Cited by 12Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismPeroxisome Proliferator-Activated Receptors

The DOI matches its Crossref record; 35 of the 35 references it cites were found in a registry or an index.

PEDF Expression Is Inhibited by Insulin Treatment in Adipose Tissue via Suppressing 11β-HSD1

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Abstract

Early intensive insulin therapy improves insulin sensitivity in type 2 diabetic patients; while the underlying mechanism remains largely unknown. Pigment epithelium-derived factor (PEDF), an anti-angiogenic factor, is believed to be involved in the pathogenesis of insulin resistance. Here, we hypothesize that PEDF might be down regulated by insulin and then lead to the improved insulin resistance in type 2 diabetic patients during insulin therapy. We addressed this issue by investigating insulin regulation of PEDF expression in diabetic conditions. The results showed that serum PEDF was reduced by 15% in newly diagnosed type 2 diabetic patients after insulin therapy. In adipose tissue of diabetic Sprague-Dawley rats, PEDF expression was associated with TNF-α elevation and it could be decreased both in serum and in adipose tissue by insulin treatment. In adipocytes, PEDF was induced by TNF-α through activation of NF-κB. The response was inhibited by knockdown and enhanced by over expression of NF-κB p65. However, PEDF expression was indirectly, not directly, induced by NF-κB which promoted 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) expression in adipocytes. 11β-HSD1 is likely to stimulate PEDF expression through production of active form of glucocorticoids as dexamethasone induced PEDF expression in adipose tissue. Insulin inhibited PEDF by down-regulating 11β-HSD1 expression. The results suggest that PEDF activity is induced by inflammation and decreased by insulin through targeting 11β-HSD1/glucocorticoid pathway in adipose tissue of diabetic patients.

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Crossref · 10.1371/journal.pone.0084016

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  • Additional genes outside the classic lipolytic pathway have been implicated in the lipolytic effects of glucocorticoids, such as phosphodiesterase 3b, pigment epithelium derived factor, and angiopoietin-like 4.

    “Additional genes outside the classic lipolytic pathway have been implicated in the lipolytic effects of glucocorticoids, such as phosphodiesterase 3b,4 pigment epithelium derived factor24 and angiopoietin‐like 4;25”

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Metadata

Authors
Zhou, Y., Xu, F., Deng, H., Bi, Y., Sun, W., Zhao, Y., Chen, Z., & Weng, J.
Affiliations
Key Laboratory of Guangdong Province (CN)
Corresponding author
Weng, Jianping
Venue
PLoS ONE
Published
2013-12-18
Volume
8
Issue
12
Pages
e84016
ISSN
1932-6203 (ISSN-L)
OpenAlex
W1999643046
Cited by
12
References
35
Citations by year
2023: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2017: 1 · 2016: 3 · 2015: 1 · 2014: 2
FWCI
1.46
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • National Natural Science Foundation of China (81000324, 82000)
  • Sun Yat-sen University (82000)
  • Tokyo Medical and Dental University
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology (medical) › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
pigment epithelium-derived factor, insulin resistance, type 2 diabetes, 11β-hydroxysteroid dehydrogenase type 1, adipose tissue, adipocytes, TNF-α, NF-κB p65, glucocorticoids, dexamethasone, inflammation, anti-angiogenic factors, intensive insulin therapy
MeSH terms
Pigment Epithelium-Derived Factor, Adipose Tissue, Animals, Dexamethasone, Diabetes Mellitus, Type 2, Eye Proteins, Female, Gene Expression Regulation, Humans, Insulin, Insulin Resistance, Male, Middle Aged, Nerve Growth Factors, Tumor Necrosis Factor-alpha, Serpins, NF-kappa B, Rats, Sprague-Dawley, 3T3-L1 Cells, 11-beta-Hydroxysteroid Dehydrogenase Type 1, Mice, Rats

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