Yang X. Design and optimization of crocetin loaded PLGA nanoparticles against diabetic nephropathy via suppression of inflammatory biomarkers: a formulation approach to preclinical study.
Drug Deliv 2020;
26:849-859. [PMID:
31524015 PMCID:
PMC6761602 DOI:
10.1080/10717544.2019.1642417]
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Abstract
Diabetic nephropathy (DN) is a serious complication of diabetes mellitus whose expand
process is linked with the fibrosis, renal hypertrophy and inflammation. The current study
was to formulate and optimize the nano-formulation of crocetin (CT-PLGA-NPs) against
Streptozotocin-induced renal nephropathy in rats. Double emulsion evaporation technique
was used for the preparation of CT-PLGA-NPs. CT-PLGA-NPs were scrutinized for
polydispersity index, size, gastric stability, entrapment, drug-loading capacity and
in-vitro drug release and in vivo preclinical study.
Single intraperitoneal injection of streptozotocin (STZ) (55 mg/kg) and rats were divided
into different group. Renal function and metabolic parameters of urine and serum were
estimated. Fibrotic protein, renal pro-inflammatory cytokines and degree of renal damage
expression were also determined. We also estimated the fibronectin, type IV collagen and
transforming growth factor-β1 for a possible mechanism of action. Crocetin supplement
(10 mg/kg) and CT-PLGA-NPs exhibited the accumulation of the drug in kidney and liver of
diabetic rats. Crocetin reduced the BGL and enhanced plasma insulin and body weight. Dose
dependent treatment of crocetin significantly (p < .001)
down-regulated the expression of renal tumor necrosis factor-α (TNF-α), interleukin-6
(IL-6), interleukin (IL)-1β (IL-1β) and Monocyte Chemoattractant Protein-1 (MCP-1).
Crocetin significantly (p < .001) altered the expression of
fibronectin, type IV collagen, and transforming growth factor-β1 (TGF-1β). Crocetin
significantly (p < .001) down-regulated the protein kinase C activity
and the expression of nuclear factor κB (NF-κB) p65 activity and protein production in
renal tissue. On the basis of the available result, we can conclude that nano-formulation
of crocetin could attenuate the diabetic nephropathy via antifibrotic and
anti-inflammatory effect.
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