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https://www.readbyqxmd.com/read/28444979/false-negative-single-antigen-bead-assay-is-it-always-an-effect-of-prozone
#1
Dharmendra Jain, Jui Choudhuri, Rajni Chauhan, Pranav Dorwal, Deepak Sharma, Aseem K Tiwari, Vimarsh Raina
BACKGROUND: Bead based flow cytometry and Luminex play a major role in identification of alloantibodies in renal transplant work-up. Strong sensitization events may lead to prozone phenomenon that can affect single antigen bead (SAB) assay and result in false negativity. However, this can also be due to high titer of other blocking antibodies. While methods like, heat inactivation, C1 inhibitor, Ethylene diamine tetra-acetic-acid and Dithio threitol treatment can remove interfering antibodies of complement and IgM, these methods are not optimal if false negativity is due to prozone effect, which is high titer of antibodies alone...
April 26, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28444848/biologically-meaningful-scents-a-framework-for-understanding-predator-prey-research-across-disciplines
#2
Michael H Parsons, Raimund Apfelbach, Peter B Banks, Elissa Z Cameron, Chris R Dickman, Anke S K Frank, Menna E Jones, Ian S McGregor, Stuart McLean, Dietland Müller-Schwarze, Elisa E Sparrow, Daniel T Blumstein
Fear of predation is a universal motivator. Because predators hunt using stealth and surprise, there is a widespread ability among prey to assess risk from chemical information - scents - in their environment. Consequently, scents often act as particularly strong modulators of memory and emotions. Recent advances in ecological research and analytical technology are leading to novel ways to use this chemical information to create effective attractants, repellents and anti-anxiolytic compounds for wildlife managers, conservation biologists and health practitioners...
April 26, 2017: Biological Reviews of the Cambridge Philosophical Society
https://www.readbyqxmd.com/read/28444440/paradoxical-undressing-associated-with-subarachnoid-hemorrhage-in-a-non-hypothermia-case
#3
Emilienne Descloux, Kewin Ducrot, Maria Pia Scarpelli, Alexander Lobrinus, Cristian Palmiere
Paradoxical undressing is a phenomenon characterizing some fatal hypothermia cases. The victims, despite low environmental temperatures, paradoxically remove their clothes due to a sudden feeling of warmth. In this report, we describe a case of suspected paradoxical undressing in a non-hypothermia case. The victim, a 51-year-old Caucasian man, was found dead wearing only sneakers and socks. All other clothing was found in his car. Postmortem investigations allowed the hypothesis of hypothermia to be ruled out and revealed the presence of a ruptured cerebral aneurysm that caused a subarachnoid hemorrhage, the latter responsible for the death...
April 25, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28444033/regional-health-inequalities-changes-observed-in-brazil-from-2000-2016
#4
Mariana Vercesi de Albuquerque, Ana Luiza d'Ávila Viana, Luciana Dias de Lima, Maria Paula Ferreira, Edgard Rodrigues Fusaro, Fabíola Lana Iozzi
Advances in reducing poverty and inequalities in the 2000s had a paradoxical effect in Brazil. This article examines how socioeconomic transformations, and the complexity of health services, are expressed in the regions established for planning purposes and the inter-governmental management of the Brazilian Unified Health System. An effort was made to identify and explain differences in the compositions of the 438 existing health regions and their spatial distribution by comparing situations observed in 2016 with those in 2000...
April 2017: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/28441756/the-interactions-between-zno-nanoparticles-nps-and-%C3%AE-linolenic-acid-lna-complexed-to-bsa-did-not-influence-the-toxicity-of-zno-nps-on-hepg2-cells
#5
Yiwei Zhou, Xin Fang, Yu Gong, Aiping Xiao, Yixi Xie, Liangliang Liu, Yi Cao
BACKGROUND: Nanoparticles (NPs) entering the biological environment could interact with biomolecules, but little is known about the interaction between unsaturated fatty acids (UFA) and NPs. METHODS: This study used α-linolenic acid (LNA) complexed to bovine serum albumin (BSA) for UFA and HepG2 cells for hepatocytes. The interactions between BSA or LNA and ZnO NPs were studied. RESULTS: The presence of BSA or LNA affected the hydrodynamic size, zeta potential, UV-Vis, fluorescence, and synchronous fluorescence spectra of ZnO NPs, which indicated an interaction between BSA or LNA and NPs...
