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https://www.readbyqxmd.com/read/29888904/ph-dependent-piecewise-linear-correlation-of-1h-31p-chemical-shifts-application-in-nmr-identification-of-nerve-agent-metabolites-in-urine-samples
#1
Harri Koskela, Boban Andjelkovic, Annette Pettersson, Marja-Leena Rapinoja, Marja-Leena Kuitunen, Paula Vanninen
The NMR-observable nuclei of the acidic and basic compounds experience pH dependence in chemical shift. This phenomenon can be exploited in NMR titrations to determine pKa values of compounds, or in pH measurement of solutions using dedicated pH reference compounds. On the other hand, this sensitivity can also cause problems in e.g. metabolomics, where slight changes in pH result in significant difficulties for peak alignment between spectra of set of samples for comparative analysis. In worst case, the pH sensitivity of chemical shifts can prevent unambiguous identification of compounds...
June 11, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29788089/the-relationship-between-traumatic-brain-injury-and-rates-of-chronic-symptomatic-illness-in-202-gulf-war-veterans
#2
Linda L Chao
Introduction: Although not a "signature injury" of Operation Desert Shield/Desert Storm (i.e., Gulf War, GW), some GW veterans have a history traumatic brain injury (TBI). For example, a previous study found that 12.2% of the GW veterans from the Fort Devens Cohort Study had self-reported TBIs. The present study sought to build upon this finding by examining the relationship between TBI and chronic symptomatic illness in a different sample of GW veterans. Materials and Methods: Participants were 202 GW veterans recruited from 2014 to 2018 at the San Francisco Veterans Affairs Medical Center as part of a VA-funded study on the effects of predicted exposure to low levels of sarin and cyclosarin on brain structure and function...
May 18, 2018: Military Medicine
https://www.readbyqxmd.com/read/29784420/stable-carbon-isotope-ratios-for-sourcing-the-nerve-agent-precursor-methylphosphonic-dichloride-and-its-products
#3
James J Moran, Carlos G Fraga, Megan K Nims
The ability to connect a chemical threat agent to a specific batch of a synthetic precursor can provide a fingerprint to contribute to effective forensic investigations. Stable isotope analysis can leverage intrinsic, natural isotopic variability within the molecules of a threat agent to unlock embedded chemical fingerprints in the material. Methylphosphonic dichloride (DC) is a chemical precursor to the nerve agent sarin. DC is converted to methylphosphonic difluoride (DF) as part of the sarin synthesis process...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29758283/tgf-%C3%AE-fibronectin-and-integrin-%C3%AE-5%C3%AE-1-promote-invasion-in-basal-cell-carcinoma
#4
François Kuonen, Isabelle Surbeck, Kavita Y Sarin, Monique Dontenwill, Curzio Ruegg, Michel Gilliet, Anthony E Oro, Olivier Gaide
Basal cell carcinoma (BCC) is the most frequent human cancer and is becoming an important health problem in an ageing population. Based on their clinical and histological characteristics, thick BCC are typically divided into low-risk nodular and high-risk infiltrative subtypes, although the underlying mechanisms are poorly understood. We have identified molecular mechanisms that explain the aggressiveness of high-risk infiltrative BCC, with a potential direct clinical impact. In this study, we first show that fibroblasts, TGFβ and fibronectin are found preferentially in infiltrative human BCC...
May 11, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29753155/assessing-nicotine-dependence-in-adolescent-e-cigarette-users-the-4-item-patient-reported-outcomes-measurement-information-system-promis-nicotine-dependence-item-bank-for-electronic-cigarettes
#5
Meghan E Morean, Suchitra Krishnan-Sarin, Stephanie S O'Malley
BACKGROUND: Adolescent e-cigarette use (i.e., "vaping") likely confers risk for developing nicotine dependence. However, there have been no studies assessing e-cigarette nicotine dependence in youth. We evaluated the psychometric properties of the 4-item Patient-Reported Outcomes Measurement Information System Nicotine Dependence Item Bank for E-cigarettes (PROMIS-E) for assessing youth e-cigarette nicotine dependence and examined risk factors for experiencing stronger dependence symptoms...
