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https://www.readbyqxmd.com/read/29776612/immunohistochemical-investigation-of-the-cross-reactivity-of-selected-cell-markers-in-formalin-fixed-paraffin-embedded-lymphoid-tissues-of-franciscana-pontoporia-blainvillei
#1
J Díaz-Delgado, R Ressio, K R Groch, J L Catão-Dias
A considerable amount of knowledge on natural and anthropogenic pathologic conditions affecting different cetacean species has been gained over the last decades. Nonetheless, the immunopathological bases for most of these processes have been poorly documented or remain unknown. Comparative immunopathological investigations in these species are precluded by the limited number of specific antibodies, most of which are not commercially available, and the reduced spectrum of validated and/or cross-reactive ones...
June 2018: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/29763927/reactive-lymphoid-hyperplasia-or-tubercular-lymphadenitis-can-real-time-pcr-on-fine-needle-aspirates-help-physicians-in-concluding-the-diagnosis
#2
Vivek Gupta, Arvind Bhake
BACKGROUND: Enlarged lymph nodes in adult patients often present a diagnostic challenge. In the absence of granuloma or necrosis, the cytology/tissue findings are misleading and relate the enlarged lymph nodes to reactive lymphoid hyperplasia (RLH), because granuloma formation is an immunological response that usually takes 14-100 days to develop. This study assesses the role of real-time (RT)-PCR in the diagnosis of the Mycobacterium complex (MTBC) in lymph node aspirates compared with culture in cases of RLH...
May 15, 2018: Acta Cytologica
https://www.readbyqxmd.com/read/29760069/heterometallic-ru-pt-metallacycle-for-two-photon-photodynamic-therapy
#3
Zhixuan Zhou, Jiangping Liu, Thomas W Rees, Heng Wang, Xiaopeng Li, Hui Chao, Peter J Stang
As an effective and noninvasive treatment of various diseases, photodynamic therapy (PTD) relies on the combination of light, a photosensitizer, and oxygen to generate cytotoxic reactive oxygen species that can damage malignant tissue. Much attention has been paid to covalent modifications of the photosensitizers to improve their photophysical properties and to optimize the pathway of the photosensitizers interacting with cells within the target tissue. Herein we report the design and synthesis of a supramolecular heterometallic Ru-Pt metallacycle via coordination-driven self-assembly...
May 14, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29756042/skeletal-muscle-metrics-on-clinical-18-f-fdg-pet-ct-predict-health-outcomes-in-patients-with-sarcoma
#4
Brent Foster, Robert D Boutin, Leon Lenchik, David Gedeon, Yu Liu, Vinay Nittur, Ramsey D Badawi, Chin-Shang Li, Robert J Canter, Abhijit J Chaudhari
The aim of this study was to determine the association of measures of skeletal muscle determined from 18 F-FDG PET/CT with health outcomes in patients with soft-tissue sarcoma. 14 patients (8 women and 6 men; mean age 66.5 years) with sarcoma had PET/CT examinations. On CTs of the abdomen and pelvis, skeletal muscle was segmented, and cross-sectional muscle area, muscle volume, and muscle attenuation were determined. Within the segmented muscle, intramuscular fat area, volume, and density were derived. On PET images, the standardized uptake value (SUV) of muscle was determined...
2018: Journal of Nature and Science
https://www.readbyqxmd.com/read/29747392/suppression-of-external-nadph-dehydrogenase-ndb1-in-arabidopsis-thaliana-confers-improved-tolerance-to-ammonium-toxicity-via-efficient-glutathione-redox-metabolism
#5
Anna Podgórska, Monika Ostaszewska-Bugajska, Klaudia Borysiuk, Agata Tarnowska, Monika Jakubiak, Maria Burian, Allan G Rasmusson, Bożena Szal
Environmental stresses, including ammonium (NH₄⁺) nourishment, can damage key mitochondrial components through the production of surplus reactive oxygen species (ROS) in the mitochondrial electron transport chain. However, alternative electron pathways are significant for efficient reductant dissipation in mitochondria during ammonium nutrition. The aim of this study was to define the role of external NADPH-dehydrogenase (NDB1) during oxidative metabolism of NH₄⁺-fed plants. Most plant species grown with NH₄⁺ as the sole nitrogen source experience a condition known as “ammonium toxicity syndrome”...
