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Daily consumption of tart cherry juice may enhance cognitive abilities in older adults, likely due to reduction of hypertension, inflammation, and oxidative stress.
In this randomized controlled trial, 37 adults aged between 65 and 80 years with normal cognitive function were assigned to consume two cups of Montmorency tart cherry juice daily for a duration of 12 weeks. Participants' subjective memory and objective cognitive performance were evaluated at the starting point and after the 12-week juice supplementation using a validated memory questionnaire and a standard assortment of tests designed for cognitive assessment. Factors such as daily caloric intake and physical activity levels were also monitored during the study.
After the 12-week intervention, participants who consumed tart cherry juice showed an improvement in their contentment with memory scores, demonstrated decreased scores of movement time, and performed better on a task of paired associates learning when compared to the control group. Notably, the results revealed that the tart cherry juice group demonstrated improvements on measures of visual sustained attention and spatial working memory relative to their own baseline values. These findings suggest that the potential benefits of tart cherry juice to cognitive abilities might be attributed to the juice's antioxidant and anti-inflammatory properties, and its capacity to reduce blood pressure.
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Consumption of blueberry powder daily improves vascular function, cognitive abilities, and reduces blood pressure in healthy older individuals.
2023 The American Journal of Clinical Nutrition Wild blueberry (poly)phenols can improve vascular function and cognitive performance in healthy older individuals: a double-blind randomized controlled trial Wood E, Hein S, Mesnage R, Fernandes F, Abhayaratne N, Xu Y, et al.
Randomised Controlled Trial Blueberry Cognitive Function High Blood Pressure
This double-blind, parallel randomized controlled trial engaged 61 healthy older individuals aged between 65 to 80 years old. Participants were given either 26g of freeze-dried wild blueberry (WBB) powder, comprising 302 mg anthocyanins, or a similar placebo with zero mg anthocyanins. Measurements were made for endothelial function, cognitive function, arterial stiffness, blood pressure, cerebral blood flow, gut microbiome, and blood parameters, both at the start of the trial and again following 12 weeks of daily consumption. In addition, plasma and urinary polyphenol metabolites were analyzed through the use of microelution solid-phase extraction combined with liquid chromatography-mass spectrometry.
In the WBB group, there was a notable increase in endothelial function and a decrease in 24-hour ambulatory systolic blood pressure, when compared to the placebo group. Enhanced immediate recall on the auditory verbal learning task was also observed, along with better accuracy on a task-switch task following administering of WBB. Notably, the total 24-hour urinary excretion of polyphenols also significantly increased in the WBB group comparative to the control group. In contrast, there were no discernible changes in cerebral blood flow or gut microbiota composition. These findings imply that WBB polyphenols could contribute to reducing future cardiovascular disease risk in older populations, and might enhance memory processes and executive functioning in older adults at risk of cognitive decline.
Bananas and plantains contain compounds with anti-inflammatory, anti-apoptotic, and antioxidative properties that hold promise for potentially reversing neurological disorders.
2022 Foods Suitability of Banana and Plantain Fruits in Modulating Neurodegenerative Diseases: Implicating the In Vitro and In Vivo Evidence from Neuroactive Narratives of Constituent Biomolecules Oyeyinka BO, Afolayan AJ
Anti-Apoptotic Anti-Inflammatory Antioxidant
The methodology of the study revolved around scrutinizing the bioactive properties found in bananas and plantains. Researchers pinpointed various neuroprotective mechanisms within commonly consumed fruits, specifically bananas and plantains. The study examined protein expression regulation and targeted specific gene pathways, including nuclear and tumor necrosis factors, extracellular signal-regulated and mitogen-activated protein kinases, activator protein-1, and the glial fibrillary acidic protein. In their investigations, they also considered the underutilized peel components of these fruits.
