AIM:To establish HPLC method for making a assay of nucleosines in Ningxinbao Capsules(Cepha-(lospovium) sinensis Chen.sp.nov). METHODS:The assay was performed on a C_(18) column(4.6 mm?250 mm,5 ?m).The mobile phase was composed of phosphate buffer(pH 7.8-8.0)-acetonitrile(83∶17).The flow rate was at 1.0 mL/min.The detection wavelength was at 260 nm. RESULTS:The linear ranges of uridine,adenosine and inosine lay in the concentration range of 4.168-83.36,4.480-89.60,5.230-104.6 ?g/mL,respectively(r=0.999 9). The average recoveries were 0.4%,1.8%,2.5%,respectively. CONCLUSION:The method is simple,rapid.It is suitable for the assay of nucleosines in Ningxinbao Capsules.

Objective To develop and validate the real-time fluorescent quantitative PCR(Q-PCR)method for the detection of 8 murine viruses. Methods The specificity,sensitivity and precision of the Q-PCR method were verified by four laboratories,and the virus simulated contamination test and blind sample detection were carried out simultaneously,of which the detection results were compared. The Q-PCR method was used to detect 26 batches of monoclonal antibody cell lines for SARS-CoV-2 vaccine production and 15 batches of other products of murine origin. Results The Q-PCR method used for detecting 8 kinds of murine viruses had no cross reaction with the same family and genus or other murine viruses. Except the sensitivity of laboratory 2 to ectromelia virus(EctV/Mouse Pox,MPV)was 2 × 10~2copies/μL,the sensitivity of laboratory 2 to other 7 viruses and 3 other laboratories to 8 murine viruses was 2 × 10~1copies/μL. Except the inter-assay CV of the copy number of mouse adenovirus(MAdV)detected by laboratory 3 was 37. 58%,the intra-assay and inter-assay CVs of the Ct and copy number of other 7 viruses detected by laboratory 3 and those of 8 viruses detected by other 3 laboratories were all less than 25%.The sensitivity of virus simulated contamination test met the parameter requirements. The coincidence rate of blind sample detection results by 4 laboratories was 100%. All the 26 batches of monoclonal antibody cell lines for SARS-CoV-2 vaccine production and 15 batches of other murine derived products were negative for 8 murine viruses. Conclusion Q-PCR method for murine virus has good specificity,sensitivity and precision,and can be used for the detection of murine derived biological products.

Adult ; Choroid Plexus Neoplasms ; pathology ; Diagnosis, Differential ; Ear Neoplasms ; pathology ; radiotherapy ; surgery ; Endolymphatic Sac ; pathology ; Glomus Jugulare Tumor ; pathology ; Humans ; Immunohistochemistry ; Magnetic Resonance Imaging ; Male ; Meningioma ; pathology ; Skull Neoplasms ; pathology ; radiotherapy ; surgery ; Temporal Bone ; pathology ; Tomography, X-Ray Computed

Carcinoma, Hepatocellular ; enzymology ; pathology ; Glutathione Peroxidase ; Humans ; Liver Neoplasms ; enzymology ; pathology ; Thioredoxin-Disulfide Reductase

BACKGROUND:Tumor cels are resistant to chemotherapeutic drugs, and drug resistance is closely correlated with tumor stem cels. Therefore, how to kil tumor stem cels wil become the key to the treatment of oral squamous cel carcinoma. OBJECTIVE:To study the effect of 5-fluorouracil on biological characteristics of tongue squamous cel carcinoma Tca8113 cels. METHODS:Viability of Tca8113 cels treated with different concentrations of 5-fluorouracil was determined by cel counting kit-8, and the best drug concentration and time were screened for subsequent experiments. Tca8113 cels without 5-fluorouracil acted as control group. Then the cel cycle and percentage of the side population cels in Tca8113 cels were determined by flow cytometry. Scratch test was used to determine the migration ability of Tca8113 cels. RESULTS AND CONCLUSION:Results from cel counting kit-8 showed that 5-fluorouracil inhibited the viability of Tca8113 cels positively in a time- and dose-dependent manner. Tca8113 cels under intervention with 50 mg/L 5-fluorouracil for 48 hours showed lowest cel viability. Flow cytometry results showed that in the experimental group, G0/G1 phase cels increased significantly compared with the control group (P=0.01), S phase cels decreased significantly compared with the control group (P=0.244), and G2/M phase cels disappeared completely. After treatment with 5-fluorouracil, the percentage of side population cels was increased significantly (P=0.00). The scratch test showed that in the experimental group, the cels had better ability of wound healing than those in the control group. In conclusion, 5-fluorouracil can enrich the cancer stem cel population in Tca8113 cels.

Objective To explore the characteristics of attachment and the effects of childhood trauma,emotional autonomy and parental rearing style of anxiety disorders.Methods 38 outpatients and hospital patients in Anhui Mental Health Center with anxiety were recruited as the study group,and 39 age-,gender-,and educationmatched adult college students or medical staff were screened as the control group.The study group and control group were assessed with adult attachment questionnaire3.1 (AAQ3.1),parental bonding instrument (PBI),childhood trauma questionnaire 28item short form (CTQ-SF) and emotional autonomy scale (EAS).Results ①Higher levels of insecure adult attachment (84.2％) were reported in the anxiety disorders group compared with the normal controls(10.3％),and the attachment type of two groups had statistical significance(x2 =42.28,P＜0.01).② The attachment of anxiety disorders,emotional autonomy,childhood trauma and the way of parenting was related to different degree.Attachment,childhood trauma and parenting were significantly increased in the anxiety disorders group compared with the normal controls(P＜0.05).The mother attachment factors were significantly correlated with individualized (r=0.405,P＜0.405),mother love (r=0.358,P＜0.358),mother control (r=0.467,P＜0.467),father control (r=0.460,P＜0.01),emotional abuse (r=0.473,P＜0.473) and sexual abuse (r=0.494,P＜0.01).The father attachment factors were significantly correlated with individualized (r=0.520,P＜0.01),emotional abuse (r=0.339,P＜0.339) and sexual abuse (r=0.378,P＜0.05).And individualized,mother love,parental control,emotional and physical abuse could be employed to predict attachment factor.Conclusion The attachment pattern is insecure in the anxiety disorders.Emotional autonomy,childhood trauma and parenting have a significant influence on attachment patterns of anxiety disorders.

