Comparative analysis of biomechanical properties of grafts and intact tunica albuginea in experiment
- Authors: Kotov S.V.1,2,3, Sokolov N.M.1,2, Yapina A.A.1, Yusufov A.G.1,2, Titkova S.M.1, Klimenko E.I.3, Raksha A.P.1,3, Anurov M.V.1
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Affiliations:
- Pirogov Russian National Research Medical University
- Moscow Multidisciplinary Clinical Center «Kommunarka» of the Moscow Department of Health
- Pirogov City Clinical Hospital No. 1
- Issue: No 4 (2025)
- Pages: 5-13
- Section: ORIGINAL ARTICLES
- URL: https://journals.rcsi.science/1728-2985/article/view/316540
- DOI: https://doi.org/10.18565/urology.2025.4.5-13
- ID: 316540
Cite item
Abstract
Introduction. Existing treatment methods for Peyronie's disease (PD) aim to restore the normal biomechanical functions of the tunica albuginea (TA); however, current data on biomechanical changes in PD, as well as on the biomechanical properties of native human TA, are extremely limited. The aim of our study was to evaluate the biomechanical properties of intact TA and the materials most commonly used for its replacement.
Materials and Methods. Samples of the TA were collected from 9 male cadavers aged 20 to 65 years. Rectangular sections of the TA were excised from the dorsal surface of the corpora cavernosa. Fixation of the specimens in formalin was not performed, as this could affect the biomechanical properties of the tissue. Prepared samples were divided into longitudinal and transverse fragments. Pericardial grafts (allograft from cadaveric pericardium; xenograft from bovine pericardium) were prepared similarly. The obtained tissue fragments were subjected to mechanical testing. All tensile tests were conducted using a single-column universal material testing machine, the TA.XTplus Texture Analyzer (Stable Micro Systems Ltd., UK). Interactive stress-strain curves were used for result analysis. The following parameters were determined: stress, strength, strain, sample thickness. The obtained data were subjected to statistical analysis.
Results. Analysis of the obtained data revealed that the stress and strength of longitudinal fragments of TA were statistically significantly higher (p = 0,0004 and p = 0,0008; Tukey’s test) than those for the transverse fragments. This indicates that human TA is anisotropic. Correlation analysis showed a negative correlation between the patient age and the strength (r = –0,49; p < 0,05; Spearman’s rank correlation). Additionally, a negative correlation was found between the patient’s age and the thickness of their tunica albuginea (r = –0,56; p < 0,05 according to Spearman’s test). When comparing human TA with grafts from bovine and human pericardium, it was found that the strength and thickness calculated for human tunica albuginea were statistically significantly higher (p = 0,0001; Tukey’s test) than those for the grafts.
Conclusions. Human and bovine pericardium grafts significantly differ from healthy TA in terms of stress, elastic modulus, strength, and thickness, which may impact the outcomes of surgical treatment for patients with PD.
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##article.viewOnOriginalSite##About the authors
Sergey V. Kotov
Pirogov Russian National Research Medical University; Moscow Multidisciplinary Clinical Center «Kommunarka» of the Moscow Department of Health; Pirogov City Clinical Hospital No. 1
Email: urokotov@mail.ru
ORCID iD: 0000-0003-3764-6131
Dr. Sc., Full Prof., Head of Urology and Andrology Department, Institution of Surgery
Russian Federation, 1, Ostrovityanov Street, Moscow, 117997; 108814, Moscow, pos. Sosenskoye, ul. Sosenskij stan, 8; 8 Leninsky Prospekt, Moscow, 119049Nikita M. Sokolov
Pirogov Russian National Research Medical University; Moscow Multidisciplinary Clinical Center «Kommunarka» of the Moscow Department of Health
Author for correspondence.
