| Altered thymic endocrine activity along with impairments of peripheral zinc metabolism and T-lymphocyte populations are associated with myasthenia gravis: a follow-up study. | |
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MedLine Citation:
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PMID: 9258245 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Thymic endocrine activity was assessed by a bioassay to determine the basal activity of thymulin (TH), a zinc dependent hormone, and its in vitro reactivation in two different age groups of patients with myasthenia gravis (MG). Before thymectomy, basal TH plasma levels were increased in patients over the age of 50 years. Plasma zinc levels were increased in all patients, this increment being very high in old patients. One year after thymectomy both TH and zinc plasma levels decreased. While zinc plasma levels were within the normal ranges for their respective ages, TH levels were lower in young and higher in old patients than in age comparable controls. Young patients with MG showed increased CD3,DR positive peripheral T-cells as well as lymphocytes with the CD16,CD56 phenotype. An increment of CD3 positive cells along with CD4 and CD16,CD56 positive cells were found in older patients. Thymectomy partially affected blood lymphocyte representation only in young patients, since CD3,DR T-cells decreased one year after surgery. No significant variations in T-cell representation were found in old patients after thymectomy. Immunosuppression in thymectomized patients did not significantly affected TH and zinc plasma levels. Very high levels of TH and the presence of additional alterations in T-lymphocyte subsets in old patients suggested that differential age related pathogenetic immunological mechanisms might be associated with the disease. |
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Authors:
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F Licastro; E Mocchegiani; N Fabris; R Rinaldi; G Bontempo; C Tonon; M Schiavina; A N Costa; R D'Alessandro |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of neuroimmunology Volume: 77 ISSN: 0165-5728 ISO Abbreviation: J. Neuroimmunol. Publication Date: 1997 Aug |
Date Detail:
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Created Date: 1997-08-26 Completed Date: 1997-08-26 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8109498 Medline TA: J Neuroimmunol Country: NETHERLANDS |
Other Details:
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Languages: eng Pagination: 153-60 Citation Subset: IM; X |
Affiliation:
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Department of Experimental Pathology, School of Medicine, University of Bologna, Italy. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged CD4 Lymphocyte Count Female Follow-Up Studies Humans Immunosuppressive Agents / therapeutic use Lymphocyte Count Male Middle Aged Myasthenia Gravis / immunology*, metabolism*, surgery T-Lymphocyte Subsets / immunology*, pathology Thymectomy Thymic Factor, Circulating / drug effects, metabolism* Thymus Gland / immunology*, metabolism*, surgery Zinc / blood* |
| Chemical | |
Reg. No./Substance:
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0/Immunosuppressive Agents; 7440-66-6/Zinc; 78922-62-0/Thymic Factor, Circulating |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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