoue
An 85-year-old woman underwent endoscopic retrograde cholangiopancreatography (ERCP) for obstructive jaundice. Selective bile duct cannulation was unsuccessful because of periampullary diverticula (PAD). A pancreatic spontaneous dislodgement stent (PSDS) (5F diameter, 3 cm, straight type) was inserted to prevent post-ERCP pancreatitis. Three days after ERCP, she complained of abdominal pain, and computed tomography revealed retroperitoneal perforation because of PSDS migration to the PAD. If the papillary orifice is observed at the diverticular rim or in the diverticula, a pigtailed PSDS on the duodenal side or flanged stent on the pancreatic ductal side should be inserted in order to prevent this rare adverse event...
November 1, 2017: Internal Medicine
Tatsunori Miyata, Yo-Ichi Yamashita, Takaaki Higashi, Katsunobu Taki, Daisuke Izumi, Keisuke Kosumi, Ryuma Tokunaga, Shigeki Nakagawa, Hirohisa Okabe, Katsunori Imai, Daisuke Hashimoto, Akira Chikamoto, Hideo Baba
BACKGROUND: Several studies have examined controlling nutritional status (CONUT), which is one of the useful biomarkers for predicting patients' prognosis following cancer treatment. The aim of this study was to evaluate the value of CONUT as a postoperative prognostic marker in patients with intrahepatic cholangiocarcinoma (ICC) following curative hepatectomy. METHODS: We retrospectively analyzed 71 patients who underwent curative hepatectomy for ICC between May 2002 and November 2016...
September 8, 2017: World Journal of Surgery
Mitsutomo Kohno, Tatsuhiko Ikeda, Ryo Hashimoto, Yotaro Izumi, Masazumi Watanabe, Hirohisa Horinouchi, Hiromi Sakai, Koichi Kobayashi, Masayuki Iwazaki
OBJECTIVES: Hemoglobin vesicles (HbVs) function as a red blood cell (RBC) substitute and are composed of purified hemoglobin encapsulated in a phospholipid bilayer membrane. The performance of HbVs as a substitute for RBC transfusions was examined in a mouse model of pneumonectomy following acute 40% exchange-transfusion with HbVs. METHODS: Before performing left pneumonectomies, 40% of the blood volume of mice was replaced with a) lactated Ringer's solution (control), b) 5% recombinant human serum albumin (rHSA), c) mouse RBCs shed in rHSA (mRBCs/rHSA), or d) HbV suspended in rHSA (HbV/rHSA)...
2017: PloS One
Takahiro Ishigaki, Hitoshi Matsuda, Ryuta Kawasaki, Soichiro Henmi, Hidekazu Nakai, So Izumi, Masamichi Matsumori, Hirohisa Murakami, Tasuku Honda, Masato Yoshida, Nobuhiko Mukohara
Matsui-Kitamura stent-graft (MKSG) is a home-made device for thoracic endovascular aortic repair (TEVAR) developed in Japan. A 76-year-old man who had been treated by TEVAR (zone 3) with a MKSG for ruptured thoracic aortic aneurysm was diagnosed as having type Ia endoleak caused by suture disruption and aneurysmal sac expansion 6 years later. He underwent TEVAR (zone 1) with debranching and type Ia endoleak disappeared. MKSG had been the effective device especially for acute aortic emergencies in the descending thoracic aorta until the stent-grafts became commercially available, but careful observation and appropriate re-intervention is mandatory for the continued life-saving contribution...
