Contents of Vanadium and Sulphur in the Blood Cells of Ascidia Mentula and Ascidiella Aspersa
Contents of Vanadium and Sulphur in the Blood Cells of Ascidia Mentula and Ascidiella Aspersa
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海鞘和海鞘血细胞中钒和硫的含量
DOI：
10.1017/s002531540001986x
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发表时间：
1982
影响因子：
1.2
通讯作者：
J. Sargent
中科院分区：
文献类型：
--
作者：
M. V. Bell;B. Pirie;D. Mcphail;B. Goodman;I. Falk;J. Sargent
Henze（1911）是第一个在某些种类的被囊动物的血液中发现大量钒和硫酸的人。Webb（1939）确定硫酸和钒都存在于血液中称为钒细胞的同一种细胞类型中。从那时起，对这些极不寻常的细胞进行了进一步的研究（Goodbody于1974年进行了回顾）。某些种类的被囊鱼会积聚其他金属，包括铁、钛、铌和钽（Carlisle, 1968），但这些金属以及钒本身的作用尚不清楚。钒细胞中的钒主要以还原阳离子形式存在（III） （Carlson, 1975; Tullius et al. 1980），钒与一种尚未确定结构的染色质和硫酸盐作为反阴离子络合（Bielig et al. 1966）。黑Ascidia nigra的血液不能进行可逆的氧结合（Macara, McLeod & Kustin, 1979），有推测认为还原后的钒参与了鞘膜材料的合成（see Goodbody, 1974）。海鞘的外衣也含有富含钒和硫酸的细胞，它们在抗污染和抗捕食方面的作用已被考虑（Stoecker, 1980a, b）。
Henze (1911) was the first to discover large amounts of vanadium and sulphuric acid in the blood of certain species of tunicates. Webb (1939) established that both the sulphuric acid and the vanadium were present in blood in the same cell type, termed a vanadocyte. Since then much further work (reviewed by Goodbody, 1974) has been done on these highly unusual cells. Some species of tunicates accumulate other metals, including iron, titanium, niobium and tantalum (Carlisle, 1968) but the role(s) of these metals and indeed of vanadium itself remains unclear. The vanadium is present in vanadocytes in a reduced cationic form largely as vanadium(III) (Carlson, 1975; Tullius et al. 1980) which is complexed with a chromagen of as yet undefined structure and with sulphate as the counter anion (Bielig et al. 1966). The blood of Ascidia nigra is not capable of reversible oxygen binding (Macara, McLeod & Kustin, 1979), and there has been speculation that the reduced vanadium is involved in the synthesis of the tunic material (see Goodbody, 1974). The tunic of ascidians also contains cells rich in vanadium and sulphuric acid and roles for them in anti-fouling and anti-predation have been considered (Stoecker, 1980a, b).