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Sexually dimorphic duct system of the submandibular gland in mouse with testicular feminization mutation (Tfm/Y). 1992

K Sawada, and T Noumura
Department of Regulation Biology, Faculty of Science, Saitama University, Urawa, Japan.

The X-linked testicular feminization mutation (Tfm/Y) in the mouse is characterized by androgen insensitivity of the target cells. The aim of this study was to examine sexually dimorphic development of the submandibular gland of Tfm/Y mutant mice in comparison with those of wild-type male, wild-type female and heterozygous Tfm female mice. In either 30- or 90-day-old wild-type male mice, the granular convoluted tubules (GCT) of the glands were more developed, and the relative occupied areas (ROA) of GCT were superior to those of the age-matched wild-type and heterozygous Tfm females. In androgen-insensitive Tfm/Y mice, the glandular structures rather resembled the female glands, showing lower values of the ROA of the GCT. Sex differences in the mitotic rate were observed at 30 days of age, being significantly higher in the wild-type male GCT than in the female GCT. Thereafter, the mitotic rate of the wild-type male GCT declined to the female levels by 90 days of age. The mitotic rate of GCT in Tfm/Y mutants was as low as those of the females during observation periods. An other three regions, the acini, the intercalated ducts and the excretory striated ducts, were not significantly different in either the ROA or the mitotic rate among wild-type males and females, and Tfm/Y. On the other hand, either the ROA or the mitotic activity of GCT of the glands in Tfm/Y mutants was completely unaffected by 5 alpha-dihydrotestosterone (DHT).(ABSTRACT TRUNCATED AT 250 WORDS)

UI MeSH Term Description Entries
D008297 Male Males
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D009929 Organ Size The measurement of an organ in volume, mass, or heaviness. Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D005260 Female Females
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
D012727 Sex Characteristics Those characteristics that distinguish one SEX from the other. The primary sex characteristics are the OVARIES and TESTES and their related hormones. Secondary sex characteristics are those which are masculine or feminine but not directly related to reproduction. Gender Characteristics,Gender Differences,Gender Dimorphism,Sex Differences,Sex Dimorphism,Sexual Dichromatism,Sexual Dimorphism,Characteristic, Gender,Characteristic, Sex,Dichromatism, Sexual,Dichromatisms, Sexual,Difference, Sex,Dimorphism, Gender,Dimorphism, Sex,Dimorphism, Sexual,Gender Characteristic,Gender Difference,Gender Dimorphisms,Sex Characteristic,Sex Difference,Sex Dimorphisms,Sexual Dichromatisms,Sexual Dimorphisms
D013196 Dihydrotestosterone A potent androgenic metabolite of TESTOSTERONE. It is produced by the action of the enzyme 3-OXO-5-ALPHA-STEROID 4-DEHYDROGENASE. 5 alpha-Dihydrotestosterone,Androstanolone,Stanolone,17 beta-Hydroxy-5 beta-Androstan-3-One,17beta-Hydroxy-5alpha-Androstan-3-One,5 beta-Dihydrotestosterone,5-alpha Dihydrotestosterone,5-alpha-DHT,Anaprotin,Andractim,Dihydroepitestosterone,Gelovit,17 beta Hydroxy 5 beta Androstan 3 One,17beta Hydroxy 5alpha Androstan 3 One,5 alpha DHT,5 alpha Dihydrotestosterone,5 beta Dihydrotestosterone,Dihydrotestosterone, 5-alpha,beta-Hydroxy-5 beta-Androstan-3-One, 17
D013363 Submandibular Gland One of two salivary glands in the neck, located in the space bound by the two bellies of the digastric muscle and the angle of the mandible. It discharges through the submandibular duct. The secretory units are predominantly serous although a few mucous alveoli, some with serous demilunes, occur. (Stedman, 25th ed) Submaxillary Gland,Gland, Submandibular,Gland, Submaxillary,Glands, Submandibular,Glands, Submaxillary,Submandibular Glands,Submaxillary Glands
D013734 Androgen-Insensitivity Syndrome A disorder of sexual development transmitted as an X-linked recessive trait. These patients have a karyotype of 46,XY with end-organ resistance to androgen due to mutations in the androgen receptor (RECEPTORS, ANDROGEN) gene. Severity of the defect in receptor quantity or quality correlates with their phenotypes. In these genetic males, the phenotypic spectrum ranges from those with normal female external genitalia, through those with genital ambiguity as in Reifenstein Syndrome, to that of a normal male with INFERTILITY. Testicular Feminization,AR Deficiency,Androgen Insensitivity Syndrome,Androgen Insensitivity, Partial,Androgen Receptor Deficiency,Androgen Resistance Syndrome,Androgen-Insensitivity Syndrome, Complete,Androgen-Insensitivity Syndrome, Partial,DHTR Deficiency,Dihydrotestosterone Receptor Deficiency,Male Pseudohermaphroditism Due to Androgen Insensitivity,Reifenstein Syndrome,Reifenstein's Syndrome,Testicular Feminization Syndrome,AR Deficiencies,Androgen Insensitivities, Partial,Androgen Insensitivity Syndrome, Complete,Androgen Insensitivity Syndrome, Partial,Androgen Insensitivity Syndromes,Androgen Receptor Deficiencies,Androgen Resistance Syndromes,Androgen-Insensitivity Syndromes,Androgen-Insensitivity Syndromes, Complete,Androgen-Insensitivity Syndromes, Partial,Complete Androgen-Insensitivity Syndrome,Complete Androgen-Insensitivity Syndromes,DHTR Deficiencies,Deficiencies, AR,Deficiencies, Androgen Receptor,Deficiencies, DHTR,Deficiencies, Dihydrotestosterone Receptor,Deficiency, AR,Deficiency, Androgen Receptor,Deficiency, DHTR,Deficiency, Dihydrotestosterone Receptor,Dihydrotestosterone Receptor Deficiencies,Feminization Syndrome, Testicular,Feminization Syndromes, Testicular,Feminization, Testicular,Feminizations, Testicular,Insensitivities, Partial Androgen,Insensitivity Syndrome, Androgen,Insensitivity Syndromes, Androgen,Insensitivity, Partial Androgen,Partial Androgen Insensitivities,Partial Androgen Insensitivity,Partial Androgen-Insensitivity Syndrome,Partial Androgen-Insensitivity Syndromes,Receptor Deficiencies, Androgen,Receptor Deficiencies, Dihydrotestosterone,Receptor Deficiency, Androgen,Receptor Deficiency, Dihydrotestosterone,Reifensteins Syndrome,Resistance Syndrome, Androgen,Resistance Syndromes, Androgen,Testicular Feminization Syndromes,Testicular Feminizations
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

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