The Experts below are selected from a list of 300 Experts worldwide ranked by ideXlab platform
Sabra L Katzwise - One of the best experts on this subject based on the ideXlab platform.
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sexual Fluidity and related attitudes and beliefs among young adults with a same gender orientation
Archives of Sexual Behavior, 2015Co-Authors: Sabra L Katzwise, Janet Shibley HydeAbstract:Little research has examined whether experiencing sexual Fluidity—changes over time in attractions and sexual orientation identity—is related to specific cognitions. This study explored attitudes and beliefs among sexually fluid and non-sexually fluid individuals and developed two new measures of sexuality beliefs based on Diamond’s sexual Fluidity research and Dweck’s psychological theory of intelligence beliefs. Participants were 188 female and male young adults in the United States with a same-gender orientation, ages 18–26 years. Participants completed an online questionnaire which assessed sexual Fluidity in attractions and sexual orientation identity, attitudes toward bisexuality, sexuality beliefs, and demographics. Sexual Fluidity in attractions was reported by 63 % of females and 50 % of males, with 48 % of those females and 34 % of those males reporting Fluidity in sexual orientation identity. No significant gender differences in frequency of sexual Fluidity were observed. Sexually fluid females had more positive attitudes toward bisexuality than non-sexually fluid females; however, no significant difference was observed for males. Females were more likely than males to endorse sexual Fluidity beliefs and to believe that sexuality is changeable; and sexually fluid persons were more likely than non-sexually fluid persons to hold those two beliefs. Among males, non-sexually fluid individuals were more likely than sexually fluid individuals to believe that sexuality is something an individual is born with. Females were more likely than males to endorse the belief that sexuality is influenced by the environment. Findings from this research link sexual Fluidity with specific cognitions.
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sexual Fluidity in young adult women and men associations with sexual orientation and sexual identity development
Psychology and Sexuality, 2015Co-Authors: Sabra L KatzwiseAbstract:This research investigated sexual Fluidity in attractions and sexual identity and associations with sexual orientation dimensions and sexual identity development in 199 (124 female, 75 male) US sexual minority young adults, ages 18–26 years. Participants completed an online questionnaire measuring sexual Fluidity in attractions and sexual identity, sexual orientation dimensions (sexual identity, attractions, sexual behaviour) and sexual identity development. Sexual Fluidity in attractions was reported by 64% of women and 52% of men, with 49% of those women and 36% of those men reporting sexual Fluidity in sexual identity based on experiencing changes in attractions, with no significant gender differences. Sexually fluid women used a range of sexual identities, whereas most sexually fluid men identified as completely homosexual/gay. Sexually fluid people were more likely than non-sexually-fluid people to have engaged in past sexual behaviours with both genders. Sexual Fluidity in attractions was not relate...
Alan S. Verkman - One of the best experts on this subject based on the ideXlab platform.
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Relationship between vasopressin-sensitive water transport and plasma membrane Fluidity in kidney collecting tubule.
The American journal of physiology, 1991Co-Authors: Kiyohide Fushimi, Alan S. VerkmanAbstract:The role of plasma membrane Fluidity in the regulation of kidney tubule water permeability has been uncertain. We have used new methods to image the fluorescence anisotropy of Fluidity-sensitive fluorophores (Fushimi, Dix, and Verkman. Biophys. J. 57: 241-254, 1990) to quantitate membrane Fluidity in cells of the vasopressin-sensitive cortical collecting tubule (CCT) and water-impermeable cortical thick ascending limb (CTAL). Isolated tubule segments from rabbit kidney were perfused in vitro, and apical or basolateral plasma membranes were stained with trimethylammonium diphenylhexatriene (TMA-DPH). TMA-DPH anisotropy (r) was imaged quantitatively by an epifluorescence microscope equipped with rotatable polarizers; TMA-DPH nanosecond lifetime (tau) was measured by flash-lamp excitation and gated photomultiplier detection. In CCT, apical membrane r (0.254 +/- 0.003) was similar to basolateral r (0.252 +/- 0.005). Serosal vasopressin at a dose that increased water permeability greater than 10-fold (250 microU/ml) did not affect apical membrane r (delta r = 0.002 +/- 0.003; 7 tubules). A 0.002 change in r was less than that produced by a 2 degrees C temperature variation. In CTAL, apical membrane r was 0.249 +/- 0.002, similar to r from basolateral membrane of proximal tubule (0.24), but much less than that of proximal tubule apical membrane (0.29). These results establish methodology to quantitate Fluidity in intact kidney tubule segments and provide the first measurements of plasma membrane Fluidity in CTAL and CCT. Our results suggest that regulation of bulk membrane Fluidity in CCT apical membrane is not a component of the hydrosmotic action of vasopressin and that low apical membrane Fluidity is not responsible for the low water and NH3 permeabilities in CTAL.
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relationship between vasopressin sensitive water transport and plasma membrane Fluidity in kidney collecting tubule
American Journal of Physiology-cell Physiology, 1991Co-Authors: Kiyohide Fushimi, Alan S. VerkmanAbstract:The role of plasma membrane Fluidity in the regulation of kidney tubule water permeability has been uncertain. We have used new methods to image the fluorescence anisotropy of Fluidity-sensitive fl...
Kiyohide Fushimi - One of the best experts on this subject based on the ideXlab platform.
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Relationship between vasopressin-sensitive water transport and plasma membrane Fluidity in kidney collecting tubule.
