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Search Results: 1 - 10 of 1199 matches for " Shoji Endo "
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Keisuke Ishikura,Teruo Miyazaki,Song-Gyu Ra,Shoji Endo
Journal of Sports Science and Medicine , 2011,
Abstract: Taurine included abundantly in skeletal muscle, particularly in the slow-twitch fibers, enhances exercise performance. However, the exact mechanisms for this effect have been unclear. The present study investigated the influence of taurine supplementation on amino acids profile in skeletal muscles as one of mechanisms in the enhancement of exercise performance induced by taurine. In the rats that received taurine solution, amino acids concentrations were comprehensively quantified in two portions with different fiber compositions in the fast-twitch fiber dominant (FFD) gastrocnemius muscle after 2 weeks, and in the gastrocnemius and additional other FFD muscles, liver, and plasma with exhausted exercise after 3 weeks. In the FFD muscles after 2 weeks, a common phenomenon that decreased concentrations of threonine (-16%), serine (-15~-16%), and glycine (-6~-16%) were observed, and they are categorized in the pyruvate precursors for hepatic gluconeogenesis rather than biosynthesis, polar, and side-chain structures. The decreases in the three amino acids were significantly emphasized after an additional week of taurine supplementation in the FFD muscles (p values in three amino acids in these tissues were less than 0.001-0.05), but not in the liver and plasma, accompanied with significantly increase of running time to exhaustion (p <0.05). In contrast, the three amino acids (threonine and serine; p < 0.05, glycine; p < 0.01) and alanine (p < 0.01) in the liver were significantly decreased and increased, respectively, following the exhaustive exercise. In conclusion, the taurine-induced reductions of these amino acids in skeletal muscle might be one of the mechanisms which underpin the enhancement of exercise performance by taurine
Stau Kinks at the LHC
Shoji Asai,Yuya Azuma,Motoi Endo,Koichi Hamaguchi,Sho Iwamoto
Physics , 2011, DOI: 10.1007/JHEP12(2011)041
Abstract: The kink signature of charged tracks is predicted in some SUSY models, and it is very characteristic signal at collider experiments. We study the kink signature at LHC using two models, SUSY models with a gravitino LSP and a stau NLSP, and R-parity violating SUSY models with a stau (N)LSP. We find that a large number of kink events can be discovered in a wide range of the SUSY parameters, when the decay length is O(10-10^5)mm. Model discrimination by identifying the daughter particles of the kink tracks is also discussed.
A giant adrenal pseudocyst presenting with right hypochondralgia and fever: a case report
Masashi Momiyama, Kenichi Matsuo, Kenichi Yoshida, Kuniya Tanaka, Hirotoshi Akiyama, Shoji Yamanaka, Itaru Endo
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-135
Abstract: A 52-year-old Japanese man was admitted with right hypochondralgia and a chill. Abdominal computed tomography revealed a well-defined cystic mass measuring 19 cm which was located in the right adrenal region and the contents of which were not enhanced with contrast medium. Abdominal ultrasonography revealed a heterogeneously hypo-echoic lesion with a peripheral high-echoic rim. Serum hormonal levels were almost normal. Despite treatment with antibiotics, the high fever persisted. Based on these findings, we made a preoperative diagnosis of a right adrenal cyst with infection. However, the possibility of malignancy still remained. The patient underwent laparotomy and right adrenal cyst excision with partial hepatectomy in order to relieve the symptoms and to confirm an accurate diagnosis. Histological examination revealed an adrenal pseudocyst with infection. His condition improved soon after the operation.We report a case of a giant adrenal pseudocyst with infection. Surgery is required for symptomatic cases in order to relieve the symptoms and in cases of uncertain diagnosis.In 1903, Doran attributed the first case of adrenal cyst to Greiselius [1]. In 1670, he described a 45-year-old man whose death resulted from a rupture of the cyst. There were only seven cases of adrenal cyst reported by 1906. Wahl questioned the rarity of adrenal cysts in 1951 and found an autopsy incidence of 1 in 1555 [2]. The paucity of reports in the literature was a manifestation of clinical silence rather than true rarity. In 1966, Foster described 220 cases of adrenal cyst in the world's literature [3], while in 1979 Incze et al. reported 250 cases [4].Cystic lesions of the adrenal gland are uncommon and demonstrate a spectrum of histological changes and may vary from pseudocysts to malignant cystic neoplasms. An adrenal pseudocyst is a fibrous-surrounded cyst within the adrenal gland devoid of a recognizable layer of lining cells. The incidence of adrenal pseudocyst with infection is v
Extendibility Evaluation of Industrial EUV Source Technologies for kW Average Power and 6.x nm Wavelength Operation  [PDF]
Akira Endo
Journal of Modern Physics (JMP) , 2014, DOI: 10.4236/jmp.2014.55039

Interests in the extendibility are growing after the introduction of the LPP (Laser Produced Plasma) EUV source technology in the semiconductor industry, towards higher average power and shorter wavelength, based on the basic architecture of the established LPP EUV source technology. It is discussed in this article that the power scaling of the 13.5nm wavelength source is essentially possible by a slight increase of the driving laser power, CE (Conversion Efficiency) and EUV collection efficiency by some introduction of novel component technologies. Extension of the EUV wavelength towards BEUV (Beyond EUV), namely 6.x nm is discussed based on the general rule of the UTA (Unresolved Transition Arrays) of high Z ions, and development of multilayer mirrors in this particular wavelength region. Technical difficulties are evaluated for the extension of the LPP source technology by considering the narrower mirror bandwidth and higher melting temperature of the candidate plasma materials. Alternative approach based on the superconducting FEL is evaluated in comparison with the LPP source technology for the future solution.

