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https://www.readbyqxmd.com/read/29136621/evaluation-of-nickel-release-from-endobronchial-valves-as-a-possible-cause-of-hypersensitivity-pneumonitis-in-a-patient-treated-with-bronchoscopic-lung-volume-reduction
#1
Daniel P Franzen, Claudia Lang, Nikos Agorastos, Lutz Freitag, Malcolm Kohler, Peter Schmid-Grendelmeier
BACKGROUND: Endobronchial valve (EBV) placement is an established lung volume reduction procedure aiming to improve lung function and exercise capacity in patients with severe emphysema. As EBVs consist of silicone and nitinol (a metal alloy of nickel and titanium), there are concerns that nickel ions might be released and could have a clinical impact in patients with a contact allergy to nickel. Based on a case with hypersensitivity pneumonitis (HP) after treatment with EBVs, we aimed to evaluate the in vitro nickel release from EBVs using inductively coupled plasma mass spectrometry (ICP-MS) and scanning electron microscopy (SEM)...
November 15, 2017: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29130047/bending-properties-of-fiber-reinforced-composites-retainers-bonded-with-spot-composite-coverage
#2
Maria Francesca Sfondrini, Paola Gandini, Paola Tessera, Pekka K Vallittu, Lippo Lassila, Andrea Scribante
Orthodontic and periodontal splints are prepared with round or flat metallic wires. As these devices cannot be used in patients with allergy to metals or with aesthetic demands, fiber-reinforced composite (FRC) retainers have been introduced. Stiffness of FRC materials could reduce physiologic tooth movement. In order to lower rigidity of conventional FRC retainers, a modified construction technique that provided a partial (spot) composite coverage of the fiber has been tested and compared with metallic splints and full-bonded FRCs...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29102362/drug-eluting-stents-in-elderly-patients-with-coronary-artery-disease-senior-a-randomised-single-blind-trial
#3
Olivier Varenne, Stéphane Cook, Georgios Sideris, Sasko Kedev, Thomas Cuisset, Didier Carrié, Thomas Hovasse, Philippe Garot, Rami El Mahmoud, Christian Spaulding, Gérard Helft, José F Diaz Fernandez, Salvatore Brugaletta, Eduardo Pinar-Bermudez, Josepa Mauri Ferre, Philippe Commeau, Emmanuel Teiger, Kris Bogaerts, Manel Sabate, Marie-Claude Morice, Peter R Sinnaeve
BACKGROUND: Elderly patients regularly receive bare-metal stents (BMS) instead of drug-eluting stents (DES) to shorten the duration of double antiplatelet therapy (DAPT). The aim of this study was to compare outcomes between these two types of stents with a short duration of DAPT in such patients. METHODS: In this randomised single-blind trial, we recruited patients from 44 centres in nine countries. Patients were eligible if they were aged 75 years or older; had stable angina, silent ischaemia, or an acute coronary syndrome; and had at least one coronary artery with a stenosis of at least 70% (≥50% for the left main stem) deemed eligible for percutaneous coronary intervention (PCI)...
October 31, 2017: Lancet
https://www.readbyqxmd.com/read/29025605/comparison-between-carbon-peek-volar-locking-plates-and-titanium-volar-locking-plates-in-the-treatment-of-distal-radius-fractures
#4
Dario Perugia, Matteo Guzzini, Daniele Mazza, Carlo Iorio, Carolina Civitenga, Andrea Ferretti
INTRODUCTION: Unstable intra articular fractures of distal radius are frequently being managed with open reduction and internal fixation. Volar locking plate based on polyetheretherketon (PEEK) polymer has developed lately as an alternative to conventional metallic devices. The advantage of this kind of plates include the lack of metal allergies, radiolucency, low artefacts on MRI or imaging scans and the high resistance associated to loading forces. The aim of this study was to evaluate the clinical and radiological results using a new Carbon-PEEK volar locking plate compared with titanium volar locking plates for the treatment of distal radius fractures...
