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Beer hop compounds could serve as the basis for nutraceuticals to combat Alzheimer’s disease

Nicholas by Nicholas
November 7, 2022
in Health
0
Beer hop compounds could serve as the basis for nutraceuticals to combat Alzheimer’s disease

Beer is one of the oldest and most popular beverages in the world, with some people loving and others hating the distinct, bitter taste of the hops used to flavor its many varieties. But an especially “hoppy” brew might have unique health benefits. Recent research published in ACS Chemical Neuroscience reports that chemicals extracted from hop flowers can, in lab dishes, inhibit the clumping of amyloid beta proteins, which is associated with Alzheimer’s disease (AD).

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AD is a debilitating neurodegenerative disease, often marked by memory loss and personality changes in older adults. Part of the difficulty in treating the disease is the time lag between the start of underlying biochemical processes and the onset of symptoms, with several years separating them. This means that irreversible damage to the nervous system occurs before one even realizes they may have the disease. Accordingly, preventative strategies and therapeutics that can intervene before symptoms appear are of increasing interest.

One of these strategies involves “nutraceuticals,” or foods that have some type of medicinal or nutritional function. The hop flowers used to flavor beers have been explored as one of these potential nutraceuticals, with previous studies suggesting that the plant could interfere with the accumulation of amyloid beta proteins associated with AD. So, Cristina Airoldi, Alessandro Palmioli and colleagues wanted to investigate which chemical compounds in hops had this effect.

To identify these compounds, the researchers created and characterized extracts of four common varieties of hops using a method similar to that used in the brewing process. In tests, they found that the extracts had antioxidant properties and could prevent amyloid beta proteins from clumping in human nerve cells. The most successful extract was from the Tettnang hop, found in many types of lagers and lighter ales. When that extract was separated into fractions, the one containing a high level of polyphenols showed the most potent antibiotic and aggregation-inhibiting activity. It also promoted processes that allow the body to clear out misfolded, neurotoxic proteins. Finally, the team tested the Tettnang extract in a C. elegans model and found that it protected the worms from AD-related paralysis, though the effect was not very pronounced. The researchers say that although this work may not justify drinking more bitter brews, it shows that hop compounds could serve as the basis for nutraceuticals that combat the development of AD.

The authors acknowledge funding from the Italian Ministry of University and Research (MUR).

Source:

American Chemical Society

Journal reference:

Palmioli, A., et al. (2022) Alzheimer’s Disease Prevention through Natural Compounds: Cell-Free, In Vitro, and In Vivo Dissection of Hop (Humulus lupulus L.) Multitarget Activity. ACS Chemical Neuroscience. doi.org/10.1021/acschemneuro.2c00444.

Source

Tags: Alzheimer's DiseaseBeerChemicalsHopsNeurodegenerative DiseaseNeuroscienceResearch

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