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https://www.readbyqxmd.com/read/28212183/cxcl12-cxcr4-signaling-contributes-to-the-pathogenesis-of-opioid-tolerance-a-translational-study
#1
Chih-Peng Lin, Kai-Hsiang Kang, Huang-Ju Tu, Ming-Yueh Wu, Tzu-Hung Lin, Houng-Chi Liou, Wei-Zen Sun, Wen-Mei Fu
BACKGROUND: Long-term opioid therapy for chronic pain may lead to analgesic tolerance, especially when administered intrathecally, thus preventing adequate pain relief. Discovering drug targets to treat opioid tolerance using a mechanism-based approach targeting opioid-induced neuroinflammation provides new therapeutic opportunities. In this study, we provide translational evidence that CXCL12/CXCR4 signaling contributes to the pathogenesis of opioid tolerance. METHODS: The CXCL12 levels in the cerebrospinal fluid of opioid-tolerant patients were compared with those of opioid-naive subjects...
March 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28193366/development-of-c60-based-labeling-reagents-for-the-determination-of-low-molecular-weight-compounds-by-matrix-assisted-laser-desorption-ionization-mass-i-determination-of-amino-acids-in-microliter-biofluids
#2
Pin Wu, Hua-Ming Xiao, Jun Ding, Qian-Yun Deng, Fang Zheng, Yu-Qi Feng
Quantification of low molecular weight compounds (<800 Da) using matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI MS) is challenging due to the matrix signal interference at low m/z region and poor reproducibility of MS responses. In this study, a C60 labeling-MALDI MS strategy was proposed for the fast, sensitive and reliable determination of amino acids (AAs) in biofluids. An N-hydroxysuccinimide functionalized C60 was synthesized as the labeling reagent and added as an 880 Da tag to AAs; a carboxyl acid containing C60 was employed as the internal standards to normalize MS variations...
April 1, 2017: Analytica Chimica Acta
https://www.readbyqxmd.com/read/28152418/variation-of-desiccation-tolerance-and-longevity-in-fern-spores
#3
Daniel Ballesteros, Lisa M Hill, Christina Walters
This work contributes to the understanding of plant cell responses to extreme water stress when it is applied at different intensity and duration. Fern spores are used to explore survival at relative humidity (RH)<85% because their unicellular nature eliminates complexities that may arise in multicellular organisms from slower drying and variable responses of different cell types. Fern spore cytoplasm solidifies between 30 and 60% RH and spores survive this transition, but subsequently lose viability. We characterized the kinetics of viability loss in terms of the fluid to solid transition using concepts of water activity (i...
January 15, 2017: Journal of Plant Physiology
https://www.readbyqxmd.com/read/28143428/bk-um-in-patients-with-recurrent-ovarian-cancer-or-peritoneal-cancer-a-first-in-human-phase-i-study
#4
Shingo Miyamoto, Fusanori Yotsumoto, Taeko Ueda, Tatsuya Fukami, Ayako Sanui, Kohei Miyata, Sung Ouk Nam, Satoshi Fukagawa, Takahiro Katsuta, Miyako Maehara, Haruhiko Kondo, Daisuke Miyahara, Kyoko Shirota, Toshiyuki Yoshizato, Masahide Kuroki, Hiroaki Nishikawa, Keijiro Saku, Yoshio Tsuboi, Kenji Ishitsuka, Yasushi Takamatsu, Kazuo Tamura, Akira Matsunaga, Toru Hachisuga, Shinsuke Nishino, Takashi Odawara, Kazuhiro Maeda, Sadao Manabe, Toyokazu Ishikawa, Yoshinobu Okuno, Minako Ohishi, Tomoya Hikita, Hiroto Mizushima, Ryo Iwamoto, Eisuke Mekada
BACKGROUND: BK-UM (CRM197) is a mutant form of diphtheria toxin and a specific inhibitor of heparin-binding epidermal growth factor-like growth factor (HB-EGF). We assessed the safety, pharmacokinetics, recommended dose, and efficacy of BK-UM in patients with recurrent ovarian cancer (OC) or peritoneal cancer (PC), and measured HB-EGF levels in serum and abdominal fluid after BK-UM administration. METHODS: Eleven patients with advanced or recurrent OC or PC were enrolled and treated with BK-UM via the intraperitoneal route...
