4,219 results match your criteria Andean Geology[Journal]

Lifestyle school-based intervention to increase the proportion of adolescents free of components of the metabolic syndrome in an andean region of Peru.

Rev Peru Med Exp Salud Publica 2022 Jan-Mar;39(1):36-46. Epub 2022 Jun 24.

Facultad de Medicina Humana, Universidad de Piura. Lima, Perú.

Objective.: To estimate the impact of a school-based nutritional and healthy lifestyle intervention to increase the proportions of adolescents free of components of the metabolic syndrome.

Materials And Methods. Read More

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Andean berry (Vaccinium meridionale Swartz) juice, in combination with Aspirin, displayed antiproliferative and pro-apoptotic mechanisms in vitro while exhibiting protective effects against AOM-induced colorectal cancer in vivo.

Food Res Int 2022 Jul 12;157:111244. Epub 2022 Apr 12.

Escuela de Nutrición y Dietética, Universidad de Antioquia, Medellín, Colombia.

Colorectal cancer (CRC) can be either prevented or alleviated using conventional drugs combined with natural treatments. Andean berry (AB, Vaccinium meridionale Sw.) is an underutilized berry with promising anti-inflammatory and antiproliferative effects that could be used to alleviate CRC markers in combination with Aspirin, a well-known CRC preventive drug. Read More

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Diversity and Agronomic Performance of Germplasm in European and Andean Environments.

Front Plant Sci 2022 10;13:903661. Epub 2022 Jun 10.

Wageningen University and Research Plant Breeding, Wageningen University, Wageningen, Netherlands.

The introduction of (Andean lupin) in Europe will provide a new source of protein and oil for plant-based diets and biomass for bio-based products, while contributing to the improvement of marginal soils. This study evaluates for the first time the phenotypic variability of a large panel of accessions both in their native environment and over two cropping conditions in Europe (winter crop in the Mediterranean region and summer crop in North-Central Europe), paving the way for the selection of accessions adapted to specific environments. The panel of 225 accessions included both germplasm pools from the Andean region and breeding lines from Europe. Read More

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Andean crops: kañiwa and tarwi flours used for the development of vegan gluten-free muffins.

J Sci Food Agric 2022 Jun 26. Epub 2022 Jun 26.

Centro de Investigación e Innovación en Productos Derivados de Cultivos Andinos CIINCA, Universidad Nacional Agraria La Molina, Avenida La Molina s/n, Lima 12, Perú.

Background: The flours of Andean crops tarwi (Lupinus mutabilis) and kañiwa (Chenopodium pallidicaule Aellen) present an excellent nutritional profile to be included in vegan gluten-free muffin formulations. In this study, the proximal composition and techno-functional properties of tarwi and kañiwa flours, and the technological quality of batters and muffins (potato starch-based) formulated with 50% of these flours were evaluated.

Results: Andean flours presented a high protein, fiber, and fat content, as well as high water and oil absorption. Read More

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Optimization and Characterization of a Novel Exopolysaccharide from CamB6 for Food Applications.

Biomolecules 2022 Jun 15;12(6). Epub 2022 Jun 15.

Unidad de Desarrollo Tecnológico (UDT), Universidad de Concepción, Av. Cordillera 2634, Parque Industrial Coronel, Coronel 3349001, Chile.

Extremophilic microorganisms often produce novel bioactive compounds to survive under harsh environmental conditions. Exopolysaccharides (EPSs), a constitutive part of bacterial biofilm, are functional biopolymers that act as a protecting sheath to the extremophilic bacteria and are of high industrial value. In this study, we elucidate a new EPS produced by thermophilic CamB6 from a slightly acidic (pH 5. Read More

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Cardioprotective Antioxidant and Anti-Inflammatory Mechanisms Induced by Intermittent Hypobaric Hypoxia.

Antioxidants (Basel) 2022 May 25;11(6). Epub 2022 May 25.

Departamento de Medicina Interna Oriente, Facultad de Medicina, Universidad de Chile, Santiago 7500922, Chile.

More than 80 million people live and work (in a chronic or intermittent form) above 2500 masl, and 35 million live in the Andean Mountains. Furthermore, in Chile, it is estimated that 100,000 people work in high-altitude shifts, where stays in the lowlands are interspersed with working visits in the highlands. Acute exposure to high altitude has been shown to induce oxidative stress in healthy human lowlanders due to increased free radical formation and decreased antioxidant capacity. Read More

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[Microbial contaminants in bottled craft beer of Andean Patagonia, Argentina].

