CFTR protein expression was studied by immunohistochemistry in paraffin sections of testicular biopsies of six infertile men: Sertoli cell only syndrome, maturation arrest, secondary obstructive azoospermia, primary obstructive azoospermia due to congenital bilateral absence of the vas deferens (CBAVD), severe oligozoospermia, and retrograde ejaculation.
Distribution of CFTR mutations in the Czech population: positive impact of integrated clinical and laboratory expertise, detection of novel/de novo alleles and relevance for related/derived populations.
Molecular study of the cystic fibrosis transmembrane conductance regulator (CFTR) gene responsible for cystic fibrosis could show the relationship between this disease and bilateral absence of vas deferens.
The overall frequency of CFTR mutations in CBAVD and the odds ratio (OR) for common specific alleles were pooled under random-effect or fixed-effect model as appropriate.
CBAVD has been associated with mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene and consequently, genetic counselling has to be addressed before beginning ICSI procedure.
As the vas deferens seems to be one of the tissues most susceptible to a reduction in the normal CFTR transcripts levels, and as two mild mutations are sufficient to induce CBAVD phenotype, these findings raise the possibility that these uncommon variants may be a novel cause of CBAVD.
The common CFTR gene mutations were tested on blood samples from 53 infertile men with non-CAVD obstructive azoospermia and 50 normal men as control individuals.
According to present knowledge, congenital bilateral absence of vas deferens (CBAVD), acute recurrent or chronic pancreatitis and disseminated bronchiectasis, all with CFTR dysfunction, are CFTR-RDs.
Mutation studies in the CFTR gene in Asian Indian subjects with congenital bilateral absence of vas deferens: report of two novel mutations and four novel variants.
Among them, 26 patients (5 having CF, 10 CBAVD (congenital bilateral absence of the vas deferens) and 11 with CF-like symptoms) and 14 healthy subjects were compound heterozygous for a second CFTR mutation.
The identification of mutations in both CFTR alleles in CBAVD patients is a crucial requirement for calculating the risk of producing a child with full-blown CF if the female partner is a healthy CF carrier.
Second, expression of the 621+3 A>G variant in HeLa cells using a hybrid minigene showed that 39.5+/-1.1% of transcripts were correctly spliced, indicating that its effects on mRNA splicing are similar to those of the CFTR intron 8 5T variant, associated with congenital bilateral absence of vas deferens (CBAVD), but not with CF.
To investigate whether genetic modifiers of cystic fibrosis (CF) lung disease also predispose to congenital bilateral absence of the vas deferens (CBAVD) in association with cystic fibrosis transmembrane conductance regulator (CFTR) mutations.
The association between CBAVD and mutated CFTR (cystic fibrosis transmembrane conductance regulator) alleles is well demonstrated in Caucasians, but the identity of CBAVD-susceptibility genes remains elusive in Asians.
Congenital bilateral absence of the vas deferens (CBAVD) is a frequent cause of obstructive azoospermia, and caused by mutations in the cystic fibrosis transmembrane conductance regulator (CFTR) gene.