April 26, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29747078/mechanisms-of-acetylcholinesterase-protection-against-sarin-and-soman-by-adenosine-a-1-receptor-agonist-n-6-cyclopentyladenosine
#6
Ariana Beste, DeCarlos E Taylor, Tsung-Ming Shih, Thaddeus P Thomas
Organophosphorus nerve agents (NAs) irreversibly inhibit acetylcholinesterase (AChE), the enzyme responsible for breaking down the neurotransmitter acetylcholine (ACh). The over accumulation of ACh after NA exposure leads to cholinergic toxicity, seizure, and death. Current medical countermeasures effectively mitigate peripheral symptoms, however; the brain is often unprotected. Alternative acute treatment with the adenosine A1 receptor agonist N6 -cyclopentyladensosine (CPA) has previously been demonstrated to prevent AChE inhibition as well as to suppress neuronal activity...
May 7, 2018: Computational Biology and Chemistry
https://www.readbyqxmd.com/read/29676846/generic-sofosbuvir-based-direct-acting-antivirals-in-hepatitis-c-virus-infected-patients-with-chronic-kidney-disease
#7
Manoj Kumar, Suman L Nayak, Ekta Gupta, Ashish Kataria, Shiv K Sarin
BACKGROUND & AIMS: There is scant data on use of sofosbuvir containing directly acting antiviral (DAA) regimens in chronic kidney disease (CKD) patients. Recently generic versions of DAAs have become available in low-income countries including India. The aim of this study was to study the efficacy and safety of generic sofosbuvir in combination with generic ribavirin, ledipasvir or daclatasvir in HCV-infected patients with CKD including patients with advanced CKD (CKD stage 4 or 5 with an estimated glomerular filtration rate (GFR) <30 mL/min or those on dialysis)...
April 20, 2018: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29673887/socioeconomic-status-and-adolescent-e-cigarette-use-the-mediating-role-of-e-cigarette-advertisement-exposure
#8
Patricia Simon, Deepa R Camenga, Meghan E Morean, Grace Kong, Krysten W Bold, Dana A Cavallo, Suchitra Krishnan-Sarin
Among adolescents, low socioeconomic status (SES) is associated with greater exposure to tobacco cigarette advertising and cigarette use. However, associations among SES, e-cigarette advertising and e-cigarette use are not well understood. This study examined exposure to e-cigarette advertisements as a mediator of the relationship between SES and adolescent e-cigarette use. Adolescents (N = 3473; 51% Female) from 8 high schools in Connecticut completed an anonymous survey in Spring 2015. Mediation analysis was used to examine whether the total number of sources of recent e-cigarette advertising exposure (e...
July 2018: Preventive Medicine
https://www.readbyqxmd.com/read/29672968/potent-3-hydroxy-2-pyridine-aldoxime-reactivators-of-organophosphate-inhibited-cholinesterases-with-predicted-blood-brain-barrier-penetration
#9
Tamara Zorbaz, Anissa Braïki, Nikola Maraković, Julien Renou, Eugenio de la Mora, Nikolina Maček Hrvat, Maja Katalinić, Israel Silman, Joel L Sussman, Guillaume Mercey, Catherine Gomez, Romain Mougeot, Belén Pérez, Rachid Baati, Florian Nachon, Martin Weik, Ludovic Jean, Zrinka Kovarik, Pierre-Yves Renard
A new series of 3-hydroxy-2-pyridine aldoxime compounds have been designed, synthesised and tested in vitro, in silico, and ex vivo as reactivators of human acetylcholinesterase (hAChE) and butyrylcholinesterase (hBChE) inhibited by organophosphates (OPs), for example, VX, sarin, cyclosarin, tabun, and paraoxon. The reactivation rates of three oximes (16-18) were determined to be greater than that of 2-PAM and comparable to that of HI-6, two pyridinium aldoximes currently used by the armies of several countries...
