Journal
JOURNAL OF PHARMACOLOGICAL SCIENCES
Volume 148, Issue 4, Pages 369-376Publisher
JAPANESE PHARMACOLOGICAL SOC
DOI: 10.1016/j.jphs.2022.02.003
Keywords
Polycystic kidney disease; Fluid secretion; Flavonoids; CFTR; PCK rats
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Funding
- Thailand Science Research and Innovation [RSA6280082]
- Royal Golden Jubilee-Ph.D. TRF scholarship (RGJ) [PHD/0215/2556]
- Center of Excellence for Innovation in Chemistry, Ministry of Higher Education, Science, Research and Innovation
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This study demonstrates the potential therapeutic application of pinostrobin in polycystic kidney disease (PKD) by reducing renal cyst expansion through inhibition of cell proliferation and CFTR-mediated Cl(-) secretion.
Cystic fibrosis transmembrane conductance regulator (CFTR) plays crucial role in renal cyst expansion via increase in fluid accumulation. Inhibition of CFTR has been proposed to retard cyst development and enlargement in polycystic kidney disease (PKD). Pinostrobin, a bioactive natural flavonoid, possesses several pharmacological effects. The present study investigated pharmacological effects of pinostrobin on CFTR-mediated Cl(- )secretion and renal cyst expansion in in vitro and in vivo models. Pinostrobin (10 and 50 mu M) reduced number of MDCK cell-derived cyst colonies and inhibited cyst expansion via inhibition of cell proliferation and CFTR-mediated Cl(-)secretion. The inhibitory effect of pinostrobin was not due to the decrease in cell viability and activity of Na+-K+-ATPase. We also investigated the natural analogue pinocembrin as well as the synthetic analogue pinostrobin oxime. Both pinocembrin and pinostrobin oxime did not reduce CFTR-mediated Cl- secretion. In PKD rats, oral administration of pinostrobin (40 mg/kg/day) exhibited a decreasing in cystic area compared to vehicle-treated rats. Pinostrobin treatment inhibited renal expression of CFTR protein in PKD rats. Our findings highlighted the potential therapeutic application of pinostrobin in PKD. (C) 2022 The Authors. Production and hosting by Elsevier B.V. on behalf of Japanese Pharmacological Society.
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