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https://www.readbyqxmd.com/read/28074841/the-mito-damp-cardiolipin-blocks-il-10-production-causing-persistent-inflammation-during-bacterial-pneumonia
#1
Krishnendu Chakraborty, Mahesh Raundhal, Bill B Chen, Christina Morse, Yulia Y Tyurina, Anupriya Khare, Timothy B Oriss, Rachael Huff, Janet S Lee, Claudette M St Croix, Simon Watkins, Rama K Mallampalli, Valerian E Kagan, Anuradha Ray, Prabir Ray
Bacterial pneumonia is a significant healthcare burden worldwide. Failure to resolve inflammation after infection precipitates lung injury and an increase in morbidity and mortality. Gram-negative bacteria are common in pneumonia and increased levels of the mito-damage-associated molecular pattern (DAMP) cardiolipin can be detected in the lungs. Here we show that mice infected with Klebsiella pneumoniae develop lung injury with accumulation of cardiolipin. Cardiolipin inhibits resolution of inflammation by suppressing production of anti-inflammatory IL-10 by lung CD11b(+)Ly6G(int)Ly6C(lo)F4/80(+) cells...
January 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28039782/reduced-sensitivity-to-social-priors-during-action-prediction-in-adults-with-autism-spectrum-disorders
#2
Valerian Chambon, Chlöé Farrer, Elisabeth Pacherie, Pierre O Jacquet, Marion Leboyer, Tiziana Zalla
An extensive amount of evidence has documented a diminished ability to predict and understand other people's action in individuals with autism spectrum disorders (ASD). Recently, two theoretical accounts, the "Hypo-priors" and the "Aberrant precision" hypotheses, have suggested that attenuated Bayesian priors or an imbalance of the precision ascribed to sensory evidence relative to prior expectations may be responsible for the atypical perceptual experience and difficulties with action understanding in ASD...
December 28, 2016: Cognition
https://www.readbyqxmd.com/read/27982579/lipidomics-characterization-of-biosynthetic-and-remodeling-pathways-of-cardiolipins-in-genetically-and-nutritionally-manipulated-yeast-cells
#3
Yulia Y Tyurina, Wenjia Lou, Feng Qu, Vladimir A Tyurin, Dariush Mohammadyani, Jenney Liu, Maik Hüttemann, Michael A Frasso, Peter Wipf, Hülya Bayir, Miriam L Greenberg, Valerian E Kagan
Cardioipins (CLs) are unique tetra-acylated phospholipids of mitochondria and define the bioenergetics and regulatory functions of these organelles. An unresolved paradox is the high uniformity of CL molecular species (tetra-linoleoyl-CL) in the heart, liver, and skeletal muscles-in contrast to their high diversification in the brain. Here, we combined liquid chromatography-mass-spectrometry-based phospholipidomics with genetic and nutritional manipulations to explore CLs' biosynthetic vs postsynthetic remodeling processes in S...
December 16, 2016: ACS Chemical Biology
https://www.readbyqxmd.com/read/27976277/quality-control-of-valerian-products-by-hplc-fingerprint-analysis
#4
E M Gonulalan, E Nemutlu, L O Demirezer
No abstract text is available yet for this article.
December 2016: Planta Medica
https://www.readbyqxmd.com/read/27935971/costs-of-care-of-hiv-infected-children-initiating-lopinavir-ritonavir-based-antiretroviral-therapy-before-the-age-of-two-in-cote-d-ivoire
#5
Sophie Desmonde, Divine Avit, Junie Petit, Madeleine Amorissani Folquet, Francois Tanoh Eboua, Clarisse Amani Bosse, Evelyne Dainguy, Véronique Mea, Marguerite Timite-Konan, Sylvie Ngbeché, Andrea Ciaranello, Valeriane Leroy
OBJECTIVES: To access the costs of care for Ivoirian children before and after initiating LPV/r-based antiretroviral therapy (ART) before the age of two. METHODS: We assessed the direct costs of care for all HIV-infected children over the first 12 months on LPV/r-based ART initiated <2 years of age in Abidjan. We recorded all drug prescriptions, ART and cotrimoxazole prophylaxis delivery, medical analyses/examinations and hospital admissions. We compared these costs to those accrued in the month prior to ART initiation...
