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Stephen May

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https://www.readbyqxmd.com/read/28646381/stenotic-intercondylar-notch-type-is-correlated-with-anterior-cruciate-ligament-injury-in-female-patients-using-magnetic-resonance-imaging
#1
Theodoros Bouras, Peter Fennema, Stephen Burke, Hilary Bosman
PURPOSE AND HYPOTHESIS: The principal purpose of this paper was to identify whether femoral notch morphology was different in females without anterior cruciate ligament (ACL) injury from those with ACL injury. Magnetic resonance imaging (MRI) was used to assess the femoral notch type, notch width index and 'α angle' in female patients and measure these differences. METHODS: This is a retrospective case control study of 119 female patients, 58 with ACL injury and 61 patients without ACL injury who underwent knee MRI between March 2014 and April 2016...
June 23, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28646360/does-the-risk-of-rerevision-vary-between-porous-tantalum-cups-and-other-cementless-designs-after-revision-hip-arthroplasty
#2
Inari Laaksonen, Michelle Lorimer, Kirill Gromov, Ola Rolfson, Keijo T Mäkelä, Stephen E Graves, Henrik Malchau, Maziar Mohaddes
BACKGROUND: Earlier results with porous tantalum acetabular cups in revision THA generally have been favorable. Recently there has been some evidence presented that porous tantalum cups might decrease the risk of rerevision in the setting of revision hip surgery performed owing to prosthetic joint infection (PJI). As the data supporting this assertion come from a study with a limited study population, examining this issue with a large registry approach may be enlightening. QUESTIONS/PURPOSES: By combining results from two large, national registries, we asked: (1) Do porous tantalum cups show improved survival after revision THA compared with other cementless designs? (2) Does the use of porous tantalum cups influence survivorship when rerevision for PJI is the endpoint? METHODS: A total of 2442 first-time THA revisions with porous tantalum cups and 4401 first-time revisions with other uncemented cups were included in this collaborative study between the Australian and Swedish national joint registries...
June 23, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28645905/obesity-related-hypogonadism-a-reversible-condition
#3
Stamatios Zouras, Jeffrey W Stephens, David Price
Obesity is associated with hypogonadism. While this association is widely accepted, the underlying mechanisms remain unclear. Furthermore, obesity is a risk factor for hypogonadism and conversely hypogonadism may be a risk factor for obesity. We present the case of a morbidly obese man aged 30 years with hypogonadotrophic hypogonadism that underwent a Roux-en-Y gastric bypass operation. Following the surgical treatment of his obesity, the testosterone level returned to normal with improvements in hypogonadal symptoms, which allowed discontinuation of exogenous testosterone therapy...
June 23, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28645891/health-app-use-among-individuals-with-symptoms-of-depression-and-anxiety-a-survey-study-with-thematic-coding
#4
Caryn Kseniya Rubanovich, David C Mohr, Stephen M Schueller
BACKGROUND: Researchers have largely turned to commercial app stores, randomized trials, and systematic reviews to make sense of the mHealth landscape. Few studies have approached understanding by collecting information from target end users. The end user perspective is critical as end user interest in and use of mHealth technologies will ultimately drive the efficacy of these tools. OBJECTIVE: The purpose of this study was to obtain information from end users of mHealth technologies to better understand the physical and mental health apps people use and for what purposes...
June 23, 2017: JMIR Mental Health
https://www.readbyqxmd.com/read/28645178/ecological-imperatives-for-aquatic-carbon-dioxide-concentrating-mechanisms
#5
Stephen C Maberly, Brigitte Gontero
In aquatic environments, the concentration of inorganic carbon is spatially and temporally variable and CO2 can be substantially oversaturated or depleted. Depletion of CO2 plus low rates of diffusion cause inorganic carbon to be more limiting in aquatic than terrestrial environments, and the frequency of species with a CO2-concentrating mechanism (CCM), and their contribution to productivity, is correspondingly greater. Aquatic photoautotrophs may have biochemical or biophysical CCMs and exploit CO2 from the sediment or the atmosphere...
