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https://www.readbyqxmd.com/read/28333068/effects-of-reactive-oxygen-species-on-tubular-transport-along-the-nephron
#1
REVIEW
Agustin Gonzalez-Vicente, Jeffrey L Garvin
Reactive oxygen species (ROS) are oxygen-containing molecules naturally occurring in both inorganic and biological chemical systems. Due to their high reactivity and potentially damaging effects to biomolecules, cells express a battery of enzymes to rapidly metabolize them to innocuous intermediaries. Initially, ROS were considered by biologists as dangerous byproducts of respiration capable of causing oxidative stress, a condition in which overproduction of ROS leads to a reduction in protective molecules and enzymes and consequent damage to lipids, proteins, and DNA...
March 23, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28325059/lysophospholipids-and-their-receptors-serve-as-conditional-damps-and-damp-receptors-in-tissue-oxidative-and-inflammatory-injury
#2
Ying Shao, Gayani Nanayakkara, Jiali Cheng, Ramon Cueto, William Y Yang, Joon-Young Park, Hong Wang, Xiaofeng Yang
SIGNIFICANCE: We proposed LPLs and LPL-GPCRs as conditional DAMPs and conditional DAMP receptors as a paradigm shift to the widely accepted classical DAMP and DAMP receptor model. Recent Advances: The aberrant levels of LPLs and GPCRs activate pro-inflammatory signal transduction pathways, trigger innate immune response and lead to tissue oxidative and inflammatory injury. CRITICAL ISSUES: Classical DAMPs model specify only the endogenous metabolites that are released from damaged/ dying cells as DAMPs but fails to identify elevated endogenous metabolites secreted from viable/ live cells during pathologies as DAMPs...
March 22, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28319813/the-clinical-implications-of-legalizing-marijuana-are-physician-and-non-physician-providers-prepared
#3
Elizabeth Brooks, Doris C Gundersen, Erin Flynn, Ashley Brooks-Russell, Sheana Bull
INTRODUCTION: Passage of voter-driven marijuana reform laws signals a shift in public attitudes for marijuana use. For providers, legalization may necessitate practice modifications, particularly regarding patient-provider conversations about use and risk. We examined healthcare providers' knowledge of marijuana laws and health implications, professional practice behaviors, and attitudes about training. MATERIALS AND METHODS: We surveyed 114 Colorado-based providers who care for children, adolescents, pregnant and breastfeeding women using a Venue-Day-Time survey methodology throughout Colorado...
March 10, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28318502/efficacy-of-virtual-reality-in-pedestrian-safety-research
#4
Shuchisnigdha Deb, Daniel W Carruth, Richard Sween, Lesley Strawderman, Teena M Garrison
Advances in virtual reality technology present new opportunities for human factors research in areas that are dangerous, difficult, or expensive to study in the real world. The authors developed a new pedestrian simulator using the HTC Vive head mounted display and Unity software. Pedestrian head position and orientation were tracked as participants attempted to safely cross a virtual signalized intersection (5.5 m). In 10% of 60 trials, a vehicle violated the traffic signal and in 10.84% of these trials, a collision between the vehicle and the pedestrian was observed...
March 16, 2017: Applied Ergonomics
https://www.readbyqxmd.com/read/28306512/an-inflammatory-perspective-on-necroptosis
#5
REVIEW
Conor J Kearney, Seamus J Martin
Necroptosis (programmed necrosis) occurs in response to TNF, Fas, or TRAIL, as well as certain TLR ligands, when caspase activity required for apoptosis is blocked. Necroptosis is typically considered a highly pro-inflammatory mode of cell death, due to release of intracellular "danger signals" that promote inflammation. However, because most pro-necroptotic stimuli are intrinsically highly pro-inflammatory-due to their ability to initiate the synthesis of numerous cytokines and chemokines-the inflammatory consequences of necroptosis are complex...
March 16, 2017: Molecular Cell
https://www.readbyqxmd.com/read/28303964/discrete-call-types-referring-to-predation-risk-enhance-the-efficiency-of-the-meerkat-sentinel-system
#6
R Rauber, M B Manser
Sentinel behaviour, a form of coordinated vigilance, occurs in a limited range of species, mostly in cooperative breeders. In some species sentinels confirm their presence vocally by giving a single sentinel call type, whereby the rate and subtle acoustic changes provide graded information on the variation of perceived predation risk. In contrast, meerkat (Suricata suricatta) sentinels produce six different sentinel call types. Here we show that manipulation of perception of danger has different effects on the likelihood of emitting these different call types, and that these call types affect foraging individuals differently...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28302491/bile-acids-and-their-receptors-during-liver-regeneration-dangerous-protectors
#7
REVIEW
Merlen Grégory, Ursic-Bedoya José, Jourdainne Valeska, Kahale Nicolas, Mathilde Glenisson, Doignon Isabelle, Dominique Rainteau, Thierry Tordjmann
Tissue repair is orchestrated by a finely tuned interplay between processes of regeneration, inflammation and cell protection, allowing organisms to restore their integrity after partial loss of cells or organs. An important, although largely unexplored feature is that after injury and during liver repair, liver functions have to be maintained to fulfill the peripheral demand. This is particularly critical for bile secretion, which has to be finely modulated in order to preserve liver parenchyma from bile-induced injury...
