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Snapshot Survey of the Presence of Perfluoroalkyl Substances in Products, Articles, and the Environment in Ecuador

Engineering 2024年第6期37卷 49-61页

作者： Heidelore Fiedler luis Vega-Bustillos Jenny Arias-Pastrano Lander Vinicio Pérez-Aldás jose Castro-Díaz MTM Research Centre School of Science and TechnologyÖrebro UniversityÖrebro 70182Sweden Undersecretariat of Environmental Quality Ministry of EnvironmentWater and Ecological Transition of EcuadorQuito 170525Ecuador department of Environmental Chemistry The Technical University of AmbatoHuachi CampusAmbato 180207Ecuador Alternativavision Ambiental Cia.Ltda. Mexico 03100Mexico

The Stockholm Convention on Persistent Organic Pollutants(POPs)is a legally binding instrument for 186 Parties(status:April 2023).Accordingly,among other responsibilities,countries are obliged to report the production,import,or export of the POPs listed in Annexes A,B,or C;provide information to registers;maintain inventories;and monitor the presence of POPs in the *** the broader context of international chemicals and waste management,producer responsibilities,harmonized reporting,and compliance with national and international regulations,Ecuador has addressed the newly listed group of perfluorinated alkyl substances(PFAS)in its national implementation plan and sent selected products from its national market for PFAS *** products analyzed came from the initially listed fields of specific exemptions and acceptable purposes,including:fire-fighting foams;photographic aids;greasers/degreasers;various kinds of paper/packaging;textiles;and leather,coatings,cleaners,metal plating,and *** results showed that the three PFAS presently listed in the Stockholm Convention could be quantified in only a few samples;additional PFAS,not yet listed in the Convention also had low detection *** the number of samples was limited,the samples covered a large spectrum of sample matrices,making it possible to conclude that—once these products become waste and are regulated under the Basel Convention—they would not constitute a disposal ***,verification of the presence of PFAS in products on the market is expected to pose an analytical challenge for both,developed and developing countries.

关键词： Emerging or newly listed POPs Stockholm Convention Products and articles PFAS analysis developing countries

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Muscle strength deficits are associated with low bone mineral density in young pediatric cancer survivors:The iBoneFIT project

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Journal of Sport and Health Science 2024年第3期13卷 419-427页

作者： Andres Marmol-Perez jose J.Gil-Cosano Esther Ubago-Guisado Francisco J.Llorente-Cantarero Juan Francisco Pascual-Gázquez Kirsten K.Ness Vicente Martinez-Vizcaino Jonatan R.Ruiz luis Gracia-Marco department of Physical Education and Sports Faculty of Sport SciencesSport and Health University Research Institute(iMUDS)University of GranadaGranada 18011Spain department of Epidemiology and Cancer Control St.Jude Children's Research HospitalMemphisTN 38105USA department of Communication and Education Loyola University AndalusiaSeville 41704Spain Biosanitary Research Institute ibs.GranadaGranada 18012Spain Maimonides Biomedical Research Institute of Cordoba(IMIBIC) Cordoba 14004Spain CIBEROBN Biomedical Research Networking Center for Physiopathology of Obesity and NutritionCarlos III Health InstituteMadrid 28029Spain department of Specific Didactics Faculty of EducationUniversity of CordobaCordoba 14071Spain Pediatric and adolescent hematology and oncology service Pediatrics and Pediatric Surgery Clinical Management UnitVirgen de las Nieves University HospitalGranada 18014Spain Health and Social Research Center Universidad de Castilla-La ManchaCuenca 13001Spain

Background Pediatric cancer survivors are at increased risk of muscle weakness and low areal bone mineral density(aBMD).However,the prevalence of muscle strength deficits is not well documented,and the associations of muscle strength with aBMD are unknown in this ***,this study aimed to investigate the prevalence of upper-and lower-body muscle strength deficits and to examine the associations of upper-and lower-body muscle strength with age-,sex,and race-specific aBMD Z-scores at the total body,total hip,femoral neck,and lumbar *** This cross-sectional study included 116 pediatric cancer survivors(12.1±3.3 years old,mean±SD;42.2%female).Upper-and lower-body muscle strength were assessed by handgrip and standing long jump test,***‑energy X‑ray absorptiometry was used to measure aBMD(g/cm2).Associations between muscle strength and aBMD were evaluated in multivariable linear regression *** regression was used to evaluate the contribution of muscle strength(1-decile lower)to the odds of having low aBMD(Z-score≤1.0).All analyses were adjusted for time from treatment completion,radiotherapy exposure,and body mass *** More than one-half of survivors were within the 2 lowest deciles for upper-(56.9%)and lower-body muscle strength(60.0%)in comparison to age-and sex-specific reference *** strength deficits were associated with lower aBMD Z-scores at all sites(B=0.133–0.258,p=0.001–0.032).Each 1-decile lower in upper-body muscle strength was associated with 30%–95%higher odds of having low aBMD Z-scores at all *** 1-decile lower in lower-body muscle strength was associated with 35%–70%higher odds of having low aBMD Z-scores at total body,total hip,and femoral *** Muscle strength deficits are prevalent in young pediatric cancer survivors,and such deficits are associated with lower aBMD Z-scores at all *** results suggest that interventions designed to improve muscle strength in t

