急性冷刺激后巴马猪背膘和腹股沟皮下脂肪组织的脂质组比较

doi:10.16431/j.cnki.1671-7236.2020.09.008

Abstract

Abstract: This experiment aimed to study the difference of lipid metabolism between backfat and inguinal subcutaneous white adipose tissue (iWAT) after acute cold exposure (4 ℃ for 4 h).The LC-MS/MS based lipidomics of backfat and iWAT from chow diet-fed and cold-treated six-month-old male Bama pigs were profiled.The results showed that the content of 4 lipids classes,including neutral lipids,free fatty acids,phospholipids and sphingolipids were varies greatly in iWAT of Bama pigs.The highest lipid class in both iWAT and backfat was neutral lipids,which accounted for 97.43% and 98.53% respectively;The lowest lipid class was sphingolipids,which accounted for 0.10%and 0.07% in iWAT and backfat,respectively.Among 16 subclass lipids,the highest content in iWAT and backfat was TAG,which accounted for 95.97% and 97.33%,respectively,while the lowest content was PA,which accounted for 3.98E-04% and 1.13E-04% in iWAT and backfat,respectively.PCA analysis showed that backfat and iWAT could be separated clearly,which indicated the distinct changes in lipid composition of both fat tissues.And 18 different lipid species were determined using a criteria of fold change>1.5 and P<0.05,the results showed that 16 lipid species were significantly downregulated in backfat,including 14 TAGs,DAG32:1 (16:1/16:0) and PE40:6p.Two lipid species,including CL74:8(18:2) and TAG54:3 (16:0),were observed to be upregulated in backfat.The above results indicated that TAG was the main content of iWAT in Bama pigs,the backfat and iWAT had different physiological responses for acute cold stimulation.

Key words: lipidomics; backfat; inguinal subcutaneous adipose tissue; acute cold exposure; Bama pigs

CLC Number:

S858.28

PAN Jianfei, ZHENG Qiantao, TAO Cong, ZHAO Jianguo, WANG Yanfang. Comparison of Lipid Profiles of Backfat and Inguinal Subcutaneous White Adipose Tissue from Acute Cold-treated Bama Pigs[J]. China Animal Husbandry and Veterinary Medicine, 2020, 47(9): 2759-2766.

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Comparison of Lipid Profiles of Backfat and Inguinal Subcutaneous White Adipose Tissue from Acute Cold-treated Bama Pigs

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