Insights & Discussion
Daily goji berry supplementation increases antioxidant levels and protects visual health in the elderly, though the exact mechanism remains unclear.
In a double-masked, randomized, placebo-controlled study, elderly participants were given either a milk-based goji berry supplement (13.7 g/d) or a placebo for a 90-day period. Eye health was assessed via direct examination to measure pigmentation and soft drusen count in the macula, and blood tests were done to determine plasma zeaxanthin level and total antioxidant capacity.
In the discussion of results, the placebo group showed signs of hypopigmentation and soft drusen accumulation in the macula, which did not occur in the group that received the goji berry supplement. The group supplementing with goji berries also showed a significant increase in plasma zeaxanthin levels and total antioxidant capacity, while no change was seen in the placebo group. There were no adverse effects of the supplement reported in either group.
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Greater intake of blueberries considerably decreases the risk of age-related macular degeneration, while a remarkable dietary intake of anthocyanins inversely correlates with cataract incidents.
2024 The Journal of Nutrition Intake of Blueberries, Anthocyanins, and Risk of Eye Disease in Women Sesso HD, Rautiainen S, Park SJ, Kim E, Lee IM, Glynn RJ, et al.
Cohort Study Age-Related Macular Degeneration Anthocyanins Blueberry
Middle-aged and older women, numbering 36,653 and 35,402 originally without cataract and AMD, provided data for the study via semiquantitative food frequency questionnaires. Insights were derived on the consumption of blueberries by these women, with frequency varied from none to over two servings weekly. Additionally, total anthocyanin consumption was analysed, with major subclasses adjusted for energy and then into quintiles. Self-reported risk factors for eye diseases were adjusted in the multivariable hazard ratios.
On analysis, it was found that a significant portion of participants consumed a minimum of one serving of blueberries weekly. Thus, compared to no blueberry intake, it was observed that those consuming the fruit exhibited a decrease in the total instances of AMD, while visually significant AMD remained unaffected. Furthermore, dietary anthocyanin showed a modest yet significant inverse association with cataract occurrences, but no notable correlation with AMD.
Zhangyanming Tablets show potential as a protective agent for retinal function in early-stage, genetically-caused blindness in mice, possibly due to their antioxidant and anti-/pro-apoptotic properties.
2023 Biomedicine & Pharmacotherapy Protective effect of ZYMT, a traditional Chinese patent medicine in a mouse model of retinitis pigmentosa Huang Z, Huang Q, Xu K, Liang L, Li Y, Zhou W, et al.
Experimental Study Dang Shen Ge Gen Goji Berry
Eighty mice with Retinitis Pigmentosa (RP) were divided into two groups, with one group receiving Zhangyanming Tablets (ZYMT) and a control group getting distilled water. After a period of 7 and 14 days, the researchers conducted tests through electroretinogram, fundus photography, and histological examination to assess the retinal function and structure of the subjects. They furthered the study using TUNEL, immunofluorescence and qPCR to evaluate cell apoptosis and the expressions of particular genes.
The ZYMT-treated mice displayed a notable enhancement in retinal reactions and overall preservation of retinal structure when compared to the control group. Particularly noticeable were increases in retinal thickness and cell count, alongside a significantly lowered rate of cell death. A comprehensive follow-up shows the altered expressions of several genes in the retina following the application of ZYMT. These results, combined, suggest a key role of ZYMT in mitigating the effects of RP especially in early stages.
Plums, which are rich in bioactive compounds, antioxidants, and vitamins, can help maintain blood glucose level, bone health, heart health and even treat certain cancers.
2023 International Journal of Food Properties A comprehensive review on the availability of bioactive compounds, phytochemicals, and antioxidant potential of plum ( Prunus Domestica ) Ayub H, Nadeem M, Mohsin M, Ambreen S, Khan F, Oranab S, et al.
Review Article Antioxidant Blood Sugar Bone Health
The research explored the health benefits and medicinal effects of plums, a common fruit belonging to the Prunus genus. The study focused not only on their consumption as a food source but also their uses in beverages. Special attention was given to the polyphenolic compounds, bioactive compounds, and antioxidants inherent in plums, such as phenolic acids, anthocyanins, carotenoids, and various organic acids, alongside an array of necessary minerals and vitamins.
Apart from detailing traditional nutritional components, the study analyzed the unique constituents of plums like caffeic acid, chlorogenic acid and other phenolic compounds which contribute to its antioxidant property. The broader health benefits provided by these compounds spanning bone health, cardiovascular health, blood glucose stabilization, and potential impacts on gastrointestinal diseases were studied, with a particular emphasis on their possible role in the prevention and treatment of heart disease and specific kinds of cancer: lung and oral. The role of plums' low fat and high dietary fibre content in heart disease prevention was of special focus.
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.
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