Key result
Absorption spectroscopy distinguishes hypertension and correlates with arterial morphology in isolated vessels.
Why the study?
The assessment of vascular structure provides important information on pathological processes, but alternative methods to light microscopy for small arterial vessels are needed.
Spectroscopic myography of rat resistance arteries is feasible; leaves open translation to human hypertension assessment.
The assessment of vascular structure gives important information on pathological processes, particularly for the investigation of diseased vessels. In this study the Mulvany wire myogarph is adapted for spectroscopic examination of small arterial blood vessels obtained from hypertensive and normal rat specimens. An experimental study of 20 vessels obtained from adult Wistar rats and Goldblatt (one kidney one clip) hypertensive rats was carried out. Segments of small resistance arteries mounted under isometric conditions on a wire myograph and set to normalised conditions of passive force directly obtained from its circumferential length-tension relationship were morphologically examined and transmission spectra obtained. Features of the observed transmission spectra were extracted by means of an empirical non-linear model using the quasi-Newton method. These features were correlated for the first time with standard descriptors of vessel morplzology, media:lumen ratio and with arterial blood pressure. The extent and significance of such correlations are sufficient to distinguish the presence of hypertension in isolated arterial segments from hypertensive animals. This technique may provide an alternative to light microscopy as well as a potential new tool for the analysis of small blood vessels in the study of vascular disease.
No takes yet. Share an insight, caveat, or question.
Kaur et al. (2001) studied Hypertension (n=20). Absorption spectroscopy using an adapted Mulvany wire myograph vs. Standard descriptors of vessel morphology (light microscopy) was evaluated on Correlation of transmission spectra features with standard descriptors of vessel morphology, media:lumen ratio, and arterial blood pressure. Absorption spectroscopy features correlated with standard descriptors of vessel morphology and arterial blood pressure, sufficient to distinguish hypertension in isolated arterial segments.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: