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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/28645202/effects-of-mobility-and-multimorbidity-on-inpatient-and-post-acute-health-care-utilization
#2
Kristine E Ensrud, Li-Yung Lui, Lisa Langsetmo, Tien N Vo, Brent C Taylor, Peggy M Cawthon, Meredith L Kilgore, Charles E McCulloch, Jane A Cauley, Marcia L Stefanick, Kristine Yaffe, Eric S Orwoll, John T Schousboe
Background: This study examines effects of mobility and multimorbidity on hospitalization and inpatient and post-acute care (PAC) facility days among older men. Methods: Prospective study of 1701 men (mean age 79.3 years) participating in MrOS Study Year 7 (Y7) examination (2007-2008) linked with their Medicare claims. At Y7, mobility ascertained by usual gait speed and categorized as poor, intermediate, or good. Multimorbidity quantified by applying Elixhauser algorithm to inpatient and outpatient claims and categorized as none, mild-moderate, or high...
June 22, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28645195/mutational-biases-influence-parallel-adaptation
#3
Arlin Stoltzfus, David M McCandlish
While mutational biases strongly influence neutral molecular evolution, the role of mutational biases in shaping the course of adaptation is less clear. Here we consider the frequency of transitions relative to transversions among adaptive substitutions. Because mutation rates for transitions are higher than those for transversions, if mutational biases influence the dynamics of adaptation, then transitions should be over-represented among documented adaptive substitutions. To test this hypothesis, we assembled 2 sets of data on putatively adaptive amino acid replacements that have occurred in parallel during evolution, either in nature or in the laboratory...
June 22, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28645194/predictors-of-treatment-response-and-survival-outcomes-in-meningioma-recurrence-with-atypical-or-anaplastic-histology
#4
Muhammad O Chohan, Christopher T Ryan, Ranjodh Singh, Ryan M Lanning, Anne S Reiner, Marc K Rosenblum, Viviane Tabar, Philip H Gutin
BACKGROUND: Recurrence rates for atypical and anaplastic meningiomas range between 9% and 50% after gross total resection and between 36% and 83% after subtotal resection. Optimal treatment of recurrent meningiomas exhibiting atypical/anaplastic histology is complicated because they are often refractory to both surgery and radiation. OBJECTIVE: To evaluate clinical determinants of recurrence and treatment-specific outcomes in patients with recurrent meningiomas exhibiting atypical/anaplastic histology at our institution...
June 21, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28645191/how-effective-is-algorithm-guided-treatment-for-depressed-inpatients-results-from-the-randomized-controlled-multicenter-german-algorithm-project-3-trial
#5
Mazda Adli, Katja Wiethoff, Thomas C Baghai, Robert Fisher, Florian Seemüller, Gregor Laakmann, Peter Brieger, Joachim Cordes, Jaroslav Malevani, Gerd Laux, Iris Hauth, Hans-Jürgen Möller, Klaus-Thomas Kronmüller, Michael N Smolka, Peter Schlattmann, Maximilian Berger, Roland Ricken, Thomas J Stamm, Andreas Heinz, Michael Bauer
Background: Treatment algorithms are are considered as key to improve outcomes by enhancing the quality of care. This is the first randomized controlled study to evalutate the clinical effect of algorithm-guided treatment in inpatients with major depressive disorder (MDD). Methods: Inpatients, aged 18-70 years with MDD from 10 German psychiatric departments were randomized to 5 different treatment arms (from 2000 to 2005), three of which were standardized stepwise drug treatment algorithms (ALGO)...
June 22, 2017: International Journal of Neuropsychopharmacology
https://www.readbyqxmd.com/read/28645186/igf-i-gene-therapy-in-aging-rats-modulates-hippocampal-genes-relevant-to-memory-function
#6
Joaquín Pardo, Martin C Abba, Ezequiel Lacunza, Olalekan M Ogundele, Isabel Paiva, Gustavo R Morel, Tiago F Outeiro, Rodolfo G Goya
In rats, learning and memory performance decline during normal aging, which makes this rodent species a suitable model to evaluate therapeutic strategies. In aging rats, insulin-like growth factor-I (IGF-I), is known to significantly improve spatial memory accuracy as compared to control counterparts. A constellation of gene expression changes underlie the hippocampal phenotype of aging but no studies on the effects of IGF-I on the hippocampal transcriptome of old rodents have been documented. Here, we assessed the effects of IGF-I gene therapy on spatial memory performance in old female rats and compared them with changes in the hippocampal transcriptome...
