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https://www.readbyqxmd.com/read/30503498/a-novel-splicing-mutation-in-the-abca1-gene-causing-tangier-disease-and-familial-hdl-deficiency-in-a-large-family
#1
Marianna Maranghi, Gessica Truglio, Antonio Gallo, Elvira Grieco, Antonella Verrienti, Anna Montali, Pietro Gallo, Francesco Alesini, Marcello Arca, Marco Lucarelli
Tangier disease is a rare disorder of lipoprotein metabolism that presents with extremely low levels of HDL cholesterol and apoprotein A-I. It is caused by mutations in the ATP-binding cassette transporter A1 (ABCA1) gene. Clinical heterogeneity and mutational pattern of Tangier disease are poorly characterized. Moreover, also familial HDL deficiency may be caused by mutations in ABCA1 gene. ATP-binding cassette transporter A1 (ABCA1) gene mutations in a patient with Tangier disease, who presented an uncommon clinical history, and in his family were found and characterized...
November 29, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/30417448/effect-of-high-density-lipoprotein-on-oocyte-maturation-and-bovine-embryo-development-in-vitro
#2
Joao Alveiro Alvarado Rincón, Jorgea Pradieé, Mariana Härter Remião, Tiago Veiras Collares, Bruna Mion, Bernardo Garziera Gasperin, Monique Tomazele Rovani, Marcio Nunes Corrêa, Ligia Margareth Cantarelli Pegoraro, Augusto Schneider
High-density lipoprotein (HDL) is the main lipoprotein in the follicular fluid and it has anti-inflammatory, antioxidant and cryoprotectant properties. The anti-inflammatory and antioxidant potential are derived from its lipid composition, especially the apolipoprotein AI (ApoAI) and paraoxonase 1 (PON1). The aim of this study was to evaluate the effect of HDL during in vitro maturation (IVM) on oocyte maturation and early bovine embryo development. For this, cumulus oocyte complexes (COCs) were obtained from bovine ovaries collected at a local slaughterhouse...
November 12, 2018: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/30291429/kidney-as-modulator-and-target-of-good-bad-hdl
#3
REVIEW
Jianyong Zhong, Haichun Yang, Valentina Kon
The strong inverse relationship between low levels of high-density lipoproteins (HDLs) and atherosclerotic cardiovascular disease (CVD) led to the designation of HDL as the "good" cholesterol. The atheroprotection is thought to reflect HDL's capacity to efflux cholesterol from macrophages, followed by interaction with other lipoproteins in the plasma, processing by the liver and excretion into bile. However, pharmacologic increases in HDL-C levels have not led to expected clinical benefits, giving rise to the concept of dysfunctional HDL, in which increases in serum HDL-C are not beneficial due to lost or altered HDL functions and transition to "bad" HDL...
October 5, 2018: Pediatric Nephrology: Journal of the International Pediatric Nephrology Association
https://www.readbyqxmd.com/read/30278357/increased-electronegativity-of-high-density-lipoprotein-in-uremia-patients-impairs-its-functional-properties-and-is-associated-with-the-risk-of-coronary-artery-disease
#4
Chiz-Tzung Chang, Ming-Yi Shen, Ju-Yi Hsieh, Chia-Ming Chang, Hsin-Yi Liao, Fang-Yu Chen, Chung Y Hsu, Chao-Yuh Yang, Chao-Jung Chen
BACKGROUND AND AIMS: Uremia patients have impaired high-density lipoprotein (HDL) function and a high risk of coronary artery disease (CAD). Increased lipoprotein electronegativity can compromise lipoprotein function, but the effect of increased HDL electronegativity on HDL function and its association with CAD in uremia patient are not clear. We aimed to assess HDL electronegativity and various properties of HDL in uremia patients and investigate whether electronegative HDL is a risk factor for CAD in these individuals...
