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Pregnenedione - Revision history
2026-04-29T17:34:16Z
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Prab at 13:09, 18 March 2025
2025-03-18T13:09:52Z
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2025-03-18T00:10:33Z
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Prab: CSV import
2025-02-10T19:51:16Z
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2024-03-02T15:33:24Z
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<p><b>New page</b></p><div>'''Pregnenedione''' is a [[steroid]] and [[precursor (chemistry)|precursor]] in the [[biosynthesis]] of most of the steroid hormones, including the [[progestogens]], [[glucocorticoids]], [[mineralocorticoids]], androgens, and [[estrogens]]. It is derived from [[cholesterol]] and is converted to [[progesterone]] by the enzyme [[3β-hydroxysteroid dehydrogenase]].<br />
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==Chemical Structure and Properties==<br />
Pregnenedione is a 21-carbon steroid. It is also known as 5-pregnen-3β-ol-20-one. The [[molecular formula]] for pregnenedione is C21H32O2. It has a molecular weight of 316.48 g/mol. <br />
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==Biosynthesis==<br />
The biosynthesis of pregnenedione involves several steps. It begins with the conversion of cholesterol to [[pregnenolone]] by the enzyme [[cholesterol side-chain cleavage enzyme]]. Pregnenolone is then converted to [[progesterone]] by the enzyme [[3β-hydroxysteroid dehydrogenase]]. <br />
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==Role in Steroid Hormone Production==<br />
Pregnenedione serves as a key intermediate in the production of several steroid hormones. These include the progestogens, glucocorticoids, mineralocorticoids, androgens, and estrogens. <br />
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==Clinical Significance==<br />
Abnormal levels of pregnenedione can be indicative of certain medical conditions. For example, elevated levels of pregnenedione can be seen in [[congenital adrenal hyperplasia]], a group of inherited disorders affecting the adrenal glands. <br />
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==See Also==<br />
* [[Steroid hormone]]<br />
* [[Biosynthesis]]<br />
* [[Cholesterol]]<br />
* [[Progesterone]]<br />
* [[3β-hydroxysteroid dehydrogenase]]<br />
* [[Congenital adrenal hyperplasia]]<br />
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[[Category:Steroids]]<br />
[[Category:Biosynthesis]]<br />
[[Category:Endocrinology]]<br />
{{Endocrinology-stub}}</div>
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