Prepuberty
Mostrando 1-10 de 10 artigos, teses e dissertações.
-
1. Development of Adrenal Glands from the Embryonic Phase to Puberty in Spix’s Yellow-toothed Cavies (Galea spixii, Wagler, 1831)
ABSTRACT Several authors have underscored the importance of establishing parameters in morphological development by gender comparison to establish clinical and pre-clinical assays through the use of experimental models. Current research compares the morphometry of right and left adrenal glands of males and females and describes differentiation of the cortex
Braz. arch. biol. technol.. Publicado em: 10/12/2018
-
2. Morfofisiologia do sistema genital masculino de ratos púberes e adultos após privação androgênica durante a pré-puberdade / Morphophysiology of male reproductive system of adult and pubertal rats after androgen deprivation during prepuberty
Endocrine disrupters are chemicals that can act as agonists or antagonists of endogenous hormones, interfering with the homeostasis of the organism. Since the endocrine system plays a critical role in the development and function of the male reproductive system, this is an especially vulnerable target of potential endocrine perturbations. The literature pres
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/02/2012
-
3. INDUÇÃO DA OVULAÇÃO EM NOVILHAS COM PGF2α / INDUCTION OF OVULATION IN HEIFERS WITH PGF2α
Neste estudo avaliou-se o efeito de 500μg de cloprostenol sódico (PGF2α, Ciosin) associado ou não ao tratamento prévio com um dispositivo intravaginal liberador de progesterona (P4, CIDR) sobre a taxa de ovulação de novilhas pré-púberes. Quarenta novilhas da raça Red Angus, com média de 250 kg de peso-vivo foram distribuídas aleatoriament
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/09/2011
-
4. Restrição protéica in utero : desenvolvimento sexual e histofisiologia do sistema reprodutivo de ratos machos / In utero protein restrition : sexual development and histophysiology of the rat male reproductive tract
In the past few years the worldwide recognition of the relevance of nutrition as a basis for social and economic development has been growing. In developing countries such as Brazil undernutrition is a socioeconomic problem caused by poor nutrition and low income. The birth of children with low birth weight is considered an important public health problem, w
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
-
5. Relationship between the maternal diabetes and the sexual development of the male rat offspring / Relação entre o diabete materno e o desenvolvimento sexual da prole masculina de ratos
Diabetes melllitus is a group of metabolic disorders of multiple etiology, characterized by defects in the secretion and/or action of insulin. The causes of the disease can be genetic and/or environmental. Diabetes is one of the most common metabolic complications during pregnancy and is associated with an increased risk of maternal and neonatal morbidities.
Publicado em: 2007
-
6. Desenvolvimento reprodutivo de ratos machos expostos ao fenvalerato in utero e lactação / Reproductive development of male rats exposed to fenvalerate in utero and lactation
Fenvalerate is a synthetic pyrethroid insecticide used in agriculture, cattle raising and in the control of domestic insects, and its reproductive effects are little-known.Some studies already have proposed that fenvalerate is an endocrine disruptor, acting as an environmentalestrogen. Studies done with rats exposed to some pyrethroids showed reduction of sp
Publicado em: 2005
-
7. Emprego de diferentes doses de LH suíno na indução e sincronização da puberdade em marrãs / Use of different doses of Swine LH in puberty induction and synchronization in gilts
The research carried out at the Swine Research Laboratory, of FMVZ - USP, Campus of Pirassununga, studied the effects of the use of different hormonal doses on the induction and synchronization of puberty in gilts. Sixty-seven Camborough 22 Agroceres PIC® females with 140 days of age and 86kg of body weight were submitted to the following treatments: contro
Publicado em: 2003
-
8. The differing tempo of growth in bone size, mass, and density in girls is region-specific
The differing tempo and direction of growth of the periosteal and endocortical surfaces, and the differing tempo of growth of the axial and appendicular skeleton, may predispose to regional deficits in bone size, bone mineral content (BMC), and volumetric bone mineral density (vBMD). These traits were measured during 2 years by dual x-ray absorptiometry in 1
American Society for Clinical Investigation.
-
9. Bone Structure at the Distal Radius During Adolescent Growth
The incidence of distal forearm fractures peaks during the adolescent growth spurt, but the structural basis for this is unclear. Thus, we studied healthy 6- to 21-yr-old girls (n = 66) and boys (n = 61) using high-resolution pQCT (voxel size, 82 μm) at the distal radius. Subjects were classified into five groups by bone-age: group I (prepuberty, 6–8 yr),
Amer Soc Bone & Mineral Res..
-
10. Physiological mechanisms adopted by chondrocytes in regulating longitudinal bone growth in rats.
1. Chondrocyte activities within growth plate cartilage are the principal determinants of longitudinal bone growth, and it was the aim of this investigation to assess how these cell activities are modulated under various growth rate conditions. Using proximal tibial growth plates from rats of different ages, growth rate was determined by fluorochrome labelli