Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 3 of 3
Full-Text Articles in Medicine and Health Sciences
Brain Development: Why The Young Sleep Longer, Budhaditya Chowdhury, Orie T. Shafer
Brain Development: Why The Young Sleep Longer, Budhaditya Chowdhury, Orie T. Shafer
Advanced Science Research Center
From absorbing new languages to mastering musical instruments, young children are wired to learn in ways that adults are not (Johnson and Newport, 1989). This ability coincides with periods of intense brain plasticity during which neurons can easily remodel their connections (Hubel and Wiesel, 1970). Many children are also scandalously good sleepers, typically getting several more hours of sleep per night than their parents (Jenni and Carskadon, 2007). As sleep deprivation has negative effects on learning and memory, learning like a child likely requires sleeping like one (Diekelmann and Born, 2010). Yet, how the ability to sleep for longer is …
Manipulation Of Ploidy In Caenorhabditis Elegans, Erlyana K. Clarke, Katherine A. Rivera Gomez, Zaki Mustachi, Mikaela C. Murph, Mara Schvarzstein
Manipulation Of Ploidy In Caenorhabditis Elegans, Erlyana K. Clarke, Katherine A. Rivera Gomez, Zaki Mustachi, Mikaela C. Murph, Mara Schvarzstein
Advanced Science Research Center
Mechanisms that involve whole genome polyploidy play important roles in development and evolution; also, an abnormal generation of tetraploid cells has been associated with both the progression of cancer and the development of drug resistance. Until now, it has not been feasible to easily manipulate the ploidy of a multicellular animal without generating mostly sterile progeny. Presented here is a simple and rapid protocol for generating tetraploid Caenorhabditis elegans animals from any diploid strain. This method allows the user to create a bias in chromosome segregation during meiosis, ultimately increasing ploidy in C. elegans. This strategy relies on the transient …
Efficient Remyelination Requires Dna Methylation, Sarah Moyon, Dan Ma, Jimmy L. Huynh, David J.C. Coutts, Chao Zhao, Patrizia Casaccia, Robin J. M. Franklin
Efficient Remyelination Requires Dna Methylation, Sarah Moyon, Dan Ma, Jimmy L. Huynh, David J.C. Coutts, Chao Zhao, Patrizia Casaccia, Robin J. M. Franklin
Advanced Science Research Center
Oligodendrocyte progenitor cells (OPCs) are the principal source of new myelin in the central nervous system. A better understanding of how they mature into myelin-forming cells is of high relevance for remyelination. It has recently been demonstrated that during developmental myelination, the DNA methyltransferase 1 (DNMT1), but not DNMT3A, is critical for regulating proliferation and differentiation of OPCs into myelinating oligodendrocytes (OLs). However, it remains to be determined whether DNA methylation is also critical for the differentiation of adult OPCs during remyelination. After lysolecithin-induced demyelination in the ventrolateral spinal cord white matter of adult mice of either sex, we detected …