3,942 results match your criteria Austral Journal Of Veterinary Sciences[Journal]


Microbial plankton configuration in the epipelagic realm from the Beagle Channel to the Burdwood Bank, a Marine Protected Area in Sub-Antarctic waters.

PLoS One 2020 27;15(5):e0233156. Epub 2020 May 27.

INQUISUR (UNS-CONICET) Departamento de Química, Universidad Nacional del Sur UNS, Bahía Blanca, Argentina.

Marine microbial plankton hold high structural and functional diversity, however, high-resolution data are lacking in a large part of the Global Ocean, such as in subpolar areas of the SW Atlantic. The Burdwood Bank (BB) is a submerged plateau (average depth 100 m) that constitutes the westernmost segment of the North Scotia Ridge (54°-55°S; 56°-62°W). The BB hosts rich benthic biodiversity in low chlorophyll waters of the southern Patagonian Shelf, Argentina, declared Namuncurá Marine Protected Area (NMPA) in 2013. Read More

View Article

Download full-text PDF

Source
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0233156PLOS

Evolutionary analyses reveal independent origins of gene repertoires and structural motifs associated to fast inactivation in calcium-selective TRPV channels.

Sci Rep 2020 May 26;10(1):8684. Epub 2020 May 26.

Millennium Nucleus of Ion Channels-Associated Diseases (MiNICAD), Valdivia, Chile.

Essential for calcium homeostasis, TRPV5 and TRPV6 are calcium-selective channels belonging to the transient receptor potential (TRP) gene family. In this study, we investigated the evolutionary history of these channels to add an evolutionary context to the already available physiological information. Phylogenetic analyses revealed that paralogs found in mammals, sauropsids, amphibians, and chondrichthyes, are the product of independent duplication events in the ancestor of each group. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41598-020-65679-6DOI Listing

Patterns in research and data sharing for the study of form and function in caviomorph rodents.

J Mammal 2020 May 15;101(2):604-612. Epub 2020 Feb 15.

Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Campus Isla Teja, Valdivia CP, Chile.

The combination of morphometrics, phylogenetic comparative methods, and open data sets has renewed interest in relating morphology to adaptation and ecological opportunities. Focusing on the Caviomorpha, a well-studied mammalian group, we evaluated patterns in research and data sharing in studies relating form and function. Caviomorpha encompasses a radiation of rodents that is diverse both taxonomically and ecologically. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1093/jmammal/gyaa002DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7236905PMC

A MISSING LINK BETWEEN DEPRESSION MODELS: FORCED SWIMMING TEST, HELPLESSNESS AND PASSIVE COPING IN GENETICALLY HETEROGENEOUS NIH-HS RATS.

Behav Processes 2020 May 24:104142. Epub 2020 May 24.

Medical Psychology Unit, Department of Psychiatry and Forensic Medicine, Institute of Neurosciences, School of Medicine, Universidad Autónoma de Barcelona, 08193, Bellaterra, Barcelona, Spain.

The forced swimming test (FST) and helplessness reactions at two-way active escape/avoidance task are used in the study of depressive-like symptoms and antidepressant treatments in rodents. In both tests/tasks the animals are submitted to stressful situations, known to induce several responses that have been considered as parallels of some symptoms of the human depressive disorder. However, there is a lack of experimental evidence supporting associations between the behavioral responses displayed in both behavioral procedures by outbred rats. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.beproc.2020.104142DOI Listing

Trends in Perinatal Practices and Neonatal Outcomes of VLBW Infants during a 16-year Period at NEOCOSUR Centers.

J Pediatr 2020 May 23. Epub 2020 May 23.

Departamento de Neonatologia, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago de Chile, Chile. Electronic address:

Objective: To describe trends in mortality, major morbidity and perinatal care practices of VLBW infants born at Neocosur Neonatal Network centers from Jan 1 2001 through Dec 31 2016.

Study Design: Retrospective analysis of prospectively collected data from all inborn infants with birthweight (BW) 500-1500 g and 23 - 35 weeks gestation.

Results: We examined data for 13,987 VLBW infants with mean BW 1,081±281 g and GA 28. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jpeds.2020.05.040DOI Listing

Volatile Compound Screening Using HS-SPME-GC/MS on Strains under Low-Temperature Pilsner Wort Fermentation.

Microorganisms 2020 May 18;8(5). Epub 2020 May 18.

Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, 9160000 Santiago, Chile.

