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https://www.readbyqxmd.com/read/28549320/light-emission-miracle-in-the-sea-and-preeminent-applications-of-bioluminescence-in-recent-new-biotechnology
#1
Sana Sharifian, Ahmad Homaei, Roohullah Hemmati, Khosro Khajeh
Bioluminescence is referred to the light emission by a living organism due to a specific biochemical reaction. This interesting feature of the organisms could highly influences behavioral and ecosystem dynamics. Luminescence, mostly observed in marine species, is generally higher in deep-living genera than in benthic or shallow organisms. However, among creatures living in land, fireflies, beetles, springtails and fungi have shown some bioluminescent activities. Classically, the emission of light is catalyzed by luciferase from a substrate...
May 17, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28549063/food-addiction-and-obesity-unnecessary-medicalization-of-hedonic-overeating
#2
REVIEW
Graham Finlayson
The concept of addiction is loaded with connotations and is often used for its political as much as its medical utility. The scientific case for 'food addiction' as a clinical phenotype currently rests on its association with generic diagnostic criteria for substance-related disorders being applied to everyday foods and eating-related problems. This has fused the concept of obesity with addiction regardless of whether it fits the definition. The hedonic, or reward, system can account for the ingestion of foods and drugs, confirming that they share neural substrates that differentiate liking and wanting...
May 26, 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/28548289/effects-of-food-borne-nanomaterials-on-gastrointestinal-tissues-and-microbiota
#3
REVIEW
Hans Bouwmeester, Meike van der Zande, Mark A Jepson
Ingestion of engineered nanomaterials is inevitable due to their addition to food and prevalence in food packaging and domestic products such as toothpaste and sun cream. In the absence of robust dosimetry and particokinetic data, it is currently challenging to accurately assess the potential toxicity of food-borne nanomaterials. Herein, we review current understanding of gastrointestinal uptake mechanisms, consider some data on the potential for toxicity of the most commonly encountered classes of food-borne nanomaterials (including TiO2 , SiO2, ZnO, and Ag nanoparticles), and discuss the potential impact of the luminal environment on nanoparticle properties and toxicity...
May 26, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28545458/determinants-of-eating-at-local-and-western-fast-food-venues-in-an-urban-asian-population-a-mixed-methods-approach
#4
Nasheen Naidoo, Rob M van Dam, Sheryl Ng, Chuen Seng Tan, Shiqi Chen, Jia Yi Lim, Mei Fen Chan, Ling Chew, Salome A Rebello
BACKGROUND: Like several Southeast Asian countries, Singapore has a complex eating-out environment and a rising eating-out prevalence. However the determinants and drivers of eating-out in urban Asian environments are poorly understood. METHODS: We examined the socio-demographic characteristics of persons who frequently ate away from home in local eateries called hawker centres and Western fast-food restaurants, using data from 1647 Singaporean adults participating in the National Nutrition Survey (NNS) 2010...
May 25, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/28543439/metagenomic-profiling-of-the-microbial-freshwater-communities-in-two-bulgarian-reservoirs
#5
Ivan Iliev, Galina Yahubyan, Mariana Marhova, Elena Apostolova, Mariyana Gozmanova, Gana Gecheva, Sonya Kostadinova, Angelina Ivanova, Vesselin Baev
Microorganisms inhabiting freshwater environments are an integral part of the aquatic ecosystems. Very few data are available regarding the profiles of the microbial communities in the reservoirs in Bulgaria, despite their key role in the biogeochemical processes. In the present study, we provide the first comprehensive metagenomic analysis on the planktonic bacterial diversity of two large and economically important Bulgarian reservoirs (Batak and Tsankov Kamak) using next-generation sequencing of 16S ribosomal RNA gene (16S rRNA)...
May 22, 2017: Journal of Basic Microbiology
https://www.readbyqxmd.com/read/28543036/self-assembly-of-two-hydrophobins-from-marine-fungi-affected-by-interaction-with-surfaces
#6
Paola Cicatiello, Principia Dardano, Marinella Pirozzi, Alfredo Maria Gravagnuolo, Luca De Stefano, Paola Giardina
Hydrophobins are amphiphilic fungal proteins endowed with peculiar characteristics, such as a high surface activity and an interface triggered self-assembly. Several applications of these proteins have been proposed in the food, cosmetics and biomedical fields. Moreover, their use as proteinaceous coatings can be effective for materials and nanomaterials applications. The discovery of novel hydrophobins with diverse properties may be advantageous from both the scientific and industrial points of view. Stressful environmental conditions of fungal growth may induce the production of proteins with peculiar features...
May 22, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/28542913/reduction-of-escherichia-coli-o157-h7-in-biofilms-using-bacteriophage-bpeco-19
#7
Mohammad Sadekuzzaman, Sungdae Yang, Md Furkanur Rahaman Mizan, Sang-Do Ha
Biofilm formation is a growing concern in the food industry. Escherichia coli O157:H7 is one of the most important foodborne pathogens that can persists in food and food-related environments and subsequently produce biofilms. The efficacy of bacteriophage BPECO 19 was evaluated against three E. coli O157:H7 strains in biofilms. Biofilms of the three E. coli O157:H7 strains were grown on abiotic (stainless steel, rubber, and minimum biofilm eradication concentration [MBEC(TM) ] device) and biotic (lettuce) surfaces at different temperatures...
