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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Tg(Gnrh1-Fgfr1)1Tsai
transgene insertion 1, Pei-San Tsai
MGI:3588566
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
tg1
Tg(Gnrh1-Fgfr1)1Tsai/Tg(Gnrh1-Fgfr1)1Tsai involves: C57BL/6J * DBA/2J MGI:3588568


Genotype
MGI:3588568
tg1
Allelic
Composition
Tg(Gnrh1-Fgfr1)1Tsai/Tg(Gnrh1-Fgfr1)1Tsai
Genetic
Background
involves: C57BL/6J * DBA/2J
Find Mice Using the International Mouse Strain Resource (IMSR)
No mouse lines available in IMSR.
See publication links below for author information.
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• the average age of reproductive senescence is younger in transgenic female mice than in controls
• however, general fertility and duration of the estrous cycle is unaffected in adult transgenic females

nervous system
• both female and male mice exhibit reduced numbers; however, the males exhibit a greater reduction
• the difference is visible at the level of the organum vasculosum of the lamina terminalis
• the tissue distribution pattern of the remaining cells is similar to controls
• gonadotropin-releasing hormone neuronal fiber density in the median eminence (the hormone release site) was slightly reduced
• immunohistochemical analysis shows significantly reduced numbers of gonadotropin-releasing hormone neurons are present in the adult forebrai
• reduced gonadotropin-releasing hormone concentration in the hypothalamus is shown in females
• significantly reduced gonadotropin-releasing hormone concentration in the hypothalamus is shown in males

reproductive system
• reduced gonadosomatic index (testis weight/body weight) is shown
• the average age of reproductive senescence is younger in transgenic female mice than in controls
• however, general fertility and duration of the estrous cycle is unaffected in adult transgenic females
• delayed puberty is indicated at 30 days of age by a failure of vaginal opening in transgenic females compared to controls
• the size of the first litter is smaller than controls, but subseqent litters have similar numbers to controls

endocrine/exocrine glands
• reduced gonadosomatic index (testis weight/body weight) is shown

homeostasis/metabolism
N
• serum lutenizing hormone levels are not different from controls





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last database update
04/30/2024
MGI 6.23
The Jackson Laboratory