Comparison of in vitro susceptibility of Sarcoptes scabiei var.hominis to topical 5%permethrin and topical 1% ivermectin
DOI:
https://doi.org/10.66344/jpad.26.2.2016.49Keywords:
Scabies, Sarcoptes scabiei, ivermectin, permethrin, in vitro susceptibilityAbstract
Objective: To compare the in vitro susceptibility of Sarcoptes scabiei var.hominis to 5% permethrin and 1% ivermectin.Methods: A randomized, controlled trial was conducted in OPD, Dermatology Department, Military Hospital, Rawalpindi, Pakistan over a period of six months from December 17, 2014 to June 16, 2015.A total of 80 mites from 80 patients were taken. Mites were randomly allocated to two groups: group A (5% permethrin) and group B (1% ivermectin). 5% permethrin and 1% ivermectin were applied in a thin film over a glass slide. Live mites were gently transferred to the glass slide. These were inspected microscopically for leg movements at an hourly interval for 6 hours. Death was declared once all leg movements had ceased. All mites which died within 6 hours were considered as susceptible to drug, while mites having active leg movements even after 6 hours were considered as non-susceptible.Results: There were 35 (84.5%) mites which showed invitro susceptibility in the group A (5% permethrin), whereas all the mites from group B (1% ivermectin) were susceptible.Conclusion: The in vitro susceptibility was statistically significant (p=0.021) in both the groups. 1% ivermectin was better than 5% permethrin in terms of invitro susceptibility.References
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