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Cited by 198

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Erectile dysfunction in cyclic GMP-dependent kinase I-deficient mice

Open access
Hedlund, Petter, Aszódi, Attila, Pfeifer, Alexander, Alm, Per, Hofmann, Franz, Ahmad, Marianne, Fässler, Reinhard, Andersson, Karl-Erik·2000·Proceedings of the National Academy of Sciences

Abstract

The generation of nitric oxide (NO) in penile erectile tissue and the subsequent elevation of cyclic GMP (cGMP) levels are important for normal penile erection. Current treatments of erectile dysfunction elevate either cGMP levels by blocking cGMP degrading phosphodiesterase 5 or cyclic AMP (cAMP) levels by intrapenile injection of prostaglandin E1. The molecular target or targets of cGMP in erectile tissue and the role of cAMP for normal penile erection are not known. Herein, we report that mice lacking cGMP-dependent kinase I (cGKI) have a very low ability to reproduce and that their corpora cavernosa fail to relax on activation of the NO/cGMP signaling cascade. Elevation of cAMP by forskolin, however, induces similar relaxation in normal and cGKI-null corpus cavernosum. In addition, sperm derived from cGKI-null mice is normal, can undergo acrosomal reactions, and can efficiently fertilize eggs. Altogether, these data identify cGKI as the downstream target of cGMP in erectile tissue and provide evidence that cAMP signaling cannot compensate for the absence of the cGMP/cGKI signaling cascade in vivo .

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Metadata

Authors
Hedlund, P., Aszódi, A., Pfeifer, A., Alm, P., Hofmann, F., Ahmad, M., Fässler, R., & Andersson, K.-E.
Venue
Proceedings of the National Academy of Sciences
Published
2000-02-25
Volume
97
Issue
5
Pages
2349-2354
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2152187474
Cited by
198
References
1
FWCI
11.81
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Erectile dysfunction in cyclic GMP-dependent kinase I-deficient mice. https://app.cochat.ai/papers/10.1073/pnas.030419997
The paper
Hedlund, P., Aszódi, A., Pfeifer, A., Alm, P., Hofmann, F., Ahmad, M., Fässler, R., & Andersson, K.-E. (2000). Erectile dysfunction in cyclic GMP-dependent kinase I-deficient mice. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.030419997

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