Pregnancy-induced denervation of the human uterine artery correlates with local decrease of NGF and TrkA.

Pregnancy induces transient and reversible denervation of the mammalian uterus and uterine artery which origin remains still unclear. It is well established that the density of sympathetic innervation is regulated by the levels of peptidergic diffusible growth factors, especially nerve growth factor (NGF). Whether a decrease of NGF and/or its signal-transducing receptor TrkA are involved in this physiological denervation of the uterine artery during pregnancy has not been analyzed.

S100alpha and S100beta proteins in human cutaneous sensory corpuscles: effects of nerve and spinal cord injury.

S100 protein in the vertebrate peripheral nervous system consists of homo- or heterodimers of S100alpha and S100beta proteins, the first predominating in neurons and the second in glial cells. Recently, however, occurrence of S100beta protein in neurons has been reported. The expression of S100 protein by Schwann cells, as well as their derivatives in sensory corpuscles, depends on the sensory axon (i.

[The morphological and morphometric study of the segment of the labyrinth of the fallopian canal].

The study of the Fallopian canal with bone specimens can offer an exact and valuable information on the morphology of this duct and its close relations with neighbouring structures. The aim of this paper is to give an actualized compilation of the updated know findings, regarding the morphology and the morphometry of the first segment of the Fallopian canal. The study is based on 92 human temporal bones coming from skulls of adult subjects of both sexes.

[Relations between the maxillary sinus and upper maxillary process. Anatomotopographic study].

The anatomic proximity of the antral floor and superior alveolar processes favors the propagation of infections from teeth to neighboring structures, as was pointed out first by John Hunter. A radiologic and anatomic study was made of these anatomic relations and the bony substance between the alveolar ridge and maxillary sinus was measured. No firm criteria for normality could be established because of the variability of the maxillary sinus.

[Morphological and morphometric study of the tympanic and mastoid portions of the fallopian aqueduct].

In surgery of the temporal bone the best way to avoid injuries to the facial nerve is to be acquainted with its location in all the surgical steps of the procedure scheduled. That is to say: an exact knowledge of its normal intratemporal run, having always in mind some characteristic landmarks, is absolutely essential. This work has been done through drilling 92 human temporal bones, measuring the length of both the tympanic and mastoidal segments and also considering the bending of the 2nd knee of the nerve.