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https://www.readbyqxmd.com/read/29228364/age-dependent-changes-in-mean-and-variance-of-gene-expression-across-tissues-in-a-twin-cohort
#1
Ana Viñuela, Andrew A Brown, Alfonso Buil, Pei-Chien Tsai, Matthew N Davies, Jordana T Bell, Emmanouil T Dermitzakis, Timothy D Spector, Kerrin S Small
Changes in mean and variance of gene expression with age have consequences for healthy aging and disease development. Age-dependent changes in phenotypic variance have been associated to a decline in regulatory functions leading to increase in disease risk. Here we investigate age-related mean and variance changes in gene expression measured by RNA-seq of fat, skin, whole blood and derived lymphoblastoid cell lines (LCLs) expression from 855 adult female twins. We see evidence of up to 60% of age effects on transcription levels shared across tissues, and 47% of those on splicing...
December 8, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/29218106/extracorporeal-shock-wave-therapy-effectively-protects-brain-against-chronic-cerebral-hypo-perfusion-induced-neuropathological-changes
#2
Han-Tan Chai, Kuan-Hung Chen, Christopher Glenn Wallace, Chih-Hung Chen, Pei-Hsun Sung, Yung-Lung Chen, Chun-Man Yuen, Pei-Lin Shao, Cheuk-Kwan Sun, Hsueh-Wen Chang, Ching-Jen Wang, Mel S Lee, Hon-Kan Yip, Sheung-Fat Ko
This study tested the hypothesis that extracorporeal shock wave (ECSW) therapy could protect mouse brain from chronic cerebral hypoperfusion (CHP)-induced neuropathological changes in a bilateral carotid arterial stenosis (CAS) model. Adult-male C57BL/6 (B6) mice (n=36) were randomized into group 1 (sham-control), group 2 (CHP) and group 3 [CHP+ECSW (100 impulses at 0.15 mJ/mm2) on day 5, 10 and 15 after CHP induction]. By day 60 after CHP induction, the white matter lesion, protein expressions of inflammatory (TNF-α/NF-κB/iNOS), oxidative-stress (NOX-1/NOX-2/NOX-4/nitrotyrosine), angiogenesis (eNOS/CD31), apoptotic (Bax/caspase-3/PARP), fibrotic (Smad3/TGF-ß) and mitochondrial-damaged (cytosolic cytochrome-C) biomarkers were significantly higher in group 2 than in groups 1 and 3, and significantly higher in group 3 than in group 1, whereas the protein expressions of anti-apoptotic (Bcl-2), anti-fibrotic (BMP-2/Smad1/5), and mitochondrial-integrity (mitochondrial cytochrome-C) biomarkers showed an opposite pattern to inflammation among the three groups (all P<0...
2017: American Journal of Translational Research
https://www.readbyqxmd.com/read/29214537/branched-chain-dicationic-ionic-liquids-for-fatty-acid-methyl-ester-assessment-by-gas-chromatography
#3
Mohsen Talebi, Rahul A Patil, Leonard M Sidisky, Alain Berthod, Daniel W Armstrong
Twelve bis- or dicationic ionic liquids (ILs) including eight based on imidazolium, a single one based on phosphonium, and three based on pyrrolidinium cationic units were prepared with the bis(trifluoromethyl sulfonyl) imide anion. The two identical cationic moieties were attached by different alkyl spacers having three or five carbons and differing alkyl substituents attached to the spacer. The SLB-IL111 column, as the most polar commercial stationary phase known, was included in the study for comparison...
December 6, 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/29204367/protein-and-fat-meal-content-increase-insulin-requirement-in-children-with-type-1-diabetes-role-of-duration-of-diabetes
#4
M van der Hoogt, J C van Dyk, R C Dolman, M Pieters
Background and objective: Hyperglycaemia remains a challenge in type 1 diabetes since current regimes used to determine meal insulin requirements prove to be ineffective. This is particularly problematic for meals containing high amounts of protein and fat. We aimed to determine the post-prandial glycaemic response and total insulin need for mixed meals, using sensor-augmented insulin pumps in children with type 1 diabetes. Methods: Twenty-two children with type 1 diabetes, aged 4-17 years on insulin pump therapy completed this home-based, cross-over, randomised controlled trial...
