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E-DNA scaffold sensors and the reagentless, single- step, measurement of HIV-diagnostic antibodies in human serum

Microsystems & Nanoengineering 2020年第1期6卷 1141-1148页

作者： Claudio Parolo Ava S.Greenwood Nathan E.Ogden Di Kang Chase Hawes gabriel ortega Netzahualcoyotl Arroyo-Curras Kevin W.Plaxco Department of Chemistry and Biochemistry University of CaliforniaSanta BarbaraSanta BarbaraCAUSA Department of Materials University of CaliforniaSanta BarbaraSanta BarbaraCAUSA Department of Pharmacology and Molecular Sciences Johns Hopkins School of MedicineBaltimoreMD 21205USA Interdepartmental Program in Biomolecular Science and Engineering University of CaliforniaSanta BarbaraSanta BarbaraCA 93106USA

The multiplexed,point-of-care measurement of specific antibodies could improve the speed with which diseases are diagnosed and their treatment *** this end,we are developing E-DNA scaffold sensors,which consist of a rigid,nucleic acid“scaffold”attached on one end to an electrode and presenting both a redox reporter and an epitope on the *** the absence of antibody,the reporter efficiently transfers electrons when interrogated ***-induced steric hindrance limits movement,reducing electron transfer in a manner that is both easily measured and quantitatively related to target *** we have used monoclonal antibodies to explore the analytical performance of E-DNA sensors,showing that they support the rapid,single-step,quantitative detection of multiple antibodies in small volume ***,in contrast,we employ authentic human samples to better explore the platform’s clinical ***,we developed E-DNA sensors targeting three HIV-specific antibodies and then compared the analytical and clinical performance of these against those of gold standard serological *** so we find that,although the multistep amplification of an ELISA leads to a lower detection limits,the clinical sensitivity of ELISAs,E-DNA sensors and lateral-flow dipsticks are indistinguishable across our test *** thus appears that,by merging the quantitation and multiplexing of ELISAs with the convenience and speed of dipsticks,E-DNA scaffold sensors could significantly improve on current serological practice.

关键词： antibodies attached initiated

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Platelet-rich plasma application in diabetic ulcers:A review

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World Journal of Dermatology 2022年第1期10卷 1-9页

作者： Victoria Pereira Simão Carolina Souza Cury gabriel Mota Zamariolli Tavares gabriel Calixto ortega Arthur Cichetto Ribeiro gabriel Silva Santos JoséFábio Santos Duarte Lana Medical School Centro Universitário LusíadaSantos 11045-101São PauloBrazil Biomedical Science Brazilian Institute of Regenerative MedicineIndaiatuba 13334-170São PauloBrazil Department ofOrthopedics Brazilian Institute of Regenerative MedicineIndaiatuba 13334-170São PauloBrazil

There are 422 million diabetic people in the world.25%of these individuals are diagnosed with diabetic foot ulcer(DFU).20%of patients with DFU will suffer amputation of the lower *** amputation procedures,the mortality rate of patients is over 70%in 5 *** has no cure and,therefore,treatment aims to prevent and treat its *** platelet-rich plasma(PRP)has been shown to be a therapeutic tool for many types of disorders,including the treatment of *** manuscript aims to carry out a review to provide more knowledge about the efficacy and safety of autologous PRP for wound closure in patients with *** majority of studies included in this review state that PRP promotes improvement of DFU lesions by accelerating tissue healing ***,many studies have a small sample size and thus require larger sample range in order to improve robustness of data in the literature.

关键词： Diabetic foot ulcer Platelet-rich plasma Wound healing Tissue regeneration Inflammation

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Metabolic Syndrome and Insulin Resistance Are Associated with Chronic Kidney Disease in Nondiabetic Adults with Abdominal Obesity

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International Journal of Clinical Medicine 2011年第4期2卷 367-377页

作者： Luis Vigil Albert Goday Rafael gabriel Juan Francisco Ascaso Josep Franch Rafael ortega 不详

Aims: we investigate whether insulin resistance is associated with an increased prevalence for chronic kidney disease irrespective of the concurrent presence of metabolic syndrome. Methods: 1638 patients with abdominal obesity were selected. Metabolic syndrome and abdominal obesity were defined according to the International Diabetes Federation criteria. Insulin resistance was defined by Homeostasis Model Assessment Index >P75. Chronic kidney disease was defined by the presence of a low estimated glomerular filtration rate (Results: metabolic syndrome was present in 1030 (62.9%) patients and insulin resistance in 787 (48%). Conversely 61% of those with metabolic syndrome were insulin resistant and 79% of those with insulin resistance had metabolic syndrome. Chronic kidney disease was present in 18%. In multivariate analysis, chronic kidney disease was increased in subjects with insulin resistance (odds ratio [OR] = 1.350;CI 95%: 1.021 - 1.785;p = 0.035) and in those with metabolic syndrome (OR = 1.417;CI 95%: 1.045 - 1.922;p = 0.025). Conclusions: Metabolic syndrome and insulin resistance were significant and independently associated with chronic kidney disease in nondiabetic adults with abdominal obesity.

