OBJECTIVE: To evaluate the age, sex, etiology, diagnosis and treatment time of nasal bone fractures. METHOD: Clinical data of 202 cases with nasal bone fractures treated in the hospital were retrospectively analysed. RESULT: A total of 202 cases,163 men (80. 7%) and 39 women (19. 3%). Fifty-two patients had a relationship with alcohol consumption, and all of them were males. The most frequent reasons of the injury were fight 46. 5% (94 cases) followed by falling-down 21. 3% (43 cases), traffic accidents 19. 3% (39 cases), works related 6. 5% (13 cases), sport injuries 5. 9% (12 cases) and others 0. 5% (1 cases). Patients distribution in seasons were: spring 54 cases (26.7%), summer 42 cases (20.8%), autumn 58 cases (28.7%), winter 48 cases (23. 8%). Diagnosis of nasal bone fractures were made positively by x-ray films in 79. 7% of cases, but 100% by CT. Positive predictive value of CT was superior to that of X-ray films in the diagnosis of nasal bone fracture. CONCLUSION High morbidity of nasal bone fracture was seen in the age group of 20-29 years, and predominantly in male. Fight was found to be the main etiologic factor. We think that CT is necessary for diagnosing nasal bone fracture.
Adult ; Facial Bones ; Female ; Fractures, Bone ; complications ; epidemiology ; Humans ; Male ; Nasal Bone ; injuries ; Nose Diseases ; Retrospective Studies ; Risk Factors ; Seasons ; Skull Fractures ; complications ; epidemiology ; Violence ; Young Adult

Objective To investigate the role of r-aminobutyric acid B receptor in the development of liver fibrosis.Methods Thirty-two Sprague-Dawley (SD) rats were divided into four groups including a control group,a model group,a baclofen group,and a CGP35348 group.Liver fibrosis was then induced by carbon tetrachloride (CCl4).Baclofen and CGP35348 treatment were carried out after the formation of liver fibrosis,followed by complete extraction of the eyeball to obtain blood sample to test liver function.Liver tissue specimens were cut and stored for histological staining,histochemistry,real-time polymerase chain-reaction (RT-PCR),and western blot analysis.Results Histological staining indicated that the degree of liver fibrosis was more severe in the CGP35348 group than in the baclofen group (P＜0.001).The levels of alanine transaminase (ALT),aspartate aminotransferase (AST),gamma-glutamyl transferase (GGT),total bilirubin (TBil),and direct bilirubin (DBil) were significantly lower in the baclofen group than in the CGP35348 group (P＜0.01).The levels of ALT,AST,GGT,TBil,and DBil were significantly higher in the CGP35348 group than in the model group (P＜0.05).Immunofluorescence results show that the hepatic cell migration was inhibited in the baclofen group.Western blot results showed that the expression levels of α-SMA protein were significantly lowered in the baclofen group when compared to that of the CGP35348 group and model group (P＜0.01).Conclusion GABAB receptor might play a role in the liver protection by inhibition of migration of hepatic cells in liver fibrosis.Further studies into the mechanism behind this function are further needed and may be a potential source of future anti-fibrotic treatment.

Objective To investigate the reasons and the methods of prevention and cure for serious complications of radiofrequency ablations in the treatments of hepatocellular carcinomas. Methods A total of 410 patients with BCLC at A or B stage of hepatocellular carcinomas in our hospital were enrolled between November 2014 and June 2009. These patients underwent a total of 504 times radiofrequency ablations for the treatments of liver lesions. This retrospective study analysed the reasons and the strategies of prevention and cure for the serious complications. Results In the patients with a total of 504 times radiofrequency ablations, 2 patients had massive hemorrhage caused by puncture injuries, 2 patients had the tumors which were close to the liver capsules and 1 patient had bile peritonitis caused by the injury of thermal ablation on the gallbladder. The maximum diameter of tumor was 5 cm. That tumor was close to the gallbladder. 2 patients had needle tract metastases caused by incompletely needle path ablations. 1 of the 2 patients had a tumor near the liver capsule, and the other patient had un-enough temperature for needle path ablation. Tumor outbreaks were happened in 2 patients. 1 of the 2 patients had a tumor which was located in the liver capsule and close to the portal vein. The other patient had a 12 cm diameter tumor with rich blood supplement. 2 patients had liver abscesses. 1 of the 2 patients had a tumor near the ascending colon, and the other patient had diabetes. 1 patient had colonic perforation caused by thermal ablation. The tumor in that patient was located in the right hepatic lobe segment and adjacent to the ascending colon. The incidence of serious complications was 1.98% (10/504). Conclusions The incidence of the serious complications of radiofrequency ablations for the treatments of hepatocellular carcinomas is relatively low. The main reasons for the serious complications were direct injuries caused by punctures, heat radiation injuries, tumors adjacent to large blood vessels, gallbladders and intestines, tumors with abundant blood supplement, needle paths fail to cross normal liver tissues, low scores of liver function, weak immune system and diabetes. The key points for avoiding and reducing the serious complications are preoperative evaluations of patients' basic situations, choices of appropriate puncture channels and control ranges of ablations when tumors are close to important blood vessels, intestines and gallbladders.

