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Objective:To study the effect of eye-open/closed state on 40 Hz auditory steady state response (ASSR) in first-degree relatives of schizophrenia.Methods:Thirty-eight first-degree relatives of schizophrenic patients treated in Shanghai Mental Health Center from March 2010 to October 2011 were selected, and 31 healthy controls were recruited in the same period. All subjects were assessed with schizotypal personality questionnaire (SPQ). The 40 Hz EEG ASSR signals lasting for 3 min under open and closed eyes of all subjects were sequentially collected.Event-related spectrum perturbation (ERSP) and intertribal phase coherence (ITC) were used to evaluate ASSR. SPSS 22.0 software was used for statistical analysis. Two-way analysis of variance was used to compare ITC and ERSP between the two groups under open and closed eyes. Spearman correlation analysis was used to analyze the correlation between each measurement.Results:ITC in group main effect and group×the eye open/closed interaction effect were not significant (both P>0.05), but the main effect of eye-open and eye-closed was significant ( F(1, 67)=10.61, P=0.002). In the healthy control group, the ITC in eye-open state was significantly higher than that in eye-closed state ( P=0.014), and in the first-degree relatives group, the ITC in eye-open state was higher than that in eyes closed state ( P=0.039). ERSP in the main effect of eye-open and eye-closed ( F(1, 67)=0.195, P=0.660), group main effect ( F(1, 67) =0.627, P=0.431), group × the eye-open/closed interaction effect ( F(1, 67)= 1.034, P=0.313) was not significant. Spearman correlation analysis showed that there was no correlation between ERSP (eye open: r=-0.260, P=0.210; eye closed: r=-0.318, P=0.122), ITC (eye open: r=-0.248, P=0.232; eye closed: r=-0.260, P=0.209) and SPQ score in the healthy control group. There was also no correlation between ERSP (eye open: r=-0.387, P=0.226; eye closed: r=-0.363, P=0.238) or ITC (eye open: r=0.126, P=0.485; eye closed: r=0.096, P=0.595) and SPQ score in the first-degree relatives group of schizophrenia. Conclusion:The regulation pattern of 40 Hz ASSR in schizophrenic first-degree relatives is not significantly impaired in the eye-open/closed state, suggesting that the open/closed regulation pattern of 40 Hz ASSR may not be a potential marker for predicting the genetic high-risk prognosis of schizophrenia.
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Objective:To study the use of temporary abdominal closure combined with continuous negative pressure drainage in management of patients with severe pancreatic trauma.Methods:A retrospective analysis was conducted on the data of 33 patients with severe pancreatic trauma treated at the 908th Hospital of the Joint Logistics Support Force of PLA from June 2014 to June 2020. There were 28 males and 5 females, with an average age of 43.1 years. Sixteen patients were treated with temporary abdominal closure combined with continuous negative pressure drainage (the combined group), and 17 patients with direct abdominal closure and traditional drainage (the control group). The body temperature, heart rate, intra-abdominal pressure, length of hospital stay and postoperative complications were compared between groups.Results:There was no significant difference in the preoperative intra-abdominal pressure between the two groups ( P>0.05). The intra-abdominal pressure on the first, second and third postoperative days in the combined group were (11.7±2.6) mmHg (1 mmHg=0.133 kpa), (11.1±3.2) mmHg and (10.2±3.7) mmHg respectively, which were significantly lower than those in the control group of (18.1±5.3) mmHg, (15.6±6.2) mmHg, and (15.0±6.7) mmHg, respectively (all P<0.05). The total in-hospital and ICU stays in the combined group were (29.2±17.8) days and (7.1±3.2) days respectively, which were significantly less than those in the control group of (49.5±26.3) days and (11.8±7.6) days (both P<0.05). The decreases in body temperature and heart rate in the combined group were (-0.1±0.9)℃ and (18.2±17.2) times/min respectively, which were significantly more than those in the control group of (-1.2±0.7)℃ and (-5.9±17.2) times/min respectively (both P<0.05). The incidence of postoperative complication in the combined group was 18.8% (3/16), which was significantly lower than that in the control group of 52.9% (9/17)(χ 2=4.164, P=0.041). Conclusion:Significant advantages were obtained by using temporary abdominal closure combined with continuous negative pressure drainage to treat patients with severe pancreatic trauma. There were significantly lower abdominal pressure, less abdominal complications, and shorter hospital and ICU stays. This treatment is worthy of promotion in management of patients with severe pancreatic trauma.
