Dietary Omega-3 Fatty Acids Promote Arrhythmogenic Remodeling of Cellular Ca2+ Handling in a Postinfarction Model of Sudden Cardiac Death
- Publication Date
- October 18, 2013
- Journal
- PLOS ONE
- Authors
- Andriy E. Belevych, Hsiang Ting Ho, Radmila Terentyeva, Ingrid M. Bonilla, et al
- Volume
- 8
- Issue
- 10
- Pages
- e78414
- DOI
- https://dx.plos.org/10.1371/journal.pone.0078414
- Publisher URL
- http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0078414
- PubMed
- http://www.ncbi.nlm.nih.gov/pubmed/24205228
- PubMed Central
- http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3799693
- Europe PMC
- http://europepmc.org/abstract/MED/24205228
- Web of Science
- 000326029300154
- Scopus
- 84885728407
- Mendeley
- http://www.mendeley.com/research/dietary-omega3-fatty-acids-promote-arrhythmogenic-remodeling-cellular-ca2-handling-postinfarction-mo
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Mendeley | Further Information
{"title"=>"Dietary Omega-3 Fatty Acids Promote Arrhythmogenic Remodeling of Cellular Ca2+ Handling in a Postinfarction Model of Sudden Cardiac Death", "type"=>"journal", "authors"=>[{"first_name"=>"Andriy E.", "last_name"=>"Belevych", "scopus_author_id"=>"6506917957"}, {"first_name"=>"Hsiang Ting", "last_name"=>"Ho", "scopus_author_id"=>"39161344100"}, {"first_name"=>"Radmila", "last_name"=>"Terentyeva", "scopus_author_id"=>"8836398900"}, {"first_name"=>"Ingrid M.", "last_name"=>"Bonilla", "scopus_author_id"=>"25921649300"}, {"first_name"=>"Dmitry", "last_name"=>"Terentyev", "scopus_author_id"=>"6602960184"}, {"first_name"=>"Cynthia A.", "last_name"=>"Carnes", "scopus_author_id"=>"6701801586"}, {"first_name"=>"Sandor", "last_name"=>"Gyorke", "scopus_author_id"=>"16156531200"}, {"first_name"=>"George E.", "last_name"=>"Billman", "scopus_author_id"=>"7006159942"}], "year"=>2013, "source"=>"PLoS ONE", "identifiers"=>{"pmid"=>"24205228", "sgr"=>"84885728407", "pui"=>"370052358", "scopus"=>"2-s2.0-84885728407", "issn"=>"19326203", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)", "doi"=>"10.1371/journal.pone.0078414"}, "id"=>"d11c5352-a213-3e0e-bd3f-ad7d6495704c", "abstract"=>"It has been proposed that dietary omega-3 polyunsaturated fatty acids (n-3 PUFAs) can reduce the risk of ventricular arrhythmias in post-MI patients. Abnormal Ca2+ handling has been implicated in the genesis of post-MI ventricular arrhythmias. Therefore, we tested the hypothesis that dietary n-3 PUFAs alter the vulnerability of ventricular myocytes to cellular arrhythmia by stabilizing intracellular Ca2+ cycling. To test this hypothesis, we used a canine model of post-MI ventricular fibrillation (VF) and assigned the animals to either placebo (1 g/day corn oil) or n-3 PUFAs (1-4 g/day) groups. Using Ca2+ imaging techniques, we examined the intracellular Ca2+ handling in myocytes isolated from post-MI hearts resistant (VF-) and susceptible (VF+) to VF. Frequency of occurrence of diastolic Ca2+ waves (DCWs) in VF+ myocytes from placebo group was significantly higher than in placebo-treated VF- myocytes. n-3 PUFA treatment did not decrease frequency of DCWs in VF+ myocytes. In contrast, VF- myocytes from the n-3 PUFA group had a significantly higher frequency of DCWs than myocytes from the placebo group. In addition, n-3 PUFA treatment increased beat-to-beat alterations in the amplitude of Ca2+ transients (Ca2+ alternans) in VF- myocytes. These n-3 PUFAs effects in VF- myocytes were associated with an increased Ca2+ spark frequency and reduced sarcoplasmic reticulum Ca2+ content, indicative of increased activity of ryanodine receptors. Thus, dietary n-3 PUFAs do not alleviate intracellular Ca2+ cycling remodeling in myocytes isolated from post-MI VF+ hearts. Furthermore, dietary n-3 PUFAs increase vulnerability of ventricular myocytes to cellular arrhythmia in post-MI VF- hearts by destabilizing intracellular Ca2+ handling. © 2013 Belevych et al.", "link"=>"http://www.mendeley.com/research/dietary-omega3-fatty-acids-promote-arrhythmogenic-remodeling-cellular-ca2-handling-postinfarction-mo", "reader_count"=>12, "reader_count_by_academic_status"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Librarian"=>1, "Researcher"=>2, "Student > Ph. D. Student"=>4, "Student > Master"=>3}, "reader_count_by_user_role"=>{"Unspecified"=>1, "Professor > Associate Professor"=>1, "Librarian"=>1, "Researcher"=>2, "Student > Ph. D. Student"=>4, "Student > Master"=>3}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Medicine and Dentistry"=>7, "Agricultural and Biological Sciences"=>1, "Design"=>1, "Veterinary Science and Veterinary Medicine"=>2}, "reader_count_by_subdiscipline"=>{"Design"=>{"Design"=>1}, "Medicine and Dentistry"=>{"Medicine and Dentistry"=>7}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>1}, "Unspecified"=>{"Unspecified"=>1}, "Veterinary Science and Veterinary Medicine"=>{"Veterinary Science and Veterinary Medicine"=>2}}, "reader_count_by_country"=>{"United Kingdom"=>1}, "group_count"=>1}CrossRef
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Scopus | Further Information
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Relative Metric
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