The recent isolation of the yeast has opened new avenues in the brewing industry. Recent studies characterized the production of volatile compounds in a handful set of isolates, utilizing a limited set of internal standards, representing insufficient evidence into the ability of the species to produce new and diverse aromas in beer. Using Headspace solid-phase microextraction followed by gas chromatography-mass spectrometry (HS-SPME-GC-MS), we characterized for the first time the production of volatile compounds in 10 wild strains under fermentative brewing conditions and compared them to a commercial lager yeast. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/microorganisms8050755DOI Listing

[Narrating the epidemic].

Medicina (B Aires) 2020 ;80(3):300-301

E-mail:

View Article

Download full-text PDF

Source
January 2020

Parasites in micromammal fecal pellets throughout the Late Holocene ("Cueva Peligro" paleontological site, Patagonia, Argentina).

Parasitol Int 2020 May 19:102147. Epub 2020 May 19.

Grupo de Investigación: Paleoparasitología, Instituto de Investigaciones en Producción, Sanidad y Ambiente (IIPROSAM), Facultad de Ciencias Exactas y Naturales, UNMdP-CONICET, Juan B Justo 2250, 7600 Mar del Plata, Buenos Aires, Argentina.

Parasite remains in micromammal fecal pellets collected from the paleontological site "Cueva Peligro" (CP 43°40'18"S, 66°24'52"W), Chubut Province, Argentina, were examined. The samples were obtained from two grids, dated between 1220 ± 70C yr B.P. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.parint.2020.102147DOI Listing

Close encounters - microplastic availability to pelagic amphipods in sub-antarctic and antarctic surface waters.

Environ Int 2020 May 18;140:105792. Epub 2020 May 18.

British Antarctic Survey, High Cross, Madingley Road, Cambridge CB30ET, United Kingdom.

This study investigated the distribution of plastic debris from the Atlantic portion of the Sub-Antarctic to the Antarctic Peninsula. This region is home to some of the highest concentrations of zooplankton biomass but is also threatened by increasing shipping traffic from fishing and the growing tourism market. Samples were collected using a surface-towed neuston net during the Austral summer 2018, aboard the RRS James Clark Ross. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.envint.2020.105792DOI Listing

In memoriam Kanti D. Bhoola (1930-2019).

Biol Chem 2020 May 1. Epub 2020 May 1.

Universität Frankfurt, Frankfurt, Germany.

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1515/hsz-2020-0183DOI Listing

Antarctic petrels 'on the ice rocks': wintering strategy of an Antarctic seabird.

R Soc Open Sci 2020 Apr 1;7(4):191429. Epub 2020 Apr 1.

Norwegian Polar Institute, Fram Centre, 9296 Tromsø, Norway.

There is a paucity of information on the foraging ecology, especially individual use of sea-ice features and icebergs, over the non-breeding season in many seabird species. Using geolocators and stable isotopes, we defined the movements, distribution and diet of adult Antarctic petrels from the largest known breeding colony, the inland Svarthamaren, Antarctica. More specifically, we examined how sea-ice concentration and free-drifting icebergs affect the distribution of Antarctic petrels. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1098/rsos.191429DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7211841PMC

Better off alone? Compared performance of monoclonal and polyclonal stands of a cultivated red alga growth.

Evol Appl 2020 May 22;13(5):905-917. Epub 2020 Jan 22.

CNRS Sorbonne Université UMI 3614 Evolutionary Biology and Ecology of Algae Pontificia Universidad Católica de Chile Universidad Austral de Chile Roscoff cedex France.

The objective of this study was to test, using a field experiment, the effect of genotypic diversity on productivity of farmed populations (Ancud and Chaica, Chile) of the domesticated red alga (formerly known as ), a species considered as economically important in Chile. Monoclonal and polyclonal (4 and 8 genotypes) subplots were outplanted into the mid intertidal in Metri Bay (Puerto Montt, Chile) during summer, a season in which face higher temperatures (>18°C) and low nitrogen availability (<4.00 μmol). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/eva.12908DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7232761PMC

Free Fatty Acid Receptor 1 Signaling Contributes to Migration, MMP-9 Activity, and Expression of IL-8 Induced by Linoleic Acid in HaCaT Cells.

Front Pharmacol 2020 5;11:595. Epub 2020 May 5.

Laboratory of Molecular Pharmacology, Faculty of Veterinary Science, Institute of Pharmacology, Universidad Austral de Chile, Valdivia, Chile.

