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https://www.readbyqxmd.com/read/28207964/impaired-nephrogenesis-in-neonatal-rats-with-oxygen-induced-retinopathy
#1
Mayu Nakagawa, Naoto Nishizaki, Amane Endo, Tomonosuke Someya, Yuta Saito, Akira Mizutani, Taichi Hara, Yayoi Murano, Koji Sakuraya, Satoshi Hara, Daisuke Umino, Daishi Hirano, Shuichiro Fujinaga, Yoshiyuki Ohtomo, Toshiaki Shimizu
OBJECTIVES: Preterm neonates are born while nephrogenesis is ongoing and are commonly exposed to factors in a hyperoxic environment that can impair renal development. Oxidative stress has also been implicated in the development of retinopathy of prematurity (ROP). The rat model of oxygen-induced retinopathy (OIR) is the most clinically relevant model of ROP because its biologic features closely resemble those of ROP in preterm infants. We investigated impaired renal development in a rat model of OIR...
February 16, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28186872/acoustic-pattern-evaluation-during-cementless-hip-arthroplasty-surgery-may-be-a-new-method-for-predicting-complications
#2
Itaru Morohashi, Hideaki Iwase, Akio Kanda, Taichi Sato, Yasuhiro Homma, Atsuhiko Mogami, Osamu Obayashi, Kazuo Kaneko
BACKGROUND: Although surgeons must perform implantation of the cementless stem during total hip arthroplasty (THA) without complications, assessment is left to the surgeon's intuitive judgement, which could contain inter/intra-observer bias variety. We therefore asked (1) whether the sound created during the stem implantation could be evaluated objectively and (2) whether those sounds are correlate to the complication specific to the cementless stems. Our hypothesis is that the sounds produced during stem insertion could be quantified and related to the complications...
2017: SICOT-J
https://www.readbyqxmd.com/read/28186232/importance-of-detailed-distribution-of-branches-in-giant-coronary-aneurysm
#3
Nobuyuki Kagiyama, Taro Nakazato, Kiyoshi Yoshida, Taichi Sakaguchi
No abstract text is available yet for this article.
February 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28179346/radiological-features-of-the-surgically-resected-small-sized-small-cell-lung-cancer-on-computed-tomography
#4
Gouji Toyokawa, Yuka Kozuma, Taichi Matsubara, Naoki Haratake, Shinkichi Takamori, Takaki Akamine, Kazuki Takada, Masakazu Katsura, Fumihiro Shoji, Tatsuro Okamoto, Yoshihiko Maehara
BACKGROUND/AIM: Surgical resection can be applied in cases of early-stage small-cell lung cancer (SCLC). Predicting the histology of SCLC and discriminating SCLC from other histologies would be useful for determining the optimal treatment strategies for small pulmonary nodules that have not been preoperatively diagnosed. MATERIALS AND METHODS: The study population included 17 patients with resected SCLC and 296 patients with adenocarcinoma (ADC) whose preoperative CT were available...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28176811/intestinal-cancer-stem-cells-marked-by-bmi1-or-lgr5-expression-contribute-to-tumor-propagation-via-clonal-expansion
#5
Hirotsugu Yanai, Naho Atsumi, Toshihiro Tanaka, Naohiro Nakamura, Yoshihiro Komai, Taichi Omachi, Kiyomichi Tanaka, Kazuhiko Ishigaki, Kazuho Saiga, Haruyuki Ohsugi, Yoko Tokuyama, Yuki Imahashi, Shuichi Ohe, Hiroko Hisha, Naoko Yoshida, Keiki Kumano, Masanori Kon, Hiroo Ueno
Although the existence of cancer stem cells in intestine tumors has been suggested, direct evidence has not been yet provided. Here, we showed, using the multicolor lineage-tracing method and mouse models of intestinal adenocarcinoma and adenoma that Bmi1- or Lgr5- positive tumorigenic cells clonally expanded in proliferating tumors. At tumor initiation and during tumor propagation in the colon, the descendants of Lgr5-positive cells clonally proliferated to form clusters. Clonal analysis using ubiquitous multicolor lineage tracing revealed that colon tumors derived from Lgr5-positive cells were monoclonal in origin but eventually merged with neighboring tumors, producing polyclonal tumors at the later stage...
