%0 Journal Article %A Azadmehr, A %A Hajiaghaee, R %A Rezazadeh, Sh %A Afshari, A %A Kiani amin, M %A Baradaran, B %A Ebrahimi, P %T Evaluation of Lavandula officinalis Extract on Lymphocyte Proliferation and Tumor Necrosis Factor-alpha Production %J Journal of Medicinal Plants %V 10 %N 38 %U http://jmp.ir/article-1-221-en.html %R %D 2011 %K <, i>, Lavandula officinalis<, /i>, Lymphocyte proliferation, Tumor necrosis factor alpha, %X Background: Studies have demonstrated that plant extracts have various biological effects including immunomodulatory effect. Objective: In the present study, the immunomodulatory effects of Lavandula officinalis on lymphocyte proliferation and tumor necrosis factor alpha cytokine production were investigated. Methods: [3H] - thymidine incorporation assay on stimulation of the peripheral lymphocytes with PHA and determination of tumor necrosis factor alpha production was assayed, using LISA method. Results: The herbal extract in a concentration of 50 g/ml and lesser, in the presence of mitogen increased peripheral blood lymphocytes proliferation. However, there was not significant effect in concentrations more than 50 μg/ml. Also, the extract in the concentration of higher than 50 g/ml suppressed the production of tumor necrosis factor alpha in the exposed cells. Conclusion: The extract showed immunomodulatory effect by increasing of lymphocyte proliferation in a concentration of 50 g/ml and lesser. Also, decreasing in tumor necrosis factor alpha in the concentration of more than 50 g/ml was observed. Further studies, should focus on identifying the immunomodulatory mediator of this herbal extract. %> http://jmp.ir/article-1-221-en.pdf %P 142-147 %& 142 %! %9 Research %L A-10-43-5 %+ Department of Pharmacognosy and Pharmacy, Institute of Medicinal Plants, ACECR %G eng %@ 2717-204X %[ 2011