1.Changes of plasma mitochondrial coupling factor -6 and its significance in neonatal sepsis
Yu LIU ; Xirong GAO ; Shuangjie LI
Journal of Chinese Physician 2016;(z1):30-32
Objective To investigate the variation of plasma mitochondrial coupling factor -6 and explore the significance in neonatal sepsis.Methods The study of 88 cases of pediatric inpatients in our hospital were divided into non-sepsis group (46 cases)and sepsis group (42 cases).CF-6 concentration in venous blood of all study subjects was determined by enzyme linked immunosorbent assay (ELISA).Re-sults The plasma CF-6 concentrations in peripheral venous blood of the patients with sepsis were signifi-cantly higher than those in non sepsis group(107.65 ±50.38)pg/ml vs (38.96 ±29.87)pg/ml,The con-centrations of CF-6 in the infected group were higher than those in the normal control group(P <0.05). Conclusions The concentration of mitochondrial coupling factor -6 in neonatal sepsis was significantly higher,and has a certain pathological and physiological significance in the pathogenesis of neonatal sepsis.
2.Correlation between hypertensive disorder complicating pregnancy with homocysteine,DˉD and hsˉCRP
Xirong LI ; Shaoya HUANG ; Shifeng ZHOU
International Journal of Laboratory Medicine 2014;(24):3341-3342
Objective To investigate the relationship between hypertensive disorder complicating pregnancy(HDCP)with homo-cysteine,D-D and high sensitive C-reactive protein(hs-CRP).Methods 80 HDCP women included 38 cases of gestational hyperten-sion,26 cases of mild preeclampsia and 16 cases of severe preeclampsias,and at the same time 36 normal late-term pregnant women and 30 non-pregnant normal women were selected as the control group.The plasma Hcy was determined by the enzymatic cycling assay,D-D was determined by the latex immune turbidimetry and hs-CRP was determined by the nephelometry immuno assay,re-spectively.Results The plasma Hcy,D-D and hs-CRP levels in the HDCP group were significantly increased compared with the normal non-pregnancy women group and the normal late-term pregnancy women group controls and showed the increasing trend with the aggravation of disease condition,the differences had the statistical significance(P <0.01).Conclusion Timely monitoring the plasma Hcy,D-D and hs-CRP levels can effective conduct the adverse pregnancy prediction,thus timely takes the medication in-tervention for correcting the occurrence and development of the disease condition,and provides the significant reference indexes for evaluating the change and prognosis of the disease condition in clinic.
3.The role of survivin on the apoptosis of lung cancer cell line induced by chemotherapeutical drugs
Xiaoyang WANG ; Zhenxiang ZHANG ; Xirong LI ;
Chinese Pharmacological Bulletin 1987;0(02):-
AIM To study the role of survivin on the apoptosis of lung cancer cell line induced bycisplatin (DDP) and etoposide (VP16). METHODS The lung adenocarcinoma cell line A549 was chosen in this experiment. The inhibitory effects of chemotherapeutical drugs on A549 cell line were assayed with MTT test. Cultured cells was divided into 3 groups: DDP, VP16 and control. Both DDP and VP16 group were divided into high concentration group and low concentration group, respectively. Expression of survivin gene were detected by reverse transcriptase PCR. Apoptosis was deterinined by flow cytometry. RESULTS Both DDP and VP16 obviously inhibited the lung cancer cell growth with dose and time dependent. Apoptosis and inhibitory rate of survivin gene expression induced by chemotherapeutical drugs was higher than that of control group. The effects also were time dependent. CONCLUSION The inhibition of survivin gene expression may play a critical role on the lung cancer cell apoptosis induced by DDP and VP16.