Email: 4eaman@gmail.com
ORCID iD: 0000-0001-9091-8189
Postgraduate of Department of Urology and Andrology named after N.A. Lopatkin, Institution of Surgery; Urologist of Urology Division
Russian Federation, 1, Ostrovityanov Street, Moscow, 117997; 108814, Moscow, pos. Sosenskoye, ul. Sosenskij stan, 8Anna A. Yapina
Pirogov Russian National Research Medical University
Email: yapina0@mail.ru
ORCID iD: 0009-0008-9092-4472
Student of Faculty of Medicine
Russian Federation, 1, Ostrovityanov Street, Moscow, 117997Anvar G. Yusufov
Pirogov Russian National Research Medical University; Moscow Multidisciplinary Clinical Center «Kommunarka» of the Moscow Department of Health
Email: anvar.yusufov@mail.ru
ORCID iD: 0000-0001-8202-3844
PhD, Associate Professor of Urology and Andrology Department named after N.A. Lopatkin, Institution of Surgery; Head of Urology Division
Russian Federation, 1, Ostrovityanov Street, Moscow, 117997; 108814, Moscow, pos. Sosenskoye, ul. Sosenskij stan, 8Svetlana M. Titkova
Pirogov Russian National Research Medical University
Email: stitkova63@yandex.ru
ORCID iD: 0000-0001-5477-0084
Senior Research Fellow, Experimental Surgery Department, Institution of Surgery
Russian Federation, 1, Ostrovityanov Street, Moscow, 117997Ekaterina I. Klimenko
Pirogov City Clinical Hospital No. 1
Email: 4eaman@gmail.com
Pathologist, Department of Morbid Anatomy
Russian Federation, 8 Leninsky Prospekt, Moscow, 119049Alexander P. Raksha
Pirogov Russian National Research Medical University; Pirogov City Clinical Hospital No. 1
Email: 4eaman@gmail.com
Dr. Sc., Full Prof., Department of Clinical Pathological Anatomy; Head of Department of Morbid Anatomy, Institution of Human Biology and Pathology
Russian Federation, 1, Ostrovityanov Street, Moscow, 117997; 8 Leninsky Prospekt, Moscow, 119049Mikhail V. Anurov
Pirogov Russian National Research Medical University
Email: anurov@rsmu.ru
ORCID iD: 0000-0001-7512-2641
Dr. Sc., Head of Experimental Surgery Department, Institution of Surgery
Russian Federation, 1, Ostrovityanov Street, Moscow, 117997References
- Sharma KL, Alom M, Trost L. The Etiology of Peyronie’s Disease: Pathogenesis and Genetic Contributions. Sex Med Rev. 2020;8:314–23. https://doi.org/10.1016/j.sxmr.2019.06.004.
- Kotov S.V., Yusufov A.G. Penilecorporoplasty using buccal mucosa graft: incision and grafting (surgical technique). Androl Genit Surg. 2016;17:68–71. https://doi.org/10.17650/2070-9781-2016-17-4-68-71.
- Kotov S.V., Yusufov A.G., Sokolov N.M., Khachatryan A.A. et al. Influence of Penile Rehabilitation on the long-term results of Plaque Incision and Grafting in patients with Peyronie’s Disease. Androl Genit Surg. 2024;25. https://doi.org/10.62968/2070-9781-2024-25-4-37-46.
- Gamidov SI, Popkov VM, Shatylko TV, Ovchinnikov RI, Korolev AY, Popova AY, Gasanov NG. Erectile function after corporoplasty in patients with peyronies disease. Urologiia. 2019;(4):80–84. Russian. PMID: 31535810.
- Bajic P., Siebert A.L., Amarasekera C.A., Miller C.H., Levine L.A. Comparing Outcomes of Grafts Used in Peyronie’s Disease Surgery: a Systematic Review. Curr Sex Heal Reports. 2020;12:236–43. https://doi.org/10.1007/s11930-020-00283-3.
- Garcia-Gomez B., Ralph D., Levine L., Moncada-Iribarren I., Djinovic R., Albersen M et al. Grafts for Peyronie’s disease: a comprehensive review. Andrology. 2018;6:117–26. https://doi.org/10.1111/andr.12421.
- Al-Thakafi S., Al-Hathal N. Peyronie’s disease: A literature review on epidemiology, genetics, pathophysiology, diagnosis and work-up. Transl Androl Urol. 2016;5:280–89. https://doi.org/10.21037/tau.2016.04.05.
- Krakhotkin D.V., Chernylovskyi V.A., Mottrie A., Greco F., Bugaev R.A. New insights into the pathogenesis of Peyronie’s disease: A narrative review. Chronic Dis Transl Med 2020;6:165–81. https://doi.org/10.1016/j.cdtm.2020.06.001.
- Mitsui Y., Yamabe F., Hori S., Uetani M., Kobayashi H., Nagao K. et al. Molecular Mechanisms and Risk Factors Related to the Pathogenesis of Peyronie’s Disease. Int J Mol Sci. 2023;24. https://doi.org/10.3390/ijms241210133.
- Bitsch M., Kromann-Andersen B., Schou J., Sjontoft E. The elasticity and the tensile strength of tunica albuginea of the corpora cavernosa. J Urol. 1990;143:642–5. https://doi.org/10.1016/S0022-5347(17)40047-4.
- Kandabarow A.M., Chuang E., McKenna K., Le B., McVary K., Colombo A. Tensile Strength of Penile Tunica Albuginea in a Human Model. J Urol. 2022;207:2022. https://doi.org/10.1097/ju.0000000000002592.10.
- Schmidt J., Goode D., Flannigan R., Mohammadi H. A review of the experimental methods and results of testing the mechanical properties of Tunica Albuginea. J Med Eng Technol. 2023;47:234–41. https://doi.org/10.1080/03091902.2023.2300829.
- Hsu G.L., Brock G., Martinez-Pineiro L., Von Heyden B., Lue T.F., Tanagho E.A. Anatomy and strength of the tunica albuginea: Its relevance to penile prosthesis extrusion. J Urol. 1994;151:1205–8. https://doi.org/10.1016/S0022-5347(17)35214-X.
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