Abstract
The objective of this study was to evaluate the status of the markers related to inflammation in db/db mice fed black raspberry seed (BRS) oil, which is rich in α-linolenic acid. Mice were divided into four groups: (1) C57BL/6 mice fed 16 % calories from soybean oil (normal CON); (2) C57BL/KsJ-db/db mice fed 16 % calories from soybean oil (CON); (3) C57BL/KsJ-db/db mice fed 8 % calories from soybean and 8 % calories from BRS oil (BRS 50 %); and (4) C57BL/KsJ-db/db mice fed 16 % calories from BRS oil (BRS 100 %). After 10 weeks, n-6/n-3 fatty acid ratios were significantly (P < 0.05) lower in the livers and epididymal adipose tissues of the BRS 50 % and BRS 100 % mice than in the CON. Serum TNFα and IL-6 were significantly (P < 0.05) lower in the BRS 50 % and BRS 100 % than in the CON. Serum IL-10 was significantly (P < 0.05) higher in the BRS 100 % than the CON. In the liver and epididymal adipose tissue, mRNA levels of pro-inflammatory markers in the BRS 50 % and BRS 100 % were lower than in the CON. Anti-inflammatory markers were higher in the epididymal adipose tissues of the BRS 50 % and BRS 100 % than in the CON. In the epididymal adipose tissue, macrophage infiltration markers (F4/80 and CD68) and leptin mRNA were significantly (P < 0.05) lower in the BRS 50 % and BRS 100 % than in the CON. Results of this study suggest that BRS oil may have anti-inflammatory effects in obese diabetic mice by ameliorating inflammatory responses.
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Abbreviations
- ALA:
-
Alpha linolenic acid
- ARA:
-
Arachidonic acid
- CCR2:
-
C–C motif chemokine receptor 2
- CD:
-
Cluster of differentiation
- Chi3l3:
-
Chitinase 3-like 3
- COX2:
-
Cyclooxygenase 2
- DHA:
-
Docosahexaenoic acid
- EPA:
-
Eicosapentaenoic acid
- GAPDH:
-
Glyceraldehyde-3-phosphate dehydrogenase
- IL:
-
Interleukin
- iNOS:
-
Inducible nitric oxide synthase
- MCP1:
-
Monocyte chemoattractant protein-1
- Mgl1:
-
Macrophage galactose N-acetyl-galactosamine-specific lectin-1
- MUFA:
-
Monounsaturated fatty acid
- NF-κB:
-
Nuclear factor kappa B
- PUFA:
-
Polyunsaturated fatty acids
- TLR4:
-
Toll-like receptor 4
- TNFα:
-
Tumor necrosis factor alpha
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Acknowledgments
This work was supported by the Mid-career Researcher Program through a National Research Foundation (Grant No. 20110010846) by Korean Ministry of Education, Science and Technology.
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Lee, H.J., Jung, H., Cho, H. et al. Dietary Black Raspberry Seed Oil Ameliorates Inflammatory Activities in db/db Mice. Lipids 51, 715–727 (2016). https://doi.org/10.1007/s11745-016-4159-4
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DOI: https://doi.org/10.1007/s11745-016-4159-4