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https://www.readbyqxmd.com/read/28820193/a-modeling-study-of-methane-hydrate-decomposition-in-contact-with-the-external-surface-of-zeolites
#1
Konstantin S Smirnov
The behavior of methane hydrate (MH) enclosed between the (010) surfaces of the silicalite-1 zeolite was studied by means of molecular dynamics simulations at temperatures of 150 and 250 K. Calculations reveal that the interaction with the hydrophilic surface OH groups destabilizes the clathrate structure of hydrate. While MH mostly conserves the structure in the simulation at the low temperature, thermal motion at the high temperature breaks the fragilized cages of H-bonded water molecules, thus leading to the release of methane...
August 18, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28816565/dacryocystectomy-as-a-treatment-of-chronic-dacryocystitis-in-the-elderly
#2
Mariana N Meireles, Magda Mh Viveiros, Roberta Lfs Meneghin, Alicia Galindo-Ferreiro, Mariângela Ea Marques, Silvana A Schellini
To evaluate the dacryocystectomy (DCT) outcomes for chronic dacryocystitis in an elderly population over 70 years old. A retrospective chart review was performed for patients over 70 years old who were diagnosed with chronic dacryocystitis and underwent DCT at the Botucatu School of Medicine, UNESP, Brazil, from 2007 to July 2014. Data were collected about patient demographics, age, gender, previous nasal, or ophthalmic diseases, symptoms related to the lacrimal drainage system preoperatively and postoperatively, signs of enlargement of the lacrimal sac (regurgitation of secretion), and histopathologic evaluation...
August 17, 2017: Orbit
https://www.readbyqxmd.com/read/28816459/observation-and-characterization-of-ch3ch2-mh-ch2-2-mh2-ch2-ch-mh3-and-ch3-c%C3%A2-mh3-produced-by-reactions-of-group-5-metal-atoms-with-ethane
#3
Han-Gook Cho, Lester Andrews
The primary products in reactions of laser-ablated group 5 metal atoms with ethane have been identified in argon matrix IR spectra and characterized via DFT computations. The 2nd and 3rd row transition-metals produced insertion, metallacyclopropane, vinyl trihydrido, and anionic ethylidyne complexes (CH3CH2-MH, (CH2)2-MH2, CH2=CH-MH3, and CH3C≡MH3-) while the 1st row transition-metal yielded only the insertion and metallacyclopropane products. The energetically higher ethylidenes and neutral ethylidynes (CH3CH=MH2 and CH3C≐MH3) were not detected...
August 17, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28813014/antibacterial-properties-of-nonwoven-wound-dressings-coated-with-manuka-honey-or-methylglyoxal
#4
Sophie E L Bulman, Giuseppe Tronci, Parikshit Goswami, Chris Carr, Stephen J Russell
Manuka honey (MH) is used as an antibacterial agent in bioactive wound dressings via direct impregnation onto a suitable substrate. MH provides unique antibacterial activity when compared with conventional honeys, owing partly to one of its constituents, methylglyoxal (MGO). Aiming to investigate an antibiotic-free antimicrobial strategy, we studied the antibacterial activity of both MH and MGO (at equivalent MGO concentrations) when applied as a physical coating to a nonwoven fabric wound dressing. When physically coated on to a cellulosic hydroentangled nonwoven fabric, it was found that concentrations of 0...
August 16, 2017: Materials
https://www.readbyqxmd.com/read/28807721/selenopheno-quinolinones-and-coumarins-promote-cancer-cell-apoptosis-by-ros-depletion-and-caspase-7-activation
#5
Ilona Domracheva, Iveta Kanepe-Lapsa, Ludmila Jackevica, Jelena Vasiljeva, Pavel Arsenyan
AIM: This study was designed to investigate the mechanism underlying cancer cell apoptosis caused by selenophenoquinolinones and coumarins. MATERIALS AND METHODS: Twelve derivatives were studied according to their ability to suppress the proliferation of cancer cells in vitro (i.e., HepG2, MH-22A, MCF-7), induce cell apoptosis, modulate cellular antioxidant enzyme system activities (i.e., SOD, GPx, TrxR), influence the level of ROS, and modulate caspase activity...
