Results 181 to 190 of about 2,697 (226)

Thermoregulation in hypergravity-acclimated rats

Journal of Applied Physiology, 1989
To determine the effect of hypergravity acclimation on thermoregulation, core temperature (Tc), tail temperature (Tt), and O2 consumption (VO2) were measured in control rats (raised at 1 G) and in rats acclimated to 2.1 G. When the animals were exposed to a low ambient temperature of 9 degrees C, concurrently with a hypergravic field of 2.1 G, Tc of ...
C B, Monson, S L, Patterson, J M, Horowitz, J, Oyama   +3 more
openaire   +2 more sources

Plant responses to hypergravity: a comprehensive review

Planta, 2022
Hypergravity is an effective novel stimulus to elucidate plant gravitational and mechanobiological behaviour. Here, we review the current understanding of phenotypic, physio-biochemical, and molecular plant responses to simulated hypergravity. Plants readily respond to altered gravity conditions, such as microgravity or hypergravity.
Ravikumar Hosamani, Basavalingayya K. Swamy, Ajwal Dsouza, Malarvizhi Sathasivam   +3 more
openaire   +2 more sources

Effects of simulated hypergravity on biomedical experiments

IEEE Engineering in Medicine and Biology Magazine, 2007
This article presents the conception and development of a centrifuge for hypergravity research use. Experiments were recorded via a digital camera and the images acquired were processed for better visualization of the effects of simulated variation of gravitational force on models of living systems and plant germination. Four different test models were
Thais, Russomano, Mara R, Rizzatti, Rodrigo P, Coelho, Diogo, Scolari, Daniel, De Souza, Paula, Prá-Veleda   +5 more
openaire   +2 more sources

Behaviour of adult hamsters subjected to hypergravity

Journal of Vestibular Research, 1999
We studied vestibular function in 20 adult hamsters (3 months old) subjected to either prolonged hypergravity (n=10) or normal gravity (n=10) for 2 months. Locomotion and swimming of the hypergravity hamsters under light conditions were normal. Equilibrium maintenance was severely disturbed; only 6 of 10 hypergravity hamsters managed to walk on the ...
H N, Sondag, H A, de Jong, W J, Oosterveld   +2 more
openaire   +2 more sources

Hypergravity effects on myoblast proliferation and differentiation

Journal of Bioscience and Bioengineering, 2012
This study aimed at the investigation of behavior of myoblasts in conditions of altered gravity. C2C12 cells underwent stimulations by different hypergravity intensities (2 h at 5 g, 10 g, and 20 g) in the Large Diameter Centrifuge of the European Space Agency (ESA), highlighting positive effects on both proliferation and differentiation.
G. Ciofani, L. Ricotti, Rigosa, Jacopo, A. Menciassi, V. Mattoli, M. Monici   +5 more
openaire   +3 more sources

Hypergravity results in human platelet hyperactivity

Journal of Physiology and Biochemistry, 2009
Thrombotic diseases or fatalities have been reported to occasionally occur under conditions of hypergravity although the mechanism is still unclear. To investigate the effect of hypergravity on platelets that are the primary players in thrombus formation, platelet rich plasma (PRP) or washed platelets were exposed to hypergravity at 8 G for 15 minutes.
S, Li, Q, Shi, Z, Wang, R, Yan, H, Cheng, K, Dai   +5 more
openaire   +2 more sources

Effects of microgravity and hypergravity on platelet functions

Thrombosis and Haemostasis, 2009
SummaryMany serious thrombotic and haemorrhagic diseases or fatalities have been documented in human being exposed to micro-gravity or hypergravity environments, such as crewmen in space, roller coaster riders, and aircrew subjected to high-G training.
Kesheng, Dai, Yuedan, Wang, Rong, Yan, Quanwei, Shi, Zhicheng, Wang, Yanhong, Yuan, Hong, Cheng, Suping, Li, Yubo, Fan, Fengyuan, Zhuang   +9 more
openaire   +2 more sources

Hypergravity, aging and longevity in Drosophila melanogaster

Comparative Biochemistry and Physiology Part A: Physiology, 1993
1. Drosophila melanogaster flies have been used in studies of the effect of hypergravity (HG) on aging and longevity. 2. There is no clear longevity decrease with the gravity level up to 4 g and, even at 7 g, flies still live for roughly 40 days. 3. The HG-related changes in fecundity suggest that flies counteract an increased metabolic demand.
E, Le Bourg, F A, Lints, N, Fresquet, P, Bullens   +3 more
openaire   +2 more sources

Hypergravic fields and parallel controllers for thermoregulation

Journal of Applied Physiology, 1983
To test the proposal that mammals have parallel neurocontrollers for temperature regulation, Long-Evans hooded male rats were exposed to cold while in a 3-G field. When exposed to cold, these rats consumed 35% less oxygen/min at 3 G than they did when exposed to cold at 1 G.
C B, Monson, J M, Horowitz, B A, Horwitz
openaire   +2 more sources

Hippocampal gene expression is modulated by hypergravity

European Journal of Neuroscience, 2004
AbstractWe used the cDNA microarray technique to monitor simultaneously possible changes induced by hypergravity in the expression level of thousands of hippocampal genes. We tested the mRNA level of about 5000 genes in the hippocampus of mice subjected to 1.09 g (1g) or to 1.85 g (2g) for five repeated 1‐h daily rotations in a centrifuge (g = 9.81 m ...
A. Del Signore, S. Mandillo, A. Rizzo, DI MAURO, Ernesto, MELE, Andrea, NEGRI, RODOLFO, OLIVERIO, Alberto, PAGGI, Paola   +7 more
openaire   +2 more sources