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Cholesterol controversy

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https://www.readbyqxmd.com/read/28078852/cell-based-therapies-for-experimental-diabetic-nephropathy-a-systematic-review-and-meta-analysis
#1
H J Tang, Z G Tian, X Yang, Y Cao, W G Li
Study has shown that stem cell–based therapies are promising strategies in the treatment of several chronic diseases, but their overall benefit in the treatment of diabetic nephropathy (DN) remains controversial. The purpose of this study is to summarize the evidence of the effect of cell-based therapy in the treatment of DN to guide future clinical trials. We searched PubMed, EmBase, and the Cochrane Library for studies from the inception of cell-based therapies up to July 2015. We included animal trials that reported the effects of cell-based therapy on kidney function, cardiovascular risk factors, and body factors...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28063740/high-density-lipoproteins-biology-epidemiology-and-clinical-management
#2
REVIEW
Hong Y Choi, Anouar Hafiane, Adel Schwertani, Jacques Genest
High-density lipoproteins (HDLs) have multiple pleiotropic effects against arteriosclerosis. Most are independent of the cholesterol mass within HDL particles. Yet, HDL cholesterol (HDL-C) remains a biomarker to assess cardiovascular risk. Whereas the epidemiological association between HDL-C and cardiovascular risk is strong, graded and coherent across populations, Mendelian randomization studies cast doubt on whether HDL-C is causally related to atherosclerotic cardiovascular disease. The apparent failure of HDL-C-raising therapies (fibrates, niacin, and cholesteryl ester transfer protein inhibitors) raises questions about the HDL-C hypothesis...
October 20, 2016: Canadian Journal of Cardiology
https://www.readbyqxmd.com/read/28059793/resveratrol-intervenes-in-the-cholesterol-and-isoprenoid-mediated-amyloidogenic-processing-of-a%C3%AE-pp-in-familial-alzheimer-s-disease
#3
Mohan Sathya, Ponnusamy Moorthi, Palanisamy Premkumar, Mahesh Kandasamy, Kesavan Swaminathan Jayachandran, Muthuswamy Anusuyadevi
Deterioration of cholesterol metabolism has recently been a frontier subject of investigation in the field of Alzheimer's disease (AD). Though amyloid-β protein precursor (AβPP) primes the pathological cascade, changes in cholesterol levels and its intermediates, geranyl geranyl pyrophosphate and farnesyl pyrophosphate, is expected to have a different consequence on AβPP processing and amyloid-β (Aβ) generation. However, the use of statins (HMG-COA reductase inhibitor) has been widely implicated in slowing down the pathogenic progression of AD, while the epidemiological reports on its biological effect remains controversial...
December 3, 2017: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/28058854/effect-of-metformin-on-clinical-metabolic-and-endocrine-outcomes-in-women-with-polycystic-ovary-syndrome-a-meta-analysis-of-randomized-controlled-trial
#4
Roshni Patel, Gaurang Shah
OBJECTIVE: Metformin has been used as a treatment option for polycystic ovary syndrome (PCOS) since 1994; however, more than a hundred randomized clinical trials have reported controversial results regarding the efficacy of metformin in PCOS. This could be due to the small sample size and high variability in methodology between studies. The objective of the present meta-analysis was to determine the effect of metformin on clinical, metabolic, endocrine outcomes as compared to placebo in PCOS women...
January 6, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28055995/-are-therapeutic-ldl-goals-justified-controversies-between-the-european-and-american-guidelines
#5
Vicente Bertomeu-Martínez
Dyslipidemia is one of the most important risk factors of the cardiovascular disease, so its treatment is one of the key strategies of cardiovascular prevention. Statins have been consolidated as the reference treatment for the reduction of serum cholesterol levels. There are some divergences in the treatment of dyslipidemia between American and European guidelines. This narrative review discusses the key points of this controversy.
