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The economic and biological significance of blunt snout bream (Megalobrama amblycephala) makes this species important to explore the underlying molecular mechanism of hypoxia response. In the present study, we compared the transcriptional responses to serious hypoxia in skeletal muscle among hypoxia tolerant (MT), sensitive (MS) and control (without hypoxia treatment, MC) M. amblycephala obtained...
Heme oxygenase (HO) that catalyzes the degradation of heme, is involved in responding and using oxygen in teleost fish. Physiologic heme degradation can be catalyzed by two isozymes of HO (HO-1 and HO-2). In fish, the molecular constructions, expression characteristics and hypoxic regulation of HO-2 are still not well known. Here, we report the isolation and characterization of duplicated HO-2 genes...
Thermal stress, encountered frequently in aquaculture, affects diverse physiological processes and behavior of fish; however, the mechanism underlying these effects may vary among species. Half-smooth tongue sole (Cynoglossus semilaevis) widely inhabits Asian coastal waters and has been intensively cultured in China. In this study, the transcriptomes of three tissues (gill, liver and muscle) of half-smooth...
Two distinct myoglobin (mb) transcripts have been reported in common carp, Cyprinus carpio, which is a hypoxia-tolerant fish living in habitats with greatly fluctuant dissolved oxygen levels. Recombinant protein analysis has shown functional specialization of the two mb transcripts. In this work, analysis for mb-containing bacterial artificial chromosome (BAC) clones indicated different genome loci...
Neuroglobin (Ngb) is a recently discovered vertebrate globin expressed primarily in neurons. Ngb expression is induced by hypoxia and ischemia, and Ngb protects neurons from these insults. However, its normal physiological role and the mechanism underlying its neuroprotective action are uncertain. We report production of a transgenic mouse in which Ngb is overexpressed under the control of the chicken...
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