Apple Compounds Improve Memory and Gut Health Through the Gut-Brain Connection

Jenn Hoskins
14th July, 2024

Apple Compounds Improve Memory and Gut Health Through the Gut-Brain Connection

Treatment with apple polysaccharides reversed age-related intestinal barrier damage in mice by improving colon structure (a, b), restoring the mucus layer (c, d), and increasing the expression of crucial tight junction proteins ZO-1 and occludin (e–j).

Image adapted from: Zhang et al. / CC BY (Source)

Key Findings

  • A study by Nanchang University found that apple polysaccharides (AP) improve learning and memory in aging mice
  • AP boosts neural health by increasing proteins essential for neuron communication
  • AP reduces inflammation and oxidative stress, which are key factors in aging
  • AP restores gut health by repairing the intestinal barrier and promoting beneficial bacteria
Aging is an inevitable biological process that leads to a gradual decline in physiological functions, making individuals more susceptible to diseases such as neurological disorders, cardiovascular diseases, diabetes, and cancer[2]. Recent research has focused on finding interventions to delay the onset and progression of these aging-associated diseases, thereby extending healthspan and lifespan[2]. A new study conducted by Nanchang University has explored the potential of apple polysaccharides (AP) in alleviating cognitive impairment and intestinal aging in naturally aging mice[1]. The study found that AP could significantly improve spatial learning and memory in aging mice, as evidenced by the Morris water maze experiment. This improvement in cognitive function was associated with an upregulation of nerve growth factor (BDNF), postsynaptic marker (PSD95), and presynaptic marker (SYP) proteins. These proteins play crucial roles in maintaining neural health and facilitating communication between neurons, which are essential for cognitive functions. Additionally, the study demonstrated that AP enhances the total antioxidant capacity of the mice, reduces pro-inflammatory cytokine levels, and inhibits the activation of the NF-κB signaling pathway. The NF-κB pathway is known to be involved in inflammatory responses, and its inhibition can lead to reduced inflammation and oxidative stress, which are critical factors in aging and age-related diseases[2][3]. By exerting these anti-inflammatory and antioxidant functions, AP helps mitigate some of the detrimental effects of aging on the body. The administration of AP also restored the intestinal mucosal barrier function in the aging mice, reducing the expression of aging and apoptosis-related proteins. The intestinal epithelium, which acts as the first line of defense against pathogens and regulates the immune system, relies heavily on intestinal stem cells (ISCs) for its maintenance[4]. The study's findings suggest that AP can enhance the regenerative capacity of the gut, thus maintaining mucosal homeostasis and overall intestinal health. Moreover, the study observed significant changes in the gut microbiota of the mice treated with AP. Specifically, there was a decrease in the abundance of potentially harmful bacteria such as Helicobacter and Bilophila, and an increase in beneficial bacteria like Lactobacillus and Bacteroides. The gut microbiota plays a crucial role in overall health, influencing various bodily functions, including the immune response and metabolic processes[4]. By altering the microbial composition in favor of beneficial bacteria, AP contributes to a healthier gut environment, which is particularly important in aging populations. These findings align with previous research that highlights the importance of natural products in aging research[2]. Natural products, such as those derived from herbs and fruits, have a rich history in treating human diseases and have been shown to influence key molecular pathways involved in aging[2]. The study on AP adds to this body of knowledge by providing evidence of its multifaceted benefits, including cognitive improvement, anti-inflammatory and antioxidant effects, and enhancement of gut health. In conclusion, the study conducted by Nanchang University demonstrates that apple polysaccharides can significantly alleviate cognitive impairment, reduce oxidative stress and inflammation, repair the intestinal mucosal barrier, and positively alter gut microbiota in aging mice. These findings suggest that AP could be a promising natural intervention for improving the health of the elderly, addressing some of the key challenges associated with aging.

FruitsHealthMental Health

References

Main Study

1) Apple polysaccharide improves age-matched cognitive impairment and intestinal aging through microbiota-gut-brain axis.

Published 13th July, 2024

https://doi.org/10.1038/s41598-024-67132-4

Related Studies

2) A natural product solution to aging and aging-associated diseases.

https://doi.org/10.1016/j.pharmthera.2020.107673

3) The Role of Rapamycin in Healthspan Extension via the Delay of Organ Aging.

https://doi.org/10.1016/j.arr.2021.101376

4) Intestinal stem cells: guardians of homeostasis in health and aging amid environmental challenges.

https://doi.org/10.1038/s12276-024-01179-1


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