Rats were subjected to 15% body surface area third degree burns combined with 2 , 4 , 6 , and 8 Gy irradiation respectively. 48 hours after injury, the DNA and RNA contents of the bone marrow, lymph nodes, spleen and peripheral blood were found to have marked reduction, which became more marked when the dosage of the radiation was increased. Furthermore, it was found that the DNA content decreased more rapidly than the RNA content and the chnage of RNA was more marked in the hemopoietic tissues than in the peripheral blood. Nucleic acid reduction occurred more severely following 2 Gy irradiation than following 15% BSA third degree burns. After the combined iujury of 8 Gy irradiation and burns, th? reduction of nucleic acids in all the above-mentioned tissues exceeded 50%.The mechanism of the changes of necleic acids in the hemopoietic tissues after combined injury of radiation and burns was discussed. Radiation played a more important role than burns in resulting in the reduction but the synergistic effect of burns could not be neglected and could be clearly demonstrated.

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Moxibustion ; Spondylosis ; therapy ; Treatment Outcome

Objective To study the influence of carbon dioxide (CO2)gas temperature on recovery of patients after laparoscopic gastrointestinal operation.Methods 100 cases with gastrointestinal operation patients were selected and randomly divided into the experimental group and the control group with 50 patients in each.In the experimental group,pneumoperitoneum was established with CO2 gas heated to 37 ℃,and the control group used routine method to establish pneumoperitoneum.The items such as postoperative tracheal extubation time,anal exhaust time and extubation time were observed in two groups of patients.Results The endotracheal tube extubation time,anal exhaust time and extubation time in the experimental group were earlier than those in the control group.Conclusions Using CO2 gas heated to 37 ℃ to establish pneumoperitoneum during laparoscopic gastrointestinal operation can effectively promote the rehabilitation of patients after operation.

Salteffectinhigh-voltageassistedlaserdesorptionionizationmassspectrometry(HALDI-MS)has been studied under both positive and negative ion modes using L-tyrosine, β-cyclodextrin, α-lipoic acid, as well as the complex formed between α-lipoic acid and β-cyclodextrin as the test analytes. Compared the mass spectra obtained with and without the addition of salt, it is found that HALDI-MS can tolerate a higher amount of salt than electro spray ionization mass spectrometry ( ESI-MS) . Also, the addition of salt can enhance the HALDI-MS signal intensity of the complex ion of α-lipoic acid and β-cyclodextrin, and we suggest that such signal-enhancement effect is due to the formation of the three component complex consisting of α-lipoic acid,β-cyclodextrin and the positive ion of the salt.

BACKGROUND: Bone marrow mesenchymal stem cells (BMMSCs) can be induced differentiating into osteoblasts and chondroblasts, DNA methylate depressant 5-azacytidine can induce BMMSCs expressing myogenic regulating factors: Myf5 and myopoietin, which involving in the differentiation of BMMSCs into myoblasts.OBJECTIVE: Muscular traumatic fluid containing the highest protein content was screened out and co-cultured with BMMSCs,in order to explore the inductive effect on the proliferation and myogeneis of BMMSCs.DESIGN : Standardized comparative study.SETTING .:At State Key Laboratory of Trauma, Bums and Combined Injury,Institute of Combined Injury, Medical College of Preventive Medicine, Third Military Medical University of Chinese PLA.MATERIALS: Muscular traumatic model was established on 18 Balb/C pure rats for the extraction of muscular traumatic fluid, the inductive effect of the fluid on BMMSC was then compared with 5-azacytidine.METHODS:This study was carried out at State Key Laboratory of Trauma,Burns and Combined Injury, Institute of Combined Injury, College of Preventive Medicine, Third Military Medical University of Chinese PLA from April 2001 and September 2003. Bradford colorimetric was used to detect the protein content in the muscular traumatic fluid, and the fluid with the highest protein was used to co-culture with BMMSC, whose effect on the proliferation of BMMSC was measured with MTT methods at day 0, 3, 6, 9, 12, 15.RT-PCR technique was used to detect the expression of myopoietin at day 6,with its myogenic effect compared with that of 5-azacytidine.fluid on BMMSC.eration of BMMSC: the proloferative activity of BMMSC in traumatic fluid genic effect of traumatic fluid on BMMSC: myopoietin could not be found expressed in traumatic fluid group, but strongly expressed in 5-azacytidine group.CONCLUSION: Muscular traumatic fluid can promote the proliferation of BMMSC, but has no myogenic effect.

