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Pomegranate peel extract supplementation can decrease total cholesterol and triglyceride levels while boosting antioxidant status in obese women with knee osteoarthritis.
The research was a randomized, double-blind placebo-controlled trial involving 66 obese women aged 38 to 60 years old with knee osteoarthritis. These participants were split into two groups, the intervention group and control group, each containing 33 members. The intervention group received pomegranate peel extract capsules (500 mg) twice daily for 8 weeks including standard drug therapy while the control group was given a placebo during the same period. All participants' fasting blood samples, anthropometric measurements, dietary intake data, and physical activity levels were collected both before the start and at the end of the trial.
Results analysis showed that pomegranate peel extract supplementation brought down levels of serum total cholesterol, triglyceride and an oxidative stress marker while enhancing levels of some antioxidant enzymes and the overall antioxidant capacity when compared to the control group. However, there were no noticeable alterations between the two groups in terms of low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, and body mass index by the end of the experiment.
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Pomegranate peel extract, along with a calorie deficit diet, could improve risk factors of metabolic syndrome and reduce fatty liver in patients with non-alcoholic fatty liver disease.
2023 Nutrition Journal Pomegranate (Punica granatum L.) peel extract ameliorates metabolic syndrome risk factors in patients with non-alcoholic fatty liver disease: a randomized double-blind clinical trial Barghchi H, Milkarizi N, Belyani S, Norouzian Ostad A, Askari VR, Rajabzadeh F, et al.
Randomised Controlled Trial NAFLD Pomegranate Peel
In the first phase, the research involved the hydro-alcoholic extraction of the peel of 750 kilograms of pomegranate using the soaking method. The second phase saw patients with non-alcoholic fatty liver disease divided into two groups - a placebo group and a pomegranate peel capsule group. Both groups followed a diet with a 500 kcal deficit for eight weeks. Aspects like intolerance to the treatment, participants' dietary intake, their lipid and glycemic profiles, blood pressure, body composition, insulin resistance indexes and changes in fatty liver disease evaluated through elastography were monitored.
Further, the study reported substantial decreases in multiple indicators such as body weight, waist circumference, body mass index, body fat index, trunk fat, blood pressure, total cholesterol, triglyceride levels, LDL cholesterol, fat free mass, and fasting blood sugar in the group that took pomegranate peel capsules compared to the placebo group. Meanwhile, HDL cholesterol and liver steatosis and stiffness saw improvement. No significant differences, however, were found in the insulin and homeostatic model assessment for insulin resistance between the two groups.
Moxibustion, a form of traditional Chinese medicine, appears to be an effective and safe treatment for knee osteoarthritis.
2022 Frontiers in Physiology An Overview of Systematic Reviews of Moxibustion for Knee Osteoarthritis Yin S, Zhu F, Li Z, Che D, Li L, Feng J, et al.
Systematic Review Knee Osteoarthritis Moxibustion
The researchers used a series of databases including Embase, PubMed, Web of Science, Cochrane Library, and others to carry out a comprehensive evaluation of previous systematic reviews on the treatment of knee osteoarthritis with moxibustion. They employed the Measurement Tool to Assess Systematic Reviews 2 to assess the methodological quality, Preferred Reporting Item for Systematic Reviews and Meta-analyses for reporting quality, and ROBIS Tool to evaluate the risk of bias in the systematic reviews. They also assessed the strength of evidence with the Grading of Recommendations Assessment, Development and Evaluation tool and carried out a meta-analysis of the total effectiveness rate.
From this process, 10 systematic reviews were selected that had met their criteria. These reviews included the results of 57 randomized controlled trials involving a total of 5,149 participants. However, these reviews were found to have several critical deficiencies, scoring low on the quality scale used. Despite this, moxibustion, and its combination treatment, were shown to improve the total effectiveness rate in knee osteoarthritis. Eight of the reviews had reported adverse events but none were classified as serious in either the moxibustion group or control group.
