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Minerva Villanueva-Rodríguez, Ricardo Bello-Mendoza, Aracely Hernández-Ramírez, Edgar J Ruiz-Ruiz
Non-steroidal anti-inflammatory drugs (NSAID) are compounds frequently found in municipal wastewater and their degradation by conventional wastewater treatment plants (WWTP) is generally incomplete. This study compared the efficiency of two advanced oxidation processes, namely heterogeneous photocatalysis (HP) and electro-Fenton (EF), in the degradation of a mixture of common NSAID (diclofenac, ibuprofen and naproxen) dissolved in either deionized water or effluent from a WWTP. Both processes were effective in degrading the NSAID mixture and the trend of degradation was as follows, diclofenac>naproxen>ibuprofen...
February 19, 2018: Environmental Technology
Xiangying Yu, Man-Chu Chau, Wai Kit Tang, Chi-Kit Siu, Zhong-Ping Yao
Naproxen is one of the most consumed non-steroidal anti-inflammatory drugs and marketed as S-naproxen since R-naproxen is hepatotoxic. In this study, chiral recognition of naproxen has been investigated by tandem mass spectrometry (MS/MS). Among all diastereomeric complexes formed between naproxen and the examined chiral selectors, including cyclodextrins (α/β/γ-CD), modified phenylalanines (N-acetyl-phenylalanine, N-t-butoxycarbonyl-phenylalanine, N-9-fluorenylmethyloxycarbonyl-phenylalanine), amino acids (Trp, Phe, Tyr, His), glucose, tartaric acid and vancomycin, a novel binuclear metal bound diastereomeric complexes [(M(II))2 (S/R-Naproxen)(L-His)2 -3H]+ (M = Cu, Ni or Co with Cu being the best) could allow effective identification of the absolute configuration of naproxen and determination of its enantiomeric excess (ee) through MS/MS analysis...
February 17, 2018: Analytical Chemistry
Firozeh Torki, Hossein Faghihian
This research was aimed to prepare a magnetically photocatalyst enabling to degrade pharmaceutical wastewater and detoxification of pollutant such as naproxen, by visible light irradiation. The nano-sized NiS and NiO photocatalysts exhibit higher reactivity than their micro-sized counterparts but separation of the used photocatalyst from the degradation solution is hard and imperfect. To remove this difficulty, magnetic polypyrrole core-shell (Fe3O4@PPY) was synthesized and employed as catalyst support. The magnetization property of the synthesized photocatalysts measured by VSM technique indicated that the photocatalysts were sufficiently magnetized to be readily separated from degradation solution by use of external magnetic field...
February 14, 2018: Photochemistry and Photobiology
Mark H Ebell
No abstract text is available yet for this article.
December 15, 2017: American Family Physician
Sun-Young Jung, Eun Jin Jang, Seoung Wan Nam, Hyuk Hee Kwon, Seul Gi Im, Dam Kim, Soo-Kyung Cho, Dalho Kim, Yoon-Kyoung Sung
OBJECTIVES: To explore the relative efficacy of oral pharmacologic interventions in the treatment of knee OA. METHODS: A systematic literature review was conducted using the MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials databases to identify trials conducted in patients with knee OA with a minimum 6 weeks of follow-up. The standardized mean differences of the change from baseline to week 6 in Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain between the treatment groups were estimated using Bayesian random-effects network meta-analyses...
February 12, 2018: Modern Rheumatology
William B White, Robert A Kloner, Dominick J Angiolillo, Michael H Davidson
Over-the-counter analgesics are used globally for the relief of acute pain. Although effective, these agents can be associated with adverse effects that may limit their use in some people. In the early 2000s, observations from clinical trials of prescription-strength and supratherapeutic doses of nonselective and cyclooxygenase-2-selective nonsteroidal anti-inflammatory drugs (NSAIDs) raised safety concerns regarding the risk of cardiovascular adverse effects with the use of these medications. Subsequently, the US Food and Drug Administration mandated additional study of the cardiovascular safety of NSAIDs for a more comprehensive understanding of their risk...
March 2018: Journal of Cardiovascular Pharmacology and Therapeutics
Monika Gasztych, Anna Kotowska, Witold Musiał
Poly-N-isopropylacrylamide (polyNIPA) is an extensively studied polymer in the field of controlled drug delivery. PolyNIPA contains carbonyl and amide groups along a hydrophobic chain. In an aqueous environment, crosslinked polyNIPA forms a gel characterized by a reversible volume phase transition temperature (VPTT), in response to changes in the external environment excited by the temperature factor. NIPA-based polymers were synthesized by a surfactant-free precipitation polymerization (SFPP) method at a temperature of 70 °C using the free radical initiator potassium persulfate (KPS) and at 35 °C using redox initiator system KPS with N,N,N',N'-tetramethylethylenediamine (TEMED)...
