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Dive into the research topics where Hisashi Urata is active.

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Featured researches published by Hisashi Urata.


Surgery Today | 1995

An intestinal fistula in a 3-year-old child caused by the ingestion of magnets: Report of a case

Makoto Honzumi; Chika Shigemori; Hideki Ito; Yasuhiko Mohri; Hisashi Urata; Takayuki Yamamoto

We describe herein the case of a 3-year-old child in whom a jejunoileal fistula was caused by the ingestion of magnets. This case report demonstrates that if more than one magnet is found as a foreign body in the intestine, they should not be left untreated even if there are no sharp edges and, it seems they could be evacuated spontaneously. This recommendation is made because the magnets will attract each other and hold the intestinal walls between them, causing necrosis and resulting in intestinal perforation or a fistula.


Pediatric Surgery International | 1998

Teratoma of the tongue in neonates: report of a case and review of the literature.

Keiichi Uchida; Hisashi Urata; Hiroshi Suzuki

Abstract A female newborn presented with a huge mass protruding from the mouth. She had no respiratory distress but had difficulty swallowing. The mass originated from the tongue and was completely extirpated on the day of birth. The histologic diagnosis was mature teratoma. Three days later, another mass measuring 1 cm in diameter was found attached to the upper pharyngeal wall and was also completely extirpated 20 days after birth. The histologic diagnosis was also mature teratoma. The infant had a complete cleft palate, but no other malformation was found. Two years after surgery there is no sign of recurrence.


Nutrition | 1996

Elimination rate of fat emulsion particles from plasma in Japanese subjects as determined by a triglyceride clamp technique

Keiji Iriyama; Takashi Tsuchibashi; Chikao Miki; Ilunga Kalembeyi; Hua Li; Hisashi Urata; Reiko Saitoh

The elimination rate of emulsion triglyceride (TG) from plasma was investigated in Japanese subjects by a plasma TG clamp technique. Two different studies were performed. In Study 1, a lipid emulsion (20% long-chain triglyceride emulsion: LCT) was infused into a healthy research associate to achieve a certain concentration of TG in the plasma. Thereafter, the infusion rate was adjusted to maintain the chosen concentrations of TG in plasma (namely, 4-5 mmol/L, 3-4 mmol/L, and approximately 2 mmol/L) over a period of 160 min by measuring plasma TG concentrations at 10-min intervals. Concentrations of TG in plasma were clamped within 2.13 +/- 0.13 mmol/L by an infusion rate of 0.10 g.kg-1.h-1, within 3.34 +/- 0.20 mmol/L by an infusion rate of 0.14 g.kg-1.h-1, and within 4.46 +/- 0.22 mmol/L by an infusion rate of 0.11 g.kg-1.h-1. The mean rate of infusion of emulsified TG that had maintained the steady concentrations of TG in plasma was limited to the very narrow range of 0.12 +/- 0.02 g of TG.kg-1.h-1 regardless of the chosen concentration of TG in plasma. Concentrations of nonesterified fatty acids (NEFA) also remained at a fixed level of 1.378 +/- 0.103 mEq/L regardless of the chosen concentration of TG in the plasma. Study 2 was undertaken to determine whether plasma TG concentration reached a plateau during a period when emulsion TG was infused into three different subjects at a rate of 0.12 g.kg-1.h-1. The plasma TG concentrations were steady at a level of 2.04 +/- 0.32 mmol/L, and the plasma NEFA concentrations remained at a fixed level of 1.33 +/- 0.13 mEq/L, over a period of 160 min after 50-min priming infusion. These results indicate that the plasma TG elimination rate was limited to the narrow range of 0.12 +/- 0.02 g.kg-1.h-1 when the fat emulsion was infused into Japanese subjects in a steady state. However, the plasma TG elimination rate in Japanese subjects appeared to be lower than that of Europeans. This may be due to a difference in lipoprotein lipase activity caused by different dietary habits, namely, a lower fat intake.


Scientific Reports | 2017

Fish oil-enriched nutrition combined with systemic chemotherapy for gastrointestinal cancer patients with cancer cachexia

Yumiko Shirai; Yoshinaga Okugawa; Asahi Hishida; Aki Ogawa; Kyoko Okamoto; Miki Shintani; Yuki Morimoto; Ryutaro Nishikawa; Takeshi Yokoe; Koji Tanaka; Hisashi Urata; Yuji Toiyama; Yasuhiro Inoue; Motoyoshi Tanaka; Yasuhiko Mohri; Ajay Goel; Masato Kusunoki; Donald C. McMillan; Chikao Miki

