Objective To explore whether the process of oxidative stress exists in schizophrenia through analyzing changes of levels of malondialdehyde(MDA) and superoxide dismutase(SOD) ,and analyse the influence of age on SOD and MDA .Methods Serum levels of MDA and SOD in the schizophrenia group and healthy control group were detected by using enzyme‐linked immu‐nosorbent assay(ELISA) and were statistically analysed by using t test .Results Compared with the healthy control group ,there was an increase in serum level of MDA and a decrease in serum level of SOD in the schizophrenia group ,and had statistically signifi‐cant differences(P<0 .05) .Moreover ,statistically significant differences were found between subjects in the same age group of the two groups(P<0 .05) .Meanwhile ,serum levels of MDA and SOD were respectively compared in the two groups between different age groups ,it was shown that in the schizophrenia group and healthy control group there were no statistically significant differences of serum levels of MDA and SOD between subjects 50 years old and over and subjects younger than 50 years old(P>0 .05) .Conclu‐sion The process of oxidative stress exits in patients with schizophrenia ,and oxidative stress may be involved in the occurrence and progression of schizophrenia .Patients′age may not be significantly correlated with schizophrenia .

Objective To compare the imaging quality of articular cartilage of the knee with 3D-sampling perfection with applica-tion optimized contrast using different flip angle evolutions (3D-SPACE),3D-true fast imaging with steady-state precession (3D-True FISP)and 2D-fast-spin-echo-proto-density(2D-FSE-PD)sequences.Methods 40 healthy volunteers and 20 patients of knee joints were examined with 3D-SPACE,3D-True FISP and 2D-FSE-PD sequences at 1.5T MRI.Signal-noise ratio (SNR),contrast-to-noise ratio (CNR)and lesion visualization of articular cartilage were compared.Results 3D-SPACE showed the highest SNR of cartilage and CNR of fluid/cartilage among the three sequences (P <0.05).3D-SPACE had the better capability for showing the lev-el I 、level Ⅱcartilage injury comparing with 3D-True FISP,but no significant difference between the cartilage injury at level Ⅲ and level Ⅳ.For all levels of cartilage injury,3D sequence was better than the 2D sequence.Conclusion Compared with the 3D-True FISP sequence and 2D-FSE-PD sequence,3D-SPACE sequence can show the structure of knee and knee cartilage injury better.

This paper is aimed to provide the methods of quality control and bioassay of traditional Chinese medicine injections including bioassay method. Shuanghuanglian freeze-dried powder for injection (SFPI) was chosen as study object. HPLC-ELSD fingerprints of SFPI had been established and the samples were differentiated by similarity calculation. Meanwhile, biological profiles of SFPI on Escherichia coli had been established by microcalorimetry. The similarity values were calculated using the correlation coefficient, based on quantitative thermo-kinetic parameters (T2m, Tj, I%). The results indicated that HPLC-ELSD fingerprints, which showed content changes of chemical components, could not monitor minimal variation of different samples, especially that of biological pollutants, while biological profiles could sensitively detect antibiotic activity alterations of the samples, which were kept under specific conditions. In conclusion, characterized by two-dimension, microcalorimetry could supply thermograms as biological profiles characterized to describe the bioactivity of drugs. This study could clearly demonstrate that the correlative detection was proposed as an efficient strategy for quality control of SFPI, based on HPLC-ELSD fingerprints and biological profiles, which could detect quality fluctuation of samples early and quickly and predict the potential adverse drug events (ADE) for ensuring clinical safety.