February 8, 2018: Materials
Nicholas Moore, James M Scheiman
Over-the-counter (OTC) analgesics are routinely used worldwide for self-management of various painful conditions. Despite this, there has been little in-depth review of the safety of non-aspirin analgesics at OTC doses. This paper reviews the available literature on the gastrointestinal (GI) and hepatic safety of non-aspirin OTC analgesics, including nonsteroidal anti-inflammatory drugs (NSAIDs; ibuprofen, ketoprofen, diclofenac, and naproxen) and acetaminophen; safety in overdose is also reviewed. Each non-aspirin OTC analgesic has a distinct adverse event (AE) profile, with GI AE rates for OTC dosing in one study ranging from 37% for diclofenac to 7...
February 8, 2018: Postgraduate Medicine
Caridad Pontes, Josep Ramon Marsal, Josep Maria Elorza, Maria Aragón, Daniel Prieto-Alhambra, Rosa Morros
PURPOSE: Recent controversies on the safety profiles of opioids and paracetamol (acetaminophen) have led to changes in clinical guidance on osteoarthritis (OA) management. We studied the existing association between the use of different OA drug therapies and the risk for acute coronary events. METHODS: A cohort of patients with clinically diagnosed OA (according to ICD-10 codes) was identified in the SIDIAP database. Within the cohort, cases with incident acute coronary events (acute myocardial infarction or unstable angina) between 2008 and 2012 were identified using ICD-10 codes and data from hospital admission...
February 2, 2018: Clinical Therapeutics
Alisha Couto, Emanuel Troullos, Jennifer Moon, Alberto Paredes-Diaz, Robert An
OBJECTIVES: Current osteoarthritis therapies aim to alleviate pain and maintain joint function. Non-prescription oral non-steroidal anti-inflammatory drugs are frequently used alone for pain relief in osteoarthritis. This post hoc pooled analysis evaluated the analgesic efficacy and safety of two non-prescription doses of naproxen sodium for short-term use in patients with osteoarthritis of the knee or hip. A separate subgroup analysis of older patients who were administered a lower dose of naproxen sodium was performed...
February 2, 2018: Current Medical Research and Opinion
M Magierowski, K Magierowska, M Surmiak, M Hubalewska-Mazgaj, S Kwiecien, J L Wallace, T Brzozowski
Clinical use of non-steroidal anti-inflammatory drugs (NSAIDs), such as aspirin or naproxen is limited due to the gastrotoxicity evoked by these compounds. Endogenous hydrogen sulfide (H2s) and delivered via an H2s donor have been shown to play important role in the maintenance of gastric mucosal integrity. This study aimed to compare the effects of naproxen and an H2s-releasing naproxen derivative (ATB-346) on gastric lesion induction by water immersion and restraint stress (WRS), the alterations in gastric blood flow (GBF) and the influence of these drugs on systemic inflammation...
October 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
Bobeck S Modjtahedi, Donald S Fong, Eric Jorgenson, Stephen K Van Den Eeden, Virginia Quinn, Jeffrey S Slezak
PURPOSE: To describe the relationship between the incidence of age-related macular degeneration (AMD) and non-steroidal anti-inflammatory drug (NSAIDs) use. DESIGN: Prospective cohort study. METHODS: This study consisted of participants in the California Men's Health Study. Those who completed surveys in 2002-2003 and 2006 were included. Men who self-reported use of aspirin, ibuprofen, naproxen, valdecoxib, celecoxib and/or rofecoxib at least three days per week were considered NSAID users...
January 19, 2018: American Journal of Ophthalmology
Jie Yu, Haimei Lu, Jia Zhou, Zhijun Xie, Chengping Wen, Zhenghao Xu
OBJECTIVES: To evaluate the efficacy and safety of oral prednisolone in the treatment of acute gout compared with non-steroidal anti-inflammatory drugs (NSAIDs). METHODS: A comprehensive search of databases in both Chinese and English was performed. Data from the selected studies were extracted and analyzed independently by two authors. RESULTS: Three double-blind, randomized, controlled trials were included in the final analysis, with a total of 584 patients...