Objective To evaluate the effect of bone marrow mesenchymal stem cell (BMSC) on the expression of interleukin (IL)-10 and tumor necrosis factor (TNF)-α in mice with ischemia-reperfusion acute kidney injury (IR-AKI). Methods All mice were randomly divided into the sham operation group (control group), ischemia-reperfusion injury group (IRI group) and BMSC treatment group (BMSC group), with 6 mice in each group, respectively. The renal function and pathological changes of mice were detected. The cell apoptosis of renal tissues of mice was determined. The expression levels of serum IL-10 and TNF-α of mice were quantitatively measured. The mouse BMSC was randomly divided into the control and hypoxia-reoxygenation groups (IRI group), and the expression levels of IL-10 and TNF-α in cell supernatant were determined. Results The renal structure of mice was normal in the control group, severe damage was observed in the IRI group, and mild damage occurred in the BMSC group. Compared with the control group, the renal tissue injury scores were significantly higher in the IRI and BMSC groups (both P < 0.05). Compared with the IRI group, the renal tissue injury score was significantly lower in the BMSC group (P < 0.05). Compared with the control group, the levels of serum creatinine (Scr) and blood urea nitrogen (BUN) were remarkably up-regulated in the IRI group, and the level of BUN was significantly up-regulated in the BMSC group (all P < 0.05). Compared with the IRI group, the levels of Scr and BUN were significantly down-regulated in the BMSC group (both P < 0.05). In the IRI group, the quantity of apoptotic cells in the renal tissues was considerably higher than those in the BMSC and control groups, and the quantity of apoptotic cells in the BMSC group was significantly higher than that in the control group (all P < 0.05). Compared with the control group, the levels of serum IL-10 and TNF-α were significantly up-regulated in the IRI group, whereas the level of serum TNF-α was significantly down-regulated and the level of serum IL-10 was significantly up-regulated in the BMSC group (all P < 0.05). Compared with the IRI group, the levels of serum IL-10 and TNF-α were significantly down-regulated in the BMSC group (both P < 0.05). The levels of IL-10 and TNF-α in the cell supernatant did not significantly differ between the IRI and control groups (P=0.080、0.627). Conclusions BMSC infusion may reduce the incidence of renal IRI and inflammation, probably via the mechanism of down-regulating TNF-α expression rather than up-regulating IL-10 expression.

Objective:To explore the characteristics of executive function and alterations in monoamine neurotransmitters in methamphetamine-dependent adolescents and to analyse the relationship between executive function and monoamine neurotransmitters.Methods:From January to March 2017, totally 50 female methamphetamine-dependent adolescents and 50 male methamphetamine-dependent adolescents were selected as the experimental group in two compulsory isolation drug rehabilitation centres in Sichuan Province, while normal adolescents (50 males and 50 females) matching the age and gender of the experimental group were recruited as the control group in a school.Executive function was tested by the N-back test, colour word interference test and Hanoita test, and serum levels of dopamine, 5-hydroxytryptamine, epinephrine and norepinephrine were measured using high-performance liquid chromatography with fluorescence detection.Statistical analysis was performed by SPSS 21.0 software.The t-test was used to compare the differences of executive function between the experimental group and control group, and Pearson correlation analysis was used to assess the correlation between executive functions and monoamine neurotransmitters in the experimental group. Results:The differences in the number of correct 0-back responses ((105.38±17.00) vs (114.05±5.29) ) and correct response time ((728.82±110.95) ms vs (652.24±89.88) ms), number of correct 2-back responses ((54.78±23.04) vs ( 74.01±12.01)) and correct response time ((585.74±245.35) ms vs (477.44±181.26) ms), the number of correct responses in the Stroop task ((29.68±7.19) vs (33.60±7.36)) and correct response time ((973.73±228.27) ms vs ( 916.11±98.54) ms), and the number of TOH movement steps ((99.42±32.83) vs (87.70±32.55)) were statistically significant in the experimental group compared to the control group(all P<0.05). In the experimental group, serum dopamine ((5.06±1.55) μg/mL vs (3.18±1.97) μg/mL), 5-hydroxytryptamine ((351.94±119.90) ng/mL vs (149.27±69.24) ng/mL), epinephrine ((555.66±225.55) ng/mL vs (129.20± 81.39) ng/mL), and norepinephrine ((3.63±0.96) ng/mL vs (2.03±0.64) ng/mL) were higher than those in the control group, all with statistically significant differences (all P<0.01). Correlation analysis of executive function with monoamine neurotransmitters showed that serum dopamine level in the experimental group was correlated significantly with the number of correct 0-back, 2-back responses, correct response time, and TOH movement steps ( r=-0.194, 0.170, -0.163, 0.198, 0.196, all P<0.05), 5-hydroxytryptamine level was negatively correlated with the number of correct 0-back, 2-back responses( r=-0.267, -0.375), and was positively correlated with correct response time ( r=0.243, 0.177). Adrenaline content was significantly correlated with the number of correct 0-back and 2-back responses, correct response time, and the number of correct Stroop test responses, correct response time ( r=-0.340, 0.212, -0.415, 0.170, -0.212, 0.178, all P<0.05). Norepinephrine level was correlated significantly with the number of correct 0-back responses, correct response times, correct 2-back responses, correct Stroop test responses, and TOH movement steps ( r=-0.245, 0.266, -0.291, -0.193, 0.226, all P<0.05). Conclusion:The executive function of methamphetamine-dependent adolescents is damaged to a certain extent and the content of monoamine neurotransmitter in serum is increased.There is a correlation between impairment in executive function and serum levels of monoamine neurotransmitters.

