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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Mccann, S. M. Breakefield, X. O. Coffey, R. J. Hill, D. F. Sena-esteves, M. Costa, M. E. Ojeda, S. R. Rage, F. |
| Description | Author Affiliation: Rage F ( Division of Neuroscience, Oregon Regional Primate Research Center/Oregon Health Sciences University, Beaverton 97006, USA.); |
| Abstract | Precocious puberty of cerebral origin is a poorly understood disorder of human sexual development, brought about by the premature activation of those neurons that produce luteinizing hormone-releasing hormone (LHRH), the neuropeptide controlling sexual maturation. An increased production of transforming growth factor alpha (TGF alpha) in the hypothalamus has been implicated in the mechanism underlying both normal and precocious puberty. We have now used two gene delivery systems to target TGF alpha overexpression near LHRH neurons in immature female rats. Fibroblasts infected with a retroviral construct in which expression of the human TGF alpha gene is constitutively driven by the phosphoglycerate kinase promoter, or transfected with a plasmid in which TGF alpha expression is controlled by an inducible metallothionein promoter, were transplanted into several regions of the hypothalamus. When the cells were in contact with LHRH nerve terminals or in the vicinity of LHRH perikarya, sexual maturation was accelerated. These results suggest that precocious puberty of cerebral origin may result from a focal disorder of TGF alpha production within the confines of the LHRH neuron microenvironment. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 6 |
| Volume Number | 94 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1997-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Gonadotropin-Releasing Hormone Physiology Hypothalamus Neurosecretory Systems Puberty, Precocious Physiopathology Sexual Maturation Transforming Growth Factor Alpha 3T3 Cells Transplantation Animals Gene Transfer Techniques Mice Phosphoglycerate Kinase Genetics Plasmids Promoter Regions, Genetic Rats, Sprague-Dawley Recombinant Fusion Proteins Biosynthesis Retroviridae Transfection Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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