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Isaacson J.,University of Missouri - Kansas City | Isaacson J.,Johnson County Community College | Brotto M.,University of Missouri - Kansas City
Clinical Reviews in Bone and Mineral Metabolism | Year: 2014

The complexity of cell interactions with their microenvironment and their ability to communicate at the autocrine, paracrine, and endocrine levels has gradually but significantly evolved in the last three decades. The musculoskeletal system has been historically recognized to be governed by a relationship of proximity and function, chiefly dictated by mechanical forces and the work of gravity itself. In this review article, we first provide a historical overview of the biomechanical theory of bone-muscle interactions. Next, we expand to detail the significant evolution in our understanding of the function of bones and muscles as secretory organs. Then, we review and discuss new evidence in support of a biochemical interaction between these two tissues. We then propose that these two models of interaction are complementary and intertwined providing for a new frontier for the investigation of how bone-muscle cross talk could be fully explored for the targeting of new therapies for musculoskeletal diseases, particularly the twin conditions of aging, osteoporosis and sarcopenia. In the last section, we explore the bone-muscle cross talk in the context of their interactions with other tissues and the global impact of these multi-tissue interactions on chronic diseases. © Springer Science+Business Media 2013. Source

Prothero D.R.,Vertebrate Paleontology | Campbell Jr. K.E.,Vertebrate Zoology | Beatty B.L.,New York Institute of Technology | Beatty B.L.,Smithsonian Institution | Frailey C.D.,Johnson County Community College
Journal of Paleontology | Year: 2014

A new dromomerycine palaeomerycid artiodactyl, Surameryx acrensis new genus new species, from upper Miocene deposits of the Amazon Basin documents the first and only known occurrence of this Northern Hemisphere group in South America. Osteological characters place the new taxon among the earliest known dromomerycine artiodactyls, most similar to Barbouromeryx trigonocorneus, which lived in North America during the early to middle Miocene, 20-16 Ma. Although it has long been assumed that the Great American Biotic Interchange (GABI) began with the closure of the Isthmus of Panama in the late Pliocene, or ca. 3.0-2.5 Ma, the presence of this North American immigrant in Amazonia is further evidence that terrestrial connections between North America and South America through Panama existed as early as the early late Miocene, or ca. 9.5 Ma. This early interchange date was previously indicated by approximately coeval specimens of proboscideans, peccaries, and tapirs in South America and ground sloths in North America. Although palaeomerycids apparently never flourished in South America, proboscideans thrived there until the end of the Pleistocene, and peccaries and tapirs diversified and still live there today. © 2014, The Paleontological Society. Source

Rhodes H.A.,Johnson County Community College
The Journal of practical nursing | Year: 2011

This article discusses the lack of pediatric clinical experiences for practical nursing programs in Kansas (specifically in the Kansas City, Kansas Metropolitan area). The need for pediatric experience along with how pediatric simulation experience can enhance these programs is discussed. A quantitative research study evaluating at how implementation of a simulation activity into the practical nurse core curriculum impacts knowledge, student confidence, and satisfaction is explored. Source

Frailey C.D.,Johnson County Community College | Frailey C.D.,University of Kansas | Campbell Jr. K.E.,Vertebrate Zoology
Journal of Paleontology | Year: 2012

Two new, extinct taxa of peccaries from upper Miocene deposits of the western Amazon Basin provide the first data documenting the presence of these North American mammals in South America in the Miocene. One, Sylvochoerus woodburnei n. gen. n. sp., is allied morphologically to Tayassu pecari, whereas the second, Waldochoerus bassleri n. gen. n. sp., is more similar to Pecari tajacu. Both new taxa reflect an intermediate position between middle Miocene peccaries and modern Tayassu and Pecari. The specimens reported here were unstudied, but when collected they were referred to living species of Tayassu and Pecari based on their general similarity to species of those two living genera, and they were dated to the Pleistocene, presumably based on a longstanding model of the Great American Faunal Interchange. The presence of peccaries in South America at approximately the same time that South American ground sloths began appearing in upper Miocene deposits of North America, and soon after the appearance of gomphotheres in South America, indicates that dispersal between the Americas was earlier and involved more taxa than previously interpreted. Molecular divergence data are consistent, in part, with a late Miocene dispersal of peccaries to South America. Copyright © 2012, The Paleontological Society. Source

Davis M.P.,University of Kansas | Holcroft N.I.,Johnson County Community College | Wiley E.O.,University of Kansas | Sparks J.S.,American Museum of Natural History | Leo Smith W.,University of Kansas
Marine Biology | Year: 2014

The vast darkness of the deep sea is an environment with few obvious genetic isolating barriers, and little is known regarding the macroevolutionary processes that have shaped present-day biodiversity in this habitat. Bioluminescence, the production and emission of light from a living organism through a chemical reaction, is thought to occur in approximately 80 % of the eukaryotic life that inhabits the deep sea (water depth greater than 200 m). In this study, we show, for the first time, that deep-sea fishes that possess species-specific bioluminescent structures (e.g., lanternfishes, dragonfishes) are diversifying into new species at a more rapid rate than deep-sea fishes that utilize bioluminescence in ways that would not promote isolation of populations (e.g., camouflage, predation). This work adds to our understanding of how life thrives and evolution shaped present-day biodiversity in the deep sea, the largest and arguably least explored habitat on earth. © 2014 The Author(s). Source

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