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Scientific article
English

Energy metabolism and interstitial fluid displacement in human gastrocnemius during short ischemic cycles

Contributors

Binzoni, Tiziano; Quaresima, V; Barattelli, G; Hiltbrand, Emile; Gürke, L; Terrier, François; Cerretelli, Paolo; Ferrari, M

Published in

Journal of applied physiology, vol. 85, no. 4, p. 1244-1251

Publication date

1998

Abstract

Energy metabolism and interstitial fluid displacement were studied in the human gastrocnemius during three subsequent 5-min ischemia-reperfusion periods [ischemic preconditioning (IP)]. The muscle energy balance was assessed by combining near-infrared spectroscopy (NIRS) and 31P-nuclear magnetic resonance spectroscopy (31P-NMRS). The interstitial fluid displacement was determined by combining NIRS and 23Na-NMRS. No changes in total energy consumption or in the fractional contribution of the underlying energy sources (aerobic glycolysis, anaerobic glycolysis, and Lohmann reaction) were observed in the muscle during the tested IP protocol. Oxygen consumption in the muscle region of interest, as estimated by NIRS, was approximately 8 micromol . 100 g-1 . min-1 and did not change during IP. Phosphocreatine and ATP concentrations did not change over the whole experimental period. A slight but significant (P < 0.05) increase in intracellular pH was observed. Compared with the control, a 10% greater interstitial fluid content per muscle unit volume was observed at the end of the IP protocol. It is concluded that, at variance with cardiac muscle, repeated 5-min ischemia-reperfusion cycles do not induce metabolic changes in human gastrocnemius but alter the interstitial fluid readjustment. The techniques developed in the present study may be useful in identifying protocols suitable for skeletal muscle preconditioning and to explain the functional basis of this procedure.

Keywords

  • Adenosine Triphosphate/metabolism
  • Aerobiosis
  • Energy Metabolism
  • Extracellular Space/physiology
  • Female
  • Hemoglobins/metabolism
  • Humans
  • Ischemia/physiopathology
  • Kinetics
  • Magnetic Resonance Spectroscopy
  • Male
  • Models, Biological
  • Muscle, Skeletal/blood supply/metabolism/physiology
  • Oxygen/metabolism
  • Oxygen Consumption
  • Oxyhemoglobins/metabolism
  • Phosphocreatine/metabolism
  • Spectrophotometry, Infrared
  • Time Factors

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

BINZONI, Tiziano et al. Energy metabolism and interstitial fluid displacement in human gastrocnemius during short ischemic cycles. In: Journal of applied physiology, 1998, vol. 85, n° 4, p. 1244–1251. doi: 10.1152/jappl.1998.85.4.1244

Main files (1)

Article (Published version)

Identifiers

Journal ISSN

1522-1601
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Technical informations

Creation

12/12/2016 15:04:00

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12/12/2016 15:04:00

Update

20/02/2026 11:34:14

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20/02/2026 11:34:14

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