Extra Virgin Olive Oil consumption from Mild Cognitive Impairment patients attenuates oxidative and nitrative stress reflecting on the reduction of the PARP levels and DNA damage

2021 ◽  
pp. 111621
Author(s):  
Elena E. Tzekaki ◽  
Magda Tsolaki ◽  
George D. Geromichalos ◽  
Αnastasia A. Pantazaki
2020 ◽  
Vol 78 (2) ◽  
pp. 801-817 ◽  
Author(s):  
Magda Tsolaki ◽  
Eftychia Lazarou ◽  
Mahi Kozori ◽  
Niki Petridou ◽  
Irene Tabakis ◽  
...  

Background: Extra virgin olive oil (EVOO) constitutes a natural compound with high protection over cognitive function. Objective: To investigate for the first time the effect of Greek High Phenolic Early Harvest Extra Virgin Olive Oil (HP-EH-EVOO) versus Moderate Phenolic (MP-EVOO) and Mediterranean Diet (MeDi) in people with mild cognitive impairment (MCI). Methods: We conducted a randomized prospective study so as to examine the HP-EH-EVOO and MP-EVOO versus MeDi in MCI. Genetic predisposition (APOE ɛ4) to Alzheimer’s disease (AD) was tested and an extensive neuropsychological battery was administered at baseline and after 12 months. Each participant was randomized and assigned one of three groups: 1) Group 1 received the HP-EH-EVOO (50 mL/day); 2) Group 2 received the MP-EVOO (50 mL/day), and 3) Group 3 received only the MeDi instructions. Results: Better follow-up performance was found in Group 1 compared to Group 2 and Group 3 in the almost all cognitive domains. Moreover, Group 2 showed also significant improvement compared to Group 3 in ADAS-cog (p = 0.001) and MMSE (p = 0.05), whereas Group 3 exhibited worse or similar to baseline performance in almost all domains. In particular, Group 1 and Group 2 had better outcomes with regards to ADAS-cog (p = 0.003), Digit Span (p = 0.006), and Letter fluency (p = 0.003). Moreover, there was a significant difference (p = 0.001) in the presence of APOE ɛ4 between the Groups 1 and 2 versus Group 3. Conclusion: Long-term intervention with HP-EH-EVOO or MP-EVOO was associated with significant improvement in cognitive function compared to MeDi, independent of the presence of APOE ɛ4.


2020 ◽  
Vol 78 (11) ◽  
pp. 952-968 ◽  
Author(s):  
João Tomé-Carneiro ◽  
María Carmen Crespo ◽  
María Carmen López de las Hazas ◽  
Francesco Visioli ◽  
Alberto Dávalos

Abstract Consumption of highly processed foods, such as those high in trans fats and free sugars, coupled with sedentarism and chronic stress increases the risk of obesity and cardiometabolic disorders, while adherence to a Mediterranean diet is inversely associated with the prevalence of such diseases. Olive oil is the main source of fat in the Mediterranean diet. Data accumulated thus far show consumption of extra virgin, (poly)phenol-rich olive oil to be associated with specific health benefits. Of note, recommendations for consumption based on health claims refer to the phenolic content of extra virgin olive oil as beneficial. However, even though foods rich in monounsaturated fatty acids, such as olive oil, are healthier than foods rich in saturated and trans fats, their inordinate use can lead to adverse effects on health. The aim of this review was to summarize the data on olive oil consumption worldwide and to critically examine the literature on the potential adverse effects of olive oil and its main components, particularly any effects on lipid metabolism. As demonstrated by substantial evidence, extra virgin olive oil is healthful and should be preferentially used within the context of a balanced diet, but excessive consumption may lead to adverse consequences.


2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Joaquín G. Cordero ◽  
Ramón García-Escudero ◽  
Jesús Avila ◽  
Ricardo Gargini ◽  
Vega García-Escudero

Alzheimer’s disease is a proteinopathy characterized by accumulation of hyperphosphorylated Tau and β-amyloid. Autophagy is a physiological process by which aggregated proteins and damaged organelles are eliminated through lysosomal digestion. Autophagy deficiency has been demonstrated in Alzheimer’s patients impairing effective elimination of aggregates and damaged mitochondria, leading to their accumulation, increasing their toxicity and oxidative stress. In the present study, we demonstrated by microarray analysis the downregulation of fundamental autophagy and mitophagy pathways in Alzheimer’s patients. The benefits of the Mediterranean diet on Alzheimer’s disease and cognitive impairment are well known, attributing this effect to several polyphenols, such as oleuropein aglycone (OLE), present in extra virgin olive oil. OLE is able to induce autophagy, achieving a decrease of aggregated proteins and a reduction of cognitive impairment in vivo. This effect is caused by the modulation of several pathways including the AMPK/mTOR axis and the activation of autophagy gene expression mediated by sirtuins and histone acetylation or EB transcription factor. We propose that supplementation of diet with extra virgin olive oil might have potential benefits for Alzheimer’s patients by the induction of autophagy by OLE.


