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Biomedical subjects

W F MOMMAERTS

Publications and source records attributed to W F MOMMAERTS.

At least 37 records · Page 2Linked to original sources
PubMed1959

A study of inotropic mechanisms in the papillary muscle preparation.

The length-tension diagram, the force-velocity relation, the characteristics of the series elasticity, and the duration of the active state have been studied on the papillary muscle preparation of the cat heart, and on other examples of cardiac muscle. Positive inotropic changes such as the staircase phenomenon and post-extrasystolic potentiation occur without lengthening, but frequently with shortening, of the duration of the active state. They are accompanied by an increased velocity of contraction, and may be caused either by an intensification of the active state or by an alteration of the force-velocity characteristics of the contractile component. The changes in the force-velocity relation point to an adaptation of the velocity-efficiency relation in dependence on the frequency of contraction.

Animals↗
PubMed1956

The effect of adenosinetriphosphate upon actomyosin solutions, studied with a recording dual beam light-scattering photometer.

A recording dual beam light-scattering photometer is described which permits kinetic studies involving changes in turbidity, and which is not, as are single photocell instruments, affected by the errors due to the attenuation of the scattered light within the turbid medium. With this method, a renewed study has been made of the physical changes occuring in actomyosin under the influence of ATP.

Actomyosin↗