Characterisation of aphid antixenosis in aphid-resistant ancestor wheat, Triticum monococcum.

Background: Due to the increasing presence of insecticide resistance across cereal aphid populations, new aphid management strategies, including the engineering of host resistance to aphids into commercial wheat varieties, are required. Previous studies have identified ancestor wheat, Triticum monococcum accessions MDR045 and MDR049, with resistance against the grain aphid, Sitobion avenae. To test the hypothesis that resistance can be accounted for by antixenosis (reduced attractiveness of host plants) via the release of repellent volatile organic compounds (VOCs), we explored the response of S.

Primary angioplasty for infarction due to isolated right ventricular artery occlusion.

We report an unusual case of an isolated right ventricular infarction with haemodynamic compromise caused by spontaneous isolated proximal occlusion of the right ventricular branch of the right coronary artery (RCA), successfully treated by balloon angioplasty. A 58-year-old gentleman presented with epigastric pain radiating into both arms. Electrocardiograph with right ventricular leads confirmed ST elevation in V4R and a diagnosis of isolated right ventricular infarction was made.

Cardiovascular magnetic resonance validation of fractional changes in annulo-apical angles and tricuspid annular plane systolic excursion for rapid assessment of right ventricular systolic function.

Purpose: To evaluate the use of right ventricular (RV) annulo-apical angle (AA) changes acquired by magnetic resonance imaging (MRI), alongside tricuspid annular plane systolic excursion (TAPSE), for its association with RV systolic function.

Materials And Methods: Thirty patients with varying RV dysfunction and 10 normal controls were enrolled and scanned after obtaining written consent. Systolic change in AAs, alpha (α), beta (β), and theta (θ), subtended by a triangle connecting the septal and lateral extent of the tricuspid valve annulus and RV apex, and TAPSE were measured.

Left ventricular filling and diastolic myocardial deformation in chronic primary mitral regurgitation.

Aims: Chronic primary mitral regurgitation (MR) results in enhanced filling of the left ventricle (LV) during early diastole. Filling is impaired with the onset of LV systolic dysfunction, due to increased myocardial stiffness and reduced restoring forces. We investigated echocardiographic parameters of early diastolic function in relation to LV systolic function.

Left atrial function and deformation in chronic primary mitral regurgitation.

Aims: To study global and regional left atrial (LA) mechanics in chronic primary mitral regurgitation (MR) with echocardiography.

Methods And Results: LA volumes during reservoir, conduit, and contractile phases were measured in 27 MR patients and 25 controls. LA ejection fraction (EF) and ejection force were calculated.