Cochrane Db Syst Rev
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To estimate the short-term efficacy and toxicity of antimalarials for the treatment of rheumatoid arthritis (RA). ⋯ Hydroxychloroquine appears to be efficacious for the treatment of RA. Its overall effect appears to be moderate, but its low toxicity profile should be considered when treating patients with RA.
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Oligo-astheno-teratospermia (sperm of low concentration, reduced motility and increased abnormal morphology) of unknown cause is common and the need for treatment is felt by patients and doctors alike. As a result, a variety of empirical, non-specific treatments have been used in an attempt to improve semen characteristics and fertility. One suggested treatment for idiopathic oligo- and/or asthenospermia is the administration of kallikrein (kallidinogenase), a kinin-releasing enzyme (or kininogenase). The kinin biological system is complex and involves kininogen (the substrate), kininogenases (the activating enzymes), kinins (the effectors) and kininases (the inactivating enzymes). All four components of the kinin system have been found in the genitalia and in semen. Kallikrein releases 2 major kinins, kallidin and bradykinin, from seminal plasma kininogens. Activated kinins in semen affect sperm motility and metabolism. In vitro addition of kallikrein to semen has been shown to have a positive effect on sperm motility, sperm velocity, cervical mucus penetration, penetration of zona-free hamster eggs and post-thaw survival and motility rate after semen cryopreservation. The latter observation, however, was not confirmed in a more recent comparison of motility stimulants for cryopreserved semen using computerised sperm motion analysis. In vitro treatment of semen with kallikrein has been employed in a clinical context during sperm preparation prior to insemination. Although the kinin system may also be involved in the regulation of spermatogenesis in vivo, a clear mechanism of action is missing. Multiple suggestions on how an increase in kinin levels in the genital tract influences spermatogenesis at the testicular levels have been made by various authors. ⋯ Methodological characteristics of trials Baseline characteristics of the studied groups Outcomes: Pregnancy rates, semen parameters (sperm concentration, motility and morphology), endocrinology (serum FSH, testosterone and oestradiol)
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Cochrane Db Syst Rev · Jan 2000
ReviewAldose reductase inhibitors for the prevention and treatment of diabetic peripheral neuropathy.
To assess the efficacy of aldose reductase inhibitors in the prevention, reversal or delay in the progression of diabetic peripheral neuropathy. ⋯ Although aldose reductase inhibitor treatment has been demonstrated to diminsh the reduction in motor nerve conduction velocity, the clinical relevance of such a change in this outcome measure is uncertain. There was no effect in terms of this outcome measure in the smaller sensory fibres, degeneration of which is primarily responsible for the most common neuropathic syndrome associated with diabetes, that of severe pain and loss of sensation in the extremity leading in some cases to ulceration and eventual amputation.
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Traveller's diarrhoea is a syndrome frequently encountered in persons crossing an international boundary. Diarrhoea can lead to significant discomfort and interference with travel plans. Bacterial pathogens are a frequent cause of this syndrome. Several antibiotics have been tested for efficacy in reducing the duration and severity of the illness. ⋯ Antibiotic treatment is associated with shorter duration of diarrhoea but higher incidence of side-effects. Trials generally do not report duration of post-treatment diarrhoea using time-to-event analyses, and should do.
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Cochrane Db Syst Rev · Jan 2000
ReviewNewer atypical antipsychotic medication versus clozapine for schizophrenia.
Clozapine is an atypical antipsychotic drug, which is claimed to have superior efficacy and to cause fewer movement disorders. However, clozapine carries a significant risk of serious blood disorders. Newer atypical antipsychotics are safer alternatives that might share the benefits of clozapine. It is thus of interest to compare the effectiveness of newer atypical antipsychotics with the effectiveness of clozapine. ⋯ The equal effectiveness and tolerability of new atypical drugs in comparison with clozapine is not yet demonstrated. Lack of statistical power to determine the comparative efficacy and effectiveness of newer atypical drugs makes it difficult to judge whether newer drugs are more effective, less effective or equivalent. Trials of sufficient power, with longer duration, measuring clinically important outcomes, are needed to assess the true comparative clinical effectiveness, tolerability and cost effectiveness of newer drugs in relation to clozapine.