Channelpedia

PubMed 23716142


Referenced in Channelpedia wiki pages of: none

Automatically associated channels: ClvC1 , ClvC4



Title: An olive oil-derived antioxidant mixture ameliorates the age-related decline of skeletal muscle function.

Authors: Sabata Pierno, Domenico Tricarico, Antonella Liantonio, Antonietta Mele, Claudio Digennaro, Jean-François Rolland, Gianpatrizio Bianco, Luciano Villanova, Alessandro Merendino, Giulia Maria Camerino, Annamaria De Luca, Jean-François Desaphy, Diana Conte Camerino

Journal, date & volume: Age (Dordr), 2013 May 30 , ,

PubMed link: http://www.ncbi.nlm.nih.gov/pubmed/23716142


Abstract
Age-related skeletal muscle decline is characterized by the modification of sarcolemma ion channels important to sustain fiber excitability and to prevent metabolic dysfunction. Also, calcium homeostasis and contractile function are impaired. In the aim to understand whether these modifications are related to oxidative damage and can be reverted by antioxidant treatment, we examined the effects of in vivo treatment with an waste water polyphenolic mixture (LACHI MIX HT) supplied by LACHIFARMA S.r.l. Italy containing hydroxytirosol (HT), gallic acid, and homovanillic acid on the skeletal muscles of 27-month-old rats. After 6-week treatment, we found an improvement of chloride ClC-1 channel conductance, pivotal for membrane electrical stability, and of ATP-dependent potassium channel activity, important in coupling excitability with fiber metabolism. Both of them were analyzed using electrophysiological techniques. The treatment also restored the resting cytosolic calcium concentration, the sarcoplasmic reticulum calcium release, and the mechanical threshold for contraction, an index of excitation-contraction coupling mechanism. Muscle weight and blood creatine kinase levels were preserved in LACHI MIX HT-treated aged rats. The antioxidant activity of LACHI MIX HT was confirmed by the reduction of malondialdehyde levels in the brain of the LACHI MIX HT-treated aged rats. In comparison, the administration of purified HT was less effective on all the parameters studied. Although muscle function was not completely recovered, the present study provides evidence of the beneficial effects of LACHI MIX HT, a natural compound, to ameliorate skeletal muscle functional decline due to aging-associated oxidative stress.