Articles written in Journal of Genetics
Volume 81 Issue 2 August 2002 pp 59-63
Screening for homozygosity by descent in families with autosomal recessive retinitis pigmentosa
Kota Lalitha Subhadra Jalali Tejas Kadakia Chitra Kannabiran
Retinitis pigmentosa (RP) is a genetically heterogeneous disease and an important cause of blindness in the state of Andhra Pradesh in India. In an attempt to identify the disease locus in families with the recessive form of the disease, we used the approach of screening for homozygosity by descent in offspring of consanguineous and nonconsanguineous families with RP. Microsatellite markers closely flanking 21 known candidate genes for RP were genotyped in parents and affected offspring to determine whether there was homozygosity at these loci that was shared by affected individuals of a family. This screening approach may be a rapid preliminary method to test known loci for possible cosegregation with disease.
Volume 88 Issue 4 December 2009 pp 393-394
Volume 88 Issue 4 December 2009 pp 487-494 Review Article
Genetics of corneal endothelial dystrophies
The corneal endothelium maintains the level of hydration in the cornea. Dysfunction of the endothelium results in excess accumulation of water in the corneal stroma, leading to swelling of the stroma and loss of transparency. There are four different corneal endothelial dystrophies that are hereditary, progressive, non-inflammatory disorders involving dysfunction of the corneal endothelium. Each of the endothelial dystrophies is genetically heterogeneous with different modes of transmission and/or different genes involved in each subtype. Genes responsible for disease have been identified for only a subset of corneal endothelial dystrophies. Knowledge of genes involved and their function in the corneal endothelium can aid understanding the pathogenesis of the disorder as well as reveal pathways that are important for normal functioning of the endothelium.
Volume 88 Issue 4 December 2009 pp 517-527 Research Article
A comprehensive, sensitive and economical approach for the detection of mutations in the
Vidya Latha Parsam Chitra Kannabiran Santosh Honavar Geeta K. Vemuganti Mohammad Javed Ali
Retinoblastoma (Rb) is the most common primary intraocular malignancy in children. It is brought about by the mutational inactivation of both alleles of
Volume 97 Issue 1 March 2018 pp 341-352 REVIEW ARTICLE
Therapeutic avenues for hereditary forms of retinal blindness
CHITRA KANNABIRAN INDUMATHI MARIAPPAN
Hereditary retinal diseases, known as retinal degenerations or dystrophies, are a large group of inherited eye disorders resulting in irreversible visual loss and blindness. They develop due to mutations in one or more genes that lead to the death of the retinal photoreceptor cells. Till date, mutations in over 200 genes are known to be associated with all different forms of retinal disorders. The enormous genetic heterogeneity of this group of diseases has posedmany challenges in understanding the mechanisms of disease and in developing suitable therapies. Therapeutic avenues that are being investigated for these disorders include genetherapy to replace the defective gene, treatment with neurotrophic factors to stimulate the growth of photoreceptors, cell replacement therapy, and prosthetic devices that can capture light and transmit electrical signals through retinal neurons to the brain. Several of these are in process of human trials in patients, and have shown safety and efficacy of the treatment. A combination of approaches that involve both gene replacement and cell replacement may be required for optimum benefit.
Volume 102, 2023
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