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https://www.readbyqxmd.com/read/29679745/integrated-genomic-and-metabolomic-profiling-of-isc1-an-emerging-leishmania-donovani-population-in-the-indian-subcontinent
#1
Bart Cuypers, Maya Berg, Hideo Imamura, Franck Dumetz, Géraldine De Muylder, Malgorzata A Domagalska, Suman Rijal, Narayan Raj Bhattarai, Ilse Maes, Mandy Sanders, James A Cotton, Pieter Meysman, Kris Laukens, Jean-Claude Dujardin
Leishmania donovani is the responsible agent for visceral leishmaniasis (VL) in the Indian subcontinent (ISC). The disease is lethal without treatment and causes 0.2 to 0.4 million cases each year. Recently, reports of VL in Nepalese hilly districts have increased as well as VL cases caused by L. donovani from the ISC1 genetic group, a new and emerging genotype. In this study, we perform for the first time an integrated, untargeted genomics and metabolomics approach to characterize ISC1, in comparison with the Core Group (CG), main population that drove the last outbreak of VL in the ISC...
April 18, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29673593/augmented-neutrophil-extracellular-traps-formation-promotes-atherosclerosis-development-in-socially-defeated-apoe-mice
#2
Keita Yamamoto, Hiroyuki Yamada, Noriyuki Wakana, Masakazu Kikai, Kensuke Terada, Naotoshi Wada, Shinichiro Motoyama, Makoto Saburi, Takeshi Sugimoto, Daisuke Kami, Takehiro Ogata, Masakazu Ibi, Chihiro Yabe-Nishimura, Satoaki Matoba
Depression is an independent risk factor of cardiovascular disease (CVD); however, the causal association remains undefined. We exposed mice to repeated social defeat (RSD) to precipitate depressive-like behaviors, and investigated the effects on atherosclerosis. Eight-week-old male apoE-/- mice were exposed to RSD by housing with a larger CD-1 mouse in a shared home cage. They were subjected to vigorous physical contact daily for 10 consecutive days and fed a high-cholesterol diet (HCD) for 6 weeks. The social interaction ratio and immobility time showed dramatic social avoidance before and after HCD feeding...
April 16, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29673358/contribution-of-tlr4-signaling-in-intermittent-hypoxia-mediated-atherosclerosis-progression
#3
Xianqin Zeng, Rong Guo, Mei Dong, Julia Zheng, Huili Lin, Huixia Lu
BACKGROUND: Intermittent hypoxia (IH), a typical character of obstructive sleep apnea (OSA), is related to atherogenesis. However, the role of IH on atherosclerosis (AS) progression and the mechanisms involved remains poorly understood. METHODS: In the present study, high-fat fed ApoE-/- mice were treated with recombinant shRNA-TLR4 lentivirus and exposed to IH. Atherosclerotic lesions on the en face aorta and cross-sections of aortic root were examined by Oil-Red O staining...
April 19, 2018: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29673115/the-nuclear-retinoid-related-orphan-receptor-ror%C3%AE-controls-circadian-thermogenic-programming-in-white-fat-depots
#4
Chloé Monnier, Martine Auclair, Gala Le Cam, Marie-Pauline Garcia, Bénédicte Antoine
The RORα-deficient staggerer (sg/sg) mouse is lean and resistant to diet-induced obesity. Its thermogenic activity was shown to be increased not only in brown adipose tissue (BAT), but also in subcutaneous white adipose tissue (WAT) where UCP1 content was enhanced, however, without Prdm16 coexpression. Our observation of partial multilocular lipid morphology of WAT in sg/sg mice both in the inguinal and perigonadal sites led us to focus on the phenotype of both fat depots. Because RORα is a nuclear factor acting in the clock machinery, we looked at the circadian expression profile of genes involved in thermogenesis and browning in WAT and BAT depots of sg/sg and WT mice, through real-time quantitative PCR and western blotting...
April 2018: Physiological Reports
https://www.readbyqxmd.com/read/29671028/biochemical-profiling-of-rat-embryonic-stem-cells-grown-on-electrospun-polyester-fibers-using-synchrotron-infrared-microspectroscopy
#5
Ernesto Doncel-Pérez, Gary Ellis, Christophe Sandt, Peter S Shuttleworth, Agatha Bastida, Julia Revuelta, Eduardo García-Junceda, Alfonso Fernández-Mayoralas, Leoncio Garrido
Therapeutic options for spinal cord injuries are severely limited; current treatments only offer symptomatic relief and rehabilitation focused on educating the individual on how to adapt to their new situation to make best possible use of their remaining function. Thus, new approaches are needed, and interest in the development of effective strategies to promote the repair of neural tracts in the central nervous system inspired us to prepare functional and highly anisotropic polymer scaffolds. In this work, an initial assessment of the behavior of rat neural progenitor cells (NPCs) seeded on poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) fiber scaffolds using synchrotron-based infrared microspectroscopy (SIRMS) is described...
