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https://www.readbyqxmd.com/read/28231592/cxcr4-a-new-player-in-an-old-scene
#1
Andreas Knopf, Marie Kristin Fritsche, Yin Li
Transmembrane C-X-C chemokine receptor 4 (CXCR4) and its ligand C-X-C motif chemokine 12 (CXCL12) came into focus in many solid cancers, allowing a more fundamental diagnostic and therapeutic approach by modulating the immune response against cancer cells. CXCR4 and CXCL12 mediate cell proliferation, migration, and metastatic outgrowth in head and neck squamous cell carcinoma (HNSCC) and are strongly associated with cancer recurrence and patient survival. Despite recent advances in molecular imaging and cancer therapy in lymphoma using CXCL12 analogues, clinical trials evaluating the diagnostic and therapeutic impact on HNSCC are missing...
February 24, 2017: ORL; Journal for Oto-rhino-laryngology and its related Specialties
https://www.readbyqxmd.com/read/28229128/repetitive-head-impact-exposure-and-later-life-plasma-total-tau-in-former-national-football-league-players
#2
Michael L Alosco, Yorghos Tripodis, Johnny Jarnagin, Christine M Baugh, Brett Martin, Christine E Chaisson, Nate Estochen, Linan Song, Robert C Cantu, Andreas Jeromin, Robert A Stern
INTRODUCTION: Blood protein analysis of total tau (t-tau) may be a practical screening biomarker for chronic traumatic encephalopathy (CTE), a neurodegenerative tauopathy associated with repetitive head impact (RHI) exposure. We examined plasma t-tau in symptomatic former National Football League (NFL) players compared with controls and the relationship between RHI exposure and later-life plasma t-tau. METHODS: Ninety-six former NFL players (age 40-69) and 25 same-age controls underwent blood draw to determine plasma t-tau levels...
2017: Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring
https://www.readbyqxmd.com/read/28226912/development-of-a-head-impact-monitoring-intelligent-mouthguard
#3
Daniel S Hedin, Paul L Gibson, Adam J Bartsch, Sergey Samorezov, Daniel S Hedin, Paul L Gibson, Adam J Bartsch, Sergey Samorezov, Adam J Bartsch, Paul L Gibson, Sergey Samorezov, Daniel S Hedin
The authors present the development and laboratory system-level testing of an impact monitoring "Intelligent Mouthguard" intended to help with identification of potentially concussive head impacts and cumulative head impact dosage. The goal of Intelligent Mouthguard is to provide an indicator of potential concussion risk, and help caregiver identify athletes needing sideline concussion protocol testing. Intelligent Mouthguard may also help identify individuals who are at higher risk based on historical dosage...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226560/biomechanical-analysis-of-a-fall-velocities-at-impact
#4
Norbert Noury, Julien Poujaud, Pierre Cousin, Nicolas Poujaud, Norbert Noury, Julien Poujaud, Pierre Cousin, Nicolas Poujaud, Nicolas Poujaud, Norbert Noury, Julien Poujaud, Pierre Cousin
There are numerous research works focusing on falls of the elderly, proposing various technologies for its detection; however, few research works attempted to describe the mechanical phenomenon itself. In this study, we analyzed the kine(ma)tics of human falls with a simplified biomechanical model of human segments. We present some results based on data found in the literature and in our own laboratory experiments, to conclude that fall velocities at impact can reach values from 3.78 m.s(-1) (center of mass) to 6...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225689/sex-differences-in-anthropometrics-and-heading-kinematics-among-division-i-soccer-athletes
#5
Abigail C Bretzin, Jamie L Mansell, Ryan T Tierney, Jane K McDevitt
BACKGROUND: Soccer players head the ball repetitively throughout their careers; this is also a potential mechanism for a concussion. Although not all soccer headers result in a concussion, these subconcussive impacts may impart acceleration, deceleration, and rotational forces on the brain, leaving structural and functional deficits. Stronger neck musculature may reduce head-neck segment kinematics. HYPOTHESIS: The relationship between anthropometrics and soccer heading kinematics will not differ between sexes...
