BACKGROUND:Mesenchymal stem cell transplantation has a certain effect on spinal cord injury,but there are still some problems such as low survival rate and poor efficiency of cell transplantation caused by local oxidative stress environment.OBJECTIVE:To explore the protective effect of mangiferin on oxidative stress of bone marrow mesenchymal stem cells.METHODS:Rat bone marrow mesenchymal stem cells at passage 3 were added to mangiferin and incubated for 2 hours according to the gradient of concentration (0,20,40,80,and 160 μmol/L).A serum-free medium containing 400 μmol/L H2O2 was added,and a gradient concentration of mangiferin was added again and cultured for 12 and 24 hours.Rat bone marrow mesenchymal stem cells were cultured as normal control group.Cell survival was detected by MTT assay in each group.The superoxide dismutase,malondialdehyde,and catalase in the culture medium were detected in accordance with the instruction of the kit.RESULTS AND CONCLUSION:Compared with normal control group,cell viability in the H2O2 group was significantly decreased (P<0.01),and the levels of superoxide dismutase and catalase were significantly decreased (P<0.01),while the level of malondialdehyde was significantly increased (P<0.01).Compared with H2O2 group,the survival rate of cells was significantly increased (P<0.01),and the levels of superoxide dismutase and catalase were significantly increased (P<0.01),while the level of malondialdehyde was significantly decreased (P<0.01) in the mangiferin group.Mangiferin showed concentration-dependent antioxidant stress protective activity above 20 μmol/L,and no cytotoxicity below 160 μmol/L.These findings indicate that antioxidant mangiferin can increase the antioxidant activity of bone marrow mesenchymal stem cells and provide a new preconditioning strategy for bone marrow mesenchymal stem cell transplantation.

BACKGROUND:Mesenchymal stem cell transplantation has a certain effect on spinal cord injury,but there are still some problems such as low survival rate and poor efficiency of cell transplantation caused by local oxidative stress environment.OBJECTIVE:To explore the protective effect of mangiferin on oxidative stress of bone marrow mesenchymal stem cells.METHODS:Rat bone marrow mesenchymal stem cells at passage 3 were added to mangiferin and incubated for 2 hours according to the gradient of concentration (0,20,40,80,and 160 μmol/L).A serum-free medium containing 400 μmol/L H2O2 was added,and a gradient concentration of mangiferin was added again and cultured for 12 and 24 hours.Rat bone marrow mesenchymal stem cells were cultured as normal control group.Cell survival was detected by MTT assay in each group.The superoxide dismutase,malondialdehyde,and catalase in the culture medium were detected in accordance with the instruction of the kit.RESULTS AND CONCLUSION:Compared with normal control group,cell viability in the H2O2 group was significantly decreased (P<0.01),and the levels of superoxide dismutase and catalase were significantly decreased (P<0.01),while the level of malondialdehyde was significantly increased (P<0.01).Compared with H2O2 group,the survival rate of cells was significantly increased (P<0.01),and the levels of superoxide dismutase and catalase were significantly increased (P<0.01),while the level of malondialdehyde was significantly decreased (P<0.01) in the mangiferin group.Mangiferin showed concentration-dependent antioxidant stress protective activity above 20 μmol/L,and no cytotoxicity below 160 μmol/L.These findings indicate that antioxidant mangiferin can increase the antioxidant activity of bone marrow mesenchymal stem cells and provide a new preconditioning strategy for bone marrow mesenchymal stem cell transplantation.

Objective:To explore the relationship between smoking and the effect of antipsychotics in schizophrenics.Methods:From July 2017 to July 2019, 142 schizophrenics in the mental health center were treated with olanzapine, and the serum drug concentration and concentration/dose ratio (C/D) were calculated.The age, sex, liver function, smoking, combined medication and other clinical data of the two groups were collected, and the influencing factors of serum olanzapine concentration in schizophrenic patients were analyzed by multivariate logistic regression.Results:Forty-four patients were in the non-compliance group(serum olanzapine concentration <20ng/mL), and 98 patients were in the compliance group(serum olanzapine concentration 20-80ng/mL). In the non-compliance group, males accounted for 72.2%, the average age was (61.6±10.5)years old, smoking history accounted for 90.1%, and serum C/D was (2.5±1.1)ng·mL -1·mg -1·d -1, and in the compliance group, males accounted for 51.0%, the average age was (57.9±9.6)years old, smoking history accounted for 41.8%, and serum C/D was (3.2±1.8)ng·mL -1·mg -1·d -1, and there were statistically significant differences in sex, age, smoking history and serum C/D between the two groups ( t=5.86, χ 2=2.06, χ 2=5.43, t=2.38, all P<0.05). Multivariate logistic regression analysis showed that smoking and CYP1A2 genes were independently related to whether the plasma concentration of olanzapine was up to standard in schizophrenic patients.Compared with non-smokers, previous smoking increased the probability of blood concentration non-compliance by 11% and current smoking by 15% respectively( OR=1.15, P=0.001). And compared with CYP1A2 gene AA, CYP1A2 gene AC reduced the probability of blood concentration non-compliance by 15% and CYP1A2 gene CC by 13%( OR=0.87, P=0.002). Conclusion:There is an independent correlation between smoking and serum C/D value of olanzapine in schizophrenics.Quitting smoking can reduce the probability of substandard blood concentration.

