Complementary Therapies ; Congresses as Topic ; Humans ; Research

Objective To observe the therapeutic effects of recombinant human granulocyte colony stimulating factor(rhG-CSF)on CCl4 induced chronic liver injury.Methods Male BALB/C mice were randomly allocated into treatment and control groups.The mice model were established by injection with daily for 7 days,while the control mice were received the same volumes of saline.The mice were sacrificed to get weight,liver mass and spleen mass.The count of CD34+ cells and Thy-1+ cells were analyzed by flow cytometry and immunohistochemical staining,respectively.Results The ratio of liver/spleen was 15.94±1.20 and 10.52±0.66 on day 8 and 15 in treatment group,respectively,while those were 7.14±1.68 and 8.31±1.71 in control group,respectively(all P value＜0.05).But there was no significant difference in body weight and liver mass between two groups(P＞0.05)The concentration of album in treatment group was raised rapidly on day 15.The concentrations of alanine aminotransferase (ALT),aspartate aminotransferase(AST),hyaluronic acid(HA)and laminin(LN)on day 30 were significantly lower in treatment group compared to control group(P＜0.05).There was significant difference in score of liver fibrosis on day 30 between two groups(treatment group:5.49±2.16,control:8.74±1.86,P＜0.05).The number of CD34+ cell and Thy-1+ in treatment group(on day 8:9.54±2.24 and 5.10±1.25 and on day 15:8.18±1.93 and 7.53±1.39,respectively)were higher than those in control group(on day 8:5.40±0.99 and 3.25±0.75;on 15 days:4.46±0.77 and 3.35±0.86,all P value＜0.05).Conclusion The rhG-CSF may improve the reparation of chronic liver injury,and may provide a novel method in treatment of liver fibrosis.

Objective To design a new method of determining optical properties of biological tissue by measuring light intensity distribution.Methods The light distribution in Intralipid-10％ suspension at 650 nm was measured by optical fiber probe.The optical parameters were derived from nonlinear regression of the diffusion equation for intensity.The distribution and anisotropy of intensity was abtained by the determined optical parameters and the diffusion equation for intensity.ResultsThis new method was feasible by comparing the experimental data with published results.ConclusionThe experiment results would provide useful information for radiative transfer equation,marine optical remote sensing measurement and laser therapeutic applications.-

This study is to investigate the effect of compound B2 on the damage of PC12 cells induced by serum deprivation and to explore its related mechanisms. The binding characteristics of B2 to rat striatum adenosine A2A receptor was studied by radioligand 3H-MSX-2 binding assay. Cell viability was detected by MTT assay. ROS formation was measured after DCFDA fluorescent staining. B2 has affinity to rat adenosine A2A receptor (K1 = 0.37 micromol x L(-1)). B2 remarkably increased PC12 cell survival rate in serum deprivation-induced PC12 cells. The percentage of serum deprivation-induced death of PC12 was 49.6%, and the treatment of B2 (0.1-100 micromol x L(-1)) increased the cell viability to 63.3%, 74.9%, 86.3% and 88.1%, respectively. Adenosine A2A receptor antagonist SCH 58261 could significantly block the protective effect of B2. The cell viability with 0.1 micromol x L(-1) SCH 58261 decreased by 16.1%, 24.0% and 19.8%, in the presence of B2 (0.1-10 micromol x L(-1)). Serum deprivation-induced ROS formation was 3.5 times more than that of control group, and treatment with B2 significantly and dose-dependently inhibited ROS over-formation. The protective effect of B2 may be related with adenosine A2A receptor. Decrease of serum-deprivation induced ROS formation may also be one of the mechanisms.

BACKGROUND: At present, studies concerning human umbilical cord blood mesenchymal stem cells (UCB-MSCs) transplantation for repair of rat spinal cord injury, brain tumor, and myocardial infarction have been reported, and studies that human UCB-MSCs were induced differentiation into osteogenic cells under certain conditions have also been reported at home and abroad. But application of UCB-MSCs transplantation in the treatment of osteonecrosis of animals has not yet been reported. OBJECTIVE: To observe the repair results of recombinant lentivirus vector tracing enhanced green fluorescent protein (EGFP)-transfected UCB-MSCs transplantation in treatment of ischemic necrosis of the femoral head in rabbits. METHODS: Bone morphogenetic protein-2 gene plasmid, recombinant lentivirus vector carrying EGFP and UCB-MSCs were co-cultured. Rabbit models of femoral head defects were made and randomly divided into 3 groups. There was no treatment in the normal group, control group with bone defects and experimental bone defects filled with UCB-MSCs tracing transfected by recombinant lentivirus vector carrying EGFP. At 4 and 8 weeks after treatment, the imaging and histological of the femoral head were observed.RESULTS AND CONCLUSION: Imaging and histology results showed that there were osteogenic response and new bone formation in the experimental group at 4 weeks, and the bone defects were basically repaired at 8 weeks after treatment. In the control group, the bone defects filled with fibrous connective tissue fiber connective tissues at 4 weeks, and the osteosclerosis could be found surrounding femoral head, bone defects filled with fibrous connective tissue fibers and bone trabecula distributed disorderly. The recombinant lentivirus vector tracing EGFP-transfected into UCB-MSCs has strong effects bone conduction and can repair ischemic necrosis of the femoral head.