A Reaction-Diffusion Algorithm for Segmentation of Three-Dimensional Sinusoidal Networks in Rats Fed a High-Fat and High-Cholesterol Diet: New Insights and Evaluation  [PDF]
Hiroto Shoji
Journal of Biosciences and Medicines (JBM) , 2018, DOI: 10.4236/jbm.2018.610004
Abstract: Microstructures in the liver are primarily composed of hepatocytes, hepatic blood, and biliary vessels. Because each hepatocyte comes in contact with both vessels, these vessels form three-dimensional (3D) periodic network patterns. Confocal microscope images are useful for observing 3D structures; however, it is necessary to explicitly describe the vessel structures using 3D images of sinusoidal endothelial cells. For this purpose, we propose a new approach for image segmentation based on the Turing reaction-diffusion model, in which temporal and spatial patterns are self-organized. Turing conditions provided reliable tools for describing the 3D structures. Moreover, using the proposed method, the sinusoidal patterns of rats fed a high-fat/high-cholesterol diet were examined; these rats exhibited pathological features similar to those of human patients with nonalcoholic steatohepatitis related to metabolic syndrome. The findings showed that the parameter in diffusion terms differed significantly among the experimental groups. This observation provided a heuristic argument for parameter selection leading to pattern recognition problems in diseased rats.
Endoscopic therapy using an endoscopic variceal ligation for minute cancer of the esophagogastric junction complicated with esophageal varices: a case report
Tomoyuki Akiyama, Yasunobu Abe, Hiroshi Iida, Hiroki Endo, Kunihiro Hosono, Kyoko Yoneda, Hirokazu Takahashi, Masahiko Inamori, Akihide Ryo, Shoji Yamanaka, Yoshiaki Inayama, Atsushi Nakajima
Journal of Medical Case Reports , 2010, DOI: 10.1186/1752-1947-4-149
Abstract: We present the case of a 77-year-old Japanese man with alcoholic cirrhosis who underwent a routine endoscopy examination as a screening procedure for esophageal varices and was incidentally diagnosed as having minute cancer of the esophagogastric junction with esophageal varices. Endoscopic ultrasonography findings suggested that the minute cancer was a non-invasive carcinoma (carcinoma in situ) and a 2 mm in diameter blood vessel, feeding the esophageal varices, pierced the lesion. Following the examination, we carried out endoscopic treatment of the minute cancer and esophageal varices. Endoscopic variceal ligation was performed using a pneumo-activated device (Sumitomo Bakelite, Tokyo, Japan). Two years after the treatment, during the follow-up endoscopic examination on the patient, recurrence of carcinoma was not detected endoscopically or histologically.Endoscopic therapy using an endoscopic variceal ligation device for minute cancer of the esophagogastric junction, complicated with esophageal varices, may be an acceptable and easily applicable method.Minute cancer is a gastric cancer lesion of less than 5 mm in its maximum diameter, with tumor cells confined to the mucosa. Lymph node metastases, meanwhile, are extremely rare [1,2]. These characteristics of minute cancer provide the basis for using endoscopic therapy as a curative treatment [3]. In this report, we describe endoscopic therapy using an endoscopic variceal ligation (EVL) device for minute cancer complicated with esophageal varices.A 77-year-old Japanese man with alcoholic cirrhosis had been undergoing a follow-up laboratory examination every month for three years. He had been undergoing imaging studies such as ultrasonography and computed tomography every month as screening procedures for hepatocellular carcinoma, and endoscopic examination every year to monitor esophageal varices. During one such routine examination, he was diagnosed as having minute cancer of the esophagogastric junction (EGJ) (
Cell Cycle-Dependent Turnover of 5-Hydroxymethyl Cytosine in Mouse Embryonic Stem Cells
Junji Otani, Hironobu Kimura, Jafar Sharif, Takaho A. Endo, Yuichi Mishima, Toru Kawakami, Haruhiko Koseki, Masahiro Shirakawa, Isao Suetake, Shoji Tajima
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0082961
Abstract: Hydroxymethylcytosine in the genome is reported to be an intermediate of demethylation. In the present study, we demonstrated that maintenance methyltransferase Dnmt1 scarcely catalyzed hemi-hydroxymethylated DNA and that the hemi-hydroxymethylated DNA was not selectively recognized by the SRA domain of Uhrf1, indicating that hydroxymethylcytosine is diluted in a replication-dependent manner. A high level of 5-hydroxymethylcytosine in mouse embryonic stem cells was produced from the methylcytosine supplied mainly by de novo-type DNA methyltransferases Dnmt3a and Dnmt3b. The promoter regions of the HoxA gene cluster showed a high hydroxymethylation level whilst the methylcytosine level was quite low, suggesting that methylated CpG is actively hydroxylated during proliferation. All the results indicate that removal and production of hydroxymethylcytosine are regulated in replication-dependent manners in mouse embryonic stem cells.
Effects of hot-water extract of Paecilomyces hepiali on hypertension parameters in Spontaneously Hypertensive Rats  [PDF]
Alfred Chioza, Shoji Ohga
Advances in Microbiology (AiM) , 2014, DOI: 10.4236/aim.2014.48048

