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Effect of juvenile hormone on phenoloxidase and hemocyte number: The role of age, sex, and immune challenge.
Amaro-Sánchez, Tania; Ruiz-Guzmán, Gloria; Hernández-Martínez, Salvador; Krams, Indrikis; Rantala, Markus J; Contreras-Garduño, Jorge.
Afiliação
  • Amaro-Sánchez T; Departamento de Biología, División de Ciencias Naturales y Exactas, Universidad de Guanajuato, Campus Guanajuato, Noria Alta s/n, Colonia Noria Alta, 36050 Guanajuato, Mexico.
  • Ruiz-Guzmán G; Escuela Nacional de Estudios Superiores, Unidad Morelia, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro No.8701, Col. Ex-Hacienda San José de la Huerta, 58190 Morelia, Michoacán, Mexico.
  • Hernández-Martínez S; Centro de Investigaciones sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, 62300 Cuernavaca, Morelos, Mexico.
  • Krams I; Institute of Ecology and Earth Sciences, University of Tartu, Vanemuise 46, 51014 Tartu, Estonia; Department of Biotechnology, Daugavpils University, Daugavpils 5401, Latvia; Department of Zoology and Animal Ecology, Faculty of Biology, University of Latvia, Riga 1004, Latvia.
  • Rantala MJ; Department of Biology & Turku Brain and Mind Center, University of Turku, Turku, Finland.
  • Contreras-Garduño J; Escuela Nacional de Estudios Superiores, Unidad Morelia, Universidad Nacional Autónoma de México, Antigua Carretera a Pátzcuaro No.8701, Col. Ex-Hacienda San José de la Huerta, 58190 Morelia, Michoacán, Mexico. Electronic address: jcg@enesmorelia.unam.mx.
Comp Biochem Physiol B Biochem Mol Biol ; 265: 110827, 2023.
Article em En | MEDLINE | ID: mdl-36610635
Hormones are key factors in determining the response of organisms to their environment. For example, the juvenile hormone (JH) coordinates the insects' development, reproduction, and survival. However, it is still unclear how the impact of juvenile hormone on insect immunity varies depending on the sex and reproductive state of the individual, as well as the type of the immune challenge (i.e., Gram-positive or Gram-negative bacteria). We used Tenebrio molitor and methoprene, a JH analog (JHa) to explore these relationships. We tested the effect of methoprene on phenoloxidase activity (PO), an important component of humoral immunity in insects, and hemocyte number. Lyophilized Gram-positive Staphylococcus aureus or Gram-negative Escherichia coli were injected for the immune challenge. The results suggest that JH did not affect the proPO, PO activity, or hemocyte number of larvae. JH and immune challenge affected the immune response and consequently, affected adult developmental stage and sex. We propose that the influence of JH on the immune response depends on age, sex, the immune response parameter, and the immune challenge, which may explain the contrasting results about the role of JH in the insect immune response.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hormônios Juvenis / Metoprene Limite: Animals Idioma: En Revista: Comp Biochem Physiol B Biochem Mol Biol Assunto da revista: BIOLOGIA MOLECULAR / BIOQUIMICA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: México País de publicação: Reino Unido
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Hormônios Juvenis / Metoprene Limite: Animals Idioma: En Revista: Comp Biochem Physiol B Biochem Mol Biol Assunto da revista: BIOLOGIA MOLECULAR / BIOQUIMICA Ano de publicação: 2023 Tipo de documento: Article País de afiliação: México País de publicação: Reino Unido