Keratinocytes and neutrophils are the main cellular components in wound healing during re-epithelization and inflammation. Free fatty acids such as linoleic acid (LA) present beneficial properties for wound healing by modulating the inflammatory response. LA is a natural ligand of free fatty acids receptor 1 (FFA1), a G protein-coupled receptor (GPCR), able to modulate inflammatory process; however, the role of FFA1 in keratinocytes and wound healing remains poorly understood. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3389/fphar.2020.00595DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7216565PMC

Coping with Pleistocene climatic fluctuations: demographic responses in remote endemic reef fishes.

Mol Ecol 2020 May 19. Epub 2020 May 19.

Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile.

Elucidating demographic history during the settlement of ecological communities is crucial for properly inferring the mechanisms that shape patterns of species diversity and their persistence through time. Here, we used genomic data and coalescent-based approaches to elucidate for the first time the demographic dynamics associated with the settlement by endemic reef fish fauna of one of the most remote peripheral islands of the Pacific Ocean, Rapa Nui (Easter Island). We compared the demographic history of nine endemic species in order to explore their demographic responses to Pleistocene climatic fluctuations. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1111/mec.15478DOI Listing

Morphological, genotypic and metabolomic signatures confirm interfamilial hybridization between the ubiquitous kelps Macrocystis (Arthrothamnaceae) and Lessonia (Lessoniaceae).

Sci Rep 2020 May 19;10(1):8279. Epub 2020 May 19.

School of Biological Sciences, University of Aberdeen, Cruickshank Building, St Machar Drive, Aberdeen, AB24 3UU, Scotland, UK.

Macrocystis pyrifera and Lessonia spicata are economically and ecologically relevant brown seaweeds that recently have been classified as members of two separated families within Laminariales (kelps). Here we describe for the first time the Macrocystis pyrifera x Lessonia spicata hybridization in the wild (Chiloe Island, Southeastern Pacific), where populations of the two parents exist sympatrically. Externally, this hybrid exhibited typical features of its parents M. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41598-020-65137-3DOI Listing

The liver in times of COVID-19: What hepatologists should know.

Ann Hepatol 2020 May 18. Epub 2020 May 18.

Latin American Liver Research, Educational and Awareness Network (LALREAN) Pilar, Provincia de Buenos Aires Argentina, Argentina.

The ongoing pandemic of coronavirus disease 2019 (COVID-19) pandemic poses a serious threat to healthcare systems globally. Information regarding to the how the infection affects the liver and relevance of pre-existing liver disease as a risk factor for acquiring the infection or having a severe disease are still scarce. Also, considerations to be considered in liver transplant patients or those having hepatocellular carcinoma or are under immunosuppressive therapy are being matter of analysis as information is being generated. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.aohep.2020.05.001DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7233236PMC

Transcriptional Activity and Protein Levels of Horizontally Acquired Genes in Yeast Reveal Hallmarks of Adaptation to Fermentative Environments.

Front Genet 2020 30;11:293. Epub 2020 Apr 30.

Centro de Estudios en Ciencia y Tecnología de los Alimentos (CECTA), Universidad de Santiago de Chile (USACH), Santiago, Chile.

In the past decade, the sequencing of large cohorts of strains has revealed a landscape of genomic regions acquired by Horizontal Gene Transfer (HGT). The genes acquired by HGT play important roles in yeast adaptation to the fermentation process, improving nitrogen and carbon source utilization. However, the functional characterization of these genes at the molecular level has been poorly attended. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3389/fgene.2020.00293DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7212421PMC

Predicting habitat use by the Argentine hake Merluccius hubbsi in a warmer world: inferences from the Middle Holocene.

Oecologia 2020 May 18. Epub 2020 May 18.

Department of Evolutionary Biology, Ecology and Environmental Science, Biodiversity Research Institute (IRBio), University of Barcelona, Barcelona, Spain.

Fish skeletal remains recovered from two archaeological sites dated in the Middle Holocene of Tierra del Fuego (Argentina) were analysed to describe habitat use patterns by hake in the past and predict changes in a warmer world. Mitochondrial DNA was successfully extracted and amplified from 42 out of 45 first vertebra from ancient hake and phylogenetic analysis assigned all haplotypes to Argentine hake (Merluccius hubbsi). According to osteometry, the Argentine hake recovered from the archaeological site were likely adults ranging 37. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1007/s00442-020-04667-zDOI Listing

Effect of Two Nutritional Strategies to Balance Energy and Protein Supply in Fattening Heifers on Performance, Ruminal Metabolism, and Carcass Characteristics.

Animals (Basel) 2020 May 14;10(5). Epub 2020 May 14.