August 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/28807719/maternal-hypothyroidism-an-overview-of-current-experimental-models
#6
REVIEW
Mahboubeh Ghanbari, Asghar Ghasemi
Maternal hypothyroidism (MH) is the most common cause of transient congenital hypothyroidism. Different animal models are used for assessing developmental effects of MH in offspring. The severity and status of hypothyroidism in animal models must be a reflection of the actual conditions in humans. To obtain comparable results with different clinical conditions, which lead to MH in humans, several factors have been suggested for researchers to consider before designing the experimental models. Regarding development of fetal body systems during pregnancy, interference at different times provides different results and the appropriate time for induction of hypothyroidism should be selected based on accurate time of development of the system under assessment...
August 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/28807357/development-and-initial-validation-of-the-macrophage-activation-syndrome-primary-hemophagocytic-lymphohistiocytosis-score-a-diagnostic-tool-that-differentiates-primary-hemophagocytic-lymphohistiocytosis-from-macrophage-activation-syndrome
#7
Francesca Minoia, Francesca Bovis, Sergio Davì, Antonella Insalaco, Kai Lehmberg, Susan Shenoi, Sheila Weitzman, Graciela Espada, Yi-Jin Gao, Jordi Anton, Toshiyuki Kitoh, Ozgur Kasapcopur, Helga Sanner, Rosa Merino, Itziar Astigarraga, Maria Alessio, Michael Jeng, Vyacheslav Chasnyk, Kim E Nichols, Zeng Huasong, Caifeng Li, Concetta Micalizzi, Nicolino Ruperto, Alberto Martini, Randy Q Cron, Angelo Ravelli, AnnaCarin Horne
OBJECTIVE: To develop and validate a diagnostic score that assists in discriminating primary hemophagocytic lymphohistiocytosis (pHLH) from macrophage activation syndrome (MAS) related to systemic juvenile idiopathic arthritis. STUDY DESIGN: The clinical, laboratory, and histopathologic features of 362 patients with MAS and 258 patients with pHLH were collected in a multinational collaborative study. Eighty percent of the population was assessed to develop the score and the remaining 20% constituted the validation sample...
August 11, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28807139/recognition-of-anxiety-depression-and-ptsd-in-patients-with-copd-and-chf-who-gets-missed
#8
Chelsea G Ratcliff, Terri L Barrera, Nancy J Petersen, Shubhada Sansgiry, Michael R Kauth, Mark E Kunik, Melinda A Stanley, Jeffrey A Cully
OBJECTIVE: This study sought to identify patient factors associated with mental health (MH) recognition and treatment in medically ill Veterans. METHOD: Retrospective data from patient electronic medical records (EMR) and self-report data were reviewed for 180 Veterans with cardiopulmonary conditions who met diagnostic criteria for anxiety, depression, or posttraumatic stress disorder on the Mini-International Neuropsychiatric Interview. Multivariate logistic regression examined the association of medical record MH recognition and MH service use with patient factors, including anxiety and depression severity, self-efficacy, locus of control, coping, illness intrusiveness, and health-related quality of life (QOL)...
July 2017: General Hospital Psychiatry
https://www.readbyqxmd.com/read/28805919/cows-exposed-to-heat-stress-during-fetal-life-exhibit-improved-thermal-tolerance
#9
B M S Ahmed, U Younas, T O Asar, S Dikmen, P J Hansen, G E Dahl
Maternal heat stress during late gestation affects calf function during postnatal life. The objective of the present study was to evaluate whether calves that experience heat stress in utero have altered thermoregulatory responses to acute heat stress later in life. Specifically, the hypothesis was that heat stress in utero would improve the response to acute heat stress at maturity. Females were born to dams exposed to heat stress or cooled during late gestation preceding their birth. All animals were raised postnatally under identical management...
August 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28805421/collaborating-with-community-based-services-to-promote-evidence-based-practice-process-description-of-a-national-initiative-to-improve-services-for-youth-with-mental-health-and-substance-use-problems
#10
Joanna L Henderson, Gloria Chaim, E B Brownlie
Many youth with significant mental health (MH) and/or substance use (SU) difficulties do not receive specialized services. Collaboration between service providers, researchers, and other stakeholders is essential to improve youth service system capacity to provide evidence-based services to meet the complex array of needs of youth. Facilitators and barriers of implementing evidence-based practice have been identified, but few studies provide examples of the processes of collaboration and implementation for youth MH services...
