Potentiating and inhibitory effects of periodate-oxidized ATP analogs on contractions of vas deferens to ATP.
Potentiating and inhibitory effects of periodate-oxidized ATP analogs on contractions of vas deferens to ATP.
复制标题
高碘酸盐氧化 ATP 类似物对输精管 ATP 收缩的增强和抑制作用。
DOI:
10.1016/0014-2999(95)00352-l
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发表时间:
1995
影响因子:
5
通讯作者:
Grant,LJ
中科院分区:
文献类型:
--
作者:
Fedan,JS;Grant,LJ
Previous studies have shown that treatment of guinea-pig isolated vas deferens with the affinity label periodate-oxidized ATP (2′,3′-dialdehyde ATP), results in two irreversible effects on biphasic contractile responses to ATP, i.e., potentiation of the P2Xpurinoceptor-mediated first phase and inhibition of the ecto-kinase-mediated second phase. The present experiments were designed to evaluate whether periodate-oxidized ADP, periodate-oxidized AMP, and periodate-oxidized adenosine, produce similar effects. Periodate-oxidized ATP and periodate-oxidized ADP (10−2M) elicited contraction of the vas deferens (periodate-oxidized ATP > periodate-oxidized ADP; periodate-oxidized AMP and periodate-oxidized adenosine had no agonist activity. After incubation of the preparations for 5 min with 10−2M periodate-oxidized ATP, periodate-oxidized ADP, periodate-oxidized AMP or periodate-oxidized adenosine, the first phase of contraction to submaximal ATP concentrations was potentiated. Simultaneously, periodate-oxidized ATP, periodate-oxidized ADP and periodate-oxidized AMP inhibited the second contractile phase, whereas periodate-oxidized adenosine did not. The results indicate that the requirement for 5′-phosphate to produce potentiation and inhibition is different: 5′-phosphate is not needed to potentiate the first phase of contraction to ATP, but at least one 5′-phosphate is required to inhibit the second phase of contraction.
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影响因子:
7.3
作者:
J. Fedan
通讯作者:
J. Fedan
影响因子:
5
作者:
Fedan,JS;Hogaboom,GK;Westfall,DP;O'Donnell,JP
通讯作者:
O'Donnell,JP
DOI:
10.1042/bj2850585
发表时间:
1992
期刊:
The Biochemical journal
影响因子:
--
作者:
S. Pirotton;O. Boutherin;B. Robaye;J. Boeynaems
通讯作者:
J. Boeynaems
影响因子:
3.1
作者:
J. Matkó;P. Nagy;G. Panyi;G. Vereb;L. Bene;L. Mátyus;S. Damjanovich
通讯作者:
S. Damjanovich
DOI:
--
发表时间:
1990
期刊:
The Journal of pharmacology and experimental therapeutics
影响因子:
--
作者:
Fedan,JS;Lamport,SJ
通讯作者:
Lamport,SJ