scholarly journals Omega-3 Fatty Acid-Derived Resolvin D2 Regulates Human Placental Vascular Smooth Muscle and Extravillous Trophoblast Activities

2019 ◽  
Vol 20 (18) ◽  
pp. 4402 ◽  
Author(s):  
Arzu Ulu ◽  
Prakash K. Sahoo ◽  
Ana G. Yuil-Valdes ◽  
Maheswari Mukherjee ◽  
Matthew Van Ormer ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Placental Tissue ◽  
Cell Types ◽  
Extravillous Trophoblast ◽  
Protective Effects ◽  
Omega 3 Fatty Acids ◽  
Omega 3

Omega-3 fatty acids are important to pregnancy and neonatal development and health. One mechanism by which omega-3 fatty acids exert their protective effects is through serving as substrates for the generation of specialized pro-resolving lipid mediators (SPM) that potently limit and resolve inflammatory processes. We recently identified that SPM levels are increased in maternal blood at delivery as compared to umbilical cord blood, suggesting the placenta as a potential site of action for maternal SPM. To explore this hypothesis, we obtained human placental samples and stained for the SPM resolvin D2 (RvD2) receptor GPR18 via immunohistochemistry. In so doing, we identified GPR18 expression in placental vascular smooth muscle and extravillous trophoblasts of the placental tissues. Using in vitro culturing, we confirmed expression of GPR18 in these cell types and further identified that stimulation with RvD2 led to significantly altered responsiveness (cytoskeletal changes and pro-inflammatory cytokine production) to lipopolysaccharide inflammatory stimulation in human umbilical artery smooth muscle cells and placental trophoblasts. Taken together, these findings establish a role for SPM actions in human placental tissue.

scholarly journals Omega-3 fatty acids ameliorate doxorubicin-induced cardiorenal toxicity: In-vivo regulation of oxidative stress, apoptosis and renal Nox4, and in-vitro preservation of the cytotoxic efficacy

PLoS ONE ◽  
2020 ◽  
Vol 15 (11) ◽  
pp. e0242175 ◽  
Author(s):  
Dalia Saleh ◽  
Marawan Abdelbaset ◽  
Azza Hassan ◽  
Ola Sharaf ◽  
Sawsan Mahmoud ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Fatty Acids ◽  
Cytotoxic Activity ◽  
Cell Line ◽  
Dependent Manner ◽  
Protective Effects ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Nadph Oxidase 4

This study examines the protective effects of omega‐3 fatty acids (OMG), a frequently used nutritional therapy in cancer patients, against doxorubicin (DOX)‐induced acute cardiorenal toxicity in rats, and evaluates the cytotoxic activity of DOX when used with OMG against breast cancer cell line. Five groups of rats were treated for 4 consecutive weeks with vehicle (groups I & II), or OMG (25, 50 or 100 mg/kg/day, po; groups III, IV & V, respectively). After twenty-four hours, the last four groups were injected with DOX (200 mg/kg, ip). In DOX-treated rats, the altered ECG, serum cardiac and renal function biomarkers, and histopathological features indicated the induction of cardiorenal toxicity. Increased oxidative and apoptotic markers in both organs was observed, with elevated renal contents of NADPH-oxidase-4 (Nox4) and renin. OMG pretreatment improved those DOX-induced impairments in a dose-dependent manner, and showed antioxidant and antiapoptotic effects with regulation of renal Nox4 expression. The in-vitro study showed preservation of the cytotoxic activity of DOX on MCF7 cell line in the presence of OMG. The data suggests OMG for protection against acute DOX‐induced cardiorenal damage without affecting the latter antitumor activity. It proposes regulation of oxidative stress, Nox4 activity and apoptosis as contributing protective mechanisms.

scholarly journals Omega-3 Fatty Acids Inhibit Thrombin Formation In Vascular Smooth Muscle Cells

2019 ◽  
Vol 287 ◽  
pp. e27-e28
Author(s):  
N.T. Skenteris ◽  
J. Pirault ◽  
M. Didelot ◽  
P. Lacolley ◽  
V. Regnault ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Muscle Cells ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Thrombin Formation

scholarly journals Dose-response effects of omega-3 on platelet aggregation: an observational study

2018 ◽  
Vol 46 (12) ◽  
pp. 5074-5082 ◽  
Author(s):  
Thomas Kander ◽  
Erik Lindblom ◽  
Ulf Schött
Keyword(s):  
Fatty Acids ◽  
Platelet Aggregation ◽  
Healthy Volunteers ◽  
Dose Response ◽  
High Dose ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Positive Health ◽  
Inhibiting Effect

