Results 21 to 30 of about 4,869 (218)

Hypergravity affects cell traction forces of fibroblasts [PDF]

Biophysical Journal, 2020
ABSTRACTCells sense and react on changes of the mechanical properties of their environment, and likewise respond to external mechanical stress applied to them. Whether the gravitational field, as overall body force, modulates cellular behavior is however unclear.
Eckert, J., Loon, L. van, Eng, L.M., Schmidt, T.   +3 more
openaire   +6 more sources

Gravity-Tolerant In-Flight 3D Bioprinting Enabled by Stereolithography for Space Tissue Engineering. [PDF]

Adv Sci (Weinh)
A flight‐compliant, closed stereolithographic 3D bioprinting system enables robust fabrication of acellular and cell‐laden hydrogel constructs under varying gravitational conditions, including microgravity and hypergravity phases. Printed structures retain dimensional fidelity and high‐resolution features, while cell viability remains high ...
Lemke B, Kollert MR, Lam T, Thiele T, Göbel N, Köhn LR, Korus G, Kloke L, Duda GN.   +8 more
europepmc   +2 more sources

The effect of different gravity fields on mass transfer in the rat bone lacunar-canalicular system

Medicine in Novel Technology and Devices, 2023
The bone lacunar-canalicular system (LCS) is an important microscopic infrastructure for signaling and solute transport in bone tissue, which guarantees normal physiological processes of the tissue, but the mass transfer laws in the LCS under different ...
Hao Wang, Jiaming Wang, Kangning Li, Lilan Gao, Aiguo Wang, Shuping Wei, Linwei Lyu, Chunqiu Zhang   +7 more
doaj   +1 more source

An atomic force microscope operating at hypergravity for in situ measurement of cellular mechano-response [PDF]

, 2009
We present a novel atomic force microscope (AFM) system, operational in liquid at variable gravity, dedicated to image cell shape changes of cells in vitro under hypergravity conditions. The hypergravity AFM is realized by mounting a stand-alone AFM into
Hulst, N.F. van, Jong, H.H.A. de, Korterik, J.P., Laar, M.C. van, Loon, J.J.W.A. van, Segerink, F.B., Wubbels, R.J.   +6 more
core   +2 more sources

Hypergravity down-regulates c-fos gene expression via ROCK/Rho-GTP and the PI3K signaling pathway in murine ATDC5 chondroprogenitor cells. [PDF]

PLoS ONE, 2017
Chondrocytes are known to be physiologically loaded with diverse physical factors such as compressive stress, shear stress and hydrostatic pressure. Although the effects of those mechanical stimuli onto various cell models have been widely studied, those
Jeonghyun Kim, Kevin Montagne, Hidetoshi Nemoto, Takashi Ushida, Katsuko S Furukawa   +4 more
doaj   +1 more source

An Arabidopsis PTH2 Gene Is Responsible for Gravity Resistance Supporting Plant Growth under Different Gravity Conditions

Life, 2022
Terrestrial plants respond to and resist gravitational force. The response is termed “gravity resistance”, and centrifugal hypergravity conditions are efficient for investigating its nature and mechanism.
Takayuki Hattori, Kouichi Soga, Kazuyuki Wakabayashi, Takayuki Hoson   +3 more
doaj   +1 more source

Extension of the Poincar\'e group with half-integer spin generators: hypergravity and beyond [PDF]

, 2015
An extension of the Poincar\'e group with half-integer spin generators is explicitly constructed. We start discussing the case of three spacetime dimensions, and as an application, it is shown that hypergravity can be formulated so as to incorporate this
Fuentealba, Oscar, Matulich, Javier, Troncoso, Ricardo   +2 more
core   +2 more sources

Is sleep affected after microgravity and hypergravity exposure? A pilot study. [PDF]

J Sleep Res
Summary Sleep is known to be affected in space travel and in residents of the international space station. But little is known about the direct effects of gravity changes on sleep, if other factors, such as sleep conditions, are kept constant. Here, as a first exploration, we investigated sleep before and after exposure to short bouts of microgravity ...
Le Roy B, Jouvencel A, Friedl-Werner A, Renel L, Cherchali Y, Osseiran R, Sanz-Arigita E, Cazalets JR, Guillaud E, Altena E.   +9 more
europepmc   +2 more sources

Hypogravity reduces trunk admittance and lumbar muscle activation in response to external perturbations [PDF]

, 2020
Reduced paraspinal muscle size and flattening of spinal curvatures have been documented after spaceflight. Assessment of trunk adaptations to hypogravity can contribute to develop specific countermeasures.
Caplan, Nick, De Martino, Enrico, Debuse, Dorothee, Green, David A., Hides, Julie, Hodges, Paul W., Lindsay, Kirsty, Mccarty, Kris, Riazati, Sherveen, Salomoni, Sauro Emerick, Scott, Jonathan, van Dieën, Jaap H., Weber, Tobias, Winnard, Andrew   +13 more
core   +4 more sources

Application of hypergravity in Eucalyptus and Corymbia seeds

Ciência Rural, 2018
: The aim of this study was to evaluate the growth responses of various Eucalyptus and Corymbia species subjected to different intensities of simulated hypergravity relative to the control. A centrifuge was used to simulate hypergravity. It was developed
Andrei Caíque Pires Nunes, Glêison Augusto dos Santos, Marlise Araújo dos Santos, Thais Russomano, Osmarino Pires dos Santos, Brígida Maria dos Reis Teixeira Valente, Marcos Deon Vilela de Resende   +6 more
doaj   +1 more source