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11β-Hydroxysteroid Dehydrogenase Types 1 and 2 are Up- and Downregulated in Cortisol-secreting Adrenal Adenomas

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Study reveals altered expression of 11β-hydroxysteroid dehydrogenase isoenzymes in adrenal adenomas, suggesting their role in cortisol secretion.

11β-hydroxysteroid dehydrogenase types 1 and 2 are differentially expressed in cortisol-secreting adenomas compared to the normal adrenal cortex.
Higher expression of 11βHSD1 and lower expression of 11βHSD2 correlate with increased cortisol secretion in adrenal adenomas.
The methodology included semiquantitative reverse transcription-polymerase chain reaction and enzymatic activity assays to analyze isoenzyme activity.
Findings support the hypothesis that these isoenzymes may amplify cortisol secretion, highlighting their potential role in adrenal adenomas.

Mazzocchi et al. (2002) studied this question.

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Study reveals altered expression of 11β-hydroxysteroid dehydrogenase isoenzymes in adrenal adenomas, suggesting their role in cortisol secretion.