August 2017: Psychological Services
https://www.readbyqxmd.com/read/28801470/litigation-provides-clues-to-ongoing-challenges-in-implementing-insurance-parity
#11
Kelsey N Berry, Haiden A Huskamp, Howard H Goldman, Lainie Rutkow, Colleen L Barry
Over the past twenty-five years, thirty-seven states and the US Congress have passed mental health and substance use disorder (MH/SUD) parity laws to secure nondiscriminatory insurance coverage for MH/SUD services in the private health insurance market and through certain public insurance programs. However, in the intervening years, litigation has been brought by numerous parties alleging violations of insurance parity. We examine the critical issues underlying these legal challenges as a framework for understanding the areas in which parity enforcement is lacking, as well as ongoing areas of ambiguity in the interpretation of these laws...
August 11, 2017: Journal of Health Politics, Policy and Law
https://www.readbyqxmd.com/read/28800279/more-than-a-feeling-an-empirical-analysis-of-the-dual-continua-model-on-a-national-sample-of-lesbian-gay-and-bisexual-identified-canadians
#12
Tracey Peter
The goal of the study is to investigate whether positive mental health complements mental illness within a theoretically informed (the dual-continua model) and psychometrically tested (the Mental Health Continuum-Short Form) framework. National-level, population-based data from the 2012 Canadian Community Health Survey on Mental Health (CCHS-MH) was used, with comparisons between sexual minority and heterosexual adults. Results show that gay, lesbian, and bisexual Canadians have substantially lower rates of positive mental health and are more likely to have been diagnosed with a mental illness, with the disparities between health and illness being the most pronounced among lesbians and bisexual females...
August 11, 2017: Journal of Homosexuality
https://www.readbyqxmd.com/read/28796990/adsorptive-depletion-of-myeloid-lineage-leucocytes-as-remission-induction-therapy-in-patients-with-ulcerative-colitis-after-failure-of-first-line-medications-results-from-a-three-year-real-world-clinical-practice
#13
Takayuki Iida, Kentaro Ikeya, Masaichi Kato, Jinro Abe, Masayoshi Yamamoto, Fumitoshi Watanabe, Ken Sugimoto, Hiroyuki Hanai
BACKGROUND/AIMS: In patients with active ulcerative colitis (UC), pharmacologics, although initially effective in most patients, are associated with refractoriness, loss of response or unfavourable side effects as additional morbidity factors. Depletion of myeloid lineage leucocytes like the CD14(+)CD16(+) monocyte phenotype, which is a major source of tumour necrosis factor-α, by granulocyte/monocyte apheresis (GMA) if effective, is also known to be free from side effects. METHODS: In clinical practice setting, 77 consecutive patients with moderate to severe UC, who failed to respond to first-line medications received GMA with the Adacolumn as remission induction therapy...
August 11, 2017: Digestion
https://www.readbyqxmd.com/read/28796147/surgical-outcomes-in-eyes-with-extremely-high-myopia-for-macular-hole-without-retinal-detachment
#14
Tsung-Tien Wu, Ya-Hsin Kung, Chih-Yao Chang, Shu-Ping Chang
PURPOSE: The authors evaluated surgical outcomes in eyes with extremely high myopia for macular hole (MH) without retinal detachment. METHODS: In this retrospective study, 14 eyes with axial lengths of ≥30.0 mm underwent vitrectomy and internal limiting membrane (ILM) peeling with or without inverted ILM flap insertion for MH without retinal detachment (October 2009-June 2016). Outcome measures were MH closure confirmed by optical coherence tomography, best-corrected visual acuity, and complications...
August 8, 2017: Retina
https://www.readbyqxmd.com/read/28782888/physical-activity-and-sedentary-time-associations-with-metabolic-health-across-weight-statuses-in-children-and-adolescents
#15
Nicholas Kuzik, Valerie Carson, Lars Bo Andersen, Luís B Sardinha, Anders Grøntved, Bjørge Herman Hansen, Ulf Ekelund
OBJECTIVE: The aim of this study was to examine the prevalence of metabolic health across weight statuses and the associations of physical activity and sedentary time within and across metabolic health-weight status groups. METHODS: Six studies (n = 4,581) from the International Children's Accelerometry Database were used. Sedentary time, light physical activity, and moderate to vigorous physical activity (MVPA) were accelerometer derived. Individuals were classified with normal weight (NW), overweight, or obesity...
