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Frontiers in Immunology 2023To evaluate safety and efficacy of dietary polyphenols in the treatment of rheumatoid arthritis (RA). (Meta-Analysis)
Meta-Analysis
OBJECTIVE
To evaluate safety and efficacy of dietary polyphenols in the treatment of rheumatoid arthritis (RA).
METHODS
CNKI, Pubmed, Cochrane library, Embase were searched to collect randomized controlled trials (RCTs) of dietary polyphenols in the treatment of RA. The databases were searched from the time of their establishment to November 8nd, 2022. After 2 reviewers independently screened the literature, extracted data, and assessed the risk of bias of the included studies, Meta-analysis was performed using RevMan5.4 software.
RESULTS
A total of 49 records (47 RCTs) were finally included, involving 3852 participants and 15 types of dietary polyphenols (Cinnamon extract, Cranberry extract, Crocus sativus L. extract, Curcumin, Garlic extract, Ginger extract, Hesperidin, Olive oil, Pomegranate extract, Puerarin, Quercetin, Resveratrol, Sesamin, Tea polyphenols, Total glucosides of paeony). Pomegranate extract, Resveratrol, Garlic extract, Puerarin, Hesperidin, Ginger extract, Cinnamon extract, Sesamin only involve in 1 RCT. Cranberry extract, Crocus sativus L. extract, Olive oil, Quercetin, Tea polyphenols involve in 2 RCTs. Total glucosides of paeony and Curcumin involve in more than 3 RCTs. These RCTs showed that these dietary polyphenols could improve disease activity score for 28 joints (DAS28), inflammation levels or oxidative stress levels in RA. The addition of dietary polyphenols did not increase adverse events.
CONCLUSION
Dietary polyphenols may improve DAS28, reduce C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR), and improve oxidative stress, etc. However, more RCTs are needed to verify or modify the efficacy and safety of dietary polyphenols.
SYSTEMATIC REVIEW REGISTRATION
https://www.crd.york.ac.uk/prospero/, identifier CRD42022315645.
Topics: Humans; Resveratrol; Curcumin; Hesperidin; Olive Oil; Quercetin; Randomized Controlled Trials as Topic; Arthritis, Rheumatoid; Glucosides; Tea
PubMed: 37033930
DOI: 10.3389/fimmu.2023.1024120 -
Nutrients Feb 2020Physical activity, particularly high-intensity eccentric muscle contractions, produces exercise-induced muscle damage (EIMD). The breakdown of muscle fibers and the...
Physical activity, particularly high-intensity eccentric muscle contractions, produces exercise-induced muscle damage (EIMD). The breakdown of muscle fibers and the consequent inflammatory responses derived from EIMD affect exercise performance. Curcumin, a natural polyphenol extracted from turmeric, has been shown to have mainly antioxidant and also anti-inflammatory properties. This effect of curcumin could improve EIMD and exercise performance. The main objective of this systematic review was to critically evaluate the effectiveness of curcumin supplementation on EIMD and inflammatory and oxidative markers in a physically active population. A structured search was carried out following Preferred Reporting Items for Systematic Review and Meta-Analyses (PRISMA) guidelines in the databases SCOPUS, Web of Science (WOS), and Medline (PubMed) from inception to October 2019. The search included original articles with randomized controlled crossover or parallel design in which the intake of curcumin administered before and/or after exercise was compared with an identical placebo situation. No filters were applied to the type of physical exercise performed, the sex or the age of the participants. Of the 301 articles identified in the search, 11 met the established criteria and were included in this systematic review. The methodological quality of the studies was assessed using the McMaster Critical Review Form. The use of curcumin reduces the subjective perception of the intensity of muscle pain; reduces muscle damage through the decrease of creatine kinase (CK); increases muscle performance; has an anti-inflammatory effect by modulating the pro-inflammatory cytokines, such as TNF-α, IL-6, and IL-8; and may have a slight antioxidant effect. In summary, the administration of curcumin at a dose between 150-1500 mg/day before and during exercise, and up until 72 h' post-exercise, improved performance by reducing EIMD and modulating the inflammation caused by physical activity. In addition, humans appear to be able to tolerate high doses of curcumin without significant side-effects.
