Zobrazeno 1 - 10
of 123
pro vyhledávání: '"S. Roy Caplan"'
Thermotaxis of human sperm cells in extraordinarily shallow temperature gradients over a wide range.
Publikováno v:
PLoS ONE, Vol 7, Iss 7, p e41915 (2012)
On the basis of the finding that capacitated (ready to fertilize) rabbit and human spermatozoa swim towards warmer temperatures by directing their movement along a temperature gradient, sperm thermotaxis has been proposed to be one of the processes g
Externí odkaz:
https://doaj.org/article/d0639f2d6f4343e6b12ae67e38681a97
Publikováno v:
PLoS ONE, Vol 7, Iss 3, p e32909 (2012)
Biased motion of motile cells in a concentration gradient of a chemoattractant is frequently studied on the population level. This approach has been particularly employed in human sperm chemotactic assays, where the fraction of responsive cells is lo
Externí odkaz:
https://doaj.org/article/b85cec7c757d47c5ab0decafa7f722fc
Autor:
Gabriel Zarbiv, Hui Li, Amnon Wolf, Michael Eisenbach, Victor Sourjik, S. Roy Caplan, Gary Cecchini
Publikováno v:
J Mol Biol
Recently, the switch-motor complex of bacterial flagella was found to be associated with a number of non-flagellar proteins, which, in spite of not being known as belonging to the chemotaxis system, affect the function of the flagella. The observatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e1d314c3cc84bb116c2367fd6281a3fb
https://doi.org/10.1016/j.jmb.2011.12.027
https://doi.org/10.1016/j.jmb.2011.12.027
Publikováno v:
Journal of Theoretical Biology. 264:984-989
Models of growth hormone (GH) rhythmogenesis which we and others have presented suggest that the GH pulses in the circulation are generated by a GH-releasing hormone (GHRH) oscillator with a 1 h periodicity. Here we examine the possibility that this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8a2203c5850c9899006583b103d5b9b
https://doi.org/10.1016/j.jtbi.2010.02.042
https://doi.org/10.1016/j.jtbi.2010.02.042
Autor:
Silvia Civalero, Anat Frenkel, Laura Cecilia Giojalas, S. Roy Caplan, Roberto A. Rovasio, Michael Eisenbach, Georgina Fabro
Publikováno v:
Biology of Reproduction. 67:1565-1571
Precontact communication between gametes is established by chemotaxis. Sperm chemotaxis toward factor(s) in follicular fluid (FF) has been demonstrated in humans and mice. In humans, the chemotactic responsiveness is restricted to capacitated spermat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f60f48716379f6dab4bc1d9b9ba82f32
https://doi.org/10.1095/biolreprod.102.006395
https://doi.org/10.1095/biolreprod.102.006395
Publikováno v:
American Journal of Physiology-Endocrinology and Metabolism. 275:E1046-E1054
Growth hormone (GH) induces growth in animals and humans and also has important metabolic functions. The GH neuroendocrine axis consists of a signaling cascade from the hypothalamus to the pituitary, the liver, and peripheral tissues, including two m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6db88b49804ece71fb44feead6b7ab6d
https://doi.org/10.1152/ajpendo.1998.275.6.e1046
https://doi.org/10.1152/ajpendo.1998.275.6.e1046
Autor:
Dieter Walz, S. Roy Caplan
Publikováno v:
Bioelectrochemistry and Bioenergetics. 47:19-24
The rotation of bacterial flagella is driven by the difference in electrochemical potential for protons between the periplasmic and the cytoplasmic space. This requires a coupling between a flow of protons across the cell membrane and the rotation of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8727fc7db6c2b76cacae9c7ccfc4adc6
https://doi.org/10.1016/s0302-4598(98)00178-0
https://doi.org/10.1016/s0302-4598(98)00178-0
Publikováno v:
Journal of Molecular Biology. 280:821-828
Switching flagellar rotation from one direction to another is an essential part of bacterial chemotaxis. Fumarate has been shown to possess the capacity to restore to flagella of cytoplasm-free, CheY-containing bacterial envelopes the ability to swit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7d2de17d46bcd73946ea22f053e58e8
https://doi.org/10.1006/jmbi.1998.1922
https://doi.org/10.1006/jmbi.1998.1922
Autor:
Michael Eisenbach, Victor Sourjik, Gabriel Zarbiv, Hui Li, Gary Cecchini, S. Roy Caplan, Amnon Wolf
Publikováno v:
Biophysical Journal. 104(2)
Bacterial flagella are rotated by a motor embedded in the cytoplasmic membrane, the direction of rotation being dictated by a switch at the base of the motor. In the case of bacteria such as E.coli and Salmonella, the motor is driven by the proton-mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::225bcb8739917261fead08d5a6cd261b
Publikováno v:
PLoS ONE, Vol 7, Iss 7, p e41915 (2012)
PLoS ONE
PLoS ONE
On the basis of the finding that capacitated (ready to fertilize) rabbit and human spermatozoa swim towards warmer temperatures by directing their movement along a temperature gradient, sperm thermotaxis has been proposed to be one of the processes g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4de278148f43ecf95b6436f8673d10ae
http://europepmc.org/articles/PMC3405043?pdf=render
http://europepmc.org/articles/PMC3405043?pdf=render