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https://www.readbyqxmd.com/read/28645136/childhood-traumatic-experiences-and-the-association-with-marijuana-and-cocaine-use-in-adolescence-through-adulthood
#1
Joy D Scheidell, Kelly Quinn, Susan P McGorray, B Christopher Frueh, Nisha N Beharie, Linda B Cottler, Maria R Khan
BACKGROUND AND AIMS: Examination of longitudinal relationships between childhood traumatic experiences and drug use across the life-course at the national level, with control of confounding by other forms of trauma, is needed. We aimed to estimate the prevalence of nine typologies of childhood traumas and the cumulative number experienced, correlation between traumas, and associations between individual and cumulative number of traumas with drug use during adolescence, emerging adulthood, and adulthood...
June 23, 2017: Addiction
https://www.readbyqxmd.com/read/28645092/examining-effectiveness-of-tailorable-computer-assisted-therapy-programmes-for-substance-misuse-programme-usage-and-clinical-outcomes-data-from-breaking-free-online
#2
Sarah Elison, Andrew Jones, Jonathan Ward, Glyn Davies, Stephanie Dugdale
RATIONALE: When evaluating complex, tailorable digital behavioural interventions, additional approaches may be required alongside established methodologies such as randomised controlled trials (RCTs). Research evaluating a computer-assisted therapy (CAT) programme for substance misuse, Breaking Free Online (BFO), is informed by Medical Research Council (MRC) guidance recommending examination of 'mechanisms of action' of individual intervention strategies, which is relevant when evaluating digital interventions with content that may evolve over time...
May 23, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28645083/graphene-oxide-nanosheets-induce-dna-damage-and-activate-the-base-excision-repair-ber-signaling-pathway-both-in%C3%A2-vitro-and-in%C3%A2-vivo
#3
Chun-Jiao Lu, Xue-Feng Jiang, Muhammad Junaid, Yan-Bo Ma, Pan-Pan Jia, Hua-Bin Wang, De-Sheng Pei
Graphene oxide (GO) has widespread concerns in the fields of biological sciences and medical applications. Currently, studies have reported that excessive GO exposure can cause cellular DNA damage through reactive oxygen species (ROS) generation. However, DNA damage mediated response of the base excision repair (BER) pathway due to GO exposure is not elucidated yet. Therefore, we exposed HEK293T cells and zebrafish embryos to different concentrations of GO for 24 h, and transcriptional profiles of BER pathway genes, DNA damage, and cell viability were analyzed both in vitro and in vivo...
June 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28644913/supplement-2-for-the-2004-update-of-the-aapm-task-group-no-43-report-joint-recommendations-by-the-aapm-and-gec-estro
#4
Mark J Rivard, Facundo Ballester, Wayne M Butler, Larry A DeWerd, Geoffrey S Ibbott, Ali S Meigooni, Christopher S Melhus, Michael G Mitch, Ravinder Nath, Panagiotis Papagiannis
Since publication of the 2004 update to the American Association of Physicists in Medicine (AAPM) Task Group No. 43 Report (TG-43U1) and its 2007 supplement (TG-43U1S1), several new low-energy photon-emitting brachytherapy sources have become available. Many of these sources have satisfied the AAPM prerequisites for routine clinical purposes and are posted on the Brachytherapy Seed Registry managed jointly by the AAPM and the Imaging and Radiation Oncology Core Houston Quality Assurance Center (IROC Houston)...
June 23, 2017: Medical Physics
https://www.readbyqxmd.com/read/28644897/trpa1-and-trpv1-contribute-to-propofol-mediated-antagonism-of-u46619-induced-constriction-in-murine-coronary-arteries
#5
Pritam Sinharoy, Ian N Bratz, Sayantani Sinha, Loral E Showalter, Spencer R Andrei, Derek S Damron
BACKGROUND: Transient receptor potential (TRP) ion channels have emerged as key components contributing to vasoreactivity. Propofol, an anesthetic is associated with adverse side effects including hypotension and acute pain upon infusion. Our objective was to determine the extent to which TRPA1 and/or TRPV1 ion channels are involved in mediating propofol-induced vasorelaxation of mouse coronary arterioles in vitro and elucidate the potential cellular signal transduction pathway by which this occurs...
