Journal
CURRENT ISSUES IN MOLECULAR BIOLOGY
Volume 44, Issue 4, Pages 1664-1676Publisher
MDPI
DOI: 10.3390/cimb44040114
Keywords
immune; renal; inflammation; PCR; histopathology
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Funding
- Hills Pet Nutrition Center (Hills PNC), a Colgate-Palmolive Company
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Chronic low-grade inflammation is a significant factor in the progression of kidney disease, and activation of pro-inflammatory genes may contribute to renal inflammation and fibrosis. Blocking their activation could be important in ameliorating the initiation and/or progression of renal disease.
Chronic low-grade inflammation is a key contributor to the progression of kidney disease. The release of cytokines and other pro-inflammatory proteins may further contribute to detrimental kidney health by increasing interstitial edema and renal fibrosis. The aim of the present study was to investigate the inflammatory markers in canines who developed renal disease naturally and were diagnosed with renal disease either during life or following necropsy, as assessed by a veterinarian. RNA was isolated from canine blood obtained at necropsy and stored as bioarchived samples from ten canines with renal disease (9.6-14.7 yr) and ten controls (10.1-14.8 yr). At the time of death, the mean blood creatinine concentration and BUN were elevated in dogs with renal disease compared to control (both p < 0.01). Samples were assessed for changes in gene expression using the Canine cytokine RT2 Profiler PCR Array for inflammation. There was a significant increase in C-C Motif Chemokine Ligand 16 (CCL16), C-X-C Motif Chemokine Ligand 5 (CXCL5), Interleukin 16 (IL-16), and Complement Component 5 (C5) (all p < 0.05 vs. con). In addition, there was also a statistically non-significant increase in 49 genes and a down-regulation in 35 genes from a panel of total 84 genes. Pro-inflammatory genes including CCL16, CXCL5, IL-16, and C5 can all contribute to renal inflammation and fibrosis through different signaling pathways and may lead to a progressive impairment of kidney function. Blockade of their activation may be important in ameliorating the initiation and/or the progression of renal disease.
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