Foods ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1428 ◽  
Author(s):  
Giuseppe Di Vita ◽  
Alfio Strano ◽  
Giulia Maesano ◽  
Giovanni La Via ◽  
Mario D’Amico

This study examined whether health cues influence the choices of olive oil consumers with different degrees of knowledge about the nutritional properties of olive oil. To this end, a direct survey on the consumption of healthy extra-virgin olive oil was implemented by examining the stated preferences of a sample of consumers. Two econometric analyses were carried out to identify the drivers of the consumption of olive oil with high polyphenol content. The logistic model was chosen as the most suitable method to answer the research questions. The results revealed a general consensus among consumers regarding the beneficial properties of olive oil consumption. Moreover, the findings show that different degrees of individual knowledge act as distinctive drivers in influencing the health perception of olive oil consumers. Finally, this study verified that, even for healthy foods, consumers’ choices are strongly dependent on their own self-coherence. As a consequence, consumers’ knowledge or beliefs that orientate their attitudes are influenced by different motivations and attributes.


Nutrients ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 918 ◽  
Author(s):  
Alma Rus ◽  
Francisco Molina ◽  
María Josefa Martínez-Ramírez ◽  
María Encarnación Aguilar-Ferrándiz ◽  
Ramón Carmona ◽  
...  

We have recently reported that patients with fibromyalgia (FM) may be at increased risk for cardiovascular disease. Olive oil reportedly has cardioprotective effects. We examined the influence of olive oil consumption on cardiovascular risk factors in FM. This preliminary study was performed on blood samples of women with FM who consumed 50 mL of organic olive oil daily for 3 weeks. Patients were randomized into two groups: 15 women ingested extra virgin olive oil (EVOO) and 15 refined olive oil (ROO). Cardiovascular risk markers were measured at baseline (pre measure) and after consumption of olive oil (post measure). Red blood cell count and erythrocyte sedimentation rate (ESR; both p < 0.05) declined significantly post-treatment in the EVOO group. Consumption of ROO increased mean platelet volume and reduced platelet distribution width (PDW), neutrophil-to-lymphocyte ratio, ESR and fibrinogen (all p < 0.05). Significant differences were found in pre–post change between the EVOO and ROO groups for cortisol and PDW (both p < 0.05). Our results have shown that consumption of olive oil may have antithrombotic and antiinflammatory properties in patients with FM, thereby improving a number of cardiovascular risk markers. Both EVOO and ROO may be useful as adjuvants for the prevention and/or treatment of cardiovascular disorders in these patients.


2015 ◽  
Vol 6 (9) ◽  
pp. 3098-3108 ◽  
Author(s):  
Imen Ghorbel ◽  
Mouna Khemakhem ◽  
Ons Boudawara ◽  
Rim Marrekchi ◽  
Kamel Jamoussi ◽  
...  

Oxidative stress generated by an excessive production of free radicals has been linked to the development of several health problems such as cardiovascular diseases.


2016 ◽  
Vol 23 (19) ◽  
pp. 19397-19408 ◽  
Author(s):  
Imen Ghorbel ◽  
Mariem Chaâbane ◽  
Ons Boudawara ◽  
Naziha Grati Kamoun ◽  
Tahia Boudawara ◽  
...  

Author(s):  
Fereshteh Dehghani ◽  
Mojgan Morvaridzadeh ◽  
Ana Beatriz Pizarro ◽  
Tohid Rouzitalab ◽  
Masoud Khorshidi ◽  
...  

2016 ◽  
Vol 67 (4) ◽  
pp. 159 ◽  
Author(s):  
C. E. Storniolo ◽  
J. J. Moreno

The mediterranean diet (MD) reduced the risk of colorectal cancer (CRC), and olive oil, the primary source of fat in the MD, has also been found to have a protective effect. However, animals fed with oleic acid present a high number of intestinal tumours, suggesting that oleic acid and olive oil consumption can exert different effects on CRC. Considering that extra virgin olive oil (EVOO) is a complex mix of fatty acids and minor compounds such as polyphenols, hydrocarbons, phytosterols and triterpenes; and that these compounds have antioxidant activity and consequently they can modulate the arachidonic acid (AA) cascade and eicosanoid synthesis. This review analyzes the state of the art of olive oil components on the AA cascade and cellular mechanism involved in CRC such as intestinal epithelial cell growth/apoptosis, to understand the fact that the consumption of seed oils with high oleic content or EVOO will probably have different effects on CRC development.


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