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3.
Anat Anz ; 167(1): 47-55, 1988.
Article in English | MEDLINE | ID: mdl-3189861

ABSTRACT

The following paraganglia in the carotid bifurcations regions of spontaneously hypertensive rats (SHR) were studied: Endoneural paraganglia within the external carotid nerve, the carotid sinus nerve, the glossopharyngeal nerve, and the pharyngeal branch of the vagus nerve, the so-called periadventitial type I cells, and so-called miniglomera. Number and distribution of these paraganglia vary among different individuals. After chronically hypobaric hypoxia the volume of these paraganglia was increased but their number remained unchanged. The increase of volume was dependent on the duration of hypoxia. There were no differences between young and old SHR when the hypoxia-time was the same.


Subject(s)
Hypoxia/pathology , Oxygen/metabolism , Paraganglia, Nonchromaffin/anatomy & histology , Animals , Paraganglia, Nonchromaffin/pathology , Rats , Rats, Inbred SHR
4.
Am J Otolaryngol ; 7(5): 366-9, 1986.
Article in English | MEDLINE | ID: mdl-3777359

ABSTRACT

Recurrent laryngeal nerves (RLNs) from human autopsy material were collected and prepared for light microscopy. Within five of eight investigated RLNs, paraganglia-like organs were found, the mean cross-sectional area of which was estimated to be 0.03 mm2. These organs were composed of cells resembling the type I and type II cells of the carotid body. The possible function of laryngeal nerve paraganglia is discussed.


Subject(s)
Laryngeal Nerves/anatomy & histology , Paraganglia, Nonchromaffin/anatomy & histology , Recurrent Laryngeal Nerve/anatomy & histology , Cell Nucleolus/ultrastructure , Cell Nucleus/ultrastructure , Cytoplasm/ultrastructure , Humans , Paraganglia, Nonchromaffin/cytology , Paraganglia, Nonchromaffin/physiology , Recurrent Laryngeal Nerve/physiology
6.
Cell Tissue Res ; 232(2): 349-56, 1983.
Article in English | MEDLINE | ID: mdl-6883447

ABSTRACT

An inventory of the distribution of thoracic glomus tissue (thoracic chemoreceptor tissue, aortic bodies) has been derived from serial sections in foetal, newborn and adult rats. In contrast to other common experimental species, such as the cat and dog, aortic bodies are an inconstant feature and, on the whole, are scarce in the rat. These morphological findings correlate well with experimental studies, indicating an absence or paucity of thoracic chemoreceptor activity in the rat. The results are discussed in terms of their physiological and pathophysiological implications and a revised model of the peripheral arterial chemoreceptor system is presented.


Subject(s)
Aortic Bodies/anatomy & histology , Chemoreceptor Cells/anatomy & histology , Paraganglia, Nonchromaffin/anatomy & histology , Rats/anatomy & histology , Animals , Animals, Newborn/anatomy & histology , Aortic Bodies/embryology , Aortic Bodies/pathology , Atrophy/veterinary , Cats/anatomy & histology , Dogs/anatomy & histology , Female , Hypertrophy/veterinary , Hypoxia/pathology , Hypoxia/veterinary , Male , Rats, Inbred Strains , Rodent Diseases/pathology , Vagus Nerve/physiology
9.
Acta Anat (Basel) ; 101(2): 110-9, 1978.
Article in English | MEDLINE | ID: mdl-645340

ABSTRACT

In the buffalo, the left aortic nerve ramifies in the periarterial connective tissue between the ventral surface of the aortic arch and the truncus pulmonalis. The right aortic nerve ramifies over the dorsal and right aspects of the aorta ascendens near its origin. The histograms of myelinated fibres of both left and right aortic nerve are distinctly unimodal with peak around 4-6 micron (64.2-67.8%). The left aortic body is situated in the periarterial connective tissue between the ventral surface of the aortic arch and the truncus pulmonalis, while the right aortic body is located in the tunica adventitia of the dorsal and right aspects of the aorta ascendens near its origin. The greatest sagittal section area of the left aortic body is 0.102 +/- 0.009 mm2 and that of the right aortic body is 0.041 +/- 0.002 mm2. The organ is highly vascular. The mean size of the glomus cells from the left aortic body is 7.68 +/- 0.9 micron x 9.37 +/- 0.13 micron (short diameter x long diameter), whereas the corresponding value for the right aortic body is 7.84 +/- 0.14 micron x 9.86 +/- 0.21 micron; and their density values are (11,417 +/- 301.7)/mm2 and (9,839 +/- 213.3)/mm2 respectively.


Subject(s)
Aorta/innervation , Aortic Bodies/anatomy & histology , Buffaloes/anatomy & histology , Paraganglia, Nonchromaffin/anatomy & histology , Animals , Aortic Bodies/cytology , Male , Nerve Fibers, Myelinated/cytology
10.
Experientia ; 34(1): 111-3, 1978 Jan 15.
Article in English | MEDLINE | ID: mdl-620720

ABSTRACT

Brightly fluorescent paraganglia were found in the retroperitoneal tissue of adult man. The histofluorescence properties of the paraganglia indicate the presence of tryptophyl peptides, which might be of endocrine importance.


Subject(s)
Chromaffin System , Paraganglia, Chromaffin , Paraganglia, Nonchromaffin , Animals , Chromaffin System/anatomy & histology , Histocytochemistry , Humans , Paraganglia, Chromaffin/anatomy & histology , Paraganglia, Nonchromaffin/anatomy & histology , Peptides/analysis , Rats , Retroperitoneal Space/anatomy & histology , Spectrometry, Fluorescence , Tryptophan/analysis
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