Related Experiment Video
Updated: Feb 14, 2026

Assessment of Dependence in Activities of Daily Living Among Older Patients in an Acute Care Unit
Published on: September 30, 2020
[Long term follow up of a patient with type I vitamin D-dependent rickets]
Luis Velásquez-Jones1, Mara Medeiros2, Saúl Valverde-Rosas1
1Departamento de Nefrología Dr. Gustavo Gordillo Paniagua, Hospital Infantil de México Federico Gómez, México D.F., México.
Background:
Vitamin D dependent rickets type I is a rare hereditary disease due to a mutation in CYP27B1 encoding the 1α-hydroxylase gene. Clinically, the condition is characterized by hypocalcemic rickets in early infancy due to a deficit in the production of the vitamin D active metabolite 1,25-dihydroxy-vitamin D3.
Case Report:
We report the case of a patient diagnosed at 11 months with follow-up until 9 years of age.
Conclusions:
The pathophysiology of the disease and the relevance of early diagnosis and management are discussed.
More Related Videos
Related Concept Videos
Vitamins
Long-term Depression
Frequency-dependent Selection
Role of Skin in Vitamin D Synthesis
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin...
Mineral, Vitamin and Water Absorption
Drug Dependence

