Immune effects of a bivalent expressed outer membrane protein to American eels (Anguilla rostrota).

The specific and non-specific immune parameters and protection of American eels (Anguilla rostrata) were evaluated after immunized eels with a bivalent expressed out membrane protein (OMP) of porin Ⅱ of Aeromonas hydrophila and ompS2 of Edwardsiella tarda. One hundred eighty eels were distributed into 3 equal groups and intraperitoneal (i.p) injection with phosphate-buffered saline (PBS group), formalin-killed-whole-cell (FKC) of A.

Isolation and characterization of a novel antibacterial peptide derived from hemoglobin alpha in the liver of Japanese eel, Anguilla japonica.

We isolated and characterized a novel antibacterial peptide, AJHbα, derived from hemoglobin alpha in the liver of Japanese eel, Anguilla japonica. It with concentration of 11.30 μM exhibited stronger antibacterial activity against pathogenic bacterium 1 × 10(6) cell ml(-1)Edwardsiella tarda than other two bacteria.

[Comparative studies on the characteristics of the Fourier-transform infrared spectra between sturgeon and shark chondroitin sulfates].

The characteristics of the Fourier-transform infrared spectra of sturgeon and shark chondroitin sulfates (CHSs) were comparatively studied. The results show that sturgeon CHS exhibits special vibrations at the wavenumbers of 1 376, 1 344, 1 310, 1 157, 883 and 856 cm(-1). Further analysis shows that shark CHS contains 6-sulfated-CHS, while sturgeon CHS contains 4, 6-disulfated CHS, indicating that sturgeon CHS could have higher biological activities in decreasing the toxicity of medicine and in killing cancer cells.