Wilkes University

About: Wilkes University is a education organization based out in Wilkes-Barre, Pennsylvania, United States. It is known for research contribution in the topics: Population & Pharmacy. The organization has 616 authors who have published 1032 publications receiving 21050 citations. The organization is also known as: Wilkes & Wilkes College.

Naphthalene uptake by a Pseudomonas fluorescens isolate.

Abstract: Le captage du naphtalene a ete etudie chez des cellules actives de Pseudomonas fluorescens en utilisant du [1- 14 C] naphtalene. Ce captage avait une constante d'affinite (K t ) de Il μM et une vitesse maximale (V max ) de 17 nmol.h -1 .mg -1 de poids sec bacterien. Le captage du naphtalene n'a pas ete observe chez la souche mutante TG-5 qui n'etait pas capable de pousser en utilisant le naphtalene comme seule source de carbone. L'entree du napthtalene dans la cellule etait significativement inhibee (∼90%) par l'azide ou le 2,4-dinitrophenol a des niveaux inhibiteurs de la croissance et elle etait sensible a la presence d'analogues structuraux du naphtalene. Les niveaux intracellulaires d'ATP ne baissaient pas significativement en presence d'azide ou de 2,4-dinitrophenol. L'-α-napthtol inhibait le captage du napthtalene de facon non-competitive avec une K i de 0,041 μM. Les resultats permettent de conclure que la premiere etape dans l'utilisation du napthtalene est son transport a l'interieur de la cellule par une systeme de transport specifique dependant de l'energie.

Changes in abiotic influences on seed plants and ferns during 18 years of primary succession on Puerto Rican landslides

Abstract: Summary 1. Abiotic variables are critical drivers of succession in most primary seres, but how their influence on biota changes over time is rarely examined. Landslides provide good model systems for examining abiotic influences because they are spatially and temporally heterogeneous habitats with distinct abiotic and biotic gradients and post-landslide erosion. 2. In an 18-year study on 6 Puerto Rican landslides, we used structural equation models to interpret the changing effects of abiotic influences (landslide dimensions, slope, aspect, elevation, parent material and related soil properties) on seed plants (density and diversity), tree fern density, scrambling fern cover, canopy openness and soil development (nitrogen, soil organic matter, pH and cation exchange capacity). 3. Seven years after landslide formation, catchment size (the landslide area above the point of measurement) was the key abiotic factor influencing plants. The larger the catchment the greater was the diversity and density of seed plants. Conversely, the smaller the catchment the greater was the density of tree ferns and the cover of scrambling ferns. 4. Eighteen years after landslide formation, landslide slope was the key abiotic influence. The greater the slope, the lower was the density and diversity of seed plants and the greater was the scrambling fern cover. 5. Aspect, particularly east-facing slopes exposed to wind disturbances, positively influenced tree fern densities at both 7 and 18 years and negatively influenced seed plants and scrambling ferns at 18 years. Soils were least developed, that is, had lowest soil nitrogen and organic matter concentrations, after 18 years on steep slopes (like seed plants); soils were most developed near landslide edges, on hurricane-exposed slopes (like tree ferns) and where there were high soil potassium concentrations. 6. Synthesis. Abiotic variables have important influences on plant succession on landslides and the relative influence of different abiotic variables changes with time. Improved predictability of temporal dynamics will rely not only on understanding the effects of initial disturbances and subsequent biological responses but also on the different and changing influences exerted by each abiotic variable.

Possible mesalamine-induced pericarditis: Case report and literature review

Abstract: Pericarditis should be considered in any patient complaining of chest pain and/or dyspnea who is taking a product that contains mesalamine or sulfasalazine. A 41-year-old woman was taking mesalamine 800 mg 3 times/day for 3 weeks before hospital admission. She complained of sharp, pleuritic chest pain that radiated down both arms and increased in intensity when lying down. She was diagnosed with pericarditis based on clinical presentation and electrocardiogram findings. Differential diagnoses for myocardial infarction, systemic lupus erythematosus, and viral or bacterial causes were ruled out based on subjective and objective data. Mesalamine-induced pericarditis was considered on hospital day 2, and the drug was discontinued at discharge on day 3. Clinicians should be aware of this potential drug-related complication, as the relationship between mesalamine or sulfasalazine and pericarditis has been reported rarely in the literature.

Effect of Music and Auditory Stimuli on Secretory Immunoglobulin a (IGA)

Abstract: This study investigated the effects of music and an auditory stimulus on immunoglobulin A (IgA). Groups of college students (N = 66) were exposed to one of four conditions: a 30-min, tone/click presentation; 30 min. of silence; 30 min, of a Muzak tape referred to as "Environmental Music"; and a 30-min. radio broadcast comparable in musical style. Saliva samples collected before and after each 30-min. treatment were assayed for IgA. Analysis indicated significant increases in IgA for the Muzak condition (n = 20) but not for any of the other conditions. Possible mechanisms of action and implications for immunocompetence are discussed.