Asian Continental Ancestry Group ; Humans ; Language ; Medicine, Chinese Traditional ; Translations

BACKGROUND:Compared with the normal intervertebral disk, the density of nerve fibers and number of nerve endings and neuropeptides appear to be more in the degenerated intervertebral disk. However, this phenomenon does not occur in the normal y aged disk.
OBJECTIVE:To evaluate the axonal growth and induction of a painful neuropeptide and substance P using rat dorsal root ganglion neurons and degenerated human disc cells in vitro.
METHODS:The human intervertebral discs were harvested from patients with discogenic low back pain and normal people. And extracelluar matrix extracted from human degenerative intervertebral discs was cultured with rat dorsal root ganglion neurons. The promotion of axonal growth and induction of substance P of dorsal root ganglion neurons in extracted medium were evaluated through morphology observation and enzyme-linked immunosorbent assay, respectively.
RESULTS AND CONCLUSION:Compared with the normal group, the content of nerve growth factor in the degenerative group was significantly higher and the average length of neuritis was significantly longer in the experimental group (P<0.05). After intervention with anti-nerve growth factorβ, the average length of neuritis became remarkably shorter. The percentage of substance P-immunoreactive cells was significantly higher in the degenerative group compared with the normal group (P<0.001). Nerve growth factors that highly express in the extracellular matrix from the degenerative intervertebral dick can promote neurite outgrowth of dorsal root ganglion neurons and induce release of neuropeptides related to pain transmission.

Objective:To evaluate the possible roles of IL-18 in HBV infection, and to clarify the immune state during IFN? therapy. Methods:Peripheral blood lymphocytes from 2 groups of HBV infectors(including 15 asymptomatic carriers,26 patients with chronic hepatitis B) and 10 healthy individuals (as normal controls) were analyzed by flow cytometry. The levels of IL-18 were also detected before, during, and at the end of IFNa therapy,Results: (1)The level of IL-18 was the lowest in asymptomatic carrier group. However there was no significant difference between chronic hepatitis and normal control. (2)The patients with chronic hepatitis were further divided into 4 subgroups according to the inflammation degree of liver. Results showed that the severity degree of liver inflammation was accompanied with the elevation of IL-18 production. (3)IL-18 in chronic hepatitis B correlated with serum ALT positively ( r = 0.61,P

ObjectiveTo study CT features of acute intracranial trauma and changes of hematoma in acute stage. MethodsCT findings of acute intracranial trauma of 152 cases were analyzed. ResultsIn 100 cases with intracranial hematoma, the hematoma enlarged obviously within 5-72 h after trauma in 25 cases; the hematoma enlarged markedly within 72 h-7d after trauma in 3 cases. In 76 cases of cerebral contusion, counter point trauma was found in 17 cases. In 61 cases of subarachnoid hemorrhage, high density in cerebral sulcus was shown in 49 cases. Skull fracture was found in 75 cases. Conclusions Intracranial hematoma may enlarge gradually within 7d after trauma. Cerebral contusion was partially due to counter point trauma. Hemorrhage in cerebral sulcus was demonstrated on CT as increased density in the cerebral sulcus, which is the most important sign of subarachnoid hemorrhage. Hemorrhage in interhemispheric fissure was demonstrated on CT as centipede-line increased density, which is an important sign for differentiating from subdural hematoma. Skull fracture was closely related with lntracranial trauma, which was complicated with adjacent extradural hematoma frequently.

The research and development of monoclonal antibodies (mAbs) is a rapidly developing field. From the first generation of murine mAbs to the fourth generation of fully human mAbs, the efficacy and safety of mAbs in the treatment of various diseases have been continuously improved. In order to regulate the development and evaluation of mAbs, drug regulatory agencies and pharmacopeias of America and China have tried to issue feasible test procedures and acceptance criteria for quality evaluation of mAbs and biosimilars. Mass spectrometry (MS) technique with high sensitivity, resolution, selectivity, and specificity has become an important tool to evaluate the quality characteristics of monoclonal antibody-related products or specify mAb quality. The research of MS-based monoclonal antibody study involves structure characterization, impurity analysis, pharmacokinetics/pharmacodynamics (PK/PD), etc. This review focuses on the current quality control requirements of mAb related products and the development of MS technique for mAb quality characterization and specification. It is expected to provide information and references for evaluating the quality of monoclonal antibodies under research and development.