February 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28154766/case-of-superficial-cancer-located-at-the-pharyngoesophageal-junction-which-was-dissected-by-endoscopic-laryngopharyngeal-surgery-combined-with-endoscopic-submucosal-dissection
#6
Kenro Kawada, Tatsuyuki Kawano, Taro Sugimoto, Kazuya Yamaguchi, Yuudai Kawamura, Toshihiro Matsui, Masafumi Okuda, Taichi Ogo, Yuuichiro Kume, Yutaka Nakajima, Andres Mora, Takuya Okada, Akihiro Hoshino, Yutaka Tokairin, Yasuaki Nakajima, Ryuhei Okada, Yusuke Kiyokawa, Fuminori Nomura, Takahiro Asakage, Ryo Shimoda, Takashi Ito
Aims. In order to determine the indications of transoral surgery for a tumor located at the pharyngoesophageal junction, the trumpet maneuver with transnasal endoscopy was used. Its efficacy is reported here. Material and Methods. An 88-year-old woman complaining of dysphagia, diagnosed with cervical esophageal cancer, and hoping to preserve her voice and swallowing function was admitted to our hospital. Conventional endoscopy showed that the tumor had invaded the hypopharynx. When inspecting the hypopharynx and the orifice of the esophagus, we asked the patient to blow hard and puff her cheeks with her mouth closed (trumpet maneuver)...
2017: Case Reports in Otolaryngology
https://www.readbyqxmd.com/read/28153772/%C3%AE-1-integrin-signaling-promotes-neuronal-migration-along-vascular-scaffolds-in-the-post-stroke-brain
#7
Teppei Fujioka, Naoko Kaneko, Itsuki Ajioka, Kanako Nakaguchi, Taichi Omata, Honoka Ohba, Reinhard Fässler, José Manuel García-Verdugo, Kiyotoshi Sekiguchi, Noriyuki Matsukawa, Kazunobu Sawamoto
Cerebral ischemic stroke is a main cause of chronic disability. However, there is currently no effective treatment to promote recovery from stroke-induced neurological symptoms. Recent studies suggest that after stroke, immature neurons, referred to as neuroblasts, generated in a neurogenic niche, the ventricular-subventricular zone, migrate toward the injured area, where they differentiate into mature neurons. Interventions that increase the number of neuroblasts distributed at and around the lesion facilitate neuronal repair in rodent models for ischemic stroke, suggesting that promoting neuroblast migration in the post-stroke brain could improve efficient neuronal regeneration...
January 9, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28150999/adaptive-local-information-transfer-in-random-boolean-networks
#8
Taichi Haruna
Living systems such as gene regulatory networks and neuronal networks have been supposed to work close to dynamical criticality, where their information-processing ability is optimal at the whole-system level. We investigate how this global information-processing optimality is related to the local information transfer at each individual-unit level. In particular, we introduce an internal adjustment process of the local information transfer and examine whether the former can emerge from the latter. We propose an adaptive random Boolean network model in which each unit rewires its incoming arcs from other units to balance stability of its information processing based on the measurement of the local information transfer pattern...
February 2, 2017: Artificial Life
https://www.readbyqxmd.com/read/28139646/direct-observation-of-spin-layer-locking-by-local-rashba-effect-in-monolayer-semiconducting-ptse2-film
#9
Wei Yao, Eryin Wang, Huaqing Huang, Ke Deng, Mingzhe Yan, Kenan Zhang, Koji Miyamoto, Taichi Okuda, Linfei Li, Yeliang Wang, Hongjun Gao, Chaoxing Liu, Wenhui Duan, Shuyun Zhou
The generally accepted view that spin polarization in non-magnetic solids is induced by the asymmetry of the global crystal space group has limited the search for spintronics materials mainly to non-centrosymmetric materials. In recent times it has been suggested that spin polarization originates fundamentally from local atomic site asymmetries and therefore centrosymmetric materials may exhibit previously overlooked spin polarizations. Here, by using spin- and angle-resolved photoemission spectroscopy, we report the observation of helical spin texture in monolayer, centrosymmetric and semiconducting PtSe2 film without the characteristic spin splitting in conventional Rashba effect (R-1)...