Background Evidence-based medicine (EBM) has been widely applied to solve clinical issues internationally,however,the awareness of oculists in China still is dissatisfied,and the relevant issue survey can offer the training guidance.Objective This study was to survey the status of the cognition and practice of EBM in ophthalmologists in China and analyze the problems in their EBM practice.Methods Two hundred and thirty-three ophthalmologists were enrolled in the 18th Congress of Chinese Ophthalmological Society in August,2013.A survey about EBM was performed by self-made questionnaire,including general data from the surveyors,the way and channel of understanding EBM,the attitude toward EBM,clinical practice of EBM and influencing factors.The educational background,professional qualifications,ranked distribution of hospitals which surveyors came from,size of the citys and attribute of hospitals were stratified and analyzed.SPSS 17.0 software was used for statistical analysis.Results A total of 233 questionnaires were distributed,and 233 were regained with the response rate 100％,and 214 valid questionnaires were included,with the effective rate 91.8％.50.5％ of the respondents (104/206) knew EBM in university.The proportion of those believe EBM initially as medical students was 41.8％,and 49.1％ (102/208) were aware of EBM in recent 8 years.And 47.7％ (101/211) believed that EBM should be given priority in clinic,and 7.5％ (16/211) were indifferent to EBM.Only 3.8％ (8/211) surveyors thought EBM to be little important.The proportion of the respondents choosing ‘ know’ or ‘ moderately-know’ were 69.1％ (148/214),35.0％ (75/ 213),21.5％ (46/213) and 57.4％ (121/211) respectively in EBM,Meta analysis,Cochrane as well as Preferred Practice Patterns (PPPs) with a higher receiving degree in well-educated individuals (P =0.000,0.000,0.001,0.000).EBM was well practiced in 11.7％ (25/211) oculists,with a higher using frequency in senior ophthalmologists,and 17.8％ (89/495,frequency) oculists consulted the EBM literature to resolve problems in clinic,with a significant difference in the using frequency of EBM among the different educational background subjects (x2=13.406,P=0.037).The top three barriers which affected the application of EBM in clinical practices were lack of time and the limited energy,feeling it difficult to evaluate the evidence correctly as well as the absence of cases proving the efficacy to treat based EBM.The type of EBM evidence mostly used by respondents was medical database (36.7％),and CNKI (33.5％) and PubMed (38.4％) were the mostly used Chinese and English database,respectively.Respondents who have never searched the Chinese or English database occupied up to 7.3％ and 17.2％,respectively.Conclusions The cognition degree and applying frequency are still lower in ophthalmologists in China.The training of EBM should be strengthened in medical students.The guidance measurement should be taken to encourage eye doctors to apply EBM.

Objective To investigate epidemiological and clinical features of patients with clonorchiasis sinensis infection. Methods The epidemiological, clinical, laboratory and treatment data of clonorchiasis patients in Department of Infectious Diseases, Second Affiliated Hospital, Harbin Medical University from 2002 to 2004 were retrospectively analyzed. Results Sixty-eight point two percent patients had a history of eating raw freshwater fish and shrimp. Patients with occupations as cook, fish stock man, fishing man and fishmonger accounted for 22.6%. The transmission route was not clear in 9.1% of patients. The common clinical manifestations were abdominal pain (60.3%), fatigue (52.3%), diarrhea (33.0%), anorexia (69.3%), jaundice (23.9%), hepatomegaly (59.1%), splenomegaly (8.0%), dizziness (20.9%), fever (5.7%) and biliary colic (14.8%). Twenty-eight point four percent were asymptomatic. Other findings included liver dysfunction (70.4 %) and eosinophile granulocyteosis(69.3 %). Negative rate of stool egg of clonorchis sinensis after treatment with praziquantel or albendazole was 91.9% or 86.5%, respectively. There was no significant difference between the two groups ( χ2 = 0.561, P = 0.454). Conclusions Clinical manifestations of patients with clonorchiasis sinensis are complicated and often accompanied with liver dysfunction. Clonorchiasis sinensis is often misdiagnosed and should be paid much attention.

