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Critical evaluation of cytosolic calcium determination in resting muscle fibres from normal and dystrophic (mdx) mice

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Gailly, Philippe [UCL] Boland, Benoît [UCL] Himpens, B. Casteels, R. Gillis, Jean-Marie [UCL]

The fluorescent probe Fura-2/AM was used to determine cytosolic free calcium concentration in soleus muscle and in isolated flexor digitorum brevis fibres. This required a precise calibration; therefore, each calibration parameter was studied in situ. The influence of the dye concentration on calcium measurements was also examined. This precise calibration technique was used to compare absolute free calcium concentration in resting preparations from dystrophic (mdx) and control (C57) mice. We showed that the behavior of the dye was not similar in C57 and in mdx muscles. For this reason, we did not confirm the previous results that cytosolic free calcium concentration is increased in mdx muscles.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès restreint
Publication date 1993
Journal information "Cell Calcium" - Vol. 14, no. 6, p. 473-483 (1993)
Peer reviewed yes
Publisher Churchill Livingstone (London)
issn 0143-4160
e-issn 1532-1991
Publication status Publié
Affiliations UCL - MD/MINT - Département de médecine interne
UCL - (SLuc) Service de gériatrie
UCL - MD/FSIO - Département de physiologie et pharmacologie
MESH Subject Animals ; Artifacts ; Biological Transport ; Calcium - metabolism ; Calibration ; Dystrophin - deficiency ; Fluorescent Dyes - metabolism ; Fluorometry ; Fura-2 - analogs & derivatives - metabolism ; Ionomycin - pharmacology ; Kinetics ; Mice ; Mice, Inbred C57BL - metabolism ; Mice, Mutant Strains - metabolism ; Muscle Contraction - drug effects ; Muscles - metabolism ; Muscular Dystrophy, Animal - metabolism ; Osmolar Concentration ; Type C Phospholipases - pharmacology ; Vanadates - metabolism
Links
Bibliographic reference Gailly, Philippe ; Boland, Benoît ; Himpens, B. ; Casteels, R. ; Gillis, Jean-Marie. Critical evaluation of cytosolic calcium determination in resting muscle fibres from normal and dystrophic (mdx) mice. In: Cell Calcium, Vol. 14, no. 6, p. 473-483 (1993)
Permanent URL http://hdl.handle.net/2078.1/29616