June 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
Itsuro Terada, Akemi Yoshikawa, Shogo Maruzen, Yasumichi Yagi, Shozo Sasaki, Wataru Fukushima, Hirohisa Kitagawa, Takashi Fujimura, Ryohei Izumi
We report a case of a gastrointestinal stromal tumor(GIST)that originated in the anal canal. A 70's woman with a subcutaneous tumor reaching from the anal canal was referred to our hospital. After a thorough examination, the tumor was resected percutaneously in the jackknife position. Histopathological examination showed proliferation of spindle-shaped tumor cells arranged in irregular bundles. Immunohistochemical staining showed that the tumor was positive for c-kit and CD34, and negative for a-SMA and S-100, so the tumor was diagnosed as GIST...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
Wataru Fukushima, Shogo Maruzen, Yasumichi Yagi, Shozo Sasaki, Itsuro Terada, Akemi Yoshikawa, Hirohisa Kitagawa, Takashi Fujimura, Ryohei Izumi, Katsuhiko Saito
Regional lymph node recurrence without distant metastasis after the initial treatment of breast cancer is a relatively rare event. The optimal management for regional lymph node recurrence is poorly understood. We retrospectively evaluated 21 patients who developed regional lymph node recurrence between January 1, 2003 and December 31, 2014. The median interval between regional lymph node recurrence and distant metastasis was 1.0 years(range, 0.4 to 2.5 years). On followup, 15 cases(71.4%)were found to eventually develop distant metastases...
July 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
Yasuhiro Watanabe, Emma Beeldman, Joost Raaphorst, Yuishin Izumi, Hiide Yoshino, Michihito Masuda, Naoki Atsuta, Satoru Ito, Tadashi Adachi, Yoshiki Adachi, Osamu Yokota, Masaya Oda, Ritsuko Hanashima, Mieko Ogino, Hiroo Ichikawa, Kazuko Hasegawa, Hideki Kimura, Toshio Shimizu, Ikuko Aiba, Hayato Yabe, Makoto Kanba, Kimiyoshi Kusumi, Tetsuya Aoki, Yu Hiroe, Hirohisa Watanabe, Kazutoshi Nishiyama, Masahiro Nomoto, Gen Sobue, Kenji Nakashima
Amyotrophic lateral sclerosis (ALS) and frontotemporal dementia (FTD) share common clinical, genetic and neuropathological features. Some ALS patients have behavioral/personality changes, which could result in significant obstacles in the care provided by family members and caregivers. An easy screening tool would contribute greatly to the evaluation of these symptoms. We translated the ALS-FTD-Questionnaire, developed in the Netherlands, into Japanese (ALS-FTD-Q-J) and examined the clinimetric properties (internal consistency, construct and clinical validity)...
August 15, 2016: Journal of the Neurological Sciences
Tatsuya Ehara, Hirohisa Izumi, Muneya Tsuda, Yuki Nakazato, Hiroshi Iwamoto, Kazuyoshi Namba, Yasuhiro Takeda
It is important to provide formula-fed infants with a bifidobacteria-enriched gut microbiota similar to those of breastfed infants to ensure intestinal health. Prebiotics, such as certain oligosaccharides, are a useful solution to this problem, but the combinational benefits of these oligosaccharides have not been evaluated. This study investigated the benefits of oligosaccharide combinations and screened for an optimal combination of oligosaccharides to promote healthy gut microbiota of formula-fed infants...
July 2016: British Journal of Nutrition
Daichi Yokoi, Naoki Atsuta, Hazuki Watanabe, Ryoichi Nakamura, Akihiro Hirakawa, Mizuki Ito, Hirohisa Watanabe, Masahisa Katsuno, Yuishin Izumi, Mitsuya Morita, Akira Taniguchi, Masaya Oda, Koji Abe, Kouichi Mizoguchi, Osamu Kano, Satoshi Kuwabara, Ryuji Kaji, Gen Sobue
The clinical courses of sporadic amyotrophic lateral sclerosis (ALS) show extensive variability. Our objective was to elucidate how age of onset influences the progression of regional symptoms and functional losses in sporadic ALS. We included 648 patients with sporadic ALS from a multicenter prospective ALS cohort. We investigated the distribution of initial symptoms and analyzed the time from onset to events affecting activities of daily living (ADL) as well as the longitudinal changes in each regional functional rating score among four groups with different ages of onset...
