American Journal of Agricultural and Biological Sciences

SILKWORM PUPAE PROTECT AGAINST ALZHEIMER’S DISEASE

Jintanaporn Wattanathorn, Supaporn Muchimapura, Artit Boosel, Sombat Kongpa, Wiroje Kaewrueng, Terdthai Tong-Un, Panakaporn Wannanon and Wipawee Thukhammee

DOI : 10.3844/ajabssp.2012.330.336

American Journal of Agricultural and Biological Sciences

Volume 7, Issue 3

Pages 330-336

Abstract

Silkworm (Bombyx mori) pupae have long been used as food and medicine in Asian countries. It is reputed for the treatment of numerous neurological disorders related to oxidative stress including stroke. Therefore, we hypothesized that silkworm pupae could attenuate memory impairment and neurodegeneration in Alzheimer’s disease. In the present study, we determined the effect of silkworm pupae on the neurodegeneration and memory impairment in animal model of Alzheimer’s disease. Adult male Wistar rats, weighing 180-220 g, were orally given the silkworm pupae at doses of 60, 90 and 135 mg kg-1 BW 14 days before and 7 days after the bilateral administration of AF64A, a cholinotoxin, via intracerebroventricular route. The animals were determined the memory using Morris water maze test and determined the density of neurons in hippocampus. All doses of silkworm pupae used in this study significantly mitigated the memory impairment and the decreased neurons density in hippocampus. To explore the possible underlying mechanism of the cognitive enhancing effect and neuroprotective effect, the activity of acetylcholinesterase enzyme and the Malondialdehyde (MDA), the oxidative marker were determined respectively. Our results clearly demonstrated that the cognitive enhancing effect of silkworm pupae occurred at least via the increased cholinergic function while its neuroprotective effect occurred via the decrease oxidative stress. In conclusion, silkworm pupae appear to be the potential functional food to protect against Alzheimer’s disease.

Cite this Article

Wattanathorn, J., S. Muchimapura, A. Boosel, S. Kongpa and W. Kaewrueng et al., 2012. Silkworm pupae protect against Alzheimer’s disease. Am. J. Agric. Biol. Sci., 7: 330-336.