Animals ; Brain-Derived Neurotrophic Factor ; Depression/drug therapy* ; Fluoxetine ; Mice ; Stress, Psychological ; Transcranial Magnetic Stimulation

OBJECTIVETo investigate the effect of osteopontin silencing on the invasion and apoptosis of U251 cells.

METHODSThe invasion, apoptosis and levels of uPA, MMP-2 and MMP-9 were determined by invasion assay, flow cytometry, Western blot and real-time fluorescence quantitative PCR respectively.

RESULTSOsteopontin small interference RNA (siRNA) inhibited osteopontin expression and cell invasion, promoted apoptosis in U251 cells. In addition, the expression of Bcl-2, uPA, MMP-2 and MMP-9 was decreased, while Bax level was elevated.

CONCLUSIONOsteopontin siRNA can inhibit U251 cells invasion via the down-regulation of uPA, MMP-2 and MMP-9 levels, and promote apoptosis through induction of Bax expression and inhibition of Bcl 2 level. It suggests that osteopontin plays an important role in human glioma progression.

Apoptosis ; Cell Line, Tumor ; Gene Expression Regulation, Neoplastic ; Gene Silencing ; Gene Transfer Techniques ; Genetic Vectors ; genetics ; metabolism ; Glioma ; genetics ; metabolism ; pathology ; physiopathology ; Humans ; Lentivirus ; genetics ; metabolism ; Neoplasm Invasiveness ; Osteopontin ; genetics ; metabolism ; RNA, Small Interfering ; genetics

OBJECTIVETo investigate the role of bone morphogenetic protein 4 (BMP4) on the proliferation and apoptosis in glioma stem cells.

METHODSStem cells were isolated from a human glioma cell line U87 by using vincristine and characterized by immunofluorescence assay. Proliferation and apoptosis were determined by soft agar colony assay and flow cytometry; Cyclin D1, Bcl-2 and Bax were detected by Western blot analysis.

RESULTSBMP4 inhibited cell proliferation and promoted apoptosis in U87 glioma stem cells. Moreover, Bcl-2 and Cyclin D1 expression were decreased by BMP4, while Bax level was elevated.

CONCLUSIONBMP4 can inhibit U87 glioma stem cells proliferation through downregulating Cyclin D1 level, and promote apoptosis through induction of Bax expression and inhibition of Bcl-2 level. It suggests that BMP4 plays an important role in human glioma stem cell biology.

Apoptosis ; Bone Morphogenetic Protein 4 ; genetics ; metabolism ; Cell Line, Tumor ; Cell Proliferation ; Cyclin D1 ; genetics ; metabolism ; Gene Expression Regulation, Neoplastic ; Glioma ; genetics ; metabolism ; physiopathology ; Humans ; Neoplastic Stem Cells ; cytology ; metabolism ; Proto-Oncogene Proteins c-bcl-2 ; genetics ; metabolism

The aim of study was to investigate the expression of CD36 in leukemia cells and to explore its significance in diagnosis and differential diagnosis for leukemia in patients. Blood samples from 133 cases of leukemias were analyzed by CD45/SSC double parameters and multi-color flow cytometry in order to determine the CD36 and other leukocyte differentiation antigens. The results show that the CD36 positive rate was 21.8% (29/133) in 133 cases of leukemia, 41.9% (26/62) in 62 cases of AML (acute myeloid leukemia), and none of the 54 cases of lymphocytic leukemia was positive for this antigen. The positive rate of CD36 in M(4) (8/10), M(5) (12/12) and M(6) (3/3) was significantly higher than that in M(1) (0/9), M(2) (3/12), M(3) (0/16) (all P < 0.001). The percent of positive cells of CD36 in M(5a) was significantly higher than in M(5b) (P = 0.001). A significantly negative regression was found between CD36 and CD117 in AML (r = -0.751, P = 0.005). And a significantly positive regression was found between CD36 and CD14 in M(4) and M(5b) (r = 0.870, P = 0.011). In monocyte lineage involved leukemia (MLIL), the positive rate of CD36 (92.6%, 25/27) was significantly higher than that of CD14 (48.1%, 13/27)(P = 0.001). None of the 7 cases with M(5a) was positive for CD14, but 4 of 5 cases of M(5b) were positive. The positive rate of CD117 in M(5a) was significantly higher than that of in M(5b)(P = 0.01). The positive rate of CD34 in M(5) was low (33.3%, 4/12). It is concluded that the combination of CD36 with lymphoid and myeloid antigens is helpful to the diagnosis and differential diagnosis of lymphoid, myeloid and MLIL. The positive rate of CD36 is higher than that of CD14 in MLIL.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; CD36 Antigens ; analysis ; Child ; Child, Preschool ; Female ; Flow Cytometry ; methods ; Humans ; Immunophenotyping ; Infant ; Leukemia, Monocytic, Acute ; immunology ; Leukemia, Myeloid, Acute ; immunology ; Lipopolysaccharide Receptors ; analysis ; Male ; Middle Aged ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; immunology ; Proto-Oncogene Proteins c-kit ; analysis

