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Endothelial dysfunction – a major mediator of diabetic vascular disease

The vascular endothelium is a multifunctional organ and is critically involved in modulating vascular tone and structure. Endothelial cells produce a wide range of factors that also regulate cellular adhesion, thromboresistance, smooth muscle cell proliferation, and vessel wall inflammation. Thus, endothelial function is important for the homeostasis of the body and its dysfunction is associated with several pa...

Robust Clustering Method for the Detection of Outliers: Using AIC to Select the...

Persister cells in a biofilm treated with a biocide

This study investigated the physiology and behaviour following treatment with ortho-phthalaldehyde (OPA), of Pseudomonas fluorescens in both the planktonic and sessile states. Steady-state biofilms and planktonic cells were collected from a bioreactor and their extracellular polymeric substances (EPS) were extracted using a method that did not destroy the cells. Cell structure and physiology after EPS extractio...

The effects of glutaraldehyde on the control of single and dual biofilms of Bac...

Glutaraldehyde (GLUT) was evaluated for control of single and dual species biofilms of Bacillus cereus and Pseudomonas fluorescens on stainless steel surfaces using a chemostat system. The biofilms were characterized in terms of mass, cell density, total and matrix proteins and polysaccharides. The control action of GLUT was assessed in terms of inactivation and removal of biofilm. Post-biocide action was chara...

Genetic diversity in natural populations of Jacaranda decurrens Cham. determine...

Jacaranda decurrens (Bignoniaceae) is an endemic species of the Cerrado with validated antitumoral activity. The genetic diversity of six populations of J. decurrens located in the State of São Paulo was determined in this study by using molecular markers for randomly amplified polymorphic DNA (RAPD) and amplified fragment length polymorphism (AFLP). Following optimization of the amplification reaction, 10 sele...

A new β-lapachone derivative from Distictella elongata (Vahl) Urb.

The present study describes the structure elucidation of the new β-lapachone type naphthoquinone isolated from the roots of Distictella elongata. Its structure, according to the molecular formula C16H16O6, was identified as 4,7-dihydroxy-10-methoxy-2,2-dimethyl-3,4-dihydro-2H-benzo[h]chromene-5,6-dione. The structure was assigned by spectrometric methods [HRESIMS, 1D NMR (¹H and 13C), and 2D NMR (g-DQF-COS...

Método de detecção de outliers baseado em clustering: escolha do número de nuve...

Robustness of AIC based criterion for selecting the number of clusters

Variabilidade sazonal de constituintes químicos (triterpenos, flavonóides e pol...

Estudou-se a variabilidade química sazonal em Maytenus aquifolium Mart. (Celastraceae), conhecida como "espinheira santa", em exemplares cultivados em Ribeirão Preto, SP, através da análise das substâncias presentes nas folhas, ao longo das quatro estações em dois anos. O teor de fenóis totais variou de 21,96 a 45,92 mg / g (expresso em mg ácido tânico / g folhas secas), de 55,88 a 93,20 mg triterpenos totais /...

On optimal reject rules and ROC curves