Rev Argent Microbiol 2022 Jun 20. Epub 2022 Jun 20.

Centro de Referencia en Levaduras y Tecnología Cervecera (CRELTEC), Instituto Andino Patagónico de Tecnologías Biológicas y Geoambientales (IPATEC) - CONICET / Universidad Nacional del Comahue, Bariloche, Río Negro, Argentina. Electronic address:

The brewing activity in Andean Patagonia plays a very important role in the region's economy, being microbial contamination one of the main problems in terms of quality. The presence of contaminant bacteria and wild yeasts in beer generate microbiological, physical and chemical changes that impact on its sensory attributes. However, few breweries establish criteria and policies to guarantee the quality of their products in a microbiological sense. Read More

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Trends and Limits for Quinoa Production and Promotion in Pakistan.

Plants (Basel) 2022 Jun 18;11(12). Epub 2022 Jun 18.

CIRAD, UMR SENS, 34398 Montpellier, France.

Quinoa is known as a super food due to its extraordinary nutritional qualities and has the potential to ensure future global food and nutritional security. As a model plant with halophytic behavior, quinoa has potential to meet the challenges of climate change and salinization due to its capabilities for survival in harsh climatic conditions. The quinoa crop has received worldwide attention due to its adoption and production expanded in countries out of the native Andean region. Read More

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Polyphenols and Flavonoids Composition, Anti-Inflammatory and Antioxidant Properties of Andean Extracts.

Plants (Basel) 2022 Jun 12;11(12). Epub 2022 Jun 12.

Department of Research, Laboratory of Functional Foods, Department of Science and Engineering in Food and Biotechnology, Campus Huachi, Technical University of Ambato, Av. Los Chasquis y Río Payamino, Ambato 1801334, Ecuador.

This study examined the leaves of to obtain extracts of (EBM) and to determine the total flavonoid content (TFC) and the total polyphenol content (TPC). The main objective of this work was to quantify TPC and TFC of extracts of from Ecuador and evaluate its antioxidant and anti-inflammatory activities and inhibition of lipid peroxidation. The extraction method was optimized with solvents, ethanol, and methanol, at temperatures of 30-60 °C and extraction times of 5-20 min. Read More

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Cinaciguat (BAY-582667) Modifies Cardiopulmonary and Systemic Circulation in Chronically Hypoxic and Pulmonary Hypertensive Neonatal Lambs in the Alto Andino.

Front Physiol 2022 6;13:864010. Epub 2022 Jun 6.

Laboratorio de Fisiología y Fisiopatología del Desarrollo, Programa de Fisiopatología, ICBM, Facultad de Medicina, Universidad de Chile, Santiago, Chile.

Neonatal pulmonary hypertension (NPHT) is produced by sustained pulmonary vasoconstriction and increased vascular remodeling. Soluble guanylyl cyclase (sGC) participates in signaling pathways that induce vascular vasodilation and reduce vascular remodeling. However, when sGC is oxidized and/or loses its heme group, it does not respond to nitric oxide (NO), losing its vasodilating effects. Read More

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Andean Women's Persistence Amidst Racialized Gendered Impoverishment, Capitalist Incursions, and Post-conflict Hauntings.

Front Psychol 2022 2;13:908673. Epub 2022 Jun 2.

Lynch School of Education and Human Development, Center for Human Rights and International Justice, Boston College, Chestnut Hill, MA, United States.

Throughout the last four decades, Andean women from the highland communities of Peru have been significantly affected by ongoing neoliberal capitalist development and patriarchal structures. These intersecting violence(s) took on more horrific dimensions during the Peruvian armed conflict (1980-2000) and have contributed to multiple psychosocial sequelae that linger in the daily lives on these communities as "ghostly matters." Seeking to face these experiences in a context of ongoing material impoverishment, Andean women from highland communities have initiated multiple associations or economic collective projects. Read More

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Incomplete lineage sorting and reticulate evolution mask species relationships in Brunelliaceae, an Andean family with rapid, recent diversification.

Am J Bot 2022 Jun 16. Epub 2022 Jun 16.

School of Biological Sciences, Southern Illinois University Carbondale, 1125 Lincoln Dr., Carbondale, IL, 62901-6509, USA.