January 31, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28132045/the-role-of-t-regulatory-and-th17-cells-in-the-pathogenesis-of-rheumatoid-arthritis-review
#5
N Kikodze, I Pantsulaia, T Chikovani
Chronic inflammation of joints of autoimmune origin - rheumatoid arthritis - develops due to deplorable coincidence of genetic, immune and environmental factors. Th17 cells are considered as the main effector cells in the pathogenesis of rheumatoid arthritis. Analysis of many reports clarify positive correlation between the frequencies of circulating Th17 cells, serum levels of IL-17A and IL-23, synovial IL-17 and disease activity. Autoreactive Th clone response is regulated by the certain population of suppressor cells - T regulatory cells (Tregs)...
December 2016: Georgian Medical News
https://www.readbyqxmd.com/read/28117479/the-role-of-physical-exercise-in-obstructive-sleep-apnea
#6
Flávio Maciel Dias de Andrade, Rodrigo Pinto Pedrosa
Obstructive sleep apnea (OSA) is a common clinical condition, with a variable and underestimated prevalence. OSA is the main condition associated with secondary systemic arterial hypertension, as well as with atrial fibrillation, stroke, and coronary artery disease, greatly increasing cardiovascular morbidity and mortality. Treatment with continuous positive airway pressure is not tolerated by all OSA patients and is often not suitable in cases of mild OSA. Hence, alternative methods to treat OSA and its cardiovascular consequences are needed...
November 2016: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28112481/the-effects-of-body-weight-status-on-orthostatic-intolerance-and-predisposition-to-noncardiac-syncope
#7
REVIEW
G A Christou, D N Kiortsis
Orthostatic intolerance (OI) is frequently the mechanism underlying the occurrence of noncardiac syncope (NCS) and is associated with substantial risk for injury. Body weight status appears to be a modifier of orthostatic responses and possibly influences the propensity to NCS. The majority of cross-sectional studies have found that the lower the body mass index (BMI) the greater the predisposition to OI is, accompanied with both down-regulation of sympathetic nervous system activity and up-regulation of parasympathetic nervous system activity...
January 23, 2017: Obesity Reviews: An Official Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28107457/novel-analysis-of-immune-cells-from-nasal-microbiopsy-demonstrates-reliable-reproducible-data-for-immune-populations-and-superior-cytokine-detection-compared-to-nasal-wash
#8
Simon P Jochems, Katherine Piddock, Jamie Rylance, Hugh Adler, Beatriz F Carniel, Andrea Collins, Jenna F Gritzfeld, Carole Hancock, Helen Hill, Jesus Reiné, Alexandra Seddon, Carla Solórzano, Syba Sunny, Ashleigh Trimble, Angela D Wright, Seher Zaidi, Stephen B Gordon, Daniela M Ferreira
The morbidity and mortality related to respiratory tract diseases is enormous, with hundreds of millions of individuals afflicted and four million people dying each year. Understanding the immunological processes in the mucosa that govern outcome following pathogenic encounter could lead to novel therapies. There is a need to study responses at mucosal surfaces in humans for two reasons: (i) Immunological findings in mice, or other animals, often fail to translate to humans. (ii) Compartmentalization of the immune system dictates a need to study sites where pathogens reside...
2017: PloS One
https://www.readbyqxmd.com/read/28100167/conserved-gene-expression-in-sperm-reservoirs-between-birds-and-mammals-in-response-to-mating
#9
Mohammad Atikuzzaman, Manuel Alvarez-Rodriguez, Alejandro Vicente Carrillo, Martin Johnsson, Dominic Wright, Heriberto Rodriguez-Martinez
BACKGROUND: Spermatozoa are stored in the oviductal functional sperm reservoir in animals with internal fertilization, including zoologically distant classes such as pigs or poultry. They are held fertile in the reservoir for times ranging from a couple of days (in pigs), to several weeks (in chickens), before they are gradually released to fertilize the newly ovulated eggs. It is currently unknown whether females from these species share conserved mechanisms to tolerate such a lengthy presence of immunologically-foreign spermatozoa...
