keyword
MENU ▼
Read by QxMD icon Read
search

Interactions

keyword
https://www.readbyqxmd.com/read/28743172/modelling-nutritional-mutualisms-challenges-and-opportunities-for-data-integration
#1
REVIEW
Teresa J Clark, Colleen A Friel, Emily Grman, Yair Shachar-Hill, Maren L Friesen
Nutritional mutualisms are ancient, widespread, and profoundly influential in biological communities and ecosystems. Although much is known about these interactions, comprehensive answers to fundamental questions, such as how resource availability and structured interactions influence mutualism persistence, are still lacking. Mathematical modelling of nutritional mutualisms has great potential to facilitate the search for comprehensive answers to these and other fundamental questions by connecting the physiological and genomic underpinnings of mutualisms with ecological and evolutionary processes...
July 25, 2017: Ecology Letters
https://www.readbyqxmd.com/read/28743147/-development-of-anaesthesia-related-mortality-and-impact-on-perioperative-outcome
#2
Peter Rosenberger, Berthold Drexler
Achievements in anaesthesiology form the basis for the tremendous development of surgical therapy. Reliable monitoring technology, which is scrutinized on a regular basis using checklists, is allowing anaesthesia at the borders of physiology. During the last decades, anaesthesia-related mortality has been decreasing considerably. Well-trained anaesthesiology staff, who considers patient- and procedure-specific risks in anaesthetic management, is of major importance. Furthermore, postoperative care in specialised units and intensive care wards is a key factor of improved patient outcome after surgery...
July 2017: Anästhesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie: AINS
https://www.readbyqxmd.com/read/28743126/frontal-cortex-and-hippocampal-%C3%AE-secretase-activating-protein-levels-in-prodromal-alzheimer-disease
#3
Sylvia E Perez, Muhammad Nadeem, Michael H Malek-Ahmadi, Bin He, Elliott J Mufson
BACKGROUND: β-Amyloid (Aβ) is the product of concerted cleavage of the amyloid precursor protein (APP) by β- and γ-secretases. However, the molecular mechanisms that regulate this process are not well understood. Recently, evidence was reported that γ-secretase activating protein (GSAP, 16 kDa), derived from a larger precursor protein (98 kDa), plays a role in Aβ metabolism through a mechanism involving its interaction with both γ-secretase and APP. However, a detailed evaluation of GSAP protein levels and their association with clinical and neuropathological variables are lacking during the clinical progression of Alzheimer disease (AD)...
July 26, 2017: Neuro-degenerative Diseases
https://www.readbyqxmd.com/read/28743105/statistical-interactions-from-a-growth-curve-perspective
#4
Sean M Devlin, Jaya M Satagopan
Logistic regression is widely used to evaluate the association between risk factors and a binary outcome. The logistic curve is symmetric around its point of inflection. Alternative families of curves, such as the additive Gompertz or Guerrero-Johnson models, have been proposed in various scenarios due to their asymmetry: disease risk may initially increase rapidly and be followed by a longer period where the rate of growth slowly decreases. When modeling binary outcomes in relation to risk factors, an additive logistic model may not provide a good fit to the data...
July 26, 2017: Human Heredity
https://www.readbyqxmd.com/read/28743089/understanding-the-interaction-of-concanavalin-a-with-mannosyl-glycoliposomes-a-surface-plasmon-resonance-and-fluorescence-study
#5
Catalina Sandoval-Altamirano, Susana A Sanchez, Nancy F Ferreyra, German Gunther
The specificity of carbohydrate-protein interaction is a key factor in many biological processes and it is the foundation of technologies using glycoliposomes in drug delivery. The incorporation of glycolipids in vesicles is expected to increase their specificity toward particular targets such as lectins; however, the degree of exposure of the carbohydrate moiety at the liposome surface is a crucial parameter to be considered in the interaction. Herein we report the synthesis of mannose derivatives with one or two hydrophobic chains of different length, designed with the purpose of modifying the degree of exposure of the mannose when they were incorporated into liposomes...