Premise: To date, phylogenetic relationships within the monogeneric Brunelliaceae have been based on morphological evidence, which does not provide sufficient phylogenetic resolution. Here we use target-enriched nuclear data to improve our understanding of phylogenetic relationships in the family.

Methods: We used the Angiosperms353 toolkit for targeted recovery of exonic regions and supercontigs (exons + introns) from low copy nuclear genes from 53 of 70 species in Brunellia, and several outgroup taxa. Read More

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Geospatial analysis of the associations between environmental contamination with livestock feces and children with chronic fascioliasis in the Anta province of Cusco, Peru.

PLoS Negl Trop Dis 2022 Jun 16;16(6):e0010499. Epub 2022 Jun 16.

Division of Infectious Diseases, Department of Medicine, University of Texas Medical Branch, Galveston, Texas, United States of America.

Fasciola hepatica is a neglected parasitic infection with significant human health and livestock industry impact. The Andean Altiplano harbors an estimated 50% of the Fasciola's world infection burden. There is scarce data regarding the spatial associations between different Fasciola hosts. Read More

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A westerly wind dominated Puna Plateau during deposition of upper Pleistocene loessic sediments in the subtropical Andes, South America.

Nat Commun 2022 Jun 14;13(1):3411. Epub 2022 Jun 14.

Department of Environmental Engineering and Earth Sciences, Clemson University, Clemson, SC, 29634, USA.

The Tafí del Valle depression (~27° S) in the eastern Andes of Argentina provides a record of late Pleistocene dust deposition in the subtropics of South America. We present large-n U-Pb geochronology data for detrital zircons from upper Pleistocene loess-paleosol deposits. When compared to regional data, the age spectra from the Tafí del Valle samples are most like the southern Puna Plateau, supporting derivation largely from the west and northwest. Read More

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Insights for crystal mush storage utilizing mafic enclaves from the 2011-12 Cordón Caulle eruption.

Sci Rep 2022 Jun 13;12(1):9734. Epub 2022 Jun 13.

Servicio Nacional de Geología y Minería (SERNAGEOMIN), Santiago, Chile.

Two distinct types of rare crystal-rich mafic enclaves have been identified in the rhyolite lava flow from the 2011-12 Cordón Caulle eruption (Southern Andean Volcanic Zone, SVZ). The majority of mafic enclaves are coarsely crystalline with interlocking olivine-clinopyroxene-plagioclase textures and irregular shaped vesicles filling the crystal framework. These enclaves are interpreted as pieces of crystal-rich magma mush underlying a crystal-poor rhyolitic magma body that has fed recent silicic eruptions at Cordón Caulle. Read More

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Modelling control strategies against classical swine fever: Influence of traders and markets using static and temporal networks in Ecuador.

Prev Vet Med 2022 May 31;205:105683. Epub 2022 May 31.

Preventive Veterinary Medicine Department, School of Veterinary Medicine and Animal Science, University of São Paulo, SP, Brazil.

Pig farming in Ecuador represents an important economic and cultural sector, challenged by classical swine fever (CSF). Recently, the National Veterinary Service (NVS), has dedicated its efforts to control the disease by implementing pig identification, mandatory vaccination against CSF and movement control. Our objective was to characterise pig premises according to risk criteria, to model the effect of movement restriction strategies and to consider the temporal evolution of the network. Read More

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Bioprospecting for electrochemically active perchlorate-reducing microorganisms.

Bioelectrochemistry 2022 Jun 2;147:108171. Epub 2022 Jun 2.

Departamento de Ingeniería Hidráulica y Ambiental, Pontificia Universidad Católica de Chile, Av. Vicuña, Mackenna 4860, Santiago, Chile; Centro de Desarrollo Urbano Sustentable (CEDEUS). Electronic address:

This study evaluated the electrochemical capacity of four perchlorate-reducing microorganisms (PRMs) isolated from an Altiplanic Andean watershed naturally pressured with perchlorate. Three-electrode electrochemical cells were used to test the electrochemical activity of the obtained isolates. Electrochemical evaluation (i. Read More

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Synthesis of Iron, Zinc, and Manganese Nanofertilizers, Using Andean Blueberry Extract, and Their Effect in the Growth of Cabbage and Lupin Plants.

Nanomaterials (Basel) 2022 Jun 4;12(11). Epub 2022 Jun 4.

