1990
DOI: 10.1016/s0006-3495(90)82508-x
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Structure and dynamics of water in tendon from NMR relaxation measurements

Abstract: Nuclear magnetic relaxation times were measured in collagen tissue when varying the orientation of the fiber with respect to the static field. T1 was found to be only slightly dependent on theta, the fiber-to-field angle, but T2 was very sensitive to the orientation, with a maximum value at the magic angle. The transverse decay curves were multiexponential. Their deconvolution displayed four components; the ones that decayed most slowly were almost independent of theta, but the two fastest ones showed a strong… Show more

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Cited by 111 publications
(104 citation statements)
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“…(iii) Involvement of the solvent hydrogen-bond network in collagen triple helix interaction has been further demonstrated by comparing the forces in hydrogenbonding and nonhydrogen-bonding nonaqueous solvents (14). (iv) Distance-dependent variation of several spectral and thermodynamic parameters of interstitial water has been observed by a number of experimental techniques (1,(3)(4)(5)(6)(7)(8).…”
Section: Discussionmentioning
confidence: 98%
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“…(iii) Involvement of the solvent hydrogen-bond network in collagen triple helix interaction has been further demonstrated by comparing the forces in hydrogenbonding and nonhydrogen-bonding nonaqueous solvents (14). (iv) Distance-dependent variation of several spectral and thermodynamic parameters of interstitial water has been observed by a number of experimental techniques (1,(3)(4)(5)(6)(7)(8).…”
Section: Discussionmentioning
confidence: 98%
“…Within the most simple scheme, this interstitial water is separated into two distinct classes-tightly bound and ''free'' or bulk-like (1,2). More elaborate models imagine three or even more fractions (3)(4)(5)(6)(7)(8). Tightly bound waters are believed to stabilize the triple helix by participating in the H-bond backbone (see ref.…”
mentioning
confidence: 99%
“…In the normal tendon, we could apparently identify two fractions of water based on different T 2 relaxation times (long and short T 2 ). There have been several studies reporting on the number of T 2 fractions of water in the normal tendon which have ranged from one to four [7][8][9]. Deuterium NMR examination of the normal tendon has been reported to show two distinct water fractions which can be regarded as free and bound water fractions [20].…”
Section: Discussionmentioning
confidence: 99%
“…Since the magnetic dipolar interaction is a function of the angle between the static magnetic field and the orientation of the bound water, the T 2 relaxation time of the bound water demonstrates orientational anisotropy [7][8][9]. When the proton of the bound water molecule is oriented to the "magic angle" (54.7°) against the static magnetic field, the effect of this dipolar interaction is minimized, so the T 2 relaxation time of the proton is at its longest.…”
Section: Discussionmentioning
confidence: 99%
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