关键词： Bone health Childhood cancer DXA Lean mass Resistance training

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deciphering the fiber quality of Gossypium barbadense *** in La Convención,Cusco,Perú

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Journal of Cotton Research 2024年第3期7卷 231-242页

作者： MORALES-ARANIBAR luis SAENZ manuel Canto MORALES-ARANIBAR Carlos Genaro RIVERA Marite Yulisa Nieves AGUILERA Jorge González STEINER Fábio BARDIVIESSO Diógenes Martins ZUFFO Alan Mario National Intercultural University of Quillabamba Cusco 08741Peru Universidad Nacional Agraria La Molina(UNALM) Lima 012Peru Graduate School Jorge Basadre Grohmann National UniversityTacna 583000Peru National Institute of Agrarian Innovation(INIA) Lima 15024Peru department of Agronomy State University of Mato Grosso do Sul(UEMS)Cassilândia 79540‑000MSBrazil department of Agronomy State University of Maranhão(UEMA)Balsas 65800‑000MABrazil

Background The quality of cotton fiber determines its value in the textile market,influencing agricultural profitability and the efficiency of textile *** selection of genotypes with superior fibers is a key factor for genetic improvement programs seeking adaptability and sustainability in the face of climate *** demonstrates the strategic importance of this plant for sustainable agriculture and the global textile *** objective of this research was to decipher the fiber quality of Gossypium barbadense *** in the native Amazonian communities of La Convención,Cusco-Perú,and to evaluate other critical aspects of native cotton that have not yet been *** methodology included non-probability sampling for accessibility,qualitative and quantitative analyses,and multivariate *** fiber length(mm),micronaire index(maturity/fineness),fiber strength(gf/tex),length uniformity index(%),fiber elongation(%),maturation index(%),and short fiber index(%)were the fiber characteristics evaluated using the HVI method in cotton *** Cotton accessions collected from Koribeni(Gossypium spp.)and Shivankoreni(Gossypium barbadense ***)stood out for their fiber quality properties,especially length,strength,and uniformity,which highlights their relevance for advanced textile applications and potential for use in plant genetic improvement *** These findings reinforce the need to conserve and study these native cotton accessions from the Peruvian Amazon region,which can offer promising perspectives for the textile industry and agricultural biodiversity.

关键词： Cotton Sustainability Amazonian communities Cotton fiber quality

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Prognostic role of selection criteria for liver transplantation in patients with hepatocellular carcinoma:Review and bibliometric

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iLIVER 2024年第1期3卷 52-61页

作者： Pamela Scarlett Espinoza Loyola Diana Laura Muratalla Bautista Karen Adela Hernández Bautista Elizabeth Gil White JoséAntonio González Moreno Daniel Angel Torres del Real Víctor manuel Páez Zayas Carla Escorza-Molina Fernando Mondragón Rodríguez Omar Vásquez Gómez luis Jorge Fernández López Paul Santiago Mogrovejo Vázquez Isidoro Aczel Sánchez-Cedillo Víctor jose Visag Castillo Social Service Internship Universidad Nacional Autónoma de MéxicoMexico City 04510Mexico Social Service Internship Universidad AnahuacMexico City 04510Mexico department of Surgery Division of Transplantation Surgery Hospital General de MéxicoMexico City 06720Mexico departament of Gastroenterology Division of HepatologyHospital General de MéxicoMexico City 06720Mexico departmanet of Anesthesiology Hospital General de MéxicoMexico City 06720Mexico

