Prostaglandin G2: Difference between revisions

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'''Prostaglandin G2''' ('''PGG2''') is a type of [[prostaglandin]] that is a precursor to other prostaglandins. It is produced from [[arachidonic acid]] by the enzyme [[cyclooxygenase]] (COX).
{{DISPLAYTITLE:Prostaglandin G2}}


== Structure and Properties ==
== Prostaglandin G2 ==
 
[[File:Prostaglandin_G2.svg|thumb|right|Chemical structure of Prostaglandin G2]]
Prostaglandin G2 is a 20-carbon molecule that contains a five-membered ring, two side chains, and a peroxide bridge. The peroxide bridge is a key feature of PGG2, as it is involved in the conversion of PGG2 to [[Prostaglandin H2|PGH2]].
'''Prostaglandin G2''' (PGG2) is a type of [[prostaglandin]], which are a group of physiologically active lipid compounds having diverse hormone-like effects in animals. Prostaglandins are derived enzymatically from the fatty acid [[arachidonic acid]].


== Biosynthesis ==
== Biosynthesis ==
Prostaglandin G2 is synthesized from [[arachidonic acid]] by the action of the enzyme [[cyclooxygenase]] (COX). This enzyme catalyzes the conversion of arachidonic acid to PGG2, which is then further converted to [[prostaglandin H2]] (PGH2) by the same enzyme. The conversion involves the addition of two molecules of oxygen to form the endoperoxide bridge characteristic of prostaglandins.


The biosynthesis of PGG2 begins with the release of arachidonic acid from the cell membrane by the enzyme [[Phospholipase A2|phospholipase A2]]. The arachidonic acid is then converted to PGG2 by the enzyme cyclooxygenase. This reaction involves the addition of two oxygen molecules to arachidonic acid, forming a peroxide bridge.
== Function ==
 
Prostaglandin G2 itself is an unstable intermediate and is rapidly converted to other prostaglandins and [[thromboxanes]] that have various biological activities. These compounds are involved in the regulation of inflammation, blood flow, the formation of blood clots, and the induction of labor.
== Role in the Body ==
 
PGG2 is a precursor to other prostaglandins, which are involved in a variety of physiological processes. These include the regulation of [[Inflammation|inflammation]], [[Blood clot|blood clotting]], and [[Smooth muscle|smooth muscle]] contraction. PGG2 itself does not have any known biological activity, but its derivatives play key roles in these processes.


== Clinical Significance ==
== Clinical Significance ==
The pathway involving prostaglandin G2 is a target for nonsteroidal anti-inflammatory drugs ([[NSAIDs]]), which inhibit the cyclooxygenase enzyme and thus reduce the production of prostaglandins. This inhibition is the basis for the anti-inflammatory, analgesic, and antipyretic effects of NSAIDs.


The production of PGG2 is a target for [[Nonsteroidal anti-inflammatory drug|nonsteroidal anti-inflammatory drugs]] (NSAIDs), which inhibit the cyclooxygenase enzyme and thus reduce the production of prostaglandins. This can help to reduce inflammation and pain. However, because prostaglandins also play a role in protecting the stomach lining and regulating blood clotting, inhibition of prostaglandin production can also lead to side effects such as stomach ulcers and increased risk of bleeding.
== Related Compounds ==
 
* [[Prostaglandin H2]]
== See Also ==
* [[Thromboxane A2]]
* [[Prostacyclin]]


== Related Pages ==
* [[Prostaglandin]]
* [[Prostaglandin]]
* [[Cyclooxygenase]]
* [[Arachidonic acid]]
* [[Arachidonic acid]]
* [[Cyclooxygenase]]
* [[Nonsteroidal anti-inflammatory drug]]
* [[Nonsteroidal anti-inflammatory drug]]


[[Category:Prostaglandins]]
[[Category:Prostaglandins]]
[[Category:Biomolecules]]
[[Category:Physiology]]
{{biochemistry-stub}}

Latest revision as of 11:32, 15 February 2025


Prostaglandin G2[edit]

Chemical structure of Prostaglandin G2

Prostaglandin G2 (PGG2) is a type of prostaglandin, which are a group of physiologically active lipid compounds having diverse hormone-like effects in animals. Prostaglandins are derived enzymatically from the fatty acid arachidonic acid.

Biosynthesis[edit]

Prostaglandin G2 is synthesized from arachidonic acid by the action of the enzyme cyclooxygenase (COX). This enzyme catalyzes the conversion of arachidonic acid to PGG2, which is then further converted to prostaglandin H2 (PGH2) by the same enzyme. The conversion involves the addition of two molecules of oxygen to form the endoperoxide bridge characteristic of prostaglandins.

Function[edit]

Prostaglandin G2 itself is an unstable intermediate and is rapidly converted to other prostaglandins and thromboxanes that have various biological activities. These compounds are involved in the regulation of inflammation, blood flow, the formation of blood clots, and the induction of labor.

Clinical Significance[edit]

The pathway involving prostaglandin G2 is a target for nonsteroidal anti-inflammatory drugs (NSAIDs), which inhibit the cyclooxygenase enzyme and thus reduce the production of prostaglandins. This inhibition is the basis for the anti-inflammatory, analgesic, and antipyretic effects of NSAIDs.

Related Compounds[edit]

Related Pages[edit]