December 2017: Journal of Clinical & Translational Endocrinology
https://www.readbyqxmd.com/read/29192516/knockdown-of-angiopoietin-like-2-mimics-the-benefits-of-intermittent-fasting-on-insulin-responsiveness-and-weight-loss
#5
Cécile Martel, Anthony Pinçon, Alexandre Maxime Bélanger, Xiaoyan Luo, Marc-Antoine Gillis, Olivia de Montgolfier, Nathalie Thorin-Trescases, Éric Thorin
Angiopoietin-like 2 (ANGPTL2) is an inflammatory adipokine linking obesity to insulin resistance. Intermittent fasting, on the other hand, is a lifestyle intervention able to prevent obesity and diabetes but difficult to implement and maintain. Our objectives were to characterize a link between ANGPTL2 and intermittent fasting and to investigate whether the knockdown of ANGPTL2 reproduces the benefits of intermittent fasting on weight gain and insulin responsiveness in knockdown and wild-type littermates mice...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29181716/-imaging-characteristics-of-malignant-and-benign-lesions-of-skeletal-muscle
#6
REVIEW
L Leonard, H J Meyer, A Surov
There are many different tumors and tumor-like lesions with variable biological behavior that may affect the skeletal musculature. The aim of this study was to review the different intramuscular lesions and to provide a classification based on their radiological patterns. Intramuscular lesions can present as solid, liquid, semiliquid or fat equivalent manifestations and also as diffuse muscle enlargement and muscle calcification. Additionally, lesions with mixed patterns of the aforementioned alterations can also occur...
November 27, 2017: Der Radiologe
https://www.readbyqxmd.com/read/29163194/on-the-metabolism-of-exogenous-ketones-in-humans
#7
Brianna J Stubbs, Pete J Cox, Rhys D Evans, Peter Santer, Jack J Miller, Olivia K Faull, Snapper Magor-Elliott, Satoshi Hiyama, Matthew Stirling, Kieran Clarke
Background and aims: Currently there is considerable interest in ketone metabolism owing to recently reported benefits of ketosis for human health. Traditionally, ketosis has been achieved by following a high-fat, low-carbohydrate "ketogenic" diet, but adherence to such diets can be difficult. An alternative way to increase blood D-β-hydroxybutyrate (D-βHB) concentrations is ketone drinks, but the metabolic effects of exogenous ketones are relatively unknown. Here, healthy human volunteers took part in three randomized metabolic studies of drinks containing a ketone ester (KE); (R)-3-hydroxybutyl (R)-3-hydroxybutyrate, or ketone salts (KS); sodium plus potassium βHB...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/29141542/cocoa-polyphenols-evidence-from-epidemiological-studies
#8
Chisa Matsumoto
BACKGROUND: Accumulating evidence suggests potential preventive effects of chocolate/cocoa on the risk of cardio vascular disease (CVD). However, cocoa products also contain high levels of sugar and fat, which increase CVD risk factors. Even, the identity of the substance in chocolate/cocoa that has a favorable effect on CVD and CVD risk factors remains unclear, growing evidence from experimental studies suggests that cocoa polyphenols might be a major contributor to cardiovascular-protective effects...
November 14, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/29130293/hand-to-foot-bioelectrical-impedance-analysis-to-measure-fat-mass-in-healthy-children-a-comparison-with-air-displacement-plethysmography
#9
Lisa Foucart, Annelies De Decker, Isabelle Sioen, Stefaan De Henauw, Nathalie Michels
AIM: To identify children at risk of overweight, assessing children's body composition in a valid way is crucial. The present cross-sectional study examines the comparability of children's fat mass percentage obtained by hand-to-foot bioelectrical impedance analysis (BIA) versus BodPod air-displacement plethysmography as a reference method. METHODS: The body composition of 206 Belgian children (7-13 years; 7.7% overweight) was measured with BodPod and hand-to-foot BIA (Tanita BC418 with built-in formula)...
November 2017: Nutrition & Dietetics: the Journal of the Dietitians Association of Australia
https://www.readbyqxmd.com/read/29122609/structural-connections-support-emotional-connections-uncinate-fasciculus-microstructure-is-related-to-the-ability-to-decode-facial-emotion-expressions
#10
Bethany M Coad, Mark Postans, Carl J Hodgetts, Nils Muhlert, Kim S Graham, Andrew D Lawrence
The Uncinate Fasciculus (UF) is an association fibre tract connecting regions in the frontal and anterior temporal lobes. UF disruption is seen in several disorders associated with impaired social behaviour, but its functional role is unclear. Here we set out to test the hypothesis that the UF is important for facial expression processing, an ability fundamental to adaptive social behaviour. In two separate experiments in healthy adults, we used high-angular resolution diffusion-weighted imaging (HARDI) and constrained spherical deconvolution (CSD) tractography to virtually dissect the UF, plus a control tract (the corticospinal tract (CST)), and quantify, via tissue fractional anisotropy (FAT), individual differences in tract microstructure...