Objective:To investigate the clinical effect of oxcarbazepine combined with ziprasidone in the treatment of acute excitatory agitation in patients with schizophrenia.Methods:From January 2016 to January 2019, a total of 110 patients with acute excitatory schizophrenia who admitted in the Third Hospital of Quzhou were enrolled, and they were divided into observation group and control group according to the random digital table method, with 55 cases in each group.The control group was given ziprasidone capsule, and the observation group was given oxcarbazepine combined with ziprasidone capsule treatment for 4 weeks.The PANSS excitatory agitation factor(PANSS-EC), explicit aggressive behavior scale(MOAS), clinical efficacy rating scale(CGI-SI) score, serum neurocytokines[brain-derived nutritional factors(BDNF), nerve growth factor(NGF), glial-derived neurotrophic factor(GDNF)], homocysteine (Hcy), inflammatory factors[interleukin 1β(IL-1β), interleukin 6(IL-6), interleukin 12(IL-12), tumor necrosis factor α(TNF-α)] before and after treatment and the incidence of adverse reactions were compared between the two groups.Results:After treatment, the PANSS-EC, MOAS, CGI-SI scores, Hcy, IL-1β and TNF-α levels were decreased in the two groups( t=7.829, 14.952, 3.417, 15.511, 18.948, 7.193, 18.453, 24.161, 1.995, 3.378, 3.968, 6.820, all P<0.05), which of the observation group were lower than those of the control group[(15.34±3.56)points vs.(11.08±3.17)points, (5.36±1.68)points vs.(4.15±1.46)points, (5.56±1.21)points vs.(4.18±1.35)points, (14.29±2.42)μmol/L vs.(10.63±2.24)μmol/L, (48.15±15.63)ng/L vs.(42.18±10.51)ng/L, (29.57±8.76)ng/L vs.(23.48±6.76)ng/L]( t=6.628, 4.032, 5.645, 8.231, 2.351, 4.082, all P<0.05), while the BDNF, NGF, GDNF levels were increased( t=6.253, 6.346, 3.513, 13.906, 15.874, 7.507, all P<0.05), which of the observation group were higher than those of the control group[(9.34±1.23)μg/L vs.(11.35±1.34)μg/L, (21.37±2.85)μg/L vs.(26.87±3.21)μg/L, (439.51±56.42)ng/L vs.(489.63±58.15)ng/L], the differences were statistically significant( t=2.351, 3.523, 3.204, all P<0.05). There was no statistically significant difference in the incidence of adverse reactions between the two groups[25.45%(14/55) vs.12.73%(7/55), χ 2=2.884, P=0.089]. Conclusion:Oxcarbazepine combined with ziprasidone in the treatment of acute excitatory patients with schizophrenia can control the clinical symptoms, improve the serum levels of cytokines, Hcy and inflammatory factors, and has high safety.