April 19, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29626776/a-fmri-study-on-the-impact-of-advertising-for-flavored-e-cigarettes-on-susceptible-young-adults
#10
Kathleen A Garrison, Stephanie S O'Malley, Ralitza Gueorguieva, Suchitra Krishnan-Sarin
BACKGROUND: E-cigarettes are sold in flavors such as "skittles," "strawberrylicious," and "juicy fruit," and no restrictions are in place on marketing e-cigarettes to youth. Sweets/fruits depicted in e-cigarette advertisements may increase their appeal to youth and interfere with health warnings. This study tested a brain biomarker of product preference for sweet/fruit versus tobacco flavor e-cigarettes, and whether advertising for flavors interfered with warning labels...
May 1, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29625196/sex-modulated-effects-of-sarin-exposure-in-rats-toxicity-hypothermia-and-inflammatory-markers
#11
Z Pittel, E Grauer, R Gez, Y Shlomovich, S Baranes, S Chapman
This work focused on sex differences in rats exposed to sarin. Females were found to be more sensitive to sarin toxicity (LD50 67 μg/kg) than males (88 μg/kg), showed less acute hypothermic effects than males (at 120 min post sarin, 3.1 ± 1.1 and 4.5 ± 1 °C decrease, respectively), but with a significant slower recovery over days. Females' temperature response to the cholinergic agonist oxotremorine (0.25 mg/kg, im) was more pronounced than that of males (at 30 min, 3.13 ± 0.27 and 2...
May 2018: Neurotoxicology
https://www.readbyqxmd.com/read/29609132/the-self-report-habit-index-assessing-habitual-marijuana-alcohol-e-cigarette-and-cigarette-use
#12
Meghan E Morean, Kelly S DeMartini, Dawn Foster, Julie Patock-Peckham, Kathleen A Garrison, Philip R Corlett, John H Krystal, Suchitra Krishan-Sarin, Stephanie S O'Malley
BACKGROUND: Substance use is partially driven by habitual processes that occur automatically in response to environmental cues and may be central to users' identities. This study was designed to validate the Self-Report Habit Index (SRHI) for assessing habitual marijuana, alcohol, cigarette, and e-cigarette use. METHODS: We examined the SRHI's psychometrics in separate samples of adult marijuana (Ns = 189;170), alcohol (Ns = 100;133), cigarette (Ns = 58;371), and e-cigarette (N = 239) users...
May 1, 2018: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29580869/inverse-relationship-between-vitiligo-related-genes-and-skin-cancer-risk
#13
Wenting Wu, Christopher I Amos, Jeffrey E Lee, Qingyi Wei, Kavita Y Sarin, Jiali Han
No abstract text is available yet for this article.
March 23, 2018: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/29547642/-before-xpert-i-only-had-my-expertise-a-qualitative-study-on-the-utilization-and-effects-of-xpert-technology-among-pediatricians-in-4-indian-cities
#14
Andrew McDowell, Neeraj Raizada, Sunil D Khaparde, Raghuram Rao, Sanjay Sarin, Aakshi Kalra, Virender Singh Salhotra, Sreenivas Achuthan Nair, Catharina Boehme, Claudia M Denkinger
BACKGROUND: Diagnosing tuberculosis (TB) in children presents considerable challenges. Upfront testing on Xpert® MTB/RIF ('Xpert')-a rapid molecular assay with high sensitivity and specificity-for pediatric presumptive TB patients, as recommended by India's Revised National Tuberculosis Control Program (RNTCP), can pave the way for early TB diagnosis. As part of an ongoing project implemented by Foundation for Innovative New Diagnostics (FIND) dedicated to providing upfront free-of-cost (FOC) Xpert testing to children seeking care in the public and private sectors, a qualitative assessment was designed to understand how national guidelines on TB diagnosis and Xpert technology have been integrated into the pediatric TB care practices of different health providers...