关键词： Insulin Resistance Metabolic Syndrome Abdominal Obesity Microalbuminuria Chronic Kidney Disease

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The role of environmental temperature on movement patterns of giant anteaters

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Integrative Zoology 2022年第2期17卷 285-296页

作者： Aline GIROUX Zaida ortega Alessandra BERTASSONI Arnaud Léonard Jean DESBIEZ Danilo KLUYBER gabriel Favero MASSOCATO Guilherme DE MIRANDA Guilherme MOURÃO Luciana SURITA Nina ATTIAS Rita de Cassia BIANCHI Vinícius Peron de Oliveira GASPAROTTO Luiz Gustavo Rodrigues OLIVEIRA-SANTOS Ecology Department Federal University of Mato Grosso do Sul(UFMS)Campo GrandeMato Grosso do SulBrazil Post Graduate Program of Ecology and Evolution Federal University of Goiás(UFG)GoiâniaGoiásBrazil Institute of Research and Conservation of Anteaters in Brazil(PROJETO TAMANDUÁ) ParnaíbaPiauíBrazil Institute for the Conservation of Wild Animals(ICAS) Campo GrandeMato Grosso do SulBrazil Royal Zoological Society of Scotland(RZSS) MurrayfieldEdinburghUK Institute for Ecological Research(IPÊ) NazaréPaulistaSão PauloBrazil Naples Zoo at Caribbean Gardens NaplesFloridaUSA The Houston Zoo HoustonTexasUSA National Institute of Criminalistics-Federal Police BrasíliaBrazil Embrapa Pantanal CorumbáMato Grosso do SulBrazil Natural Resources Graduate Program(PRONAT)-Federal University of Roraima(UFRR) Boa VistaRoraimaBrazil Animal Biology Graduate Program Federal University of Mato Grosso do Sul(UFMS)Campo GrandeMato Grosso do SulBrazil Animal Biology Department São Paulo State University(UNESP)São Josédo Rio PretoSão PauloBrazil Department of Preventive Veterinary Medicine and Animal Health School of Veterinary MedicineUniversity of São Paulo(USP)São PauloSPBrazil Brazilian Institute for Conservation Medicine(TRÍADE) RecifePernambucoBrazil

Mammals can show conspicuous behavioral responses to thermal variation,including changes in movement *** used an integrative approach to understand how environmental temperature can drive the movement behavior of a mammal with low capacity for physiological thermoregulation,the giant anteater(Myrmecophaga tridactyla).We tracked 52 giant anteaters in 7 areas throughout the Brazilian *** estimated the distance moved,area used,use of forest areas,and mean environmental temperature for each monitoring day of each *** modeled these data with Mixed Structural Equations—considering the possible interactions between our variables and controlling for sex and body *** anteaters reduced displacement and increased forest use with decreasing environmental temperature,probably because of their low body heat *** is possible that they reduce distance moved and area used by reducing the duration of *** decreasing temperature,forest habitats become warmer than open ones,besides buffer rain and chilly *** displacement and using forests are important strategies to reduce body heat loss and the energetic costs of ***,decreasing movement can limit food access and,consequently,***,we highlight the importance of forests as thermal *** increasing frequency and intensity of extreme weather events,we showed the need to preserve forest patches to offer suitable conditions for tropical mammals’behavioral *** this context,policies favoring deforestation on Brazilian territory are especially ***,we emphasize the need of integrative approaches to understand the complex interactions between organisms and the environment.

关键词： behavioral thermoregulation biologging habitat use mixed structural equations movement ecology

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Existence of Supercritical Hopf Bifurcation on a Type-Lorenz System

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Journal of Applied Mathematics and Physics 2023年第3期11卷 780-789页

作者： Evodio Muñoz-Aguirre Jorge Alvarez-Mena Pablo Emilio Calderón-Saavedra Josué Ramírez-ortega Francisco gabriel Hernández-Zamora Universidad Veracruzana Xalapa México Universidad del Tolima Ibagué Colombia

In this paper, a system of Lorenz-type ordinary differential equations is considered and, under some assumptions about the parameter space, the presence of the supercritical non-degenerate Hopf bifurcation is demonstrated. The technical tool used consists of the Central Manifold theorem, a well-known formula to calculate the Lyapunov coefficient and Hopf’s Theorem. For particular values of the parameters in the parameter space established in the main result of this work, a graph is presented that describes the evolution of the trajectories, obtained by means of numerical simulation.

关键词： Lorenz-Type System Subcritical Hopf Bifurcation Supercritical Hopf Bifurcation Hopf Theorem

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