April 24, 2017: Nanomaterials
https://www.readbyqxmd.com/read/28441504/paradoxical-long-timespan-opening-of-the-hole-in-self-supported-water-films-of-nanometrical-thickness
#6
Zahava Barkay, Edward Bormashenko
Opening of holes in self-supported thin (nano-scaled) water films has been in situ investigated with the environmental scanning electron microscope. Opening of a hole occurs within a two-stage process. At the first stage the rim surrounding a hole is formed, resembling the process which is observed under puncturing of soap bubbles. At the second stage the exponential growth of the hole is observed, with a characteristic time of a dozen of seconds. We explain the exponential kinetics of holes' growth by the balance between inertia (gravity) and viscous dissipation...
April 25, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28441401/ancient-genes-establish-stress-induced-mutation-as-a-hallmark-of-cancer
#7
Luis Cisneros, Kimberly J Bussey, Adam J Orr, Milica Miočević, Charles H Lineweaver, Paul Davies
Cancer is sometimes depicted as a reversion to single cell behavior in cells adapted to live in a multicellular assembly. If this is the case, one would expect that mutation in cancer disrupts functional mechanisms that suppress cell-level traits detrimental to multicellularity. Such mechanisms should have evolved with or after the emergence of multicellularity. This leads to two related, but distinct hypotheses: 1) Somatic mutations in cancer will occur in genes that are younger than the emergence of multicellularity (1000 million years [MY]); and 2) genes that are frequently mutated in cancer and whose mutations are functionally important for the emergence of the cancer phenotype evolved within the past 1000 million years, and thus would exhibit an age distribution that is skewed to younger genes...
2017: PloS One
https://www.readbyqxmd.com/read/28440904/the-european-court-of-human-rights-on-planned-home-birth-resolution-of-a-paradoxical-ruling
#8
Frank A Chervenak, Amos Grünebaum, Birgit Arabin, Laurence B McCullough
On November 15, 2016, the European Court of Human Rights issued its judgment in the case of Krejzová v. the Czech Republic, which concerned the policy of the Czech State not to provide skilled attendance by midwives at planned home births. The issue was whether this policy violated Article 8 of the European Convention on Human Rights: "Everyone has the right to respect for his private and family life, his home and his correspondence."(1) The Czech health policy before the Court did not prohibit unattended planned home birth but it created technical requirements for attendance at planned home birth that had the effect of prohibiting attendance by midwives...
April 25, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28440735/nuclear-factor-e2-related-factor-2-knockdown-enhances-glucose-uptake-and-alters-glucose-metabolism-in-aml12-hepatocytes
#9
Xiaoyang Yuan, Huijing Huang, Yi Huang, Jinli Wang, Jinhua Yan, Ling Ding, Cuntai Zhang, Le Zhang
Nuclear factor E2-related factor 2 (Nrf2) is a transcription factor known to induce the expression of a variety of antioxidant and detoxification genes. Recently, increasing evidence has revealed roles for Nrf2 in glucose, lipid, and energy metabolism; however, the exact functions of Nrf2 in hepatocyte biology are largely unclear. In the current study, the transient knockdown of Nrf2 via siRNA transfection enhanced the glucose uptake of fasting AML12 hepatocytes to 325.3 ± 11.1% ( P < 0.05) of that of untransfected control cells...
May 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28439569/the-obesity-paradox-in-kidney-disease-how-to-reconcile-it-with-obesity-management
#10
Kamyar Kalantar-Zadeh, Connie M Rhee, Jason Chou, S Foad Ahmadi, Jongha Park, Joline Lt Chen, Alpesh N Amin
Obesity, a risk factor for de novo chronic kidney disease (CKD), confers survival advantages in advanced CKD. This so-called obesity paradox is the archetype of the reverse epidemiology of cardiovascular risks, in addition to the lipid, blood pressure, adiponectin, homocysteine, and uric acid paradoxes. These paradoxical phenomena are in sharp contradistinction to the known epidemiology of cardiovascular risks in the general population. In addition to advanced CKD, the obesity paradox has also been observed in heart failure, chronic obstructive lung disease, liver cirrhosis, and metastatic cancer, as well as in the elderly...
