Sultiame

Sultiame, also known as sulthiame, is a sulfonamide and inhibitor of the enzyme carbonic anhydrase. It is used as an anticonvulsant.

Sultiame
Clinical data
Other namesSulthiame (AAN AU), sulthiame (USAN US)
AHFS/Drugs.comInternational Drug Names
Pregnancy
category
  • AU: D
    Routes of
    administration    		Oral
    ATC code
    Legal status
    Legal status
    • AU: S4 (Prescription only)
    • UK: POM (Prescription only)
    • US: ℞-only
    Pharmacokinetic data
    Bioavailability100% (oral)
    Protein binding29%
    MetabolismHepatic secretion
    Elimination half-life24 hours
    ExcretionFecal (10%) and renal (90%)
    Identifiers
    CAS Number
    PubChem CID
    DrugBank
    ChemSpider
    UNII
    KEGG
    ChEMBL
    CompTox Dashboard (EPA)
    ECHA InfoCard100.000.465
    Chemical and physical data
    FormulaC10H14N2O4S2
    Molar mass290.35 g·mol−1
    3D model (JSmol)
     NY (what is this?)  (verify)

    History

    Sultiame was first synthesised in the laboratories of Bayer AG in the mid 1950s and eventually launched as Ospolot in Europe and other markets the early 1960s. It never became a registered drug in the United States. The brand was transferred to Desitin GmbH in 1993 and is sold in several European countries, in Israel, Japan, and Australia.

    Sultiame became established as a second-line drug for treatment of partial epilepsy in the 1960s and 1970s and was often used in combination with the established anticonvulsant phenytoin. Temporal lobe seizures appeared particularly responsive to sultiame. Doubts subsequently arose as to whether sultiame has intrinsic anticonvulsant properties. After discovering sultiame's ability to raise the blood levels of phenytoin,[1] it was assumed that sultiame would only act in combination with phenytoin. This finding, together with the equivocal results of a study in the US,[1] resulted in a quick decline of sultiame's use. It was only in 1988, that the German child neurologist Hermann Doose discovered its specific effects in benign focal epilepsies of childhood.[2] Today, sulthiame is the drug of choice for benign focal epilepsies of childhood (such as benign rolandic epilepsy) in the German-speaking countries and Israel.[3][4]

    Indications

    Historically, sultiame has been used to treat partial seizures. In Australia, it is currently registered for behavioural disorders associated with epilepsy; hyperkinetic behaviour; temporal lobe epilepsy; myoclonic seizures; grand mal attacks; and Jacksonian seizures.[5] In contrast to other sulfonamide drugs, sultiame is devoid of antibacterial activity.

    Adverse effects

    The more common adverse effects are ataxia, paraesthesia of face and limbs, hyperpnoea, dyspnoea, and anorexia. Less common adverse effects include giddiness, rash, Stevens–Johnson syndrome, nausea, weight loss, leukopenia, headache, psychic changes, depression, drooling, increased pain, frequency of fits, insomnia, status epilepticus. Disturbances in calcium and vitamin D metabolism have been occasionally reported after long-term use.

    Interactions

    Sultiame taken together with primidone may lead to severe side-effects, including psychotic reactions. The addition of sulthiame to phenytoin therapy has shown to be followed by a rise in the serum levels of phenytoin. Sultiame may also lead to a rise of phenobarbitone blood levels. Alcohol must not be consumed during treatment.

    Overdose

    Vomiting, hypotension, headache, vertigo, ataxia, metabolic acidosis with hyperpnoea and catatonic state may occur. There is no specific antidote. It is not known whether dialysis may help in case of overdose.

    Synthesis
    Sultiame synthesis: B. Helferich and R. Behnisch, U.S. Patent 2,916,489 (1959).

    p-Aminobenzenesulfonamide can be alkylated by ω-chlorobutylsulfonyl chloride in base via presumed intermediate (middle), which spontaneously cyclizes to give sulthiame.

    gollark: hd!histohist <@319753218592866315> <@258639553357676545> <@509849474647064576> <@854350605702660106>
    gollark: hd!histohist <@854350605702660106> <@509849474647064576>
    gollark: ++data list
    gollark: I had a network issue there, but the server does NOT run on my laptop so who knows.
    gollark: Oh no, just Google beeing bees.

    References
    1. Hansen JM, Kristensen M, Skovsted L (March 1968). "Sulthiame (Ospolot) as inhibitor of diphenylhydatoin metabolism". Epilepsia. 9 (1): 17–22. doi:10.1111/j.1528-1157.1968.tb04954.x. PMID 4386877.
    2. Doose H, Baier WK, Ernst JP, Tuxhorn I, Völzke E (October 1988). "Benign partial epilepsy--treatment with sulthiame". Developmental Medicine and Child Neurology. 30 (5): 683–4. doi:10.1111/j.1469-8749.1988.tb04809.x. PMID 2906619.
    3. Debus OM, Kurlemann G (February 2004). "Sulthiame in the primary therapy of West syndrome: a randomized double-blind placebo-controlled add-on trial on baseline pyridoxine medication". Epilepsia. 45 (2): 103–8. doi:10.1111/j.0013-9580.2004.19003.x. PMID 14738417.
    4. Koepp MJ, Patsalos PN, Sander JW (August 2002). "Sulthiame in adults with refractory epilepsy and learning disability: an open trial". Epilepsy Research. 50 (3): 277–82. doi:10.1016/s0920-1211(02)00054-2. PMID 12200218.
    5. Pharmalab Pty Ltd. Product Information Ospolot (Sulthiame).
    This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.