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Exploring innovative synthetic solutions for advanced polymer-based electrochromic energy storage devices:Phenoxazine as a promising chromophore

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Journal of Energy Chemistry 2024年第4期91卷 433-452页

作者： Catalin-Paul Constantin Mihaela Balan-Porcarasu gabriela Lisa “Petru Poni”Institute of Macromolecular Chemistry Electroactive Polymers&Plasmochemistry Laboratory41A Grigore Ghica Voda AlleyIasi 700487Romania “Gh.Asachi”Technical University Iasi Faculty of Chemical EngineeringBd.Mangeron 71Iasi 700050Romania

The current investigation offers an innovative synthetic solution regarding electrochromic(EC)and energy storage applications by exploring phenoxazine(POZ)moiety.Subsequently,three POZ-based polymers(polyimide,polyazomethine,and polyamide)were synthesized to ascertain the superior performer.The polyamide exhibited remarkable attributes,including high redox stability during 500 repetitive CVs,optical contrast of 61.98%,rapid response times of 1.02 and 1.38 s for coloring and bleaching,EC efficiency of 280 cm^(2)C^(-1).and decays of the optical density and EC efficiency of only 12.18%and 6.23%after 1000 cycles.Then,the energy storage performance of polyamide PA was tested,for which the following parameters were obtained:74.7 F g^(-1)(CV,scan rate of 10 mV s^(-1))and 118 F g^(-1)(GCD,charging current of 0.1 A g^(-1)).Then,the polyamide was tested in EES devices,which yielded the following EC parameters:an optical contrast of 62.15%,response times of 9.24 and 5.01 s for coloring and bleaching,EC efficiency of 178 cm^(2)C^(-1),and moderate decays of 20.25%and 23.24%for the optical density and EC efficiency after 500 cycles.The energy storage performance included a capacitance of 106 F g^(-1)(CV,scan rate of 0.1 mV s^(-1))and 9.23 F g^(-1)(GCD,charging current of 0.1 A g^(-1)),capacitance decay of 11.9%after500 cycles,and 1.7 V retention after 2 h.Also,two EES devices connected in series powered a 3 V LED for almost 30 s.

关键词： Polymers Phenoxazine Electrochromic Energy storage Electrochromi cenergy storage devices

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Supplementation of vitamin E or a botanical extract as antioxidants to improve growth performance and health of growing pigs housed under thermoneutral or heat-stressed conditions

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Journal of Animal Science and Biotechnology 2024年第3期15卷 1101-1118页

作者： Ysenia V.Silva‑Guillen Consuelo Arellano Jeffrey Wiegert R.Dean Boyd gabriela E.Martinez Eric van Heugten Department of Animal Science North Carolina State UniversityRaleighNC 27695USA Department of Statistics North Carolina State UniversityRaleighNC 27695USA Department of Animal Science Texas A&M UniversityCollege StationTX 77843USA Animal Nutrition Research LLCAlvatonKY 42122USA.

Background Heat stress has severe negative consequences on performance and health of pigs,leading to significant economic losses.The objective of this study was to investigate the effects of supplemental vitamin E and a botanical extract in feed or drinking water on growth performance,intestinal health,and oxidative and immune status in grow-ing pigs housed under heat stress conditions.Methods Duplicate experiments were conducted,each using 64 crossbred pigs with an initial body weight of 50.7±3.8 and 43.9±3.6 kg and age of 13-week and 12-week,respectively.Pigs(n=128)were housed individually and assigned within weight blocks and sex to a 2×4 factorial arrangement consisting of 2 environments(thermo-neutral(21.2℃)or heat-stressed(30.9℃))and 4 supplementation treatments(control diet;control+100 IU/L of D-α-tocopherol in water;control+200 IU/kg of DL-α-tocopheryl-acetate in feed;or control+400 mg/kg of a botanical extract in feed).Results Heat stress for 28 d reduced(P≤0.001)final body weight,average daily gain,and average daily feed intake(-7.4 kg,-26.7%,and-25.4%,respectively)but no effects of supplementation were detected(P>0.05).Serum vitamin E increased(P<0.001)with vitamin E supplementation in water and in feed(1.64 vs.3.59 and 1.64 vs.3.24),but not for the botanical extract(1.64 vs.1.67 mg/kg)and was greater when supplemented in water vs.feed(P=0.002).Liver vitamin E increased(P<0.001)with vitamin E supplementations in water(3.9 vs.31.8)and feed(3.9 vs.18.0),but not with the botanical extract(3.9 vs.4.9 mg/kg).Serum malondialdehyde was reduced with heat stress on d 2,but increased on d 28(interaction,P<0.001),and was greater(P<0.05)for antioxidant supplementation compared to control.Cellular proliferation was reduced(P=0.037)in the jejunum under heat stress,but increased in the ileum when vitamin E was supplemented in feed and water under heat stress(interaction,P=0.04).Tumor necrosis factor-αin jejunum and ileum mucosa decreased by heat stress(P<0.05)and was reduced by vitamin E sup-plementations under heat

