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Itsuko Tsukimura, Hideki Murakami, Makoto Sasaki, Hirooki Endo, Daisuke Yamabe, Ryosuke Oikawa, Minoru Doita
The safety of metallic spinal implants in magnetic resonance imaging (MRI) performed using ultrahigh fields has not been established. Hence, we examined whether the displacement forces caused by a static magnetic field and the heating induced by radiofrequency radiation are substantial for spinal implants in a 7 T field. We investigated spinal rods of various lengths and materials, a screw, and a cross-linking bridge in accordance with the American Society for Testing and Materials guidelines. The displacement forces of the metallic implants in static 7 T and 3 T static magnetic fields were measured and compared...
October 21, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
M C Lardone, F Argandoña, M Flórez, A Parada-Bustamante, M Ebensperger, C Palma, A Piottante, A Castro
Several observational studies have showed a combination of lower testosterone (T) to LH ratio and higher estradiol (E2 ) to T ratio in secretory infertile men compared to men with normal spermatogenesis, suggesting a steroidogenic dysfunction of Leydig cells (Lc) that may involve increased aromatase activity. Low T/LH ratio is associated with Lc hyperplasia, which together with LH hyperstimulation may represent compensation for impaired T production. Aromatase expression and oestrogen production are mainly detected in Lc of the testis, although Sertoli and germ cells also contribute to testicular aromatase activity...
October 21, 2016: Andrology
Elena S Don, Alexandra G Emelyanova, Natalia N Yakovleva, Nataliia V Petrova, Marina V Nikiforova, Evgeniy A Gorbunov, Sergey A Tarasov, Sergey G Morozov, Oleg I Epstein
The assessment of dose-response is an essential part of drug development in terms of the determination of a drug's effective dose, finding the safety endpoint, estimation of the pharmacokinetic profile and even validation of drug activity, especially for therapeutic agents with a principally novel mechanism of action. Drugs based on released-active forms of antibodies are a good example of such a target. In this study, the efficacy of the antiviral drug Anaferon for children (released-active form of antibodies to interferon-gamma) was tested in a dose-dependent manner (at doses of 0...
October 21, 2016: Journal of Medical Virology
Hongfang Zhang, Conghua Xie, Jing Yue, Zhenzhen Jiang, Rongjing Zhou, Ruifei Xie, Yan Wang, Shixiu Wu
Previous studies on the mechanisms underlying ESCC (esophageal squamous cell carcinoma) chemoresistance only focused on tumor cells while tumor microenvironment has been completely ignored. Our study aimed to clarify the effect of CAFs (cancer-associated fibroblasts), one major component of tumor microenvironment, on the chemoresistance of ESCC. By primary culture, two pairs of CAFs and matched NFs (normal fibroblasts) were isolated from tumor tissues of ESCC patients and matched normal esophageal epithelial tissues, respectively...
October 21, 2016: Molecular Carcinogenesis
Douglas B Sponsler, Reed M Johnson
The role of pesticides in recent honey bee losses is controversial, partly because field studies often fail to detect effects predicted by laboratory studies. This dissonance highlights a critical gap in the field of honey bee toxicology: there exists little mechanistic understanding of the patterns and processes of exposure that link honey bees to pesticides in their environment. We submit that 2 key processes underlie honey bee pesticide exposure: (1) the acquisition of pesticide by foraging bees and (2) the in-hive distribution of pesticide returned by foragers...
October 21, 2016: Environmental Toxicology and Chemistry
Collin W Blackburn, Sarah R Vossoughi, Bukola Ojo, Prakash Gorroochurn, Charles C Marboe, Yelena Akelina, Robert J Strauch
Background During microvascular anastomosis, needle placement is facilitated by inserting the tips of the forceps into the lumen of the vessel, rather than grasping and everting the luminal wall, to minimize trauma to the vessel. This study examines whether the vessel wall can be grasped and everted during microvascular anastomosis without compromising surgical outcomes. Methods A total of 20 Sprague-Dawley rats weighing between 252 and 483 g were used. Bilateral anastomoses of the animals' femoral arteries (mean size: 0...
October 21, 2016: Journal of Reconstructive Microsurgery
Felipe Donoso, Helene Engstrand Lilja
Background Since 2005, infants with esophageal atresia (EA) in our unit are given prophylactic proton pump inhibitors (PPI) after repair until 1 year of age. The aims of this study were to identify risk factors for anastomotic strictures (AS) and to assess the efficacy of postoperative PPI prophylaxis in reducing the incidence of AS compared with symptomatic PPI. Methods Patients who underwent EA repair from 1994 to 2013 in our unit were included in this retrospective observational study approved by the local ethics review board...
