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https://www.readbyqxmd.com/read/28545106/serum-microrna-signatures-as-liquid-biopsies-for-interrogating-hepatotoxic-mechanisms-and-liver-pathogenesis-in-human
#1
Julian Krauskopf, Theo M de Kok, Shelli J Schomaker, Mark Gosink, Deborah A Burt, Patricia Chandler, Roscoe L Warner, Kent J Johnson, Florian Caiment, Jos C Kleinjans, Jiri Aubrecht
MicroRNAs (miRNAs) released into the peripheral circulation upon cellular injury have shown a promise as a new class of tissue-specific biomarkers. We were first to demonstrate that next-generation sequencing analysis of serum from human subjects with acetaminophen-induced liver injury revealed a specific signature of circulating miRNAs. We consequently hypothesized that different types of hepatic liver impairments might feature distinct signatures of circulating miRNAs and that this approach might be useful as minimally invasive diagnostic "liquid biopsies" enabling the interrogation of underlying molecular mechanisms of injury in distant tissues...
2017: PloS One
https://www.readbyqxmd.com/read/28545071/characterization-of-the-urinary-microbiome-in-healthy-dogs
#2
Erin N Burton, Leah A Cohn, Carol N Reinero, Hans Rindt, Stephen G Moore, Aaron C Ericsson
The urinary bladder in healthy dogs has dogmatically been considered free of bacteria. This study used culture independent techniques to characterize the healthy canine urinary microbiota. Urine samples collected by antepubic cystocentesis from dogs without urinary infection were used for DNA extraction. Genital tract and rectal samples were collected simultaneously from the same dogs. The V4 hypervariable region of the 16S rRNA bacterial gene was amplified and compared against Greengenes database for OTU assignment and relative abundance for urine, genital, and rectal samples...
2017: PloS One
https://www.readbyqxmd.com/read/28544955/associations-of-anxiety-sensitivity-and-emotional-symptoms-with-the-subjective-effects-of-alcohol-cigarettes-and-cannabis-in-adolescents
#3
Raina D Pang, Casey R Guillot, Michael J Zvolensky, Marcel O Bonn-Miller, Adam M Leventhal
Maladaptive emotional traits (anxiety sensitivity [AS], fear of anxiety-related sensations and consequences) and symptoms (major depressive disorder [MDD] and generalized anxiety disorder [GAD] symptoms) could play a role in altering sensitivity to the subjective effects of drugs of abuse in adolescents. Data were drawn from a longitudinal study of high school students in Los Angeles, CA, USA who completed surveys and reported past six-month use of alcohol (n=1054), cigarettes (n=297), or cannabis (n=706). At each of the four semi-annual waves during mid-adolescence (14-16years old), students reported positive and negative subjective drug effects experienced in the prior six-months...
May 18, 2017: Addictive Behaviors
https://www.readbyqxmd.com/read/28544921/in-situ-formed-copper-nanoparticles-templated-by-tdt-mediated-dna-for-enhanced-spr-sensor-based-dna-assay
#4
Pei-Xin Yuan, Sheng-Yuan Deng, Chen-Yu Zheng, Serge Cosnier, Dan Shan
For the efficient surface plasmon resonance (SPR)-based DNA assay researching, signal amplification tactics were absolutely necessary. In this work, a sensitive SPR-DNA sensor was developed by employing in situ synthesis of copper nanoparticles (CuNPs) templated by poly-T sequences DNA from terminal deoxynucleotidyl transferase (TdT)-mediated extension, and synergistically with nano-effect deposition as the mass relay. The objective of this strategy was manifold: firstly, tDNA hybridized with the optimal designed probes to active the TdT-mediated DNA extension onto the surface of SPR chip, resulted a long poly-T sequences ssDNA chain in dsDNA terminal onto surface of gold chip and characterized by SPR signal amplitudes...
