Isolation, identification, and pathological effects of beach sand bacterial extract on human skin keratinocytes in vitro

PeerJ

article

Fazli Subhan¹  Raheem Shahzad²  Isfahan Tauseef¹  Kashif Syed Haleem¹  Atta-Ur Rehman³  Sajid Mahmood³  In-Jung Lee² 

[1]Department of Microbiology, Hazara University

[2]School of Applied Biosciences, Kyungpook National University

[3]Department of Zoology, Hazara University

[4]Research Institute for Dok-do and Ulleung-do Island, Kyungpook National University

关键词: Sequencing;    Skin;    Pathology;    Bacteria;    Beach sand;   

DOI  :  10.7717/peerj.4245

学科分类：社会科学、人文和艺术（综合）

来源: Inra

【 摘 要 】

BackgroundBeaches are recreational spots for people. However, beach sand contains harmful microbes that affect human health, and there are no established methods for either sampling and identifying beach-borne pathogens or managing the quality of beach sand.MethodThis study was conducted with the aim of improving human safety at beaches and augmenting the quality of the beach experience. Beach sand was used as a resource to isolate bacteria due to its distinctive features and the biodiversity of the beach sand biota. A selected bacterial isolate termed FSRS was identified as Pseudomonas stutzeri using 16S rRNA sequencing and phylogenetic analysis, and the sequence was deposited in the NCBI GenBank database under the accession number MF599548. The isolated P. stutzeri bacterium was cultured in Luria–Bertani growth medium, and a crude extract was prepared using ethyl acetate to examine the potential pathogenic effect of P. stutzeri on human skin. A human skin keratinocyte cell line (HaCaT) was used to assess cell adhesion, cell viability, and cell proliferation using a morphological analysis and a WST-1 assay.ResultThe crude P. stutzeri extract inhibited cell adhesion and decreased cell viability in HaCaT cells. We concluded that the crude extract of P. stutzeri FSRS had a strong pathological effect on human skin cells.DiscussionBeach visitors frequently get skin infections, but the exact cause of the infections is yet to be determined. The beach sand bacterium P. stutzeri may, therefore, be responsible for some of the dermatological problems experienced by people visiting the beach.

【 授权许可】

CC BY