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https://www.readbyqxmd.com/read/28101842/violence-exposure-subtypes-differentially-mediate-the-relation-between-callous-unemotional-traits-and-adolescent-delinquency
#1
Carla Oberth, Yao Zheng, Robert J McMahon
Research with children and adolescents has established a link between callous-unemotional (CU) traits and delinquency, as well as a link between violence exposure (witnessing and direct victimization) and diverse negative and antisocial outcomes. Little attention has been paid to investigating the association among CU traits, violence exposure, and various forms of delinquency. Using a sample of 753 adolescents (male =58%; African American =46%), the current study aimed to elucidate the mediating role of violence exposure (measured in grades 7, 8, 10, 11) on the relationship between CU traits measured in grade 7 and later delinquency (i...
January 19, 2017: Journal of Abnormal Child Psychology
https://www.readbyqxmd.com/read/28100678/modulation-of-naive-cd8-t-cell-response-features-by-ligand-density-affinity-and-continued-signaling-via-internalized-tcrs
#2
Renu Balyan, Rupali Gund, Chitra Ebenezer, Jasneet Kaur Khalsa, Divya Anna Verghese, Thyagarajan Krishnamurthy, Anna George, Vineeta Bal, Satyajit Rath, Ashutosh Chaudhry
T cell response magnitudes increase with increasing antigenic dosage. However, it is unclear whether ligand density only modulates the proportions of responding ligand-specific T cells or also alters responses at the single cell level. Using brief (3 h) exposure of TCR-transgenic mouse CD8 T cells in vitro to varying densities of cognate peptide-MHC ligand followed by ligand-free culture in IL-2, we found that ligand density determined the frequencies of responding cells but not the expression levels of the early activation marker molecule, CD69...
January 18, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28100255/early-life-exposure-to-air-pollution-and-greater-use-of-academic-support-services-in-childhood-a-population-based-cohort-study-of-urban-children
#3
Jeanette A Stingone, Katharine H McVeigh, Luz Claudio
BACKGROUND: There is a growing literature showing associations between prenatal and early-life exposure to air pollution and children's neurodevelopment. However, it is unclear if decrements in neurodevelopment observed in epidemiologic research translate into observable functional outcomes in the broader pediatric population. The objective of this study was to examine the association between early-life exposures to common urban air toxics and the use of academic support services, such as early intervention and special education within a population-based cohort of urban children...
January 18, 2017: Environmental Health: a Global Access Science Source
https://www.readbyqxmd.com/read/28097873/hplc-fast-scanning-fluorimetric-detection-determination-of-risk-exposure-to-polycyclic-aromatics-hydrocarbons-biomarkers-in-human-urine
#4
Álvaro Luque-Uría, Anunciación Espinosa-Mansilla, Isabel Durán-Merás
AIM: An HPLC method for the determination of 2-hydroxyfluorene (2-OHF), various hydroxyphenanthrene metabolites (1-, 2-, 3-, 4- and 9-hydroxyphenanthrene, OHPhs), 1-hydroxypyrene (1-OHPy) and 3-hydroxybenzo[a]pyrene (3-OHB[a]Py) in human urine, has been developed using fast scanning fluorimetric detection and gradient elution mode. MATERIALS & METHODS: All reagents were of analytical grade. Standard solutions were prepared separately, by exact weighing or dilution with ultrapure acetonitrile, and were stored at 4 ºC in darkness...
January 18, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28081224/resveratrol-impairs-glioma-stem-cells-proliferation-and-motility-by-modulating-the-wnt-signaling-pathway
#5
Chiara Cilibrasi, Gabriele Riva, Gabriele Romano, Massimiliano Cadamuro, Riccardo Bazzoni, Valentina Butta, Laura Paoletta, Leda Dalprà, Mario Strazzabosco, Marialuisa Lavitrano, Roberto Giovannoni, Angela Bentivegna
Glioblastoma multiforme (GBM) is a grade IV astrocytoma and the most common form of malignant brain tumor in adults. GBM remains one of the most fatal and least successfully treated solid tumors: current therapies provide a median survival of 12-15 months after diagnosis, due to the high recurrence rate. Glioma Stem Cells (GSCs) are believed to be the real driving force of tumor initiation, progression and relapse. Therefore, better therapeutic strategies GSCs-targeted are needed. Resveratrol is a polyphenolic phytoalexin found in fruits and vegetables displaying pleiotropic health benefits...