Departamento de Ciencias de la Tierra y de la Construcción, Universidad de las Fuerzas Armadas ESPE, Av. Gral. Rumiñahui s/n, Sangolquí P.O. Box 171-5-231B, Ecuador.

The predominant aim of the current study was to synthesize the nanofertilizer nanoparticles ZnO_MnO-NPs and FeO_ZnO-NPs using Andean blueberry extract and determine the effect of NPs in the growth promotion of cabbage () and Andean lupin ( sweet) crops. The nanoparticles were analyzed by visible spectrophotometry, size distribution (DLS), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Solutions of nanoparticle concentrations were applied to cabbage, with solutions of 270 and 540 ppm of ZnO_MnO-NPs and 270 and 540 ppm of FeO_ZnO-NPs applied to Andean lupin. Read More

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Influence of Environmental Pollution and Living Conditions on Parasite Transmission among Indigenous Ecuadorians.

Int J Environ Res Public Health 2022 06 4;19(11). Epub 2022 Jun 4.

Grupo de Investigación "Parásitos y Salud", Departament de Farmàcia i Tecnologia Farmacèutica i Parasitologia, Facultat de Farmàcia, Universitat de València, Burjassot, 46010 Valencia, Spain.

The purpose of this study was to evaluate the influence of environmental pollution and the living conditions of indigenous Ecuadorians on the transmission of enteroparasites in an Andean agricultural area located at high altitude. Environmental pollution was recorded after observation in each community. The parasites were identified by microscopic sediment analysis using physiological saline solution from macerated arthropods, washed vegetables, and human stools, utilizing four coproparasitological techniques (direct examination, Kato-Katz, ether concentration, and Ziehl-Neelsen). Read More

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Preliminary Characterization of a Spray-Dried Hydrocolloid from a High Andean Algae ().

Foods 2022 Jun 1;11(11). Epub 2022 Jun 1.

Department of Agroecological Engineering and Rural Development, Universidad Nacional Micaela Bastidas, Abancay 03701, Peru.

The search for new natural sources of hydrocolloids with stabilizing, thickening, and good binding capacity, from raw materials that are environmentally friendly and that contribute to the circular economy is a challenge for the food industry. The aim of the study was the preliminary characterization of a spray-dried hydrocolloid from high Andean algae . Four ecotypes of algae from Peruvian high Andean lagoons located above 4000 m were considered. Read More

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Improving Nutritional and Health Benefits of Biscuits by Optimizing Formulations Based on Sprouted Pseudocereal Grains.

Foods 2022 May 24;11(11). Epub 2022 May 24.

Department of Technological Processes and Biotechnology, Institute of Food Science, Technology and Nutrition (ICTAN-CSIC), 28040 Madrid, Spain.

A mixture design (MD) was used to evaluate the effect of replacing wheat flour (WF) with sprouted cañihua ( Aellen), kiwicha ( L.), and quinoa ( Willd.) flours (SCF, SKF, and SQF, respectively) on the content of phytic acid (PA), γ-aminobutyric acid (GABA), total soluble phenolic compounds (TSPC), and antioxidant activity (AA) in biscuits. Read More

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Revision of the "celia clade" of Pseudodebis Forster, 1964, with Two New Species and Notes on Papilio phorcys Fabricius, 1793 (Lepidoptera: Nymphalidae: Satyrinae).

Neotrop Entomol 2022 Jun 8. Epub 2022 Jun 8.

McGuire Center for Lepidoptera and Biodiversity, Florida Museum of Natural History, Univ of Florida, Gainesville, FL, USA.

The species-level classification of the "celia clade" of the nymphalid butterfly genus Pseudodebis Forster, 1964, is revised as part of ongoing revisionary work on this genus. The "celia clade" contains three species, of which two, Pseudodebis darrenthroopi Nakahara & Willmott, n. sp. Read More

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Effect of partial substitution of wheat flour by quinoa ( Willd.) and tarwi ( Sweet) flours on dough and bread quality.

Food Sci Technol Int 2022 Jun 7:10820132221106332. Epub 2022 Jun 7.

CIINCA (Centro de Investigación e Innovación en Productos Derivados de Cultivos Andinos), Facultad de Industrias Alimentarias, 113018Universidad Nacional Agraria La Molina, Lima, Perú.

