Pharmacognosy Magazine

ORIGINAL ARTICLE
Year
: 2019  |  Volume : 15  |  Issue : 64  |  Page : 352--358

Primary skin irritation and dermal sensitization assay: In vivo evaluation of the essential oil from Piper sarmentosum Roxb.


Nor Zafirah Abu Bakar1, Hidayatulfathi Othman1, Nor Fadilah Rajab1, Siti Balkis Budin1, Ahmad Fuad Shamsuddin2, Nor Azwani Mohamed Nor1 
1 Biomedical Science Program, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
2 Faculty of Pharmacy and Health Sciences, Universiti Kuala Lumpur Royal College of Medicine Perak, Ipoh, Perak, Malaysia

Correspondence Address:
Hidayatulfathi Othman
Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300
Malaysia

Background: Piper sarmentosum Roxb. is a traditional medicine which can also be consumed as a vegetable. Despite the availability of a variety of toxicological data on extracts of this plant, to our knowledge, until now, no dermal toxicological tests have been conducted. The aim of the present study was, therefore, to carry out in vivo assays to verify the safety of application of P. sarmentosum extract gel on the skin. Materials and Methods: The essential oils were extracted from the dried leaves of P. sarmentosum by hydrodistillation and then formulated into a gel. An in vivo skin irritation test of the P. sarmentosum extract gel was then conducted on albino rabbits, and an in vivo sensitization test was carried out on albino guinea pigs. Results: For both abraded and non-abraded sites, the calculated primary irritation index value for P. sarmentosum was 2.55, indicating that topical use of a gel with P. sarmentosum (1.55%) is nonirritative. However, a dermal sensitization assay revealed mild sensitization effects in 1 out of 10 guinea pigs in response to the application. Histological analysis revealed a slight thickening of the stratum corneum epidermis layer in the guinea pigs' skin. Conclusion: Together, these results indicate that the gel with P. sarmentosum is safe for application on the skin, but may lead to sensitization upon repeated application.


How to cite this article:
Abu Bakar NZ, Othman H, Rajab NF, Budin SB, Shamsuddin AF, Mohamed Nor NA. Primary skin irritation and dermal sensitization assay: In vivo evaluation of the essential oil from Piper sarmentosum Roxb. Phcog Mag 2019;15:352-358


How to cite this URL:
Abu Bakar NZ, Othman H, Rajab NF, Budin SB, Shamsuddin AF, Mohamed Nor NA. Primary skin irritation and dermal sensitization assay: In vivo evaluation of the essential oil from Piper sarmentosum Roxb. Phcog Mag [serial online] 2019 [cited 2020 Sep 23 ];15:352-358
Available from: http://www.phcog.com/article.asp?issn=0973-1296;year=2019;volume=15;issue=64;spage=352;epage=358;aulast=Abu;type=0