4.Combined detection of BNP and CA125 for the differential diagnosis of dyspnea
Xirong LI ; Xiaohua ZHANG ; Chunlan LI ; Meiyan YANG
International Journal of Laboratory Medicine 2015;(10):1379-1380
Objective To explore the combined detection of B‐type natriuretic peptide (BNP) and glycosylated antigen 125 (CA125) in differential diagnosis of dyspnea .Methods BNP and CA125 were detected and compared among 106 cases with cardiac dyspnea ,56 cases with pulmonary dyspnea and 60 healthy subjects .Results BNP and CA125 levels of dyspnea patients were higher than healthy subjects ,and those of cardiac dyspnea patients were higher than pulmonary dyspnea patients (P<0 .05) .With the ag‐gravation of heart failure ,BNP and CA125 levels gradually increased .Combined detection of BNP and CA125 were with higher diag‐nostic sensitivity and specificity (P<0 .05) .After treatment ,BNP and CA125 levels significantly decreased (P<0 .05) .Conclusion Combined detection of BNP and CA125 could be with high specificity and sensitivity ,helpful for identifying cardiac or pulmonary dyspnea and dynamic observation of the disease .
5.Investigation on clinical significance of using Astragalus injection combined with sub-hibernation to patients with severe craniocerebral injury
Zhigang LI ; Xirong JI ; Taizu ZHENG ; Yinjun ZHANG ; Zhenchen LI
Chinese Journal of Integrated Traditional and Western Medicine in Intensive and Critical Care 2017;24(4):343-345
Objective To observe the clinical therapeutic effect of Astragalus injection combined with sub-hibernation therapy for treatment of patients with severe craniocerebral injury.Methods A retrospective research method was conducted, and 89 cases with severe craniocerebral injury admitted to the Department of Critical Care Medicine of the First People Hospital of Baiyin in Gansu Province from January 2010 to December 2016 were enrolled. Astragalus injection combined with sub-hibernation was applied for treatment of 45 patients in the observation group, and for another 44 cases assigned in the control group, simply conventional treatment was used. The Glasgow coma score (GCS), coma time, ratio of cripple, mortality, incidences of pulmonary infection and urinary tract infection were compared between the two groups.Results After treatment, GCS scores were significantly higher than those before treatment in both groups, but the degree of increase was more marked on the 30 days after treatment in the observation group than that in the control group (13.15±2.53 vs. 8.79±1.59,P < 0.05). Compared with the control group, coma time was obviously shorter (days: 5.79±1.89 vs. 13.65±2.73), ratio of cripple [13.33% (6/45) vs. 22.73% (10/44)] and mortality [17.78% (8/45) vs.31.82% (14/44)] were significantly lower in observation group (allP < 0.05); the incidences of pulmonary infection [22.44% (11/45) vs. 31.82% (14/44)] and urinary tract infection [28.89% (13/45) vs. 36.36% (16/44)] were lower in the observation group, but the differences between the two groups were not statistically significant (bothP > 0.05).Conclusions The treatment of Astragalus injection combined with sub-hibernation treatment can significantly improve the coma degree, shorten the time of coma, reduce the mortality and disability rate of patients with severe craniocerebral injury.
6.Effect of p38MAPK inhibition on receptor activator of nuclear factor-κB ligand and osteoprotegerin expressions in osteoblasts
Ruixia LI ; Xirong XIAO ; Chao GU ; Yan XU ; Bin LI
Fudan University Journal of Medical Sciences 2010;37(1):39-42
Objective To investigate the role of p38MAPK in the differentiation of murine osteoblasts, and to observe the expressions of receptor activator of nuclear factor-κB ligand (RANKL) and osteoprotegerin (OPG). Methods The calvarial osteoblasts of newborn BALB/c mice were cultured in MEM medium containing 10% NCS. Raloxifene (10~(-7) mol/L) and 17β-estradiol (10~(-8) mol/L) were added respectively when cells reached 70%-80% confluence combined with or without 5 μmol/L SB202190, an inhibitor of p38MAPK. The osteoblasts alkaline phosphatase activity assays were performed 72 hours later using PNPP method, and mRNA levels of alkaliphosphatase (ALP), OPG and RANKL were determined by RT-PCR. Results 17β-estradiol and raloxifene increased ALP activity and ALP mRNA level in osteoblasts in vitro which were blocked by p38MAPK inhibitor.The mRNA levels of RANKL and OPG were up-regulated by 17β-estradiol and raloxifene while the ratio of OPG/RANKL kept constant. SB202190 (5 μmol/L) inhibited the highly expressed RANKL and OPG in osteoblasts, and obviously decreased the ratio of OPG/RANKL. Conclusions p38MAPK inhibition blocked the differentiation of osteoblasts and decreased the up-regulated OPG and RANKL expressions in osteoblasts significantly (P<0.05).
