Lundgren O, Haglund U
Acta Physiol Scand. 1978 May;103(1):59-70. doi: 10.1111/j.1748-1716.1978.tb06191.x.
The cardiotoxic material released into blood from the feline small intestine during a 2 or 3 h regional shock period (inflow pressure to the small intestine 30--35 mmHg during a continuous activation of the regional sympathetic vasoconstrictor fibres at 6 Hz) has been analyzed with regard to three properties: 1. molecular mass determined by molecular filtrations; 2. solubility in a nonpolar solvent (ether); 3. heat stability by heating plasma to 80 degrees C for 30 min. The results obtained suggest that the cardiotoxic material consists of at least two heat stable fractions. One is water soluble with a molecular mass between 500 and 1 000 d and the other is lipid soluble with an unknown molecular mass.
在2至3小时的局部休克期（在6赫兹持续激活局部交感缩血管纤维期间，小肠的流入压力为30 - 35毫米汞柱），从猫小肠释放到血液中的心脏毒性物质已针对三个特性进行了分析：1. 通过分子过滤测定的分子量；2. 在非极性溶剂（乙醚）中的溶解度；3. 通过将血浆加热至80摄氏度30分钟来测定热稳定性。所得结果表明，心脏毒性物质至少由两个热稳定组分组成。一种是水溶性的，分子量在500至1000道尔顿之间，另一种是脂溶性的，分子量未知。
