Faculty Collaboration Database

Maternal diet during gestation and lactation modifies the severity of salt-induced hypertension and renal injury in Dahl salt-sensitive rats. Hypertension 2015 Feb;65(2):447-55

Date

12/03/2014

Pubmed ID

25452472

Pubmed Central ID

PMC4289102

DOI

10.1161/HYPERTENSIONAHA.114.04179

Scopus ID

2-s2.0-84921562280 (requires institutional sign-in at Scopus site)   55 Citations

Abstract

Environmental exposure of parents or early in life may affect disease development in adults. We found that hypertension and renal injury induced by a high-salt diet were substantially attenuated in Dahl SS/JrHsdMcwiCrl (SS/Crl) rats that had been maintained for many generations on the grain-based 5L2F diet compared with SS/JrHsdMcwi rats (SS/Mcw) maintained on the casein-based AIN-76A diet (mean arterial pressure, 116±9 versus 154±25 mm Hg; urinary albumin excretion, 23±12 versus 170±80 mg/d). RNAseq analysis of the renal outer medulla identified 129 and 82 genes responding to a high-salt diet uniquely in SS/Mcw and SS/Crl rats, respectively, along with minor genetic differences between the SS substrains. The 129 genes responding to salt in the SS/Mcw strain included numerous genes with homologs associated with hypertension, cardiovascular disease, or renal disease in human. To narrow the critical window of exposure, we performed embryo-transfer experiments in which single-cell embryos from 1 colony (SS/Mcw or SS/Crl) were transferred to surrogate mothers from the other colony, with parents and surrogate mothers maintained on their respective original diet. All offspring were fed the AIN-76A diet after weaning. Salt-induced hypertension and renal injury were substantially exacerbated in rats developed from SS/Crl embryos transferred to SS/Mcw surrogate mothers. Conversely, salt-induced hypertension and renal injury were significantly attenuated in rats developed from SS/Mcw embryos transferred to SS/Crl surrogate mothers. Together, the data suggest that maternal diet during the gestational-lactational period has substantial effects on the development of salt-induced hypertension and renal injury in adult SS rats.

Author List

Geurts AM, Mattson DL, Liu P, Cabacungan E, Skelton MM, Kurth TM, Yang C, Endres BT, Klotz J, Liang M, Cowley AW Jr

Authors

Erwin Cabacungan MD Associate Professor in the Pediatrics department at Medical College of Wisconsin
Allen W. Cowley Jr PhD Professor in the Physiology department at Medical College of Wisconsin
Aron Geurts PhD Professor in the Physiology department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Albuminuria
Animal Feed
Animals
Caseins
Disease Susceptibility
Edible Grain
Embryo Transfer
Female
Gene Expression Profiling
Gene-Environment Interaction
Humans
Hypertension
Kidney
Lactation
Phenotype
Pregnancy
Prenatal Exposure Delayed Effects
Rats
Rats, Inbred Dahl
Sodium Chloride, Dietary
Subtraction Technique