Morphologic change of Yoshida sarcoma cells and coelothelioma cells after exposing to the cell toxin from X-ray-irradiated animal

The unsaturated fatty acid fraction extracted from the liver of rabbit irradiated with X-rays exerts a strong cytotoxic effect on human coelothelioma cells and Yoshida sarcoma cells both in vitro and in vivo. The cell damage seems to initiate at the nucleus, finally leading to the complete cytolysis. The inhibiting effect of this substance on the mitosis of Yoshida sarcoma cells can be observed, especially marked from prophase up to metaphase giving almost the same results obtained after X-ray irradiation. From these results and the observations reported by several authors on the cell damage by X-ray irradiation, weshould call special attention to the fact that the essential mechanism of X-ray irradiation can be attributed to the cell toxin produced after the irradiation.</p

Nonalcoholic fatty liver disease in Japanese junior high school students: its prevalence and relationship to lifestyle habits

The original publication is available at www.springerlink.comDespite the increase in nonalcoholic fatty liver disease (NAFLD) in Japanese adults, its prevalence in adolescents remains unclear. This prompted us to evaluate the incidence and clinical characteristics of NAFLD among junior high school students. A population-based cross-sectional study was conducted among students in a single junior high school in Nagano prefecture. Serum alanine aminotransferase (ALT) and gamma-glutamyltransferase (gamma GT) measurements and abdominal ultrasonography were performed in 249 and 288 students in 2004 and 2007, respectively. In the latter survey, student lifestyle habits were also assessed, using questionnaires. The prevalence of NAFLD was 4.4% and 4.5% in 2004 and 2007, respectively, which was lower than that of obesity (10.0% and 5.9%). Body mass index and ALT and gamma GT levels increased significantly with hepatic steatosis severity. Multivariate logistic regression analysis demonstrated that the presence of obesity and an ALT level of 30 U/L or more were independent predictors of NAFLD (odds ratio 16.9, P < 0.001 and odds ratio 16.6, P = 0.001, respectively). The ratios of students commuting to and from school by car and not doing sports outside of school were higher in NAFLD students compared with non-NAFLD ones. Such tendencies were observed independently of the presence of obesity. Additionally, one obese student with severe steatosis and liver dysfunction was diagnosed as having nonalcoholic steatohepatitis (NASH). Approximately 4% of junior high school students had NAFLD that was primarily associated with obesity and reduced daily physical activity. Serum ALT measurement during school check-ups is recommended for the early detection of young adolescent NAFLD/NASH.ArticleJOURNAL OF GASTROENTEROLOGY. 45(6):666-672 (2010)journal articl

Morphologic studies of bone marrow cells exposed to the phospholipid fraction from the liver of irradiated animal, an experiment in vitro

With the purpose of revealing the biological effects of the X-ray irradiation the authors extracted phospholipids from the liver of irradiated animals and proved that this substance has the action to inhibit the growth of the bone marrow cells, the motility of pseudo-eosinophilis and the erythropoiesis in tissue culture, suggesting that the injury will mainly be induced by the toxic substances produced by irradiation.</p

Risk-adjusted therapy for pediatric non-T cell ALL improves outcomes for standard risk patients: results of JACLS ALL-02

This study was a second multicenter trial on childhood ALL by the Japan Childhood Leukemia Study Group (JACLS) to improve outcomes in non-T ALL. Between April 2002 and March 2008, 1138 children with non-T ALL were enrolled in the JACLS ALL-02 trial. Patients were stratified into three groups using age, white blood cell count, unfavorable genetic abnormalities, and treatment response: standard risk (SR), high risk (HR), and extremely high risk (ER). Prophylactic cranial radiation therapy (PCRT) was abolished except for CNS leukemia. Four-year event-free survival (4yr-EFS) and 4-year overall survival (4yr-OS) rates for all patients were 85.4% ± 1.1% and 91.2% ± 0.9%, respectively. Risk-adjusted therapy resulted in 4yr-EFS rates of 90.4% ± 1.4% for SR, 84.9% ± 1.6% for HR, and 66.5% ± 4.0% for ER. Based on NCI risk classification, 4yr-EFS rates were 88.2% in NCI-SR and 76.4% in NCI-HR patients, respectively. Compared to previous trial ALL-97, 4yr-EFS of NCI-SR patients was significantly improved (88.2% vs 81.2%, log rank p = 0.0004). The 4-year cumulative incidence of isolated (0.9%) and total (1.5%) CNS relapse were significantly lower than those reported previously. In conclusion, improved EFS in NCI-SR patients and abolish of PCRT was achieved in ALL-02

