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International Journal For Vitamin and... Apr 2023Sexual dysfunction can adversely affect the quality of life, self-confidence, and interpersonal relationships. Some studies reported a relationship between vitamin... (Review)
Review
Sexual dysfunction can adversely affect the quality of life, self-confidence, and interpersonal relationships. Some studies reported a relationship between vitamin supplementation and sexual health. This systematic review aimed to evaluate the effect of vitamins on female and male sexual function. All relevant English and Persian articles published in English databases (Medline, Scopus, Cochrane Library, Web of Sciences, Psycho-Info, and Proquest) and Farsi databases (SID and Magiran) until July 2020 were searched. The Cochrane Handbook for Systematic Reviews of Interventions was used for assessing the risks of bias. A total of 11 randomized controlled trials (RCTs) on 337 women, 472 men, and 35 couples were included. One study reported that vitamin D 300000 IU supplement administrated twice through intramuscular injection (at the beginning and after four weeks) had a significant effect on female sexual function (p<0.05), whereas another study showed that vitamin D 2000 IU supplement for six months did not have any significant effect on female sexual function (p>0.05). A study reported the significant effect of niacin (vitamin B3) 1500 mg daily for 12 weeks on erectile function (p=0.004). The results showed that vitamins A, C, and E had no significant effect on male and female sexual function. The conduction of trials with long-term interventions is recommended to reach a more definitive conclusion about the effect of vitamins on sexual function.
Topics: Female; Humans; Male; Dietary Supplements; Vitamin A; Vitamin D; Vitamin K; Vitamins
PubMed: 33779240
DOI: 10.1024/0300-9831/a000703 -
The Journal of Arthroplasty Oct 2019Knee kinematics is an analysis of motion pattern that is utilized to assess a comparative, biomechanical performance of healthy nonimplanted knees, injured nonimplanted... (Meta-Analysis)
Meta-Analysis
Knee kinematics is an analysis of motion pattern that is utilized to assess a comparative, biomechanical performance of healthy nonimplanted knees, injured nonimplanted knees, and various prosthetic knee designs. Unfortunately, a consensus between implanted knee kinematics and outcomes has not been reached. One might hypothesize that the kinematic variances between the nonimplanted and implanted knee might play a role in patient dissatisfaction following TKA. There is a wide range of TKA designs available today. With such variety, it is important for surgeons and engineers to understand the various geometries and kinematic profiles of available prostheses. The purpose of this review is to provide readers with the pertinent information related to TKA kinematics.
Topics: Aged; Arthroplasty, Replacement, Knee; Biomechanical Phenomena; Computer-Aided Design; Female; Fluoroscopy; Humans; Imaging, Three-Dimensional; Knee; Knee Joint; Knee Prosthesis; Magnetic Resonance Imaging; Male; Polyethylene; Prosthesis Design; Prosthesis Failure; Range of Motion, Articular; Rotation
PubMed: 31229370
DOI: 10.1016/j.arth.2019.05.037 -
Journal of Neurology, Neurosurgery, and... Dec 2020To assess the efficacy and safety of Aβ-targeting agents for mild to moderate Alzheimer's disease. (Meta-Analysis)
Meta-Analysis
OBJECTIVE
To assess the efficacy and safety of Aβ-targeting agents for mild to moderate Alzheimer's disease.
METHODS
The MEDLINE, Embase, Cochrane Central Register of Controlled Trials, PsycINFO, ClinicalTrials.gov and the WHO's International Clinical Trials Registry Platform search portal were searched from their inception to April 2020. We generated pooled estimates using random effects meta-analyses.