April 18, 2018: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29665379/superparamagnetic-iron-oxide-loaded-lipid-nanocarriers-incorporated-in-thermosensitive-in-situ-gel-for-magnetic-brain-targeting-of-clonazepam
#6
Haidy Abbas, Hanan Refai, Nesrine El Sayed
The objective of the study was to target clonazepam (CZ) to the brain through the intranasal olfactory mucosa using nanolipid carriers loaded with superparamagnetic iron oxide nanoparticles (SPION) to allow nanocarrier guidance and retention with an external magnetic field. For improved delivery the nanolipid carriers were incorporated in a thermosensitive mucoadhesive in situ gel. Different nanolipid carriers including solid lipid nanoparticles (SLN) and nanostructured lipid carriers (NLC) were prepared and characterized with respect to particle size, zeta potential, entrapment efficiency and in vitro release...
April 14, 2018: Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/29663317/atrophic-scar-formation-in-acne-patients-involves-long-acting-immune-responses-with-plasma-cells-and-alteration-of-sebaceous-glands
#7
I Carlavan, B Bertino, M Rivier, P Martel, V Bourdes, M Motte, S Déret, P Reiniche, C Menigot, A Khammari, B Dreno, P Fogel, J J Voegel
BACKGROUND: Possible outcomes of acne lesions are atrophic scars which may cause serious psychological distress. Current treatments of post-acne scarring often require invasive procedures. Pathophysiological studies on acne scarring investigated only the first week of papule life. OBJECTIVES: Study the pathophysiology of atrophic scar formation to identify molecular and cellular pathways that can lead to new therapies for the prevention of acne scarring. METHODS: Large-scale gene expression profiling and immunohistochemistry analysis were performed on uninvolved skin and papules in both, scar-prone (SP) and non-scar-prone (NSP) acne patients, at different time points...
April 16, 2018: British Journal of Dermatology
https://www.readbyqxmd.com/read/29661875/hc2091-kills-mycobacterium-tuberculosis-by-targeting-the-mmpl3-mycolic-acid-transporter
#8
Huiqing Zheng, John T Williams, Garry B Coulson, Elizabeth R Haiderer, Robert B Abramovitch
Tuberculosis, caused by the intracellular pathogen Mycobacterium tuberculosis (Mtb), is a deadly disease that requires a long course of treatment. The emergence of drug resistant strains has driven efforts to discover new small molecules that can kill the bacterium. Here we report characterizations of the compound HC2091 that kills Mtb in a time- and dose-dependent manner in vitro , as well as inhibiting Mtb growth in macrophages. Whole genome sequencing of spontaneous resistant mutants to HC2091 identified single nucleotide variants in the mmpL3 mycolic acid transporter gene...
April 16, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29657678/safety-of-sodium-glucose-cotransporter-2-inhibitors-sglt2-i-during-the-month-of-ramadan-in-muslim-patients-with-type-2-diabetes
#9
Alaaeldin Bashier, Azza Abdulaziz Khalifa, Elamin Ibrahim Abdelgadir, Maryam Ahmad Al Saeed, Amina Adil Al Qaysi, Murad Burhan Ali Bayati, Budoor Alemadi, Fawzi Bachet, Fatheya Alawadi, Mohammed Hassanein
Objectives: Sodium-glucose cotransporter 2 inhibitors (SGLT2-I) are a new class of antidiabetic drugs that might increase the risk of dehydration and hypoglycemia, particularly during the month of Ramadan in which Muslims abstain from eating and drinking for 14-16 hours daily. We aimed to provide real-life evidence about the safety of SGLT2-I during Ramadan. Methods: All patients over the age of 18 years on SGLT2-I before Ramadan 2016 who would be fasting during Ramadan were included...
March 2018: Oman Medical Journal
https://www.readbyqxmd.com/read/29655461/metabolomics-and-lipidomics-of-ischemic-stroke
#10
Anthony Au
Ischemic stroke is a sudden loss of brain function due to the reduction of blood flow. Brain tissues cease to function with subsequent activation of the ischemic cascade. Metabolomics and lipidomics are modern disciplines that characterize the metabolites and lipid components of a biological system, respectively. Because the pathogenesis of ischemic stroke is heterogeneous and multifactorial, it is crucial to establish comprehensive metabolomic and lipidomic approaches to elucidate these alterations in this disease...