May 18, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28544326/haploinsufficiency-of-nr4a2-is-associated-with-a-neurodevelopmental-phenotype-with-prominent-language-impairment
#5
Miriam S Reuter, Mandy Krumbiegel, Gregor Schlüter, Arif B Ekici, André Reis, Christiane Zweier
Non-recurrent deletions in 2q24.1, minimally overlapping two genes, NR4A2 and GPD2, were recently described in individuals with language impairment and behavioral and cognitive symptoms. We herewith report on a female patient with a similar phenotype of severe language and mild cognitive impairment, in whom we identified a de novo deletion covering only NR4A2. NR4A2 encodes a transcription factor highly expressed in brain regions critical for speech and language and implicated in dopaminergic neuronal development...
May 24, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28544174/a-qualitative-study-of-younger-men-s-experience-of-heart-attack-myocardial-infarction
#6
Christopher J Merritt, Nicole de Zoysa, Jane M Hutton
OBJECTIVES: The effects of heart attack, or myocardial infarction (MI), across psychosocial domains may be particularly acute in younger adults, for whom serious health events are non-normative. MI morbidity is declining in Western countries, but in England MI numbers have plateaued for the under-45 cohort, where approximately 90% of patients are male. Qualitative research on younger adults' experience of MI is limited, and no study has sampled exclusively under-45s. This study aimed to understand how a sample of men under 45 adjusted to and made sense of MI...
May 24, 2017: British Journal of Health Psychology
https://www.readbyqxmd.com/read/28544168/presurgical-language-fmri-mapping-of-six-critical-regions
#7
Christopher F Benjamin, Patricia D Walshaw, Kayleigh Hale, William D Gaillard, Leslie C Baxter, Madison M Berl, Monika Polczynska, Stephanie Noble, Rafeed Alkawadri, Lawrence J Hirsch, Todd C Constable, Susan Y Bookheimer
Language mapping is a key goal in neurosurgical planning. fMRI mapping typically proceeds with a focus on Broca's and Wernicke's areas, although multiple other language-critical areas are now well-known. We evaluated whether clinicians could use a novel approach, including clinician-driven individualized thresholding, to reliably identify six language regions, including Broca's Area, Wernicke's Area (inferior, superior), Exner's Area, Supplementary Speech Area, Angular Gyrus, and Basal Temporal Language Area...
May 23, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28544122/pupal-emergence-pattern-in-cactophilic-drosophila-and-the-effect-of-host-plants
#8
Eduardo M Soto, Julián Padró, Pablo Milla Carmona, Diego T Tuero, Valeria P Carreira, Ignacio M Soto
Drosophila buzzatii and D. koepferae are sibling cactophilic species. The former breeds primarily on prickly pears (genus Opuntia) whereas the latter breeds on columnar cacti of the genera Cereus and Trichocereus, although with certain degree of niche overlapping. We examined the interspecific differences in diurnal temporal patterns of adult emergence from puparia and evaluated whether this behavior is affected by rearing in the different cactus hosts available in nature. We detected important host-dependent genetic variation for this trait differentially affecting the emergence schedule of these species...
May 23, 2017: Insect Science
https://www.readbyqxmd.com/read/28543951/determination-of-genetic-relatedness-from-low-coverage-human-genome-sequences-using-pedigree-simulations
#9
Michael D Martin, Flora Jay, Sergi Castellano, Montgomery Slatkin
We develop and evaluate methods for inferring relatedness among individuals from low-coverage DNA sequences of their genomes, with particular emphasis on sequences obtained from fossil remains. We suggest the major factors complicating the determination of relatedness among ancient individuals are sequencing depth, the number of overlapping sites, the sequencing error rate, and the presence of contamination from present-day genetic sources. We develop a theoretical model that facilitates the exploration of these factors and their relative effects, via measurement of pairwise genetic distances, without calling genotypes, and determine the power to infer relatedness under various scenarios of varying sequencing depth, present-day contamination, and sequencing error...