Topics: Anti-Inflammatory Agents; Antioxidants; Creatine Kinase; Curcumin; Cytokines; Dietary Supplements; Exercise; Female; Humans; Inflammation Mediators; Male; Muscle Contraction; Muscle, Skeletal; Myalgia; Phytotherapy; Sports Nutritional Physiological Phenomena
PubMed: 32075287
DOI: 10.3390/nu12020501 -
Frontiers in Endocrinology 2021Diabetes mellitus (DM) is an ensemble of metabolic conditions that have reached pandemic proportions worldwide. Pathology's multifactorial nature makes patient...
Diabetes mellitus (DM) is an ensemble of metabolic conditions that have reached pandemic proportions worldwide. Pathology's multifactorial nature makes patient management, including lifelong drug therapy and lifestyle modification, extremely challenging. Currently, there is growing evidence about the effectiveness of using herbal supplements in preventing and controlling DM. Curcumin is a bioactive component found , which exhibits several physiological and pharmacological properties such as antioxidant, anti-inflammatory, anticancer, neuroprotective, and anti-diabetic activities. For these reasons, our objective is to systematically review the effects of or curcumin on DM. Databases such as PUBMED and EMBASE were searched, and the final selection included sixteen studies that fulfilled the inclusion criteria. The results showed that curcumin's anti-diabetic activity might be due to its capacity to suppress oxidative stress and inflammatory process. Also, it significantly reduces fasting blood glucose, glycated hemoglobin, and body mass index. Nanocurcumin is also associated with a significant reduction in triglycerides, VLDL-c, total cholesterol, LDL-c, HDL-c, serum C reactive protein, and plasma malonaldehyde. Therefore, it can be considered in the therapeutic approach of patients with DM.
Topics: Animals; Anti-Inflammatory Agents, Non-Steroidal; Curcumin; Diabetes Mellitus; Humans
PubMed: 34012421
DOI: 10.3389/fendo.2021.669448 -
Phytotherapy Research : PTR Jun 2022Endometriosis, a gynecological disease that affects reproductive age women is difficultly controlled in the long term by currently available treatments, prompting... (Review)
Review
Endometriosis, a gynecological disease that affects reproductive age women is difficultly controlled in the long term by currently available treatments, prompting patients to adopt self-controlled interventions including dietary changes. The aim of this review is to provide evidence of how curcumin, quercetin, and resveratrol can act as natural interventions to control endometriosis. The review followed PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. A comprehensive search was carried out in PubMed, Scopus, and Web of Science to gather together all the articles that study the specific actions of curcumin, resveratrol, or quercetin in endometriosis pathophysiology. All types of study designs including experimental data were considered. Thirty articles, including a clinical trial, were included. For the assessment of the quality of the selected studies that globally have "good quality", the GRADE (Grading of Recommendations Assessment, Development and Evaluation) and the SYRCLE ROB tool criteria were used. By acting on mechanisms of inflammation, oxidative stress, cell proliferation, invasion and adhesion, apoptosis, angiogenesis and glucose and lipid metabolism, curcumin, quercetin, and resveratrol showed to have beneficial effects, evidencing their potential application in the endometriosis treatment. However, future clinical studies are necessary to determine the real efficacy of these compounds in human endometriosis.
Topics: Antioxidants; Curcumin; Endometriosis; Female; Humans; Quercetin; Resveratrol
PubMed: 35583746
DOI: 10.1002/ptr.7464 -
Alternative Therapies in Health and... Sep 2023Turmeric is a well-known herb that has been used in many traditional medicinal systems since ancient times. Turmeric roots contain hydrophobic polyphenols called... (Meta-Analysis)
Meta-Analysis
CONTEXT
Turmeric is a well-known herb that has been used in many traditional medicinal systems since ancient times. Turmeric roots contain hydrophobic polyphenols called curcuminoids, which have proven anti-inflammatory and antioxidant effects and are shown to be beneficial for the management of musculoskeletal health. Various products containing curcumin or turmeric extract are commercially available.
OBJECTIVE
This systematic review and meta-analysis of randomized clinical trials (RCTs) is intended to evaluate the effective dose, safety, and efficacy of commercial turmeric extract and curcumin supplements in musculoskeletal health.
DESIGN
The research team performed a systematic literature search of PubMed, Google Scholar, and Cochrane Library databases and conducted a meta-analysis according to PRISMA guidelines.
SETTING
Authors from India and USA contributed to this systematic review and meta-analysis.
