ArticleCardiovascular and interventional radiology
Selective bilateral blood sampling from the inferior petrosal sinus in Cushing's disease: effects of corticotropin-releasing factor and thyrotropin-releasing hormone on pituitary secretion.
Article in Cardiovascular and interventional radiology. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors at 1 institution in 1 country.
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Abstract
We sought to enhance the sensitivity of selective bilateral blood sampling to determine adrenocorticotropin (ACTH) and prolactin levels in the inferior petrosal sinus (IPS) by administering two stimulatory agents--corticotropin-releasing factor (CRF) and thyrotropin-releasing hormone (TRH). We then determined the ACTH and prolactin levels in the IPS of 10 patients with Cushing's disease. After peripheral administration of both CRF and TRH, ACTH levels were significantly higher on the tumor side in all patients. The prolactin level was significantly higher on the tumor side when CRF or TRH was used to stimulate pituitary secretion. Postsurgical immunohistochemistry studies revealed production of both ACTH and prolactin in tumor cells, explaining the abnormal secretion pattern of the pituitary adenoma. The use of CRF and TRH may therefore improve the reliability of selective blood sampling and tests from the IPS in those cases of Cushing's disease for which noninvasive methods have otherwise failed to clarify the diagnosis.
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