In recent years, the biopharmaceutical industry has grown rapidly, and the market size of monoclonal antibody drugs has increased significantly. Accurate structural characterization and quality control are the supporting technologies for the development of monoclonal antibody drugs. As a significant post-translational modification of antibody drugs, glycosylation has an important influence on its efficacy, stability, and immunogenicity. The existing literature usually uses liquid chromatography-mass spectrometry to perform major glycosylation modifications of monoclonal antibody drugs. Characterization, there are few studies on low-abundance glycosylation, but the characterization and control of low-abundance glycosylation cannot be ignored. In this study, we have established a qualitative and quantitative analysis technology for N-glycans based on RapiFluor-MS reagent-labeled monoclonal antibody drugs. This method has a short sample processing time and high sensitivity. It can not only characterize the main glycoforms of three monoclonal antibody drugs (adalimumab, bevacizumab, and trastuzumab) but also can quantify low-abundance N-glycans. The results of the study showed that the main glycoforms specified in the Pharmacopoeia could be detected in different batches of monoclonal antibody drugs, but the content of N-glycans in different batches of samples is not identical. After that, we analyzed the N-glycans connection sites and glycoforms at the intact glycopeptide level, further enriching the N-glycans structure information of the monoclonal antibody. The qualitative and quantitative analysis technology of N-glycans based on RapiFluor-MS reagent-labeled monoclonal antibody drugs can realize the in-depth characterization and control of glycosylation modification of monoclonal antibody drugs.

Objective To evaluate the clinical outcomes of different stages of transabdominal preperitoneal hernia repair (TAPP) and open hernia repair surgery (Rutkow) in treating adult inguinal hernia.Methods The clinical data of patients with inguinal hernia undergoing hernia repair(TAPP,TAPP Ⅰ group:56 patients administered TAPP during January 2003 to December 2005 ; TAPP Ⅱ group:76 patients administered TAPP during January to December 2010) and Rutkow hernia-ring filling (Rutkow group:78 patients administered Rutkow during January 2003 and December 2005) were analyzed retrospectively.Clinical indexes and effective indicators were observed to compare the treatment effects of the operation procedures,including duration of surgery,post-operation hospital stay,post-operation leaving bed time,post-operation free activity time,hospitalization costs,time of beginning taking food,and complications.Results The TAPP Ⅱ group had significantly shorter average length of stay,time of beginning taking food,post-operation leaving bed time and post-operation free activity time than the other two groups (average length of stay:(2.6 ± 1.6) d vs.(4.1 ±2.6) d vs.(4.2 ± 1.9) d; time of beginning taking food:(8.6 ± 3.1) h vs.(22.2 ± 3.8) h vs.(20.7 ± 3.2)h;post-operation leaving bed time:(4.6 ±2.2) h vs.(18.3 ±2.3) h vs (20.5 ±3.1) h;Post-operation free activity time:(8.6 ± 2.9) d vs.(15.2 ± 3.3) d vs.(17.1 ± 3.8) d ; P ＜ 0.05).There were no significant differences between TAPP Ⅰ and Rutkow groups on average length of stay,time of beginning taking food,postoperation leaving bed time and post-operation free activity time (P ＞ 0.05).TAPP Ⅰ group had significantly longer duration of operation than the other two groups ((113.3 ± 18.6) min vs.(50.4 ± 11.8) min vs.(48.6 ± 12.1) min,P ＜ 0.05).There was no difference on surgery duration between Rutkow and TAPP Ⅱ groups (P ＞ 0.05).No difference was observed regarding rates of postoperative complications and recurrence (P ＞ 0.05).Conclusion With the advancement of technology,TAPP shows more advantages compared to traditional herniorrhaphy,such as minimal trauma,fewer complications and shorter duration of operation and lower recurrence rate.TAPP is an excellent hernia repair for inguinal hernia.

