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Abstract Title:

β-cryptoxanthin alleviates myocardial ischaemia/reperfusion injury by inhibiting NF-κB-mediated inflammatory signalling in rats.

Abstract Source:

Arch Physiol Biochem. 2020 May 2:1-8. Epub 2020 May 2. PMID: 32362203

Abstract Author(s):

Feng Zhang, Dong Shi, Xinduo Wang, Yahan Zhang, Wentao Duan, Yuliang Li

Article Affiliation:

Feng Zhang

Abstract:

The present study aimed to explore the function and molecular mechanism ofβ-cryptoxanthin on myocardial ischaemia-reperfusion injury (MIRI). Left anterior descending coronary artery ligation with reperfusion was utilised to establish a MIRI rat model. The results indicated that β-cryptoxanthin decreases infarct size and ameliorates signs of pathological histology in MIRI. TNF-α, IL-1β, and IL-6 levels in the serum were attenuated in response to β-cryptoxanthin treatment, serum LDH and CK-MB activities were also decreased. Immunohistochemical analysis and western blot results suggested that p65 was translocated to the nucleus in the I/R injury rat model. However, in the β-cryptoxanthin administration group, p65 expression and activity in the nucleus were decreased in a dose-dependent manner. Furthermore, p-p38 MAPK levels in response to β-cryptoxanthin were decreased, indicating that MAPK is involved in NF-κB signalling pathway regulation. In conclusion, β-cryptoxanthin alleviates myocardial ischaemia/reperfusion injury by inhibiting NF-κB-mediated inflammatory signalling in rats.

Study Type : Animal Study

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