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https://www.readbyqxmd.com/read/29666774/coral-dermatitis-or-infectious-dermatitis-report-of-a-case-of-staphylococcus-aureus-infection-of-skin-after-scuba-diving
#1
Venkataramana Kandi
Skin lesion which develops after deep sea diving is termed as coral dermatitis. The corals are known to produce a toxic substance which when comes in to contact with human skin may elicit hypersensitive reactions. Most previous reports highlight the allergic reactions caused by deep sea diving. This is a rare case of staphylococcal skin infection in a second-year medical student caused by Staphylococcus aureus ; he reported a history of deep sea diving before being presented to the hospital with skin rashes...
February 16, 2018: Curēus
https://www.readbyqxmd.com/read/29666437/increasing-thermal-stress-for-tropical-coral-reefs-1871-2017
#2
J M Lough, K D Anderson, T P Hughes
Tropical corals live close to their upper thermal limit making them vulnerable to unusually warm summer sea temperatures. The resulting thermal stress can lead to breakdown of the coral-algal symbiosis, essential for the functioning of reefs, and cause coral bleaching. Mass coral bleaching is a modern phenomenon associated with increases in reef temperatures due to recent global warming. Widespread bleaching has typically occurred during El Niño events. We examine the historical level of stress for 100 coral reef locations with robust bleaching histories...
April 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29665418/a-continuous-genome-assembly-of-the-corkwing-wrasse-symphodus-melops
#3
Morten Mattingsdal, Sissel Jentoft, Ole K Tørresen, Halvor Knutsen, Michael M Hansen, Joana I Robalo, Zuzanna Zagrodzka, Carl André, Enrique Blanco Gonzalez
The wrasses (Labridae) are one of the most successful and species-rich families of the Perciformes order of teleost fish. Its members display great morphological diversity, and occupy distinct trophic levels in coastal waters and coral reefs. The cleaning behaviour displayed by some wrasses, such as corkwing wrasse (Symphodus melops), is of particular interest for the salmon aquaculture industry to combat and control sea lice infestation as an alternative to chemicals and pharmaceuticals. There are still few genome assemblies available within this fish family for comparative and functional studies, despite the rapid increase in genome resources generated during the past years...
April 14, 2018: Genomics
https://www.readbyqxmd.com/read/29665294/graphene-oxide-quantum-dots-exfoliated-from-carbon-fibers-by-microwave-irradiation-two-photoluminescence-centers-and-self-assembly-behavior
#4
Jian-Min Yuan, Rui Zhao, Zhen-Jun Wu, Wei Li, Xin-Guo Yang
Graphene oxide quantum dots (GOQDs) attract great attention for their unique properties and promising application potential. The difficulty in the formation of a confined structure, and the numerous and diverse oxygen-containing functional groups results in a low emission yield to GOQDs. Here, GOQDs with a size of about 5 nm, exfoliated from carbon fibers by microwave irradiation, are detected and analyzed. The exfoliated GOQDs are deeply oxidized and induce large numbers of epoxy groups and ether bonds, but only a small amount of carbonyl groups and hydroxyl groups...
April 17, 2018: Small
https://www.readbyqxmd.com/read/29661017/a-novel-orange-colored-bimolecular-fluorescence-complementation-bifc-assay-using-monomeric-kusabira-orange-protein
#5
Yuta Fujii, Ayaka Yoshimura, Yutaka Kodama
The bimolecular fluorescence complementation (BiFC) assay was developed as a tool for the visualization of protein-protein interactions in living cells. To date, many types of BiFC systems with distinct colors have been developed. Most of the colors in the visible spectrum have been used in BiFC assays, with the exception of orange. In this study, we developed an orange-colored BiFC system using the Kusabira-Orange (KO) protein from the stony coral Fungia concinna. To obtain bright BiFC fluorescence, we compared fluorescence intensities of two monomeric KO variants (mKO1 and mKO2) and identified mKO2 as brighter than mKO1...
April 2018: BioTechniques
https://www.readbyqxmd.com/read/29660542/time-to-stop-mucking-around-impacts-of-underwater-photography-on-cryptobenthic-fauna-found-in-soft-sediment-habitats
#6
Maarten De Brauwer, Benjamin J Saunders, Rohani Ambo-Rappe, Jamaluddin Jompa, Jennifer L McIlwain, Euan S Harvey
Scuba diving tourism is a sustainable source of income for many coastal communities, but can have negative environmental impacts if not managed effectively. Diving on soft sediment habitats, typically referred to as 'muck diving', is a growing multi-million dollar industry with a strong focus on photographing cryptobenthic fauna. We assessed how the environmental impacts of scuba divers are affected by the activity they are engaged in while diving and the habitat they dive in. To do this, we observed 66 divers on coral reefs and soft sediment habitats in Indonesia and the Philippines...