October 21, 2016: European Journal of Pediatric Surgery
Miguel Couselo, Vicente Ibáñez, Javier Lluna, Juan José Vila
Introduction Low values of esophageal impedance baseline (EIB) have been related to esophagitis. The aim of this study was to evaluate the diagnostic performance of EIB for erosive esophagitis (ErE) and histological esophagitis (HiE) in children studied for gastroesophageal reflux. Material and Methods Children who underwent esophageal multichannel intraluminal impedance-pH monitoring (MII-pH) and upper-endoscopy with esophageal biopsies were studied retrospectively. EIB values were obtained by MII-pH. ErE was assessed by endoscopy following the Hetzel-Dent classification; HiE was defined by basal zone hyperplasia, papillary lengthening, or inflammatory infiltration...
October 21, 2016: European Journal of Pediatric Surgery
Roberta E Rossi, Tara Whyand, Charles D Murray, Mark I Hamilton, Dario Conte, Martyn E Caplin
Inflammatory bowel diseases (IBD) are chronic immune disorders of unclear aetiology. Dietary deficiencies may be a potential pathogenic factor in their development. Patients often take food supplements without knowledge of any evidence base. We have therefore assessed the evidence for food supplementation in the management of IBD. A PubMed search was performed for the terms Inflammatory bowel disease; nutritional deficiencies; dietary supplements; curcumin; green tea; vitamin D/other vitamins; folic acid; iron; zinc; probiotics; andrographis paniculata; and boswellia serrate...
December 2016: European Journal of Gastroenterology & Hepatology
Devin Ganesh, Ben Service, Brian Zirgibel, Kenneth Koval
OBJECTIVES: To assess the utility of the dorsal tangential view (DTV) in detecting intraoperative dorsal screw penetration in distal radius fractures treated with volar locked plating. DESIGN: Retrospective cohort study. SETTING: Academic level 1 trauma center. PATIENTS/PARTICIPANTS: Skeletally mature patients where open reduction internal fixation with volar locked plating was the definitive treatment. A total of twenty-six patients were evaluated...
November 2016: Journal of Orthopaedic Trauma
Christina Gutierrez Bracamontes, Rebecca Lopez-Valdez, Ramadevi Subramani, Arunkumar Arumugam, Sushmita Nandy, Venkatesh Rajamanickam, Vignesh Ravichandran, Rajkumar Lakshmanaswamy
Early parity reduces the risk of breast cancer in women while nulliparity and late parity increase the risk of breast cancer. In order to translate this protection to women where early pregnancy is not feasible, much work has focused on understanding how parity confers protection against breast cancer, the molecular mechanisms by which this occurs is still not well understood. Healthy parous and nulliparous women were recruited for this study. We assessed serum protein profiles of early parous, late parous, and nulliparous women using the Phospho Explorer antibody array...
October 19, 2016: Oncotarget
Shih-Hsin Tu, Yin-Ching Lin, Chi-Cheng Huang, Po-Sheng Yang, Hui-Wen Chang, Chien-Hsi Chang, Chih-Hsiung Wu, Li-Ching Chen, Yuan-Soon Ho
We previously demonstrated that the activation of α9-nicotinic acetylcholine receptor (α9-nAchR) signaling by smoking promotes breast cancer formation. To investigate the downstream signaling molecules involved in α9-nAChR-induced breast tumorigenesis, we used real-time polymerase chain reactions and Western blotting to assess expression of protein phosphatase Mg2+/Mn2+ dependent 1F (PPM1F), a Ser/Thr protein phosphatase, in human breast cancer samples (n=167). Additionally, stable PPM1F-knockdown and -overexpressing cell lines were established to evaluate the function of PPM1F...
October 18, 2016: Oncotarget
Si Chen, Xiaoting Wen, Jing Li, Yuan Li, Liubing Li, Xinping Tian, Hui Yuan, Fengchun Zhang, Yongzhe Li
Takayasu arteritis (TA) is a chronic large-vessel vasculitis of unclear pathogenesis. A recent genome-wide association study (GWAS) has revealed that the FCGR2A/FCGR3A, EEFSEC, RPS9/LILRB3, RIPPLY2 and MLX genes confer susceptibility to TA. We investigated the linkage between presumptive TA-related genes (FCGR2A/FCGR3A, EEFSEC, RPS9/LILRB3, RIPPLY2 and MLX) and TA in the Han Chinese population. We performed a large case-control multi-center study of 412 Han Chinese TA patients and 597 ethnically matched healthy controls...
