[show abstract][hide abstract] ABSTRACT: In the centrosymmetric trinuclear cation of the title compound, [Co₃(C₄H(8)N₄)₆(H₂O)₆](C₁₀H₆O₆S₂)Cl₄, the three Co(II) atoms are bridged by six triazole mol-ecules via the N atoms in the 1,2-positions. The central Co(II) atom, lying on an inversion center, is coordinated by six triazole N atoms while the terminal Co(II) atoms are coordinated by three triazole N atoms and three water O atoms in a distorted octa-hedral geometry. The naphthalene-disulfonate anion is also centrosymmetric. The four chloride counter anions are half-occupied; the H atoms of the amino groups show an occupancy of 2/3. O-H⋯Cl, O-H⋯O and N-H⋯O hydrogen bonds link the complex cations and the chloride and naphthalene-1,5-disulfonate anions.
[show abstract][hide abstract] ABSTRACT: A fascinating polythreaded coordination network formed by 1D crankshaft shaped chains threading into a 2D undulated sheet in a one-over/one-under interweaving fashion was reported, in which the 2D layer exhibits an unusual polyknotted entanglement containing triple-stranded molecular braids.
Chemical Communications 02/2012; 48(26):3212-4. · 6.38 Impact Factor
[show abstract][hide abstract] ABSTRACT: To deeply explore the effects of microcystins (MC-LR) on Bax and Bcl-2 during the course of MC-LR promoting liver tumor.
applied to set up the animal model, and the effect of MC-LR promoting liver tumor was evaluated by the Albertgamma-GT methods. And then, the immunohistochemical technique, RT-PCR and image analysis were used to study the expression of the Bcl-2 and Bax during the course of promoting tumor.
(1) MC-LR might enhance the positive reaction rate of GGT. The positive reaction rate of GGT in DEN + pure toxin group was 100%, it was significantly higher than the DEN control group 22.22% (P < 0.05). (2) The intension and areas of the protein expression of Bcl-2 in DEN + pure toxin group were 0.0977 and 0.0315, and in DEN control group were 0.0460 and 0.0205, respectively. The expression level of Bcl-2 protein in DEN + pure toxin group were significantly higher than in DEN control group (P < 0.05). Simultaneously, the protein expression of Bax was significantly decreased by MC-LR (P < 0.05). The intension and areas of the expression of Bax in DEN + pure toxin group were 0.0283 and 0.0073, and in DEN control group were 0.0655 and 0.0244 respectively. (3) The mRNA expression of Bcl-2 was significantly increased by MC-LR. The intension of Bcl-2 mRNA expression in DEN + pure toxin group was 2.244, being significantly higher than in the other groups (P < 0.05). However, the mRNA expression of Bax showed no significant difference between DEN + pure toxin and the other groups.
The expression change of Bcl-2 and Bax should possibly play an important role in the course of MC-LR promoting liver tumor.
Zhonghua yu fang yi xue za zhi [Chinese journal of preventive medicine] 01/2007; 41(1):13-6.
[show abstract][hide abstract] ABSTRACT: A new three-dimensional heterometallic MnIICuII azide-bridged coordination polymer, [Mn2Cu(N3)6(en)2]n (1), was synthesized by assembling MnII, CuII, azide, and ethylenediamine in solution condition. The 3D structure of 1 can be described as end-on (EO) azide-bridged Mn2Cu trinuclear units linked by end-to-end (EE) azide bridges. Magnetic analysis of 1 indicates that the EO- and EE-azide bridges mediate the ferromagnetic and antiferromagnetic exchange interactions, respectively, with the antiferromagnetic coupling dominating the magnetic properties.