Seismic exploration at Fuji volcano with active sources : The outline of the experiment and the arrival time data

Fuji volcano (altitude 3,776m) is the largest basaltic stratovolcano in Japan. In late August and early September 2003, seismic exploration was conducted around Fuji volcano by the detonation of 500 kg charges of dynamite to investigate the seismic structure of that area. Seismographs with an eigenfrequency of 2 Hz were used for observation, positioned along a WSW-ENE line passing through the summit of the mountain. A total of 469 seismic stations were installed at intervals of 250-500 m. The data were stored in memory on-site using data loggers. The sampling interval was 4 ms. Charges were detonated at 5 points, one at each end of the observation line and 3 along its length. The first arrival times and the later-phase arrival times at each station for each detonation were recorded as data. P-wave velocities in the surface layer were estimated from the travel time curves near the explosion points, with results of 2.5 km/s obtained for the vicinity of Fuji volcano and 4.0 km5/s elsewhere

Influences of OX Substance of DNA Content and Mitotic Phase of Subcutaneously-Transplanted Yoshida Sarcoma Cells

After transplanting Yoshida sarcoma cells under the skin of the thigh of hybrid mice, the author injected 0.2cc of 2% unsaturated fatty acid fraction (denominated as OX substance) intramuscularly and observed the changes in the histological picture, in the mitotic phase as well as the changes in the quantity of DNA per cell, along with the lapse of time, and obtained the following results. 1. The histological pictures revealed the phenomena such as an increase in necrotic foci, a general diminution in stainability and indistinct cell boundary. 2. In counting the number of those cells with a relatively strong activity in cancer foci at various mitotic phases, it has been found that from 6 to 12 hours after the OX injection the number of the cells in metaphase is decreased and from 24 hours on the number of such cells approaches the normal. 3. In the estimation of DNA content per cell, from 6 to 12 hours after the OX injection the number of the cells undergoing a relatively active proliferation but with a decreased DNA content tends to increase but after 24 hours the content per cell approaches the normal level

Influences of Unsaturated Fatty Acid Fraction (OX) extracted from the Liver of X-Irradiated Rabbit on the Activity of Succinic dehydrogenase in Subcutaneously-Transplanted Yoshida Sarcoma Cells

In order to study influences of OX on the activity of succinic dehydrogenase in Yoshida sarcoma cells transplanted intramusculrally in the albino-rat thigh, the author injected OX intra-tumorally or intravenously into tumor bearing rats and carried out biochemical and histochemical investigations. The results are as follows: 1. In the cases given direct, intratumoral injection of OX, the activity of succinic dehydrogenase in Yoshida sarcoma cells thus transplanted is decreased, and it recovers very slowly but the same activity in muscle tissues recovers more rapidly. 2. In the histochemical observations when OX is injected intratumorally, central necrosis is increased and also a marked enlargement of bionecrotic foci occurs, but in the outer-most layer colonies of proliferative cells can be recognized. 3. When OX is injected intravenously into tumor bearing rats, the activity of the dephydrogenase is rather increased in tumor tissue, and the part where such increase occurred ultimately tends to become necrotic. In addition, the author discussed briefly about the relation between these changes in the activity of dehydrogenase and OX