关键词： Botanical extract Growing pigs Heat stress Immune status Oxidative status Tocopherol Water

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What is the effect of Tribulus terrestris on testicular morphology and sperm production?An experimental study in the rat model

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Asian Journal of Andrology 2024年第1期26卷 67-70页

作者： Marcello Henrique Araujo Da Silva gabriela Faria Buys-Goncalves Joao Henrique Duque Reis Estrada Francisco Jose Barcellos Sampaio Diogo Benchimol de Souza Urogenital Research Unit Rio de Janeiro State UniversityRio de Janeiro 20551-030RJBrazil

The objective of this study was to investigate whether treatment with Tribulus terrestris(Tt)has any impact on the testicular morphology and function in a rodent model.Twenty male rats were divided into a control group and a group receiving 100 mg kg^(-1) body weight of Tt supplementation.After 4o days of experiment,the animals were submitted to euthanasia;epididymal tail spermatozoa were collected;and spermatozoa concentration,motility,and viability were analyzed.In addition,testicles were collected and processed for histomorphometrical analyses.Data were compared using the Student's t-test and considered significant when P

关键词： morphometry testicle Tribulus terrestris

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Environmental changes affect picoplanktonic composition in Antarctic Peninsula ponds

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Advances in Polar Science 2024年第1期35卷 108-122页

作者： Micaela DÍAZ Leonardo LAGOMARSINO gabriela MATALONI Marianela BELTRÁN Marcela LIBERTELLI Paulina FERMANI Laboratorio de Ecología Acuática INTECH-UNSAM-CONICETChascomús 7130Argentina Facultad de Ciencias Naturales y de la Salud UNPSJBComodoro Rivadavia 9000Argentina Laboratorio de Biodiversidad Limnología y Biología de la Conservación3IA-UNSAM-CONICETBuenos Aires 1650Argentina Departamento de Biología de Predadores Tope Instituto Antártico ArgentinoBuenos Aires 1650Argentina Laboratorio de Microbiología Ambiental IBIOMAR/CESIMAR-CENPAT-CONICETPuerto Madryn 9120Argentina

Antarctic Peninsula is experiencing one of the largest global warming events worldwide.Shallow water bodies generated by the melting of snow in summer are numerous,and they might act as sentinels of climate change due to their rapid response and ability to integrate catchment information.Shifts in climate can influence the structure of microbial communities which dominate these freshwaters ecosystems.Here,we characterize three ponds at Cierva Point(Antarctic Peninsula)by examining their physico-chemical and morphological characteristics and we explored how different factors modify the structure of the microbial community.We studied the abundance and biomass of heterotrophic bacteria,picocyanobacteria and picoeukaryote algae during January and February of two consecutive summers(2017 and 2018).We found that ponds had different limnological characteristics,due to their location,geomorphological features and presence of the surrounding flora and fauna.Physico-chemical parameters as well as microbial community differed between ponds,months and years.In 2017,most ponds were oligo to mesotrophic states.The larger accumulated rainfall(as a result of environmental changes on the Antarctic Peninsula)during 2018,particularly in February,causes nutrient runoff into water bodies.This affects those ponds with the highest seabird circulation,such as gentoo penguin,increasing eutrophication.As a result,picoplanktonic abundances were higher,and the community structure shifts to a largely heterotrophic bacteria dominated one.These results suggest that these communities could act as sentinels to environmental changes,anticipating a future with mostly hypertrophic ponds.

