In the spinal cord injured patient and indeed the patient with multiple sclerosis, damaged nerves in the main nervous system are frequently and erroneously thought to be beyond repair. Yet we have seen that this is clearly not the case?
If we sleep for 8 hours on a flat bed. Gravity is working against the nervous system and confusing the direction of growth. So instead of those myelin tendrils reaching down to find the correct pathway below the injury site, they simply bunch up and eventually contract.
Titre du document / Document title
Free vertical growth of myelin figures
SAKURAI I. (1) ; SHIBATA T. (1) ; MINOBE M. (2) ; KAWAMURA Y.
(1) The Institute of Physical and Chemical Research, Wako, Saitama 351-0198, JAPON
(2) Sumitomo Chem. Co., Ltd., Shinkawa, Chuou, Tokyo, 104-8260, JAPON
Résumé / Abstract
Myelin figures which grow from a floating egg-yolk lecithin lump on a surface of water/glycerin mixture have been found to grow only vertically towards the bottom of a glass cell and never to grow horizontally along the medium surface nor radially. The structure of the growing myelin figures is basically simple rod-like or a bundle of a few simple rods. Helixing, twisting or coiling myelin figures were never observed under the present experimental condition. Taking the results obtained from the reported growth behaviour of myelin figures into consideration, it is proposed that one of the driving forces of helixing, coiling and twisting growth of myelin figures is thought to be due to a chemical potential difference caused by a concentration gradient along the radial direction perpendicular to the long axis of a myelin figure. The hydrocarbon chains in the fully hydrated stacked bilayer of myelin figures are proposed to he in a more ordered state than reported so far. The arrangement of hydrocarbon chains, both in myelin figures and in an egg-yolk lecithin/water complex, and the density of them also will be discussed.
Revue / Journal Title
Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals ISSN 1058-725X
Source / Source
2001, vol. 363, pp. 157-165 (13 ref.)
Langue / Language
Editeur / Publisher
Gordon and Breach, Philadelphia, PA, ETATS-UNIS (1992-2002) (Revue)
INIST-CNRS, Cote INIST : 12857, 35400009997272.0130