The addition of antioxidants to frying oil reduces postprandial oxidative stress and the inflammatory response. ER stress may trigger both inflammation and oxidative stress processes. We aimed to ...determine the biological effects of the intake of four models of frying oils on postprandial ER stress in peripheral blood mononuclear cells. Twenty obese people received four breakfasts following a randomized crossover design, consisting of muffins made with different oils (virgin olive oil (VOO), sunflower oil (SFO), and a mixture of seed oils (SFO/canola oil) with either dimethylpolysiloxane (SOD) or natural antioxidants from olives (SOP) added), which were previously subjected to 20 heating cycles. ER stress was assessed by measuring the mRNA levels of sXBP1, BiP, CRT, and CNX in peripheral blood mononuclear cells. Our study showed that the intake of the muffins made with SFO induced the postprandial increase of the mRNA levels of the ER stress‐sensor sXBP1, and the ER stress related chaperones BiP and CRT (all p‐values <0.05). The harmful effects associated with the use of SFO as frying oil, in terms of inflammatory response and postprandial oxidative stress, may be partially mediated by the induction of postprandial ER stress.
•Depletion of estrogen after menopause causes oxidative stress.•Most of the studies of menopause compare only pre- and post-menopausal women.•We included groups of men to identify menopause-dependent ...changes.•Menopause-induced oxidative stress parallels a disruption in the circadian clock.•An additional increase in oxidative stress was due to aging, menopause-independent.
Menopause is characterized by the depletion of estrogen that has been proposed to cause oxidative stress. Circadian rhythm is an internal biological clock that controls physiological processes. It was analyzed the gene expression in peripheral blood mononuclear cells and the lipids and glucose levels in plasma of a subgroup of 17 pre-menopausal women, 19 men age-matched as control group for the pre-menopausal women, 20 post-menopausal women and 20 men age-matched as control group for the post-menopausal women; all groups were matched by body mass index. Our study showed a decrease in the expression of the oxidative stress-related gene GPX1, and an increase in the expression of SOD1 as consequence of menopause. In addition, we found that the circadian rhythm-related gene PER2 decreased as consequence of menopause. On the other hand, we observed a decrease in the expression of the oxidative stress-related gene GPX4 and an increase in the expression of CAT as a consequence of aging, independently of menopause. Our results suggest that the menopause-induced oxidative stress parallels a disruption in the circadian clock in women, and part of the differences in oxidative stress observed between pre- and post-menopausal women was due to aging, independent of menopause.
Clinical Trials.gov.Identifier: NCT00924937
Pet ownership positively influences clinical outcomes in cardiovascular prevention. Additionally, cardiovascular disease (CVD) has been previously linked to microbiota dysbiosis. We evaluated the ...influence of owning a pet and its relationship with the intestinal microbiota. We analyzed the gut microbiota from 162 coronary patients from the CORDIOPREV study (NCT00924937) according to whether they owned pets (n = 83) or not (n = 79). The pet-owner group was further divided according to whether they owned dogs only (n = 28) or not (n = 55). A 7-item pet-owners test score was used. Patients who owned pets had less risk of metabolic syndrome (MetS) (OR = 0.462) and obesity (OR = 0.519) and were younger (p < 0.001) than patients who did not own pets. Additionally, patients who owned dogs had less risk of MetS (OR = 0.378) and obesity (OR = 0.418) and were younger (p < 0.001) than patients who did not own pets. A preponderance of the genera Serratia and Coprococcus was found in the group of owners, while the genera Ruminococcus, an unknown genus of Enterobacteriaceae and Anaerotruncus were preponderant in the group of non-owners. In patients who owned dogs, Methanobrevibacter and two more genera, Coprococcus and Oscillospira, were more common. Our study suggests that the prevalence of MetS and obesity in CVD patients is lower in pet owners, and that pet ownership could be a protective factor against MetS through the shaping of the gut microbiota. Thus, owning a pet could be considered as a protective factor against cardiometabolic diseases.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, UILJ, UKNU, UL, UM, UPUK
Mild cognitive impairment (MCI) can progress to Alzheimer's disease (AD). When MCI is not properly controlled, the speed of deterioration can dramatically increase. Reduction of oxidative ...stress/inflammation and the modulation of the
could be new potential therapeutic targets for the prevention and treatment of AD. Consumption of specific nutrients, diets and probiotic supplementation have been evaluated for neurodegenerative disorders. We focus on a detailed description of the study methods and baseline characteristics of a clinical trial aiming to evaluate the efficacy of a combined nutritional intervention, i.e., a Mediterranean diet with probiotics, on cognitive capacity in a population with MCI.
