PMID: 9421141Jan 8, 1998Paper

Identification of central nervous system neurons that innervate the bladder body, bladder base, or external urethral sphincter of female rats: a transneuronal tracing study using pseudorabies virus

The Journal of Comparative Neurology
L Marson

Abstract

Transneuronal tracing techniques were used to identify the putative spinal and brainstem neurons involved in continence and voiding in the female rat. Pseudorabies virus, Bartha's K strain, was injected into either the external urethral sphincter, the bladder base, or the bladder body. After 3-5 days, the rats were perfused with fixative, and virus-labelled cells were identified by using immunohistochemistry. External urethral sphincter (EUS) injections resulted in labelling of pudendal motoneurons in the dorsolateral nucleus of L6. Putative spinal interneurons were found in the medial cord from T13 to S1 and in the lateral gray of T13-L2 and L5-S1. After both bladder base and bladder body injections, the majority of pseudorabies virus-labelled cells were found in the lateral gray and medial cord of L6-S1. A number of those found in the intermediolateral cell column resembled the parasympathetic preganglionic neurons; the remaining neurons in the lateral and medial gray were presumed to be interneurons. Very few pseudorabies virus-labelled cells were found rostral to T10. In the brainstem, transneuronally labelled cells were found in the parapyramidal medullary reticular formation, Barrington's nucleus, raphe magnus, raphe pall...Continue Reading

Citations

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