scholarly journals Modulation of Systemic and Aortic Nitric Oxide by Melatonin and n-3 Polyunsaturated Fatty Acids in Isoproterenol Affected Spontaneously Hypertensive and Normotensive Wistar Rats

2016 ◽  
pp. S109-S118 ◽  
Author(s):  
K. K. CHAUDAGAR ◽  
C. VICZENCZOVA ◽  
B. SZEIFFOVA BACOVA ◽  
T. EGAN BENOVA ◽  
M. BARANCIK ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Wistar Rats ◽  
Dependent Manner ◽  
Pufa Supplementation ◽  
Pufa Intake ◽  
Spontaneously Hypertensive ◽  
No Release ◽  
Strain Dependent

We aimed to explore the effects of melatonin and n-3 polyunsaturated fatty acids (PUFA) supplementation on plasma and aortic nitric oxide (NO) levels in isoproterenol (Iso) affected spontaneously hypertensive (SHR) and Wistar rats. Untreated control rats were compared with Iso injected (118 mg/kg, s.c.) rats, and Iso injected plus supplemented with melatonin (10 mg/kg, p.o.) or PUFA (1.68 g/kg, p.o.) for two months. Plasma and aortic basal, L-NAME inhibited, adrenaline and acetylcholine stimulated NO were determined using Griess method. Plasma NO levels were lower in SHR versus Wistar rats. Iso decreased NO in Wistar while not in SHR. PUFA but not melatonin intake of Iso treated SHR increased plasma NO along with a decrease in systolic blood pressure. Basal aortic NO level was higher in SHR than Wistar rats and not altered by Iso. Intake of melatonin increased but PUFA decreased basal NO levels in Wistar+Iso and did not affect in SHR+Iso rats. Acetylcholine and adrenaline induced aortic NO release was significantly increased in Wistar+Iso but not SHR+Iso group. Melatonin intake increased Ach induced aortic NO in Wistar+Iso and SHR+Iso groups, whereas there was no effect of PUFA intake. Findings suggest that PUFA modulates plasma and melatonin aortic NO levels of isoproterenol affected rats in a strain-dependent manner.

scholarly journals Aged male and female spontaneously hypertensive rats benefit from n-3 polyunsaturated fatty acids supplementation

2008 ◽  
pp. S39-S48
Author(s):  
M Mitašíková ◽  
S Šmidová ◽  
A Macsaliová ◽  
V Knezl ◽  
K Dlugošová ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Connexin 43 ◽  
Spontaneously Hypertensive Rats ◽  
Cell Junctions ◽  
Hypertensive Rats ◽  
Pufa Supplementation ◽  
Male And Female ◽  
Spontaneously Hypertensive ◽  
Gap Junction Channel

Hypertension-induced myocardial metabolic, structural and electrophysiological remodeling deteriorates with aging and contributes to both heart failure and occurrence of malignant arrhythmias. It has been shown in clinical trials that n-3 polyunsaturated fatty acids (n-3 PUFA) reduce the incidence of cardiovascular diseases and sudden cardiac death. We investigated the cardioprotective effects of n-3 PUFA in aged spontaneously hypertensive rats (SHR) and possible cellular mechanisms involved. Male and female 14-moth-old SHR were fed with n-3 PUFA (Vesteralens, Norway, 20 mg/day for two months) and compared with untreated SHR. Results showed that n-3 PUFA supplementation led to 1) significant decline of blood pressure; 2) suppression of inducible ventricular fibrillation (VF) by 57 % (male) and 67 % (female), although the arrhythmogenic substrates, like fibrosis, hypertrophy and abnormal gap junctions distribution were not eliminated; 3) preservation of the cardiomyocytes and the integrity of their junctions; 4) enhancement of energetic metabolism enzyme activity; 5) augmentation of capillary density associated with increased alkaline phosphatase and decreased dipeptidyl peptidase-4 (DPP4) activity and 6/ increase in gap junction channel connexin-43 expression. Thus, aged male as well as female SHR benefit from n-3 PUFA supplementation that results in decrease in VF susceptibility, partly due to an improvement of myocardial metabolic state, cardiomyocyte and cell-to-cell junctions integrity and Cx43 up-regulation.

