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Background This study was designed to evaluate the association between dietary total antioxidant capacity and clinical and biochemical variables in patients with osteoarthritis. Methods This cross-sectional study was conducted among 160 patients with mild-to-moderate knee osteoarthritis. The Likert version of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC Index) was used to assess the severity of clinical symptoms in patients with knee osteoarthritis. The secondary outcomes included inflammatory and oxidative stress biomarkers. The participants' usual diets were assessed using a food frequency questionnaire (FFQ), and the dietary total antioxidant capacity (TAC) was calculated based on the ferric reducing antioxidant power method. Additionally, clinical and biochemical variables were evaluated using standard methods. Results The mean age of the participants was 57.2 ± 8.1 years, and 55.6% of them were females. The dietary TAC scores in this study ranged from 3.67 to 24.72, with a mean of 12.05 ± 5.3. We found a significant inverse trend between the dietary TAC score and the total Western Ontario and McMaster Universities Osteoarthritis (WOMAC) score ( P  = 0.001), as well as the WOMAC stiffness ( P  = 0.008) and WOMAC physical function scores ( P  = 0.001). Furthermore, dietary TAC was inversely associated with serum concentrations of interleukin-6 (IL-6) ( β  = − 0.18, P  = 0.020), tumor necrosis factor-α (TNF-α) ( β  = − 0.67, P  < 0.001), matrix metalloproteinase-1 (MMP-1) ( β  = − 0.33, P  < 0.001), and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) ( β  = − 0.22, P  = 0.005) levels. Conclusion The results of this study demonstrate an inverse association between dietary total antioxidant capacity and clinical and biochemical variables in patients with osteoarthritis.

Aim Knee osteoarthritis (KOA) is a prevalent chronic condition associated with significant pain, disability, and healthcare costs, particularly among the elderly population. Despite the considerable burden of KOA, effective treatment options for managing the condition’s underlying causes remain limited. This case-control study aims to investigate the relationship between dietary total antioxidant capacity (DTAC) and knee osteoarthritis. Methods This case-control study was conducted on 105 patients with confirmed KOA and 210 controls. KOA was diagnosed based on the American College of Rheumatology criteria. Dietary total antioxidant capacity (DTAC) was calculated based on the ferric-reducing antioxidant power method. Results The mean age and BMI of the participants were 53.6 ± 8.8 years old and 27.3 ± 2.7 kg/m 2 , respectively. The study participant’s DTAC score ranged from 3.56 to 25.32 with a mean and SD of 12.46 ± 5.12. In the crude model, individuals in the highest quartile of DTAC score had 71% lower odds of having knee osteoarthritis compared to those in the first quartile (OR: 0.29, 95%CI: 0.15 to 0.58, P-trend < 0.001). These associations remained significant after adjustment for potential confounders including age, sex, energy intake, family history of osteoarthritis, vitamin D and calcium use, physical activity level, cigarette smoking and BMI. Although the odds of having knee osteoarthritis decreased with increasing quartiles of DTAC in both sexes, this relationship was stronger among males than females. Conclusion The results of this study showed that there was an inverse correlation between DTAC and KOA among the Iranian patients with KOA.

