Inhibitory neurons are critical for proper brain function, and their dysfunction is implicated in several disorders, including autism, schizophrenia, and Rett syndrome. These neurons are heterogeneous, and it is unclear which subtypes contribute to specific neurological phenotypes. We deleted Mecp2, the mouse homolog of the gene that causes Rett syndrome, from the two most populous subtypes, pa...

To the Editor: With great interest we have read the short report of Takahashi et al. entitled, Skewed X chromosome inactivation failed to explain the normal phenotype of a carrier female with MECP2 mutation resulting in Rett syndrome’. The report describes a novel missense MECP2 mutation (P.A447T) detected in a girl with Rett syndrome and her asymptomatic carrier mother. Results from X-chromoso...

Rett syndrome is a neurodevelopmental disease due to Mecp2 gene mutations that is associated to complex neurological symptoms, with bioaminergic deficits and life-threatening apneas related to sudden and unexpected death. In male mice, Mecp2-deficiency similarly induces medullary bioaminergic deficits, severe apneas and short life span. Here, we show that long-term oral treatment of Mecp2-defic...

Rett syndrome is a severe neurodevelopmental disorder affecting principally females and characterized by a normal postnatal development followed by stagnation and regression of acquired skills. We report a 4-year-old boy with a Rett syndrome phenotype and his unaffected mother both carrying a 44 bp truncating deletion mutation (c.1158del44 or p.388X) in the MECP2 gene. The presence of a skewed ...

2 9 1 4 jci.org Volume 125 Number 8 August 2015 Introduction Austrian pediatrician Andreas Rett first reported in 1966 on young females exhibiting progressive dementia, motor loss, and stereotyped hand movements following normal development in their first 1 to 1.5 years of life (1). He filmed their unique clinical presentation, attempting to raise awareness and find similar cases of what he ter...

BACKGROUND Rett Syndrome (RS) is a chromosome X-linked genetic neurological disorder characterized by developmental regression, particularly in relation to expressive language and use of the hands. It is also associated with profound mental retardation and almost exclusively affects females. CASE DETAILS A four and a half year old girl reported to our dental OPD for a dental checkup. On compl...

Children with Rett syndrome show abnormal cutaneous sensitivity. The precise nature of sensory abnormalities and underlying molecular mechanisms remain largely unknown. Rats with methyl-CpG binding protein 2 (MeCP2) mutation, characteristic of Rett syndrome, show hypersensitivity to pressure and cold, but hyposensitivity to heat. They also show cutaneous hyperinnervation by nonpeptidergic senso...

Rett syndrome is an X-linked neurological condition affecting almost exclusively girls that is caused by mutations of the MECP2 gene. Recent studies have shown that transgenic delivery of MeCP2 function to Mecp2-deficient male mice can improve their Rett-like behavior. However, as the brain of a Rett girl contains a mosaic of MeCP2 expressing and non-expressing neurons, and the over-expression ...

Rett syndrome is a neurodevelopmental disorder that almost exclusively affects females. The clinical course as well as the electroencephalogram pattern are characteristic and have been correlated to the clinical stages of the disease. Sixty to 70 percent of the patients develop epilepsy. The aim of this retrospective study was to investigate the correlation between clinical stages and electroen...