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https://www.readbyqxmd.com/read/28088023/a-novel-model-to-predict-gas-phase-hydroxyl-radical-oxidation-kinetics-of-polychlorinated-compounds
#1
Shuang Luo, Zongsu Wei, Richard Spinney, Zhihui Yang, Liyuan Chai, Ruiyang Xiao
In this study, a novel model based on aromatic meta-substituent grouping was presented to predict the second-order rate constants (k) for OH oxidation of PCBs in gas-phase. Since the oxidation kinetics are dependent on the chlorination degree and position, we hypothesized that it may be more accurate for k value prediction if we group PCB congeners based on substitution positions (i.e., ortho (o), meta (m), and para (p)). To test this hypothesis, we examined the correlation of polarizability (α), a quantum chemical based descriptor for k values, with an empirical Hammett constant (σ(+)) on each substitution position...
January 4, 2017: Chemosphere
https://www.readbyqxmd.com/read/28087545/predictors-of-public-support-for-nutrition-focused-policy-systems-and-environmental-change-strategies-in-los-angeles-county-2013
#2
Brenda Robles, Tony Kuo
BACKGROUND: Since 2010, federal and local agencies have invested broadly in a variety of nutrition-focused policy, systems and environmental change (PSE) initiatives in Los Angeles County (LAC). To date, little is known about whether the public supports such efforts. We address this gap in the literature by examining predictors of support for a variety of PSEs. METHODS: Voters residing in LAC (n=1007) were randomly selected to participate in a cross-sectional telephone survey commissioned by the LAC Department of Public Health...
January 13, 2017: BMJ Open
https://www.readbyqxmd.com/read/28087322/cutaneous-exposure-to-vesicant-phosgene-oxime-acute-effects-on-the-skin-and-systemic-toxicity
#3
Neera Tewari-Singh, Dinesh G Goswami, Rama Kant, Claire R Croutch, Robert P Casillas, David J Orlicky, Rajesh Agarwal
Phosgene Oxime (CX), an urticant or nettle agent categorized as a vesicant, is a potential chemical warfare and terrorist weapon. Its exposure can result in widespread and devastating effects including high mortality due to its fast penetration and ability to cause immediate severe cutaneous injury. It is one of the least studied chemical warfare agents with no effective therapy available. Thus, our goal was to examine the acute effects of CX following its cutaneous exposure in SKH-1 hairless mice to help establish a relevant injury model...
January 10, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28081449/diabetes-diagnostic-thresholds-of-the-glycated-hemoglobin-a1c-and-fasting-plasma-glucose-levels-considering-the-5-year-incidence-of-retinopathy
#4
Tomoko Nakagami, Kanako Takahashi, Chikako Suto, Junko Oya, Yuki Tanaka, Moritoshi Kurita, Chisato Isago, Yukiko Hasegawa, Arata Ito, Yasuko Uchigata
AIMS: As retinopathy is used as a defining threshold of diabetes, we assessed the glycated hemoglobin A1c (HbA1c) and fasting plasma glucose (FPG) values associated with an increased risk of 5-year incidence of retinopathy. METHODS: We studied HbA1c, FPG, and optic fundus findings of 2605 individuals without previously diagnosed diabetes annually during a 5-year period. Retinopathy was examined using non-mydriatic, 45° digital fundus photography. Baseline levels were stratified as <5...
December 27, 2016: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28081152/increased-serum-sodium-and-serum-osmolarity-are-independent-risk-factors-for-developing-chronic-kidney-disease-5-year-cohort-study
#5
Masanari Kuwabara, Ichiro Hisatome, Carlos A Roncal-Jimenez, Koichiro Niwa, Ana Andres-Hernando, Thomas Jensen, Petter Bjornstad, Tamara Milagres, Christina Cicerchi, Zhilin Song, Gabriela Garcia, Laura G Sánchez-Lozada, Minoru Ohno, Miguel A Lanaspa, Richard J Johnson
BACKGROUND: Epidemics of chronic kidney disease (CKD) not due to diabetes mellitus (DM) or hypertension have been observed among individuals working in hot environments in several areas of the world. Experimental models have documented that recurrent heat stress and water restriction can lead to CKD, and the mechanism may be mediated by hyperosmolarity that activates pathways (vasopressin, aldose reductase-fructokinase) that induce renal injury. Here we tested the hypothesis that elevated serum sodium, which reflects serum osmolality, may be an independent risk factor for the development of CKD...
