Women had to be over 70 years of age, non-institutionalized, functionally independent and free from diseases or medications known to affect the musculo-skeletal system or the somatotrophic axis.
In fact, there was no evidence for a relation of vitamin D status or the somatotrophic axis to muscle strength in ageing women, despite markedly declining concentrations of circulating IGF-I and free 1,25[(OH).sub.2][D.sub.3].
The authors of this meta-analysis also indicated that a great variety of cognitive tests were used and the somatotrophic
axis may influence some cognitive processes but not all.
The recent studies have been indicated that the single nucleotide polymorphisms (SNPs) in relation with genes of the somatotrophic axis are associated with performance traits in dairy cattle.
Changes in the somatotrophic axis associated with the initiation of lactation.
Indeed, a significant correlation was found between plasma concentrations of IGF-1 and the capacity of the high-affinity somatotrophic binding sites (Breier et al., 1988).
The somatotrophic axis in young steers: influence of nutritional status and oestradiol-17p on hepatic high- and low-affinity somatotrophic biding sites.
The role of the somatotrophic
axis in the metabolism of the chicken.
Among these pathways, the somatotrophic
axis (GH/IGF-I axis) should be emphasized because of its key roles in postnatal growth and metabolism in mammals (Shoshana et al., 2000; Burkhard et al., 2005).
Louis, MO, USA) (Yi et al., 2006) were found to enhance the growth performance of weaning pigs and modulate the intestinal microbial population and pH of early-weaned pigs, but the studies on the somatotrophic
axis and immune response were very limited.