January 22, 2018: Inflammopharmacology
Yadong Xu, Alvaro Goyanes, Yuwei Wang, Andrew J Weston, Po-Wah So, Carlos F G C Geraldes, Andrew M Fogg, Abdul W Basit, Gareth R Williams
The potential of the layered gadolinium hydroxide (LGdH) [Gd2(OH)5]Cl·yH2O (LGdH-Cl) for simultaneous drug delivery and magnetic resonance imaging was explored in this work. Three non-steroidal anti-inflammatory drugs (diclofenac [dic], ibuprofen [ibu], and naproxen [nap]) were intercalated into LGdH-Cl for the first time, using three different routes (ion exchange intercalation, coprecipitation, and exfoliation-self-assembly). X-ray diffraction, elemental microanalysis and IR spectroscopy confirmed successful incorporation of the drug into the interlayer spaces of the LGdH in all cases...
January 22, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
David Bär, Heiko Debus, Sina Brzenczek, Wolfgang Fischer, Peter Imming
Near-infrared spectroscopy is frequently used by the pharmaceutical industry to monitor and optimize several production processes. In combination with chemometrics, a mathematical-statistical technique, the following advantages of near-infrared spectroscopy can be applied: It is a fast, non-destructive, non-invasive, and economical analytical method. One of the most advanced and popular chemometric technique is the partial least square algorithm with its best applicability in routine and its results. The required reference analytic enables the analysis of various parameters of interest, for example, moisture content, particle size, and many others...
January 6, 2018: Journal of Pharmaceutical and Biomedical Analysis
Shahram Emami, Mohammadreza Siahi-Shadbad, Mohammad Barzegar-Jalali, Khosro Adibkia
OBJECTIVES: This study employed electrospray deposition (ESD) for simultaneous synthesis and particle engineering of cocrystals. SIGNIFICANCE: Exploring new methods for the efficient production of cocrystals with desired particle properties is an essential demand. METHODS: The possibility of cocrystal formation by ESD was examined for indomethacin-saccharin, indomethacin-nicotinamide, naproxen-nicotinamide, and naproxen-iso-nicotinamide cocrystals...
January 18, 2018: Drug Development and Industrial Pharmacy
Lin Wang, Xuefeng Shi, Yaqian Wu, Jian Zhang, Yuejun Zhu, Jinben Wang
A novel supramolecular hydrogel was designed and constructed by molecular self-assembly of a cationic gemini surfactant, 1,3-bis(N,N-dimethyl-N-cetylammonium)-2-propylacrylate dibromide (AGC16), and an anionic aromatic compound, trisodium 1,3,6-naphthalenetrisulfonate (NTS). Owing to its unique structure, the hydrogel (abbreviated as AGC16/NTS) has the potential to be used as a multifunctional drug delivery system. The structure and properties of AGC16/NTS were characterized by rheological measurements, differential scanning calorimetry, variable-temperature 1H nuclear magnetic resonance, ultraviolet-visible spectroscopy, variable-temperature fluorescence emission spectroscopy, cryogenic scanning electron microscopy, transmission electron microscopy and X-ray diffraction methods...
January 15, 2018: Soft Matter
Tahira Devji
No abstract text is available yet for this article.
January 4, 2018: Journal of the American Dental Association
Hawraa Ayoub, Thibault Roques-Carmes, Olivier Potier, Bachar Koubaissy, Steve Pontvianne, Audrey Lenouvel, Cédric Guignard, Emmanuel Mousset, Hélène Poirot, Joumana Toufaily, Tayssir Hamieh
In this paper, for the first time, faujasite Y zeolite impregnated with iron (III) was employed as a catalyst to remove a real cocktail of micropollutants inside real water samples from the Meurthe river by the means of the heterogeneous photo-Fenton process. The catalyst was prepared by the wet impregnation method using iron (III) nitrate nonahydrate as iron precursor. First, an optimization of the process parameters was conducted using phenol as model macro-pollutant. The hydrogen peroxide concentration, the light wavelength (UV and visible) and intensity, the iron loading immobilized, as well as the pH of the solution were investigated...
January 11, 2018: Environmental Science and Pollution Research International
Sarah J Wolfson, Abigail W Porter, Julia K Campbell, Lily Y Young
Over-the-counter pharmaceutical compounds can serve as microbial substrates in wastewater treatment processes as well as in the environment. The metabolic pathways and intermediates produced during their degradation, however, are poorly understood. In this study, we investigate an anaerobic wastewater community that metabolizes naproxen via demethylation. Enriched cultures, established from anaerobic digester inocula receiving naproxen as the sole carbon source, transformed naproxen to 6-O-desmethylnaproxen (DMN) within 22 days...
January 11, 2018: Microbial Ecology
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