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Tetrahymena pyriformiswas treated with insulin, histamine or serotonin for 30 min and epidermal growth factor (EGF) level was studied inside the cells using specific antibodies and flow cytometry as well as confocal microscopy. The EGF concentration was highly significantly elevated after hormone treatment, regardless of the hormone used. EGF was localized mainly in the cortical region (mucocysts) and in vesicles and this localization did not differ in untreated and treated cells. The results call attention to the possibility of interactions between hormones at unicellular level and points to the presence of a hormonal system in Tetrahymena that includes receptors, hormones and signal transduction pathways as well as hormonal interactions. This could be the basis of further evolution to the hormonal system of multicellulars.

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Hormonal interactions in : Effect of hormones on levels of epidermal growth factor (EGF)

Csaba

Kovács

Pállinger

2005

Cell Biology International

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Шемарова

Коротков

Nosova

2003

Doklady Biological Sciences

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The Role of Tyrosine Phosphorylation in Regulation of Signal Transduction Pathways in Unicellular Eukaryotes

Schemarova

2006

Current Issues in Molecular Biology

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Cited by 3 publications

References 11 publications

Hormonal interactions in : Effect of hormones on levels of epidermal growth factor (EGF)

Hormonal interactions in : Effect of hormones on levels of epidermal growth factor (EGF)

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The Role of Tyrosine Phosphorylation in Regulation of Signal Transduction Pathways in Unicellular Eukaryotes

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