RESULTS
Nineteen randomised controlled trials, of which 17 had a low risk of bias, included 12 903 participants. The meta-analysis showed no difference in the cognitive subscale of Alzheimer's Disease Assessment Scale (ADAS-Cog) between anti-Aβ drugs and placebo (mean difference (MD): 0.20, 95% CI -0.40 to 0.81; =99.8%; minimal important difference 3.1-3.8 points, moderate-certainty evidence). For ADAS-Cog, results suggested that one drug that increases Aβ clearance may differ in effect (MD: -0.96, 95% CI -0.99 to -0.92) from drugs that reduce Aβ production (MD: 0.78, 95% CI 0.25 to 1.32) (interaction p<0.000001); this difference also existed in the outcome of MMSE and CDR-SOB. Compared with placebo, anti-Aβ drug-related adverse events were as follows: anxiety, depression, diarrhoea, fatigue, rash, syncope and vomit.
DISCUSSION
From current evidence, anti-Aβ interventions are unlikely to have an important impact on slowing cognitive or functional decline. Although the subgroup analysis suggested possible benefits from Aβ clearance drugs, the analysis has limited credibility, and a benefit from drugs that increase clearance, if real, is very small.
TRIAL REGISTRATION NUMBER
PROSPERO registration number CRD42019126272.
Topics: Acitretin; Alanine; Alzheimer Disease; Amyloid beta-Peptides; Antibodies, Monoclonal, Humanized; Anxiety; Azepines; Clioquinol; Copper; Cyclic S-Oxides; Depression; Diarrhea; Exanthema; Fatigue; Flurbiprofen; Humans; Immunoglobulins, Intravenous; Inositol; Mental Status and Dementia Tests; Minimal Clinically Important Difference; Orotic Acid; Oxadiazoles; Severity of Illness Index; Sulfonamides; Syncope; Thiadiazines; Treatment Outcome; Vomiting
PubMed: 33046560
DOI: 10.1136/jnnp-2020-323497 -
Critical Reviews in Food Science and... 2022The aim of this study was to perform a systematic review and meta-analysis on randomized controlled trials investigating the effects of carotenoids on selected... (Meta-Analysis)
Meta-Analysis
The aim of this study was to perform a systematic review and meta-analysis on randomized controlled trials investigating the effects of carotenoids on selected inflammatory parameters. PubMed, SCOPUS, and Web of science were searched from inception until April 2021. The random-effect model was used to analyze data and the overall effect size was computed as weighted mean difference (WMD) and corresponding 95% of confidence interval (CI). A total of 26 trials with 35 effect sizes were included in this meta-analysis. The results indicated significant effects of carotenoids on C-reactive protein (CRP) (WMD: ‒0.54 mg/L, 95% CI: ‒0.71, ‒0.37, < 0.001), and interleukin-6 (IL-6) (WMD: ‒0.54 pg/mL, 95% CI: ‒1.01, ‒0.06, = 0.025), however the effect on tumor necrosis factor-alpha (TNF-α) was not significant (WMD: ‒0.97 pg/ml, 95% CI: ‒1.98, 0.03, = 0.0.059). For the individual carotenoids, astaxanthin, (WMD: ‒0.30 mg/L, 95% CI: ‒0.51, ‒0.09, = 0.005), lutein/zeaxanthin (WMD: ‒0.30 mg/L, 95% CI: ‒0.45, ‒0.15, < 0.001), and β-cryptoxanthin (WMD: ‒0.35 mg/L, 95% CI: ‒0.54, ‒0.15, < 0.001) significantly decreased CRP level. Also, only lycopene (WMD: ‒1.08 pg/ml, 95%CI: ‒2.03, ‒0.12, = 0.027) led to a significant decrease in IL-6. The overall results supported possible protective effects of carotenoids on inflammatory biomarkers.
