Journal
JOURNAL OF NATURAL MEDICINES
Volume -, Issue -, Pages -Publisher
SPRINGER JAPAN KK
DOI: 10.1007/s11418-023-01763-1
Keywords
Isovaleraldehyde; Cacao; BDNF; CREB; Dementia; SH-SY5Y
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The number of patients diagnosed with dementia is increasing, but there is currently no cure for this disease. However, a recent study found that isoaldehyde, an aroma component of cacao nib extract, can upregulate the expression of brain-derived neurotrophic factor (BDNF) and potentially help prevent dementia.
Recently, the number of patients diagnosed with dementia has increased. The World Health Organization (WHO) estimates that 50 million patients suffer from dementia. Although several therapeutic strategies have been proposed, currently, there is no curative approach for treating dementia. Neurodegeneration is an irreversible process. As this disease gradually progresses over 15-20 years, a low-cost and sustainable method for preventing these diseases is desired. Cacao nib is consumed in many countries, and a recent clinical study indicated that cocoa intake upregulates brain-derived neurotrophic factor (BDNF), which plays a significant role in memory formation and neuronal cell survival. In the present study, neural cells were treated with cacao nib extract or the 17 characteristic components of cacao nib. Treatment with Cacao nib extract upregulates BDNF mRNA expression. In addition, cacao nib extract elicits the phosphorylation of cAMP-response-element-binding protein (CREB), which regulates the transcription of BDNF. Among the 17 species screened, isovaleraldehyde (IVA), also known as an aroma component of cacao nibs extract, improved BDNF mRNA expression without SH-SY5Y cell toxicity. IVA also promoted CREB phosphorylation through a cAMP-dependent protein kinase (PKA)-dependent mechanism. In conclusion, IVA could be responsible for the BDNF upregulation effect of cacao nib, and IVA upregulated BDNF expression via the PKA-CREB axis.
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