Dopamine depresses the immune ability and increases susceptibility to Lactococcus garvieae in the freshwater giant prawn, Macrobrachium rosenbergii

Crustacean neuroendocrine systems and their signaling agents

“…Lohrmann and Kamemoto 1987;Morris et al 2000;Morris and Ahern 2003). In addition, both serotonin and octopamine are well-known players in the control of aggression (e.g., Edwards and Kravitz 1997;Kravitz 2000;Huber et al 2001;Sosa and Baro 2002;Panksepp et al 2003;Huber 2005;Pedetta et al 2010), whereas dopamine has been implicated in the control of immune function (e.g., Cheng et al 2005;Li et al 2005;Chang et al 2007). As discussed later in this review, hormonally delivered serotonin has recently been implicated in the control of adult neurogenesis within several regions of the crustacean brain ( e.g.…”

The effect of sodium alginate on the immune response of tiger shrimp via dietary administration: Activity and gene transcription

“…Superoxide dismutase (SOD) activity was measured by its ability to inhibit superoxide radical-dependent reactions using the Ransod Kit (Randox, Crumlin, UK) based on previously described methods [18,19]. One unit of SOD was defined as the amount required for inhibiting the rate of xanthine reduction by 50%.…”

Effects of dissolved oxygen on survival and immune responses of scallop (Chlamys farreri Jones et Preston)

“…As a free radical elimination enzyme, SOD is essential to minimise the oxidative damage to host cells in the immune defence [28,29]. The decreasing SOD activity shows a reduced immune ability in tiger shrimp Penaeus monodon exposed to lower salinity or higher salinity [30], or in freshwater giant prawn Macrobrachium rosenbergii injured with dopamine [31]. When challenged with b-glucan [29] or zymosan [28], white shrimp Litopenaeus vannamei and Chinese prawn Fenneropenaeus chinensis showed increasing SOD activity.…”