Oxytocin parallel dimer is the disulfide-bridged homo peptide dimer. Oxytocin dimer has oxytocin and vasopressin-like activity with less toxic than oxytocin[1][2].
催产素和脱氨基催产素的平行和反平行、同质/异质双胱氨酸二聚体的生物活性为催产素的 0.2%-6%[1]。
Oxytocin dimer (静脉注射；单剂量) 对大鼠的急性毒性小于催产素 (LD50=43 mg/kg vs 25 mg/kg)[2]。
[1]. Chen L, et al. Syntheses and biological activities of parallel and antiparallel homo and hetero bis-cystine dimers of oxytocin and deamino-oxytocin. Pept Res. 1996;9(3):114-121.
[2]. Berde B, et al. Some pharmacological properties of oxytocin-dimers (α+ β)[J]. Experientia, 1971, 27: 1304-1305.