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Retrovirus-like sequences in Graves' disease: implications for human autoimmunity
A Ciampolillo1, V Marini, R Mirakian
1Department of Immunology, University College, Middlesex School of Medicine, London, UK.
Lancet (London, England)
|May 20, 1989
Summary
Researchers detected novel retrovirus-like sequences in the thyroid glands of Graves' disease patients. These findings suggest a potential link between this retrovirus and thyroid autoimmunity, warranting further investigation into its role.
Area of Science:
- Endocrinology
- Virology
- Immunology
Background:
- Graves' disease is an autoimmune disorder affecting the thyroid gland.
- The etiology of Graves' disease remains incompletely understood.
- Potential infectious agents have been investigated as contributing factors.
Purpose of the Study:
- To investigate the presence of human immunodeficiency virus type 1 (HIV-1) gag sequences in thyroid tissues of patients with Graves' disease.
- To explore potential associations between retroviral sequences and thyroid autoimmunity.
Main Methods:
- Southern blotting was performed on DNA extracted from thyroid glands of five Graves' disease patients.
- Two probes (720 bp and 942 bp) specific for the gag region of HIV-1 were used for hybridization.
- DNA from peripheral blood mononuclear cells, normal thyroid tissues, and other controls were also analyzed.
Main Results:
- A positive hybridization signal was detected in all five Graves' disease thyroid DNA samples using both gag HIV-1 probes.
- Hybridization signals were also observed in peripheral blood mononuclear cells of three patients, none of whom had HIV-1 antibodies.
- Negative results were obtained from normal thyroid tissues, thyroid neoplasms, and unrelated normal tissues, as well as virus-infected cell lines.
- The signal intensity and band patterns were heterogeneous and varied between thyroid glands and peripheral blood cells within individual patients.
- No correlation was found between positive signals and genetic/immunological indices or anti-thyroid drug treatment duration.
Conclusions:
- The findings suggest the presence of novel retrovirus-like sequences in the thyroid glands of Graves' disease patients.
- These retroviral sequences appear to be closely associated with thyroid autoimmunity.
- Further research is needed to characterize this novel retrovirus and elucidate its role in Graves' disease pathogenesis.
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