Publications by authors named "Ole Amtorp"

The decline in mortality from ischaemic heart disease (IHD) of 81% from 1990 to 2015 is dramatic and one of the greatest successes of Danish public health care. Improved treatment regimes and changes in modifiable risk factors contribute equally to the decline in mortality (47% vs. 44%).

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The threshold pressure for lung edema formation is increased in severe chronic heart failure (CHF) due to reduced microvascular permeability. The water channel aquaporin-1 (AQP1) is present in the pulmonary microvascular endothelium, and a number of studies suggest the importance of AQP1 as a molecular determinant of pulmonary microvascular water transport. The present study examined the abundance and localization of AQP1 in lungs from rats with CHF.

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Background: Particulate air pollution can aggravate cardiovascular disease by mechanisms suggested to involve translocation of particles to the bloodstream and impairment of endothelial function, possibly dependent on present atherosclerosis.

Aim: We investigated the effects of exposure to diesel exhaust particles (DEP) in vivo and ex vivo on vasomotor functions in aorta from apoE(-/-) mice with slight atherosclerosis and from normal apoE(+/+) mice.

Methods: DEP 0, 0.

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We tested the hypothesis that arterial reactivity to noradrenaline is augmented in congestive heart failure (CHF), which could contribute to the deleterious changes in peripheral vascular resistance and compliance in this condition. From male Wistar rats with post-infarction CHF and sham-operated rats, skeletal muscle conductance and resistance arteries (mean lumen diameters: 514 and 186 microm) were isolated and mounted on wire myographs, and wall tension was recorded in response to cumulative application of acetylcholine and noradrenaline to the vessel segments. In a subset of experiments, wall tension and cytosolic free calcium ion concentration [Ca(2+)](i) were recorded simultaneously during noradrenaline application, using wire myography and the FURA-2 technique.

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In this study we tested the hypothesis that arterial myofilament Ca(2+) sensitivity and/or the Ca(2+) sensitising effect of noradrenaline (NA) is enhanced in post-infarction congestive heart failure (CHF), which could contribute to the high peripheral vascular resistance in this condition. Femoral skeletal muscle resistance and conductance arteries (mean lumen diameters of 159 and 519 microm) from rats with CHF and sham-operated control rats were used. Isometric tension development and intracellular free calcium concentration ([Ca(2+)](i)) were measured simultaneously in isolated vessel segments using wire myography and the FURA-2 fluorescence technique.

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Brugada syndrome is a primary electrical disease involving a wide spectrum of phenotypes. The hallmark of Brugada syndrome is the ST elevation in leads V1 to V3. We present three cases of Brugada syndrome.

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Systemic administration of recombinant erythropoietin (EPO) has been demonstrated to mediate neuroprotection. This effect of EPO may in part rely on a beneficial effect on cerebrovascular dysfunction leading to ischaemic neuronal damage. We investigated the in vivo effects of subcutaneously administered recombinant EPO on impaired cerebral blood flow (CBF) autoregulation after experimental subarachnoid haemorrhage (SAH).

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