April 13, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29660444/ca-2-binding-protein-1-regulates-hippocampal-dependent-memory-and-synaptic-plasticity
#7
Tian Yang, Jeremiah K Britt, Coral J Cintrón-Pérez, Edwin Vázquez-Rosa, Kevin V Tobin, Grant Stalker, Jason Hardie, Rebecca J Taugher, John Wemmie, Andrew A Pieper, Amy Lee
Ca2+ binding protein 1 (CaBP1) is a Ca2+ sensing protein similar to calmodulin that potently regulates voltage-gated Ca2+ channels. Unlike calmodulin, however, CaBP1 is mainly expressed in neuronal cell-types and enriched in the hippocampus, where its function is unknown. Here, we investigated the role of CaBP1 in hippocampal-dependent behaviors using mice lacking expression of CaBP1 (C-KO). By western blot, the largest CaBP1 splice variant, caldendrin, was detected in hippocampal lysates from wild-type (WT) but not C-KO mice...
April 13, 2018: Neuroscience
https://www.readbyqxmd.com/read/29659974/active-host-response-to-algal-symbionts-in-the-sea-slug-elysia-chlorotica
#8
Cheong Xin Chan, Pavel Vaysberg, Dana C Price, Karen N Pelletreau, Mary E Rumpho, Debashish Bhattacharya
Sacoglossan sea slugs offer fascinating systems to study the onset and persistence of algal-plastid symbioses. Elysia chlorotica is particularly noteworthy because it can survive for months, relying solely on energy produced by ingested plastids of the stramenopile alga Vaucheria litorea that are sequestered in cells lining its digestive diverticula. How this animal can maintain the actively photosynthesizing organelles without replenishment of proteins from the lost algal nucleus remains unknown. Here we used RNA-Seq analysis to test the idea that plastid sequestration leaves a significant signature on host gene expression during E...
April 5, 2018: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/29659616/estimating-nearshore-coral-reef-associated-fisheries-production-from-the-main-hawaiian-islands
#9
Kaylyn S McCoy, Ivor D Williams, Alan M Friedlander, Hongguang Ma, Lida Teneva, John N Kittinger
Currently, information on nearshore reef-associated fisheries is frequently disparate or incomplete, creating a challenge for effective management. This study utilized an existing non-commercial fishery dataset from Hawai'i, covering the period 2004-13, to estimate a variety of fundamental fishery parameters, including participation, effort, gear use, and catch per unit effort. We then used those data to reconstruct total catches per island. Non-commercial fisheries in this case comprise recreational, subsistence, and cultural harvest, which may be exchanged, but are not sold...
2018: PloS One
https://www.readbyqxmd.com/read/29659606/humoral-immunity-to-memory-antigens-and-pathogens-is-maintained-in-patients-with-chronic-kidney-disease
#10
Nadezhda A Wall, C Coral Dominguez-Medina, Sian E Faustini, Charlotte N Cook, Andrew McClean, Mark D Jesky, Marisol Perez-Toledo, Matthew D Morgan, Alexandra G Richter, Charles J Ferro, Paul Cockwell, Paul A Moss, Ian R Henderson, Lorraine Harper, Adam F Cunningham
Patients with chronic kidney disease (CKD) have an increased risk of infection and poorer responses to vaccination. This suggests that CKD patients have an impaired responsiveness to all antigens, even those first encountered before CKD onset. To examine this we evaluated antibody responses against two childhood vaccine antigens, tetanus (TT) and diphtheria toxoids (DT) and two common pathogens, cytomegalovirus (CMV) and Salmonella enterica serovar Enteritidis (SEn) in two independent cohorts consisting of age-matched individuals with and without CKD...
