RESUMEN
Mycobacterium tuberculosis (MTB), the organism causing tuberculosis (TB) remains a major cause of morbidity and mortality. Plant-based drugs have been used worldwide in traditional medicines for the treatment of various diseases including tuberculosis. Medicinal plants are an important source of new antimicrobial agents and remain an attractive alternative strategy. The present study was performed to evaluate anti-MTB activity of two medicinal plants viz., Allium ascalonicum, and Allium sativum. Different concentrations of extracts of these plants were tested for their anti MTB activity against MTBH37Rv strain and the inhibitory activity was expressed as CFU inhibition, % inhibition and IC50. In our study Allium sativum showed higher anti TB activity however this bactericidal property was not signi?cantly different between each groups. The overall anti mycobacterial activity of these extracts might be attributed due to the presence of ?avonoids, saponins, steroids, terpenoids, tannins and other phytoconstituents. The extract of the plant also exhibited promising antitubercular activity.
RESUMEN
The phytochemical investigation of Vitex pinnata led to the isolation of a mixture of steroids β-sitosterol and stigmasterol (1a and 1b) and three known flavonoid identified as 5-hydroxy-3, 7, 4’-trimethoxyflavone (2), 5-hydroxy-7,4’-dimethoxy-flavone (3) and 5-hydroxy-3,3’,4’,7-tetramethoxyflavone (4). The structures of all isolated compounds were carried out by NMR and mass spectrometry. The isolated compounds were evaluated for their anti-infective activities against Trypanosoma brucei brucei and Mycobacterium marinum. Compound 1-4 showed moderate antitrypanosomal activity with MIC values of 6.25μg/ml, 19.0, 21.0 and 17.0μM, respectively while no activity observed on anti-mycobacterial. This study is the first to report the presence of three flavones and their antitrypanosomal activity from V. pinnata.
RESUMEN
Tuberculosis (TB) remains a serious health problem in many regions of the world, and the development of resistance to antibiotics by this microbe created the need for new drugs to replace those which have lost effectiveness. This study assesses the medicinal anti-Mycobacterium tuberculosis properties of natural products obtained from plants collected from Eastern Libya. In this study aqueous extracts of nine different plants were assayed for their Mycobacterium tuberculosis inhibitory activity using the BACTEC MGIT960 susceptibility test method. The aqueous extracts of Ceratonia siliqua L, Helichrysum stoechas (L.) Moench and Thymus algeriensis did not show any activity against M.tuberculosis in different concentrations. The aqueous extract of Marrubium vulgare L. from Syria showed high activity against M. tuberculosis. Marrubium alysson L., Marrubium vulgare L., Pistacia lentiscus L, Quercus coccifera L, Thymus capitatus (L.) Hoffm. & Link, showed varying degrees of activity against M. tuberculosis. The results of this study show that aqueous extracts from six different medicinal plants have different effects against M. tuberculosis in vitro.