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Cited by 34

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Effects of Chronic Stress on Penile Corpus Cavernosum of Rats

De Souza, Diogo B., Silva, Dilson, Cortez, Celia M., Costa, Waldemar S., Sampaio, Francisco J. B.·2012·Journal of Andrology
DOI 10.2164/jandrol.111.014225
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Abstract

Abstract: The objective of this study was to investigate structural changes in the penile corpus cavernosum of prepubertal chronically stressed rats. Eight Wistar rats were assigned into the stress group (SG) and were submitted to 2 hours of tube restraint daily, from the fourth to the ninth week of life. Another 7 rats were used as the control group (CG). All animals were weighed weekly. At day 64, animals were sacrificed by anesthetic overdose, blood was collected for testosterone concentration by radioimmunoassay, and penis and adrenal were collected. Adrenal mass index and testosterone serum levels were used to assess the efficacy of the stress stimulus. The surface density of connective tissue and smooth muscle fibers of corpus cavernosum were measured on Masson trichromic—stained slices. Picrosirius red—stained slices were assessed under polarized light for different types of collagen. The Student's t test was applied for mean comparisons, with P < .05 considered significant. Testosterone serum concentrations decreased and adrenal mass index increased, confirming the effectiveness of the stress protocol. Smooth muscle fibers of corpus cavernosum decreased from 14.07% (CG) to 8.98% (SG) (P = .02), and connective tissue increased from 53.66% (CG) to 64.47% (SG) (P = .01). Also, there was a higher level of type I collagen in the SG animals compared with the CG. Stress stimuli induced structural changes in the corpus cavernosum of rats suggestive of penile fibrosis, which may play a role in erection dysfunction.

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Metadata

Authors
De Souza, D. B., Silva, D., Cortez, C. M., Costa, W. S., & Sampaio, F. J. B.
Venue
Journal of Andrology
Publisher
Wiley
Published
2012-07-08
Volume
33
Issue
4
Pages
735-739
ISSN
  • 0196-3635
  • 1939-4640
DOI
10.2164/jandrol.111.014225
Cited by
34
References
1
Language
en
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor, 178 d)

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CoChat. (2026). Citation check: Effects of Chronic Stress on Penile Corpus Cavernosum of Rats. https://app.cochat.ai/papers/10.2164/jandrol.111.014225
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De Souza, D. B., Silva, D., Cortez, C. M., Costa, W. S., & Sampaio, F. J. B. (2012). Effects of Chronic Stress on Penile Corpus Cavernosum of Rats. Journal of Andrology. https://doi.org/10.2164/jandrol.111.014225

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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.