Instituto de Producción Animal, Universidad Austral de Chile, Valdivia-Chile, Valdivia 5090000, Chile.

Latin America is an important contributor to the worldwide beef business, but in general, there are limited studies considering strategies to reduce nitrogen contamination in their production systems. The study's goal was to assess the effect of two nutritional strategies to balance energy and protein supply in fattening heifers on performance, ruminal metabolism, and carcass characteristics. A total of 24 crossbred heifers (initial body weight 'BW 'of 372 ± 36 kg) were used to create two blocks (based on live weight) of two pens each, that were equipped with individual feeders. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/ani10050852DOI Listing

Spatio-temporal changes and prediction of Amery ice shelf, east Antarctica: A remote sensing and statistics-based approach.

J Environ Manage 2020 Aug 1;267:110648. Epub 2020 May 1.

National Centre for Polar and Ocean Research, Ministry of Earth Sciences (Govt. of India), Goa, India.

The Amery ice shelf (AIS) dynamics and mass balance play key role to decipher changes in the global climate scenario. The spatio-temporal changes in morphology of the AIS were studied into a number of transects at 5 km uniform intervals using multi-dated Moderate Resolution Imaging Spectro-radiometer (MODIS) satellite data (2001-2016) of the austral summer months (January-March). Past ice shelf extents have been reconstructed and future ice shelf extents were estimated for 5- and 10-year time periods. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jenvman.2020.110648DOI Listing
August 2020
2.723 Impact Factor

Spanish multicenter real - life registry of retrievable vena cava filters (REFiVeC).

CVIR Endovasc 2020 May 18;3(1):26. Epub 2020 May 18.

Hospital Ramón y Cajal and Universidad de Alcalá (IRYCIS), Madrid, Spain.

Background: The treatment of venous thromboembolic disease the treatment of choice is systemic anticoagulation. However, the interruption of the inferior vena cava with filters has been recommended when anticoagulation fails or there is a contraindication. Due to the rising inferior vena cava filter (IVCF) complications, physicians are encouraged to retrieve them when there is no longer recommended. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s42155-020-00114-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7231811PMC

A Latin American survey on demographic aspects of hospitalized, decompensated cirrhotic patients and the resources for their management.

Ann Hepatol 2020 Apr 23. Epub 2020 Apr 23.

Gastroenterology Department, Hospital de la Samaritana, Bogotá, Colombia.

Introduction & Objectives: Liver cirrhosis is a major cause of mortality worldwide. Adequate diagnosis and treatment of decompensating events requires of both medical skills and updated technical resources. The objectives of this study were to search the demographic profile of hospitalized cirrhotic patients in a group of Latin American hospitals and the availability of expertise/facilities for the diagnosis and therapy of decompensation episodes. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.aohep.2020.03.007DOI Listing

Organ Culture and Grafting of Choroid Plexus into the Ventricular CSF of Normal and Hydrocephalic HTx Rats.

J Neuropathol Exp Neurol 2020 Jun;79(6):626-640

Instituto de Anatomía, Histología y Patología.

Choroid plexus (CP) may aid brain development and repair by secreting growth factors and neurotrophins for CSF streaming to ventricular and subventricular zones. Disrupted ventricular/subventricular zone progenitors and stem cells lead to CNS maldevelopment. Exploring models, we organ cultured the CP and transplanted fresh CP into a lateral ventricle of postnatal hydrocephalic (hyHTx) and nonhydrocephalic (nHTx) rats. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1093/jnen/nlaa028DOI Listing

Inter-annual decrease in pulse rate and peak frequency of Southeast Pacific blue whale song types.

Sci Rep 2020 May 15;10(1):8121. Epub 2020 May 15.

Univ. Toulon, Aix Marseille Univ., CNRS, LIS, DYNI team, SABIOD, Marseille, France.

A decrease in the frequency of two southeast Pacific blue whale song types was examined over decades, using acoustic data from several different sources in the eastern Pacific Ocean ranging between the Equator and Chilean Patagonia. The pulse rate of the song units as well as their peak frequency were measured using two different methods (summed auto-correlation and Fourier transform). The sources of error associated with each measurement were assessed. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1038/s41598-020-64613-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7229211PMC

Biochemical and Genomic Characterization of the Cypermethrin-Degrading and Biosurfactant-Producing Bacterial Strains Isolated from Marine Sediments of the Chilean Northern Patagonia.

Mar Drugs 2020 May 13;18(5). Epub 2020 May 13.

