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https://www.readbyqxmd.com/read/28528339/molecular-diagnosis-of-tubercular-lymphadenopathy-from-fine-needle-aspirates-in-pediatric-patients
#1
Vivek Gupta, Arvind Bhake
OBJECTIVES: The diagnosis of peripheral tubercular lymphadenopathy (TBLN) in pediatric patients is often a challenge because features evident on fine-needle aspiration cytology (FNAC) or tissue biopsy can be deceptive for the reason that they result from an immunological response. This study aimed to evaluate polymerase chain reaction (PCR) for Mycobacterium tuberculosis complex (MTBC) in pediatric patients under clinical suspicion for TBLN and to assess its role in the evaluation of cases cytodiagnosed as reactive lymphoid hyperplasia...
May 20, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28518087/multimer-page-a-method-for-capturing-and-resolving-protein-complexes-in-biological-samples
#2
Tyler Rhinesmith, Bryan A Killinger, Akhil Sharma, Anna Moszczynska
There are many well-developed methods for purifying and studying single proteins and peptides. However, most cellular functions are carried out by networks of interacting protein complexes, which are often difficult to investigate because their binding is non-covalent and easily perturbed by purification techniques. This work describes a method of stabilizing and separating native protein complexes from unmodified tissue using two-dimensional polyacrylamide gel electrophoresis. Tissue lysate is loaded onto a non-denaturing blue-native polyacrylamide gel, then an electric current is applied until the protein migrates a short distance into the gel...
May 5, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28513711/a-novel-approach-for-fabricating-highly-tunable-and-fluffy-bioinspired-3d-poly-vinyl-alcohol-pva-fiber-scaffolds
#3
Sunanda Roy, Shreyas Kuddannaya, Tanya Das, Heng Yeong Lee, Jacob Lim, Xiao 'Matthew' Hu, Yue Chee Yoon, Jaehwan Kim
The excellent biocompatibility, biodegradability and chemo-thermal stability of poly(vinyl alcohol) (PVA) have been harnessed in diverse practical applications. These properties have motivated the fabrication of high performance PVA based nanofibers with adequate control over the micro and nano-architectures and surface chemical interactions. However, the high water solubility and hydrophilicity of the PVA polymer limits the application of the electrospun PVA nanofibers in aqueous environments owing to instantaneous dissolution...
May 17, 2017: Nanoscale
https://www.readbyqxmd.com/read/28510696/autologous-adipose-derived-tissue-matrix-part-ii-implantation-biology
#4
Stephen A Schendel
Background: In part 1 of this study it was shown that liposuctioned fat could be a sufficient source of autologous collagen for use as a filler or in reconstruction. The collagen composition in liposuctioned fat was shown to form a cross-linked helical matrix composed of types II, III, and IV. Additionally, viable adipocytes and fibroblasts among other cells were found. Objectives: The purpose of this research was to study the biology of this matrix after subsequent implantation compared to Juvederm (Allergan, Parsippany, NJ) common soft tissue filler...
May 16, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/28504684/fully-automated-5-plex-fluorescent-immunohistochemistry-with-tyramide-signal-amplification-and-same-species-antibodies
#5
Wenjun Zhang, Antony Hubbard, Tobin Jones, Adriana Racolta, Srabani Bhaumik, Nick Cummins, Liping Zhang, Karl Garsha, Frank Ventura, Mark R Lefever, Zhenqiang Lu, John K Hurley, William A Day, Lidija Pestic-Dragovich, Larry E Morrison, Lei Tang
The ability to simultaneously visualize the presence, abundance, location and functional state of many targets in cells and tissues has been described as a true next-generation approach in immunohistochemistry (IHC). A typical requirement for multiplex IHC (mIHC) is the use of different animal species for each primary (1°Ab) and secondary (2°Ab) antibody pair. Although 1°Abs from different species have been used with differently labeled species-specific 2°Abs, quite often the appropriate combination of antibodies is not available...
