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Colin M. Callahan
Researcher at University of Montana
Publications - 27
Citations - 1277
Colin M. Callahan is an academic researcher from University of Montana. The author has contributed to research in topics: Gene & DNA methylation. The author has an hindex of 10, co-authored 26 publications receiving 820 citations. Previous affiliations of Colin M. Callahan include Johns Hopkins University & Utah State University.
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Journal ArticleDOI
The NASA Twins Study: A multidimensional analysis of a year-long human spaceflight.
Francine E. Garrett-Bakelman,Francine E. Garrett-Bakelman,Manjula Darshi,Stefan J. Green,Ruben C. Gur,Ling Lin,Brandon R. Macias,Miles J. McKenna,Cem Meydan,Tejaswini Mishra,Jad Nasrini,Brian D. Piening,Brian D. Piening,Lindsay F. Rizzardi,Kumar Sharma,Jamila H. Siamwala,Jamila H. Siamwala,Lynn Taylor,Martha Hotz Vitaterna,Maryam Afkarian,Ebrahim Afshinnekoo,Sara Ahadi,Aditya Ambati,Maneesh Arya,Daniela Bezdan,Colin M. Callahan,Songjie Chen,Augustine M.K. Choi,George E. Chlipala,Kévin Contrepois,Marisa Covington,Brian Crucian,Immaculata De Vivo,David F. Dinges,Douglas J. Ebert,Jason I. Feinberg,Jorge Gandara,Kerry George,John Goutsias,George Grills,Alan R. Hargens,Martina Heer,Martina Heer,Ryan P. Hillary,Andrew N. Hoofnagle,Vivian Hook,Garrett Jenkinson,Garrett Jenkinson,Peng Jiang,Ali Keshavarzian,Steven S. Laurie,Brittany Lee-McMullen,Sarah B. Lumpkins,Matthew MacKay,Mark Maienschein-Cline,Ari Melnick,Tyler M. Moore,Kiichi Nakahira,Hemal H. Patel,Robert Pietrzyk,Varsha Rao,Rintaro Saito,Rintaro Saito,Denis Salins,Jan M. Schilling,Dorothy D. Sears,Caroline Sheridan,Michael B. Stenger,Rakel Tryggvadottir,Alexander E. Urban,Tomas Vaisar,Benjamin Van Espen,Jing Zhang,Michael G. Ziegler,Sara R. Zwart,John B. Charles,Craig E. Kundrot,Graham B. I. Scott,Susan M. Bailey,Mathias Basner,Andrew P. Feinberg,Stuart M. C. Lee,Christopher E. Mason,Emmanuel Mignot,Brinda K. Rana,Scott M. Smith,Michael Snyder,Fred W. Turek,Fred W. Turek +88 more
TL;DR: Given that the majority of the biological and human health variables remained stable, or returned to baseline, after a 340-day space mission, these data suggest that human health can be mostly sustained over this duration of spaceflight.
Journal ArticleDOI
Adaptive introgression underlies polymorphic seasonal camouflage in snowshoe hares
Matthew R. Jones,L. Scott Mills,L. Scott Mills,Paulo C. Alves,Paulo C. Alves,Colin M. Callahan,Joel M. Alves,Joel M. Alves,Diana J. R. Lafferty,Diana J. R. Lafferty,Diana J. R. Lafferty,Francis M. Jiggins,Jeffrey D. Jensen,Jeffrey D. Jensen,José Melo-Ferreira,Jeffrey M. Good +15 more
TL;DR: It is shown that cis-regulatory variation controlling seasonal expression of the Agouti gene underlies this adaptive winter camouflage polymorphism, and shows that introgression of genetic variants that underlie key ecological traits can seed past and ongoing adaptation to rapidly changing environments.
Journal ArticleDOI
Neuronal brain-region-specific DNA methylation and chromatin accessibility are associated with neuropsychiatric trait heritability.
Lindsay F. Rizzardi,Peter Hickey,Varenka A. Rodriguez DiBlasi,Rakel Tryggvadottir,Colin M. Callahan,Adrian Idrizi,Kasper D. Hansen,Kasper D. Hansen,Andrew P. Feinberg +8 more
TL;DR: An extensive profile of DNA methylation in neuronal and non-neuronal cells across four brain regions is reported, showing that differential epigenetic marks are enriched for DNA variants associated with neuropsychiatric traits.
Journal ArticleDOI
Widespread triploidy in Western North American aspen (Populus tremuloides).
Karen E. Mock,Colin M. Callahan,M. Nurul Islam-Faridi,John D. Shaw,Hardeep S. Rai,Stewart C. Sanderson,Carol A. Rowe,Ronald J. Ryel,Michael D. Madritch,Richard S. Gardner,Paul G. Wolf +10 more
TL;DR: It is demonstrated that triploidy is highest in unglaciated, drought-prone regions of North America, where the largest clone sizes have been reported for this species, and cytotype may be a significant and previously overlooked factor in recent patterns of high aspen mortality in the southwestern portion of the species range.
Journal ArticleDOI
Continental-scale assessment of genetic diversity and population structure in quaking aspen (Populus tremuloides)
Colin M. Callahan,Carol A. Rowe,Ronald J. Ryel,John D. Shaw,Michael D. Madritch,Karen E. Mock +5 more
TL;DR: In this article, the authors examined geographical patterns of genetic diversity and structuring using 8 nuclear microsatellite loci in 794 individuals from 30 sampling sites and identified two major genetic clusters across the range: a south-western cluster and a northern cluster.