Topics: Beta-Cryptoxanthin; Biomarkers; C-Reactive Protein; Carotenoids; Dietary Supplements; Humans; Inflammation; Interleukin-6; Lutein; Lycopene; Randomized Controlled Trials as Topic; Tumor Necrosis Factor-alpha; Zeaxanthins
PubMed: 33998846
DOI: 10.1080/10408398.2021.1925870 -
Physiology & Behavior Oct 2022Lutein and zeaxanthin-xanthophyll carotenoids with antioxidant and anti-inflammatory characteristics-are present in the retina and the brain. High concentrations of... (Review)
Review
Lutein and zeaxanthin-xanthophyll carotenoids with antioxidant and anti-inflammatory characteristics-are present in the retina and the brain. High concentrations of these carotenoids have been positively related to cognitive performance. Therefore, this systematic review analyses the relationship between macular pigment density and cognitive functions. Most relevant databases were scoured for studies on healthy people relating cognitive functions to macular pigment optical density (MPOD). There were no age, sex, or race limitations. PROSPERO registration: CRD42021254833. Nineteen studies were included, seven randomized controlled trials (RCT) and eleven observational studies. The general aim of the studies was to examine the association between carotenoids (lutein, meso‑zeaxanthin and zeaxanthin) and cognitive function. Most observational studies correlates MPOD levels with cognitive function or brain activity. Besides, RCTs compared the cognitive function and/or brain activity after increasing lutein and zeaxanthin intake though dietary supplementation or avocado consumption. Dietary lutein and zeaxanthin intake increased MPOD in six of the seven clinical trials and significantly improved most of the cognitive functions studied. A wide variety of test and methodologies for measuring cognitive functions were observed. Memory, processing speed, attention and reasoning were the cognitive function significantly related to MPOD levels in adults. Brain activity also was related to MPOD, but the results were inconsistent. Only four of the eleven observational studies were based on young people and all studies showed a significant relationship between MPOD and cognitive functions. This systematic review showed a direct relationship among cognitive functions, macular pigment and the intake of lutein and zeaxanthin.
Topics: Adolescent; Adult; Cognition; Dietary Supplements; Humans; Lutein; Macular Pigment; Zeaxanthins
PubMed: 35752349
DOI: 10.1016/j.physbeh.2022.113891 -
Nutrients Oct 2022: Age-related macular degeneration (AMD) is a neurodegenerative ophthalmic disease. The purpose of this systematic review (SR) and meta-analysis was to evaluate if... (Meta-Analysis)
Meta-Analysis Review
: Age-related macular degeneration (AMD) is a neurodegenerative ophthalmic disease. The purpose of this systematic review (SR) and meta-analysis was to evaluate if dietary supplementation alone or in combinations might delay the progression of any of the stages of AMD. A SR and meta-analysis identifying cohort studies and randomized controlled trials (RCTs) evaluating the effect of supplements in patients diagnosed with AMD. PubMed, Scopus, Web of Science, CINAHL, and Cochrane were searched through 8th October 2021. Twenty studies, examining 5634 participants ranging from 55 to 80 years, were included in the SR. Eight studies were selected for meta-analysis (414 and 216 subjects in the intervention and control groups). Lutein and zeaxanthin plus -3 long-chain polyunsaturated fatty acids (-3 LC-PUFA) supplementation showed significant improvements in best-corrected visual acuity (BCVA) (SMD: -1.99, 95% CI: -3.33, -0.65) compared to the control group. Multifocal electroretinogram results (mfERG) were significantly improved overall (SMD: 4.59, 95% CI: 1.75, 7.43) after lutein plus zeaxanthin supplementation. Combinations of lutein and zeaxanthin with -3 LC-PUFA might be beneficial in preventing AMD progression and deterioration of visual function. Our results encourage initiating further studies with combinations of -3 LC-PUFA, lutein, and zeaxanthin especially in early AMD patients.
Topics: Humans; Zeaxanthins; Lutein; Xanthophylls; Visual Acuity; Double-Blind Method; Macular Degeneration; Dietary Supplements; Fatty Acids, Omega-3
PubMed: 36296956
DOI: 10.3390/nu14204273 -
Vaccine Feb 2016New adjuvants such as the AS- or the MF59-adjuvants improve vaccine efficacy and facilitate dose-sparing. Their use in influenza and malaria vaccines has resulted in a... (Meta-Analysis)
Meta-Analysis Review
INTRODUCTION
New adjuvants such as the AS- or the MF59-adjuvants improve vaccine efficacy and facilitate dose-sparing. Their use in influenza and malaria vaccines has resulted in a large body of evidence on their clinical safety in children.
