Preputial sac
Preputial sac is the term applied to the space between the prepuce and the glans penis.[1] The preputial sac may also be called the sub-preputial space.
The preputial sac is lined with mucosa as is appropriate for an internal organ.[2]
Parkash et al. (1973) reported that epithelial debris accumulates in the preputial sac and forms smegma.[3], a natural, normal, benign, healthy, and beneficial product of the body, which will collect in the preputial sac.
Wetness in the preputial sac is associated with having a longer prepuce.[4] Parkash et al. (1982) studied the wetness to learn its source. The authors concluded "that the space is kept moist and also clean in those with preputial stenosis, by the secretions of the prostate, supplemented by the seminal secretion of the mucin content of the secretion of the urethral glands."[5] The authors further reported that the wetness is rich in lytic material.[5] Lytic material causes lysis or a breakdown of cell walls.[6] Moistness also may be maintained by transudation.[2]
Lakshmanan & Parkash (1980) described the muscle fibers in the prepuce (known as the dartos), which contract to keep the prepuce snugly close to the glans penis. The muscle fibers form a whorl at the tip to keep the tip of the foreskin and the preputial sac closed against the outside world and contamination.[7]
Cold & Taylor (1999) described a healthy microbiome that lives within the preputial sac.[2] They also reported that Langerhans cells are found in the mucosa of the preputial sac. Langerhans cells are part of the immunological defenses of the penis. De Witte et al. (2007) reported that Langerhans cells produce a substance named langerin. The langerin offers protection against HIV infection:
| “ | Langerin is a natural barrier to HIV-1 transmission by Langerhans cells Langerin prevents HIV-1 transmission by LCs. HIV-1 captured by Langerin was internalized into Birbeck granules and degraded. Langerin inhibited LC infection and this mechanism kept LCs refractory to HIV-1 transmission; inhibition of Langerin allowed LC infection and subsequent HIV-1 transmission. Notably, LCs also inhibited T-cell infection by viral clearance through Langerin. Thus Langerin is a natural barrier to HIV-1 infection, and strategies to combat infection must enhance, preserve or, at the very least, not interfere with Langerin expression and function.[8] |
References
- ↑
(2012). preputial sac
, The Free Dictionary by Farlex. Retrieved 7 October 2022. - ↑ a b c
Cold CJ, Taylor JR. The prepuce. BJU Int. January 1999; 83, Suppl. 1: 34-44. PMID. DOI. Retrieved 8 July 2021.
- ↑ Parkash S, Jayakumar S, Subramanyan K, Chaudhuri S. Human subpreputial collection: its nature and formation.. J. Urol.. August 1973; 110(2): 111-2. PMID. DOI. Retrieved 7 October 2022.
- ↑ O'Farrell N, Chung CK, Weiss, Helen. Foreskin length in uncircumcised men is associated with subpreputial wetness. Int J STD AIDS.. December 2008; 19(23): 821-3. PMID. DOI. Retrieved 7 October 2022.
- ↑ a b Parkash S, Raghuram R, Venkatesan K, Ramakrishnan S. Sub-preputial wetness - Its nature. Ann Nat Med Sci (India). July 1982; 16(3): 109-12. Retrieved 7 October 2022.
- ↑ (2012).
Lytic
, The Free Dictionary by Farlex. Retrieved 7 October 2022. - ↑ Lakshmanan S, Parkash S. Human prepuce: some aspects of structure and function. Indian J Surg. 1980; 44: 134-7.
- ↑ de Witte L, Nabatov A, Pion M, Fluitsma D, de Jong MAWP, de Gruijl T, Piguet V, van Kooyk Y, Geijtenbeek TBH. Langerin is a natural barrier to HIV-1 transmission by Langerhans cells
. Nature Medicine. 4 March 2007; 13(3): 367-71. PMID. PMC. DOI. Retrieved 6 October 2022.
