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Interaction between Angiotensinase Activities in Pituitary and Adrenal Glands of Wistar-Kyoto and Spontaneously Hypertensive Rats under Hypotensive or Hypertensive Treatments.
Segarra, Ana B; Prieto, Isabel; Banegas, Inmaculada; Martínez-Cañamero, Magdalena; Villarejo, Ana B; Domínguez-Vías, Germán; de Gasparo, Marc; Ramírez-Sánchez, Manuel.
Afiliación
  • Segarra AB; Department of Health Sciences, University of Jaén, 23071 Jaén, Spain.
  • Prieto I; Department of Health Sciences, University of Jaén, 23071 Jaén, Spain.
  • Banegas I; Department of Health Sciences, University of Jaén, 23071 Jaén, Spain.
  • Martínez-Cañamero M; Department of Health Sciences, University of Jaén, 23071 Jaén, Spain.
  • Villarejo AB; Department of Health Sciences, University of Jaén, 23071 Jaén, Spain.
  • Domínguez-Vías G; Department of Physiology, Faculty of Health Sciences, Ceuta, University of Granada, 18071 Granada, Spain.
  • de Gasparo M; Cardiovascular & Metabolic Syndrome Adviser, Rue es Planches 5, 2842 Rossemaison, Switzerland.
  • Ramírez-Sánchez M; Department of Health Sciences, University of Jaén, 23071 Jaén, Spain.
Int J Mol Sci ; 22(15)2021 Jul 22.
Article en En | MEDLINE | ID: mdl-34360587
In the present study, we analyzed the activity of several aminopeptidases (angiotensinases) involved in the metabolism of various angiotensin peptides, in pituitary and adrenal glands of untreated Wistar-Kyoto (WKY) and spontaneously hypertensive rats (SHR) or treated with the antihypertensive drugs captopril and propranolol or with the L-Arginine hypertensive analogue L-NG-Nitroarginine Methyl Ester (L-NAME). Intra- and inter-gland correlations between angiotensinase activities were also calculated. Membrane-bound alanyl-, cystinyl-, and glutamyl-aminopeptidase activities were determined fluorometrically using aminoacyl-ß-naphthylamide as substrates. Depending on the type of angiotensinase analyzed, the results reflect a complex picture showing substantial differences between glands, strains, and treatments. Alanyl-aminopeptidase responsible for the metabolism of Ang III to Ang IV appears to be the most active angiotensinase in both pituitary and adrenals of WKY and particularly in SHR. Independently of treatment, most positive correlations are observed in the pituitary gland of WKY whereas such positive correlations are predominant in adrenals of SHR. Negative inter-gland correlations were observed in control SHR and L-NAME treated WKY. Positive inter-gland correlations were observed in captopril-treated SHR and propranolol-treated WKY. These results may reflect additional mechanisms for increasing or decreasing systolic blood pressure in WKY or SHR.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Endopeptidasas / Hipófisis / Glándulas Suprarrenales / NG-Nitroarginina Metil Éster / Hipertensión / Hipotensión / Antihipertensivos Límite: Animals Idioma: En Revista: Int J Mol Sci Año: 2021 Tipo del documento: Article País de afiliación: España Pais de publicación: Suiza
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Endopeptidasas / Hipófisis / Glándulas Suprarrenales / NG-Nitroarginina Metil Éster / Hipertensión / Hipotensión / Antihipertensivos Límite: Animals Idioma: En Revista: Int J Mol Sci Año: 2021 Tipo del documento: Article País de afiliación: España Pais de publicación: Suiza