2018: PloS One
https://www.readbyqxmd.com/read/29545987/gender-differences-in-u-s-adolescent-e-cigarette-use
#15
Grace Kong, Karissa E Kuguru, Suchitra Krishnan-Sarin
Purpose of Review: This study aims to review the recent (2012-2017) available gender difference data on e-cigarette use among adolescents. Recent Findings: E-cigarettes are the most commonly used tobacco product among adolescents, and recent study findings showed that e-cigarette use can lead to cigarette smoking. However, gender differences in e-cigarette use among adolescents are relatively unknown. Summary: We used the search terms "adolescents" and "e-cigarettes" on PubMed and identified 652 articles...
December 2017: Current Addiction Reports
https://www.readbyqxmd.com/read/29531354/multiancestry-genome-wide-association-study-of-520-000-subjects-identifies-32-loci-associated-with-stroke-and-stroke-subtypes
#16
Rainer Malik, Ganesh Chauhan, Matthew Traylor, Muralidharan Sargurupremraj, Yukinori Okada, Aniket Mishra, Loes Rutten-Jacobs, Anne-Katrin Giese, Sander W van der Laan, Solveig Gretarsdottir, Christopher D Anderson, Michael Chong, Hieab H H Adams, Tetsuro Ago, Peter Almgren, Philippe Amouyel, Hakan Ay, Traci M Bartz, Oscar R Benavente, Steve Bevan, Giorgio B Boncoraglio, Robert D Brown, Adam S Butterworth, Caty Carrera, Cara L Carty, Daniel I Chasman, Wei-Min Chen, John W Cole, Adolfo Correa, Ioana Cotlarciuc, Carlos Cruchaga, John Danesh, Paul I W de Bakker, Anita L DeStefano, Marcel den Hoed, Qing Duan, Stefan T Engelter, Guido J Falcone, Rebecca F Gottesman, Raji P Grewal, Vilmundur Gudnason, Stefan Gustafsson, Jeffrey Haessler, Tamara B Harris, Ahamad Hassan, Aki S Havulinna, Susan R Heckbert, Elizabeth G Holliday, George Howard, Fang-Chi Hsu, Hyacinth I Hyacinth, M Arfan Ikram, Erik Ingelsson, Marguerite R Irvin, Xueqiu Jian, Jordi Jiménez-Conde, Julie A Johnson, J Wouter Jukema, Masahiro Kanai, Keith L Keene, Brett M Kissela, Dawn O Kleindorfer, Charles Kooperberg, Michiaki Kubo, Leslie A Lange, Carl D Langefeld, Claudia Langenberg, Lenore J Launer, Jin-Moo Lee, Robin Lemmens, Didier Leys, Cathryn M Lewis, Wei-Yu Lin, Arne G Lindgren, Erik Lorentzen, Patrik K Magnusson, Jane Maguire, Ani Manichaikul, Patrick F McArdle, James F Meschia, Braxton D Mitchell, Thomas H Mosley, Michael A Nalls, Toshiharu Ninomiya, Martin J O'Donnell, Bruce M Psaty, Sara L Pulit, Kristiina Rannikmäe, Alexander P Reiner, Kathryn M Rexrode, Kenneth Rice, Stephen S Rich, Paul M Ridker, Natalia S Rost, Peter M Rothwell, Jerome I Rotter, Tatjana Rundek, Ralph L Sacco, Saori Sakaue, Michele M Sale, Veikko Salomaa, Bishwa R Sapkota, Reinhold Schmidt, Carsten O Schmidt, Ulf Schminke, Pankaj Sharma, Agnieszka Slowik, Cathie L M Sudlow, Christian Tanislav, Turgut Tatlisumak, Kent D Taylor, Vincent N S Thijs, Gudmar Thorleifsson, Unnur Thorsteinsdottir, Steffen Tiedt, Stella Trompet, Christophe