Search | SciELO

Need help?

Add field +

Search history

No documents were found for your search

Results: 71

au:Galindo, G.

Filters

Collection + Options

All
Mexico

34
Brazil

15
Spain

10
Colombia

5
Cuba

3
Chile

2
Bolivia

1
Public Health

1

Journal + Options

All
Neotropical Ichthyology

6
Revista Española de Enfermedades Digestivas

5
Revista mexicana de física

4
Agrociencia

3
Revista de investigación clínica

3
Gaceta médica de México

2
Journal of applied research and technology

2
Journal of the Brazilian Chemical Society

2
Nutrición Hospitalaria

2
Pediatría Atención Primaria

2
Polibotánica

2
Revista Brasileira de Engenharia Agrícola e Ambiental

2
Revista fitotecnia mexicana

2
Anais da Academia Brasileira de Ciências

1
Anales de Medicina Interna

1

Show all...

Publication Year + Options

All
2018

10
2022

8
2020

7
2017

5
2007

4
2008

4
2009

3
2015

3
2016

3
2019

3
2023

3
2004

2
2005

2
2010

2
2012

2

Show all...

SciELO Thematic Areas + Options

All
Health Sciences

27
Biological Sciences

16
Agricultural Sciences

12
Exact and Earth Sciences

10
Engineering

4
Multidisciplinary

4
Applied Social Sciences

1
Human Sciences

1
Literature and Arts

1

WoS Subject Categories + Options

All
Multidisciplinary

20
Medicine

13
Sciences

9
Agriculture

7
Engineering

7
Zoology

7
Diseases

6
Gastroenterology

6
General

6
Hepatology

6
Infectious

6
Internal

6
Oncology

6
Surgery

6
Geriatrics

5

Show all...

WoS Citation Index + Options

All
Science Citation Index Expanded

40
Social Sciences Citation Index

2

Citables and non citables + Options

All
Citable

67
Non citable

4

Type of Literature + Options

All
Article

62
Brief report

2
Letter

2
Review article

2
Abstract

1
Case report

1
Other

1

Order by

Page of 5 Next

Select this page

Print | Send to email | Export |

Facebook
Twitter
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

0 Selected itens

List all
Erase all

Microwave-Assisted Rearrangement of Costunolide Catalyzed by Palladium(II) MicrowaveAssisted Microwave Assisted PalladiumII Palladium II Palladium(II
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Macías, Francisco A.

; Alvarenga, Elson S.

; Galindo, Juan C. G.

; Molinillo, José M. G.

; Cerceau, Cristiane I.

Journal of the Brazilian Chemical Society

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2024, Volume 35 N. 8 elocation e-20240038

Abstract: En | Text: En | PDF: En

The structure of costunolide was modified before conducting the Cope rearrangement under thermal conditions. This modification was undertaken to block the highly reactive Michael acceptor α-methylene-γ-lactone, thus preventing side reactions at high temperatures. In this work, the reaction was performed under heating or microwave irradiation using costunolide, not its modified version. Rates of Cope reactions catalyzed by palladium(II) assisted by microwave were substantially enhanced. The rearrangements of costunolide to elemanolide, eudesmanolides, and germacranolide were catalyzed by palladium acetate, bis(benzonitrile)palladium dichloride, and a mixture of both organometallics. Rates of microwave promoted rearrangements of costunolide were six times faster than the reactions assisted by heating. The best success rate for elemanolide (7) was obtained using a mixture of Pd(OAc)2 and (NCPh)2PdCl2. In this case, compound 7 was obtained in a yield of 34%, while the other sesquiterpene lactones were formed only in trace amounts. The reaction products were isolated using semi-preparative high performance liquid chromatography and further purified through sequential analytical high performance liquid chromatography. Bioactivity profiles that used etiolated wheat coleoptiles were conducted for compounds 6, 7, and 9: The tested compounds presented very high phytotoxicity, with inhibition up to 97%. conditions αmethyleneγlactone, αmethyleneγlactone α methylene γ lactone, lactone α-methylene-γ-lactone temperatures work version palladiumII II palladium(II enhanced eudesmanolides acetate bisbenzonitrilepalladium bis benzonitrile dichloride organometallics (7 PdOAc2 PdOAc Pd OAc 2 Pd(OAc) NCPh2PdCl2. NCPh2PdCl2 NCPhPdCl NCPh 2PdCl2. 2PdCl2 PdCl (NCPh)2PdCl2 case 34 34% amounts semipreparative semi preparative 6 9 phytotoxicity 97 97% ( Pd(OAc NCPh2PdCl 2PdCl (NCPh)2PdCl 3

https://doi.org/10.21577/0103-5053.20240038

In vitro antifungal activity of polymeric nanoparticles loaded with Euphorbia tirucalli extract
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Heya, M. S.

; Verde-Star, M. J.

; Rivas-Morales, C.

; García-Hernández, D. G.

; Tijerina-Sáenz, A.

; López-Cabanillas-Lomelí, M.

; Álvarez-Román, R.

; Galindo-Rodríguez, S. A.

Brazilian Journal of Biology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2024, Volume 84 elocation e275974