Objective This study aimed to evaluate the dose-response effects of supplemental omega-3 fatty acids on platelet function in healthy volunteers. Methods Twelve healthy volunteers ingested a normal supplemental dose of 1260 mg omega-3 fatty acids daily for 5 days, followed by a high dose of 2520 mg daily for another 5 days. Multiple electrode aggregometry (MEA) with four different agonists was used to measure platelet aggregation before and after the normal- and high-dose regimes. In vitro spiking using physiological doses of omega-3 fatty acids was also performed to determine whether MEA is capable of detecting a platelet-inhibiting effect due to omega-3 fatty acids. Results There were no differences in platelet aggregation measured by the MEA assay in healthy volunteers after intake of either the normal or high dose of omega-3 fatty acids. In the in vitro experiment, a platelet-inhibiting effect of omega-3 fatty acids was shown by an arachidonic acid agonist in MEA . Conclusions Supplemental omega-3 fatty acids do not evoke their positive health effects through inhibition of platelet aggregation measurable with MEA.

Dietary omega 3 fatty acids and endothelium-dependent relaxations in porcine coronary arteries

1989 ◽  
Vol 256 (4) ◽  
pp. H968-H973 ◽  
Author(s):  
H. Shimokawa ◽  
P. M. Vanhoutte
Keyword(s):  
Fatty Acids ◽  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Polyunsaturated Fatty Acids ◽  
Eicosapentaenoic Acid ◽  
Coronary Arteries ◽  
Treated Group ◽  
Omega 3 ◽  
Relaxing Factor ◽  
Endothelium Derived Relaxing Factor

Dietary supplementation with cod-liver oil significantly augments endothelium-dependent relaxations in porcine coronary arteries. The present study was designed to examine the effect of dietary administration of omega 3 polyunsaturated fatty acids (mainly eicosapentaenoic acid, the major component of fish oil) on endothelium-dependent relaxations in porcine coronary arteries. Male Yorkshire pigs were maintained 4 wk on a regular diet with or without supplementation with purified eicosapentaenoic acid (3.5 g/day) and docosahexaenoic acid (1.5 g/day). Endothelium-dependent relaxations were examined in vitro. In rings from the treated group, endothelium-dependent relaxations were augmented in response to bradykinin, serotonin, and ADP, but not to the calcium ionophore A23187. These augmentations were not altered by indomethacin but were significantly inhibited by methylene blue, an inhibitor of guanylate cyclase. In the treated group, endothelium-dependent relaxations to aggregating platelets also were significantly augmented; platelet-induced contractions of quiescent rings were inhibited more by the presence of the endothelium than in arteries from the control group. Bioassay experiments demonstrated that the release of endothelium-derived relaxing factor(s) by bradykinin and relaxations of the vascular smooth muscle to the factor(s) were greater in arteries from the treated group. These observations indicate that dietary omega 3 polyunsaturated fatty acids augment receptor-operated endothelium-dependent relaxations, partly due to the augmented release of endothelium-derived relaxing factor(s) and partly due to the augmented relaxation of the vascular smooth muscle to the factor(s).

scholarly journals The Role of Micronutrients in Support of the Immune Response against Viral Infections

Nutrients ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 3198 ◽  
Author(s):  
Francesco Pecora ◽  
Federica Persico ◽  
Alberto Argentiero ◽  
Cosimo Neglia ◽  
Susanna Esposito
Keyword(s):  
Fatty Acids ◽  
Immune Response ◽  
Immune System ◽  
Viral Infections ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Optimal Function ◽  
The Impact

Viral infections are a leading cause of morbidity and mortality worldwide, and the importance of public health practices including handwashing and vaccinations in reducing their spread is well established. Furthermore, it is well known that proper nutrition can help support optimal immune function, reducing the impact of infections. Several vitamins and trace elements play an important role in supporting the cells of the immune system, thus increasing the resistance to infections. Other nutrients, such as omega-3 fatty acids, help sustain optimal function of the immune system. The main aim of this manuscript is to discuss of the potential role of micronutrients supplementation in supporting immunity, particularly against respiratory virus infections. Literature analysis showed that in vitro and observational studies, and clinical trials, highlight the important role of vitamins A, C, and D, omega-3 fatty acids, and zinc in modulating the immune response. Supplementation with vitamins, omega 3 fatty acids and zinc appears to be a safe and low-cost way to support optimal function of the immune system, with the potential to reduce the risk and consequences of infection, including viral respiratory infections. Supplementation should be in addition to a healthy diet and fall within recommended upper safety limits set by scientific expert bodies. Therefore, implementing an optimal nutrition, with micronutrients and omega-3 fatty acids supplementation, might be a cost-effective, underestimated strategy to help reduce the burden of infectious diseases worldwide, including coronavirus disease 2019 (COVID-19).

