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Chemical communication

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https://www.readbyqxmd.com/read/28220342/icons-for-health-effects-of-cigarette-smoke-a-test-of-semiotic-type
#1
Allison J Lazard, Annie Schmidt, Huyen Vu, M Justin Byron, Ellen Peters, Marcella H Boynton, Noel T Brewer
We sought to identify icons to effectively communicate health harms of chemicals in cigarette smoke. Participants were a convenience sample of 701 U.S. adults. A within-subjects online experiment explored the effects of icon semiotic type: symbolic (arbitrary, most abstract), indexical, and iconic (representative, most concrete). Outcomes were perceived representation, affect toward smoking, elaboration, perceived severity, and perceived effectiveness. For not-easy-to-visualize harms of cancer and addiction, symbolic icons received the highest ratings (all p < ...
February 20, 2017: Journal of Behavioral Medicine
https://www.readbyqxmd.com/read/28220296/cross-species-communication-in-bacterial-world
#2
REVIEW
Sarangam Majumdar, Sukla Pal
Biofilms are the compact association of micro organisms and the communication processes in these biofilms are always a wonder. Electrical and chemical signaling mechanism are the key to understand the bacterial communication network. Quorum sensing so far has been able to explain the coordinated motion of bacteria through its chemical signaling mechanism. Bacteria residing within biofilm communities are trivial to communicate. But the recent observation in 2017 by Humphries et al. has revealed that the ion channels enabled electrical signaling mechanism can be as powerful as to attract the distant cells i...
February 20, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28216558/application-of-passive-sampling-to-characterise-the-fish-exometabolome
#3
Mark R Viant, Jessica Elphinstone Davis, Cathleen Duffy, Jasper Engel, Craig Stenton, Marion Sebire, Ioanna Katsiadaki
The endogenous metabolites excreted by organisms into their surrounding environment, termed the exometabolome, are important for many processes including chemical communication. In fish biology, such metabolites are also known to be informative markers of physiological status. While metabolomics is increasingly used to investigate the endogenous biochemistry of organisms, no non-targeted studies of the metabolic complexity of fish exometabolomes have been reported to date. In environmental chemistry, Chemcatcher(®) (Portsmouth, UK) passive samplers have been developed to sample for micro-pollutants in water...
February 14, 2017: Metabolites
https://www.readbyqxmd.com/read/28216119/does-previous-use-affect-litter-box-appeal-in-multi-cat-households
#4
J J Ellis, R T S McGowan, F Martin
It is commonly assumed that cats actively avoid eliminated materials (especially in multi-cat homes), suggesting regular litter box cleaning as the best defense against out-of-box elimination. The relationship between previous use and litter box appeal to familiar subsequent users is currently unknown. The purpose of this study was to investigate the relationship between previous litter box use and the identity of the previous user, type of elimination, odor, and presence of physical/visual obstructions in a multi-cat household scenario...
February 13, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/28211494/hepatocyte-secreted-extracellular-vesicles-modify-blood-metabolome-and-endothelial-function-by-an-arginase-dependent-mechanism
#5
Felix Royo, Laura Moreno, Justyna Mleczko, Laura Palomo, Esperanza Gonzalez, Diana Cabrera, Angel Cogolludo, Francisco Perez Vizcaino, Sebastiaan van-Liempd, Juan M Falcon-Perez
Hepatocytes release extracellular vesicles (EVs) loaded with signaling molecules and enzymes into the bloodstream. Although the importance of EVs in the intercellular communication is already recognized, the metabolic impact of the enzymes carried by these vesicles is still unclear. We evaluated the global effect of the enzymatic activities of EVs by performing untargeted metabolomic profiling of serum samples after their exposure to EVs. This approach revealed a significant change in the abundance of 94 serum metabolic signals...
February 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28204504/profiling-the-metabolic-signals-involved-in-chemical-communication-between-microbes-using-imaging-mass-spectrometry
#6
Nikolas M Stasulli, Elizabeth A Shank
No abstract text is available yet for this article.
November 1, 2016: FEMS Microbiology Reviews
https://www.readbyqxmd.com/read/28203251/sulfated-glycans-and-related-digestive-enzymes-in-the-zika-virus-infectivity-potential-mechanisms-of-virus-host-interaction-and-perspectives-in-drug-discovery
#7
REVIEW
Vitor H Pomin
As broadly reported, there is an ongoing Zika virus (ZIKV) outbreak in countries of Latin America. Recent findings have demonstrated that ZIKV causes severe defects on the neural development in fetuses in utero and newborns. Very little is known about the molecular mechanisms involved in the ZIKV infectivity. Potential therapeutic agents are also under investigation. In this report, the possible mechanisms of action played by glycosaminoglycans (GAGs) displayed at the surface proteoglycans of host cells, and likely in charge of interactions with surface proteins of the ZIKV, are highlighted...