scholarly journals Lower Omega-3 Index Is a Marker of Increased Propensity of Hypertensive Rat Heart to Malignant Arrhythmias

2013 ◽  
pp. S201-S208 ◽  
Author(s):  
B. BAČOVÁ ◽  
P. SEČ ◽  
J. RADOŠINSKÁ ◽  
M. ČERTÍK ◽  
A. VACHULOVÁ ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Rat Heart ◽  
Wistar Rats ◽  
Omega 3 Fatty Acids ◽  
Omega 3 ◽  
Pufa Intake ◽  
Spontaneously Hypertensive ◽  
Hypertensive Rat ◽  
Total Fatty Acids ◽  
Malignant Arrhythmias

Polyunsaturated omega-3 fatty acids (ω-3 PUFA) are important components of cell membrane affecting its function and their deficiency is deleterious to health. We have previously shown that spontaneously hypertensive rats (SHR) are prone to lifethreatening arrhythmias that are reduced by ω-3 PUFA intake. Purpose of this study was to explore plasma and red blood cells (RBC) profile of ω-3 and ω-6 PUFA as well as to determine ω-3 index, a risk factor for sudden cardiac death, in aged SHR and the effect of ω-3 PUFA intake. Male and female 12-month-old SHR and age-matched Wistar rats fed with ω-3 PUFA (200 mg/kg BW/day/2 month) were compared with untreated rats. Composition of ω-3 PUFA: alfa linolenic acid, eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) as well as ω-6 PUFA: linoleic acid and arachidonic acid was analyzed by gas chromatography. Results showed sex- and strain-related differences of basal ω-3 and ω-6 PUFA levels in plasma and RBC as well as in response to ω-3 PUFA intake. Comparing to Wistar rats ω-3 index, expressed as a percentage of EPA+DHA of total fatty acids, was lower in SHR and it increased due to consumption of ω-3 PUFA. Findings support our hypothesis that lower ω-3 index may be also a marker of increased propensity of the hypertensive rat heart to malignant arrhythmias.

scholarly journals Intake of Fish and Marine n-3 Polyunsaturated Fatty Acids and Risk of Cardiovascular Disease Mortality: A Meta-Analysis of Prospective Cohort Studies

Nutrients ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 2342
Author(s):  
Lan Jiang ◽  
Jinyu Wang ◽  
Ke Xiong ◽  
Lei Xu ◽  
Bo Zhang ◽  
...  
Keyword(s):  
Cardiovascular Disease ◽  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Cohort Studies ◽  
Mortality Risk ◽  
Prospective Cohort ◽  
Meta Analysis ◽  
Pufa Intake ◽  
Prospective Cohort Studies ◽  
Cvd Mortality

Previous epidemiological studies have investigated the association of fish and marine n-3 polyunsaturated fatty acids (n-3 PUFA) consumption with cardiovascular disease (CVD) mortality risk. However, the results were inconsistent. The purpose of this meta-analysis is to quantitatively evaluate the association between marine n-3 PUFA, fish and CVD mortality risk with prospective cohort studies. A systematic search was performed on PubMed, Web of Science, Embase and MEDLINE databases from the establishment of the database to May 2021. A total of 25 cohort studies were included with 2,027,512 participants and 103,734 CVD deaths. The results indicated that the fish consumption was inversely associated with the CVD mortality risk [relevant risk (RR) = 0.91; 95% confidence intervals (CI) 0.85−0.98]. The higher marine n-3 PUFA intake was associated with the reduced risk of CVD mortality (RR = 0.87; 95% CI: 0.85–0.89). Dose-response analysis suggested that the risk of CVD mortality was decreased by 4% with an increase of 20 g of fish intake (RR = 0.96; 95% CI: 0.94–0.99) or 80 milligrams of marine n-3 PUFA intake (RR = 0.96; 95% CI: 0.94–0.98) per day. The current work provides evidence that the intake of fish and marine n-3 PUFA are inversely associated with the risk of CVD mortality.

scholarly journals Role of n-3 Polyunsaturated Fatty Acids and Exercise in Breast Cancer Prevention: Identifying Common Targets

