期刊
MEDICAL HYPOTHESES
卷 72, 期 3, 页码 309-310出版社
CHURCHILL LIVINGSTONE
DOI: 10.1016/j.mehy.2008.08.030
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资金
- NSF [0745084]
- National Center for research Resources (NCRR) [P20RR015640]
- Division Of Integrative Organismal Systems
- Direct For Biological Sciences [0745084] Funding Source: National Science Foundation
The pars tuberalis is a distinct subdivision of the pituitary gland but its function remains poorly understood. Suprasellar tumors in this pars tuberalis region are frequently accompanied by hyperprolactinemia. As these tumors do not immunoreact for any of the established pituitary hormones, they are classified as nonsecretory. It has been postulated that these suprasellar tumors induce hyperprolactinemia by compressing the pituitary stalk, resulting in impaired dopamine delivery to the pituitary and, consequently, disinhibition of the lactotropes. An alternative hypothesis proposed is that suprasellar tumors secrete a specific pars tuberalis factor that stimulates prolactin secretion. Hypothesized candidates are the preprotachykinin A derived tachykinins, substance P and/or neurokinin A. Published by Elsevier Ltd.
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