Objective To explore the psychological process of cognitive impairment in patients with recurrent major depression disorder (MDD). Methods Patients with first-episode (n=30) and recurrent MDD (n=68) in the outpatient department of the First Affiliated Hospital of Zhengzhou University from Sep-tember 2016 to December 2017 were collected and healthy controls(n=30) were collected at the same time. According to HAMD-24 score,the group with recurrent attacks was further divided into recurrent attacks-on-set period (n=35) and recurrent attacks-remission period (n=33). All subjects were tested for cognitive function by MATRICS Consensus Cognitive Battery( MCCB). Results (1) In terms of cognitive function assessment,the scores of information processing speed ( 41. 27 ± 8. 44, 37. 00 ± 11. 68), working memory (40. 53±10. 33,41. 26±9. 37),attention/alertness ( 40. 50± 7. 25,39. 58± 8. 23),word learning ( 38. 83± 8. 39,38. 84±9. 57),visual memory(39. 30±14. 03,37. 57±10. 42),reasoning and problem solving(37. 80± 9. 55,38. 78±8. 66),and social cognition (34. 63± 9. 66) in the first-episode group and the recurrent group were lower than those in the control group ( information processing speed ( 48. 23±7. 63),working memory (50. 57±7. 84),attention/alertness (51. 63±7. 41),word learning (45. 57±9. 55),visual memory (50. 57± 8. 42),reasoning and problem solving (50. 03±9. 87) and social cognition (47. 90±19. 01)) (F=12. 818, 12. 173,26. 166,6. 004,15. 085,18. 331,10. 218,P<0. 05); (2) In working memory and social cognition, the difference was statistically significant in the first-episode group,repeated attacks-episodes(working mem-ory:37. 89±9. 15,social cognition:28. 48± 8. 35) and recurrent group-remission( working memory:44. 85± 8. 32,social cognition:40. 44 ± 11. 36, P=0. 010,0. 001). Further comparisons revealed that the score of working memory in repeated attacks-episodes was lower than that in recurrent group-remission (P=0. 003). the score of social cognition in the first-episode group was higher than that in the recurrent-attack period group (P=0. 038). The score of social cognition in the recurrent group-remission was higher than that in re-current-attack period group (P<0. 01). Conclusion There is cognitive impairment in the first episode and the recurrence MDD. The impairment in the recurrent episode is more serious than that in the first episode of depression. The impairment of social cognitive in the recurrent attacks-episodes is more serious than that in the first-episode of depression.

Objective: To investigate the possible role of tag single nucleotide polymorphisms in cAMP signaling pathway in patients with recurrent major depressive disorder in Chinese Han population. Methods: 1 030 patients with recurrent major depressive disorder according to the DSM-Ⅳ criteria were recruited as case group and 851 age- and gender- matched healthy volunteers were recruited as control group.The sequenom mass spectrometry method was adopted to explore the genotype and allele frequency distributions of tag single nucleotide polymorphisms of cAMP signaling pathway in the two groups. Results: The differences of genotype and allele frequencies of the ADCY7 gene loci rs1064448 and HTR2A gene loci rs17068986 were significant between case group and control group(P<0.05). The difference of the genotype frequencies(492∶423∶112, 356∶401∶91; 538∶392∶94, 414∶371∶61; 24∶165∶838, 3∶150∶694; 219∶468∶337, 139∶418∶237; 153∶481∶393, 115∶446∶286; 53∶286∶688, 25∶296∶524)of the ADCY9 gene loci rs2531995, BDNF gene loci rs10835210, rs7124442, CREB1 gene loci 4675690, rs2551645 and the HTR2A gene loci rs3125 were significant in case-control group(P<0.05); while the rest tagSNPs had no statistical difference in genotype and allele distribution frequencies in case-control group(P>0.05). In gender-specific analyses, the differences of the genotype and allele frequencies of the ADCY7 gene loci rs106448 and CREB1 gene loci rs2551645 were significant in male case-control group(P<0.05); the differences of the genotype(195∶177∶49, 193∶423∶41; 221∶158∶42, 237∶201∶28; 83∶188∶148, 85∶237∶122; 24∶113∶284, 10∶176∶281)of the ADCY9 gene loci rs2531995, BDNF gene loci rs10835210, CREB1 gene loci rs4675690, and HTR2A gene loci rs3125 were significant in male case-control group(P<0.05); while the rest tagSNPs had no statistical difference in genotype and allele distribution frequencies in male case-control group(P>0.05). The differences of the genotype and allele frequencies of the ADCY7 gene loci rs1064448 and HTR2A gene loci rs17068986 were significant in female case-control group(P<0.05). The differences of the genotype(16∶94∶497, 1∶73∶308; 136∶280∶189, 54∶181∶115)of the BDNF gene loci rs7124442 and CREB1 gene loci rs4675690 were significant in female case-control group(P<0.05). The differences of the allele frequencies(840: 372, 493: 267) of the ADCY9 gene loci rs2531995 were significant in female case-control group(P<0.05), while the rest tagSNPs had no statistical difference in genotype and allele distribution frequencies in female case-control group(P>0.05). Conclusion The ADCY7 gene loci rs1064448 and CREB1 gene loci rs4675690 are associated with recurrent major depressive disorder in Chinese Han population.

