Objective To compare 2 kinds of commonly used viral vectors, adeno-associated viral (AAV) vector and lentiviral (LV) vector in the gene transfection for bone marrow derived mesenchymal stem cells (MSCs). Methods MSCs were isolated with density gradient (lymphocytes seperation) and identified with HE staining and immunocytochemistory staining for Nestin. The proliferation of BMSCs was detected with BrdU labeling. AAV mediated gene transfection was carried out through recombinant AAV-LacZ viral particles. For LV mediated gene transfection, the LV particles were used directly. The transfection efficiency was estimated with β-gal staining and green fluorescent protein under the fluorescent microscope respectively. Results MSCs was successfully isolated from the bone marrow. HE staining showed that MSCs was with big nucleus, 1-3 nucleoli, and high nucleocytoplasmic ratio. BrdU labeling suggested that MSCs were proliferating. Some MSCs expressed Nestin. The gene transfection efficiency mediated with AAV vector was 49.1%, and it was 91.4% with LV vector (P<0.01). Conclusion The LV vector is more efficient on gene transfection than AAV vector.

Objective To investigate the effect of growth inhibition and apoptosis induction of sunitinib-liposome-loaded microbubbles on renal carcinoma cell strain.Methods GRC-1 cell strain was cultured in vitro,and was divided into 6 groups:blank control group,pure microbubbles group,pure lipsomes group,sunitinib group,sunitinib-liposome-loaded microbubbles without ultrasound treat group,sunitinib liposome-loaded microbubbles with ultrasound treat group.Growth inhibition in different groups was observed at different time with MTT assay,apoptosis induction with Sigma-FlTC technology and transmission electron microscope.Results The growth inhibition and apoptosis promotion of GRC-1 cell were significantly increased in sunitinib-liposome-loaded microbubbles with ultrasound treat group compared to the other groups.Conclusions Microbubble guided sunitinih delivery can increase the effect of the growth inhibition and apoptosis induction of GRC-1 cells,which may provide an more effective approach for cancer treatment.

Objective To investigate the expression of P-glycoprotein(P-gp), multidrug resistance-associated protein (MRP), lung resistance-related protein (LRP) and predicts treatment outcome in the elderly acute myeloid leukemia. Methods Multi-parameter flow eytometric assay was used to quantify expression of P-go, muhidrug-associated resistance protein (MRP) and lung resistance-related protein (LRP) in bone marrow viable blasts from 12 eldely acute myeloid leukemia patients at diagnosis (M2a:4, one is come from MDS, M3a:2, M5a:5, M6a:1). Correlation of the MDR protein expression with treatment outcome were analysed. Results The frequency of expression of P-gp, MRP and LRP was 58.33 %, 8.33 %, 50 %, respectively and P-gp(+)/MRP(+) 0, P-gp(+)/LRP(+) 33.33 %, MRP(+)/LRP(+) 0, P-gp(+)/MRP(+)/LRP(+)8.33 %, P-go(-)/MRP (-)/LRP(-) 33.33 %;respectively. The frequency of overexpression of P-gp or LRP alone and both of them were relatively higher. The rate of complete remission (CR) and overall survival (OS) at one year of P-gp(+) group were significantly lower than those of P-go(-) group, and LRP(+) group also were lower than LRP(-) group. Conclusion The Frequency of expression of P-gp or LRP and coexpression of both of them were higher in elderly patients with AML. The overexpression of P-gp and/or LRP was a poor prognotic factor for eldely myeloid leukemia in elderly patients.

Objective To investigate the correlation of the expressions of P170,topoisomerase Ⅱ(TOPⅡ)and the proliferation in gliomas.Methods Ki-67 was used as the marker of the proliferation in gliomas.The expressions of P170,TOPⅡ and Ki-67 were tested by S-P immunohistochemical technique using monoclonal antibody to their protein in 54 cases of low-grade gliomas(WHO Ⅰ～Ⅱ grade)and 54 cases of high-grade gliomas(WHO Ⅲ～Ⅳ grade),analysis of the clinical and follow-up were performed.Results The expressions of P170,TOPⅡ and Ki-67 had significant differences between low-grade and high-grade gliomas(P<0.01).Correlation analysis showed that the expression of P170 was negatively related with Ki-67(r=-0.276,P=0.019);the expression of TOPⅡ was positively related with Ki-67(r= 0.637,P<0.001);there was no correlation between the expressions of P170 and TOPⅡ.Conclusion The expressions of P170 and TOPⅡ are associated with the malignant prognosis in gliomas.

Purpose: This study aims to investigate the risk indicators contributing to implant failure, and analyze the relationship between riskindicators and marginal bone loss (MBL) through long-term follow-up over 3 years. Materials and Methods: From 2003 to 2017, patients’ medical charts with a history of dental implant surgery at Chonnam National University Dental Hospital were reviewed retro-spectively. The patient’s demographic variables, and clinical variables were recorded. Periapical radiographs were used to evaluated the changes in MBL around implants. And we analyzed implant survival rates. Multiple regression analysis with backward elimina-tion was conducted to correlate the patient’s clinical variables and implant failure and Pearson correlation analysis was performed to the correlated between implant long-term survival rates and MBL and initial stability. Results: In multiple regression analysis, there was a statistically significant negative correlation between abutment connection type ( β = -.189, P < .05), with or without SPT ( β = -.163, P < .05), diabetes ( β = -.164, P < .05), osteoporosis ( β = -.211, P < .05) and MBL. Anticoagulant medication influenced the long-term success rate of implants. PTV values at the second implant surgery showed a statistically significant negative correlation with long-term implant survival (P < .05). Conclusion For the long-term success of the implant, the appropriate abutment connection type must be selected and the periodic SPT is recommended. Systemic diseases such as diabetes and osteoporosis and antico-agulant medication should be considered. Furthermore, since high PTV at the second implant surgery correlated with the long-term survival rates of the implant, initial stability should be carefully considered before undergoing the prosthetic procedure.

