Mazen Emad Mohamed Wardany

Mazen Emad Mohamed Wardany

Sunway University | | Degree: BSc (Hons) Biomedicine
Investigating new anti-amoebic agents to treat amoebic infections by combining Fluconazole with graphene oxide

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Figure#1: (Amoebicidal Assay) Compounds effect on cell count of A. castellanii Trophozoites.

This Assay was performed to evaluate the potential of the compounds to kill or inhibit the growth of the amoeba. 

As shown in Figure 1 Amoebicidal Assay, Fluconazole has slightly more effect on the A. castellanii Trophozoites than Fluconazole loaded with graphene oxide.

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Figure#2: (Amoebistatic Assay) Compounds effect on cell count of A. castellanii Trophozoites.

This Assay was performed to evaluate the potential of the compounds to slow down or stop the growth of the amoeba. 

As shown in Figure 2 for Amoebistatic Assay, Fluconazole loaded with graphene oxide has slightly more effect than Fluconazole in eradicating A. castellanii Trophozoites.

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Figure#3: (Excystation Assay) Compounds effect on cell count of A. castellanii Trophozoites.

This Assay was performed to evaluate the potential of the compounds to eliminate or prevent the excystation process (Cyst to Trophozoite) of the amoeba. 

As shown in Figure 3 for Excystation Assay, Fluconazole loaded with graphene oxide has slightly more effect than Fluconazole in eradicating A. castellanii Trophozoites.

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Figure#4: (Encystation Assay) Compounds effect on cell count of A. castellanii Cysts.

This Assay was performed to evaluate the potential of the compounds to eliminate or prevent the encystation process (Trophozoite to Cyst) of the amoeba.

As shown in  Figure 4 for Encystation Assay, Fluconazole loaded with graphene oxide has slightly more effect than Fluconazole in eradicating A. castellanii Cysts.

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Figure#5: Calculated cell viability % of the Compounds on human HaCaT cells.

This Assay was performed to measure the metabolic activity of cells, which can be used as an indicator of cell viability, proliferation, and cytotoxicity. It was used to evaluate the effects of the compounds on the human HaCaT cells. 

In Figure 5 for MTT Assay, Fluconazole loaded with graphene oxide has proven to be drastically less toxic towards HaCaT cells in comparison with Fluconazole. The Cell Viability % of Fluconazole is 27.36% while Fluconazole loaded with graphene oxide remains ahead of Fluconazole with a Cell Viability % of 99.36%. 

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References

  • Li, X., Robinson, S. M., Gupta, A., Saha, K., Jiang, Z., Moyano, D. F., Sahar, A., Riley, M. A., & Rotello, V. M. (2014). Functional Gold Nanoparticles as Potent Antimicrobial Agents against Multi-Drug-Resistant Bacteria. ACS Nano8(10), 10682–10686. https://doi.org/10.1021/nn5042625

 

  • ‌Aqeel, Y., Siddiqui, R., Anwar, A., Shah, M. R., & Khan, N. A. (2016). Gold Nanoparticle Conjugation Enhances the Antiacanthamoebic Effects of Chlorhexidine. Antimicrobial Agents and Chemotherapy60(3), 1283–1288. https://doi.org/10.1128/aac.01123-15

 

 

  • Visvesvara, G. S., Moura, H., & Schuster, F. L. (2007). Pathogenic and opportunistic free-living amoebae:Acanthamoebaspp.,Balamuthia mandrillaris,Naegleria fowleri, andSappinia diploideaFEMS Immunology & Medical Microbiology50(1), 1–26. https://doi.org/10.1111/j.1574-695x.2007.00232.x

 

  • ‌Asadi Shahi, S., Roudbar Mohammadi, S., Roudbary, M., & Delavari, H. (2019). A new formulation of graphene oxide/fluconazole compound as a promising agent against Candida albicans. Progress in Biomaterials8(1), 43–50. https://doi.org/10.1007/s40204-019-0109-6

 

  • Hoseini-Ghahfarokhi, M., Mirkiani, S., Mozaffari, N., Abdolahi Sadatlu, M. A., Ghasemi, A., Abbaspour, S., Akbarian, M., Farjadain, F., & Karimi, M. (2020). Applications of Graphene and Graphene Oxide in Smart Drug/Gene Delivery: Is the World Still Flat? International Journal of NanomedicineVolume 15, 9469–9496. https://doi.org/10.2147/ijn.s265876

 

 

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Mazen Emad Mohamed Wardany

Sunway University | | Degree: BSc (Hons) Biomedicine
Investigating new anti-amoebic agents to treat amoebic infections by combining Fluconazole with graphene oxide

Abstract

Amoebic infection has post a health challenge on human health due to the lack of effective anti-amoebic drugs. Current anti-amoebic treatment regime relies on the repurposing of anti-fungal drugs such as fluconazole. However, current treatment regime is tedious and it has severe side effects. Also, the cyst stage of Acanthamoeba castellanii confers resistance to the drug treatment and causes relapse of amoebic infection. In this study, the hypothesis is that the fluconazole conjugated with L-cysteine and graphene oxide functionalized nanomaterial will be more potent than the original fluconazole compound. We perform various amoebic assays such as  amoebicidal, amoebistatic, excystation, and encystation assays. In addition, we perform MTT assay to determine the viability of the human HaCaT cell upon treatment of various compounds. The results indicate that L-CYS-GO-FLZ has similar anti-amoebicidal and anti-encystation efficacy as fluconazole alone, but has stronger anti-amoebistatic and anti-excystation. Furthermore, L-CYS-GO-FLZ confers lower toxicity on human HaCaT cells compared to treatment by fluconazole. Hence, these results have supported the potential of this modified version of fluconazole (Graphene Oxide functionalized nanomaterial loaded with fluconazole) as an effective anti-amoebic agent to treat amoebic infections.

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Mazen Emad Mohamed Wardany