May 25, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28543887/treatment-of-venous-lake-with-multi-wavelength-595-and-1064-nm-lasers-in-asian-fitzpatrick-skin-type-iv-patients
#10
Jing Yang, Xiaohong Guo, Xiaorong Tong, Juan Tao
BACKGROUND: Multi-wavelength lasers are reportedly useful for treating venous lake (VL) in Caucasian patients. However, the same parameters may not be safe for Asian patients with Fitzpatrick skin type (FST) IV. PURPOSE: Report experience with using multi-wavelength laser for VL treatment in Asian patients with FST IV. METHODS: Seventeen episodes of VL in 15 Chinese patients with FST IV were treated. 595-nm pulsed dye (PDL) laser followed by 1,064-nm neodymium-doped yttrium aluminum garnet (Nd:YAG) laser were administered...
May 24, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28543871/tropical-specialist-versus-climate-generalist-diversification-and-demographic-history-of-sister-species-of-carlia%C3%A2-skinks-from-northwestern-australia
#11
Ana C Afonso Silva, Jason G Bragg, Sally Potter, Carlos Fernandes, Maria Manuela Coelho, Craig Moritz
Species endemic to the tropical regions are expected to be vulnerable to future climate change due in part to their relatively narrow climatic niches. In addition, these species are more likely to have responded strongly to past climatic change, and this can be explored through phylogeographic analyses. To test the hypothesis that tropical specialists are more sensitive to climate change than climate generalists, we generated and analyze sequence data from mtDNA and ~2500 exons to compare scales of historical persistence and population fluctuation in two sister species of Australian rainbow skinks: the tropical specialist Carlia johnstonei and the climate generalist C...
May 24, 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28543621/morphological-characteristics-of-the-oropharyngeal-cavity-tongue-palate-and-laryngeal-entrance-in-the-eurasian-coot-fulica-atra-linnaeus-1758
#12
M M A Abumandour, N E R El-Bakary
The present study represents the first definitive anatomical description of the oropharyngeal cavity of the coot Fulica atra. For this purpose, the organs of six birds were prepared to examine grossly and by SEM and stereomicroscope. The oval lingual apex had multiple overlapping branched acicular processes on its anterior and lateral border. The lingual apex and body had multiple caudally directed filiform-like papillae. By stereomicroscopy, the lingual root had a characteristic appearance and consisted of four parts...
May 22, 2017: Anatomia, Histologia, Embryologia
https://www.readbyqxmd.com/read/28543440/chronic-sleep-restriction-disrupts-interendothelial-junctions-in-the-hippocampus-and-increases-blood-brain-barrier-permeability
#13
G Hurtado-Alvarado, J Velázquez-Moctezuma, B Gómez-González
Chronic sleep loss in the rat increases blood-brain barrier permeability to Evans blue and FITC-dextrans in almost the whole brain and sleep recovery during short periods restores normal blood-brain barrier permeability. Sleep loss increases vesicle density in hippocampal endothelial cells and decreases tight junction protein expression. However, at the ultrastructural level the effect of chronic sleep loss on interendothelial junctions is unknown. In this study we characterised the ultrastructure of interendothelial junctions in the hippocampus, the expression of tight junction proteins, and quantified blood-brain barrier permeability to fluorescein-sodium after chronic sleep restriction...
May 23, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28543439/metagenomic-profiling-of-the-microbial-freshwater-communities-in-two-bulgarian-reservoirs
#14
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/28543135/bone-mineral-density-testing-and-bisphosphonate-and-oestrogen-prescribing-associated-with-depot-medroxyprogesterone-acetate-utilization-the-impact-of%C3%A2-the%C3%A2-boxed-warning
#15
E Eworuke, V Popat, D G Moeny
WHAT IS KNOWN AND OBJECTIVE: Depot medroxyprogesterone acetate (DMPA) prevents follicular maturation and ovulation, resulting in oestrogen deficiency. Oestrogen deficiency is particularly concerning as it is associated with decreases in bone mineral density (BMD) or bone mass. Widespread use of concurrent oestrogen or bisphosphonates with DMPA has been observed in a previous single-centre US study. The authors also reported that more than half of obstetrician-gynaecologists ordered BMD testing solely due to DMPA...
