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https://www.readbyqxmd.com/read/28640847/heart-rate-lowering-treatment-leads-to-a-reduction-in-vulnerable-plaque-features-in-atherosclerotic-rabbits
#1
Raf H M van Hoof, Evelien Hermeling, Judith C Sluimer, Julie Salzmann, Arnold P G Hoeks, Jérôme Roussel, Mat J A P Daemen, Harry Struijker-Boudier, Joachim E Wildberger, Sylvia Heeneman, M Eline Kooi
OBJECTIVE: To investigate the effect of a heart rate (HR) lowering agent (Ivabradine) on features of atherosclerotic plaque vulnerability with magnetic resonance imaging (MRI), ultrasound imaging, and histology. APPROACH AND RESULTS: Atherosclerosis was induced in the abdominal aorta of 19 rabbits. Nine rabbits were treated with Ivabradine (17 mg/kg/day) during the entire study period. At week 14, imaging was performed. Plaque size was quantified on contrast-enhanced T1-weighted MR images...
2017: PloS One
https://www.readbyqxmd.com/read/28637178/the-at04a-vaccine-against-proprotein-convertase-subtilisin-kexin-type-9-reduces-total-cholesterol-vascular-inflammation-and-atherosclerosis-in-apoe-3leiden-cetp-mice
#2
Christine Landlinger, Marianne G Pouwer, Claudia Juno, José W A van der Hoorn, Elsbet J Pieterman, J Wouter Jukema, Guenther Staffler, Hans M G Princen, Gergana Galabova
Aims: Proprotein convertase subtilisin/kexin type 9 (PCSK9) has emerged as a promising therapeutic target for the treatment of hypercholesterolaemia and atherosclerosis. PCSK9 binds to the low density lipoprotein receptor and enhances its degradation, which leads to the reduced clearance of low density lipoprotein cholesterol (LDLc) and a higher risk of atherosclerosis. In this study, the AT04A anti-PCSK9 vaccine was evaluated for its therapeutic potential in ameliorating or even preventing coronary heart disease in the atherogenic APOE*3Leiden...
June 19, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28636844/clonal-hematopoiesis-and-risk-of-atherosclerotic-cardiovascular-disease
#3
Siddhartha Jaiswal, Pradeep Natarajan, Alexander J Silver, Christopher J Gibson, Alexander G Bick, Eugenia Shvartz, Marie McConkey, Namrata Gupta, Stacey Gabriel, Diego Ardissino, Usman Baber, Roxana Mehran, Valentin Fuster, John Danesh, Philippe Frossard, Danish Saleheen, Olle Melander, Galina K Sukhova, Donna Neuberg, Peter Libby, Sekar Kathiresan, Benjamin L Ebert
Background Clonal hematopoiesis of indeterminate potential (CHIP), which is defined as the presence of an expanded somatic blood-cell clone in persons without other hematologic abnormalities, is common among older persons and is associated with an increased risk of hematologic cancer. We previously found preliminary evidence for an association between CHIP and atherosclerotic cardiovascular disease, but the nature of this association was unclear. Methods We used whole-exome sequencing to detect the presence of CHIP in peripheral-blood cells and associated such presence with coronary heart disease using samples from four case-control studies that together enrolled 4726 participants with coronary heart disease and 3529 controls...
June 21, 2017: New England Journal of Medicine
https://www.readbyqxmd.com/read/28632131/reciprocal-analyses-in-zebrafish-and-medaka-reveal-that-harnessing-the-immune-response-promotes-cardiac-regeneration
#4
Didier Yr Stainier, Shih-Lei Ben Lai, Rubén Marín-Juez, Pedro Luís Moura, Carsten Kuenne, Jason Kuan Han Lai, Ayele Taddese Tsedeke, Stefan Guenther, Mario Looso
Zebrafish display a distinct ability to regenerate their heart following injury. However, this ability is not shared by another teleost, the medaka. In order to identify cellular and molecular bases for this difference, we performed comparative transcriptomic analyses following cardiac cryoinjury. This comparison points to major differences in immune cell dynamics between these models. Upon closer examination, we observed delayed and reduced macrophage recruitment in medaka, along with delayed neutrophil clearance...
June 20, 2017: ELife
https://www.readbyqxmd.com/read/28627346/-study-on-rac1-mapk-erk-pathway-mediated-mechanism-and-role-in-rats-with-ventilator-induced-lung-injury
#5
Guanghua Tao, Linghui Pan, Ren Jing, Fei Lin, Huijun Dai, Wanyun Ge
OBJECTIVE: To investigate the role of Ras-related C3 botulinum toxin substrate 1/mitogen-activated protein kinase/extracellular signal-regulated kinase (Rac1/MAPK/ERK) signal pathway in rats with ventilator induced lung injury (VILI) and its mechanism. METHODS: Thirty Sprague-Dawley (SD) rats were randomly divided into spontaneous respiration group, normal tidal volume (VT) group and high VT group with 10 rats in each group. The rats in spontaneous respiration group were kept their spontaneous breathing...
