Subcellular fractionation of frozen skeletal muscle samples.

Cell fractionation can be used to determine the localization and trafficking of proteins between cellular compartments such as the cytosol, mitochondria, and nuclei. Subcellular fractionation is usually performed immediately after tissue dissection because freezing may fragment cell membranes and induce organellar cross-contamination. Mitochondria are especially sensitive to freezing/thawing and mechanical homogenization.

Proteomic profiling of skeletal muscle in an animal model of overtraining.

Excessive training (i.e. overtraining, OT) may result in underperformance, which can be characterized by the time needed to re-establish performance (i.

Electrocatalytic determination of reduced glutathione in human erythrocytes.

The determination of reduced glutathione (GSH) in human erythrocytes using a simple, fast and sensitive method employing a glassy carbon electrode modified with cobalt tetrasulfonated phthalocyanine (CoTSPc) immobilized in poly(L: -lysine) (PLL) film was investigated. This modified electrode showed very efficient electrocatalytic activity for anodic oxidation of GSH, decreasing substantially the anodic overpotentials for 0.2 V versus Ag/AgCl.

Adequacies of skin puncture for evaluating biochemical and hematological blood parameters in athletes.

Objective: The authors tested the effect of blood sampling (skin versus venous puncture) on some biochemical and hematological blood parameters in athletes to answer whether skin puncture could be used as a substitute for venous puncture.

Design: Comparative study of 2 methods of blood samples collection.

Setting: The blood was collected in the same athletes at 3 different moments of the preparatory training phase.