January 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28063043/subcutaneous-and-sublingual-immunotherapy-in-a-mouse-model-of-allergic-asthma
#10
Laura Hesse, Martijn C Nawijn
Allergic asthma, caused by inhaled allergens such as house dust mite or grass pollen, is characterized by reversible airway obstruction, associated with an eosinophilic inflammation of the airways, as well as airway hyper responsiveness and remodeling. The inhaled allergens trigger a type-2 inflammatory response with involvement of innate lymphoid cells (ILC2) and Th2 cells, resulting in high production of immunoglobulin E (IgE) antibodies. Consequently, renewed allergen exposure results in a classic allergic response with a distinct early and late phase, both resulting in bronchoconstriction and shortness of breath...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27931077/antibiotics-for-the-neurological-complications-of-lyme-disease
#11
REVIEW
Diego Cadavid, Paul G Auwaerter, Jeffrey Rumbaugh, Harald Gelderblom
BACKGROUND: Various central nervous system-penetrant antibiotics are bactericidal in vitro and in vivo against the causative agent of Lyme neuroborreliosis (LNB), Borrelia burgdorferi. These antibiotics are routinely used clinically to treat LNB, but their relative efficacy is not clear. OBJECTIVES: To assess the effects of antibiotics for the treatment of LNB. SEARCH METHODS: On 25 October 2016 we searched the Cochrane Neuromuscular Specialised Register, the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, and Embase...
8, 2016: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/27928026/azd3759-a-bbb-penetrating-egfr-inhibitor-for-the-treatment-of-egfr-mutant-nsclc-with-cns-metastases
#12
Zhenfan Yang, Qiuli Guo, Yingchun Wang, Kan Chen, Lin Zhang, Ziqiang Cheng, Yanping Xu, Xiaolu Yin, Yu Bai, Sarit Rabbie, Dong-Wan Kim, Myung-Ju Ahn, James Chih-Hsin Yang, Xiaolin Zhang
Non-small-cell lung cancer patients with activating mutations in epidermal growth factor receptor (EGFR) respond to EGFR tyrosine kinase inhibitor (TKI) treatment. Nevertheless, patients often develop central nervous system (CNS) metastases during treatment, even when their extracranial tumors are still under control. In the absence of effective options, much higher doses of EGFR TKIs have been attempted clinically, with the goal of achieving high enough drug concentrations within the CNS. Although limited tumor responses have been observed with this approach, the toxicities outside the CNS have been too high to tolerate...
December 7, 2016: Science Translational Medicine
https://www.readbyqxmd.com/read/27925844/a-two-dose-heterologous-prime-boost-vaccine-regimen-eliciting-sustained-immune-responses-to-ebola-zaire-could-support-a-preventive-strategy-for-future-outbreaks
#13
Georgi Shukarev, Benoit Callendret, Kerstin Luhn, Macaya Douoguih
The consequences of the 2013-16 Ebola Zaire virus disease epidemic in West Africa were grave. The economies, healthcare systems and communities of Guinea, Sierra Leone and Liberia were devastated by over 18 months of active Ebola virus transmission, followed by sporadic resurgences potentially related to sexual transmission by survivors with viral persistence in body fluids following recovery. The need to develop and implement strategies to prevent and mitigate future outbreaks is now beyond dispute. The potential for unpredictable outbreaks of indeterminate duration, and control challenges posed by the possibility of sporadic re-emergence, mean that implementation of an effective vaccination program for outbreak containment necessitates a vaccine providing durable immunity...
December 7, 2016: Human Vaccines & Immunotherapeutics
https://www.readbyqxmd.com/read/27919757/dietary-administration-of-bacillus-subtilis-hainup40-enhances-growth-digestive-enzyme-activities-innate-immune-responses-and-disease-resistance-of-tilapia-oreochromis-niloticus
#14
Haitian Liu, Shifeng Wang, Yan Cai, Xiaohui Guo, Zhenjie Cao, Yongzheng Zhang, Shubin Liu, Wei Yuan, Weiwei Zhu, Yu Zheng, Zhenyu Xie, Weiliang Guo, Yongcan Zhou
The probiotic properties of Bacillus subtilis HAINUP40 isolated from the aquatic environment, and the effects of dietary administration of B. subtilis HAINUP40 on the growth performance, intestinal probiotic recovery, digestive enzyme activities, innate immunity and disease resistance of tilapia (Oreochromis niloticus) were evaluated. The probiotic properties investigated include tolerance to simulated gastrointestinal stress, auto-aggregation, cell surface hydrophobicity and extracellular enzyme production...
