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https://www.readbyqxmd.com/read/28538875/particular-characteristics-of-atopic-eczema-in-tropical-environments-the-tropical-environment-control-for-chronic-eczema-and-molecular-assessment-teccema-cohort-study
#1
Jorge Sánchez, Andrés Sánchez, Ricardo Cardona
Background: Atopic dermatitis is a prevalent health problem in the world. Allergic sensitization is an important risk factor, but the roles of other factors, inherent in tropic region, are unknown. Objective: A cohort study was designed in a tropical city to investigate molecular and environmental risk factors for eczema, considering as particular features perennial exposure to mites, poor living conditions and others tropical characteristics. Methods: 433 patients were included at baseline and biological samples were collected during 24 months of follow-up...
March 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28538684/magnetic-nanoparticles-for-antibiotics-detection
#2
REVIEW
Cecilia Cristea, Mihaela Tertis, Ramona Galatus
Widespread use of antibiotics has led to pollution of waterways, potentially creating resistance among freshwater bacterial communities. Microorganisms resistant to commonly prescribed antibiotics (superbug) have dramatically increased over the last decades. The presence of antibiotics in waters, in food and beverages in both their un-metabolized and metabolized forms are of interest for humans. This is due to daily exposure in small quantities, that, when accumulated, could lead to development of drug resistance to antibiotics, or multiply the risk of allergic reaction...
May 24, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28537935/cardiovascular-toxicity-of-abacavir-a-clinical-controversy-in-need-of-a-pharmacological-explanation
#3
Angeles Alvarez, Samuel Orden, Isabel Andújar, Victor Collado-Diaz, Sara Núñez-Delgado, Maria Jose Galindo, Vicente Estrada, Nadezda Apostolova, Juan V Esplugues
: There is a long-lasting controversy surrounding an association between Abacavir (ABC) and an increased risk of cardiovascular (CV) disease in HIV-positive subjects. While differing in their specifics, a number of published cohort studies and clinical trials support such an association, usually relating it to recent exposure to the drug, independently of traditional predisposing factors. However, other clinical trials have failed to reveal such a relation, and have pointed to methodological differences to explain discrepancies...
May 23, 2017: AIDS
https://www.readbyqxmd.com/read/28537883/preclinical-characterization-of-abemaciclib-in-hormone-receptor-positive-breast-cancer
#4
Raquel Torres-Guzmán, Bruna Calsina, Ana Hermoso, Carmen Baquero, Beatriz Alvarez, Joaquín Amat, Ann M McNulty, Xueqian Gong, Karsten Boehnke, Jian Du, Alfonso de Dios, Richard P Beckmann, Sean Buchanan, María José Lallena
Abemaciclib is an ATP-competitive, reversible kinase inhibitor selective for CDK4 and CDK6 that has shown antitumor activity as a single agent in hormone receptor positive (HR+) metastatic breast cancer in clinical trials. Here, we examined the mechanistic effects of abemaciclib treatment using in vitro and in vivo breast cancer models. Treatment of estrogen receptor positive (ER+) breast cancer cells with abemaciclib alone led to a decrease in phosphorylation of Rb, arrest at G1, and a decrease in cell proliferation...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537880/biological-effects-and-epidemiological-consequences-of-arsenic-exposure-and-reagents-that-can-ameliorate-arsenic-damage-in-vivo
#5
REVIEW
Chinthalapally V Rao, Sanya Pal, Altaf Mohammed, Mudassir Farooqui, Mark P Doescher, Adam S Asch, Hiroshi Y Yamada
Through contaminated diet, water, and other forms of environmental exposure, arsenic affects human health. There are many U.S. and worldwide "hot spots" where the arsenic level in public water exceeds the maximum exposure limit. The biological effects of chronic arsenic exposure include generation of reactive oxygen species (ROS), leading to oxidative stress and DNA damage, epigenetic DNA modification, induction of genomic instability, and inflammation and immunomodulation, all of which can initiate carcinogenesis...
May 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28537708/nonsynonymous-polymorphisms-in-the-human-as3mt-arsenic-methylation-gene-implications-for-arsenic-toxicity
#6
Jiaojiao Li, Charles Packianathan, Toby G Rossman, Barry P Rosen
Arsenic methylation, the primary biotransformation in the human body, is catalyzed by the enzyme As(III) S-adenosylmethionine (SAM) methyltransferases (hAS3MT). This process is thought to be protective from acute high-level arsenic exposure. However, with long term low-level exposure, hAS3MT produces intracellular methylarsenite (MAs(III)) and dimethylarsenite (DMAs(III)), which are considerably more toxic than inorganic As(III) and may contribute to arsenic-related diseases. Several single nucleotide polymorphisms (SNPs) in putative regulatory elements of the hAS3MT gene have been shown to be protective...
