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https://www.readbyqxmd.com/read/28645211/akr1c3-mediated-adipose-androgen-generation-drives-lipotoxicity-in-women-with-polycystic-ovary-syndrome
#1
Michael W O'Reilly, Punith Kempegowda, Mark Walsh, Angela E Taylor, Konstantinos N Manolopoulos, J William Allwood, Robert K Semple, Daniel Hebenstreit, Warwick B Dunn, Jeremy W Tomlinson, Wiebke Arlt
Context: Polycystic ovary syndrome (PCOS) is a prevalent metabolic disorder, occurring in up to 10% of women of reproductive age. PCOS is associated with insulin resistance and cardiovascular risk. Androgen excess is a defining feature of PCOS and has been suggested as causally associated with insulin resistance; however, mechanistic evidence linking both is lacking. We hypothesized that adipose tissue is an important site linking androgen activation and metabolic dysfunction in PCOS...
June 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28645180/alcohol-metabolism-and-oesophageal-cancer-a-systematic-review-of-the-evidence
#2
Marco Matejcic, M J Gunter, Pietro Ferrari
Alcohol is a major risk factor for oesophageal squamous cell carcinoma (OSCC), the most prevalent histological subtype of oesophageal cancer (OC) worldwide. The metabolism of alcohol is regulated by specific enzymes whose activity and expression is influenced by genetic polymorphisms. We conducted a systematic review of current epidemiological evidence of the relationship between alcohol intake and OC risk, including the role of tobacco smoking and functional polymorphisms of dehydrogenases (ADHs) and aldehyde dehydrogenases (ALDHs)...
June 22, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28645153/defective-mitochondrial-rna-processing-due-to-pnpt1-variants-causes-leigh-syndrome
#3
Sanna Matilainen, Christopher J Carroll, Uwe Richter, Liliya Euro, Max Pohjanpelto, Anders Paetau, Pirjo Isohanni, Anu Suomalainen
Leigh syndrome is a severe infantile encephalopathy with an exceptionally variable genetic background. We studied the exome of a child manifesting with Leigh syndrome at one month of age and progressing to death by the age of 2.4 years, and identified novel compound heterozygous variants in PNPT1, encoding the polynucleotide phosphorylase (PNPase). Expression of the wild type PNPT1 in the subject's myoblasts functionally complemented the defects, and the pathogenicity was further supported by structural predictions and protein and RNA analyses...
June 22, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28645018/take-over-performance-in-evasive-manoeuvres
#4
Riender Happee, Christian Gold, Jonas Radlmayr, Sebastian Hergeth, Klaus Bengler
We investigated after effects of automation in take-over scenarios in a high-end moving-base driving simulator. Drivers performed evasive manoeuvres encountering a blocked lane in highway driving. We compared the performance of drivers 1) during manual driving, 2) after automated driving with eyes on the road while performing the cognitively demanding n-back task, and 3) after automated driving with eyes off the road performing the visually demanding SuRT task. Both minimum time to collision (TTC) and minimum clearance towards the obstacle disclosed a substantial number of near miss events and are regarded as valuable surrogate safety metrics in evasive manoeuvres...
June 20, 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/28643305/-interventional-therapy-of-colorectal-liver-metastasis
#5
Qi Zhang, Gaojun Teng
Colorectal liver metastasis (CRLM) is one of the most difficult and key points in the treatment of colorectal cancer. Approximately 50% to 60% of patients diagnosed as colorectal cancer develops metastasis, and 80% to 90% of CRLM is unresectable. Surgical resection is the first-line treatment for CRLM, while it is only suitable for about 15% patients. Systemic chemotherapy can prolong the survival of CRLM patients, however, a part of CRLM patients are resistant to chemotherapy. With the development of technology and the update of clinical evidence, individual therapy with target drugs and multidisciplinary treatment (MDT) have became a tendency, and minimally invasive interventional therapy has gained more acceptance in the MDT mode of the treatment for CRLM...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643202/specific-igm-and-regulation-of-antibody-responses
#6
Anna Sörman, Birgitta Heyman
Specific IgM, administered together with the antigen it recognizes, enhances primary antibody responses, formation of germinal centers, and priming for secondary antibody responses. The response to all epitopes on the antigen to which IgM binds is usually enhanced. IgM preferentially enhances responses to large antigens such as erythrocytes, malaria parasites, and keyhole limpet hemocyanine. In order for an effect to be seen, antigens must be administered in suboptimal concentrations and in close temporal relationship to the IgM...
