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Full-Text Articles in Medicine and Health Sciences
Haploinsufficiency Of Rai1 And Its Effect On Bdnf Expression, Sun Kim
Haploinsufficiency Of Rai1 And Its Effect On Bdnf Expression, Sun Kim
Theses and Dissertations
Smith-Magenis Syndrome (SMS) [OMIM, #182290] is a congenital anomaly and mental retardation (MCA/MR) syndrome associated with deletion of chromosome17p11.2 [1]. The clinical phenotype has been well described and includes minor craniofacial anomalies, self-injurious behaviors as well as sleep disturbances, speech delays, and obesity [1,2,3]. The incidence of SMS is estimated to be ~ 1:15,000 - 25,000 births [2,6]. Among SMS patients, ~90% are comprised of 17p11.2 deletions, while ~10% have RAI1 mutations [8]. All 17p11.2 deletions associated with SMS include RAI1 deletion [10]. RAI1 is thought to function as a transcriptional factor although its cellular role is still unclear. First, …
Identification Of Loci Contributing To The Smith-Magenis Syndrome-Like Phenotype And Molecular Evaluation Of The Retinoic Acid Induced 1 Gene, Stephen Williams
Identification Of Loci Contributing To The Smith-Magenis Syndrome-Like Phenotype And Molecular Evaluation Of The Retinoic Acid Induced 1 Gene, Stephen Williams
Theses and Dissertations
Smith-Magenis syndrome (SMS) is a multiple congenital abnormalities intellectual disability syndrome that results from a deletion of chromosome 17p11.2 or mutation of the retinoic acid inducted one gene (RAI1). SMS is characterized by a multitude of phenotypic features including craniofacial defects, short stature, obesity, intellectual disability, self-abusive behavior, sleep disturbance and behavioral abnormalities. Interestingly, although SMS is a clearly defined syndrome with a known molecular change at its foundation, ~40% of all candidate cases sent to the Elsea lab for evaluation do not have a mutation or deletion of RAI1. We hypothesize that at least one other locus must be …
Exploring The Methylation Status Of Rai1 And The Rai1 Consensus Binding Sequence, Eri Kamura
Exploring The Methylation Status Of Rai1 And The Rai1 Consensus Binding Sequence, Eri Kamura
Theses and Dissertations
Smith Magenis Syndrome (SMS) is a multiple congenital anomalies/ mental retardation disorder caused by deletion or mutation of the RAI1 gene on chromosome 17p11.2. The majority of patients with SMS phenotypes have a deletion or mutation of RAI1. However, some patients have been observed with SMS-like phenotypes and yet have no deletions or mutations in the RAI1 gene. One possible explanation could be aberrant methylation of RAI1 since RAI1 is present and yet may be silenced. In order to study this possibility, patient cell lines were treated with 5-Aza-2’-deoxycytidine. RNA was extracted and real-time PCR was used to check the …
Retinoic Acid Induced 1 Gene Analysis In Humans And Zebrafish, Bijal Vyas
Retinoic Acid Induced 1 Gene Analysis In Humans And Zebrafish, Bijal Vyas
Theses and Dissertations
Smith-Magenis syndrome (SMS) is a complex mental retardation syndrome caused by deletion of 17p11.2 region or mutation of the RAI1 gene (retinoic acid induced 1). Individuals with SMS typically exhibit speech and motor delays, mental retardation, characteristic craniofacial and skeletal anomalies, and a distinct neurobehavioral phenotype that includes sleep disturbances, stereotypes, and maladaptive and self-injurious behaviors. RAI1 is thought to be a transcription factor modulating the expression of genes involved in a variety of cellular functions. Previous studies have shown the RAI1 gene being induced by retinoic acid (RA), a derivative of vitamin A. RA plays a significant role in …