Analogous mechanisms of kidney resorption are also associated with hypomagnesuria and hypocalciuria in hypertensive pregnant women  and . In addition to urinary Mg excretion, it is likely that erythrocyte Mg also reflects alterations in dietary intake, as demonstrated by the observed positive relationship between erythrocyte Mg and Lumacaftor Mg intake. It is known that erythrocytes, which have half-life of 120 days, can express long-term alterations in Mg status .
A possible limitation of the present investigation relates to the method of assessment of dietary intake, which is susceptible to random and systematic errors. In the study, pregnant women received advice from a trained nutritionist during the preparation of their food records, and data concerning nutrients were adjusted on the basis of energy intake selleck chemicals llc and intra-individual variation. However, published reference values for biochemical parameters in pregnant women are somewhat limited, especially those relating to different trimesters of pregnancy and to physiological particularities, such as hemodilution.
In conclusion, despite the low intake of Ca and Mg by the study population, no alterations were detected in the levels of plasma CTX, plasma Mg or erythrocyte Mg levels in the presence of hypercalciuria and hypomagnesuria in pregnant women. Hypomagnesuria is likely to have contributed to the maintenance of normal plasma and erythrocyte Mg levels in the study population. The relationships established between Ca and Mg may help to understand the complex physiological adaptations that are involved in the metabolism of these minerals during pregnancy. The authors offer their sincere thanks to all of those who participated in the study. Financial support from the Conselho Nacional de Desenvolvimento Científico e Tecnológico, the Coordenação Protirelin de Aperfeiçoamento de Pessoal de Nível Superior and the Fundação de Amparo à Pesquisa do Estado de São Paulo (process 2007/06980-6) is gratefully acknowledged. The authors declare no conflict of interest.
“Prebiotics are food compounds that cannot be digested by the enzymes of the human gastrointestinal tract and behave like fibres. They act as specific substrates for beneficial bacteria, thereby selectively stimulating proliferation or activity of desirable bacterial populations in the colon, such as bifidobacteria and lactobacilli (probiotics) (Gibson & Roberfroid, 1995; Mattila-Sandholm et al., 2002). Because prebiotics present functional characteristics similar to soluble fibres, they are fermented in the large intestine by colonic bacteria, producing lactic acid, short chain fatty acids (acetic, propionic and butyric) and gases, thus reducing the intestinal pH and inhibiting proliferation of harmful microorganisms (Wang, 2009).