June 23, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28643089/time-lapse-observation-and-transcriptome-analysis-of-a-case-with-repeated-multiple-pronuclei-after-ivf-icsi
#7
J Dai, L Z Leng, C F Lu, F Gong, S P Zhang, W Zheng, G X Lu, G Lin
PURPOSE: The purpose of this study was to investigate the cause of repeated multipronucleus (MPN) formation in zygotes in a patient after both in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI). METHOD: This is a case study. A patient had unexplained primary infertility with recurring total MPN zygotes after IVF and ICSI cycles. Time-lapse monitoring of pronucleus formation was carried out. Embryos developed from MPN zygotes were analyzed by fluorescence in situ hybridization (FISH)...
June 22, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28642775/ectopic-expression-of-the-grape-hyacinth-muscari-armeniacum-r2r3-myb-transcription-factor-gene-maan2-induces-anthocyanin-accumulation-in-tobacco
#8
Kaili Chen, Hongli Liu, Qian Lou, Yali Liu
Anthocyanins are responsible for the different colors of ornamental plants. Grape hyacinth (Muscari armeniacum), a monocot plant with bulbous flowers, is popular for its fascinating blue color. In the present study, we functionally characterized an R2R3-MYB transcription factor gene MaAN2 from M. armeniacum. Our results indicated that MaAN2 participates in controlling anthocyanin biosynthesis. Sequence alignment and phylogenetic analysis suggested that MaAN2 belonged to the R2R3-MYB family AN2 subgroup. The anthocyanin accumulation of grape hyacinth flowers was positively correlated with the expression of MaAN2...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28642680/weight-bearing-over-ground-stepping-in-an-exoskeleton-with-non-invasive-spinal-cord-neuromodulation-after-motor-complete-paraplegia
#9
Parag Gad, Yury Gerasimenko, Sharon Zdunowski, Amanda Turner, Dimitry Sayenko, Daniel C Lu, V Reggie Edgerton
We asked whether coordinated voluntary movement of the lower limbs could be regained in an individual having been completely paralyzed (>4 year) and completely absent of vision (>15 year) using two novel strategies-transcutaneous electrical spinal cord stimulation at selected sites over the spine as well as pharmacological neuromodulation by buspirone. We also asked whether these neuromodulatory strategies could facilitate stepping assisted by an exoskeleton (EKSO, EKSO Bionics, CA) that is designed so that the subject can voluntarily complement the work being performed by the exoskeleton...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28642550/cytokines-regulate-complement-receptor-immunoglobulin-expression-and-phagocytosis-of-candida-albicans-in-human-macrophages-a-control-point-in-anti-microbial-immunity
#10
Usma Munawara, Annabelle G Small, Alex Quach, Nick N Gorgani, Catherine A Abbott, Antonio Ferrante
Complement Receptor Immunoglobulin (CRIg), selectively expressed by macrophages, plays an important role in innate immunity by promoting phagocytosis of bacteria. Thus modulation of CRIg on macrophages by cytokines can be an important mechanism by which cytokines regulate anti-microbial immunity. The effects of the cytokines, tumor necrosis factor, transforming growth factor-β1, interferon-γ, interleukin (IL)-4, IL-13, IL-10, IL-1β, IL-6, lymphotoxin-α, macrophage-colony stimulating factor (M-CSF) and GM-CSF on CRIg expression were examined in human macrophages...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642464/serum-c3-and-renal-outcome-in-patients-with-primary-focal-segmental-glomerulosclerosis
#11
Jian Liu, Jingyuan Xie, Xiaoyan Zhang, Jun Tong, Xu Hao, Hong Ren, Weiming Wang, Nan Chen
The role of complement (C) in the pathogenesis or progression of focal segmental glomerulosclerosis (FSGS) is uncertain. The present study assessed the relationship between serum C3, the baseline characteristics, and the progression of FSGS in the cohort and identified the clinical implications of serum C3 levels in patients with FSGS. Compared to the patients with C3 ≥ 85 mg/dL (N = 474), those with C3 < 85 mg/dL (N = 117) presented a higher level of serum creatinine, lower levels of eGFR, hemoglobin, proteinuria, triglyceride, cholesterol, IgA, as well as, severe tubulointerstitial injury (TI)...
