(Cinnamato-κ(2)O,O')(5,5,7,12,12,14-hexa-methyl-1,4,8,11-tetra-aza-cyclo-tetra-decane-κ(4)N,N',N'',N''')nickel(II) perchlorate monohydrate.

In the title compound, [Ni(C(9)H(7)O(2))(C(16)H(36)N(4))]ClO(4)·H(2)O, the macrocyclic 5,5,7,12,12,14-hexa-methyl-1,4,8,11-tetra-aza-cyclo-tetra-decane ligand (L) folds around the Ni(II) atom, which is also chelated by the carboxyl-ate group. The geometry is a distorted N(4)O(2) octa-hedron. In the crystal, adjacent mol-ecules are connected by O-H⋯O and N-H⋯O hydrogen bonds into a zigzag chain parallel to [010].

Assessment of the role of brine shrimp Artemia in white spot syndrome virus (WSSV) transmission.

Challenge tests with Artemia four different development stages (nauplii, metanauplii, pseudoadults and adults) to white spot syndrome virus was carried out by immersion challenge and virus-phytoplankton adhesion route in order to asses the possibility of Artemia acting as a vector of WSSV to penaeid shrimp Litopenaeus vannamei postlarvae. The WSSV succeeded in infecting four stages Artemia, and nested-PCR detection for WSSV revealed positive results to virus-phytoplankton adhesion route. No mass mortalities were observed in penaeid shrimp postlarvae fed with WSSV-positive Artemia which exposed to WSSV by virus-phytoplankton adhesion route, whereas WSSV DNA detected in penaeid shrimp postlarvae by nested-PCR. By contrary, no WSSV-positive was detected in any animal fed with WSSV-negative Artemia. These results indicated that Artemia could serve as a vector in WSSV transmission.

[Establishment and application of a loop-mediated isothermal amplification method for rapid diagnosis of Vibrio cholerae].

OBJECTIVE: To establish a loop-mediated isothermal amplification (LAMP) method for rapid diagnosis of Vibrio cholerae. METHODS: Based on the ompW nucleic sequence of Vibrio cholerae, a pair of primers was designed for LAMP. The reaction conditions were optimized, and the specificity, sensitivity, and practicability of LAMP were tested using 47 bacterial strains and simulated contaminated sites. RESULTS: The results of viable bacterium count showed that LAMP was capable of detecting Vibrio cholerae at a level as low as 1.6x10(2) cfu/ml. The minimal detectable concentration was 1.6+10(3) cfu/ml for simulated contaminated samples such as feces and seawater, and 1.6+10(4) cfu/ml for contaminated milk. All the 21 strains of Vibrio cholerae yielded positive results in LAMP, and the 26 strains of other bacteria all showed negative results, with a detection specificity of 100%. CONCLUSION: The established LAMP method has high specificity and sensitivity for detecting Vibrio cholerae and is applicable in field monitoring and epidemiological study of Vibrio cholerae.