Projections from the spinal trigeminal nucleus to the entire length of the spinal cord in the rat.

Using retrograde transport of horseradish peroxidase, projections were found from the spinal trigeminal nucleus to all levels of the spinal cord in rat. In addition to the previously described projections from nucleus caudalis, axons originate from two areas - one overlapping the nucleus caudalis and interpolaris and one in the ventral division of nucleus oralis - and descend as far as the lumbosacral cord. Projections from the nucleus caudalis and interpolaris are primarily ipsilateral to all levels of the spinal cord.

Afferent projections to cardiovascular portions of the nucleus of the tractus solitarius in the rat.

Horseradish peroxidase was injected unilaterally into the intermediate portion of the nucleus of the tractus solitarius. The most extensive retrograde labeling was present contralaterally in the rostral fastigial nucleus, bilaterally in the Koelliker-Fuse nucleus, and bilaterally with ipsilateral predominance in the posterolateral hypothalamus and paraventricular hypothalamic nucleus. These projections may represent the anatomical substrates by which these brain areas modulate baroreceptor reflex function.

Adrenaline neurons in the rostral ventrolateral medulla innervate thoracic spinal cord: a combined immunocytochemical and retrograde transport demonstration.

Adrenaline-containing neurons in the C1 group of the ventrolateral rostral medullary reticular formation which project to the thoracic spinal cord were identified by a combined retrograde transport immunocytochemical technique. No other medullary catecholamine neurons, including the A1 and A2 noradrenaline cells, project to thoracic spinal cord. These data, taken with results of other studies of spinal catecholamine innervation, suggest a segmental segregation of projections to spinal cord by dopaminergic, noradrenergic, and adrenergic neurons.

Projections to the spinal cord from neurons close to the ventral surface of the hindbrain in the rat.

Neurons located within 100 micron of the ventral surface of the hindbrain were labeled following injections of horseradish peroxidase into the thoracic and lumbar spinal cord in the rat. Labeled neurons were distributed into two groups, one ventrolateral to the inferior olive and ventral to the facial nucleus, and one ventral to the raphe pallidus. The location of the ventrolateral subpial group is very similar to that of the brain stem chemosensitive zones, and suggests that the neurons in this group may be important in cardiovascular regulation.

[Distribution of anti-HAV in a population sample from Puglia].

To investigate the prevalence and distribution of antibody to hepatitis A virus (anti-HAV), we tested by solid phase radioimmunoassay method 461 sera of selected people of Bari, according to age. In addiction, sera from cord blood of 11 newborns and their mothers at delivery were also investigated for anti-HAV. Taken together 64.

Brain stem afferents to the fastigial nucleus in the cat demonstrated by transport of horseradish peroxidase.

Although retrograde and anterograde degeneration studies have provided important information concerning brain stem afferents to the fastigal nucleus (FN), these data may be incomplete and should be confirmed by axonal transport methods. Attempts were made to inject horseradish peroxidase (HRP) unilaterally into the FN in a series of adult cats. Animals were perfused with dextran and a fixative solution of paraformaldehyde and glutaraldehyde in 0.