Decreased cultured endothelial cell proliferation in high glucose medium is reversed by antioxidants: New insights on the pathophysiological mechanisms of diabetic vascular complications

Francesco Curcio, Antonio Ceriello

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

Exposure to hyperglycemia slows the rate of proliferation of cultured human endothelial cells. Recently, it has been reported that glucose may autoxidize generating free radicals which have been hypothesized to delay cell replication time. To test whether oxidative stress has an effect on delaying cell replication time in hyperglycemic conditions, human endothelial cells cultured from umbilical veins were incubated in 5 or 20 m M glucose, either alone or in the presence of one of three different antioxidants: superoxide dismutase (SOD), catalase and glutathione (GSH). Cells grown in medium with 5 m M glucose, with or without antioxidants, yielded similar population doubling times and cell cycle phase distributions. Significantly lower growth parameters were observed in cells grown in medium with 20 m M glucose, without antioxidants. The presence of the antioxidant reverted them to almost normal growth. These data show that high glucose levels may delay endothelial cells replication time through the generation of free radicals, suggesting a possible pathophysiological linkage between the high levels of glucose and the development of microvascular complications of diabetes, possibly suggesting a new therapeutic approach to prevent such complications.

Original languageEnglish
Pages (from-to)787-790
Number of pages4
JournalIn Vitro Cellular and Developmental Biology - Animal
Volume28
Issue number11-12
DOIs
Publication statusPublished - Nov 1992

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Diabetic Angiopathies
Endothelial cells
Cell proliferation
Cultured Cells
Endothelial Cells
Antioxidants
Cell Proliferation
Glucose
Cells
Free Radicals
Oxidative stress
Human Umbilical Vein Endothelial Cells
Diabetes Complications
Medical problems
Growth
Hyperglycemia
Catalase
Superoxide Dismutase
Glutathione
Cell Cycle

Keywords

  • antioxidants
  • endothelial cells
  • growth rate
  • high glucose levels
  • oxidative stress

ASJC Scopus subject areas

  • Developmental Biology
  • Cell Biology
  • Clinical Biochemistry

Cite this

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abstract = "Exposure to hyperglycemia slows the rate of proliferation of cultured human endothelial cells. Recently, it has been reported that glucose may autoxidize generating free radicals which have been hypothesized to delay cell replication time. To test whether oxidative stress has an effect on delaying cell replication time in hyperglycemic conditions, human endothelial cells cultured from umbilical veins were incubated in 5 or 20 m M glucose, either alone or in the presence of one of three different antioxidants: superoxide dismutase (SOD), catalase and glutathione (GSH). Cells grown in medium with 5 m M glucose, with or without antioxidants, yielded similar population doubling times and cell cycle phase distributions. Significantly lower growth parameters were observed in cells grown in medium with 20 m M glucose, without antioxidants. The presence of the antioxidant reverted them to almost normal growth. These data show that high glucose levels may delay endothelial cells replication time through the generation of free radicals, suggesting a possible pathophysiological linkage between the high levels of glucose and the development of microvascular complications of diabetes, possibly suggesting a new therapeutic approach to prevent such complications.",
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N2 - Exposure to hyperglycemia slows the rate of proliferation of cultured human endothelial cells. Recently, it has been reported that glucose may autoxidize generating free radicals which have been hypothesized to delay cell replication time. To test whether oxidative stress has an effect on delaying cell replication time in hyperglycemic conditions, human endothelial cells cultured from umbilical veins were incubated in 5 or 20 m M glucose, either alone or in the presence of one of three different antioxidants: superoxide dismutase (SOD), catalase and glutathione (GSH). Cells grown in medium with 5 m M glucose, with or without antioxidants, yielded similar population doubling times and cell cycle phase distributions. Significantly lower growth parameters were observed in cells grown in medium with 20 m M glucose, without antioxidants. The presence of the antioxidant reverted them to almost normal growth. These data show that high glucose levels may delay endothelial cells replication time through the generation of free radicals, suggesting a possible pathophysiological linkage between the high levels of glucose and the development of microvascular complications of diabetes, possibly suggesting a new therapeutic approach to prevent such complications.

AB - Exposure to hyperglycemia slows the rate of proliferation of cultured human endothelial cells. Recently, it has been reported that glucose may autoxidize generating free radicals which have been hypothesized to delay cell replication time. To test whether oxidative stress has an effect on delaying cell replication time in hyperglycemic conditions, human endothelial cells cultured from umbilical veins were incubated in 5 or 20 m M glucose, either alone or in the presence of one of three different antioxidants: superoxide dismutase (SOD), catalase and glutathione (GSH). Cells grown in medium with 5 m M glucose, with or without antioxidants, yielded similar population doubling times and cell cycle phase distributions. Significantly lower growth parameters were observed in cells grown in medium with 20 m M glucose, without antioxidants. The presence of the antioxidant reverted them to almost normal growth. These data show that high glucose levels may delay endothelial cells replication time through the generation of free radicals, suggesting a possible pathophysiological linkage between the high levels of glucose and the development of microvascular complications of diabetes, possibly suggesting a new therapeutic approach to prevent such complications.

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