May 9, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29729451/disease-course-and-long-term-outcome-of-juvenile-localized-scleroderma-experience-from-a-single-pediatric-rheumatology-centre-and-literature-review
#6
REVIEW
Giorgia Martini, Gloria Fadanelli, Anna Agazzi, Fabio Vittadello, Alessandra Meneghel, Francesco Zulian
Juvenile Localized Scleroderma (JLS) is a rare disorder that may cause severe aesthetic sequelae and functional disability. To date, data on natural history and long-term outcome are discordant and difficult to compare due to the heterogeneity of clinical subtypes, treatments and methods to evaluate activity and outcome in previous studies. A retrospective and cross-sectional study including 133 patients followed between January 1991 and December 2016 was conducted at our Pediatric Rheumatology Centre. Disease course was drawn by retrospective analysis of patients' clinical features, treatment, disease course and outcome at the last evaluation...
May 2, 2018: Autoimmunity Reviews
https://www.readbyqxmd.com/read/29728852/glial-cells-shape-pathology-and-repair-after-spinal-cord-injury
#7
REVIEW
Andrew D Gaudet, Laura K Fonken
Glial cell types were classified less than 100 years ago by del Rio-Hortega. For instance, he correctly surmised that microglia in pathologic central nervous system (CNS) were "voracious monsters" that helped clean the tissue. Although these historical predictions were remarkably accurate, innovative technologies have revealed novel molecular, cellular, and dynamic physiologic aspects of CNS glia. In this review, we integrate recent findings regarding the roles of glia and glial interactions in healthy and injured spinal cord...
May 4, 2018: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/29719092/evaluation-of-the-toxicity-effects-of-silk-fibroin-on-human-lymphocytes-and-monocytes
#8
Parvaneh Naserzadeh, Seyed Alireza Mortazavi, Khadijeh Ashtari, Ahmad Salimi, Mehdi Farokhi, Jalal Pourahmad
Silk fibroin nanoparticles (SFNPs) as a natural polymer have been utilized in biomedical applications such as suture, tissue engineering-based scaffolds, and drug delivery carriers. Since there is little data regarding the toxicity effects on different cells and tissues, we aimed to determine the toxicity mechanisms of SFNPs on human lymphocytes and monocytes based on reliable methods. Our results showed that SFNPs (0.5, 1, and 2 mg/mL) induced oxidative stress via increasing reactive oxygen species production, mitochondrial membrane potential (∆Ψ) collapse, which was correlated to cytochrome c release and Adenosine diphosphate (ADP)/Adenosine tri phosphate (ATP) ratio increase as well as lysosomal as another toxicity mechanism, which led to cytosolic release of lysosomal digestive proteases, phosphor lipases, and apoptosis signaling...
May 2, 2018: Journal of Biochemical and Molecular Toxicology
https://www.readbyqxmd.com/read/29708523/fabricating-degradable-thermoresponsive-hydrogels-on-multiple-length-scales-via-reactive-extrusion-microfluidics-self-assembly-and-electrospinning
#9
Daryl Sivakumaran, Emilia Bakaic, Scott B Campbell, Fei Xu, Eva Mueller, Todd Hoare
While various smart materials have been explored for a variety of biomedical applications (e.g., drug delivery, tissue engineering, bioimaging, etc.), their ultimate clinical use has been hampered by the lack of biologically-relevant degradation observed for most smart materials. This is particularly true for temperature-responsive hydrogels, which are almost uniformly based on polymers that are functionally non-degradable (e.g., poly(N-isopropylacrylamide) (PNIPAM) or poly(oligoethylene glycol methacrylate) (POEGMA))...
April 16, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29705036/oxidative-stress-measured-in-vivo-without-an-exogenous-contrast-agent-using-quest-mri
#10
Bruce A Berkowitz
Decades of experimental studies have implicated excessive generation of reactive oxygen species (ROS) in the decline of tissue function during normal aging, and as a pathogenic factor in a vast array of fatal or debilitating morbidities. This massive body of work has important clinical implications since many antioxidants are FDA approved, readily cross blood-tissue barriers, and are effective at improving disease outcomes. Yet, the potential benefits of antioxidants have remained largely unrealized in patients because conventional methods cannot determine the dose, timing, and drug combinations to be used in clinical trials to localize and decrease oxidative stress...
April 25, 2018: Journal of Magnetic Resonance
https://www.readbyqxmd.com/read/29704605/studies-on-immunological-and-degranulation-properties-of-a-galectin-1-purified-from-goat-capra-hircus-heart
#11
Ghulam Md Ashraf, Maged Mostafa Mahmoud, Shams Tabrez
Galectins are mammalian lectins characterized by affinity for β-galactosides and the presence of a conserved carbohydrate recognition domain (CRD). Galectins play crucial role in causation and progression of deadly human diseases like cancer, neurodegenerative disorders and cardiovascular disorders. Available literature reports relevant roles of galectins in innate as well as adaptive immune responses, along with the modulation of acute inflammatory response. In the current study, we purified the goat heart galectin-1 (GHG-1) and carried out its extensive immunological studies...