2017: Interdisciplinary Perspectives on Infectious Diseases
https://www.readbyqxmd.com/read/28202725/stretchable-living-materials-and-devices-with-hydrogel-elastomer-hybrids-hosting-programmed-cells
#8
Xinyue Liu, Tzu-Chieh Tang, Eléonore Tham, Hyunwoo Yuk, Shaoting Lin, Timothy K Lu, Xuanhe Zhao
Living systems, such as bacteria, yeasts, and mammalian cells, can be genetically programmed with synthetic circuits that execute sensing, computing, memory, and response functions. Integrating these functional living components into materials and devices will provide powerful tools for scientific research and enable new technological applications. However, it has been a grand challenge to maintain the viability, functionality, and safety of living components in freestanding materials and devices, which frequently undergo deformations during applications...
February 15, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28201874/noise-induced-and-control-of-collective-behavior-in-a-population-of-coupled-chemical-oscillators
#9
Alberto P Munuzuri, Juan Pérez-Mercader
Synchronization of intercommunicating individual oscillators is an important form of collective behavior used in Nature as a mechanism to face dangers, act collectively and communicate. The involvement of the medium where oscillators exist is an important ingredient. Because of their nature and/or their multiple different components the medium and the environment are often perceived as stochastic relative to the deterministic nature of the individuals at some scale. This injects energy/matter into the system in ways that can enhance or deenhance communication in a stochastic manner...
February 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28196854/hypothalamic-transcriptomic-alterations-in-male-and-female-california-mice-peromyscus-californicus-developmentally-exposed-to-bisphenol-a-or-ethinyl-estradiol
#10
Sarah A Johnson, William G Spollen, Lindsey K Manshack, Nathan J Bivens, Scott A Givan, Cheryl S Rosenfeld
Bisphenol A (BPA) is an endocrine-disrupting chemical (EDC) prevalent in many household items. Rodent models and human epidemiological studies have linked this chemical to neurobehavior impairments. In California mice, developmental exposure to BPA results in sociosexual disorders at adulthood, including communication and biparental care deficits, behaviors that are primarily regulated by the hypothalamus. Thus, we sought to examine the transcriptomic profile in this brain region of juvenile male and female California mice offspring exposed from periconception through lactation to BPA or ethinyl estradiol (EE, estrogen present in birth control pills and considered a positive estrogen control for BPA studies)...
February 2017: Physiological Reports
https://www.readbyqxmd.com/read/28195203/reproductive-strategies-of-the-coral-turbinaria-reniformis-in-the-northern-gulf-of-aqaba-red-sea
#11
Hanna Rapuano, Itzchak Brickner, Tom Shlesinger, Efrat Meroz-Fine, Raz Tamir, Yossi Loya
Here we describe for the first time the reproductive biology of the scleractinian coral Turbinaria reniformis studied during three years at the coral reefs of Eilat and Aqaba. We also investigated the possibility of sex change in individually tagged colonies followed over a period of 12 years. T. reniformis was found to be a stable gonochorist (no detected sex change) that reproduces by broadcast spawning 5-6 nights after the full moon of June and July. Spawning was highly synchronized between individuals in the field and in the lab...
February 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28195061/overview-of-the-preclinical-pharmacological-properties-of-nigella-sativa-black-seeds-a-complementary-drug-with-historical-and-clinical-significance
#12
E Z Dajani, T G Shahwan, N E Dajani
Nigella sativa (N. sativa, black seeds; or sometimes known by many other names such as the blessed seed by the Arabs, black cumin in the Holy Bible, black caraway and Kalonji in South Asia) has been traditionally used for many years not only as a food but also as complementary drug. It is the objective of this communication to review the evidence-based pre-clinical pharmacological actions of N. sativa as a basis of its existing and potential new human clinical uses. Primary PubMed literature searches and secondary Medline searches were conducted to define N...
December 2016: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28193809/living-in-the-dark-does-not-mean-a-blind-life-bird-and-mammal-visual-communication-in-dim-light
#13
REVIEW
Vincenzo Penteriani, María Del Mar Delgado
For many years, it was believed that bird and mammal communication 'in the dark of the night' relied exclusively on vocal and chemical signalling. However, in recent decades, several case studies have conveyed the idea that the nocturnal world is rich in visual information. Clearly, a visual signal needs a source of light to work, but diurnal light (twilight included, i.e. any light directly dependent on the sun) is not the only source of luminosity on this planet. Actually, moonlight represents a powerful source of illumination that cannot be neglected from the perspective of visual communication...
April 5, 2017: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28190758/intercellular-signalling-cross-talk-to-kill-to-heal-and-to-rejuvenate
#14
REVIEW
Egor Y Plotnikov, Denis N Silachev, Vasily A Popkov, Ljubava D Zorova, Irina B Pevzner, Savva D Zorov, Stanislovas S Jankauskas, Valentina A Babenko, Gennady T Sukhikh, Dmitry B Zorov
Intercellular cross-talk is a fundamental process for spreading cellular signals between neighbouring and distant cells to properly regulate their metabolism, to coordinate homeostasis, adaptation and survival as a functional tissue and organ. In this review, we take a close molecular view of the underpinning molecular mechanisms of such complex intercellular communications. There are several studied forms of cell-to-cell communications considered crucial for the maintenance of multicellular organisms. The most explored is paracrine signalling which is realised through the release of diffusible signalling factors (e...
