VIP and NPY in canine hearts. Distribution and effect of total and selective parasympathetic denervation.

The hypotheses that vasoactive intestinal peptide (VIP) is evenly distributed throughout atrial and ventricular myocardium and is present in postganglionic parasympathetic neurons in the regions of the sinoatrial and atrioventricular nodes were tested in three groups of dogs. Neuropeptide Y (NPY) tissue concentrations were determined in each group. In six sham dogs VIP and NPY concentrations were evenly distributed and were higher in atria compared with ventricles.

Risk and protective factors affecting children in foster care: a pilot study of the role of siblings.

A retrospective chart review of 115 siblings (from 48 families) simultaneously taken into the care of a Children's Aid Society was conducted. These children were a very neglected group at great risk of developing mental illness. There was a significant correlation between the number of symptoms the child had while in the receiving home and the time spent in foster care.

Isozyme analysis as a tool for introgression of Sinapis alba germ plasm into Brassica napus.

Isozyme analysis of Brassica napus cv 'Topas' and CGRC5006 as well as of Sinapis alba cv 'Emergo' revealed significant polymorphism between the two species for the isozymes, aconitate hydratase, glucose phosphate isomerase, and diaphorase. F1 hybrids between B. napus '5006' and S.

Operative management of displaced femoral head fractures: case-matched comparison of anterior versus posterior approaches for Pipkin I and Pipkin II fractures.

Because of the controversy surrounding the selection of the surgical approach for the operative management of femoral head fractures, we retrospectively reviewed the combined experience with femoral head fractures at two major trauma centers. Forty-three femoral head fractures in 41 patients were identified. Twenty-six of the 43 fractures were Pipkin types I and II, and were managed operatively.

Computerised axial tomography of the trachea. A useful investigation when a retrosternal goitre causes symptomatic tracheal compression.

Case histories are reported of three patients who had large retrosternal goitres which were responsible for significant abnormalities of the airway. Computerised axial tomography demonstrated the exact anatomy. The site of tracheal compression was shown and accurate measurements of the diameter of the trachea at its narrowest point were made.