May 19, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28542710/behavioral-inferences-from-the-high-levels-of-dental-chipping-in-homo-naledi
#8
Ian Towle, Joel D Irish, Isabelle De Groote
OBJECTIVES: A variety of mechanical processes can result in antemortem dental chipping. In this study, chipping data in the teeth of Homo naledi are compared with those of other pertinent dental samples to give insight into their etiology. MATERIALS AND METHODS: Permanent teeth with complete crowns evidencing occlusal wear were examined macroscopically. The location, number, and severity of fractures were recorded and compared to those found in samples of two other South African fossil hominin species and in samples of nonhuman primates (n = 3) and recent humans (n = 7)...
May 24, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28542506/impact-evaluation-of-different-cash-based-intervention-modalities-on-child-and-maternal-nutritional-status-in-sindh-province-pakistan-at-6-mo-and-at-1-y-a-cluster-randomised-controlled-trial
#9
Bridget Fenn, Tim Colbourn, Carmel Dolan, Silke Pietzsch, Murtaza Sangrasi, Jeremy Shoham
BACKGROUND: Cash-based interventions (CBIs), offer an interesting opportunity to prevent increases in wasting in humanitarian aid settings. However, questions remain as to the impact of CBIs on nutritional status and, therefore, how to incorporate them into emergency programmes to maximise their success in terms of improved nutritional outcomes. This study evaluated the effects of three different CBI modalities on nutritional outcomes in children under 5 y of age at 6 mo and at 1 y. METHODS AND FINDINGS: We conducted a four-arm parallel longitudinal cluster randomised controlled trial in 114 villages in Dadu District, Pakistan...
May 2017: PLoS Medicine
https://www.readbyqxmd.com/read/28542282/expression-patterns-of-members-of-the-ethylene-signaling-related-gene-families-in-response-to-dehydration-stresses-in-cassava
#10
Meng Yun Ren, Ren Jun Feng, Hou Rui Shi, Li Fang Lu, Tian Yan Yun, Ming Peng, Xiao Guan, Heng Zhang, Jing Yi Wang, Xi Yan Zhang, Cheng Liang Li, Yan Jun Chen, Peng He, Yin Dong Zhang, Jiang Hui Xie
Drought is the one of the most important environment stresses that restricts crop yield worldwide. Cassava (Manihot esculenta Crantz) is an important food and energy crop that has many desirable traits such as drought, heat and low nutrients tolerance. However, the mechanisms underlying drought tolerance in cassava are unclear. Ethylene signaling pathway, from the upstream receptors to the downstream transcription factors, plays important roles in environmental stress responses during plant growth and development...
2017: PloS One
https://www.readbyqxmd.com/read/28542003/providing-choice-in-exercise-influences-food-intake-at-the-subsequent-meal
#11
Natalya J Beer, James A Dimmock, Ben Jackson, Kym J Guelfi
The benefits of regular exercise for health are well established; however, certain behaviors following exercise, such as unhealthy or excessive food consumption, can counteract some of these benefits. PURPOSE: To investigate the effect of autonomy support (through the provision of choice) in exercise - relative to a no-choice condition with matched energy expenditure - on appetite and subsequent energy intake. METHODS: Fifty-eight men and women (body mass index: 22...
May 23, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28541931/the-role-of-constructed-wetlands-for-biomass-production-within-the-water-soil-waste-nexus
#12
C T Avellan, R Ardakanian, P Gremillion
The use of constructed wetlands for water pollution control has a long standing tradition in urban, peri-urban, rural, agricultural and mining environments. The capacity of wetland plants to take up nutrients and to filter organic matter has been widely discussed and presented in diverse fora and published in hundreds of articles. In an ever increasingly complex global world, constructed wetlands not only play a role in providing safe sanitation in decentralized settings, shelter for biodiversity, and cleansing of polluted sites, in addition, they produce biomass that can be harvested and used for the production of fodder and fuel...
May 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28541467/global-epidemiology-of-ctx-m-%C3%AE-lactamases-temporal-and-geographical-shifts-in-genotype
#13
Edward R Bevan, Annie M Jones, Peter M Hawkey
Globally, rates of ESBL-producing Enterobacteriaceae are rising. We undertook a literature review, and present the temporal trends in blaCTX-M epidemiology, showing that blaCTX-M-15 and blaCTX-M-14 have displaced other genotypes in many parts of the world. Explanations for these changes can be attributed to: (i) horizontal gene transfer (HGT) of plasmids; (ii) successful Escherichia coli clones; (iii) ESBLs in food animals; (iv) the natural environment; and (v) human migration and access to basic sanitation...
