3 research outputs found
Π‘ΠΈΠ½ΡΠ΅Π·Π° ΠΈ Π±ΠΈΠΎΠ»ΠΎΡΠΊΠ° Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡ Π°Π»ΠΊΠΈΠ»ΡΠΈΠΎ ΠΈ Π°ΡΠΈΠ»ΡΠΈΠΎ Π΄Π΅ΡΠΈΠ²Π°ΡΠ° ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»Ρ ΠΈΠ½ΠΎΠ½Π°
Biological activity of 2-tert-butyl-1,4-benzoquinone (TBQ) and its derivatives, 2-tert-butyl-5-(2-propylthio)-1,4-benzoquinone, 2-tert-butyl-5- -(propylthio)-1,4-benzoquinone, 2-tert-butyl-5,6-(ethylenedithio)-1,4-benzoquinone, 2-tert-butyl-5-(phenylthio)-1,4-benzoquinone and 2-tert-butyl-6-(phenylthio)- 1,4-benzoquinone, were tested for their antioxidant, antibacterial, toxic, cytotoxic and genotoxic potential. Using the DPPH test, all derivatives showed good antioxidant activity, better than ascorbic acid, and the 2-tert- -butyl-5-(propylthio)-1,4-benzoquinone derivative showed the strongest effect. Better antibacterial potential was observed against Gram-positive bacteria in the broth microdilution method in which the 2-tert-butyl-5-(phenylthio)-1,4- -benzoquinone derivative showed the strongest activity (MIC = 15.6 ΞΌM). The results of toxicity tests, using the Brine shrimp test, indicated that the derivatives lose their toxic potential compared to TBQ, except for 2-tert-butyl-6- -(phenylthio)-1,4-benzoquinone, which showed a 3 times stronger effect. Cytotoxicity was assessed by the MTT assay in 24 and 72 h treatments in MRC-5, HS 294T and A549 cell lines in threefold decreasing gradient (11, 33 and 100 ΞΌM). Modifications potentiate the cytotoxic effect, and the strongest effect was observed with the 2-tert-butyl-5,6-(ethylendithio)-1,4-benzoquinone derivative. In addition, the genotoxic potential was examined in the MRC-5 cell line using the comet assay. All tested derivatives of TBQ showed a genotoxic effect at all applied subtoxic concentrations. In general, the chemical modifications of TBQ enhanced its biological activity.ΠΡΠΏΠΈΡΠ°Π½Π° ΡΠ΅ Π±ΠΈΠΎΠ»ΠΎΡΠΊΠ° Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡ 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π° (TBQ) ΠΈ ΡΠ΅Π³ΠΎΠ²ΠΈΡ