2016 ◽  
Vol 9 ◽  
pp. NMI.S39043 ◽  
Author(s):  
Salma A. Abdelmagid ◽  
Jessica L. MacKinnon ◽  
Sarah M. Janssen ◽  
David W.L. Ma
Keyword(s):  
Breast Cancer ◽  
Fatty Acids ◽  
Polyunsaturated Fatty Acids ◽  
Cancer Prevention ◽  
Breast Cancer Prevention ◽  
Future Research ◽  
Pufa Intake ◽  
Diet And Exercise ◽  
Important Study

Diet and exercise are recognized as important lifestyle factors that significantly influence breast cancer risk. In particular, dietary n-3 polyunsaturated fatty acids (PUFAs) have been shown to play an important role in breast cancer prevention. Growing evidence also demonstrates a role for exercise in cancer and chronic disease prevention. However, the potential synergistic effect of n-3 PUFA intake and exercise is yet to be determined. This review explores targets for breast cancer prevention that are common between n-3 PUFA intake and exercise and that may be important study outcomes for future research investigating the combined effect of n-3 PUFA intake and exercise. These lines of evidence highlight potential new avenues for research and strategies for breast cancer prevention.

scholarly journals Host/Malassezia Interaction: A Quantitative, Non-Invasive Method Profiling Oxylipin Production Associates Human Skin Eicosanoids with Malassezia

Metabolites ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 700
Author(s):  
Yohannes Abere Ambaw ◽  
Martin P. Pagac ◽  
Antony S. Irudayaswamy ◽  
Manfred Raida ◽  
Anne K. Bendt ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Immune System ◽  
Polyunsaturated Fatty Acids ◽  
Human Skin ◽  
Skin Surface ◽  
Lipid Mediators ◽  
Dependent Manner ◽  
Human Immune System ◽  
Plant Host

Malassezia are common components of human skin, and as the dominant human skin eukaryotic microbe, they take part in complex microbe–host interactions. Other phylogenetically related fungi (including within Ustilagomycotina) communicate with their plant host through bioactive oxygenated polyunsaturated fatty acids, generally known as oxylipins, by regulating the plant immune system to increase their virulence. Oxylipins are similar in structure and function to human eicosanoids, which modulate the human immune system. This study reports the development of a highly sensitive mass-spectrometry-based method to capture and quantify bioactive oxygenated polyunsaturated fatty acids from the human skin surface and in vitro Malassezia cultures. It confirms that Malassezia are capable of synthesizing eicosanoid-like lipid mediators in vitro in a species dependent manner, many of which are found on human skin. This method enables sensitive identification and quantification of bioactive lipid mediators from human skin that may be derived from metabolic pathways shared between skin and its microbial residents. This enables better cross-disciplinary and detailed studies to dissect the interaction between Malassezia and human skin, and to identify potential intervention points to promote or abrogate inflammation and to improve human skin health.

scholarly journals Polyunsaturated fatty acids in the treatment of attention deficit hyperactivity disorder

2014 ◽  
Vol 4 (6) ◽  
pp. 245 ◽  
Author(s):  
Klaus W. Lange ◽  
Joachim Hauser ◽  
Shigehiko Kanaya ◽  
Ivo Kaunzinger ◽  
Katharina M Lange ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Attention Deficit Hyperactivity Disorder ◽  
Polyunsaturated Fatty Acids ◽  
Attention Deficit ◽  
Adhd Symptoms ◽  
Omega 3 ◽  
Dietary Pufa ◽  
Blood Concentrations ◽  
Pufa Supplementation ◽  
Hyperactivity Disorder

Background: Attention deficit/hyperactivity disorder (ADHD) is one of the most common behavioral disorders in children. Insufficient dietary intake of long-chain polyunsaturated fatty acids (LC-PUFAs) has been suggested to have an impact on the development of symptoms of ADHD in children. Individuals with ADHD have been demonstrated to have significantly reduced blood concentrations of PUFAs and, in particular, reduced levels of omega-3 (n-3) PUFAs. These findings suggest that PUFA supplementation may reduce the attention and behavior problems associated with ADHD.Objective: To provide an overview of the efficacy of dietary LC-PUFA supplementation in the treatment of ADHD. Methods: Literature published up until December 2013 on the effects of n-3 PUFA supplementation on ADHD symptoms was obtained using a PubMed search and critically reviewed.Results: Dietary PUFA supplementation appears to have beneficial effects on ADHD symptoms although these effects are small. The clinical relevance of these observations remains to be determined.Conclusion: There is only limited support for the efficacy of PUFA supplementation for the core symptoms of ADHD. Given the small effect sizes regarding PUFA supplementation, it may not be a sufficient therapy for a majority of patients with ADHD.Keywords: diet, nutrition, polyunsaturated fatty acid, PUFA, attention deficit/hyperactivity disorder, ADHD

