Bioactive functional ingredients from aquatic origin: a review of recent progress in marine-derived nutraceuticals.

There is increasing demand from consumers for healthier and more sustainable foods. The marine biosphere is a rich source of health-promoting substances like bioactive peptides, polysaccharides, polyunsaturated lipids, carotenoids, polyphenolic compounds, minerals, saponins, and phytosterols. These substances display a myriad of potentially beneficial biological functions including antioxidant, antimicrobial, anticancer, anti-diabetic, anti-obesity, anti-Alzheimer, anti-fibrotic, neuroprotective, sleep-enhancing, lipid-lowering, wound healing, and skin protection activities. This review provides an update on recent research on bioactive ingredients derived from aquatic sources and highlights their potential application in the food, supplement, and pharmaceutical industries. Key techno-functional and sensorial attributes of these substances are reviewed, as well as their gastrointestinal fate and potential toxicity. This review should provide academia and industry with new insights into the potential application of marine bioactives in products intended to improve human health and wellbeing.

Effects of Rosa damascena (Damask rose) on menstruation-related pain, headache, fatigue, anxiety, and bloating: A systematic review and meta-analysis of randomized controlled trials.

Recent studies have reported inconclusive results regarding the therapeutic effects of Rosa damascena on the outcomes of primary dysmenorrhea (PD) and premenstrual syndrome (PMS). Hence, this study is aimed to summarize the findings of randomized controlled trials (RCTs) regarding the effects of this treatment on menstruation-related pain as the primary outcome and menstruation-related headache, fatigue, anxiety, and bloating as the secondary outcomes. This study evaluated parallel-group and cross-over RCTs on aromatherapy, topical treatment, or oral intake of R. damascena products for the treatment groups versus placebo, nontreated, or conventional treatment groups. Seven electronic databases (Web of Science Core Collection, Scopus, Embase, CENTRAL, CINAHL, SID, and MagIran) and one search engine (PubMed) were searched from inception to January 15, 2021. Of 1468 trials found in the initial search, 983 potentially relevant articles were screened by title and abstract. After examining the full-text of 13 studies for compliance with the inclusion criteria, seven studies were considered eligible for this review. A random-effects model was used to pool the data; otherwise, a narrative summary was presented. The retrieved studies were conducted on females with PD or PMS, aged 18-35 years. The total sample size of the intervention and comparator arms was 276 and 272. The results showed that R. damascena had a nonsignificant alleviating effect on the menstruation-related pain (weighted mean difference [WMD]: -0.47; 95% confidence interval [CI]: -1.25, 0.31; P = 0.234). Such findings were also found for menstruation-related anxiety (WMD: -0.40; 95% CI: -0.91, 0.11; P = 0.125). However, the treatment significantly reduced the menstruation-related headache (WMD: -0.42; 95% CI: -0.74, -0.11; P = 0.008), fatigue (WMD: -0.48; 95% CI: -0.87, -0.09; P = 0.015), and bloating (WMD: -0.72; 95% CI: -1.21, -0.22; P = 0.005). Since R. damascena had no significant effects on menstruation-related pain and anxiety, further studies with improved methodological quality are suggested to evaluate the effects of the treatment on these symptoms, using different dosages and durations.

Rosa Damascena mill for treating adults' anxiety, depression, and stress: A systematic review and dose-response meta-analysis of randomized controlled trials.