May 24, 2017: Chemical Research in Toxicology
https://www.readbyqxmd.com/read/28535665/l1-cell-adhesion-molecule-promotes-migration-and-invasion-via-jnk-activation-in-extrahepatic-cholangiocarcinoma-cells-with-activating-kras-mutation
#7
Haejung Kim, Haein Hwang, Hansoo Lee, Hyo Jeong Hong
Extrahepatic cholangiocarcinoma (ECC), a malignant tumor of biliary origin, has a poor prognosis with limited treatment options. The KRAS oncogene is the most commonly mutated gene in ECC and one of the factors that predicts a poor prognosis and low survival rate. L1 cell adhesion molecule (L1CAM) is expressed in ECC cells and acts as an independent poor prognostic factor in predicting patient survival. In this study we investigate the functional significance of L1CAM in ECC cells with activating KRAS mutation...
May 24, 2017: Molecules and Cells
https://www.readbyqxmd.com/read/28535567/radiation-dose-and-procedure-time-for-994-ct-guided-spine-pain-control-procedures
#8
Matthew S Lazarus, Rebecca B Forman, Alan L Brook, Todd S Miller
BACKGROUND: Image guidance for spine pain control procedures, including epidural steroid injection, nerve root block, and facet block, can be performed with either computed tomography (CT) or conventional fluoroscopy. CT has the advantage of improved anatomic localization and use of air for contrast; however, there are concerns that CT leads to higher radiation dose and longer procedure time. OBJECTIVE: To evaluate procedure time and radiation dose for multiple types of spine pain control procedures performed under CT guidance...
May 2017: Pain Physician
https://www.readbyqxmd.com/read/28535465/altered-glycometabolism-in-zebrafish-exposed-to-thifluzamide
#9
Yang Yang, Wenxian Liu, Dongzhi Li, Le Qian, Bin Fu, Chengju Wang
Thifluzamide exerts toxic effects to zebrafish and causes liver mitochondrial damage. To better understand the further mechanism, adult zebrafish were exposed to a range of thifluzamide concentrations (0, 0.019, 0.19, and 1.90 mg/L) for 28 days. In response to 1.90 mg/L exposure, liver glycogen significantly increased and blood glucose decreased. The expression of genes related to glycometabolism showed corresponding changes. Genes related to mtDNA replication and transcription and genes participating in mitochondrial complexes showed altered expression, which might lead to the inhibition of the tricarboxylic acid cycle (TCA)...
May 10, 2017: Chemosphere
https://www.readbyqxmd.com/read/28535425/prenatal-ambient-air-pollution-exposure-infant-growth-and-placental-mitochondrial-dna-content-in-the-inma-birth-cohort
#10
Diana B P Clemente, Maribel Casas, Bram G Janssen, Aitana Lertxundi, Loreto Santa-Marina, Carmen Iñiguez, Sabrina Llop, Jordi Sunyer, Mònica Guxens, Tim S Nawrot, Martine Vrijheid
BACKGROUND: The association between prenatal air pollution exposure and postnatal growth has hardly been explored. Mitochondrial DNA (mtDNA), as a marker of oxidative stress, and growth at birth can play an intermediate role in this association. OBJECTIVE: In a subset of the Spanish birth cohort INMA we assessed first whether prenatal nitrogen dioxide (NO2) exposure is associated with infant growth. Secondly, we evaluated whether growth at birth (length and weight) could play a mediating role in this association...