Hepatocellular carcinoma(HCC)is one of the most common cancers in the world and is one of the leading indications for liver transplantation,liver transplantation is the gold standard treatment for end stage liver *** is based up on radiological characteristics and rarely biopsy *** treatment must be individualized to each patient to improve recurrences and *** this article,we focus on the different selection criteria for liver *** study aimed to investigate the distribution laws and research frontiers of international literature,so as to present holistic bibliometric evaluation of the studies on 5-year survival and disease-free recurrence in 5 years,according to hepatocarcinoma criteria for liver *** paper aims to review and analyze 5-year survival and disease-free recurrence based on hepatocarcinoma criteria for liver *** systematically examines and summarizes distribution characteristics and research frontiers through bibliometric analysis.A bibliographic search was implemented in PubMed/Medline,Clinical Key,Science Direct and Index Medicus with MESH terms,from the year 1996–*** selected for transplantation using the Metroticket 2.0(MT2)criteria had the highest overall survival along with patients selected for transplantation using the Milan Criteria had the best 5-year disease-free *** Metroticket 2.0 criteria(MT2)and Milan Criteria(MC)have shown the most favorable post-transplant outcomes for patients with hepatocellular carcinoma(HCC).However,MC demonstrated the best 5-year disease-free recurrence rate,underscoring the significance of taking into account tumor morphology and biology when determining the eligibility of HCC patients for liver *** distribution characteristics and research frontiers by bibliometrics concerning prognostic role of selection criteria for liver transplantation in patients with hepatocellular carcinoma the collaboration

关键词： Hepatocellular carcinoma Liver transplantation Survival Criteria Recurrence Bibliometrics

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Diagnosis and management of bacterial infections in decompensated cirrhosis

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World Journal of Hepatology 2013年第1期5卷 16-25页

作者： Maria Pleguezuelo jose manuel Benitez Juan Jurado jose luis Montero manuel de la Mata Liver Research Unit Reina Sofia University HospitalAvda Menendez Pidal s/n14004 CordobaSpain

Bacterial infections are one of the most frequent complications in cirrhosis and result in high mortality *** with cirrhosis have altered and impaired immunity,which favours bacterial *** of infections are more frequent in patients with decompensated cirrhosis than those with compensated liver *** most common and life-threatening infection in cirrhosis is spontaneous bacterial peritonitis followed by urinary tract infections,pneumonia,endocarditis and skin and soft-tissue *** with decompensated cirrhosis have increased risk of developing sepsis,multiple organ failure and *** factors associated with the development of infections are severe liver failure,variceal bleeding,low ascitic protein level and prior episodes of spontaneous bacterial peritonitis (SBP).The prognosis of these patients is closely related to a prompt and accurate *** appropriate treatment decreases the mortality *** strategies are the mainstay of the management of these *** antibiotics should be started immediately following the diagnosis of SBP and the first-line antibiotic treatment is third-generation ***,the efficacy of currently recommended empirical antibiotic therapy is very low in nosocomial infections including SBP,compared to community-acquired *** may be associated with the emergence of infections caused by Enterococcus faecium and extended-spectrum β-lactamaseproducing Enterobacteriaceae,which are resistant to the first line antimicrobial agents used for *** emergence of resistant bacteria,underlines the need to restrict the use of prophylactic antibiotics to patients with the greatest risk of *** infections should be treated with wide spectrum *** studies of early diagnosis,prevention and treatment are needed to improve the outcomes in patients with decompensated cirrhosis.

关键词： Cirrhosis Infections Spontaneous bacterial peritonitis Ascites Antibiotics

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Highly divergent sympatric lineages of Leptotila verreauxi(Aves:Columbidae)suggest a secondary contact area in the Isthmus of Tehuantepec,Mexico

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Avian Research 2024年第1期15卷 12-21页

作者： Orlando J.Espinosa-Chávez Adolfo G.Navarro-Sigüenza Hernando Rodríguez-Correa luis A.Sánchez-González Museo de Zoología“Alfonso L.Herrera” Depto.de Biología EvolutivaFacultad de CienciasUniversidad Nacional Autonoma de MexicoApdo.Postal 70-399CP 04510Ciudad de MexicoMexico Posgrado en Ciencias Biologicas Unidad de PosgradoEdificio D1◦PisoCircuito de PosgradosCiudad UniversitariaUniversidad Nacional Autonoma de MexicoCoyoacanCP 04510CDMXMexico Escuela Nacional de Estudios Superiores Unidad Morelia Universidad Nacional Autonoma de Mexico.Antigua Carretera a Patzcuaro No.8701 Col.Ex Hacienda de San Jose de la HuertaC.P.58190MoreliaMichoacanMexico