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo O potencial terapêutico das plantas medicinais é conhecido como alternativa para o tratamento das afecções humanas. Com efeito, a aplicação convencional dessas fontes medicinais apresenta diversas limitações, como baixa biodisponibilidade, solubilidade e estabilidade, que afetam sua eficácia farmacológica. Nas últimas décadas, avanços extraordinários foram feitos em novos sistemas de liberação de fármacos usando nanocarreadores. Este trabalho consistiu na determinação da atividade antifúngica in vitro do extrato metanólico de Euphorbia tirucalli, formulado em nanopartículas poliméricas. A atividade antifúngica foi determinada pelo método de microdiluição em microplacas de 96 poços, aplicando-se nanopartículas carregadas com extrato vegetal (NP-Ext) obtido por nanoprecipitação sobre isolados clínicos de Trichophyton rubrum e Trichophyton interdigitalis. Em relação às nanopartículas, os lotes utilizados não apresentaram diferenças significativas em suas características físico-químicas, com tamanho de 91,885 ± 1,621 nm, índice de polidispersão de 0,152 ± 0,025 e potencial Z de -6,047 ± 0,987. A quantificação do extrato na matriz polimérica foi determinada por espectroscopia de infravermelho (FT/IR), em que foram obtidas eficiência e porcentagem de encapsulamento de 22,15 ± 0,82 e 2,95 ± 0,11, respectivamente. A atividade antifúngica in vitro do extrato bruto e formulado foi calculada por meio da Concentração Inibitória Mínima (CIM) de cada um. Obteve-se uma CIM de 125 µg/mL contra T. rubrum e T. interdigitalis com o extrato bruto, enquanto o valor de CIM com NP-Ext contra estes mesmos fungos foi de, respectivamente, 55,55 e 0,1 µg/mL. Conclusões: a atividade biológica está intimamente ligada ao perfil fitoquímico do extrato, enquanto a melhora desse potencial com o NP-Ext com a forma farmacêutica esteve diretamente relacionada às características físico-químicas do nanocarreador. humanas efeito limitações biodisponibilidade estabilidade farmacológica décadas nanocarreadores tirucalli poliméricas 9 poços aplicandose aplicando se NPExt NP Ext (NP-Ext físicoquímicas, físicoquímicas físico químicas, químicas 91885 91 885 91,88 1621 1 621 1,62 nm 0152 0 152 0,15 0025 025 0,02 6,047 6047 6 047 -6,04 0987 987 0,987 FT/IR, FTIR FT/IR , FT IR (FT/IR) 2215 22 15 22,1 082 82 0,8 295 2 95 2,9 011 11 0,11 respectivamente (CIM um Obtevese Obteve 12 µgmL µg mL T 5555 55 55,5 01 0, Conclusões nanocarreador 9188 88 91,8 162 62 1,6 015 002 02 0,0 6,04 604 04 -6,0 098 98 0,98 (FT/IR 221 22, 08 8 29 2, 555 5 55, 918 91, 16 1, 00 6,0 60 -6, 09 0,9 6, -6 -

Abstract The therapeutic potential of medicinal plants is known as an alternative in treatment of human affections; in effect, the conventional application of these medicinal sources has several limitations like low bioavailability, solubility and stability, which affect its pharmacological efficacy. In recent decades, extraordinary advances have been made in new drug delivery systems using nanocarriers. This work consisted in determining the in vitro antifungal activity of the methanolic extract of Euphorbia tirucalli formulated in polymeric nanoparticles. The antifungal activity was determined by the microdilution method in 96-well microplates, applying nanoparticles loaded with plant extract (NP-Ext) obtained by nanoprecipitation on clinical isolates of Trichophyton rubrum and T. interdigitalis. Regarding the nanoparticles, the lots used did not present significant differences in their physicochemical characteristics, with a size of 91.885 ± 1.621nm, polydispersity index of 0.152 ± 0.025 and Z-potential of -6.047 ± 0.987. The quantification of the extract in the polymeric matrix was determined by infrared spectroscopy (FTIR), where an efficiency and encapsulation percentage of 22.15 ± 0.82 and 2.95 ± 0.11, respectively, were obtained. The in vitro antifungal activity of the crude and formulated extract was obtained calculating the Minimum Inhibitory Concentration (MIC) of each one; a MIC of 125 µg/mL was obtained against T. rubrum and T. interdigitalis with the crude extract, while a MIC value of 55.55 and 0.1 µg/mL was obtained with NP-Ext, respectively, against these same. Conclusions: biological activity is closely linked to the phytochemical profile of the extract; while the improvement of said potential with the NP-Ext with the dosage form was directly related to the physicochemical characteristics of the nanocarrier. affections effect bioavailability stability efficacy decades nanocarriers 96well well 96 microplates NPExt NP Ext (NP-Ext T 91885 91 885 91.88 1621nm nm 1 621nm 1.621nm 0152 0 152 0.15 0025 025 0.02 Zpotential Z 6.047 6047 6 047 -6.04 0987 987 0.987 FTIR, FTIR , (FTIR) 2215 22 15 22.1 082 82 0.8 295 2 95 2.9 011 11 0.11 respectively (MIC one 12 µgmL µg mL 5555 55 55.5 01 0. NPExt, Ext, same Conclusions nanocarrier 9 9188 88 91.8 015 002 02 0.0 6.04 604 04 -6.0 098 98 0.98 (FTIR 221 22. 08 8 29 2. 555 5 55. 918 91. 00 6.0 60 -6. 09 0.9 6. -6 -

https://doi.org/10.1590/1519-6984.275974

Different stocks of Prochilodus lineatus along the Cinzas River basin: contributions from a free-flowing tributary in the Capivara Reservoir region, Paranapanema River basin (upper Paraná River) freeflowing free flowing region upper
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ferreira, Dhiego G.

; Galindo, Bruno A.

; Limeira, Daniel M.

; Garla, Alanna

; Marques, Ana J. C.

; Moreira, Amanda A.

; Rodrigues, Maria V. H.

; Clemente, Roberta C.

; Shimpo, Jhennifer Y.

; Martins, Gabriel A.

; Almeida, Fernanda S.

; Apolinário-Silva, Caroline

; Zanatta, Augusto S.

; Sofia, Silvia H.

; Souza-Shibatta, Lenice

Neotropical Ichthyology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 21 N. 4 elocation e230080

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Barragens são umas das principais ameaças para peixes potamódromos Neotropicais, causando bloqueios de rotas migratórias e perdas de áreas de reprodução em um número crescente de sistemas de drenagem. Neste cenário, dados atuais defendem que a manutenção de tributários de fluxo livre em bacias hidrográficas fragmentadas seria uma importante estratégia na conservação de peixes migradores, tanto em situações de panmixia quanto em cenários com diferentes estoques coexistindo, tal como já relatado para Prochilodus lineatus. Este estudo analisou locos microssatélites e haplótipos mitocondriais em amostras de P. lineatus obtidas em diferentes anos ao longo da bacia do rio das Cinzas, no reservatório de Capivara (maior reservatório na calha principal do rio Paranapanema, alto rio Paraná) e no rio Tibagi, todos conectados por trechos livres, visando investigar as contribuições da bacia do rio das Cinzas na dinâmica populacional de peixes migradores na região do reservatório de Capivara. Ambos os marcadores detectaram altos níveis de diversidade genética e indicaram diferentes estoques de P. lineatus ao longo da bacia do rio das Cinzas, sugerindo alguma estruturação genética temporal, bem como a mistura destes estoques na amostra do reservatório de Capivara e de outros pontos, corroborando as relações de estoques neste reservatório e seus tributários. Neotropicais drenagem cenário coexistindo P maior Paranapanema Paraná Tibagi livres temporal pontos