Objective To evaluate the effect of γ-aminobutyric acid (GABA) and its receptors upon the proliferation of CD8+T cells.Methods The splenic CD8+T cells of Balb/c mice were obtained by CD8+f cell magnetic bead sorting kit.Under the effect of CD3/CD28-activated magnetic bead,CD8+T cells were stimulated by different concentrations of GABA.5-bromo-2-deoxyuridine (BrdU) labeling and flow cytometry were performed to detect the proliferation of CD8+T cells.The expression levels of GABA-A and GABA-B receptor before and after CD8+T cell activation were compared by fluorescent quantitative real-time polymerase chain reaction (PCR).Result Flow cytometry result revealed that GABA could inhibit the proliferation of activated CD8+T cells,manifested as significant decrease in the quantity of CD152+CD8+T cells.Fluorescent quantitative real-time PCR demonstrated that GABA-A receptor subtypes α2,α6 and GABA-B receptor subtype 1a were expressed only when the CD8+T cells were activated.After CD8+T cell activation,the quantity of GABA-A receptor subtypes α3,αs,β2,β3,γ1,γ2 and θ were significantly increased,whereas the quantity of GABA-B2R and GABA-B1b did not significantly differ before and after CD8+T cell activation.Conclusions GABA can suppress the proliferation of activated CD8+T cells.The activation of CD8+T cells is regulated by GABA receptors.However,the underlying mechanism remains to be elucidated.

The First Affiliated Hospital of Xi'an Jiaotong University has established pediatric MOOCs courses, including the formation of excellent MOOC teachers, the curriculum planning and design of MOOCs, making MOOCs videos, and using MOOCs for teaching activities. The MOOCs for teaching is intuitive, the courses are interesting, and the learning time is flexible. Besides, it is open and resources-sharing, and it also can increase the educational equity. At the same time, it can reduce teachers' burden, improve teaching ability, and improve learning ability of students. Most students and teachers agree that MOOCs are worthy of promotion and application.

Objective To investigate the change rules and its significance of erythrocytes surface molecule CD35 , CD58 and CD59 expression in recipients infected with cytomegalovirus (CMV)after renal transplantation. Methods Eighty-two recipients undergoing allogeneic renal transplantation were selected and divided into the negative (n=21 )and positive CMV groups (n=61 )based on the qualitative detection of CMV-pp65 antigen in peripheral blood. According to the results of CMV-pp65 (+)leucocyte count,all 61 patients in positive CMV group were further divided into low (n=55)and high active infection subgroups (n =6 ). Healthy adults were recruited into the normal control group (n =30 ). The expression levels of CMV-pp65 antigen,erythrocytes surface molecule CD35,CD58 and CD59 were measured by flow cytometry. Results Compared with normal control group,the expression levels of erythrocytes surface molecule CD35 , CD58 and CD59 in the positive CMV group were significantly down-regulated,and the CD35 and CD59 expression in the negative CMV group were considerably down-regulated (all P<0. 05 ). Compared with negative CMV group,the expression levels of CD58 and CD59 in the positive CMV group were significantly down-regulated (both P<0. 05 ). The expression levels of CD35 and CD59 in the high active infection subgroup were significantly lower than those in the low active infection subgroup (both P<0. 05 ). Conclusions The more severe active CMV infection after renal transplantation,the lower expression of erythrocytes surface molecule CD35,CD58 and CD59,hinting that red cell immune dysfunction is probably involved with active CMV infection.