Objective To understand the relationship between coagulation function and birth weight and gestational age in newborn. Methods Five hundred premature infants in NICU from June 2015 to June 2016 were enrolled. Perinatal high-risk factors(gestational hypertension, gestational diabetes, placenta previa, spontaneous premature delivery) and general status (gestational age, sex, delivery mode, birth weight)were documented. Blood coagulation function (PT, APTT, FDP, DD, FIB, AT-Ⅲ) was detected within 6 h after birth. The premature infants were divided into three groups according to gestational age, early preterm neonate group (28-30+6 weeks, 48 cases), moderate preterm neonate group (31-33+6 weeks, 125 cases), and late preterm neonate group (34-36+6 weeks, 216 cases). And there were 111 term infants (37- 42 weeks, 111 cases). In addition , the relation between birth weight and coagulation function was analyzed. Sixty-six twins were collected and divided into tow groups according to their weight, the-lighter group and the-heavier group. The coagulation function was analyzed and compared among different gestational age groups. Results There were no differences in perinatal risk factors (P > 0.05). There were significant differences in various coagulation parameters among three groups [APTT: (93.25 ± 21.34), (82.80 ± 21.37), (78.29 ± 17.77), (62.03 ± 13.7) s;FIB: (1.95 ± 0.96), (1.67 ± 0.60), (1.51 ± 2.44), (1.40 ± 0.85) g/L; DD: (2.11 ± 0.64), (1.02 ± 0.33), (0.66 ± 0.31), (0.51 ± 0.25) mg/L;AT-Ⅲ:(25.89 ± 11.80)%, (33.86 ± 11.40)%, (36.65 ± 13.60)%, (45.18 ± 14.82)%] (P<0.05). The levels of APTT, FDP, DD tended to decrease with the increasing of gestational age. The level of FIB and AT-Ⅲtended to increase with the increasing of gestational age. Correlation analysis showed that the levels of APTT, FDP, and DD were negatively correlated with gestational age (P<0.05) and the levels of FIB and AT-Ⅲwere positively correlated with gestational age (P<0.05). In the twins group, no significant difference was showed in different weight (P > 0.05). Conclusions The coagulation function in early life in premature infants is associated with gestational age, and has no relationship with birth weight. The coagulation function of premature infants is in a changing and gradually mature process, which should be monitored dynamically.

Objective To analyze the correlation between the positive rate of autoantibody and hepatitis C virus load and the relationship between the positive incidence and the status of liver function in patients infected HCV.Methods 168 patients infected hepatitis C virus were included,to detect serum autoantibody,HCV loads and liver function file.And 129 healthy controls were collected to test the serum autoantibody.Using the Chi-square test to analyze the count data,and performing student test or Nonparametric test to study measurement data,compared the positive rate of autoantibody in patients with HCV and that in healthy controls.Analyzed the correlation among the positive incidence of autoantibody,HCV load and the status of liver function in patients infected HCV,and studied the relationship of the positive rate of autoantibody with age and also with gender of the patients.Results The positive rate of autoantibody in patients with HCV was 35.12%(59/168),in which ANA accounted for 33.93%,SMA took up 2.98%,AMA-M2 made up 1.80% and anti-LKM1 1.20%.No patient existed LC-1 or SLA/LP in his/her serum.The total positive rate of autoantibody and ANA both were higher in pa-tients than in healthy controls (χ2=23.179,P=0.000;χ2=21.360,P=0.000).There existed no significant difference in the levels of HCV load,total bilirubin (TBil),ALT and AST between the patients whose autoantibody examinations were positive and those who were negative in autoantibody test (χ2=0.113,P=0.945;Z=-1.087,P=0.277;Z=-1.356,P=0.175;Z=-0.153,P=0.878).The positive rate of autoantibody not correlated with the gender (χ2=2.897,P=0.089), but related to the age (t=3.274,P=0.001)of the patients.There existed significant difference in the levels of ALT,AST and the age between the patients HCV RNA negative and those HCV RNA positive (Z=-6.430,P=0.000;Z=-6.123, P=0.000;t=-3.152,P=0.002),and the patients whose HCV RNA were negative younger than those who with HCV RNA positive (44.17 vs 55.27 years).Conclusion It is easy for autoimmunity to occur on persons infected HCV.The posi-tive rate of autoantibody is related to patients’age,but not to the HCV amount in patients.Besides,it cannot predict the sta-tus of the patients’liver injury that weather the autoimmunity appears.But HCV load correlated with patients'age and liver inj ury,which older group patients bring higher virus load and had more serious liver damage.

Objective To analyze the influence of intestinal trefoil factor(ITF) on Bim and Bcl-xl gene expression in neonatal rats with necrotizing enterocolitis(NEC),and to discuss the protective machanism of ITF on NEC.Methods Thirty neonatal rats were divided randomly into control group,NEC group and ITF group.NEC group were given intraperitoneal injection of saline 0.2 ml after NEC model of neonatal rats were established.ITF group were given intraperitoneal injection ITF 0.2mg after NEC model of neonatal rats were established.On the 4th day,all the subjects were put to death.We made HE stainting of the slice and made a histopathological examination and immunohistochemical method to detect Bim and Bc1-xl genes expression,and make image analysis.Results The pathological lesions indicated that intestinal tissue necrosis was severe in NEC group,which median was 3 point,but obviously lessen in ITF group,which median was 1 point,with ITF interfering.Image analysis showed the NEC group Bim gene expression (7.87 ± 0.14) higher than those in the control group (2.15±0.28) and ITF group (3.27±0.34),there were significant differences between 3 groups(P<0.05).Bcl-xl gene expression(11.23±0.22)in ITF group was higher than that in control group(1.89±0.28) and NEC group(2.51±0.13),there were significant differences between 3 groups(P<0.05).Conclusions Intestinal injury was ameliorated after ITF was injected intraperitoneally,ITF may protect the intestinal injury of neonatal rats with NEC by changing the Bim gene and Bc1-xl gene expresstion ratio.

Objective To study the effects and side effects of different dose of rHu-EPO on the treatment of brain injury in premature infants. Methods The infants who had suffered fetal distress and first one minute of Apgar was under 7score after birth and were sent to NICU within 24h were studied. We totally collected 90 infants and divided into three groups randomly, including large dose group, small dose group and control group. The large and small group were injected hypodermicly with rHu-EPO 1000U/kg, 500U/kg, three times per week for three weeks, and the control group were given general treatment without rHu-EPO at same time. Before treatment, one week and three weeks after treatment, we collected concentration of NSE, S100B and skull ultrasound to assess the effects. Neonatal behavioral neurological assessment(NBNA) were performed twice before and at weeks of correct gestational age. To survey the side effects, we collected general information such as the incidence rate of ROP and hemangioma, AST/ALT/PLT/Urea /Cr and so on. Results After one-week treatment, the concentration of NSE and S100B were no significant difference(P ＞ 0. 05) in the small dose group, but were statistically significant in the large dose group(P ＜ 0. 05). After three-week treatment, the comparison of NSE、S100B in both groups was statistically significant(P ＜ 0. 05). The head ultrasound comparison was of statistically significant in both group(P ＜ 0. 05), and so as NBNA and head MRI. The frequency of blood transfusion was statistically significant in both group(P ＜ 0. 05) compared with control group. Routine blood test including liver and kidney function showed that there was no significant difference before and after treatment(P ＞ 0. 05). Conclusion The neuroprotective effect of rHu-EPO on brain injury in preterm infants is connected with its dose and period of treatment, it need high dose or long time to express neuroprotective function.