November 6, 2017: Neuropsychologia
https://www.readbyqxmd.com/read/29091003/american-college-of-radiology-compliant-short-protocol-breast-mri-for-high-risk-breast-cancer-screening-a-prospective-feasibility-study
#11
Basak E Dogan, Marion E Scoggins, Jong Bum Son, Wei Wei, Rosalind Candelaria, Wei T Yang, Jingfei Ma
OBJECTIVE: The purpose of this study was to assess the feasibility of a short protocol for screening breast MRI that is noninferior to standard-of-care (SOC) MRI in image quality that complies with American College of Radiology accreditation requirements. SUBJECTS AND METHODS: In a prospective feasibility trial, 23 women at high risk underwent both an initial SOC MRI examination that included axial iterative decomposition of water and fat with echo asymmetry and least-squares estimation (IDEAL) and T1-weighted volume imaging for breast assessment (VIBRANT) dynamic contrast-enhanced sequences and a separate short breast MRI protocol comprising a fast spin-echo (FSE) triple-echo Dixon T2 sequence for T2-weighted imaging and a 3D dual-echo fast spoiled gradient-echo two-point Dixon sequence for dynamic contrast-enhanced imaging from October 1, 2015, through May 2, 2016...
November 1, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29075470/gut-microbiomes-of-mobile-predators-vary-with-landscape-context-and-species-identity
#12
Julia Tiede, Christoph Scherber, James Mutschler, Katherine D McMahon, Claudio Gratton
Landscape context affects predator-prey interactions and predator diet composition, yet little is known about landscape effects on insect gut microbiomes, a determinant of physiology and condition. Here, we combine laboratory and field experiments to examine the effects of landscape context on the gut bacterial community and body condition of predatory insects. Under laboratory conditions, we found that prey diversity increased bacterial richness in insect guts. In the field, we studied the performance and gut microbiota of six predatory insect species along a landscape complexity gradient in two local habitat types (soybean fields vs...
October 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29058270/double-standards-in-body-evaluation-the-influence-of-identification-with-body-stimuli-on-ratings-of-attractiveness-body-fat-and-muscle-mass
#13
Mona M Voges, Claire-Marie Giabbiconi, Benjamin Schöne, Manuel Waldorf, Andrea S Hartmann, Silja Vocks
Although it is well documented that women evaluate their own body differently from other bodies, it remains unclear whether this discrepancy is based on double standards because of identity or on objective differences between these bodies. The aim of this study was therefore to test whether women apply double standards depending on a body's identity when evaluating the same bodies presented with different faces. Average-weight women (N = 104) rated body attractiveness, body fat, and muscle mass of thin, average-weight, overweight, athletic, and hypermuscular bodies with either another female's face or their own face...
October 20, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/29053583/body-weight-cycling-with-identical-diet-composition-does-not-affect-energy-balance-and-has-no-adverse-effect-on-metabolic-health-parameters
#14
Inge F Palm, Rianne G A E Schram, Hans J M Swarts, Evert M van Schothorst, Jaap Keijer
BACKGROUND: Body weight (BW) cycling, the yo-yo effect, is generally thought to have adverse effects on human metabolic health. However, human and animal experiments are limited in number and do not provide clear answers, partly due to large variations in experimental design, parameters measured, and definitions of BW cycling. Here, we examined the effect of repetitive BW cycling versus single- and non-cycling control groups, without alterations in diet composition, on steady state BW and metabolic parameters...
October 20, 2017: Nutrients
https://www.readbyqxmd.com/read/29049335/structural-prediction-of-two-novel-human-atypical-slc-transporters-mfsd4a-and-mfsd9-and-their-neuroanatomical-distribution-in-mice
#15
Emelie Perland, Sofie Victoria Hellsten, Nadine Schweizer, Vasiliki Arapi, Fatemah Rezayee, Mona Bushra, Robert Fredriksson
Out of the 430 known solute carriers (SLC) in humans, 30% are still orphan transporters regarding structure, distribution or function. Approximately one third of all SLCs belong to the evolutionary conserved and functionally diverse Major Facilitator Superfamily (MFS). Here, we studied the orphan proteins, MFSD4A and MFSD9, which are atypical SLCs of MFS type. Hidden Markov Models were used to identify orthologues in several vertebrates, and human MFSD4A and MFSD9 share high sequence identity with their identified orthologues...
