Molecular metal complexes catalyze aerobic oxidation reactions via redox cycling at the metal center to effect sequential activation of O and the substrate. Metal surfaces can catalyze the same transformations by coupling independent half-reactions for oxygen reduction and substrate oxidation mediated via the exchange of band-electrons. Metal- and nitrogen-doped carbons (MNCs) are promising catalysts for aerobic oxidation that consist of molecule-like active sites embedded in conductive carbon hosts.
View Article and Find Full Text PDFTwo-electron, one-proton reactions of a family of [CoCp(dxpe)(NCCH)] complexes (Cp = cyclopentadienyl, dxpe = 1,2-bis(di(aryl/alkyl)phosphino)ethane) form the corresponding hydride species [HCoCp(dxpe)] (dxpe = dppe (1,2-bis(diphenylphosphino)ethane), depe (1,2-bis(diethylphosphino)ethane), and dcpe (1,2-bis(dicyclohexylphosphino)ethane)) through a stepwise proton-coupled electron transfer process. For three [CoCp(dxpe)(NCCH)] complexes, peak shift analysis was employed to quantify apparent proton transfer rate constants from cyclic voltammograms recorded with acids ranging 22 p units. The apparent proton transfer rate constants correlate with the strength of the proton source for weak acids, but these apparent proton transfer rate constants curiously plateau () as the reaction becomes increasingly exergonic.
View Article and Find Full Text PDFThis study aimed to further understand typologies of trafficking that occur in the home, by an individual's intimate partner (IP) or family members and this overlap with extant knowledge on perpetrator manipulation via the Power and Control Wheel. Inductive and deductive techniques were used to analyze secondary data from a federally funded anti-trafficking program in a Midwest metropolitan area recorded between 2008 and 2017. Cases were included if there was indication of sex or labor exploitation initiated by an IP, family member, or other in the domestic setting via elements of abuse; 59 cases of 213 met this criteria.
View Article and Find Full Text PDFThe proton-coupled electron transfer (PCET) oxidation of p-aminophenol in acetonitrile was initiated via stopped-flow rapid-mixing and spectroscopically monitored. For oxidation by ferrocenium in the presence of 7-(dimethylamino)quinoline proton acceptors, both the electron transfer and proton transfer components could be optically monitored in the visible region; the decay of the ferrocenium absorbance is readily monitored (λmax = 620 nm), and the absorbance of the 2,4-substituted 7-(dimethylamino)quinoline derivatives (λmax = 370-392 nm) red-shifts substantially (ca. 70 nm) upon protonation.
View Article and Find Full Text PDFBull Am Coll Surg
February 2016
Ann Allergy Asthma Immunol
February 2015
Background: Allergic rhinitis (AR) is an inflammatory condition of the nasal mucosa characterized by symptoms of nasal discharge, itching, sneezing, and congestion. Ocular symptoms are commonly associated with AR and include itching or burning, tearing or watering, and redness. Intranasal corticosteroids are a mainstay of treatment, and their effect on nasal symptoms is well described.
View Article and Find Full Text PDFA nasal aerosol formulation of ciclesonide with a hydrofluoroalkane propellant (CIC-HFA) is currently in development for treatment of allergic rhinitis (AR). This study evaluated the efficacy and safety of once-daily administration of CIC-HFA 74 or 148 micrograms compared with placebo in patients with seasonal AR (SAR) from mountain cedar pollen. Patients ≥12 years of age with a ≥2-year history of SAR from mountain cedar pollen were randomized in a placebo-controlled, double-blind, parallel group, multicenter study to CIC-HFA 74 micrograms, CIC-HFA 148 micrograms, or placebo once daily in the morning for 2 weeks.
View Article and Find Full Text PDFBackground: A previous study with azelastine nasal spray in patients with seasonal allergic rhinitis (SAR) demonstrated that increasing the azelastine concentration from 0.1% to 0.15% allowed for once-daily dosing without increasing the incidence of adverse effects.
View Article and Find Full Text PDFAzelastine nasal spray is commercially available as a 0.1% w/v solution and is recommended for twice-daily dosing. Increasing the azelastine concentration to 0.
View Article and Find Full Text PDFFew randomized studies have compared the H1-receptor antagonists loratadine and ebastine in seasonal allergic rhinitis (SAR) patients. The objective of this study was to compare the efficacy and safety of ebastine 20 mg (E20), ebastine 10 mg (E10), loratadine 10 mg (L10), and placebo (P), once daily, in controlling symptoms of SAR over a 4-week period. This was a double-blind, placebo-controlled, randomized, parallel-group study.
View Article and Find Full Text PDFBackground: Few randomized studies have compared loratadine to ebastine in the symptomatic treatment of seasonal allergic rhinitis (SAR) patients.
Methods: This double-blind, placebo-controlled, randomized, parallel-group, comparative trial compared the efficacy and safety of ebastine 20 mg (E20), loratadine 10 mg (L10) and placebo (P), administered once daily, in the control of SAR symptoms over a 2-week period. An additional 2-week treatment period was included in order to check sustained efficacy and tolerability.
Budesonide inhalation powder via the dry-powder multidose inhaler Turbuhaler (budesonide Turbuhaler) has been shown to improve lung function and symptoms in adults with asthma. In this double-blind, placebo-controlled, multicenter trial, we evaluated the effects of once-daily budesonide Turbuhaler on health-related quality of life (HRQL) in 177 adults (aged 18-70 years) with non-steroid-dependent asthma. Patients were randomized to receive budesonide Turbuhaler (400 micrograms) once daily or placebo for 12 weeks.
View Article and Find Full Text PDFBackground: The safety and efficacy of intranasal corticosteroids for the treatment of allergic rhinitis is well documented in the literature. Additionally, an expert panel has concluded that intranasal corticosteroids are the first line of therapy when obstruction is a major component of rhinitis. Montelukast is a leukotriene receptor antagonist recently approved for the treatment of seasonal allergic rhinitis (SAR).
View Article and Find Full Text PDFObjective: The AERx insulin Diabetes Management System (AERx iDMS) (Aradigm, Hayward, CA) delivers an aerosol of liquid human insulin to the deep lung for systemic absorption. This study examined the effects on pulmonary function, pharmacokinetics, and pharmacodynamics of inhaled insulin in asthmatic and nonasthmatic subjects without diabetes.
Research Design And Methods: A total of 28 healthy and 17 asthmatic (forced expiratory volume during the first second [ FEV(1)] 50-80% of predicted value) subjects were enrolled in a two-part, open-label trial.
Although allergic rhinitis is commonly associated most with symptoms of nasal congestion, rhinorrhea, sneezing, and itching, the symptom of sinus pain and pressure often prompts the patient to seek medical attention. The effect of fluticasone propionate on this symptom has not been studied. The purpose of this study was to compare the efficacy and safety of fluticasone propionate aqueous nasal spray to placebo vehicle in the treatment of patients with sinus pain and pressure arising from allergic rhinitis.
View Article and Find Full Text PDFAnn Allergy Asthma Immunol
June 2001
Background: Previous studies have demonstrated the efficacy and safety of twice-daily budesonide Turbuhaler (Pulmicort Turbuhaler, AstraZeneca, Wilmington, DE) for the treatment of mild to severe asthma.
Objective: To compare the efficacy and safety of budesonide Turbuhaler administered once daily each morning with placebo in inhaled corticosteroid-naive adults with persistent asthma.
Methods: In this randomized, double-blind, placebo-controlled, multicenter study, 177 adults (aged 18 to 70 years) received placebo or once-daily budesonide Turbuhaler (400 microg) for 12 weeks.