title: Double edged effect of gum-resin of ferula assa-foetida on lifespan of neurons.
abstract: OBJECTIVE
  Based on knowledge from traditional herbal medicine, Ferula assa-foetida (asafoetida) has several therapeutic applications but there is less knowledge about its effect on neurons.
  
  
  METHODS
  In order to evaluate neuronal differentiation, neuronal like cells were stained against neuronal specific markers β-Tubulin III and MAP2. After establishment of neuronal differentiation in cultured cells, aqueous extract of gum-resin of asafoetida were applied on culture medium of neurons with different concentrations then survival rate of neurons were evaluated by cell counting and methyl tetrazolium bromide (MTT) tests.
  
  
  RESULTS
  The results showed that asafoetida gum resin particularly with 0.01 and 1 µg/ml concentrations could improve survival rate of neurons, while10 µgr/ml treated group was toxic.
  
  
  CONCLUSIONS
  RESULTS of this study indicated that gum resin of asafoetida in low doses has neuroprotective effect on neurons and improves survival rate of them, however in higher concentrations it is toxic for neurons.
authors.affiliation: Neurobiomedical Research Center, Shahid Sadoughi University of Medical Sciences, Yazd, Iran ; Department of Physiology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
authors.forename: Farshad
authors.initials: F
authors.lastname: Homayouni Moghadam
authors.forename: Behzad
authors.initials: B
authors.lastname: Vakili Zarch
authors.forename: Mohammad
authors.initials: M
authors.lastname: Shafiei
keywords: Asafoetida; Mesenchymal stem cells; Neuroprotective; Neurotoxic