2016: PloS One
https://www.readbyqxmd.com/read/27930403/has-the-phasing-out-of-stavudine-in-accordance-with-changes-in-who-guidelines-led-to-a-decrease-in-single-drug-substitutions-in-first-line-antiretroviral-therapy-for-hiv-in-sub-saharan-africa
#6
Alana T Brennan, Mary-Ann Davies, Jacob Bor, Gilles Wandeler, Kathryn Stinson, Robin Wood, Hans Prozesky, Frank Tanser, Geoffrey Fatti, Andrew Boulle, Izukanji Sikazwe, Kara Wools-Kaloustian, Constantin Yiannoutsos, Valériane Leroy, Nathalie de Rekeneire, Matthew P Fox
OBJECTIVE: We assessed the relationship between phasing out stavudine in first-line antiretroviral therapy (ART) in accordance with WHO 2010 policy and single-drug substitutions (SDS) (substituting the nucleoside reverse transcriptase inhibitor in first-line ART) in sub-Saharan Africa. DESIGN: Prospective cohort analysis (International epidemiological Databases to Evaluate AIDS-Multiregional) including ART-naive, HIV-infected patients aged at least 16 years, initiating ART between January 2005 and December 2012...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27898089/polarisation-independent-silicon-on-insulator-slot-waveguides
#7
Valerian Hongjie Chen, Jun Rong Ong, Ching Eng Png
The minimisation of birefringence, or polarisation mode dispersion, is vital for simplifying and miniaturising photonic components. In this work, we present a systematic study of the slot waveguide geometries required for having zero birefringence (ZB). We show that the rail widths required for ZB are more strongly dependent on the height of the waveguide than on the slot separation. After which, we demonstrate that the ZB geometry is significantly affected by the slanting of the waveguide walls. This paper proceeds to show that within the range studied, one can fix the height, slot, slant angle, and bend radius, and still achieve ZB by varying the widths of both of the rails...
November 29, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27850378/740-inhibition-of-ferroptosis-as-a-neuroprotective-strategy-following-traumatic-brain-injury
#8
Elizabeth Kenny, Qin Yang, Emin Fidan, Lee Ann New, Tamil Selvan Anthonymuthu, Patrick Kochanek, Valerian Kagan, Hulya Bayir
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27794421/a-topical-mitochondria-targeted-redox-cycling-nitroxide-mitigates-oxidative-stress-induced-skin-damage
#9
Rhonda M Brand, Michael W Epperly, J Mark Stottlemyer, Erin M Skoda, Xiang Gao, Song Li, Saiful Huq, Peter Wipf, Valerian E Kagan, Joel S Greenberger, Louis D Falo
Skin is the largest human organ, and it provides a first line of defense that includes physical, chemical, and immune mechanisms to combat environmental stress. Radiation is a prevalent environmental stressor. Radiation-induced skin damage ranges from photoaging and cutaneous carcinogenesis caused by UV exposure, to treatment-limiting radiation dermatitis associated with radiotherapy, to cutaneous radiation syndrome, a frequently fatal consequence of exposures from nuclear accidents. The major mechanism of skin injury common to these exposures is radiation-induced oxidative stress...
October 26, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/27780544/isolation-of-human-trophoblastic-extracellular-vesicles-and-characterization-of-their-cargo-and-antiviral-activity
#10
Yingshi Ouyang, Avraham Bayer, Tianjiao Chu, Vladimir A Tyurin, Valerian E Kagan, Adrian E Morelli, Carolyn B Coyne, Yoel Sadovsky
INTRODUCTION: Primary human trophoblasts release a repertoire of extracellular vesicles (EVs). Among them are nano-sized exosomes, which we found to suppress the replication of a wide range of diverse viruses. These exosomes contain trophoblastic microRNAs (miRNAs) that are expressed from the chromosome 19 miRNA cluster and exhibit antiviral properties. Here, we report our investigation of the cargo of placental EVs, focusing on the composition and the antiviral properties of exosomes, microvesicles, and apoptotic blebs...
November 2016: Placenta
https://www.readbyqxmd.com/read/27776039/has-the-phasing-out-of-stavudine-in-accordance-with-changes-in-who-guidelines-led-to-a-decrease-in-single-drug-substitutions-in-first-line-antiretroviral-therapy-for-hiv-in-sub-saharan-africa
#11
Alana T Brennan, Mary-Ann Davies, Jacob Bor, Gilles Wandeler, Kathryn Stinson, Robin Wood, Hans Prozesky, Frank Tanser, Geoffrey Fatti, Andrew Boulle, Izukanji Sikazwe, Kara Wool-Kaloustian, Constantin Yuannoutsos, Valériane Leroy, Nathalie de Rekeneire, Matthew P Fox
OBJECTIVE: We assessed the relationship between phasing out stavudine in first-line antiretroviral therapy (ART) in accordance with WHO 2010 policy and single-drug substitutions (SDS) (substituting the nucleoside reverse transcriptase inhibitor in first-line ART) in sub-Saharan Africa. DESIGN: Prospective cohort analysis (International epidemiological Databases to Evaluate AIDS-Multiregional) including ART-naive, HIV-infected patients aged at least 16 years, initiating ART between January 2005 and December 2012...