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Objective@#To explore the correlation between serum high density lipoprotein (HDL) levels and cognitive function in patients with bipolar disorder.@*Methods@#A total of 99 patients with bipolar disorder were enrolled from the inpatient of Suzhou Guangji Hospital.Serum HDL levels were measured by enzymatic colourimetry.Cognitive function was assessed by the repeatable battery for the assessment of neuropsychological status (RBANS). The relationship between serum high density lipoprotein and cognitive function was analyzed by correlation analysis and stepwise multiple regression analysis.@*Results@#Serum HDL levels ((1.39±0.55)mmol/L)were positively correlated with the RBANS total score (68.92±12.48)(r=0.238, P=0.034) and language score(80.59±15.97) (r=0.239, P=0.033) in patients with bipolar disorder.Stepwise multiple regression analysis showed that serum HDL level was the influencing factor of total score of RBANS(β=4.791, t=2.151, P=0.035)and speech function(β=7.363, t=2.247, P=0.027).@*Conclusion@#Serum HDL levels can influence cognitive function, especially speech function in patients with bipolar disorder.
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Objective To explore the correlation between serum high density lipoprotein ( HDL) levels and cognitive function in patients with bipolar disorder. Methods A total of 99 patients with bipolar disorder were enrolled from the inpatient of Suzhou Guangji Hospital. Serum HDL levels were measured by enzymatic colourimetry. Cognitive function was assessed by the repeatable battery for the assessment of neuro-psychological status (RBANS). The relationship between serum high density lipoprotein and cognitive func-tion was analyzed by correlation analysis and stepwise multiple regression analysis. Results Serum HDL lev-els ((1. 39±0. 55) mmol/L) were positively correlated with the RBANS total score (68. 92 ± 12. 48) ( r=0. 238,P=0. 034) and language score(80. 59±15. 97) (r=0. 239,P=0. 033) in patients with bipolar disor-der. Stepwise multiple regression analysis showed that serum HDL level was the influencing factor of total score of RBANS(β=4. 791,t=2. 151,P=0. 035) and speech function(β=7. 363,t=2. 247,P=0. 027). Conclusion Serum HDL levels can influence cognitive function,especially speech function in patients with bipolar disorder.
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Objective To examine the correlation between serum interleukin-6 (IL-6) levels and sustained attention in patients with major depressive disorder (MDD).Methods 30 patients with MDD and 30 healthy controls were enrolled in the case-control study.Serum IL-6 levels in all subjects were assessed by sandwich enzyme-linked immunosorbent assay (ELISA).Sustained attention in all subjects was measured respectively using rapid visual information processing(RVP) task in the Cambridge neuropsychological tests automated battery (CANTAB).Results Serum IL-6 levels in patients with MDD were significantly higher than those in healthy controls after controlling for gender,age,education,smoking,and BMI ((12.03±0.83) pg/ml,(2.77±0.24) pg/ml) (P＜0.01).RVP total misses and RVP mean latency in patients with MDD were higher than those in healthy controls after controlling for gender,age,education,smoking,and BMI(RVP total misses (10.20±4.44),(5.37±3.67),P=0.008,RVP latency (486.78± 135.47) ms,(370.58±72.42)ms,P=0.014).Serum IL-6 level were positively correlated with RVP mean latency in patients with MDD (r=0.46,P=0.011).But there were no correlation between serum IL-6 level and RVP total hits and RVP total misses in patients with MDD(P＞0.05),and there were also no relationship between serum IL-6 levels and RVP task in healthy controls(P＞0.05).Conclusions Serum IL-6 level may be implicated in the impairment of sustained attention in patients with MDD,and elevated IL-6 level may influence the susceptibility to MDD.