May 15, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/28496443/higher-levels-of-secretory-iga-are-associated-with-low-disease-activity-index-in-patients-with-reactive-arthritis-and-undifferentiated-spondyloarthritis
#6
Fabián Salas-Cuestas, Wilson Bautista-Molano, Juan M Bello-Gualtero, Ivonne Arias, Diana Marcela Castillo, Lorena Chila-Moreno, Rafael Valle-Oñate, Daniel Herrera, Consuelo Romero-Sánchez
INTRODUCTION: Both reactive arthritis (ReA) and undifferentiated spondyloarthritis (uSpA) belong to the group of autoinflammatory diseases called spondyloarthritis (SpA). Hypotheses have been proposed about a relationship between the intestinal mucosa and inflammation of joint tissues. The role of immunoglobulin IgA or secretory immunoglobulin A (SIgA) in the inflammatory and/or clinical activity of patients with SpA remains poorly understood. OBJECTIVE: To evaluate the status of total IgA and SIgA, and the association among the levels of SIgA, IgA, IgA anti-Chlamydia trachomatis, and anti-Shigella spp...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28493527/characterization-of-a-sandwich-elisa-for-the-quantification-of%C3%A2-all-human-periostin-isoforms
#7
Elisabeth Gadermaier, Manfred Tesarz, Andreea Ana-Maria Suciu, Jacqueline Wallwitz, Gabriela Berg, Gottfried Himmler
BACKGROUND: Periostin (osteoblast-specific factor OSF-2) is a secreted protein occurring in seven known isoforms, and it is involved in a variety of biological processes in osteology, tissue repair, oncology, cardiovascular and respiratory systems or allergic manifestations. To analyze functional aspects of periostin, or the ability of periostin as potential biomarker in physiological and pathological conditions, there is the need for a precise, well-characterized assay that detects periostin in peripheral blood...
May 11, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28489940/isolation-and-characterization-of-canine-perivascular-stem-stromal-cells-for-bone-tissue-engineering
#8
Aaron W James, Xinli Zhang, Mihaela Crisan, Winters R Hardy, Pei Liang, Carolyn A Meyers, Sonja Lobo, Venu Lagishetty, Martin K Childers, Greg Asatrian, Catherine Ding, Yu-Hsin Yen, Erin Zou, Kang Ting, Bruno Peault, Chia Soo
For over 15 years, human subcutaneous adipose tissue has been recognized as a rich source of tissue resident mesenchymal stem/stromal cells (MSC). The isolation of perivascular progenitor cells from human adipose tissue by a cell sorting strategy was first published in 2008. Since this time, the interest in using pericytes and related perivascular stem/stromal cell (PSC) populations for tissue engineering has significantly increased. Here, we describe a set of experiments identifying, isolating and characterizing PSC from canine tissue (N = 12 canine adipose tissue samples)...
2017: PloS One
https://www.readbyqxmd.com/read/28483490/nano-sized-iron-particles-may-induce-multiple-pathways-of-cell-death-following-generation-of-mistranscripted-rna-in-human-corneal-epithelial-cells
#9
Eun-Jung Park, Je-Byung Che, Seuyoung Kang, Jungmook Lyu, Uiseok Jeong, Changjoo Yeom, Younghun Kim, Jaerak Chang
Iron is closely associated with an ambient particulate matters-induced inflammatory response, and the cornea that covers the front of the eye, is among tissues exposed directly to ambient particulate matters. Prior to this study, we confirmed that nano-sized iron particles (FeNPs) can penetrate the cornea. Thus, we identified the toxic mechanism of FeNPs using human corneal epithelial cells. At 24h after exposure, FeNPs located inside autophagosome-like vacuoles or freely within human corneal epithelial cells...
May 5, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28482788/defensive-and-offensive-cross-reactive-antibodies-elicited-by-pathogens-the-good-the-bad-and-the-ugly
#10
Daria Augustyniak, Grażyna Majkowska-Skrobek, Justyna Roszkowiak, Agata Dorotkiewicz-Jach
Understanding how immunity to pathogens develops is crucial for progress in the quest for effective vaccines. Intraspecies and interspecies cross-reacting antibodies are produced in high frequency against immune-relevant and shared microbial epitopes. It has been confirmed that cross-reactive antigens may have a crucial role in natural epidemiology to a particular infection and that cross-protection may influence the outcome of natural infections. On the other hand, the action of cross-reactive antibodies may be very harmful for the host...
May 7, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28478688/gene-delivery-of-activated-factor-vii-using-alternative-aav-serotype-improves-hemostasis-in-hemophiliac-mice-with-fviii-inhibitors-and-aav-neutralizing-antibodies
#11
Junjiang Sun, Baolai Hua, R Jude Samulski, Chengwen Li
While therapeutic expression of coagulation factors from adeno-associated virus (AAV) vectors has been successfully achieved in patients with hemophilia, neutralizing antibodies to the vector and inhibitory antibodies to the transgene severely limit efficacy. Indeed, approximately 40% of mice transduced with human Factor VIII using the AAV8 serotype developed inhibitory antibodies to Factor VIII (FVIII inhibitor), as well as extremely high titers (≥ 1:500) of neutralizing antibodies to AAV8. To correct hemophilia in these mice we used AAV9, a serotype with low in vitro cross-reactivity (≤ 1:5) to anti-AAV8, to deliver mouse activated Factor VII (mFVIIa)...
