Öz
Pakionişi konjenita (PK), nadir görülen kalıtsal ektodermal hastalık olup temel olarak hipertrofik tırnak distrofisi ve fokal palmoplantar keratoderma ile karakterizedir. Hastalık PK-1 ve PK-2 şeklinde keratin genindeki mutasyonlarla korelasyon gösteren iki klinik alt gruba ayrılmaktadır. Her ne kadar her iki grubun en belirgin klinik özelliği hipertrofik tırnak distrofisi olsa da, oral lökokeratozis genellikle PK-1’de görülürken, PK-2 ise sıklıkla tırnak distrofisi, yaygın steatosistoma, natal diş ve saç anomalileri ile prezente olur. Burada PK-2’nin klasik bulguları ile prezente olmuş ve ailesinde dört kuşağı etkilenmiş olan bir olgu sunulmuştur.
Anahtar Kelimeler: Çocuk, Keratin, Tırnak, Pakionişi konjenita, Palmoplantar keratoderma
Referanslar
- Smith F. The molecular genetics of keratin disorders. Am J Clin Dermatol 2003;4:347-64.
- leachman SA, Kaspar Rl, Fleckman P, Florell SR, Smith FJ, Mclean WH, et al. Clinical and pathological features of pachyonychia congenita. J Investig Dermatol Symp Proc 2005;10:3-17.
- Smith FJ, liao H, Cassidy AJ, Stewart A, Hamill KJ, Wood P, et al. The genetic basis of pachyonychia congenita. J Investig Dermatol Symp Proc 2005;10:21-30.
- Jadassohn J lF. Pachyonychia congenita. Keratosis Disseminata Circumscripta (follicularis). Tylomata. In: neisser A (ed). leuko- keratosis linguae, in Ikonographia Dermatologica. J.E.e., Berlin: urban & Schwarzenberg, 1906:29-31.
- Jackson AD, lawler SD. Pachyonychia congenita; A report of six cases in one family, with a note on linkage data. Ann Eugen 1951;16:142-46.
- Kökçam i, uyar B. Bir Pakionişi Konjenita olgusu. T Klin Dermatoloji 1998:8:106-9.
- Hannaford RS, Stapleton K. Pachyonychia congenita tarda. Australas J Dermatol 2000;41:175-7.
- Xiao SX, Feng YG, Ren XR, Tan SS, li l, Wang JM, et al. A novel mutation in the second half of the keratin 17 1A domain in a large pedigree with delayed-onset pachyonychia congenita type 2. J Invest Dermatol 2004;122:892-5.
- Smith FJ, Hansen CD, Hull PR, leachman SA, Kaspar Rl, Schwartz ME, et al. Pachyonychia Congenita. Gene Reviews. [cited 26 July, 2012; Available from: http://www.ncbi.nlm.nih.gov/ books/nBK1280/.
- Scholz IM, Helmbold P. Pachyonychia congenita type 2. J Dtsch Dermatol Ges 2011;9:144-45.
- Connors JB, Rahil AK, Smith FJ, Mclean WH, Milstone lM. Delayed-onset pachyonychia congenita associated with a novel mutation in the central 2B domain of keratin 16. Br J Dermatol 2001;144:1058-62.
- Vaccaro M, Guarneri F, Barbuzza O, Guarneri C. Pachyonychia congenita tarda affecting only the nails. Dermatol Online J 2008;14:12.
- Milstone lM, Fleckman P, leachman SA, leigh IM, Paller AS, van Steensel MA, et al. Treatment of pachyonychia congenita. J Investig Dermatol Symp Proc 2005;10:18-20.
- Hickerson RP, Smith FJ, Reeves RE, Contag CH, leake D, leachman SA, et al. Single-nucleotide-specific siRnA targeting in a dominant negative skin model. J Invest Dermatol 2008;128:594- 605.
- Hickerson RP, leake D, Pho lH, leachman SA, Kaspar Rl. Rapamycin selectively inhibits expression of an inducible keratin (K6a) in human keratinocytes and improves symptoms in pachyonychia congenita patients. J Dermatol Sci 2009;56:82-8.
- Swartling C, Vahlquist A. Treatment of pachyonychia congenita with plantar injections of botulinum toxin. Br J Dermatol 2006;154: 763-65.