Redefining the role of Ca(2+)-permeable channels in photoreceptor degeneration using diltiazem.
Redefining the role of Ca(2+)-permeable channels in photoreceptor degeneration using diltiazem.
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DOI:
10.1038/s41419-021-04482-1
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发表时间:
2022-01-10
影响因子:
9
通讯作者:
Nache V
中科院分区:
文献类型:
--
作者:
Das S;Popp V;Power M;Groeneveld K;Yan J;Melle C;Rogerson L;Achury M;Schwede F;Strasser T;Euler T;Paquet-Durand F;Nache V
Hereditary degeneration of photoreceptors has been linked to over-activation of Ca2+-permeable channels, excessive Ca2+-influx, and downstream activation of Ca2+-dependent calpain-type proteases. Unfortunately, after more than 20 years of pertinent research, unequivocal evidence proving significant and reproducible photoreceptor protection with Ca2+-channel blockers is still lacking. Here, we show that both D- and L-cis enantiomers of the anti-hypertensive drug diltiazem were very effective at blocking photoreceptor Ca2+-influx, most probably by blocking the pore of Ca2+-permeable channels. Yet, unexpectedly, this block neither reduced the activity of calpain-type proteases, nor did it result in photoreceptor protection. Remarkably, application of the L-cis enantiomer of diltiazem even led to a strong increase in photoreceptor cell death. These findings shed doubt on the previously proposed links between Ca2+ and retinal degeneration and are highly relevant for future therapy development as they may serve to refocus research efforts towards alternative, Ca2+-independent degenerative mechanisms.
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影响因子:
3.5
作者:
Koch, Susanne;Sothilingam, Vithiyanjali;Michalakis, Stylianos
通讯作者:
Michalakis, Stylianos
影响因子:
16.2
作者:
KORSCHEN, HG;ILLING, M;MOLDAY, RS
通讯作者:
MOLDAY, RS
DOI:
10.1073/pnas.90.7.2955
发表时间:
1993-04-01
影响因子:
11.1
作者:
BOWES, C;LI, TS;FARBER, DB
通讯作者:
FARBER, DB
影响因子:
3.4
作者:
Hart, J;Wilkinson, MF;Barnes, S
通讯作者:
Barnes, S
DOI:
10.1007/s00424-021-02556-9
发表时间:
2021-09
期刊:
Pflugers Archiv : European journal of physiology
影响因子:
--
作者:
Das S;Chen Y;Yan J;Christensen G;Belhadj S;Tolone A;Paquet-Durand F
通讯作者:
Paquet-Durand F