June 2016: Journal of Neurology
Sakiko Shimura, Toshiro Takai, Hideo Iida, Natsuko Maruyama, Hirono Ochi, Seiji Kamijo, Izumi Nishioka, Mutsuko Hara, Akira Matsuda, Hirohisa Saito, Susumu Nakae, Hideoki Ogawa, Ko Okumura, Shigaku Ikeda
Allergen sources such as mites, insects, fungi, and pollen contain proteases. Airway exposure to proteases induces allergic airway inflammation and IgE/IgG1 responses via IL-33-dependent mechanisms in mice. We examined the epicutaneous sensitization of mice to a model protease allergen, papain; the effects of tape stripping, which induces epidermal barrier dysfunction; and the atopic march upon a subsequent airway challenge. Papain painting on ear skin and tape stripping cooperatively promoted dermatitis, the skin gene expression of proinflammatory cytokines and growth factors, up-regulation of serum total IgE, and papain-specific IgE/IgG1 induction...
July 2016: Journal of Investigative Dermatology
Hazuki Watanabe, Naoki Atsuta, Akihiro Hirakawa, Ryoichi Nakamura, Masahiro Nakatochi, Shinsuke Ishigaki, Aritoshi Iida, Shiro Ikegawa, Michiaki Kubo, Daichi Yokoi, Hirohisa Watanabe, Mizuki Ito, Masahisa Katsuno, Yuishin Izumi, Mitsuya Morita, Kazuaki Kanai, Akira Taniguchi, Ikuko Aiba, Koji Abe, Koichi Mizoguchi, Masaya Oda, Osamu Kano, Koichi Okamoto, Satoshi Kuwabara, Kazuko Hasegawa, Takashi Imai, Akihiro Kawata, Masashi Aoki, Shoji Tsuji, Kenji Nakashima, Ryuji Kaji, Gen Sobue
OBJECTIVE: To classify the patterns of functional decline in patients with sporadic amyotrophic lateral sclerosis (ALS) and explore the genetic backgrounds that modified these patterns. METHODS: We included 465 patients with sporadic ALS in the analysis and clustered the longitudinal functional scores in the registered patients, using a mixture approach of a non-linear mixed-effects model. We conducted a genome-wide analysis of 572 983 single nucleotide polymorphisms (SNPs)...
August 2016: Journal of Neurology, Neurosurgery, and Psychiatry
Ryosuke Oki, Akiko Uchino, Yuishin Izumi, Hirohisa Ogawa, Shigeo Murayama, Ryuji Kaji
We report the case of a 72-year-old man who had contracted acute paralytic poliomyelitis in his childhood. Thereafter, he had suffered from paresis involving the left lower limb, with no relapse or progression of the disease. He began noticing slowly progressive muscle weakness and atrophy in the upper and lower extremities in his 60s. At the age of 72, muscle weakness developed rapidly, and he demonstrated dyspnea on exertion and dysphagia. He died after about 14 years from the onset of muscle weakness symptoms...
2016: Rinshō Shinkeigaku, Clinical Neurology
Yasumichi Yagi, Shozo Sasaki, Itsuro Terada, Akemi Yoshikawa, Wataru Fukushima, Hirohisa Kitagawa, Takashi Fujimura, Ryohei Izumi, Katsuhiko Saito
BACKGROUND: Emphysematous cholecystitis is a severe variant of acute cholecystitis caused by anaerobic bacteria. Although intraperitoneal air as a complication has been described in association with emphysematous cholecystitis, pneumoretroperitoneum arising from emphysematous cholecystitis is extremely rare. Herein, we describe a rare case of pneumoretroperitoneum arising from emphysematous cholecystitis that was successfully treated with emergency surgery. CASE PRESENTATION: An 84-year-old male was transported to the Emergency Department of our hospital for acute abdomen...