关键词： microorganisms freshwater environments climate change Cierva Point

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Gut microbiota in preterm infants receiving breast milk or mixed feeding

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World Journal of Clinical Pediatrics 2024年第2期13卷 135-145页

作者： Sandra gabriela Sánchez-González Bárbara gabriela Cárdenas-del-Castillo Elvira Garza-González Gerardo R Padilla-Rivas Isaías Rodríguez-Balderrama Consuelo Treviño-Garza Fernando Félix Montes-Tapia Gerardo C Palacios-Saucedo Anthony Gutiérrez-Rodríguez Manuel Enrique de-la-O-Cavazos Department of Pediatrics Hospital Universitario“Dr.JoséEleuterio González”Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Departamento de Bioquímica y Medicina Molecular Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Department of Biochemistry and Molecular Medicine Universidad Autónoma de Nuevo LeónMonterrey 64460Nuevo LeónMéxico Department of Pediatric Surgery Hospital Universitario"Dr.JoséEleuterio González"Monterrey 64460Nuevo LeónMéxico

BACKGROUND Preterm birth is the leading cause of mortality in newborns,with very-low-birthweight infants usually experiencing several complications.Breast milk is considered the gold standard of nutrition,especially for preterm infants with delayed gut colonization,because it contains beneficial microorganisms,such as Lactobacilli and Bifidobacteria.AIM To analyze the gut microbiota of breastfed preterm infants with a birth weight of 1500 g or less.METHODS An observational study was performed on preterm infants with up to 36.6 wk of gestation and a birth weight of 1500 g or less,born at the University Hospital Dr.JoséEleuterio González at Monterrey,Mexico.A total of 40 preterm neonates were classified into breast milk feeding(BM)and mixed feeding(MF)groups(21 in the BM group and 19 in the MF group),from October 2017 to June 2019.Fecal samples were collected before they were introduced to any feeding type.After full enteral feeding was achieved,the composition of the gut microbiota was analyzed using 16S rRNA gene sequencing.Numerical variables were compared using Student’s t-test or using the Mann–Whitney U test for nonparametric variables.Dominance,evenness,equitability,Margalef’s index,Fisher’s alpha,Chao-1 index,and Shannon’s diversity index were also calculated.RESULTS No significant differences were observed at the genus level between the groups.Class comparison indicated higher counts of Alphaproteobacteria and Betaproteobacteria in the initial compared to the final sample of the BM group(P<0.011).In addition,higher counts of Gammaproteobacteria were detected in the final than in the initial sample(P=0.040).According to the Margalef index,Fisher’s alpha,and Chao-1 index,a decrease in species richness from the initial to the final sample,regardless of the feeding type,was observed(P<0.050).The four predominant phyla were Bacteroidetes,Actinobacteria,Firmicutes,and Proteobacteria,with Proteobacteria being the most abundant.However,no significant differences were observed between the initial and final samples

关键词： Gut microbiota Human milk Preterm infant Proteobacteria Very low birth weight 16S rRNA

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Elemental Quantification in Intradermal Tattoo-Inks by Means of Total Reflection X-Ray Fluorescence

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Journal of Cosmetics, Dermatological Sciences and Applications 2020年第1期10卷 33-53页

作者： gabriela riffo Camila Ramírez-Lama Leonardo Bennun Departamento de Educación Facultad de Educación Universidad de Concepción Concepción Chile Laboratorio de Física Aplicada Departamento de Física Facultad de Ciencias Físicas y Matemáticas Universidad de Concepción Concepción Chile

This work describes the application of a detailed set of TXRF evaluations to the elemental content of assorted tattoo inks, on the market of the city of Concepcion, Chile. We applied TXRF as a screening method for determining the composition in 3 sets of tattoo inks, in order to establish, from an inorganic point of view, the composition and purity of the samples, evaluating their elemental innocuousness. The analyzed 48 products were freely acquired from on line suppliers. All of them were analyzed by external standard quantification, but in order to inter-compare the results, a 15% of the samples were acidly digested and then quantified by the internal standard method. In the samples we determined: 1) their inorganic quantitative composition and, 2) the possible presence of elements which are potential health hazards. In this study few anomalies were found: 1) The high presence Ti of and W in few samples, 2) Arsenic was found in four of them, and 3) A trace detection of a rare earth element in a particular product. The products studied are almost freely imported from a world open marked, so the questions about their innocuousness could affect not only to the Chilean society.

