Recent studies have demonstrated activity-dependent regulation of the AIS, including homeostatic changes in AIS length, membrane excitability, and the localization of voltage-gated Na+ channels. The neurodevelopmental disorder Angelman syndrome (AS) is usually caused by the deletion of small portions of the maternal copy of chromosome 15, which includes the UBE3A gene. A mouse model of AS has been generated and these mice exhibit multiple neurological abnormalities similar to those observed in humans. We examined intrinsic properties of pyramidal neurons in hippocampal area CA1 from AS model mice and observed alterations in resting membrane potential, threshold potential,

and action potential amplitude. The altered intrinsic properties in the AS mice were click here correlated with significant increases in the expression of the alpha 1 subunit of Na/K-ATPase (alpha 1-NaKA), the Na+ channel NaV1.6, and the AIS anchoring protein ankyrin-G, as well as an increase in length of the AIS. These findings are the first evidence for pathology of intrinsic membrane properties and AIS-specific changes in AS, a neurodevelopmental disorder associated with autism.”
“A genetic linkage map of tetraploid wheat was constructed based on a cross NSC105823 between durum wheat [Triticum turgidum ssp. durum (Desf.) MacKey] cultivar Langdon

and wild emmer wheat [T. turgidum ssp. dicoccoides (Korn.) Thell.] accession G18-16. One hundred and fifty-two single-seed descent derived F(6) recombinant inbred lines (RILs) were analyzed with a total of 690 loci, including 197 microsatellite and 493 DArT markers. Linkage analysis defined 14 linkage groups. Most markers were mapped to the B-genome (60%), with an average of 57 markers per chromosome and the remaining 40% mapped to the A-genome, with an average of 39 markers per chromosome. To construct a stabilized (skeleton) map, markers interfering with map stability were removed. The skeleton map consisted

of 307 markers with a total length of 2,317 cM and average distance of 7.5 cM between adjacent markers. The length of individual chromosomes JAK inhibitor ranged between 112 cM for chromosome 4B to 217 cM for chromosome 3B. A fraction (30.1%) of the markers deviated significantly from the expected Mendelian ratios; clusters of loci showing distorted segregation were found on chromosomes 1A, 1BL, 2BS, 3B, and 4B. DArT markers showed high proportion of clustering, which may be indicative of gene-rich regions. Three hundred and fifty-two new DArT markers were mapped for the first time on the current map. This map provides a useful groundwork for further genetic analyses of important quantitative traits, positional cloning, and marker-assisted selection, as well as for genome comparative genomics and genome organization studies in wheat and other cereals.