Torocyte shaped endovesicles with a low relative volume were induced in human erythrocytes by polyethyleneglycol dodecylether (C12E8). It is suggested that the torocyte endovesicles are formed in a process where an initially stomatocytic invagination loses volume while maintaining its large surface area. The boundaries of the phase diagram of the observed torocytes are described.
1. Deuling, H. J. and Helfrich, W. J. Phys. France. 37 (1976) 1335-1345.
2. Evans, E. and Skalak, R. Mechanics and Thermodynamics of Biomembranes. CRC Press Inc., Boca Raton, Florida, 1980, 1-254.
3. Sheetz, M. P. and Singer, S. J. Proc. Natl. Acad. Sci. 71 (1974) 4457-4461.
4. Evans, E. A. Biophys. J. 14 (1974) 923-931.
5. Svetina, S. and Žekš, B. Eur. Biophys. J. 17 (1989) 101-111.
6. Seifert, U. Advances in Physics 46 (1997) 13-137.
7. Kralj-Iglič, V., Svetina, S. and Žekš, B. Eur. Biophys. J. 22 (1993) 97-103.
8. Hägerstrand, H. and Isomaa, B. Biochim. Biophys. Acta 1109 (1992) 117-126.
9. Heinrich V. (1991) Theoretische Bestimmung von kugelnahen Vesikelformen mit Hilfe von Kugelfunktionen, Ph. D. Thesis, Humboldt University, Berlin, pp. 1-121.
10. Iglič, A., Hägerstrand, H., Kralj-Iglič, V. and Bobrowska-Hägerstrand, M. J. Biomechanics 31 (1998) 151-156.
11. Esgolc, L. E. Calculus of Variations. Pregamon Press, Oxford, 1963, 1-82.