Cited by 97Hormonal Regulation and HypertensionIon Transport and Channel RegulationRenin-Angiotensin System Studies

Low renal mineralocorticoid receptor expression at birth contributes to partial aldosterone resistance in neonates

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Martinerie, Laetitia, Viengchareun, Say, Delezoide, Anne-Lise, Jaubert, Francis, Sinico, Martine, Prevot, Sophie, Boileau, Pascal, Meduri, Geri +1 more·2009·Endocrinology

Abstract

The human neonatal period is characterized by renal immaturity with impaired capacity to regulate water and sodium homeostasis, resembling partial aldosterone resistance. Because aldosterone effects are mediated by the mineralocorticoid receptor (MR), we postulated that this hormonal unresponsiveness could be related to low MR expression in the distal nephron. We measured aldosterone and renin levels in umbilical cord blood of healthy newborns. We used quantitative real-time PCR and immunohistochemistry to analyze the expression of MR and key players of the mineralocorticoid signaling pathway during human and mouse renal development. High aldosterone and renin levels were found at birth. MR mRNA was detected in mouse kidney at d 16 postcoitum, peaking at d 18 postcoitum, but its expression was surprisingly very low at birth, rising progressively afterward. Similar biphasic temporal expression was observed during human renal embryogenesis, with a transient expression between 15 and 24 wk of gestation but an undetectable immunoreactive MR in late gestational and neonatal kidneys. This cyclic MR expression was tightly correlated with the evolution of the 11beta-hydroxysteroid dehydrogenase type 2 and the epithelial sodium channel alpha-subunit. In contrast, glucocorticoid and vasopressin receptors and aquaporin 2 followed a progressive and sustained evolution during renal maturation. Our study provides the first evidence for a low renal MR expression level at birth, despite high aldosterone levels, which could account for compromised postnatal sodium handling. Elucidation of regulatory mechanisms governing MR expression should lead to new strategies for the management of sodium waste in preterms and neonates.

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Crossref · 10.1210/en.2008-1498

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  • These patients may recover spontaneously and grow to adulthood without therapy, probably reflecting the increasing sensitivity to mineralocorticoid action and sodium intake with advancing age.

    “These patients may recover spontaneously and grow to adulthood without therapy, probably reflecting the increasing sensitivity to mineralocorticoid action and sodium intake with advancing age (480, 481) (Fig. 11).”

    From The Molecular Biology, Biochemistry, and Physiology of Human Steroidogenesis and Its Disorders (2011) · cites this paper as [481]

    The Discussion (page not available in our copy) reports that renal mineralocorticoid receptor levels rise after birth as the kidney matures, supporting an age-related change in mineralocorticoid responsiveness. It does not say that patients recover spontaneously or reach adulthood without therapy, nor does it establish increasing sodium intake with age as the reason. Instead, it says salt wasting in children with PHA1a can be rescued by sodium supplementation. (LLM, conf=0.83)

    Experimental — accuracy not yet measured
  • The need for mineralocorticoids decreases with age, as serum aldosterone is high and renal mineralocorticoid receptor mRNA is low at birth, and the salt content in most diets is high.

    “The need for MCs decreases with age, as serum aldosterone is high and renal MC receptor mRNA is low at birth (204), and the salt content in most diets is high.”

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Authors
Martinerie, L., Viengchareun, S., Delezoide, A.-L., Jaubert, F., Sinico, M., Prevot, S., Boileau, P., Meduri, G., & Lombès, M.
Affiliations
  • Institut National de la Santé et de la Recherche Médicale (L.M., S.V., G.M., M.L.), Unité 693, Le Kremlin-Bicêtre F-94276, France
  • Université Paris-Sud (FR)
  • Assistance Publique – Hôpitaux de Paris (FR)
  • Hôpital Necker-Enfants Malades (FR)
  • Hôpital Intercommunal de Créteil (FR)
  • et de Pédiatrie et Réanimation Néonatales (P.B.), Clamart F-92141, France
Venue
Endocrinology
Published
2009-05-28
Volume
150
Issue
9
Pages
4414-4424
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2159132227
Cited by
97
References
45
Citations by year
2026: 7 · 2025: 5 · 2024: 6 · 2023: 7 · 2022: 3 · 2021: 4 · 2020: 4 · 2019: 6 · 2018: 4 · 2017: 11 · 2016: 7 · 2015: 3 · 2014: 4 · 2013: 6 · 2012: 7
FWCI
4.61
Type
journal article
Language
en
Open access
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • HAL (submittedVersion, other-oa)
Funders
  • Pfizer
  • Institut National de la Santé et de la Recherche Médicale
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Hormonal Regulation and Hypertension
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Ion Transport and Channel Regulation
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Renin-Angiotensin System Studies
Keywords
mineralocorticoid receptor, kidney development, umbilical cord blood, aldosterone, renin, 11β-hydroxysteroid dehydrogenase type 2, epithelial sodium channel, aquaporin-2, sodium homeostasis, preterm infants
MeSH terms
Aldosterone, Animals, Drug Resistance, Female, Humans, Infant, Newborn, Kidney, Male, Receptors, Glucocorticoid, Renin, Renin-Angiotensin System, Receptors, Vasopressin, Receptors, Mineralocorticoid, 11-beta-Hydroxysteroid Dehydrogenase Type 2, Mice, Aquaporin 2, Epithelial Sodium Channels

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