May 6, 2017: Human Gene Therapy
https://www.readbyqxmd.com/read/28475122/harnessing-local-immunity-for-an-effective-universal-swine-influenza-vaccine
#12
REVIEW
Elma Tchilian, Barbara Holzer
Influenza A virus infections are a global health threat to humans and are endemic in pigs, contributing to decreased weight gain and suboptimal reproductive performance. Pigs are also a source of new viruses of mixed swine, avian, and human origin, potentially capable of initiating human pandemics. Current inactivated vaccines induce neutralising antibody against the immunising strain but rapid escape occurs through antigenic drift of the surface glycoproteins. However, it is known that prior infection provides a degree of cross-protective immunity mediated by cellular immune mechanisms directed at the more conserved internal viral proteins...
May 5, 2017: Viruses
https://www.readbyqxmd.com/read/28471663/the-identification-of-4-aminomethyl-6-trifluoromethyl-2-phenoxy-pyridine-derivatives-as-potent-selective-and-orally-efficacious-inhibitors-of-the-copper-dependent-amine-oxidase-lysyl-oxidase-like-2-loxl2
#13
Martin W Rowbottom, Gretchen Bain, Imelda Calderon, Taylor Lasof, David Lonergan, Andiliy Lai, Fei Huang, Janice Darlington, Patricia Prodanovich, Angelina M Santini, Christopher D King, Lance Goulet, Kristen E Shannon, Gina L Ma, Katherine Nguyen, Deidre A MacKenna, Jilly F Evans, John H Hutchinson
LOXL2 catalyzes the oxidative deamination of ε-amines of lysine and hydroxylysine residues within collagen and elastin, generating reactive aldehydes (allysine). Condensation with other allysines or lysines drives formation of inter- and intramolecular cross-linkages, a process critical for remodeling of the ECM. Dysregulation of this process can lead to fibrosis and LOXL2 is known to be upregulated in fibrotic tissue. Small-molecules that directly inhibit LOXL2 catalytic activity represent a useful option for the treatment of fibrosis...
May 4, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28467818/surrogate-wnt-agonists-that-phenocopy-canonical-wnt-and-%C3%AE-catenin-signalling
#14
Claudia Y Janda, Luke T Dang, Changjiang You, Junlei Chang, Wim de Lau, Zhendong A Zhong, Kelley S Yan, Owen Marecic, Dirk Siepe, Xingnan Li, James D Moody, Bart O Williams, Hans Clevers, Jacob Piehler, David Baker, Calvin J Kuo, K Christopher Garcia
Wnt proteins modulate cell proliferation and differentiation and the self-renewal of stem cells by inducing β-catenin-dependent signalling through the Wnt receptor frizzled (FZD) and the co-receptors LRP5 and LRP6 to regulate cell fate decisions and the growth and repair of several tissues. The 19 mammalian Wnt proteins are cross-reactive with the 10 FZD receptors, and this has complicated the attribution of distinct biological functions to specific FZD and Wnt subtype interactions. Furthermore, Wnt proteins are modified post-translationally by palmitoylation, which is essential for their secretion, function and interaction with FZD receptors...
May 11, 2017: Nature
https://www.readbyqxmd.com/read/28465673/secretory-phospholipase-a2-and-fatty-acid-composition-in-oral-reactive-lesions-a-cross-sectional-study
#15
Ali Hossein Mesgarzadeh, Abolfazl Akbarzadeh, Ali Rasipour, Tannaz Rasipour, Amir Mehdizadeh, Maghsod Shaaker
BACKGROUND: Oral reactive lesions are the most common lesions of oral cavity. Phospholipases and fatty acids play key roles in the creation of inflammation by change in metabolic activities and production of lipid mediators. The aim of this study was to investigate the amount of secretory phospholipase-A2 (sPLA2) and difference of fatty acid pattern in oral reactive hyperplasia and adjacent normal appearing tissues in patients with oral reactive lesions. METHODS: Paired samples of oral hyperplastic (OH) and adjacent normal-appearing tissue of 45 patients were investigated in this study...
