Role of perivascular adipose tissue in nicotine‑induced endothelial cell inflammatory responses

  • Authors:
    • Chao‑Nan Wang
    • Gen‑Huan Yang
    • Zhan‑Qi Wang
    • Chang‑Wei Liu
    • Tian‑Jia Li
    • Zhi‑Chao Lai
    • Shi‑Ying Miao
    • Lin‑Fang Wang
    • Bao Liu
  • View Affiliations

  • Published online on: November 9, 2016     https://doi.org/10.3892/mmr.2016.5934
  • Pages: 5713-5718
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Abstract

Smoking is considered to be one of the primary causes of atherosclerosis and vascular injury. Previous studies have shown that nicotine in tobacco can lead to vascular inflammation and endothelial dysfunction. Perivascular adipose tissue (PVAT) is known to secrete various types of adipokines to maintain vascular homeostasis. The present study investigated whether nicotine‑induced PVAT malfunction can accelerate endothelial inflammation and eventually lead to endothelial dysfunction. The levels of inflammatory adipokines, including nuclear factor (NF)‑κB, interleukin (IL)‑1β, IL‑6 and tumor necrosis factor (TNF)‑α, the ICAM‑1 and VCAM‑1 adhesion molecules and secretion of adiponectin were assessed in mature adipocytes and endothelial cells cultured alone or in co‑culture under nicotine stimulation. It was found that nicotine reduced the secretion of adiponectin and stimulated secretion of the NF‑κB, IL‑1β, IL‑6 and TNF‑α inflammatory adipokines in mature adipocytes. Although nicotine stimulated endothelial cells to secrete IL‑1β and IL‑6, no significant increase in the secretion of TNF‑α was observed. The co‑culture of mature adipocytes with endothelial cells markedly augmented the expression of the NF‑κB, IL‑1β, IL‑6 and TNF‑α inflammatory adipokines and the ICAM‑1 and VCAM‑1 adhesion molecules, and significantly lowered the levels of adiponectin. These findings suggested that nicotine induced mature adipocyte dysfunction, which caused the abnormal secretion of adiponectin and inflammatory adipokines, and exacerbated endothelial inflammation. These findings also suggested a mechanism whereby nicotine induced the secretion of adiponectin and inflammatory cytokines by adipocytes. The results of the present study elucidated a novel pathway induced by cigarette smoke, which contributed to atherosclerosis and vascular injury.
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December-2016
Volume 14 Issue 6

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Copy and paste a formatted citation
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Spandidos Publications style
Wang CN, Yang GH, Wang ZQ, Liu CW, Li TJ, Lai ZC, Miao SY, Wang LF and Liu B: Role of perivascular adipose tissue in nicotine‑induced endothelial cell inflammatory responses. Mol Med Rep 14: 5713-5718, 2016.
APA
Wang, C., Yang, G., Wang, Z., Liu, C., Li, T., Lai, Z. ... Liu, B. (2016). Role of perivascular adipose tissue in nicotine‑induced endothelial cell inflammatory responses. Molecular Medicine Reports, 14, 5713-5718. https://doi.org/10.3892/mmr.2016.5934
MLA
Wang, C., Yang, G., Wang, Z., Liu, C., Li, T., Lai, Z., Miao, S., Wang, L., Liu, B."Role of perivascular adipose tissue in nicotine‑induced endothelial cell inflammatory responses". Molecular Medicine Reports 14.6 (2016): 5713-5718.
Chicago
Wang, C., Yang, G., Wang, Z., Liu, C., Li, T., Lai, Z., Miao, S., Wang, L., Liu, B."Role of perivascular adipose tissue in nicotine‑induced endothelial cell inflammatory responses". Molecular Medicine Reports 14, no. 6 (2016): 5713-5718. https://doi.org/10.3892/mmr.2016.5934