Cargando…

Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia

Breast milk cholesterol content may imply to affect short- and long-term cholesterol homeostasis in the offspring. However, mechanisms of regulating milk cholesterol concentration are only partly understood. We used different mouse models to assess the impact of high cholesterol diet (HC)- or geneti...

Descripción completa

Detalles Bibliográficos
Autores principales: Dimova, Lidiya G., Lohuis, Mirjam A. M., Bloks, Vincent W., Tietge, Uwe J. F., Verkade, Henkjan J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5995842/
https://www.ncbi.nlm.nih.gov/pubmed/29891894
http://dx.doi.org/10.1038/s41598-018-27115-8
_version_ 1783330684362817536
author Dimova, Lidiya G.
Lohuis, Mirjam A. M.
Bloks, Vincent W.
Tietge, Uwe J. F.
Verkade, Henkjan J.
author_facet Dimova, Lidiya G.
Lohuis, Mirjam A. M.
Bloks, Vincent W.
Tietge, Uwe J. F.
Verkade, Henkjan J.
author_sort Dimova, Lidiya G.
collection PubMed
description Breast milk cholesterol content may imply to affect short- and long-term cholesterol homeostasis in the offspring. However, mechanisms of regulating milk cholesterol concentration are only partly understood. We used different mouse models to assess the impact of high cholesterol diet (HC)- or genetically-induced hypercholesterolaemia on milk cholesterol content. At day 14 postpartum we determined milk, plasma and tissue lipids in wild type (WT), LDL receptor knockout (Ldlr−/−), and ATP-binding cassette transporter G8 knockout (Abcg8−/−) mice fed either low- or 0.5% HC diet. In chow-fed mice, plasma cholesterol was higher in Ldlr−/− dams compared to WT. HC-feeding increased plasma cholesterol in all three models compared to chow diet. Despite the up to 5-fold change in plasma cholesterol concentration, the genetic and dietary conditions did not affect milk cholesterol levels. To detect possible compensatory changes, we quantified de novo cholesterol synthesis in mammary gland and liver, which was strongly reduced in the various hypercholesterolaemic conditions. Together, these data suggest that milk cholesterol concentration in mice is not affected by conditions of maternal hypercholesterolaemia and is maintained at stable levels via ABCG8- and LDLR-independent mechanisms. The robustness of milk cholesterol levels might indicate an important physiological function of cholesterol supply to the offspring.
format Online
Article
Text
id pubmed-5995842
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-59958422018-06-21 Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia Dimova, Lidiya G. Lohuis, Mirjam A. M. Bloks, Vincent W. Tietge, Uwe J. F. Verkade, Henkjan J. Sci Rep Article Breast milk cholesterol content may imply to affect short- and long-term cholesterol homeostasis in the offspring. However, mechanisms of regulating milk cholesterol concentration are only partly understood. We used different mouse models to assess the impact of high cholesterol diet (HC)- or genetically-induced hypercholesterolaemia on milk cholesterol content. At day 14 postpartum we determined milk, plasma and tissue lipids in wild type (WT), LDL receptor knockout (Ldlr−/−), and ATP-binding cassette transporter G8 knockout (Abcg8−/−) mice fed either low- or 0.5% HC diet. In chow-fed mice, plasma cholesterol was higher in Ldlr−/− dams compared to WT. HC-feeding increased plasma cholesterol in all three models compared to chow diet. Despite the up to 5-fold change in plasma cholesterol concentration, the genetic and dietary conditions did not affect milk cholesterol levels. To detect possible compensatory changes, we quantified de novo cholesterol synthesis in mammary gland and liver, which was strongly reduced in the various hypercholesterolaemic conditions. Together, these data suggest that milk cholesterol concentration in mice is not affected by conditions of maternal hypercholesterolaemia and is maintained at stable levels via ABCG8- and LDLR-independent mechanisms. The robustness of milk cholesterol levels might indicate an important physiological function of cholesterol supply to the offspring. Nature Publishing Group UK 2018-06-11 /pmc/articles/PMC5995842/ /pubmed/29891894 http://dx.doi.org/10.1038/s41598-018-27115-8 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Dimova, Lidiya G.
Lohuis, Mirjam A. M.
Bloks, Vincent W.
Tietge, Uwe J. F.
Verkade, Henkjan J.
Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia
title Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia
title_full Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia
title_fullStr Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia
title_full_unstemmed Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia
title_short Milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia
title_sort milk cholesterol concentration in mice is not affected by high cholesterol diet- or genetically-induced hypercholesterolaemia
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5995842/
https://www.ncbi.nlm.nih.gov/pubmed/29891894
http://dx.doi.org/10.1038/s41598-018-27115-8
work_keys_str_mv AT dimovalidiyag milkcholesterolconcentrationinmiceisnotaffectedbyhighcholesteroldietorgeneticallyinducedhypercholesterolaemia
AT lohuismirjamam milkcholesterolconcentrationinmiceisnotaffectedbyhighcholesteroldietorgeneticallyinducedhypercholesterolaemia
AT bloksvincentw milkcholesterolconcentrationinmiceisnotaffectedbyhighcholesteroldietorgeneticallyinducedhypercholesterolaemia
AT tietgeuwejf milkcholesterolconcentrationinmiceisnotaffectedbyhighcholesteroldietorgeneticallyinducedhypercholesterolaemia
AT verkadehenkjanj milkcholesterolconcentrationinmiceisnotaffectedbyhighcholesteroldietorgeneticallyinducedhypercholesterolaemia