March 2017: KI Reports
https://www.readbyqxmd.com/read/28439271/cross-talk-between-inhibitory-immunoreceptor-tyrosine-based-activation-motif-signaling-and-toll-like-receptor-pathways-in-macrophages-and-dendritic-cells
#11
REVIEW
Ivan Hirsch, Vaclav Janovec, Ruzena Stranska, Nathalie Bendriss-Vermare
The innate immune cells sense microbial infection and self-ligands by pathogen recognition receptors (PRRs), such as toll-like receptors (TLRs) and regulatory receptors (RRs), associated with immunoreceptor tyrosine-based activation motif (ITAM). Rapid activation and concerted action of PRRs signaling and feedback inhibitory mechanisms must be engaged to ensure the host defense functions and to prevent cytotoxicity associated with excessive activation. ITAM-associated RRs can generate stimulatory or, paradoxically, inhibitory signals...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28438552/immunomodulation-of-autoimmune-arthritis-by-pro-inflammatory-cytokines
#12
REVIEW
Eugene Y Kim, Kamal D Moudgil
Pro-inflammatory cytokines promote autoimmune inflammation and tissue damage, while anti-inflammatory cytokines help resolve inflammation and facilitate tissue repair. Over the past few decades, this general feature of cytokine-mediated events has offered a broad framework to comprehend the pathogenesis of autoimmune and other immune-mediated diseases, and to successfully develop therapeutic approaches for diseases such as rheumatoid arthritis (RA). Anti-tumor necrosis factor-α (TNF-α) therapy is a testimony in support of this endeavor...
April 21, 2017: Cytokine
https://www.readbyqxmd.com/read/28438306/relation-of-quantity-of-subepicardial-adipose-tissue-to-infarct-size-in-patients-with-st-elevation-myocardial-infarction
#13
Loïc Bière, Vianney Behaghel, Victor Mateus, Antonildes Assunção, Christoph Gräni, Kais Ouerghi, Sylvain Grall, Serge Willoteaux, Fabrice Prunier, Raymond Kwong, Alain Furber
According to the so-called obesity paradox, obesity might present a protective role in patients with myocardial infarction. We aimed to assess the influence of the epicardial adipose tissue (EAT) volume on cardiac healing and remodeling in patients with acute ST-elevation myocardial infarction. We prospectively included 193 consecutive patients presenting a first STEMI without known coronary artery disease. Cardiac magnetic resonance imaging was performed at baseline and after a 3-month follow-up. EAT volume was computed, and the population was divided into quartiles: the highest quartile of EAT defining the high EAT group (h-EAT)...
March 29, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28438221/isolated-splenic-tuberculosis-with-subsequent-paradoxical-deterioration-a-case-report
#14
Frederick Wangai, Loice Achieng, George Otieno, Jacqueline Njoroge, Tabitha Wambaire, Jamilla Rajab
BACKGROUND: Isolated tuberculosis of the spleen has been described occasionally in literature, mostly in immunosuppressed individuals with various risk factors. Sequestration in the spleen makes such Mycobacterium tuberculosis infection difficult to diagnose. This report describes an extremely rare case of isolated splenic tuberculosis in an immunocompetent individual. CASE PRESENTATION: A 26 year old Kenyan male presented with pyrexia of unknown origin, with negative screening tests for bacterial, fungal and parasitic infections...
April 24, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28438129/severe-type-1-upgrading-leprosy-reaction-in-a-renal-transplant-recipient-a-paradoxical-manifestation-associated-with-deficiency-of-antigen-specific-regulatory-t-cells
#15
Ana Paula Vieira, Maria Angela Bianconcini Trindade, Flávio Jota de Paula, Neusa Yurico Sakai-Valente, Alberto José da Silva Duarte, Francine Brambate Carvalhinho Lemos, Gil Benard
BACKGROUND: Due to its chronic subclinical course and large spectrum of manifestations, leprosy often represents a diagnostic challenge. Even with proper anti-mycobacteria treatment, leprosy follow up remains challenging: almost half of leprosy patients may develop reaction episodes. Leprosy is an infrequent complication of solid organ transplant recipients. This case report illustrates the challenges in diagnosing and managing leprosy and its reactional states in a transplant recipient...