In this study, microcalorimetry was adopted to establish a novel method for detecting the hemagglutination process of Radix Isatidis (Banlangen in Chinese, BLG), and to evaluate the hemagglutination activity diversity of BLG from various habitats. The hemagglutination biothermokinetics curves of positive reagent (phytohemagglutinin, PHA) and 8 batches BLG from different regions of the hemagglutination with 20% rabbit erythrocyte were recorded by microcalorimetry, then biothermokinetics parameters were abstracted, the hemagglutination utility of samples were calculated and analyzed by principal component analysis (PCA) and cluster analysis (CA), meanwhile the results were authenticated by micro-plate agglutination. It showed that the hemagglutination was an exothermic reaction, the reaction rate constant (k: 0.039-73.6 min(-1)), maximum reaction power (Pmax: -1 140.2 - 988.2 microW) and reaction enthalpy (Hi: -529.9 - 717.9 microJ) had good linear correlation with BLG extraction concentration (0.2-1.0 g mL(-1), r > 0.97), and PCA showed Pmax (531-1 335 microW) and Ht (585.2-989.2 microJ) could represent the hemagglutination activity diversity of BLG samples, just confirming with the results of micro-plate agglutination (the agglutination dilution was 3-11 respectively). According to the hemagglutination utility, the BLG samples from Good Agriculture Practice (GAP) regions, main producing area and general regions could be clustered correctly; meanwhile, the biothermokinetics curves with perfect distinctive fingerprint and specificity could give out more information for the quality control and evaluation for BLG. In conclusion, the microcalorimetry method established for detecting the hemagglutination activity of BLG samples on rabbit erythrocyte is sensitive and reliable, and could be adopted as an effective technique in detection aggulatination precisely, quantitatively and consecutively; and provide a novel approach for examining and evaluating quality for Chinese herbal medicine with aggulatinative activity such as BLG.

The paper is to report the establishment of a method for quickly evaluating compatibility of Chinese medicines injections. Isothermal titration calorimetry (ITC) was used to evaluate compatibility of Yiqifumai (YQFM) and vitamin C injection (Vc)/5% glucose injection (5% GS). The diversification of Gibbs free energy (deltaG), enthalpy (deltaH) and entropy (deltaS) were used to decide reaction types of colliquefaction procedures of different injections. The reactive profiles were used to determine signs and quantity of heat. And high performance liquid chromatography (HPLC) was used as a supportive method for ITC. Then, feasible binding sites were analyzed based on the information of spatial structures of major compositions. During the colliquefaction procedure of YQFM and Vc, [deltaH] > T[deltaS], so, the reaction is enthalpy-driving. And the reactive profile showed that a big deal of heat was given out during the procedure. Obviously, chemical reactions happened and the major compositions changed. On the other side, the reaction of YQFM mixed with 5% GS was entropy-driving, because [deltaH] < T[deltaS]. The reactive profile showed there was a little heat gave out. So, non-chemical reactions happened, and the major compositions did not change. The conformity existed between the results of ITC and HPLC. ITC could be used to evaluate the compatibility of Chinese medicines injections because of the advantages of ITC, such as real time, fast, sensitive and having more parameters.

OBJECTIVETo determine the effects of Jiji decoction (Traditional Chinese Medicine) on the cognitive function and oxidative stress in mice with vascular dementia (VD) induced by cerebral ischemia/reperfusion.

METHODSThirty-two mice were randomly divided into nonnal group (n = 8), sham group (operation, but no cerebral ischemia/reperfusi6n, n = 8), model group (vascular dementia model induced by cerebral ischemia/reperfusion, n = 8), and Jiji decoction-treated group (vascular dementia model plus treatment with Jiji decoction, n = 8). Fourteen days of treatment after operation, the cognitive behavior was measured in step-through test, spatial probe test and platform test. Afterwards, to assess the levels of oxidative stress, the activity of superoxide dismutase(SOD) and content of malonaldehyde (MDA) in brain of these mice were measured.

RESULTSData from step-through test indicated that the escaping latency of Jiji decoction-treated group was prolonged and the error counts were decreased significantly ( P <0.01) compared with those of model group. Data from spatial probe test indicated that the time of entering darkroom, the time of climbing height and the time of entering bright room in Jiji decoction-treated group were shortened and the counts of climbing height were increased (P < 0.05-0.01) significantly compared with those of model group. Data from platform test showed that the escaping latency of Jiji decoction-treated group was prolonged significantly (P < 0.01) compared with that of model group. Compared with normal and sham group, the activity of SOD was decreased and the content of MDA was increased in model group significantly (P < 0.01). Compared with those of model group, the levels of SOD and MDA in Jiji decoction-treated group were improved significantly (P < 0.01).

