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1. Characterization of Akirin in the innate immune response of the kuruma shrimp Marsupenseus japonicus | |||
LIU Ning,SUN Jiejie,WANG Xianwei,WANG Lei,ZHANG Hongwei,ZHAO Xiaofan,WANG Jinxing | |||
Aquatic Science 27 November 2015 | |||
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Abstract:Akirin as a conserved nuclear protein functions in parallel with the NF-κB of the immune deficiency (IMD) pathway and the Toll-like receptor (TLR) pathway. In this study, the full-length cDNAs of Akirin and 14-3-3 in Marsupenaeus japonicus, named as MjAki and Mj14-3-3 were identified separately. MjAki was mainly expressed in hemocytes, heart and intestine and Mj14-3-3 was detected in all six tested tissues including hemocytes, heart, hepatopancreas, gills, stomach, and intestine. The expression of MjAki was upregulated in the hemocytes of shrimp challenged with Vibrio anguillarum and white spot syndrome virus (WSSV), Mj14-3-3 was first decreased and then increased in the shrimp challenged with V. anguillarum and no obviously change in the shrimp challenged with WSSV. The expression of some AMPs was obviously suppressed by knockdown of MjAki and Mj14-3-3 with RNA interference. The interaction of MjAki with Mj14-3-3, dorsal, relish was confirmed in vitro. We proposed that MjAki combined with Mj14-3-3, dorsal and relish, acted as an active nuclear factor of NF-κB dependent pathway in innate immunity of M. japonicus. | |||
TO cite this article:LIU Ning,SUN Jiejie,WANG Xianwei, et al. Characterization of Akirin in the innate immune response of the kuruma shrimp Marsupenseus japonicus[OL].[27 November 2015] http://en.paper.edu.cn/en_releasepaper/content/4664578 |
2. Daily rhythms of urotensin I and II gene expression and hormone secretion in the caudal neurosecretory system of the euryhaline flounder (Platichthys flesus) | |||
Lv Weiqun ,Ying Zhang,Jianghong Xiong,Richard Balment | |||
Aquatic Science 04 April 2013 | |||
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Abstract:The caudal neurosecretory system (CNSS) is a unique neuroendocrine structure for environmental adaptation in fish, and is the major site of expression and secretion of urotensin I (UI) and II (UII). This study examined daily changes in mRNA expression and the secretion profile of UI and UII in the CNSS. Daily rhythms were observed in mRNA level of CNSS UI, urophysis UI, plasma UII, glucose, potassium and sodium. No statistically significant (Cosinor, P>0.05) diel rhythmicity in mRNA level of CNSS UII, urophysis UII, cortisol, lactate, osmolality and chloride were detected. The calculated acrophase of sodium, cortisol, plasma UII, urophysis UII, urophysis UI and mRNA level of CNSS UI rhythms were recorded at 13:04 h, 13:39 h, 14:45 h, 15:27 h. 14:41 h and 14:39 h, respectively and a positive relationship was evident among them. The acrophase of glucose and potassium rhythms were recorded at 18:57 h and 22:35 h, respectively. The glucose levels increased progressively at the onset of the UII surge at 15:00 h and reached peak values at dusk. The results support the hypothesis that the CNSS may play a role in the control of co-ordinated daily changes in energy mobilization, nutritional behavior and osmoregulatory systems in euryhaline flounder. Our findings described for the first time the existence of daily rhythms of CNSS hormone expression and secretion in Platichthys flesus. These results reveal the importance of taking into account the time of day when assessing stress responses and evaluating UI and UII as physiological indicators of stress in this species. | |||
TO cite this article:Lv Weiqun ,Ying Zhang,Jianghong Xiong, et al. Daily rhythms of urotensin I and II gene expression and hormone secretion in the caudal neurosecretory system of the euryhaline flounder (Platichthys flesus)[OL].[ 4 April 2013] http://en.paper.edu.cn/en_releasepaper/content/4532623 |
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