We recently reported involvement of oxidative stress in anxiety-like behavior of rats. Others in separate studies have demonstrated a link between oxidative stress and hypertension as well as with type 2 diabetes/insulin resistance. In the present study, we have tested a putative role of oxidative stress in anxiety-like behavior, hypertension and insulin resistance using a rat model of oxidative stress. Oxidative stress in rats was produced by xanthine (0.1%; drinking water) and xanthine oxidase (5U/kg; i.p.). X+XO-treated rats had increased plasma and urinary 8-isoprostane levels (a marker of oxidative stress) and increased malondialdehyde (MDA) levels in the hippocampus and amygdala as compared to control rats. Serum corticosterone (a systemic marker of stress and anxiety) levels also increased with X+XO treatment. Moreover, anxiety-like behavior measured via open-field and light-dark exploration behavior tests significantly increased in X +XO-treated rats. Mean arterial blood pressure measured in anesthetized rats increased in X+XO-treated compared to control rats. Furthermore, plasma insulin but not glucose levels together with homeostasis model assessment (HOMA), an index of insulin resistance, were higher in X+XO-treated rats. Our studies suggest that oxidative stress is a common factor that link anxiety-like behavior, hypertension and insulin resistance in rats.

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Background: Adverse drug reactions (ADRs) are the major cause of drug related morbidity and mortality. Pharmacovigilance is the science that plays an important role in the reduction of ADRs. Voluntary reporting of ADRs by healthcare professionals is an important tool in the success of pharmacovigilance program, but the same are scantly reported due to lack of awareness and knowledge among the physicians. So, the present study was conducted to evaluate the knowledge, attitude and practice (KAP) regarding ADR reporting among healthcare professionals at a tertiary care hospital.Methods: A questionnaire-based study containing 25 questions (knowledge- 18, attitude -2 and practice- 5) was conducted in 70 prescribers and time allotted to complete it was 1 week. Statistical analysis was done by using Graph Pad Prism version 6.01.Results: Out of 70 prescribers, only 50 (71.43%) responded. ADR reporting was considered very important by almost all of them, but actual practice was lacking as only 36% of consultants had reported any ADR. The higher grading was given to causes most important for reporting were patient safety, to identify safe drug and new ADRs. The main reasons for under-reporting were unavailability of reporting forms when needed, uncertain association and lack of knowledge about reporting procedure.Conclusions: The prescribers are aware of the importance of ADR reporting, but lack of awareness and knowledge are most common cause of under-reporting. So, there is need of pharmacovigilance awareness program to improve voluntary reporting of ADRs.

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