Tzourio, Cornelia M van Duijn, Matthew Walters, Nicholas J Wareham, Sylvia Wassertheil-Smoller, James G Wilson, Kerri L Wiggins, Qiong Yang, Salim Yusuf, Joshua C Bis, Tomi Pastinen, Arno Ruusalepp, Eric E Schadt, Simon Koplev, Johan L M Björkegren, Veronica Codoni, Mete Civelek, Nicholas L Smith, David A Trégouët, Ingrid E Christophersen, Carolina Roselli, Steven A Lubitz, Patrick T Ellinor, E Shyong Tai, Jaspal S Kooner, Norihiro Kato, Jiang He, Pim van der Harst, Paul Elliott, John C Chambers, Fumihiko Takeuchi, Andrew D Johnson, Dharambir K Sanghera, Olle Melander, Christina Jern, Daniel Strbian, Israel Fernandez-Cadenas, W T Longstreth, Arndt Rolfs, Jun Hata, Daniel Woo, Jonathan Rosand, Guillaume Pare, Jemma C Hopewell, Danish Saleheen, Kari Stefansson, Bradford B Worrall, Steven J Kittner, Sudha Seshadri, Myriam Fornage, Hugh S Markus, Joanna M M Howson, Yoichiro Kamatani, Stephanie Debette, Martin Dichgans, Rainer Malik, Ganesh Chauhan, Matthew Traylor, Muralidharan Sargurupremraj, Yukinori Okada, Aniket Mishra, Loes Rutten-Jacobs, Anne-Katrin Giese, Sander W van der Laan, Solveig Gretarsdottir, Christopher D Anderson, Michael Chong, Hieab H H Adams, Tetsuro Ago, Peter Almgren, Philippe Amouyel, Hakan Ay, Traci M Bartz, Oscar R Benavente, Steve Bevan, Giorgio B Boncoraglio, Robert D Brown, Adam S Butterworth, Caty Carrera, Cara L Carty, Daniel I Chasman, Wei-Min Chen, John W Cole, Adolfo Correa, Ioana Cotlarciuc, Carlos Cruchaga, John Danesh, Paul I W de Bakker, Anita L DeStefano, Marcel den Hoed, Qing Duan, Stefan T Engelter, Guido J Falcone, Rebecca F Gottesman, Raji P Grewal, Vilmundur Gudnason, Stefan Gustafsson, Jeffrey Haessler, Tamara B Harris, Ahamad Hassan, Aki S Havulinna, Susan R Heckbert, Elizabeth G Holliday, George Howard, Fang-Chi Hsu, Hyacinth I Hyacinth, M Arfan Ikram, Erik Ingelsson, Marguerite R Irvin, Xueqiu Jian, Jordi Jiménez-Conde, Julie A Johnson, J Wouter Jukema, Masahiro Kanai, Keith L Keene, Brett M Kissela, Dawn O Kleindorfer, Charles Kooperberg, Michiaki Kubo, Leslie A Lange, Carl D Langefeld, Claudia Langenberg, Lenore J Launer, Jin-Moo Lee, Robin Lemmens, Didier Leys, Cathryn M Lewis, Wei-Yu Lin, Arne G Lindgren, Erik Lorentzen, Patrik K Magnusson, Jane Maguire, Ani Manichaikul, Patrick F McArdle, James F Meschia, Braxton D Mitchell, Thomas H Mosley, Michael A Nalls, Toshiharu Ninomiya, Martin J O'Donnell, Bruce M Psaty, Sara L Pulit, Kristiina Rannikmäe, Alexander P Reiner, Kathryn M Rexrode, Kenneth Rice, Stephen S Rich, Paul M Ridker, Natalia S Rost, Peter M Rothwell, Jerome I Rotter, Tatjana Rundek, Ralph L Sacco, Saori Sakaue, Michele M Sale, Veikko Salomaa, Bishwa R Sapkota, Reinhold Schmidt, Carsten O Schmidt, Ulf Schminke, Pankaj Sharma, Agnieszka Slowik, Cathie L M Sudlow, Christian Tanislav, Turgut Tatlisumak, Kent D Taylor, Vincent N S Thijs, Gudmar Thorleifsson, Unnur