Objective To investigate the effects of phosphocreatine postconditioning on cerebral ischemia-reperfusion(IR)injury in rats.Methods Thirty-six SD rats were randomly divided into three groups:groups Sham,IR (treated with normal saline)and PCr.IR was induced by intraluminal middle cerebral artery occlusion (MCAO).All treatments were given intravenously at the begining of reperfusion.Twenty-four hours after the reperfusion, neurological deficit score and magnetic resonance scan were performed.serum concentrations of malonaldehyde and 4-hydroxynonenal,cere-bral infarct volume and destruction of cerebral cortex were estimated.Neuronal apoptosis was further assessed by immunohistochemistry and immunofluorescent staining of caspase-3 and NeuN. Results Compared with group IR,phosphocreatine significantly decreased neurological deficit score, infarct volume,malonaldehyde and 4-hydroxynonenal levels(P < 0.05 ).Cortex structure was more complete,as well as neuronal apoptotic index was smaller in group PCr (P <0.05).Conclusion PCr can reduce cerebral infarct volume,thereby promote neurofunctional recovery.The mechanism of Pcr is related to reduced oxidative stress and inhibitted apopotosis during IR.

Objective To explore the correlation between non-Hodgkin lymphoma (NHL) and hepatitis C virus (HCV) infection.Methods HCV infection of 208 NHL patients was investigated from the Affiliated Tumor Hospital of Zhengzhou University.Patients with leukemia or other tumors,and healthy people were used as the control and were pair matched on age and gender.ELISA method was used to detect the HCV-antibody in serum.Results HCV-antibody positive rate in NHL patients [11.5 ％ (24/208)] was significantly higher than those in leukemia patients [3.8 ％ (8/208)] (x2 =8.667,P =0.003),patients with other tumors (6/208,2.9 ％) (x2 =11.639,P =0.001) and healthy people [1.0 ％ (2/208)] (x2 =19.856,P =0.000).Conclusion HCV infection is related to NHL in Henan area.

OBJECTIVETo study the protective effect of Ligustrazine Injection (LI) against cisplatin-induced ototoxicity and to explore its mechanism.

METHODSThirty healthy adult guinea pigs were randomly divided into three groups, 10 in each group, i.e., the normal control group, the cisplatin group, and the LI group. Guinea pigs in the normal control group were intraperitoneally injected with normal saline at 3 mL/kg for 7 consecutive days. Those in the cisplatin group were intraperitoneally injected with cisplatin at 3 mg/kg for 7 consecutive days. Those in the LI group were intraperitoneally injected with LI at 140 mg/kg for 7 days, but cisplatin (3 mg/kg) was intraperitoneally injected from the opposite side starting from the 4th day. Brainstem auditory evoked potential (BAEP) was performed in all animals before and after injection. All animals were sacrificed after the final testing under anesthesia and their cochleas collected. Half the cochleas of each group were collected for silver nitrate staining of cochlear basilar membrane stretched. The other half the cochleas of each group made into paraffin sections to observe the apoptosis of cochlea cells by TUNEL method and the expression levels of c-Jun detected by immunohistochemistry.

RESULTSThere was no statistical difference in the difference of BAEP threshold among the 3 groups before injection (P > 0.05), but the BAEP threshold increased in the cisplatin group and the LI group (P < 0.05). Besides, it was higher in the cisplatin group (P < 0.05). In the cisplatin group, most hair cells were missing, spiral ganglion cells obviously decreased, more TUNEL positive cells occurred, and the expression of c-Jun was stronger. But the aforesaid impairment in the LI group was obviously lessened (P < 0.05).

CONCLUSIONSLI showed certain antagonist effect on cisplatin-induced ototoxicity. Its mechanism might be associated with scavenging oxygen radicals of the cochlea tissue, improving the microcirculation, and fighting against apoptosis.

Animals ; Apoptosis ; drug effects ; Cisplatin ; toxicity ; Cochlea ; drug effects ; metabolism ; pathology ; Evoked Potentials, Auditory, Brain Stem ; Guinea Pigs ; Pyrazines ; pharmacology ; Reactive Oxygen Species ; metabolism