关键词： Tattoo Inks Inorganic Composition Multi-Elemental Evaluation Trace Metal Analysis Heavy Metals Determination TXRF External Standard Quantification

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Association of donor hepatectomy time with liver transplantation outcomes: A multicenter retrospective study

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World Journal of Transplantation 2024年第1期14卷 130-140页

作者： Geisiane Custodio Andrew Maykon Massutti Aline Caramori Taynara Gonçalves Pereira Augusto Dalazen gabriela Scheidt Ludmilla Thomazini Cristiane Bauermann Leitão Tatiana Helena Rech Department of Intensive Care Unit Hospital Santa IsabelBlumenau-Santa Catarina CEP-89010906Brazil Transplant Division Hospital Santa IsabelBlumenau-Santa Catarina CEP-89010906Brazil School of Medicine Universidade Regional de Blumenau(FURB)Blumenau-Santa Catarina CEP-89010906Brazil School of Medicine Universidade Federal do Rio Grande do SulPorto Alegre 90035-903Brazil Departement of Endocrinology Hospital de Clínicas de Porto Alegre/Universidade Federal do Rio Grande do SulPorto Alegre 90035-903Rio Grande do SulBrazil Department of Internal Medicine Hospital de Clínicas de Porto AlegreDivision of Intensive Care MedicinePorto Alegre 90035-903Brazil

BACKGROUND Prolonged donor hepatectomy time may be implicated in early and late complications of liver transplantation.AIM To evaluate the impact of donor hepatectomy time on outcomes of liver transplant recipients,mainly early allograft dysfunction.METHODS This multicenter retrospective study included brain-dead donors and adult liver graft recipients.Donor-recipient matching was obtained through a crossover list.Clinical and laboratory data were recorded for both donors and recipients.Donor hepatectomy,cold ischemia,and warm ischemia times were recorded.Primary outcome was early allograft dysfunction.Secondary outcomes included need for retransplantation,length of intensive care unit and hospital stay,and patient and graft survival at 12 months.RESULTS From January 2019 to December 2021,a total of 243 patients underwent a liver transplant from a brain-dead donor.Of these,57(25%)developed early allograft dysfunction.The median donor hepatectomy time was 29(23–40)min.Patients with early allograft dysfunction had a median hepatectomy time of 25(22–38)min,whereas those without it had a median time of 30(24–40)min(P=0.126).CONCLUSION Donor hepatectomy time was not associated with early allograft dysfunction,graft survival,or patient survival following liver transplantation.

关键词： Brain death Hepatectomy Liver transplantation Early allograft dysfunction Graft survival

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Improving the training abilities of ophthalmic educators: the Ophthalmology Foundation’s initiatives

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Annals of Eye Science 2024年第1期9卷 1-3页

作者： Karl Golnik Yip Chee Chew gabriela Palis Meenakshi Swaminathan Department of Ophthalmology at the University of Cincinnati CincinnatiOHUSA. Department of Ophthalmology and Visual Sciences Khoo Teck Puat HospitalSingaporeSingapore Ophthalmology Department Hospital Italiano de Buenos AiresBuenos AiresArgentina Capstone Clinic ChennaiIndia Sri Ramachandra Medical College ChennaiIndia

Our goal as medical educators is for our students to learn what they need to know and competently perform ophthalmic procedures.In addition,the students need to have good communication skills and behave professionally and ethically(1,2).Most medical educators are not taught how to teach but rather learn by role-modeling their mentors.This can be good or bad depending on the mentor!In addition,the amount of knowledge and numbers of surgical procedures is ever increasing and yet,in most countries,the amount of time to train and become competent is not changing.Thus,our goal of creating competent ophthalmologists is ever more challenging.