June 22, 2017: Journal of Experimental Botany
https://www.readbyqxmd.com/read/28645080/relationships-between-patients-attachment-characteristics-and-views-and-use-of-psychiatric-treatment
#6
G Camelia Adams, Lachlan A McWilliams, Andrew J Wrath, Stephen Adams, Dawn De Souza
This study explored the influence of attachment on psychiatric treatment by considering attitudes towards and the use of psychotropic medication and psychotherapy in patients with depressive and anxiety disorders. Adults referred to a psychiatrist completed self-report measures and participated in a diagnostic interview based on DSM-IV criteria. Those with depressive, anxiety or adjustment disorders were included (n = 124). Patients reported the types and dosage of current psychotropic medication as well as number of different psychiatrists and psychologists/counselors they had seen in the past 10 years...
June 15, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28644537/psychosocial-demographic-and-illness-related-factors-associated-with-acute-traumatic-stress-responses-in-parents-of-children-with-a-serious-illness-or-injury
#7
Frank Muscara, Maria C McCarthy, Emma J Thompson, Claire-Marie Heaney, Stephen J C Hearps, Meredith Rayner, Kylie Burke, Jan M Nicholson, Vicki A Anderson
This study investigated factors associated with acute stress symptoms in parents of seriously ill children across a range of illnesses and treatment settings within a pediatric hospital setting. It was hypothesized that psychosocial variables would be more strongly associated with acute stress responses than demographic and child illness variables. Participants were 115 mothers and 56 fathers of children treated within the oncology, cardiology, and intensive care departments of a pediatric hospital. Acute stress, psychosocial, demographic, and medical data were collected within the first 4 weeks of the child's hospital admission...
June 2017: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/28644138/comparative-analysis-of-primary-versus-relapse-refractory-dlbcl-identifies-shifts-in-mutation-spectrum
#8
Danielle M Greenawalt, Winnie S Liang, Sakina Saif, Justin Johnson, Petar Todorov, Austin Dulak, Daniel Enriquez, Rebecca Halperin, Ambar Ahmed, Vladislav Saveliev, John Carpten, David Craig, J Carl Barrett, Brian Dougherty, Michael Zinda, Stephen Fawell, Jonathan R Dry, Kate Byth
Current understanding of the mutation spectrum of relapsed/refractory (RR) tumors is limited. We performed whole exome sequencing (WES) on 47 diffuse large B cell lymphoma (DLBCL) tumors that persisted after R-CHOP treatment, 8 matched to primary biopsies. We compared genomic alterations from the RR cohort against two treatment-naïve DLBCL cohorts (n=112). While the overall number and types of mutations did not differ significantly, we identified frequency changes in DLBCL driver genes. The overall frequency of MYD88 mutant samples increased (12% to 19%), but we noted a decrease in p...
June 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28644124/scapulothoracic-joint-dysfunction
#9
Joseph Ugorji, Stephen J Pomeranz
Scapulothoracic derangements are often overlooked and hidden within the clinical fog created by complex back, shoulder, and rib symptoms. This study reviewed 200 magnetic resonance imaging and computed tomography studies dedicated for scapular imaging between January 2010 and May 2016. This article discusses scapulothoracic pathologies and imaging findings.
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28644012/sigma-2-receptor-tmem97-agonists-produce-long-lasting-anti-neuropathic-pain-effects-in-mice
#10
James J Sahn, Galo L Mejia, Pradipta R Ray, Stephen F Martin, Theodore John Price
Neuropathic pain is an important medical problem with few effective treatments. The sigma 1 receptor (σ1R) is a potential target for neuropathic pain therapeutics, and antagonists for this receptor are effective in preclinical models and are currently in phase II clinical trials. Relatively little is known about the σ2R, which has recently been identified as transmembrane protein 97 (Tmem97). We generated a series of σ1R and σ2R/Tmem97 agonists and antagonists and tested them for efficacy in the mouse spared nerve injury (SNI) model...
June 23, 2017: ACS Chemical Neuroscience
https://www.readbyqxmd.com/read/28643290/does-the-eating-disorder-examination-questionnaire-global-subscale-adequately-predict-eating-disorder-psychopathology-in-the-daily-life-of-obese-adults
#11
Tyler B Mason, Kathryn E Smith, Ross D Crosby, Stephen A Wonderlich, Scott J Crow, Scott G Engel, Carol B Peterson
The eating disorder examination questionnaire (EDE-Q) Global score is a self-report measure of global eating disorder (ED) psychopathology. This study used ecological momentary assessment (EMA) to evaluate the ecological validity of EDE-Q Global scores among obese adults. Fifty obese adults completed the EDE-Q and 2 weeks of EMA ratings prior to initiating eating episodes and subsequently after eating episodes. EMA items assessed behavioral symptoms [i.e., loss of control (LOC) eating and overeating] and cognitive symptoms (i...