January 31, 2017: Nature Communications
https://www.readbyqxmd.com/read/28133315/-a-case-of-ascending-colon-cancer-with-extensive-abdominal-wall-abscess
#10
Taichi Kuwahara, Yoshihiro Tokuhisa, Nobuaki Suzuki, Shinobu Tomochika, Yuka Inoue, Hironori Tanaka, Mitsuo Nishiyama, Shinsuke Kanekiyo, Michihisa Iida, Kazuhiko Sakamoto, Shigeru Takeda, Tomio Ueno, Shigefumi Yoshino, Shoichi Hazama, Hiroaki Nagano
A 51-year-old woman was seen in our hospital because an ascending colon tumor with extensive abdominal wall abscess was detected on computed tomography(CT). On the same day, we performed open drainage and laparoscopic assisted ileocolostomy. Postoperative day 35, we performed right hemicolectomy with abdominal wall resection and closure of the colostomy as a radical surgery. After surgery, we started(negative pressure wound therapy: NPWT)to the surgical wound site; hence, the abdominal wall defect could be healed without a musculocutaneous flap...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133150/-two-cases-of-small-intestinal-metastasis-of-lung-cancer
#11
Minako Hoshi, Kimimasa Ikeda, Masaya Higashiguchi, Teruyuki Kobayashi, Kenji Sakai, Taichi Koyama, Takashi Doi, Hirokazu Taniguchi, Masakazu Murakami, Eiji Kurokawa, Itsuko Nakamichi
Case 1: A 66-year-old man who had undergone upper right lobe resection for large cell lung carcinoma 2 months earlier presented with abdominal pain and vomiting. Computed tomography showed intussusception of the small intestine. Partial resection of the small intestine was performed. The tumor was pathologically diagnosed as lung cancer metastasis to the small intestine. The patient died 30 days after surgery. Case 2: A 57-year-old man was admitted to hospital due to appetite loss. Computed tomography showed a large intestinal tumor and a small lung tumor, as well as multiple liver metastases and lymph node metastases...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133143/-use-of-a-posterior-thigh-flap-with-the-gluteus-maximus-for-perineal-reconstruction-a-case-of-fournier-s-gangrene-with-rectal-cancer
#12
Hironori Tanaka, Nobuaki Suzuki, Shinobu Tomochika, Yuka Inoue, Taichi Kuwahara, Kazuhiko Sakamoto, Shigeru Takeda, Tomio Ueno, Shigeru Yamamoto, Tomoko Okita, Sho Yoshimoto, Shigefumi Yoshino, Shoichi Hazama, Masahiko Mutou, Hiroaki Nagano
We present a case of Fournier's gangrene secondary to rectal cancer that was managed with perineal reconstruction using a posterior thigh flap after debridement and tumor resection. A 67-year-old man was admitted with disturbed consciousness as well as hip and right thigh pain. His perineal and gluteal skin was necrotic. CT revealed subcutaneous emphysema that had spread from the rectum to the gluteal region and right thigh. We diagnosed him with Fournier's gangrene, and then removed the necrotic tissue and constructed a sigmoidostomy...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133090/-successful-treatment-of-local-recurrence-of-advanced-gastric-cancer-using-curative-gastrectomy-via-distal-pancreatectomy-after-chemoradiotherapy
#13
Kenji Sakai, Teruyuki Kobayashi, Masaya Higashiguchi, Takashi Doi, Taichi Koyama, Minako Hoshi, Hirokazu Taniguchi, Masakazu Murakami, Kimimasa Ikeda, Eiji Kurokawa, Itsuko Nakamichi
The patient was a 65-year-old woman. She was diagnosed with advanced gastric cancer with liver invasion. After receiving systemic chemotherapy(S-1 plus PTX)for 3 months, she underwent total gastrectomy and partial hepatectomy in May 2008. Because she developed celiac artery circumference lymph node recurrence in November 2010 during postoperative adjuvant chemotherapy consisting of S-1 plus PTX, we changed her chemotherapy regimen to CPT-11 plus CDDP. We observed an increase in the size of the lymph nodes in August 2013 and the response was poor even after switching to DOC...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133077/-a-case-of-angioimmunoblastic-t-cell-lymphoma-merged-with-colorectal-cancer-that-we-were-able-to-resect-after-a-chemotherapy-response
#14
Masaya Higashiguchi, Kenji Sakai, Teruyuki Kobayashi, Takashi Doi, Taichi Koyama, Minako Hoshi, Hirokazu Taniguchi, Masakazu Murakami, Kimimasa Ikeda, Eiji Kurokawa, Itsuko Nakamichi
The patient was 77-year-old man. He visited our hospital with the chief complaint of an abdominal mass in March 2015. We diagnosed the patient with transverse colon cancer and he was suspected of having malignant lymphoma. In March 2016, we attempted to perform right hemicolectomy for the transverse colon cancer, but it was difficult because swollen lymph nodes had formed a large mass with the surrounding tissue, including vessels of the mesentery. We could only complete the surgery after mesenteric lymph node biopsy...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28133076/-a-case-report-a-case-of-a-rapidly-growing-anal-canal-origin-malignant-melanoma
#15
Teruyuki Kobayashi, Kimimasa Ikeda, Kenji Sakai, Takashi Doi, Taichi Koyama, Minako Hoshi, Hirokazu Taniguchi, Masakazu Murakami, Eiji Kurokawa
An 85-year-old woman presented to her local physician in early August 2015 with a new-onset "swelling" of the anal region and was referred to our department for evaluation and treatment at the beginning of September. At our initial evaluation, the rectal examination showed a black mass lesion, approximately 3.0×1.5 cm in size, in the anal canal by November, the mass had grown to approximately 7.0×3.5 cm in size. The lesion was diagnosed as malignant melanoma by colonoscopic biopsy. Abdominal cystography computed tomography showed an area of lymphadenopathy around the rectum, but no distant metastasis was detected...