October 2017: Injury
https://www.readbyqxmd.com/read/29023602/trace-metal-release-after-minimally-invasive-repair-of-pectus-excavatum
#5
Caroline Fortmann, Thomas Göen, Marcus Krüger, Benno M Ure, Claus Petersen, Joachim F Kübler
BACKGROUND: Several studies have shown a high incidence of metal allergy after minimally-invasive repair of pectus excavatum (MIRPE). We postulated that MIRPE is associated with a significant release of trace metal ions, possibly causing the allergic symptoms. METHODS: We evaluated the concentration with chromium, cobalt and nickel in blood, urine and tissue in patients prior to MIRPE and in patients who underwent an explantation of the stainless-steel bar(s) after three years...
2017: PloS One
https://www.readbyqxmd.com/read/28965571/ni-ii-interaction-with-a-peptide-model-of-the-human-tlr4-ectodomain
#6
Massimiliano Peana, Karolina Zdyb, Serenella Medici, Alessio Pelucelli, Giancarlo Simula, Elzbieta Gumienna-Kontecka, Maria Antonietta Zoroddu
Ni(II) stimulates innate immunity via the direct binding to human Toll Like Receptor 4 (hTLR4), the bacterial lypopolysaccharide receptor. The binding is specific for humans and causes nickel contact allergy. The protein sequence analysis of hTLR4 revealed that the ectodomain, the region supposed to coordinate the metal ions, contains a histidine-rich motif that is not conserved among all organisms. To elucidate the role of each histidine residue on the protein-nickel binding, we examined the formation of Ni(II) complexes with the model peptide NH2-FQHSNRKQMSERSVFRSRRNRIYRDISHTHTR-COO(-), which encompasses the sequence 429-460 of hTLR4...
December 2017: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/28913542/metal-release-profiles-of-orthodontic-bands-brackets-and-wires-an-in-vitro-study
#7
B Wendl, H Wiltsche, E Lankmayr, H Winsauer, A Walter, A Muchitsch, N Jakse, M Wendl, T Wendl
AIM: The present study evaluated the temporal release of Co Cr, Mn, and Ni from the components of a typical orthodontic appliance during simulated orthodontic treatment. MATERIALS AND METHODS: Several commercially available types of bands, brackets, and wires were exposed to an artificial saliva solution for at least 44 days and the metals released were quantified in regular intervals using inductively coupled plasma quadrupole mass spectrometry (ICP-MS, Elan DRC+, Perkin Elmer, USA)...
November 2017: Journal of Orofacial Orthopedics, Fortschritte der Kieferorthopädie
https://www.readbyqxmd.com/read/28886415/burden-of-higher-lead-exposure-in-african-americans-starts-in-utero-and-persists-into-childhood
#8
Andrea E Cassidy-Bushrow, Alexandra R Sitarik, Suzanne Havstad, Sung Kyun Park, Lawrence F Bielak, Christine Austin, Christine Cole Johnson, Manish Arora
BACKGROUND: Recent public health lead crises in urban areas emphasize the need to better understand exposure to environmental toxicants, particularly in higher risk groups. Although African-American children have the highest prevalence of elevated blood lead levels in the United States, little is known about when this trajectory of disproportionate burden of lead exposure first emerges. OBJECTIVES: Using tooth-matrix biomarkers that directly measure fetal and early childhood metal levels, the primary goal of this study was to determine if there were racial disparities in lead levels during fetal development and early childhood...
November 2017: Environment International
https://www.readbyqxmd.com/read/28875355/is-there-an-association-between-flow-diverter-fish-mouthing-and-delayed-type-hypersensitivity-to-metals-a-case-control-study
#9
Naci Kocer, Prabath Kumar Mondel, Elif Yamac, Ayse Kavak, Osman Kizilkilic, Civan Islak
PURPOSE: Flow diverters are increasingly used in the treatment of complex and giant intracranial aneurysms. However, they are associated with complications like late aneurysmal rupture. Additionally, flow diverters show focal structural decrease in luminal diameter without any intimal hyperplasia. This resembles a "fish mouth" when viewed en face. In this pilot study, we tested the hypothesis of a possible association between flow diverter fish-mouthing and delayed-type hypersensitivity to its metal constituents...
