Results 51 to 60 of about 252,220 (287)

Subaortic Stenosis With Elevated Aortic Gradients in a Pregnant Patient

JACC: Case Reports, 2020
Subaortic stenosis is an obstructive lesion that may be exacerbated by pregnancy. We describe the management of a 39-year-old woman presenting at 37 weeks of pregnancy with a murmur who is found to have a subaortic membrane with severely elevated left ventricular outflow gradients. (Level of Difficulty: Beginner.).
Kayle S. Shapero, MD, PhD, Josephine C. Chou, MD   +1 more
openaire   +3 more sources

Elevational species richness gradients in a hyperdiverse insect taxon: a global meta-study on geometrid moths [PDF]

, 2016
AIMS: We aim to document elevational richness patterns of geometrid moths in a globally replicated, multi-gradient setting, and to test general hypotheses on environmental and spatial effects (i.e.
Brehm, G, Zamecnik, J, Toko, Pagi S, Cizek, Oldrich, Zou, Yi, Intachat, Jurie, Colwell, Robert K., Ashton, Louise A, Axmacher, Jan C, Choi, Sei-Woong, Ashton, Louise, Cizek, O, Kadlec, T, Holloway, J, Maunsell, Sarah C., Ashton, LA, Bärtschi, F, Fiedler, K, Nakamura, A, Holloway, Jeremy D., Novotny, Vojtech, Kitching, Roger, Francois, CL, Odell, E, Zamecnik, Jaroslav, Beck, J, Highland, Steven, Sang, W, Fiedler, Konrad, Odell, Erica, Francois, Cristina L, Maunsell, SC, McCain, CM, Colwell, RK, Zou, Y, Highland, S, Toko, Pagi S., Maunsell, Sarah, Sang, Weiguo, Choi, SW, Toko, PS, Kadlec, Tomas, Beck, Jan, Francois, Cristina L., Kitching, Roger L., Bartschi, Florian, Holloway, JD, Axmacher, Jan C., Bärtschi, Florian, Merckx, Thomas, Kitching, Roger L, McCain, Christy M, Kitching, RL, McCain, Christy M., Choi, Sei Woong, Intachat, J, Nakamura, Akihiro, Holloway, Jeremy D, Colwell, Robert K, Brehm, Gunnar, Merckx, T, Axmacher, JC, Maunsell, Sarah C, Ashton, Louise A., Novotny, V   +64 more
core   +1 more source

Spatio-temporal variation in bird assemblages is associated with fluctuations in temperature and precipitation along a tropical elevational gradient. [PDF]

PLoS ONE, 2018
Understanding the spatial and temporal dynamics of species assemblages is a main challenge in ecology. The mechanisms that shape species assemblages and their temporal fluctuations along tropical elevational gradients are particularly poorly understood ...
Vinicio Santillán, Marta Quitián, Boris A Tinoco, Edwin Zárate, Matthias Schleuning, Katrin Böhning-Gaese, Eike Lena Neuschulz   +6 more
doaj   +1 more source

Trait differentiation and adaptation of plants along elevation gradients [PDF]

Journal of Evolutionary Biology, 2018
AbstractStudies of genetic adaptation in plant populations along elevation gradients in mountains have a long history, but there has until now been neither a synthesis of how frequently plant populations exhibit adaptation to elevation nor an evaluation of how consistent underlying trait differences across species are. We reviewed studies of adaptation
Aud H. Halbritter, Simone Fior, Irene Keller, Regula Billeter, Peter J. Edwards, Rolf Holderegger, Sophie Karrenberg, Andrea R. Pluess, Alex Widmer, Jake M. Alexander   +9 more
openaire   +4 more sources

Contrasting Responses of Rhizosphere Bacteria, Fungi and Arbuscular Mycorrhizal Fungi Along an Elevational Gradient in a Temperate Montane Forest of China

Frontiers in Microbiology, 2020
Elevational gradients strongly affect microbial biodiversity in bulk soil through altering plant and soil properties, but the effects on rhizosphere microbial patterns remain unclear, especially at large spatial scales.
Yaoxin Guo, Chengjie Ren, Junjie Yi, Russell Doughty, Fazhu Zhao   +4 more
doaj   +1 more source

Loss of proton‐sensing TDAG8 increases tumor progression in mouse models of colon cancer

Molecular Oncology, EarlyView.
Loss of the pH‐sensing receptor TDAG8 accelerates colorectal cancer progression in mice. Animals lacking TDAG8 expression had increased tumor growth, DNA damage, and recruitment of tumor‐associated immune cells, including macrophages, neutrophils, and monocytes.
Ermanno Malagola, Yasmine Illi, Anna Bircher, Marijn Wilmink, Rachele F. Malagutti, Solenn Ottié, Cordelia Schuler, Pedro A. Ruiz, Cheryl de Vallière, Klaus Seuwen, Gerhard Rogler, Martin Hausmann   +11 more
wiley   +1 more source

Extracellular matrix remodeling and immune reprogramming drive residual tumor progression of liver cancer after incomplete microwave ablation

Molecular Oncology, EarlyView.
Incomplete microwave ablation (iMWA) of liver cancer triggers a biphasic progression in residual tumors. At Day 3, the microenvironment is characterized by acute inflammatory responses and extracellular matrix (ECM) remodeling. By Day 14, a profound shift occurs toward oncogenic signal transduction and immunosuppression, marked by macrophage ...
Yu Liu, Yubei He, Nikolaus Berndt, Michael Mülleder, Kathrin Textoris‐Taube, Jing Guo, Matthias Stechele, Justus Ramtke, Shraga Nahum Goldberg, Lynn Jeanette Savic   +9 more
wiley   +1 more source

SGH: stress or strain gradient hypothesis? Insights from an elevation gradient on the roof of the world [PDF]

Annals of Botany, 2017
The stress gradient hypothesis (SGH), the view that competition prevails in undisturbed and productive environments, and shifts to facilitation in disturbed or stressful environments, has become a central paradigm in ecology. However, an alternative view proposes that the relationship between biotic interactions and environmental severity should be ...
Liancourt, Pierre, Le Bagousse-Pinguet, Yoann, Rixen, Christian, Dolezal, Jiri   +3 more
openaire   +3 more sources

Small mammal diversity and community structure exhibit congruent hump-shaped patterns along a subtropical elevational gradient

Basic and Applied Ecology
Incomplete elevational sampling in studies of biodiversity and community assembly along elevational gradients can result in inconsistent findings and potentially inaccurate conclusions about assembly mechanisms.
Chao Duan, Zhixin Wen, Bingquan Zheng, Yang Chen, Wenling Wang, Jianghong Ran   +5 more
doaj   +1 more source

Physiological Limits along an Elevational Gradient in a Radiation of Montane Ground Beetles.

PLoS ONE, 2016
A central challenge in ecology and biogeography is to determine the extent to which physiological constraints govern the geographic ranges of species along environmental gradients.
Rachel A Slatyer, Sean D Schoville
doaj   +1 more source