November 2016: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28118209/menstrual-and-reproductive-factors-in-the-risk-of-thyroid-cancer-in-japanese-women-the-japan-public-health-center-based-prospective-study
#16
Sangah Shin, Norie Sawada, Eiko Saito, Taiki Yamaji, Motoki Iwasaki, Taichi Shimazu, Shizuka Sasazuki, Manami Inoue, Shoichiro Tsugane
The aim of this study was to evaluate the associations between menstrual and reproductive factors and thyroid cancer risk among Japanese women. A total 54 776 women aged 40-69 years completed a self-administered questionnaire, which included menstrual and reproductive history. During 1990-2012, 187 newly diagnosed cases of thyroid cancer were identified. Hazard ratios (HRs) and 95% confidence intervals (CIs) for menstrual and reproductive factors and incidence of thyroid cancer were estimated using Cox proportional hazards regression...
January 21, 2017: European Journal of Cancer Prevention
https://www.readbyqxmd.com/read/28107485/better-visual-outcome-by-intraocular-lens-ejection-in-geriatric-patients-with-ruptured-ocular-injuries
#17
Hiroki Kaneko, Tetsu Asami, Tadasu Sugita, Taichi Tsunekawa, Toshiyuki Matsuura, Kei Takayama, Kentaro Yamamoto, Shu Kachi, Yasuki Ito, Shinji Ueno, Norie Nonobe, Keiko Kataoka, Ayana Suzumura, Takeshi Iwase, Hiroko Terasaki
Ocular trauma is one of the leading causes of visual impairment worldwide. Because of the popularity of cataract surgeries, aged individuals with ocular trauma commonly have a surgical wound in their eyes. The purpose of this study was to evaluate the visual outcome of cases that were coincident with intraocular lens (IOL) ejection in the eyes with ruptured open-globe ocular injuries. Consecutive patients with open-globe ocular injuries were first reviewed. Patients' characteristics, corrected distance visual acuities (CDVAs) over 3 years after the trauma, causes of injuries, traumatic wound patterns, and coexistence of retinal detachment were examined...
2017: PloS One
https://www.readbyqxmd.com/read/28099257/antifibrotic-effect-of-saturated-fatty-acids-via-endoplasmic-reticulum-stress-response-in-rat-pancreatic-stellate-cells
#18
Lingaku Lee, Tetsuhide Ito, Taichi Nakamura, Robert T Jensen, Hisato Igarashi, Ryoichi Takayanagi
OBJECTIVES: We investigated the effect of saturated fatty acids on chronic pancreatitis pathogenesis by elucidating the endoplasmic reticulum (ER) stress response in pancreatic stellate cells (PSCs), which are major effector cells in pancreatic fibrosis. METHODS: Wistar Bonn/Kobori rats were fed either control diet or high-fat diet (HFD) for 4 weeks. Meanwhile, cultured rat PSCs were stimulated with thapsigargin, an ER stress inducer, or palmitic acid (PA). Pancreatic fibrosis, expressions of fibrosis-related and ER stress-related proteins and mRNA, cell viability, and apoptosis were examined...
March 2017: Pancreas
https://www.readbyqxmd.com/read/28077650/melanin-or-melanin-like-substance-interacts-with-the-n-terminal-portion-of-prion-protein-and-inhibits-abnormal-prion-protein-formation-in-prion-infected-cells
#19
Taichi Hamanaka, Keiko Nishizawa, Yuji Sakasegawa, Ayumi Oguma, Kenta Teruya, Hiroshi Kurahashi, Hideyuki Hara, Suehiro Sakaguchi, Katsumi Doh-Ura
Prion diseases are progressive fatal neurodegenerative illnesses caused by the accumulation of transmissible abnormal prion protein (PrP). To find treatments for prion diseases, we searched for substances from natural resources that inhibit abnormal PrP formation in prion-infected cells. We found that high-molecular-weight components from insect cuticle extracts reduced abnormal PrP levels. The chemical nature of these components was consistent with that of melanin. In fact, synthetic melanin produced from tyrosine or 3-hydroxy-l-tyrosine inhibited abnormal PrP formation...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28064545/androgen-receptor-activation-a-prospective-therapeutic-target-for-bladder-cancer
#20
Taichi Mizushima, Kathleen A Tirador, Hiroshi Miyamoto
Patients with non-muscle-invasive or muscle-invasive bladder cancer undergoing surgery and currently available conventional therapy remain having a high risk of tumor recurrence or progression, respectively. Novel targeted molecular therapy is therefore expected to improve patient outcomes. Meanwhile, substantially higher incidence of bladder cancer in men has prompted research on androgen-mediated androgen receptor (AR) signaling in this malignancy. Indeed, preclinical evidence has suggested that AR signaling plays an important role in urothelial carcinogenesis and tumor outgrowth as well as resistance to some of the currently available conventional non-surgical therapies...
January 19, 2017: Expert Opinion on Therapeutic Targets
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