2017: PloS One
https://www.readbyqxmd.com/read/28079192/differential-cytotoxic-effects-of-graphene-and-graphene-oxide-on-skin-keratinocytes
#6
Marco Pelin, Laura Fusco, Verónica León, Cristina Martín, Alejandro Criado, Silvio Sosa, Ester Vázquez, Aurelia Tubaro, Maurizio Prato
Impressive properties make graphene-based materials (GBMs) promising tools for nanoelectronics and biomedicine. However, safety concerns need to be cleared before mass production of GBMs starts. As skin, together with lungs, displays the highest exposure to GBMs, it is of fundamental importance to understand what happens when GBMs get in contact with skin cells. The present study was carried out on HaCaT keratinocytes, an in vitro model of skin toxicity, on which the effects of four GBMs were evaluated: a few layer graphene, prepared by ball-milling treatment (FLG), and three samples of graphene oxide (GOs, a research-grade GO1, and two commercial GOs, GO2 and GO3)...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28078540/preplanned-safety-analysis-of-the-jfmc37-0801-trial-a-randomized-phase-iii-study-of-six-months-versus-twelve-months-of-capecitabine-as-adjuvant-chemotherapy-for-stage-iii-colon-cancer
#7
Takeshi Suto, Megumi Ishiguro, Chikuma Hamada, Katsuyuki Kunieda, Hiroyuki Masuko, Ken Kondo, Hideyuki Ishida, Genichi Nishimura, Kazuaki Sasaki, Takayuki Morita, Shoichi Hazama, Koutarou Maeda, Hideyuki Mishima, Hideyuki Ike, Sotaro Sadahiro, Kenichi Sugihara, Masazumi Okajima, Shigetoyo Saji, Junichi Sakamoto, Naohiro Tomita
BACKGROUND: Six months of adjuvant chemotherapy is regarded as the standard of care for patients with stage III colon cancer. However, whether longer treatment can improve prognosis has not been fully investigated. We conducted a phase III study comparing 6 and 12 months of adjuvant capecitabine chemotherapy for stage III colon cancer, and report here the results of our preplanned safety analysis. METHODS: Patients aged 20-79 years with curatively resected stage III colon cancer were randomly assigned to receive 8 cycles (6 months) or 16 cycles (12 months) of capecitabine (2500 mg/m(2)/day on days 1-14 of each 21-day cycle)...
January 11, 2017: International Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28076275/atmospheric-fine-particulate-matter-and-breast-cancer-mortality-a-population-based-cohort-study
#8
Giovanna Tagliabue, Alessandro Borgini, Andrea Tittarelli, Aaron van Donkelaar, Randall V Martin, Martina Bertoldi, Sabrina Fabiano, Anna Maghini, Tiziana Codazzi, Alessandra Scaburri, Imma Favia, Alessandro Cau, Giulio Barigelletti, Roberto Tessandori, Paolo Contiero
OBJECTIVES: Atmospheric fine particulate matter (PM2.5) has multiple adverse effects on human health. Global atmospheric levels of PM2.5 increased by 0.55 μg/m(3)/year (2.1%/year) from 1998 through 2012. There is evidence of a causal relationship between atmospheric PM2.5 and breast cancer (BC) incidence, but few studies have investigated BC mortality and atmospheric PM2.5. We investigated BC mortality in relation to atmospheric PM2.5 levels among patients living in Varese Province, northern Italy...
November 14, 2016: BMJ Open
https://www.readbyqxmd.com/read/28075521/association-between-adolescent-sport-activities-and-lumbar-disc-degeneration-among-young-adults
#9
Jani Takatalo, Jaro Karppinen, Simo Näyhä, Simo Taimela, Jaakko Niinimäki, Roberto Blanco Sequeiros, Tuija Tammelin, Juha Auvinen, Osmo Tervonen
The relationship between different sport activities and lumbar intervertebral disc degeneration (DD) is largely unknown. We evaluated whether adolescent participation in different sports is associated with lumbar DD in a population-based birth cohort of young adults. A total of 558 young adults (325 females and 233 males) underwent magnetic resonance imaging (MRI, 1.5-T scanner). A DD sum score, based on the Pfirrmann grading, was calculated for all lumbar levels. The sum score was categorized into no DD, 1, 2, or at least 3...
January 11, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/28073617/district-policies-and-practices-vary-in-their-association-with-adolescents-consumption-of-milk-and-100-fruit-juice
#10
Sarah A Sliwa, Gabrielle F Miller, Nancy D Brener, Sohyun Park, Caitlin L Merlo
PURPOSE: Researchers previously examined the relationship between school beverage policies and sugar-sweetened beverage (SSB) consumption. This study addressed a research gap by examining cross-sectional associations between district-level policies and practices and U.S. high school students' consumption of milk and 100% fruit juice. METHODS: Data from the 2012 School Health Policies and Practices Study and 2013 Youth Risk Behavior Surveillance System were linked for 12 large urban school districts...
