Document Type
Article
Department
Paediatrics and Child Health (East Africa)
Abstract
Introduction: International guidelines recommend a multi-faceted approach for successful diagnoses of primary ciliary dyskinesia (PCD). In the absence of a gold standard test, a combination of genetic testing/microscopic analysis of structure and function/nasal nitric oxide measurement is used. In resourcelimited settings, often none of the above tests are available, and in South Africa, only transmission electron microscopy (TEM) is available in central anatomical pathology departments. The aim of this study was to describe the clinical and ultrastructural findings of suspected PCD cases managed by pediatric pulmonologists at a tertiary-level state funded hospital in Johannesburg.
Methods: Nasal brushings were taken from 14 children with chronic respiratory symptoms in keeping with a PCD phenotype. Ultrastructural analysis in accordance with the international consensus guidelines for TEM-PCD diagnostic reporting was undertaken.
Results: TEM observations confirmed 43% (6) of the clinically-suspected cases (hallmark ultrastructural defects in the dynein arms of the outer doublets), whilst 57% (8) required another PCD testing modality to support ultrastructural observations. Of these, 25% (2) had neither ultrastructural defects nor did they present with bronchiectasis. Of the remaining cases, 83% (5) had very few ciliated cells (all of which were sparsely ciliated), together with goblet cell hyperplasia. There was the apparent absence of ciliary rootlets in 17% (1) case.
Discussion: In resource-limited settings in which TEM is the only available testing modality, confirmatory and probable diagnoses of PCD can be made to facilitate early initiation of treatment of children with chronic respiratory symptoms.
Publication (Name of Journal)
Frontiers in Pediatrics
DOI
10.3389/fped.2023.1247638
Recommended Citation
Birkhead, M.,
Otido, S.,
Mabaso, T.,
Mopeli, K.,
Tlhapi, D.,
Verwey, C.,
Dangor, Z.
(2023). Ultrastructure for the diagnosis of primary ciliary dyskinesia in South Africa, a resource-limited setting. Frontiers in Pediatrics, 11, 1-9.
Available at:
https://ecommons.aku.edu/eastafrica_fhs_mc_paediatr_child_health/541
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.