2018: Advances in Clinical Chemistry
https://www.readbyqxmd.com/read/29652839/selenium-rich-ricegrass-juice-improves-antioxidant-properties-and-nitric-oxide-inhibition-in-macrophage-cells
#11
Rattanamanee Chomchan, Panupong Puttarak, Adelheid Brantner, Sunisa Siripongvutikorn
Ricegrass juice ( Oryza sativa L.) was introduced as a functional food as the consumption of sprouts or seedlings has been claimed to provide high nutritive value. Selenium (Se) is a trace mineral that plays a key role in the human antioxidation scheme. Supplementation of Se into plants is one strategy to enhance plant bioactivities, and the consumption of Se plant foods may confer superior health benefits. In this study, ricegrass juice extract was analyzed for its major phenolic components. The effect of ricegrass juice extracts bio-fortified with 0, 10 and 40 mg Se/L named as RG0, RG10, and RG40, respectively, were investigated for a percentage of cell viability, changes of endogenous antioxidant enzymes, lipid peroxidation, and nitric oxide inhibition in RAW264...
April 13, 2018: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29645002/proteomics-analysis-reveals-a-potential-new-target-protein-for-the-lipid-lowering-effect-of-berberine8998
#12
Cheng-Yin Yu, Gang-Yi Liu, Xiao-Hui Liu, Yu-Zhou Gui, Hai-Ming Liu, Hong-Chao Zheng, Darek C Gorecki, Asmita V Patel, Chen Yu, Yi-Ping Wang
Berberine8998 is a newly synthesized berberine derivative with better lipid-lowering activity and improved absorption. The objective of this study was to investigate the effects of berberine8998 on serum cholesterol and lipid levels in vivo and to examine the mechanisms involved. Hamsters on high-fat diet (HFD) were administered berberine or berberine8998 (50 mg·kg-1 ·d-1 , ig) for 3 weeks. Berberine8998 administration significantly lowered the total cholesterol, triglycerides and LDL-C levels in HFD hamsters...
April 12, 2018: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/29643974/sirt3-a-new-regulator-of-cardiovascular-diseases
#13
REVIEW
Wei Sun, Caixia Liu, Qiuhui Chen, Ning Liu, Youyou Yan, Bin Liu
Cardiovascular diseases (CVDs) are the leading causes of death worldwide, and defects in mitochondrial function contribute largely to the occurrence of CVDs. Recent studies suggest that sirtuin 3 (SIRT3), the mitochondrial NAD+ -dependent deacetylase, may regulate mitochondrial function and biosynthetic pathways such as glucose and fatty acid metabolism and the tricarboxylic acid (TCA) cycle, oxidative stress, and apoptosis by reversible protein lysine deacetylation. SIRT3 regulates glucose and lipid metabolism and maintains myocardial ATP levels, which protects the heart from metabolic disturbances...
2018: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29643297/investigation-of-pharmacological-responses-to-anti-diabetic-drugs-in-female-spontaneously-diabetic-torii-sdt-fatty-rats-a-new-nonalcoholic-steatohepatitis-nash-model
#14
Yasufumi Toriniwa, Tomoyuki Saito, Katsuhiro Miyajima, Yukihito Ishii, Kinuko Uno, Tatsuya Maekawa, Tohru Matsui, Shinichi Kume, Takahisa Yamada, Takeshi Ohta
Nonalcoholic steatohepatitis (NASH) is a progressive liver disease, and some patients develop hepatic cirrhosis/carcinoma. Animal models play key roles in the development of new therapies for NASH. In this study, the pharmacological effects of metformin and pioglitazone were investigated in female Spontaneously Diabetic Torii (SDT) fatty rats to verify the utility of this model. The anti-diabetic drugs were administered to SDT fatty rats fed a cholesterol-enriched diet from 4 to 25 weeks, and changes in food intake, body weight, and blood chemistry parameters were evaluated every 4 weeks...
April 10, 2018: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29642607/a-new-inflammatory-marker-elevated-monocyte-to-hdl-cholesterol-ratio-associated-with-smoking
#15
Mücahid Yılmaz, Hidayet Kayançiçek
OBJECTIVES: The adverse effects of smoking in various pathologies are mediated by its effects on the inflammatory system. The monocyte to high-density lipoprotein cholesterol (HDL-C) ratio (MHR) has recently emerged as an indicator of inflammation. We aimed to investigate the relationship between MHR and cigarette smoking. PATIENTS AND METHODS: Three hundred and ninety seven consecutive participants who smoke and 515 healthy subjects with no history of smoking enrolled in the study...