March 2017: Sports Health
https://www.readbyqxmd.com/read/28223249/predicted-unfavorable-neurological-outcome-is-overestimated-by-the-marshall-ct-score-crash-and-impact-models-in-severe-tbi-patients-management-with-early-decompressive-craniectomy
#6
Jose D Charry, Jorman H Tejada, Miguel A Pinzon, Wilson A Tejada, Juan D Ochoa, Manuel Falla, Jesus H Tovar, Ana M Cuellar-Bahamón, Juan P Solano
INTRODUCTION: Traumatic Brain Injury (TBI) is of public health interest and produces significant mortality and disability in Colombia. Calculators and prognostic models have been developed in order to establish neurologic outcome. We tested prognostic models (the Marshall CT score, IMPACT, and CRASH) for 14-day mortality, 6-month mortality, and 6-month outcome in TBI patients in a university Hospital in Colombia. METHODS: A 127 patients' cohort with TBI was treated in a regional trauma center in Colombia over 2 years and Bivariate and Multivariate analyses were used...
February 18, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28223034/children-s-head-motion-during-fmri-tasks-is-heritable-and-stable-over-time
#7
Laura E Engelhardt, Mary Abbe Roe, Jenifer Juranek, Dana DeMaster, K Paige Harden, Elliot M Tucker-Drob, Jessica A Church
Head motion during fMRI scans negatively impacts data quality, and as post-acquisition techniques for addressing motion become increasingly stringent, data retention decreases. Studies conducted with adult participants suggest that movement acts as a relatively stable, heritable phenotype that serves as a marker for other genetically influenced phenotypes. Whether these patterns extend downward to childhood has critical implications for the interpretation and generalizability of fMRI data acquired from children...
February 1, 2017: Developmental Cognitive Neuroscience
https://www.readbyqxmd.com/read/28222156/toothbrush-abrasivity-in-a-long-term-simulation-on-human-dentin-depends-on-brushing-mode-and-bristle-arrangement
#8
Mozhgan Bizhang, Ilka Schmidt, Yong-Hee Patricia Chun, Wolfgang H Arnold, Stefan Zimmer
OBJECTIVE: The aim of this study was to evaluate the susceptibility of dentin to brushing abrasion using four different toothbrushes (rotating-oscillating, sonic and two types of manual toothbrushes) with the same brushing forces. METHODS: Dentin samples (n = 72) were selected from 72 impacted third molars. Half of the surface of dentin samples was covered with an adhesive tape, creating a protected and a freely exposed area in the same specimen. Brushing was performed with either a: sonic (Sonicare PowerUp, Philips GmbH, Hamburg, Germany), b: oscillating-rotating (Oral B Vitality Precisions Clean, Procter & Gamble, Schwalbach am Taunus, Germany) or two different manual toothbrushes c: flat trim brush head toothbrush (Dr...
2017: PloS One
https://www.readbyqxmd.com/read/28221832/what-explains-patterns-of-diversification-and-richness-among-animal-phyla
#9
Tereza Jezkova, John J Wiens
Animal phyla vary dramatically in species richness (from one species to >1.2 million), but the causes of this variation remain largely unknown. Animals have also evolved striking variation in morphology and ecology, including sessile marine taxa lacking heads, eyes, limbs, and complex organs (e.g., sponges), parasitic worms (e.g., nematodes, platyhelminths), and taxa with eyes, skeletons, limbs, and complex organs that dominate terrestrial ecosystems (arthropods, chordates). Relating this remarkable variation in traits to the diversification and richness of animal phyla is a fundamental yet unresolved problem in biology...
March 2017: American Naturalist
https://www.readbyqxmd.com/read/28220985/the-head-and-neck-cancer-patient-concern-inventory-%C3%A2-patient-concerns-prevalence-dental-concerns-impact-and-relationships-of-concerns-with-quality-of-life-measures
#10
Maria L Aguilar, Pamela Sandow, John W Werning, Lia Brenneman, Walter J Psoter
PURPOSE: The Patient Concern Inventory(©) (PCI) is a clinical tool of self-reported patient concerns to be used by the clinician to structure the patient-oncologist visit. It was developed in the United Kingdom to address the issues of quality of life (QOL) in head and neck cancer (HNC) patients. The purpose of the study reported here was to determine the prevalence of PCI(©) items, the associations between PCI(©) items and QOL, and to explore the importance of oral/dental issues in the patient's well-being...