In this study, effects of hot water extract of Paecilomyces hepiali mycelia on hypertension parameters in spontaneously hypertensive rats (SHR) were investigated. The tested parameters included blood pressure, blood and urine biochemical composition, renin and angiotensin II levels in the blood. Prior to these tests, the extract was examined for toxicity. The fungus was cultivated in a solid medium composed of 40 g brown rice, 0.32 g glucose, 0.65 g sucrose, 2 g peptone and 65 ml corn steep liquor. No abnormality or harmful effects were observed in the toxicity test. Administration of a continuous-dose, once daily, to SHR for 27 weeks (from 13 weeks of age) decreased the systolic blood pressure (SBP) significantly. Levels of blood urea nitrogen, β-lipoprotein lipid peroxides and low density lipoprotein were significantly lower in the treated groups when compared to the control group. Urinary protein was significantly reduced in the middle and high dose groups. In comparison with the control group (0 mg/kg/10ml/day), significantly higher values were obtained for total cholesterol in groups that were given middle (170 mg/kg/10ml/day) and high (250 mg/kg/10ml/day) dosages. In all dosages (low, middle and high) the values for triglyceride were significantly higher than value found in the control group. In terms of angiotensin II levels, the value in the control group was markedly higher than values in the other groups. The results suggest that oral administration of hot water extract of P. hepiali mycelia has ability to control hypertension in rats.

Cultivated Mushrooms in Malawi: A Look at the Present Situation  [PDF]
Alfred Chioza, Shoji Ohga
Advances in Microbiology (AiM) , 2014, DOI: 10.4236/aim.2014.41002

This paper presents the status of mushroom cultivation in Malawi. This is a developing country located in southeastern Africa between latitudes 9°25' South and 17°08' South and longitudes 33° East and 36°East. Almost all the mushroom cultivators in the country are growing Pleurotus ostreatus. This species is most preferred because of its easiness to cultivate using the low-cost cultivation method being practiced in the country. On average, the annual P. ostreatus production is estimated at 240 kg per grower. Mushroom cultivators are selling their produce at prices ranging from MK800 (USD2.04) to MK2000 (USD5.10) per kg. At present, there are four institutions that are producing spawn namely Bunda College (Lilongwe University of Agriculture and Natural resources), Bvumbwe Agricultural Research Station, Natural Resources College and the Biology Department at Chancellor College, University of Malawi. Currently, a total of about 1307 bottles (330 ml each) of P. ostreatus spawn are sold by these four spawn producers per month. Mushroom cultivation is not that popular in Malawi. This may be, partly, attributed to lack of know-how and awareness on the economic, nutritive and medicinal benefits of cultivated mushrooms. Some of the major supermarkets do sell Agaricus bisporus mushrooms which are imported from the Republic of South Africa. They also sell Pleurotus ostreatus

A Comparative Study on Chemical Composition and Pharmacological Effects of Paecilomyces hepiali and Wild Ophiocordyceps sinensis  [PDF]
Alfred Chioza, Shoji Ohga
Advances in Microbiology (AiM) , 2014, DOI: 10.4236/aim.2014.412093
Abstract: This study looked at comparison of chemical components and pharmacological activity between wild Ophiocordyceps sinensis and Paecilomyces hepiali. The chemical components investigated included amino acids, vitamins, dietary elements, protein, lipid, ash, carbohydrates, crude fibre, ergosterol and mannitol. Studies on pharmacological activity included anti-platelet aggregation, inhibitory effect on IL-8 gene expression, anti-mutagenic activity, skin whitening effect and impro- vement activity on human skin texture. The results show that P. hepiali has a larger total content of seven essential amino acids (leucine, lysine, methionine, phenylalanine, tryptophan, tyrosine and valine) than O. sinensis, 8580 mg/100g and 6180 mg/100g respectively. The total content of dietary elements analysed (potassium, magnesium, zinc, copper, manganese and selenium) was also higher in P. hepiali (3135 mg/100g) than that in O. sinensis (2445 mg/100g). The total content of four vitamins (B1, B2, B6 and E) was almost equal for both fungi. Paecilomyces hepiali had more content of protein, lipid, ash, carbohydrate, ergosterol and mannitol than O. sinensis. However, the contents of lipid and ash were not significantly different between
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