purpose to verify whether active recovery (ar) applied after a kickboxing match resulted in better performance in anaerobic tests when compared to passive recovery (pr). methods eighteen kickboxers volunteered to participate on a kickboxing match preceded and followed by anaerobic tests: squat jump (sj), the counter movement jump (cmj) and the upper-body wingate test. blood lactate (bl), heart ...

Transepithelial salt and fluid secretion mediated by cAMP in initial inner medullary collecting ducts (IMCDi) may be important for making final adjustments to urine composition. We examined in primary cultures of human IMCDi cells the effects of adrenergic receptor (AR) agonists and antagonists on intracellular cAMP levels, short-circuit current (I(SC)), and fluid secretion. Epinephrine (1 micr...

This study was conducted to evaluate the combined rigor-accelerating effects of postmortem electrical stimulation (ES) and argon-induced anoxia (Ar) of broiler chickens. One hundred broilers were processed in the following treatments: untreated controls, ES, Ar, or Ar with ES (Ar + ES). Breast fillets were harvested at 1 h postmortem for all treatments or at 1 and 6 h postmortem for the control...

Stimulation of myocardial β(1)-adrenoceptors (AR) is a major mechanism that increases cardiac function. We investigated the functional consequences of genetic β(1)-AR knockdown in three-dimensional engineered heart tissue (EHT). For β(1)-AR knockdown, short interfering RNA (siRNA) sequences targeting specifically the β(1)-AR (shB1) and a scrambled control (shCTR) were subcloned into a recombina...

Multiple and paradoxical effects of airway smooth muscle (ASM) 7-transmembrane-spanning receptors activated during asthma, or by treatment with bronchodilators such as beta(2)-adrenergic receptor (beta(2)AR) agonists, indicate extensive receptor crosstalk. We examined the signaling of the prostanoid-EP(1) receptor, since its endogenous agonist prostaglandin E(2) is abundant in the airway, but i...

The presence of serum autoantibodies in periodontitis (P) patients against β(1)-adrenoceptor (β(1)-AR), using cardiac membranes or a synthetic β(1)-AR peptide corresponding to the second extracellular loop of human β(1)-AR as antigens, permit us to detect circulating antibody from 40 P patients but not in 20 normal individuals (control). Simultaneously, the P patients exhibited a decrease in HR...

Holycross BJ, Kukielka M, Nishijima Y, Altschuld RA, Carnes CA, Billman GE. Exercise training normalizes -adrenoceptor expression in dogs susceptible to ventricular fibrillation. Am J Physiol Heart Circ Physiol 293: H2702–H2709, 2007. First published August 24, 2007; doi:10.1152/ajpheart.00763.2007.—Previous studies demonstrated an enhanced 2-adrenoceptor (AR) responsiveness in animals suscepti...