April 25, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29703861/comparison-of-heterosubtypic-protection-in-ferrets-and-pigs-induced-by-a-single-cycle-influenza-vaccine
#12
Barbara Holzer, Sophie B Morgan, Yumi Matsuoka, Matthew Edmans, Francisco J Salguero, Helen Everett, Sharon M Brookes, Emily Porter, Ronan MacLoughlin, Bryan Charleston, Kanta Subbarao, Alain Townsend, Elma Tchilian
Influenza is a major health threat, and a broadly protective influenza vaccine would be a significant advance. Signal Minus FLU (S-FLU) is a candidate broadly protective influenza vaccine that is limited to a single cycle of replication, which induces a strong cross-reactive T cell response but a minimal Ab response to hemagglutinin after intranasal or aerosol administration. We tested whether an H3N2 S-FLU can protect pigs and ferrets from heterosubtypic H1N1 influenza challenge. Aerosol administration of S-FLU to pigs induced lung tissue-resident memory T cells and reduced lung pathology but not the viral load...
April 27, 2018: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29696093/ultrananocrystalline-diamond-coated-nanoporous-membranes-support-sk-n-sh-neuroblastoma-endothelial-cell-attachment
#13
Kai-Hung Yang, Alexander K Nguyen, Peter L Goering, Anirudha V Sumant, Roger J Narayan
Ultrananocrystalline diamond (UNCD) has been demonstrated to have attractive features for biomedical applications and can be combined with nanoporous membranes for applications in drug delivery systems, biosensing, immunoisolation and single molecule analysis. In this study, free-standing nanoporous UNCD membranes with pore sizes of 100 or 400 nm were fabricated by directly depositing ultrathin UNCD films on nanoporous silicon nitride membranes and then etching away silicon nitride using reactive ion etching...
June 6, 2018: Interface Focus
https://www.readbyqxmd.com/read/29687651/tlr9-deficiency-breaks-tolerance-to-rna-associated-antigens-and-upregulates-tlr7-protein-in-sle1-mice
#14
Teja Celhar, Hiroko Yasuga, Hui-Yin Lee, Olga Zharkova, Shubhita Tripathi, Susannah I Thornhill, Hao K Lu, Bijin Au, Lina H K Lim, Thomas P Thamboo, Shizuo Akira, Edward K Wakeland, John E Connolly, Anna-Marie Fairhurst
OBJECTIVE: Toll-like receptors (TLRs) 7 and 9 are important innate signaling molecules with opposing roles in the development and progression of Systemic Lupus Erythematosus (SLE). While multiple studies support a dependency on TLR7 for disease development, genetic ablation of TLR9 results in severe disease with glomerulonephritis (GN) by a largely unknown mechanism. The present study was designed to examine the suppressive role of TLR9 in the development of severe lupus. METHODS: We crossed Sle1 lupus-prone mice with TLR9-deficient mice to generate Sle1TLR9-/- ...
April 24, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29686318/microcirculation-and-biomarkers-in-patients-with-resistant-or-mild-to-moderate-hypertension-a-cross-sectional-study
#15
Camillo L C Junqueira, Maria Eliane C Magalhães, Andréa Araújo Brandão, Esmeralci Ferreira, Fátima Z G A Cyrino, Priscila A Maranhão, Maria das Graças C Souza, Daniel Alexandre Bottino, Eliete Bouskela
Microcirculation influences peripheral vascular resistance and therefore contributes to arterial blood pressure. The aim of this study was to investigate the correlation between serum markers of inflammation and microcirculatory parameters observed by nailfold videocapillaroscopy (NVC) in patients with resistant (RH, 58 [50-63] years, n = 25) or mild-to-moderate hypertension (MMH, 56 [47-64] years, n = 25) compared to normotensive patients (control group (CG), 33 [27-52] years, n = 25). C-reactive protein (CRP), endothelin, adiponectin, I-CAM and V-CAM levels were obtained by laboratory analysis...