Π΄Π΅ΡΠΈΠ²Π°ΡΠ°: 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-5-(ΠΈΠ·ΠΎΠΏΡΠΎΠΏΠΈΠ»ΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π°, 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-5-(ΠΏΡΠΎΠΏΠΈΠ»ΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π°, 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-5,6-(Π΅ΡΠΈΠ»Π΅Π½Π΅Π΄ΠΈΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π°, 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»- -5-(ΡΠ΅Π½ΠΈΠ»ΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π° ΠΈ 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-6-(ΡΠ΅Π½ΠΈΠ»ΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π° ΡΠΊΡΡΡΡΡΡΡΠΈ ΡΠΈΡ
ΠΎΠ² Π°Π½ΡΠΈΠΎΠΊΡΠΈΠ΄Π°ΡΠΈΠ²Π½ΠΈ, Π°Π½ΡΠΈΠ±Π°ΠΊΡΠ΅ΡΠΈΡΡΠΊΠΈ, ΡΠΎΠΊΡΠΈΡΠ½ΠΈ, ΡΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΈ ΠΈ Π³Π΅Π½ΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π». ΠΡΠΈΠΌΠ΅Π½ΠΎΠΌ DPPH ΡΠ΅ΡΡΠ°, ΡΠ²ΠΈ Π΄Π΅ΡΠΈΠ²Π°ΡΠΈ ΡΡ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ Π΄ΠΎΠ±ΡΡ Π°Π½ΡΠΈΠΎΠΊΡΠΈΠ΄Π°ΡΠΈΠ²Π½Ρ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡ, Π±ΠΎΡΡ ΠΎΠ΄ Π°ΡΠΊΠΎΡΠ±ΠΈΠ½ΡΠΊΠ΅ ΠΊΠΈΡΠ΅Π»ΠΈΠ½Π΅, Π° Π½Π°ΡΡΠ°ΡΠ΅ Π΄Π΅ΡΡΡΠ²ΠΎ ΠΏΠΎΠΊΠ°Π·Π°ΠΎ ΡΠ΅ Π΄Π΅ΡΠΈΠ²Π°Ρ 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-5-(ΠΏΡΠΎΠΏΠΈΠ»ΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½. ΠΠΎΡΠΈ Π°Π½ΡΠΈΠΌΠΈΠΊΡΠΎΠ±Π½ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΡΠ΅ ΠΏΡΠΈΠΌΠ΅ΡΠ΅Π½ ΠΏΡΠΎΡΠΈΠ² ΠΡΠ°ΠΌ-ΠΏΠΎΠ·ΠΈΡΠΈΠ²Π½ΠΈΡ
Π±Π°ΠΊΡΠ΅ΡΠΈΡΠ° ΠΌΠ΅ΡΠΎΠ΄ΠΎΠΌ ΠΌΠΈΠΊΡΠΎΠ΄ΠΈΠ»ΡΡΠΈΡΠ΅ Ρ Π±ΡΡΠΎΠ½Ρ, Π³Π΄Π΅ ΡΠ΅ Π΄Π΅ΡΠΈΠ²Π°Ρ 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-5-(ΡΠ΅Π½ΠΈΠ»ΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½ ΠΏΠΎΠΊΠ°Π·Π°ΠΎ Π½Π°ΡΡΠ°ΡΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡ (MIC = 15,6 ΞΌΠ). Π Π΅Π·ΡΠ»ΡΠ°ΡΠΈ ΠΈΡΠΏΠΈΡΠΈΠ²Π°ΡΠ° ΡΠΎΠΊΡΠΈΡΠ½ΠΎΡΡΠΈ, ΠΏΡΠΈΠΌΠ΅Π½ΠΎΠΌ ΡΠ΅ΡΡΠ° Π½Π° Artemia salina, ΠΏΠΎΠΊΠ°Π·ΡΡΡ Π΄Π° Π΄Π΅ΡΠΈΠ²Π°ΡΠΈ Π³ΡΠ±Π΅ ΡΠΎΠΊΡΠΈΡΠ½ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» Ρ ΠΎΠ΄Π½ΠΎΡΡ Π½Π° TBQ, ΠΎΡΠΈΠΌ 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-6-(ΡΠ΅Π½ΠΈΠ»ΡΠΈΠΎ)- -1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π°, ΠΊΠΎΡΠΈ ΡΠ΅ ΠΏΠΎΠΊΠ°Π·Π°ΠΎ 3 ΠΏΡΡΠ° ΡΠ°ΡΠΈ Π΅ΡΠ΅ΠΊΠ°Ρ. Π¦ΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΎΡΡ ΡΠ΅ ΠΈΡΠΏΠΈΡΠ°Π½Π° ΠΠ’Π’ ΡΠ΅ΡΡΠΎΠΌ Ρ ΡΡΠ΅ΡΠΌΠ°Π½ΠΈΠΌΠ° ΠΎΠ΄ 24 ΠΈ 72 h Π½Π° ΡΠ΅Π»ΠΈΡΡΠΊΠΈΠΌ Π»ΠΈΠ½ΠΈΡΠ°ΠΌΠ° MRC-5, HS 294T ΠΈ A549 