In this randomized, latin-square crossover, double-blind, and controlled dietary intervention trial (clinicaltrials.gov NCT05029765), 47 MCI patients were randomized to consume three dietary interventions for 24-weeks each: (1) A Mediterranean diet supplemented with probiotics (10
colony-forming units of
and
); (2) A Mediterranean diet + placebo; and (3) A Healthy diet according to the World Health Organization (WHO) recommendations. Participants will be evaluated before and after each of the three intervention periods (each 24-weeks, with a total of 72-weeks) for adherence to the assigned diet, blood tests, cognitive performance, gut microbiota analysis and functional neuroimaging studies.
Fifty patients, ≥60 years-old and diagnosed with MCI, underwent randomization. A total of 47 patients completed follow-up dietary interventions (57.4% males), with a good glycemic control (HbA1c 5.8 ± 0.1%, fasting glucose and insulin 99.7 ± 3.3 mg/dL and 10.4 ± 0.9 mU/L, respectively), elevated systolic blood pressure (136.9 ± 2.1 mmHg) and increased degree of inflammation (high-sensitivity C-reactive protein, 8.8 ± 0.9 mg/dL). Baseline adherence to the Mediterranean diet was medium (7.5 ± 0.3 points on the score that ranged from 0 to 14 points).
The results of this clinical study would provide more evidence on the need for dietary therapeutic strategies, for clinical and individual practice, in the management of MCI patients to reduce the risk of AD development. Targeting lifestyle modifications in high-risk populations could prevent substantial cases of cognitive decline.
ClinicalTrials.gov, identifier NCT05029765.
Purpose
Using sunflower oil as frying oil increases postprandial oxidative stress, which is considered the main endogenous source of DNA oxidative damage. We aimed to test whether the protective ...effect of virgin olive oil and oil models with added antioxidants against postprandial oxidative stress may also protect against DNA oxidative damage.
Methods
Twenty obese people received four breakfasts following a randomized crossover design consisting of different oils virgin olive oil (VOO), sunflower oil (SFO), and a mixed seed oil (SFO/canola oil) with added dimethylpolysiloxane (SOX) or natural antioxidants from olives (SOP), which were subjected to 20 heating cycles.
Results
We observed the postprandial increase in the mRNA levels of
p53
,
OGG1
,
POLB
, and
GADD45b
after the intake of the breakfast prepared with SFO and SOX, and an increase in the expression of
MDM2
,
APEX1
, and
XPC
after the intake of the breakfast prepared with SFO, whereas no significant changes at the postprandial state were observed after the intake of the other breakfasts (all
p
values <0.05). We observed lower 8-OHdG postprandial levels after the intake of the breakfast prepared with VOO and SOP than after the intake of the breakfast prepared with SFO and SOX (all
p
values <0.05).
Conclusions
Our results support the beneficial effect on DNA oxidation damage of virgin olive oil and the oil models with added antioxidants, as compared to the detrimental use of sunflower oil, which induces p53-dependent DNA repair pathway activation.
Mediterranean and low-fat diets are effective in the primary prevention of cardiovascular disease. We did a long-term randomised trial to compare the effects of these two diets in secondary ...prevention of cardiovascular disease.
The CORDIOPREV study was a single-centre, randomised clinical trial done at the Reina Sofia University Hospital in Córdoba, Spain. Patients with established coronary heart disease (aged 20–75 years) were randomly assigned in a 1:1 ratio by the Andalusian School of Public Health to receive a Mediterranean diet or a low-fat diet intervention, with a follow-up of 7 years. Clinical investigators (physicians, investigators, and clinical endpoint committee members) were masked to treatment assignment; participants were not. A team of dietitians did the dietary interventions. The primary outcome (assessed by intention to treat) was a composite of major cardiovascular events, including myocardial infarction, revascularisation, ischaemic stroke, peripheral artery disease, and cardiovascular death. This study is registered with ClinicalTrials.gov, NCT00924937.
From Oct 1, 2009, to Feb 28, 2012, a total of 1002 patients were enrolled, 500 (49·9%) in the low-fat diet group and 502 (50·1%) in the Mediterranean diet group. The mean age was 59·5 years (SD 8·7) and 827 (82·5%) of 1002 patients were men. The primary endpoint occurred in 198 participants: 87 in the Mediterranean diet group and 111 in the low-fat group (crude rate per 1000 person-years: 28·1 95% CI 27·9–28·3 in the Mediterranean diet group vs 37·7 37·5–37·9 in the low-fat group, log-rank p=0·039). Multivariable-adjusted hazard ratios (HRs) of the different models ranged from 0·719 (95% CI 0·541–0·957) to 0·753 (0·568–0·998) in favour of the Mediterranean diet. These effects were more evident in men, with primary endpoints occurring in 67 (16·2%) of 414 men in the Mediterranean diet group versus 94 (22·8%) of 413 men in the low-fat diet group (multiadjusted HR 0·669 95% CI 0·489–0·915, log-rank p=0·013), than in 175 women for whom no difference was found between groups.
In secondary prevention, the Mediterranean diet was superior to the low-fat diet in preventing major cardiovascular events. Our results are relevant to clinical practice, supporting the use of the Mediterranean diet in secondary prevention.