March 13, 2017: Molecular Aspects of Medicine
https://www.readbyqxmd.com/read/28301362/analysis-of-surfing-injuries-presenting-in-the-acute-trauma-setting
#8
Kevin T Jubbal, Charlie Chen, Todd Costantini, Fernando Herrera, Marek Dobke, Ahmed Suliman
BACKGROUND AND PURPOSE: Surfing is a rapidly growing major worldwide sport; however, little is understood regarding severe injuries and resulting hospital admissions. This study explores surfing-related injuries in the major surfing hub of San Diego presenting in the acute trauma setting. The purpose of this study is to address the void of information regarding severe surfing injuries in the trauma setting, including injury patterns, associated hospitalization course, and risk factors...
March 16, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28299196/advances-in-the-understanding-of-mitochondrial-dna-as-a-pathogenic-factor-in-inflammatory-diseases
#9
REVIEW
Ray K Boyapati, Arina Tamborska, David A Dorward, Gwo-Tzer Ho
Mitochondrial DNA (mtDNA) has many similarities with bacterial DNA because of their shared common ancestry. Increasing evidence demonstrates mtDNA to be a potent danger signal that is recognised by the innate immune system and can directly modulate the inflammatory response. In humans, elevated circulating mtDNA is found in conditions with significant tissue injury such as trauma and sepsis and increasingly in chronic organ-specific and systemic illnesses such as steatohepatitis and systemic lupus erythematosus...
2017: F1000Research
https://www.readbyqxmd.com/read/28293722/pattern-of-cardiotoxin-induced-muscle-remodeling-in-distinct-tlr-4-deficient-mouse-strains
#10
Eustáquio Luiz Paiva-Oliveira, Rafael Ferreira da Silva, Maria Bellio, Thereza Quirico-Santos, Jussara Lagrota-Candido
Tissue damage triggers innate immune response mediated by Toll-like receptor 4 (TLR) that recognizes endogenous host danger molecules associated with cell death and tissue inflammation, although the precise role of TLR-4 signaling in muscle tissue repair is still uncertain. Previously, we observed that TLR-4 exerted a protective effect preventing excessive muscular damage induced by Bothrops jararacussu crude venom. This study aimed to evaluate the involvement of TLR-4 at early stages of muscular tissue remodeling in distinct mouse strains after injection of purified snake venom...
March 14, 2017: Histochemistry and Cell Biology
https://www.readbyqxmd.com/read/28292430/dangerous-liaisons-deviant-endothelium-notches-toward-tumor-metastasis
#11
Peipei Guo, Shahin Rafii
In this issue of Cancer Cell, Wieland et al. uncover a feedback loop in which tumor cells, by augmenting Notch signaling, provoke a senescent and pro-inflammatory state in endothelial cells, promoting neutrophil infiltration, tumor cell adhesion, and metastasis. Interfering with this Notch-dependent crosstalk may be a therapeutic approach to block metastasis.
March 13, 2017: Cancer Cell
https://www.readbyqxmd.com/read/28272553/structure-activity-relationship-in-tlr4-mutations-atomistic-molecular-dynamics-simulations-and-residue-interaction-network-analysis
#12
Muhammad Ayaz Anwar, Sangdun Choi
Toll-like receptor 4 (TLR4), a vital innate immune receptor present on cell surfaces, initiates a signaling cascade during danger and bacterial intrusion. TLR4 needs to form a stable hexamer complex, which is necessary to dimerize the cytoplasmic domain. However, D299G and T399I polymorphism may abrogate the stability of the complex, leading to compromised TLR4 signaling. Crystallography provides valuable insights into the structural aspects of the TLR4 ectodomain; however, the dynamic behavior of polymorphic TLR4 is still unclear...
March 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28271611/nlrp3-inflammasome-activation-is-associated-with-proliferative-diabetic-retinopathy
#13
Sirpa Loukovaara, Niina Piippo, Kati Kinnunen, Maria Hytti, Kai Kaarniranta, Anu Kauppinen
PURPOSE: Innate immunity and dysregulation of inflammatory processes play a role in vascular diseases like atherosclerosis or diabetes. Nucleotide-binding domain and Leucine-rich repeat Receptor containing a Pyrin domain 3 (NLRP3) inflammasomes are pro-inflammatory signalling complexes that were found in 2002. In addition to pathogens and other extracellular threats, they can be activated by various endogenous danger signals. The purpose of this study was to find out whether NLRP3 activation occurs in patients with sight-threatening forms of diabetic retinopathy (DR)...
