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Inhibition By Vitamin A of Cyst Formation In Nyctotheroides Puytoraci Induced By Injecting Its Host Bufo Regularis With 20‐Methylcholanthrene
Author(s) -
SADEK ISMAIL A.
Publication year - 1980
Publication title -
the journal of protozoology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.067
H-Index - 77
eISSN - 1550-7408
pISSN - 0022-3921
DOI - 10.1111/j.1550-7408.1980.tb04264.x
Subject(s) - methylcholanthrene , vitamin , hydrocarbon , biology , host (biology) , chemistry , biochemistry , carcinogen , ecology , organic chemistry
SYNOPSIS. 20‐Methylcholanthrene induced cyst formation in Nyctotheroides puytoraci when injected into its host Bufo regularis. Presumably this hydrocarbon or its metabolites reaches the parasites in the recta of treated host animals and induces encystment. However, injection of B. regularis with 0.5 mg of 20‐methylcholanthrene + vitamin A palmitate (5,000 IU) inhibited the hydrocarbon‐induced encystment of the parasites.