Faisal Tobeigei; Mohamed Samir A. Zaki; Ayed A. Shati; Asim M. Abdalla; Heitham M. Mohammed; Khalid Bahamdan; Rihab Osman; Samy A. Dawood; Madani Essa; Riyadh Alqahtani; Gamal Mohamed; Rehab M. Badi & Refaat A. Eid

This research was to examine the histological and ultrastructural characteristics of prepuce samples, as well as vimentin and S100 protein localization and statistical analysis. Urologists have long struggled with the prepuce, which is used to treat a variety of urethral problems. Skin biopsies were collected from the prepuce at the moment of circumcision and processed for light microscopy, electron microscope examination, immunohistochemical techniques, and statistical analysis in a total of six boys. Histologically, the prepuce epidermis displayed focal spiky ridges, which are saw-toothed interspersed with sulci, slight hyperpigmentation, looser connective tissue and plentiful vascular components. Immunohistochemically, the existence of melanocytes and Langerhans cells in the epidermis, as well as smooth muscles in the dermis, was stained positively for vimentin. Also, there was a positive reactivity of the Langerhans cells in the epidermis and around Meissner's corpuscles in the dermis for S100 protein staining. Ultrastructurally, the prepuce's intercellular gaps were widened, melanocytes rested on a folded basement membrane, and desmosomal content was reduced, with a prominent active euchromatic nucleus. Cytoplasmic projections were distended and elongated, and the interstitial blood vessels were surrounded by endothelial cells and rested on a basement membrane. There were also minimal collagen fibers in the interstitium. The prepuce's histological and ultrastructural features, as well as immunohistological studies using vimentin and S100 protein as intermediate filaments and statistical analysis, all demonstrated that it is a useful scientific resource.

KEY WORDS: Prepuce; Light Microscopy; Vimentin; S100 Protein; Electron Microscopy; Statistical Analysis.

TOBEIGEI, F.; ZAKI, M. S. A.; SHATI, A. A.; ABDALLA, A. M.; MOHAMMED, H. M.; BAHAMDAN, K.; OSMAN, R.; DAWOOD, S. A.; ESSA, M.; ALQAHTANI, R., MOHAMED, G.; BADI, R. M. & EID, R. A. Why human prepuce is a valuable resource in science? Histological, ultrastructural, immunohistochemical and statistical analysis. Int. J. Morphol., 40(4):895-901, 2022.