The application of beneficial microorganisms for corals (BMC) decreases the bleaching susceptibility and mortality rate of corals. BMC selection is typically performed via molecular and biochemical assays, followed by genomic screening for BMC traits. Herein, we present a comprehensive in silico framework to explore a set of six putative BMC strains.
View Article and Find Full Text PDFUnlabelled: Corals establish symbiotic relationships with microorganisms, especially endosymbiotic photosynthetic algae. Although other microbes have been commonly detected in coral tissues, their identity and beneficial functions for their host are unclear. Here, we confirm the beneficial outcomes of the inoculation of bacteria selected as probiotics and use fluorescence hybridization (FISH) to define their localization in the coral .
View Article and Find Full Text PDFThis study investigates the physiological response to heat stress of three genetically different Symbiodiniaceae strains isolated from the scleractinian coral Mussismilia braziliensis, endemic of the Abrolhos Bank, Brazil. Cultures of two Symbiodinium sp. and one Cladocopium sp.
View Article and Find Full Text PDFBeneficial microorganisms for corals (BMCs) ameliorate environmental stress, but whether they can prevent mortality and the underlying host response mechanisms remains elusive. Here, we conducted omics analyses on the coral exposed to bleaching conditions in a long-term mesocosm experiment and inoculated with a selected BMC consortium or a saline solution placebo. All corals were affected by heat stress, but the observed "post-heat stress disorder" was mitigated by BMCs, signified by patterns of dimethylsulfoniopropionate degradation, lipid maintenance, and coral host transcriptional reprogramming of cellular restructuration, repair, stress protection, and immune genes, concomitant with a 40% survival rate increase and stable photosynthetic performance by the endosymbiotic algae.
View Article and Find Full Text PDFBackground: Beginning in the last century, coral reefs have suffered the consequences of anthropogenic activities, including oil contamination. Chemical remediation methods, such as dispersants, can cause substantial harm to corals and reduce their resilience to stressors. To evaluate the impacts of oil contamination and find potential alternative solutions to chemical dispersants, we conducted a mesocosm experiment with the fire coral Millepora alcicornis, which is sensitive to environmental changes.
View Article and Find Full Text PDFFormamidinium lead iodide (FAPbI3) can be used in its cubic, black form as a light absorber material in single-junction solar cells. It has a band-gap (1.5 eV) close to the maximum of the Shockley-Queisser limit, and reveals a high absorption coefficient.
View Article and Find Full Text PDFAntigen-presenting cells participate and are implicated in the pathogenesis of multiple sclerosis. In our study we assessed the frequency of plasmacytoid (pDC) and myeloid (mDC) dendritic cells and the classical, intermediate and non-classical monocytes subsets, as well as their phenotypic and functional profile. We evaluated peripheral blood from relapsing-remitting patients treated with IFN-β in remission and relapse phases and from healthy subjects.
View Article and Find Full Text PDFPurpose: For x-ray beams in the low and medium energy range, reference dosimetry is established in terms of air kerma. Fricke dosimetry has shown great potential in the absolute measurements of the absorbed dose to water for high-energy ranges. Therefore, the main purpose of this work was to compare the absorbed dose to water for medium-energy x-ray beams obtained through Fricke dosimetry with that obtained from the air kerma rate.
View Article and Find Full Text PDFLead halide perovskite semiconductors providing record efficiencies of solar cells have usually mixed compositions doped in A- and X-sites to enhance the phase stability. The cubic form of formamidinium (FA) lead iodide reveals excellent opto-electronic properties but transforms at room temperature (RT) into a hexagonal structure which does not effectively absorb visible light. This metastable form and the mechanism of its stabilization by Cs+ and Br- incorporation are poorly characterized and insufficiently understood.
View Article and Find Full Text PDFRadio pulsars in short-period eccentric binary orbits can be used to study both gravitational dynamics and binary evolution. The binary system containing PSR J1141-6545 includes a massive white dwarf (WD) companion that formed before the gravitationally bound young radio pulsar. We observed a temporal evolution of the orbital inclination of this pulsar that we infer is caused by a combination of a Newtonian quadrupole moment and Lense-Thirring (LT) precession of the orbit resulting from rapid rotation of the WD.
View Article and Find Full Text PDFOur work consists of a pilot study to characterize circulating Th/c1, Th/c2, Th/c17, Treg and Tfh-like populations and IL-17 serum levels of relapsing-remitting (RR) MS patients treated with IFN-β, compared with healthy controls. In remission RRMS patients, we observe increased Th/c17 cells frequency committed to a Th1 profile and increased soluble IL-17 levels. Moreover, a shift toward Th/c2 with reduction of Tc1 cells and decrease in effector/terminal differentiated compartment of Th1 cells were also observed.