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OBJECTIVE:To improve the electronic prescription prior-review mode and increase the rate of qualified prescrip-tions. METHODS:The electronic prescription prior-review mode of our hospital was established by setting up outpatient and emer-gency electronic prescription review team,review evidence and enforcement measures. Aimed at these problems as low review effi-ciency at initial stage,non-unified standards and untimely feedback,quality control circle and internet tools WeChat were used to improve the mode and evaluate its effects. RESULTS:The electronic prescription prior-review mode of our hospital was improved by optimizing system settings,unifying review standard,one-to-one feedback and communication with WeChat public platform, etc. Average time of prescription prior-review had reduced from 50 s to 30.58 s;the rate of qualified prescriptions had increased from 86.77% to 95.30%;prescription review efficiency and the rate of qualified prescriptions had been improved significantly. CONCLUSIONS:The implementation and continuous improvement of electronic prescription prior-review mode can reduce the rate of unqualified prescriptions and promote rational drug use in outpatient and emergency department.
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Objective To explore modification of islet cell function in type 2 diabetes by the treatment of insulin detemir and insulin aspart.Methods A total of 68 patients with diagnosed type 2 diabetes were randomized into two grouops,the control group (insulin glargine combined with insulin aspart)and observation group (insulin detemir combined with insulin aspart),each group had 34 cases.Before and after treatment,fasting insulin and 2 h postprandial insulin,glycated hemoglobin (HbA1c),C peptide and fructosamine (FMN)levels were compared in two groups,and the treatment safety was observed.Results After treatment,fasting insulin and C -peptide levels in the two groups were significantly increased than before treatment(P 0.05).In the observation group,except for 2h postprandial insulin levels,other indicators had no significant differences compared with the control group (P >0.05 ).After treatment,FMN and HbA1c in the two groups decreased significantly compared with before treatment(P 0.05).During treatment,both two groups observed hypoglycemia,but there were no severe adverse reactions.Conclusion The clinical application of insulin detemir combined with insulin aspart in the treatment of type 2 diabetes can significantly improve the insulin -producing cells and accelerate functional recovery, and the clinical effect is better than the united aspart insulin glargine,with no significant adverse reactions,it can be recommended as a clinical type 2 diabetes treatment drug of choice.
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Objective To examine the levels of plasma tissue factor pathway inhibitor (TFPI) in patients with acute pancreatitis (AP) to assess the clinical value of diagnosis for severe acute pancreatitis ( SAP).Methods Sixty-eight patients were divided into mild acute pancreatitis (MAP)group (n=36) and SAP group (n=32), and twenty volunteers were chosen into normal group ( n=20 ) .Clinical data of these patients were collected, including APACHEⅡscore and Ranson score.Plasma levels of TFPI were measured by ELISA.Results The plasma levels of TFPI in SAP group, MAP group and control group were (4274.25 ±639.83),(3026.81 ±465.76) and (2468.73 ±262.39)pg/ml, respectively(P<0.05).There were significant positive correlations between TFPI and WBC, AST, ALT, TBIL, Cr, PT, APTT, PCT, APACHEⅡscore and Ranson score (P<0.05).The area under the curve (AUC) of TFPI for SAP was 0.902(95%CI=0.845 -0.959, P<0.05 ) .The cutoff value was 4028.83 pg/ml for plasma TFPI with a sensitivity of 87% and a specificity of 78%.Conclusion Plasma levels of TFPI in patients with SAP are significantly increased, which maybe help diagnose SAP.
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Objective To explore the serum levels of brain-derived neurotrophic factor in patients with depression and their correlation with age,gender,age of onset,illness course,depressive severity.Methods Serum BDNF levels in 91 depressive patients and 36 healthy controls were assayed by the ELISA method .The clinical char-acteristics were assessed by the Hamilton Rating Scale for Depression ( HAMD) .Results The serum BDNF levels in depressive patients were (24.38 ±6.27)μg/L,which was significantly lower than (31.44 ±10.72)μg/L in controls (t=3.708,P 0.05).Conclusion Serum BDNF levels in depressive patients was decreased and low levels of BDNF in serum may be a state characteristic for depression .
