background and aims: neurons are injured under physical, chemical and pathological conditions. the effect of peripheral nervous system injuries may return as retrograde to the cell body of neurons in central nervous system resulting in brain and spinal cord degeneration. because of high content of camphor and borneol, achillea biebersteinii from asteracea family may be effective in prevention t...

In this study, the anti-cholinesterase activities of different extracts Achillea lycaonica, A. vermicularis and nobilis L. subsp. neilreichii (Kerner) Formanek species were examined then trace elements (Al, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Se, Cd, Pb) plants analysed by ICP-MS. The pharmacokinetic properties phenolic compounds these previously analyzed us ADME-Tox (absorption, distribution, m...

Achillea tenuifolia Lam. (Asteraceae) afforded a dichloromethane fraction from which three known compounds β-sitosterol (compound1), 5-hydroxy, 4',6,7– trimethoxy flavone (salvigenin compound 2), and methyl-gallate (compound 3) were isolated for the first time. The structure of isolated compounds was elucidated by different spectroscopic methods. Applying the molar-ratio method, the complexat...

Higher plants are a potential source of new drugs to improve the treatment of Chagase disease, which is affecting 16-18 million people, with more than 100 million exposed to the risk of infection (Ambrozin et al., 2004; Coura & Castro, 2002). Current therapy is unsatisfactory, because the only two drugs available, benznidazole and nifortimox possess severe side effects and their activity is lim...

Haplotype phylogenies based on DNA sequence data are increasingly being used to test traditional species-level taxonomies based on morphology. However, few studies have critically compared species limits based on morphological and DNA data, and the methods used to delimit species using either type of data are only rarely explained. In this paper, we review three approaches for species delimitat...

Extracts of 13 Brazilian medicinal plants were screened for their antimicrobial activity against bacteria and yeasts. Of these, 10 plant extracts showed varied levels of antibacterial activity. Piper regnellii presented a good activity against Staphylococus aureus and Bacillus subtilis, a moderate activity on Pseudomonas aeruginosa, and a weak activity against Escherichia coli. Punica granatum ...