Laboratorio de Bioinformática y Expresión Génica, Instituto de Nutrición y Tecnología de los Alimentos, Universidad de Chile, Santiago 7810000, Chile.

Pesticides cause severe environmental damage to marine ecosystems. In the last ten years, cypermethrin has been extensively used as an antiparasitic pesticide in the salmon farming industry located in Northern Patagonia. The objective of this study was the biochemical and genomic characterization of cypermethrin-degrading and biosurfactant-producing bacterial strains isolated from cypermethrin-contaminated marine sediment samples collected in southern Chile (MS). Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/md18050252DOI Listing

Seasonally Driven Sexual and Asexual Reproduction in Temperate Species.

Biol Bull 2020 Apr 21;238(2):89-105. Epub 2020 Apr 21.

Marine organisms that rely on environmental cues for reproduction are likely to experience shifts in reproductive phenology and output due to global climate change. To assess the role that the environment may play in the reproductive timing for temperate sponges, this study examined sexual and asexual reproduction in New Zealand sponge species ( and the complex) and correlated reproductive output with temperature, chlorophyll- concentration, and rainfall. Histological analyses of sponges collected monthly (from February 2015 to February 2017) revealed that these sponges are oviparous and gonochoristic and that they sexually reproduce annually during the austral summer. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1086/708624DOI Listing

Biotope and biocenosis of cryoconite hole ecosystems on Ecology Glacier in the maritime Antarctic.

Sci Total Environ 2020 Jul 24;724:138112. Epub 2020 Mar 24.

Department of Animal Taxonomy and Ecology, Adam Mickiewicz University, Uniwersytetu Poznańskiego 6, 61-614 Poznań, Poland. Electronic address:

Despite recent great interest in glacier ecosystems in the continental Antarctic, little is known about their maritime counterparts. Our study presents descriptive data on cryoconite sediments and cryoconite holes on Ecology Glacier (King George Island) to accomplish three main objectives: (a) to identify main eukaryotic (algae, invertebrates) and prokaryotic (cyanobacteria) components of microbial communities; (b) to provide a "baseline" of community composition, organic matter and artificial contamination; and (c) to identify key abiotic factors that might be important in community assembly. Cryoconite holes were sampled along an altitudinal gradient of Ecology Glacier in January, mid Austral Summer 2017. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.scitotenv.2020.138112DOI Listing

Micro- and mesozooplankton successions in an Antarctic coastal environment during a warm year.

PLoS One 2020 14;15(5):e0232614. Epub 2020 May 14.

Instituto Argentino de Oceanografía (IADO-CONICET), Universidad Nacional del Sur (UNS), Bahía Blanca, Argentina.

The rapid increase in atmospheric temperature detected in the last decades in the Western Antarctic Peninsula was accompanied by a strong glacier retreat and an increase in production of melting water, as well as changes in the sea-ice dynamic. The objective of this study was to analyze the succession of micro- and mesozooplankton during a warm annual cycle (December 2010-December 2011) in an Antarctic coastal environment (Potter Cove). The biomass of zooplankton body size classes was used to predict predator-prey size relationships (i. Read More

View Article

Download full-text PDF

Source
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0232614PLOS

KAP1 Is a Chromatin Reader that Couples Steps of RNA Polymerase II Transcription to Sustain Oncogenic Programs.

Mol Cell 2020 May 5. Epub 2020 May 5.

Department of Microbiology, The University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. Electronic address:

Precise control of the RNA polymerase II (RNA Pol II) cycle, including pausing and pause release, maintains transcriptional homeostasis and organismal functions. Despite previous work to understand individual transcription steps, we reveal a mechanism that integrates RNA Pol II cycle transitions. Surprisingly, KAP1/TRIM28 uses a previously uncharacterized chromatin reader cassette to bind hypo-acetylated histone 4 tails at promoters, guaranteeing continuous progression of RNA Pol II entry to and exit from the pause state. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.molcel.2020.04.024DOI Listing

Effect of music at 432 Hz and 440 Hz on dental anxiety and salivary cortisol levels in patients undergoing tooth extraction: a randomized clinical trial.

J Appl Oral Sci 2020 11;28:e20190601. Epub 2020 May 11.

Escuela de Odontología, Facultad de Medicina, Universidad Austral de Chile, Valdivia, Chile.

Objective The aim of this study was to compare the effects of music at 432 Hz, 440 Hz, and no music on the clinical perception of anxiety and salivary cortisol levels in patients undergoing tooth extraction. Methodology A parallel-group randomized clinical trial was conducted. Forty-two patients (average age: 23. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1590/1678-7757-2019-0601DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7213780PMC

Ontogenetic changes in energetic reserves, digestive enzymes, amino acid and energy content of Lithodes santolla (Anomura: Lithodidae): Baseline for culture.

