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Your search keyword '"Segura Guerrero, Nidya Alexandra"' showing total 6 results
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6 results on '"Segura Guerrero, Nidya Alexandra"'

2. Natural extracts as a sustainable alternative for the control of Aedes aegypti: an updated review.

Author

Pardo Cuervo, Oscar H., Barrera Martínez, Laura Valentina, Jiménez Camacho, Ingrid Dayana, Martínez Gordon, Andrea Camila, Figueredo López, Edwin Alejandro, and Segura Guerrero, Nidya Alexandra

Subjects
AEDES aegypti, BIOLOGICAL insecticides, YELLOW fever, PLANT extracts, NUMBERS of species, MOSQUITO control
Abstract

Copyright of Revista de Ciencias Agroveterinarias is the property of Revista de Ciencias Agroveterinarias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2024
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4. Descripción morfológica de Lucilia purpurascens (Walker, 1836) (Diptera: Calliphoridae), cepa Boyacá-Colombia.

Author

Mancipe Villamarin, Ángela Patricia and Segura Guerrero, Nidya Alexandra

Subjects
*SEXUAL dimorphism, *BLOWFLIES, *FORENSIC entomology, *ADULTS, *LARVAE, *MALES, *FEMALES, BEETLE anatomy
Abstract

Flies of the family Calliphoridae are relevant in medico-legal investigations. Lucilia purpurascens is a specie belonging to this family which has been reported in different countries, including Colombia. Although there are records for Boyacá, there are no scientific publications to support them. The genus Lucilia has challenges in taxonomically separating its species due to synonyms, and L. purpurascens is an example of this. taking into account the above, the study aimed to identify and describe the main morphological characteristics of L. purpurascens from the Department of Boyacá. Adults, including males and females from L. purpurascens were collected and colonized under laboratory conditions. Daily individuals of all stages of development were taken out. Larvae were rinsed and fixed on permanent plates. A distinctive feature of the third-instar larva was the pattern of double-ended spines. Regarding adults, there was a marked sexual dimorphism, evident in the silver parafacial in males and orange in females, as well as a difference in the size of the mean ocellus. In general, taxonomic characters of the calyptras, ampulla, and wings were described, which combined are relevant for the taxonomic identification of the species using both males and females. The characters were registered photographically, which will facilitate the correct identification through traditional taxonomy. The present work presents for the first time the complete description of the female of L. purpurascens. [ABSTRACT FROM AUTHOR]

Published
2023
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5. The use of insect cells to identify potent and selective inhibitors of the replication of the Dengue and Chikungunya viruses and unravel their molecular mechanism of action

Author

Segura Guerrero, Nidya Alexandra, Bello García, Felio Jesús, and Neyts, Johan

Subjects
Dengue, Control de Vectores, Favipiravir, viruses, virus diseases, Chikungunya, Cell culture, Cultivo de células, Virus Chikungunya, Mechanism of action, biochemical phenomena, metabolism, and nutrition, Enfermedades
Abstract

Dengue and Chikungunya viruses cause the most important arthropod-borne viral infections for humans. These viruses are predominant in tropical and subtropical regions. In addition, these viruses are predominant in tropical and subtropical regions. Dengue mortality rate is around 1.2 to 3.5% and deaths due to chikungunya fever are around 1 in 1000; however, half of chikungunya-infected patients evolve into a chronic state that can persist for months up to years. There are no antiviral drugs available for DENV and CHIKV treatment and prevention. Moreover, vector control strategies have failed so far. Thus, the development of potent inhibitors for a broad spectrum of RNA viruses is urgently needed. We established and characterized a new embryonic insect cell line from Culex quinquefasciatus mosquito. Also we established the flaviviruses and alphavirus replication, both in C6/36 and Lulo insect cell lines, as well as in Vero cell line. In addition we carried out a reference compound library and reference panel of assays and data for DENV, which provides a benchmark for further studies. During this study, a panel of 9 antiviral molecules, with proven in vitro anti-dengue virus activity and that act at different stages of the DENV life cycle, was selected. Finally, Favipiravir or T-705, was identified as inhibitor in vitro and in vivo of alphaviruses and the mutation K291R in nsP4, which is responsible of the polymerase activity, was found as the mode of action in CHIKV. Interestingly, lysine in motif F1 is also highly conserved in positive-stranded RNA viruses and this might explain the broad spectrum of T-705 antiviral activity. Colciencias Erasmus Mundus KU Leuven

Published
2015
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6. The use of insect cells to identify potent and selective inhibitors of the replication of the Dengue and Chikungunya viruses and unravel their molecular mechanism of action

Author

Bello, Felio, Neyts, Johan, Segura Guerrero, Nidya Alexandra, Bello, Felio, Neyts, Johan, and Segura Guerrero, Nidya Alexandra

Abstract

Dengue and Chikungunya viruses cause the most important arthropod-borne viral infections for humans. These viruses are predominant in tropical and subtropical regions. In addition, these viruses are predominant in tropical and subtropical regions. Dengue mortality rate is around 1.2 to 3.5% and deaths due to chikungunya fever are around 1 in 1000; however, half of chikungunya-infected patients evolve into a chronic state that can persist for months up to years. There are no antiviral drugs available for DENV and CHIKV treatment and prevention. Moreover, vector control strategies have failed so far. Thus, the development of potent inhibitors for a broad spectrum of RNA viruses is urgently needed. We established and characterized a new embryonic insect cell line from Culex quinquefasciatus mosquito. Also we established the flaviviruses and alphavirus replication, both in C6/36 and Lulo insect cell lines, as well as in Vero cell line. In addition we carried out a reference compound library and reference panel of assays and data for DENV, which provides a benchmark for further studies. During this study, a panel of 9 antiviral molecules, with proven in vitro anti-dengue virus activity and that act at different stages of the DENV life cycle, was selected. Finally, Favipiravir or T-705, was identified as inhibitor in vitro and in vivo of alphaviruses and the mutation K291R in nsP4, which is responsible of the polymerase activity, was found as the mode of action in CHIKV. Interestingly, lysine in motif F1 is also highly conserved in positive-stranded RNA viruses and this might explain the broad spectrum of T-705 antiviral activity., Colciencias, Erasmus Mundus, KU Leuven

Published
2015

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