April 23, 2018: Hypertension Research: Official Journal of the Japanese Society of Hypertension
https://www.readbyqxmd.com/read/29682884/durable-engraftment-of-genetically-modified-fviii-secreting-autologous-bone-marrow-stromal-cells-in-the-intramedullary-microenvironment
#16
Sze Sing Lee, Jaichandran Sivalingam, Ajit J Nirmal, Wai Har Ng, Irene Kee, In Chin Song, Chin Yong Kiong, Kristoffer A Gales, Frederic Chua, Edgar M Pena, Bryan E Ogden, Oi Lian Kon
Genetically modified FVIII-expressing autologous bone marrow-derived mesenchymal stromal cells (BMSCs) could cure haemophilia A. However, culture-expanded BMSCs engraft poorly in extramedullary sites. Here, we compared the intramedullary cavity, skeletal muscle, subcutaneous tissue and systemic circulation as tissue microenvironments that could support durable engraftment of FVIII-secreting BMSC in vivo. A zinc finger nuclease integrated human FVIII transgene into PPP1R12C (intron 1) of culture-expanded primary canine BMSCs...
April 23, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29670915/association-of-markers-of-proinflammatory-phenotype-and-beige-adipogenesis-with-metabolic-syndrome-in-chinese-centrally-obese-adults
#17
Wilson K C Leung, Angus P Yu, Christopher W K Lai, Parco M Siu
Background: Visceral adiposity is associated with higher productions of C-reactive protein (CRP) and interleukin-6 (IL-6). Inflammation of obese adipose tissues could contribute to systemic metabolic dysregulation, especially thermogenic activity of white adipose tissues, namely, beige adipogenesis, characterized by altered irisin expression. Thus, we investigated the roles of inflammation and adipocyte beiging in Chinese centrally obese (CO) adults with metabolic syndrome (MetS). Methods: This cross-sectional study was conducted on 54 CO and 58 non-CO subjects drawn from 1492 Chinese people with age and sex matched during November 2010 and August 2013...
2018: Journal of Diabetes Research
https://www.readbyqxmd.com/read/29670259/association-between-fat-mass-adipose-tissue-fat-fraction-per-adipose-tissue-and-metabolic-risks-a-cross-sectional-study-in-normal-overweight-and-obese-adults
#18
Mark Hübers, Corinna Geisler, Anja Bosy-Westphal, Wiebke Braun, Maryam Pourhassan, Thorkild I A Sørensen, Manfred J Müller
BACKGROUND/OBJECTIVES: We investigated whether fat mass (FM) and total adipose tissue (TAT) can be used interchangeably and FM per TAT adds to metabolic risk assessment. SUBJECTS/METHODS: Cross-sectional data were assessed in 377 adults (aged 18-60 years; 51.2% women). FM was measured by either 4-compartment (4C) model or quantitative magnetic resonance (QMR); total-, subcutaneous- and visceral adipose tissue (TAT, SAT, VAT), and liver fat by whole-body MRI; leptin, insulin, homeostasis model assessment of insulin resistance (HOMA-IR), C-reactive protein (CRP), and triglycerides; resting energy expenditure and respiratory quotient by indirect calorimetry were determined...
April 18, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29652832/sympathetic-nerve-hyperactivity-in-the-spleen-causal-for-nonpathogenic-driven-chronic-immune-mediated-inflammatory-diseases-imids
#19
REVIEW
Denise L Bellinger, Dianne Lorton
Immune-Mediated Inflammatory Diseases (IMIDs) is a descriptive term coined for an eclectic group of diseases or conditions that share common inflammatory pathways, and for which there is no definitive etiology. IMIDs affect the elderly most severely, with many older individuals having two or more IMIDs. These diseases include, but are not limited to, type-1 diabetes, obesity, hypertension, chronic pulmonary disease, coronary heart disease, inflammatory bowel disease, and autoimmunity, such as rheumatoid arthritis (RA), Sjőgren's syndrome, systemic lupus erythematosus, psoriasis, psoriatic arthritis, and multiple sclerosis...
April 13, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29609113/prevention-of-alcohol-induced-dna-damage-by-a-proprietary-glycyrrhizin-d-mannitol-product-a-randomized-placebo-controlled-cross-over-human-study
#20
Harsha Chigurupati, Biswajit Auddy, Manish Biyani, Shrabana Chakrabarti, Sidney J Stohs
OBJECTIVES: The purpose of the present study was to evaluate the ability of a proprietary combination of glycyrrhizin and D-mannitol to protect against oxidative damage to DNA associated with acute alcohol consumption by human subjects in a randomized, placebo-controlled cross-over designed study. Excessive alcohol consumption is associated with numerous diseases. Alcohol has been shown to generate reactive oxygen species that can result in DNA damage, leading to genetic and epigenetic changes...
November 6, 2017: Alcohol
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