November 2018: Atherosclerosis
https://www.readbyqxmd.com/read/30271349/lack-of-correlation-of-plasma-hdl-with-fecal-cholesterol-and-plasma-cholesterol-efflux-capacity-suggests-importance-of-hdl-functionality-in-attenuation-of-atherosclerosis
#5
Neelam Srivastava, Angelo B Cefalu, Maurizio Averna, Rai A K Srivastava
A number of clinical findings suggested HDL-raising as a plausible approach to treat residual risk of CVD. However, lack of CVD risk reduction by elevated HDL cholesterol (HDL-C) through cholesterol ester transfer protein (CETP) inhibition and enhanced risk reduction in apolipoprotein A-I Milano (apoAI-M) individuals with low HDL-C shifted the focus from HDL-C level to HDL function. In the present study, we investigated correlations between HDL-C, HDL function, fecal cholesterol excretion, and ex vivo plasma cholesterol efflux capacity (CEC) in animal models using two HDL modulators, LXR and PPAR-α agonists...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/30249512/relationship-of-lipoprotein-associated-apolipoprotein-c-iii-with-lipid-variables-and-coronary-artery-disease-risk-the-epic-norfolk-prospective-population-study
#6
Julian C van Capelleveen, Sang-Rok Lee, Rutger Verbeek, John J P Kastelein, Nicholas J Wareham, Erik S G Stroes, G Kees Hovingh, Kay-Tee Khaw, S Matthijs Boekholdt, Joseph L Witztum, Sotirios Tsimikas
BACKGROUND: Plasma apolipoprotein C-III (apoC-III) levels are associated with coronary artery disease (CAD) risk. OBJECTIVE: To assess whether lipoprotein-associated apoC-III levels predict risk of CAD events. METHODS: apoC-III associated with apoB, apoAI, and Lp(a) (apoCIII-apoB, apoCIII-apoAI, and apoCIII-Lp(a), respectively) were measured using high-throughput chemiluminescent enzyme-linked immunoassays in 2711 subjects (1879 controls and 832 cases with CAD) in the European Prospective Investigation into Cancer and Nutrition-Norfolk prospective population study with 7...
August 29, 2018: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/30239835/bronchoalveolar-lavage-proteomic-analysis-in-pulmonary-fibrosis-associated-with-systemic-sclerosis-s100a6-and-14-3-3%C3%AE%C2%B5-as-potential-biomarkers
#7
Claudia Landi, Elena Bargagli, Alfonso Carleo, Rosa Metella Refini, David Bennett, Laura Bianchi, Giuseppe Cillis, Antje Prasse, Luca Bini, Paola Rottoli
Objective: SSc is a rare severe connective tissue disorder. Its prognosis is mainly related to the development of pulmonary fibrosis (PF)-SSc and pulmonary arterial hypertension. No known therapy for PF-SSc modifies progressive lung fibrotic involvement. Research is therefore aimed at a deeper understanding of complex pathogenetic mechanisms and the possibility of new prognostic biomarkers and therapeutic targets. Methods: Towards the first of these aims, we conducted functional proteomic analysis of bronchoalveolar lavage samples from PF-SSc patients and smoker and non-smoker controls...
September 17, 2018: Rheumatology
https://www.readbyqxmd.com/read/30213800/cholesterol-efflux-responds-to-viral-load-and-cd4-counts-in-hiv-patients-and-is-dampened-in-hiv-exposed
#8
Olivia Tort, Tuixent Escribà, Lander Egaña-Gorroño, Elisa de Lazzari, Montserrat Cofan, Emma Fernandez, José Maria Gatell, Esteban Martinez, Felipe Garcia, Mireia Arnedo
Cholesterol efflux (CE) capacity has been inversely associated with atherosclerosis and may provide an insight on inflammation occurring in human immunodeficiency virus (HIV) individuals. We address this by studying CE in HIV patients at different stages of HIV disease progression. In this cross-sectional study, CE from ApoB-depleted plasma, lipids levels, viral load (VL), CD4+/CD8+ T-cells, high-sensitive C-reactive protein (hsCRP), and lipoprotein (a) were evaluated in untreated HIV-infected patients (UHIVs; n = 43), elite controllers (ECs; n = 8), HIV-exposed seronegative individuals (HESNs; n = 32), and healthy controls (HCs; n = 14)...