Despite recent advances in chemotherapy for gastrointestinal cancer, a crucial factor related to poor prognosis is reduced tolerance to chemotherapy induced by cancer cachexia. Fish oil (FO)-derived eicosapentaenoic acid (EPA) modulates inflammation in patients with various malignancies; however, the impact of FO-enriched nutrition as a combined modality therapy on clinical outcomes remains controversial. We systemically analysed chronological changes in biochemical and physiological status using bioelectrical impedance analysis in 128 gastrointestinal cancer patients provided with or without FO-enriched nutrition during chemotherapy. Furthermore, we evaluated the clinical significance of FO-enriched nutrition and clarified appropriate patient groups that receive prognostic benefits from FO-enriched nutrition during treatment of gastrointestinal cancer. The control group showed significant up-regulation of serum CRP) levels and no significant difference in both skeletal muscle mass and lean body mass. In contrast, the FO-enriched nutrition group showed no changes in serum CRP concentration and significantly increased skeletal muscle mass and lean body mass over time. Furthermore, high CRP levels significantly correlated with reduced tolerance to chemotherapy, and FO-enriched nutrition improved chemotherapy tolerance and prognosis, particularly in gastrointestinal cancer patients with a modified Glasgow prognostic score (mGPS) of 1 or 2. We conclude that FO-enriched nutrition may improve the prognosis of patients with cancer cachexia and systemic inflammation (i.e., those with a mGPS of 1 or 2).


Surgery Today | 1998

Constant infusion rates of lipid emulsions to stabilize plasma triglyceride concentrations: medium-chain triglyceride/long-chain triglyceride emulsions (MCT/LCT) versus LCT.

Keiji Iriyama; Chikao Miki; Takahito Inoue; Nobuaki Kawarabayashi; Hisashi Urata; Chika Shigemori

As medium-chain triglyceride emulsions (MCT) are more rapidly hydrolyzed than long-chain triglyceride emulsions (LCT), MCT/LCT tends to be infused faster than LCT. The purpose of the present study was to determine the most appropriate infusion rate for MCT/LCT to stabilize plasma concentrations of triglyceride (TG), being equivalent to the optimal infusion rate of the emulsion. A TG clamp was set up by raising the mean ± SD concentrations of TG in plasma, being 1.08 ± 0.18Δ mmoll−1 for LCT, and 1.65 ± 0.31 Δ mmoll−1 for MCT/LCT after a 50-min priming infusion of each emulsion. Thereafter, the infusion rate of lipid was controlled every 10 min to maintain a steady concentration of TG for a period of 150 min. A constant infusion of glucose at 0.32 g/kg body weight (BW) per h was administered for the test period. The weight-based rate of the infusion to maintain a steady state of plasma TG concentrations did not differ between MCT/LCT and LCT, being 0.125 ± 0.013vs 0.117 ± 0.021 g/kg BW per h, while the molar-based infusion rate was 0.203 ± 0.021 mmol/kg BW per h for MCT/LCT and 0.132 ± 0.023 mmol/kg BW per h for LCT (P < 0.05). These results suggest that although 54% more molar MCT/LCT-TG can be hydrolyzed during a constant infusion, MCT/LCT should not be infused at a rate faster than 0.1 g/kg BW per h under a steady state.


European Journal of Surgery | 2001

Serum concentration of hepatocyte growth factor predicts perioperative surgical stress in children.

Keiichi Uchida; Chikao Miki; Hisashi Urata; Masato Kusunoki

OBJECTIVE To find out whether preoperative serum concentrations of hepatocyte growth factor (HGF) can indicate the general condition of sick children and can predict their postoperative inflammatory response. DESIGN Non-randomised study. SETTING University hospital, Japan. SUBJECTS 41 children who required operation and 41 healthy controls. INTERVENTIONS Samples of peripheral venous blood were obtained during the operation. MAIN OUTCOME MEASURES Circulating concentrations of HGF, interleukin-6 (IL-6), and C-reactive protein (CRP); neutrophil counts; and nutritional variables including serum cholinesterase, albumin, and body weight: ideal body weight ratio. RESULTS The mean serum concentration of HGF in the patients was significantly higher than in the normal controls. Preoperative HGF was related to the preoperative nutritional state, the postoperative IL-6 response, and the development of infective complications. CONCLUSIONS The serum HGF concentration may be a useful variable for evaluating general condition and predicting perioperative surgical stress in sick children.


