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PubMed · 7003781

Diagnostic techniques in multiple sclerosis.

Abstract

Although multiple sclerosis (MS) has been an area of great interest and effort in numerous scientific disciplines, its etiology, pathogenesis and therapy remain mysterious. Perhaps the most significant advances have resulted from the ability to be more precise in establishing the diagnosis of MS. Among the most important of the new diagnostic tools are electrophysiological techniques for examination of the visual and oculomotor systems. Tests such as the visually evoked potential (VEP) can confirm the existence of clinically suspected lesions and document the presence of asymptomatic ones. Various electrophysiological techniques for detection and evaluation of MS, as well as CSF analysis, psychological and neuroradiological procedures, and immunological observations are described. The relationship between optic neuritis and MS is reviewed, as are therapeutic regimens in use and under study.

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BibTeXRIS

C M Poser. Diagnostic techniques in multiple sclerosis.. https://doi.org/10.1016/0039-6257(80)90152-6

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Influence of temperature on neutrophil trafficking during clinical cardiopulmonary bypass.

BACKGROUND: The adhesion of neutrophils to endothelial cells and their subsequent transendothelial migration play a major role in inflammatory damage elicited by cardiopulmonary bypass (CPB) because these events are linked to the release of cytotoxic proteases and oxidants. However, the patterns of neutrophil trafficking in relation to systemic temperature during clinical CPB have not yet been characterized. METHODS AND RESULTS: Twenty case-matched patients undergoing warm (31.8 +/- 0.4 degrees C) or cold (26.3 +/- 0.5 degrees C, P < .0001 versus warm) bypass were studied. Blood samples were simultaneously collected from the right and left atria before, at the end of, and 30 minutes after CPB. Plasma levels of C3a, P- and E-selectins, elastase, and interleukin-8 were determined by immunoassays. The results demonstrate: (1) a rise in C3a, reflecting complement activation, (2) a fall in soluble E-selectin consistent with an increased adhesiveness of activated neutrophils, (3) a rise in soluble P-selectin expected to enhance endothelial adhesion of these neutrophils, (4) a rise in elastase, suggesting an adhesion-triggered neutrophil degranulation, and finally (5) a rise in interleukin-8 that is likely to promote transendothelial migration of adherent neutrophils. All of these changes occurred in the two groups of patients and were significant compared with prebypass values. However, in none of the groups was there a significant difference between right and left atrial values for any of the markers. The single difference between cold and warm bypass patients was a significant reduction of elastase release in the cold group (P < .001 versus the warm group). CONCLUSIONS: Clinical CPB is associated with biological changes suggesting the occurrence of neutrophil trafficking. Hypothermia provides only partial protection through a reduced release of elastase. Overall, these results reinforce the rationale for the development of therapeutic strategies targeted at blunting the neutrophil-mediated component of bypass-induced inflammatory damage.

Body Temperature