Sains Malaysiana 47(8)(2018): 1725–1730
http://dx.doi.org/10.17576/jsm-2018-4708-11
Antiviral Properties of Orthosiphon stamineus Aqueous Extract in Herpes Simplex Virus Type 1 Infected Cells
(Sifat Antivirus Akues Ekstrak Orthosiphon stamineus
dalam Sel Terjangkit Virus Herpes Simpleks Jenis 1)
NUR SUHANA MOHAMAD RIPIM, NURAINI FAZIL, SAIDATUL NADRAH KHOLID IBRAHIM, ADIBAH AHAMAD BAHTIAR, YIP CHEE WAI, NAZLINA IBRAHIM
& NOREFRINA SHAFINAZ MD NOR*
School of Biosciences and Biotechnology, Faculty
of Science and Technology, Universiti Kebangsaan Malaysia, 43600 UKM Bangi,
Selangor Darul Ehsan, Malaysia
Diserahkan: 14 September 2017/Diterima:
17 April 2018
ABSTRACT
A study was conducted to investigate
the antiviral activity of aqueous extracts from Orthosiphon
stamineus (OS). Extraction was done using different parts of OS.
The whole plant except root (WPOS), leaves (LOS)
and flowers (FOS) of OS were extracted using aqueous
extraction method. Cytotoxicity was assessed using 3-(4,5-dimethylthiazol-2,5-diphenyl
tetrazolium bromide (MTT) assay. Plaque reduction assays were
carried out to evaluate the antiviral activity of OS extract
against herpes simplex virus type 1 (HSV-1). These include post-treatment,
pre-treatment and virucidal assays. High antiviral activity was
observed in post-treatment and virucidal assay with 100% reduction
of HSV-1
plaque at 0.39 mg/mL in LOS, FOS and
WPOS.
In pre-treatment assay, 79%, 84% and 97% plaque reduction using
the same concentration was observed in FOS, LOS and
WPOS,
respectively. In conclusion, this study showed that OS aqueous
extract has promising potential to be explored as anti-HSV-1
agent regardless of the mode of treatment.
Keywords: Cytotoxicity;
ethnopharmacology; MTT; plaque reduction assay; virucidal
ABSTRAK
Suatu kajian telah dijalankan untuk menguji aktiviti antivirus bagi
ekstrak akuas daripada Orthosiphon stamineus (OS). Pengekstrakan
telah dijalankan dengan menggunakan bahagian OS yang
berbeza. Seluruh tumbuhan kecuali akar
(WPOS),
daun (LOS) dan bunga (FOS) OS telah
diekstrak melalui kaedah pengekstrakan akues. Ujian kesitotoksikan
telah dijalankan dengan asai 3-(4,5- dimetiltiazol-2,5-diphenil
tetrazolium bromida (MTT). Asai pengurangan
plak telah dilakukan untuk mengkaji aktiviti antivirus ekstrak OS
terhadap virus herpes simpleks jenis 1 (HSV-1). Antaranya ialah asai pasca-rawatan, pra-rawatan dan virusid.
Aktiviti antivirus yang tinggi telah diperhatikan dalam asai virusid
dan pasca-rawatan dengan 100% pengurangan plak HSV-1
pada 0.39 mg/mL bagi LOS, FOS dan
WPOS.
Dalam pra-rawatan, sebanyak 79%, 84% dan 97% pengurangan plak pada
kepekatan ekstrak yang sama telah dicerap masing-masing dalam FOS, LOS dan
WPOS
. Secara keseluruhan, kajian ini
telah menunjukkan bahawa ekstrak OS mempunyai potensi yang tinggi
untuk dieksplotasi sebagai agen anti-HSV-1
tanpa mengira mod rawatan.
Kata
kunci: Asai pengurangan plak; etnofarmakologi; kesitotoksikan; MTT;
virusid
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*Pengarang untuk surat-menyurat; email: efrina@ukm.edu.my
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