June 22, 2017: Journals of Gerontology. Series A, Biological Sciences and Medical Sciences
https://www.readbyqxmd.com/read/28645181/the-clinical-benefits-of-perioperative-antioxidant-vitamin-therapy-in-patients-undergoing-cardiac-surgery-a-meta-analysis
#7
Jun Geng, Ju Qian, Weijun Si, Hao Cheng, Fuhai Ji, Zhenya Shen
The clinical benefits of perioperative antioxidant vitamin therapy in cardiac patients remain controversial. Here, we conducted a meta-analysis to determine the strength of the evidence supporting the perioperative use of antioxidant vitamins in patients undergoing cardiac surgery. We searched 4 databases (PubMed, EMBASE, Science Citation Index and Cochrane Library) for randomized controlled trials that reported the effects of antioxidant vitamin therapy on patients undergoing cardiac surgery until 6 June 2016...
June 22, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28645178/ecological-imperatives-for-aquatic-carbon-dioxide-concentrating-mechanisms
#8
Stephen C Maberly, Brigitte Gontero
In aquatic environments, the concentration of inorganic carbon is spatially and temporally variable and CO2 can be substantially oversaturated or depleted. Depletion of CO2 plus low rates of diffusion cause inorganic carbon to be more limiting in aquatic than terrestrial environments, and the frequency of species with a CO2-concentrating mechanism (CCM), and their contribution to productivity, is correspondingly greater. Aquatic photoautotrophs may have biochemical or biophysical CCMs and exploit CO2 from the sediment or the atmosphere...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28645175/perturbation-to-cholesterol-at-the-neuromuscular-junction-confers-botulinum-neurotoxin-a-sensitivity-to-neonatal-mice
#9
Baskaran Thyagarajan, Joseph G Potian, Joseph J McArdle, Padmamalini Baskaran
Botulinum neurotoxin A (BoNT/A) cleaves SNAP25 at the motor nerve terminals (MNT) and inhibits stimulus evoked acetylcholine release (SEAR). This causes skeletal muscle paralysis. However, younger neonatal mice (<P7; less than 7 days old) are resistant to the neuroparalytic effects of BoNT/A. That is, in vivo injection of BoNT/A at the innervations of Extensor digitorum longus (EDL) muscle in the hindlimbs inhibited the toe spread reflex within 24 hours following BoNT/A injection in adult mouse and in older (> P7) neonatal mice younger than 7 days-age remained unaffected by BoNT/A injection...
June 22, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28645169/heterodimerization-of-arabidopsis-calcium-proton-exchangers-contributes-to-regulation-of-guard-cell-dynamics-and-plant-defense-responses
#10
Bradleigh Hocking, Simon J Conn, Murli Manohar, Bo Xu, Asmini Athman, Matthew A Stancombe, Alex R Webb, Kendal D Hirschi, Matthew Gilliham
Arabidopsis thaliana cation exchangers (CAX1 and CAX3) are closely related tonoplast-localized calcium/proton (Ca2+/H+) antiporters that contribute to cellular Ca2+ homeostasis. CAX1 and CAX3 were previously shown to interact in yeast; however, the function of this complex in plants has remained elusive. Here, we demonstrate that expression of CAX1 and CAX3 occurs in guard cells. Additionally, CAX1 and CAX3 are co-expressed in mesophyll tissue in response to wounding or flg22 treatment, due to the induction of CAX3 expression...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28645161/lncrna-tug1-influences-papillary-thyroid-cancer-cell-proliferation-migration-and-emt-formation-through-targeting-mir-145
#11
Hongwei Lei, Yan Gao, Xiaoying Xu
LncRNA TUG1, a tumor oncogene associated with various human cancers, has been reported to be involved in regulating various cellular processes, such as proliferation, apoptosis and invasion through targeting multiple genes. However, its biological function in thyroid cancer cells has not been elucidated. The aim of this study is to measure TUG1 expression level and evaluate its function in thyroid cancer cells. LncRNA TUG1 expression levels in thyroid cancer tissues and three thyroid cancer cell lines (the ATC cell lines SW1736 and KAT18 and the FTC cell line FTC133) were assessed by qRT-PCR and compared with that of the human normal breast epithelial cell HGC-27...
