[Selection of Human Cytomegalovirus Screening Target Population in Voluntary Blood Donors in Beijing City of China].

OBJECTIVE: To find a group of the highest proportion of HCMV antibody negative among the voluntary blood donors in Beijing, and to establish a database for the special clinical blood needs. METHODS: The blood samples were collected from 2518 eligible donors who were randomly selected according to the national compulsory blood screening programs, the HCMV-IgG antibody were detected by using enzyme linked immunosorbent assay (ELISA). According to blood donors of different sex, age, educational degree, born area, the results of detection were analyzed and compared. RESULTS: The HCMV-IgG antibody negative rate of eligible blood donors in Beijing was 10.68% (269/2518). According to the different sex, the HCMV-IgG antibody negative rate was 11.84% (210/1774) for men, and was 7.93% (59/744) for women. In comparsion with different ages, the HCMV-IgG antibody negative rate of 18-25 years old men was 13.51% (181/1340), the HCMV-IgG antibody negative rate of 26-30 year old men was 8.68% (62/714), the HCMV-IgG antibody negative rate of 31-35 year old men was 5.60% (26/464). Along with the age growth, the HCMV-IgG antibody negative rate gradually decreased. In comparison with different born area, the HCMV-IgG antibody negative rate was the highest in area of Beijing and Tianjin (18.59%, 50/269). In comparison with different educational levels, the HCMV-IgG antibody negative rate was the highest in men who have achieved bachelor or above (13.52%, 86/636). CONCLUSION: The HCMV antibody screening in the Beijing voluntary blood donors needs to select the 18-25 year old male population whose educational level have achieved bachelor or above. The organization or establishment of this group can provide a base for HCMV antibody screening strategy.

catena-Poly[[aqua-[1,4-bis-(1H-imidazol-4-yl)benzene]cadmium]-µ(3)-5-methyl-isophthalato].

In the title coordination polymer, [Cd(C(9)H(6)O(4))(C(12)H(10)N(4))(H(2)O)](n), the Cd(II) atom has a NO(6) donor set and is coord-inated by five carboxyl-ate O atoms from three different 5-methyl-1,3-phenyl-enediacetate (pda(2-)) anions, one O atom from a water mol-ecule and one N atom from a 1,4-bis-(1H-imidazol-4-yl)benzene (L) ligand, displaying a highly distorted penta-gonal-bipyramidal geometry. Each pda(2-) anion acts as a µ(3)-bridge, linking Cd(II) atoms to form one-dimensional slabs extending parallel to [010]. In the crystal, adjacent mol-ecules are linked through N-H⋯N and N-H⋯O hydrogen bonds into a three-dimensional network.

[Effect of human plasma on preservation of red blood cells].

In order to study whether plasma can affect the structure and function of red blood cells during their storage period, the differences of pH value, concentration of K(+), Na(+), osmotic fragility, plasma hemoglobin, AchE, ATP, 2.3-DPG, P50 in suspended RBC, washed RBC, and RBC with various plasma volume at different storage times were compared. The results showed that plasma helped the blood to keep the RBC at high pH value, low K(+), high Na(+) and maintain RBC-ATP, oxygen carry capacity and deformability, but no effect on maintenance of osmotic fragility, and levels of plasma hemoglobin, AchE, ATP and 2.3-DPG was found in preservated blood. In conclusion, human plasma may be in favour of the preservation of red blood cells.