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OBJECTIVE@#To construct the Bmi-1 RNAi expression vector and investigate its influence on the proliferation and invasiveness of laryngeal carcinoma Hep-2 cells.@*METHOD@#The recombinant vshRNA-Bmi-1 plasmid of Bmi-1 RNAi was constructed by the lentiviral expression system, pHelper1.0/pHelper2.0/pGCL2GFP. Bmi-1mRNA and protein expressions of stably transfected laryngeal carcinoma cells were identified tespectively by real-time PCR and Western blot analyses. The changes of the proliferation and invasiveness of laryngeal carcinoma were detected by clone formation test and an invasion assay.@*RESULT@#The Bmi-1 mRNA expressions of stably transfected laryngeal carcinoma Hep-2 cells were significantly decreased. The expression of Bmi-1 protein in laryngeal carcinoma Hep-2 cells was significantly decreased. And the inhibitory rates were 79% and 88% respectively. Whereas the proliferation and invasiveness of Hep-2 cells were significantly reduced.@*CONCLUSION@#The Bmi-1 RNAi expression vector were constructed successful. Reduced Bmi-1 expression of Hep-2 cells demonstrated the role of Bmi-1 RNAi in restraining proliferation and invasiveness of laryngeal carcinoma cells.
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Humans , Cell Line, Tumor , Cell Proliferation , Genetics , Genetic Vectors , Laryngeal Neoplasms , Genetics , Metabolism , Pathology , Neoplasm Invasiveness , Genetics , Polycomb Repressive Complex 1 , Metabolism , RNA, Small Interfering , Metabolism , TransfectionABSTRACT
Objective To explore the characteristics of clinical symptoms and serum brain-derived neurotrophic factor(BDNF)level between depressive patients with and without attempted suicide behavior.Methods Serum BDNF level in depressive patients with(n=36)and without(n=55)attempted suicide behavior were assayed by ELISA,the severity of depression was measured by Hamilton rating scale for depression(HAMD).Results HAMD24 total scores(t=3.632,P=0.000),cognitive disturbance(t=-2.339,P=0.019)and hopelessness factor scores(t=-2.812,P=0.005)in depressive patients with attempted suicide behavior were significantly higher than those in depressive patients without attempted suicide behavior.There were no significant differences of anxiety/somatization,body weight,diurnal variation,psychomotric inhibition and sleeping disturbance fator scores between two groups(P＞0.05).The serum BDNF level in depressive patients with attempted suicide behavior was significantly lower than that in depressive patients without attempted suicide behavior(t=-2.122,P=0.037).There was no significant difference of serum BDNF level between male and female patients(P＞0.05).Conclusion There were certain characteristics on clinical symptoms of depressive patients with attempted suicide behavior.The low serum BDNF level might play an important role in the risk of suicide in depressive patients.
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OBJECTIVE@#To construct a lentivirus vector of RNA interference (RNAi) of EGFL7 gene and observe its inhibitive role on the invasion of laryngeal cancer cell.@*METHOD@#The effective sequence of siRNA targeting EGFL7 gene was confirmed. Both sense and antisence Oligo DNA of the targeting sequence was designed, synthesized and cloned into the pLV vector,which contained H1 promotor and green fluorescent protein (GFP). The resulting lentivirus vector containing EGFL7 shRNA was called LV-sh EGFL7,and it is confirmed by PCR and sequencing. After that, EGFL7 shRNA was transfected into Hep-2 cells and Western blot was used to test the expression of EGFL7. At last, boyden chamber was used to observe the invasion of the Hep-2 cells. Colony formation assay using a EGFL7 gene silencing on the Hep-2 cell colony forming ability.@*RESULT@#PCR and DNA sequencing demonstrated that the lentivirus RNAi vector of EGFL7 (LV-sh EGFL7) producing EGFL7 shRNA was constructed successfully. The titer of concentrated virus was 5 x 10(8) TU/L. Western blot showed that the expression of EGFL7 was negative in the EGFL7 siRNA Hep-2 cells. And boyden chamber showed the invasive capability of Hep-2 cells transfected EGFL7 siRNA were obviously decreased. EGFL7 gene silencing of cell colony formation rate of cloned Hep-2 cells and compared with empty vector cells, cell cloning and colony formation was significantly reduced.@*CONCLUSION@#The lentivirus RNAi vector of EGFL7 was constructed successfully. And EGFL7 silence can inhibit invasion of laryngeal cancer in vitro. After silence EGFL7, Hep-2 cell colony formation was significantly lower, that is, gene expression can be down EGFL7 some extent laryngeal cancer cells inhibited anchorage independent growth capacity.
