Diacerein

Last updated
Diacerein
Diacerein.svg
Diacerein 3D ball.png
Clinical data
Other namesDiacetylrhein; Diacerhein; 2-Anthracenecarboxylic acid, 4,5-bis(acetyloxy)-9,10-dihydro-9,10-dioxo-; 2-Anthroic acid, 9,10-dihydro-4,5-dihydroxy-9,10-dioxo-, diacetate; 9,10-Dihydro-4,5-dihydroxy-9,10-dioxo-2-anthroic acid, diacetate
AHFS/Drugs.com International Drug Names
Pregnancy
category
  • Lacking information
Routes of
administration
Oral
ATC code
Pharmacokinetic data
Protein binding 99%
Metabolism Hepatic: deacetylation to rhein, later glucuronidation and sulfate conjugation
Elimination half-life 4 to 5 hours
Excretion Renal (30%)
Identifiers
  • 4,5-diacetyloxy-9,10-dioxo-anthracene-2-
    carboxylic acid
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard 100.033.904 OOjs UI icon edit-ltr-progressive.svg
Chemical and physical data
Formula C19H12O8
Molar mass 368.297 g·mol−1
3D model (JSmol)
Solubility in water Practically insoluble in water 0.01 mg/mL (20 °C)
  • O=C(Oc3cccc2C(=O)c1cc(cc(OC(=O)C)c1C(=O)c23)C(=O)O)C
  • InChI=1S/C19H12O8/c1-8(20)26-13-5-3-4-11-15(13)18(23)16-12(17(11)22)6-10(19(24)25)7-14(16)27-9(2)21/h3-7H,1-2H3,(H,24,25) Yes check.svgY
  • Key:TYNLGDBUJLVSMA-UHFFFAOYSA-N Yes check.svgY
   (verify)

Diacerein (INN), also known as diacetylrhein, is a slow-acting medicine of the class anthraquinone used to treat joint diseases such as osteoarthritis (swelling and pain in the joints). [1] It works by inhibiting interleukin-1 beta. An updated 2014 Cochrane review found diacerein had a small beneficial effect on pain. [2] Diacerein-containing medications are registered in some European Union and Asian countries[ which? ] and included as a treatment option on several international therapeutic guidelines.[ which? ][ citation needed ]

Contents

Synthesis

There are many known methods synthesis of diacerein, most of which use aloin as a starting material. It's hydroxyl groups undergo acetylation, and then the intermediates are oxidised with chromic anhydride using acetic acid as a solvent. [3]

A less common method uses rhein as the starting compound. It involves diacetylation of the hydroxyl groups at positions C4 and C5 of rhein. [4]

Pharmacology

Diacerein works by blocking the actions of interleukin-1 beta, a protein involved in the inflammation and destruction of cartilage that plays a role in the development of symptoms of degenerative joint diseases such as osteoarthritis. Due to its specific mode of action, which does not involve the inhibition of prostaglandin synthesis, diacerein has been shown to have anti-osteoarthritis and cartilage stimulating properties in vitro and animal models.[ citation needed ]

Side effects

The most common side effects of diacerein treatment are gastrointestinal symptoms including soft stools and diarrhea. [5] These are generally mild to moderate and occur more frequently in the first 2 weeks, and lessen with continued treatment. Based on review by European Medicines Agency (EMA), diacerein-containing medicines use is restricted due to severe diarrhoea and liver disorders in patients. [6] [7]

An uncommon side effect is hepatic adverse events (most frequently reported as liver function test abnormalities). These have been described as mild/moderate cases of elevated liver enzymes in the blood.

Mild skin reactions (rash, pruritus and eczema) have also been reported with diacerein treatment.

Discoloration of urine (yellow or pink) is another side effect of diacerein. This effect is due to the elimination of rhein metabolites via the urine and no clinical significance has been found; it may also be dependent on general fluid intake.

Special warning

In 2014 the European Medicines Agency (EMA’s) Pharmacovigilance and Risk Assessment Committee (PRAC) performed a review of diacerein-containing medicines over concerns about its gastrointestinal and liver effects. As a result, the PRAC has introduced additional proposals to manage diacerein’s risks and was satisfied that with new restrictions diacerein’s benefit on pain outweighs the side effects for osteoarthritis treatment. [8] The following recommendations have been made around the use of diacerein:

The PRAC concluded that the benefit-risk balance of diacerein-containing medicinal products remained favourable in the symptomatic treatment osteoarthritis, subject to the agreed changes to the product information and conditions.

Dosage and administration

The recommended starting dose is 50 mg once daily with evening meal for the first 2 to 4 weeks of treatment, after which the recommended daily dose is 50 mg twice daily. [8]

The treatment should be taken with food, one with breakfast and the other with evening meal. The capsules must be swallowed intact, without opening them, together with a glass of water.

See also

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References

  1. Gouvas H (2011). Use of Sodium Hyaluronate in the treatment of Osteoarthritis. Greece.{{cite book}}: CS1 maint: location missing publisher (link)
  2. Fidelix TS, Macedo CR, Maxwell LJ, Fernandes Moça Trevisani V (February 2014). "Diacerein for osteoarthritis". The Cochrane Database of Systematic Reviews (2): CD005117. doi:10.1002/14651858.CD005117.pub3. PMC   10712695 . PMID   24515444.
  3. US8324411B2,Salvi, Annibale; Nardi, Antonio& Maiorana, Stefanoet al.,"Process for the preparation of DIACEREIN",published 2011-01-20,issued 2012-12-04
  4. EP0928781B1,Napoli, Guido Di,"Process for the preparation of rhein and its diacyl derivatives",published 1999-07-14,issued 2002-03-27
  5. Pavelka K, Bruyere O, Cooper C, et al. Diacerein: Benefits, Risks and Place in the Management of Osteoarthritis. An Opinion-Based Report from the ESCEO. Drugs & Aging 2016;33:75-85
  6. Panova E, Jones G (March 2015). "Benefit-risk assessment of diacerein in the treatment of osteoarthritis". Drug Safety. 38 (3): 245–52. doi:10.1007/s40264-015-0266-z. PMID   25652235. S2CID   13880003.
  7. Fidelix TS, Macedo CR, Maxwell LJ, Fernandes Moça Trevisani V (February 2014). "Diacerein for osteoarthritis". The Cochrane Database of Systematic Reviews (2): CD005117. doi:10.1002/14651858.CD005117.pub3. PMC   10712695 . PMID   24515444.
  8. 1 2 "Diacerein-containing medicines for oral administration". 2018-09-17.