May 20, 2017: Environmental Research
https://www.readbyqxmd.com/read/28535255/tea-and-coffee-consumption-in-relation-to-dna-methylation-in-four-european-cohorts
#11
Weronica E Ek, Elmar W Tobi, Muhammad Ahsan, Erik Lampa, Erica Ponzi, Soterios A Kyrtopoulos, Panagiotis Georgiadis, L H Lumey, Bastiaan T Heijmans, Maria Botsivali, Ingvar A Bergdahl, Torgny Karlsson, Mathias Rask-Andersen, Domenico Palli, Erik Ingelsson, Åsa K Hedman, Lena M Nilsson, Paolo Vineis, Lars Lind, James M Flanagan, Åsa Johansson
Lifestyle factors, such as food choices and exposure to chemicals, can alter DNA methylation and lead to changes in gene activity. Two such exposures with pharmacologically active components are coffee and tea consumption. Both coffee and tea has been suggested to play an important role in modulating disease-risk in humans by suppressing tumour progression, decreasing inflammation and influencing estrogen metabolism. These mechanisms may be mediated by changes in DNA methylation.To investigate if DNA methylation in blood is associated with coffee and tea consumption we performed a genome-wide DNA methylation study for coffee and tea consumption in four European cohorts (N = 3,096)...
May 23, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28535209/aromatic-dna-adducts-and-breast-cancer-risk-a-case-cohort-study-within-the-epic-spain
#12
Antonio Agudo, Marco Peluso, Armelle Munnia, Leila Luján-Barroso, Aurelio Barricarte, Pilar Amiano, Carmen Navarro, María-José Sánchez, J Ramón Quirós, Eva Ardanaz, Nerea Larrañaga, María-José Tormo, María-Dolores Chirlaque, Miguel Rodríguez-Barranco, Emilio Sánchez-Cantalejo, Filippo Cellai, Catalina Bonet, Núria Sala, Carlos A González
Epidemiologic evidence linking environmental exposure to polycyclic aromatic hydrocarbons (PAH) with breast cancer is limited. Measurement of DNA adducts formed by aromatic compounds, including PAH, has been carried in breast tissue samples and white blood cells from women with breast cancer and different kinds of controls. However, these studies provide inconsistent results and bias cannot be ruled out. During the 7-year follow-up period, 305 women were diagnosed with first primary breast cancer in the EPIC-Spain cohort, and were compared with a sample of 149 women without breast cancer at recruitment, using a case-cohort approach...
May 23, 2017: Carcinogenesis
https://www.readbyqxmd.com/read/28534889/hiv-1-infection-in-persons-homozygous-for-ccr5-%C3%AE-32-allele-the-next-case-and-the-review
#13
Joanna Smoleń-Dzirba, Magdalena Rosińska, Janusz Janiec, Marek Beniowski, Mariusz Cycoń, Jolanta Bratosiewicz-Wąsik, Tomasz J Wąsik
CC-chemokine receptor 5 serves as the coreceptor for the HIV-1 R5 strains, which are responsible for the majority of HIV transmissions. A deletion of 32 nucleotides in the gene encoding this receptor (termed CCR5-Δ32) leads to the suppression of CC-chemokine receptor 5 presentation at the cell surface, thus impeding process of HIV entry into the cell. Individuals homozygous for the CCR5-Δ32 allele are resistant to infection with HIV-1 R5 strains, and are extremely rare among HIV-1-infected individuals. We have described a case of person homozygous for CCR5-Δ32, who was infected with subtype B HIV-1...
May 23, 2017: AIDS Reviews
https://www.readbyqxmd.com/read/28534578/photolysis-and-cellular-toxicities-of-the-organic-ultraviolet-filter-chemical-octyl-methoxycinnamate-and-its-photoproducts
#14
Hannah V Stein, Courtney J Berg, Jessica N Maung, Lauren E O'Connor, Alexandra E Pagano, Laura A MacManus-Spencer, Margot G Paulick
Organic ultraviolet filter chemicals (UVFCs) are the active ingredients used in many sunscreens to protect the skin from UV light; these chemicals have been detected in numerous aquatic environments leading to concerns about how they might affect aquatic organisms and humans. One commonly used organic UVFC is octyl methoxycinnamate (OMC), better known by its commercial name, octinoxate. Upon exposure to UV light, OMC degrades rapidly, forming numerous photoproducts, some of which have been previously identified...
May 23, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28534097/increased-hpa-axis-activity-and-serum-tryptophan-in-naswar-dipping-tobacco-users-a-case-control-study
#15
Faiza Sajid, Samina Bano
Nicotine is the principal addictive agent present in Naswar, a smokeless dipping tobacco product. 5-Hydroxytryptamine (5-HT) has been implicated in the reinforcement properties of nicotine. Also, the hypothalamic-pituitary-adrenal (HPA) axis is of vital importance in evaluating the response to stress and nicotine addiction. The study aimed to evaluate serum tryptophan and cortisol levels in Naswar users in relation to addiction. Additionally, serum cotinine levels were also determined to assess daily nicotine exposure...