September 8, 2015: BMC Gastroenterology
Takaaki Higashi, Hiromitsu Hayashi, Takayoshi Kaida, Kota Arima, Hideaki Takeyama, Katsunobu Taki, Daisuke Izumi, Ryuma Tokunaga, Keisuke Kosumi, Shigeki Nakagawa, Hirohisa Okabe, Katsunobu Imai, Hidetoshi Nitta, Daisuke Hashimoto, Akira Chikamoto, Toru Beppu, Hideo Baba
BACKGROUND: Dysregulation of lipid and amino acid metabolism in patients with liver diseases results in obesity-related carcinogenesis and decreased levels of branched-chain amino acids (BCAA), respectively. This study assessed the clinical and prognostic impact of visceral fat amount (VFA) and its association with amino acid metabolism in patients with hepatocellular carcinoma (HCC). METHODS: In this study, 215 patients who underwent hepatic resection for HCC were divided into two groups based on VFA criteria for metabolic abnormalities in Japan...
December 2015: Annals of Surgical Oncology
Hirohisa Izumi, Mario Minegishi, Yohei Sato, Takashi Shimizu, Kazunori Sekine, Mitsunori Takase
BACKGROUND: Bifidobacterium breve M-16V (M16V) is a probiotic bacterial strain with a long tradition of use in neonatal intensive care units in some countries. Previous study showed that the effects of M16V administration on gene expression were greater during the weaning period than in the neonatal period and were greater in the colon than in the small intestine and spleen, suggesting that M16V has anti-inflammatory effects. In this study, we evaluated the effects of inflammation during the weaning period and the effects of M16V on normal and inflammatory conditions...
October 2015: Pediatric Research
Jun Mitsui, Takashi Matsukawa, Hidenao Sasaki, Ichiro Yabe, Masaaki Matsushima, Alexandra Dürr, Alexis Brice, Hiroshi Takashima, Akio Kikuchi, Masashi Aoki, Hiroyuki Ishiura, Tsutomu Yasuda, Hidetoshi Date, Budrul Ahsan, Atsushi Iwata, Jun Goto, Yaeko Ichikawa, Yasuo Nakahara, Yoshio Momose, Yuji Takahashi, Kenju Hara, Akiyoshi Kakita, Mitsunori Yamada, Hitoshi Takahashi, Osamu Onodera, Masatoyo Nishizawa, Hirohisa Watanabe, Mizuki Ito, Gen Sobue, Kinya Ishikawa, Hidehiro Mizusawa, Kazuaki Kanai, Takamichi Hattori, Satoshi Kuwabara, Kimihito Arai, Shigeru Koyano, Yoshiyuki Kuroiwa, Kazuko Hasegawa, Tatsuhiko Yuasa, Kenichi Yasui, Kenji Nakashima, Hijiri Ito, Yuishin Izumi, Ryuji Kaji, Takeo Kato, Susumu Kusunoki, Yasushi Osaki, Masahiro Horiuchi, Tomoyoshi Kondo, Shigeo Murayama, Nobutaka Hattori, Mitsutoshi Yamamoto, Miho Murata, Wataru Satake, Tatsushi Toda, Alessandro Filla, Thomas Klockgether, Ullrich Wüllner, Garth Nicholson, Sid Gilman, Caroline M Tanner, Walter A Kukull, Mathew B Stern, Virginia M-Y Lee, John Q Trojanowski, Eliezer Masliah, Phillip A Low, Paola Sandroni, Laurie J Ozelius, Tatiana Foroud, Shoji Tsuji
OBJECTIVE: Glucocerebrosidase gene (GBA) variants that cause Gaucher disease are associated with Parkinson disease (PD) and dementia with Lewy bodies (DLB). To investigate the role of GBA variants in multiple system atrophy (MSA), we analyzed GBA variants in a large case-control series. METHODS: We sequenced coding regions and flanking splice sites of GBA in 969 MSA patients (574 Japanese, 223 European, and 172 North American) and 1509 control subjects (900 Japanese, 315 European, and 294 North American)...