June 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28642093/functional-characterization-of-3-ketosteroid-9%C3%AE-hydroxylases-in-rhodococcus-ruber-strain-chol-4
#12
Govinda Guevara, Laura Fernández de Las Heras, Julián Perera, Juana María Navarro Llorens
The 3-Ketosteroid-9α-Hydroxylase, also known as KshAB [androsta-1,4-diene-3,17-dione, NADH:oxygen oxidoreductase (9α-hydroxylating); EC 1.14.13.142)], is a key enzyme in the general scheme of the bacterial steroid catabolism in combination with a 3-ketosteroid-Δ(1)-dehydrogenase activity (KstD), being both responsible of the steroid nucleus (rings A/B) breakage. KshAB initiates the opening of the steroid ring by the 9α-hydroxylation of the C9 carbon of 4-ene-3-oxosteroids (e.g. AD) or 1,4-diene-3-oxosteroids (e...
June 19, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28641931/transfer-of-antibiotic-resistance-in-staphylococcus-aureus
#13
REVIEW
Jakob Haaber, José R Penadés, Hanne Ingmer
Staphylococcus aureus is a serious human pathogen with remarkable adaptive powers. Antibiotic-resistant clones rapidly emerge mainly by acquisition of antibiotic-resistance genes from other S. aureus strains or even from other genera. Transfer is mediated by a diverse complement of mobile genetic elements and occurs primarily by conjugation or bacteriophage transduction, with the latter traditionally being perceived as the primary route. Recent work on conjugation and transduction suggests that transfer by these mechanisms may be more extensive than previously thought, in terms of the range of plasmids that can be transferred by conjugation and the efficiency with which transduction occurs...
June 19, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28641817/-preventing-violence-in-schizophrenia-with-cognitive-remediation
#14
C Darmedru, C Demily, N Franck
OBJECTIVES: The association between schizophrenia and violence represents an important issue in psychiatry. Often highly publicized, violent acts raise the question of their detection, prevention, management and treatment. There is no single, direct and exclusive link between aggressiveness and the underlying psychiatric disorder. On the contrary, the processes underlying this violence are multiple and interlinked. In addition to static and dynamic risk factors, cognitive deficits play an important role in the genesis and maintenance of violent and aggressive behavior...
June 19, 2017: L'Encéphale
https://www.readbyqxmd.com/read/28641515/the-development-of-stem-cell-based-treatment-for-liver-failure
#15
Tiantian Zhu, Yuwen Li, Yusheng Guo, Chuanlong Zhu
Liver failure is a devastating clinical syndrome with a persistently mortality rate despite advanced care. According to the pathological histology, hepatic failure was divided into four categories: acute liver failure (ALF), subacute liver failure (SALF), acute - on - chronic liver failure (ACLF) and chronic liver failure (CLF). Orthotopic liver transplantation protected patients from hepatic failure. Yet, limitations including postoperative complications, high costs, and shortages of donor organs defect its application...