July 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28743088/chitosan-derived-co-spheroids-of-neural-stem-cells-and-mesenchymal-stem-cells-for-neural-regeneration
#6
Hao-Wei Han, Shan-Hui Hsu
Chitosan has been considered as candidate biomaterials for neural applications. The effective treatment of neurodegeneration or injury to the central nervous system (CNS) is still in lack nowadays. Adult neural stem cells (NSCs) represents a promising cell source to treat the CNS diseases but they are limited in number. Here, we developed the core-shell spheroids of NSCs (shell) and mesenchymal stem cells (MSCs, core) by co-culturing cells on the chitosan surface. The NSCs in chitosan derived co-spheroids displayed a higher survival rate than those in NSC homo-spheroids...
July 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28743081/mycobacterium-tuberculosis-ppe44-rv2770c-is-involved-in-response-to-multiple-stresses-and-promotes-the-macrophage-expression-of-il-12-p40-and-il-6-via-the-p38-erk-and-nf-%C3%AE%C2%BAb-signaling-axis
#7
Zhaoxiao Yu, Chenhui Zhang, Mingliang Zhou, Qiming Li, Hui Li, Wei Duan, Xue Li, Yonghong Feng, Jianping Xie
Tuberculosis (TB), caused by Mycobacterium tuberculosis, remains a formidable threat to global public health. The successful intracellular persistence of M. tuberculosis significantly contributes to the intractability of tuberculosis. Proline-glutamic acid (PE) and proline-proline-glutamic acid (PPE) are mycobacterial exclusive protein families that widely reported to be involved in the bacterial virulence, physiology and interaction with host. Rv2770c (PPE44), a predicted virulence factor, was up-regulated upon the infected guinea pig lungs...
July 22, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28743072/molecular-modeling-and-molecular-dynamics-simulation-study-of-archaeal-leucyl-trna-synthetase-in-complex-with-different-mischarged-trna-in-editing-conformation
#8
A V Rayevsky, M Sharifi, M A Tukalo
Aminoacyl-tRNA synthetases (aaRSs) play important roles in maintaining the accuracy of protein synthesis. Some aaRSs accomplish this via editing mechanisms, among which leucyl-tRNA synthetase (LeuRS) edits non-cognate amino acid norvaline mainly by post-transfer editing. However, the molecular basis for this pathway for eukaryotic and archaeal LeuRS remain unclear. In this study, a complex of archaeal P. horikoshii LeuRS (PhLeuRS) with misacylated tRNA(Leu) was modeled wherever tRNA's acceptor stem was oriented directly into the editing site...
July 18, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28743070/tracking-binding-modes-of-1-2-4-trisubstituted-imidazolinone-p38-map-kinase-and-erk-2-inhibitors
#9
Shashidhar N Rao
Putative binding modes of recently reported p38 MAP Kinase and ERK-2 inhibitors containing 1,2,4-tri-substituted imidazolinone have been investigated using molecular docking methods In the case of p38 MAP Kinase, X-ray structures with both DFG-in and DFG-out conformations of the activation loop have been employed for docking studies. The present investigations demonstrate that the DFG-out conformation of the activation loop in p38 MAP Kinase accommodates the 1,2,4-tri-substituted imidazolinones with greater computed binding affinities than the alternative DFG-in conformation...
July 4, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28743059/altered-connectivity-within-and-between-the-default-mode-central-executive-and-salience-networks-in-obsessive-compulsive-disorder
#10
Jie Fan, Mingtian Zhong, Jun Gan, Wanting Liu, Chaoyang Niu, Haiyan Liao, Hongchun Zhang, Jinyao Yi, Raymond C K Chan, Changlian Tan, Xiongzhao Zhu
BACKGROUND: Default mode network (DMN), central executive network (CEN) and salience network (SN) are the three most important intrinsic networks of the human brain. Recent studies emphasized the importance of the "triple-network model" which illustrated the interactions within and between DMN, CEN and SN in the pathophysiology of psychiatric disorders. However, previous studies of obsessive-compulsive disorder (OCD) just explored the altered connectivity within these networks while neglected the coupling between them...