November 2017: Neuroradiology
https://www.readbyqxmd.com/read/28870053/-domestic-external-fixator-application-in-the-treatment-of-limb-deformities-7-289-cases-application-report
#10
S H Qin, B F Guo, X J Zheng, S F Jiao, H T Xia, A M Peng, Q Pan, J C Zang, Z J Wang
Objective: To discuss the clinical application and effects of domestic external fixator in the treatment of patients with malformations of limbs. Methods: A total of 7 289 patients with malformation of limbs who had been operated in Qin Sihe orthopedic surgery team from January 1989 to June 2016 were retrospective analyzed. The patients were treated with domestic external fixator, including 4 033 males and 3 256 females, aging from 2 to 82 years with a mean age of 23.4 years. There were 2 732 patients using Ilizarov external fixator, 4 713 patients using hybrid external fixator, 57 patients using monobrachial external fixator, 232 patients using Ilizarov external fixator and hybrid external fixator...
September 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28841289/nanoscale-zeolitic-imidazolate-framework-8-as-efficient-vehicles-for-enhanced-delivery-of-cpg-oligodeoxynucleotides
#11
Huijie Zhang, Wei Chen, Kai Gong, Jinghua Chen
CpG oligodeoxynucleotides (ODNs) activate the immune system and induce Th 1 responses by stimulation of Toll-like receptor 9 (TLR9). Thus, CpG ODNs have become immunotherapeutics against various diseases including cancers, allergies, and infection. However, applications of CpG ODNs are largely limited because of their easy degradation by DNase as well as inefficient cellular uptake. Development of efficient delivery systems capable of transferring CpG ODNs into immune cells is important to enhance their therapeutic efficacy...
September 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28812014/surgical-approach-may-influence-survival-of-large-diameter-head-metal-on-metal-total-hip-arthroplasty-a-6-to-10-year-follow-up-study
#12
Chih-Chien Hu, Tsan-Wen Huang, Shih-Jie Lin, Po-Chun Lin, Feng-Chih Kuo, Kuo-Ti Peng, Kuo-Chin Huang, Hsin-Nung Shih, Mel S Lee
Large-diameter head (LDH) metal-on-metal (MoM) total hip arthroplasty (THA) has lost popularity because of metal allergy or ALTRs (adverse local tissue reactions) in the past decade. Whether the surgical approach may influence the survival of LDH-MoM-THA has not been reported. From 2006 to 2009, we performed 96 LDH-MoM-THAs on 80 patients using an in situ head-neck assembly technique through a modified Watson-Jones approach. With a mean follow-up of 8.4 years (range, 6.3-10.1 years), the implant survival rate was 100%...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28806494/body-piercing-motivations-and-implications-for-health
#13
REVIEW
Cheri Van Hoover, Carol-Ann Rademayer, Cindy L Farley
Body piercing has evolved from a behavior once considered extreme to an accepted choice among the general population. Earlobe piercing is so common that it is now considered a normative behavior. The motivations for choosing body piercing have changed and are associated with piercing site and number of piercings chosen by the individual. Meanings ascribed to body piercing were traditionally related to enhanced sexual desirability and experience, but now range from the innocuous, such as a fashion statement, to the risk laden, such as nonsuicidal self-injury...
August 14, 2017: Journal of Midwifery & Women's Health
https://www.readbyqxmd.com/read/28804748/health-of-children-living-near-coal-ash
#14
Clara G Sears, Kristina M Zierold
Coal ash, generated from coal combustion, is composed of small particles containing metals and other elements, such as metalloids. Coal ash is stored in open-air impoundments, frequently near communities. The objective of this study was to evaluate the prevalence of health and sleep problems in children living near coal ash and compare these prevalences to children not living near coal ash. In 2013 to 2014, we conducted a cross-sectional survey in a community adjacent to coal ash storage sites and a community not exposed to coal ash...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28795428/are-metals-involved-in-tattoo-related-hypersensitivity-reactions-a-case-report
#15
Christa de Cuyper, Evelyne Lodewick, Ines Schreiver, Bernhard Hesse, Christian Seim, Hiram Castillo-Michel, Peter Laux, Andreas Luch
BACKGROUND: Allergic reactions to tattoos are not uncommon. However, identification of the culprit allergen(s) remains challenging. OBJECTIVES: We present a patient with papulo-nodular infiltration of 20-year-old tattoos associated with systemic symptoms that disappeared within a week after surgical removal of metal osteosynthesis implants from his spine. We aimed to explore the causal relationship between the metal implants and the patient's clinical presentation...
