Human tibia Bone Marrow: Defining a Model for the Study of Haemodynamics as a Function of Age by Near Infrared Spectroscopy

概要

論文の詳細を見る
A human model allowing the non-invasive study of bone marrow haemodynamics has been developed. A decrease in postischaemic tissue reperfusion capability (postischaemic hyperaemia) as a function of age (range 25-72 years) was observed both in the human tibia and tibialis anterior muscle. In the tibia bone marrow the reperfusion capability started to decrease after 50 years and was lower than for muscle for all the age range. Mean basal muscle O_2 saturation (80.8% at 25 years) decreases as a function of age (-0.35%±0.13% per year) whereas it remains constant for bone marrow (84.8±2.8%). A Monte Carlo simulation has been performed to evaluate the accuracy of the derived O_2 saturation measurements and has shown that this parameter is robust even in the presence of substantial noise. It has also been demonstrated that it is necessary to use a multi wavelength NIR spectrometer and a second derivative based fitting algorithm to obtain reliable measurements from the bone marrow, and that the tissue scattering changes occurring during the protocol do not allow the use of the standard near infrared spectroscopy algorithms. The human tibia bone marrow model presented here and the related measurement technique should enable access to new areas of physiological research. J Physiol Anthropol Appl Human Sci 22 (5): 211-218, 2003 http: //www.jstage.jst.go.jp/en/
日本生理人類学会の論文