The relationship between the internal oxidation-reduction system and fetal distress on pregnant patients with intrahepatic cholestasis.

OBJECTIVE: To discuss the relationship between the internal oxidation-reduction system and fetal distress in pregnant patients with intrahepatic cholestasis in order to provide a new basis for clinical treatment and research. PATIENTS AND METHODS: From March 2012 to March 2015, eighty patients with intrahepatic cholestasis of pregnancy (ICP) were selected and divided into two groups: the distressed group (n = 31) and non-distressed group (n = 49). We compared the two groups for differences in MDA, SOD, NO level, GSH level, venous blood and total bile acid level. The relevance of the oxidation-reduction system indicators and the venous blood and total bile acid levels, as well as the differences in the delivery outcome and fetal distress, were compared between the two groups. RESULTS: The serum MDA level of the distressed group was higher than the non-distressed group while the SOD, NO, and GSH levels were lower than the non-distressed group. All differences were statistically significant (p < 0.05). Both the venous blood and total bile acid levels in the distressed group were higher than the non-distressed group and were statistically significant (p < 0.05). Based on Pearson's analysis, MDA was positively associated with the venous blood and total bile acid levels while SOD, NO and GSH levels were negatively associated with it. All differences were statistically significant (p < 0.05). The death rate of cesarean section and perinatal infant in the distressed group were higher than that of the non-distressed group. The proportion of mild and severe asphyxia was higher than the non-distressed group. However, the neonatal weight of the distressed group was lower. All differences were statistically significant (p < 0.05). CONCLUSIONS: The internal oxidation-reduction system indicators of pregnant patients with intrahepatic cholestasis, which are MDA, SOD, NO and GSH levels, may contribute to the occurrence of fetal distress.

Side population cell level in human breast cancer and factors related to disease-free survival.

UNLABELLED: Side population (SP) cells have stem cell-like properties with a capacity for self-renewal and are resistant to chemotherapy and radiotherapy. Therefore the presence of SP cells in human breast cancer probably has prognostic value. OBJECTIVE: To investigate the characteristics of SP cells and identify the relationship between the SP cells levels and clinico-pathological parameters of the breast tumor and disease-free survival (DFS) in breast cancer patients. MATERIALS AND METHODS: A total of 122 eligible breast cancer patients were consecutively recruited from January 1, 2006 to December 31, 2007 at Yunnan Tumor Hospital. All eligible subjects received conventional treatment and were followed up for seven years. Predictors of recurrence and/or metastasis and DFS were analyzed using Cox regression analysis. Human breast cancer cells were also obtained from fresh human breast cancer tissue and cultured by the nucleic acid dye Hoechst33342 with Verapami. Flow cytometry (FCM) was employed to isolate the cells of SP and non-SP types. RESULTS: In this study, SP cells were identified using flow cytometric analysis with Hoechst 33342 dye efflux. Adjusted for age, tumor size, lymph nodal status, histological grade, the Cox model showed a higher risk of recurrence and/or metastasis positively associated with the SP cell level (1.75, 1.02-2.98), as well as with axillary lymph node metastasis (2.99, 1.76-5.09), pathology invasiveness type (1.7, 1.14-2.55), and tumor volume doubling time (TVDT) (1.54, 1.01-2.36). CONCLUSIONS: The SP cell level is independently associated with tumor progression and clinical outcome after controlling for other pathological factors. The axillary lymph node status, TVDT and the status of non-invasive or invasive tumor independently predict the prognosis of breast cancer.