July 20, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/28743041/prospects-for-engineering-and-improvement-of-cross-protective-virus-strains
#11
REVIEW
Heiko Ziebell, Robin MacDiarmid
Mild strain cross-protection is currently an important method for the production of high quality plant products; despite challenge from severe virus isolates the initial protecting strain precludes symptom development. The mechanism of cross-protection is not yet resolved as RNA silencing does not sufficiently explain the phenomenon. Six requirements have been put forward to ensure long-lasting protection. We propose two additional requirements for effective and durable mild strain cross-protection; mild strains based on knowledge of the mechanism and consideration of impacts to consumers...
July 22, 2017: Current Opinion in Virology
https://www.readbyqxmd.com/read/28743023/principles-of-transgenerational-small-rna-inheritance-in-caenorhabditis-elegans
#12
REVIEW
Oded Rechavi, Itamar Lev
Examples of transgenerational inheritance of environmental responses are rapidly accumulating. In Caenorhabditis elegans nematodes, such heritable information transmits across generations in the form of RNA-dependent RNA polymerase-amplified small RNAs. Regulatory small RNAs enable sequence-specific gene regulation, and unlike chromatin modifications, can move between tissues, and escape from immediate germline reprogramming. In this review, we discuss the path that small RNAs take from the soma to the germline, and elaborate on the mechanisms that maintain or erase parental small RNA responses after a specific number of generations...
July 24, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28742972/stimuli-responsive-directional-vesicular-assembly-with-tunable-surface-functionality-and-impact-on-enzyme-inhibition
#13
Amrita Sikder, Debes Ray, Vinod Kumar Aswal, Suhrit Ghosh
The article describes self-assembly of a series of unsymmetrical bola-shape π-amphiphiles (NDI-1, NDI-1a, NDI-2, NDI-3 and NDI-4) consisting of a hydrophobic naphthalene-diimide (NDI) chromophore attached with a non-ionic hydrophilic wedge and an anionic head group in the two opposite arms of the central NDI. By design only a single hydrazide group is linked either on the ionic or non-ionic arm of the NDI. NDI-1 and NDI-1a are regioisomers differing only in the location of the hydrazide group, placed in the non-ionic or ionic arm, respectively...
July 25, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28742970/interaction-behaviors-of-fibrinopeptide-a-and-graphene-with-different-functional-groups-a-molecular-dynamics-simulation-approach
#14
Menghao Wang, Qun Wang, Xiong Lu, Ke Feng Wang, Liming Fang, Fuzeng Ren, Guoming Lu, Hongping Zhang
Graphene as a 2-dimentional material has been widely used in the field of biomedical applications. In this study, molecular dynamics simulations are carried out on the fibrinopeptide-A and graphene surfaces with N and O modifications. A new set of parameters for CHARMM force field are developed to describe the behaviors of the surfaces. Our results indicate that the existence of most oxygen and nitrogen groups may enhance the interaction between the surfaces and the peptide, whereas the substitutional nitrogen on the graphene surface does not make a big difference...
July 25, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28742968/enhancing-the-elasticity-of-ultrathin-single-wall-carbon-nanotube-films-with-colloidal-nanocrystals
#15
Meshal Alzaid, Joseph Roth, Yuezhou Wang, Eid Almutairi, Samuel L Brown, Traian Dumitrica, Erik K Hobbie
Thin bilayers of contrasting nanomaterials are ubiquitous in solution-processed electronic devices and have potential relevance to a number of applications in flexible electronics. Motivated by recent mesoscopic simulations demonstrating synergistic mechanical interactions between thin films of single-wall carbon nanotubes (SWCNTs) and spherical nanocrystal (NC) inclusions, we use a thin-film wrinkling approach to query the compressive mechanics of hybrid nanotube/nanocrystal coatings adhered to soft polymer substrates...