December 30, 2016: Medwave
https://www.readbyqxmd.com/read/28041920/secondary-cvd-prevention-lipid-modification-strategies-a-critical-analysis
#6
REVIEW
Samit Ghosal, Binayak Sinha
Lipid modification holds the key to effective secondary prevention of cardiovascular disease (CVD). However there is a controversy on whether it's all about targeting specific lipid sub fractions to a particular level or a direct effect of the agent(s) used or both. This review intends to look into these important issues from an evidence-based perspective. What is the appropriate timing of testing for lipid profile after a cardiovascular event? What is the rationale behind initiating with a high dose statin after an acute coronary event? What is the role of targeting lipid sub fractions beside LDL cholesterol? Is there any role for non-statin based therapy after an acute cardiovascular event? What constitutes a long-term lipid modification strategy in patients post CVD? These are very important questions, which needs to be addressed adequately as well as scientifically...
December 26, 2016: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28029409/serum-concentrations-and-gene-expression-of-sirtuin-1-in-healthy-and-slightly-overweight-subjects-after-caloric-restriction-or-resveratrol-supplementation-a-randomized-trial
#7
Antonio P Mansur, Alessandra Roggerio, Marisa F S Goes, Solange D Avakian, Dalila P Leal, Raul C Maranhão, Célia M C Strunz
BACKGROUND: Sirtuin 1 (Sirt1) plays an important role in vascular biology, and influences aspects of age-dependent atherosclerosis. In animals, the sirtuin system is strongly influenced by resveratrol and caloric restriction, but its expression in humans is controversial. This study investigated the effects of resveratrol and caloric restriction on Sirt1 serum concentrations and vascular biomarkers in a healthy human population. METHODS AND RESULTS: Forty-eight healthy participants (24 women) aged 55-65years were randomized to either 30days of resveratrol administration (500mg/day) or caloric restriction (1000cal/day)...
October 27, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/28024830/relationship-between-metabolic-syndrome-and-its-components-with-bone-densitometry-in-postmenopausal-women
#8
Mahnaz Abbasi, Seyed Amir Farzam, Zahra Mamaghani, Zohreh Yazdi
BACKGROUND: Prevention of osteoporosis and bone fracture and the relationship between metabolic syndrome and bone density are controversial issues. THE AIM OF THIS STUDY: The aim of this study was to evaluate the association between metabolic syndrome and its components with bone mineral density in post menopausal women referred for bone mineral density (BMD) test. METHODS: A total of 143 postmenopausal women with at least one year of menopause experience participated in this cross-sectional study...
December 15, 2016: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/27993872/endocan-tgf-beta-and-adma-as-risk-factors-for-endothelial-dysfunction-and-possible-vascular-disease-in-patients-with-subclinical-hypothyroidism
#9
Dilek Arpaci, Engin Karakece, Aysel Gurkan Tocoglu, Hasan Ergenc, Gonul Gurol, Ihsan Hakki Ciftci, Ali Tamer
PURPOSE: Although the relationship between atherosclerosis and overt hypothyroidism has been confirmed, it remains controversial in cases of subclinical hypothyroidism. Higher TSH and similar T4 suggest differences in set-points or differences due to diagnostic limitations regarding subclinical hypothyroidism. Endothelial dysfunction (ED) is a marker rather than a precursor of cardiovascular disease. Asymmetric dimethylarginine (ADMA) and endocan are known as novel markers of ED in various diseases...
December 2016: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/27986128/high-thyroid-stimulating-hormone-levels-increase-proinflammatory-and-cardiovascular-markers-in-patients-with-extreme-obesity
#10
Jaime Héctor Gómez-Zamudio, Victoria Mendoza-Zubieta, Aldo Ferreira-Hermosillo, Marío Antonio Molina-Ayala, Adán Valladares-Sálgado, Fernando Suárez-Sánchez, Jose de Jesús Peralta-Romero, Miguel Cruz
BACKGROUND AND AIMS: Obesity is an important health problem worldwide and many studies have suggested a relationship between obesity and thyroid function, with controversial results. Interestingly, high TSH levels have been involved with the presence of inflammatory state and risk for developing cardiovascular diseases in hypothyroid and obese patients. The aim in this work was to determine the prevalence of hypothyroidism in patients with extreme obesity and to determine whether their TSH levels were related to increased serum levels of inflammatory and cardiovascular markers...