January 7, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/28070718/first-in-human-trial-of-an-anti-5t4-antibody-monomethylauristatin-conjugate-pf-06263507-in-patients-with-advanced-solid-tumors
#11
Geoffrey I Shapiro, Ulka N Vaishampayan, Patricia LoRusso, Jeremy Barton, Steven Hua, Steven D Reich, Ronald Shazer, Carrie T Taylor, Dawei Xuan, Hossein Borghaei
Background The antibody-drug conjugate PF-06263507 targets the cell-surface, tumor-associated antigen 5T4 and consists of a humanized IgG1 conjugated to the microtubule-disrupting agent monomethylauristatin-F by a non-cleavable maleimidocaproyl linker. In this first-in-human, dose-finding trial (NCT01891669), we evaluated safety, pharmacokinetics, and preliminary antitumor activity of PF-06263507 in pretreated patients with advanced solid tumors, unselected for 5T4 expression. starting at 0.05 mg/kg, with 25, 56, and 95% dose increments, depending on observed dose-limiting toxicities (DLTs), applying a modified continual reassessment method...
January 9, 2017: Investigational New Drugs
https://www.readbyqxmd.com/read/28070153/internalizing-symptoms-peer-substance-use-and-substance-use-initiation
#12
Sonja E Siennick, Alex O Widdowson, Mathew Woessner, Mark E Feinberg
This study used longitudinal survey and social network data covering sixth through ninth grades to test whether internalizing symptoms make early adolescents more prone to (1) exposure to and (2) influence by substance-using peers. Random effects regressions revealed that increases in symptoms were significantly associated with increases in the proportion of friends who used cigarettes, alcohol, and marijuana; some associations weakened across grades. Event history models revealed that the effect of friends' smoking on smoking initiation decreased as internalizing symptoms increased; symptoms did not moderate the effects of friends' alcohol and marijuana use on alcohol and marijuana use initiation...
December 2016: Journal of Research on Adolescence: the Official Journal of the Society for Research on Adolescence
https://www.readbyqxmd.com/read/28069419/hyperbaric-oxygen-therapy-for-the-prevention-of-arterial-gas-embolism-in-food-grade-hydrogen-peroxide-ingestion
#13
Stephen M Hendriksen, Nicholas L Menth, Bjorn C Westgard, Jon B Cole, Joseph W Walter, Thomas C Masters, Christopher J Logue
Food grade hydrogen peroxide ingestion is a relatively rare presentation to the emergency department. There are no defined guidelines at this time regarding the treatment of such exposures, and providers may not be familiar with the potential complications associated with high concentration hydrogen peroxide ingestions. In this case series, we describe four patients who consumed 35% hydrogen peroxide, presented to the emergency department, and were treated with hyperbaric oxygen therapy. Two of the four patients were critically ill requiring intubation...
December 14, 2016: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28068141/ethnoracial-differences-in-ptsd-symptoms-and-trauma-related-cognitions-in-treatment-seeking-active-duty-military-personnel-for-ptsd
#14
Brittany N Hall-Clark, Antonia N Kaczkurkin, Anu Asnaani, Jody Zhong, Alan L Peterson, Jeffrey S Yarvis, Elisa V Borah, Katherine A Dondanville, Elizabeth A Hembree, Brett T Litz, Jim Mintz, Stacey Young-McCaughan, Edna B Foa
OBJECTIVE: It is uncertain whether ethnoracial factors should be considered by clinicians assessing and treating posttraumatic stress disorder (PTSD) among service members. The purpose of this study was to shed light on ethnoracial variation in the presentation of PTSD symptoms, trauma-related cognitions, and emotions among treatment-seeking active duty military personnel. METHOD: Participants were 303 male active duty military members with PTSD participating in a clinical trial (60% were self-identified as White, 19% as African American, and 21% as Hispanic/Latino)...
