Site-specific fatty acid composition in adipose tissues of several northern aquatic and terrestrial mammals
Site-specific fatty acid composition in adipose tissues of several northern aquatic and terrestrial mammals
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DOI：
10.1016/s0305-0491(96)00150-2
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发表时间：
1996-12-01
影响因子：
2.2
通讯作者：
Hyvarinen, H
中科院分区：
文献类型：
--
作者：
Kakela, R;Hyvarinen, H
比较了水生、半水生和陆生哺乳动物的脂肪酸组成的位点特异性差异（通过气液色谱法）：环斑海豹（Phoca hispida hispida 和 P. h. botnica）、水獭（Lutra lutra）、貉（Nyctereutes procyonoides）、棕熊（Ursus arctos）和灰狼（Canis lupus）。此外，我们还简要讨论了我们早期对加拿大海狸 (Castor canadensis) 和麝香鼠 (Ondatra zibethicus) 的研究结果。在水生和陆生物种的四肢冷组织中都发现了大量的 Delta 9-单不饱和脂肪酸 (MUFA) 和少量的饱和脂肪酸和外源性长链 MUFA。在海豹中，变温外层鲸脂具有这些特征并且不同于内层鲸脂。另一方面，有涂层的半水生和陆生哺乳动物的皮下和内部脂肪库是均匀的。然而，在这些哺乳动物的裸露四肢中，也含有过量的 Delta 9-MUFA。海豹外层脂肪中 Delta 9 去饱和度与年龄显着相关。与内库相比，陆地哺乳动物裸露四肢中过量的 Delta 9-MUFA 增加了这些组织的总体双键含量。相比之下，由于膳食中含有大量多不饱和脂肪酸，在水生和半水生物种中没有发现这种情况。观察到的位点特异性差异被讨论为可能的遗传进化适应组织的低温。版权所有 (C) 1996 爱思唯尔科学公司。
Site-specific differences in fatty acid compositions (by gas-liquid chromatography) were compared in aquatic, semiaquatic and terrestrial mammals: the ringed seals (Phoca hispida hispida and P. h. botnica), otter (Lutra lutra), raccoon dog (Nyctereutes procyonoides), brown bear (Ursus arctos) and grey wolf (Canis lupus). In addition, we briefly discuss our earlier results for the Canadian beaver (Castor canadensis) and muskrat (Ondatra zibethicus). In both aquatic and terrestrial species, large amounts of Delta 9-monounsaturated fatty acids (MUFAs) and small amounts of saturated fatty acids and exogenous long chain MUFAs were found in the cold tissues of the extremities. In seals, the poikilothermic outer blubber had these characteristics and differed from the inner blubber. On the other hand, the subcutaneous and inner fat depots of the coated semiaquatic and terrestrial mammals were uniform. In the bare extremities, however, these mammals also had an excess of Delta 9-MUFAs. The degree of Delta 9-desaturation in the outer blubber of the seals was significantly correlated with age. The excess of Delta 9-MUFAs in the bare extremities of land mammals increased the overall double bond content of these tissues compared with the inner depots. In contrast, due to the large amounts of dietary polyunsaturated fatty acids, this was not found in the aquatic and semiaquatic species. The observed site-specific differences are discussed as possible inherited evolutionary adaptations to low temperature of the tissues. Copyright (C) 1996 Elsevier Science Inc.