phenylhydrazine/悪性腫瘍

N'-Acetyl-4-(hydroxymethyl)phenylhydrazine was administered as a 0.0625% solution in drinking water continuously for the life span of Swiss mice, from 6 weeks of age. Compared to that in untreated controls, in treated animals the lung tumor incidence rose from 15 to 34% in females and 22 to 48% in

We have examined the anatomical-functional sites within mouse liver where phenylhydrazine (PHZ)-induced hematopoietic foci, and M5076 reticulum cell sarcoma, B16F10 melanoma and Lewis lung-carcinoma cells specifically develop as colonies after intrasplenic injection. Cancer foci occurred

Separate solutions of 0.015% benzylhydrazine dihydrochloride and 0.01% phenylhydrazine hydrochloride were given continuously in the drinking water of 6- and 5-week-old randomly bred Swiss mice for the remainder of their life. The consumption of benzylhydrazine dihydrochloride significantly increased

The thymidine kinases extracted from the spleen of mice infected with Friend virus and from Yoshida sarcoma in rats were separated into two active peaks by diethylaminoethyl cellulose column chromatography, while those of normal tissues have been found to consist of only the first peak (P-1). The

While the potential importance of hypoxia in limiting the sensitivity of tumor cells to ionizing radiation has long been appreciated, methods for accurately quantifying the number of radiation-resistant hypoxic cells within tumors have been lacking. We have used the pentafluorinated derivative

Tumor response to radiation is dependent not only on the quantity of hemoglobin (Hb) available for oxygen (O2) transport but also on the position of the Hb-O2 dissociation curve (Hb affinity). Previous studies have shown that administering agents which shift the Hb-O2 dissociation curve to the right

BACKGROUND High regenerative and proliferative capacity of blood and its components renders it to be at higher risk of adverse drug reactions (ADRs) which are manifested in several treatment regimens against various ailments such as cancers, viral diseases, and several metabolic

Phenylhydrazine (PHZ) oxidation resulting in free iron release followed by free radical generation has increased frequency of cancer. This study aims towards the dose-dependent response of PHZ and the role of melatonin in comparison with vitamin E following PHZ-induced toxicity within the lymphoid

Carbidopa is used with l-DOPA (l-3,4-dihydroxyphenylalanine) to treat Parkinson's disease (PD). PD patients exhibit lower incidence of most cancers including pancreatic cancer, but with the notable exception of melanoma. The decreased cancer incidence is not due to l-DOPA; however, the relevance of

A series of 1-(N-substituted-1H-indol-3-yl)-3-arylprop-2-ene-1-ones (2a, b-4a, b) were prepared and allowed to react with urea, thiourea or guanidine to give pyrimidine derivatives 5a, b-13a, b. Reaction of 2a, b-4a, b with ethyl acetoacetate in the presence of a base gave cyclohexanone derivatives

BACKGROUND Mushrooms of the genus Agaricus are a common folk remedy against carcinoma. The active ingredients, polysaccharides and protein-polysaccharide complexes containing beta-glucan, have been isolated and shown to have indirect tumor-suppressing activity via an immunological

A facile, convenient and high yielding synthesis of novel thioglycosides incorporating 1,3,4-oxadiazole, triazole and or triazine moieties from readily available starting materials has been described. The key step of this protocol is the formation of 3-isobutyl-1-phenyl-1H-pyrazole-4-carbaldehyde

Woodchucks have been a preferred lab animal model of chronic hepatitis B viral infection. The model recapitulates the disease progression of HBV infection to hepatocellular carcinoma (HCC) and has documented similarities in protein glycosylation with human HCC. This study examined N-glycans in serum

Specific antibodies to human glycophorin A and spectrin were used to study the expression of these membrane proteins in normal and pathologic human bone marrow. In immunofluorescence experiments spectrin and glycophorin A are found in 50-60% of the nucleated cells in normal bone marrow. These two

1. We have recently found that in the presence, but not in the absence, of foetal calf serum, spermine inhibits the production of nitric oxide (NO) in cultured J774.2 macrophages stimulated with bacterial endotoxin (lipopolysaccharide; LPS) or with gamma-interferon (IFN), showing that polyamines may