August 2016: Archives of Medical Research
https://www.readbyqxmd.com/read/27975064/statin-as-a-combined-therapy-for-advanced-stage-ovarian-cancer-a-propensity-score-matched-analysis
#11
Hong-Yu Chen, Qian Wang, Qiu-Hong Xu, Li Yan, Xue-Feng Gao, Yan-Hong Lu, Li Wang
Background. Despite the great achievements in the treatment of advanced-stage ovarian cancer, it is still a severe condition with an unfavorable 5-year survival rate. Statins have been suggested to reduce the risk of several cancers beyond their cholesterol-lowing effects. However, the prognostic significance of statins in patients with advanced-stage ovarian cancer remains controversial. Methods. A retrospective study was performed to evaluate the association between statin intake and overall survival (OS) among patients with advanced-stage ovarian cancer...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27951534/statins-and-the-kidney-friend-or-foe
#12
Patrick M Honore, Rita Jacobs, Inne Hendrickx, Elisabeth De Waele, Viola Van Gorp, Jouke De Regt, Herbert D Spapen
Statins essentially are cholesterol-lowering drugs that are extensively prescribed for primary and secondary prevention of cardiovascular disease. Compelling evidence suggests that the beneficial effects of statins may not only be due to controlling cholesterol levels but also due to a pleiotropic cholesterol-independent anti-inflammatory, antioxidant, endothelial-protective and plaque-stabilizing activity. Along this line, statins may also exert acute and long-term effects on renal function. We present a narrative literature review that summarizes arguments in favour or against the preventive and/or therapeutic use of statins in kidney-related diseases or complications...
December 13, 2016: Blood Purification
https://www.readbyqxmd.com/read/27940550/cox-2-dependent-and-independent-effects-of-cox-2-inhibitors-and-nsaids-on-proatherogenic-changes-in-human-monocytes-macrophages
#13
Iryna Voloshyna, Lora J Kasselman, Steven E Carsons, Michael J Littlefield, Irving H Gomolin, Joshua De Leon, Allison B Reiss
It is the second decade of controversy regarding the cardiovascular effects of cyclo-oxygenase-2 (COX-2) inhibitors. At this time, celecoxib is the only available COX-2-specific inhibitor for treatment of pain and inflammation. Therefore, the present study was designed primarily to determine the impact of celecoxib on cholesterol handling (uptake via scavenger receptors and efflux from the cells) and foam cell formation in human THP-1 macrophages, followed by comparison to rofecoxib and other non-steroidal anti-inflammatory drugs (NSAIDs)...
December 9, 2016: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
https://www.readbyqxmd.com/read/27921347/objective-snoring-time-and-carotid-intima-media-thickness-in-non-apneic-female-snorers
#14
Jinyoung Kim, Allan I Pack, Barbara J Riegel, Julio A Chirinos, Alexandra Hanlon, Seung Ku Lee, Chol Shin
Controversy persists about whether snoring can affect atherosclerotic changes in adjacent vessels, independently of obstructive sleep apnea and other cardiovascular risk factors. This study examined the independent association between snoring and carotid artery intima-media thickness (IMT) in non-apneic snorers and non-snorers. We studied 180 non-apneic snorers and non-snorers participating in a full-night home-based sleep study. Snoring sound was measured objectively by a microphone. Based on snoring time across the night, participants were classified as non-snorers (snoring time: 0%), mild snorers (1-25%) and moderate to heavy snorers (≥25%)...
December 6, 2016: Journal of Sleep Research
https://www.readbyqxmd.com/read/27915128/cholesterol-reducing-agents-inhibit-assembly-of-type-i-parainfluenza-viruses
#15
Shringkhala Bajimaya, Tsuyoshi Hayashi, Tünde Frankl, Peter Bryk, Brian Ward, Toru Takimoto
Many enveloped RNA viruses utilize lipid rafts for the assembly of progeny virions, but the role of cholesterol, a major component of rafts, on paramyxovirus budding and virion formation is controversial. In this study, we analyzed the effects of FDA-approved cholesterol-reducing agents, gemfibrozil and lovastatin, on raft formation and assembly of human parainfluenza virus type 1 (hPIV1) and Sendai virus (SeV). Treatment of the human airway epithelial A549 cells with the agents, especially when combined, significantly decreased production of infectious hPIV1 and SeV...