Chronic kidney disease (CKD) is a major health problem worldwide. Evidence supporting the use of probiotic, prebiotic, and synbiotic supplementation in the management of CKD is mixed, although some studies suggest they may be useful. A systematic review and meta-analysis was performed to evaluate the effectiveness of probiotic, prebiotic, and synbiotic supplementation for improving cardiometabolic and oxidative stress parameters in patients with CKD. A comprehensive key word search was performed in EMBASE, Medline, Scopus, Cochrane Central, and Web of Science until April 2020. Randomized controlled trials investigating the effectiveness of probiotic, synbiotic, and prebiotic supplementation for the management of adults with CKD were included. Primary outcomes were measures of cardiometabolic parameters such as cholesterol and fasting blood glucose. Secondary outcomes were measures of oxidative stress (eg, malondialdehyde levels) and body mass index. Random effects meta-analyses were used to estimate mean treatment effects. Results are reported as standardized mean differences (SMDs) and 95% CIs. Fourteen articles were included. In patients with CKD, probiotic, prebiotic, and synbiotic supplementation significantly reduced total cholesterol (SMD, −0.25; 95% CI, −0.46 to −0.04; I2 = 00.0%), fasting blood glucose (SMD, −0.41; 95% CI, −0.65 to −0.17; I2 = 00.0%), homeostatic model assessment of insulin resistance (SMD, −0.63; 95% CI, −0.95 to −0.30; I2 = 43.3%), insulin levels (SMD, −0.49; 95% CI, −0.90 to −0.08; I2 = 65.2%), high-sensitivity C-reactive protein levels (SMD, −0.52; 95% CI, −0.81 to −0.22; I2 = 52.7%), and malondialdehyde levels (SMD, −0.79; 95% CI, −1.22 to −0.37; I2 = 69.8%) compared with control interventions. Supplementation significantly increased the quantitative insulin sensitivity check index (SMD, 0.78; 95% CI, 0.51 to 1.05; I2 = 00.0%), total antioxidant capacity (SMD, 0.42; 95% CI, 0.18 to 0.66; I2 = 00.0%), and glutathione levels (SMD, 0.52; 95% CI, 0.19 to 0.86; I2 = 37.0%). Probiotic, prebiotic, and synbiotic supplementation seems to be a promising intervention for improving cardiometabolic and oxidative stress parameters in patients with CKD. [Display omitted] •This is the first systematic review on prebiotic, probiotic, and synbiotic supplementation for patients with Chronic Kidney Disease (CKD)•Probiotic, prebiotic, and synbiotic supplementation improves several cardiometabolic parameters in patients with CKD.•Probiotic, prebiotic, and synbiotic supplementation appears be a promising intervention for improving oxidative stress parameters in patients with CKD.

Purpose This study aimed to summarize earlier studies on the effects of RS consumption on the serum levels of inflammatory biomarkers. Methods A comprehensive search was done in the electronic databases that published from 1988 up to May 2019. Two reviewers independently performed screening, data extraction, and risk-of-bias assessment. We used from the effect size, as estimated by the mean difference to perform the fixed method meta-analysis. Results Overall, 13 studies with 14 effect sizes met the inclusion criteria and were included in the final analysis. Sample size of these studies ranged from 15 to 75 and intervention duration ranged from 4 to 14 weeks. Meta-analysis revealed that higher consumption of resistant starch caused a significant reduction in the interleukin 6 (weighted mean difference = − 1.11 pg/mL; 95% CI: − 1.72, − 0.5 pg/mL; P = < 0.001) and tumor necrosis factor alpha (weighted mean difference = − 2.19 pg/mL; 95% CI: − 3.49, − 0.9 pg/mL; P  = 0.001) levels. However, no significant changes were found in C-reactive protein concentration (weighted mean difference = − 0.21 mg/L; 95% CI: − 1.06, 0.63 mg/L; P  = 0.61). Moreover, the changes in interleukin 6 concentration was dependent on study quality and intervention duration. Conclusion The current meta-analysis indicated that RS intake can improve some inflammatory biomarkers. More research, with a large sample sizes and accurate design is recommended.

Positive surgical margins (PSM) following partial nephrectomy (PN) for renal cell carcinoma (RCC) are a concern due to potential implications for recurrence and survival. This systematic review and meta-analysis assess the impact of PSM on recurrence rates and progression-free survival in RCC patients. We conducted a systematic search of PubMed, Embase, Scopus, Cochrane, and Web of Science databases from inception through July 2024. Studies examining recurrence and survival outcomes in RCC patients with and without PSM post-PN were included. A random-effects model was applied to calculate pooled hazard ratios (HR) and 95% confidence intervals (CI) for recurrence and survival. Thirty studies met the inclusion criteria. Our analysis showed that PSM was significantly associated with a higher risk of local recurrence (HR = 2.13, 95% CI: 1.67-2.72) and a lower recurrence/progression-free survival (HR = 1.70, 95% CI: 1.40-2.07) compared to negative surgical margins. Subgroup analyses indicated consistent results across study designs and RCC histologic subtypes. The presence of PSM following PN for RCC is associated with a 2.13-fold increase in local recurrence and a 1.7-fold reduction in progression-free survival, emphasizing the need for precise margin management during surgery. These findings highlight the importance of optimizing surgical techniques and considering adjuvant treatment strategies for patients with PSM to improve oncologic outcomes.

