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Polydeoxyribonucleotide Exerts Therapeutic Effect by Increasing VEGF and Inhibiting Inflammatory Cytokines in Ischemic Colitis Rats
- Source :
- BioMed Research International, BioMed Research International, Vol 2020 (2020)
- Publication Year :
- 2020
- Publisher :
- Hindawi, 2020.
-
Abstract
- Ischemic colitis is resulted from an inadequate blood supply to a segment or entire colon. Polydeoxyribonucleotide (PDRN), extracted from salmon sperm, has been reported to exert anti-inflammatory and anti-ischemic effects through the adenosine A2A receptor (A2AR). We investigated whether PDRN possesses therapeutic effectiveness on ischemic colitis rats. Ischemic colitis was induced by selective devascularization. The skin temperature on the ischemic colitis-induced region was determined. To assess the colonic damage score and collagen deposition, colonic tissue sections were stained with hematoxylin and eosin (H&E), and Masson trichrome staining was performed. Western blot analysis for A2AR, vascular endothelial growth factor (VEGF), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and IL-6, Bax, Bcl-2, and extracellular signal-regulated kinase 1/2 (ERK1/2) was performed. Skin temperature was increased and mucosal damage and collagen deposition were observed in the affected colonic tissues in the ischemic colitis rats. Expressions of inflammatory cytokines (TNF-α, IL-1β, and IL-6) and inflammatory mediator (COX-2) were upregulated in the ischemic colitis rats. Apoptosis was increased by decreasing the ratio of Bcl-2 to Bax and by suppressing the phosphorylated form of ERK1/2 expression in the ischemic colitis rats. Treatment with PDRN alleviated mucosal damage reduced the expressions of inflammatory cytokines and COX-2 and inhibited apoptosis in the ischemic colitis rats. PDRN treatment more enhanced the expressions of A2AR and VEGF in the ischemic colitis rats. PDRN showed therapeutic effectiveness on ischemic colitis by increasing VEGF expression and inhibiting inflammatory cytokines and COX-2 through enhancing A2AR expression.
- Subjects :
- 0301 basic medicine
Male
Vascular Endothelial Growth Factor A
Colon
H&E stain
Apoptosis
Pharmacology
General Biochemistry, Genetics and Molecular Biology
Ischemic colitis
Proinflammatory cytokine
Rats, Sprague-Dawley
03 medical and health sciences
chemistry.chemical_compound
0302 clinical medicine
Polydeoxyribonucleotides
Western blot
medicine
Animals
Colitis
General Immunology and Microbiology
medicine.diagnostic_test
business.industry
General Medicine
medicine.disease
Rats
Vascular endothelial growth factor
030104 developmental biology
chemistry
030220 oncology & carcinogenesis
Medicine
Cytokines
Tumor necrosis factor alpha
business
Skin Temperature
Colitis, Ischemic
Research Article
Subjects
Details
- Language :
- English
- ISSN :
- 23146141 and 23146133
- Volume :
- 2020
- Database :
- OpenAIRE
- Journal :
- BioMed Research International
- Accession number :
- edsair.doi.dedup.....72755048d079715eff5873a5210b1890