RESULTS
The research team analyzed 21 prospective, randomized clinical studies, of which seven studies were focused on skeletal muscle health and fourteen on joint health. Statistical heterogeneity was established based on the results of heterogeneity analysis of a Chi-square (χ2) value for Cochran's Q statistic of 29.3765 for musculoskeletal and 3666.80 for joint health studies (P < .0001 for both analyses). Therefore, the random effects model was used. The χ2 value of the random effects model was 216.5545 for skeletal muscle health studies and 1400.65 for joint health studies, which was statistically significant with P < .0001 for both analyses.
CONCLUSIONS
Turmeric extract and curcumin supplements can be effective adjuvants for the management of musculoskeletal health, with a low incidence of AEs. The water-dispersible turmeric extract, WDTE60N, at a dose of 250 mg per day, was found to be more effective than other curcumin products. However, the studies included in the analysis were conducted using diverse doses and treatment durations. Further evaluation using comparisons in future clinical trials can establish the appropriate effective dose of curcumin supplements for the overall maintenance of musculoskeletal health.
Topics: Humans; Curcumin; Curcuma; Plant Extracts; Anti-Inflammatory Agents
PubMed: 37574203
DOI: No ID Found -
Environmental Health : a Global Access... Apr 2022Concern that synthetic food dyes may impact behavior in children prompted a review by the California Office of Environmental Health Hazard Assessment (OEHHA). OEHHA... (Review)
Review
Concern that synthetic food dyes may impact behavior in children prompted a review by the California Office of Environmental Health Hazard Assessment (OEHHA). OEHHA conducted a systematic review of the epidemiologic research on synthetic food dyes and neurobehavioral outcomes in children with or without identified behavioral disorders (particularly attention and activity). We also conducted a search of the animal toxicology literature to identify studies of neurobehavioral effects in laboratory animals exposed to synthetic food dyes. Finally, we conducted a hazard characterization of the potential neurobehavioral impacts of food dye consumption. We identified 27 clinical trials of children exposed to synthetic food dyes in this review, of which 25 were challenge studies. All studies used a cross-over design and most were double blinded and the cross-over design was randomized. Sixteen (64%) out of 25 challenge studies identified some evidence of a positive association, and in 13 (52%) the association was statistically significant. These studies support a relationship between food dye exposure and adverse behavioral outcomes in children. Animal toxicology literature provides additional support for effects on behavior. Together, the human clinical trials and animal toxicology literature support an association between synthetic food dyes and behavioral impacts in children. The current Food and Drug Administration (FDA) acceptable daily intakes are based on older studies that were not designed to assess the types of behavioral effects observed in children. For four dyes where adequate dose-response data from animal and human studies were available, comparisons of the effective doses in studies that measured behavioral or brain effects following exposure to synthetic food dyes indicate that the basis of the ADIs may not be adequate to protect neurobehavior in susceptible children. There is a need to re-evaluate exposure in children and for additional research to provide a more complete database for establishing ADIs protective of neurobehavioral effects.
Topics: Animals; Attention; Attention Deficit Disorder with Hyperactivity; Brain; Coloring Agents; Food Coloring Agents; Humans
PubMed: 35484553
DOI: 10.1186/s12940-022-00849-9 -
Archives of Dermatological Research Oct 2023Frontal fibrosing alopecia (FFA) is a cicatricial alopecia affecting the frontotemporal hairline. Given that this scarring, immune-mediated follicular destruction most... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Frontal fibrosing alopecia (FFA) is a cicatricial alopecia affecting the frontotemporal hairline. Given that this scarring, immune-mediated follicular destruction most commonly affects postmenopausal Caucasian women, researchers have postulated that there are hormonal and genetic components; however, the etiology of FFA is still unknown. Recently, dermatologists have reported cases of FFA as being potentially caused by cosmetic products, such as sunscreen and shampoo. Therefore, this systematic review and meta-analysis intend to be the first to analyze the relationship between FFA and cosmetic/personal care products and treatments, including sunscreen, moisturizer, foundation, shampoo, conditioner, hair mousse, hair gel, hair dye, hair straightening/rebonding, chemical/laser facial resurfacing, aftershave, and facial cleanser.