Thorsteinsdottir, Steffen Tiedt, Stella Trompet, Christophe Tzourio, Cornelia M van Duijn, Matthew Walters, Nicholas J Wareham, Sylvia Wassertheil-Smoller, James G Wilson, Kerri L Wiggins, Qiong Yang, Salim Yusuf, Najaf Amin, Hugo S Aparicio, Donna K Arnett, John Attia, Alexa S Beiser, Claudine Berr, Julie E Buring, Mariana Bustamante, Valeria Caso, Yu-Ching Cheng, Seung Hoan Choi, Ayesha Chowhan, Natalia Cullell, Jean-François Dartigues, Hossein Delavaran, Pilar Delgado, Marcus Dörr, Gunnar Engström, Ian Ford, Wander S Gurpreet, Anders Hamsten, Laura Heitsch, Atsushi Hozawa, Laura Ibanez, Andreea Ilinca, Martin Ingelsson, Motoki Iwasaki, Rebecca D Jackson, Katarina Jood, Pekka Jousilahti, Sara Kaffashian, Lalit Kalra, Masahiro Kamouchi, Takanari Kitazono, Olafur Kjartansson, Manja Kloss, Peter J Koudstaal, Jerzy Krupinski, Daniel L Labovitz, Cathy C Laurie, Christopher R Levi, Linxin Li, Lars Lind, Cecilia M Lindgren, Vasileios Lioutas, Yong Mei Liu, Oscar L Lopez, Hirata Makoto, Nicolas Martinez-Majander, Koichi Matsuda, Naoko Minegishi, Joan Montaner, Andrew P Morris, Elena Muiño, Martina Müller-Nurasyid, Bo Norrving, Soichi Ogishima, Eugenio A Parati, Leema Reddy Peddareddygari, Nancy L Pedersen, Joanna Pera, Markus Perola, Alessandro Pezzini, Silvana Pileggi, Raquel Rabionet, Iolanda Riba-Llena, Marta Ribasés, Jose R Romero, Jaume Roquer, Anthony G Rudd, Antti-Pekka Sarin, Ralhan Sarju, Chloe Sarnowski, Makoto Sasaki, Claudia L Satizabal, Mamoru Satoh, Naveed Sattar, Norie Sawada, Gerli Sibolt, Ásgeir Sigurdsson, Albert Smith, Kenji Sobue, Carolina Soriano-Tárraga, Tara Stanne, O Colin Stine, David J Stott, Konstantin Strauch, Takako Takai, Hideo Tanaka, Kozo Tanno, Alexander Teumer, Liisa Tomppo, Nuria P Torres-Aguila, Emmanuel Touze, Shoichiro Tsugane, Andre G Uitterlinden, Einar M Valdimarsson, Sven J van der Lee, Henry Völzke, Kenji Wakai, David Weir, Stephen R Williams, Charles D A Wolfe, Quenna Wong, Huichun Xu, Taiki Yamaji, Dharambir K Sanghera, Olle Melander, Christina Jern, Daniel Strbian, Israel Fernandez-Cadenas, W T Longstreth, Arndt Rolfs, Jun Hata, Daniel Woo, Jonathan Rosand, Guillaume Pare, Jemma C Hopewell, Danish Saleheen, Kari Stefansson, Bradford B Worrall, Steven J Kittner, Sudha Seshadri, Myriam Fornage, Hugh S Markus, Joanna M M Howson, Yoichiro Kamatani, Stephanie Debette, Martin Dichgans
Stroke has multiple etiologies, but the underlying genes and pathways are largely unknown. We conducted a multiancestry genome-wide-association meta-analysis in 521,612 individuals (67,162 cases and 454,450 controls) and discovered 22 new stroke risk loci, bringing the total to 32. We further found shared genetic variation with related vascular traits, including blood pressure, cardiac traits, and venous thromboembolism, at individual loci (n = 18), and using genetic risk scores and linkage-disequilibrium-score regression...