2017: PloS One
https://www.readbyqxmd.com/read/28080012/medicaid-s-future-what-might-aca-repeal-mean
#6
Sara Rosenbaum, Sara Rothenberg, Rachel Gunsalus, Sara Schmucker
Issue: Republicans in Congress are expected to repeal portions of the Affordable Care Act (ACA) using a fast-track process known as budget reconciliation. Goals: This issue brief examines how repeal legislation could affect Medicaid, the nation’s health care safety net, which insured 70 million people in 2016. Findings and Conclusions: Partial-repeal legislation that passed Congress but was vetoed by President Obama in 2016 offers some insight but new legislation could go further. It could repeal the ACA’s Medicaid eligibility expansions for adults and children but also roll back other provisions, such as simplified enrollment and improvements in long-term services and supports for beneficiaries with disabilities...
2017: Issue Brief of the Commonwealth Fund
https://www.readbyqxmd.com/read/28079808/diagnosis-and-treatment-of-pediatric-benign-pneumoperitoneum-a-case-report-series-of-9-patients
#7
Shou-Xing Duan, Zong-Bo Sun, Guang-Huan Wang, Jun Zhong, Wen-Hui Ou, Ma-Xian Fu, Fu-Sheng Wang, Shu-Hua Ma, Jian-Hong Li
INTRODUCTION: Benign pneumoperitoneum (BPPT) is defined as asymptomatic free intraabdominal air or as pneumoperitoneum without peritonitis. Symptomatic free air requires surgical anagement, but management of asymptomatic pneumoperitoneum is controversial. In this study, we investigate the diagnosis and treatment of BPPT in children. CLINICAL FINDINGS: The clinical data of 9 pediatric patients with BPPT who were admitted to our hospital from January 2000 to January 2015 were retrospectively analyzed to summarize the diagnosis and treatment...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28079428/the-first-6-weeks-of-recovery-after-primary-total-hip-arthroplasty-with-fast-track
#8
Lisette C M Klapwijk, Nina M C Mathijssen, Jeroen C Van Egmond, Bianca M Verbeek, Stephan B W Vehmeijer
Background and purpose - Fast-track protocols have been introduced worldwide to improve the recovery after total hip arthroplasty (THA). These protocols have reduced the length of hospital stay (LOS), and THA in an outpatient setting is also feasible. However, less is known regarding the first weeks after THA with fast track. We examined patients' experiences of the first 6 weeks after hospital discharge following inpatient and outpatient THA with fast track. Patients and methods - In a prospective cohort study, 100 consecutive patients who underwent THA surgery in a fast-track setting between February 2015 and October 2015 received a diary for 6 weeks...
January 12, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28078467/clinical-characteristics-risk-factors-and-outcomes-of-asymptomatic-rectal-neuroendocrine-tumors
#9
Sun-Hye Ko, Myong Ki Baeg, Seung Yeon Ko, Hee Sun Jung
BACKGROUND: Rectal neuroendocrine tumors (NET) are often asymptomatic and frequently discovered during health examinations. However, data on the risk factors of asymptomatic rectal NETs are lacking. We investigated the risk factors, clinical characteristics and outcomes of asymptomatic rectal NETs discovered during health screening. MATERIALS AND METHODS: Asymptomatic subjects who underwent colonoscopy during routine health screening at a tertiary hospital from March 2009 to July 2014 were reviewed...
January 11, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28077380/metabolomic-profiles-as-reliable-biomarkers-of-dietary-composition
#10
Tõnu Esko, Joel N Hirschhorn, Henry A Feldman, Yu-Han H Hsu, Amy A Deik, Clary B Clish, Cara B Ebbeling, David S Ludwig
BACKGROUND: Clinical nutrition research often lacks robust markers of compliance, complicating the interpretation of clinical trials and observational studies of free-living subjects. OBJECTIVE: We aimed to examine metabolomics profiles in response to 3 diets that differed widely in macronutrient composition during a controlled feeding protocol. DESIGN: Twenty-one adults with a high body mass index (in kg/m(2); mean ± SD: 34.4 ± 4.9) were given hypocaloric diets to promote weight loss corresponding to 10-15% of initial body weight...
