Antipsychotic drugs type 2 diabetes

Nevertheless, some atypical antipsychotic drugs, such as clozapine and olanzapine, have been linked to substantial weight gain, hyperlipidemia and type II diabetes, a new range of medically serious side-effects. 

Another serious side effect of clozapine is a risk of seizures. This mainly occurs at higher doses of the drug, and having a seizure is not necessarily a sufficient reason to stop clozapine permanently. If the clozapine has been especially helpful, an anticonvulsant can be added to protect against further seizures. Valproate (Depakote) may be best in this regard because it not only provides protection from seizures but also may help to relieve some of the symptoms of schizophrenia. Recently, it has become clear that two atypical antipsychotic drugs, clozapine and olanzapine, are associated with an increased risk for the development of type II diabetes. 

Acetazolamide is a carbonic anhydrase inhibitor that reduces aqueous humour production and is therefore indicated in glaucoma to reduce the intraocular pressure. Salbutamol is a selective, short-acting beta2-agonist used as a bronchodilator in asthma. Tolbutamide is a short-acting sulphonylurea used in type 2 (non-insulin dependent) diabetes mellitus. Chlorpromazine is an aliphatic neuroleptic antipsychotic drug used in schizophrenia. Zafirlukast is a leukotriene-receptor antagonist that is indicated in the prophylaxis of asthma but should not be used to relieve acute severe asthma. 

Whether diabetes is associated, and to what extent, with a particular antipsychotic drug or a particular type of antipsychotic drug is a matter of debate since the two most commonly used atypical antipsychotic drugs are risperidone and olanzapine, comparison of these two drugs has been a recent focus of attention. There are more case reports for clozapine and olanzapine, but the studies discussed below have reached conflicting results further information from clinical trials is needed. 

The incidence rates for six categories of adverse events of antipsychotic drug use have been compared in a retrospective cohort study of 4140 children and adolescents (mean age 10 years) and 4500 children (mean age 7.2 years) with similar service encounters but not treated with psychotropic drugs /(5 7- Six atypical and two conventional antipsychotic drugs were studied. The overall incidence/prevalence rates in the control and treated groups differed dramatically in obesity/weight gain (8.6% versus 20%), type 2 diabetes (1.9% versus... 

Metabolic and cardiovascular adverse events were further studied by the same authors in the same sample of children and adolescents [7 ]. Compared with the controls, the treated cohort had a higher prevalence of obesity (OR = 2.1), type 2 diabetes mellitus (OR = 3.2), cardiovascular conditions (OR = 2.7), and orthostatic hypotension (OR = 1.6). In the treated cohort, those who had been exposed to multiple antipsychotic drugs had a significantly higher risk of incident obesity/weight gain (OR = 2.3), type 2 diabetes mellitus (OR = 2.4), and dyslipidemia (OR = 5.3). Incident cardiovascular events were more likely with the use of conventional antipsychotic drugs (OR = 4.3) and mood stabilizers (OR = 1.3). Incident orthostatic hypotension h os more prevalent in those co-prescribed selective serotonin reuptake inhibitors (OR = 1.8) and mood stabilizers (OR = 1.3). 

Silvestre, J.S. and Prous, J. (2005) Research on adverse drug events I. Muscarinic M3 receptor binding affinity could predict the risk of antipsychotics to induce type 2 diabetes. Methods and Findings in Experimental and Clinical Pharmacology,... 

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