August 9, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28776630/metal-allergy-as-a-cause-of-implant-failure-in-shoulder-arthroplasty
#16
Jia-Wei Kevin Ko, Thema A Nicholson, C Edward Hoffler, Gerald Williams, Charles Getz
Metal allergy is an uncommon and poorly understood cause of failure of orthopedic implants. To the authors' knowledge, there have been no reports of the management of shoulder arthroplasty patients with metal allergy. The authors present their experience with the diagnosis and management of patients with metal allergy. Patients with metal allergy undergoing shoulder arthroplasty were identified through retrospective chart review from January 1, 2012, to January 31, 2015. Case characteristics collected included patient risk factors (age, sex, prior cutaneous reactions to metal), metal allergy factors (type of metal allergy, method of diagnosis), and surgery factors (implant type, primary/revision, type of shoulder arthroplasty)...
September 1, 2017: Orthopedics
https://www.readbyqxmd.com/read/28709788/making-sense-of-metal-allergy-and-hypersensitivity-to-metallic-implants-in-relation-to-hand-surgery
#17
REVIEW
Thomas J Christensen, Shefali A Samant, Alexander Y Shin
All metals implanted into a biological system undergo some degree of corrosion depending upon its composition. The electrochemical process of corrosion produces free metal ions, which may activate the host's immune system through a variety of mechanisms. Whereas dermal metal hypersensitivity is common, affecting 10% to 15% of the population, the immune reaction from implanted metals is much less common (< 0.1%), but has been associated with metal allergy and hypersensitivity producing a multitude of patient symptoms...
September 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28675503/a-population-based-study-of-self-reported-skin-exposures-and-symptoms-in-relation-to-contact-allergy-in-adolescents
#18
Maria Lagrelius, Carl-Fredrik Wahlgren, Mihály Matura, Anna Bergström, Inger Kull, Carola Lidén
BACKGROUND: Knowledge about the relations between skin exposures, skin symptoms and contact allergy in adolescents is limited. OBJECTIVES: To explore self-reported skin exposures and skin symptoms in girls and boys, and to assess the associations between exposures, symptoms and contact allergy at age 16 years. PARTICIPANTS AND METHODS: In all, 3115 adolescents from the population-based BAMSE birth cohort answered a questionnaire at age 16 concerning various skin exposures and related skin symptoms...
July 4, 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28675438/biological-monitoring-of-dermal-and-air-exposure-to-cobalt-at-a-swedish-hard-metal-production-plant-does-dermal-exposure-contribute-to-uptake
#19
Maria Klasson, Magnus Lindberg, Ing-Liss Bryngelsson, Helena Arvidsson, Carin Pettersson, Bente Husby, Håkan Westberg
BACKGROUND: Occupational exposure to cobalt is well established in hard metal manufacture. Cobalt is known to cause contact allergy, asthma, hard metal lung disease, and lung cancer. The relationship between skin exposure and uptake determined in blood has not been extensively investigated. OBJECTIVE: To examine whether skin and inhalable air exposure to cobalt contributes to uptake, determined as cobalt in blood, in a hard metal manufacturing factory. METHODS: The amount of cobalt on the skin found with an acid wash technique, the air concentrations of inhalable cobalt and cobalt blood concentrations were determined and correlated in exposed workers...
October 2017: Contact Dermatitis
https://www.readbyqxmd.com/read/28672829/fexofenadine-suppresses-delayed-type-hypersensitivity-in-the-murine-model-of-palladium-allergy
#20
Ryota Matsubara, Kenichi Kumagai, Hiroaki Shigematsu, Kazutaka Kitaura, Yasunari Nakasone, Satsuki Suzuki, Yoshiki Hamada, Ryuji Suzuki
Palladium is frequently used in dental materials, and sometimes causes metal allergy. It has been suggested that the immune response by palladium-specific T cells may be responsible for the pathogenesis of delayed-type hypersensitivity in study of palladium allergic model mice. In the clinical setting, glucocorticoids and antihistamine drugs are commonly used for treatment of contact dermatitis. However, the precise mechanism of immune suppression in palladium allergy remains unknown. We investigated inhibition of the immune response in palladium allergic mice by administration of prednisolone as a glucocorticoid and fexofenadine hydrochloride as an antihistamine...
June 25, 2017: International Journal of Molecular Sciences
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