Abstract Dams are one of the main threats to Neotropical potamodromous fish, causing blockages of migratory routes and loss of breeding areas in an increasing number of drainage systems. In this scenario, current data argue that the maintenance of free-flowing tributaries along fragmented watersheds would be an important strategy to the migratory fish conservation, both in panmixia situations and in scenarios with different coexisting stocks, as already reported for Prochilodus lineatus. This study analyzed microsatellite loci and mitochondrial haplotypes in samples of P. lineatus obtained in different years along the Cinzas River basin, as well as in the Capivara Reservoir (largest Reservoir in the Paranapanema main channel, upper Paraná River) and in the Tibagi River, all connected by free stretches, aiming to investigate the contributions of the Cinzas River basin to the population dynamics of migratory fish in the Capivara reservoir region. Both markers detected high genetic diversity levels and indicated different genetic stocks of P. lineatus along the Cinzas River basin, suggesting some temporal genetic structuring, as well as the mixture of these stocks in the sample from the Capivara reservoir and from other points, corroborating the relationships among stocks in this reservoir and its tributaries. systems scenario freeflowing flowing conservation P largest channel stretches region structuring points

https://doi.org/10.1590/1982-0224-2023-0080

Genetic diversity of the species Cnesterodon hypselurus (Cyprinodontiformes: Poeciliidae) in Cinzas River basin: new record and headwater capture evidences Cyprinodontiformes (Cyprinodontiformes Poeciliidae basin
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ferreira, Dhiego G.

; Galindo, Bruno A.

; Souza, Tais C. de

; Pereira, Leonardo B.

; Bernardes, Victor A. P.

; Marques, Ana J. C.

; Frantine-Silva, Wilson

; Kotelok-Diniz, Thais

; Aggio, Carlos E. G.

; Apolinário-Silva, Caroline

; Zanatta, Augusto S.

; Sofia, Silvia H.

Neotropical Ichthyology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 21 N. 1 elocation e230007

Abstract: Pt En | Text: Pt En | PDF: Pt | PDF: En

Resumo Cnesterodon hypselurus é um pequeno peixe que possui distribuição restrita no sul do Brasil, incluindo cabeceiras das bacias dos rios Tibagi e Itararé (alto rio Paraná). Este estudo reportou C. hypselurus na cabeceira da bacia do rio das Cinzas, onde não havia registros prévios desta espécie, e empregou locos microssatélites e haplótipos mitocondriais em uma análise genética de populações. Um total de 57 espécimes foi analisado, incluindo 30 do rio das Cinzas, 25 da bacia do rio Itararé e dois da bacia do rio Tibagi. Os resultados indicaram baixos níveis de diversidade genética (HE = 0,334 e h = 0,246) para a amostra do rio das Cinzas, sugerindo reflexos de um efeito fundador após a espécie ter dispersado de uma bacia para a outra, possivelmente a partir de captura de cabeceiras. Uma vez que diferentes populações foram detectadas entre os rios das Cinzas e Itararé (DEST = 0,248, valor de P < 0,05) e que outros pontos de ocorrência ainda são desconhecidos na bacia do rio das Cinzas, os dados do presente estudo mostram grande relevância e deveriam ser considerados em futuras ações de manejo e conservação, bem como em estudos evolutivos de C. hypselurus. Brasil alto Paraná. Paraná . Paraná) C 5 analisado 3 2 HE 0334 0 334 0,33 0,246 0246 246 outra DEST 0248 248 0,248 0,05 005 05 conservação 033 33 0,3 0,24 024 24 0,0 00 03 0, 0,2 02

Abstract Cnesterodon hypselurus is a small fish that has a restricted distribution in southern Brazil, including headwaters of the Tibagi and Itararé river basins (Upper Paraná River). This study reported C. hypselurus in a headwater of Cinzas River basin, where there were no previous records of this species, and employed microsatellite loci and mitochondrial haplotypes in a population genetic analysis. A total of 57 specimens was analyzed, including 30 from Cinzas River basin, 25 from Itararé River basin and two from Tibagi River basin. Results indicated low genetic diversity levels (HE = 0.334 and h = 0.246) for the sample from Cinzas River, suggesting reflections of a founder effect after the species had dispersed from one watershed to another, possibly by headwater captures. Since different populations were detected between the Cinzas and Itararé rivers (DEST = 0.248, P-value < 0.05) and other occurrence sites are still unknown in the Cinzas River basin, the data herein have great relevance and should be taken into account in future management and conservation actions, as well as in evolutionary studies of C. hypselurus. Brazil Upper River. . River) C analysis 5 analyzed 3 2 HE 0334 0 334 0.33 0.246 0246 246 another captures DEST 0248 248 0.248 Pvalue P value 0.05 005 05 actions 033 33 0.3 0.24 024 24 0.0 00 03 0. 0.2 02

https://doi.org/10.1590/1982-0224-2023-0007

Cáncer papilar de tiroides enmascarando tuberculosis ganglionar. Reporte de un caso y revisión de la literatura
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Azuara-Negrete, Néstor D.

; Monroy-Ramírez, Miguel Á.

; Carrasco-Tobón, José G.

; Llamas-Ceras, Martha L.

; Casoluengo-Guzmán, Carolina

; Velasco-Cabrera, José A.

; Manzo-Carballo, Ma. Fernanda

; Medina-Galindo, Julieta

; López-Cisneros, Gerardo

Gaceta mexicana de oncología

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2023, Volume 22 Suppl. 1 Pages 28 - 31

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen La linfadenitis tuberculosa es usualmente indistinguible de las formas de metástasis del carcinoma papilar de tiroides (CPT). Hombre de 31 años, presenta adenopatías cervicales con reporte de nódulo tiroideo TI-RADS (Thyroid Imaging Reporting and Data System) 5, con biopsia por aspiración con aguja fina positiva para CPT. Se realiza tiroidectomía con resección ganglionar con diagnóstico histopatológico negativo para metástasis, tinción Ziehl-Neelsen positiva. Se inicia manejo antituberculoso. La presentación típica de la linfadenitis tuberculosa cervical cuenta con características comunes con los ganglios metastásicos del CPT. La linfadenopatía cervical en un paciente con un CPT no siempre indica diseminación metastásica de la enfermedad.

