Eucalyptol Ameliorates Dysfunction of Actin Cytoskeleton Formation and Focal Adhesion Assembly in Glucose-Loaded Podocytes and Diabetic Kidney.
Mol Nutr Food Res
; 63(22): e1900489, 2019 11.
Article
en En
| MEDLINE
| ID: mdl-31483951
ABSTRACT
SCOPE Podocytes are a component of glomerular filtration barrier with interdigitating foot processes. The podocyte function depends on the dynamics of actin cytoskeletal and focal adhesion crucial for foot process structure. This study investigates the renoprotective effects of eucalyptol on the F-actin cytoskeleton formation and focal adhesion assembly in glucose-loaded podocytes and diabetic kidneys. METHODS AND RESULTS:
Eucalyptol at 1-20 µm reverses the reduction of cellular level of F-actin, ezrin, cortactin, and Arp2/3 in 33 mm glucose-loaded mouse podocytes, and oral administration of 10 mg kg-1 eucalyptol elevates tissue levels of actin cytoskeletal proteins reduced in db/db mouse kidneys. Eucalyptol inhibits podocyte morphological changes, showing F-actin cytoskeleton formation in cortical regions and agminated F-actin along the cell periphery. Eucalyptol induces focal adhesion proteins of paxillin, vinculin, talin1, FAK, and Src in glucose-exposed podocytes and diabetic kidneys. Additionally, GTP-binding Rac1, Cdc42, Rho A, and ROCK are upregulated in glucose-stimulated podocytes and diabetic kidneys, which is attenuated by supplying eucalyptol. Rho A gene depletion partially diminishes GSK3ß induction of podocytes by glucose.CONCLUSION:
Eucalyptol ameliorates F-actin cytoskeleton formation and focal adhesion assembly through blockade of the Rho signaling pathway, entailing partial involvement of GSK3ß, which may inhibit barrier dysfunction of podocytes and resultant proteinuria.Palabras clave
Texto completo:
1
Base de datos:
MEDLINE
Asunto principal:
Citoesqueleto de Actina
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Adhesiones Focales
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Nefropatías Diabéticas
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Podocitos
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Eucaliptol
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Glucosa
Idioma:
En
Revista:
Mol Nutr Food Res
Asunto de la revista:
CIENCIAS DA NUTRICAO
Año:
2019
Tipo del documento:
Article