[Spontaneous neoplasms in Syrian hamsters from the Stolbovaia Breeding Nursery of the Academy of Medical Sciences of the USSR].
Explore the source record for details and available documents.
Biomedical subjects
Publications and source records attributed to S A Khrustalev.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
The authors present an analysis of the data of foreign literature and the results of their personal studies of spontaneous neoplasms in 40 guinea pigs of national breeding observed during observed during a 5-year period. In 4 of them malignant tumors were diagnosed-lympholeucosis (2 cases), dermoid ovarian cysts and also cancer and adenoma of the adrenal cortex (in one animal). The neoplasms described developed in guinea pigs, aged over 4 years, and they are referred to as mostly common tumors in this species of animals.
Mongrel guinea pigs were given 3-indolilacrilacid and 2-aminoacetophenon derivates of tryptophan which blastomogenic action was previously revealed in experiments on inbred mice. Both substances produced tumors in animals of the experimental groups earlier than in the control group, this fact showing both the preparations to have blastomogenic effect. The results of the investigation show the possibility of using guinea pigs for studying the blastomogenic action of weak cancerogenic agents to which the endogenic blastomogenic substances belong.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
The carcinogenic activity of the enterosorbent optisorb (pure zeolite) and the biologically active food additive litovite [zeolite and rye brans (1:1)] based on zeolite-clinoptololite from the Kholinsk deposit was studied. The intrapleural three-fold administration of optisorb (20 mg x 3) to rats and the inclusion of optisorb (5% of the feed) and litovite (5 and 0.06%) into the feed showed that these agents had no carcinogenic activity.
The new drug thymodepressin was subcutaneously injected in doses 0.0145 and 0.145 mg/kg in rats and mice over a period of 104 weeks. No statistically significant difference in the tumor frequencies between the test and control groups was observed during this period of time. It is concluded that thymodepressin is not carcinogenic.
Explore the source record for details and available documents.
Vaccinia virus was shown to exert a stimulating effect on the emergence of spontaneous neoplasia and Rauscher virus-induced hemoblastoses in BALB/cJLacSto mice. The mechanism of the stimulating effect is discussed.
Explore the source record for details and available documents.