View Article and Find Full Text PDFAlthough numerous studies have been carried out on the impacts of oil spills on coral physiology, most have relied on laboratory assays. This scarcity is partly explained by the difficulty of reproducing realistic conditions in a laboratory setting or of performing experiments with toxic compounds in the field. Mesocosm systems provide the opportunity to carry out such studies with safe handling of contaminants while reproducing natural conditions required by living organisms.
View Article and Find Full Text PDFAlthough the early coral reef-bleaching warning system (NOAA/USA) is established, there is no feasible treatment that can minimize temperature bleaching and/or disease impacts on corals in the field. Here, we present the first attempts to extrapolate the widespread and well-established use of bacterial consortia to protect or improve health in other organisms (e.g.
View Article and Find Full Text PDFOur aim was to quantify circulating B cell subsets; immature/transitional, naïve, CD27 and CD27 memory cells and plasmablasts, in relapsing-remitting multiple sclerosis patients treated with IFN-β. The most relevant findings were a significant increase of plasmablasts and a decrease of immature/transitional B cells, resulting in a decreased ratio between those cells in relapse RRMS, together with an increase of CD27 and CD27IgM memory B cell subsets in both phases of the disease. These alterations point to an active B cell response, particularly in relapse, and the above referred ratio could constitute a good biomarker of relapse in patients that underwent IFN-β treatment.
View Article and Find Full Text PDFWe characterized circulating gamma-delta T cells in relapsing-remitting multiple sclerosis (RRMS) patients, during remission and relapse phases. In relapse, we observed a decrease of circulating CCR5 γδ T cell subset, together with a decrease in EOMES and granzyme B mRNA expression in γδ T cells, suggesting a reduction of the cytotoxic potential of this subset. Moreover, we also found a higher frequency of IFNγ γδ T cells, which may indicate that these cells are assuming a more regulatory function associated to a Th1 profile.
View Article and Find Full Text PDFThe symbiotic association between the coral animal and its endosymbiotic dinoflagellate partner is central to the success of corals. However, an array of other microorganisms associated with coral (i.e.
View Article and Find Full Text PDFRecent nondetection of gravitational-wave backgrounds from pulsar timing arrays casts further uncertainty on the evolution of supermassive black hole binaries. We study the capabilities of current gravitational-wave observatories to detect individual binaries and demonstrate that, contrary to conventional wisdom, some are, in principle, detectable throughout the Universe. In particular, a binary with rest-frame mass ≳10^{10}M_{⊙} can be detected by current timing arrays at arbitrarily high redshifts.
View Article and Find Full Text PDFIn this paper, we simulate temperature reductions during heat-wave events and during typical summer conditions from the installation of highly reflective "cool" roofs in the Chinese megacity of Guangzhou. We simulate temperature reductions during six of the strongest historical heat-wave events over the past decade, finding average urban midday temperature reductions of 1.2 °C.
View Article and Find Full Text PDFThe paucity of observed supermassive black hole binaries (SMBHBs) may imply that the gravitational wave background (GWB) from this population is anisotropic, rendering existing analyses suboptimal. We present the first constraints on the angular distribution of a nanohertz stochastic GWB from circular, inspiral-driven SMBHBs using the 2015 European Pulsar Timing Array data. Our analysis of the GWB in the ~2-90 nHz band shows consistency with isotropy, with the strain amplitude in l>0 spherical harmonic multipoles ≲40% of the monopole value.
View Article and Find Full Text PDFBackground: According to the "World Cancer Research Fund" and the "American Institute of Cancer Research" (WCRF/AICR) one in four cancer cases could be prevented through a healthy diet, weight control and physical activity.
Objective: To explore the association between the WCRF/AICR recommendations and risk of breast cancer.
Methods: During the period 2006 to 2011 we recruited 973 incident cases of breast cancer and 973 controls from 17 Spanish Regions.
J Chromatogr B Analyt Technol Biomed Life Sci
November 2014
A new, sensitive and fast high-performance liquid chromatography-diode-array detection assay based on microextraction by packed sorbent (MEPS/HPLC-DAD) is herein reported, for the first time, to simultaneously quantify carbamazepine (CBZ), lamotrigine (LTG), oxcarbazepine (OXC), phenobarbital (PB), phenytoin (PHT), and the active metabolites carbamazepine-10,11-epoxide (CBZ-E) and licarbazepine (LIC) in human plasma. Chromatographic separation of analytes and ketoprofen, used as internal standard (IS), was achieved in less than 15min on a C18-column, at 35°C, using acetonitrile (6%) and a mixture (94%) of water-methanol-triethylamine (73.2:26.
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