The rabbit as an intracavernous injection study model

被引:13
作者
Lin, YM
Lin, JSN
机构
[1] Department of Urology, National Cheng Kung University, Medical College and Hospital, Tainan
来源
UROLOGICAL RESEARCH | 1996年 / 24卷 / 01期
关键词
rabbit; erection; prostaglandin; papaverine;
D O I
10.1007/BF00296730
中图分类号
R5 [内科学]; R69 [泌尿科学(泌尿生殖系疾病)];
学科分类号
1002 ; 100201 ;
摘要
We investigated the feasibility of using the rabbit as an animal model for intracavernous injection studies. The rabbit, having a penile structure rather similar to that of humans, offers the advantage of being a strain-specific, adequately sized, and easily controlled experimental animal. Using intracavernous injections of the two vasoactive drugs prostaglandin E(1) (PGE(1), 0.2-1.6 mu g/kg) and papaverine (PAP, 0.25-1 mg/kg), which have been commonly used in the management of erectile dysfunction in man, increases intracavernous pressure (Delta ICP) were induced. After intracavernous injection of PCE(1), the maximal Delta ICP ranged from 18 to 44 mmHg (mean 29.25 +/- 7.85 mmHg) with a duration of tumescence from 3.1 to 13.3 min (mean 8.61 +/- 3.71 min). Intracavernous injection of PAP also induced increases in ICP, with a maximal Delta ICP ranging from 24 to 56 mmHg (mean 43.5 +/- 11.35 mmHg) and a duration of tumescence from 5.3 to 15 min (mean 10.25 +/- 3.39 min). The systemic blood pressures were unchanged after all intracavernous injections. In addition, administration of cAMP antagonist in combination with PGE(1) inhibited the relaxing effects of PGE(1) in a dose-dependent manner. Our results suggest that the effects of vasoactive drugs on the rabbit's corpus cavernosum are similar to those in humans; thus the rabbit model is a suitable alternative for further physiological and pharmacological studies of penile erection.
引用
收藏
页码:27 / 32
页数:6
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