RESUMO
Objective To determine the correlation between high serum levels of homocysteine (Hcy), low folate and vitamin B12 levels and the clinical index of neonatal hypoxic ischemic encephalopathy (HIE), providing the reference for the diagnosis and treatment of neonatal patients with HIE. Methods Totally 94 cases of neonatal patients with HIE (32 mild, 40 moderate, and 22 severe) treated by Tianjin children’s hospital from April 2010 to April 2011 were enrolled. The control group was 20 cases of neonatal patients with neonatal swallowing syndrome at the same period. The serum levels of Hcy, folate and vitamin B12 were compared between four groups. Results There were significant differences in serum levels of Hcy, folate and vitamin B12 between four groups (P<0.05). Compared with the control group, there was higher level of Hcy and lower levels of folate and vitamin B12 in HIE groups. The Hcy levels increased with the deterioration of HIE in three HIE groups. The serum level of vitamin B12 was significantly lower in severe group than that in moderate group (P<0.05). Conclusion The serum Hcy level has certain reference value in tassessment of the severity of HIE. The supplementation of folate and vitamin B12 may play an active role in the process of the treatment in neonatal patients with HIE.
RESUMO
Objective To investigate the risk factors associated with feeding intolerance in very low birth weight infants (VLBWI) and to investigate the beneficial factors for preventing feeding intolerance.Methods Retrospectively analysis was carried out in 151 VLBWI cases in our hospital from January 2005 to November 2010.Logistic regression analysis was performed to find the risk factors of feeding intolerance.Results The overall rate of feeding intolerance in VLBWI was 47.7 ％ (72/151).Dysporia and infection were associated with feeding intolerance in VLBWI (Wald x2 =7.748 and 4.555,P =0.05 and 0.033 respectively).Gender,multifetation were not associated with feeding intolerance(Ps ＞0.05).Conclusion The feeding intolerance is associated with dysporia and infection in VLBWI.
RESUMO
Objective To explore the effect of ?-elemece on the reverse of drug resistance and the expression of P-glycoprotein(P-gp) in MDR K562/ADM cells. Methods MTT method was used to detect the sensitivity of cell and its reverse of drug resistance.Immunohistochemistry and immunoelectron microscopy were for observing the expression of P-gp.It's quantitative analysis was determined by flow cytometry.All experimental data were dealt with by SPSS(10.0 production pacility) soft ware. Results 1.Non-cytotoxic dose of ?-elemece(4.0?mg/L) could obviously decrease the IC-(50) value of K562/ADM cells to ADM.The reversing fold was 2.18;2.The level of P-gp expression was higher in K562/ADM cells than that in its parent K562 cells.Our studies also showed that the distribution of P-gp was on membrane of K562/ADM cells;3.Non-cytotoxic dose of ?-elemece(4.0?mg/L) could remarkably decrease the P-gp expression in MDR K562/ADM cells.Conclusion\ ?-elemece could evidently reverse drug resistance of K562/ADM to ADM.Decreasing the P-gp expression in drug resistance cell is one of the main mechanism of reversion.