Abstract Tuberculous lymphadenitis is usually indistinguishable from metastatic forms of papillary thyroid carcinoma (PTC). A 31-year-old man assessed for cervical lymphadenopathies with a TI-RADS (Thyroid Imaging Reporting and Data System) 5 ultrasound report of a thyroid nodule, with positive fine-needle aspiration biopsy for PTC. Thyroidectomy with lymph node resection was performed with report of lymph node with a result negative for metastasis, positive Ziehl-Neelsen. Antituberculous management is started. The typical presentation of cervical tuberculous lymphadenitis has features in common with metastatic PTC nodes. Cervical lymphadenopathy in a patient with a PTC does not always indicate metastatic spread of the disease.

https://doi.org/10.24875/j.gamo.22000070

Physioprophylaxis post-stress test in soccer players: effects blood lactate concentrations
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Manrique-Abril, Fred G.

; Arias López, Sandra E

; Melgarejo-Pinto, Victor M

; Galindo Guerra, Daniel

; Camargo Valencia, Andrea P

Revista Médica de Risaralda

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2022, Volume 28 N. 2 Pages 55 - 64

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Objetivo: Determinar los efectos de la fisioprofilaxis (PP) sobre las concentraciones de lactato en sangre (BL) tras la prueba de esfuerzo incremental máximo, considerando que se trata de la aplicación de técnicas en fisioterapia deportiva para reducir los signos de fatiga muscular que pueden desencadenar lesiones por sobrecarga. Materiales y métodos: Estudio cuantitativo, tipo experimental, sección longitudinal en 12 jugadores universitarios. El grupo se divide en un grupo control (GC) con recuperación en reposo sin PP y otro grupo experimental (GE) al que se aplica PP al final de la prueba. El lactato sanguíneo se registra con Accutrend Plus al inicio de la prueba, (1) cinco minutos después de finalizar la prueba (2) y después de la PP (3) en dos momentos diferentes para el análisis intra-sujeto. Resultados: Se obtuvieron los siguientes datos con respecto al aclaramiento de lactato en sangre, Momento 1: Sin Plan (WoP) 4.86 ± 1.4 y Con Plan (WP) 8.85 ± 1.25 (p <0.05), Momento 2: (WoP) 5.6 ± 1.76 y (WP) ) 7,8 ± 1,3 (p <0,05) en mmol / L, e intra-sujeto: (WoP): 5,25 ± 1,58; (WP): 8,35 ± 1,33 (p <0,05). Conclusiones: El aclaramiento de lactato en sangre a los 30 minutos post prueba de esfuerzo en el GE es mayor que en el GC, debido a que se recuperaron con el plan fisioprofiláctico.

Abstract Objective: To determine the effects of physioprophylaxis (PP) on blood lactate (BL) concentrations after maximal incremental stress test, considering that this is the application of techniques in sports physiotherapy to reduce signs of muscle fatigue that can trigger injuries due to overload. Materials and Methods: Quantitative study, experimental type, longitudinal section in 12 university players. The group is divided into one control group (CG) with recovery at rest without PP and another experimental group (EG) to which PP is applied at the end of the test. Blood lactate is recorded with Accutrend Plus at the beginning of the test, (1) five minutes after finishing the test (2) and after the PP (3) at two different moments for intra-subject analysis. Results: The following data were obtained regarding blood lactate clearance, Moment 1: Without Plan (WoP) 4.86±1.4 and With Plan (WP) 8.85±1.25 (p<0.05), moment 2: (WoP) 5.6±1.76 and (WP) 7.8±1.3 (p<0.05) in mmol/L, and intra-subject: (WoP): 5.25±1.58; (WP): 8.35±1.33 (p<0.05). Conclusions: The clearance of lactate in the blood at 30 minutes post stress test in the EG is bigger than the CG, because they recovered with the physioprophylactic plan.

https://doi.org/10.22517/25395203.24986

Pancreatitis post-colangiopancreatografía retrógrada endoscópica
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

López-Arce-Ángeles, Gustavo

; Manrique, Martín A.

; Chávez-García, Miguel A.

; Martínez-Galindo, María G.

; Ruiz-Romero, Daniel

; Téllez-Ávila, Félix I.

; Pérez-Valle, Ernesto

; Cerna-Cardona, Jony

Endoscopia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

sep 2022, Volume 34 N. 3 Pages 86 - 93

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen La pancreatitis post-CPRE (PPC) es la complicación más frecuente de la colangiopancreatografía endoscópica (CPRE), la cual ocurre en el 8 al 15% de los casos; el diagnóstico se establece con la presencia de dolor dentro de las siguientes 24 horas posterior al procedimiento acompañado de elevación de las enzimas pancreáticas (> 3 veces el valor normal). Se han identificado factores de riesgo del paciente (sexo femenino, edad < 60 años, episodios previos de PPC, sospecha de disfunción de esfínter de Oddi) y factores de riesgo asociados al procedimiento (canulación difícil, manometría del esfínter de Oddi, ampulectomía, opacificación y/o canulación del conducto pancreático, mayor número de intentos de canulación de la papila de Vater, esfinteroplastia hidroneumática). También se han investigado varias medidas profilácticas; sin embargo, las que han mostrado eficacia en la profilaxis para PPC se dividen en farmacológicas (antiinflamatorios no esteroideos por vía rectal) y no farmacológicas (precorte temprano, prótesis pancreática, hidratación endovenosa agresiva). Es importante identificar los factores de riesgo y llevar a cabo las medidas profilácticas necesarias para disminuir la incidencia de PPC.

Abstract Post-endoscopic retrograde cholangiopancreatography (ERCP) pancreatitis is the most common and serious complication of ERCP, its incidence varies from 8-15%; diagnosis is established with abdominal pain and elevated pancreatic enzymes (> 3 times upper limit value) the next 24 hours posterior to ERCP. There are some risk factors associated to patient (female gender, young age, previous post-ERCP pancreatitis, suspected of Oddi dysfunction) and risk factors related to procedure (difficult bile duct cannulation, ampullectomy, main pancreatic duct opacification, multiple attempts of cannulation, sphincteroplasty). Methods proven to reduce post-ERCP pancreatitis are pharmacological (rectal non-steroidal anti-inflammatory drugs) and non-pharmacological (Ringer lactate hyperhydration, early precut, pancreatic stent). It is very important to evaluate risk factors in order to apply necessary measures to reduce the incidence.

https://doi.org/10.24875/end.22000043

Prevención de eventos de superpropagación de COVID-19 en autobuses que transportaron pacientes presintomáticos
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Ochoa-Hein, Eric

; Huertas-Jiménez, Martha A.