October 18, 2016: Oncotarget
Ran Ren, Pengpeng Yin, Yan Zhang, Jianyun Zhou, Yixing Zhou, Rufu Xu, Hai Lin, Chunji Huang
BACKGROUND: Several studies have investigated the diagnostic value of fibulin-3 for malignant pleural mesothelioma (MPM), but the results were various. Therefore, we performed a systematic review and meta-analysis to evaluate the diagnostic value of fibulin-3 for MPM. RESULTS: Eight studies were included in this work. The overall sensitivity of blood fibulin-3 were 0.87 (95% CI, 0.58 - 0.97) and 0.89 (95% CI, 0.77 - 0.95), respectively. The overall sensitivity and specificity of PF fibulin-3 for MPM were 0...
October 17, 2016: Oncotarget
Tommaso Michele Moles, Antonio Pompeiano, Thais Huarancca Reyes, Andrea Scartazza, Lorenzo Guglielminetti
Landraces represent an important part of the biodiversity well-adapted under limiting environmental conditions. We investigated the response of two Southern Italy tomato landraces, the well-known San Marzano (our commercial standard) and a local accession called "Ciettaicale", to different levels of sodium chloride in water irrigation (from 0 up to 600 mM) for a short-time exposure (one week). The combination of the chlorophyll a fluorescence and gas exchange analyses suggested that Ciettaicale maintained a higher efficiency of photosystem II (PSII) photochemistry and CO2 utilization at high salinity concentrations than San Marzano...
October 12, 2016: Plant Physiology and Biochemistry: PPB
Ernest U Ekpo, Claudia Mello-Thoms, Mary Rickard, Patrick C Brennan, Mark F McEntee
PURPOSE: To assess the agreement between digital breast tomosynthesis (DBT) breast density (BD) assessment made using Quantra™ and fifth edition BI-RADS(®). MATERIALS AND METHODS: This board approved study involved BD assessment of 234 women undergoing DBT investigation. BD estimation was performed from the raw DBT images using Quantra™ 3 (v.2.1.1, Hologic, Bedford MA). BI-RADS(®) assessment was performed using prior digital mammograms displayed simultaneously with 2D images synthesized from DBT by three radiologists using the fifth edition BI-RADS(®) (A, B, C, D)...
October 18, 2016: Breast: Official Journal of the European Society of Mastology
Angela L Perez, Monty Liong, Kevin Plotkin, Keith P Rickabaugh, Dennis J Paustenbach
This study provides an exposure and risk assessment of diundecyl phthalate (DUP), a high molecular weight phthalate plasticizer present in automobile interiors. Total daily intake of DUP was calculated from DUP measured in wipe samples from vehicle seats from six automobiles. Four of the vehicles exhibited atypical visible surface residue on the seats. Two vehicles with no visible surface residue were sampled as a comparison. DUP was the predominant organic compound identified in each of the wipes from all seats...
October 18, 2016: Chemosphere
Emilia Fisicaro, Carlotta Compari, Franco Bacciottini, Laura Contardi, Erika Pongiluppi, Nadia Barbero, Guido Viscardi, Pierluigi Quagliotto, Gaetano Donofrio, Marie Pierre Krafft
Biological and thermodynamic properties of a new homologous series of highly fluorinated bispyridinium cationic gemini surfactants, differing in the length of the spacer bridging the pyridinium polar heads in 1,1' position, are reported for the first time. Interestingly, gene delivery ability is closely associated with the spacer length due to a structural change of the molecule in solution. This conformation change is allowed when the spacer reaches the right length, and it is suggested by the trends of the apparent and partial molar enthalpies vs molality...
October 15, 2016: Journal of Colloid and Interface Science
Cremildo João Baptista, Ines Dourado, Sandra Brignol, Tarcísio de Matos Andrade, Francisco Inácio Bastos
BACKGROUND: The burden of sexually transmitted infections (STIs), such as syphilis, is higher in low-income countries, with serious consequences and profound impact on sexual and reproductive health and human immunodeficiency virus (HIV) spread. Syphilis prevalence tend to be higher among people who misuse drugs than in the general population. OBJECTIVE: To assess syphilis and associated factors among polydrug users (PDU) in the city of Salvador, Northeast Brazil...
October 18, 2016: International Journal on Drug Policy
Annika Clamor, Julian Koenig, Julian F Thayer, Tania M Lincoln
Arousal and the way it is coped with are relevant to the emergence of psychotic symptoms. Heart rate variability (HRV) stems from autonomic responses to environmental demands such as stress and is an index of physiological arousal, adaptability, and homeostatic reflexes forming autonomic balance. A randomized-controlled between-subjects trial that compared HRV-biofeedback (BF) to an active relaxation and to a waiting control condition was conducted in a sample with attenuated subclinical psychotic symptoms (N = 84)...
October 11, 2016: Behaviour Research and Therapy
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