In this cross-sectional investigation, the primary objective was to explore the correlation between the consumption of polyphenols and the likelihood of non-alcoholic fatty liver disease (NAFLD) in the adult population participating in the Hoveyzeh cohort. Data from the Hoveyzeh cohort study, part of the Persian Cohort Study, involving 10,009 adults aged 35–70, were analyzed. Exclusions were made for missing data, extreme energy intake, and liver cancer patients. Dietary habits were assessed using a food frequency questionnaire, and polyphenol intake was calculated using the Phenol Explorer database. Logistic regression analyses, adjusted for confounders, were performed to assess the relationship between polyphenol subclasses (total polyphenols, total flavonoids, phenolic acid, and lignin) and NAFLD. Among 9894 participants, those in the highest quintile of total polyphenol (OR 0.65, CI 0.5–0.84; P  = 0.007), phenolic acid (OR 0.67, CI 0.52–0.86; P  < 0.001), and lignin intake (OR 0.69, CI 0.52–0.87; P  = 0.001) demonstrated lower odds of NAFLD compared to the lowest quintile, even after adjusting for confounding factors. However, no significant association was found between total flavonoid intake and NAFLD (OR 1.26, CI 0.96–1.67; P  = 0.47). Subgroup analysis indicated a significant inverse association between total polyphenols and NAFLD in women (OR 0.64, CI 0.42–0.93; P  = 0.001). Higher intake of total polyphenols, phenolic acid, and lignin was associated with reduced odds of NAFLD among adults in the Hoveyzeh cohort. This suggests that dietary patterns rich in these polyphenols may play a role in mitigating the risk of NAFLD. Further interventional and longitudinal studies are needed to validate these findings and explore potential preventive strategies involving polyphenol-rich diets.

Background In recent years, the food security and dietary quality of many Iranian families have deteriorated due to unprecedented inflation. Nutrition education programs can be an effective and inexpensive method to improve food quality and security. The present study aimed to investigate the effect of a comprehensive nutrition education program for low-income women who are heads of households and are covered by the Zanjan province’s welfare. Methods The food security of 2600 female-headed households covered by the Welfare of Zanjan province was evaluated using a standard 6-item questionnaire. A total of 600 women with the highest food insecurity scores were selected for the comprehensive nutrition education program. The participants received six sessions of 1.5 h of courses about how to improve the quality of their diets and manage their budgets and be physically active. At the beginning of the study and one month after the completion of the intervention, the participants were asked to complete a questionnaire designed and validated by the investigators. The scores of each section before and after the intervention were compared using paired t-test method and p values ​​of < 0.05 were considered statistically significant. Results The prevalence of severe food insecurity among female-headed households who receive welfare support in Abhar, Khodabandeh, and Zanjan cities was 59.5%, 75%, and 62%, respectively. A total of 505 participants successfully completed the courses. After completion of the educational intervention, diet quality, physical activity, budgeting, and food safety scores of the participants increased by 6%, 4%, 4%, and 5%, respectively, which were statistically significant ( p  < 0.001). However, no significant difference was observed in the food insecurity scores. Conclusion The comprehensive nutrition education program without financial or nutritional support can have a small but significant impact on the improvement of the nutritional behaviors and dietary quality of low-income people.

Objective This study was designed to evaluate the impact of VLCKD on cardiovascular risk factors in patients with T2DM. Methods Until March 2024, extensive searches were conducted on PubMed, Scopus, Web of Science, Embase, and other relevant databases. The purpose was to identify clinical trials examining the impact of VLCKD on glycemic control, lipid profile, and blood pressure. The GRADE (Grading of Recommendations Assessment, Development, and Evaluation) method was used to assess the evidence’s degree of certainty. Results Our initial search found a total of 2568 records and finally 29 trials were included in final analysis. Our results showed that adherence from VLCKD led to significant reduction in fasting blood sugar (WMD= -11.68 mg/dl; 95% CI: -18.79, -4.56; P  = 0.001), HbA1c (WMD= -0.29; 95% CI: -0.44, -0.14; P  < 0.001), HOMA-IR(WMD= -0.71; 95% CI: -1.14, -0.29; P  = 0.001), insulin (WMD= -1.45; 95% CI: -2.54, -0.36; P  = 0.009), triglyceride (WMD= -17.95; 95% CI: -26.82, -9.07; P  < 0.001), systolic blood pressure (WMD= -2.85, 95% CI: -4.99, -0.71; P  = 0.009) and diastolic blood pressure (WMD= -1.40; 95% CI: -2.66, -0.13; P  = 0.03). We also found a significant increase in high-density lipoprotein (HDL) level after adherence from VLCKD diet (WMD = 3.93, 95% CI: 2.03, 5.84; P  = 0.000). We couldn’t find any significant differences between groups in term of LDL and total cholesterol levels. Conclusion People following a VLCKD experience a more significant improvement in cardiovascular risk factors when compared to individuals on control diets.

