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Biomedical subjects

C G de Araujo

Publications and source records attributed to C G de Araujo.

6 recordsLinked to original sources
PubMed1982

Urinary striated sphincter: what is its nerve supply?

Innervation of the voluntary urinary sphincter continues to be a controversial subject. Using retrograde axonal transport techniques to determine the exact nerve supply to the external sphincter has been successful in clarifying this controversy. 1-5 Tracing the transport of horseradish peroxidase (HRP) injected in the voluntary external sphincter and that injected directly in the cut end of the pudendal nerve was done. Transport from both sides ended in the same neurons in the dorsolateral column, thus labelling and identifying the pudendal nucleus which is the motor center for the voluntary urinary sphincter.

Animals↗
PubMed1982

Neural pathways to lower urinary tract identified by retrograde axonal transport of horseradish peroxidase.

A new technique for tracing nerve fibers supplying specific organs by retrograde axonal transport of the enzyme horseradish peroxidase (HRP) was used to determine the innervation of various segments of the lower urinary tract. HRP was injected at the level of the bladder neck, postprostatic urethral segment, pelvic nerve, pudendal nerve, and pelvic floor musculature to determine precise nerve supply to each site, as well as possible overlap. The technique determines the exact spinal level of innervation, as well as the number of nuclei directly related to the motor neuron axons supplying innervation to each particular site. Representation of these nuclei at various levels of the spinal cord was shown in various serial sections obtained after the injection of HRP. This technique is accurate and precise; it is valuable in establishing exact neural anatomic connections between the central nervous system and target organs.

Anal Canal↗
PubMed1981

Endoscopic surgery: a new teaching method.

A new method of teaching endoscopic surgery with a canine model is described. Its main advantage over the few existing methods is that it best reproduces the events of the human transurethral resection.

Animals↗