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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Inclusion complex and nanoclusters of cyclodextrin to increase the solubility and efficacy of albendazole

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Author(s):
Pacheco, P. A. [1] ; Rodrigues, L. N. C. [2] ; Ferreira, J. F. S. [3] ; Gomes, A. C. P. [1] ; Verissimo, C. J. [1] ; Louvandini, H. [4] ; Costa, R. L. D. [1] ; Katiki, L. M. [1]
Total Authors: 8
Affiliation:
[1] IZ APTA SAA, Inst Zootecnia, Rua Heitor Penteado 56, BR-13460000 Nova Odessa, SP - Brazil
[2] Univ Fed Sao Paulo, ICAQF UNIFESP, Diadema, SP - Brazil
[3] USDA ARS, US Salin Lab, 4500 Glenwood Dr, Riverside, CA 92501 - USA
[4] Univ Sao Paulo, Ctr Energia Nucl Agr, Piracicaba, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Parasitology Research; v. 117, n. 3, p. 705-712, MAR 2018.
Web of Science Citations: 2
Abstract

Albendazole (ABZ), a benzimidazole widely used to control gastrointestinal parasites, is poorly soluble in water, resulting in variable and incomplete bioavailability. This has favored the appearance ABZ-resistant nematodes and, consequently, an increase in its clinical ineffectiveness. Among the pharmaceutical techniques developed to increase drug efficacy, cyclodextrins (CDs) and other polymers have been extensively used with water-insoluble pharmaceutical drugs to increase their solubility and availability. Our objective was to prepare ABZ formulations, including beta-cyclodextrin (beta CD) or hydroxypropyl-beta-cyclodextrin (HP beta CD), associated or not to the water-soluble polymer polyvinylpyrrolidone (PVP). These formulations had their solubility and anthelmintic effect both evaluated in vitro. Also, their anthelmintic efficacy was evaluated in lambs naturally infected with gastrointestinal nematodes (GIN) through the fecal egg count (FEC) reduction test. In vitro, the complex ABZ/HP beta CD had higher solubility than ABZ/beta CD. The addition of PVP to the complexes increased solubility and dissolution rates more effectively for ABZ/HP beta CD than for ABZ/beta CD. In vivo, 48 lambs naturally infected with GIN were divided into six experimental groups: control, ABZ, ABZ/beta CD, ABZ/beta CD-PVP, ABZ/HP beta CD, and ABZ/HP beta CD-PVP. Each treated animal received 10 mg/kg of body weight (based on the ABZ dose) for three consecutive days. After 10 days of the last administered dose, treatment efficacy was calculated. The efficacy values were as follows: ABZ (70.33%), ABZ/beta CD (85.33%), ABZ/beta CD-PVP (82.86%), ABZ/HP beta CD (78.37%), and ABZ/HP beta CD-PVP (43.79%). In vitro, ABZ/HP beta CD and ABZ/HP beta CD-PVP had high solubility and dissolution rates. In vivo, although the efficacies of ABZ/beta CD, ABZ/beta CD-PVP, and ABZ/HP beta CD increased slightly when compared to pure ABZ, this increase was not significant (P > 0.05). (AU)

FAPESP's process: 13/15704-3 - Preparation, characterization and evaluation of biological activity of inclusion complexes and nanoclusters of cyclodextrins self-assembled to increase the solubility of poorly soluble drugs
Grantee:Leticia Norma Carpentieri Rodrigues
Support Opportunities: Regular Research Grants