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Calcium channel blocking drugs for Duchenne muscular dystrophy

Duchenne muscular dystrophy is a progressive wasting condition of muscles which starts in early childhood, leads to dependence on a wheelchair by the age of thirteen and respiratory failure by late teens. The condition is due to absence of dystrophin, a large muscle protein that has several functions within muscle cells. We know that calcium molecules build up in the muscle cells of people with Duchenne muscular dystrophy and this is associated with cell death. The rationale behind this review was to ascertain whether randomised controlled trials using drugs that block calcium entry into muscle would result in a reduction in progression of the condition. Although these trials were conducted over ten years ago a systematic review was not done at that time, and so a potential effect of calcium blocking drugs (antagonists) on the course of DMD may have been missed. If it were to exist, calcium antagonists might be an effective treatment in their own right or, more likely, could be used in combination with newer treatments such as corticosteroids or potential treatments such as gene related therapies.

Cochrane Database of Systematic Reviews: Plain Language Summaries [Internet] - John Wiley & Sons, Ltd.

Version: 2012

Calcium channel blockers for neuroleptic‐induced tardive dyskinesia

Antipsychotic medication is associated with adverse effects, including tardive dyskinesia which is characterised by abnormal, repetitive, involuntary facial movements. Calcium channel blockers, originally developed for use in cardiovascular disorders, have been experimentally used as a treatment for tardive dyskinesia. There is currently no good quality evidence to support their use.

Cochrane Database of Systematic Reviews: Plain Language Summaries [Internet] - John Wiley & Sons, Ltd.

Version: 2013

Non surgical therapy for anal fissure.

Anal fissure is a painful ulcer usually occurring in the posterior midline of the skin just outside the entry to the rectum. Its persistence is due to spasm of the internal sphincter muscle. The typical pain of this condition is pain on moving one's bowels that persists for some time afterward. Relief with healing of chronic fissures until very recently has been achieved by surgical procedures aimed at ablation of the sphincter spasm. Because of the risk of incontinence resulting from surgery, medical alternatives for surgery have been sought. Among the older medications, bran is effective in preventing recurrence of acute fissure. Local application of muscle relaxing therapy is effective in healing chronic anal fissure, though not as well as surgery, and with considerable risk of adverse events during therapy. There is a Cochrane review related to this review dealing only with surgical procedures.

Cochrane Database of Systematic Reviews: Plain Language Summaries [Internet] - John Wiley & Sons, Ltd.

Version: 2012

Systematic Reviews in PubMed

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