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Biomedical subjects

M Sagara

Publications and source records attributed to M Sagara.

At least 73 records · Page 4Linked to original sources

[Toxic activities of the Ga-Sn alloy (Adlloy-OH) on nutritional condition and dental caries development in rats].

The toxic activities of Ga-Sn alloy (Adlloy-OH) in experimental rats, its relations to the nutritional condition and dental caries development, were studied for three months. Adlloy, 0.3 g or 3 g per body weight (kg), was fed orally with the basal diet consisting of casein, sucrose, bean oil, mineral, and vitamin mixtures. Biochemical assays of serum was carried out for total protein, albumin, calcium, inorganic phosphate, glucose, urea, creatine, alkaline phosphatase, GOT, and GPT. There was no convincing evidence of toxic effects on growth and biochemical data by the oral feeding of Addloy-OH.

Animals↗

[Clinical study of carumonam].

To evaluate the clinical efficacy of carumonam (CRMN, AMA-1080), the drug was used in the treatment of 10 patients including 4 with pneumonia and each with acute tonsillitis, chronic bronchitis, Mycoplasma pneumonia, primary atypical pneumonia (PAP), chronic pyelitis, and acute cystitis. Since beta-lactam antibiotics were not active against Mycoplasma pneumonia and PAP, these diseases were excluded from the clinical efficacy evaluation of CRMN. Responses were excellent in 1 patient and good in 7. Side effects were not observed. The laboratory test recognized slight elevations of GOT, GPT and eosinophilia in 1 patient and a slight leucopenia in another upon the administration of CRMN.

Adult↗

[Study of abscopal effect and cellular infiltration of tumor nests using less-fractionated, large-dose radiation].

As reported by several authors, abscopal effect and favorable cellular infiltrations into the tumor nest caused by irradiation suggest the existence of cell immunity in the host. In our present study, as first step to elucidate the mechanism of the fact mentioned above, effects of radiation with a single dose irradiation was estimated in terms of the increase of survival rate and the inhibition of pulmonary metastasis, i.e. abscopal effect in the mice of irradiated tumor burden. Therefore, we examined the resected and pulmonary specimen after irradiation histopathologically. We also examined the effects of the administration of immune modulator PSK and OK-432. Results; 1) Increase of survival rate and inhibition of pulmonary metastasis were observed in groups of mice with inoculated tumor and with again inoculated tumor treated by a single dose irradiation, compared to either the control groups. 2) Also administration of immune potentiator with radiation enhanced the survival rate and inhibition of pulmonary metastasis in all experimental protocols. 3) Remarkable cellular infiltrations of tumor nest after irradiation were observed, and these cellular infiltrations suggest participation of immunoreaction. In the group of using immune modulator, the cellular infiltrations were observed more remarkable than the other groups. 4) Optimal radiation dose was proved to be 30 Gy in this study.

Animals↗

Increased oxidative DNA damage in stroke-prone spontaneously hypertensive rats.

1. The amount of urinary 8-hydroxy-2'-deoxyguanosine (8-OHdG), a biomarker of the total systemic oxidative stress in vivo, in stroke-prone spontaneously hypertensive rats (SHRSP) was not different from that in control normotensive Wistar-Kyoto (WKY) rats at 6 weeks of age, but became higher than control values after the development of severe hypertension at 14-17 weeks of age. 2. The amount of urinary 8-OHdG was not significantly different between SHRSP treated with anti-hypertensive agents and those not treated at 14 weeks of age. 3. Stroke-prone spontaneously hypertensive rats were exposed to DNA damage by oxidative stress at the early stage when they developed severe hypertension, but this increase in DNA damage was not the secondary effect of hypertension.

8-Hydroxy-2'-Deoxyguanosine↗