2017: PloS One
https://www.readbyqxmd.com/read/28644875/estimation-of-the-optimal-dosing-regimen-of-escitalopram-in-dogs-a-dose-occupancy-study-with-11c-dasb
#6
Olivia Taylor, Nick Van Laeken, Ingeborgh Polis, Robrecht Dockx, Lise Vlerick, Andre Dobbeleir, Ingeborg Goethals, Jimmy Saunders, Nele Sadones, Chris Baeken, Filip De Vos, Kathelijne Peremans
Although the favourable characteristics of escitalopram as being the most selective serotonin reuptake inhibitor and having an increased therapeutic efficacy via binding on an additional allosteric binding site of the serotonin transporter, its dosing regimen has not yet been optimized for its use in dogs. This study aimed to estimate the optimal dosing frequency and the required dose for achieving 80% occupancy of the serotonin transporters in the basal ganglia. The dosing frequency was investigated by determining the elimination half-life after a four day oral pre-treatment period with 0...
2017: PloS One
https://www.readbyqxmd.com/read/28644774/cd33-splicing-polymorphism-determines-gemtuzumab-ozogamicin-response-in-de-novo-acute-myeloid-leukemia-report-from-randomized-phase-iii-children-s-oncology-group-trial-aaml0531
#7
Jatinder K Lamba, Lata Chauhan, Miyoung Shin, Michael R Loken, Jessica A Pollard, Yi-Cheng Wang, Rhonda E Ries, Richard Aplenc, Betsy A Hirsch, Susana C Raimondi, Roland B Walter, Irwin D Bernstein, Alan S Gamis, Todd A Alonzo, Soheil Meshinchi
Purpose Gemtuzumab ozogamicin (GO), a CD33-targeted immunoconjugate, is a re-emerging therapy for acute myeloid leukemia (AML). CD33 single nucleotide polymorphism rs12459419 C>T in the splice enhancer region regulates the expression of an alternatively spliced CD33 isoform lacking exon2 (D2-CD33), thus eliminating the CD33 IgV domain, which is the antibody-binding site for GO, as well as diagnostic immunophenotypic panels. We aimed to determine the impact of the genotype of this splicing polymorphism in patients with AML treated with GO-containing chemotherapy...
June 23, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28644726/cytotoxic-and-genotoxic-actions-of-casiopeina-iii-ea-cas-iii-ea-in-somatic-and-germ-cells-of-drosophila-melanogaster
#8
L M Vidal, E Pimentel, M P Cruces, S Hernández, L Ruiz-Azuara
Casiopeinas® are a group of newly synthesized drugs designed to treat cancer. These copper (Cu) complexes exhibit cytostatic, cytotoxic, genotoxic, and antineoplastic activities through different mechanisms of action. To evaluate the influence of these compounds, some in vivo studies were performed using predominantly somatic cells. The aim of the present study was to examine the cytotoxic and genotoxic actions of Casiopeina III-Ea (Cas III-Ea) in somatic as well as germ cells of Drosophila melanogaster. For cytotoxicity, the productivity and some morphometric parameters were measured and genotoxicity was assessed by means of the somatic mutation and recombination test assay in the wing...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28644724/modeling-long-term-effects-attributed-to-nitrogen-dioxide-no2-and-sulfur-dioxide-so2-exposure-on-asthma-morbidity-in-a-nationwide-cohort-in-israel
#9
N Greenberg, R S Carel, E Derazne, A Tiktinsky, D Tzur, B A Portnov
Studies have provided extensive documentation that acutely elevated environmental exposures contribute to chronic health problems. However, only attention has been paid to the effects of modificate of exposure assessment methods in environmental health investigations, leading to uncertainty and gaps in our understanding of exposure- and dose-response relationships. The goal of the present study was to evaluate whether average or peak concentration exerts a greater influence on asthma outcome, and which of the exposure models may better explain various physiological responses generated by nitrogen dioxide (NO2) or sulfur dioxide (SO2) air pollutants...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28644558/current-understanding-of-cancer-stem-cells-review-of-their-radiobiology-and-role-in-head-and-neck-cancers
#10
REVIEW
Paul Ambrose Reid, Puthenparampil Wilson, Yanrui Li, Loredana Gabriela Marcu, Eva Bezak
Evidence of cancer cells that bear attributes analogous to those of normal stem cells has developed a hierarchical model of cancer's architecture and progression. This subset of cancer stem cells (CSCs) drives the progression and therapy resistance of cancers. Research to identify the phenotypes of these CSCs presents evidence of a subpopulation that is more resistant to therapy and may proliferate in response. Literature shows that CSCs typically represent around 1%-10% of cell populations in head and neck cancer but this proportion may increase in response to a therapeutic radiation dose...