Objective To establish the surveillance and warning index system corresponnding with the epidemic characteristics of tuberculosis,in China.Methods Literature review and expert meeting were conducted to formulate the preliminary index system frame.Delphi method was used for screening the index and determining the weight of each index.Results Two-round Delphi consultations were performed.The activity coefficients were 87.0％,90.0％ respectively,with means of authority coefficient as 0.850 ± 0.055 and 0.917 ± 0.017,respectively.Mean scores of the index were 7.063 ± 1.435,8.156 ± 0.611 respectively,with the means of coefficient of variation as 0.352 ±0.161 and 0.170 ± 0.057 respectively.The harmony coefficients were 0.322 (x2=499.472,P＜0.05)and 0.393 (x2=241.126,P＜0.05) respectively.After the two-round consultation,the tuberculosis monitoring and warning index system was developed,including 4 first-class indicators,9 second-class indicators and 48 third- class indicators.Conclusion An index system was established for tuberculosis monitoring and early warning that could provide evidence for tuberculosis prevention and control as well as for the forecasting and warning model of the disease.

BACKGROUNDAcute kidney injury (AKI) has been recognized as a major healthcare problem affecting millions of patients worldwide. However, epidemiologic data concerning AKI in China are still lacking. The objectives of this study were to characterize AKI defined by RIFLE criteria, assess the association with hospital mortality, and evaluate the impact of AKI in the context of other risk factors.

METHODSThis prospective multicenter observational study enrolled 3,063 consecutive patients from 1 July 2009 to 31 August 2009 in 22 ICUs across mainland China. We excluded patients who were admitted for less than 24 hours (n = 1623), younger than 18 years (n = 127), receiving chronic hemodialysis (n = 29), receiving renal transplantation (n = 1) and unknown reasons (n = 28). There were 1255 patients in the final analysis. AKI was diagnosed and classified according to RIFLE criteria.

RESULTSThere were 396 patients (31.6%) who had AKI, with RIFLE maximum class R, I, and F in 126 (10.0%), 91 (7.3%), and 179 (14.3%) patients, respectively. Renal function deteriorated in 206 patients (16.4%). In comparison with non AKI patients, patients in the risk class on ICU admission were more likely to progress to the injury class (odds ratio (OR) 3.564, 95% confidence interval (CI) 1.706 - 7.443, P = 0.001], while patients in the risk class (OR 5.215, 95% CI 2.798-9.719, P < 0.001) and injury class (OR 13.316, 95% CI 7.507-23.622, P < 0.001) had a significantly higher probability of deteriorating into failure class. The adjusted hazard ratios for 90-day mortality were 1.884 for the risk group, 3.401 for the injury group, and 5.306 for the failure group.

CONCLUSIONSThe prevalence of AKI was high among critically ill patients in Chinese ICUs. In comparison with non-AKI patients, patients with RIFLE class R or class I on ICU admission were more susceptibility to progression to class I or class F. The RIFLE criteria were robust and correlated well with clinical deterioration and mortality.

