The shortage of healthy blood resource and the problem of virus infection have urged the study of blood substitute. The technologies of modified hemoglobin, perfluorocarbons and Hb-vesicles have been developing quickly, and some of which have already been formed into large-scale preparation and production. However, there is no completed evaluation system for the blood substitute at present, and it is still hard to estimate the function of blood substitute completely. This article takes the evaluation of the blood substitute as a key point, discusses the evaluation parameters of blood substitute, and presents the physical and chemical property, the availability and safety as well as the preservation condition of the blood substitute. The data concerned are based on the studies in China and abroad and referred to the latest progress all over the world.
Animals ; Blood Substitutes ; administration & dosage ; standards ; Chemical Phenomena ; Erythrocytes ; drug effects ; metabolism ; Fluorocarbons ; administration & dosage ; adverse effects ; Hemoglobins ; administration & dosage ; adverse effects ; Humans ; Quality Control

Objective To elucidate the molecular basis for induced resistance of N. gonorrhoeae to ceftriaxone in vitro. Methods The reference strain ATCC49226 and clinical isolate ZSSY00205 of N. gon-orrhoeae were exposed to subinhibitory concentration of ceftriaxone for the induction of resistance. Then,suppression subtractive hybridization was performed with the pre-induction parent strains as drivers and post-induction mutant strains as testers to create a subtractive cDNA library. Following that, a total of 192 clones were randomly selected from the library, and arrayed by spotting onto nylon membranes. Finally, dif-ferentially expressed genes were screened by hybridization with labeled-RsaI restriction fragments from the sensitive and resistant N.gonorrhoeae strains respectively, and analyzed by sequencing and homology research using Blast program. Results A subtractive library for these resistant N.gonorrhoeae strains was generated by SSH technique. Microarray analysis and homology research confirmed 5 genes related to ceftriaxone resistance, i.e. mtrR, mtrC, gyrB, rpsJ and PJD1. Conclusions The induced resistance of N. gonorrhoeae to ceftriaxone may be associated with mtrR, mtrC, gyrB, rpsJ and PJD1 genes which probably mediate the resistance by enhancing the activity of efflux pump system.

OBJECTIVETo evaluate the association of signal transducer and activators of transcription 3 (STAT3) -1096G/C polymorphism in promoter region with the susceptibility to HBsAg positive hepatocellular carcinoma (HCC).

METHODSA total of 632 patients with HCC and 723 HBV-infected subjects without HCC treated at Changhai Hospital of Shanghai from 2009 to 2012 were included in this case-control study. The polymorphism of STAT3 -1096 G/C was genotyped by Fluorescent probe-Real time quantitative PCR. Univariate analysis was used to calculate the odds ratio (OR) and its 95% confidence interval (CI).

RESULTSThe frequency of genetic allele STAT3 -1096G/C (GC+CC) of control group and case group were 61.83% (447/723) and 60.60% (383/632), while difference of HCC risk was not found among different genotypes (OR = 0.95, 95%CI: 0.76-1.18). When stratified by sex, the frequency of genetic allele STAT3 -1096C (GC+CC) of control group and case group were 62.18% (314/505) and 61.75% (331/536) in men, 61.01% (133/218) and 54.17% (52/96) in women, respectively, while difference of HCC risk was not found among different genotypes (OR = 0.98, 95%CI: 0.77-1.26; OR = 0.76, 95%CI: 0.47-1.26, respectively). When stratified by HBV genotypes, the frequency of genetic allele STAT3 -1096C (GC+CC) of control group and case group were 61.45% (110/179) and 53.13% (34/64) in HBV genotype B, 62.87% (276/439) and 60.27% (226/375) in HBV genotype C, respectively, while difference of HCC risk was not found among different genotypes (OR = 0.71, 95%CI: 0.40-1.26; OR = 0.90, 95%CI: 0.68-1.19, respectively).

CONCLUSIONSTAT3 -1096G/C polymorphism was not associated with the susceptibility to HCC for the HBV-infected subjects without HCC.

Aged ; Alleles ; Carcinoma, Hepatocellular ; Case-Control Studies ; China ; Disease Susceptibility ; Female ; Genetic Predisposition to Disease ; Genotype ; Hepatitis B ; Hepatitis B virus ; Humans ; Liver Neoplasms ; Male ; Odds Ratio ; Polymorphism, Genetic ; Polymorphism, Single Nucleotide