Background: Pathogenic variants in have been reported in cases of both syndromic and nonsyndromic retinitis pigmentosa (RP). Syndromic forms of -related RP have been associated with short-rib thoracic dysplasia. variants have also been shown to cause spermatogenic dysfunction leading to infertility. However, variants in have not been reported in patients with concurrent RP (including nonsyndromic RP) and infertility.
Methods: A chart review was performed in a 42 year old male with RP and male factor infertility.
Results: Genetic testing confirmed this patient's RP was related to variants in . Chart review and exam confirmed no findings consistent with short-rib thoracic dysplasia, leading to the conclusion that this was a form of nonsyndromic RP as has been previously reported. However, the patient had undergone an infertility workup with findings of spermatogenic dysfunction as found in other males with -related infertility. This has led us to speculate this patient may have a syndromic form of -related RP associated with infertility and abnormal spermatogenesis.
Conclusions: A potential association between -related RP and male factor infertility may exist.
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http://dx.doi.org/10.1080/13816810.2023.2291672 | DOI Listing |
D e h ydro d olichyl d iphosphate s ynthase (DHDDS) is an essential enzyme required for several forms of protein glycosylation in all eukaryotic cells. Surprisingly, three mutant alleles, ( (K42E/K42E), (T206A/K42E), and found in only one patient, (R98W/K42E) have been reported that cause non-syndromic retinitis pigmentosa (RP59), an inherited retinal degeneration (IRD). Because T206A was only observed heterozygously with the K42E allele in RP59 patients, we used CRISPR/CAS9 technology to generate T206A/T206A, and subsequently T206A/K42E alleles in mice to assess the contribution of the T206A allele to the disease phenotype, to model the human disease, and to compare resulting phenotypes to our homozygous K42E mouse model.
View Article and Find Full Text PDFCurr Pharm Des
January 2025
Department of Physiology, Medical School, Selcuk University, Konya, Turkey.
Introduction: Brain ischemia-reperfusion can cause serious and irreversible health problems. Recent studies have suggested that certain flavonoids may help stabilize the correctly folded structure of the visual photoreceptor protein rhodopsin and offset the deleterious effect of retinitis pigmentosa mutations.
Objective: The current study aimed to determine the effect of 3',4'-Dihydroxyflavonol (DiOHF) supplementation for 1 week on lipid peroxidation in the retina tissue following focal brain ischemia-reperfusion in rats.
Ophthalmic Genet
January 2025
Department of Ophthalmology, Copenhagen University Hospital - Rigshospitalet, Glostrup, Denmark.
Introduction: Optic disc drusen (ODD) are believed to have a genetic predisposition, with autosomal dominant inheritance pattern with incomplete penetrance suggested through family pedigree analysis. ODD prevalence is higher in certain genetic disorders, such as pseudoxanthoma elasticum and retinitis pigmentosa. This study aimed to identify candidate genes potentially involved in the development of ODD.
View Article and Find Full Text PDFClin Genet
January 2025
Department of Medical Genetics, Medical Faculty, Aksaray University, Aksaray, Turkiye.
Inherited retinal diseases (IRDs) constitute a heterogeneous group of clinically and genetically diverse conditions, standing as a primary cause of visual impairment among individuals aged 15-45, with an estimated incidence of 1:2000. Our study aimed to comprehensively evaluate the genetic variants underlying IRDs in the Turkish population. This study included 50 unrelated Turkish IRD patients and their families.
View Article and Find Full Text PDFKlin Monbl Augenheilkd
January 2025
Dpt. of Ophthalmology, University Hospital Basel, Basel, Switzerland.
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