PLoS One 2020 13;15(5):e0232880. Epub 2020 May 13.

Centro Austral de Investigaciones Científicas (CADIC), CONICET, Ushuaia, Argentina.

The southern king crab (SKC) Lithodes santolla is an important commercial species in southern South America. Fishing pressure has caused the deterioration of its stocks. Currently, culture techniques are being developed for producing SKC juveniles to enhance the natural population and to recover the fishing stock. Read More

View Article

Download full-text PDF

Source
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0232880PLOS

Living on the Edge: Physiological and Kinetic Trade-Offs Shape Thermal Tolerance in Intertidal Crabs From Tropical to Sub-Antarctic South America.

Front Physiol 2020 24;11:312. Epub 2020 Apr 24.

Departamento de Biologia, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, Brazil.

Temperature is an important abiotic factor that drives the evolution of ectotherms owing to its pervasive effects at all levels of organization. Although a species' thermal tolerance is environmentally driven within a spatial cline, it may be constrained over time due to differential phylogenetic inheritance. At the limits of thermal tolerance, hemolymph oxygen is reduced and lactate formation is increased due to mismatch between oxygen supply and demand; imbalance between enzyme flexibility/stability also impairs the ability to generate energy. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3389/fphys.2020.00312DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7194293PMC

Sequencing of systemic treatment for hepatocellular carcinoma: Second line competitors.

World J Gastroenterol 2020 Apr;26(16):1888-1900

Division of Gastroenterology and Hepatology, CRC "A.M. e A. Migliavacca" Center for the Study of Liver Disease, University of Milan, Fondazione IRCCS Ca' Granda Maggiore Hospital, Milan 20121, Italy.

During the last decades, further knowledge of hepatocellular carcinoma (HCC) molecular mechanisms has led to development of effective systemic treatments including tyrosine kinase inhibitors (TKIs) and immunotherapy. In this review, we describe first and second line systemic treatment options for advanced HCC. Several trials have evaluated new drugs for the treatment of HCC patients: In first line, lenvatinib resulted non-inferior to sorafenib and it can be used as alternative, even in the lack of evidence for sequential treatment options in second line after lenvatinib. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3748/wjg.v26.i16.1888DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7201145PMC

Randomized Controlled Trial of Nonsynchronized Nasal Intermittent Positive Pressure Ventilation versus Nasal CPAP after Extubation of VLBW Infants.

Neonatology 2020 May 8:1-7. Epub 2020 May 8.

Departamento de Neonatología, Pontificia Universidad Católica de Chile, Santiago, Chile.

Background And Objectives: Nasal continuous positive airway pressure (NCPAP) is a useful method of respiratory support after extubation. However, some infants fail despite CPAP use and require reintubation. Some evidence suggests that synchronized nasal intermittent positive pressure ventilation (NIPPV) may decrease extubation failure in preterm infants. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1159/000506164DOI Listing

Functional response of fish assemblage to multiple stressors in a highly regulated Mediterranean river system.

Sci Total Environ 2020 Apr 30;730:138989. Epub 2020 Apr 30.

Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile; Departamento de Ecología, Facultad de Ciencias y Centro de Investigación en Biodiversidad y Ambientes Sustentables (CIBAS), Universidad Católica de la Santísima Concepción, Concepción, Chile.

Mediterranean rivers are characterised by strong environmental constrains and species-poor, highly endemic fish fauna. In Europe, these systems are exposed to multiple stressors due to extensive human activities. Studies on the effects of some stressors on riverine fish are available but complex responses of fish assemblages to interplay of flow alteration with physical habitat changes and invasive species have not been evaluated up to date. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.scitotenv.2020.138989DOI Listing

Efficacy of andrographolide in not active progressive multiple sclerosis: a prospective exploratory double-blind, parallel-group, randomized, placebo-controlled trial.

BMC Neurol 2020 May 7;20(1):173. Epub 2020 May 7.

Pharmacology and Morphophysiology, Faculty of Veterinary Sciences, Universidad Austral de Chile, Independencia, 613, Valdivia, Chile.

