A new animal study from Europe has drawn an association between pregnant mothers’ sodium intake and their newborn’s kidney development. Among the most significant aspects of the study’s findings is that either too much or too little salt during pregnancy had an adverse effect on the prenatal development of the offspring’s kidneys. The consequence of such disruption can lead to high blood pressure in later years.
These are the conclusions reached in the study, “Both High and Low Maternal Salt Intake in Pregnancy Alters Kidney Development in the Offspring,” conducted by Nadezda Koleganova, Grzegorz Piecha, Annett Müller, Monika Weckbach, Peter Schirmacher, and Marie-Luise Gross-Weissmann, Eberhard Ritz and Luis Eduardo Becker, all with the University of Heidelberg in Heidelberg, DE; and Jens Randel Nyengaard of the University of Aarhus, Aarhus, DK. Their study is published in the online edition of the American Journal of Physiology--Renal Physiology.Background
Previous research has also linked high blood pressure with a low nephron number, critical because the nephron is the basic structural and functional unit of the kidney. The nephron eliminates wastes from the body, regulates blood volume and blood pressure, controls levels of electrolytes and metabolites, and regulates blood pH. Its functions are vital to life and are regulated by the endocrine system.Methodology
The kidney structure was assessed at postnatal weeks 1 and 12, and the expression of proteins known to be involved in kidney development were examined at birth and 1 week of age. Blood pressure was measured by telemetry in male offspring between the ages of two and nine months.
In women, each mother-to-be has specific health issues and conditions that require guidance from a health provider. This study sheds light on the issue of salt intake during pregnancy and draws attention to the possible consequences of consuming too much or too little salt during pregnancy and the impact it may have on the kidney development of an offspring.
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