; Chávez-Ríos, Alma R.

; Haro-Osnaya, Anabel

; De Paz-García, Roxana

; Colín-Ugalde, Alberto G.

; Leal-Morán, Patricia E.

; Vargas-Fernández, Abril T.

; Vargas-Fernández, José F.

; González-González, Ricardo

; Rajme-López, Sandra

; González-Lara, María F.

; Ponce-De León, Alfredo

; Sifuentes-Osornio, José

; Galindo-Fraga, Arturo

Gaceta médica de México

Journal Metrics
- Sobre o periódico
- SciELO Analytics

aug 2022, Volume 158 N. 4 Pages 204 - 209

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Introducción: Ha ocurrido superpropagación de COVID-19 cuando individuos sintomáticos sin uso de cubrebocas abordaron autobuses. Objetivo: Reportar el riesgo de superpropagación cuando individuos presintomáticos abordaron autobuses junto con pasajeros no vacunados, pero se mantuvieron intervenciones preventivas no farmacológicas. Métodos: Estudio prospectivo de personal de salud transportado durante dos semanas en autobuses a un centro de vacunación contra COVID-19. Fue obligatorio llevar ventanas abiertas, uso correcto de cubrebocas y exclusión de personas con síntomas. La vigilancia prospectiva identificó a trabajadores con COVID-19 los 14 días siguientes a la vacunación. Cada pasajero asintomático de autobuses donde se detectaron casos fue vigilado durante un periodo similar. Los resultados de tamizaje voluntario estuvieron disponibles para los trabajadores que se realizaron prueba el mes previo o el siguiente a la vacunación. Resultados: 1879 trabajadores abordaron 65 autobuses. El tiempo a bordo varió de tres a ocho horas. Veintinueve casos de COVID-19 y cuatro casos asintomáticos fueron identificados entre 613 pasajeros de 21 autobuses. La mediana de tiempo entre la vacunación y el inicio de síntomas de COVID-19 fue de seis días. Fue identificado un caso de transmisión sospechada en autobús. Conclusiones: Las intervenciones preventivas no farmacológicas estrictas redujeron sustancialmente el riesgo de superpropagación de COVID-19 en autobuses ocupados por individuos presintomáticos.

Abstract Introduction: COVID-19 superspreader events have occurred when symptomatic individuals without wearing face masks boarded buses. Objective: To report the risk of superspreader events when presymptomatic individuals boarded buses together with unvaccinated passengers, but with non-pharmacological preventive interventions being maintained. Methods: Prospective study of health personnel transported in buses to a COVID-19 vaccination center for two weeks. Open windows, correct use of face masks and exclusion of symptomatic individuals were mandatory. Prospective surveillance identified workers with COVID-19 within 14 days after vaccination. Each asymptomatic passenger of buses where cases were identified was monitored for a similar time period. Voluntary screening results were available for workers who were tested in the month before or after vaccination. Results: 1,879 workers boarded 65 buses. On-board time ranged from three to eight hours. Twenty-nine cases of COVID-19 and four asymptomatic cases were identified among 613 passengers of 21 buses. Median time between vaccination and COVID-19 symptoms onset was six days. One case of suspected transmission on a bus was identified. Conclusions: Strict nonpharmacological preventive interventions substantially reduced the risk of COVID-19 superspreader events in buses boarded by presymptomatic individuals.

https://doi.org/10.24875/gmm.21000772 23 downloads

Asymptomatic SARS-CoV-2 Infection in Havana, Cuba, March–June 2020: Epidemiological Implications
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Cruz-Rodríguez, Elba

; Baldoquín-Rodríguez, Waldemar

; Molina-Águila, Niurka

; Galindo-Santana, Belkys M.

; Romero-Placeres, Manuel

; González-Gross, Tania M.

; Morgado-Vega, Isabela

; Olivera-Nodarse, Yadira

; Guzmán, María G.

MEDICC Review

Journal Metrics
- Sobre o periódico
- SciELO Analytics

mar 2022, Volume 24 N. 1 Pages 21 - 27

Abstract: En | Text: En | PDF: En

Abstract INTRODUCTION The percentage of asymptomatic COVID-19 cases worldwide is estimated at 18–50%; 53% in Cuba specifically, and 58% in Havana, the Cuban capital and the 2020 epicenter of the country’s COVID-19 epidemic. These figures, however, do not represent the transmission capacity or behavior of asymptomatic cases. Understanding asymptomatic transmission’s contribution to SARS-CoV-2 spread is of great importance to disease control and prevention. OBJECTIVE Identify the epidemiological implications of asymptomatic SARS-CoV-2 infection in Havana, Cuba, during the first wave of the epidemic in 2020. METHODS We carried out a cross-sectional study of all confirmed COVID-19 cases diagnosed in Havana, Cuba, from March 16 through June 30, 2020. The information was obtained through review of the standardized form for investigation of suspected and confirmed cases. Examined variables included age, sex, occupation, case type and source of infection. Cases were divided into asymptomatic and symptomatic groups, and transmission was characterized through the creation of a contact matrix. Analysis was carried out in Epidat and R. RESULTS We studied 1287 confirmed cases, of which 57.7% (743) were asymptomatic, and 42.3% (544) were symptomatic. Symptomatic presentation was the most common for both imported and introduced cases, while asymptomatic presentation was more common in autochthonic cases and infections from an undetermined source. Asymptomatic infection was more common in groups aged <20 and 20–59 years, while symptomatic infection was more common in those aged >60 years. In the contact matrix, 34.6% of cases (445/1287) were not tied to other cases, and 65.4% (842/1287) were infectious–infected dyads, with symptomatic–symptomatic being the most common combination. The majority of primary cases (78.5%; 1002/1276) did not generate secondary cases, and 85.6% (658/743) of asymptomatic cases did not lead to other cases (although one asymptomatic superspreader led to 90 cases in a single event). However, 63.2% (344/544) of symptomatic primary cases generated secondary cases, and 11 symptomatic superspreaders spawned 100 secondary cases in different events. CONCLUSIONS Asymptomatic SARS-CoV-2 infection was the most common form of COVID-19 in Havana during the study period, but its capacity for contagion was lower than that of symptomatic individuals. Superspreader events under specific conditions played an important role in sustaining the epidemic.

https://doi.org/10.37757/mr2022.v24.n1.4

10.

