Journals / İzmir Dr. Behçet Uz Çocuk Hastanesi Dergisi / 2011 / Cilt: 1 - Sayı: 3

Vitamin D dependent rickets type I and II: Case reports

Vitamin D bağımlı raşitizm Tip I ve Tip II: Olgu sunumları

Pages
131–136
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

In this article, these rare genetic diseases are presented with two cases.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Two rare genetic diseases can cause rickets in children.
📊
Key Findings & Data:Alpha 1 hydroxylase enzyme is defective, and calcitriol can not be synthesized in vitamin D dependent rickets type 1 or pseudovitamin D deficiency.
💡
Conclusion & Impact:In this article, these rare genetic diseases are presented with two cases.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Two rare genetic diseases can cause rickets in children. Alpha 1 hydroxylase enzyme is defective, and calcitriol can not be synthesized in vitamin D dependent rickets type 1 or pseudovitamin D deficiency. Vitamin D receptors are defective the disease is known as hereditary vitamin D resistant- rickets or vitamin D dependent rickets type 2. Both diseases are rare autosomal recessive disorders, and characterized with hypocalcemia, elevated parathyroid hormone and alkaline phosphatase levels and similar clinical features as nutritional rickets. The differential diagnosis of these diseases can be made with determination of serum 1.25(OH)2D levels. Patients with type 1 have lower levels of 1.25(OH)2D, but patients with type 2 have increased levels of 1.25 (OH)2D. In this article, these rare genetic diseases are presented with two cases.

Özet

İki ender genetik hastalık çocuklarda raşitizme neden olur. Vitamin D bağımlı raşitizm tip 1 ya da diğer adıyla psödovitamin D eksikliğinde 1 alfa hidroksilaz enzimi kusurludur ve kalsitriol sentezlenemez. Vitamin D bağımlı raşitizm tip 2 ya da herediter vitamin D rezistan riketsde ise vitamin D reseptörleri kusurludur. Ender görülen ve otozomal resesif geçişli olan bu iki hastalık hipokalsemi, artmış parathormon ve alkalen fosfataz değerleri ve besinsel raşitizme benzer klinik bulgular ile karakterizedir. Bu iki hastalığın ayırıcı tanısında serum 1,25(OH)2D değerleri yol göstericidir. Tip 1’de 1,25(OH)2D değeri düşük iken, tip 2’de yüksektir. Bu makalede ender görülen bu iki hastalık birer olgu ile sunulmuştur.

🔖

Cite This Article

GÜLEZ, P., HIZARCIOĞLU, M. (2011). Vitamin D dependent rickets type I and II: Case reports. İzmir Dr. Behçet Uz Çocuk Hastanesi Dergisi, Cilt: 1 - Sayı: 3, 131–136. https://ajindex.com/articles/268744

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (6)

  1. Greenbaum LA. Rickets and Hypervitaminosus D. In: Behrman RE, Kliegman RM, Jenson HB, Stanton BF (editors. Nelson Textbook of Peditrics. 18th ed. WB Saunders, Philadelphia, 2007. p.253-259
  2. Ataş A, Çakmak A, Soran M. D vitamini metabolizması ve rikets hastalığı. Bakırköy Tıp Dergisi 2008;4:1-7
  3. Bereket A. Kalsiyum ve D vitamini metabolizması. Türkiye Klinikleri J Pediatr Sci 2006;2:47-55
  4. Darendeliler F, Baş F, Hançerli S. Vitamin D bağımlı rahitis Tip I ve Tip II. Türkiye Klinikleri J Pediatr Sci 2008;4:51-5
  5. Malloy PJ, Feldman D. Genetic disorders and defects in vitamin D action. Endocrinol Metab Clin North Am 2010;39:333-46.
  6. Koren R. Vitamin D receptor defects: the story of hereditary resistance to vitamin D. Pediatr Endocrinol Rev 2006;3:470-5. PMid:17551468 7. Ma NS, Malloy PJ, Pitukcheewanont P, Dreimane D, Geffner ME, Feldman D. Hereditary vitamin D resistant rickets: Identification of a novel splice site mutation in the vitamin D receptor gene and succesful treatment with oral calcium therapy. Bone 2009;45:743-46. http://dx.doi.org/10.1016/j.bone.2009.06.003 PMid:19523546 PMCid:2782671 8. Prader A, Illig R, Heierli E. An unusual form of primary vitamin D-resistant rickets with hypocalcemia and autosomal dominant transmission: hereditary pseudo-deficiency rickets. Helv Paediatry Acta 1961;16:452-68.