关键词： Ophthalmology Foundation teaching skills feedback

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Ductal carcinoma in situ within a fibroadenoma:A case report and review of literature

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World Journal of Radiology 2024年第3期16卷 58-68页

作者： Yazmin Olivares-Antúnez Yesika Janett Dávila-Zablah JoséRaúl Vázquez-Ávila gabriela Sofía Gómez-Macías María Teresa Mireles-Aguilar Margarita Lilia Garza-Montemayor Department of Diagnostic Breast Imaging Center Hospital Zambrano HellionTecnológico de MonterreyNuevo León 66260Mexico Department of Patology Service Hospital San JoséTecnológico de MonterreyNuevo León 64710Mexico Department of Faculty of Medicine Hospital Universitario de la UANLNuevo León 64710Mexico. Department of Breast Surgery Center Hospital Zambrano HellionTecnológico de MonterreyNuevo León 66260Mexico

BACKGROUND Fibroadenoma(FA)is the most common tumor found in young women,although it can occur in any age group.Ductal carcinoma in situ(DCIS)that is confined in a FA is rare;it is most frequently reported as an incidental finding.CASE SUMMARY We report a case of DCIS within a FA in a 46-year-old female without cancerrelated personal and family histories.The patient was diagnosed with a breast conglomerate of nodules and was followed for 1 year.In the current control image study,we found suspicious microcalcification,as a new finding,within one of the nodules.Consequently,a core biopsy of the tumor,which appeared hypoechoic,oval,and circumscribed,was performed.The pathological diagnosis was ductal carcinoma in situ within a fibroepithelial lesion.The patient underwent breastconserving surgery and received radiotherapy as well as endocrine therapy(tamoxifen).CONCLUSION We recommend a multidisciplinary approach for adequate treatment and followup.

关键词： Carcinoma in situ Fibroadenoma Mammography Ultrasound Magnetic resonance imaging Radiology Case report

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Inflammasome links traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease

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Neural Regeneration Research 2025年第6期 1644-1664页

作者： gabriela Seplovich Yazan Bouchi Juan Pablo de Rivero Vaccari Jennifer C.Munoz Pareja Andrew Reisner Laura Blackwell Yehia Mechref Kevin K.Wang J.Adrian Tyndall Binu Tharakan Firas Kobeissy Department of Surgery Morehouse School of Medicine Department of Neurobiology Center for Neurotrauma Multiomics & Biomarkers (CNMB) Neuroscience Institute Morehouse School of Medicine Department of Neurological Surgery and the Miami Project to Cure Paralysis University of Miami Miller School of Medicine Division of Pediatric Critical Care Department of Pediatrics University of Miami Miller School of Medicine Department of Pediatrics Emory University Department of Neurosurgery Children's Healthcare of Atlanta Department of Chemistry and Biochemistry Texas Tech University Morehouse School of Medicine

Traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease are three distinct neurological disorders that share common pathophysiological mechanisms involving neuroinflammation. One sequela of neuroinflammation includes the pathologic hyperphosphorylation of tau protein, an endogenous microtubule-associated protein that protects the integrity of neuronal cytoskeletons. Tau hyperphosphorylation results in protein misfolding and subsequent accumulation of tau tangles forming neurotoxic aggregates. These misfolded proteins are characteristic of traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease and can lead to downstream neuroinflammatory processes, including assembly and activation of the inflammasome complex. Inflammasomes refer to a family of multimeric protein units that, upon activation, release a cascade of signaling molecules resulting in caspase-induced cell death and inflammation mediated by the release of interleukin-1β cytokine. One specific inflammasome, the NOD-like receptor protein 3, has been proposed to be a key regulator of tau phosphorylation where it has been shown that prolonged NOD-like receptor protein 3 activation acts as a causal factor in pathological tau accumulation and spreading. This review begins by describing the epidemiology and pathophysiology of traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease. Next, we highlight neuroinflammation as an overriding theme and discuss the role of the NOD-like receptor protein 3 inflammasome in the formation of tau deposits and how such tauopathic entities spread throughout the brain. We then propose a novel framework linking traumatic brain injury, chronic traumatic encephalopathy, and Alzheimer's disease as inflammasomedependent pathologies that exist along a temporal continuum. Finally, we discuss potential therapeutic targets that may intercept this pathway and ultimately minimize long-term neurological decline.

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