Background: Multiple sclerosis (MS) is a chronic immune mediated disease and the progressive phase appears to have significant neurodegenerative mechanisms. The classification of the course of progressive MS (PMS) has been re-organized into categories of active vs. not active inflammatory disease and the presence vs. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s12883-020-01745-wDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7203851PMC

Satellite derived offshore migratory movements of southern right whales (Eubalaena australis) from Australian and New Zealand wintering grounds.

PLoS One 2020 7;15(5):e0231577. Epub 2020 May 7.

Blue Planet Marine, Nelson, New Zealand.

Southern right whales (Eubalaena australis) migrate between Austral-winter calving and socialising grounds to offshore mid- to high latitude Austral-summer feeding grounds. In Australasia, winter calving grounds used by southern right whales extend from Western Australia across southern Australia to the New Zealand sub-Antarctic Islands. During the Austral-summer these whales are thought to migrate away from coastal waters to feed, but the location of these feeding grounds is only inferred from historical whaling data. Read More

View Article

Download full-text PDF

Source
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0231577PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7205476PMC

Physiological responses of wild zebra finches () to heatwaves.

J Exp Biol 2020 May 6. Epub 2020 May 6.

Department of Biological Sciences, Macquarie University, Sydney, New South Wales, Australia.

Desert birds inhabit hot, dry environments that are becoming hotter and drier as a consequence of climate change. Extreme weather such as heatwaves can cause mass-mortality events that may significantly impact populations and species. There are currently insufficient data concerning physiological plasticity to inform models of species' response to extreme events and develop mitigation strategies. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1242/jeb.225524DOI Listing

Isolation, Gastroprotective Effects and Untargeted Metabolomics Analysis of J. Remy (Solanaceae).

Foods 2020 May 3;9(5). Epub 2020 May 3.

Departamento de Ciencias Químicas, Universidad Andres Bello, Campus Viña del Mar, Quillota 980, Viña del Mar, 2531098 Valparaiso, Chile.

J. Remy (Solanaceae) is commonly used as an infusion in traditional medicine to treat stomach pain, meteorism, intestinal disorders, stomach ailments, and other severe problems including prostate cancer and stomach cancer. From the EtOAc extract of bark five known metabolites were isolated using chromatographic techniques. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3390/foods9050565DOI Listing

Bioclimatic Prosthesis: Experimental dataset for a low-cost Trombe wall to existing social housing refurbishment for an intermediate valley (Chillán) city in the south of Chile.

Data Brief 2020 Jun 20;30:105547. Epub 2020 Apr 20.

Department of Basic Sciences, University of Bio-Bio, Andrés Bello Avenue 720, Chillán, Chile.

This dataset is part of the article entitled "Design and experimental study of a low-cost prefab Trombe Wall to improve indoor temperatures in social housing in the Biobío Region in Chile" [1], [2]. The dataset represents the outcome of experimental measurements during a 1-year monitoring campaign to assess the performance of an adaptable and low-cost prefabricated Trombe Wall (TW) with a vertical water storage system. The experiments include periods with mobile insulation during winter nights and external shading during summer which were added to test their effect on the thermal performance. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.dib.2020.105547DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7195511PMC

High-Throughput Docking Using Quantum Mechanical Scoring.

Front Chem 2020 21;8:246. Epub 2020 Apr 21.

Computational Drug Design and Biomedical Informatics Laboratory, Translational Medicine Research Institute (IIMT), CONICET-Universidad Austral, Pilar, Argentina.

Today high-throughput docking is one of the most commonly used computational tools in drug lead discovery. While there has been an impressive methodological improvement in docking accuracy, docking scoring still remains an open challenge. Most docking programs are rooted in classical molecular mechanics. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.3389/fchem.2020.00246DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7186494PMC

Reduction of foot-and-mouth disease virus transmission in cattle vaccinated one or two weeks before challenge using a commercial polyvalent vaccine.

Vaccine X 2020 Aug 13;5:100063. Epub 2020 Apr 13.

Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Independencia 641, Valdivia, Chile.

Immediate vaccination of the most susceptible and epidemiological relevant animals is a crucial part of control measures that facilitate virus elimination in case of entry of foot-and-mouth disease (FMD). The objective of this study was to evaluate the effect of cattle vaccination 7 and 14 days prior challenge using a vaccine commonly applied in systematic vaccination campaigns against transmission of FMD virus (FMDV). Transmission of FMDV was investigated in three groups of ten cattle each: one non-vaccinated group and two groups that were either vaccinated 7 days (-7/vaccinated group) or 14 days (-14/vaccinated group) before intranasal (IN) inoculation. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jvacx.2020.100063DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7190753PMC

Data: Inventory of trees in five fragments of temperate evergreen forest located on the eastern slope of Chile's coastal mountain range.