April 2018: Nature Genetics
https://www.readbyqxmd.com/read/29460445/microvesicles-in-hepatic-and-peripheral-vein-can-predict-nonresponse-to-corticosteroid-therapy-in-severe-alcoholic-hepatitis
#17
S Sukriti, J S Maras, C Bihari, S Das, A K Vyas, S Sharma, S Hussain, S Shasthry, A Choudhary, M Premkumar, D Kumar, G Kumar, C Mukhopadhyay, A Kumar, N Trehanpati, P E Rautou, R Moreau, S K Sarin
BACKGROUND: Severe alcoholic hepatitis patients have high mortality and limited response to corticosteroids. Microvesicles reflect cellular stress and disease conditions. AIMS: To investigate whether microvesicles are associated with severity, response to steroid therapy and inflammation in severe alcoholic hepatitis. METHODS: Microvesicles originating from different cells were studied pre-therapy in 101 patients; (71 responder to corticosteroid therapy and 30 nonresponders) and 20 healthy controls...
April 2018: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/29432916/e-cigarette-advertising-exposure-in-e-cigarette-na%C3%A3-ve-adolescents-and-subsequent-e-cigarette-use-a-longitudinal-cohort-study
#18
Deepa Camenga, Kevin M Gutierrez, Grace Kong, Dana Cavallo, Patricia Simon, Suchitra Krishnan-Sarin
OBJECTIVE: Electronic (E-) cigarettes are one of the most popular tobacco products used by adolescents today. This study examined whether exposure to advertisements in (1) social networking sites (Facebook, Twitter, YouTube, Pinterest/Google Plus), (2) traditional media (television/radio, magazines, billboards), or (3) retail stores (convenience stores, mall kiosks, tobacco shops) was associated with subsequent e-cigarette use in a longitudinal cohort of adolescents. METHODS: Data were drawn from longitudinal surveys conducted in fall 2013 (wave 1) and spring 2014 (wave 2) of a school-based cohort attending 3 high schools and 2 middle schools in Connecticut...
June 2018: Addictive Behaviors
https://www.readbyqxmd.com/read/29411963/metal-organic-framework-modified-glass-substrate-for-analysis-of-highly-volatile-chemical-warfare-agents-by-paper-spray-mass-spectrometry
#19
Elizabeth S Dhummakupt, Daniel O Carmany, Phillip M Mach, Trenton M Tovar, Ann M Ploskonka, Paul S Demond, Jared B DeCoste, Trevor Glaros
Paper spray mass spectrometry has been shown to successfully analyze chemical warfare agent (CWA) simulants. However, due to the volatility differences between the simulants and real G-series (i.e., sarin, soman) CWAs, analysis from an untreated paper substrate proved difficult. To extend the analytical lifetime of these G-agents, metal-organic frameworks (MOFs) were successfully integrated onto the paper spray substrates to increase adsorption and desorption. In this study, several MOFs and nanoparticles were tested to extend the analytical lifetimes of sarin, soman, and cyclosarin on paper spray substrates...
March 7, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29400712/noncanonical-hedgehog-pathway-activation-through-srf-mkl1-promotes-drug-resistance-in-basal-cell-carcinomas
#20
Ramon J Whitson, Alex Lee, Nicole M Urman, Amar Mirza, Catherine Y Yao, Alexander S Brown, Jiang R Li, Gautam Shankar, Micah A Fry, Scott X Atwood, Eunice Y Lee, S Tyler Hollmig, Sumaira Z Aasi, Kavita Y Sarin, Matthew P Scott, Ervin H Epstein, Jean Y Tang, Anthony E Oro
Hedgehog pathway-dependent cancers can escape Smoothened (SMO) inhibition through mutations in genes encoding canonical hedgehog pathway components; however, around 50% of drug-resistant basal cell carcinomas (BCCs) lack additional variants of these genes. Here we use multidimensional genomics analysis of human and mouse drug-resistant BCCs to identify a noncanonical hedgehog activation pathway driven by the transcription factor serum response factor (SRF). Active SRF along with its coactivator megakaryoblastic leukemia 1 (MKL1) binds DNA near hedgehog target genes and forms a previously unknown protein complex with the hedgehog transcription factor glioma-associated oncogene family zinc finger-1 (GLI1), causing amplification of GLI1 transcriptional activity...
March 2018: Nature Medicine
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