METHODS
The Cochrane, PubMed, EMBASE, and Medline (Ovid) databases were searched for the relevant studies from the date of inception to August 2022. Case-control, cross-sectional, and cohort studies examining the effects of cosmetic/personal care product use on FFA, available in English full-text, were included. Analyses were performed using Review Manager, version 5.4. Results were reported as an odds ratio (OR) with a 95% confidence interval (CI); p values < 0.05 were considered significant.
RESULTS
Nine studies were included in our quantitative analyses, totaling 1,248 FFA patients and 1,459 controls. There were significant positive associations found for FFA and sunscreen (OR 3.02, 95% CI 1.67-5.47; p = 0.0003) and facial moisturizer (OR 2.20, 95% CI 1.51-3.20; p < 0.0001) use. Gender sub-analyses demonstrated a positive association for FFA and facial moisturizer in men (OR 5.07, 95% CI 1.40-18.32; p = 0.01), but not in women (OR 1.58, 95% CI 0.83-2.98; p = 0.16). Both gender sub-analyses were significantly positive for the association with facial sunscreen (Male OR 4.61, 95% CI 1.54-13.78, p = 0.006; Female OR 2.74, 95% CI 1.32-5.70, p = 0.007). There was no association found for a facial cleanser (OR 1.14, 95% CI 0.33-1.52; p = 0.51), foundation (OR 1.13, 95% CI 0.83-1.55; p = 0.21), shampoo (OR 0.49, 95% CI 0.22-1.10; p = 0.08), hair conditioner (OR 0.81, 95% CI 0.52-1.26; p = 0.35), hair mousse (OR 1.37, 95% CI 0.75-2.51; p = 0.31), and hair gel (OR 0.90, 95% CI 0.48-1.69; p = 0.74), hair dye (OR 1.07, 95% CI 0.69-1.64; p = 0.77), hair straightening/rebonding (OR 0.88, 95% CI 0.08-9.32; p = 0.92), hair perming (OR 1.41, 95% CI 0.89-2.23; p = 0.14), facial toner (OR 0.51, 95% CI 0.12-2.21; p = 0.37), or aftershave (OR 1.64, 95% CI 0.28-9.49; p = 0.58).
CONCLUSIONS
This meta-analysis strongly suggests that leave-on facial products, facial sunscreen and moisturizer, are associated with FFA. While the association with facial moisturizer did not persist when stratifying for female populations, gender sub-analyses remained significant for a facial sunscreen. There was no significant relationship found with hair products or treatments. These findings suggest a potential environmental etiology in the development of FFA, particularly UV-protecting chemicals.
Topics: Humans; Male; Female; Sunscreening Agents; Cross-Sectional Studies; Forehead; Alopecia; Cosmetics; Dermatologic Agents; Cicatrix; Hair Dyes; Lichen Planus
PubMed: 37014396
DOI: 10.1007/s00403-023-02604-7 -
BMJ Clinical Evidence Jun 2014Warts are caused by the human papillomavirus (HPV), of which there are over 100 types. HPV probably infects the skin via areas of minimal trauma. Risk factors include... (Review)
Review
INTRODUCTION
Warts are caused by the human papillomavirus (HPV), of which there are over 100 types. HPV probably infects the skin via areas of minimal trauma. Risk factors include use of communal showers, occupational handling of meat, and immunosuppression. In immunocompetent people, warts are harmless and resolve as a result of natural immunity within months or years.
METHODS AND OUTCOMES
We conducted a systematic review and aimed to answer the following clinical question: What are the effects of treatments for warts (non-genital)? We searched: Medline, Embase, The Cochrane Library, and other important databases up to October 2013 (Clinical Evidence reviews are updated periodically; please check our website for the most up-to-date version of this review). We included harms alerts from relevant organisations such as the US Food and Drug Administration (FDA) and the UK Medicines and Healthcare products Regulatory Agency (MHRA).
RESULTS
We found 17 studies that met our inclusion criteria. We performed a GRADE evaluation of the quality of evidence for interventions.
CONCLUSIONS
In this systematic, review we present information relating to the effectiveness and safety of the following interventions: intralesional bleomycin; intralesional candida antigen; contact immunotherapy; cryotherapy; duct tape occlusion; photodynamic treatment; pulsed dye laser; surgical procedures; and topical salicylic acid.