The American journal of physiology, 1991Co-Authors: Kiyohide Fushimi, Alan S. VerkmanAbstract:The role of plasma membrane Fluidity in the regulation of kidney tubule water permeability has been uncertain. We have used new methods to image the fluorescence anisotropy of Fluidity-sensitive fluorophores (Fushimi, Dix, and Verkman. Biophys. J. 57: 241-254, 1990) to quantitate membrane Fluidity in cells of the vasopressin-sensitive cortical collecting tubule (CCT) and water-impermeable cortical thick ascending limb (CTAL). Isolated tubule segments from rabbit kidney were perfused in vitro, and apical or basolateral plasma membranes were stained with trimethylammonium diphenylhexatriene (TMA-DPH). TMA-DPH anisotropy (r) was imaged quantitatively by an epifluorescence microscope equipped with rotatable polarizers; TMA-DPH nanosecond lifetime (tau) was measured by flash-lamp excitation and gated photomultiplier detection. In CCT, apical membrane r (0.254 +/- 0.003) was similar to basolateral r (0.252 +/- 0.005). Serosal vasopressin at a dose that increased water permeability greater than 10-fold (250 microU/ml) did not affect apical membrane r (delta r = 0.002 +/- 0.003; 7 tubules). A 0.002 change in r was less than that produced by a 2 degrees C temperature variation. In CTAL, apical membrane r was 0.249 +/- 0.002, similar to r from basolateral membrane of proximal tubule (0.24), but much less than that of proximal tubule apical membrane (0.29). These results establish methodology to quantitate Fluidity in intact kidney tubule segments and provide the first measurements of plasma membrane Fluidity in CTAL and CCT. Our results suggest that regulation of bulk membrane Fluidity in CCT apical membrane is not a component of the hydrosmotic action of vasopressin and that low apical membrane Fluidity is not responsible for the low water and NH3 permeabilities in CTAL.
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relationship between vasopressin sensitive water transport and plasma membrane Fluidity in kidney collecting tubule
American Journal of Physiology-cell Physiology, 1991Co-Authors: Kiyohide Fushimi, Alan S. VerkmanAbstract:The role of plasma membrane Fluidity in the regulation of kidney tubule water permeability has been uncertain. We have used new methods to image the fluorescence anisotropy of Fluidity-sensitive fl...
Janet Shibley Hyde - One of the best experts on this subject based on the ideXlab platform.
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sexual Fluidity and related attitudes and beliefs among young adults with a same gender orientation
Archives of Sexual Behavior, 2015Co-Authors: Sabra L Katzwise, Janet Shibley HydeAbstract:Little research has examined whether experiencing sexual Fluidity—changes over time in attractions and sexual orientation identity—is related to specific cognitions. This study explored attitudes and beliefs among sexually fluid and non-sexually fluid individuals and developed two new measures of sexuality beliefs based on Diamond’s sexual Fluidity research and Dweck’s psychological theory of intelligence beliefs. Participants were 188 female and male young adults in the United States with a same-gender orientation, ages 18–26 years. Participants completed an online questionnaire which assessed sexual Fluidity in attractions and sexual orientation identity, attitudes toward bisexuality, sexuality beliefs, and demographics. Sexual Fluidity in attractions was reported by 63 % of females and 50 % of males, with 48 % of those females and 34 % of those males reporting Fluidity in sexual orientation identity. No significant gender differences in frequency of sexual Fluidity were observed. Sexually fluid females had more positive attitudes toward bisexuality than non-sexually fluid females; however, no significant difference was observed for males. Females were more likely than males to endorse sexual Fluidity beliefs and to believe that sexuality is changeable; and sexually fluid persons were more likely than non-sexually fluid persons to hold those two beliefs. Among males, non-sexually fluid individuals were more likely than sexually fluid individuals to believe that sexuality is something an individual is born with. Females were more likely than males to endorse the belief that sexuality is influenced by the environment. Findings from this research link sexual Fluidity with specific cognitions.
Suleyman I Allakhverdiev - One of the best experts on this subject based on the ideXlab platform.
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regulatory role of membrane Fluidity in gene expression and physiological functions
Photosynthesis Research, 2013Co-Authors: Kirill S Mironov, Suleyman I AllakhverdievAbstract:Plants, algae, and photosynthetic bacteria experience frequent changes in environment. The ability to survive depends on their capacity to acclimate to such changes. In particular, fluctuations in temperature affect the Fluidity of cytoplasmic and thylakoid membranes. The molecular mechanisms responsible for the perception of changes in membrane Fluidity have not been fully characterized. However, the understanding of the functions of the individual genes for fatty acid desaturases in cyanobacteria and plants led to the directed mutagenesis of such genes that altered the membrane Fluidity of cytoplasmic and thylakoid membranes. Characterization of the photosynthetic properties of the transformed cyanobacteria and higher plants revealed that lipid unsaturation is essential for protection of the photosynthetic machinery against environmental stresses, such as strong light, salt stress, and high and low temperatures. The unsaturation of fatty acids enhances the repair of the damaged photosystem II complex under stress conditions. In this review, we summarize the knowledge on the mechanisms that regulate membrane Fluidity, on putative sensors that perceive changes in membrane Fluidity, on genes that are involved in acclimation to new sets of environmental conditions, and on the influence of membrane properties on photosynthetic functions.
