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definitions - Cortisone

cortisone (n.)

1.a corticosteroid hormone (trade name Cortone Acetate) normally produced by the adrenal cortex; is converted to hydrocortisone

Cortisone (n.)

1.(MeSH)A naturally occurring glucocorticoid. It has been used in replacement therapy for adrenal insufficiency and as an anti-inflammatory agent. Cortisone itself is inactive. It is converted in the liver to the active metabolite HYDROCORTISONE. (From Martindale, The Extra Pharmacopoeia, 30th ed, p726)

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synonyms - Cortisone

Cortisone (n.) (MeSH)

Adreson  (MeSH)

cortisone (n.)

Cortone Acetate

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Cortisone

                   
Cortisone
Identifiers
CAS number 53-06-5 YesY
PubChem 222786
ChemSpider 193441 YesY
UNII V27W9254FZ YesY
KEGG D07749 YesY
MeSH Cortisone
ChEBI CHEBI:16962 YesY
ChEMBL CHEMBL111861 N
Jmol-3D images Image 1
Properties
Molecular formula C21H28O5
Molar mass 360.44 g/mol
Melting point

220–224 °C

 N (verify) (what is: YesY/N?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Cortisone (play /ˈkɔrtɨsn/ or /ˈkɔrtɨzn/; 17-hydroxy-11-dehydrocorticosterone) is a steroid hormone. It is one of the main hormones released by the adrenal gland in response to stress. In chemical structure, it is a corticosteroid closely related to corticosterone. It is used to treat a variety of ailments and can be administered intravenously, orally, intraarticularly, or transcutaneously. Cortisone suppresses the immune system, thus reducing inflammation and attendant pain and swelling at the site of the injury. Risks exist, in particular in the long-term use of cortisone.[1][2]

Contents

  History

Cortisone was first identified by the American chemist Edward Calvin Kendall while a researcher at the Mayo Clinic.[3] He was awarded the 1950 Nobel Prize for Physiology or Medicine along with Philip S. Hench and Tadeus Reichstein for the discovery of adrenal cortex hormones, their structures, and their functions. Cortisone was first produced commercially by Merck & Co. On September 30, 1949, Percy Julian announced an improvement in the process of producing cortisone from bile acids.[chronology citation needed] This eliminated the need to use osmium tetroxide, a rare, expensive, and dangerous chemical. In the UK in the early 1950s, John Cornforth and Kenneth Callow at the National Institute for Medical Research collaborated with Glaxo to produce cortisone from hecogenin from sisal plants.[4] Unknown at the time of the 1960 Presidential election, President John F. Kennedy took Cortisone supplements to counter the adrenal deficiency symptoms of Addison's Disease, which he denied having.[5][6]

  Production

Cortisone is one of several end-products of a process called steroidogenesis. This process starts with the synthesis of cholesterol, which then proceeds through a series of modifications in the adrenal gland (suprarenal) to become any one of many steroid hormones. One end-product of this pathway is cortisol. For cortisol to be released from the adrenal gland, a cascade of signaling occurs. Corticotropin-releasing hormone released from the hypothalamus stimulates corticotrophs in the anterior pituitary to release ACTH, which relays the signal to the adrenal cortex. Here, the zona fasciculata and zona reticularis, in response to ACTH, secrete glucocorticoids, in particular cortisol. In the peripheral tissues, cortisol is converted to cortisone by the enzyme 11-beta-steroid dehydrogenase. Cortisol has much greater glucocorticoid activity than cortisone, and, thus, cortisone can be considered an inactive metabolite of cortisol. However, 11-beta-steroid dehydrogenase can catalyze the reverse reaction as well, and, thus, cortisone is also the inactive precursor molecule of the active hormone cortisol. Cortisone is activated through hydrogenation of the 11-keto-group, and cortisol is, thus, sometimes referred to as hydrocortisone.[7]

  Effects and uses

Cortisone, a glucocorticoid, and adrenaline are the main hormones released by the body as a reaction to stress. They elevate blood pressure and prepare the body for a fight or flight response.

A cortisone injection can also be used to give short-term pain relief and reduce the swelling from inflammation of a joint, tendon, or bursa in, for example, the joints of the knee, elbow, and shoulder.[8]

Cortisone may also be used to deliberately suppress immune response in persons with autoimmune diseases or following an organ transplant to prevent transplant rejection. The suppression of the immune system may also be important in the treatment of inflammatory conditions such as severe IgE-mediated allergies.[9]

Last, cortisone is a common treatment for a severe sore throat that occurs commonly with EBV infectious mononucleosis. It is important to note that cortisone does not help lessen the duration of the virus, and is used purely to increase the comfort of a patient with trouble speaking or swallowing as a result of the mononucleosis-induced swollen throat.

  Side-effects

Oral use of cortisone has a number of potential side-effects: hyperglycemia, insulin resistance, diabetes mellitus, osteoporosis, anxiety, depression, amenorrhoea, cataracts and glaucoma, among other problems.[1][2][citation needed]

  See also

  References

  Notes


  Bibliography

  External links


   
               

 

All translations of Cortisone


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