scholarly journals TiO2 and Active Coated Glass Photodegradation of Ibuprofen

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 560
Author(s):  
Samer Khalaf ◽  
Jawad H. Shoqeir ◽  
Filomena Lelario ◽  
Sabino A. Bufo ◽  
Rafik Karaman ◽  
...  

Commercial non-steroidal anti-inflammatory drugs (NSAIDs) are considered as toxic to the environment since they induce side effects when consumed by humans or aquatic life. Ibuprofen is a member of the NSAID family and is widely used as an anti-inflammatory and painkiller agent. Photolysis is a potentially important method of degradation for several emerging contaminants, and individual compounds can undergo photolysis to various degrees, depending on their chemical structure. The efficiency oftitanium dioxide (TiO2) and photocatalysis was investigated for the removal of ibuprofen from the aquatic environment, and the performance of these different processes was evaluated. In heterogeneous photocatalysis, two experiments were carried out using TiO2 as (i) dispersed powder, and (ii) TiO2 immobilized on the active surface of commercial coated glass. The kinetics of each photoreaction was determined, and the identification of the photoproducts was carried out by liquid chromatography coupled with Fourier-transform ion cyclotron resonance mass spectrometry (LC-FTICR MS). The overall results suggest that the TiO2 active thin layer immobilized on the glass substrate can avoid recovery problems related to the use of TiO2 powder in heterogeneous photocatalysis and may be a promising tool toward protecting the environment from emerging contaminants such as ibuprofen and its derivatives.

Author(s):  
Alejandro Mejía-García ◽  
Hariz Islas-Flores ◽  
Leobardo Manuel Gómez-Oliván ◽  
Nely SanJuan-Reyes ◽  
José Mario Ortega-Olvera ◽  
...  

2018 ◽  
Vol 40 (18) ◽  
pp. 2436-2445 ◽  
Author(s):  
Minerva Villanueva-Rodríguez ◽  
Ricardo Bello-Mendoza ◽  
Aracely Hernández-Ramírez ◽  
Edgar J. Ruiz-Ruiz

1988 ◽  
Vol 44 (5) ◽  
pp. 531-539 ◽  
Author(s):  
Josh J Dixey ◽  
Faruq H Noormohamed ◽  
Jenender S Pawa ◽  
Ariel F Lant ◽  
Derrick A Brewerton

Microbiology ◽  
2020 ◽  
Vol 89 (2) ◽  
pp. 148-163
Author(s):  
E. A. Tyumina ◽  
G. A. Bazhutin ◽  
A. d. P. Cartagena Gómez ◽  
I. B. Ivshina

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Claudia Alicia Castillo-Miranda ◽  
Ana Beatriz Morales-Cepeda ◽  
Carlos Fernando Castro-Guerrero ◽  
Homero Salas-Papayanopolos ◽  
Hugo Alberto Velasco-Ocejo ◽  
...  

The crystallization of nonsteroidal anti-inflammatory drug [2-(4-isobutyl-phenyl) propionic acid] ibuprofen (IBP) on a hydroxypropyl cellulose (HPC) and polyacrylamide (PAAm) gel was studied as well as the release kinetics of the drug. The IBP was crystallized on the gel surface of HPC/PAAm. It had a prismatic shape and the growth was made in an aqueous medium; the crystallinity grade of the gels HPC/PAAm and HPC/PAAm-IBU increased to 68% and to 58%, respectively. The release of IBP is performed by two means: by a non-Fickian diffusion process and by relaxation of the chains of the gel; without regard to temperature and the diffusion media, this correlates with the lower critical solution temperature (LCST) of the proposed gel. This polymer matrix provides an option for releasing nonsteroidal anti-inflammatory drugs in a temperature range of 35–39°C. Korsmeyer and Peppas mathematical model was simulated for data releases, statistically significant at 95% confidence level.


1978 ◽  
Vol 6 (4) ◽  
pp. 312-316 ◽  
Author(s):  
G Sacchetti ◽  
G C Ferrati ◽  
L Parrinello ◽  
A Salami

A double-blind, controlled clinical trial is described in which a total of forty hospital in-patients suffering from severe post-operative pain were randomly allocated to treatment with one of two non-steroidal anti-inflammatory drugs, namely, either indoprofen which has a short half-life (two hours) or naproxen which has a long half-life (thirteen hours). The drugs were administered orally on a single-dose-only basis. The doses used in this way were 300 mg of indoprofen or 250 mg of naproxen. Patients scored the severity of their pain on a five-point scale and these scores were recorded prior to and at fixed time intervals up to eight hours following administration of medication. No significant differences emerged between the two test drugs and the duration of the response was also found to be similar for the two compounds despite their very different plasma half-life values.


Pharmaceutics ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1620
Author(s):  
Ana Roda ◽  
Alexandre Paiva ◽  
Ana Rita C. Duarte

Most nonsteroidal anti-inflammatory drugs (NSAIDs) present poor aqueous solubility, impairing their efficiency in physiological media. In this context, Low Transition Temperature Mixtures (LTTMs) are a promising platform to overcome drugs’ poor solubility, forming therapeutic liquid formulations. In this work, the LTTMs of citric acid:L-arginine:water (C:A:W) and glycerol:sorbitol (G:S) were studied in terms of their features and assessed in terms of their ability to increase the solubility of six NSAIDs in physiological media. The physicochemical properties of LTTMs were characterized by state-of-art techniques commonly used for these systems. The cytotoxicity of G:S was also evaluated in L929 mouse fibroblasts and the viscosity, polarity, and pH properties of the studied mixtures were related to the solubility of NSAIDs. The pH and polarity were the parameters that most influenced the drugs’ solubility. Ibuprofen, naproxen, ketoprofen, indomethacin, and flurbiprofen did not present any solubility improvement in the formulations tested. However, concentrated mixtures of C:A:W or G:S in the physiologic-mimicked media (PBS) rendered a celecoxib solubility 4 and 5 times higher than PBS, respectively. These therapeutic liquid formulations of celecoxib in C:A:W or G:S can be a promising tool to increase celecoxib’s therapeutic efficiency in local applications.


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