[Analysis of Correlation between IgG Titer of Pregnant Women and Neonatal Hemolytic Complications of Different Blood Groups].

OBJECTIVE: To study the relationship between IgG titer of pregnant women and hemolytic disease of newborn(HDN) with different blood groups. METHODS: Four hundred pregnant women, including pregnant women with type O blood, were selected from May 2014 to January 2015 in our hospital for inspection and a couple of different blood groups, the IgG titer of pregnant women were detected in the inspection process. According to neonatal HDN, newborns were divided into 2 groups: HDN group(85 cases) and non-HDN group(315 cases). The incidence of postpartum neonatal hemolytic disease was tracked and the correlation of IgG titers with HDN were systematically analyzed. RESULTS: In the production and inspection process, the IgG titer in pregnant women was divided into <1:64, 1:64, 1:128, 1:256 and greater than or equal to 1:512 five groups. the comparison of HDN incidence rate in 4 groups of IgG titer >64 and IgG titer <1:64 group showed that the prevalence of ABO hemolytic disease of newborn were 96.9%, 79.6%, 63, 7% and 28.8%, there was a certain correlation of pregnant women IgG titers with ABO hemolytic disease of the newborn, that is, with the increase of IgG titer, the incidence of hemolytic disease of newborns increased in certain degree (r=0.8832), the risk in 4 groups of neonatal HDN was higher than that in IgG titer <1:64 of IgG titer >64 HDN group. CONCLUSION: There is a certain corelation between prevalence of ABO-HDN and IgG titer of pregnant women. For these pregnant women, the control of the pregnant women IgG titer has a positive clinical significance to reduce the incidence of hemolytic disease of the newborn.

Association of mRNA expression level of IP-10 in peripheral blood mononuclear cells with HBV-associated acute-on-chronic liver failure and its prognosis.

HBV-associated acute-on-chronic liver failure is prevalent in mainland China. The prognosis of HBV-ACLF is poor. The mortality of HBV-ACLF is approximately 80%. Therefore, a prognostic indicator was needed in order to allow us to intervene as soon as possible. The model for end-stage liver disease (MELD) scoring system is widely used to predict the prognosis of liver failure. However, the assessment is too complex to restrict its application. This study aimed to investigate the expression of IP-10 in peripheral blood mononuclear cells (PBMC), in order to explore the relationship between the expression and prognosis of patients with HBV-ACLF. The mRNA level of IP-10 in PBMCs were analyzed in 80 patients with HBV-ACLF, 40 patients with chronic hepatitis B (CHB) and 40 healthy people by fluorescent quantitative PCR. IP-10 mRNA level was significantly higher in the HBV-ACLF group than in the other two groups (P<0.01). Group with MELD score below 30 had lower IP-10 mRNA level than group with MELD score over 30 (P<0.05). The IP-10 mRNA level in PBMCs in positive group was higher than that in negative group (P<0.01). With a threshold of 0.925, the area under the receiver operating characteristic (ROC) curves was 0.815. These findings suggest that assessment of IP-10 mRNA level in the PBMCs would be helpful for evaluating the disease severity and prognosis in patients with HBV-ACLF.

Effects of experience on fetal voice recognition.

The ability of human fetuses to recognize their own mother's voice was examined. Sixty term fetuses were assigned to one of two conditions during which they were exposed to a tape recording of their mother or a female stranger reading a passage. Voice stimuli were delivered through a loudspeaker held approximately 10 cm above the maternal abdomen and played at an average of 95 dB SPL. Each condition consisted of three 2-min periods: no stimulus, voice (mother or stranger), and no stimulus. Fetal heart rate increased in response to the mother's voice and decreased in response to the stranger's; both responses were sustained for 4 min. The finding of differential behavior in response to a familiar versus a novel voice provides evidence that experience influences fetal voice processing. It supports an epigenetic model of speech perception, presuming an interaction between genetic expression of neural development and species-specific experience.