Cited by 133Cholesterol and Lipid MetabolismPregnancy and preeclampsia studiesLipid metabolism and disorders

Localization and regulation of the human very low density lipoprotein/apolipoprotein-E receptor: trophoblast expression predicts a role for the receptor in placental lipid transport.

Wittmaack, F M, Gåfvels, M E, Bronner, M, Matsuo, H, McCrae, K R, Tomaszewski, J E, Robinson, S L, Strickland, D K +1 more·1995·Endocrinology

Abstract

The very low density lipoprotein/apolipoprotein-E receptor (VLDLR) is the newest member of the low density lipoprotein receptor (LDLR) family. Very little is known about VLDLR localization and regulation. Immunohistochemical analysis of human placenta with a specific polyclonal antibody detected VLDLR in syncytiotrophoblast and intermediate trophoblast cells. VLDLR transcripts were also localized in these cells by in situ hybridization histochemistry. In addition, VLDLR messenger RNA (mRNA) was detected in villous core endothelial cells and cells appearing to be Hofbauer cells. Northern blot analysis of placenta revealed a 2.6-fold increase in VLDLR mRNA at term compared to that in the first trimester. The regulation of VLDLR expression was studied in JEG-3 and BeWo choriocarcinoma cells, two trophoblast-derived cell lines. Treatment of these cells with 8-bromo-cAMP caused a profound suppression of VLDLR message, whereas LDLR transcripts were increased. Incubation of JEG-3 cells with 25-hydroxycholesterol did not lead to sterol negative feedback on VLDLR gene expression, unlike LDLR mRNA, which declined markedly. Insulin (200 mg/L) up-regulated VLDLR message in JEG-3 cells 2-fold, as did the fibrate hypolipidemic drug, clofibric acid. We conclude that 1) VLDLR is expressed in human placental trophoblast cells in a pattern consistent with a role in placental lipid transport; 2) VLDLR expression is high at term relative to that in the first trimester; and 3) the trophoblast VLDLR is subject to down-regulation by cAMP and up-regulation by insulin and fibrate hypolipidemic drugs.

Integrity signals

Registry

Crossref · 10.1210/endo.136.1.7828550

Cites

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Expression of the mRNAs encoding the VLDL-R and LDL-R increases across gestation, but is suppressed at term in pregnancies complicated by pre-eclampsia and severe growth restriction.

    “Expression of the mRNAs encoding the VLDL-R and LDL-R increases across gestation (402, 580), but is suppressed at term in pregnancies complicated by pre-eclampsia and severe growth restriction (402, 552).”

    From Placental Origins of Chronic Disease (2016) · cites this paper as [580]

Cited by

Sorted by citations

Authors
Wittmaack, F. M., Gåfvels, M. E., Bronner, M., Matsuo, H., McCrae, K. R., Tomaszewski, J. E., Robinson, S. L., Strickland, D. K., & Strauss, J. F.
Affiliations
University of Pennsylvania (US)
Venue
Endocrinology
Published
1995-01
Volume
136
Issue
1
Pages
340-348
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2041398886
Cited by
133
References
0
Citations by year
2026: 2 · 2025: 2 · 2022: 2 · 2021: 3 · 2020: 2 · 2019: 5 · 2018: 2 · 2017: 3 · 2016: 4 · 2015: 2 · 2014: 7 · 2013: 1 · 2012: 3
FWCI
10.76
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5r01gm042581-09, 5r01hd029946-04)
  • National Institute of General Medical Sciences (GM-42581)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (HD-29946)
Topics
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Health Sciences › Medicine › Obstetrics and Gynecology › Pregnancy and preeclampsia studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Lipid metabolism and disorders
Keywords
VLDLR, low-density lipoprotein receptor family, placenta, trophoblast, syncytiotrophoblast, gene expression regulation, cyclic AMP, insulin, clofibric acid, fibrates, 25-hydroxycholesterol, JEG-3 cells, BeWo cells, Hofbauer cells
MeSH terms
Apolipoproteins, Biological Transport, Endothelium, Vascular, Forecasting, Humans, Placenta, Receptors, LDL, RNA, Messenger, Tissue Distribution, Trophoblasts, Tumor Cells, Cultured, Receptors, Lipoprotein, Low Density Lipoprotein Receptor-Related Protein-1, Lipid Metabolism

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review