7.Changes and clinical significances of mitochondrial coupling factor 6 and cytochrome C in neonatal sepsis
Yu LIU ; Yunqin WU ; Yan ZHUANG ; Xirong GAO ; Shuangjie LI
Chinese Pediatric Emergency Medicine 2017;24(7):536-540
Objective To evaluate the levels of plasma coupling factor 6(CF6) and cytochrome C(Cyt-c) in neonatal sepsis,and to explore the clinical significance in neonatal sepsis.Methods A total of 88 neonates admitted to Hunan Children's Hospital from January 2015 to April 2015 were collected.Neonates were divided into non-sepsis group(n=42) and sepsis group(n=46).According to the severity of infection,the non-sepsis group was further divided into non-infection group(n=20) and common infection group(n=22);the sepsis group was further divided into general sepsis group (31 cases,no organ failure) and severe sepsis group (15 cases,combined with multiple organ failure).Femoral venous blood was collected in all patients before the use of antibiotics after admission.The levels of Cyt-c and CF6 in plasma were measured by ELISA,and the levels of C-reactive protein(CRP),procalcitonin (PCT) were measured.The changes of CF6 and Cyt-c between these groups were compared,and the sensitivity and specificity with the traditional sepsis index (CRP,PCT) were analyzed.The correlation between the levels of CF6,Cyt-c and neonatal critical illness score was analyzed.Results (1)In sepsis group,the levels of CF6 and Cyt-c[(109.7±8.9)pg/ml and (44.5±4.9)ng/ml] were significantly higher than those in the non-sepsis group[(46.3±6.0)pg/ml,(31.8±6.7)ng/ml,P<0.01,respectively].(2) In the non-infection group,common infection group,general sepsis group and severe sepsis group,the levels of CF6 were (32.1±8.9)pg/ml,(59.3±7.2)pg/ml,(79.3±5.9)pg/ml,and (172.6±6.1)pg/ml,respectively;the levels of Cyt-c were (29.3±8.6)ng/ml,(35.4±4.1) ng/ml,(43.1±5.9) ng/ml,and (44.5±5.9)ng/ml,respectively.The differences between these groups were significant(P<0.01).(3)The receiver operating characteristic curve showed that the sensitivity and specificity of CF6 were 0.761,0.732,and the Cyt-c were 0.739,0.714.(4)Cyt-C and CF6 were negatively correlated with the neonatal critical illness score(r=-0.599,P<0.001;r=-0.337,P<0.01).Conclusion The levels of CF6 and Cyt-c increase in neonatal sepsis.The damage of mitochondria may be one of the pathological mechanisms in neonatal sepsis.The levels of CF6 and Cyt-c were closely related to the severity of neonatal sepsis.
8.The clinical observation to the consociation treatment that losartan potassium combined with enalapril used in treating Ⅳ phase diabetic nephropathy
Xiaotao JIA ; Kun LI ; Xirong YANG ; Xianying LU
Chinese Journal of Postgraduates of Medicine 2008;31(9):16-18
Objective To observe the curative effect that losartan potassium combined with enalapril used in treating Ⅳ phase diabetic nephropathy(DN). Methods Divided 74 Ⅳ phase DN suffers into 3 groups randomly.Losartan group:taken losartan potassium lablets 100 mg once every day orally,enalapril group:taken enalapril tablets 10 mg once every day orally,consociation group:taken the two drugs above ai one time with the same dosage.The treatment in the 3 groups were all above 3 years.monitoring the 24-hour albuminuria and SCr back and forth the treatment.Results It worthed statistics meaning that the 24-hour albuminuria in the 3 groups all declined(P<0.05).The effect of consociation group did better(P<O.01).In term of SCr,it declined in the consociation group worthed statisties meaning only.Conclusion The consociation application with losartan potassium and enalapril can control the proteinuria of Ⅳ phage DN suffers efficiently as well as defer process of kidney diseases.
