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Journal Article
[Effect of peroxisome proliferator-activated receptor-alpha agonist on adipokines expression in rats fed with high-fat diet].
OBJECTIVE: To explore the effect of peroxisome proliferator-activated receptor-alpha ( PPAR-alpha) agonist fenofibrate on adipokines expression in high-fat diet fed SD rats and its relationship to insulin resistance (IR).
METHODS: Rats were randomized into three groups (n = 10) : HD group, fed with high-fat diet; HDF group, fed with high fat diet and treated with fenofibrate; and control group, fed with normal diet. Animals were sacrificed after 4-week follow-up. Plasma lipids, fasting plasma insulin, free fatty acids (FFA), and insulin sensitivity were detected. Reverse transcription-polymerase chain reaction was used to semi-quantitatively determine the mRNA expression of adipokines including tumor necrosis factor-alpha (TNF-alpha) , interleukin-6 (IL-6), angiotensinogen (AGT), angiotensin 11 type 1 receptor (AT1R), and adiponectin in brown fat.
RESULTS: The plasma level of FFA, TG, and homeostatic model approach-IR index were (2. 37+/-0. 60) vs (1. 59+/-0. 30) vs (1. 33+/-0. 34 ) mmol/L, (0. 48+/-0. 11) vs (0. 30+/-0. 04) vs (0. 36+/-0. 07) mmol/L, and 12. 30+/-3. 97 vs 5. 03 +/-1. 88 vs 4. 17+/-1. 27 in the HD group, HDF group, and control group after 4 weeks of treatment with fenofibrate, respectively. The mRNA expressions of TNF-alpha and adiponectin were 1. 726+/-1. 408 vs 0. 713+/-0. 711 vs 0. 593+/-0. 382 and 0. 660+/-0. 192 vs 0. 949+/-0. 35 vs 0. 936+/-0. 130 in these three groups, which showed significant difference between HD group and HDF group (P < 0. 05 ) , while no significant difference between HDF group and control group (P > 0. 05). The mRNA expressions of AGT, AT1 R, and IL-6 had no significant difference among these three groups (P > 0. 05 ).
CONCLUSION: PPAR-alpha agonist fenofibrate may reverse high-fat diet induced lipid abnormalities, improve insulin sensitivity, and regulate the mRNA expressions of TNF-alpha and adiponectin in adipose tissues.
METHODS: Rats were randomized into three groups (n = 10) : HD group, fed with high-fat diet; HDF group, fed with high fat diet and treated with fenofibrate; and control group, fed with normal diet. Animals were sacrificed after 4-week follow-up. Plasma lipids, fasting plasma insulin, free fatty acids (FFA), and insulin sensitivity were detected. Reverse transcription-polymerase chain reaction was used to semi-quantitatively determine the mRNA expression of adipokines including tumor necrosis factor-alpha (TNF-alpha) , interleukin-6 (IL-6), angiotensinogen (AGT), angiotensin 11 type 1 receptor (AT1R), and adiponectin in brown fat.
RESULTS: The plasma level of FFA, TG, and homeostatic model approach-IR index were (2. 37+/-0. 60) vs (1. 59+/-0. 30) vs (1. 33+/-0. 34 ) mmol/L, (0. 48+/-0. 11) vs (0. 30+/-0. 04) vs (0. 36+/-0. 07) mmol/L, and 12. 30+/-3. 97 vs 5. 03 +/-1. 88 vs 4. 17+/-1. 27 in the HD group, HDF group, and control group after 4 weeks of treatment with fenofibrate, respectively. The mRNA expressions of TNF-alpha and adiponectin were 1. 726+/-1. 408 vs 0. 713+/-0. 711 vs 0. 593+/-0. 382 and 0. 660+/-0. 192 vs 0. 949+/-0. 35 vs 0. 936+/-0. 130 in these three groups, which showed significant difference between HD group and HDF group (P < 0. 05 ) , while no significant difference between HDF group and control group (P > 0. 05). The mRNA expressions of AGT, AT1 R, and IL-6 had no significant difference among these three groups (P > 0. 05 ).
CONCLUSION: PPAR-alpha agonist fenofibrate may reverse high-fat diet induced lipid abnormalities, improve insulin sensitivity, and regulate the mRNA expressions of TNF-alpha and adiponectin in adipose tissues.
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