The role of lamellate phospholipid bilayers in lubrication of joints

• Autorzy: Pawlak Z. , Urbaniak W. , Gadomski A. , Yusuf K.Q. , Afara I.O. , Oloyede A.
• Języki publikacji: EN

Abstrakty

EN

This study aims to determine the effect of progressive loss of the surface active phospholipids on the characteristics, and hence tribological function of articular cartilage. In accordance to Hill's hypothesis, 3-7 lipid bilayers at pH 7.4 operate as the solid lubricant in the cartilage-cartilage interface during physiological function. These bilayers are known to be depleted during cartilage degeneration. This study models this loss of phospholipid bilayers, studying experimentally both wet and dry cartilage surfaces, measuring surface wettability, and friction coefficient under a constant stress of 1.2 MPa. The results demonstrate that the friction coefficient increases gradually with loss of the phospholipid bilayers, and gains in value with decrease in wettability.

Słowa kluczowe

EN

articular cartilage; lipids; wettability; friction coefficient

PL

chrząstka stawowa; lipidy; wilgotność; współczynnik tarcia

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2012
• Tom: Vol. 14, no. 4
• Strony: 101--106
• Opis fizyczny: Bibliogr. 29 poz., rys.

Twórcy

autor

Pawlak Z.

autor

Urbaniak W.

autor

Gadomski A.

autor

Yusuf K.Q.

autor

Afara I.O.

autor

Oloyede A.

• Tribochemistry Consulting, Salt Lake City, UT 84117, USA,

Bibliografia

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