Delayed Contralateral Nephrectomy Halted Post-Ischemic Renal Fibrosis Progression and Inhibited the Ischemia-Induced Fibromir Upregulation in Mice.
Beáta RókaPál TodTamás KaucsárÉva Nóra BukoszaImre VörösZoltán V VargaBalázs PetrovichBence ÁggPéter FerdinandyGabor SzénásiPeter HamarPublished in: Biomedicines (2021)
(1) Background: Ischemia reperfusion (IR) is the leading cause of acute kidney injury (AKI) and results in predisposition to chronic kidney disease. We demonstrated that delayed contralateral nephrectomy (Nx) greatly improved the function of the IR-injured kidney and decelerated fibrosis progression. Our aim was to identify microRNAs (miRNA/miR) involved in this process. (2) Methods: NMRI mice were subjected to 30 min of renal IR and one week later to Nx/sham surgery. The experiments were conducted for 7-28 days after IR. On day 8, multiplex renal miRNA profiling was performed. Expression of nine miRNAs was determined with qPCR at all time points. Based on the target prediction, plexin-A2 and Cd2AP were measured by Western blot. (3) Results: On day 8 after IR, the expression of 20/1195 miRNAs doubled, and 9/13 selected miRNAs were upregulated at all time points. Nx reduced the expression of several ischemia-induced pro-fibrotic miRNAs (fibromirs), such as miR-142a-duplex, miR-146a-5p, miR-199a-duplex, miR-214-3p and miR-223-3p, in the injured kidneys at various time points. Plexin-A2 was upregulated by IR on day 10, while Cd2AP was unchanged. (4) Conclusion: Nx delayed fibrosis progression and decreased the expression of ischemia-induced fibromirs. The protein expression of plexin-A2 and Cd2AP is mainly regulated by factors other than miRNAs.
Keyphrases
- poor prognosis
- long non coding rna
- cell proliferation
- acute kidney injury
- high glucose
- chronic kidney disease
- diabetic rats
- transcription factor
- binding protein
- drug induced
- minimally invasive
- robot assisted
- oxidative stress
- cardiac surgery
- randomized controlled trial
- high throughput
- type diabetes
- systemic sclerosis
- metabolic syndrome
- south africa
- high fat diet induced
- liver fibrosis
- signaling pathway
- insulin resistance
- anti inflammatory
- brain injury
- study protocol
- atrial fibrillation
- idiopathic pulmonary fibrosis