ANTI-INFLAMMATORY ACTIVITY OF PHENOLIC COMPOUNDS FROM TRANSFORMED ROOTS OF ARTEMISIA ANNUA L. AND A. VULGARIS L. A. Bashylau 1 , I. Zhavoronok 2 , A. Basalai 2 , P. Shabunya 3 , S. Fatykhova 3 1 Central Botanical Garden of the NAS of Belarus, Minsk, Republic of Belarus 2 Institute of Physiology of the NAS of Belarus, Minsk, Republic of Belarus 3 Institute of Bioorganic Chemistry of the NAS of Belarus, Minsk, Republic of Belarus Ultrasonic extraction at elevated temperature can be used to increase the efficiency
of extracting biologically active compounds from plant materials. Artemisia annua L.
and Artemisia vulgaris L. are known for their medicinal properties, which are
associated with their composition. One of the promising ways to obtain pharmaceutical
raw materials is the biotechnology of "hairy" roots, however, the substances obtained
from transformed plants should be examined for the composition and activity of
metabolites.
The objective of the work was to evaluate the composition of phenolic compounds in
the extracts of the transformed roots of Artemisia annua and A. vulgaris, obtained using
ultrasonic treatment, and to identify the anti-inflammatory effect of the extracts in the
experiment.
Materials and methods. The total content of phenolic compounds was determined
according to the Folin-Ciocalteu method, the content of extractive substances was
determined according to the State Pharmacopoeia of the Republic of Belarus. For HPLC
analysis, the Agilent 1200 chromatograph with a diode array detector and the Agilent
6410 mass selective detector was used. The study of anti-inflammatory activity was
performed on male Wistar rats. Escherichia coli lipopolysaccharide was used to
simulate a febrile response in the experiment.
Results. With the help of sonication, extracts of transformed roots of Artemisia
annua and A. vulgaris were obtained. The composition and content of phenolic
compounds were determined, the presence of caffeylquinic acids and caffeic acid
derivatives in extracts of two species of wormwood was established. Tests were carried
out on laboratory animals with an experimental systemic inflammatory process.
Conclusion. Ultrasonic extraction of transformed roots of Artemisia annua and A.
vulgaris was effective in extracting phenolic compounds. In the obtained extracts, 8
compounds were identified, mainly caffeylquinic acids and caffeic acid derivatives were
identified.
The study of the effect of extracts on deep body temperature in rats in normal
conditions and with systemic inflammation led to the conclusion that the biologically
active substances of wormwood have a modulating effect on thermoregulatory
reactions. Intragastric administration of an extract of transformed roots of Artemisia
annua 40 min before the systemic administration of E. coli LPS caused changes in the
febrile response pattern, namely, it weakened the severity of phase II fever.
The work was carried out within the framework of the international project N
B21UKRG-005 (project manager H. Shutava).
The authors are grateful to N. A. Matveeva, Doctor of Biological Sciences, for
providing the culture of transformed roots for research.