Search Results - "Tash, J. S."

Investigation of the role of nitric oxide synthase 2 in pregnancy using mutant mice by Burnett, TG, Tash, JS, Hunt, JS

“…Nitric oxide (NO) has been implicated as a signalling molecule in many cellular processes. As nitric oxide synthase 2 (NOS-2) is the main isoform expressed in…”
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Identification, Characterization, and Functional Correlation of Calmodulin-Dependent Protein Phosphatase in Sperm by Tash, J. S., Krinks, M., Patel, J., Means, R. L., Klee, C. B., Means, A. R.

“…Preliminary data demonstrated that the inhibition of reactivated sperm motility by calcium was correlated with inhibited protein phosphorylation. The…”
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Temporal changes in motility parameters related to acrosomal status: identification and characterization of populations of hyperactivated human sperm by ROBERTSON, L, WOLF, D. P, TASH, J. S

“…The occurence and time course of capacitation, acrosomal loss, and hyperactivated motility require quantitative definition in order to characterize fertile…”
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Fertilization of Sea Urchin Eggs and Sperm Motility Are Negatively Impacted under Low Hypergravitational Forces Significant to Space Flight by Tash, J. S., Kim, S., Schuber, M., Seibt, D., Kinsey, W. H.

“…Sperm and other flagellates swim faster in microgravity (μG) than in 1 G, raising the question of whether fertilization is altered under conditions of space…”
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Cyclic adenosine 3',5' monophosphate, calcium and protein phosphorylation in flagellar motility by Tash, J S, Means, A R

“…cAMP and calcium are two important regulators of sperm flagellar motility. cAMP stimulates sperm motility by activating cAMP-dependent protein kinase and…”
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Identification of Phosphoproteins Coupled to Initiation of Motility in Live Epididymal Mouse Sperm by Tash, Joseph S., Bracho, Gerácimo E.

“…A method for collecting live immotile cauda epididymal mouse sperm that initiate motility by dilution into an activation buffer is described. Sperm in…”
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Microgravity alters protein phosphorylation changes during initiation of sea urchin sperm motility by Tash, J. S., Bracho, G. E.

“…European Space Agency (ESA) studies demonstrated that bull sperm swim with higher velocity in microgravity (microG) than at 1 G. Coupling between protein…”
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Physiological implications of the presence, distribution, and regulation of calmodulin in eukaryotic cells by Means, A R, Tash, J S, Chafouleas, J G

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Regulation of human sperm motility and hyperactivation components by calcium, calmodulin, and protein phosphatases by Ahmad, K, Bracho, G E, Wolf, D P, Tash, J S

“…The role of Ca2+, calmodulin, and protein phosphatases on motility and hyperactivation of noncapacitated, capacitating, and detergent-permeabilized reactivated…”
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Regulation of protein phosphorylation and motility of sperm by cyclic adenosine monophosphate and calcium [Dogs] by Tash, J S, Means, A R

“…Motility and protein phosphorylation have been measured under identical experimental conditions in ejaculated dog sperm lysed with low concentrations of Triton…”
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Axokinin Phosphorylation by cAMP-Dependent Protein Kinase Is Sufficient for Activation of Sperm Flagellar Motility by TASH, J. S, HIDAKA, H, MEANS, A. R

“…Using a selective inhibitor of cAMP-dependent protein kinase, N-[2(methylamino)ethyl]-5-isoquinolinesulfonamide (H-8), the requirement for cAMP-dependent…”
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Quantitation of specific parameters of motility in large numbers of human sperm by digital image processing by MACK, S. O, WOLF, D. P, TASH, J. S

“…The CellSoft computer-assisted digital image analysis system was validated for quantitating specific motility parameters in large numbers of human sperm…”
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Tumor necrosis factor-alpha attenuation of luteinizing hormone-stimulated androstenedione production by ovarian theca-interstitial cells: inhibition at loci within the adenosine 3',5'-monophosphate-dependent signaling pathway by Zachow, R J, Tash, J S, Terranova, P F

“…Tumor necrosis factor-alpha (TNF) blocks LH-stimulated androstenedione production by immature rat theca-interstitial cells (TIC) in vitro. The mechanism for…”
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Effect of measurement conditions on quantification of hyperactivated human sperm subpopulations by digital image analysis by MACK, S. O, TASH, J. S, WOLF, D. P

“…The effect of different measurement conditions on the quantification of hyperactivated (HA) motility in human sperm by digital image analysis (DIA) was…”
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Glucose regulation of guinea-pig sperm motility by Mujica, A., Moreno-Rodriguez, R., Naciff, J., Neri, L., Tash, J. S.

“…Washed guinea-pig spermatozoa from the vas deferens re-acquired progressive motility within 1–2 min of incubation in minimal culture medium containing pyruvate…”
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Regulation of Sperm Motility: Emerging Evidence for a Major Role for Protein Phosphatases by TASH, JOSEPH S., BRACHO, GERACIMO E.

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Regulation of the testis sertoli cell by follicle stimulating hormone by Means, A R, Dedman, J R, Tash, J S, Tindall, D J, van Sickle, M, Welsh, M J

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Mechanism for procaine-mediated hyperactivated motility in guinea pig spermatozoa by Mújica, A, Neri-Bazan, L, Tash, J S, Uribe, S

“…Hyperactivated motility was studied in guinea pig spermatozoa. In the presence of the local anesthetic procaine, a high number of sperm cells (64%) showed…”
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Changes in content and cAMP-dependent phosphorylation of specific proteins in granulosa cells of preantral and preovulatory ovarian follicles and in corpora lutea by Richards, J S, Sehgal, N, Tash, J S

“…The responsiveness of granulosa cells to the gonadotropins and cAMP increases as ovarian follicles mature. To determine if this change in response might be…”
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Investigations on adenosine 3',5'-monophosphate phosphodiesterase in ram semen and initial characterization of a sperm-specific isoenzyme by Tash, J S

“…Phosphodiesterase is shown to occur in ram semen, and its activity to be higher in spermatozoa than in seminal plasma. Using similar substrate levels, the rate…”
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