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The development of the spiral ganglion was studied in steps sections of 81 human temporal bones. By the 8th week, the spiral ganglion has already separated from the vestibular ganglion. At 13 weeks two distinct populations are observed that correspond to neuron and Schwann cells. At 15 weeks the spiral ganglion has increased its distance from the cochlear duct and is surrounded by mesenchyme near the scala tympani. At 14 weeks a gradual decrease in the nucleus-to-cell area ratio was observed in spiral ganglion neurons that may reflect a morphological adaptation to function. By the 23rd week the modiolus begins to ossify and the spiral ganglion is surrounded by bony trabeculae. The time course of spiral ganglion development follows that of the stria vascularis and organ of Corti, although maturation changes are still observed in the neuronal population even beyond 20 weeks.
The aim of the study was to evaluate the effect of rehabilitation treatment to improve the treatment results of patients operated for ganglions of the wrist. We studied the hands of 77 patients with ganglions of the wrist. 43 women and 34 men aged between 16 and 98 years participated in the study. The open method was used in the surgical treatment to remove the wrist ganglions in all the patients. In the post-operative treatment 46 patients (group I) underwent hand rehabilitation treatment under the supervision of the authors and 31 patients (group II) did not undergo such a treatment. The examination was carried out on all the patients before surgery and at weeks 1 and 4 after surgery. The patients with ganglions of the wrist and pain, impaired hand mobility and impaired hand efficiency were qualified for the surgical treatment. In the rehabilitation treatment stretching exercises were performed as well as loosening and stabilizing the hand and teaching the patients the correct positioning of the upper limb during work and physical activity. The results were statistically analyzed using non-parametric tests such as the chi-square test, signs test and Mann-Whitney test. It was found that in patients after surgical removal of the wrist ganglion rehabilitation treatment has led to the resolution of pain syndromes, movement disorders and efficiency of hand.
This is the first report dealing with the localisation and morphology of the proximal (jugular) ganglion in the pig. Six 3 months old pigs of both sexes were used in this study. Tissues were stained with three histological methods: Klu¨ver-Barer counterstained with Cresyl violet, Haematoxylin-eosin and Mayer’s haematoxylin. The localisation and morphological features of the ganglion and ganglionic neurones were described and discussed.
Immunohistochemical characteristics of neurones innervating the porcine uterus located in paracervical ganglia were studied with a combination of retrograde fluorescent tracing and immunofluorescence. Retrograde fluorescent tracer Fast Blue (FB) was injected into the uterine horn and uterine cervix. The presence of biologically active substances, tyrosine hydroxylase (TH), neuropeptide Y (NPY), vasoactive intestinal polypeptide (VIP), galanin (GAL), Met-enkephalin-Arg-GlyLeu (MEAGL) and calcitonin gene-related peptide (CGRP) was studied in FBpositive neurones localised in paracervical ganglia. FB-positive neurones containing TH, NPY, VIP and MEAGL were numerous, while those containing CGRP were scarce. The results pointed to some species-related differences in immunohistochemical coding of neurones of paracervical ganglion responsible for uterus innervation.
Using the thiocholine method of Koelle and Friedenwald and histological techniques, the otic ganglion in Egyptian spiny mouse (Acomys cahirinus, Desmarest) was studied. The ganglion was found to be a single oval cluster of neurocytes, situated at the medial and posterior surface of the mandibular nerve just above the maxillary artery. The ganglion is composed of typical ganglionic neurons in compact arrangement without a thick connective-tissue capsule.
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