Los mármoles cálcicos de El Escorial (complejo metamórfico Cushamen, macizo norpatagónico): caracterización isotópica de 87Sr/86Sr y edad de sedimentación
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Murra, Juan A.

; Baldo, Edgardo G.

; Verdecchia, Sebastián O.

; Ramacciotti, Carlos D.

; Galindo, Carmen

Andean geology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

jan 2022, Volume 49 N. 1 Pages 77 - 93

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

ABSTRACT The El Escorial marbles (Cushamen Metamorphic Complex) along with amphibolites form metamorphic septa within the permian granitoids of the Mamil Choique Formation (261-286 Ma). The metamorphism, determined in granulite facies migmatic gneisses septa cropping out 120 km southwest of El Escorial, occurs at 311±27 Ma (CHIME method in monazite). The marbles are calcitic (calcite >95%, R.I.: 0.5 to 2.5%) and show 87Sr/86Sr ratios between 0.70768 and 0.70825 (n=10). The data provided in this work, added to previous contributions, allow to constraints the sedimentation age of the silicic-carbonate successions of the Cushamen Metamorphic Complex between ca. 385 and 335 Ma. This suggests the existence of a mixed carbonate-siliciclastic platform at least in the southernmost portion of southwestern Gondwana between Middle Devonian and early Carboniferous (Middle Mississippian).

RESUMEN: Los mármoles de El Escorial (Complejo Metamórfico Cushamen) se encuentran asociados a anfibolitas que forman septos metamórficos dentro de los granitoides pérmicos de la Formación Mamil Choique (261-286 Ma). El metamorfismo de los septos, determinado en gneises migmáticos en facies de granulita aflorantes 120 km al suroeste de El Escorial, ocurre a los 311±27 Ma (método CHIME en monacita). Los mármoles son de composición calcítica (calcita >95%, R.I.: 0,5 a 2,5%) y presentan razones de 87Sr/86Sr entre 0,70768 y 0,70825 (n=10). Los datos aportados en este trabajo, sumado a contribuciones previas, permiten acotar la edad de sedimentación de las sucesiones silícico-carbonáticas del Complejo Metamórfico Cushamen entre los ca. 385 y 335 Ma. Esto sugiere la existencia de una plataforma mixta (carbonática-siliciclástica) al menos en la porción más austral del suroeste de Gondwana entre el Devónico Medio y el Carbonífero inferior (Misisipiano Medio).

https://doi.org/10.5027/andgeov49n1-3387 10 downloads

11.

Consenso de leucemia mieloide aguda en México
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Arana-Luna, Luara L.

; Alvarado-Ibarra, Martha

; Silva-Michel, Luis G.

; Morales-Maravilla, Adrián

; González-Rubio, María del C.

; Chávez-Aguilar, Lénica A.

; Tena-Iturralde, María Fernanda

; Mojica-Balceras, Liliana

; Zapata-Canto, Nidia

; Galindo-Delgado, Patricia

; Miranda-Madrazo, María Raquel

; Morales-Hernández, Alba E.

; Silva-Vera, Karina

; Grimaldo-Gómez, Flavio A.

; Hernández-Caballero, Álvaro

; Bates-Martin, Ramón A.

; Álvarez-Vera, José L.

; Tepepa-Flores, Fredy

; Teomitzi-Sánchez, Óscar

; Fermín-Caminero, Denisse J.

; Peña-Celaya, José A. de la

; Salazar-Ramírez, Óscar

; Flores-Villegas, Luz V.

; Guerra-Alarcón, Lidia V.

; Leyto-Cruz, Faustino

; Inclán-Alarcón, Sergio I.

; Milán-Salvatierra, Andrea I.

; Ventura-Enríquez, Yanet

; Pérez-Lozano, Uendy

; Báez-Islas, Pamela E.

; Tapia-Enríquez, Ana L.

; Palma-Moreno, Orlando G.

; Aguilar-Luévano, Jocelyn

; Espinosa-Partida, Arturo

; Pérez-Jacobo, Luis F.

; Rojas-Castillejos, Flavio

; Ruiz-Contreras, Josué I.

; Loera-Fragoso, Sergio J.

; Medina-Coral, Jesús E.

; Acosta-Maldonado, Brenda L.

; Soriano-Mercedes, Emely J.

; Saucedo-Montes, Erick E.

; Valero-Saldana, Luis M.

; González-Prieto, Susana G.

; Nava-Villegas, Lorena

; Hernández-Colin, Ana K.

; Hernández-Alcántara, Areli E.

; Zárate-Rodríguez, Pedro A.

; Ignacio-Ibarra, Gregorio

; Meillón-García, Luis A.

; Espinosa-Bautista, Karla A.

; Ledesma de la Cruz, Cindy

; Barbosa-Loría, Diego M.

; García-Castillo, Carolina

; Balderas-Delgado, Carolina

; Cabrera-García, Álvaro

; Pérez-Zúñiga, Juan M.

; Hernández-Ruiz, Eleazar

; Villela-Peña, Atenas

; Gómez Cortés, Sue Cynthia

; Romero-Rodelo, Hilda

; Garzón-Velásquez, Katheryn B.

; Serrano-Hernández, Cristina

; Martínez-Ríos, Annel

; Pedraza-Solís, María Luisa

; Martínez-Coronel, Jorge A.

; Narváez-Davalos, Iris M.

; García-Camacho, Alinka S.

; Merino-Pasaye, Laura E.

; Aguilar-Andrade, Carolina

; Aguirre-Domínguez, Juan A.

; Guzmán-Mera, Pedro G.

; Delgado-de la Rosa, Elizabeth

; Flores López, Perla E.

; González-Aguirre, Lilia L.

; Ramírez-Alfaro, Edgar M.

; Vera-Calderón, Heidi

; Meza-Dávalos, María Lizeth

; Murillo-Cruz, Juan

; Pichardo-Cepín, Yayra M.

; Ramírez-Romero, Eva F.