Aim To investigate the role of physiological concentration of glucocorticoids on the inflammation mediator IL-6 expression in response to LPS in rat alveolar epithelial cells(CCL149).Methods The CCL149 were treated with LPS,H2O2 and glucocorticoid respectively.Flammtory mediator IL-6 protein expression was measured with ELISA,and the activity of histone deacetylase(HDAC) was measured using colorimetric HDAC activity assay kit.Results IL-6 protein levels were increased in cells exposed to 10 mg?L-1 LPS.Hydrocortisone decreased IL-6 protein expression induced by LPS.Such effect of hydrocortisone was blunt by HDAC inhibitor trichostatinA treatment(10 ?g?L-1).LPS decreased HDAC activity.Hydrocortisone increased HDAC activity.The expression of IL-6 protein induced by LPS was further enhanced by H2O2 treatment.Pretreatment with H2O2 resulted in the inhibition of antiflammtion effect of glucocorticoids.Conclusion Physiological concentration of glucocorticoids could suppress inflammatory response,and this effects requires recruitment of HDAC.Oxidants such as H2O2 may cause the failure of glucocorticoids to function effectively,and the reason may be related to the reduction of HDAC activity.This mechanism may contribute to the pathogenesis of pulmonary disorder.

OBJECTIVE:To study the effects of nimesulide combined with oxaliplatin on microvessel density and immune func-tion of esophageal cancer model rats. METHODS:48 rats were selected to establish esophageal cancer model and then randomly di-vided into model group,oxaliplatin group,nimesulide group and combination group,with 12 rats in each group. 1 d after model-ing,model group was given 5% Glucose injection 1 mL via tail vein,3 times a week,and constant volume of Sodium carboxy-methylcellulose solution,once a week. Oxaliplatin group was given oxaliplatin 13.6 mg/kg via tail vein,3 times a week. Nimesu-lide group was given nimesulide 20 mg/kg intragastrically,once a week. Combination group was given oxaliplatin and nimesulide with same usage as above. The administration lasted for 8 weeks. The cancer growth,microvessel density of cancer tissue,peripher-al blood immune function index were observed in four groups. RESULTS:Compared with model group,cancer size,cancer weight,integral absorbance of cancer and positive vessel density were all decreased in treatment groups(P<0.05). The number of peripheral blood CD3+,CD4+T cells and CD4+/CD8+were all decreased in oxaliplatin group and combination group,while the num-ber of CD8+T cells was decreased(P<0.05). Compared with nimesulide group,cancer size,cancer weight,integral absorbance of cancer,positive vessel density,the number of peripheral blood CD3+,CD4+T cells and CD4+/CD8+ were all decreased in oxaliplat-in group and combination group,while tumor inhibition rate and the number of CD8+T cells were all increased(P<0.05);combi-nation group was more significant than oxaliplatin group (P<0.05). CONCLUSIONS:Oxaliplatin combined with nimesulide can effectively inhibit cancer growth of esophageal cancer,the mechanism of which may be associated with inhibiting angiogenesis of tumor tissue and strengthening immune function.