January 11, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28077092/phylogenetic-analysis-of-ionotropic-l-glutamate-receptor-genes-in-the-bilateria-with-special-notes-on-aplysia-californica
#11
Justin B Greer, Sawsan Khuri, Lynne A Fieber
BACKGROUND: The neurotransmitter L-Glutamate (L-Glu) acting at ionotropic L-Glu receptors (iGluR) conveys fast excitatory signal transmission in the nervous systems of all animals. iGluR-dependent neurotransmission is a key component of the synaptic plasticity that underlies learning and memory. During learning, two subtypes of iGluR, α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors (AMPAR) and N-methyl-D-aspartate receptors (NMDAR), are dynamically regulated postsynaptically in vertebrates...
January 11, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28076675/low-fasting-oxytocin-levels-are-associated-with-psychopathology-in-anorexia-nervosa-in-partial-recovery
#12
Yuliya Afinogenova, Cindy Schmelkin, Franziska Plessow, Jennifer J Thomas, Reitumetse Pulumo, Nadia Micali, Karen K Miller, Kamryn T Eddy, Elizabeth A Lawson
OBJECTIVE: Anorexia nervosa (AN), a psychiatric disorder characterized by restriction of food intake despite severe weight loss, is associated with increased comorbid anxiety and depression. Secretion of oxytocin, an appetite-regulating neurohormone with anxiolytic and antidepressant properties, is abnormal in AN. The link between oxytocin levels and psychopathology in AN has not been well explored. METHODS: We performed a cross-sectional study of 79 women aged 18-45 years (19 AN, 26 AN in partial recovery [ANPR], and 34 healthy controls [HC]) investigating the relationship between basal oxytocin levels and disordered eating psychopathology, anxiety, and depressive symptoms...
November 2016: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28076468/phenotypic-diversity-and-selection-maintain-leishmania-amazonensis-infectivity-in-balb-c-mouse-model
#13
Benoît Espiau, Virginia Vilhena, Armelle Cuvillier, Aldina Barral, Gilles Merlin
Leishmania are protozoan parasites that show remarkable diversity, as revealed by the various clinical forms of leishmaniasis, which can range from mild skin lesions to severe metastatic cutaneous/mucosal lesions. The exact nature and extent of Leishmania phenotypic diversity in establishing infection is not fully understood. In order to try to understand some aspects of this diversity, we subcutaneously infected BALB/c mice with first and second generation subclones of a L. amazonensis strain isolated from a patient (BA125) and examined in vivo lesion growth rate and antimony susceptibility...
January 1, 2017: Memórias do Instituto Oswaldo Cruz
https://www.readbyqxmd.com/read/28076307/evaluation-of-the-greiner-bio-one-serum-separator-bca-fast-clot-tube
#14
Goce Dimeski, Julie Johnston, Paul P Masci, Kong-Nan Zhao, Nigel Brown
BACKGROUND: Current commercial tubes have difficulties in producing "true" serum from all blood samples even within the recommended clotting times. Hence, Becton Dickinson (BD) and now Greiner have produced tubes containing thrombin as the procoagulant to reduce the clotting time and increase the possibility of producing serum from anticoagulated blood samples. METHODS: The Greiner BCA Fast Clot (GBBCAFC) tube was evaluated in a hospital environment using 40 participants, (30 healthy and 10 undergoing renal dialysis) for 32 analytes against the Greiner lithium heparin tube and the BD Rapid Serum Tubes (BD RST) tube measured on Beckman DxC 800 and DxI 800 analyzers...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28075120/femtosecond-study-of-dimolybdenum-paddlewheel-compounds-with-amide-thioamide-ligands-symmetry-electronic-structure-and-charge-distribution-in-the-1-mlct-s1-state
#15
Changcheng Jiang, Philip J Young, Samantha Brown-Xu, Judith C Gallucci, Malcolm H Chisholm
Four photophysically interesting dimolybdenum paddlewheel compounds are synthesized and characterized: I and II contain amide ligand (N,3-diphenyl-2-propynamide), and III and IV contain thioamide ligand (N,3-diphenyl-2-propynethioamide). I and III are trans-Mo2L2(O2C-T(i)PB)2-type compounds, and II and IV are Mo2L4-type compounds, where O2C-T(i)PB is 2,4,6-triisopropylbenzoate. I-IV display strong light absorption due to metal to ligand charge transfer (MLCT) transitions from molybdenum to the amide/thioamide ligands...
