Publications by authors named "Olga Karina Villanueva-Segura"

Introduction: Ursus americanus Pallas 1780 is the largest carnivore and the only ursid in Mexico. It is considered an endangered species in the country because its distribution and population have been reduced by up to 80% because of habitat loss or furtive hunting. These problems can lead to a diet change, which could result in metabolic disorders, such as fatty acid β-oxidation defects or organic acid metabolism disorders.

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Aedes is a mosquito that transmits viral diseases such as dengue, chikungunya, Zika, and yellow fever. The insect's microbiota is recognized for regulating several biological processes, including digestion, metabolism, egg production, development, and immune response. However, the role of the bacteria involved in insecticide susceptibility has not been established.

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Aedes aegypti L. is the most important vector of arboviruses such as dengue, Zika, chikungunya, Mayaro, and yellow fever, which impact millions of people's health per year. MicroRNA profile has been described in some mosquito species as being important for biological processes such as digestion of blood, oviposition, sexual differentiation, insecticide resistance, and pathogens dissemination.

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Article Synopsis
  • The study focused on Aedes aegypti, the main mosquito responsible for spreading diseases like dengue and Zika, revealing that these populations in Mexico have developed high levels of resistance to commonly used insecticides (pyrethroids).
  • Results showed that all tested populations were resistant to various pyrethroids, with specific genetic mutations (kdr mutations V1016I and F1534C) linked to the observed resistance levels in bioassays.
  • The findings emphasize the importance of monitoring genetic resistance alongside traditional insecticide testing to effectively manage and control mosquito populations and the diseases they transmit.
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Culex quinquefasciatus Say is a vector of many pathogens of humans, and both domestic and wild animals. Personal protection, reduction of larval habitats, and chemical control are the best ways to reduce mosquito bites and, therefore, the transmission of mosquito-borne pathogens. Currently, to reduce the risk of transmission, the pyrethroids, and other insecticide groups have been extensively used to control both larvae and adult mosquitoes.

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