G2-Lymphocyte Chromosomal Radiosensitivity in Patients With Lps Responsive Beige-Like Anchor Protein (Lrba) Deficiency Publisher Pubmed



Mozdarani H¹ ; Kiaee F^{2, 3} ; Fekrvand S² ; Azizi G⁴ ; Yazdani R² ; Zakidizaji M¹ ; Mozdarani S⁵ ; Mozdarani S⁵ ; Nosrati H⁶ ; Abolhassani H^{2, 7} ; Aghamohammadi A²
Source: International Journal of Radiation Biology Published:2019

Abstract

Lipopolysaccharide-responsive, beige-like anchor protein (LRBA) deficiency is an autosomal recessive primary immunodeficiency disease characterized by a CVID-like phenotype, particularly severe autoimmunity and inflammatory bowel disease. This study was undertaken to evaluate radiation sensitivity in 11 LRBA-deficient patients. Therefore, stimulated lymphocytes of the studied subjects were exposed to a low dose γ-radiation (100 cGy) in the G2 phase of the cell cycle and chromosomal aberrations were scored. Lymphocytes of age-sex matched healthy individuals used in the same way as controls. Based on the G2-assay, six (54.5%) of the patients had higher radiosensitivity score comparing to the healthy control group, forming the radiosensitive LRBA-deficient patients. This chromosomal radiosensitivity showed that these patients are predisposed to autoimmunity and/or malignancy, and should be protected from unnecessary diagnostic and therapeutic procedures using ionizing radiation and exposure to other DNA damaging agents. © 2019, Copyright © 2019 Taylor & Francis Group LLC.