March 8, 2017: Acta Ophthalmologica
https://www.readbyqxmd.com/read/28271472/the-canonical-inflammasome-a-macromolecular-complex-driving-inflammation
#14
Tom P Monie
The inflammasome is a multi-molecular platform crucial to the induction of an inflammatory response to cellular danger. Recognition in the cytoplasm of endogenously and exogenously derived ligands initiates conformational change in sensor proteins, such as NLRP3, that permits the subsequent rapid recruitment of adaptor proteins, like ASC, and the resulting assembly of a large-scale inflammatory signalling platform. The assembly process is driven by sensor-sensor interactions as well as sensor-adaptor and adaptor-adaptor interactions...
2017: Sub-cellular Biochemistry
https://www.readbyqxmd.com/read/28271447/guards-at-the-gate-physiological-and-pathological-roles-of-tissue-resident-innate-lymphoid-cells-in-the-lung
#15
REVIEW
Hang Cheng, Chengyan Jin, Jing Wu, Shan Zhu, Yong-Jun Liu, Jingtao Chen
The lung is an important open organ and the primary site of respiration. Many life-threatening diseases develop in the lung, e.g., pneumonia, asthma, chronic obstructive pulmonary diseases (COPDs), pulmonary fibrosis, and lung cancer. In the lung, innate immunity serves as the frontline in both anti-irritant response and anti-tumor defense and is also critical for mucosal homeostasis; thus, it plays an important role in containing these pulmonary diseases. Innate lymphoid cells (ILCs), characterized by their strict tissue residence and distinct function in the mucosa, are attracting increased attention in innate immunity...
March 7, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28269053/deep-learning-framework-for-detection-of-hypoglycemic-episodes-in-children-with-type-1-diabetes
#16
Phyo Phyo San, Sai Ho Ling, Hung T Nguyen
Most Type 1 diabetes mellitus (T1DM) patients have hypoglycemia problem. Low blood glucose, also known as hypoglycemia, can be a dangerous and can result in unconsciousness, seizures and even death. In recent studies, heart rate (HR) and correct QT interval (QTc) of the electrocardiogram (ECG) signal are found as the most common physiological parameters to be effected from hypoglycemic reaction. In this paper, a state-of-the-art intelligent technology namely deep belief network (DBN) is developed as an intelligent diagnostics system to recognize the onset of hypoglycemia...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28268386/patient-specific-detection-of-ventricular-tachycardia-in-remote-continuous-health-devices
#17
Amit Juneja, Michael Marefat
Ventricular Tachycardia (VT) is a dangerous arrhythmic event which can lead to sudden cardiac death if not detected and taken care of in time. This work uses non-linear features derived from Recurrence Quantification Analysis (RQA) along with Kolmogorov complexity, by analyzing the ECG signals, to train a classifier which can predict VT prior to their onset in remote continuous health devices. Compressed ECG signal along with amplitude ranges extracted from the ECG signal are used as features to strengthen the classifier...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28267621/targeting-hepatic-macrophages-to-treat-liver-diseases
#18
REVIEW
Frank Tacke
Our view on liver macrophages in the context of health and disease has been reformed by the recognition of a remarkable heterogeneity of phagocytes in the liver. Liver macrophages consist of ontogenically distinct populations termed Kupffer cells and monocyte-derived macrophages. Kupffer cells are self-renewing, resident and principally non-migratory phagocytes, serving as sentinels for liver homeostasis. Liver injury triggers Kupffer cell activation, leading to inflammatory cytokine and chemokine release. This fosters the infiltration of monocytes into liver that give rise to large numbers of inflammatory monocyte-derived macrophages...
March 3, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28267552/safety-issues-and-updates-under-mr-environments
#19
REVIEW
Soo Jung Kim, Kyung Ah Kim
Magnetic resonance (MR) imaging is a useful imaging tool with superior soft tissue contrast for diagnostic evaluation. The MR environments poses unique risks to patients and employees differently from ionizing radiation exposure originated from computed tomography and plain x-ray films. The technology associated with MR system has evolved continuously since its introduction in the late 1970s. MR systems have advanced with static magnetic fields, faster and stronger gradient magnetic fields and more powerful radiofrequency transmission coils...
April 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28263976/nlrp1-promotes-tumor-growth-by-enhancing-inflammasome-activation-and-suppressing-apoptosis-in-metastatic-melanoma
#20
Z Zhai, W Liu, M Kaur, Y Luo, J Domenico, J M Samson, Y G Shellman, D A Norris, C A Dinarello, R A Spritz, M Fujita
Inflammasomes are mediators of inflammation, and constitutively activated NLRP3 inflammasomes have been linked to interleukin-1β (IL-1β)-mediated tumorigenesis in human melanoma. Whereas NLRP3 regulation of caspase-1 activation requires the adaptor protein ASC (apoptosis-associated speck-like protein containing a CARD (caspase recruitment domain)), caspase-1 activation by another danger-signaling sensor NLRP1 does not require ASC because NLRP1 contains a C-terminal CARD domain that facilitates direct caspase-1 activation via CARD-CARD interaction...
March 6, 2017: Oncogene
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