May 23, 2017: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/28543048/estimating-demographic-contributions-to-effective-population-size-in-an-age-structured-wild-population-experiencing-environmental-and-demographic-stochasticity
#16
Amanda E Trask, Eric M Bignal, Davy I McCracken, Stuart B Piertney, Jane M Reid
1.A population's effective size (Ne ) is a key parameter that shapes rates of inbreeding and loss of genetic diversity, thereby influencing evolutionary processes and population viability. However estimating Ne , and identifying key demographic mechanisms that underlie the Ne to census population size (N) ratio, remains challenging, especially for small populations with overlapping generations and substantial environmental and demographic stochasticity and hence dynamic age-structure. 2.A sophisticated demographic method of estimating Ne /N, which uses Fisher's reproductive value to account for dynamic age-structure, has been formulated...
May 24, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28542979/consequences-of-symbiont-co-infections-for-insect-host-phenotypes
#17
Ailsa H C McLean, Benjamin J Parker, Jan Hrček, James Kavanagh, Peter A D Wellham, H Charles J Godfray
1.Most animals host communities of symbiotic bacteria. In insects, these symbionts may have particularly intimate interactions with their hosts: many are intracellular and can play important roles in host ecology and evolution, including protection against natural enemies. 2.We investigated how interactions between different species or strains of endosymbiotic bacteria within an aphid host influence the outcome of symbiosis for both symbiont and host. 3.We first asked whether different combinations of facultative symbiont species or strains can exist in stable co-infections...
May 25, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28542900/the-sensory-trigeminal-complex-and-the-organisation-of-its-primary-afferents-in-the-zebra-finch-taeniopygia-guttata
#18
Macarena Faunes, J Martin Wild, Thomas Finger
Our knowledge of the avian sensory trigeminal system has been largely restricted to the principal trigeminal nucleus (PrV) and its ascending projections to the forebrain. Studies addressing the cytoarchitecture and organisation of afferent input to the sensory trigeminal complex, which includes both the PrV and the nuclei of the descending trigeminal tract (nTTD), have only been performed in pigeons and ducks. Here we extend such an analysis to a songbird, the zebra finch (Taeniopygia guttata). We describe the cytoarchitecture of the sensory trigeminal complex, the patterns of calbindin-like and substance P-like immunoreactivity, and the organisation of afferents from the three branches of the trigeminal nerve and from the lingual branch of the hypoglossal nerve...
May 24, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28542792/on-the-complexity-of-clinical-and-molecular-bases-of-neurodegeneration-with-brain-iron-accumulation
#19
REVIEW
Cristina Tello, Alejandra Darling, Vincenzo Lupo, Belén Pérez-Dueñas, Carmen Espinós
Neurodegeneration with brain iron accumulation (NBIA) are a group of inherited heterogeneous neurodegenerative rare disorders. These patients present with dystonia, spasticity, parkinsonism and neuropsychiatric disturbances, along with brain MRI evidence of iron accumulation. In sum, they are devastating disorders and to date, there is no specific treatment. Ten NBIA genes are accepted: PANK2, PLA2G6, C19orf12, COASY, FA2H, ATP13A2, WDR45, FTL, CP, and DCAF17, and. Nonetheless, a relevant percentage of patients remain without genetic diagnosis, suggesting that other novel NBIA genes remain to be discovered...
May 23, 2017: Clinical Genetics
https://www.readbyqxmd.com/read/28542727/tics-in-tacs-a-step-into-an-avalanche-systematic-literature-review-and-conclusions
#20
Christian Wöber
BACKGROUND: Trigeminal autonomic cephalalgias (TACs) comprise cluster headache, paroxysmal hemicrania, short-lasting unilateral neuralgiform headache attacks, and hemicrania continua. In some cases, trigeminal neuralgia (TN, "tic douloureux") or TN-like pain may co-occur with TACs. AIM: This article will review the co-occurrence and overlap of TACs and tics in order to contribute to a better understanding of the issue and an improved management of the patients. METHODS: For performing a systematic literature review Pubmed was searched using a total of ten terms...
May 19, 2017: Headache
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