Adverse effects of carbamazepine monotherapy among patients in Nigeria: a pilot study and implications

Aim: Antiepileptic drugs do cause adverse effects, affecting patients’ quality of life, adherence and seizures. Consequently, there is a need to study this among Nigerian patients. Methods: Descriptive cross-sectional study assessing the extent of adverse effects with carbamazepine monotherapy and potential factors. Results: 54 patients (64.3%) reported no adverse effects, while 30 did. The most common adverse effects were memory problems followed by headaches, restlessness, tiredness and depression. Adverse effects were significantly higher in females, with females with low educational levels having significantly higher rates. Dose, co-medications, seizure control and comorbid conditions did not significantly affect adverse effects. Conclusion: Perception of adverse effects was common in patients on carbamazepine monotherapy, more common in women than men. Educational status was important in women.

Erythema multiforme vs. DRESS syndrome associated with the combined use of lamotrigine and cyclobenzaprine: a case report

Lamotrigine is FDA-approved as a maintenance treatment of bipolar disorder, but its common off-label uses include bipolar depression and antidepressant augmentation in patients with major depressive disorder. Among other adverse effects, cutaneous reactions, particularly erythema multiforme, are cited as concerns during treatment with this medication. In order to minimize the risk of cutaneous side effect, efforts have been made to identify factors associated with a higher rate of lamotrigine-induced rash. We report here a case of Drug Reaction with Eosinophilia and Systemic Symptoms apparently precipitated by the associated use of lamotrigine and cyclobenzaprine.

Impact of IL-33 on PGD2 Generation by Activated Human Cord Blood-Derived Mast Cell: Lack of Effect on Tryptase Release

Mast cells are important not only in allergic reactions, but also in inflammation and are involved in a variety of responses including the immediate release of potent inflammatory mediators after activation by cross-linking of FcεRI molecules. Prostaglandin D2 (PGD2) is a major cyclooxygenase metabolite of arachidonic acid produced by mast cells and it is released following allergen challenge in allergic diseases. IL-33 is an iflammatory cytokine which is critically involved in the regulation of in vitro and in vivo cyclooxygenase production, providing a potential therapeutic target for inflammatory disorders. In this study, using human derived umbelical cord blood mast cells, we show that IL-33 (50 ng/ml), and calcium ionophore A 23187 (0.5 μg/ml), compound 48/80 (10−5 M) or anti-IgE (10 μg/ml), enhaced the production of PGD2 and this effect was inhibited by indomethacin. However, IL-33 was unable to induce tryptase release in these cells. These effects confirm the inflammatory property of IL-33 by stimulating PGD2 but not tryptase in human mast cells. The inhibitory effect of this new cytokine may have a potential therapeutic response in allergic and inflammatory diseases.

Endothelial cells, cholesterol, cytokines, and aging

It has been reported that high levels of cholesterol and triglycerides are associated with increased risk of developing atherosclerosis and shorter life. In fact, vascular endothelial dysfunction occurs during the human aging process. Accumulation of lipids in vascular endothelium activates leukocytes to produce cytokines and chemokines which recruit macrophages. On the other hand, macrophages augment inflammatory response and secrete vascular endothelial growth factor, a key cytokine that mediates angiogenesis and inflammatory response. In addition, hyperlipidaemia is one of the main risk factors for aging, hypertension and diabetes. Here, we review the interrelationship between endothelial cells, high level of cholesterol, and aging.