METHODS
We carried out a systematic search for safety data from published clinical trials on newly adjuvanted vaccines in children ≤10 years of age. Serious adverse events (SAEs), solicited AEs, unsolicited AEs and AEs of special interest were evaluated for four new adjuvants: the immuno-stimulants containing adjuvant systems AS01 and AS02, and the squalene containing oil-in-water emulsions AS03 and MF59. Relative risks (RR) were calculated, comparing children receiving newly adjuvanted vaccines to children receiving other vaccines with a variety of antigens, both adjuvanted and unadjuvanted.
RESULTS
Twenty-nine trials were included in the meta-analysis, encompassing 25,056 children who received at least one dose of the newly adjuvanted vaccines. SAEs did not occur more frequently in adjuvanted groups (RR 0.85, 95%CI 0.75-0.96). Our meta-analyses showed higher reactogenicity following administration of newly adjuvanted vaccines, however, no consistent pattern of solicited AEs was observed across adjuvant systems. Pain was the most prevalent AE, but often mild and of short duration. No increased risks were found for unsolicited AEs, febrile convulsions, potential immune mediated diseases and new onset of chronic diseases.
CONCLUSIONS
Our meta-analysis did not show any safety concerns in clinical trials of the newly adjuvanted vaccines in children ≤10 years of age. An unexplained increase of meningitis in one Phase III AS01-adjuvanted malaria trial and the link between narcolepsy and the AS03-adjuvanted pandemic vaccine illustrate that continued safety monitoring is warranted.
Topics: Adjuvants, Immunologic; Adolescent; Child; Child, Preschool; Clinical Trials as Topic; Drug Combinations; Humans; Infant; Likelihood Functions; Lipid A; Polysorbates; Risk; Saponins; Squalene; Vaccines; alpha-Tocopherol
PubMed: 26740250
DOI: 10.1016/j.vaccine.2015.12.024 -
Intensive & Critical Care Nursing Oct 2023To identify the effectiveness of interventions to prevent corneal injury in critically ill, sedated, and mechanically ventilated patients. (Meta-Analysis)
Meta-Analysis Review
OBJECTIVE
To identify the effectiveness of interventions to prevent corneal injury in critically ill, sedated, and mechanically ventilated patients.
RESEARCH METHODOLOGY
A systematic review of intervention studies was conducted in the following electronic databases: Cumulative Index to Nursing and Allied Health Literature, Cochrane Central Register of Controlled Trials, Embase, Latin American and Caribbean Literature in Health Sciences, LIVIVO, PubMed, Scopus and Web of Science, and reported according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. Study selection and data extraction were performed by two independent reviewers. Quality assessment of the randomized and non-randomized studies was performed using the Risk of Bias (RoB 2.0) and ROBINS-I Cochrane tools, respectively, and the Newcastle-Ottawa Scale for cohort studies. The certainty of the evidence was assessed according to the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system.
RESULTS
15 studies were included. Meta-analysis showed that the risk of corneal injury in the lubricants group was 66% lower (RR = 0.34; 95 %CI: 0.13-0.92) than in the eye-taping group. The risk of corneal injury in the polyethylene chamber was 68% lower than in the eye ointment group (RR = 0.32; 95 %CI 0.07-1.44). The risk of bias was low in most of the studies included and the certainty of the evidence was evaluated.
CONCLUSIONS
The most effective interventions to prevent corneal injury in critically ill sedated mechanically ventilated, who have compromised blinking and eyelid closing mechanisms, are ocular lubrication, preferably gel or ointment, and protection of the corneas with a polyethylene chamber.
IMPLICATIONS FOR CLINICAL PRACTICE
Critically ill, sedated, and mechanically ventilated patients who have compromised blinking and eyelid closing mechanisms must receive interventions to prevent corneal injury. Ocular lubrication, preferably gel or ointment, and protection of the corneas with a polyethylene chamber were the most effective interventions to prevent corneal injury in critically ill, sedated, and mechanically ventilated patients. A polyethylene chamber must be made commercially available for critically ill, sedated, and mechanically ventilated patients.