Data Brief 2020 Jun 18;30:105557. Epub 2020 Apr 18.

Departamento de Ciencias Biológicas y Biodiversidad, Universidad de Los Lagos, Avda. Fuchslocher 1305, Osorno, Chile.

The data set comes from a tree inventory conducted in an evergreen forest fragment (dominated by and ) and four fragments dominated by . The forests are located in an agroforestry matrix landscape of the Coastal Mountain Range of the Chilean Lake District. The data collection was carried out using line transect sampling, which was traced through the core of each fragment oriented towards its longest axis. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.dib.2020.105557DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7186488PMC

Trait Emotional Intelligence Questionnaire-Short Form: Brazilian Validation and Measurement Invariance between the United Kingdom and Latin-American Datasets.

J Pers Assess 2020 May 4:1-10. Epub 2020 May 4.

Department of Paediatric Dentistry, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil.

The present study aimed to evaluate the psychometric properties of the Brazilian adaptation of the (TEIQue-SF). In a sample of 512 participants, we tested model fit by bifactor Exploratory Structural Equation Modeling (ESEM), followed by measurement invariance testing against UK and Chilean datasets of the measure. The Big Five Mini-Markers, Satisfaction with Life Scale and Subjective Happiness Scale were also administered as external validation measures. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1080/00223891.2020.1758118DOI Listing

[Association between autonomic disorders and subclinical atherosclerosis].

Hipertens Riesgo Vasc 2020 Apr 30. Epub 2020 Apr 30.

Unidad de Hipertensión Arterial, Instituto Cardiovascular de Rosario Rosario (Santa Fe), Argentina.

Introduction And Objectives: Alterations of the sympathetic and parasympathetic nervous system have been proposed as precursors of the genesis and perpetuation of atherosclerosis for a long time. The objective of this study is to determine if there is an association between the presence of carotid atherosclerosis and the reduction in heart rate variability.

Methods: Using a prospective case-control design, the heart rate variability and the presence of carotid atherosclerosis was investigated in 54 patients, divided into 2groups according to the presence or absence of carotid atherosclerosis. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.hipert.2020.03.001DOI Listing

Assessing the effect of fire severity on sediment connectivity in central Chile.

Sci Total Environ 2020 Apr 25;728:139006. Epub 2020 Apr 25.

National Research Council, Research Institute for Geo-Hydrological Protection, Padova, Italy.

Chilean territory is recurrently affected by severe wildfires, which drastically reduce the forest cover and promote runoff, soil erosion and slope instabilities. To understand how the geomorphic system responds to wildfires in terms of sediment dynamics, the assessment of sediment connectivity, i.e. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.scitotenv.2020.139006DOI Listing

Human adipose-derived mesenchymal stem cell-conditioned medium ameliorates polyneuropathy and foot ulceration in diabetic BKS db/db mice.

Stem Cell Res Ther 2020 May 1;11(1):168. Epub 2020 May 1.

Center for Regenerative Medicine, School of Medicine Clínica Alemana-Universidad del Desarrollo, Av. Las Condes 12438, Lo Barnechea, Santiago, Chile.

Background: Diabetic polyneuropathy (DPN) is the most common and early developing complication of diabetes mellitus, and the key contributor for foot ulcers development, with no specific therapies available. Different studies have shown that mesenchymal stem cell (MSC) administration is able to ameliorate DPN; however, limited cell survival and safety reasons hinder its transfer from bench to bedside. MSCs secrete a broad range of antioxidant, neuroprotective, angiogenic, and immunomodulatory factors (known as conditioned medium), which are all decreased in the peripheral nerves of diabetic patients. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1186/s13287-020-01680-0DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7195803PMC

An Out-of-Patagonia migration explains the worldwide diversity and distribution of Saccharomyces eubayanus lineages.

PLoS Genet 2020 May 1;16(5):e1008777. Epub 2020 May 1.

Millennium Institute for Integrative Biology (iBio), Santiago, Chile.

Population-level sampling and whole-genome sequences of different individuals allow one to identify signatures of hybridization, gene flow and potential molecular mechanisms of environmental responses. Here, we report the isolation of 160 Saccharomyces eubayanus strains, the cryotolerant ancestor of lager yeast, from ten sampling sites in Patagonia along 2,000 km of Nothofagus forests. Frequency of S. Read More

View Article

Download full-text PDF

Source
http://dx.doi.org/10.1371/journal.pgen.1008777DOI Listing