November 2018: Journal of Lipid Research
https://www.readbyqxmd.com/read/30187870/-correlation-of-apolipoprotein-ai-apolipoprotein-b-and-their-ratio-with-the-severity-of-cerebral-white-matter-lesions
#9
Weihua Huang, Tianming Lv, Huanmin Li, Shuhua Du, Canhong Yang, Shiqi Yuan
OBJECTIVE: To investigate the correlation of apolipoprotein AI (ApoAI), ApoB, ApoB/ApoAI and the severity of brain white matter lesions (WML). METHODS: A total of 648 patients with WML confirmed by brain magnetic resonance imaging (MRI) were divided into mild WML group ( n =386) and moderate to severe WML group ( n =262) according to evaluations with the Fazekas scale. The demographic data, blood biochemical parameters and the levels of ApoAI, ApoB and ApoB/AI ratio were compared between the two groups to identify the risk factors of moderate to severe WML...
July 30, 2018: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/30144814/increased-apolipoprotein-m-induced-by-lack-of-scavenger-receptor-bi-is-not-activated-via-hdl-mediated-cholesterol-uptake-in-hepatocytes
#10
Yue-Hua Feng, Lu Zheng, Jiang Wei, Miao-Mei Yu, Jun Zhang, Guang-Hua Luo, Ning Xu
BACKGROUND: Scavenger receptor BI (SR-BI) is a classic high-density lipoprotein (HDL) receptor, which mediates selective lipid uptake from HDL cholesterol esters (HDL-C). Apolipoprotein M (ApoM), as a component of HDL particles, could influence preβ-HDL formation and cholesterol efflux. The aim of this study was to determine whether SR-BI deficiency influenced the expression of ApoM. METHODS: Blood samples and liver tissues were collected from SR-BI gene knockout mice, and serum lipid parameters, including total cholesterol (TC), triglyceride (TG), high and low-density lipoprotein cholesterol (HDL-C and LDL-C) and ApoM were measured...
August 25, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/30079772/abca1-overexpression-in-endothelial-cells-in-vitro-enhances-apoai-mediated-cholesterol-efflux-and-decreases-inflammation
#11
Alexis Stamatikos, Nagadhara Dronadula, Philip Ng, Donna Palmer, Ethan Knight, Bradley K Wacker, Chongren Tang, Francis Kim, David A Dichek
Atherosclerosis, a disease of blood vessels, is driven by cholesterol accumulation and inflammation. Gene therapy that removes cholesterol from blood vessels and decreases inflammation is a promising approach for prevention and treatment of atherosclerosis. In previous work, we reported that helper-dependent adenoviral (HDAd) overexpression of apolipoprotein A-I (apoAI) in endothelial cells (ECs) increases cholesterol efflux in vitro and reduces atherosclerosis in vivo. However, the effect of HDAdApoAI on atherosclerosis is partial...
October 2, 2018: Human Gene Therapy
https://www.readbyqxmd.com/read/30060101/hdl-impairs-osteoclastogenesis-and-induces-osteoclast-apoptosis-via-upregulation-of-abcg1-expression
#12
Xinyun Huang, Yuan Lv, Panpan He, Zongbao Wang, Fang Xiong, Linhao He, Xilong Zheng, Dawei Zhang, Qi Cao, Chaoke Tang
Cholesterol is one of the major components of biological membranes and has an important function in osteoclast formation and survival. It has been reported that high-density lipoprotein (HDL) promotes cholesterol efflux from osteoclasts and induces their apoptosis, but the underlying mechanisms are unclear. In this study, we investigated how HDL promotes osteoclast cholesterol efflux and explored its effect on osteoclast formation and survival. Our results showed that the maximum diameter and fusion index of osteoclasts were decreased, while the ratios of osteoclasts with pyknotic nuclei were increased when cells were treated with HDL (600 ng/ml), as revealed by tartrate-resistant acid phosphatase-positive staining and microscopy assay...
