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At least 253 records · Page 14Linked to original sources
PubMed1978

Satellite and invasive cells in frog sartorius muscle.

The occurrence and distribution of two cell types associated with normal and denervated frog skeletal muscle fibers are described. The first is the satellite cell. The general appearance and the number of satellite cells are not affected by long-term denervation. The second type of cell is the invasive cell. Invasive cells penetrate across the basal lamina and up to the core of the muscle fiber, without fusing with it. It is suggested that the origin of invasive cells is extramuscular, probably circulatory. Although invasive cells are more numerous in some denervated muscle, it is established that this is not a direct effect of denervation.

Animals↗
PubMed1986

Buffer power and intracellular pH of frog sartorius muscle.

Intracellular pH (pHi) and buffer power of frog muscle were measured using pH-sensitive microelectrodes under conditions used previously in energy balance experiments because pH strongly influences the molar enthalpy change for phosphocreatine splitting, the major net reaction during brief contractions. The extracellular pH (pHe) of HEPES buffered Ringer's solution influenced pHi, but change in pHi developed slowly. Addition or removal of CO2 or NH3 from the extracellular solution caused a rapid change in pHi. The mean buffer power measured with CO2 was 38.4 mmol.l-1.pH unit-1 (+/- SEM 2.1, n = 49) and with NH3 was 36.2 (+/- SEM 5.5, n = 4) at 20-22 degrees C. At 5 degrees C, in experiments with CO2 the mean buffer power was 40.3 (+/- SEM 2.6, n = 3). For pHi values above approximately 7.0, the observed buffer power was greater than that expected from the values in the literature for the histidine content of intracellular proteins, carnosine and inorganic phosphate in the sarcoplasm. The measured pHi values were similar to those assumed in energy balance calculations, but the high measured buffer power suggests that other buffering reactions occur in addition to those included in energy balance calculations.

Animals↗
PubMed1987

Sartorius muscle "twist" rotation flap: an answer to flap necrosis.

Coverage of the femoral vessels with viable muscle flap after vascular reconstruction in the presence of infection is essential to prevent serious complications. Necrosis of the muscle flap as a result of interruption of its vascular pedicle can lead to complications that jeopardize the patient's life and limb. Our simple technique prevents such complications by preserving the muscle blood supply. We have used this method routinely during the past 6 years in patients with groin sepsis and did not encounter any case of muscle necrosis.

Fasciotomy↗