August 7, 2017: Obesity
https://www.readbyqxmd.com/read/28777491/identification-of-stac3-variants-in-non-native-american-families-with-overlapping-features-of-carey-fineman-ziter-syndrome-and-moebius-syndrome
#16
Aida Telegrafi, Bryn D Webb, Sarah M Robbins, Carlos E Speck-Martins, David FitzPatrick, Leah Fleming, Richard Redett, Andreas Dufke, Gunnar Houge, Jeske J T van Harssel, Alain Verloes, Angela Robles, Irini Manoli, Elizabeth C Engle, Ethylin W Jabs, David Valle, John Carey, Julie E Hoover-Fong, Nara L M Sobreira
Horstick et al. (2013) previously reported a homozygous p.Trp284Ser variant in STAC3 as the cause of Native American myopathy (NAM) in 5 Lumbee Native American families with congenital hypotonia and weakness, cleft palate, short stature, ptosis, kyphoscoliosis, talipes deformities, and susceptibility to malignant hyperthermia (MH). Here we present two non-Native American families, who were found to have STAC3 pathogenic variants. The first proband and her affected older sister are from a consanguineous Qatari family with a suspected clinical diagnosis of Carey-Fineman-Ziter syndrome (CFZS) based on features of hypotonia, myopathic facies with generalized weakness, ptosis, normal extraocular movements, cleft palate, growth delay, and kyphoscoliosis...
August 4, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28774580/advancing-imaging-technologies-for-patients-with-spinal-pain-with-a-focus-on-whiplash-injury
#17
James M Elliott, Mark J Hancock, Rebecca J Crawford, Andrew C Smith, David M Walton
BACKGROUND CONTEXT: Radiological observations of soft-tissue changes that may relate to clinical symptoms in patients with traumatic and non-traumatic spinal disorders are highly controversial. Studies are often of poor quality and findings inconsistent. A plethora of evidence suggests some pathoanatomical findings from traditional imaging applications are common in asymptomatic participants across the life span, which further questions the diagnostic, prognostic, and theranostic value of traditional imaging...
July 31, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28774288/the-impact-of-igm-deposits-on-the-outcome-of-nephrotic-syndrome-in-children
#18
Sandra Juozapaite, Rimante Cerkauskiene, Arvydas Laurinavicius, Augustina Jankauskiene
BACKGROUND: The significance of IgM deposits in glomerular mesangium has been controversial since they were first described due to the variations in the both the definitions used and described impact on clinical outcome. The aim of our study was to evaluate the significance of the IgM deposits in the glomerular mesangium for outcomes of nephrotic syndrome (NS) in children. METHODS: Forty-five children with NS who underwent renal biopsy at tertiary pediatric hospital from January 1st, 2000 to December 31st, 2015 and the pathology diagnosis of minimal change disease, focal segmental glomerulosclerosis and mesangial hypercellularity (MH) were retrospectively analyzed...
August 3, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28762868/investigating-intracellular-persistence-of-staphylococcus-aureus-within-a-murine-alveolar-macrophage-cell-line
#19
A Lacoma, V Cano, D Moranta, V Regueiro, D Domínguez-Villanueva, M Laabei, M González-Nicolau, V Ausina, C Prat, J A Bengoechea
OBJECTIVE: Staphylococcus aureus is a particularly difficult pathogen to eradicate from the respiratory tract. Previous studies have highlighted the intracellular capacity of S.aureus in a number of phagocytic and non-phagocytic cells. The aim of this study was to define S.aureus interaction within a murine alveolar macrophage cell line. METHODS: Cell line MH-S was infected with Newman strain. Molecular mechanisms involved in phagocytosis were explored. To assess whether S...
August 1, 2017: Virulence
https://www.readbyqxmd.com/read/28760245/hymenoplasty-and-muslim-patients-islamic-ethico-legal-perspectives
#20
Mohammad H Bawany, Aasim I Padela
BACKGROUND: Hymenoplasty, commonly called "revirginization," is a controversial procedure that pushes the scope of medical practice to satisfy cultural and/or religious "needs." AIM: To outline the sociocultural contexts underlying patient requests for hymenoplasty and present Islamic juridical views on the moral status of hymenoplasty for Muslim patients. METHODS: Narrative review of the extant bioethics literature and leading Islamic ethico-legal verdicts...
August 2017: Journal of Sexual Medicine
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