September 1, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/30053815/association-of-plasma-apolipoprotein-ciii-high-sensitivity-c-reactive-protein-and-tumor-necrosis-factor-%C3%AE-contributes-to-the-clinical-features-of-coronary-heart-disease-in-li-and-han-ethnic-groups-in-china
#13
Lin Chen, Minzeng Sun, Hui Liu, Lihui Ma, Tiansong Wang, Peiqiong Li, Mingqin Lin, Haifeng Lin, Penghuan Chang, Yueli Liu
BACKGROUND: Apolipoprotein CIII (apoCIII) is an independent risk for coronary heart disease (CHD). In this study, we investigated the associations among plasma apoCIII, hs-CRP and TNF-α levels and their roles in the clinical features of CHD in the Li and Han ethnic groups in China. METHODS: A cohort of 474 participants was recruited (238 atherosclerotic patients and 236 healthy controls) from the Li and Han ethnic groups. Blood samples were obtained to evaluate apoCIII, TNF-α, hs-CRP and lipid profiles...
July 27, 2018: Lipids in Health and Disease
https://www.readbyqxmd.com/read/30037759/among-young-sri-lankan-patients-with-diabetes-how-do-lipid-profiles-differ-between-those-with-and-without-metabolic-syndrome
#14
Gaya W Katulanda, Harsha A Dissanayake, Prasad Katulanda, David R Matthews, Brian Shine
AIMS: Metabolic syndrome (MetS) is a risk factor for cardiovascular disease (CVD). Apolipoproteins are emerging as powerful predictors of CVD. We aimed to study associations of metabolic syndrome and apoB, apoAI, apoB/AI ratio in young Sri Lankans with type 2 diabetes. MATERIALS & METHODS: Blood samples were available from 690 patients with type 2 diabetes in Sri Lanka Young Diabetes Study, and were analysed for apoB, apoAI, total cholesterol (TC), high-density lipoprotein cholesterol (HDLC), triglycerides (TG) and glycated haemoglobin (HbA1c )...
July 17, 2018: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/30031631/serum-amyloid-a-paraoxonase-1-activity-and-apolipoprotein-concentrations-as-biomarkers-of-subclinical-atherosclerosis-risk-in-adrenal-incidentaloma-patients
#15
Narin Nasiroglu Imga, Canan Topcuoglu, Dilek Berker, Turan Turhan
BACKGROUND: Adrenal incidentalomas (AIs), particularly subclinical hypercortisolism (SH), are related to an increased risk of atherosclerosis. The anti-oxidative enzyme paraoxonase-1 (PON1) and the acute phase reactant serum amyloid A (SAA) are transported by highdensity lipoprotein and reciprocally regulated in acute inflammatory response. Our aim was to investigate serum SAA, PON1, and apolipoprotein levels as indicators of subclinical atherosclerosis in patients with nonfunctioning AI (NFAI) and SH...
April 2018: Archives of Medical Research
https://www.readbyqxmd.com/read/29998871/expression-analysis-of-apolipoproteins-ai-aiv-in-hepatocellular-carcinoma-a-protein-based-hepatocellular-carcinoma-associated-study
#16
Dipu Bharali, Basu Dev Banerjee, Mausumi Bharadwaj, Syed Akhtar Husain, Premashis Kar
Background & objectives: Hepatocellular carcinoma (HCC) is one of the leading causes of cancer mortality. The objective of this study was to find out the differential expression of apolipoproteins (ApoAI and ApoAIV) in HCC and cases of liver cirrhosis and chronic hepatitis (controls) without HCC and to compare ApoAI and ApoAIV expression with alpha-foetoprotein (AFP), the conventional marker in HCC. Methods: Fifty patients with HCC and 50 controls comprising patients with liver cirrhosis (n=25) and chronic hepatitis (n=25) without HCC were included in this study...