April 24, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28437437/use-of-short-interfering-rna-delivered-by-cationic-liposomes-to-enable-efficient-down-regulation-of-ptpn22-gene-in-human-t-lymphocytes
#16
Valentina Perri, Marsha Pellegrino, Francesca Ceccacci, Anita Scipioni, Stefania Petrini, Elena Gianchecchi, Anna Lo Russo, Serena De Santis, Giovanna Mancini, Alessandra Fierabracci
Type 1 diabetes and thyroid disease are T cell-dependent autoimmune endocrinopathies. The standard substitutive administration of the deficient hormones does not halt the autoimmune process; therefore, development of immunotherapies aiming to preserve the residual hormonal cells, is of crucial importance. PTPN22 C1858T mutation encoding for the R620W lymphoid tyrosine phosphatase variant, plays a potential pathophysiological role in autoimmunity. The PTPN22 encoded protein Lyp is a negative regulator of T cell antigen receptor signaling; R620W variant, leading to a gain of function with paradoxical reduced T cell activation, may represent a valid therapeutic target...
2017: PloS One
https://www.readbyqxmd.com/read/28437244/second-transcatheter-closure-for-residual-shunt-following-percutaneous-closure-of-patent-foramen-ovale
#17
Njomeza Susuri, Slayman Obeid, Mirjam Ulmi, George Cm Siontis, Andreas Wahl, Stephan Windecker, Fabian Nietlispach, Bernhard Meier, Fabien Praz
AIMS: Residual shunt following percutaneous patent foramen ovale (PFO) closure has been described in up to 49% of the patients and is associated with recurrent cerebrovascular events. Our aim was to evaluate the safety, feasibility, and mid-term outcomes of transcatheter residual shunt closure. METHODS AND RESULTS: From 1994 to July 2016, 2679 patients underwent transcatheter PFO closure for treatment of presumed paradoxical embolism at our institution. Among them, 100 patients (3...
April 25, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28436782/subverting-space-an-exploration-of-a-dance-therapy-workshop-apparatus-for-schizophrenics
#18
Silvia Lippi, Laetitia Petit
The authors created a dance workshop for schizophrenic patients designed to address their singular experience of space, in which the categories of interior and exterior do not function as limits. The space of the workshop, which, paradoxically, is thought in terms of the psychic space of schizophrenic patients by playing on its borderless quality, creates a continuity between the psychiatric hospital and the external world, and thus helps to prevent the segregation and isolation of such patients. This continuity is established on the basis of both the physical architecture of the workshop setting and the practice of dancing itself...
April 2017: Psychoanalytic Review
https://www.readbyqxmd.com/read/28436640/intravitreal-aflibercept-for-patients-with-diabetic-macular-edema-refractory-to-bevacizumab-or-ranibizumab-analysis-of-response-to-aflibercept
#19
Yen-Yi Chen, Pei-Yao Chang, Jia-Kang Wang
PURPOSE: To investigate the short-term efficacy and safety of intravitreal aflibercept in a case series of patients with diabetic macular edema (DME) refractory to ranibizumab or bevacizumab. DESIGN: A retrospective chart review. METHODS: From September 2013 to March 2016, we identified patients with DME who developed resistance to bevacizumab or ranibizumab. Three monthly intravitreal aflibercept injections were administered in refractory cases...
April 10, 2017: Asia-Pacific Journal of Ophthalmology
https://www.readbyqxmd.com/read/28436174/endobronchial-and-transbronchial-biopsy-experience-a-united-kingdom-survey
#20
REVIEW
Janet Fallon, Andrew R L Medford
BACKGROUND: Trainees are performing fewer bronchoscopies as a result of the increased use of endobronchial ultrasound-guided transbronchial needle aspiration. Workforce planning and changes in trainee working patterns may also have compounded this situation. We investigated current trends in endobronchial biopsy (EBB) and transbronchial biopsy (TBB) training and competency in respiratory trainees and consultants across the United Kingdom. METHODS: We performed a national survey and received 131 online responses from 58 consultants and 73 registrars across 13 United Kingdom deaneries...
April 24, 2017: Thoracic Cancer
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