The results suggest that the multitude of bioactive compounds found in both the pulp and peels of bananas and plantains perform a variety of beneficial neuroprotective activities. These range from acting as antioxidants, preventing cell death (anti-apoptotic), and reducing inflammation (anti-inflammatory), to directly influencing the functionality of the nervous system (neuromodulatory). This discovery implicates plant-based foods, specifically bananas and plantains, as potentially significant substances in combating, halting, or mitigating the pathological mechanisms underlying neurodegenerative disorders.
Walnut seed skin extract demonstrates potential hepato-renal protective effects, inhibiting inflammatory responses, oxidative stress and apoptosis, in kidney-damaged Sprague-Dawley rats.
2022 Cytokine The hepato-renal protective potential of walnut seed skin extract against acute renal ischemia/reperfusion damage Askin S, Askin H, Dursun E, Palabiyik E, Uguz H, Cakmak , et al.
Animal Study Acute Kidney Injury Acute Renal Ischemia Anti-Inflammatory
In the methodology, Sprague-Dawley rats in acute kidney injury state were divided into three groups: a healthy control, a group induced with renal ischemia/reperfusion (IR), and another group induced with renal IR and treated with walnut seed skin (WSS) extract. Blood, liver and kidney tissues were collected for serum evaluations of aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, urea, and creatinine. Histopathological studies were performed on liver and kidney tissues, and gene markers related to anti-oxidant, anti-inflammatory, and apoptotic effects were measured.
The results showed an improvement in deteriorated serum parameters in rats with renal ischemia pre-treated with WSS extract. Histopathological analysis revealed a protective effect of WSS on kidney and liver tissues. Though gene expression studies yielded diverse results for liver and kidney tissues, the consensus was that WSS had a pronounced protective impact on the liver. It was inferred that WSS's healing potential in renal and hepatic tissues seems to work via inhibiting inflammatory response, oxidative stress, and apoptosis.
Jujube nutrients may offer potential therapeutic benefits including antioxidant, antibacterial, anti-inflammatory functions, and improving sleep quality and learning.
2022 Journal of Agricultural and Food Chemistry Wild Jujube (Ziziphus jujuba var. spinosa): A Review of Its Phytonutrients, Health Benefits, Metabolism, and Applications Hua Y, Xu X, Guo S, Xie H, Yan H, Ma X, et al.
Review Article Anti-Inflammatory Antibacterial Antioxidant
The methodology used for this study involves a comprehensive review of existing research about Wild jujube, giving particular focus on its phytonutrients, biological functions, metabolism of bioactive compounds, and applications. The study does not seem to detail a specific experimental procedure, but instead bases its conclusions on existing literature. Various parts of the wild jujube plant, such as the fruits, seeds and leaves, were examined for their potential role as food, medicine, or health care aids.
The results from the review suggest that the different parts of the wild jujube plant play many roles. The fruits have been noted for their antioxidant, antibacterial, and anti-inflammatory properties, and as ingredients preventing aging. The mature seeds have been found to have potential beneficial effects on central nervous system diseases, particularly in the treatment of insomnia and the enhancement of learning and memory.
Honey, owing to its bioactive compounds, demonstrates potential in treating COVID-19 symptoms by reducing oxidative damage and enhancing the immune system.
2022 Applied Sciences Honey as an Adjuvant in the Treatment of COVID-19 Infection: A Review Soares S, Bornet M, Grosso C, Ramalhosa MJ, Gouvinhas I, Garcia J, et al.
Review Article Anti-Inflammatory Antioxidant Immunity
The review outlines the SARS-CoV-2 virus's mechanisms of action, which is responsible for COVID-19, offering a comprehensive understanding. It also explores the various bioactive assets honey has at its disposal, primarily focusing on its beneficial properties.
The discussion elaborates on the potentials of honey's biological properties, especially its antioxidant and anti-inflammatory activities. These characteristics of honey, as suggested by the review, could contribute to the relief of oxidative damage and boost the immune system, thereby proving beneficial in combating viral infections, including COVID-19.
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