April 10, 2018: Journal of Clinical Medicine
https://www.readbyqxmd.com/read/29627580/poloxamer-188-decreases-membrane-toxicity-of-mutant-sod1-and-ameliorates-pathology-observed-in-sod1-mouse-model-for-als
#16
Jacob J Riehm, Lijun Wang, Ghanashyam Ghadge, Michael Teng, Ana M Correa, Jeremy D Marks, Raymond P Roos, Michael J Allen
Here we report a gain in function for mutant (mt) superoxide dismutase I (SOD1), a cause of familial amyotrophic lateral sclerosis (FALS), wherein small soluble oligomers of mtSOD1 acquire a membrane toxicity. Phosphatidylglycerol (PG) lipid domains are selectively targeted, which could result in membrane damage or "toxic channels" becoming active in the bilayer. This PG-selective SOD1-mediated membrane toxicity is largely reversible in vitro by a widely-available FDA-approved surfactant and membrane-stabilizer P188...
April 5, 2018: Neurobiology of Disease
https://www.readbyqxmd.com/read/29620941/cerebrovascular-%C3%AE-amyloid-deposition-and-associated-microhemorrhages-in-a-tg2576-alzheimer-mouse-model-are-reduced-with-a-dha-enriched-diet
#17
Justine Hur, Véronique Mateo, Nicolas Amalric, Mégane Babiak, Gilbert Béréziat, Claire Kanony-Truc, Thierry Clerc, Régis Blaise, Isabelle Limon
Cerebral amyloid angiopathy (CAA) is a major contributor to Alzheimer's disease (AD) pathogenesis. Like AD, CAA is often accompanied by marked inflammation, aggravating associated vasculopathies. No evidence-based prevention or treatment strategies are available. Here, we evaluate the possible beneficial effect of a diet enriched with docosahexaenoic acid (DHA), which is known to attenuate inflammation in CAA. Tg2576 mice, a transgenic model of AD/CAA, were fed a DHA-enriched diet starting at 2 mo of age and ending at 10, 14, or 18 mo of age...
April 5, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29616657/-diabetes-is-a-challenge-a-ten-year-follow-up-of-people-with-diabetes
#18
Hafdis Lilja Gudlaugsdottir, Arun Kristin Sigurdardottir
INTRODUCTION: Diabetes is a chronic disease often with serious and costly complications. Therefore well organised diabetes care is needed. The purpose was to research outcome of treatment on biological parameters in people with type one and two diabetes in one primary care over ten years and compare with international guidelines. MATERIAL AND METHODS: Retrospective cohort study, information was gathered from medical records at Sudurnes Health Center, in the years 2005, 2010 and 2015...
April 2018: Læknablađiđ
https://www.readbyqxmd.com/read/29616308/the-role-of-extracellular-vesicles-when-innate-meets-adaptive
#19
REVIEW
Tom Groot Kormelink, Sanne Mol, Esther C de Jong, Marca H M Wauben
Innate immune cells are recognized for their rapid and critical contribution to the body's first line of defense against invading pathogens and harmful agents. These actions can be further amplified by specific adaptive immune responses adapted to the activating stimulus. Recently, the awareness has grown that virtually all innate immune cells, i.e., mast cells, neutrophils, macrophages, eosinophils, basophils, and NK cells, are able to communicate with dendritic cells (DCs) and/or T and B cells, and thereby significantly contribute to the orchestration of adaptive immune responses...
April 3, 2018: Seminars in Immunopathology
https://www.readbyqxmd.com/read/29609842/akebia-saponin-d-alleviates-hepatic-steatosis-through-bnip3-induced-mitophagy
#20
Li-Li Gong, Song Yang, Wen Zhang, Fei-Fei Han, Ya-Li Lv, Zi-Rui Wan, He Liu, Yang-Jie Jia, Ling-Ling Xuan, Li-Hong Liu
Akebia Saponin D (ASD) is the most abundant constituent of the rhizome of Dipsacus asper Wall. The prior studies have shown that ASD alleviates hepatic steatosis targeted at the modulation of autophagy and exerts hepatoprotective effects through mitochondria. However, it is still unclear which signal transduction pathway that ASD increase autophagy and protect the mitochondria. The purpose of this paper was to explore the mechanisms through which ASD alleviates hepatic steatosis. ASD significantly reduced lipid accumulation in BRL cells...
December 1, 2017: Journal of Pharmacological Sciences
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