Oncology Letters | 2018

Genetic influence of cytokine polymorphisms on the clinical outcome of Japanese gastrointestinal cancer patients in palliative care

Asahi Hishida; Yoshinaga Okugawa; Yuhki Morimoto; Yumiko Shirai; Kyoko Okamoto; Sachiko Momokita; Aki Ogawa; Koji Tanaka; Ryutaro Nishikawa; Yuji Toiyama; Yasuhiro Inoue; Hiroyuki Sakurai; Hisashi Urata; Motoyoshi Tanaka; Donald C. McMillan; Chikao Miki

Gastrointestinal cancer is one of the most common causes of mortality globally. The present study examined the influence of cytokine genetic polymorphisms [interleukin (IL)-1B C-31T, IL-1RN VNTR, IL-6 C-634G, IL-8 T-251A, IL-10 T-819C and IL-10 A-1082G] on clinical outcomes in patients with gastrointestinal cancer in palliative care. A total of 59 patients with gastrointestinal cancer who were admitted to Iga City General Hospital were analyzed. Genotyping was conducted using a polymerase chain reaction with confronting two-pair primers. Patients with at least one IL-1RN 2 allele demonstrated a significantly better survival (P=0.0275) while those with IL-6-634 G/G demonstrated a worse survival (P=0.0024). Multivariate analyses using the Cox proportional hazard model revealed that those with at least one IL-1RN 2 allele, IL-6-634 G/G or IL-10-1082 A/G had a significantly elevated adjusted hazard ratio of 9.20 (P=0.014), 41.01 (P=0.001) or 6.49 (P=0.046), respectively, compared with those with each homozygous wild-type polymorphism. In addition, the evaluation of weight loss by genotype revealed the potential influence of IL-10 T-819C genotype (P=0.072). IL-1RN, IL-6 and IL-10 polymorphisms were associated with the survival of patients with gastrointestinal cancer, suggesting the clinical feasibility of genetic testing in patients with gastrointestinal cancer in palliative care.


Journal of Palliative Care & Medicine | 2017

Clinical Impact of the AKT1 rs1130233 SNP in Japanese GastrointestinalCancer Patients with Palliative Care

Takuto Morishita; Asahi Hishida; Yoshinaga Okugawa; Yuuki Morimoto; Yumiko Shirai; Kyoko Okamoto; Aki Ogawa; Koji Tanaka; Ryutaro Nishikawa; Yuji Toiyama; Yasuhiro Inoue; Hiroyuki Sakurai; Hisashi Urata; Motoyoshi Tanaka; Chikao Miki

Objective: Cancer patients often suffer from chronic inflammation, anorexia and the resultant decrease of nutrient intake, followed by weight loss and muscle wasting called “sarcopenia”. Such conditions are known as “cachexia”. In this study, we examined the associations between genetic polymorphisms of AKT1 rs1130233, ICAM1 rs281432, SELP rs6128 and TNSRSF1A rs4149570, which are reportedly associated with cachexia in Caucasians, together with LIF rs929271, in Japanese gastrointestinal cancer patients with palliative care. Methods: The study subjects were 59 patients (37 males and 22 females) with gastrointestinal cancers who visited the outpatient clinic at Iga General Hospital from December 2011 till August 2015. Genotypings for AKT1 rs1130233, ICAM1 rs281432, SELP rs6128, TNSRSF1A rs4149570 and LIF rs929271 were conducted with polymerase chain reaction with confronting two-pair primers (PCR-CTPP) or the Taqman SNP Genotyping assay. Associations of these SNPs with patients’ prognosis as well as weight loss defined as weight loss more than 5 percent during 6 months after the initiation of chemotherapy were evaluated. Results: A significant increase in the risk of 5% weight loss was observed in those with A/G genotype AKT1 rs1130233 polymorphism (AKT1 A/G vs. G/G, adjusted odds ratio [aOR]=7.11; 95%CI: 1.41-35.7), or in those with at least one A allele of AKT1 rs1130233 (AKT1 A/G+A/A vs. G/G, aOR=4.57; 95% CI: 1.14-18.3) when adjusted for age, sex and UICC clinical stage 4. There was no statistically significant correlation of the polymorphisms examined with patients’ survival. Conclusion: The present study revealed that AKT1 rs1130233 A allele may play a key role in the development of cancer cachexia. Given the involvement of AKT1 in the development of cancer as well as in apoptosis, it would be worth studying the roles of this molecule in human cancers further from clinical, epidemiological and biological viewpoints in the near future.


Surgery Today | 2005

Seprafilm does not aggravate intraperitoneal septic conditions or evoke systemic inflammatory response.

Keiichi Uchida; Hisashi Urata; Yasuhiko Mohri; Mikihiro Inoue; Chikao Miki; Masato Kusunoki


Journal of Pediatric Surgery | 2004

Predicting factor of quality of life in long-term jaundice-free survivors after the Kasai operation

Keiichi Uchida; Hisashi Urata; Hiroshi Suzuki; Mikihiro Inoue; Naomi Konishi; Toshimitsu Araki; Chikao Miki; Masato Kusunoki

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