June 15, 2017: Current Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28641277/association-of-the-cfh-y402h-polymorphism-with-the-1-year-response-of-exudative-amd-to-intravitreal-anti-vegf-treatment-in-the-brazilian-population
#16
Flavio Mac Cord Medina, Augusto Alves Lopes da Motta, Walter Yukihiko Takahashi, Pedro Carlos Carricondo, Mario Martins Dos Santos Motta, Monica B Melo, Jose Paulo C Vasconcellos
AIM: Evidence of the relationship between the polymorphism of the complement factor H (CFH) gene at position 402 (Y402H) and the response to the treatment of wet AMD is controversial. The aim of this study was to compare the functional and morphological 1-year evolution of patients with exudative AMD treated with antivascular endothelial growth factor (VEGF) drugs with the CFH Y402H polymorphism in the Brazilian population. METHODS: Forty-six patients treated for wet AMD with bevacizumab or ranibizumab in a pro re nata regimen were included...
June 23, 2017: Ophthalmic Research
https://www.readbyqxmd.com/read/28641261/robust-web-image-annotation-via-exploring-multi-facet-and-structural-knowledge
#17
Mengqiu Hu, Yang Yang, Fumin Shen, Luming Zhang, Heng Tao Shen, Xuelong Li
Driven by the rapid development of Internet and digital technologies, we have witnessed the explosive growth of Web images in recent years. Seeing that labels can reflect the semantic contents of the images, automatic image annotation, which can further facilitate the procedure of image semantic indexing, retrieval and other image management tasks, has become one of the most crucial research directions in multimedia. Most of the existing annotation methods heavily rely on well-labeled training data (expensive to collect) and/or single view of visual features (insufficient representative power)...
June 19, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28641140/effect-of-c1-inh-on-ischemia-reperfusion-injury-in-a-porcine-limb-ex-vivo-perfusion-model
#18
Mai M Abdelhafez, Jane Shaw, Damian Sutter, Jonas Schnider, Yara Banz, Hansjörg Jenni, Esther Voegelin, Mihai A Constantinescu, Robert Rieben
Revascularization of an amputated limb within 4-6h is essential to avoid extensive ischemia/reperfusion (I/R) injury leading to vascular leakage, edema and tissue necrosis. I/R injury is a pathological inflammatory condition that occurs during reperfusion of an organ or tissue after prolonged ischemia. It is characterized by a complex crosstalk between endothelial cell activation and the activation of plasma cascades. Vasculoprotective pharmacological intervention to prevent I/R injury might be an option to prolong the time window between limb amputation and successful replantation...
June 19, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28640886/epigenomic-diversification-within-the-genus-lupinus
#19
Karolina Susek, Agnieszka Braszewska-Zalewska, Adam J Bewick, Robert Hasterok, Robert J Schmitz, Barbara Naganowska
Deciphering the various chemical modifications of both DNA and the histone compound of chromatin not only leads to a better understanding of the genome-wide organisation of epigenetic landmarks and their impact on gene expression but may also provide some insights into the evolutionary processes. Although both histone modifications and DNA methylation have been widely investigated in various plant genomes, here we present the first study for the genus Lupinus. Lupins, which are members of grain legumes (pulses), are beneficial for food security, nutrition, health and the environment...
2017: PloS One
https://www.readbyqxmd.com/read/28640789/complement-mediated-enhancement-of-monocyte-adhesion-to-endothelial-cells-by-hla-antibodies-and-blockade-by-a-specific-inhibitor-of-the-classical-complement-cascade-tnt003
#20
Nicole M Valenzuela, Kimberly A Thomas, Arend Mulder, Graham C Parry, Sandip Panicker, Elaine F Reed
BACKGROUND: Antibody-mediated rejection (AMR) of most solid organs is characterized by evidence of complement activation and/or intragraft macrophages (C4d + and CD68+ biopsies). We previously demonstrated that crosslinking of HLA I by antibodies triggered endothelial activation and monocyte adhesion. We hypothesized that activation of the classical complement pathway at the endothelial cell surface by HLA antibodies would enhance monocyte adhesion through soluble split product generation, in parallel with direct endothelial activation downstream of HLA signaling...
July 2017: Transplantation
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