December 2, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27917173/live-imaging-of-immune-responses-in-experimental-models-of-multiple-sclerosis
#15
REVIEW
Barbara Rossi, Gabriela Constantin
Experimental autoimmune encephalomyelitis (EAE) is the most common animal model of multiple sclerosis (MS), a chronic inflammatory autoimmune disease of the central nervous system (CNS) characterized by multifocal perivascular infiltrates that predominantly comprise lymphocytes and macrophages. During EAE, autoreactive T cells first become active in the secondary lymphoid organs upon contact with antigen-presenting cells (APCs), and then gain access to CNS parenchyma, through a compromised blood-brain barrier, subsequently inducing inflammation and demyelination...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27906052/antibody-responses-to-de-novo-identified-citrullinated-fibrinogen-peptides-in-rheumatoid-arthritis-and-visualization-of-the-corresponding-b-cells
#16
Vijay Joshua, Loes Schobers, Philip J Titcombe, Lena Israelsson, Johan Rönnelid, Monika Hansson, Anca I Catrina, Ger J M Pruijn, Vivianne Malmström
BACKGROUND: Antibodies against citrullinated proteins (ACPA) are common in patients with rheumatoid arthritis (RA). ACPA can appear before disease onset and target many self-antigens. Citrullinated fibrin/fibrinogen represents a classical ACPA target antigen, and mass spectrometry of RA synovial fluid reveals elevated citrullinated (cit) fibrinogen (Fib) peptides compared to non-RA controls. We investigated the extent to which these less-studied peptides represent autoantibody targets and sought to visualize the corresponding cit-Fib-reactive B cells in RA patients...
December 1, 2016: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/27888933/review-on-modeling-heat-transfer-and-thermoregulatory-responses-in-human-body
#17
REVIEW
Ming Fu, Wenguo Weng, Weiwang Chen, Na Luo
Several mathematical models of human thermoregulation have been developed, contributing to a deep understanding of thermal responses in different thermal conditions and applications. In these models, the human body is represented by two interacting systems of thermoregulation: the controlling active system and the controlled passive system. This paper reviews the recent research of human thermoregulation models. The accuracy and scope of the thermal models are improved, for the consideration of individual differences, integration to clothing models, exposure to cold and hot conditions, and the changes of physiological responses for the elders...
December 2016: Journal of Thermal Biology
https://www.readbyqxmd.com/read/27888833/interaction-of-rat-alveolar-macrophages-with-dental-composite-dust
#18
K L Van Landuyt, S M Cokic, C Asbach, P Hoet, L Godderis, F X Reichl, B Van Meerbeek, A Vennemann, M Wiemann
BACKGROUND: Dental composites have become the standard filling material to restore teeth, but during the placement of these restorations, high amounts of respirable composite dust (<5 μm) including many nano-sized particles may be released in the breathing zone of the patient and dental operator. Here we tested the respirable fraction of several composite particles for their cytotoxic effect using an alveolar macrophage model system. ​METHODS: Composite dust was generated following a clinical protocol, and the dust particles were collected under sterile circumstances...
November 26, 2016: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/27881573/intestinal-na-k-2cl-cotransporter-2-plays-a-crucial-role-in-hyperosmotic-transitions-of-a-euryhaline-teleost
#19
Andrew J Esbaugh, Brett Cutler
Euryhaline fishes, such as the red drum (Sciaenops ocellatus), must quickly transition between hyperosmotic and hypoosmotic physiological strategies. When freshwater individuals transition to seawater they are exposed to increased diffusive water loss and ion gain. To maintain osmoregulatory balance these animals must drink and absorb seawater through the intestine, followed by ion excretion at the gills. The ability of fishes to transition between strategies can limit the magnitude of osmotic shock that can be tolerated...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27869558/polynitroxylated-pegylated-hemoglobin-a-novel-small-volume-therapeutic-for-traumatic-brain-injury-resuscitation-comparison-to-whole-blood-and-dose-response-evaluation
#20
Erik C Brockman, Travis C Jackson, C Edward Dixon, Hülya Bayɪr, Robert S B Clark, Vincent Vagni, Keri Feldman, Catherine Byrd, Li Ma, Carleton Hsia, Patrick M Kochanek
Resuscitation with polynitroxylated pegylated hemoglobin (PNPH), a pegylated bovine hemoglobin decorated with nitroxides, eliminated the need for fluid administration, reduced intracranial pressure (ICP) and brain edema, and produced neuroprotection in vitro and in vivo versus Lactated Ringer's solution (LR) in experimental traumatic brain injury (TBI) plus hemorrhagic shock (HS). We hypothesized that resuscitation with PNPH would improve acute physiology versus whole blood after TBI+HS and would be safe and effective across a wide dosage range...
January 13, 2017: Journal of Neurotrauma
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