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Dorsal root ganglion neuroanatomy

Neringa Pauziene, Paulius Alaburda, Kristina Rysevaite-Kyguoliene, Audrys G Pauza, Hermanas Inokaitis, Aiste Masaityte, Gabriele Rudokaite, Inga Saburkina, Jurgita Plisiene, Dainius H Pauza
The rabbit is widely used in experimental cardiac physiology, but the neuroanatomy of the rabbit heart remains insufficiently examined. This study aimed to ascertain the architecture of the intrinsic nerve plexus in the walls and septum of rabbit cardiac ventricles. In 51 rabbit hearts, a combined approach involving: (i) histochemical acetylcholinesterase staining of intrinsic neural structures in total cardiac ventricles; (ii) immunofluorescent labelling of intrinsic nerves, nerve fibres (NFs) and neuronal somata (NS); and (iii) transmission electron microscopy of intrinsic ventricular nerves and NFs was used...
January 2016: Journal of Anatomy
L N Novikov
The efficacy of anterograde labeling of the central projections of primary afferent fibers were compared between biotinylated dextran amine (BDA), neurobiotin (NB) and Phaseolus vulgaris-leucoagglutinin (PHA-L) after injections into the L5 or T13 dorsal root ganglia (DRGs) of adult rats. Excellent labeling was obtained with BDA, which visualized fibers with fine terminal boutons in the L5 and T13 spinal cord segments, Clarke's nucleus and the gracile nucleus. Rarely observed crossed projections to the gracile nucleus and L5 ventral horn of the contralateral side could also be distinguished...
December 15, 2001: Journal of Neuroscience Methods
S Vanhatalo, E Klinge, N O Sjöstrand, S Soinila
While the crucial role of neurally produced nitric oxide in mediating penile erection is well established, the understanding of the peripheral neuroanatomy of the nitric oxide-ergic pathways is still incomplete. This study was designed to elucidate further the distribution of nitric oxide synthase, and its relation to the distribution of neuropeptides and tyrosine hydroxylase in all penis-projecting neural pathways. A triple-labelling technique was employed, with the retrograde tracer Fluoro Gold combined with neuropeptide immunohistochemistry and nicotinamide adenine dinucleotide phosphate (NADPH)-diaphorase histochemistry, a marker of nitric oxide synthase...
December 1996: Neuroscience
R C Elson
The internal organization of the third and fourth thoracic ganglia of the crayfish, Pacifastacus leniusculus, was studied in serial sections stained with osmium ethyl gallate. The aims were 1) to provide an anatomical framework for studies of sensorimotor integration in the walking system and 2) to explore possible homologies with abdominal ganglia in crayfish and with the thoracic ganglia of insects. Crayfish thoracic ganglia show several intersegmental homologies with the unfused ganglia of the abdominal nervous system: 1) Longitudinal tracts and dorsal commissures are arranged similarly, allowing use of the same nomenclature...
January 29, 1996: Journal of Comparative Neurology
N T Davis
The neuroanatomy of a serotonin neurohemal system in the head of Periplaneta americana was studied by means of immunohistochemistry, cobalt backfilling, transmission electron microscopy, and nerve transection. This neurohemal system is supplied by bilateral groups of two or three neurons whose somata are located ventrally in the subesophageal ganglion, near the root of each mandibular nerve. Axons of these serotoninergic neurons extend into all of the nerves of the mouth parts but reach most of these nerves by a very circuitous route...
May 22, 1987: Journal of Comparative Neurology
Z Wang, R van Dorp, A F Weidema, D L Ypey
Effects of mild microwave treatment (1 hr, 37 degrees C) on the in vitro development of rat mechanically dissociated dorsal root ganglion (DRG) neurons were investigated to establish whether microwave irradiation effects exist on nervous tissue other than heat induced tissue fixation. Phase contrast microscopy and immunocytochemical neurofilament stainings did not reveal significant differences between irradiated (2 hr after isolation) and control cultures, maintained up till 21 days. The electrophysiological properties of microwave exposed and non-exposed DRG neurons were compared using the whole-cell patch-clamp technique...
1991: European Journal of Morphology
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