Recent studies have reported conflicting findings on the antianxiety, antidepressant, and anti-stress properties of Rosa Damascena Mill (RDM). Therefore, the present systematic review and meta-analysis were conducted on the effects of RDM for treating anxiety, depression, and stress amongst adults. The online data sources of Cochrane Central Register of Controlled Trials, PubMed, Scopus, Web of Science, Embase, ProQuest, and Scientific Information Database were searched from inception to June 30, 2021. The randomized controlled trials (RCTs), which examined the effects of RDM (in any form of administration) on adults' anxiety, depression, and stress, were included. A random-effects model was applied to pool the data, and a total of 32 publications were included. The results of the meta-analysis revealed that administration of RDM significantly reduced state anxiety (effect size [ES]: 24, standardized mean difference [SMD]: -1.74, 95% confidence interval [CI]: -2.29, -1.20; p < .001), depression (ES: 7, SMD: -0.87, 95% CI: -1.47, -0.28; p = .004), and stress (ES: 4, SMD: -1.33, 95% CI: -1.98, -0.69; p < .001). However, the treatment had no significant effect on trait anxiety (ES: 6, weighted mean difference: -0.75, 95% CI: -1.93, 0.43; p = .214). The association between the total administration dosage and/or duration of RDM and the changes in state anxiety and depression was not dose-dependent. Most RCTs had a fair methodological quality based on the Cochrane risk of bias assessment tool. Besides, the quality of evidence ranged from very low to moderate according to the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) approach. Hence, further high-quality RCTs are needed to draw reliable conclusions regarding the use of RDM for treating adults' anxiety, depression, and stress.

Effects of Relaxation Techniques on Acute Postlaminectomy Pain: A Three-Arm Randomized Controlled Clinical Trial.

PURPOSE: This study compared the effects of Benson relaxation with progressive muscle relaxation on pain severity after laminectomy. DESIGN: Three-arm randomized, nonblinded, and parallel group trial. METHODS: The study was conducted with 93 patients who underwent lumbar laminectomy. Patients were randomly assigned to three groups of Benson relaxation + routine care (n = 31), progressive muscle relaxation + routine care (n = 31), and routine care (n = 31). The two relaxation methods were performed at 2 (time 1), 12 (time 2), and 24 (time 3) hours after patients' regaining full consciousness in postoperative wards. Pain severity was assessed using the visual analog scale once before laminectomy, before and also 20 minutes after each relaxation session. In the control group, pain severity was measured at the same times as in the two relaxation groups. FINDINGS: Both Benson relaxation and progressive muscle relaxation resulted in a significant reduction in pain severity in comparison with the control group at all three measurement times (except at time 1 in the progressive muscle relaxation group). However, no significant differences were found between Benson relaxation and progressive muscle relaxation in any of the three times. CONCLUSIONS: The results suggest that both Benson and progressive muscle relaxation techniques can decrease acute postlaminectomy pain in the immediate postoperative period in adult patients.

Effects of relaxation on self-esteem of patients with cancer: a randomized clinical trial.

BACKGROUND AND OBJECTIVES: Cancer is usually associated with decreased self-esteem. Relaxation is one of the most effective methods to promote self-esteem of patients with chronic diseases. Hence, the present study aimed to investigate the effects of relaxation on self-esteem of patients with cancer. METHODS: This randomized clinical trial was conducted on 80 patients with cancer. The samples were selected by convenience sampling method and were randomly divided into experimental and control groups. In the experimental group, the patients implemented relaxation techniques once a day for 30 min during 60 consecutive days in addition to receiving routine care, while patients in the control group received only routine care. Before and after the intervention, the Persian version of the Coopersmith Self-Esteem Inventory (CSEI) was completed. RESULTS: After the interventions, significant differences were observed between groups in favor of the relaxation group in total score of CSEI and all its subscales (P = 0.0001). In the experimental group, a significant increase in total score and all subscales of CSEI was observed after the intervention (P = 0.001), whereas in the control group, a significant decrease was found in all dimensions (P = 0.001). CONCLUSION: The relaxation seems to be potentially effective in promoting self-esteem of patients with cancer. Further studies, particularly randomized clinical trials with higher sample size and more power, are needed to confirm the obtained findings.

The Effect of l-Arginine on Dural Healing After Experimentally Induced Dural Defect in a Rat Model.