AIM: To study the effects of resveratrol on the proliferation of human retinal vascular endothelial cells induced by cobalt chloride-simulated hypoxia in vitro.METHODS: CoCl2 (100μmol/L) was used to simulate hypoxic condition, and human retinal vascular endothelial cells were cultured in vitro as model. The cell proliferation was determined by MTT method; SABC method was employed to test the expression of vascular endothelial growth factor (VEGF); and computer image analyzer was used to process data. The effects of resveratrol on the proliferation of vascular endothelial cells were observed.RESULTS: Resveratrol inhibited the proliferation of human retinal vascular endothelial cells induced by CoCl2 in a dose- and time-dependent manner in vitro, meanwhile VEGF expression in all groups which were administered medicine was down-regulated. Both kinds of inhibitive effects of resveratrol were statistically significant (P<0.01).CONCLUSION: Resveratrol can significantly inhibit the proliferation of human retinal vascular endothelial cells and the expression of VEGF, which may provide a new approach for prevention and treatment of retinal neovascular diseases.

Objective　To study the predictability, stability and safety of laser in situ keratomileusis (LASIK) for myopia.Methods　 Five hundred and Sixty-five eyes ( 293 patients ) were treated with the SCMD corneal shaper and laser sight Compak - 200 excimer laser and followed up for more than 6 months. These eyes were divided into 4 groups according to the degrees of myopia: Group Ⅰ:-1.50～-5.75D,120 eyes; Group Ⅱ:-6.00～-9.75D,230 eyes; Group Ⅲ:-10.00～-14.75D,148 eyes and croup Ⅳ:-15.00～-26.00D,67 eyes.Results　Six months post-operatively, mean uncorrected visual acuity of each group was 1.15±0.20, 0.92±0.22, 0.69±0.24 and 0.44±0.22 respectively; The uncorrected visual acuity of 0.5 or better was 100%, 94.6%, 85.8% and 47.7% respectively; And 1.0 or better was 91.7%, 56.7%, 18.0% , 0% respectively. Mean spherical equivalent of each group was -0.14D±0.61D, -0.43D±1.20D, -0.57D±1.47D and -1.79D±2.57D respectively. There were no serious complications. Conclusion　 LASIK is an effective and safe method for reducing myopia. But the potential complications should be noticed.

Objective To assess the feasibility of laryngeal mask anesthesia under spontaneous ventilation in pulmonary resection with uniportal video-assisted thoracoseopic.Methods Forty patients with pulmonary masses were randomized into two groups(n =20 in each group) to undergo pulmonary resection with uniportal videoassisted thoracoscopic,full implementation of thoracoscopic lobectomy and mediastinal lymph node dissection.Patients in two groups were induced by intravenous anesthesia,and the skin of the fifth intercostal space were infiltrated with ropivacaine.Patients in two both groups were maintained by intravenous ancsthesia and sevoflurane anesthesia.Muscle relaxants were administered in endotracheal inmbation group but not in the LMA group.Patients in the LMA group and tracheal intubation group underwent with spontaneous breathing and one-lung ventilation respectively.Results No significant differences were found in surgery time,intraoperative lowest SpO2,preoperative PaCO2,1-h postoperative blood gas analysis between the two groups.The anesthesia induction time,extubation time,and the stay time for the recovery of anesthesia and postoperative hospital stay were significantly shorter than those in the tracheal intubation group.The increments in MAP and HR after intubation operation were smaller than those in the LMA group.The total dosage of sulfentanyl and propofol per kg in the LMA group were significantly less than those in the control group.The PaCO2 after pulmonary resection and the intraoperative maximum level of PETCO2 in the former group were significantly higher than those in the tracheal intubation group,however the incidence of throat discomfort and the hospitalization cast were significantly decreased.Conclusion In view of patient rehabilitation and in hospitalization cast,laryngeal mask anesthesia under spontaneous ventilation in uniportal video-assisted thoracoscopic surgery was better than the procedure performed under intubation anesthesia.