July 25, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28742966/the-decisive-role-of-hydrophobicity-on-the-effect-of-alkylammonium-chlorides-on-protein-stability-a-terahertz-spectroscopic-finding
#16
Debasish Das Mahanta, Rajib Kumar Mitra, Nirnay Samanta
Many biologically important processes involve a subtle interplay between Columbic and hydrophobic interactions among molecular groups with water. A comprehensive understanding of such processes, specially while occurring simultaneously in the same molecule is of practical importance. In this contribution we report the ultrafast (sub-ps to ps) collective hydrogen bond dynamics of water in the extended hydration layers in a series of alkylammonium chloride salts using THz time domain spectroscopic (TTDS) technique (0...
July 25, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28742962/characterization-of-intramolecular-interactions-of-cytochrome-c-using-hydrogen-deuterium-exchange-trapped-ion-mobility-spectrometry-mass-spectrometry-and-molecular-dynamics
#17
Juan Camilo Molano-Arevalo, Kevin Jeanne Dit Fouque, Khoa N Pham, Jaroslava Miksovska, Mark E Ridgeway, Melvin A Park, Francisco Fernandez-Lima
Globular proteins, such as cytochrome c (cyt c), display an organized native conformation, maintained by a hydrogen bond interaction network. In the present work, the structural interrogation of kinetically trapped intermediates of cyt c was performed by correlating the ion-neutral collision cross section (CCS) and charge state with the starting solution conditions and time after desolvation using collision induced activation (CIA), time resolved hydrogen/deuterium back exchange (HDX) and trapped ion mobility spectrometry - mass spectrometry (TIMS-MS)...
July 25, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28742959/long-range-corrections-for-inhomogeneous-simulations-of-mie-n-m-potential
#18
Jiri Janecek, Olivier Said-Aizpuru, Patrice Paricaud
The long range correction scheme for dispersion interactions in inhomogeneous simulations is generalized to Mie n - m potential. The influence of the cut-off distance and lateral dimensions of the simulation box are studied for 8 - 6 , 12 - 6 and 20 - 6 Mie fluids at two different temperatures (close and far from the critical point). For sufficiently large systems (2400 particles, Rc = 3.5σ) equilibrium properties are simulated over the whole vapour - liquid coexistence using the inhomogeneous Monte Carlo simulations and the results are compared with the Gibbs Ensemble technique and with the square gradient theory combined with the SAFT Mie equation of state...
July 25, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28742955/bayesian-one-step-ipd-network-meta-analysis-of-time-to-event-data-using-royston-parmar-models
#19
Suzanne C Freeman, James R Carpenter
Network meta-analysis (NMA) combines direct and indirect evidence from trials to calculate and rank treatment estimates. While modelling approaches for continuous and binary outcomes are relatively well developed, less work has been done with time-to-event outcomes. Such outcomes are usually analysed using Cox proportional hazard (PH) models. However, in oncology with longer follow-up time, and time-dependent effects of targeted treatments, this may no longer be appropriate. Network meta-analysis conducted in the Bayesian setting has been increasing in popularity...
July 25, 2017: Research Synthesis Methods
https://www.readbyqxmd.com/read/28742948/microbial-metabolites-and-graft-versus-host-disease
#20
Mary Riwes, Pavan Reddy
The health of mammals is a reflection of the diversity and composition of the intestinal microbiota. Alterations in the composition and functions of the intestinal microbiota have been implicated in multiple disease processes. The impact of the microbiota in health and disease is in part a function of the nutrient processing and release of metabolites. Recent studies have uncovered a major role for microbial metabolites in the function of the host immune system by which they influence disease processes such as acute graft versus host disease (GVHD), which is the main complication of allogeneic hematopoietic cell transplantation (allo-HCT)...
July 25, 2017: American Journal of Transplantation
keyword
keyword
66751
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"