Abstract Title:

Neuritogenic and neuroprotective activities of fruit residues.

Abstract Source:

Nat Prod Commun. 2013 Nov ;8(11):1583-6. PMID: 24427947

Abstract Author(s):

Sarin Tadtong, Mayuree Kanlayavattanakul, Nattaya Lourith

Article Affiliation:

Sarin Tadtong


Neuritogenic and neuroprotective activities of litchi (Litchi chinensis Sonn., Sapindaceae) and salacca (Salacca edulis Reinw., Arecaceae) pericarp, and sapodilla (Achras sapota L., Sapotaceae) and tamarind Srichompu cultivar (Tamarindus indica L., Caesalpiniaceae) seed coat extracts were evaluated on cultured cholinergic P19-derived neurons. All the extracts, at a very low concentration (1 ng/mL of litchi and salacca pericarp extracts, 10 ng/mL of sapodilla and 100 ng/mL of tamarind seed coat extracts), enhanced the survival of cultured neurons (% viability more than 100%) by XTT reduction assay. The extracts were further evaluated for their neuritogenicity by observing cell morphology by phase-contrast microscopy and neuroprotective activity in serum deprivation and pre- and co-administration of hydrogen peroxide models. The phase-contrast micrographs displayed that all of the extracts possessed neurogenic activity by promoting the neurite outgrowth of the cultured neurons. Moreover, these extracts can protect neurons from oxidative stress-caused cell death in a serum deprivation model, and prevent and protect neuron cells from the toxicity of hydrogen peroxide. In this study we assured that the neuritogenic and neuroprotective activities of these extracts derived from the phenolic components and flavonoids contained in the extracts by acting as signaling molecules to enhance neuron survival and promote neurite outgrowth. These results suggest that all of the extracts are potentially sources of neuritogenic and neuroprotective components which might be used either as pharmaceutical products or dietary supplements for neurodegenerative disorder patients, for example, those suffering from Alzheimer's disease.

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