In Wilson's disease, a rare genetic disorder of copper metabolism, penicillamine treatment relies on its binding to accumulated copper and elimination through urine.[4]Succimer (dimercaptosuccinic acid) is increasingly used in place of penicillamine.[5]
In cystinuria, a hereditary disorder in which high urine cystine levels lead to the formation of cystine stones, penicillamine binds with cysteine to yield a mixed disulfide which is more soluble than cystine.[8]
Penicillamine can be used as a disease-modifying antirheumatic drug (DMARD) to treat severe active rheumatoid arthritis in patients who have failed to respond to an adequate trial of conventional therapy,[10] although it is rarely used today due to availability of TNF inhibitors and other agents, such as tocilizumab and tofacitinib. Penicillamine works by reducing numbers of T-lymphocytes, inhibiting macrophage function, decreasing IL-1, decreasing rheumatoid factor, and preventing collagen from cross-linking.
John Walshe first described the use of penicillamine in Wilson's disease in 1956.[22] He had discovered the compound in the urine of patients (including himself) who had taken penicillin, and experimentally confirmed that it increased urinary copper excretion by chelation. He had initial difficulty convincing several world experts of the time (Denny-Brown and Cumings) of its efficacy, as they held that Wilson's disease was not primarily a problem of copper homeostasis but of amino acid metabolism, and that dimercaprol should be used as a chelator. Later studies confirmed both the copper-centered theory and the efficacy of D-penicillamine. Walshe also pioneered other chelators in Wilson's such as triethylene tetramine and tetrathiomolybdate.[23]
Penicillamine has been used in rheumatoid arthritis since the first successful case in 1964.[25]
References
1 2 3 4 5 6 "Penicillamine". The American Society of Health-System Pharmacists. Archived from the original on 21 December 2016. Retrieved 8 December 2016.
↑ World Health Organization model list of essential medicines: 21st list 2019. Geneva: World Health Organization. 2019. hdl:10665/325771. WHO/MVP/EMP/IAU/2019.06. License: CC BY-NC-SA 3.0 IGO.
↑ Peisach J, Blumberg WE (March 1969). "A mechanism for the action of penicillamine in the treatment of Wilson's disease". Molecular Pharmacology. 5 (2): 200–209. doi:10.1016/S0026-895X(25)14659-2. PMID4306792.
↑ Grasedyck K (1988). "D-penicillamine--side effects, pathogenesis and decreasing the risks". Zeitschrift für Rheumatologie. 47 (Suppl 1): 17–19. PMID3063003.
↑ Birker PJ, Freeman HC (October 1977). "Structure, properties, and function of a copper(I)-copper(II) complex of D-penicillamine: pentathallium(I) μ8-chloro-dodeca(D-penicillaminato)-octacuprate(I)hexacuprate(II) n-hydrate". Journal of the American Chemical Society. 99 (21): 6890–6899. doi:10.1021/ja00463a019. PMID903530.
↑ Jaffe IA (September 1964). "Rheumatoid Arthritis with Arteritis; Report of a Case Treated with Penicillamine". Annals of Internal Medicine. 61: 556–563. doi:10.7326/0003-4819-61-3-556. PMID14218939.
External links
"Penicillamine". Drug Information Portal. U.S. National Library of Medicine. Archived from the original on 28 June 2019.
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