2017: PloS One
https://www.readbyqxmd.com/read/29036914/molecular-characterization-and-functional-analysis-of-a-ferritin-heavy-chain-subunit-from-the-eri-silkworm-samia-cynthia-ricini
#16
Hai-Zhong Yu, Shang-Zhi Zhang, Yan Ma, Dong-Qiong Fei, Bing Li, Li-Ang Yang, Jie Wang, Zhen Li, Azharuddin Muhammad, Jia-Ping Xu
Ferritins are conserved iron-binding proteins that are primarily involved in iron storage, detoxification and the immune response. Despite the importance of ferritin in organisms, little is known about their roles in the eri-silkworm (Samia cynthia ricini). We previously identified a ferritin heavy chain subunit named ScFerHCH in the S. c. ricini transcriptome database. The full-length S. c. ricini ferritin heavy chain subunit (ScFerHCH) was 1863 bp and encoded a protein of 231 amino acids with a deduced molecular weight of 25...
October 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29031905/fibroblast-growth-factor-21-decreases-after-liver-fat-reduction-via-growth-hormone-augmentation
#17
Laurie R Braun, Meghan N Feldpausch, Natalia Czerwonka, Martin Torriani, Steven K Grinspoon, Takara L Stanley
OBJECTIVE: Fibroblast growth factor 21 (FGF21) ameliorates steatohepatitis but is increased in humans with fatty liver, potentially due to compensatory mechanisms and/or FGF21 resistance. Further, animal models suggest that GH increases serum FGF21. Tesamorelin, a growth hormone releasing hormone agonist, reduces liver fat in HIV-infected individuals. The objectives of this study were to investigate changes in FGF21 during tesamorelin treatment, to elucide the interplay between FGF21, GH augmentation, and liver fat reduction in humans...
October 7, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/29024325/dose-response-effects-of-p-synephrine-on-fat-oxidation-rate-during-exercise-of-increasing-intensity
#18
Jorge Gutiérrez-Hellín, Juan Del Coso
The aim of this investigation was to determine the effects different doses of p-synephrine on maximal fat oxidation during exercise. Seventeen healthy subjects volunteered to participate in a double-blind and randomised experimental design composed of four identical experimental trials. On four trials separated by 72 h, participants ingested a placebo or 1, 2 or 3 mg/kg of p-synephrine. After resting for 60 min to allow substance absorption, participants performed an exercise test of increasing intensity on a cycle ergometer while gas exchange was measured continuously...
October 11, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28986166/sildenafil-induces-browning-of-subcutaneous-white-adipose-tissue-in-overweight-adults
#19
Shuguang Li, Yixiang Li, Lin Xiang, Jing Dong, Min Liu, Guangda Xiang
OBJECTIVE: To investigate that short-term treatment of sildenafil can induce browning of subcutaneous white adipose tissue (sWAT) in human adults. DESIGN: A randomized, double-blinded, placebo-controlled, parallel group trial. METHODS: Sixteen eligibility overweight male subjects were recruited, comparing 100 mg/day sildenafil versus an identical placebo therapy for 7 days. sWAT samples were collected from subjects before and after 7-day sildenafil or placebo intervention...
October 3, 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28973578/identification-and-characterization-of-bmvta1-a-bombyx-mori-lepidoptera-bombycidae-homologue-for-vta1-that-is-up-regulated-in-development
#20
Hengchuan Xia, Dandan Shao, Xiaoyong Liu, Qiang Wang, Yang Zhou, Keping Chen
Vps20-associated 1 (Vta1) positively regulates Vacuolar protein sorting 4 (Vps4) to disassemble endosomal sorting complex required for transport III (ESCRT-III) for repeated uses in multivesicular body (MVB) pathway, virus budding and other processes. Currently, these proteins have mainly been studied in yeast and mammalian cells, while identities of them in insects remain largely unknown. We previously identified BmVps4, a Vps4 homologue from Bombyx mori. Here, we report the identification of a homologue for Vta1, designated as BmVta1...
May 1, 2017: Journal of Insect Science
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