scholarly journals Supplementation with polyunsaturated fatty acids (PUFAs) in the management of attention deficit hyperactivity disorder (ADHD)

2018 ◽  
Vol 24 (4) ◽  
pp. 279-284 ◽  
Author(s):  
Tobias Banaschewski ◽  
Brendan Belsham ◽  
Michael H Bloch ◽  
Maite Ferrin ◽  
Mats Johnson ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Attention Deficit Hyperactivity Disorder ◽  
Polyunsaturated Fatty Acids ◽  
Attention Deficit ◽  
Psychosocial Interventions ◽  
Evidence Base ◽  
Current Evidence ◽  
High Quality Research ◽  
Pufa Supplementation ◽  
Hyperactivity Disorder

While pharmacotherapy and psychosocial interventions are recommended as the primary frontline treatment for attention deficit hyperactivity disorder (ADHD), alternative approaches to managing ADHD are becoming increasingly popular among patients and their families. Supplementation with polyunsaturated fatty acids (PUFAs) is an example of this. PUFA supplementation is not recommended by guidelines for managing ADHD; however, patients may still decide to use it. To provide direction to healthcare professionals (HCPs) managing ADHD, eight international experts in the field of adult and child ADHD came together for the Continuum Education Board: Omega Supplements in ADHD meeting. This commentary summarises the panel's consensus that current evidence suggests PUFA supplementation has a small beneficial effect on behaviour in children with ADHD, and that further high-quality research is needed to clearly evaluate and define its role in the management of ADHD of children, adolescents and adults. The panel concluded that in cases where patients use PUFA supplementation, HCPs should be comfortable explaining the potential gains that they may have and their possible side effects. The panel also concluded HCPs should not reinforce the idea that PUFA supplementation should replace treatment approaches with a more robust evidence base for managing ADHD.

THE RELATIONSHIP OF OMEGA 3 POLYUNSATURATED FATTY ACIDS IN RED BLOOD CELL MEMBRANES WITH COGNITIVE FUNCTION AND BRAIN STRUCTURE: A REVIEW FOCUSSED ON ALZHEIMER’S DISEASE

2017 ◽  
pp. 1-7
Author(s):  
C. Hooper ◽  
P. De Souto Barreto ◽  
M. Pahor ◽  
M. Weiner ◽  
B. Vellas
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Fatty Acids ◽  
Cognitive Function ◽  
Blood Cell ◽  
Polyunsaturated Fatty Acids ◽  
Red Blood Cell ◽  
Omega 3 ◽  
Research Attention ◽  
Pufa Supplementation

Significant research attention has focussed on the identification of nutraceutical agents for the prevention of cognitive decline as a natural means of cognitive preservation in the elderly. There is some evidence for a reduction of brain omega 3 polyunsaturated fatty acids (n-3 PUFAs) in normal aging and in Alzheimer’s disease. n-3 PUFAs exhibit anti-inflammatory and anti-amyloidogenic properties as well as being able to reduce tau phosphorylation. Many observational studies have demonstrated a link between n-3 PUFAs and cognitive aging, and some, but not all, randomized controlled trials have demonstrated a benefit of n-3 PUFA supplementation on cognition, particularly in those subjects with mild cognitive impairment. The identification of a biomarker that reflects n-3 PUFA intake over time and consequent tissue levels is required. In this narrative review we discuss the evidence associating red blood cell membrane n-3 PUFAs with cognitive function and structural brain changes associated with Alzheimer’s disease. Key words: Docosahexaenoic acid, omega 3 polyunsaturated fatty aci

Sign in / Sign up

Export Citation Format

Share Document