2017: Cancer Cell International
https://www.readbyqxmd.com/read/28442530/breach-of-autoreactive-b-cell-tolerance-by-post-translationally-modified-proteins
#16
Jacqueline S Dekkers, Marije K Verheul, Jeroen N Stoop, Bisheng Liu, Andreea Ioan-Facsinay, Peter A van Veelen, Arnoud H de Ru, George M C Janssen, Martin Hegen, Steve Rapecki, Tom W J Huizinga, Leendert A Trouw, René E M Toes
OBJECTIVES: Over 50% of patients with rheumatoid arthritis (RA) harbour a variety of anti-modified protein antibodies (AMPA) against different post-translationally modified (PTM) proteins, including anti-carbamylated protein (anti-CarP) antibodies. At present, it is unknown how AMPA are generated and how autoreactive B cell responses against PTM proteins are induced. Here we studied whether PTM foreign antigens can breach B cell tolerance towards PTM self-proteins. METHODS: Serum reactivity towards five carbamylated proteins was determined for 160 patients with RA and 40 healthy individuals...
April 25, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28438806/emerging-affinity-based-proteomic-technologies-for-large-scale-plasma-profiling-in-cardiovascular-disease
#17
REVIEW
J Gustav Smith, Robert E Gerszten
Plasma biomarkers that reflect molecular states of the cardiovascular system are central for clinical decision making. Routinely used plasma biomarkers include troponins, natriuretic peptides, and lipoprotein particles, yet interrogate only a modest subset of pathways relevant to cardiovascular disease. Systematic profiling of a larger portion of circulating plasma proteins (the plasma proteome) will provide opportunities for unbiased discovery of novel markers to improve diagnostic or predictive accuracy. In addition, proteomic profiling may inform pathophysiological understanding and point to novel therapeutic targets...
April 25, 2017: Circulation
https://www.readbyqxmd.com/read/28438120/transcriptomic-analysis-links-gene-expression-to-unilateral-pollen-pistil-reproductive-barriers
#18
Amanda K Broz, Rafael F Guerrero, April M Randle, You Soon Baek, Matthew W Hahn, Patricia A Bedinger
BACKGROUND: Unilateral incompatibility (UI) is an asymmetric reproductive barrier that unidirectionally prevents gene flow between species and/or populations. UI is characterized by a compatible interaction between partners in one direction, but in the reciprocal cross fertilization fails, generally due to pollen tube rejection by the pistil. Although UI has long been observed in crosses between different species, the underlying molecular mechanisms are only beginning to be characterized...
April 24, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28435676/understanding-cd8-t-cell-responses-toward-the-native-and-alternate-hla-a-02-01-restricted-wt1-epitope
#19
Thi Ho Nguyen, Amabel Cl Tan, Sue D Xiang, Anne Goubier, Kim L Harland, E Bridie Clemens, Magdalena Plebanski, Katherine Kedzierska
The Wilms' tumor 1 (WT1) antigen is expressed in solid and hematological malignancies, but not healthy tissues, making it a promising target for cancer immunotherapies. Immunodominant WT1 epitopes, the native HLA-A2/WT1126-134 (RMFPNAPYL) (HLA-A2/RMFPNAPYL epitope (WT1A)) and its modified variant YMFPNAPYL (HLA-A2/YMFPNAPYL epitope (WT1B)), can induce WT1-specific CD8(+) T cells, although WT1B is more stably bound to HLA-A*02:01. Here, to further determine the benefits of those two targets, we assessed the naive precursor frequencies; immunogenicity and cross-reactivity of CD8(+) T cells directed toward these two WT1 epitopes...
March 2017: Clinical & Translational Immunology
https://www.readbyqxmd.com/read/28432036/increased-inflammation-from-childhood-to-adolescence-predicts-sleep-apnea-in-boys-a-preliminary-study
#20
Jordan Gaines, Alexandros N Vgontzas, Julio Fernandez-Mendoza, Fan He, Susan L Calhoun, Duanping Liao, Edward O Bixler
While chronic systemic inflammation in obstructive sleep apnea (OSA) has been traditionally considered a consequence of intermittent hypoxia, several treatment studies targeting inflammation suggest that this process may precede the development of the disorder. A recent cross-sectional study in the Penn State Child Cohort (PSCC) revealed that inflammation largely mediates the association between visceral adiposity and OSA in adolescence. The purpose of this study was to examine for the first time whether, longitudinally, inflammation precedes OSA during this developmental period...
April 18, 2017: Brain, Behavior, and Immunity
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