The Mediterranean diet (Med-Diet) is widely recognized for its protective effect in cardiovascular diseases (CVDs), less is known about the associations between health and adherence to the Prime Diet Quality Score (PDQS). This study investigates the relationship between adherence to the Med-Diet and PDQS with the risk of premature coronary artery disease (PCAD) in an Iranian population. A total of 3287 participants were included in this multicenter case-control study across various ethnic groups in Iran, categorized into PCAD cases ( n  = 2106) and controls ( n  = 1181). PCAD cases were defined as individuals with at least one coronary artery exhibiting ≥ 75% stenosis or a left main coronary artery with ≥ 50% stenosis, while controls had normal coronary arteries. Dietary intake was assessed using a semi-quantitative food frequency questionnaire (FFQ), previously validated for accuracy in the Iranian population Adherence to the Med-Diet was assessed using a standardized scoring system, awarding one point for higher consumption of beneficial food groups (such as vegetables, whole grains, legumes, fish, nuts, and a high monounsaturated-to-saturated fat ratio) and one point for lower consumption of less favorable foods (such as red and processed meats). The total score ranged from 0 to 9, with higher scores indicating greater adherence to the Med-Diet. The PDQS, a dietary quality index, evaluated adherence across 14 healthy and 7 unhealthy food groups, with higher scores reflecting better diet quality. Logistic regression models were employed to examine the association between dietary scores and PCAD risk. Participants with higher adherence to both the Med-Diet and PDQS had significantly lower odds of PCAD (OR = 0.30, 95% CI: 0.22, 0.40; P for trend < 0.001 for PDQS), with a stronger association observed for the Med-Diet (OR = 0.08, 95% CI: 0.06, 0.10; P for trend < 0.001). Additionally, higher adherence to the Med-Diet (OR = 0.04, 95% CI 0.03, 0.05) and PDQS (OR = 0.21, 95% CI: 0.17, 0.26) was inversely associated with PCAD severity in the fully adjusted model. This study showed a protective association of the Med-Diet and PDQS with reduced risk of PCAD in the Iranian population.

Tart cherries are rich in bioactive compounds, such as anthocyanins and other phytochemicals known to have antioxidant properties and exert cardiovascular protective effects. However, there is no definitive consensus on this context. The present systematic review and meta-analysis aimed to investigate the effect of tart cherry juice consumption on cardio-metabolic risk factors. A systematic search was conducted on electronic databases, including PubMed, Web of Science, Scopus, and Google Scholar from inception up to December 2021 to identify eligible RCT studies. A random-effect model was utilized to estimate the weighted mean difference (WMD) and 95% confidence (95% CI). Ten RCTs were included in the present meta-analysis. The pooled analysis revealed that tart cherry juice consumption led to a significant reduction in the fasting blood sugar (FBS) levels (WMD = −0.51 mg/dl [95% CI: −0.98, −0.06]). This lowering effect of FBS was robust in subgroups with cross-over studies, participants with age range ≥ 40, duration of follow-up ≤ 4 weeks, and baseline BMI ≥ 30. In contrast, tart cherry juice had no effect on total cholesterol (TC), triglycerides (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C), insulin, body mass index (BMI), fat mass, systolic and diastolic blood pressure. However, in the subgroup analysis, some significant effects were observed for insulin, TG, TC, LDL-C, and HDL-C. In summary, this meta-analysis showed that tart cherry juice mostly had a favorable effect on FBG levels. However, further RCTs with long-term intervention with different doses of administration are needed. •Tart cherries are rich in bioactive compounds.•Atherosclerosis is the principal cause of the development of cardiovascular disease.•Tart cherry juice consumption led to a significant reduction in the fasting blood sugar levels.•Tart cherry juice had no effect on lipid profile. total cholesterol (TC), triglycerides (TG), high density lipoprotein cholesterol (HDL-C), low density lipoprotein cholesterol (LDL-C).