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Full-Text Articles in Immunity

The Role Of The Mek1/2-Erk-Rsk Signalling Axis In Innate Immune Memory, Rachel Low Aug 2023

The Role Of The Mek1/2-Erk-Rsk Signalling Axis In Innate Immune Memory, Rachel Low

Electronic Thesis and Dissertation Repository

Macrophages are innate immune cells that change their cellular states in response to different stimuli. This process is referred to as “innate immune memory” which can render two polarizing states: hyporesponsive (tolerated) or hyperresponsive (trained) states. To date, epigenetic modifications were shown to play a key role in innate immune memory. However, the signalling that induces memory is poorly understood. In this study, I examined the effects of various inhibitors targeting key signalling molecules involved in the activation of macrophages by the Gram-negative cell wall component lipopolysaccharide. I found that prolonged inhibition of the MEK1/2-ERK-RSK signalling axis prevented tolerance and …


Effects Of 11-Kt And Prolactin On Gene Expression, Parental Care Behaviour And Immune Response In Male Bluegill Sunfish., Adriano A P Da Cunha Jun 2023

Effects Of 11-Kt And Prolactin On Gene Expression, Parental Care Behaviour And Immune Response In Male Bluegill Sunfish., Adriano A P Da Cunha

Electronic Thesis and Dissertation Repository

Parental care is very critical for reproduction in species that provide it. Hormones such as prolactin and androgens play a crucial role in parenting and reproductive behaviours. In mammals and birds, prolactin’s role in parental care is well-established; it stimulates milk production and stimulates attachment to newborns by its release in the preoptic area of the hypothalamus (POA), among other functions. Androgens, on the other hand, are commonly associated with male secondary sex characteristics, territoriality, and aggressiveness in mammals and birds. There are similar reports of prolactin and androgen effects in fish, but there are fewer studies. I investigated if …