Neuroprotection of guattegaumerine and regulation of intracellular calcium Acute isolation of nerve cells from Pardosa pseudoannulata Effects of astragaloside IV combined with active components of Panax notoginseng on apoptosis and endoplasmic reticulum stress in braintissues after cerebral ischemia-reperfusion in mice Neuroprotection of guattegaumerine and regulation of intracellular calcium