Adolescent ; Adult ; Child ; Child, Preschool ; China ; epidemiology ; Disease Outbreaks ; Female ; Humans ; Infant ; Measles ; epidemiology ; Young Adult

Objective:To investigate the cardiovascular protection effect of cilazapril in hemodialystic patients|(HD). Methods:Thirty HD with hypertension and left ventricular hypertrophy patients were randomly divided into two groups.Group A(n=20) cilazapril 2.5 mg～5 mg,group B(n=10) as control. After six mouths,the left ventricular mass and function were monitored by color Doppler cardiography. Results:BP was decreased in both group.LVDd,IVS,LVPWD and LVMI were decreased in cilazapril group. Conclusion:Cilazapril is not only effective and safe in treatment of hypertension,reversed the ventricular hypertrophy and improved the diastolic function in HD patients also.

Adolescent ; Adult ; Antibodies, Viral ; blood ; Child ; Child, Preschool ; China ; epidemiology ; Humans ; Infant ; Infant, Newborn ; Mumps ; epidemiology ; Rubella ; epidemiology ; Seroepidemiologic Studies ; Transients and Migrants ; Young Adult

Objective:To study the role of protein kinase C-δin the Dectin-1-Src-Syk-mediated killing of Candida albicans by macrophages and investigate the molecular mechanism of antifungal innate immunity .Methods:Cell surface receptors were accessed by Flow Cytometry.Mouse bone marrow derived macrophages were pre-incubated with different protein kinase inhibitors and then stimulated with C.albicans.The phosphorylation of related proteins was determined by Western blot.The ROS production,phagocytosis and killing of C.albicans by macrophages were measured.Results:Either Src or Syk inhibitor reduced C.albicans induced PKC-δphos-phorylation.PKC-δinhibitor Rottlerin reduced p40phox phosphorylation,ROS production and killing of C.albicans but had no effect on the phagocytosis of C.albicans by macrophages.Conclusion:PKC-δinhibitor Rottlerin reduced the killing of Candida albicans by mac-rophages through the inhibition of NADPH complex activation and ROS production ,suggesting that PKC-δplays an important role in an-tifungal innate immunity.

Chickenpox ; prevention & control ; Chickenpox Vaccine ; therapeutic use ; Child ; China ; epidemiology ; Communicable Disease Control ; methods ; Disease Outbreaks ; prevention & control ; Female ; Humans ; Male ; Schools ; Students

OBJECTIVETo study the influences of carbon disulfide (CS2) exposureon fatty acid metabolism in apolipoprotein E (ApoE) knockout mice and C57BL/6J mice.

METHODSTwenty-four male ApoE knockout mice were randomly and equally divided into four groups: a CS2-exposed normal diet group, a CS2-unexposed normal diet group, a CS2-exposed high-fat diet group, and a CS2-unexposed high-fat diet group. Twenty-four C57BL/6J male mice were divided into four groups in the same way. The CS2-exposed groups were exposed to CS2 (1 g/m³) by static inhalation for 5 hours a day, 5 days a week. After two weeks, the whole blood of mice was collected. Methyl ester derivatization of fatty acids was performed using an acid-catalyzed method. Fatty acid contents before and after exposure were compared by gas chromatography-mass spectroscopy.

RESULTSThere were significant differences in fatty acid contents of mice between the four groups. For the C57BL/6J mice, the arachidic acid contents in the CS2-exposed high-fat diet group were significantly lower than those in the CS2-unexposed high-fat diet group (P = 0.0450). For the ApoE knockout mice, the arachidonic acid contents in the CS2-exposed normal diet group were significantly lower than those in the CS2-unexposed control diet group (P = 0.0452). For the ApoE knockout mice, the γ-linolenic acid contents in the CS2-exposed high-fat diet group were significantly higher than those in the unexposed high-fat diet group (P = 0.0447).

CONCLUSIONExposure to CS2 can induce fatty acid metabolism disorder in mice, indicating that CS2 may increase the risk of atherosclerosis and other cardiovascular diseases.