June 23, 2017: Head & Neck
https://www.readbyqxmd.com/read/28644512/association-of-flossing-interdental-cleaning-and-periodontitis-in-adults
#11
M Soledad Cepeda, Rachel Weinstein, Clair Blacketer, Michael Lynch
AIM: Assess the association of flossing with periodontitis. MATERIALS AND METHODS: This was a cross-sectional study using the National Health and Nutrition Examination Survey (NHANES) years 2011-2014. We used three categories of flossing: 0-1, 2-4, and ≥5 days in the past week and the CDC definition of periodontitis. We calculated odds ratios controlling for age, gender, smoking, drinking, income, and dentist visits. RESULTS: A total of 6939 adult subjects were included, 35% flossed ≤1 time a week and 40% had periodontitis...
June 23, 2017: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/28644255/periodic-paralysis-and-encephalopathy-as-initial-manifestations-of-graves-disease-case-report-and-review-of-the-literature
#12
Theocharis Tsironis, Athanasios Tychalas, Dimitrios Kiourtidis, Jannis Kountouras, Georgia Xiromerisiou, Jobst Rudolf, Georgia Deretzi
BACKGROUND: Thyrotoxic periodic paralysis (TPP) is an uncommon complication of Graves' disease, characterized by the triad of acute hypokalemia without total body potassium deficit, episodic muscle paralysis, and thyrotoxicosis. Graves' encephalopathy is an extremely rare form of encephalopathy associated with autoimmune thyroid disease (EAATD), characterized by neuropsychiatric symptoms, increased antithyroid antibodies and cerebrospinal fluid protein concentration, nonspecific electroencephalogram abnormalities, and cortico-responsiveness...
July 2017: Neurologist
https://www.readbyqxmd.com/read/28644233/tyrosine-kinase-inhibitor-vatalanib-inhibits-proliferation-and-migration-of-human-pterygial-fibroblasts
#13
Hong Kyu Kim, Ji-Young Choi, Sang Min Park, Chang Rae Rho, Kyong Jin Cho, Sangmee Ahn Jo
PURPOSE: Vatalanib is a small-molecule tyrosine kinase inhibitor. We investigated the effects of vatalanib on the proliferation and migration of cultured human pterygial fibroblasts (HPFs). METHODS: Pterygium tissues were obtained after pterygium excision surgery and subjected to primary culture. HPFs were treated with vatalanib at various concentrations. Mitomycin C (MMC) was used as a positive control. Cell proliferation and migration assays were used to investigate the effects of vatalanib...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28644232/case-of-presumed-transient-light-sensitivity-syndrome-after-small-incision-lenticule-extraction
#14
Jordan D Desautels, Majid Moshirfar, Tyler S Quist, David F Skanchy, Phillip C Hoopes
PURPOSE: To report the first presumed case of transient light-sensitivity syndrome (TLSS) after small-incision lenticule extraction (SMILE). METHODS: A 27-year-old male patient was treated for severe photophobic symptoms occurring 7 weeks after undergoing a bilateral SMILE procedure. His comprehensive ocular examination was unremarkable and his visual acuity was unaffected. Treatment was a month-long tapering dose of topical steroids. RESULTS: Photophobic symptoms fully resolved after steroid treatment...
June 21, 2017: Cornea
https://www.readbyqxmd.com/read/28644183/more-dose-dependent-side-effects-with-mercaptopurine-over-azathioprine-in-ibd-treatment-due-to-relatively-higher-dosing
#15
Mark M T J Broekman, Marieke J H Coenen, Corine J van Marrewijk, Geert J A Wanten, Dennis R Wong, Andre L M Verbeek, Olaf H Klungel, Piet M Hooymans, Henk-Jan Guchelaar, Hans Scheffer, Luc J J Derijks, Dirk J de Jong
BACKGROUND: There are substantial global differences in the preference for mercaptopurine (MP) or its prodrug azathioprine (AZA) as first-choice thiopurine to treat inflammatory bowel diseases. Studies comparing both agents are scarce. Our aim was to compare AZA and MP in thiopurine-naive patients with inflammatory bowel disease for the frequency of side effects and efficacy. METHODS: Post hoc analysis of the "Thiopurine response Optimization by Pharmacogenetic testing in Inflammatory bowel disease Clinics" (TOPIC) trial, in which thiopurine-naive patients with inflammatory bowel disease with an indication for a thiopurine were randomized for a genotype-based dose versus standard of care...