June 22, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28645155/features-of-genomic-organization-in-a-nucleotide-resolution-molecular-model-of-the-escherichia-coli-chromosome
#12
William C Hacker, Shuxiang Li, Adrian H Elcock
We describe structural models of the Escherichia coli chromosome in which the positions of all 4.6 million nucleotides of each DNA strand are resolved. Models consistent with two basic chromosomal orientations, differing in their positioning of the origin of replication, have been constructed. In both types of model, the chromosome is partitioned into plectoneme-abundant and plectoneme-free regions, with plectoneme lengths and branching patterns matching experimental distributions, and with spatial distributions of highly-transcribed chromosomal regions matching recent experimental measurements of the distribution of RNA polymerases...
June 22, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28645148/a-soft-environmental-control-effect-of-apatite-doped-with-mineral-traces-in-the-fowl-droppings
#13
M Minamisawa, T Taniai, S Yoshida
Fowl-dropping apatite (Ca10-z[PO4]6-z[OH]2-z) synthesized from carbonized, incinerated fowl droppings contains PO4 and OH groups that are partially substituted by CO32- ions. It shows stronger ion conductivity than commercially available hydroxyapatite in a wide range of temperatures from 23°C to 800°C. Fowl-dropping apatite readily adsorbs NO2 and SO2 gases and, without re-releasing these gases, slowly decomposes them at room temperature under sunlight via ultraviolet-visible (UV-Vis) irradiation. A limited amount of minerals and organics contained in fowl droppings causes light-induced activities in fowl-dropping apatite with a crystal structure that has a developed c face; this initiates excitation-induced atomic transfer on the solid surface derived from PO4 exposed on the c face, which then advances the decomposition reaction...
June 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/28645145/systematic-procedures-to-promote-u-s-hiv-medication-adherence-via-photovoice
#14
Michelle Teti, Victoria Shaffer, Wilson Majee, Rose Farnan, Mary Gerkovich
Medication adherence is essential to promote the health of people living with HIV (PL-HIV) and prevent HIV transmission in the U.S. Novel medication health promotion interventions are needed that address patient-centeredness, understandability, and communication with providers. The aims of this article are to define the systematic stages we used to develop an effective health promotion intervention via the products (e.g. images and stories) of Photovoice. We designed an intervention to improve HIV adherence knowledge, attitudes, and communication with providers through Photovoice...
June 21, 2017: Health Promotion International
https://www.readbyqxmd.com/read/28645141/does-the-seed-bank-contribute-to-the-build-up-of-a-genetic-extinction-debt-in-the-grassland-perennial-campanula-rotundifolia
#15
Jan Plue, Katrien Vandepitte, Olivier Honnay, Sara A O Cousins
Background and Aims: Habitat fragmentation threatens global biodiversity. Many plant species persist in habitat fragments via persistent life cycle stages such as seed banks, generating a species extinction debt. Here, seed banks are hypothesized to cause a temporal delay in the expected loss of genetic variation, which can be referred to as a genetic extinction debt, as a possible mechanism behind species extinction debts. Methods: Fragmented grassland populations of Campanula rotundifolia were examined for evidence of a genetic extinction debt, investigating if the seed bank contributed to the extinction debt build-up...