Topics: Bleomycin; Cryotherapy; Humans; Immunotherapy; Lasers, Dye; Papillomaviridae; Papillomavirus Infections; Photochemotherapy; Salicylic Acid; Warts
PubMed: 24921240
DOI: No ID Found -
Reproductive Sciences (Thousand Oaks,... Aug 2022Polycystic ovary syndrome (PCOS) is a gynecological endocrine disorder and the leading cause of anovulatory female infertility. This study aimed to systematically review... (Review)
Review
Polycystic ovary syndrome (PCOS) is a gynecological endocrine disorder and the leading cause of anovulatory female infertility. This study aimed to systematically review the effects of curcumin or turmeric on PCOS-related parameters. PubMed, Scopus, Embase, and Web of Knowledge databases and Google Scholar were searched up to August 2021 using relevant keywords. All original articles evaluating the effects of turmeric/curcumin on PCOS were eligible. Out of 107 documents, eight animal studies and five randomized placebo-controlled clinical trials (RCTs) assessing the impact of curcumin on PCOS met our inclusion criteria. The reviewed animal studies indicated the beneficial effects of curcumin on the management of hormonal and metabolic disturbances in the PCOS condition. These effects also were confirmed in some, but not all, included RCTs. Therefore, despite promising animal results, the present literature is limited to conclude the beneficial effects of curcumin on the clinical management of PSCO symptoms. The impact of bioavailability-improved formulations of curcumin on PCOS should be assessed in further well-designed RCTs with longer duration and higher doses of curcumin. Besides, mechanistic investigations on the effects of curcumin on PCOS are also recommended.
Topics: Animals; Curcumin; Female; Humans; Infertility, Female; Polycystic Ovary Syndrome
PubMed: 35157259
DOI: 10.1007/s43032-021-00826-6 -
Advances in Nutrition (Bethesda, Md.) Nov 2023Accumulation of deoxyribonucleic acid (DNA) damage diminishes cellular health, increases risk of developmental and degenerative diseases, and accelerates aging.... (Review)
Review
Protective Effects of Micronutrient Supplements, Phytochemicals and Phytochemical-Rich Beverages and Foods Against DNA Damage in Humans: A Systematic Review of Randomized Controlled Trials and Prospective Studies.
Accumulation of deoxyribonucleic acid (DNA) damage diminishes cellular health, increases risk of developmental and degenerative diseases, and accelerates aging. Optimizing nutrient intake can minimize accrual of DNA damage. The objectives of this review are to: 1) assemble and systematically analyze high-level evidence for the effect of supplementation with micronutrients and phytochemicals on baseline levels of DNA damage in humans, and 2) use this knowledge to identify which of these essential micronutrients or nonessential phytochemicals promote DNA integrity in vivo in humans. We conducted systematic literature searches of the PubMed database to identify interventional, prospective, cross-sectional, or in vitro studies that explored the association between nutrients and established biomarkers of DNA damage associated with developmental and degenerative disease risk. Biomarkers included lymphocyte chromosome aberrations, lymphocyte and buccal cell micronuclei, DNA methylation, lymphocyte/leukocyte DNA strand breaks, DNA oxidation, telomere length, telomerase activity, and mitochondrial DNA mutations. Only randomized, controlled interventions and uncontrolled longitudinal intervention studies conducted in humans were selected for evaluation and data extraction. These studies were ranked for the quality of their study design. In all, 96 of the 124 articles identified reported studies that achieved a quality assessment score ≥ 5 (from a maximum score of 7) and were included in the final review. Based on these studies, nutrients associated with protective effects included vitamin A and its precursor β-carotene, vitamins C, E, B1, B12, folate, minerals selenium and zinc, and phytochemicals such as curcumin (with piperine), lycopene, and proanthocyanidins. These findings highlight the importance of nutrients involved in (i) DNA metabolism and repair (folate, vitamin B, and zinc) and (ii) prevention of oxidative stress and inflammation (vitamins A, C, E, lycopene, curcumin, proanthocyanidins, selenium, and zinc). Supplementation with certain micronutrients and their combinations may reduce DNA damage and promote cellular health by improving the maintenance of genome integrity.
Topics: Humans; Prospective Studies; Selenium; Lycopene; Cross-Sectional Studies; Curcumin; Proanthocyanidins; Randomized Controlled Trials as Topic; Vitamins; Vitamin A; Micronutrients; Folic Acid; Zinc; Beverages; Phytochemicals; DNA; DNA Damage; Biomarkers; Dietary Supplements
PubMed: 37573943
DOI: 10.1016/j.advnut.2023.08.004