Animals ; Apolipoproteins E ; drug effects ; Atherosclerosis ; Carbon Disulfide ; toxicity ; Diet, High-Fat ; Gas Chromatography-Mass Spectrometry ; Lipid Metabolism ; drug effects ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Risk Factors

Objective: To establish a method for rapid determination of bongkrekic acid (BA) in plasma by high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Methods: In November 2020, plasma samples were extracted by methanol and acetonitrile (1∶1) and purified directly. The samples were separated by C18 column. Gradient elution was carried out with 5 mmol/L ammonium acetate water acetonitrile solution as mobile phase. Under the optimized instrument conditions, the electrospray ionization multiple reaction monitoring (MRM) mode was used, and the external standard method was used for quantitative analysis. Results: The linear relationship of BA in plasma was good in the concentration range of 2-100 μg/L, the correlation coefficient was 0.9998, the average recovery was 83.7%-112.0%, the relative standard deviation within and between batches was less than 10%, the detection limit of the method was 0.7 μg/L and the lower limit of quantification was 2.0 μg/L. Conclusion: The method is simple, rapid, accurate and sensitive, and can meet the requirements for the determination of BA in blood samples of poisoning patients.
Bongkrekic Acid ; Chromatography, High Pressure Liquid ; Humans ; Solid Phase Extraction ; Tandem Mass Spectrometry

Objective: To establish a method for the rapid determination of acetaminophen (APAP) in human plasma by LC-MS/MS. Methods: The plasma samples were extracted by methanol and acetonitrile (1: 1) and purified directly. C(18) column was used for sample separation. The mobile phase were methanol (5 mmol/L ammonium acetate) and water (5 mmol/L ammonium acetate). Samples were analyzed by LC MS/MS with the electrospray ionization multi reaction monitoring (MRM) mode. Results: The calibration curves of APAP was linear in the concentration range of 0~10 mg/L, the correlation coefficient (r) was greater than 0.999 0. The relative standard deviation within and between batches was less than 10%. The recovery rate were 96.81%~101.7%. The detection limit of the method was 0.1 μg/L and the lower limit of quantification was 0.3 μg/L. Conclusion: This method has strong specificity, high sensitivity and reliable determination results. It is suitable for the rapid analysis of clinical plasma samples.
Humans ; Chromatography, Liquid/methods* ; Acetaminophen ; Tandem Mass Spectrometry/methods* ; Methanol ; Chromatography, High Pressure Liquid/methods*

Humans ; Microarray Analysis ; Multiple Myeloma/genetics* ; RNA, Long Noncoding

Objective: To explore the effect of interfering insulin-like growth factors-1 receptors (IGF-1R) by small interfering RNA (siRNA) on cell cycle and apoptosis of hypoxic hepatocellular carcinoma HepG2 cells. Methods: The hypoxic hepatocellular carcinoma model was established via cobalt chloride treatment. Three siRNAs targeting IGF1R gene and one negative control siRNA were designed and synthesized. They were transfected into hypoxic HepG2 cells, and 24 h later, the transfection efficiency was detected by fluorescent microscopy. The protein expression of IFG-1R was detected with Western blotting (WB) to screen the siRNA with highest transfection efficacy. The selected siRNA was used to transfect hypoxic HepG2 cells. The proliferation of hypoxic HepG2 cells was determined by MTT assay. Cell cycle distribution and apoptosis were analyzed by Flow cytometry. WB was performed to detect the proteinexpressionsofCDK1,CDK2andCaspase-3inHepG2cells. Results: The hypoxic hepatocellular carcinoma model was successfully established. IGF-1R-siRNA-2 showed the most effective interference efficiency and the most significant knockdown of IGF-1R (all P<0.01). The proliferation of HepG2 cells transfected with IGF-1R siRNA-2 was significantly suppressed (P<0.05 or P<0.01), the cell cycle was blocked at G0/G1 phase (P<0.05), and the apoptosis rate was increased up to (25.3±1.3)% P<0.01). In the meanwhile, the expressions of CDK1 and CDK2 were decreased and the expression of Caspase-3 was increased in hypoxic HepG2 cells after IGF-1R knockdown (P<0.05). Conclusion: Interfering IGF-1R by siRNA inhibits the malignant biological behaviors of hypoxic HepG2 cells via regulating cell cycle and apoptosis-related proteins. IGF-1R may be a potential target for the treatment of HCC.