Due to a complex geological and biotic history,the Isthmus of Tehuantepec(IT),has been long recognized as a driver for the evolutionary divergence of numerous lowland and highland *** distributed in the lowlands of the American continent,the White-Tipped Dove(Leptotila verreauxi)is a polytypic species with 13 recognized *** of these have been recorded in Mexico,and the distribution of three abuts at the IT,suggesting a contact *** estimate phylogenetic patterns,divergence times and genetic differentiation,we examined two mt DNA(ND2 and COI)and one n DNA(β-fibint 7)*** also used correlative ecological niche models(ENM)to assess whether ecological differences across the IT may have acted as a biogeographical *** estimated paleodistributions during the Middle Holocene,Last Glacial Maximum and Last Interglacial,to evaluate the influence of climate changes on the distribution and demographic *** results showed genetically distinct lineages that diverged approximately 2.5 million years *** and ecological factors may have played a dual role in promoting differentiation,but also in the formation of a secondary contact zone in the southern *** ecological niche comparisons indicated that the ecological niche of sympatric lineages at the IT are not identical,suggesting niches divergence;in addition,environmental niche models across the region indicated no abrupt biogeographic barriers,but the presence of regions with low *** results suggest that genetic differentiation originated by a vicariant event probably related to environmental factors,favored the evolution of different ecological ***,the absence of a biogeographic barrier but the presence of less suitable areas in the contact regions,suggest that secondary contact zones may be also maintained by climatic factors for the eastern group,but also by biotic interactions for the western group.

关键词： Biogeographical boundary Humid and dry forests Isthmus of Tehuantepec Phylogeography Secondary contact

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Unilateral rNurr1-V5 transgene expression in nigral dopaminergic neurons mitigates bilateral neuropathology and behavioral deficits in parkinsonian rats withα-synucleinopathy

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Neural Regeneration Research 2024年第9期19卷 2057-2067页

作者： Bismark Gatica-Garcia Michael J.Bannon Irma Alicia Martínez-Dávila luis O.Soto-Rojas David Reyes-Corona Lourdes Escobedo Minerva Maldonado-Berny ME Gutierrez-Castillo Armando J.Espadas-Alvarez manuel A.Fernandez-Parrilla Juan U.Mascotte-Cruz CP Rodríguez-Oviedo Irais E.Valenzuela-Arzeta Claudia Luna-Herrera Francisco E.Lopez-Salas Jaime Santoyo-Salazar Daniel Martinez-Fong departamento de Fisiología Biofísica y NeurocienciasCentro de Investigación y de Estudios AvanzadosCiudad de MéxicoMéxico department of Pharmacology Wayne State University School of MedicineDetroitMIUSA Laboratorio de Patogénesis Molecular Carrera Médico CirujanoFacultad de Estudios Superiores IztacalaUniversidad Nacional Autónoma de MéxicoTlalnepantla de BazMéxico Red de Medicina para la Educación y desarrollo y la Investigación Científica de Iztacala(Red MEDICI) Carrera Médico CirujanoFacultad de Estudios Superiores IztacalaUniversidad Nacional Autónoma de MéxicoTlalnepantla de BazMéxico Nanoparticle Therapy Institute AguascalientesMéxico departamento de Biociencias e Ingeniería Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y DesarrolloInstituto Politécnico NacionalCiudad de MéxicoMéxico Escuela Nacional de Medicina y Homeopatía Instituto Politécnico NacionalCiudad de MéxicoMéxico departamento de Fisiología Escuela Nacional de Ciencias BiológicasInstituto Politécnico NacionalCiudad de MéxicoMéxico departamento de Biología Molecular y Biotecnología Instituto de Investigaciones BiomédicasUniversidad Nacional Autónoma de MéxicoCiudad de MéxicoMéxico departamento de Física Centro de Investigación y de Estudios AvanzadosCiudad de MéxicoMéxico Programa de Nanociencias y Nanotecnología Centro de Investigación y de Estudios AvanzadosCiudad de MéxicoMéxico

Parkinsonism by unilateral,intranigralβ-sitosterolβ-D-glucoside administration in rats is distinguished in that theα-synuclein insult begins unilaterally but spreads bilaterally and increases in severity over time,thus replicating several clinical features of Parkinson’s disease,a typicalα-*** Nurr1 repressesα-synuclein,we evaluated whether unilateral transfected of rNurr1-V5 transgene via neurotensin-polyplex to the substantia nigra on day 30 after unilateralβ-sitosterolβ-D-glucoside lesion could affect bilateral neuropathology and sensorimotor deficits on day 30 *** study found that rNurr1-V5 expression but not that of the green fluorescent protein(the negative control)reducedβ-sitosterolβ-D-glucoside-induced ***,a bilateral increase in tyrosine hydroxylase-positive cells and arborization occurred in the substantia nigra and increased tyrosine hydroxylase-positive ramifications in the *** addition,tyrosine hydroxylase-positive cells displayed less senescence markerβ-galactosidase and more neuron-cytoskeleton markerβIII-tubulin and brain-derived neurotrophic factor.A significant decrease in activated microglia(positive to ionized calcium-binding adaptor molecule 1)and neurotoxic astrocytes(positive to glial fibrillary acidic protein and complement component 3)and increased neurotrophic astrocytes(positive to glial fibrillary acidic protein and S100 calcium-binding protein A10)also occurred in the substantia *** effects followed the bilateral reduction inα-synuclein aggregates in the nigrostriatal system,improving sensorimotor *** results show that unilateral rNurr1-V5 transgene expression in nigral dopaminergic neurons mitigates bilateral neurodegeneration(senescence and loss of neuron-cytoskeleton and tyrosine hydroxylase-positive cells),neuroinflammation(activated microglia,neurotoxic astrocytes),α-synuclein aggregation,and sensorimotor *** neurotrophic astrocytes and

