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Horm Res Paediatr 26 August ; 93 2 : 76— Minipuberty describes the transient sex-specific activation of the hypothalamic-pituitary-gonadal HPG axis during the first 6 months of life in boys and during the first 2 years in girls. It leads to a rise of luteinizing hormone, follicle-stimulating hormone, estradiol, and testosterone. Current thinking suggests that it is an essential imprinting period for different body functions.
Firstly, minipuberty plays an important role in genital organ development; testosterone influences penile growth, the number of Sertoli cells, and spermatogenesis. Thirdly, it affects cognitive functions; testosterone has an impact on language organization in the infant brain and estradiol affects laryngeal sound production and baby babbling. There are inconsistent findings concerning the impact of minipuberty on sex-specific playing behavior.
Minipuberty is an interesting field of research, and further studies in this area will teach us more about this exciting period of human development. This maturation is induced by an activation of the hypothalamic-pituitary-gonadal HPG axis which causes a gender-specific elevation in the gonadotropic hormones luteinizing hormone [LH] and follicle-stimulating hormone [FSH] and sex steroid hormones testosterone in males and estradiol in females.
Classical canonical puberty occurs in adolescence, but the HPG axis is activated prior to this, once in utero and once in the first months of life. The first 2 activations of the HPG axis neither induce physical pubertal changes no change in Tanner stage nor result in the capacity for reproduction. We examine which changes are induced by minipuberty and its functions. The 3 endocrine puberties during human development according to Hesse [ 1 ]. Studies targeting minipuberty are based on hormone measurements in different matrices the blood, saliva, and urine and at different time points.