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. 2015 Sep 9;12(9):11196-208.
doi: 10.3390/ijerph120911196.

Effect of Sodium Selenite on Pathological Changes and Renal Functions in Broilers Fed a Diet Containing Aflatoxin B₁

Na Liang  1 , Fengyuan Wang  2 , Xi Peng  3 , Jing Fang  4 , Hengmin Cui  5 , Zhengli Chen  6 , Weimin Lai  7 , Yi Zhou  8 , Yi Geng  9
Affiliations

Effect of Sodium Selenite on Pathological Changes and Renal Functions in Broilers Fed a Diet Containing Aflatoxin B₁

Na Liang et al. Int J Environ Res Public Health. .

Abstract

To evaluate the renal toxicity of dietary aflatoxin B₁ (AFB₁) and ameliorating effects of added dietary sodium selenite in broiler, renal histopathological changes, ultrastructural changes, and renal function parameters were monitored at 7, 14, and 21 days of age. Two hundred one-day-old healthy male Avian broilers were divided into four groups, namely control group, AFB₁ group (0.3 mg/kg AFB₁), +Se group (0.4 mg/kg Se), and AFB₁+Se group (0.3 mg/kg AFB₁+0.4 mg/kg Se). Compared with that of the control group, the relative weight of kidney was increased in the AFB₁ group. There were no significant differences between the AFB₁+Se group and the control group. By histopathological observation, the renal epithelia were swelling and necrosis at 7 and 21 days of age. Ultrastructurally, the lipid droplets and expanded endoplasmic reticulum appeared in the plasma of epithelia cells in the AFB₁ group. Enlarged mitochondria with degenerated cristae were observed in the +Se group. Compared with the control group, the contents of serum creatinine and serum uric acid in the AFB₁ group were increased, while the activity of renal Na⁺-K⁺ ATPase was decreased. When 0.4 mg/kg selenium was added into the diet containing 0.3 mg/kg AFB₁, there were no obvious histological changes in the AFB₁+Se group, and the contents of the serum creatinine and serum uric acid contents and the activity of renal Na⁺-K⁺ ATPase were close to those in the control group. In conclusion, sodium selenite exhibited protective effects on AFB₁-induced kidney toxicity in broilers.

Keywords: aflatoxin B1; broiler; pathological observation; renal function; sodium selenite; ultrastructural observation.

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Figures

Figure 1
Figure 1
(a) Kidney of the 7-day-old in control group; (b) kidney of the 7-day-old in AFB1 group: the renal cells were swelling and the renal tubules cavity seriously closure; (c) kidney of the 7-day-old in +Se group; (d) kidney of 7-day-old in AFB1+Se group. Bars = 100 μm.
Figure 2
Figure 2
(a) Kidney of the 21-day-old in control group; (b) kidney of the 21-day-old in AFB1 group: a great number of necrotic cells was observed in renal tubular epithelial cells (→); (c) kidney of the 21-day-old in +Se group; (d) kidney of 21-day-old in AFB1+Se group. Bars = 100 μm.
Figure 3
Figure 3
(a) Kidney of the 21-day-old in control group: proximal convoluted tubular epithelial cell with a great numbers of mitochondria and rough endoplasmic reticulum; (b) kidney of the 21-day-old in AFB1 group: lipid droplets appeared (*); (c) kidney of 21-day-old in AFB1 group: lipid droplets appeared (*); (d) kidney of the 21-day-old in +Se group: The mitochondria were swollen and enlarged (→); (e) kidney of the 21-day-old in +Se group: The cristae of mitochondria were irregularly ranked and degenerated (→); (f) kidney of the 21-day-old in AFB1+Se group: renal epithelial cell with a great number of normal mitochondria.
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