January 23, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28190566/effects-of-wireless-packet-loss-in-industrial-process-control-systems
#15
Yongkang Liu, Richard Candell, Nader Moayeri
Timely and reliable sensing and actuation control are essential in networked control. This depends on not only the precision/quality of the sensors and actuators used but also on how well the communications links between the field instruments and the controller have been designed. Wireless networking offers simple deployment, reconfigurability, scalability, and reduced operational expenditure, and is easier to upgrade than wired solutions. However, the adoption of wireless networking has been slow in industrial process control due to the stochastic and less than 100% reliable nature of wireless communications and lack of a model to evaluate the effects of such communications imperfections on the overall control performance...
February 9, 2017: ISA Transactions
https://www.readbyqxmd.com/read/28179565/high-resolution-imaging-of-cellular-dopamine-efflux-using-a-fluorescent-nanosensor-array
#16
Sebastian Kruss, Daniel P Salem, Lela Vuković, Barbara Lima, Emma Vander Ende, Edward S Boyden, Michael S Strano
Intercellular communication via chemical signaling proceeds with both spatial and temporal components, but analytical tools, such as microfabricated electrodes, have been limited to just a few probes per cell. In this work, we use a nonphotobleaching fluorescent nanosensor array based on single-walled carbon nanotubes (SWCNTs) rendered selective to dopamine to study its release from PC12 neuroprogenitor cells at a resolution exceeding 20,000 sensors per cell. This allows the spatial and temporal dynamics of dopamine release, following K(+) stimulation, to be measured at exceedingly high resolution...
February 8, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28178286/sexual-communication-in-castniid-moths-males-mark-their-territories-and-appear-to-bear-all-chemical-burden
#17
Carmen Quero, Victor Sarto I Monteys, Gloria Rosell, Marc Puigmartí, Angel Guerrero
Castniid moths (Lepidoptera: Castniidae) display a butterfly-like reproductive behavior, i.e., they use visual stimuli for mate location and females have apparently lost their pheromone glands in an evolutionary context. In this paper we report for the first time the identification of three new compounds, namely n-octadecyl acetate, (Z)-9-octadecenyl acetate and (E,Z)-2,13-octadecadienyl acetate, in males of the Castniid Palm Borer, Paysandisia archon, which could be involved in its short-range courtship behavior, and also shed light on recent controversies on the sexual behavior of the species...
2017: PloS One
https://www.readbyqxmd.com/read/28177418/evaluating-public-and-regulatory-acceptance-for-urban-soil-management-approaches
#18
John F Obrycki, Nicholas T Basta, Robyn S Wilson
Regulators ( = 14) and the public ( = 30) were surveyed to compare how they perceived contaminated soil management strategies, including bioavailability assessments, using a mental models approach. Both groups proposed similar soil contamination definitions and agreed laboratory tests were needed to identify contaminants. When responding to open-ended questions about management options, regulators emphasized the risk assessment process, whereas the public noted specific treatment options. The majority of the public (68%) and regulators (86%) were concerned about particular contaminants...
January 2017: Journal of Environmental Quality
https://www.readbyqxmd.com/read/28174541/regulation-of-connexin-based-channels-by-fatty-acids
#19
REVIEW
Carlos Puebla, Mauricio A Retamal, Rodrigo Acuña, Juan C Sáez
In this mini-review, we briefly summarize the current knowledge about the effects of fatty acids (FAs) on connexin-based channels, as well as discuss the limited information about the impact FAs may have on pannexins (Panxs). FAs regulate diverse cellular functions, some of which are explained by changes in the activity of channels constituted by connexins (Cxs) or Panxs, which are known to play critical roles in maintaining the functional integrity of diverse organs and tissues. Cxs are transmembrane proteins that oligomerize into hexamers to form hemichannels (HCs), which in turn can assemble into dodecamers to form gap junction channels (GJCs)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28173762/binding-affinity-of-five-pbps-to-ostrinia-sex-pheromones
#20
Tiantao Zhang, Yaqi Sun, Kevin W Wanner, Brad S Coates, Kanglai He, Zhenying Wang
BACKGROUND: Pheromone binding proteins (PBPs) of male Lepidoptera function in chemical communication, mate attraction and recognition. Directional selection was previously predicted between PBP3 orthologs of Ostrinia furnacalis and Ostrinia nubilalis were interpreted as being involved in sexual isolation. RESULTS: In vitro assays show that recombinant male OfurPBP3 bound O. furnacalis sex pheromones, Z-12-tetradecenyl acetate (Z12-14:OAc) and E-12-tetradecenyl acetate (E12-14:OAc), as well as to ECB pheromones Z11- and E11-14:OAc...
February 7, 2017: BMC Molecular Biology
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