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hypercholesterolemia without atherosclerosis

Pio Conti, Gianfranco Lessiani, Spyridon K Kritas, Gianpaolo Ronconi, Aessandro Caraffa, Theoharis C Theoharides
In atherosclerosis lipoproteins stimulate the innate immune response, leading to the release of inflammatory cytokines and chemokines. Hypercholesterolemia may activate the synthesis and release of inflammatory cytokines such as IL-1, which induces TNF release in mast cells (MCs). IL-1 and IL-1 family members orchestrate a broadening list of inflammatory diseases, including atherosclerosis. MCs are implicated in the pathophysiology of several diseases including allergy and inflammation. Activated MCs, located perivascularly, contribute to inflammation in atherosclerosis by producing inflammatory cytokines...
April 12, 2017: Tissue & Cell
Gerald H Tomkin, Daphne Owens
Cardiovascular morbidity and mortality are of increasing concern, not only to patients but also to the health care profession and service providers. The preventative benefit of treatment of dyslipidaemia is unquestioned but there is a large, so far unmet need to improve clinical outcome. There are exciting new discoveries of targets that may translate into improved clinical outcome. Areas covered: This review highlights some new pathways in cholesterol and triglyceride metabolism and examines new targets, new drugs and new molecules...
May 2017: Expert Opinion on Investigational Drugs
Tamara Merz, Tatjana Stenzel, Benedikt Nußbaum, Martin Wepler, Csaba Szabo, Rui Wang, Peter Radermacher, Oscar McCook
BACKGROUND: Downregulation of the hydrogen sulfide (H2S)-producing enzymes cystathionine-γ-lyase (CSE), cystathionine-β-synthase (CBS), and/or 3-mercaptopyruvate sulfurtransferase (3-MST) is associated with chronic cardiovascular pathologies. Nevertheless, equivocal data are available on both the expression and function of these enzymes in coronary arteries (CA). We recently reported that atherosclerotic pigs subjected to sepsis developed impaired cardiac function, which coincided with decreased myocardial CSE expression and increased nitrotyrosine formation...
December 2017: Intensive Care Medicine Experimental
Ilenia Minicocci, Simone Pozzessere, Cristina Prisco, Anna Montali, Alessia di Costanzo, Eliana Martino, Francesco Martino, Marcello Arca
OBJECTIVE: To evaluate the effectiveness of criteria based on child-parent assessment in predicting familial hypercholesterolemia (FH)-causative mutations in unselected children with hypercholesterolemia. STUDY DESIGN: LDLR, APOB, and PCSK9 genes were sequenced in 78 children and adolescents (mean age 8.4 ± 3.7 years) with clinically diagnosed FH. The presence of polygenic hypercholesterolemia was further evaluated by genotyping 6 low-density lipoprotein cholesterol (LDL-C)-raising single-nucleotide polymorphisms...
February 1, 2017: Journal of Pediatrics
Ntchapda Fidèle, Barama Joseph, Talla Emmanuel, Dimo Théophile
BACKGROUND: Hyperlipidemia and oxidative stress are major risk factors for atherosclerosis, and all three are among the most important risk factors for cardiovascular diseases. Cassia occidentalis aqueous extract has been used in African traditional medicine for the treatment of hypertension and associated cardiovascular diseases. This study was undertaken to evaluate the hypolipidemic and anti-atherosclerotic properties of the aqueous extract of the leaves of C. occidentalis in rats with hypercholesterolemia (HC)...
January 25, 2017: BMC Complementary and Alternative Medicine
Toshitsugu Sugimoto, Masayo Sato, Francis C Dehle, Alan J M Brnabic, Adele Weston, Russel Burge
BACKGROUND: The prevalence of both lifestyle-related metabolic disorders and osteoporosis is increasing in Asia. OBJECTIVES: To conduct a systematic review of the published literature to identify studies examining disorders of glucose and lipid metabolism (type 2 diabetes, hyperglycemia, hypercholesterolemia, hyperlipidemia, dyslipidemia, metabolic syndrome [MetS], and atherosclerosis) as risk factors for osteoporosis and fracture in Asian populations. Studies examining the relationship between metabolic disorders and bone mineral density (BMD) were also included...
May 2016: Value in Health Regional Issues
Sohsuke Yamada, Akihide Tanimoto, Yasuyuki Sasaguri
Histamine, a classic low-molecular-weight amine, is synthesized from L-histidine by histidine decarboxylase (HDC), and histamine-specific receptors (HRs) are essential for its actions. Our serial in vivo studies have uniquely reported that expression of histamine/HRs is variably identified in atherosclerotic lesions, and that HDC-gene knockout mice without histamine/HRs signaling show a marked reduction of atherosclerotic progression. These data have convinced us that histamine plays a pivotal role in the pathogenesis of atherosclerosis...