June 22, 2017: Eating and Weight Disorders: EWD
https://www.readbyqxmd.com/read/28642803/transcriptomic-profiles-of-aging-in-na%C3%A3-ve-and-memory-cd4-cells-from-mice
#12
Jackson Taylor, Lindsay Reynolds, Li Hou, Kurt Lohman, Wei Cui, Stephen Kritchevsky, Charles McCall, Yongmei Liu
BACKGROUND: CD4+ T cells can be broadly divided into naïve and memory subsets, each of which are differentially impaired by the aging process. It is unclear if and how these differences are reflected at the transcriptomic level. We performed microarray profiling on RNA derived from naïve (CD44(low)) and memory (CD44(high)) CD4+ T cells derived from young (2-3 month) and old (28 month) mice, in order to better understand the mechanisms of age-related functional alterations in both subsets...
2017: Immunity & Ageing: I & A
https://www.readbyqxmd.com/read/28641969/determining-3d-kinematics-of-the-hip-using-video-fluoroscopy-guidelines-for-balancing-radiation-dose-and-registration-accuracy
#13
Fabio D'Isidoro, Patrik Eschle, Thomas Zumbrunn, Christian Sommer, Stephan Scheidegger, Stephen J Ferguson
BACKGROUND: Video fluoroscopy is a technique currently used to retrieve the in vivo three-dimensional kinematics of human joints during activities of daily living. Minimization of the radiation dose absorbed by the subject during the measurement is a priority and has not been thoroughly addressed so far. This issue is critical for the motion analysis of the hip joint, because of the proximity of the gonads. The aims of this study were to determine the x-ray voltage and the irradiation angle that minimize the effective dose and to achieve the best compromise between delivered dose and accuracy in motion retrieval...
May 25, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28641703/a-randomised-controlled-trial-to-assess-the-cost-effectiveness-of-intensive-versus-no-scheduled-follow-up-in-patients-who-have-undergone-resection-for-colorectal-cancer-with-curative-intent
#14
David Mant, Alastair Gray, Siân Pugh, Helen Campbell, Stephen George, Alice Fuller, Bethany Shinkins, Andrea Corkhill, Jane Mellor, Elizabeth Dixon, Louisa Little, Rafael Perera-Salazar, John Primrose
BACKGROUND: Intensive follow-up after surgery for colorectal cancer is common practice but lacks a firm evidence base. OBJECTIVE: To assess whether or not augmenting symptomatic follow-up in primary care with two intensive methods of follow-up [monitoring of blood carcinoembryonic antigen (CEA) levels and scheduled imaging] is effective and cost-effective in detecting the recurrence of colorectal cancer treatable surgically with curative intent. DESIGN: Randomised controlled open-label trial...
May 2017: Health Technology Assessment: HTA
https://www.readbyqxmd.com/read/28641368/glomerular-hyperfiltration-in-obese-african-american-hypertensive-patients-is-associated-with-elevated-urinary-mitochondrial-dna-copy-number
#15
Alfonso Eirin, Ahmed Saad, John R Woollard, Luis A Juncos, David A Calhoun, Hui Tang, Amir Lerman, Stephen C Textor, Lilach O Lerman
BACKGROUND: Glomerular hyperfiltration may contribute to the high incidence of renal disease in Obese African Americans essential hypertensive (ObAAEH) patients, but the precise mechanisms responsible for renal injury have not been elucidated. Mitochondria are important determinants of renal injury in hypertension, and increased levels of mitochondrial DNA (mtDNA) in the urine may indicate renal mitochondrial injury. We hypothesized that urine mtDNA copy numbers would be higher in ObAAEH compared to Caucasian essential hypertensive (CEH) patients...
June 14, 2017: American Journal of Hypertension
https://www.readbyqxmd.com/read/28641361/maternal-alcohol-use-disorder-and-risk-of-child-contact-with-the-justice-system-in-western-australia-a-population-cohort-record-linkage-study
#16
Katherine Hafekost, David Lawrence, Colleen O'Leary, Carol Bower, James Semmens, Stephen R Zubrick
BACKGROUND: Early contact with the justice system is associated with a multitude of negative outcomes across the life course. This includes an increased risk of ongoing justice contact, social disadvantage and marginalization, and mental health and substance use issues. Children whose mothers have an alcohol use disorder may be at risk of early justice system contact, and we sought to quantify this relationship in a Western Australian cohort. METHODS: This population cohort study made use of linked administrative data...
