Analgesic activity of allopurinol and febuxostat in experimental animals

Background: Currently, two classes of analgesics, nonsteroidal anti-inflammatory drugs (NSAIDs) and opioid analgesics are used to manage pain in different clinical situations. Chronic uses of these drugs have various adverse effects like gastric ulceration/bleeding, analgesic nephropathy and respiratory depression, physical dependence, addiction, respectively. Xanthine oxidase inhibitors, used for chronic gout, might have a role in alleviation of pain, as per literature survey. Hence, the present study was carried out to evaluate the potential analgesic activity of allopurinol and febuxostat in different experimental models.Methods: The analgesic activity of allopurinol and febuxostat was assessed by employing two different experimental pain models-tail flick latency model in rats for central analgesia and acetic acid induced writhing model in mice for peripheral analgesia and was compared with tramadol and aspirin.Results: Allopurinol and febuxostat produced significant central and peripheral analgesic effects as is evident from increase in reaction time in tail flick test and inhibition in number of writhes in acetic acid induced writhing test.Conclusions: The results of the present study demonstrate marked analgesic effect of allopurinol and febuxostat

Bronchoprotective effect of Zingiber officinale roscoe (Ginger) in guinea pigs

Background: To evaluate the bronchoprotective effect of aqueous extract of Zingiber officinale (AZO) in guinea pigs and compare the same with that of standard drugs.Methods: Guinea pigs of either sex weighing between 350 to 450 Grams were randomly divided into 13 groups, each group containing 6 animals. Bronchospasm was induced by placing guinea pigs in histamine exposition chamber and exposing them to either 0.25% of histamine acid phosphate or 10% acetyl choline through a nebuliser under 40mm Hg pressure. The time for development of asphyxia was noted. After two and half hours, the animals were administered orally with vehicle / drugs as per the following: Gr I- Normal saline 1ml/100 Grams, Gr II- Salbutamol 1.6mg/kg, Gr III- Chlorpheniramine maleate 0.8mg/kg, Gr IV to Gr VI- AZO 200, 400, and 800mg/kg, Gr VII- AZO 200mg/kg and Salbutamol 0.8mg/kg. For acetylcholine-induced Bronchospasm Gr III animals received atropine 2mg/kg and Gr VII was not taken, rest others remaining the same. After 1 hour of treatment, the animals were again exposed to histamine or acetyl choline aerosol. The exposition time for each animal was again noted and mean increase or decrease in exposition time were noted. The data were subjected to stastical analysis by using paired ‘t’ test. Percentage of protection was also calculated.Results: AZO at all the doses studied (except 200mg/kg), showed highly significant increase in exposition time against histamine-induced bronchospasm. Combination of AZO (200mg/kg) with salbutamol (0.8mg/kg) also produced augmented effect. But against Acetylcholine induced bronchospasm, AZO did not produce any significant protective effect at any of the doses.Conclusions: AZO produced significant dose dependant bronchoprotection against histamine induced bronchospasm which might be due to antihistaminic action

Drug utilization pattern of antimicrobials in intensive care unit of a tertiary care teaching hospital

Background: The intensive care unit is a setting where the multiple medications are prescribed to patients. Antimicrobials are heavily prescribed in the ICUs, which in turn enhance the risk of antimicrobial resistance, increase the side effects and increases the cost of treatment. Drug utilization study is a component of medical auditing that aims to monitor and evaluate the drug prescription patterns and to suggest necessary modifications in the prescribing practices to achieve rational therapeutic practice.Methods: A cross-sectional study was conducted in which data of patients admitted to ICU during the period from June 2019 to August 2019 was collected from the Medical Record Section of the hospital. Drug utilization pattern of antimicrobials in ICU was analyzed.Results: Out of 90 patients, 60 were males and 30 were females. The average duration of stay in ICU was 7.53 days. The most common antibiotic prescribed was ceftriaxone followed by piperacillin and tazobactam with DDD/100 bed days of 24.2 and 17.3 respectively.Conclusions: In this study, the results appeared to be similar to those reported in previous studies. However, prescription protocols need to be addressed to guide appropriate use of antimicrobials in the ICU setting. Therefore, it is necessary to conduct drug utilization research to understand the drug consumption and for implementation of protocols to improve the quality of healthcare.

Analgesic activity of allopurinol and febuxostat in experimental animals

Background: Currently, two classes of analgesics, nonsteroidal anti-inflammatory drugs (NSAIDs) and opioid analgesics are used to manage pain in different clinical situations. Chronic uses of these drugs have various adverse effects like gastric ulceration/bleeding, analgesic nephropathy and respiratory depression, physical dependence, addiction, respectively. Xanthine oxidase inhibitors, used for chronic gout, might have a role in alleviation of pain, as per literature survey. Hence, the present study was carried out to evaluate the potential analgesic activity of allopurinol and febuxostat in different experimental models.Methods: The analgesic activity of allopurinol and febuxostat was assessed by employing two different experimental pain models-tail flick latency model in rats for central analgesia and acetic acid induced writhing model in mice for peripheral analgesia and was compared with tramadol and aspirin.Results: Allopurinol and febuxostat produced significant central and peripheral analgesic effects as is evident from increase in reaction time in tail flick test and inhibition in number of writhes in acetic acid induced writhing test.Conclusions: The results of the present study demonstrate marked analgesic effect of allopurinol and febuxostat