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Why human prepuce is a valuable resource in science? Histological, ultrastructural, immunohistochemical and statistical analysis / ¿Por qué el prepucio humano es un recurso valioso en la ciencia? Análisis histológicos, ultraestructurales, inmunohistoquímicos y estadísticos
Tobeigei, Faisal; Zaki, Mohamed Samir A; Shati, Ayed A; Abdalla, Asim M; Mohammed, Heitham M; Bahamdan, Khalid; Osman, Rihab; Dawood, Samy A; Essa, Madani; Alqahtani, Riyadh; Mohamed, Gamal; Badi, Rehab M; Eid, Refaat A.
  • Tobeigei, Faisal; King Khalid University. College of Medicine. Department of Internal Medicine. Abha. SA
  • Zaki, Mohamed Samir A; King Khalid University. College of Medicine. Department of Anatomy. Abha. SA
  • Shati, Ayed A; King Khalid University. College of Medicine. Department of Child Health. Abha. SA
  • Abdalla, Asim M; King Khalid University. College of Medicine. Department of Anatomy. Abha. SA
  • Mohammed, Heitham M; King Khalid University. College of Medicine. Department of Anatomy. Abha. SA
  • Bahamdan, Khalid; King Khalid University. College of Medicine. Department of Internal Medicine. Abha. SA
  • Osman, Rihab; King Khalid University. College of Medicine. Department of Anatomy. Abha. SA
  • Dawood, Samy A; King Khalid University. College of Medicine. Department of Pediatric. Abha. SA
  • Essa, Madani; Jizan University. College of Medicine. Department of Internal Medicine. Abha. SA
  • Alqahtani, Riyadh; Ministry of health/Aseer Central Hospital. Department of Dermatology. Abha. SA
  • Mohamed, Gamal; Jazan University. Department of Human Anatomy. Jazan. SA
  • Badi, Rehab M; King Khalid University. College of Medicine. Department of Physiology. Abha. SA
  • Eid, Refaat A; King Khalid University. College of Medicine. Department of Pathology. SA
Int. j. morphol ; 40(4): 895-901, 2022. ilus, tab, graf
Article in English | LILACS | ID: biblio-1405264
ABSTRACT

SUMMARY:

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.
RESUMEN
RESUMEN El presente trabajo de investigación se realizó para examinar las características histológicas y ultraestructurales de las muestras de prepucio, así como la localización y el análisis estadístico de la vimentina y la proteína S100. Los urólogos han intentado trabajar durante mucho tiempo con el prepucio, que se usa para tratar una variedad de problemas uretrales. Se recolectaron biopsias de piel del prepucio de seis niños en el momento de la circuncisión y se procesaron para microscopía óptica, examen con microscopio electrónico, técnicas inmunohistoquímicas y análisis estadístico. Histológicamente, la epidermis del prepucio mostraba crestas puntiagudas focales, intercaladas con surcos, hiperpigmentación leve, tejido conectivo más laxo y abundantes componentes vasculares. Inmunohistoquímicamente, la existencia de melanocitos y células dendríticas epidérmicas (células de Langerhans), así como músculo liso en la dermis, se tiñeron positivamente para vimentina. Además, hubo una reactividad positiva de las células dendríticas epidérmicas en la epidermis y alrededor de los corpúsculos del tacto (de Meissner) en la dermis para la tinción de la proteína S100. Ultraestructuralmente, los espacios intercelulares del prepucio se ensancharon, los melanocitos descansaban sobre una membrana basal plegada y el contenido desmosómico se redujo, con un núcleo eucromático activo prominente. Las proyecciones citoplasmáticas estaban distendidas y alargadas, y los vasos sanguíneos intersticiales estaban rodeados por células endoteliales y descansaban sobre una membrana basal. También había fibras de colágeno mínimas en el intersticio. Las características histológicas y ultraestructurales del prepucio, así como los estudios inmunohistológicos utilizando vimentina y proteína S100 como filamentos intermedios y el análisis estadístico, demostraron que es un recurso científico útil.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Foreskin Limits: Humans / Male Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2022 Type: Article Affiliation country: Saudi Arabia Institution/Affiliation country: Jazan University/SA / Jizan University/SA / King Khalid University/SA / Aseer Central Hospital+SA

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Full text: Available Index: LILACS (Americas) Main subject: Foreskin Limits: Humans / Male Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2022 Type: Article Affiliation country: Saudi Arabia Institution/Affiliation country: Jazan University/SA / Jizan University/SA / King Khalid University/SA / Aseer Central Hospital+SA