June 22, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28641153/lipoprotein-a-and-coronary-atheroma-progression-rates-during-long-term-high-intensity-statin-therapy-insights-from-saturn
#17
Rishi Puri, Christie M Ballantyne, Ron C Hoogeveen, Mingyuan Shao, Philip Barter, Peter Libby, M John Chapman, Raimund Erbel, Benoit J Arsenault, Joel S Raichlen, Steven E Nissen, Stephen J Nicholls
BACKGROUND & AIMS: Lipoprotein(a) [Lp(a)] is a low-density lipoprotein (LDL)-like particle that associates with major adverse cardiovascular events (MACE). We examined relationships between Lp(a) measurements and changes in coronary atheroma volume following long-term maximally-intensive statin therapy in coronary artery disease patients. METHODS: Study of coronary atheroma by intravascular ultrasound: Effect of Rosuvastatin Versus Atorvastatin (SATURN) used serial intravascular ultrasound measures of coronary atheroma volume in patients treated with rosuvastatin 40 mg or atorvastatin 80 mg for 24 months...
June 15, 2017: Atherosclerosis
https://www.readbyqxmd.com/read/28640990/opiate-antagonists-do-not-interfere-with-the-clinical-benefits-of-stimulants-in-adhd-a-double-blind-placebo-controlled-trial-of-the-mixed-opioid-receptor-antagonist-naltrexone
#18
Thomas J Spencer, Pradeep Bhide, Jinmin Zhu, Stephen V Faraone, Maura Fitzgerald, Amy M Yule, Mai Uchida, Andrea E Spencer, Anna M Hall, Ariana J Koster, Joseph Biederman
OBJECTIVE: Methylphenidate activates μ-opioid receptors, which are linked to euphoria. μ-Opioid antagonists, such as naltrexone, may attenuate the euphoric effects of stimulants, thereby minimizing their abuse potential. This study assessed whether the combination of naltrexone with methylphenidate is well-tolerated while preserving the clinical benefits of stimulants in subjects with attention-deficit/hyperactivity disorder (ADHD). METHODS: We conducted a 6-week, double-blind, placebo-controlled, randomized clinical trial of naltrexone in adults with DSM-IV ADHD receiving open treatment with a long-acting formulation of methylphenidate from January 2013 to July 2015...
June 20, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28640989/stimulant-treatment-trajectories-are-associated-with-neural-reward-processing-in-attention-deficit-hyperactivity-disorder
#19
Lizanne J S Schweren, Annabeth Groenman, Daniel von Rhein, Wouter Weeda, Stephen F Faraone, Marjolein Luman, Hanneke van Ewijk, Dirk J Heslenfeld, Barbara Franke, Jan K Buitelaar, Jaap Oosterlaan, Pieter J Hoekstra, Catharina A Hartman
OBJECTIVE: The past decades have seen a surge in stimulant prescriptions for the treatment of attention-deficit/hyperactivity disorder (ADHD). Stimulants acutely alleviate symptoms and cognitive deficits associated with ADHD by modulating striatal dopamine neurotransmission and induce therapeutic changes in brain activation patterns. Long-term functional changes after treatment are unknown, as long-term studies are scarce and have focused on brain structure. In this observational study (2009-2012), we investigated associations between lifetime stimulant treatment history and neural activity during reward processing...
June 20, 2017: Journal of Clinical Psychiatry
https://www.readbyqxmd.com/read/28640878/genetic-loci-associated-with-coronary-artery-disease-harbor-evidence-of-selection-and-antagonistic-pleiotropy
#20
Sean G Byars, Qin Qin Huang, Lesley-Ann Gray, Andrew Bakshi, Samuli Ripatti, Gad Abraham, Stephen C Stearns, Michael Inouye
Traditional genome-wide scans for positive selection have mainly uncovered selective sweeps associated with monogenic traits. While selection on quantitative traits is much more common, very few signals have been detected because of their polygenic nature. We searched for positive selection signals underlying coronary artery disease (CAD) in worldwide populations, using novel approaches to quantify relationships between polygenic selection signals and CAD genetic risk. We identified new candidate adaptive loci that appear to have been directly modified by disease pressures given their significant associations with CAD genetic risk...
June 2017: PLoS Genetics
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