March 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28626076/cardiac-fibroblast-transcriptome-analyses-support-a-role-for-interferogenic-profibrotic-and-inflammatory-genes-in-anti-ssa-ro-associated-congenital-heart-block
#6
Robert M Clancy, Androo J Markham, Tanisha Jackson, Sara E Rasmussen, Miroslav Blumenberg, Jill P Buyon
The signature lesion of SSA/Ro autoantibody-associated congenital heart block (CHB) is fibrosis and a macrophage infiltrate, supporting an experimental focus on cues influencing the fibroblast component. The transcriptomes of human fetal cardiac fibroblasts were analyzed using two complementary approaches. Cardiac injury conditions were simulated in vitro by incubating human fetal cardiac fibroblasts with supernatants from macrophages transfected with the SSA/Ro-associated hY3. The top ten upregulated transcripts in the stimulated fibroblasts reflected a type I interferon (IFN) response (e...
June 16, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28614908/adenoviral-production-of-interleukin-2-at-the-tumor-site-removes-the-need-for-systemic-postconditioning-in-adoptive-cell-therapy
#7
Joao Manuel Santos, Riikka Havunen, Mikko Siurala, Víctor Cervera-Carrascon, Siri Tähtinen, Suvi Sorsa, Marjukka Anttila, Pauliina Karell, Anna Kanerva, Akseli Hemminki
Systemic high-dose interleukin-2 (IL-2) postconditioning has long been utilized in boosting the efficacy of T cells in adoptive cell therapy (ACT) of solid tumors. The resulting severe off-target toxicity of these regimens renders local production at the tumor an attractive concept with possible safety gains. We evaluated the efficacy and safety of intratumorally administered IL-2-coding adenoviruses in combination with tumor-infiltrating lymphocyte therapy in syngeneic Syrian hamsters bearing HapT1 pancreatic tumors and with T cell receptor transgenic ACT in B16...
June 14, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/28614792/cd4-t-lymphocytes-produce-adiponectin-in-response-to-transplants
#8
Sreedevi Danturti, Karen S Keslar, Leah R Steinhoff, Ran Fan, Nina Dvorina, Anna Valujskikh, Robert L Fairchild, William M Baldwin
Adiponectin is a pleiotropic cytokine with diverse immunomodulatory effects on macrophages and lymphocytes. In the current paradigm, lymphocytes and macrophages respond to adiponectin that is produced by adipocytes and other parenchymal cells. Using a model of chronic arterial inflammation in cardiac transplants, we found that T cells derived from the recipient migrate to the heart and produce adiponectin locally. The evidence that T cells produce significant amounts of adiponectin is based on 3 experimental approaches...
June 15, 2017: JCI Insight
https://www.readbyqxmd.com/read/28614216/refractory-adult-onset-still-disease-complicated-by-macrophage-activation-syndrome-and-acute-myocarditis-a-case-report-treated-with-high-doses-8%C3%A2-mg-kg-d-of-anakinra
#9
Federico Parisi, Annamaria Paglionico, Valentina Varriano, Gianfranco Ferraccioli, Elisa Gremese
RATIONALE: Myocarditis is a rare but potentially fatal complication of Still's disease (about 7% of total cases). PATIENT CONCERNS: A 42-year-old woman was admitted to our ward with high-grade fever, rash and polyarthralgia, lasting since 4 weeks and rapidly complicated by MAS and acute heart failure. DIAGNOSES: Adult Onset Still's Disease rapidly developping macrophage activation syndrome and disseminated intravascular coagulopathy, further complicated by iperacute myocarditis with cardiac arrest...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28611666/mineralocorticoid-receptor-signaling-as-a-therapeutic-target-for-renal-and-cardiac-fibrosis
#10
REVIEW
Greg H Tesch, Morag J Young
Activation of the mineralocorticoid receptor (MR) plays important roles in both physiological and pathological events. Blockade of MR signaling with MR antagonists (MRAs) has been used clinically to treat kidney and cardiac disease associated with hypertension and other chronic diseases, resulting in suppression of fibrosis in these organs. However, the current use of steroidal MRAs has been limited by off target effects on other hormone receptors or adverse effects on kidney tubular function. In this review, we summarize recent insights into the profibrotic roles of MR signaling in kidney and cardiovascular disease...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28596376/cre-lox-studies-identify-resident-macrophages-as-the-major-source-of-circulating-coagulation-factor-xiii-a
#11
Cora M L Beckers, Kingsley R Simpson, Kathryn J Griffin, Jane M Brown, Lih T Cheah, Kerrie A Smith, Jean Vacher, Paul A Cordell, Mark T Kearney, Peter J Grant, Richard J Pease
OBJECTIVE: To establish the cellular source of plasma factor (F)XIII-A. APPROACH AND RESULTS: A novel mouse floxed for the F13a1 gene, FXIII-A(flox/flox) (Flox), was crossed with myeloid- and platelet-cre-expressing mice, and cellular FXIII-A mRNA expression and plasma and platelet FXIII-A levels were measured. The platelet factor 4-cre.Flox cross abolished platelet FXIII-A and reduced plasma FXIII-A to 23±3% (P<0.001). However, the effect of platelet factor 4-cre on plasma FXIII-A was exerted outside of the megakaryocyte lineage because plasma FXIII-A was not reduced in the Mpl(-/-) mouse, despite marked thrombocytopenia...
