Nitric oxide (NO) influences electrophysiological and morphological parameters of the mammalian cochlea. Recently, the isoform of the NO-producing enzyme neuronal NO synthase (nNOS) has been demonstrated in spiral ganglion cells and olivocochlear neurons. The cochlea is also innervated by fibers stemming from the trigeminal ganglion (TG) and superior cervical ganglion (SCG). Whether these gangl...

Recent observations have suggested that the dendritic arbors of sympathetic ganglion cells may be regulated by interactions with their peripheral targets (Voyvodic, 1987a; Yawo, 1987). In order to assess a potential mechanism for such interactions, I have investigated the effects of the target-derived trophic molecule for sympathetic ganglion cells on the development of dendrites in the rat sup...

THE blockade of the ganglion impar, a single ganglion converged by the caudal ends of the two sympathetic trunks, has been described to relieve the intractable perineal pain of sympathetic origin in patients with rectal, anal, colon, bladder, or cervical cancer. The success rate of this method depends on the anatomical variability of the location of the ganglion, but its location has been varia...

An elderly woman had an expanding cervical mass that entrapped and compressed the adjacent cranial nerves, blood vessels, and muscles. The mass was dense on radiographs, extended from the skull base to low neck in the prevertebral and parapharyngeal tissues, and showed mixed intensity on MR. A previous direct carotid arteriogram with thorium dioxide as the contrast agent suggested the histologi...

Latent herpes simplex virus infection of the superior cervical autonomic ganglion was reactivated in vivo by postganglionic neurectomy. Two methods were used to demonstrate viral reactivation: (i) recovery of infectious herpes simplex virus in ganglion homogenates and (ii) acceleration of virus expression in ganglion explants in culture. Both the percentage of mice exhibiting reactivated gangli...

PURPOSE To characterize the appearance of the gasserian ganglion on contrast-enhanced MR images. METHODS We retrospectively reviewed the MR images from 57 patients with suspected pituitary disease. These patients had undergone unenhanced and contrast-enhanced MR imaging of the sella, including evaluation of Meckel's cave. None of the patients had clinical signs or symptoms referable to the fi...

BACKGROUND There have been several imaging studies of cervical radiculopathy, but no three-dimensional (3D) images have shown the path, position, and pathological changes of the cervical nerve roots and spinal root ganglion relative to the cervical bony structure. The objective of this study was to introduce a technique that enables the virtual pathology of the nerve root to be assessed using 3...