Abstract In bovine females, the production of embryos derived from oocytes obtained by ovum pick-up (OPU) is becoming a frequent procedure. Collection pre-pubertal animals enables shortening genetic distance, especially in high-value animals. Nevertheless, oocyte and later embryo developmental potential differ between prepubertal adult heifers. The aim this study was to determine possible under...

Epidemiological data in childhood psoriasis are accumulating. However, reliable information captured at onset is lacking. In a cross sectional study we recruited 109 children < 16 years within 12 months of psoriasis onset and explored the clinical characteristics. Pre-pubertal children, especially boys, more often had inverse involvement (OR = 2.8, 95% CI = 1.1, 7.1, p ≤ 0.05). HLA-C*06 was pos...

There is a lack of data on metabolic risk factors during pre-puberty, which is important for identifying the subgroups of youth, at whom early interventions should be targeted. In this study, we evaluated the prevalence of metabolic risk factors and its subsequent relations with dietary patterns in Korean pre-pubertal children through a cross-sectional sample (n = 1,008; boys = 513) of pre-pube...

Between 1986 and 1995, a pedigree of six Arabs with male pseudohermaphroditism due to 5 alpha reductase-2 deficiency have been identified. All, were raised as girls since birth. At the time of diagnosis, three were post-pubertal, one pubertal and two pre-pubertal. The external genitalia of 'pseudo-vaginal perineoscrotal hypospadias' was identical in these subjects. Although these individuals we...

The study evaluated the interactions of puberty and obesity on substrate oxidation of overweight girls (n = 38) and boys (N = 35; BMI > 85th percentile) matched for gender, age, and puberty (pre/pubertal) with normal weight girls and boys. Metabolic rates (VO(2)) were obtained during rest and at 4, 5.6 and 8 k/h. Carbohydrate oxidation rates (mg/kgFFM/min) adjusted for % predicted VO(2max), wer...

Adult listeners are capable of identifying the gender of speakers as young as 4 years old from their voice. In the absence of a clear anatomical dimorphism in the dimensions of pre-pubertal boys' and girls' vocal apparatus, the observed gender differences may reflect children's regulation of their vocal behaviour. A detailed acoustic analysis was conducted of the utterances of 34 6- to 9-year-o...

Chemically, soy contains a group of phytoestrogens called isoflavones, predominantly genistein and daidzein. The aim of the present study was to determine the effects of post weaning consumption of dietary soy isoflavones on prepubertal and postpubertal serum levels of some reproductive hormones of male Wistar rats. The study involved investigating the effects of different doses of isoflavones ...

The morphology of canine cumulus-oocyte complexes (COCs) before puberty is still unknown. Therefore, the aim of our study was to elucidate the morphological characteristics of pre-pubertal oocytes and cumulus cells by light microscopy, scanning electron microscopy and transmission electron microscopy. The pre-pubertal oocyte was characterized by accumulation of lipid yolk droplets in the cytopl...