Topics: Humans; Respiration, Artificial; Critical Illness; Ointments; Corneal Injuries; Polyethylenes
PubMed: 37172465
DOI: 10.1016/j.iccn.2023.103447 -
Journal of Oral Pathology & Medicine :... Jan 2024Oral submucous fibrosis (OSMF) is a well-known precancerous oral lesion, characterized by scarring, tissue fibrosis, and premalignant lesions. The goal of clinical... (Review)
Review
INTRODUCTION
Oral submucous fibrosis (OSMF) is a well-known precancerous oral lesion, characterized by scarring, tissue fibrosis, and premalignant lesions. The goal of clinical treatment is to reduce inflammation and improve patients' quality of life by enhancing mouth opening among others. Antioxidant treatment has shown promising results in inducing regression of lesions and preventing OSMF in high-risk individuals. This study investigates the effectiveness of various antioxidant agents against OSMF.
MATERIALS AND METHODS
The study followed PRISMA guidelines and searched three scientific databases: PubMed, Web of Science, and Scopus, using specific algorithms related to "antioxidant treatment," "burning sensation," and "mouth opening." The quality assessment of controlled clinical studies adhered to Cochrane guidelines.
RESULTS
The analysis included 19 clinical trials comparing different treatments, including various antioxidants. Aloe vera, curcumin, and lycopene, among others, showed positive outcomes in treating OSMF by improving burning sensation, mouth opening, tongue protrusion, and cheek flexibility.
CONCLUSION
Antioxidant therapies are found to be effective in treating OSMF, even when compared to conventional treatments such as corticosteroids. The study highlights the need for further research and standardization of clinical protocols.
Topics: Humans; Antioxidants; Oral Submucous Fibrosis; Quality of Life; Lycopene; Adrenal Cortex Hormones
PubMed: 38155549
DOI: 10.1111/jop.13503 -
Nutrients Apr 2024This review aims to evaluate the efficacy of any vitamin administration(s) in preventing and managing COVID-19 and/or long-COVID. Databases were searched up to May 2023... (Meta-Analysis)
Meta-Analysis Review
The Efficacy of Multivitamin, Vitamin A, Vitamin B, Vitamin C, and Vitamin D Supplements in the Prevention and Management of COVID-19 and Long-COVID: An Updated Systematic Review and Meta-Analysis of Randomized Clinical Trials.
This review aims to evaluate the efficacy of any vitamin administration(s) in preventing and managing COVID-19 and/or long-COVID. Databases were searched up to May 2023 to identify randomized clinical trials comparing data on the effects of vitamin supplementation(s) versus placebo or standard of care on the two conditions of interest. Inverse-variance random-effects meta-analyses were conducted to estimate pooled risk ratios (RRs) and 95% confidence intervals (CIs) for all-cause mortality between supplemented and non-supplemented individuals. Overall, 37 articles were included: two regarded COVID-19 and long-COVID prevention and 35 records the COVID-19 management. The effects of vitamin D in preventing COVID-19 and long-COVID were contrasting. Similarly, no conclusion could be drawn on the efficacy of multivitamins, vitamin A, and vitamin B in COVID-19 management. A few positive findings were reported in some vitamin C trials but results were inconsistent in most outcomes, excluding all-cause mortality (RR = 0.84; 95% CI: 0.72-0.97). Vitamin D results were mixed in most aspects, including mortality, in which benefits were observed in regular administrations only (RR = 0.67; 95% CI: 0.49-0.91). Despite some benefits, results were mostly contradictory. Variety in recruitment and treatment protocols might explain this heterogeneity. Better-designed studies are needed to clarify these vitamins' potential effects against SARS-CoV-2.
Topics: Humans; Dietary Supplements; COVID-19; Vitamins; Vitamin D; Randomized Controlled Trials as Topic; Ascorbic Acid; SARS-CoV-2; Vitamin A; COVID-19 Drug Treatment; Vitamin B Complex
PubMed: 38732592
DOI: 10.3390/nu16091345