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Titolo:
TEMPERATURE-DEPENDENCE AND PHASE-TRANSITION OF PROTON RELAXATION OF HYDRATED COLLAGEN IN INTACT BEEF TENDON SPECIMENS VIA CROSS-RELAXATION SPECTROSCOPY
Autore:
TZOU DL; LEE SM; YEUNG HN;
Indirizzi:
ACAD SINICA,INST BIOMED SCI TAIPEI 11529 TAIWAN ACAD SINICA,INST BIOMED SCI TAIPEI 11529 TAIWAN
Titolo Testata:
Magnetic resonance in medicine
fascicolo: 3, volume: 37, anno: 1997,
pagine: 359 - 365
SICI:
0740-3194(1997)37:3<359:TAPOPR>2.0.ZU;2-3
Fonte:
ISI
Lingua:
ENG
Soggetto:
HETEROGENEOUS SPIN SYSTEMS; MAGNETIZATION-TRANSFER; LONGITUDINAL MAGNETIZATION; SELECTIVE SATURATION; PROTEIN HYDRATION; TRANSIENT DECAY; NMR RELAXATION; PULSED NMR; WATER; TISSUE;
Keywords:
MAGNETIZATION TRANSFER; HYDRATED COLLAGEN; BOUND WATER; PROTON RELAXATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
39
Recensione:
Indirizzi per estratti:
Citazione:
D.L. Tzou et al., "TEMPERATURE-DEPENDENCE AND PHASE-TRANSITION OF PROTON RELAXATION OF HYDRATED COLLAGEN IN INTACT BEEF TENDON SPECIMENS VIA CROSS-RELAXATION SPECTROSCOPY", Magnetic resonance in medicine, 37(3), 1997, pp. 359-365

Abstract

The role of water of hydration in proton relaxation in tissues as exemplified by hydrated collagen in beef tendon was studied as a functionof temperature from -40 degrees to 37 degrees C by using cross-relaxation spectroscopy. Experimental data were fitted to a simple binary spin-bath model. The outcome of this procedure allows the construction of a semi-quantitative depiction of proton relaxation in a heterogeneous system and its change as one of the water fractions freezes at about-10 to -20 degrees C, a transition observed by NMR and confirmed independently by differential scanning calorimetry. Such physical depiction provides a crude but insightful interpretation of the role ''bound''water plays in proton relaxation. This may be important in shedding light on the mechanism of tissue relaxation and its role in MRI diagnosis, particularly for those diseases such as liver cirrhosis where the water-macromolecular interaction plays a prominent role.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 12/07/20 alle ore 03:14:56