Naproxen was studied by classical thermoanalytical methods, namely sublimation calorimetry, solution calorimetry and the solubility method. Temperature dependence of a saturated vapor pressure was obtained and the sublimation enthalpy, deltaHsub(0) and entropy, deltaSsub(0) and their relative fraction of the total process were calculated. These parameters yielded for naproxen were compared to the respective data of other naphthalene derivatives. The crystal lattice energy of naproxen was calculated by two force fields (Gavezzotti et al. and Mayo et al.) and compared to the experimental data. Contributions of different motifs of the naproxen molecule to the total packing energy were analyzed. The Gibbs energy of solvation as well as enthalpic and entropic terms thereof in aliphatic alcohols have been studied for naproxen, and compared to model substances and other non-steroid anti-inflammatory drugs (benzoic acid, diflunisal and flurbiprofen). The major driving force of the solvation process is the enthalpy. The respective contributions of the specific and the non-specific solvation interactions in terms of absolute and relative values have been investigated.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.ejpb.2003.10.021 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Multigenerational effects of individual and binary mixtures of two commonly used NSAIDs on Daphnia carinata.
Ecotoxicology
January 2025
Ecotoxicology Research group, School of Science, RMIT University, Melbourne, VIC, Australia.
Pharmaceuticals, including non-steroidal anti-inflammatory drugs (NSAIDs) like ibuprofen (IBU) and naproxen (NPX), are widely used for medical purposes but have also become prevalent environmental contaminants. However, there is limited understanding of their effects on aquatic organisms, especially regarding multigenerational and mixture exposures. This study aimed to evaluate the toxicological impacts of ibuprofen and naproxen, individually and in combination, on three generations of Daphnia carinata, a freshwater organism.
View Article and Find Full Text PDFNovel Data Fusion Strategy for Second-Order Data: Multivariate Curve Resolution for the Determination of Pharmaceuticals by Means of Fluorimetric Measurements.
Anal Chem
January 2025
Laboratorio de Investigación y Desarrollo en Métodos Analíticos (LIDMA), Facultad de Ciencias Exactas, Universidad Nacional de La Plata (UNLP), Calle 49 y 115 (B1900AJL), La Plata 1900, Argentina.
A new strategy is proposed for second-order data fusion based on the simultaneous modeling of two data sets using the multivariate curve resolution-alternating least-squares (MCR-ALS) model, applying a new constraint during the ALS stage, called "Proportionality of Scores". This approach allows for the fusion of data from different sources, without requiring common dimensionality, and enables the application of specific constraints to each data set. This strategy was applied to the determination of five pharmaceutical contaminants (naproxen, danofloxacin, ofloxacin, sarafloxacin, and enoxacin) in environmental water samples, by fusing two sets of excitation-emission fluorescence matrices, measured before and after photochemical derivatization.
View Article and Find Full Text PDFImpact of vitamin C on the reduction of opioid consumption for acute musculoskeletal pain: A double-blind randomized control pilot study.
PLoS One
December 2024
Study Center in Emergency Medicine, Hôpital du Sacré-Coeur de Montréal (CIUSSS du Nord-de-l'Île de-Montréal), Montréal, Québec, Canada.
Introduction: Recent evidence has shown that vitamin C has analgesic and opioid sparing properties in immediate postoperative context. However, this has never been studied for acute musculoskeletal (MSK) emergency department (ED) injuries. The aim of this pilot study is to evaluate the feasibility of conducting a randomized placebo-controlled study to determine the opioid sparing and analgesic effect of vitamin C compared to placebo, in acute MSK injured ED patients.
View Article and Find Full Text PDFLong-acting injectable in situ forming implants: Impact of polymer attributes and API.
Int J Pharm
December 2024
Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA. Electronic address:
Poly(DL-lactide-co-glycolide) (PLGA) and N-methyl-2-pyrrolidone (NMP)-based in situ forming implants are liquid formulations that solidify through phase separation following injection into the body. Drug is dissolved or suspended in the final formulation liquid prior to injection. Depending on the polymers used, the depots formed can deliver drug over different periods of time.
View Article and Find Full Text PDFIs perioperative use of a combination of pregabalin and naproxen superior to naproxen only in reducing pain in ankle fractures? A prospective, randomized, multicenter study.
J Orthop Surg Res
December 2024
Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, 03722, Korea.
Purpose: To compare the analgesic efficacy, adverse effects, and long-term functional outcomes of perioperative naproxen alone versus naproxen with pregabalin for treating pain in ankle fractures.
Methods: This study included 70 patients who underwent operative fixation of rotatory ankle fractures. Group A received naproxen 500 mg only, and Group B received naproxen 500 mg with pregabalin 75 mg 2-hour before surgery and 12 hourly for 14 days thereafter.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!