the short and long term effects of chromium toxicity on brain catecholamines and acetylcholinesterase levels were investigated. rats were injected daily with varying amounts of chromium. the short term (2 h) administration of chromium (8 mmol/kg) reduced catecholamines level of cerebellum, mid-brain and brain-cortex by 22.8, 19.4 and 21.2% respectively. acetylcholinesterase activity was also re...

the chemical composition of the essential oils of flower at the pre-flowering, full-flowering and post-flowering stage of a. annua was analyzed by gc and gc/ms and sixty-two components were identified. the main compounds in the pre-flowering oil were β-myrcene (37.71%), 1, 8-cineole (16.11%) and camphor (14.97%). the full-flowering oil contained predominantly caryophyllene (19.4%), germacrene d...

the toxicity of chlorpyrifos to three iranian populations of two-spotted spider mite, collected from isfahan (isr), yazd (yz) and guilan (gus2) provinces were surveyed using the residual contact vial bioassay. the bioassay results showed that resistance ratios of isr and yz populations were 176.90 and 9.78 fold compared to the gus2 population, respectively. determination of esterase and glutath...

The short and long term effects of chromium toxicity on brain catecholamines and acetylcholinesterase levels were investigated. Rats were injected daily with varying amounts of chromium. The short term (2 h) administration of chromium (8 mmol/kg) reduced catecholamines level of cerebellum, mid-brain and brain-cortex by 22.8, 19.4 and 21.2% respectively. Acetylcholinesterase activity was also re...

background and objective: changes of the enzyme acetylcholinesterase are involved in pathogenesis of different nervous disorders including alzheimer’s disease. this research work was conducted to evaluate the inhibitory effect of pistacia lentiscus ethanolic extract on acetylcholinesterase activity. materials and methods: activity of the enzyme acetylcholinesterase (ache) was measured by ellman...

The short and long term effects of chromium toxicity on brain catecholamines and acetylcholinesterase levels were investigated. Rats were injected daily with varying amounts of chromium. The short term (2 h) administration of chromium (8 mmol/kg) reduced catecholamines level of cerebellum, mid-brain and brain-cortex by 22.8, 19.4 and 21.2% respectively. Acetylcholinesterase activity was also re...

factors such as oxidative stress and reduced acetylcholine level have been implicated in alzheimer’s disease (ad) pathology and recently there has been a trend towards natural product research to find potential sources of antioxidants and acetylcholinesterase inhibitors in the plants kingdom. centaurea is a genus with about 500 species world wild, many of them have shown to possess biologic act...

Background and Objective: Changes of the enzyme acetylcholinesterase are involved in pathogenesis of different nervous disorders including Alzheimer’s disease. This research work was conducted to evaluate the inhibitory effect of Pistacia lentiscus ethanolic extract on acetylcholinesterase activity. Materials and Methods: Activity of the enzyme acetylcholinesterase (AChE) was measured by Ellman...

Acetylcholinesterase is the enzyme that terminates neurotransmission by hydrolyzing the acetylcholine released by the motoneurons at the neuromuscular junctions. Although acetylcholinesterase has been studied for almost a century, the underlying relationship between exercise-induced fatigue and acetylcholinesterase activity at the synaptic cleft is not clear. The purpose of this study was to as...

b-biotype bemisia tabaci is a severe insect pest worldwide in many ornamental, agricultural, and horticultural crops. control of this insect is obstructed by resistance to many acetylcholinesterase (ache)-inhibiting insecticides, such as organophosphates and carbamates. in the present work, we evaluated the acetylcholinesterase inhibitory activity of six monoterpenoids namely α-pinene, terpineo...