January 2, 2017: AIDS
https://www.readbyqxmd.com/read/27771032/complications-and-surgical-outcomes-after-interhospital-transfer-vs-direct-admission-in-colorectal-surgery-a-national-surgical-quality-improvement-program-analysis
#12
Stephen P Sharp, Ashar Ata, Brian T Valerian, Jonathan J Canete, A David Chismark, Edward C Lee
BACKGROUND: Interhospital transfer is common among patients undergoing colorectal surgery. The purpose of this study was to determine surgical outcomes after transfer vs direct admission in patients undergoing colorectal surgery. METHODS: The American College of Surgeons National Surgical Quality Improvement Program database from 2010 to 2012 was used. Colorectal operations were selected, including both emergency and nonemergency cases. Transfers were compared with direct admissions using a complex comorbidity analysis model...
September 2, 2016: American Journal of Surgery
https://www.readbyqxmd.com/read/27758862/phosphorylation-of-cytochrome-c-threonine-28-regulates-electron-transport-chain-activity-in-kidney-implications-for-amp-kinase
#13
Gargi Mahapatra, Ashwathy Varughese, Qinqin Ji, Icksoo Lee, Jenney Liu, Asmita Vaishnav, Christopher Sinkler, Alexandr A Kapralov, Carlos T Moraes, Thomas H Sanderson, Timothy L Stemmler, Lawrence I Grossman, Valerian E Kagan, Joseph S Brunzelle, Arthur R Salomon, Brian F P Edwards, Maik Hüttemann
Mammalian cytochrome c (Cytc) plays a key role in cellular life and death decisions, functioning as an electron carrier in the electron transport chain and as a trigger of apoptosis when released from the mitochondria. However, its regulation is not well understood. We show that the major fraction of Cytc isolated from kidneys is phosphorylated on Thr(28), leading to a partial inhibition of respiration in the reaction with cytochrome c oxidase. To further study the effect of Cytc phosphorylation in vitro, we generated T28E phosphomimetic Cytc, revealing superior behavior regarding protein stability and its ability to degrade reactive oxygen species compared with wild-type unphosphorylated Cytc Introduction of T28E phosphomimetic Cytc into Cytc knock-out cells shows that intact cell respiration, mitochondrial membrane potential (ΔΨm), and ROS levels are reduced compared with wild type...
January 6, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/27751669/review-of-safety-and-efficacy-of-sleep-medicines-in-older-adults
#14
REVIEW
Jennifer L Schroeck, James Ford, Erin L Conway, Kari E Kurtzhalts, Megan E Gee, Krista A Vollmer, Kari A Mergenhagen
PURPOSE: Insomnia is problematic for older adults. After behavioral modifications fail to show adequate response, pharmacologic options are used. The pharmacokinetics of agents used to treat insomnia may be altered. This review focuses on the safety and efficacy of medications used to treat insomnia. METHODS: A literature search of Medline, PubMed, and Embase was conducted (January 1966-June 2016). It included systematic reviews, randomized controlled trials, observational studies, and case series that had an emphasis on insomnia in an older population...
November 2016: Clinical Therapeutics
https://www.readbyqxmd.com/read/27736105/individual-differences-in-the-impact-of-vicarious-racism-african-american-students-react-to-the-george-zimmerman-trial
#15
Tyler B Mason, Ralitsa S Maduro, Valerian J Derlega, Desi S Hacker, Barbara A Winstead, Jacqueline E Haywood
Objective: This research focused on how race-based rejection sensitivity (RS-Race) and components of racial identity intensify negative psychological reactions to an incident of vicarious racism. We examined how these individual difference variables directly and/or indirectly predicted African American students' reactions to the trial of George Zimmerman in the killing of the African American teenager, Trayvon Martin. Method: In Study 1, 471 African American students completed measures of RS-Race, thought intrusions about the Zimmerman trial, and outcome variables (negative affect about the Zimmerman trial and forgiveness for Mr...