April 2015: Annals of Clinical and Translational Neurology
Hirohisa Izumi, Muneya Tsuda, Yohei Sato, Nobuyoshi Kosaka, Takahiro Ochiya, Hiroshi Iwamoto, Kazuyoshi Namba, Yasuhiro Takeda
We reported previously that microRNA (miRNA) are present in whey fractions of human breast milk, bovine milk, and rat milk. Moreover, we also confirmed that so many mRNA species are present in rat milk whey. These RNA were resistant to acidic conditions and to RNase, but were degraded by detergent. Thus, these RNA are likely packaged in membrane vesicles such as exosomes. However, functional extracellular circulating RNA in bodily fluids, such as blood miRNA, are present in various forms. In the current study, we used bovine raw milk and total RNA purified from exosomes (prepared by ultracentrifugation) and ultracentrifuged supernatants, and analyzed them using miRNA and mRNA microarrays to clarify which miRNA and mRNA species are present in exosomes, and which species exist in other forms...
May 2015: Journal of Dairy Science
Tetsuyuki Takahashi, Hisanori Uehara, Hirohisa Ogawa, Hitomi Umemoto, Yoshimi Bando, Keisuke Izumi
Associations between growth factor receptor-mediated cell signaling and cancer cell growth have been previously characterized. Receptors for prostaglandin E2, such as EP2, and EP4, play roles in cancer growth, progression and invasion. Thus, we examined the interactions between EP2/EP4- and IGF-1R-mediated cellular signaling in human pancreatic cancer cells. Selective antagonists against EP2 and EP4 abrogated IGF-1-stimulated cell growth and suppressed MEK/ERK phosphorylation. In subsequent experiments, phospho-antibody arrays indicated increased phosphorylation levels of protein kinase C-θ (PKC-θ) at the Thr538 position following the inhibition of EP2/EP4-mediated signaling...
March 10, 2015: Oncotarget
Hazuki Watanabe, Naoki Atsuta, Ryoichi Nakamura, Akihiro Hirakawa, Hirohisa Watanabe, Mizuki Ito, Jo Senda, Masahisa Katsuno, Yuishin Izumi, Mitsuya Morita, Hiroyuki Tomiyama, Akira Taniguchi, Ikuko Aiba, Koji Abe, Kouichi Mizoguchi, Masaya Oda, Osamu Kano, Koichi Okamoto, Satoshi Kuwabara, Kazuko Hasegawa, Takashi Imai, Masashi Aoki, Shoji Tsuji, Imaharu Nakano, Ryuji Kaji, Gen Sobue
Our objective was to elucidate the clinical factors affecting functional decline and survival in Japanese amyotrophic lateral sclerosis (ALS) patients. We constructed a multicenter prospective ALS cohort that included 451 sporadic ALS patients in the analysis. We longitudinally utilized the revised Amyotrophic Lateral Sclerosis Functional Rating Scale (ALSFRS-R) as the functional scale, and determined the timing of introduction of a tracheostomy for positive-pressure ventilation and death. A joint modelling approach was employed to identify prognostic factors for functional decline and survival...
June 2015: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
Hirohisa Ogawa, Julie G Ledford, Sambuddho Mukherjee, Yoshinori Aono, Yasuhiko Nishioka, James J Lee, Keisuke Izumi, John W Hollingsworth
BACKGROUND: Surfactant protein D (SP-D) can regulate both innate and adaptive immunity. Recently, SP-D has been shown to contribute to the pathogenesis of airway allergic inflammation and bleomycin-induced pulmonary fibrosis. However, in allergic airways disease, the role of SP-D in airway remodeling remains unknown. The objective of this study was to determine the contribution of functional SP-D in regulating sub-epithelial fibrosis in a mouse chronic house dust mite model of allergic airways disease...
2014: Respiratory Research
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