scholarly journals Omega-3 Fatty Acids Survey in Men under Active Surveillance for Prostate Cancer: from Intake to Prostate Tissue Level

Nutrients ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1616 ◽  
Author(s):  
Hanane Moussa ◽  
Molière Nguile-Makao ◽  
Karine Robitaille ◽  
Marie-Hélène Guertin ◽  
Janie Allaire ◽  
...  
Keyword(s):  
Prostate Cancer ◽  
Fatty Acids ◽  
Active Surveillance ◽  
Experimental Studies ◽  
Low Risk ◽  
Prostate Tissue ◽  
High Grade ◽  
Protective Effects ◽  
Omega 3 Fatty Acids ◽  
Omega 3

Dietary omega-3 fatty acids (ω3), particularly long-chain ω3 (LCω3), have protective effects against prostate cancer (PCa) in experimental studies. Observational studies are conflicting, possibly because of the biomarker used. This study aimed at evaluating associations between grade reclassification and ω3 levels assessed in prostatic tissue, red blood cells (RBC), and diet. We conducted a validation cross-sectional study nested within a phase II clinical trial. We identified 157 men diagnosed with low-risk PCa who underwent a first active surveillance repeat prostate biopsy session. Fatty acid (FA) intake was assessed using a food frequency questionnaire and their levels measured in prostate tissue and RBC. Associations were evaluated using logistic regression. At first repeat biopsy session, 39 (25%) men had high-grade PCa (grade group ≥2). We found that high LCω3-eicosapentaenoic acid (EPA) level in prostate tissue (odds ratio (OR) 0.25; 95% (confidence interval (CI) 0.08–0.79; p-trend = 0.03) was associated with lower odds of high-grade PCa. Similar results were observed for LCω3 dietary intake (OR 0.30; 95% CI 0.11-0.83; p-trend = 0.02) but no association for RBC. LCω3-EPA levels in the target prostate tissue are inversely associated with high-grade PCa in men with low-risk PCa, supporting that prostate tissue FA, but not RBC FA, is a reliable biomarker of PCa risk.

Uterine decidual niche modulates the progressive dedifferentiation of spiral artery vascular smooth muscle cells during human pregnancy†

2020 ◽  
Author(s):  
Yeling Ma ◽  
Xin Yu ◽  
Lanmei Zhang ◽  
Juan Liu ◽  
Xuan Shao ◽  
...  
Keyword(s):  
Smooth Muscle ◽  
Vascular Smooth Muscle ◽  
Smooth Muscle Cells ◽  
Vascular Smooth Muscle Cells ◽  
Vascular Remodeling ◽  
Dynamic Change ◽  
Muscle Cells ◽  
Extravillous Trophoblast ◽  
Spiral Artery

Abstract Uterine spiral artery (SPA) remodeling is a crucial event during pregnancy to provide enough blood supply to maternal–fetal interface and meet the demands of the growing fetus. Along this process, the dynamic change and the fate of spiral artery vascular smooth muscle cells (SPA–VSMCs) have long been debatable. In the present study, we analyzed the cell features of SPA–VSMCs at different stages of vascular remodeling in human early pregnancy, and we demonstrated the progressively morphological change of SPA–VSMCs at un-remodeled (Un-Rem), remodeling, and fully remodeled (Fully-Rem) stages, indicating the extravillous trophoblast (EVT)-independent and EVT-dependent phases of SPA–VSMC dedifferentiation. In vitro experiments in VSMC cell line revealed the efficient roles of decidual stromal cells, decidual natural killer cells (dNK), decidual macrophages, and EVTs in inducing VSMCs dedifferentiation. Importantly, the potential transformation of VSMC toward CD56+ dNKs was displayed by immunofluorescence-DNA in-situ hybridization-proximity ligation and chromatin immunoprecipitation assays for H3K4dime modification in the myosin heavy chain 11 (MYH11) promoter region. The findings clearly illustrate a cascade regulation of the progressive dedifferentiation of SPA–VSMCs by multiple cell types in uterine decidual niche and provide new evidences to reveal the destination of SPA–VSMCs during vascular remodeling.

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