Objective To observe the changes of the peripheral blood T helper (Th)17 cells/regulatory T cells (Treg) ratio in patients with anti‐tuberculosis drug‐induced liver injury ,and to explore the relationship between Th17/Treg ratio and liver function . Methods Ninety inpatients with the diagnosis of secondary pulmonary tuberculosis (TB) from Affiliated Hospital of Zunyi Medical College from Feb .2013 to Mar .2015 were included in this study .All these patients had normal base line liver function .After 2 weeks of anti‐TB chemotherapy ,21 patients with alanine transaminase (ALT) and/or aspartate aminotransferase (AST) ≥2 × upper limit of normal (ULN) were defined as TB with liver injure group ,the other 69 patients with ALT and/or AST<2 × ULN were defined as TB with non‐liver injured group .Before treatment and two weeks after anti‐TB therapy ,the peripheral blood Th17/Treg ratios and liver functions of all patients in both groups were detected in order to compare the changes of Th17/Treg ratios pre and post anti‐TB chemotherapy and to explore the relationship between Th17/Treg ratio and ALT/AST levels .Student′s t test was used for statistical analysis ,and Pearson correlation analysis was used for correlation test .Results Before treatment ,there was no statistical significance of Th17 ,Treg and Th17/Treg ratio between groups (P> 0 .05) .The Th17 levels in TB with liver injured group ([2 .522 ± 0 .388]/mL vs [2 .075 ± 0 .369]/mL ,t=3 .633 ,P<0 .01) and TB with non‐liver injured group ([2 .326 ± 0 .348]/mL vs [1 .929 ± 0 .402]/mL ,t= 6 .468 , P< 0 .01) ,and Th17/Treg ratios in both groups(0.618±0.104vs0.489±0.107,t=3.553,P<0.01 ;0.554±0.108vs0.450±0.098,t=6 .353 ,P<0 .01) were all increased after anti‐TB chemotherapy ,with statistically significant differences . However ,there was no statistical significance of Treg levels pre and post anti‐treatment in both groups (both P>0 .05) .The Th17 level and Th17/Treg ratio in TB with liver injured group were significantly higher than those in TB with non‐liver injured group (t= 2 .203 , P< 0 .05 and t= 2 .345 , P< 0 .05 , respectively) .In liver injured group ,the Th17/Treg ratio was positively correlated with ALT level (r=0 .849 ,P=0 .044) ,but not with AST level (P>0 .05) .Conclusion The changes of Th17/Treg ratio are related with anti‐TB drug‐induced liver injury in patients with secondary pulmonary tuberculosis .

OBJECTIVE: To establish a HPLC method for simultaneous determination of metronidazole and chloram. phcnicol in comedo cream. METHODS: The method included a Diamonsil C18 column (250mm ? 4.6mm, 5?m) and methanol water(50 : 50,v/v)as the mobile phase and an ultraviolet detecting wavelength of 280nm .RESULTS:The calibralion curve was linear in a concentration range of ( 10 - 250)?g/ml of both metronidazole and chloramphenicol (r = 0.9 998) .The average recoveries of metronidazole and chloramphenicol were 100.53% , 100.53% and RSD were 0.79% , 0.56% respectively .CONCLUSION:The method for the determination of metronidazole and chloramphenicol was rapid and convenient. It can be used for the quality control of metronidazole and chloramphenicol in cream.

Objective To explore the application of reading education in cultivating nursing students' humanities in vocational college.Methods Nursing students were selected at random and divided into two groups,35 students in the experimental group and 50 in the control group.The students in the experimental group were given the 2-year related instruction through reading activities in the light of the principle enhance general humanities foundation in the first grade and strengthen humanistic features in the second grade.Nursing skill assessment and questionnaire oriented to humanities were used to test the educational effect.Results The result of nursing skill assessment in the experimental group was significantly better than that of the control group.The score of humanities' moral,law,culture and aesthetic dimension and the total score of the experimental group were significantly better than those of the control group.Conclusions Well targeted reading is effective in the cultivation of nursing students' humanities.Meanwhile reading education can serve as an important and beneficial way to improve the cultivation mode of vocational college's nursing humanities.