PURPOSE: The number of suicide attempts has increased in Korea. Not only physical therapy, but also psychiatric treatment is important. And urgent follow-up community mental health care is needed. This study reports on a management program associated with community mental health centers for suicide attempters who visited a regional emergency medical center; we suggest establishment of community mental health centers with an emergency department on a national scale. METHODS: We conducted a retrospective analysis of 582 suicide attempters who visited a regional emergency medical center from March 1, 2009 to October 31, 2010. We recorded information on gender, age, patient's identification number, method of suicide attempt, number of previous attempts, past history of psychiatric disease, patient disposition, and Risk-rescue rating scale (RRRS). We analyzed fatality according to gender, age, method of suicide attempt, number of previous attempts, past history of psychiatric disease, and RRRS. We used Pearson's chi-square test and Mann-Whitney test for statistical analysis. RESULTS: Women had more suicide attempts than men and drug intoxication was the most common method of attempted suicide. Significant differences in fatality were observed according to age, gender, methods of attempted suicide, RRRS and no past history of psychiatric disease. Thirty three suicide attempters were registered to community mental health centers and underwent regular follow-up. CONCLUSION: Follow up through community mental health centers is important. However, there is a limitation of low enrollment and a regional medical center. Therefore, government support for community mental health centers is needed. If follow-up studies with community mental health centers are conducted on a national scale, the number of suicide attempters will be reduced.
Community Mental Health Centers ; Emergencies ; Female ; Follow-Up Studies ; Humans ; Korea ; Male ; Mental Health ; Retrospective Studies ; Suicide ; Suicide, Attempted

Near-infrared spectroscopy is a device used to determine whether traumatic intracranial hemorrhage has occurred and is primarily used for screening in emergency situations. In this study we examined the applicability of this equipment in postmortem inspection. This study included 124 autopsy cases and 59 postmortem inspection cases performed in the National Forensic Service from July 2017 to October 2018. We carried out the test using Infrascanner Model 2000 (Infrascan Inc.). Autopsy cases were divided into four groups (epidural hemorrhage or subdural hemorrhage group, traumatic subarachnoid hemorrhage or cerebral contusion group, nontraumatic intracerebral hemorrhage group, and control group) and analyzed. There was no difference in the test results according to the presence and type of intracranial hemorrhage. The possibility that variables related to postmortem change affected the test results was considered. In conclusion, this study confirmed that near-infrared spectroscopy is not suitable for the detection of traumatic intracranial hemorrhage in postmortem inspection.

Objective To observe the effects of Levo-tetrahydropalmatine(l-THP)on the expression,regression and relapse of conditioned place preference(CPP)in ketamine induced rats,and to detect the content of dopamine(DA)in the striatum(caudate putamen,CPu)of the rat brain at different time points.Methods Ketamine addiction rat model was established by CPP.The effects of l-THP on the expression,regression and relapse of ketamine induced rat CPP were investigated using CPP score as the index.The content of DA in CPu of rats was determined by ultra-performance liquid chromatography coupled to tandem mass spectrometry(UPLC-MS/MS)after ketamine administration and l-THP intervention at 30 min,60 min,90 min,120 min and 150 min.Results It indicated that 1-THP could decrease the expression of CPP in ketamine induced rats,promote the process of CPP resolution and inhibit the process of relapse.In addition,l-THP combined with ketamine administration significantly inhibited the ketamine-induced increase in DA content in the CPu of the rats.Conclusion The mechanism of l-THP inhibiting the reward effect of ketamine may be related to blocking DA receptors and reducing the release of DA neurotransmitters.l-THP has potential implications for the treatment of ketamine addiction.

Near-infrared spectroscopy is a device used to determine whether traumatic intracranial hemorrhage has occurred and is primarily used for screening in emergency situations. In this study we examined the applicability of this equipment in postmortem inspection. This study included 124 autopsy cases and 59 postmortem inspection cases performed in the National Forensic Service from July 2017 to October 2018. We carried out the test using Infrascanner Model 2000 (Infrascan Inc.). Autopsy cases were divided into four groups (epidural hemorrhage or subdural hemorrhage group, traumatic subarachnoid hemorrhage or cerebral contusion group, nontraumatic intracerebral hemorrhage group, and control group) and analyzed. There was no difference in the test results according to the presence and type of intracranial hemorrhage. The possibility that variables related to postmortem change affected the test results was considered. In conclusion, this study confirmed that near-infrared spectroscopy is not suitable for the detection of traumatic intracranial hemorrhage in postmortem inspection.

Near-infrared spectroscopy is a device used to determine whether traumatic intracranial hemorrhage has occurred and is primarily used for screening in emergency situations. In this study we examined the applicability of this equipment in postmortem inspection. This study included 124 autopsy cases and 59 postmortem inspection cases performed in the National Forensic Service from July 2017 to October 2018. We carried out the test using Infrascanner Model 2000 (Infrascan Inc.). Autopsy cases were divided into four groups (epidural hemorrhage or subdural hemorrhage group, traumatic subarachnoid hemorrhage or cerebral contusion group, nontraumatic intracerebral hemorrhage group, and control group) and analyzed. There was no difference in the test results according to the presence and type of intracranial hemorrhage. The possibility that variables related to postmortem change affected the test results was considered. In conclusion, this study confirmed that near-infrared spectroscopy is not suitable for the detection of traumatic intracranial hemorrhage in postmortem inspection.