2018: PloS One
https://www.readbyqxmd.com/read/29658157/temperature-influences-habitat-preference-of-coral-reef-fishes-will-generalists-become-more-specialised-in-a-warming-ocean
#11
Paloma A Matis, Jennifer M Donelson, Stephen Bush, Rebecca J Fox, David J Booth
Climate change is expected to pose a significant risk to species that exhibit strong behavioural preferences for specific habitat types, with generalist species assumed to be less vulnerable. In this study, we conducted habitat choice experiments to determine how water temperature influences habitat preference for three common species of coral reef damselfish (Pomacentridae) that differ in their levels of habitat specialisation. The lemon damselfish Pomacentrus moluccensis, a habitat specialist, consistently selected complex coral habitat across all temperature treatments (selected based on local average seasonal temperatures naturally experienced in situ: ambient winter 22°C; ambient summer 28°C; and elevated 31°C)...
April 15, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29652789/terpenoids-from-the-soft-coral-sinularia-sp-collected-in-yongxing-island
#12
Guo-Fei Qin, Xu-Li Tang, Yan-Ting Sun, Xiang-Chao Luo, Jing Zhang, Leen van Ofwegen, Ping-Jyun Sung, Ping-Lin Li, Guo-Qiang Li
Three new sesquiterpenoids (sinuketal ( 1 ), sinulins A and B ( 2 and 3 )) and two new cembranoids (sinulins C and D ( 4 and 5 )), as well as eight known sesquiterpenoids ( 6–13 ) and eight known cembranoids ( 14–21 ), were isolated from the Xisha soft coral Sinularia sp. Their structures were elucidated by extensive spectroscopic analysis. Compound 1 possesses an unprecedented isopropyl-branched bicyclo [6.3.0] undecane carbon skeleton with unique endoperoxide moiety, and a plausible biosynthetic pathway of it was postulated...
April 13, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29652188/serum-concentrations-of-apelin-17-isoform-vary-in-accordance-to-blood-pressure-categories-in-individuals-with-obesity-class-3
#13
Luis Javier Cano Martínez, Ramón Mauricio Coral Vázquez, Juan Pablo Méndez, Silvia Trejo, Juan Carlos Pérez Razo, Patricia Canto
BACKGROUND: The aim of this study was to investigate if serum concentrations of apelin-36, apelin-17, apelin-13 or apelin-12 were different in obesity class 3 individuals with hypertension, when compared to those without hypertension (normal or high-normal). SUBJECTS AND METHODS: Twenty six individuals with obesity class 3-related hypertension and thirty three individuals without hypertension, who were divided in individuals with normal (n = 23) or with high-normal (n = 10) blood pressure (BP) were analyzed...
April 13, 2018: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/29651298/true-or-false-coral-snake-is-it-worth-the-risk-a-micrurus-corallinus-case-report
#14
Marcelo Abrahão Strauch, Guilherme Jones Souza, Jordana Nahar Pereira, Tyelli Dos Santos Ramos, Marcelo Oliveira Cesar, Marcelo Amorim Tomaz, Marcos Monteiro-Machado, Fernando Chagas Patrão-Neto, Paulo A Melo
Background: Bites provoked by the genus Micrurus represent less than 1% of snakebite cases notified in Brazil, a tiny fraction compared with other genus such as Bothrops and Crotalus , which together represent almost 80% of accidents. In addition to their less aggressive behavior, habits and morphology of coral snakes are determinant factors for such low incidence of accidents. Although Micrurus bites are rare, victims must be rescued and hospitalized in a short period of time, because this type of envenoming may evolve to a progressive muscle weakness and acute respiratory failure...
2018: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/29650460/how-does-an-animal-behave-like-a-plant-physiological-and-molecular-adaptations-of-zooxanthellae-and-their-hosts-to-symbiosis
#15
Denis Allemand, Paola Furla
Cnidarians (corals and sea anemones) harbouring photosynthetic microalgae derive several benefits from their association. To allow this association, numerous symbiotic-dependent adaptations in both partners, resulting from evolutionary pressures, have been selected. The dinoflagellate symbionts (zooxanthellae) are located inside a vesicle in the cnidarian host cell and are therefore exposed to a very different environment compared to the free-living state of these microalgae in terms of ion concentration and carbon content and speciation...
April 9, 2018: Comptes Rendus Biologies
https://www.readbyqxmd.com/read/29649858/pharmacokinetics-of-enrofloxacin-hcl-2h-2-o-enro-c-in-dogs-and-pk-pd-monte-carlo-simulations-against-leptospira-sp
#16
Hector Sumano, Luis Ocampo, Graciela Tapia, C de Jesus Mendoza, Lilia Gutierrez
Pharmacokinetics/pharmacodynamics (PK/PD) ratios of reference enrofloxacin (Enro-R) and enrofloxacin as HCl-2H2 O (Enro-C), as well as Monte Carlo simulations based on composite MIC50 and MIC90 vs. Leptospira sp., were carried out in dogs after their IM and oral administration (10 mg/kg). Plasma determination of enrofloxacin was achieved by means of high performance liquid chromatography (HPLC). Maximum plasma concentration values after oral administration were 1.47 ± 0.19 µg/mL and 5.3 ± 0.84 µg/mL for Enro-R and Enro-C, respectively, and 1...
