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Dystonia: Abnormal Brain Circuits May Prevent Movement Disorder
Specific changes in brain pathways may counteract genetic mutations for the movement disorder dystonia, according to new research in the August 5 issue of The Journal of Neuroscience. Few people who inherit dystonia genes display symptoms - namely sustained muscle contractions and involuntary gestures - and the study provides a possible explanation. This result could lead to new treatments for the estimated 500,000 North Americans diagnosed with dystonia.
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Advanced Preventive Women's Clinic For Women With Menopause Symptoms Who Are At Risk For Heart Disease
Women who are at risk for heart disease and who are also experiencing menopause symptoms now have an added re a highly specialized clinic in the Division of Cardiology at the Cedars-Sinai Heart Institute. The Advanced Preventive Women"s Clinic at the Women"s Heart Center recently opened and is offering comprehensive cardiac risk assessments designed specifically for women who are in menopause. The clinic also offers menopausal patients state-of-the-art screenings, as well as personalized medicine therapies and counseling, including high-risk hormone counseling.
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AARP Pushes Lawmakers To Improve Long-Term Care - Legislation Would Allow More Americans To Get Services At Home
As lawmakers return to Washington to tackle
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ChIP-Seq, Drosophila Targeted Mutagenesis Featured In Cold Spring Harbor Protocols

High-throughput whole-genome analysis is becoming a standard laboratory approach for investigating cellular processes. Next-generation sequencing is replacing microarrays as the technique of choice for genome-scale analysis, because it offers advantages in both sensitivity and scale. The June issue of Cold Spring Harbor Protocols features "Native Chromatin Preparation and Illumina/Solexa Library Construction" from Keji Zhao and colleagues at the National Heart, Lung and Blood Institute. The article describes sample preparation for sequencing of chromatin-immunoprecipitated DNA (ChIP-Seq) to analyze histone modification patterns using native chromatin and the Solexa/Illumina Genome Analyzer. Step-by-step instructions are given for purification of human CD4+ T cells from lymphocytes and chromatin fragmentation using micrococcal nuclease (MNase) digestion, followed by chromatin immunoprecipitation (ChIP) and construction of a library for sequencing. The article is freely available on the website for Cold Spring Harbor Protocols (http://cshprotocols.cshlp.org/cgi/content/full/2009/6/pdb.prot5237). Mutational analysis has long been a valuable tool for deciphering gene function. However, systematic repeated targeting of a single locus is difficult and is not a routine approach in multicellular organisms. Yikang Rong and colleagues at the National Cancer Institute have developed the Site-specific Integrase mediated Repeated Targeting (SIRT) method to facilitate targeted mutagenesis in Drosophila melanogaster. SIRT targets a landing site for the phage phiC31 integrase and allows the generation of several genetic variants at a locus of interest without having to perform multiple experiments. SIRT requires the construction of a series of plasmid vectors with varying arrangements of DNA elements. By taking advantage of bacterial recombineering approaches, SIRT bypasses the shortcomings of traditional cloning techniques that rely on the availability of convenient restriction enzyme cut sites. This method, "SIRT Combines Homologous Recombination, Site-Specific Integration, and Bacterial Recombineering for Targeted Mutagenesis in Drosophila," is freely accessible on the website for Cold Spring Harbor Protocols (http://cshprotocols.cshlp.org/cgi/content/full/2009/6/pdb.prot5236). David Crotty Cold Spring Harbor Laboratory


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