Bread is the main important food product worldwide. In this study, eleven bread formulations were developed by partial substitution of wheat flour with quinoa and tarwi flours, to evaluate the effect on the rheological and pasting properties of mixtures, as well as on the physicochemical and textural properties of the final product. Partial substitution with quinoa flour generated similar thermomechanical and textural properties in the dough, and similar bread technological characteristics related to the control bread (100% wheat). Read More

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ARID1B, a molecular suppressor of erythropoiesis, is essential for the prevention of Monge's disease.

Exp Mol Med 2022 Jun 7. Epub 2022 Jun 7.

Division of Respiratory Medicine, Department of Pediatrics, University of California, San Diego, La Jolla, CA, USA.

At high altitude Andean region, hypoxia-induced excessive erythrocytosis (EE) is the defining feature of Monge's disease or chronic mountain sickness (CMS). At the same altitude, resides a population that has developed adaptive mechanism(s) to constrain this hypoxic response (non-CMS). In this study, we utilized an in vitro induced pluripotent stem cell model system to study both populations using genomic and molecular approaches. Read More

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Genome sequence for the blue-flowered Andean shrub Iochroma cyaneum reveals extensive discordance across the berry clade of Solanaceae.

Plant Genome 2022 Jun 6:e20223. Epub 2022 Jun 6.

Dep. of Ecology and Evolutionary Biology, Univ. of Colorado, Boulder, CO, USA.

The tomato (Solanum lycopersicum L.) family, Solanaceae, is a model clade for a wide range of applied and basic research questions. Currently, reference-quality genomes are available for over 30 species from seven genera, and these include numerous crops as well as wild species [e. Read More

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Projections of fire probability and ecosystem vulnerability under 21st century climate across a trans-Andean productivity gradient in Patagonia.

Sci Total Environ 2022 Sep 30;839:156303. Epub 2022 May 30.

INIBIOMA-Universidad Nacional del Comahue, CONICET, Quintral 1250, Bariloche 8400, Río Negro, Argentina.

Warming trends are altering fire regimes globally, potentially impacting on the long-term persistence of some ecosystems. However, we still lack clear understanding of how climatic stressors will alter fire regimes along productivity gradients. We trained a Random Forests model of fire probabilities across a 5°lat × 2° long trans-Andean rainfall gradient in northern Patagonia using a 23-year long fire record and biophysical, vegetation, human activity and seasonal fire weather predictors. Read More

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September 2022

(Orchidaceae, Spiranthinae), a new orchid species from Argentina-morphological evidence and phylogenetic reconstruction.

PeerJ 2022 26;10:e13433. Epub 2022 May 26.

Department of Plant Taxonomy and Nature Conservation, University of Gdansk, Gdansk, Poland.

Background: embraces a group of terrestrial species formerly placed in sensu lato. The genus currently comprises some 60 species, most of which are known from the southern parts of Brazil and Paraguay, with few species distributed in the Andean countries-only four species have been recorded from Argentina so far. In Jujuy Province, Argentina a new species of was found during our fieldwork. Read More

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Chlorophyll Fluorescence Imaging as a Tool for Evaluating Disease Resistance of Common Bean Lines in the Western Amazon Region of Colombia.

Plants (Basel) 2022 May 21;11(10). Epub 2022 May 21.

International Center for Tropical Agriculture (CIAT), Km 17 Recta Cali-Palmira, Cali 763537, Colombia.

The evaluation of disease resistance is considered an important aspect of phenotyping for crop improvement. Identification of advanced lines of the common bean with disease resistance contributes to improved grain yields. This study aimed to determine the response of the photosynthetic apparatus to natural pathogen infection by using chlorophyll (Chl) fluorescence parameters and their relationship to the agronomic performance of 59 common bean lines and comparing the photosynthetic responses of naturally infected vs. Read More

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Whole Transcriptome Sequencing Unveils the Genomic Determinants of Putative Somaclonal Variation in Mint ( L.).

Int J Mol Sci 2022 May 10;23(10). Epub 2022 May 10.

Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA)-CI La Selva, Rionegro 054048, Colombia.

Mint ( L., Lamiaceae) is a strongly scented herb of the family Lamiaceae that is grown mostly by clonal propagation, making it a valuable species for the study of somaclonal variation and its phenotypic consequences. The recent introduction of a few species of mint in South America, followed by a presumably rampant propagation, make this region particularly ideal for studying the extent of somaclonal genetic diversity. Read More

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