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Humans , Cell Line, Tumor , Endothelial Growth Factors , Genetics , Gene Expression , Genetic Vectors , Laryngeal Neoplasms , Genetics , Pathology , Lentivirus , Genetics , RNA Interference , RNA, Small Interfering , TransfectionABSTRACT
OBJECTIVE@#This study is to explore the inhibitory effect of silencing hTERT gene by short-hairpin RNA on growth of nasopharyngeal carcinoma xenograft in nude mice with RNAi technique.@*METHOD@#Construction and expression of hTERT cDNA sequence according to the specific hTERT mRNA, including fluorescein eukaryotic expression vector, packaged into a lentivirus. qPCR and Western blot analyzed hTER.T mRNA and protein levels in transfected cells. Proliferation rate of transfected cells was determined by MTT assay in vitro. Cell growth cycle was detected by flow cytometry. The invasiveness of each group was compared using in vitro cell invasion assay.@*RESULT@#RT-PCR and Western blot analysis showed that, hTERT siRNA significantly reduced hTERT mRNA and protein levels, especially hTERT siRNA1. siRNA treatment inhibited tumor cell proliferation, and cell migration and invasiveness were significantly lower. Tumor cell growth rate was significantly different between control group and siRNA group (P 0.05).@*CONCLUSION@#Lentivirus containing specific sequences of hTERT gene could significantly inhibit the growth of nasopharyngeal carcinoma cells line. hTERT siRNA expression vector can effectively inhibit NPC cell proliferation, migration and invasion, which may provide a novel molecular targets for gene therapy of nasopharyngeal carcinoma.
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Animals , Humans , Mice , Cell Line, Tumor , Cell Movement , Cell Proliferation , Gene Silencing , Genetic Vectors , Lentivirus , Genetics , Mice, Nude , Nasopharyngeal Neoplasms , Pathology , Neoplasm Transplantation , RNA Interference , RNA, Small Interfering , Genetics , Telomerase , Genetics , TransfectionABSTRACT
Objective In this study,we investigated the hair cell apoptosis and the molecular mechanisms in age-related hearing IOSS mouse cochlea.Methods All animals were assessed by ABR and DPOAE analysis in both ears.TUNEL(Terminal dexynucleotidyl transferase(TdT)mediated dUTP Nick End Labeling)and PI were used to identify DNA fiagments and caspase-3 activities in hair cells.Results The results showed that the nmf308 mice had progressive hair cell loss along with age.The cochlear OHCs were reduced 5%～10% at 1 month and 100% at 3 month in the basal region.Substantial amounts of TUNEL-postive OHCs nuclei were observed at age of 1 month,and activated caspase-3 labeling OHCs were most obviously observed at age of 2 months.Conclusion These results suggest that DNA single strand break is attributed primarily to apoptosis of cochlear lesion,and activation of caspase-3 at leter stage leads to the hair cell apoptiovs of nuclear condensation in age-related hearing loss mouse cochlea.
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Objective To construct the prokaryotic expression vector bearing fusion gene NT4-ADNF-9 and lay foundation for further study on genetic therapy of neuraseusory deafness. Methods By means of asymmetrical prince/ template, double stranded eDNA of activity dependent neurotrophic factor-9 (ADNF-9) was obtained, which included restriction enzymes sites on the two extremities. ADNF-9 eDNA was ligated to the signal and leader peptides of nenrotrophin 4 (NT4), and the fusion gene was named NT4-ADNF-9. Then it was suheluned into prokaryotic expression vector pBV220, and called pBV220/ NT4-ADNF-9. Results Evidences of DNA sequence analysis and restrtction enzymes digestion showed that we recombined ADNF-9 eDNA to the 3'terminal of the signal and leader peptides of NT4, and the fusion gene was subcluned into pBV220 successfully. Bioactivity of the products was proved that it could support the cell survival and neurite growth in the primary cultures of dorsal root ganglia (DRG) of embryonic day-8 cbicken neurons as compared to the control. Conclusion Prokaryotic expression vector pBV220/NT4-ADNF-9 can be constructed successfully and the bioactivtty is satisfactory.