June 21, 2017: Annals of Botany
https://www.readbyqxmd.com/read/28645138/correction-tumor-growth-suppressive-effect-of-il-4-through-p21-mediated-activation-of-stat6-in-il-4r%C3%AE-overexpressed-melanoma-models
#16
Hye Lim Lee, Mi Hee Park, Ju Kyoung Song, Yu Yeon Jung, Youngsoo Kim, Kyung Bo Kim, Dae Yeon Hwang, Do Young Yoon, Min Jong Song, Sang Bae Han, Jin Tae Hong
No abstract text is available yet for this article.
June 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/28645137/-to-take-or-not-to-take-the-association-between-perceived-addiction-risk-expected-analgesic-response-and-likelihood-of-trying-novel-pain-relievers-in-self-identified-chronic-pain-patients
#17
D Andrew Tompkins, Andrew S Huhn, Patrick S Johnson, Michael T Smith, Eric C Strain, Robert R Edwards, Matthew W Johnson
BACKGROUND AND AIMS: Probability discounting refers to the effect of outcome uncertainty on decision making. Using probability discounting, we examined the degree to which self-identified chronic pain patients (CPP) were likely to try a novel analgesic medication given increasing addiction risk. We postulated that propensity for opioid misuse, trait impulsivity, and previous opioid experience would be positively associated with likelihood of risky medication use. DESIGN: This cross-sectional online study determined state/trait associations with addiction-related medication decisions in CPP...
June 23, 2017: Addiction
https://www.readbyqxmd.com/read/28645134/-arterial-hyper-and-hypotension-associated-with-psychiatric-medications-a-risk-assessment-based-on-the-summaries-of-product-characteristics-smpcs
#18
Roland W Freudenmann, Ninja Freudenmann, Bartosz Zurowski, Carlos Schönfeldt-Lecuona, Ludwig Maier, Roland E Schmieder, Christian Lange-Asschenfeldt, Maximilian Gahr
Introduction Psychiatric medications are well-known triggers of clinically relevant blood pressure changes. Therefore, we aimed at creating ranking lists for their risk of causing arterial hyper- or hypotension. Methods We analyzed 784 Summaries of Product characteristics (SmPCs, available online from "Rote Liste" or "Gelbe Liste" websites) from 105 psychiatric medications registered in adult psychiatry in Germany and extracted the standardized reported risks of increasing or decreasing arterial blood pressure...
June 23, 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28645124/-paralytic-ileus-with-fatal-consequence-under-psychotropic%C3%A2-medication
#19
Ingo Runte, Ulrich Hamberger
In the area of Bielefeld there occurred a striking accumulation of four cases of death as a consequence of a paralytic ileus within a period of two years. All four patients suffered from a psychotic disorder and had taken psychotropic medication for many years. After exclusion of other causes, the anticholinergic effect of the psychotropic medication must be taken as the cause of death. A review of literature and pharmacological receptor profiles are presented. Therapeutic consequences are described in order to prevent more cases of death...
June 2017: Fortschritte der Neurologie-Psychiatrie
https://www.readbyqxmd.com/read/28645121/effect-of-obesity-on-gestational-and-perinatal-outcomes
#20
Sônia Regina Cabral Madi, Rosa Maria Rahmi Garcia, Vandrea Carla de Souza, Renato Luís Rombaldi, Breno Fauth de Araújo, José Mauro Madi
Purpose To assess the impact of pre-pregnancy obesity (body mass index [BMI] ≥ 30 kg/m(2)) on the gestational and perinatal outcomes. Methods Retrospective cohort study of 731 pregnant women with a BMI ≥ 30 kg/m(2) at the first prenatal care visit, comparing them with 3,161 women with a BMI between 18.5 kg/m(2) and 24.9 kg/m(2). Maternal and neonatal variables were assessed. Statistical analyses reporting the demographic features of the pregnant women (obese and normal) were performed with descriptive statistics followed by two-sided independent Student's t tests for the continuous variables, and the chi-squared (χ(2)) test, or Fisher's exact test, for the categorical variables...
June 23, 2017: Revista Brasileira de Ginecologia e Obstetrícia
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