The signaling pathways underlying the regulation of vascular resistance by purines in intact microvessels and particularly in communication of remote vasomotor responses are unclear. One process by which remote regions of arterioles communicate is via transmission of signals axially along the vessel wall. In this study, we identified a pathway for local and conducted dilations initiated by puri...

BACKGROUND Concern is growing about missed test results, but data assessing their effect on patient safety are limited. OBJECTIVE To examine the frequency with which computed tomography (CT)-documented dilations of the abdominal aorta are accompanied by evidence in the electronic medical record (EMR) that a clinician recognized the abnormality. DESIGN Retrospective cohort study. SETTING 2...

K(+) dilate and constrict cerebral vessels in a dose-dependent fashion. Modest elevations of abluminal K(+) cause vasodilatation, whereas larger extracellular K(+) concentration ([K(+)](out)) changes decrease cerebral blood flow. These dilations are believed to be mediated by opening of inward-rectifier potassium channels sensitive to Ba(2+). Because BaCl(2) also blocks ATP-sensitive K(+) chann...

We study the space of all d-tuples unitaries u = ( 1 , … d ) using dilation theory and matrix ranges. Given two such v generating, respectively, C*-algebras A B, we seek minimal constant c that ≺ by which mean there exist faithful ∗-representations π : → B H ρ K with ⊆ for i, i is equal to compression P | H. This gives rise a metric D log max { } on set equivalence classes ∗-isomorphic tuples u...

Nguyen, Thien-Son, H. Richard Winn, and Damir Janigro. ATP-sensitive potassium channels may participate in the coupling of neuronal activity and cerebrovascular tone. Am. J. Physiol. Heart Circ. Physiol. 278: H878–H885, 2000.—K1 dilate and constrict cerebral vessels in a dosedependent fashion. Modest elevations of abluminal K1 cause vasodilatation, whereas larger extracellular K1 concentration ...

A wavelet with composite dilations is a function generating an orthonormal basis or a Parseval frame for L2(Rn) under the action of lattice translations and dilations by products of elements drawn from non-commuting matrix sets A and B. Typically, the members of B are shear matrices (all eigenvalues are one) while the members of A are matrices expanding or contracting on a proper subspace of Rn...