Omega-3s may lower hypertension mortalityAssociation between dietary intake of omega-3 polyunsaturated fatty acids and all-cause and cardiovascular mortality among hypertensive adults: Results from NHANES 1999-2018.
We explored the link between dietary omega-3 polyunsaturated fatty acids (N3-PUFA) and mortality in hypertensive adults through a thorough study involving over 26,000 participants from NHANES data spanning nearly two decades.
Our findings revealed that higher N3-PUFA intake, particularly from alpha-linolenic acid (ALA), eicosapentaenoic acid (EPA), and docosapentaenoic acid (DPA), was associated with a lower risk of both overall and cardiovascular mortality.
This suggests that incorporating more omega-3 rich foods into the diet could be a valuable strategy for reducing health risks in those living with hypertension.
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Resolvin E1 reduces hypertension effectsResolvin E1/ChemR23 Protects Against Hypertension and Vascular Remodeling in Angiotensin II-Induced Hypertensive Mice.
We explored the effects of Resolvin E1 (RvE1) in mice with hypertension induced by angiotensin II. By injecting RvE1, we observed significant reductions in blood pressure and improvements in vascular health, including decreased fibrosis and cell growth in blood vessels.
Importantly, the positive effects of RvE1 depended on the ChemR23 receptor—when this receptor was knocked down, the benefits were lost. Our findings suggest that targeting RvE1/ChemR23 could offer promising new ways to treat hypertension.
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Eicosapentaenoic acid benefits hypertension5,6-diHETE lactone (EPA-L) mediates hypertensive microvascular dilation by activating the endothelial GPR-PLC-IP signaling pathway.
We investigated the impact of eicosapentaenoic acid (EPA) on hypertension, a condition characterized by elevated blood pressure that can lead to serious health issues. The study focused on a special compound called 5,6-diHETE lactone (EPA-L), derived from EPA, which we observed to promote better blood vessel function. This compound was tested on hypertensive rats and showed a significant reduction in blood pressure.
Interestingly, we found that the way EPA-L works isn’t through increasing levels of nitric oxide like some may expect. Instead, we discovered that it triggers a unique signaling pathway involving G-protein-coupled receptors. This pathway activates key cellular processes in the endothelial cells lining our blood vessels, allowing them to relax and dilate, thereby contributing to lower blood pressure. In vitro experiments on human endothelial cells confirmed these findings, providing further evidence for the effectiveness of EPA-L.
Overall, our research positions EPA-L as a promising metabolite from eicosapentaenoic acid, demonstrating potential benefits in managing hypertension and promoting vascular health.
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Exercise aids hypertension-related BBB issuesHypertension depresses but exercise training restores both Mfsd2a expression and blood-brain barrier function within PVN capillaries.
We investigated how hypertension affects the blood-brain barrier (BBB) and whether exercise training could improve its function. Our study involved spontaneously hypertensive rats (SHR) and Wistar rats, which we divided into groups that either underwent treadmill training or remained sedentary for four weeks. We found that hypertension led to an increase in blood pressure and heart rate, as well as a decrease in the protective Mfsd2a protein, which plays a crucial role in maintaining BBB integrity.
Interestingly, when the hypertensive rats participated in exercise training, we noticed a restoration of Mfsd2a levels, a reduction in another protein called caveolin-1, and importantly, a normalization of BBB permeability in the paraventricular nucleus of the hypothalamus. This change was also accompanied by improvements in heart rate and blood pressure variability, indicating enhanced autonomic control.
However, we saw no significant changes in the Wistar group between training and sedentary states, suggesting that the exercise's effects were specific to the hypertensive condition. This highlights that while docosahexaenoic acid (DHA) transport through Mfsd2a is beneficial, the direct impact of DHA alone on hypertension wasn't the focus of our study.
Ultimately, we concluded that exercise training is an effective way to improve both the BBB function and autonomic regulation in hypertensive individuals. It emphasizes the potential therapeutic benefits of lifestyle interventions, like regular exercise, in managing hypertension-related complications.
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Resolvin D2 aids hypertension preventionResolvin D2 prevents vascular remodeling, hypercontractility and endothelial dysfunction in obese hypertensive mice through modulation of vascular and proinflammatory factors.
We investigated whether resolvin D2 (RvD2) could prevent vascular damage caused by obesity and hypertension. In mice exposed to a high-fat diet and angiotensin II, RvD2 administration showed promise in reducing obesity-related inflammation and vascular remodeling.
While RvD2 helped improve endothelial function and reduce inflammatory markers, the study didn’t indicate a complete reversal of hypertension.
Our findings suggest RvD2 might be a protective agent against vascular damage linked to hypertension, primarily affecting immune and vascular cells.
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