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The effect of type 2 diabetes on CD36 expression and the uptake of oxLDL: Diabetes affects CD36 and oxLDL uptake.
Kanoke, Atsushi; Nishijima, Yasuo; Ljungberg, Magnus; Omodaka, Shunsuke; Yang, Shih Yen; Wong, Suwai; Rabiller, Gratianne; Tominaga, Teiji; Hsieh, Christine L; Liu, Jialing.
Afiliación
  • Kanoke A; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA; Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
  • Nishijima Y; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA; Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
  • Ljungberg M; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA; Linköping University, Linköping SE-581 83, Sweden.
  • Omodaka S; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA; Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
  • Yang SY; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA.
  • Wong S; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA.
  • Rabiller G; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA.
  • Tominaga T; Department of Neurosurgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai 980-8574, Japan.
  • Hsieh CL; SFVAMC, San Francisco, CA 94121, USA; Department of Medicine, UCSF, San Francisco, CA 94121, USA.
  • Liu J; Department of Neurological Surgery, UCSF, San Francisco, CA 94158, USA; SFVAMC, San Francisco, CA 94121, USA. Electronic address: jialing.liu@ucsf.edu.
Exp Neurol ; 334: 113461, 2020 12.
Article en En | MEDLINE | ID: mdl-32926860
We investigated whether type 2 diabetes mellitus (T2DM), a risk factor of stroke, affects the level of scavenger receptor CD36 and the uptake of its ligand, oxidized LDL (oxLDL); and whether pioglitazone, a drug that enhances CD36, promotes oxLDL uptake. Compared to normoglycemic db/+ mice, adult db/db mice showed a pronounced reduction in surface CD36 expression on myeloid cells from the blood, brain, and bone marrow as detected by flow cytometry, which correlated with elevated plasma soluble-CD36 as determined by ELISA. Increased CD36 expression was found in brain macrophages and microglia of both genotypes 7 days after ischemic stroke. In juvenile db/db mice, prior to obesity and hyperglycemia, only a mild reduction of surface CD36 was found in blood neutrophils, while all other myeloid cells showed no difference relative to the db/+ strain. In vivo, oral pioglitazone treatment for four weeks increased CD36 levels on myeloid cells in db/db mice. In vitro, uptake of oxLDL by bone marrow derived macrophages (BMDMs) of db/db mice was reduced relative to db/+ mice in normal glucose medium. OxLDL uptake inversely correlated with glucose levels in the medium in db/+ BMDMs. Furthermore, pioglitazone restored oxLDL uptake by BMDMs from db/db mice cultured in high glucose. Our data suggest that T2DM is associated with reduced CD36 on adult myeloid cells, and pioglitazone enhances CD36 expression in db/db cells. T2DM or high glucose reduces oxLDL uptake while pioglitazone enhances oxLDL uptake. Our findings provide new insight into the mechanism by which pioglitazone may be beneficial in the treatment of insulin resistance.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Antígenos CD36 / Diabetes Mellitus Tipo 2 / Lipoproteínas LDL Tipo de estudio: Risk_factors_studies Límite: Animals Idioma: En Revista: Exp Neurol Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Antígenos CD36 / Diabetes Mellitus Tipo 2 / Lipoproteínas LDL Tipo de estudio: Risk_factors_studies Límite: Animals Idioma: En Revista: Exp Neurol Año: 2020 Tipo del documento: Article País de afiliación: Japón Pais de publicación: Estados Unidos