Gaceta médica de México

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 158 N. spe3 Pages M1 - M51

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Abstract Acute myeloid leukemia (AML) comprises a heterogeneous group of hematopoietic cell neoplasms of myeloid lineage that arise from the clonal expansion of their precursors in the bone marrow, interfering with cell differentiation, leading to a syndrome of bone marrow failure. AML is a consequence of genetic and epigenetic changes (point mutations, gene rearrangements, deletions, amplifications, and arrangements in epigenetic changes that influence gene expression) in hematopoietic precursor cells, which create a clone of abnormal cells that are capable of proliferating but cannot differentiate into mature hematopoietic cells or undergo programmed cell death. The diagnosis requires more than 20% myeloid blasts in the bone marrow and certain cytogenic abnormalities. Treatment will depend on age, comorbidities, and cytogenetic risk among the most frequent.

resumen está disponible en el texto completo

https://doi.org/10.24875/gmm.m21000597 895 downloads

12.

Simplified acute physiology score II and Mannheim peritonitis index are associated with in-hospital mortality in patients with abdominal sepsis admitted to ICU
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Sánchez-Díaz, Jesús S.

; Escarraman-Martínez, Diego

; Guerrero-Gutiérrez, Manuel A.

; Meza-Comparán, Héctor D.

; Mancilla-Galindo, Javier

; Peniche-Moguel, Karla G.

; González-Escudero, Eduardo A.

; Carpio-Orantes, Luis del

; Monares-Zepeda, Enrique

; Perez-Nieto, Orlando R.

; Zamarrón-López, Eder I.

; Deloya-Tomas, Ernesto

; Calyeca-Sanchez, Verónica

; Kammar-García, Ashuin

Cirugía y cirujanos

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 90 Suppl. 2 Pages 81 - 91

Abstract: Es En | Text: Es En | PDF: Es | PDF: En

Resumen Objetivo: Evaluar la asociación e interacción de los parámetros de laboratorio, SAPSII, MSI y MPI con la mortalidad intrahospitalaria. Materiales y métodos: Nosotros realizamos un estudio de casos y controles de pacientes adultos con sepsis abdominal desde mayo 2015 a mayo 2020. Recolectamos las características basales, parámetros de laboratorio, SAPSII, MSI y MPI al ingreso. Se aplicó un Análisis de Componentes Principales. El riesgo de mortalidad intrahospitalaria se determinó mediante modelos de regresión logística. Resultados: Identificamos 127 pacientes, 60 de los cuales se incluyeron. Los no supervivientes (48,4%) tuvieron mayor frecuencia de HAS, lactato y MPI, y menores niveles de EB y EB aláctico. Se obtuvieron ocho Componentes Principales (PC), siendo PC1 una combinación lineal de pH, AG, cAG, EB aláctico, bicarbonato y EB. MPI (OR = 9.87, IC95%: 3.07-36.61, p = 0.0002), SAPSII (OR = 1.07, IC95%: 1.01-1.14, p = 0.01) y PC1 (OR = 2.13, IC95%: 1.12-4.76, p = 0.04) se asociaron significativamente con la mortalidad en el análisis univariado, mientras que MPI (OR = 10.1, IC95%: 3.03-40.06, p = 0.0003) y SAPSII (OR = 1.07, IC 95%: 1.01-1.14, p = 0.02) permanecieron significativos después del ajuste por edad y sexo. Conclusiones: MPI y SAPSII se asociaron con mortalidad, aunque la interacción de los parámetros de laboratorio no lo hizo.

Abstract Objective: The objective of this study was to assess the association and interaction of laboratory parameters, Simplified Acute Physiology Score II (SAPSII), Modified Shock Index (MSI), and Mannheim Peritonitis Index (MPI) with in-hospital mortality. Material and methods: We conducted a single-center case–control study. Adult patients with abdominal sepsis were included from May 2015 to May 2020. Baseline characteristics, laboratory parameters, SAPSII, MSI, and MPI scores at admission were collected. A principal component (PC) analysis was applied to evaluate variable interactions. In-hospital mortality risk was determined through logistic regression models. Results: One hundred and twenty-seven patients were identified, 60 of which were included for analyses. Non-survivors (48.4%) had a higher frequency of hypertension, lactate and MPI, and lower BE and alactic BE levels. Eight PCs were obtained, PC1 being a linear combination of pH, AG, cAG, alactic BE, bicarbonate, and BE. MPI (OR = 9.87, 95% CI: 3.07-36.61, p = 0.0002), SAPSII (OR = 1.07, 95% CI: 1.01-1.14, p = 0.01), and PC1 (OR = 2.13, 95% CI: 1.12-4.76, p = 0.04) were significantly associated with mortality in univariate analysis, while MPI (OR = 10.1, 95% CI: 3.03-40.06, p = 0.0003) and SAPSII (OR = 1.07, CI95%: 1.01–1.14, p = 0.02) remained significant after adjusting for age and sex. Conclusion: MPI and SAPSII were associated with mortality, although the interaction of laboratory parameters was not.

https://doi.org/10.24875/ciru.22000219

13.

Doping lanthanum manganites particles with strontium-calcium for application in hyperthermia
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Rivera Rios, L.

; Perez, I.

; Elizalde-Galindo, J. T.

; Farias, R.

; Mani-Gonzalez, P. G.

Journal of applied research and technology

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2022, Volume 20 N. 4 Pages 481 - 486

Abstract: En | Text: En | PDF: En

Abstract: The use of materials capable of controlling the threshold temperature required in hyperthermia, as well as meeting desired requirements in biomedical applications is still a challenge. In the present study, strontium doped calcium lanthanum manganites La0.7Ca0.3-xSrxMnO3 (x=0, 0.1, 0.15 and 0.2) were synthesized by co-precipitation method. Vibrating sample magnetometry (VSM) was used to study the effect of Ca-Sr ratio change on magnetic properties. The Curie temperature (Tc) increases from 272 to 315 K as the concentration increases from x=0 to x=0.2, respectively. Hence the strontium amount plays an essential role in achieving the desired Tc. X-ray diffraction (XRD) was used to identify the rhombohedral structure and scanning electronic microscopy (SEM) was used to characterize the cubic morphology and determinate the average particles size around 800 nm.

https://doi.org/10.22201/icat.24486736e.2022.20.3.1405

14.