Acute Kidney Injury ; epidemiology ; etiology ; pathology ; Adult ; Aged ; China ; epidemiology ; Female ; Humans ; Intensive Care Units ; statistics & numerical data ; Male ; Middle Aged ; Prospective Studies ; Risk Factors

BACKGROUNDUrine output (UO) is an essential criterion of the Kidney Disease Improving Global Outcomes (KDIGO) definition and classification system for acute kidney injury (AKI), of which the diagnostic value has not been extensively studied. We aimed to determine whether AKI based on KDIGO UO criteria (KDIGOUO) could improve the diagnostic and prognostic accuracy, compared with KDIGO serum creatinine criteria (KDIGOSCr).

METHODSWe conducted a secondary analysis of the database of a previous study conducted by China Critical Care Clinical Trial Group (CCCCTG), which was a 2-month prospective cohort study (July 1, 2009 to August 31, 2009) involving 3063 patients in 22 tertiary Intensive Care Units in Mainland of China. AKI was diagnosed and classified separately based on KDIGOUOand KDIGOSCr. Hospital mortality of patients with more severe AKI classification based on KDIGOUOwas compared with other patients by univariate and multivariate regression analyses.

RESULTSThe prevalence of AKI increased from 52.4% based on KDIGOSCrto 55.4% based on KDIGOSCrcombined with KDIGOUO. KDIGOUOalso resulted in an upgrade of AKI classification in 7.3% of patients, representing those with more severe AKI classification based on KDIGOUO. Compared with non-AKI patients or those with maximum AKI classification by KDIGOSCr, those with maximum AKI classification by KDIGOUOhad a significantly higher hospital mortality of 58.4% (odds ratio [OR]: 7.580, 95% confidence interval [CI]: 4.141-13.873, P< 0.001). In a multivariate logistic regression analysis, AKI based on KDIGOUO (OR: 2.891, 95% CI: 1.964-4.254, P< 0.001), but not based on KDIGOSCr (OR: 1.322, 95% CI: 0.902-1.939, P = 0.152), was an independent risk factor for hospital mortality.

CONCLUSIONUO was a criterion with additional value beyond creatinine criterion for AKI diagnosis and classification, which can help identify a group of patients with high risk of death.

Acute Disease ; mortality ; Aged ; Creatinine ; blood ; Critical Illness ; mortality ; Female ; Hospital Mortality ; Humans ; Kaplan-Meier Estimate ; Kidney Diseases ; blood ; mortality ; pathology ; urine ; Logistic Models ; Male ; Middle Aged ; Prognosis ; Prospective Studies ; Risk Factors

OBJECTIVES: To investigate the incidence of extrauterine growth retardation (EUGR) and its risk factors in very preterm infants (VPIs) during hospitalization in China. METHODS: A prospective multicenter study was performed on the medical data of 2 514 VPIs who were hospitalized in the department of neonatology in 28 hospitals from 7 areas of China between September 2019 and December 2020. According to the presence or absence of EUGR based on the evaluation of body weight at the corrected gestational age of 36 weeks or at discharge, the VPIs were classified to two groups: EUGR group (n=1 189) and non-EUGR (n=1 325). The clinical features were compared between the two groups, and the incidence of EUGR and risk factors for EUGR were examined. RESULTS: The incidence of EUGR was 47.30% (1 189/2 514) evaluated by weight. The multivariate logistic regression analysis showed that higher weight growth velocity after regaining birth weight and higher cumulative calorie intake during the first week of hospitalization were protective factors against EUGR (P<0.05), while small-for-gestational-age birth, prolonged time to the initiation of total enteral feeding, prolonged cumulative fasting time, lower breast milk intake before starting human milk fortifiers, prolonged time to the initiation of full fortified feeding, and moderate-to-severe bronchopulmonary dysplasia were risk factors for EUGR (P<0.05). CONCLUSIONS It is crucial to reduce the incidence of EUGR by achieving total enteral feeding as early as possible, strengthening breastfeeding, increasing calorie intake in the first week after birth, improving the velocity of weight gain, and preventing moderate-severe bronchopulmonary dysplasia in VPIs.
Female ; Fetal Growth Retardation ; Gestational Age ; Hospitalization ; Humans ; Incidence ; Infant ; Infant, Newborn ; Infant, Premature ; Infant, Very Low Birth Weight ; Prospective Studies ; Risk Factors