Effects of Different Therapeutic Ultrasound Waveforms on Endothelial Function in Healthy Volunteers: A Randomized Clinical Trial.

The purpose of this study was to determine the effects of different therapeutic 1-MHz ultrasound waveforms on endothelial function before and after cyclooxygenase (COX) inhibition. Forty-two healthy volunteers aged 27.2 ± 3.

Alterations of ectonucleotidases and acetylcholinesterase activities in lymphocytes of Down syndrome subjects: relation with inflammatory parameters.

Background: Subjects with Down syndrome (DS) have an increased susceptibility to infections and autoimmune disorders. ATP, adenosine, and acetylcholine contribute to the immune response regulation, and NTPDase, adenosine deaminase (ADA) and acetylcholinesterase (AChE) are important enzymes in the control of the extracellular levels of these molecules. We evaluated the activities of these enzymes and the cytokine levels in samples of DS individuals.

Stress effects on rats chronically receiving a highly palatable diet are sex-specific.

The stress response is known to lead to behavioral and metabolic changes. Exposure to chronic stress can promote the development of physiological and behavioral dysfunctions, including alterations in feeding behavior. The aim of this study was to verify whether chronic restraint stress alters the consumption of a highly palatable, highly caloric diet (chocolate), chronically offered to the animals.

Oxidative stress and hematologic and biochemical parameters in individuals with Down syndrome.

Objective: To evaluate the levels of thiobarbituric acid reactive substances (TBARS), uric acid, and seric superoxide dismutase and catalase activities, as well as total serum iron, total iron-binding capacity (TIBC), erythrocyte osmotic fragility, and hemograms in people with Down syndrome.

Participants And Methods: The study sampled (July to December 2003) 50 people with Down syndrome and 50 individuals without Down syndrome (control group) matched by age and sex. The levels of TBARS were measured by the TBARS method.