April 12, 2018: Journal of Veterinary Science
https://www.readbyqxmd.com/read/29649309/high-quality-of-life-treatment-tolerability-safety-and-efficacy-in-hiv-patients-switching-from-triple-therapy-to-lopinavir-ritonavir-monotherapy-a-randomized-clinical-trial
#17
Juan Pasquau, Carmen Hidalgo-Tenorio, María Luisa Montes, Alberto Romero-Palacios, Jorge Vergas, Isabel Sanjoaquín, José Hernández-Quero, Koldo Aguirrebengoa, Francisco Orihuela, Arkaitz Imaz, María José Ríos-Villegas, Juan Flores, María Carmen Fariñas, Pilar Vázquez, María José Galindo, Isabel García-Mercé, Fernando Lozano, Ignacio de Los Santos, Samantha Elizabeth de Jesus, Coral García-Vallecillos
TRIAL DESIGN: The QoLKAMON study evaluated quality of life, efficacy and treatment safety in HIV patients receiving lopinavir/ritonavir in monotherapy (MT) versus continuing combined antiretroviral triple treatment with a boosted protease inhibitor (TT). METHODS: This was a 24-week, open-label, multicentre study in virologically-suppressed HIV-infected participants (N = 225) with a 2:1 randomization: 146 patients who switched to MT were compared with 79 patients who remained on a TT regimen...
2018: PloS One
https://www.readbyqxmd.com/read/29649301/pybadlands-a-framework-to-simulate-sediment-transport-landscape-dynamics-and-basin-stratigraphic-evolution-through-space-and-time
#18
Tristan Salles, Xuesong Ding, Gilles Brocard
Understanding Earth surface responses in terms of sediment dynamics to climatic variability and tectonics forcing is hindered by limited ability of current models to simulate long-term evolution of sediment transfer and associated morphological changes. This paper presents pyBadlands, an open-source python-based framework which computes over geological time (1) sediment transport from landmasses to coasts, (2) reworking of marine sediments by longshore currents and (3) development of coral reef systems. pyBadlands is cross-platform, distributed under the GPLv3 license and available on GitHub (http://github...
2018: PloS One
https://www.readbyqxmd.com/read/29643214/anemone-bleaching-increases-the-metabolic-demands-of-symbiont-anemonefish
#19
Tommy Norin, Suzanne C Mills, Amélie Crespel, Daphne Cortese, Shaun S Killen, Ricardo Beldade
Increased ocean temperatures are causing mass bleaching of anemones and corals in the tropics worldwide. While such heat-induced loss of algal symbionts (zooxanthellae) directly affects anemones and corals physiologically, this damage may also cascade on to other animal symbionts. Metabolic rate is an integrative physiological trait shown to relate to various aspects of organismal performance, behaviour and locomotor capacity, and also shows plasticity during exposure to acute and chronic stressors. As climate warming is expected to affect the physiology, behaviour and life history of animals, including ectotherms such as fish, we measured if residing in bleached versus unbleached sea anemones ( Heteractis magnifica ) affected the standard (i...
April 11, 2018: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29642488/sinularin-selectively-kills-breast-cancer-cells-showing-g2-m-arrest-apoptosis-and-oxidative-dna-damage
#20
Hurng-Wern Huang, Jen-Yang Tang, Fu Ou-Yang, Hui-Ru Wang, Pei-Ying Guan, Chiung-Yao Huang, Chung-Yi Chen, Ming-Feng Hou, Jyh-Horng Sheu, Hsueh-Wei Chang
The natural compound sinularin, isolated from marine soft corals, is antiproliferative against several cancers, but its possible selective killing effect has rarely been investigated. This study investigates the selective killing potential and mechanisms of sinularin-treated breast cancer cells. In 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H- tetrazolium, inner salt (MTS) assay, sinularin dose-responsively decreased the cell viability of two breast cancer (SKBR3 and MDA-MB-231) cells, but showed less effect on breast normal (M10) cells after a 24 h treatment...
April 8, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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