Candidiasis attributable to gastric ulcer

Candida症は真菌の一種のカンジダ属,特にCandida albicansによって起される疾病であり,本来は正常な皮膚,粘膜,糞便,喀痰,尿などに常在して人体に害を及ぼさない.近年各種の抗生物質,ステロイド製剤の開発に伴って,適応疾患に此等が容易に投与されており,此等薬剤の使用による副作用として色々な現象が現われて来ているが,そのうちの重要なる疾患の一つにCandida症が挙げられる.此のCandida症は上記薬剤の投与に依るのみならず,他疾患に基づく抵抗性の低下した患者においても認められることは周知の如くであり,例えば,白血病,再生不良性貧血,糖尿病等の患者,化学療法を受けた悪性腫瘍患者にも好発し易い.此等の場合多くは食道Candida症として見られることが多いが,今回我々の遭遇した患者は上記薬剤の投与もなく,心窩部痛を主訴として来院したものであり,食道,胃等の上部消化管X線検査によって,胃体中部小彎側に潰瘍像が認められ,潰瘍周辺部の粘膜像も不整を示しており一応悪性化が考えられた症例である.症例.患者は47才,主婦.主訴:約2週間前よりの心窩部痛.家族歴:特記すべきものなし.既往歴:生来健康であり薬剤常用等の経験はない.現病歴約2週間前より心窩部痛を来たし,その疼痛は心窩部をつまみ挙げる様であり特に空腹時に強く感じられ,時には夜中にも疼痛を来たすことがあった. 臨床検査 RBC,508×10(4),WBC,9200.分画像に異常なし.Hgb.16.0g/dl,MCV 98.0,GOT 26u,GPT 16u.尿一般検査では特に著変を認めない. 上部消化管X線検査 食道造影検査にては造影剤の通過は正常で狭窄等の異常所見なく,又粘膜レリーフ像にも著変は認められなかった.(Fig 1. A,B)胃造影検査では充満像では胃角部の短縮及び胃角上部小彎の不整が認められた.(Fig 2. C)圧迫撮影では小彎側中央部よりや,上方に潰瘍ニッシエがあり(Fig 2. D)潰瘍周辺は不整にして,通常みられる良性胃潰瘍よりもwallの巾が広く,又粘膜像においても潰瘍周辺部の顆粒状隆起,レリーフの不整が見られ,良性潰瘍像と少し異ったレ線像を呈しているので潰瘍癌の疑を持ち胃生検を行なうことにした. 胃内視鏡所見 胃体中部小彎側に大きな潰瘍による陥凹部を認め,その辺縁は平滑であったが,潰瘍部の周辺は隆起し潰瘍表面は不整で出血を認めた.そこで潰瘍部のうち3ヶ所をえらんで組織生検を行った. 生検組織所見 岡山大学医学部病理学教室に依頼した病理診断所見によれば,「Gastric ulcer with candidiasis and repairing mucosa, no malignancy｣ であり,間質にはround cell infiltrationがある. bleedingを伴っており,ulcer floorにはfungusが増殖している.再生上皮,異型性は余りない. (Fig.4, E.F.G.H) 以上の結果によりCandidaが増殖している場合には,組織学的に悪性度は認め難い場合でもcancerを完全に否定し得ないこともあり手術に踏切った. 摘出標本組織診断 「Gastric ulcer (Ul-Ⅳ) and chronic active gastritis, no malignancy.」ulcer floorはnecrotic massとgranulationが著明で此のgranulation changeはadipose tissueに及んでいる(Ul-Ⅳ).mucosaは比較的異型性は軽度でmalignancyの所見は認められず,間質はround cellのnodular infiltrationが著明に見られた.以上の如く生検並に手術摘出標本の組織所見によって胃レ線所見において悪性像の如く考えられたのは胃潰瘍に併存したCandidiasisの為によって,斯くの如きレ線像を呈したものと思われる.術后経過における種々の臨床検査成績に著変なく患者は順調である.Candidiasis induced by antibiotics or steroid substances has often been reported. However, we found candidiasis in woman of 47 years which followed gastric ulcer without administration of such substances. This is extremely rare in Japan