CONCLUSIONJiji decoction could improve cognitive function of VD mice. Its mechanism might be related with the inhibition of oxidative stiess in the brain.

Animals ; Brain ; drug effects ; metabolism ; Cerebral Infarction ; physiopathology ; Cognition ; drug effects ; Dementia, Vascular ; drug therapy ; Drugs, Chinese Herbal ; pharmacology ; Malondialdehyde ; metabolism ; Medicine, Chinese Traditional ; Mice ; Oxidative Stress ; drug effects ; Reperfusion Injury ; drug therapy ; Superoxide Dismutase ; metabolism

AIMTo study the protective effect and mechanism of osthol on learning and memory impairment of mice with acute senile model induced by AlCl3.

METHODSAfter s.c. AlCl3 60 mg.kg-1 for 7 d and i.p. osthol 15 and 7.5 mg.kg-1 for 12 d, using step-through test and step-down test, the effect of osthol on learning and memory was observed and the glutathione peroxidase (GSH-PX) activities in blood and superoxide dismutase (SOD) activities in plasma and cerebrum were measured.

RESULTSOsthol 15 and 7.5 mg.kg-1 significantly improved the capability of memory and enhanced the activities of GSH-PX and SOD in AlCl3 treated mice.

CONCLUSIONOsthol shows protective effect on brain memory impairment of mice in acute senile model induced by AlCl3. Perhaps the mechanism is involved in enhancing the activities of GSH-PX and SOD, clearing away the free radical, protecting the brain neuron from the harm of lipoperoxide.

Acute-Phase Reaction ; Aging ; drug effects ; metabolism ; Aluminum Compounds ; pharmacology ; Animals ; Avoidance Learning ; drug effects ; Brain ; enzymology ; Chlorides ; pharmacology ; Cnidium ; chemistry ; Coumarins ; isolation & purification ; pharmacology ; therapeutic use ; Female ; Glutathione Peroxidase ; blood ; Male ; Memory Disorders ; chemically induced ; enzymology ; prevention & control ; Mice ; Plants, Medicinal ; chemistry ; Random Allocation ; Superoxide Dismutase ; metabolism

Adult ; Antigens, CD20 ; metabolism ; Burkitt Lymphoma ; metabolism ; pathology ; Diagnosis, Differential ; Female ; Follow-Up Studies ; Histiocytic Necrotizing Lymphadenitis ; metabolism ; pathology ; Humans ; Lymphatic Diseases ; metabolism ; pathology ; Lymphoma, Large B-Cell, Diffuse ; metabolism ; pathology ; Lymphoma, Large-Cell, Anaplastic ; metabolism ; pathology ; Neprilysin ; metabolism ; Proto-Oncogene Proteins c-bcl-6 ; metabolism ; Receptors, Complement 3d ; metabolism ; Submandibular Gland Diseases ; metabolism ; pathology ; Young Adult