April 2018: Indian Journal of Medical Research
https://www.readbyqxmd.com/read/29928895/hdl-apoa-i-induces-the-expression-of-angiopoietin-like-4-angptl4-in-endothelial-cells-via-a-pi3k-akt-foxo1-signaling-pathway
#17
Dimitris Theofilatos, Panagiotis Fotakis, Efi Valanti, Despina Sanoudou, Vassilis Zannis, Dimitris Kardassis
BACKGROUND: High Density Lipoprotein (HDL) and its main protein component, apolipoprotein A-I (apoA-I), have numerous atheroprotective functions on various tissues including the endothelium. Therapies based on reconstituted HDL containing apoA-I (rHDL-apoA-I) have been used successfully in patients with acute coronary syndrome, peripheral vascular disease or diabetes but very little is known about the genomic effects of rHDL-apoA-I and how they could contribute to atheroprotection. OBJECTIVE: The present study aimed to understand the endothelial signaling pathways and the genes that may contribute to rHDL-apoA-I-mediated atheroprotection...
October 2018: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/29927973/non-fasting-lipid-profile-determination-in-presumably-healthy-children-impact-on-the-assessment-of-lipid-abnormalities
#18
Lukasz Szternel, Magdalena Krintus, Katarzyna Bergmann, Tadeusz Derezinski, Grazyna Sypniewska
OBJECTIVE: Despite the common use of non-fasting measurements for lipid profile in children it remains unclear as to the extent non-fasting conditions have on laboratory results of lipids measurements. We aimed to assess the impact of non-fasting lipid profile on the occurrence of dyslipidemia in children. MATERIALS AND METHODS: Basic lipid profile including: total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C) and triglycerides (TG), as well as small, dense-LDL-C (sd-LDL-C), apolipoprotein AI (ApoAI), apolipoprotein B (ApoB) and lipoprotein(a) [Lp(a)], were measured in 289 presumably healthy children aged 9-11 in both fasting and non-fasting condition...
2018: PloS One
https://www.readbyqxmd.com/read/29879989/protein-markers-of-dysfunctional-hdl-in-scavenger-receptor-class-b-type-i-deficient-mice
#19
Jia Cao, Yanyong Xu, Feifei Li, Liang Shang, Daping Fan, Hong Yu
BACKGROUND: Scavenger receptor class B type I (SR-BI) plays a key role in high density lipoproteins (HDL) metabolism. SR-BI deficiency in mice results in enhanced susceptibility to atherosclerosis with abnormal large, cholesterol enriched, and functional impaired HDL. This study was to characterize the protein markers of dysfunctional HDL in SR-BI deficient (SR-BI-/- ) mice and to test if the defective of HDL might be affected by probucol treatment. METHODS: Shotgun proteomics and 2-D gel electrophoresis were performed to examine the profile of HDL protein and distribution of HDL particles isolated from SR-BI-/- mice...
June 7, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29852278/plasma-pcsk9-levels-and-lipoprotein-distribution-are-preserved-in-carriers-of-genetic-hdl-disorders
#20
Massimiliano Ruscica, Sara Simonelli, Margherita Botta, Alice Ossoli, Maria Giovanna Lupo, Paolo Magni, Alberto Corsini, Marcello Arca, Livia Pisciotta, Fabrizio Veglia, Guido Franceschini, Nicola Ferri, Laura Calabresi
Proprotein convertase subtilisin/kexin 9 (PCSK9), a protein regulating the number of cell-surface LDL receptors (LDLR), circulates partially associated to plasma lipoproteins. How this interaction alters PCSK9 plasma levels is still unclear. In the present study, we took advantage of the availability of a large cohort of carriers of genetic HDL disorders to evaluate how HDL defects affect plasma PCSK9 levels and its distribution among lipoproteins. Plasma PCSK9 concentrations were determined by ELISA in carriers of mutations in LCAT, ABCA1, or APOAI genes, and lipoprotein distribution was analyzed by FPLC...
September 2018: Biochimica et biophysica acta. Molecular and cell biology of lipids
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