9.Establishment and performance evaluation of the quantitative detection for procalcitonin based on fluorescence immunochromatography
Qi FANG ; Xirong HUANG ; Kai LI ; Shixing TANG ; Jihua WANG
Chinese Journal of Laboratory Medicine 2012;(12):1102-1107
Objective To develop a quick quantitative detecting method for point of care testing (POCT) of human serum procalcitonin (PCT) by fluorescence immunochromatographic technology.Methods Applying a double-antibody sandwich immunofluorescent assay (one antibody coated on the nitrocellulose membrane and the other antibody labeled with fluorescent micropaticles) to develop a PCT quantitative detecting kit by immunochromatography technology.The kit was used to test PCT in 472 serum samples from suspected bacterial infection patients of Guangzhou Red Cross Hospital,including 240 male and 232 female patients.The methodology and diagnostic performance were evaluated in the aspects of linearity,precision,accuracy,specificity,stability experiments and comparison with foreign PCT detecting kits.Results The report range of the PCT quantitative diagnostic kit was 0.1-125.0 μg/L The coefficient of variation (CV)values of repeat 20 tests for low,median,and high concentration control samples respectively were all less than 15% and bias can be acceptable (P > 0.05).Common interfering substances in human serum specimens such as bilirubin (2.0 g/L),triglyceride (30.0 g/L) and cholesterol (15.0 g/L) were found no significant affect on quantitative detection of PCT.The shelf time of the PCT diagnostic kit should be longer than 12 months as the relative deviation of detected concentrations of 0.5,1.0,22.0,65.0 μg/L PCTcontrol sample can be controlled less than 20% within 14 months.Considering VIDAS BRAHMS PCT to be the standard quantitative test for PCT,472 serum samples were detected by both our kit and the control VIDAS BRAHMS PCT kit simultaneously,which showed high correlation (YVIDAS =0.180 + 1.006Xwondfo,R2 =0.988,P < 0.01) and low deviation (Z =-1.6,P > 0.05) without statistic significance between two methods.And the results of these two diagnostic kits showed good consistency as the area under curve of the receiver operating characteristic (ROC) of Wondfo-PCT at the three cut-off values (0.5,2.0,10.0 μg/L)were 0.997,0.994,0.998 respectively,P < 0.01,using diagnostic result of the control product as standard.Kappa values were 0.899,0.905,0.973 respectively.Conclusions The method of quantitative detection of PCT by fluorescence immunochromatography for POCT was established in this study.All the observed indicators reached the clinical diagnostic requirements and can be applied for the quick detection of clinical human serum PCT.
10.Clinical characteristics of fungemia in premature infants
Shuting CHANG ; Weiqing HUANG ; Xinhui LIU ; Qiang LI ; Jinxia MA ; Zhiming YANG ; Xirong GAO
Chinese Journal of Infection Control 2017;16(9):829-832
Objective To realize the clinical characteristics of fungemia in premature infants.Methods Clinical characteristics of fungemia in premature infants in the intensive care unit of a children''s hospital between January 2011 and December 2015 were analyzed retrospectively, general condition of premature infants, laboratory-related indicators, and antimicrobial susceptibility testing results were compared.Results From January 2011 to December 2015, 42 premature infants with confirmed fungemia were treated in this hospital, 22 (52.38%) of whom were with fungemia caused by Candida albicans(C.albicans), 13 (30.95%) by Candida parapsilosis (C.parapsilosis), 3 by Candida krusei (C.krusei), and 4 by other fungi.Patients were grouped according to the main pathogens causing infection: C.parapsilosis group and C.albicans group.Maternal genitourinary tract infection rate and incidence of fungal meningitis in C.albicans group were both higher than C.parapsilosis group(27.27% vs 7.69%, 27.27% vs 0.00% respectively), peripherally inserted central catheter (PICC) rate in C.albicans group was lower than that in C.parapsilosis group(22.73% vs 69.23%), platelet count in C.parapsilosis group was lower than C.albicans group, differences were all statistically significant (all P<0.05).Conclusion The major fungi causing fungemia in premature infants were C.parapsilosis and C.albicans, maternal reproductive system infection during pregnancy can easily lead to candidemia, premature infants with candidemia are more vulnerable to developing fungal meningitis;PICC is more likely to lead to C.parapsilosis fungemia, and platelet decline is more obvious.