June 8, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28592028/-analysis-of-12-cases-of-exogenous-lipoid-pneumonia-confirmed-by-pathology
#12
Y X Wang, F Fang, Y F Guo, Y M Li, T Y Sun, M Zhang, J Chen, B M Fang
Objective: To study the etiological, clinical, radiological, diagnostic, therapeutic, and prognostic manifestations of exogenous lipoid pneumonia (ELP), and therefore to improve the diagnosis and treatment of this disease. Methods: The clinical data of 12 cases of ELP confirmed by pathology were retrospectively analyzed. Results: The patients consisted of 9 males and 3 females, with an average age of 73.8 years (range, 44 to 100 years). The underlying diseases were variable, including diseases affecting the general condition (multiple organ failure, chronic heart and renal insufficiency, pemphigoid, etc) and conditions with increased risk of aspiration (sequelae of cerebrovascular disease, Alzheimer's disease, advanced stage of nasopharyngeal carcinoma, paralytic ileus, etc)...
June 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28573134/high-fat-and-fat-enriched-diets-impair-the-benefits-of-moderate-physical-training-in-the-aorta-and-the-heart-in-rats
#13
Cleverson Rodrigues Fernandes, Vinicius Kannen, Karina Magalhães Mata, Fernando Tadeu Frajacomo, Alceu Afonso Jordão Junior, Bianca Gasparotto, Juliana Yumi Sakita, Jorge Elias Junior, Daphne Santoro Leonardi, Fernando Marum Mauad, Simone Gusmão Ramos, Sergio Akira Uyemura, Sergio Britto Garcia
AIM: Millions of people die each year due to cardiovascular disease (CVD). A Western lifestyle not only fuses a significant intake of fat with physical inactivity and obesity but also promotes CVD. Recent evidence suggests that dietary fat intake impairs the benefits of physical training. We investigated whether aerobic training could reverse the adverse effects of a high-fat diet (HFD) on the aorta. Then, we explored whether this type of exercise could reverse the damage to the heart that is imposed by fat-enriched diet (FED)...
2017: Frontiers in Nutrition
https://www.readbyqxmd.com/read/28562065/role-of-platelet-derived-tgf-%C3%AE-1-and-ros-in-radiation-induced-organ-fibrosis
#14
Jasimuddin Ahamed, Jeffrey Laurence
SIGNIFICANCE: This review evaluates the role of platelet-derived TGF-β1 in oxidative stress-linked pathologic fibrosis, with an emphasis on the heart and kidney, using ionizing radiation as a clinically relevant stimulus. Current radiation-induced organ fibrosis interventions focus on pan-neutralization of transforming growth factor (TGF)-β1 or use of anti-oxidants and anti-proliferative agents, with limited clinical efficacy. Recent Advances: Pathologic fibrosis represents excessive accumulation of collagen and other extracellular matrix (ECM) components following dysregulation of a balance between ECM synthesis and degradation...
May 31, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28559694/galectin-3-a-novel-biomarker-for-the-prognosis-of-heart-failure
#15
REVIEW
Hilman Zulkifli Amin, Lukman Zulkifli Amin, Ika Prasetya Wijaya
Heart failure (HF) is still a global burden which carries substantial risk of morbidity and mortality. Thus, appropriate approach of diagnosis and layering the prognosis of HF are of great importance. In this paper we discuss and review a novel biomarker, which is called galectin-3 and already approved by Food and Drugs Administration (FDA) as a prediction tool for HF. Galectin-3, which is secreted by macrophages under the influence of mediators like osteopontin, has been known for its significant role in mediating cardiac fibrosis and inflammation...