Evaluación del desarrollo y la estabilidad de una nanoemulsión de vainilla ( Vanilla planifolia) a partir de un extracto no alcohólico
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

Mendoza Sánchez, Liliana G.

; Rodríguez España, Melissa

; Martínez Rodríguez, Javier

; García Galindo, Hugo S.

; Cruz Medina, Javier De la

; Cano Sarmiento, Cynthia

; Monroy Rivera, José A.

Biotecnia

Journal Metrics
- Sobre o periódico
- SciELO Analytics

2021, Volume 23 N. 3 Pages 22 - 29

Abstract: En Es | Text: En Es | PDF: En | PDF: Es

Abstract Vanilla (Vanilla planifolia) is considered the most important flavoring in the world. However, its application in foods is limited, since it is mainly commercialized as ethanolic extracts, due to its lipophilic naturalization. The objective of this work was to elaborate alcohol-free vanilla nanoemulsions, from a natural extract by means of high pressure homogenization, as a strategy to improve its solubility and stability. The effects of pressure and number of cycles were evaluated by means of a 23*3 factorial design. The optimal emulsions were stored at 15, 25 and 35 °C for 42 days. The obtained emulsions were evaluated for particle size and stability index (TSI). The optimum formulation to prepare a stable emulsion without sugar required 5 cycles at a pressure of 40 MPa, while for the emulsion with sugar, 9 cycles were necessary at a pressure of 20 MPa; with a content of 17 % glycerol. The emulsion remained stable at 15 and 25 °C for 42 days. The findings of this study will lead to the possibility for the use of this formulation as a method to improve its solubility and stability.

Resumen La vainilla (Vainilla planifolia) es considerada como el saborizante de mayor importancia en el mundo. Sin embargo, su aplicación en alimentos está limitada, ya que se comercializa principalmente como extractos etanólicos, debido a su naturaleza lipofílica. El objetivo de este trabajo fue elaborar nanoemulsiones de vainilla libre de alcohol, a partir de un extracto natural mediante homogenización por altas presiones, como estrategia para mejorar su solubilidad y estabilidad. El efecto de la presión y el número de ciclos se evaluaron mediante un diseño factorial de 23*3. Las emulsiones óptimas se almacenaron a 15, 25 y 35 °C durante 42 días. A las emulsiones obtenidas se les evaluó tamaño de partícula e índice de estabilidad (TSI). La formulación óptima para generar una emulsión estable sin azúcar requirió 5 ciclos a una presión de 40 MPa, mientras que para la emulsión con azúcar fueron necesarios 9 ciclos a una presión de 20 Mpa, con un contenido de 17 % de glicerol. La emulsión se mantuvo estable a 15 y 25 ºC durante 42 días. Los hallazgos de este estudio conducirán a la posibilidad de que esta formulación se utilice como uno de los métodos para mejorar su solubilidad y estabilidad.

https://doi.org/10.18633/biotecnia.v23i3.1409 46 downloads

15.

Analysis in the generation of reactive oxygen species through the interaction between the secondary radiation of the compound system (cisplatin and silica nanoparticle) and intracellular water
Facebook Twitter

Other social networks
Google+
LinkedIn
Reddit
StambleUpon
CiteULike
Mendeley
Other networks

Metrics
- SciELO Analytics
- Dimensions
- PlumX
- Altmetric

López-Laurrabaquio, G.

; Cruz-Galindo, H. S.

; Moranchely y Rodríguez, M.

; Montejano Carrizales, J. M.

; Domínguez Kondo, J. N.

; Cruces Martínez, M. P.

Revista mexicana de física

Journal Metrics
- Sobre o periódico
- SciELO Analytics

dec 2020, Volume 66 N. 6 Pages 797 - 802

Abstract: En | Text: En | PDF: En

Abstract Through computer simulations of Monte Carlo (TOPAS-nBio code), the generation of reactive oxygen species will be analyzed when applying external radiation with electrons which energy is 5 keV to the physical system: composite system and intracellular water. This study of the generation of reactive species was focused exclusively on the interaction between secondary radiation from the composite system and intracellular water. This secondary radiation originates from the platinum atom and oxygens (from the composite system) to be the greater influence relative to platinum, which mainly consists of electrons called Auger. In this work, only the influence of these ionizing electrons in intracellular water is considered, leading to the generation of reactive oxygen species. Furthermore, the interaction between the nanoparticle surface and cisplatin was not taken into account.

https://doi.org/10.31349/revmexfis.66.797 17 downloads

Showing

itens per page

Page of 5 Next

Select one or more results

All Alphabetic

Results

Comparative chart Download CSV

Statistics of

Send result

To*

Use ; (semicolon) to insert more emails.

Send to email

This page

Selected records

All references (max. 300)

Your email

Subject

Comments

Export format:

RIS (for EndNote, ProCite, Reference Manager, RefWorks, Citavi, etc.)

BibTeX

Citation

CSV (for Excel, etc)

Export:

This page

Selected itens

All references (max. 2000)

Sem resultados

No documents were found for your search

Glossary and search help

You can enrich your search in a very simple way. Use the search indexes combined with the connectors (AND or OR) and specify more your search.

For example, if you want to search for articles about
cases of dengue in Brasil in 2015, use:
ti:dengue and publication_year:2015 and aff_country:Brasil

See below the complete list of search indexes that can be used:

Index code	Element
ti	article title
au	author
kw	article keywords
subject	subject (title words, abstract and keywords)
ab	abstract
ta	journal short title (e.g. Cad. Saúde Pública)
journal_title	journal full title (e.g. Cadernos de Saúde Pública)
la	publication language code (e.g. pt - Portuguese, es - Spanish)
type	document type
pid	publication identifier
publication_year	publication year of publication
sponsor	sponsor
aff_country	country code of the author's affiliation
aff_institution	author affiliation institution
volume	article volume
issue	article issue
elocation	elocation
doi	DOI number
issn	journal ISSN
in	SciELO colection code (e.g. scl - Brasil, col - Colômbia)
use_license	article usage license code

SciELO - Scientific Electronic Library Online
Rua Dr. Diogo de Faria, 1087 – 9º andar – Vila Clementino 04037-003 São Paulo/SP - Brasil
Email: scielo@scielo.org

All the contents of this site www.scielo.br, except where otherwise noted, is licensed under a Creative Commons Attribution License.
more »