October 13, 2016: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/27716731/health-and-survival-of-hiv-perinatally-exposed-but-uninfected-children-born-to-hiv-infected-mothers
#16
Sophie Desmonde, Tessa Goetghebuer, Claire Thorne, Valériane Leroy
PURPOSE OF REVIEW: The number of HIV-exposed but uninfected (HEU) infants exposed to both HIV and multiple antiretroviral drugs in utero and during prolonged breastfeeding is increasing in low-income countries where HIV prevalence is the highest. We review recent evidence on the effects of perinatal/postnatal exposure to maternal HIV and combined antiretroviral therapy (cART) on health outcomes of HEU children (mitochondrial and metabolic toxicity, adverse pregnancy outcomes, neurodevelopment, growth, infectious morbidity, and mortality)...
September 2016: Current Opinion in HIV and AIDS
https://www.readbyqxmd.com/read/27693574/hybrid-transvaginal-notes-nephrectomy-postoperative-sexual-outcomes-a-three-center-matched-study
#17
Salvatore Butticè, Tarik Emre Sener, Valerian Ciprian Lucan, Luca Lunelli, Antonio Simone Laganà, Salvatore Giovanni Vitale, Christopher Netsch, Yiloren Tanidir, Rosa Pappalardo, Carlo Magno
OBJECTIVE: To evaluate our experience in patients undergoing hybrid transvaginal natural orifices transluminal endoscopic surgery (NOTES) nephrectomy and evaluate the sexual functions in the postoperative period. MATERIALS AND METHODS: Prospective data of 71 patients with renal tumors who underwent hybrid NOTES radical nephrectomy in three different centers were collected from March 2010 to October 2015. Patient and surgical characteristics were recorded. Sexual function was evaluated using the Female Sexual Function Index questionnaire the day prior to the operation and 3 months after...
January 2017: Urology
https://www.readbyqxmd.com/read/27689202/gastrointestinal-side-effects-of-post-transplant-therapy
#18
REVIEW
Valerian Ciprian Lucan, Luisa Berardinelli
Modern immunosuppressive therapy has produced a real revolution in renal and organ transplantation but it comes with the price of multiple side effects. There are many gastrointestinal (GI) complications that are the consequence of transplant immunosuppressant medication. In fact, for any immunosuppressant therapy, certain standardized precepts and attitudes that aim to reduce the incidence and the impact of the medication side effects must be applied. Many patients undergo renal transplantation and the physicians have to be aware of the advantages and the risks associated...
September 2016: Journal of Gastrointestinal and Liver Diseases: JGLD
https://www.readbyqxmd.com/read/27683817/cd36-provides-host-protection-against-klebsiella-pneumoniae-intrapulmonary-infection-by-enhancing-lipopolysaccharide-responsiveness-and-macrophage-phagocytosis
#19
Tolani F Olonisakin, Huihua Li, Zeyu Xiong, Elizabeth J K Kochman, Minting Yu, Yanyan Qu, Mei Hulver, Jay K Kolls, Claudette St Croix, Yohei Doi, Minh-Hong Nguyen, Robert M Q Shanks, Rama K Mallampalli, Valerian E Kagan, Anuradha Ray, Roy L Silverstein, Prabir Ray, Janet S Lee
Klebsiella pneumoniae remains an important cause of intrapulmonary infection and invasive disease worldwide. K. pneumoniae can evade serum killing and phagocytosis primarily through the expression of a polysaccharide capsule, but its pathogenicity is also influenced by host factors. We examined whether CD36, a scavenger receptor that recognizes pathogen and modified self ligands, is a host determinant of K. pneumoniae pathogenicity. Despite differences in serum sensitivity and virulence of 3 distinct K. pneumoniae (hypermucoviscous K1, research K2, and carbapenemase-producing ST258) strains, the absence of CD36 significantly increased host susceptibility to acute intrapulmonary infection by K...
December 15, 2016: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27681079/acute-severe-hyponatraemia-secondary-to-polydipsia-and-associated-herbal-remedy-use
#20
Oliver T R Toovey, Ian R Edmond, Nikolaos Makris
A 47-year-old woman presented with seizures secondary to euvolaemic hyponatraemia. A collateral history revealed recent increased oral fluid intake and increased use of herbal remedies including valerian root over the New Year period. There was no history of psychiatric disease to support psychogenic polydipsia. She responded to careful sodium replacement in the intensive care unit and was discharged with no neurological sequelae.
2016: BMJ Case Reports
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