Search results for "Primary cilia"

Adaptation to Disease and Anxiety-Depressive Clinic in the Paediatric Patient with Primary Ciliary Dyskinesia

2020

Introduction: Primary ciliary dyskinesia is a rare, autosomal recessive disease of low prevalence in paediatrics. Studies in psychology have not analysed the role of family-psychological variables in rare diseases such as primary ciliary dyskinesia. Objectives: this study aims to analyse the presence of clinical anxiety-depressive and perception threat of disease in patients with dyskinesia and evaluate the adaptation to the disease. Material-Methods: All patients with primary ciliary dyskinesia (9 to 18 years of age), attended in the Infantile Pneumology Unit of HCUV, from July 2015 to January 2019, who accepted to complete the Anxiety Depression (HADS) and Perception of Disease Threat (BI…

Understanding Primary Ciliary Dyskinesia: Experience From a Mediterranean Diagnostic Reference Centre

2020

Background: Due to the lack of a gold standard diagnostic test, reference centres with experienced personnel and costly procedures are needed for primary ciliary dyskinesia (PCD) diagnostics. Diagnostic flowcharts always start with clinical symptoms. Therefore, the aim of this work is to define differential clinical criteria so that only patients clinically compatible with PCD are referred to reference centres. Materials and methods: 18 variables from 476 Mediterranean patients with clinically suspicious PCD were collected. After analysing cilia function and ultrastructure, 89 individuals were diagnosed with PCD and 387 had a negative diagnosis. Simple logistic regression analysis, consider…

2021

IntroductionPrimary ciliary dyskinesia (PCD) is a rare, genetic, multiorgan disease with an estimated prevalence of 1 in 10 000. It affects mainly the upper and lower airways due to impaired mucociliary clearance. Almost all patients have sinonasal or otologic (ear–nose–throat, ENT) problems, although the ENT clinical phenotype may present great variability. Despite that, data on PCD ENT manifestations are scarce and based on small single-centre studies. To date, we know little about the spectrum and severity of PCD ENT disease, its association with lung disease, its course over life and its determinants of prognosis.This study protocol describes the aims and methods of the first prospectiv…

Papel de la inmunofluorescencia y el diagnóstico molecular en la caracterización de la discinesia ciliar primaria

2019

Knowledge of Rare Respiratory Diseases among Paediatricians and Medical School Students.

2020

Alpha-1-antitrypsin deficiency (AATD) and primary ciliary dyskinesia (PCD) are underdiagnosed rare diseases showing a median diagnostic delay of five to ten years, which has negative effects on patient prognosis. Lack of awareness and education among healthcare professionals involved in the management of these patients have been suggested as possible causes. Our aim was to assess knowledge of these diseases among paediatricians and medical school students to determine which knowledge areas are most deficient. A survey was designed with questions testing fundamental aspects of the diagnosis and treatment of AATD and PCD. A score equal to or greater than 50% of the maximum score was set as th…

Implementation of a gene panel for the genetic diagnosis of primary ciliary dyskinesia

2020

Background: Primary ciliary dyskinesia (PCD) is a disease characterized by an alteration in the ciliary structure that causes an abnormal clearance of respiratory secretions. Its diagnosis is complex and is based on a combination of different techniques. The objective of this study was to design a gene panel including all known caustive genes, and to verify the utility for diagnostic in a cohort of Spanish patients. Methods: Multicenter cross-sectional study of patients with high suspicion of PCD, applying the criteria of the European Respiratory Society. Design a gene panel for mass sequencing with SeqCap EZ technology, including 44 PCD-related genes. Results: 79 patients were included, 53…

Implementation of a gene panel for genetic diagnosis of primary ciliary dyskinesia

2021

Abstract Introduction Primary ciliary dyskinesia (PCD) is characterized by an alteration in the ciliary structure causing difficulty in the clearance of respiratory secretions. Diagnosis is complex and based on a combination of techniques. The objective of this study was to design a gene panel including all known causative genes, and to corroborate their diagnostic utility in a cohort of Spanish patients. Methods This was a multicenter cross-sectional study of patients with a high suspicion of PCD according to European Respiratory Society criteria. We designed a gene panel for massive sequencing using SeqCap EZ capture technology that included 44 genes associated with PCD. Results We includ…

IFT46 Expression in the Nasal Mucosa of Primary Ciliary Dyskinesia Patients: Preliminary Study

2021

Este artículo se encuentra disponible en la siguiente URL: https://journals.sagepub.com/doi/pdf/10.1177/2152656721989288 Background: Primary ciliary dyskinesia (PCD) is characterised by an imbalance in mucociliary clearance leading to chronic respiratory infections. Cilia length is considered to be a contributing factor in cilia movement. Recently, IFT46 protein has been related to cilia length. Therefore, this work aims to study IFT46 expression in a PCD patients cohort and analyse its relationship with cilia length and function, as it was not previously described. Materials and methods: The expression of one intraflagellar transport (IFT46) and two regulating ciliary architecture (FOXJ1 a…

Primary ciliary dyskinesia in adults with bronchiectasis: Data from the Embarc registry

2018

Introduction: Primary ciliary dyskinesia (PCD) is an inherited cause of bronchiectasis where defects in motile cilia result in failure to clear mucus. Individuals have life-long productive cough and recurrent infections Methods: The embarc registry is a prospective pan-European observational study of adults with bronchiectasis. Data entered into the registry between March 2015 and Jan 2018 was assessed. Disease severity in PCD was compared to two age and gender matched cohorts, the first consisting of individuals with immune deficiency and a second with idiopathic disease. Results: 287/11204 individuals (2.6%) were reported to have PCD. 65% were female, reflecting the female predominance in…

Primary ciliary dyskinesia assessment by means of optical flow analysis of phase-contrast microscopy images

2014

Primary ciliary dyskinesia implies cilia with defective or total absence of motility, which may result in sinusitis, chronic bronchitis, bronchiectasis and male infertility. Diagnosis can be difficult and is based on an abnormal ciliary beat frequency (CBF) and beat pattern. In this paper, we present a method to determine CBF of isolated cells through the analysis of phase-contrast microscopy images, estimating cilia motion by means of an optical flow algorithm. After having analyzed 28 image sequences (14 with a normal beat pattern and 14 with a dyskinetic pattern), the normal group presented a CBF of 5.2 +/- 1.6 Hz, while the dyskinetic patients presented a 1.9 +/- 0.9 Hz CBF. The cutoff …