Title:Pharmacokinetic and Pharmacodynamic Evaluation of Telmisartan-loaded
Novel Curcumin-tagged Solid Nanodispersion for the Treatment of
Diabetic Nephropathy in an Animal Model
Volume: 14
Issue: 1
Author(s): Aruna Rawat, Vikas Jhawat*, Samrat Chauhan and Rohit Dutt
Affiliation:
- Department of Pharmaceutical Science, School of Medical and Allied Science, GD Goenka University, Gurugram, Haryana, India
Keywords:
Diabetic nephropathy, telmisartan, curcumin, solid nanodispersion, pharmacokinetics, pharmacodynamics.
Abstract:
Aims: This study aimed to evaluate the therapeutic efficacy of telmisartan-loaded
novel curcumin-tagged solid nanodispersion in streptozotocin-nicotinamide-induced diabetic
nephropathy in Wistar rats.
Objectives: The objective of this study was to perform a comprehensive pharmacokinetic and
pharmacodynamic evaluation of a novel curcumin-tagged solid nanodispersion loaded with
telmisartan, with the aim of assessing its potential as a treatment for diabetic nephropathy in an
animal model. Specifically, the following objectives will be addressed: formulation and characterization,
in vitro evaluation, pharmacokinetics and pharmacodynamics evaluation, and comparative
analysis.
Materials and Methods: Telmisartan-loaded curcumin-tagged solid nanodispersion was prepared
using the emulsion solvent evaporation method. The optimized formulation was evaluated for
pharmacokinetic and pharmacodynamic parameters in an animal model. Wistar rats were divided
into 5 groups, with 6 animals in each group. Diabetes was induced using nicotinamide (240
mg/kg) and streptozotocin (55 mg/kg, i.p.) injections in the animals. After 30 to 45 days of introduction,
diabetic nephropathy was manifested. The kidneys and pancreas were used for histological
analysis and renal and pancreatic damage assessment.
Results: In-vivo studies showed better bioavailability with the t1/2 and Cmax of TLS-15 was 14.92
± 0.47 hours and 0.32 ± 0.009, respectively, within 2 hours as compared to the t1/2 and Cmax of MP
was 4.38 ± 0.19 hours and 0.19 ± 0.008 owing to the better dissolution due to solubility improvement.
When compared to the commercially available product, TLS-15 was found to have
blood glucose and body weight that were, respectively, 1.01 and 1.03 times higher. Kidney
measures, such as serum urea and creatinine, were found to be 0.71 and 1.16 times lower for
TLS-15, respectively, and albumin had a value that was 1.13 times higher than for the commercial
formulation. Urine indicators, urine albumin, and creatinine estimations, as well as cytokine
estimations, revealed that TLS-15 had creatinine levels that were 1.17 times higher and IL-6 levels
that were 0.77 times higher than those of a commercial batch.
Conclusion: The findings strongly support the renoprotective and pancreatic protective effects of
TLS and Cur (SND-Solid Nanodispersion) combined by lowering levels of cytokines factor (IL-
6), kidney, and lipid parameters. The postulated mechanism might be the combined inhibitory action
of TLS and Cur.