January 15, 2017: Virology
https://www.readbyqxmd.com/read/27904549/effects-of-nigella-sativa-supplementation-on-blood-parameters-and-anthropometric-indices-in-adults-a-systematic-review-on-clinical-trials
#16
REVIEW
Alireza Mohtashami, Mohammad Hasan Entezari
BACKGROUND: Nigella sativa (N. sativa) has been used in traditional medicine and several studies have been performed in the last decades to reveal the effects of it on different medical disorders such as diabetes, dyslipidemia, hypertension, and obesity. We evaluated the effects of N. sativa supplementation on lipid profiles, glycemic control, blood pressure (BP), and some anthropometric indices in humans. MATERIALS AND METHODS: A search on published studies was done by using databases including PubMed, Google Scholar, Thomas Reuters Web of Science, and Cochrane...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27890613/activation-of-ppar%C3%AE-does-not-contribute-to-macrophage-abca1-expression-and-abca1-mediated-cholesterol-efflux-to-apoai
#17
Meixiu Jiang, Xiaoju Li
Activation of macrophage ABCA1/G1 expression and cholesterol efflux is believed one of the mechanisms by which PPARγ inhibits atherosclerosis. PPARγ can also activate CD36 expression, a receptor for oxLDL, which may supply LXR ligands to activate LXR-ABCA1/G1 pathways. However, the controversial effects of PPARγ on ABCA1 expression have been reported. In this study, we used peritoneal macrophages isolated from wild type and CD36 deficient (CD36(-/-)) mice to clarify if PPARγ ligands can influence ABCA1 expression by CD36 function...
January 22, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/27879044/clustering-according-to-urolithin-metabotype-explains-the-interindividual-variability-in-the-improvement-of-cardiovascular-risk-biomarkers-in-overweight-obese-individuals-consuming-pomegranate-a-randomised-clinical-trial
#18
Antonio González-Sarrías, Rocío García-Villalba, María Romo-Vaquero, Cesarettin Alasalvar, Asim Örem, Pilar Zafrilla, Francisco A Tomás-Barberán, María V Selma, Juan Carlos Espín
SCOPE: The pomegranate lipid-lowering properties remain controversial, probably due to the interindividual variability in polyphenol (ellagitannins) metabolism. OBJECTIVE: We aimed at investigating whether the microbial-derived ellagitannin-metabolizing phenotypes, i.e. urolithin metabotypes A, (UM-A), B (UM-B) and 0 (UM-0), influence the effects of pomegranate extract (PE) consumption on eighteen cardiovascular risk biomarkers in healthy overweight-obese individuals...
November 23, 2016: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/27832688/changes-in-body-mass-index-and-lipid-profile-in-psoriatic-patients-after-treatment-with-standard-protocol-of-infliximab
#19
Amir Houshang Ehsani, Hossein Mortazavi, Kamran Balighi, Mahboubeh Sadat Hosseini, Arghavan Azizpour, Seyyedeh Pardis Hejazi, Azadeh Goodarzi, Seyyedeh Bahareh Darvari
Psoriasis is a chronic and inflammatory dermatologic disease. Psoriasis may predispose to cardiovascular disease and diabetes. However, the role of tumor necrosis factor (TNF) inhibitor in mediating this risk is controversial. Regarding frequent use of infliximab in psoriasis, and the hypothesis that anti TNF-α treatment may increase Body Mass Index (BMI) and alter lipid profile in these patients, the aim of this study was to assess changes in BMI and Lipid Profile and level of leptin in Psoriatic Patients under Treatment of Standard Protocol of Infliximab in a 24 week period...
September 2016: Acta Medica Iranica
https://www.readbyqxmd.com/read/27832037/effects-of-helicobacter-pylori-eradication-on-insulin-resistance-and-metabolic-parameters-a-systematic-review-and-meta-analysis
#20
Sikarin Upala, Anawin Sanguankeo, Sheikh A Saleem, Veeravich Jaruvongvanich
INTRODUCTION: Previous studies have shown a close relationship between Helicobacter pylori (H. pylori), insulin resistance, and altered metabolic parameters. However, the effects of H. pylori eradication on these conditions remain controversial. We carried out a systematic review and meta-analysis to evaluate the effects of H. pylori eradication on insulin resistance and metabolic parameters. METHODS: We searched CENTRAL, MEDLINE, and EMBASE databases from their inception to July 2016...
February 2017: European Journal of Gastroenterology & Hepatology
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