February 21, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28218215/correlation-between-condylar-fracture-pattern-after-parasymphyseal-impact-and-condyle-morphological-features-a-retrospective-analysis-of-107-chinese-patients
#11
Lu Han, Ting Long, Wei Tang, Lei Liu, Wei Jing, Wei-Dong Tian, Jie Long
BACKGROUND: The treatment of the condylar fractures is difficult. Factors that result in the fractures are complex. The objective of this morphometric study was to investigate the relationship between condylar fracture patterns and condylar morphological characteristics. METHODS: We conducted a retrospective analysis of 107 patients admitted to the West China Hospital of Stomatology for bilateral condylar fractures caused by parasymphyseal impact. The patients were divided into five groups according to the type of condylar fracture...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28217433/visual-analogue-scales-vas-measuring-instruments-for-the-documentation-of-symptoms-and-therapy-monitoring-in-cases-of-allergic-rhinitis-in-everyday-health-care-position-paper-of-the-german-society-of-allergology-aeda-and-the-german-society-of-allergy-and-clinical
#12
Ludger Klimek, Karl-Christian Bergmann, Tilo Biedermann, Jean Bousquet, Peter Hellings, Kirsten Jung, Hans Merk, Heidi Olze, Wolfgang Schlenter, Philippe Stock, Johannes Ring, Martin Wagenmann, Wolfgang Wehrmann, Ralph Mösges, Oliver Pfaar
BACKROUND: Visual analogue scales (VAS) are psychometric measuring instruments designed to document the characteristics of disease-related symptom severity in individual patients and use this to achieve a rapid (statistically measurable and reproducible) classification of symptom severity and disease control. VAS can also be used in routine patient history taking and to monitor the course of a chronic disease such as allergic rhinitis (AR). More specifically, the VAS has been used to assess effectiveness of AR therapy in real life, both in intermittent and persistent disease...
2017: Allergo Journal International
https://www.readbyqxmd.com/read/28216431/optimizing-fmri-preprocessing-pipelines-for-block-design-tasks-as-a-function-of-age
#13
Nathan W Churchill, Pradeep Raamana, Robyn Spring, Stephen C Strother
Functional Magnetic Resonance Imaging (fMRI) is a powerful neuroimaging tool, which is often hampered by significant noise confounds. There is evidence that our ability to detect activations in task fMRI is highly dependent on the preprocessing steps used to control noise and artifact. However, the vast majority of studies examining preprocessing pipelines in fMRI have focused on young adults. Given the widespread use of fMRI for characterizing the neurobiology of aging, it is critical to examine how the impact of preprocessing choices varies as a function of age...
February 12, 2017: NeuroImage
https://www.readbyqxmd.com/read/28216421/the-impacts-of-cord-blood-cotinine-and-glutathione-s-transferase-gene-polymorphisms-on-birth-outcome
#14
Kuan-Han Huang, An-Kuo Chou, Suh-Fang Jeng, Sharon Ng, Chia-Jung Hsieh, Mei-Huei Chen, Pau-Chung Chen, Wu-Shiun Hsieh
BACKGROUND: This study aimed to investigate the association between cord blood cotinine levels and birth outcome, and to determine whether fetal metabolic gene polymorphisms of glutathione-S-transferase (GST) modulate the effect of environmental tobacco smoke exposure during pregnancy. METHODS: This study included 328 maternal and neonatal pairs. Maternal and cord blood cotinine levels were measured using high performance liquid chromatography. The GST T1 (GSTT1) and GST M1 (GSTM1) polymorphisms were examined using the polymerase chain reaction method...
January 17, 2017: Pediatrics and Neonatology
https://www.readbyqxmd.com/read/28216066/the-potential-effect-of-oral-microbiota-in-the-prediction-of-mucositis-during-radiotherapy-for-nasopharyngeal-carcinoma
#15
Xiao-Xia Zhu, Xiao-Jun Yang, Yi-Lan Chao, Hui-Min Zheng, Hua-Fang Sheng, Hai-Yue Liu, Yan He, Hong-Wei Zhou
BACKGROUND: Oral mucositis is probably the most debilitating complication that can arise in treating a patient with head and neck cancer. Little is known about the impacts of oral microbiota on the initiation and progression of mucositis. METHODS: Based on 16S rRNA gene sequencing, dynamic changes in oral bacterial profile as well as correlations between the severity of mucositis and bacterial shifts during radiotherapy were investigated. FINDINGS: Our results revealed that bacterial community structure altered progressively during radiation therapy, in parallel with a marked increase in the relative abundance of some Gram-negative bacteria...