The underutilized pomegranate peel, full of abundant bioactive substances, could be repurposed for its potential health benefits like anti-inflammatory, anti-cancer, cardiovascular protection, and antibacterial activities.
2022 Frontiers in Nutrition Pomegranate Peel as a Source of Bioactive Compounds: A Mini Review on Their Physiological Functions Mo Y, Ma J, Gao W, Zhang L, Li J, Li J, et al.
Review Article Anti-Inflammatory Antibacterial Anticancer
This paper conducts a miniature review of the characterization and physiological functions of the key bioactive compounds present in pomegranate peel. The exploration underscores the main phenolic compounds in the peel, illustrating substances such as tannins, flavonoids, phenolic acids, dietary fibers, alkaloids, minerals, and vitamins. A deep understanding of these components and their potential benefits is vital to the study and future applications.
The research finds that these core components essentially function as antioxidants, either enhancing oxidative biomarkers or proactively neutralizing reactive oxygen species. By establishing these key functions, it essentially links these activities to a broader context of benefits, including but not limited to anti-inflammatory, anti-cancer, cardiovascular protection, and antibacterial attributes, thereby indicating a potential for substantial health benefits. With comprehensive understanding and appropriate application of these substances, the pomegranate peels, often classified as waste, could find a new life as robust health-enhancing elements.
Pomegranate has been found to alleviate morphological and functional changes in the thyroid glands induced by Lithium Carbonate by controlling apoptosis and oxidative stress.
2022 The Anatomical Record Pomegranate (Punica granatum) peel alleviates lithium‐induced alterations in the thyroid gland of rats by modulating apoptosis and oxidative stress El‐Din WAN, Fadel R, Rashid A, Al‐Mahameed AE, Othman MA
Experimental Study Oxidative Stress Pomegranate Peel Thyroid Disease
The study divided rats into four groups: control, lithium, lithium-pomegranate, and pomegranate. For eight weeks, the rats were treated according to their respective group assignments. Following this period, they were sacrificed, and an array of assessments were conducted on the extracted thyroid glands. These evaluations included estimated levels of thyroid hormones and markers indicating oxidative stress, along with histological, immunohistochemical, and ultrastructural evaluations of the thyroid tissues.
Observations in the group treated with lithium carbonate showed significant changes in thyroid hormone levels along with an increased expression of the oxidant marker and decreased expression of the antioxidant marker. Additionally, histological evaluation highlighted disorganization and follicle involution, a decline in both staining intensity and immunoreactivity of an antioxidant enzyme, an increase in collagen fiber content and Bax immunoreactivity, and marked distortions in follicular ultrastructure. However, in the group treated with both lithium carbonate and pomegranate, most of these changes were substantially mitigated, thereby indicating the potential protective role of pomegranate against lithium-induced alterations.
Turmeric curcuminoids are associated with better pain relief than NSAIDs in knee osteoarthritis.
2021 Complementary Therapies in Medicine The efficacy of high- and low-dose curcumin in knee osteoarthritis: A systematic review and meta-analysis An-Fang Hsiao, Yi-Chieh Lien, I-Shiang Tzeng, Chien-Ting Liu, Sheng-Hsun Chou, Yi-Shiung Horng
Systematic Review Arthritis Knee Osteoarthritis Turmeric
The meta-analysis results showed that curcuminoids were significantly more effective than comparators regarding visual analogue scale (VAS) and Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain scores.
However, no significant difference in pain relief or AEs between the high-dose (daily dose ≥1000 mg or total dose ≥42 gm) and low-dose (daily dose <1000 mg or total dose <42 gm) curcuminoid treatments was observed.
When comparing curcumininoids versus NSAIDs, a significant difference in VAS pain was found. For AE analysis, three of our included studies used NSAIDs as comparators, with all reporting higher AE rates in the NSAID group, though significance was reached in only one study.
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