Biomaterial Database

Investigation of hyperthermia-induced dominant lethal mutations in male mice. 1981

M L Garriott, and C L Chrisman

The mutagenic potential of hyperthermia was investigated in a random-bred stock of mice to determine if this is one mechanism by which elevated ambient temperature exerts its deleterious effects on mammalian reproduction. Two dominant lethal assays were conducted to measure mutagenicity during the meiotic and post-meiotic stages of spermatogenesis following various periods of heat stress. Indirect evidence for hyperthermia-induced dominant lethality was obtained in the form of increases in the frequencies of preimplantation loss and sterile matings. However, the large number of sterile matings precluded unambiguous statistical analysis of the incidence of early embryonic mortality that would have provided direct evidence of induced dominant lethality. Control data indicated that the stock of mice used in this experiment is an excellent choice for dominant lethal studies because of the large number of implants and the low frequency of embryonic mortality.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D009152	Mutagenicity Tests	Tests of chemical substances and physical agents for mutagenic potential. They include microbial, insect, mammalian cell, and whole animal tests.	Genetic Toxicity Tests,Genotoxicity Tests,Mutagen Screening,Tests, Genetic Toxicity,Toxicity Tests, Genetic,Genetic Toxicity Test,Genotoxicity Test,Mutagen Screenings,Mutagenicity Test,Screening, Mutagen,Screenings, Mutagen,Test, Genotoxicity,Tests, Genotoxicity,Toxicity Test, Genetic
D005799	Genes, Dominant	Genes that influence the PHENOTYPE both in the homozygous and the heterozygous state.	Conditions, Dominant Genetic,Dominant Genetic Conditions,Genetic Conditions, Dominant,Condition, Dominant Genetic,Dominant Gene,Dominant Genes,Dominant Genetic Condition,Gene, Dominant,Genetic Condition, Dominant
D005804	Genes, Lethal	Genes whose loss of function or gain of function MUTATION leads to the death of the carrier prior to maturity. They may be essential genes (GENES, ESSENTIAL) required for viability, or genes which cause a block of function of an essential gene at a time when the essential gene function is required for viability.	Alleles, Lethal,Allele, Lethal,Gene, Lethal,Lethal Allele,Lethal Alleles,Lethal Gene,Lethal Genes
D006358	Hot Temperature	Presence of warmth or heat or a temperature notably higher than an accustomed norm.	Heat,Hot Temperatures,Temperature, Hot,Temperatures, Hot
D000704	Analysis of Variance	A statistical technique that isolates and assesses the contributions of categorical independent variables to variation in the mean of a continuous dependent variable.	ANOVA,Analysis, Variance,Variance Analysis,Analyses, Variance,Variance Analyses
D000818	Animals	Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.	Animal,Metazoa,Animalia
D013997	Time Factors	Elements of limited time intervals, contributing to particular results or situations.	Time Series,Factor, Time,Time Factor
D051379	Mice	The common name for the genus Mus.	Mice, House,Mus,Mus musculus,Mice, Laboratory,Mouse,Mouse, House,Mouse, Laboratory,Mouse, Swiss,Mus domesticus,Mus musculus domesticus,Swiss Mice,House Mice,House Mouse,Laboratory Mice,Laboratory Mouse,Mice, Swiss,Swiss Mouse,domesticus, Mus musculus