May 22, 2017: Applied Psychophysiology and Biofeedback
https://www.readbyqxmd.com/read/28534073/surgical-treatment-of-intraforaminal-extraforaminal-lumbar-disc-herniations-many-approaches-for-few-surgical-routes
#16
REVIEW
Giorgio Lofrese, Lorenzo Mongardi, Francesco Cultrera, Giorgio Trapella, Pasquale De Bonis
BACKGROUND: Several disc disease nomenclatures and approaches for LDH exist. The traditional midline bone-destructive procedures together with approaches requiring extreme muscular retraction are being replaced by muscle sparing, targeted, stability-preserving surgical routes. The increasing speculation on LDHs and the innovative corridors described to treat them have lead to an extensive production of papers frequently treating the same topic but adopting different terminologies and reporting contradictory results...
May 22, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28533937/a-phase-one-single-dose-open-label-clinical-safety-and-pet-mr-imaging-study-of-68-ga-dotatoc-in-healthy-volunteers
#17
Shadi A Esfahani, Stephanie Salcedo, Pedram Heidari, Onofrio A Catalano, Rachel Pauplis, Jacob Hesterman, James F Kronauge, Umar Mahmood
This prospective pilot study provides a dynamic whole body PET/MR image database, clinical safety, biodistribution profile and dosimetry of (68)Ga-DOTATOC in healthy subjects, to establish a baseline and standard reference for its use in diagnosis and treatment response evaluation among patients with somatostatin receptor expressing neoplastic diseases. Dynamic whole body PET/MR imaging was performed in 12 healthy subjects (male/female: 8/4) after injection of 242.39 ± 53.38 MBq (mean ± SD) (68)Ga-DOTATOC...
2017: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28533783/progress-on-azadirachta-indica-based-biopesticides-in-replacing-synthetic-toxic-pesticides
#18
REVIEW
Suman Chaudhary, Rupinder K Kanwar, Alka Sehgal, David M Cahill, Colin J Barrow, Rakesh Sehgal, Jagat R Kanwar
Over the years, extensive use of commercially available synthetic pesticides against phytophagous insects has led to their bioaccumulation in the environment causing increased resistance and reduction in soil biodiversity. Further, 90% of the applied pesticides enter the various environmental resources as a result of run-off, exposing the farmers as well as consumers of the agricultural produce to severe health issues. Therefore, growing attention has been given toward the development of alternate environmentally friendly pesticides/insecticides that would aid an efficient pest management system and also prevent chronic exposures leading to diseases...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28532657/mechanistic-link-between-diesel-exhaust-particles-and-respiratory-reflexes
#19
Ryan K Robinson, Mark A Birrell, John J Adcock, Michael A Wortley, Eric D Dubuis, Shu Chen, Catriona M McGilvery, Sheng Hu, Milo Sp Shaffer, Sara J Bonvini, Sarah A Maher, Ian S Mudway, Alexandra E Porter, Chris Carlsten, Teresa D Tetley, Maria G Belvisi
BACKGROUND: Diesel exhaust particles (DEP) are a major component of particulate matter in Europe's largest cities and epidemiological evidence links exposure with respiratory symptoms and asthma exacerbations. Respiratory reflexes are responsible for symptoms and are regulated by vagal afferent nerves which innervate the airway. It is not known how DEP exposure activates airway afferents to elicit symptoms such as cough and bronchospasm. OBJECTIVE: To identify the mechanisms involved in the activation of airway sensory afferents by DEPs...
May 19, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28532437/management-of-kounis-syndrome-two-case-reports
#20
Majdi Omri, Hajer Kraiem, Olfa Mejri, Mounir Naija, Naoufel Chebili
BACKGROUND: Kounis syndrome corresponds to the occurrence of myocardial injury following an allergic insult. This syndrome is infrequent, and is not well known. In consequence, it is usually misdiagnosed leading to inappropriate treatment. The current literature is limited to case studies and there are no international recommendations concerning this topic. CASE PRESENTATION: We discussed, through two case reports, the clinical presentation and the management of a 60-year-old North African man and a 45-year-old North African man presenting with chest pain suggesting acute coronary syndrome following anaphylactic reaction...
May 23, 2017: Journal of Medical Case Reports
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