Potential Role of L-Arginine and Vitamin E Against Bone Loss Induced by Nano-Zinc Oxide in Rats / Hala M. Abdelkarem, Laila H. Fadda, Eman M. El-Sayed, Omyma K. Radwan
ABSTRACT The purpose of this study was to illustrate the effects of zinc oxide nanoparticles (ZnO-NPs) administration on bone turnover and bone resorbing agents in rats and how L-arginine (L-arg) or vitamin E (vit E) co-administrations might affect them. Fasting rats were randomly divided into four groups ( n = 10): G1—normal healthy animals; G2—ZnO-NPs-exposed rats (600 mg/kg − 1/day −1 ); G3—ZnO-NPs-exposed rats co-administrated L-arg (200 mg/kg − 1/day −1 ); G4—ZnO-NPs-exposed rats co-administrated vit E (200 mg/kg − 1/day −1 ). The ingredients were orally administered daily. The body weight and food consumption of rats were recorded during the administration period and the experiment continued for three consecutive weeks. The results demonstrated that ZnO-NPs administration induced bone loss in rats as manifested by reduced activity of bone alkaline phosphatase (B-ALP) and increased level of C-terminal peptide type I collagen (CTx). The increase of inflammatory markers, tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) by ZnO-NPs suggests that deleterious effects of ZnO-NPs on bone turnover were, in part, due to inflammation. Confirming to this suggestion, both L-arg and vit E reduced TNF-α and IL-6 levels and consequently decreased bone resorption as indicated by reduced serum CTx level. This study proved that ZnO-NPs can induce bone turnover, which may be reduced by L-arg or vit.E co-administration, partly by anti-inflammatory mechanism.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2018 |
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| Erschienen: |
2018 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:15 |
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| Enthalten in: |
Journal of dietary supplements - 15(2018), 3, Seite 300-310 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Abdelkarem, Hala M. [VerfasserIn] |
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| Links: |
FID Access [lizenzpflichtig] |
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| Themen: |
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| Umfang: |
1 Online-Ressource (11 p) |
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| doi: |
10.1080/19390211.2017.1343889 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| 520 | |a ABSTRACT The purpose of this study was to illustrate the effects of zinc oxide nanoparticles (ZnO-NPs) administration on bone turnover and bone resorbing agents in rats and how L-arginine (L-arg) or vitamin E (vit E) co-administrations might affect them. Fasting rats were randomly divided into four groups ( n = 10): G1—normal healthy animals; G2—ZnO-NPs-exposed rats (600 mg/kg − 1/day −1 ); G3—ZnO-NPs-exposed rats co-administrated L-arg (200 mg/kg − 1/day −1 ); G4—ZnO-NPs-exposed rats co-administrated vit E (200 mg/kg − 1/day −1 ). The ingredients were orally administered daily. The body weight and food consumption of rats were recorded during the administration period and the experiment continued for three consecutive weeks. The results demonstrated that ZnO-NPs administration induced bone loss in rats as manifested by reduced activity of bone alkaline phosphatase (B-ALP) and increased level of C-terminal peptide type I collagen (CTx). The increase of inflammatory markers, tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) by ZnO-NPs suggests that deleterious effects of ZnO-NPs on bone turnover were, in part, due to inflammation. Confirming to this suggestion, both L-arg and vit E reduced TNF-α and IL-6 levels and consequently decreased bone resorption as indicated by reduced serum CTx level. This study proved that ZnO-NPs can induce bone turnover, which may be reduced by L-arg or vit.E co-administration, partly by anti-inflammatory mechanism | ||
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