关键词： A1 astrocytes A2 astrocytes gene therapy microglia motor deficits nanoparticles neurodegeneration neuroinflammation senescence α-synuclein aggregates

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Concordance among pulse wave velocity assessment methods:A network meta-analysis

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Chinese Medical Journal 2024年第17期137卷 2137-2139页

作者： Iván Cavero-Redondo Irene Sequí-Domínguez Alicia Saz-Lara jose luis Garcia-Klepzig Maribel Lucerón-Lucas-Torres Irene Martínez-García Celia Álvarez-Bueno Vicente Martínez-Vizcaíno CarVasCare Research Group Facultad de Enfermería de CuencaUniversidad de Castilla-La ManchaCuenca 16071Spain Facultad de Ciencias de la Salud Universidad Autónoma de ChileTalca 3460000Chile Health and Social Research Center Universidad de Castilla-La ManchaCuenca 16071Spain Internal Medicine department San Carlos University HospitalMadrid 28040Spain Universidad Politécnica y Artística del Paraguay Asunción 2024Paraguay

To the Editor:Arterial stiffness signifies early structural and functional changes in the arterial *** wave velocity(PWV)stands out as the most validated method for noninvasive arterial stiffness quantification,serving as the gold standard for assessing aortic *** estimates the transit time of the pulse between waves at distinct sites in the vascular tree.

关键词： arterial stiffness pulse

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Acoustic streaming and Sun's meridional circulation

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Research in Astronomy and Astrophysics 2016年第9期16卷 101-106页

作者： jose manuel Valverde Faculty of Physics University of Seville

A vast number of physical processes involving oscillations of a bounded viscous fluid are relevantly influenced by acoustic streaming. When this happens a steady circulation of fluid develops in a thin boundary adjacent to the interface. Some examples are refracted sound waves, a fluid inside a spherical cavity undergoing torsional oscillations or a pulsating liquid droplet. Steady streaming around circular interfaces consists of a hemispherically symmetric recirculation of fluid from the equatorial plane to the polar axes closely resembling the meridional circulation pattern observed in the Sun＇s convection zone that determines the solar cycle. In this paper, it is argued that the acoustic pulsations exhibited by the Sun would lead to acoustic streaming in the boundary of the convection zone. A simple estimation using a typical dominant frequency of 3 mHz and the observed surface oscillation amplitude yields a steady streaming velocity Us - 10 m s^-1, which is on the order of the meridional circulation velocity observed in the Sun＇s convection zone.

关键词： Sun general -- Sun helioseismology -- Sun granulation -- Sun oscillations -- Sun fun-damental parameters -- Sun activity

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Life cycle and nymphal feeding of Besdolus ravizzarum （Plecoptera： Perlodidae）, a threatened stonefly

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Insect Science 2010年第2期17卷 149-153页

作者： Stefano Fenoglio Tiziano Bo manuel Jesus Lepez-Rodriguez jose manuel Tierno de Figueroa Dipartimento di Scienze dell'Ambiente e della Vita Universita del Piemonte Orientale Alessandria Italy departamento de Biologia Animal Facultad de Ciencias Universidad de Granada Granada Spain

We have studied some aspects of Besdolus ravizzarum biology in the Apen- nines. This stonefly has a very localized distribution in southeastern France and northern Italy. This species is considered threatened. For this reason it is especially relevant to improve knowledge about its natural history, previously unknown. despite the large size of nymphs, this species shows a univoltine life cycle. The growth is slow but uniform from October to April or May when the short flight period occurs. The analysis of the gut con- tents indicates this species is a predator, feeding mainly on Baetidae and Chironomidae. It is notable that the development of this carnivorous species through cold periods coincides with the season with higher richness and density of potential prey in Apennine streams. Further studies are needed to improve knowledge of the distribution of the species and to start planning effective conservation efforts.

关键词： conservation life history northern Italy stonefly threatened species trophic role

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