January 9, 2017: Psychological Trauma: Theory, Research, Practice and Policy
https://www.readbyqxmd.com/read/28068097/characterization-of-phase-separation-propensity-for-amorphous-spray-dried-dispersions
#15
Daniel McNamara, Shawn Yin, Duohai Pan, George Crull, Peter Timmins, Balvinder Vig
A generalized screening approach, applying isothermal calorimetry at 37°C 100%RH, to formulations of spray dried dispersions (SDDs) for two active pharmaceutical ingredients (APIs) (BMS-903452 and BMS-986034) is demonstrated. APIs 452 and 034, with similar chemotypes, were synthesized and promoted during development for oral dosing. Both APIs were formulated as SDDs for animal exposure studies using the polymer hydroxypropylmethlycellulose acetyl succinate M grade (HPMCAS M). 452 formulated at 30% (wt/wt%) was an extremely robust SDD that was able to withstand 40°C 75%RH open storage conditions for 6 months with no physical evidence of crystallization or loss of dissolution performance...
January 9, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28067709/factors-associated-with-risk-of-neurologic-complications-after-peripheral-nerve-blocks-a-systematic-review
#16
Rakesh V Sondekoppam, Ban C H Tsui
The onset of neurologic complications after regional anesthesia is a complex process and may result from an interaction of host, agent, and environmental risk factors. The purpose of this systematic review was examine the qualitative evidence relating to various risk factors implicated in neurologic dysfunction after peripheral nerve block (PNB). The MEDLINE, OVID, and EMBASE databases were primary sources for literature. Cochrane, LILACS, DARE, IndMed, ERIC, NHS, and HTA via Centre for Reviews and Dissemination (CRD; York University) databases were searched for additional unique results...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28065417/assisted-reproduction-technique-outcomes-for-fresh-versus-deferred-cryopreserved-day-2-embryo-transfer-a-retrospective-matched-cohort-study
#17
Mathilde Bourdon, Pietro Santulli, Vanessa Gayet, Chloé Maignien, Louis Marcellin, Khaled Pocate-Cheriet, Charles Chapron
Ovarian stimulation could adversely affect endometrial receptivity and consequently embryo implantation. One emerging strategy is the 'freeze-all' approach. Most studies have focused on blastocyst transfers, with limited research on day-2 deferred cryopreserved embryo transfers. In this large retrospective cohort study, outcomes were compared between day-2 fresh versus deferred cryopreserved embryo transfers. After matching by age and number of previous cycles, 325 cycles were included in the fresh group and 325 in the deferred cryopreserved embryo transfers group: no significant differences were found between groups in implantation (0...
December 19, 2016: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28058947/the-learning-curve-for-veterinary-surgery-residents-performing-hemilaminectomy-surgeries-in-dogs
#18
Owen T Fink, Raymond C Boston, Tracy Wu, Dorothy Cimino Brown, Jeffrey J Runge
OBJECTIVE To describe the learning curve for veterinary surgery residents performing hemilaminectomy surgeries in dogs. DESIGN Retrospective case review and learning curve evaluation. SAMPLE 13 individuals who completed a 3-year surgery residency program at a university teaching hospital and who had no prior experience performing hemilaminectomies. PROCEDURES The 13 residents performed hemilaminectomies on 399 dogs between July 2006 and July 2013. Medical records were reviewed, and operative time was recorded...
January 15, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28057005/intragenerational-social-mobility-and-functional-somatic-symptoms-in-a-northern-swedish-context-analyses-of-diagonal-reference-models
#19
Frida Jonsson, Miguel San Sebastian, Anne Hammarström, Per E Gustafsson
BACKGROUND: Research indicate that social class mobility could be potentially important for health, but whether this is due to the movement itself or a result of people having been integrated in different class contexts is, to date, difficult to infer. In addition, although several theories suggest that transitions between classes in the social hierarchy can be stressful experiences, few studies have empirically examined whether such movements may have health effects, over and above the implications of "being" in these classes...
January 3, 2017: International Journal for Equity in Health
https://www.readbyqxmd.com/read/28053022/phase-1-study-of-ont-380-a-her2-inhibitor-in-patients-with-her2-advanced-solid-tumors-with-an-expansion-cohort-in-her2-metastatic-breast-cancer-mbc
#20
Stacy Moulder-Thompson, Virginia F Borges, Tara D Baetz, Tessa Mcspadden, Gina Fernetich, Rashmi K Murthy, Renae Chavira, Kari Guthrie, Emma Barrett, Stephen Chia
PURPOSE: ONT-380 (ARRY-380) is a potent and selective oral HER2 inhibitor. This Phase 1 study determined the maximum tolerated dose (MTD), pharmacokinetics (PK) and antitumor activity of ONT-380 in HER2 positive advanced solid tumors, with an expansion cohort of patients with HER2-positive MBC. EXPERIMENTAL DESIGN: ONT-380 was administered twice daily (BID) in continuous 28-day cycles. After a modified 3+3 dose escalation design determined the MTD, the expansion cohort was enrolled...
January 4, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
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