PMID: 16634198Apr 26, 2006Paper

Kinetics of the reaction of yolk cell surface in the loach to puncture and mechanic deformation

Ontogenez
E G Korvin-PavlovskaiaL V Belousov

Abstract

Circumferential and radial components of the yolk cell surface movements were measured in the loach embryos at the late blastula stage within 40-50 min after puncture or indentation by an obliquely directed glass rod. The yolk cell surface was preliminarily marked by coal particles. It was shown that even closely located regions of the surface differed markedly in the rate and direction of their movements. In the vicinity of puncture, the yolk cell surface at first contracted in both circumferential and radial directions and then widened, but did not reach the initial values. In more remote areas, this surface continued to contract in the circumferential direction, but was extended in the radial direction. The degree of its contraction along different radii was unequal. The reaction to oblique indentation was anisotropic: the closest area of the yolk cell surface, located along the direction of indentation, contracted in both circumferential and radial directions and formed a fold "leaking" onto the rod, while the opposite area contracted in the circumferential direction, but extended in the radial direction. A conclusion was drawn that the yolk cell surface is a multivariant mechanosensitive system. Its active responses to mec...Continue Reading

References

Dec 1, 1988·Cell Differentiation and Development : the Official Journal of the International Society of Developmental Biologists·L V BeloussovI I Naumidi
Apr 17, 1997·Biochemical and Biophysical Research Communications·B K DieckgraefeD H Alpers
Sep 2, 1999·Current Biology : CB·D P Kiehart
Sep 5, 2002·Cell Motility and the Cytoskeleton·Lance A DavidsonRay Keller

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