Insights & Discussion
Antioxidant therapy significantly reduces disease-related symptoms for patients with knee osteoarthritis.
Methodology: The approach for this systematic review and meta-analysis was based on thorough literature analysis with no time or language restrictions from prominent databases including PubMed, International Scientific Indexing, and Scopus. The search was focused on the connections between "osteoarthritis" and "antioxidants". This study considered pain as the primary outcome while also analyzing the symptoms, functions of knee osteoarthritis, and quality of life. All these variables were measured using the corresponding instrument from existing studies. Only randomized controlled trials with a placebo control or other medical therapeutic interventions were included. Publication bias was evaluated using Begg's funnel plot and Egger's regression test, and results were validated using the trim-and-fill test.
Results: From the initial 7,698 papers, information was obtained from 31 selected documents. Results showed that antioxidant therapy significantly affected the symptoms of patients with knee osteoarthritis, as validated using the Visual Analog Scale. However, there was no notable difference observed in the combined score, difficulty score, pain score, and stiffness score as reported by the Western Ontario and McMaster Universities Osteoarthritis Index.
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Gold kiwifruit extracts contained different bioactive materials which showed selective cytotoxic activity against human oral tumor cells and displayed anti-HIV, antioxidant, and antibacterial activities.
2023 Journal of Ethnopharmacology Cancer prevention and therapy with kiwifruit in Chinese folklore medicine: a study of kiwifruit extracts Motohashi N, Shirataki Y, Kawase M, Tani S, Sakagami H, Satoh K, et al.
Network Pharmacology Antibacterial Antioxidant Kiwifruit
The methodology involved stepwise extraction of gold kiwifruit with hexane, acetone, methanol, and 70% methanol; the extracts were then fractionated using silica gel and ODS column chromatographies to examine their biological activities. Different fractions like H1, H2 (from the hexane extract), A1, A2 (from the acetone extract), and M2 (from the methanol extract) were tested, as well as more hydrophilic fractions from the 70% methanol extract.
In the discussion of the results, fractions H1, H2, A1, A2 and M2 displayed notable cytotoxic activity against human oral tumor cell lines, with these showing more sensitivity compared to human gingival fibroblasts. The hydrophilic fractions from the 70% methanol extract demonstrated higher anti-HIV activity, radical generation, and oxygen scavenging activity. However, the antibacterial activity of these fractions was generally lower than that of the more lipophilic (hexane, acetone, methanol) extracts, indicating no distinct antimicrobial action. Interestingly, all fractions were inactive against Helicobacter pylori.
The compound (Z)-5’-Hydroxyjasmone 5’-O-β-D-Glucopyranoside from chrysanthemum flowers demonstrated superior antioxidant and anti-osteoporosis effects.
2023 Journal of Science and Technology - HaUI Investigate the antioxidant and anti-osteoporosis activities of compounds isolated from chrysanthemum indicum flowers Le The Hoai, Nguyen Thi Huong, Bui Thi Thu Trang
Experimental Study Antioxidant Chrysanthemum Osteoporosis
The research involved isolating five compounds from Chrysanthemum indicum L flowers: Syringin, Dihydrosyringin, Benzyl-O-β-D- glucopyranoside, -Phenylethoxy-O--D-glucopyranoside, and (Z)-5’-Hydroxyjasmone 5’-O-β-D-Glucopyranoside. The identification and structure determination of these compounds were performed via the interpretation of their 1D - NMR spectra and comparison to established literature. The collected compounds were then assessed for their antioxidative and anti-osteoporosis activities.
During the analysis of results, it was observed that the compound (Z)-5’-Hydroxyjasmone 5’-O-β-D-Glucopyranoside exhibited significantly higher antioxidant activity and anti-osteoporosis effects compared to the others. It showed a strong capacity for peroxyl radical scavenging, surpassing the protection offered by the standard Trolox. Dihydrosyringin also demonstrated a good reducing capacity, as indicated by its CUPRAC values. Furthermore, (Z)-5’-Hydroxyjasmone 5’-O-β-D-Glucopyranoside displayed strong inhibitory effects on osteoclast differentiation, indicating its potential as an anti-osteoporosis agent.
Chrysanthemum morifolium contains natural bioactive compounds, including 29 types of phenolics, which display significant antioxidant activity.
2023 Egyptian Journal of Chemistry Chemical Investigation of Phenolic Profiles and Antioxidant Activity of Chrysanthemum morifolium Youssef H, Ali S, Sanad M, Dawood D
Experimental Study Antioxidant Chrysanthemum
The study determined the antioxidant properties of Chrysanthemum morifolium by using methanol and ethyl acetate as solvents to extract and then analyse the plant's phenolic profile. The antioxidant activity was assessed with three separate in vitro tests: a reducing power assay, a Phosphomolybdenum antioxidative power assay, and the testing of inhibition of free radical 1,1-di phenyl-2-picryl hydrazyl. The content of total phenolics and total flavonoids was measured using the Folin Ciocalteu reagent, yielding a range of values.
In relation to the results, it was established that the examined plant was a significant source of bioactive compounds with notable antioxidant properties. A total of 29 phenolics, divided into 15 phenolic acids and 14 flavonoids were identified and quantified using high-performance liquid chromatography. Ellagic acid was the most present phenolic in the methanol extract and ethyl acetate fraction of green aerial parts. Meanwhile, Hesperidin was the most common flavonoid in the flower methanol extract. The ethyl acetate fraction from the flowers showed the highest efficiency in all tested antioxidant methods, indicating that different parts of the plant can vary in their antioxidant potential.
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.
Noni fruit juice enhances immune system function, primarily by boosting natural killer cell activity and increasing interferon-gamma production, which promotes phagocytosis.
2023 Journal of Biosciences and Medicines The Influence of Noni Fruit Juice on Immune System Function West BJ, Uwaya A, Isami F, Tomida N, Swartz F, Deng S, et al.
Review Article Antioxidant Immunity Noni
The research was conducted using several human, animal, and in vitro studies to gain insight into the immunomodulatory effects of noni fruit juice. They observed the impact on natural killer cell activity and monitored interferon-gamma production to assess improvements in immune function. Further investigation was carried out to identify how noni influences this process, with a focus on kinase 1/2, protein kinase B, and nuclear factor-kappa-beta signaling. In addition, they carried out trials to evaluate the antioxidant properties of noni juice.
The studies showed that noni juice significantly enhances the immune system's function. This was evidenced by an increase in natural killer cell activity, which likely contributes to improved health outcomes and survival times as seen in previous case reports. Furthermore, they saw an increase in interferon-gamma production, known to boost natural killer cell activity and phagocytosis. They also discovered that noni promotes regulatory cytokine expression, which supports immune response. Additionally, noni juice demonstrated considerable antioxidant properties, implying a positive effect on oxidative status, a key player in immune function.
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