December 2016: Pathology International
Rodrigo Alonso, Pedro Mata, Ovidio Muñiz, Francisco Fuentes-Jimenez, Jose Luis Díaz, Daniel Zambón, Marta Tomás, Cesar Martin, Thomas Moyon, Mikaël Croyal, Aurélie Thedrez, Gilles Lambert
BACKGROUND AND AIMS: We aimed to assess whether elevated PCSK9 and lipoprotein (a) [Lp(a)] levels associate with coronary artery calcification (CAC), a good marker of atherosclerosis burden, in asymptomatic familial hypercholesterolemia. METHODS: We selected 161 molecularly defined FH patients treated with stable doses of statins for more than a year. CAC was measured using the Agatston method and quantified as categorical variable. Fasting plasma samples were collected and analyzed for lipids and lipoproteins...
August 27, 2016: Atherosclerosis
Francesco Martino, Alessandra Magenta, Giuseppe Pannarale, Eliana Martino, Cristina Zanoni, Francesco M Perla, Paolo E Puddu, Francesco Barillà
Cardiovascular disease (CVD) can arise at the early stages of development and growth. Genetic and environmental factors may interact resulting in epigenetic modifications with abnormal phenotypic expression of genetic information without any change in the nucleotide sequence of DNA. Maternal dietary imbalance, inadequate to meet the nutritional needs of the fetus can lead to intrauterine growth retardation, decreased gestational age, low birth weight, excessive post-natal growth and metabolic alterations, with subsequent appearance of CVD risk factors...
August 2016: Journal of Cardiovascular Medicine
Sara Irani, Xiaoyue Pan, Bailey C E Peck, Jahangir Iqbal, Praveen Sethupathy, M Mahmood Hussain
High plasma cholesterol levels are a major risk factor for atherosclerosis. Plasma cholesterol can be reduced by inhibiting lipoprotein production; however, this is associated with steatosis. Previously we showed that lentivirally mediated hepatic expression of microRNA-30c (miR-30c) reduced hyperlipidemia and atherosclerosis in mice without causing hepatosteatosis. Because viral therapy would be formidable, we examined whether a miR-30c mimic can be used to mitigate hyperlipidemia and atherosclerosis without inducing steatosis...
August 26, 2016: Journal of Biological Chemistry
A Kuczaj, P J Stryjewski, M Fudal, D Domal-Kwiatkowska, B Ryfiński, E Sliupkas-Dyrda, S Smolik, L Węglarz, U Mazurek, E Nowalany-Kozielska
Some reports confirm a potential role of Chlamydia pneumoniae (ChP) in atherogenesis. In order to explore possible association between ChP and atherosclerosis, investigations were carried out in which the frequency of ChP in the arterial wall and peripheral blood was assessed in a group of patients with chronic coronary artery disease (CAD). Fifty-seven patients were enrolled in the study, 13 women and 44 men aged 61.8±6.5 (47-74), with previously diagnosed CAD, scheduled for planned coronary artery bypass grafting due to clinical indications...
April 2016: Journal of Biological Regulators and Homeostatic Agents
Hernan A Perez, Nestor Horacio Garcia, John David Spence, Luis J Armando
INTRODUCTION: Cardiovascular events (CE) due to atherosclerosis are preventable. Identification of high-risk patients helps to focus resources on those most likely to benefit from expensive therapy. Atherosclerosis is not considered for patient risk categorization, even though a fraction of CE are predicted by Framingham risk factors. Our objective was to assess the incremental value of combining total plaque area (TPA) with the Framingham risk score (FramSc) using post-test probability (Ptp) in order to categorize risk in patients without CE and identify those at high risk and requiring intensive treatment...
June 1, 2016: Archives of Medical Science: AMS
Masato Furuhashi, Akina Omori, Megumi Matsumoto, Yu Kataoka, Marenao Tanaka, Norihito Moniwa, Hirofumi Ohnishi, Hideaki Yoshida, Shigeyuki Saitoh, Kazuaki Shimamoto, Tetsuji Miura
Proprotein convertase subtilisin/kexin type 9 (PCSK9) binds to and degrades the low-density lipoprotein (LDL) receptor, leading to hypercholesterolemia and cardiovascular risk. Fatty acid binding protein 4 (FABP4/adipocyte FABP/aP2) is secreted from adipocytes in association with lipolysis, and circulating FABP4 has been reported to act as an adipokine for the development of insulin resistance and atherosclerosis. Elevated serum FABP4 level is associated with obesity, insulin resistance, dyslipidemia, and atherosclerosis...