January 11, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28075022/the-mechanistic-basis-for-photobiomodulation-therapy-of-neuropathic-pain-by-near-infrared-laser-light
#16
Vanessa Milanesi Holanda, Maria Cristina Chavantes, Xingjia Wu, Juanita J Anders
BACKGROUND AND OBJECTIVE: Various irradiances have been reported to be beneficial for the treatment of neuropathic pain with near infrared light. However, the mechanistic basis for the beneficial outcomes may vary based on the level of irradiance or fluence rate used. Using in vivo and in vitro experimental models, this study determined the mechanistic basis of photobiomodulation therapy (PBMT) for the treatment of neuropathic pain using a high irradiance. STUDY DESIGN/MATERIALS AND METHODS: In vitro experiments: Cultured, rat DRG were randomly assigned to control or laser treatment (LT) groups with different irradiation times (2, 5, 30, 60, or 120 seconds)...
January 11, 2017: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/28074498/imaging-and-t2-relaxometry-of-short-t2-connective-tissues-in-the-knee-using-ultrashort-echo-time-double-echo-steady-state-utedess
#17
Akshay S Chaudhari, Bragi Sveinsson, Catherine J Moran, Emily J McWalter, Ethan M Johnson, Tao Zhang, Garry E Gold, Brian A Hargreaves
PURPOSE: To develop a radial, double-echo steady-state (DESS) sequence with ultra-short echo-time (UTE) capabilities for T2 measurement of short-T2 tissues along with simultaneous rapid, signal-to-noise ratio (SNR)-efficient, and high-isotropic-resolution morphological knee imaging. METHODS: THe 3D radial UTE readouts were incorporated into DESS, termed UTEDESS. Multiple-echo-time UTEDESS was used for performing T2 relaxometry for short-T2 tendons, ligaments, and menisci; and for Dixon water-fat imaging...
January 11, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28074059/school-environment-and-policies-child-eating-behavior-and-overweight-obesity-in-urban-china-the-childhood-obesity-study-in-china-mega-cities
#18
P Jia, M Li, H Xue, L Lu, F Xu, Y Wang
OBJECTIVES: Childhood obesity is rising rapidly in China, especially in urban areas. Knowledge about how school environment and policies (SEP) may have contributed to the epidemic remains limited. We examined SEP and their associations with students' eating behaviors and overweight/obesity in urban China. METHODS: Data were collected from 1648 students (plus their parents and schools) in 16 primary and middle schools (4 schools/per city) in four mega-cities across China: Beijing, Shanghai, Nanjing, and Xi'an...
January 11, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28073325/the-moderating-role-of-insulin-like-growth-factor-1-in-the-relationship-between-cognitive-and-aerobic-endurance-change
#19
Jason R Anderson, Dayana Calvo, Ellen Glickman, John Gunstad, Mary Beth Spitznagel
BACKGROUND: Improvements in cognition often accompany fitness improvements in older adults, and research suggests insulin-like growth factor 1 (IGF-1) may influence this association. No prior work has examined this in mild cognitive impairment (MCI). We predicted that IGF-1 would moderate the relationship between cognition and aerobic endurance improvement, such that greater baseline IGF-1 would accompany a stronger relationship between cognition and aerobic endurance change. METHOD: Twenty-seven individuals with MCI completed assessments of aerobic endurance (2-minute step test [2MST]) and global cognition (Modified Mini-Mental State [3MS]) before and after a 6-month period of twice-weekly exercise...
January 1, 2017: Journal of Geriatric Psychiatry and Neurology
https://www.readbyqxmd.com/read/28073048/perfluoroalkyl-substances-and-fish-consumption
#20
Krista Y Christensen, Michelle Raymond, Michael Blackowicz, Yangyang Liu, Brooke A Thompson, Henry A Anderson, Mary Turyk
BACKGROUND: Perfluoroalkyl substances (PFAS) are an emerging class of contaminants. Certain PFAS are regulated or voluntarily limited due to concern about environmental persistence and adverse health effects, including thyroid disease and dyslipidemia. The major source of PFAS exposure in the general population is thought to be consumption of seafood. OBJECTIVES: In this analysis we examine PFAS levels and their determinants, as well as associations between PFAS levels and self-reported fish and shellfish consumption, using a representative sample of the U...
January 7, 2017: Environmental Research
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