Hypomyelination and congenital cataract (HCC) is a condition, which is caused by mutations in the gene and is characterized by congenital cataract, progressive neurologic impairment, and myelin deficiency in both the central and peripheral nervous system. We present the findings of three siblings who applied to us with the same clinical features. These patients were referred to our clinic due to the presence of bilateral congenital cataract and progressive neurological impairment with peripheral neuropathy. Brain magnetic resonance imaging (MRI) showed diffuse hypomyelination, whereas neurophysiological studies showed sensorimotor peripheral polyneuropathy. Cases with hypomyelination in MRI represent the largest group of undiagnosed diseases among patients with leukoencephalopathies. To diagnose cases with peripheral neuropathy, their clinical and neuroradiological findings must be identified. These findings can guide clinicians to appropriate molecular investigations.
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http://dx.doi.org/10.4103/jpn.JPN_161_18 | DOI Listing |
Ophthalmology
December 2024
Department of Ophthalmology, Stanford University, Palo Alto, CA.
Objective: Achieving near normal vision following unilateral congenital cataract surgery is possible but requires early surgery, optical correction and consistent patching. Patching is often challenging for children and their caregivers. The goal of these analyses is to examine the association between reported consistency in patching during the first year after surgery and visual acuity.
View Article and Find Full Text PDFJ Biol Chem
December 2024
The Laboratory of Ophthalmology and Vision Science, Department of Ophthalmology, The Joint National Laboratory of Antibody Drug Engineering, Henan Province Engineering Research Center of Fundus Disease and Ocular Trauma Prevention and Treatment, The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, China; Henan International Joint Research Laboratory for Ocular Immunology and Retinal Injury Repair, Zhengzhou, China; Kaifeng Key Lab for Cataracts and Myopia, Kaifeng Central Hospital, Kaifeng, China; Eye Institute, Henan Academy of Innovations in Medical Science, Zhengzhou, China. Electronic address:
Genetic mutations in retinol dehydrogenase 5 (RDH5), a rate-limiting enzyme of the visual cycle, is associated with nyctalopia, AMD and stationary congenital fundus albipunctatus (FA). A majority of these mutations impair RDH5 protein expression and intracellular localization. However, the regulatory mechanisms underlying RDH5 metabolism remain unclear.
View Article and Find Full Text PDFFront Genet
December 2024
Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy.
Myotonia congenita, both in a dominant (Thomsen disease) and recessive form (Becker disease), is caused by molecular defects in that encodes the major skeletal muscle chloride channel, ClC-1. This channel is important for the normal repolarization of muscle action potentials and consequent relaxation of the muscle, and its dysfunction leads to impaired muscle relaxation after voluntary or evoked contraction and muscle stiffness. More than 300 pathogenic variants have been found in association with congenital myotonia, inherited as recessive or dominant traits (with complete or incomplete penetrance).
View Article and Find Full Text PDFInt J Ophthalmol
December 2024
Eye Hospital and School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325003, Zhejiang Province, China.
Aim: To establish an animal model of form deprivation amblyopia based on a simulated cataract intraocular lens (IOLs).
Methods: Poly(dimethyl siloxane)-SiO thin films (PSF) with different degrees of opacity as IOL materials were prepared. The light transmission of the PSF-IOL was measured, and its biosafety was determined by cell counting kit (CCK)-8 assay using the HLEC-B3 cell line and ARPE-19 cell line.
J Med Case Rep
December 2024
Shaanxi Eye Hospital, Xi'an People's Hospital (Xi'an Fourth Hospital), Affiliated People's Hospital, Northwest University, Xi'an, 710004, Shaanxi, China.
Background: Oculocutaneous albinism is a rare autosomal recessive disorder caused by congenital melanin deficiency, resulting in hypopigmentation of the eyes, hair, and skin. This study included a Chinese family with an oculocutaneous albinism pedigree, in which the proband presented with oculocutaneous albinismcombined with secondary angle closure, which has been rarely reported in previous literature. This article primarily focused on the clinical and genetic examination results of this patient and provided recommendations for ophthalmologist to treat patients with oculocutaneous albinism in clinical practice.
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