Ρ ΡΡΠΎΡΡΡΡΠΊΠΎ ΠΎΠΏΠ°Π΄Π°ΡΡΡΠ΅ΠΌ Π³ΡΠ°Π΄ΠΈΡΠ΅Π½ΡΡ (11, 33 ΠΈ 100 ΞΌΠ). ΠΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ΅ ΠΏΠΎΡΠ°ΡΠ°Π²Π°ΡΡ ΡΠΈΡΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΈ Π΅ΡΠ΅ΠΊΠ°Ρ, Π° Π½Π°ΡΡΠ°ΡΠΈ Π΅ΡΠ΅ΠΊΠ°Ρ ΡΠ΅ ΠΏΡΠΈΠΌΠ΅ΡΠ΅Π½ ΠΊΠΎΠ΄ Π΄Π΅ΡΠΈΠ²Π°ΡΠ° 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-5,6-(Π΅ΡΠΈΠ»Π΅Π½Π΄ΠΈΡΠΈΠΎ)-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π°. ΠΠΎΡΠ΅Π΄ ΡΠΎΠ³Π°, Π³Π΅Π½ΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΈ ΠΏΠΎΡΠ΅Π½ΡΠΈΡΠ°Π» ΡΠ΅ ΠΈΡΠΏΠΈΡΠ°Π½ Π½Π° ΡΠ΅Π»ΠΈΡΡΠΊΠΎΡ Π»ΠΈΠ½ΠΈΡΠΈ MRC-5 ΠΊΠΎΠΌΠ΅Ρ ΡΠ΅ΡΡΠΎΠΌ. Π‘Π²ΠΈ ΠΈΡΠΏΠΈΡΠΈΠ²Π°Π½ΠΈ Π΄Π΅ΡΠΈΠ²Π°ΡΠΈ ΡΡ ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ Π³Π΅Π½ΠΎΡΠΎΠΊΡΠΈΡΠ½ΠΈ Π΅ΡΠ΅ΠΊΠ°Ρ ΠΏΡΠΈ ΡΠ²ΠΈΠΌ ΠΏΡΠΈΠΌΠ΅ΡΠ΅Π½ΠΈΠΌ ΡΡΠ±ΡΠΎΠΊΡΠΈΡΠ½ΠΈΠΌ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΠΈΡΠ°ΠΌΠ°. ΠΠ΅Π½Π΅ΡΠ°Π»Π½ΠΎ, Ρ
Π΅ΠΌΠΈΡΡΠΊΠ΅ ΠΌΠΎΠ΄ΠΈΡΠΈΠΊΠ°ΡΠΈΡΠ΅ ΠΏΠΎΠ±ΠΎΡΡΠ°Π²Π°ΡΡ Π±ΠΈΠΎΠ»ΠΎΡΠΊΡ Π°ΠΊΡΠΈΠ²Π½ΠΎΡΡ 2-ΡΠ΅ΡΡ-Π±ΡΡΠΈΠ»-1,4-Π±Π΅Π½Π·ΠΎΡ
ΠΈΠ½ΠΎΠ½Π°
Antioxidant activity and total phenolic and flavonoid contents of Salvia amplexicaulis Lam. extracts
This study was designed to examine the in vitro antioxidant DPPH free
radical-scavenging activity, and the total phenolic and flavonoid content of
ethanol and methanol extracts of Salvia amplexicaulis Lam. in the whole plant
and different parts, leaves, stems and flowers. The largest amounts of
extract yield were obtained from the flowers, 14.14% and 12.00 % (w/w) in the
ethanol of methanol extracts, respectively. The ethanol extract of leaves
(16.07 ΞΌg/ml) and methanol extract of the whole plant (21.28 ΞΌg/ml) showed
the highest activity against the DPPH radical. The ethanol extract of the
leaves was the richest in phenols (222.40 mg GAE/g) and flavonoids (49.81 mg
QE/g), whereas the methanol extract of the whole plant contained the highest
amount of phenolics (180.89 mg GAE/g) and flavonoids (38.15 mg QE/g). A very
strong linear correlation between antioxidant activity and the phenolic
content of the extracts was established. The obtained results suggest that S.
amplexicaulis could be regarded as an important source of natural
antioxidants. [Projekat Ministarstva nauke Republike Srbije, br. 173029