Rita de Cássia Ribeiro da Silva Lapa

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1. The participation of the paratrigeminal nucleus (Pa5) in the pressor response produced by bradykinin in the dorsolateral medulla of rats was investigated. The microinjection of 6 pmol of bradykinin directly over the paratrigeminal nucleus of unanaesthetized rats produced a significant increase in arterial pressure and a moderate increase in heart rate.(More)
A quantitative evaluation of the types of synaptic contacts from afferent fibres in the paratrigeminal nucleus after partial pulpectomy was compared with that after transection of the inferior alveolar nerve (IAN), using transganglionic degeneration. Degenerating terminals with a marked increase in axoplasmic electron opacity were observed bilaterally in(More)
To analyse the effect of ageing on the projection of the anterior interposed nucleus to the red nucleus, we injected the retrograde tracer fluorogold in the red nucleus of 3-, 6- and 12-month-old mice. The number of labelled neurones in the anterior interposed nucleus fell by 9% between 3 and 6 months and by another 9% between 6 and 12 months (all P <(More)
Transganglionic degeneration was used in an electron microscopic study of afferent synaptic contacts in the dorsomedial region of the pars interpolaris of rats. In one experiment, the left inferior alveolar nerve was transected and in the other, partial pulpectomy of the first and second left lower molars was performed. Well defined degenerating terminals,(More)
A quantitative evaluation of the types of afferent synaptic contacts in the pars oralis, using transganglionic degeneration and a comparison of previous data obtained from the pars interpolaris (Lapa & Bauer, 1992), of the rat was performed. Following left inferior alveolar nerve transection or partial pulpectomy of the first and second left lower molar(More)
We studied projections from the interstitial system of the spinal trigeminal tract (InSy-S5T) to the red nucleus of the mouse with retrograde tracers (fluorogold and latex microbeads impregnated with rhodamine and fluorescein). Injections in the magnocellular part of the red nucleus caused labeling of cells in the rostral, intermediate, and caudal(More)
The lack of dystrophin that causes Duchenne muscle disease affects not only the muscles but also the central nervous system. Dystrophin-deficient mdx mice present changes in several brain fiber systems. We compared the projections from the trigeminal sensory nuclear complex to the red nucleus in control and mdx mice using retrograde tracers. Injection of(More)
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