July 15, 2016: American Journal of Cardiology
Mohamed Abo El-Asrar, Nancy Samir Elbarbary, Eman Abdel Rahman Ismail, AlShaimaa Abo Bakr
BACKGROUND: Angiopoietin-2 is a growth factor involved in the pathophysiology of vascular and inflammatory diseases such as arteriosclerosis. Carotid or aortic scans provide noninvasive screening tools for assessment of preclinical atherosclerosis in high-risk children. AIM: We assessed serum angiopoietin-2 in children and adolescents with type 1 diabetes mellitus as a potential marker for vascular complications in relation to glycemic control, inflammation and vascular structure...
July 2016: Angiogenesis
Jin Li, Shaoqiang Lin, Paul M Vanhoutte, Connie W Woo, Aimin Xu
BACKGROUND: Altered composition of the gut microbiota is involved in both the onset and progression of obesity and diabetes mellitus. However, the link between gut microbiota and obesity-related cardiovascular complications has not been explored. The present study was designed to investigate the role of Akkermansia muciniphila, a mucin-degrading bacterium with beneficial effects on metabolism, in the pathogenesis of atherosclerosis in apolipoprotein E-deficient (Apoe(-/-)) mice. METHODS AND RESULTS: Apoe(-/-) mice on normal chow diet or a Western diet were treated with A muciniphila by daily oral gavage for 8 weeks, followed by histological evaluations of atherosclerotic lesion in aorta...
June 14, 2016: Circulation
Yacov Fogelman, Diana Gaitini, Eli Carmeli
BACKGROUND: Ethanolic extract of licorice root has been shown to reduce low-density lipoprotein (LDL) oxidation in atherosclerotic mice and in both hypercholesterolemic and normal lipidemic humans. OBJECTIVE: This study examined the effect of licorice-root extract on carotid intima-media thickness (CIMT) in individuals with hypercholesterolemia. DESIGN: Individuals with hypercholesterolemia (total cholesterol ≥6.18 mmol/L [240 mg/dL]) and without significant stenosis were randomly allocated to two groups: an experimental group that consumed 0...
2016: Food & Nutrition Research
Martin Bødtker Mortensen, Line Nilsson, Tore G Larsen, Eirild Espeseth, Marie Bek, Martin M Bjørklund, Mette K Hagensen, Anne Wolff, Stine Gunnersen, Ernst-Martin Füchtbauer, Ebbe Boedtkjer, Jacob F Bentzon
BACKGROUND: Hypertension is a major risk factor for development of atherosclerotic cardiovascular disease (ASCVD). Although lowering blood pressure with antihypertensive drugs reduces the increased risk of ASCVD, residual increased risk still remains, suggesting that hypertension may cause chronic changes that promote atherosclerosis. Thus, we tested the hypothesis that hypertension increases the susceptibility to atherosclerosis in mice even after a period of re-established normotension...
June 2016: Atherosclerosis
Qingtao Meng, Di Shi, Jiayue Feng, Yanling Su, Yang Long, Sen He, Si Wang, Yong Wang, Xiangxun Zhang, Xiaoping Chen
OBJECTIVE: Hypercholesterolemia can cause damage to the artery. Intermedin (IMD) is a novel member of the calcitonin gene-related peptide family. This study aims to investigate the aortic expression of IMD and its receptors in hypercholesterolemia without atherosclerosis. METHODS: Male Wistar rats were fed with high cholesterol diet, with or without simvastatin and vitamin C. Both the malondialdehyde (MDA) and superoxide dismutase (SOD) in plasma and aorta were determined as the oxidative stress biomarkers...
2016: Annals of Clinical and Laboratory Science
M H Nielsen, H Irvine, S Vedel, B Raungaard, H Beck-Nielsen, A Handberg
Objective. Microvesicles (MVs) are small cell-derived particles shed upon activation. Familial hypercholesterolemia (FH) particularly when associated with Achilles tendon xanthomas (ATX) predisposes to atherosclerosis, possibly through oxLDL-C interaction with the CD36 receptor. To investigate the hypothesis that MVs derived from cells involved in atherosclerosis are increased in FH and that CD36 expressing MVs (CD36+ MVs) may be markers of oxLDL-C-induced cell activation, cell-specific MVs were measured in FH patients with and without ATX and their association with atherogenic lipid profile was studied...
2016: Oxidative Medicine and Cellular Longevity
Krunoslav Buljan, Silva Butković Soldo, Davor Janculjak, Dragutin Kadojić, Marija Candrlić, Mirta Bensić, Vesna Buljan
The intima-media thickness (IMT) of carotid arteries is a marker of subclinical atherosclerosis associated with risk factors for atherosclerosis and a predictor of vascular disease. The aim of the research was to determine the correlation of IMT and age, and above normal IMT values in healthy adults in Slavonia (eastern Croatia). The study included 275 subjects of both sexes, aged between 20 and 79, who had no clinical manifestations of vascular disease or presence of major risk factors for atherosclerosis (hypertension, hypercholesterolemia, diabetes mellitus, cigarette smoking)...
September 2015: Collegium Antropologicum
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