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Objective To study the recovery of the outer hair cells in the bat cochlea after gentamicin exposure.Methods Bats were injected with a daily dose of gentamicin for 15 consecutive days and bromodeoxyuridine (BrdU)was given from day 16 to day 40 of this recovery phase. Hearing was assessed by overt acoustic behavior and auditory brainstem responses analysis, which was performed one day prior to the first injection and a day after the last injection (day 16). On day 40 animals were sacrificed for detection of cells that could take up BrdU. Results After 15 days of gentamicin treatment, all of the animals were proved to be deafened with significant increases of ABR thresholds,compared with control group. The findings in immunocytochemical stained samples and scanning electron microscopy revealed that BrdU labeled nuclei were observed in the cochlea in all of the deafened animals most commonly in the regions of the first-row and second-row Deiter's cells (DCs) and occasionally in the regions of the third-ruw DCs.Conclusion We suggest that, under sufficient drug and enough time, the bat cochlear supporting cells can directly transdifferentiate into the outer hair cells after aminoglycoside exposure. This transdifferentation process is essential for repair of outer hair cells and recovery of normal function after gentamicin exposure.
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dichloromethane,since the former four components account for more than 90% of the total HRV,which proposed as the target compounds in risk management of the VOCs.
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Objective To establish adult rat auditory epithelial cell culture and try to find precursor cells of auditory hair cells in vitro. Methods With refinement of culture media and techniques, cochlear sensory epithelial cells of adult rat were cultured. Immunocytochemistry and Bromodeoxyuridine (BrdU)labeling were used to detect properties and mitotic status of cultured cells. Results The cultured auditory epithelial cells showed a large, flat epithelial morphotype and expressed F-actin and cytokeratin, a subset of cells generated from auditory epithelium were labeled by calretinin, a specific marker of early hair cell. Conclusion Adult rat auditory epithelium can be induced to generate hair cell-like cells by nature culture, this phenomenon suggests that progenitor cells may exist in rat cochlea and they may give birth to new hair cells. Whether these progenitor cells are tissue specific stem cells is still need more study.
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Using Xanthine-Xanthine Oxidase system to generate superoxide ani-on, using H2O2 -Fe2 + system to generate hydroxyl radical, the role of scavenging oxygen free radical by Miltiorrhiza was studied by electron paramagnetic resonance and spin trapping. The result suggested that the scavenging rate of hydroxyl radical by Salvia Miltiorrhiza injection is 65%, and that of superoxide anion is 100%. This result suggests that scavenging cytotoxic oxygen free radicals may be one of important pharmacological mechanism of Salvia Miltiorrhiza.
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In this experiment, Animal model of guinea pig's experimental Autoimmune sensorineural hearing Loss was established by injecting crud inner ear antigen (CIEAg), Dexamethason was used to tret the deaf guinea pigs for one week, the ABRT(Acoustic Brain—stem Reaction Threshold) of guinea pigs was measured and the morphological change of the guinea pigs inner ear, tissue was observd. We found that the deaf guinea pig's ABRT rose distinctly to 60. 8?5.31 dBspl and inner ear hair cell showed severe damage. The number of the hair cell of the third cochlear turn lost 111?55.8. After one week treatment with Dexamethason,the treated group's ABRT reduced to 48. 8?6. 69dBspl, the number of the outer—hair—cell of the third cochlear turn is only 57. 254?18. The results indicate that Dexamethon has effect on the AISNHL,it can clearly lighten the damage of inner ear tissue and significantly improve the ABRT. The mechanism still remains unknown.