Fundacion Patrimonio Comunal Olivarero; Fundacion Centro para la Excelencia en Investigacion sobre Aceite de Oliva y Salud; local, regional, and national Spanish Governments; European Union.
Abstract only Introduction: Microvascular circulation controls tissue perfusion. Its dysfunction is implicated in damage to the myocardium and is a predictor of cardiovascular events. It has been ...shown that short-term dietary interventions may influence microvascular endothelial function (MEF) in some populations. There is a lack of evidence on the long-term effect of healthy diet patterns on MEF in patients with coronary heart disease (CHD) and on whether this effect is modified by the risk of CHD recurrence. Hypothesis: the consumption of healthy diets (Mediterranean diet or Low-fat diet) improves the MEF of CHD patients in the long term, and this effect is interrelated with the risk of CHD recurrence. Methods: In the CORDIOPREV study, dietary intervention with a Mediterranean diet or a low-fat diet is being carried out in 1002 patients with CHD for 7 years. The effect of this dietary intervention on basal microvascular flow and the area of hyperemia reactive to hypoxia was evaluated in 664 patients by laser-Doppler flowmetry at baseline and after 6 years of intervention. The risk of recurrence of CHD in patients was evaluated according to the TRS2P risk score. Results: Basal flow and reactive hyperemia area improved after the dietary intervention in the population (basal flow 97.78 ± 2.79 vs. 179.31 ± 5.06 arbitrary perfusion units, 83.38% increase, p<0.001) (reactive hyperemia 4233.3 ± 127.73 vs. 9695.9 ± 205.23 arbitrary perfusion units per time, 129.04% increase, p<0.001), without finding differences due to the diet (p>0.05 for the diet-effect). When patients were stratified to low, medium or high risk of recurrence, the basal flow was similarly increased in all three groups, but the reactive hyperemia area was improved to a greater extent in patients in the low-risk group compared with those in the medium or high risk groups. Conclusion: Long-term consumption of a healthy dietary pattern improves MEF in patients with CHD, and this improvement is greater in patients in the low-risk category for cardiovascular recurrence compared with those in the medium and high-risk groups.
Adherence to oral preventive treatment (OPT) in migraine is often compromised. The aim was to determine the degree of adherence to OPT in migraine patients at three months.
We conducted a multicentre ...observational study of patients diagnosed with episodic or chronic migraine (criteria of the International Headache Classification, third edition) in whom OPT was initiated. Demographic data (age, gender, educational level, marital status) and disease data (number of attacks, Headache Impact Test-6 and Migraine Disability Assessment Scale scores) were collected. At three months, the Morisky-Green scale was administered, which differentiates levels of adherence: excellent (0), moderate (1-2) and low (3-4).
Altogether 100 patients participated in the study: 87% women aged 42 ± 13 years, 14% with chronic migraine; 53.2% of them were beginning their first OPT. Beta-blockers were initiated in 23.2%, tricyclic antidepressants in 35.4%, flunarizine in 21.2%, neuromodulators in 19.2% and antihypertensives in 1%. Severe disability was observed in 56%, and the impact was very severe in 79.5%. Adhesion at three months was excellent in 41.8%, moderate in 28.6% and low in 29.6%. The most frequent reason for discontinuing was the occurrence of adverse effects (44%). A significant relationship was found between excellent adherence and being single (p = 0.046), and between low adherence and adverse effects (p = 0.009). No significant differences were found between the OPT used and the degree of adherence or the other variables studied.
Although our results are better than those published in the literature, we consider that therapeutic adherence in our setting is low and educating our patients in this regard is a priority.
Advanced glycation end products (AGEs) and oxidative stress are elevated with aging and dysmetabolic conditions. Because a Mediterranean (Med) diet reduces oxidative stress, serum AGEs levels, and ...gene expression related to AGEs metabolism in healthy elderly people, we studied whether supplementation with coenzyme Q10 (CoQ) was of further benefit. Twenty participants aged ≥ 65 (10 men and 10 women) were randomly assigned to each of three isocaloric diets for successive periods of 4 weeks in a crossover design: Med diet, Med + CoQ, and a Western high-saturated-fat diet (SFA diet). After a 12-hour fast, volunteers consumed a breakfast with a fat composition similar to the previous diet period. Analyses included dietary AGEs consumed, serum AGEs and AGE receptor-1 (AGER1), receptor for AGEs (RAGE), glyoxalase I (GloxI), and estrogen receptor α (ERα) mRNA levels. Med diet modulated redox-state parameters, reducing AGEs levels and increasing AGER1 and GloxI mRNA levels compared with the SFA diet. This benefit was accentuated by adding CoQ, in particular, in the postprandial state. Because elevated oxidative stress/inflammation and AGEs are associated with clinical disease in aging, the enhanced protection of a Med diet supplemented with CoQ should be assessed in a larger clinical trial in which clinical conditions in aging are measured.
PDF