Intermittent hypoxia (IH) is a direct consequence of obstructive sleep apnea syndrome (OSAS), which results in left ventricular dysfunction , remodeling and myocardial cell injury .Understanding the mechanisms of OSAS is important for us to prevent and treat the cardiovascular complications in the clinical practices .We summarize the effects of IH on left ventricular function , and analyze the mechanisms at the cellular and molecular levels , including oxidative stress, ion exchangers and inflammation .In addition, the effects of endothelin-1 and hypercapnia on IH-induced cardiac injury are discussed .

Objective To explore the best humidifying methods of artificial airway by comparison of different humidifying approaches.Methods 124 patients were divided into the control group (60 cases) and the treatment group (64 cases).Two methods,continuous airway humidifying by the trace injection pump and continuous airway humidifying by oxygen atomization were adopted.The humidifying effect,tolerance rate of patients,the airway complications and nursing cost were compared between the two groups.Results The method of continuous airway humidifying by oxygen atomization had better effect,was easy to be tolerated,less complications and less cost.Conclusions Continuous airway humidifying by oxygen atomization is a safe,effective,low-cost method,it is easy to be tolerated by patients and is worthy of being popularized.

Objective To investigate the effect of using prophylactic antidepressant treatment with citalopram on motor function recovery in patients with acute cortical infarction. Methods The patients with first-ever acute middle cerebral artery territory cortical infarction and with upper limb motor deficits within 24 h after onset were enrol ed prospectively. They were randomly divided into either a citalopram group or a control group. On the basis of conventional treatment, the citalopram group was given citalopram hydrobromide tablets oral y (20 mg/d) within 48 h after onset of stroke for 30 d. The 17-item Hamilton Depressive Rating Scale (17-item HDRS) was used to conduct the assessment of depressive symptoms before and after treatment. The National Institutes of Health Stroke Scale ( NIHSS ) and Fugl-Meyer Assessment (FMA) hand motor function score were used to conduct function assessment before and after treatment. Results A total of 66 patients were enrol ed in the analysis, including 32 patients in the citalopram group and 34 in the control group. There was no significant difference in baseline clinical data between the 2 groups. The baseline stroke severity of al patients was moderate (NIHSS score 5-15). Compared with baseline level at day 30 after the treatment, the HDRS score of the citalopram group was improved significantly (6. 70 ± 3. 58vs. 9. 86 ± 3. 48; t= 3. 380, P= 0. 001 ). However, there was no significant difference with the control group after treatment (6. 70 ± 3. 58 vs. 8. 12 ± 2. 96;t=1. 745, P=0. 086). The NIHSS scores in the citalopram group and the control group were decreased respectively (4. 30 ± 1. 88 vs. 2. 00 ± 1. 24;t=5. 900, P<0. 001). The hand FMA scores were increased significantly (4. 00 ± 0. 70 vs. 1. 42 ± 1. 91;t=7. 197, P<0. 001). There was significant difference between the 2 groups. In addition, the hand motor function score at day 30 after treatment was more than 25% of the baseline recovery in 14 patients of the citalopram group (43. 8%) and in 5 of the control group (14. 7%). The citalopram group was significantly higher than the control group (χ2 =6. 783, P=0. 009 ). Conclusions Early prescription of citalopram can significantly promote the motor function recovery in acute cortical infarction patients with moderate motor deficit and its mechanism may not be associated the antidepressant effect.

BACKGROUND:Increasing evidence has demonstrated that bone marrow mesenchymal stem cel (BMSC) transplantation can promote skin, liver and lung repair in animal models; andLeonurus sibiricus L. has the ability of promoting blood circulation and regulating menstruation.
OBJECTIVE: To investigate the therapeutic effect of BMSC transplantation with leonurine on intrauterine adhesions (IUA) in rabbits and the relevant mechanism of action.
METHODS: After modeled using dual injury method, rabbit models of IUA were randomly divided into five groups: sham-operated group (sham), model group (IUA), BMSC transplantation group, leonurine treatment group and combined treatment group (BMSCs+leonurine). Rabbits in the sham group were only given normal saline rinsing after hysterotomy, while those in the latter three groups were correspondingly given intrauterine BMSC transplantation or/and intragastric administration of 4 mg/kg leonurine for 14 days. Morphological changes of the endometrium were observed using hematoxylin-eosin staining, and expression levels of transforming growth factor β protein, Smad3 protein and interferon-γ mRNA were detected using immunohistochemical staining and real-time fluorescence quantitative PCR, respectively.
RESULTS AND CONCLUSION:Compared with the model group, the degree of IUA was al significantly improved in the other groups, especialy in the combined treatment group. Moreover, BMSC transplantation, leonurine treatment and their combined use al could inhibit IUA-induced increase of transforming growth factorβ and Smad3 protein expression and IUA-induced decrease of interferon-γ mRNA level. Importantly, al these alternations were much more pronounced in the combined treatment group. Our results show that the combined use of BMSC transplantation and leonurine treatment can exert a synergistic effect in the improvement of IUA through the transforming growth factor β/Smad3 pathway.