Abstract: Objective　To analyze the serotype distribution, drug resistance rate and drug resistance gene carrying of Streptococcus pneumoniae isolates in hospitalized patients, and evaluate the coverage of the vaccine to the serotype of Streptococcus pneumoniae in this area, so as to provide reference for the rational use of antibiotics in clinic. Methods　A total of 150 strains of non-repetitive Streptococcus pneumoniae isolated from inpatients from January 2015 to December 2019 were collected for serotyping and antimicrobial sensitivity test. The carrying rates of pbp2b, ermB and tetM were detected by PCR. Results　The PCR classification rate of 150 strains of Streptococcus pneumoniae was 93.1%, and the classification rate of capsular swelling test was 100%, and a total of 19 serotypes were divided, mainly 19F and 6B. Children's serotypes were predominantly 19F, 6B, and 15A; adult serotypes were predominantly 19F, 14, and 23F. The coverage rates of the PCV7, PCV10, PCV13 and PPV23 vaccines were 36.8%, 42.1%, 57.9% and 68.4%, respectively. Strains with serotypes of 19F, 6B, 3, and 23F had higher rates of resistance to antimicrobials. The sensitivity of Streptococcus pneumoniae to penicillin was greater than 96.0%. Antimicrobials with significant differences in resistance rates between invasive and non-invasive strains were penicillin, moxifloxacin, and levofloxacin. The percentage of strains carrying both ermB and tetM resistance genes was 96.0%, and the concordance rate between pbp2b, ermB and tetM resistance genes and the resistance phenotype was >98.0%. A total of 10 multi-resistance combinations were detected, with a multi-resistance rate of 62.6%, and the multi-drug resistance pattern of Streptococcus pneumoniae was mainly concentrated in the 19F and 6B serotypes. Conclusion　There are significant age differences in the serotypes of Streptococcus pneumoniae in this area. The vaccine currently used has low coverage in this region and therefore offer limited protection to the population. The drug resistance rates of Streptococcus pneumoniae varied significantly among serotypes. Erythromycin and tetracycline are not recommended for clinical treatment of Streptococcus pneumoniae. Penicillin can still be used as the first choice for clinical treatment of Streptococcus pneumoniae infection.

ObjectiveTo investigate the correlation of polymorphism and loci interaction of nucleic acid binding oligomeric domain-like receptor heat protein domain associated protein 3 (NLRP3) gene and susceptibility to coal workers' pneumoconiosis (CWP) in Xinjiang Region. Methods A total of 109 CWP were selected as the case group, and 69 coal miners with similar age, years of dust exposure and work types were selected as the control group by convenient sampling method. Blood samples of individuals in workers in these two groups were collected, and the genotypes of single nucleotide polymorphism loci, rs1539019, rs4612666, rs4925650 and rs7525979, in the NLRP3 gene were detected using an improved multiplex ligation detection reaction. The optimal genetic model was selected based on the Akaike information criterion. Results The results of unconditional logistic regression analysis showed that individuals with the C allele of rs1539019 or rs4612666 had a higher risk of CWP than those with the A or T allele (all P<0.05), and individuals with the AA genotype of rs1539019 or the TT genotype of rs4612666 had a lower risk of CWP than those with the CC genotype (all P<0.05), after adjusting for age, years of work, alcohol, and smoking. The optimal genetic models for rs1539019 and rs4612666 were the recessive model and the additive model, respectively, and these differences were associated with the susceptibility to CWP at the Bonferroni-corrected level (all P<0.05). No correlation was found between rs4925650 and rs7525979 and the susceptibility to CWP (all P>0.05). In the smoking population, the rs1539019 co-dominant model, recessive model, and additive model were associated with a decreased risk of CWP (all P<0.05). The rs4612666 co-dominant model, dominant model and additive model were associated with an increased risk of CWP (all P<0.05), with the optimal genetic models being the recessive model and the additive model among smokers. The rs1539019 and rs4612666 were not found to be associated with the increased risk of CWP in non-smokers (all P>0.05). The rs4612666 dominant model and additive model were associated with an increased risk of CWP (all P<0.05), and the rs4925650 recessive model and over-dominant model were associated with a decreased and increased risk of developing CWP (all P<0.05), with the optimal genetic models being the dominant model and the over-dominant model in drinkers. The rs1539019 co-dominant model, dominant model, recessive model, and additive model were associated with a decreased risk of developing CWP (all P<0.05), and the rs4612666 co-dominant model, recessive model, and additive model were associated with an increased risk of developing CWP (all P<0.05), with the optimal genetic models being the additive model and the recessive model in non-drinkers. The result of haplotype analysis showed that the ACAC and ACGC haplotypes were associated with a reduced risk of CWP (all P<0.05). Conclusion The rs1539019 and rs4612666 loci of the NLRP3 gene are associated with susceptibility to CWP. This study provides clues for further research on the risk of CWP in coal workers.