Tissue antioxidant status in streptozotocin-induced diabetes in rats. Effects of dietary manganese deficiency
Interactions between manganese (Mn) deficiency and streptozotocin (STZ)-diabetes with respect to tissue antioxidant status were investigated in male, Sprague-Dawley rats. All rats were fed either a Mn-deficient (1 ppm) or a Mn-sufficient (45 ppm) diet for 8 wk. Diabetes was then induced by tail-vein injection of STZ (60 mg/kg body weight), after which the rats were kept for an additional 4 or 8 wk. The control groups comprised rats not injected with STZ and fed either Mn-deficient or Mn-sufficient diets for a total of 12 wk. The Mn-deficient diet decreased the activities of manganese superoxide dismutase (MnSOD) in kidney and heart, and of copper-zinc superoxide dismutase (CuZnSOD) in kidney, in the non-diabetic animals. In the diabetic rats, the Mn-deficient diet induced more pronounced decreases in activities of these same enzymes, and also increased liver MnSOD activity. Plasma and hepatic vitamin E levels increased progressively with the duration of diabetes, independent of dietary Mn intake. Lipid peroxidation, as measured by H2O2-induced production of thiobarbituric acid reactive substances in erythrocytes, also increased, concomitant with decreased liver and kidney glutathione (GSH) levels. These findings demonstrate for the first time and interactive effective between Mn deficiency and STZ-diabetes, resulting in amplification of tissue antioxidant changes seen with either Mn deficiency or STZ-diabetes alone. This effect of Mn deprivation in experimental diabetes suggests a physiological role for Mn as an antioxidant nutrient.
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
1992 |
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| Erschienen: |
1992 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:35 |
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| Enthalten in: |
Biological trace element research - 35(1992), 3 vom: 22. Dez., Seite 213-24 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Thompson, K H [VerfasserIn] |
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| Themen: |
1406-18-4 |
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| Anmerkungen: |
Date Completed 12.03.1993 Date Revised 13.11.2018 published: Print Citation Status MEDLINE |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM012641774 |
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| 100 | 1 | |a Thompson, K H |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Tissue antioxidant status in streptozotocin-induced diabetes in rats. Effects of dietary manganese deficiency |
| 264 | 1 | |c 1992 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
| 338 | |a Band |b nc |2 rdacarrier | ||
| 500 | |a Date Completed 12.03.1993 | ||
| 500 | |a Date Revised 13.11.2018 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Interactions between manganese (Mn) deficiency and streptozotocin (STZ)-diabetes with respect to tissue antioxidant status were investigated in male, Sprague-Dawley rats. All rats were fed either a Mn-deficient (1 ppm) or a Mn-sufficient (45 ppm) diet for 8 wk. Diabetes was then induced by tail-vein injection of STZ (60 mg/kg body weight), after which the rats were kept for an additional 4 or 8 wk. The control groups comprised rats not injected with STZ and fed either Mn-deficient or Mn-sufficient diets for a total of 12 wk. The Mn-deficient diet decreased the activities of manganese superoxide dismutase (MnSOD) in kidney and heart, and of copper-zinc superoxide dismutase (CuZnSOD) in kidney, in the non-diabetic animals. In the diabetic rats, the Mn-deficient diet induced more pronounced decreases in activities of these same enzymes, and also increased liver MnSOD activity. Plasma and hepatic vitamin E levels increased progressively with the duration of diabetes, independent of dietary Mn intake. Lipid peroxidation, as measured by H2O2-induced production of thiobarbituric acid reactive substances in erythrocytes, also increased, concomitant with decreased liver and kidney glutathione (GSH) levels. These findings demonstrate for the first time and interactive effective between Mn deficiency and STZ-diabetes, resulting in amplification of tissue antioxidant changes seen with either Mn deficiency or STZ-diabetes alone. This effect of Mn deprivation in experimental diabetes suggests a physiological role for Mn as an antioxidant nutrient | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
| 650 | 7 | |a Antioxidants |2 NLM | |
| 650 | 7 | |a Vitamin E |2 NLM | |
| 650 | 7 | |a 1406-18-4 |2 NLM | |
| 650 | 7 | |a Manganese |2 NLM | |
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| 650 | 7 | |a Superoxide Dismutase |2 NLM | |
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| 650 | 7 | |a Glutathione |2 NLM | |
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| 700 | 1 | |a Godin, D V |e verfasserin |4 aut | |
| 700 | 1 | |a Lee, M |e verfasserin |4 aut | |
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