Objective To explore whether the norepinephrine transporter(NET) gene T-182C and G1287A polymorphisms are involved in the etiology of schizophrenics among the Chinese Han population.Methods 249 schizophrenics(case group) and 309 healthy physical examiners(control group) of the Chinese Han population were collected.Ligase detection reaction was used to detect the genotype distributions and allele frequencies of NET rs2242446 and rs5569 polymorphisms in the two groups.The genotype distributions and allele frequencies of these two single nucleotide polymorphisms (SNPs) were also compared in the case and control groups.Results In the case group,the TF genotype of the NET gene loci rs2242446 was the most,48.6％,and the CC genotype of which was the least,8.4％.In the control group,the CT genotype was the most,47.9％,and the C C genotype was the least,11.3％,the minimum allele frequency was 29.9％.In the case group,the GG genotype of the NET gene loci rs5569 was the most,46.2％,and the CC genotype was the least,9.6％.In the control group,GG genotype was the most,51.5％,and the AA genotype was the least,10.3％,and the minimum allele frequency was 29.4％.No significant differences in the genotype and allele distribution of NET rs2242446 and rs5569 were found in Chinese-Han patients with schizophrenia and control participants (all P＞ 0.05).In gender-specific analyses,similarly,no significant differences were found for rs2242446 and rs5569 genotype and allele distributions in either the male or the female case-control comparisons (all P＞ 0.05).Conclusion The NET rs2242446 and rs5569 polymorphisms are not associated with schizophrenia in Chinese Han population.

ATP-Binding Cassette Transporters ; genetics ; DNA Copy Number Variations ; genetics ; Genetic Predisposition to Disease ; Gout ; genetics ; Humans ; Receptors, IgG ; genetics ; Receptors, Interleukin-17 ; genetics

Objective:To compare the effectiveness between three methods for purifying the immunoglobulin of egg yolk(IgY) which are polyethylene glycol (PEG) method, chloroform extraction method and chloroform / PEG method, and to provide basis for obtaining the batch of IgY.Methods:The inactivated vaccine of Vibrio parahemolyticus (V. parahemolyticus) was prepared and the hens were immunized by multi-point intramuscular injection.The eggs were collected and the IgY was purified by PEG method, chloroform extraction method and chloroform/PEG method.The protein extraction rate, the IgY titer and the purity of the antibody which purified by different methods were detected.Furthermore, the operation process, cost and safety of the three methods were analyzed.Results:The protein contents of the extraction belonging three methods from high to low in turn were chloroform extraction method, chloroform/PEG method, and PEG method.There was no significant difference in the antibody titer between three methods, and the tiler of chloroform extraction method was slightly high.The purities of purified antibody from high to low in turn were PEG method, chloroform/PEG method and chloroform method.The PEG method had better security but relatively lower extraction efficiency and higher cost.The chloroform/PEG method had high extraction efficiency and good antibody purity.Conclusion:The PEG method is suitable for a small amount of extraction in the laboratory.The chloroform/PEG method is appropriate for extracting the high quality IgY in a batch as it has high extraction efficiency and good antibody purity.

Objective To investigate the success rate of fluoroscopy-guided subclavian vein catheter implantation (SVCI) in children with hematologic diseases,to improve the visualization of the position of the catheter head,and to reduce the incidence of procedure-related complications.Methods Fluoroscopyguided SVCI was performed in 183 sick children (aged 1-16 years) with confirmed hematologic disease.The success rate of the catheter implantation,the number of needle puncturing,the operation time,the fluoroscopy time and the occurrence of procedure-related complications were recorded.Results Successful fluoroscopy-guided SVCI was accomplished in all 183 sick children,with a success rate being 100％.Successful SVCI was obtained with ＜3 times of puncturing in 151 sick children (82.5％),with 4-6 times of puncturing in 25 sick children,and with 7-10 times of puncturing in 7 sick children.The catheter tip was successfully positioned at the junction of the superior vena cava with the right atrium in all sick children.The operation time ranged from 5 min to 25 min with a mean of (10.38±4.04) min.The fluoroscopy time varied from 16 seconds to 607 seconds with a mean of (65.46±55.86) seconds.During the procedure,artery was wrongly punctured two times in two sick children.The mean follow-up time was 35 days.Cather-related infection occurred in 2 sick children.No local hematoma at puncture point,nor hemopneumothorax or catheter-related thrombosis occurred.Conclusion Fluoroscopy-guided SVCI has high technical success rate in children with hematologic diseases.For a successful procedure of SVCI,less number of needle puncturing is needed by using this technique.The satisfaction rate for the placement of catheter tip is high and the incidence of complications is low.Therefore,fluoroscopy-guided SVCI is a safe and effective method.