Development of a nanotechnological hydrogel containing desonide nanocapsules in association with acai oil: design and evaluation.

Nanotechnological products have been used as strategies to optimize the therapy and minimize the side effects of topical corticoids. The objective of this study was to develop hydrogels by the addition of sclerotium gum to the suspensions of desonide-loaded açai oil-based nanocapsules and to study their biological effect using an animal model of acute skin inflammation. The hydrogels presented a pH compatible with topical application (4.

Development of an HPLC-UV Method to Assay Empagliflozin Tablets and Identification of the Major Photoproduct by Quadrupole Time-of-Flight Mass Spectrometry.

Diabetes is a set of metabolic disorders that affect >400 million individuals worldwide. Empagliflozin belongs to the gliflozin class and is used orally to treat type 2 diabetes. In this study, a simple stability-indicating HPLC-UV method was developed to assay empagliflozin tablets and its main photoproduct was identified by high-resolution mass spectrometry.

Development of doxycycline hyclate suppositories and pharmacokinetic study in rabbits.

Doxycycline hiclate is a broad spectrum antibiotic widely used in human and veterinary medicine. The inability to perform the parenteral administration of drugs and the lack of oral preparations can be mentioned as difficulties in the treatment of animals in the domestic environment. In this scenario, the aim of this study was to investigate the bioavailability of the drug by rectal route, to propose a potential suppository formulation containing 25 mg of doxycycline as an alternative to the available injectable formulations.

Desonide nanoencapsulation with açai oil as oil core: Physicochemical characterization, photostability study and in vitro phototoxicity evaluation.

This study aimed to develop Eudragit® RL 100 nanocapsules loaded with desonide (DES) using açai oil (AO) or medium chain triglycerides (MCT) as oil core. Pre-formulation study showed that AO and MCT are suitable for nanocapsules preparation. The nanocapsules prepared with AO and MCT presented mean particle size around 165 and 131 nm, respectively; polydispersity index values <0.

Capillary zone electrophoresis method to assay tipranavir capsules and identification of oxidation product and organic impurity by quadrupole-time of flight mass spectrometry.

Tipranavir (TPV) is one of the most recently developed protease inhibitors (PI) and it is specially recommended for treatment-experienced patients who are resistant to other PI drugs. In this work, a simple and friendly environmental CZE stability-indicating method to assay TPV capsules was developed and two TPV organic impurities were identified by high resolution mass spectrometry (HRMS). The optimized analytical conditions were: background electrolyte composed of sodium borate 50mM, pH 9.

In vitro and in vivo evaluation of a desonide gel-cream photostabilized with benzophenone-3.

Context: Our group previously reported the photoinstability of some desonide topical commercial formulations under direct exposure to UVA radiation.

Objective: This study aimed to prepare and characterize a gel-cream containing desonide, with greater photostability than the commercial gel-cream (C-GC). Benzophenone-3 (BP-3) was used as a photostabilizing agent.

Dithranol-loaded lipid-core nanocapsules improve the photostability and reduce the in vitro irritation potential of this drug.

Dithranol is a very effective drug for the topical treatment of psoriasis. However, it has some adverse effects such as irritation and stain in the skin that make its application and patient adherence to treatment difficult. The aims of this work were to prepare and characterize dithranol-loaded nanocapsules as well as to evaluate the photostability and the irritation potential of these nanocarriers.

Investigation of β-cyclodextrin-norfloxacin inclusion complexes. Part 1. Preparation, physicochemical and microbiological characterization.

Introduction: Drugs classified as class IV by the Biopharmaceutical Classification System present significant problems in relation to effective oral administration. In the case of antibiotics, the subsequently high doses required can enhance the emergence of microorganism resistance and lead to a low rate of patient treatment adherence.

Objective: In an attempt to improve physicochemical properties and microbiological activity of norfloxacin, the aim of this study was to investigate different methods (coevaporation, kneading followed by freeze-drying or spray-drying) to obtain complexes of norfloxacin and different cyclodextrins.

Clotrimazole-loaded Eudragit® RS100 nanocapsules: preparation, characterization and in vitro evaluation of antifungal activity against Candida species.

Clotrimazole is a common choice for the treatment of vulvovaginal infections, but its low solubility and some side effects pose a challenge to its application. This work evaluated the feasibility to formulate clotrimazole-loaded cationic nanocapsules using Eudragit® RS100 and medium chain triglycerides as polymer and oily core, respectively, by the method of interfacial deposition of a preformed polymer. The physicochemical characteristics of nanocapsule formulations were evaluated at 0 day and 60 days after preparation.

Development and validation of a stability-indicating LC method for the assay of lodenafil carbonate in tablets.

A stability-indicating liquid chromatographic method has been developed for the quantitative determination of lodenafil carbonate in tablets. The method employs a Synergi Fusion C18 column (250 × 4.6 mm, i.

Treatment of invasive fungal infections: stability of voriconazole infusion solutions in PVC bags.

Voriconazole is a novel broad-spectrum antifungal drug, employed in the treatment of invasive fungal infections, and represents an alternative to amphotericin B treatment. The manufacturer recommends that any unused reconstituted product should be stored at 2 masculineC to 8 masculineC, for no more than 24 h, but no recommendations about i.v.

Comparison of microbiological and UV-spectrophotometric assays for determination of voriconazole in tablets.

Two methods have been developed for the determination of voriconazole, a new antifungal drug, in tablets. A UV method, with detection at 255 nm, was compared with a diffusion agar bioassay, which used Sacharomyces cerevisiae ATCC 2601 as the assay organism. The developed methods were linear in the range of 3.

2,5-Hexanedione inhibits rat brain acetylcholinesterase activity in vitro.

A number of C(4)-C9 aliphatic ketones, including 2,5-hexanedione (2,5-HD), are acetylcholinesterase (AChE; EC 3.1.1.