May 25, 2017: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/28540768/daily-stressors-trauma-exposure-and-mental-health-among-stateless-rohingya-refugees-in-bangladesh
#14
Andrew Riley, Andrea Varner, Peter Ventevogel, M M Taimur Hasan, Courtney Welton-Mitchell
The Rohingya of Myanmar are a severely persecuted minority who form one of the largest groups of stateless people; thousands of them reside in refugee camps in southeastern Bangladesh. There has been little research into the mental health consequences of persecution, war, and other historical trauma endured by the Rohingya; nor has the role of daily environmental stressors associated with continued displacement, statelessness, and life in the refugee camps, been thoroughly researched. This cross-sectional study examined: trauma history, daily environmental stressors, and mental health outcomes for 148 Rohingya adults residing in Kutupalong and Nayapara refugee camps in Bangladesh...
June 2017: Transcultural Psychiatry
https://www.readbyqxmd.com/read/28540345/barriers-and-facilitators-to-intake-of-dairy-products-in-adolescent-males-and-females-with-different-levels-of-habitual-intake
#15
Megan Racey, Jeanette Bransfield, Kathryn Capello, David Field, Verena Kulak, David Machmueller, Michèle Preyde, Genevieve Newton
Background: Dairy products and alternatives can contribute to overall good health including positive body composition and decreased adiposity; however, these foods are grossly underconsumed by youth, and worldwide, almost 25% of children are overweight or obese. Objective: The study investigated the barriers and facilitators toward dairy consumption by Grade 7 youth. Methods: Thirty 50-minute, audio-recorded focus groups were conducted with 134 students in eight Grade 7 classes across 5 elementary schools. Focus groups were led by trained facilitators in the elementary schools and participants were separated based on dairy consumption and gender...
2017: Global Pediatric Health
https://www.readbyqxmd.com/read/28539508/what-makes-specialized-food-caching-mountain-chickadees-successful-city-slickers
#16
Dovid Y Kozlovsky, Emily A Weissgerber, Vladimir V Pravosudov
Anthropogenic environments are a dominant feature of the modern world; therefore, understanding which traits allow animals to succeed in these urban environments is especially important. Overall, generalist species are thought to be most successful in urban environments, with better general cognition and less neophobia as suggested critical traits. It is less clear, however, which traits would be favoured in urban environments in highly specialized species. Here, we compared highly specialized food-caching mountain chickadees living in an urban environment (Reno, NV, USA) with those living in their natural environment to investigate what makes this species successful in the city...
May 31, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28539459/social-bet-hedging-in-vampire-bats
#17
Gerald G Carter, Damien R Farine, Gerald S Wilkinson
Helping kin or nonkin can provide direct fitness benefits, but helping kin also benefits indirect fitness. Why then should organisms invest in cooperative partnerships with nonkin, if kin relationships are available and more beneficial? One explanation is that a kin-limited support network is too small and risky. Even if additional weaker partnerships reduce immediate net cooperative returns, individuals extending cooperation to nonkin can maintain a larger social network which reduces the potential costs associated with losing a primary cooperation partner...
May 2017: Biology Letters
https://www.readbyqxmd.com/read/28539458/how-does-environment-influence-fighting-the-effects-of-tidal-flow-on-resource-value-and-fighting-costs-in-sea-anemones
#18
Alexandre V Palaoro, Mariana Velasque, Sandro Santos, Mark Briffa
An animal's decision to enter into a fight depends on the interaction between perceived resource value (V) and fighting costs (C). Both could be altered by predictable environmental fluctuations. For intertidal marine animals, such as the sea anemone Actinia equina, exposure to high flow during the tidal cycle may increase V by bringing more food. It may also increase C via energy expenditure needed to attach to the substrate. We asked whether simulated tidal cycles would alter decisions in fighting A. equina We exposed some individuals to still water and others to simulated tidal cycles...
May 2017: Biology Letters
https://www.readbyqxmd.com/read/28538875/particular-characteristics-of-atopic-eczema-in-tropical-environments-the-tropical-environment-control-for-chronic-eczema-and-molecular-assessment-teccema-cohort-study
#19
Jorge Sánchez, Andrés Sánchez, Ricardo Cardona
Background: Atopic dermatitis is a prevalent health problem in the world. Allergic sensitization is an important risk factor, but the roles of other factors, inherent in tropic region, are unknown. Objective: A cohort study was designed in a tropical city to investigate molecular and environmental risk factors for eczema, considering as particular features perennial exposure to mites, poor living conditions and others tropical characteristics. Methods: 433 patients were included at baseline and biological samples were collected during 24 months of follow-up...
March 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/28536979/quantifying-multiple-work-related-psychosocial-risk-factors-proposal-for-a-composite-indicator-based-on-the-copsoq-ii
#20
Adrienne Stauder, Katalin Nistor, Tünde Zakor, Anita Szabó, Anikó Nistor, Szilvia Ádám, Barna Konkolÿ Thege
PURPOSE: To determine national reference values for the Copenhagen Psychosocial Questionnaire (COPSOQ II) across occupational sectors and develop a composite score to estimate the cumulative effect of multiple work-related stressors, in order to facilitate the implementation of occupational health directives on psychosocial risk assessment. METHOD: Cross-sectional data was collected via an online questionnaire. The sample included 13,104 individuals and was representative of the general Hungarian adult working population in terms of gender, age, education, and occupation...
May 23, 2017: International Journal of Behavioral Medicine
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