BACKGROUND: Incomplete repair of the dura mater may result in numerous complications such as cerebrospinal fluid leakage and meningitis. For this reason, accurate repair of the dura mater is essential. In this study, the effect of systemic and local supplementation of l-arginine on dural healing was evaluated. METHODS: Thirty male Wistar rats were used and divided into control, local, and systemic l-arginine groups, with 10 rats in each. In each group, a 5-mm experimental incision was made at the lumbar segment of the dura mater and cerebrospinal fluid leakage was induced. Each group was divided into 2 subgroups and at the end of the first and sixth weeks, the rats were killed and the damaged segments of the dura were separated, histologically evaluated and the dural healing indicators including cell types, granulation tissue formation, collagen deposit, and vascularization were compared between groups. RESULTS: The systematic supplementation of l-arginine showed a significant effect in dural healing compared with the control group. After the first week, granulation formation increased considerably (P < 0.031), and after 6 weeks, collagen deposition and neovascularization were significantly different compared with the control group (P < 0.030; P < 0.009). In comparison between different groups at the end of the first and sixth weeks, maximum changes in healing indicators were observed in the systemic group and the least variations were related to the control group. CONCLUSIONS: The systemic supplementation of l-arginine may accelerate dural healing by increasing the level of granulation tissue formation, collagen deposition, and vascularization.

L-arginine supplementation and risk factors of cardiovascular diseases in healthy men: a double-blind randomized clinical trial.

Context: The effect of L-arginine on risk factors of cardiovascular diseases (CVD) has mostly focused on western countries. Since cardiovascular diseases is the second cause of death in Iran and, as far as we are aware, there have been no studies about the effect of L-arginine on CVD risk factors, the aim of this trial was to assess the effects of L-arginine supplementation on CVD risk factors in healthy men. Objective: The purpose of this study was to evaluate the effect of low-dose L-arginine supplementation on CVD risk factors (lipid profile, blood sugar and blood pressure) in Iranian healthy men. Design, setting, participants: We conducted a double-blind randomized controlled trial in 56 patients selected from sport clubs at the Isfahan University of Medical Science between November 2013 and December 2013. Interventions: Healthy men received L-arginine supplementation (2000 mg daily) in the intervention group or placebo (2000 mg maltodextrin daily) in the control group for 45 days. Main outcome measure: The primary outcome measures were we measured the levels of fasting blood sugar, blood pressure and lipid profile including triglyceride (TG), cholesterol, LDL and HDL in healthy subjects. It was hypothesized that these measures would be significantly improved in those receiving L-arginine supplementation. at the beginning and end of the study. Results: In this trial, we had complete data for 52 healthy participants with mean age of 20.85±4.29 years. At the end of study, fasting blood sugar (P=0.001) and lipid profile (triglycerideTG (P<0.001), cholesterol (P<0.001), LDL (P=0.04), HDL (P=0.015)) decreased in the L-arginine group but we found no significant change in the placebo group. In addition, the reduction of fasting blood sugar and lipid profile in L-arginine was significant compared with placebo group. No significant changes were found about systolic (P=0.81) and diastolic blood pressure either in L-arginine or placebo group. (P=0.532). Conclusion: The use of L-arginine significantly improved outcomes compared to placebo.

Effects of turmeric, shallot extracts, and their combination on quality characteristics of vacuum-packaged rainbow trout stored at 4 ± 1 °C.

The effects of turmeric extract (T), shallot extract (Sh), and their combination (T + Sh) on the quality of vacuum-packaged rainbow trout (Oncorhynchus mykiss) were examined during refrigerated storage (4 ± 1 °C) over a period of 20 d. Fish samples were divided into 4 batches; 3 batches were treated by dipping for 30 min in aqueous solution of turmeric extract (1.5%; v/v), shallot extract (1.5%; v/v), or turmeric and shallot extract combination (1.5%+ 1.5% v/v), while the fourth batch was dipped in distilled water as a control sample. The control and the treated fish samples were analyzed periodically for microbiological (total viable count, psychrotrophic count), chemical (total volatile base nitrogen [TVB-N], peroxide value [PV], and thiobarbituric acid [TBA] value), and sensory characteristics. The results indicated that the effect of the T, Sh, and T + Sh on the fish samples were to enable the good quality characteristics to be retained longer and to extend the shelf life during the refrigerated storage.