June 20, 2017: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/28644085/pharmacokinetics-of-a-sustained-release-formulation-of-buprenorphine-after-intramuscular-and-subcutaneous-administration-to-american-kestrels-falco-sparverius
#16
David Sanchez-Migallon Guzman, Heather K Knych, Glenn H Olsen, Joanne R Paul-Murphy
Previous studies have validated the clinical use of opioids with μ-receptor affinities for pain management in raptors. Buprenorphine appears to have a longer duration of action and minimal adverse effects when compared to other opioids in American kestrels ( Falco sparverius ). To determine the pharmacokinetics of a sustained release formulation of buprenorphine in kestrels, we administered a commercially available product (Buprenorphine SR-LAB; Wildlife Pharmaceuticals, Windsor, CO, USA) intramuscularly and subcutaneously to adult kestrels in a partial-crossover experimental design study...
June 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/28643897/a-novel-amino-acid-substitution-trp574arg-in-als-confers-broad-resistance-to-als-inhibiting-herbicides-in-crabgrass-digitaria-sanguinalis
#17
Jian Li, Mei Li, Xingxiang Gao, Feng Fang
BACKGROUND: Crabgrass (Digitaria sanguinalis) is an annual monocotyledonous weed. In recent years, field applications of nicosulfuron have been ineffective in controlling crabgrass populations in Shandong Province, China. To investigate the resistance mechanisms to nicosulfuron in crabgrass populations, the acetolactate synthase (ALS) gene fragment covering known resistance-confering mutation sites was amplified and sequenced. RESULTS: Dose-response experiments suggested that the resistant population SD13 (R) was highly resistant to nicosulfuron (resistance index R/S = 43...
June 23, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28643892/calcitriol-exerts-an-anti-tumor-effect-in-osteosarcoma-by-inducing-the-endoplasmic-reticulum-er-stress-response
#18
Takatsune Shimizu, Walied A Kamel, Sayaka Yamaguchi-Iwai, Yumi Fukuchi, Akihiro Muto, Hideyuki Saya
Osteosarcoma is the most common type of primary bone tumor, and novel therapeutic approaches for this disease are urgently required. To identify effective agents, we screened a panel of FDA-approved drugs in AXT cells, our newly established mouse osteosarcoma line, and identified calcitriol as a candidate compound with therapeutic efficacy for this disease. Calcitriol inhibited cell proliferation in AXT cells by blocking cell cycle progression. From a mechanistic standpoint, calcitriol induced endoplasmic reticulum (ER) stress, which was potentially responsible for downregulation of cyclin D1, activation of p38 MAPK, and intracellular production of reactive oxygen species (ROS)...
June 23, 2017: Cancer Science
https://www.readbyqxmd.com/read/28643857/ceria-zirconia-nanoparticles-as-enhanced-multi-antioxidant-for-sepsis-treatment
#19
Min Soh, Dong-Wan Kang, Han-Gil Jeong, Dokyoon Kim, Do Yeon Kim, Wookjin Yang, Changyeong Song, Seungmin Baik, In-Young Choi, Seul-Ki Ki, Hyek Jin Kwon, Taeho Kim, Chi Kyung Kim, Seung-Hoon Lee, Taeghwan Hyeon
The two oxidation states of ceria nanoparticles, Ce3+ and Ce4+, play a pivotal role in scavenging reactive oxygen species (ROS). In particular, Ce3+ is largely responsible for removing O2- and *OH that are associated with inflammatory response and cell death. Here, we report the synthesis of 2 nm ceria-zirconia nanoparticles (CZ NPs) that possess a higher Ce3+/Ce4+ ratio and faster conversion from Ce4+ to Ce3+ than those exhibited by ceria nanoparticles. The obtained Ce0.7Zr0.3O2 (7CZ) NPs greatly improve ROS scavenging performance, thus regulating inflammatory cells in a very low dose...
June 23, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28643852/therapeutic-d2-3-receptor-occupancies-and-response-with-low-amisulpride-blood-concentrations-in-very-late-onset-schizophrenia-like-psychosis-vloslp
#20
Suzanne Reeves, Kate Eggleston, Elizabeth Cort, Emma McLachlan, Stuart Brownings, Akshay Nair, Suki Greaves, Alan Smith, Joel Dunn, Paul Marsden, Robert Kessler, David Taylor, Julie Bertrand, Robert Howard
OBJECTIVE: Antipsychotic drug sensitivity in very late-onset schizophrenia-like psychosis (VLOSLP) is well documented, but poorly understood. This study aimed to investigate blood drug concentration, D2/3 receptor occupancy and outcome in VLOSLP during open amisulpride prescribing, and compare this with Alzheimer's disease (AD). METHODS: Blood drug concentration, prolactin, symptoms and extrapyramidal side-effects (EPS) were serially assessed during dose titration...
June 23, 2017: International Journal of Geriatric Psychiatry
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