Now showing items 31-40 of 2589
Tyrosine isomers mediate the classical phenomenon of concomitant tumor resistance
(American Association for Cancer Research, 2011-11)
Concomitant tumor resistance (CR) is a phenomenon originally described in 1906 in which a tumor-bearing host is resistant to the growth of secondary tumor implants and metastasis. Although recent studies have indicated ...
Activation of spleen tyrosine kinase (Syk) at fertilization in Rhinella arenarum eggs
(U B C Press, 2014-12)
Recently, we have provided evidence for the involvement of a cytosolic tyrosine–phosphorylatable 70 kDa oocyte protein in Rhinella arenarum (Anura: Bufonidae) fertilization. The aim of the present work was to characterize ...
Concomitant tumor resistance: The role of tyrosine isomers in the mechanisms of metastases control
(American Association for Cancer Research, 2012-03)
Concomitant tumor resistance (CR) is a phenomenon in which a tumor-bearing host is resistant to the growth of secondary tumor implants and metastasis. Although previous studies indicated that T-cell-dependent processes ...
Oxidation of Tyrosine Photoinduced by Pterin in Aqueous Solution
Pterins, heterocyclic compounds widespread in biological systems, accumulate in the skin of patients suffering from vitiligo, a chronic depigmentation disorder. Pterins have been previously identified as good photosensitizers ...
Defective Fc-, CR1- and CR3-mediated monocyte phagocytosis and chemotaxis in common variable immunodeficiency and X-linked agammaglobulinemia patients
(Hogrefe & Huber PublishersGottingenAlemanha, 2003)
Human sperm subpopulations: relationship between functional quality and protein tyrosine phosphorylation
(European Society of Human Reproduction and Embriology, 2004-12)
Human semen is composed of a heterogeneous population of sperm with varying degrees of structural and functional differentiation and normality, which result in subpopulations of different quality. Using a discontinuous ...
An ACTH-activated protein tyrosine phosphatase (PTP) is modulated by PKA-mediated phosphorylation
In adrenal cortex, ACTH regulation of steroidogenesis depends on PKA-dependent serine/threonine phosphorylation and also on the activity of protein tyrosine phosphatases (PTPs). In addition, ACTH increases total PTPs ...