February 7, 2017: EBioMedicine
https://www.readbyqxmd.com/read/28214728/lipid-signalling-mediated-by-pld-pa-modulates-proline-and-h2o2-levels-in-barley-seedlings-exposed-to-short-and-long-term-chilling-stress
#16
Micaela Peppino Margutti, Matias Reyna, María Verónica Meringer, Graciela E Racagni, Ana Laura Villasuso
Phospholipase D (PLD) hydrolyses phospholipids to yield phosphatidic acid (PA) and a head group, and is involved in responses to a variety of environmental stresses, including chilling and freezing stress. Barley responses to chilling stress (induced by incubating seedlings at 4 °C) are dynamic and the duration of stress, either short (0-180 min) or long-term (24-36 h) had a significant impact on the response. We investigated the roles of PLD/PA in responses of barley (Hordeum vulgare) seedlings to short and long-term chilling stress, based on regulation of proline and reactive oxygen species (ROS) levels...
February 10, 2017: Plant Physiology and Biochemistry: PPB
https://www.readbyqxmd.com/read/28214540/cognitive-performance-of-male-and-female-c57bl-6j-mice-after-repetitive-concussive-brain-injuries
#17
Alexander G Velosky, Laura B Tucker, Amanda H Fu, Jiong Liu, Joseph T McCabe
In contact sports, repetitive concussive brain injury (rCBI) is the prevalent form of head injury seen in athletes. The need for effective treatment is urgent as rCBI has been associated with a host of cognitive, behavioral and neurological complaints. There has been a growing trend in the use of female animals in pre-clinical research, but few studies have investigated possible sex differences following rCBI. The goal of the current study was to determine any differences between male and female C57BL/6J mice on assessments of learning and memory after repetitive concussive injury...
February 15, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28212927/patients-with-chronic-dizziness-following-traumatic-head-injury-typically-have-multiple-diagnoses-involving-combined-peripheral-and-central-vestibular-dysfunction
#18
Q Arshad, R E Roberts, H Ahmad, R Lobo, M Patel, T Ham, D J Sharp, B M Seemungal
OBJECTIVE: We hypothesised that chronic vestibular symptoms (CVS) of imbalance and dizziness post-traumatic head injury (THI) may relate to: (i) the occurrence of multiple simultaneous vestibular diagnoses including both peripheral and central vestibular dysfunction in individual patients increasing the chance of missed diagnoses and suboptimal treatment; (ii) an impaired response to vestibular rehabilitation since the central mechanisms that mediate rehabilitation related brain plasticity may themselves be disrupted...
February 7, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28212664/the-impact-of-high-total-cholesterol-and-high-low-density-lipoprotein-on-avascular-necrosis-of-the-femoral-head-in-low-energy-femoral-neck-fractures
#19
Xianshang Zeng, Ke Zhan, Lili Zhang, Dan Zeng, Weiguang Yu, Xinchao Zhang, Mingdong Zhao, Zhicheng Lai, Runzhen Chen
BACKGROUND: Avascular necrosis of the femoral head (AVNFH) typically constitutes 5 to 15% of all complications of low-energy femoral neck fractures, and due to an increasingly ageing population and a rising prevalence of femoral neck fractures, the number of patients who develop AVNFH is increasing. However, there is no consensus regarding the relationship between blood lipid abnormalities and postoperative AVNFH. The purpose of this retrospective study was to investigate the relationship between blood lipid abnormalities and AVNFH following the femoral neck fracture operation among an elderly population...
February 17, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28209280/community-level-inequalities-in-concussion-education-of-youth-football-coaches
#20
Emily Kroshus, Zachary Y Kerr, Joseph G L Lee
INTRODUCTION: USA Football has made the Heads Up Football (HUF) concussion education program available for coaches of youth football players. Existing evidence about the effectiveness of the HUF coach education program is equivocal. For HUF and other programs, there is growing concern that even effective interventions can increase inequalities if there is different uptake or impact by SES or other demographic factors. Understanding how adoption is patterned along these lines is important for understanding equity issues in youth football...
February 10, 2017: American Journal of Preventive Medicine
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