2017: Clujul Medical (1957)
https://www.readbyqxmd.com/read/28558949/moderate-statin-treatment-reduces-prebeta-1-high-density-lipoprotein-levels-in-dyslipidemic-patients
#16
Alex G Quinn, Rachel Schwemberger, Eveline Oestreicher Stock, Irina Movsesyan, Andrea Axtell, Sunny Chang, Brian Y Ishida, Mary J Malloy, John P Kane, Clive R Pullinger
BACKGROUND: Elevated plasma levels of prebeta-1 high-density lipoprotein (HDL), the principal acceptor of cholesterol effluxed from macrophages, are associated with increased risk of atherosclerotic coronary heart disease and myocardial infarction. OBJECTIVE: The objective of the study was to assess the effects on prebeta-1 HDL levels of 6-week moderate-dose statin treatment. METHODS: We studied 101 patients (mean age 52.7 years; 53.5% female; 63 with primary hypercholesterolemia; 38 with combined hyperlipidemia) before and after treatment with statins...
May 4, 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28555959/design-of-the-magnetic-resonance-imaging-evaluation-of-mineralocorticoid-receptor-antagonism-in-diabetic-atherosclerosis-magma-trial
#17
Sanjay Rajagopalan, M Amer Alaiti, Kylene Broadwater, Aditya Goud, Juan Gaztanaga, Kim Connelly, Anas Fares, Shayan Shirazian, Catherine Kreatsoulas, Michael Farkouh, Mirela Dobre, Jeffrey C Fink, Matthew R Weir
Mineralocorticoid receptor (MR) activation plays an essential role in promoting inflammation, fibrosis, and target organ damage. Currently, no studies are investigating MR antagonism in patients with type 2 diabetes mellitus (T2DM) with chronic kidney disease, at high risk for cardiovascular complications, who are otherwise not candidates for MR antagonism by virtue of heart failure. Further, there is limited information on candidate therapies that may demonstrate differential benefit from this therapy. We hypothesized that MR antagonism may provide additional protection from atherosclerosis progression in higher-risk patients who otherwise may not be candidates for such a therapeutic approach...
May 26, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28555651/heart-failure-macrophages-take-centre-stage-in-the-heart-brain-kidney-axis
#18
Herman H W Silljé, Rudolf A de Boer
No abstract text is available yet for this article.
July 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28553113/methotrexate-carried-in-lipid-core-nanoparticles-reduces-myocardial-infarction-size-and-improves-cardiac-function-in-rats
#19
Raul C Maranhão, Maria C Guido, Aline D de Lima, Elaine R Tavares, Alyne F Marques, Marcelo D Tavares de Melo, Jose C Nicolau, Vera Mc Salemi, Roberto Kalil-Filho
PURPOSE: Acute myocardial infarction (MI) is accompanied by myocardial inflammation, fibrosis, and ventricular remodeling that, when excessive or not properly regulated, may lead to heart failure. Previously, lipid core nanoparticles (LDE) used as carriers of the anti-inflammatory drug methotrexate (MTX) produced an 80-fold increase in the cell uptake of MTX. LDE-MTX treatment reduced vessel inflammation and atheromatous lesions induced in rabbits by cholesterol feeding. The aim of the study was to investigate the effects of LDE-MTX on rats with MI, compared with commercial MTX treatment...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28549109/il-18-cleavage-triggers-cardiac-inflammation-and-fibrosis-upon-%C3%AE-adrenergic-insult
#20
Han Xiao, Hao Li, Jing-Jing Wang, Jian-Shu Zhang, Jing Shen, Xiang-Bo An, Cong-Cong Zhang, Ji-Min Wu, Yao Song, Xin-Yu Wang, Hai-Yi Yu, Xiang-Ning Deng, Zi-Jian Li, Ming Xu, Zhi-Zhen Lu, Jie Du, Wei Gao, Ai-Hua Zhang, Yue Feng, You-Yi Zhang
Aims: Rapid over-activation of β-adrenergic receptor (β-AR) upon stress leads to cardiac inflammation, a prevailing factor that underlies heart injury. However, mechanisms by which acute β-AR stimulation induce cardiac inflammation still remain unknown. Here, we set out to identify the crucial role of inflammasome/interleukin (IL)-18 in initiating and maintaining cardiac inflammatory cascades upon β-AR insult. Methods and results: Male C57BL/6 mice were injected with a single dose of β-AR agonist, isoproterenol (ISO, 5 mg/kg body weight) or saline subcutaneously...
May 26, 2017: European Heart Journal
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