Objective To explore the method for differentiation induction of leukemia cells into dendritic cells(DC) by A23187 in vitro. Methods Chronic myeloid leukemia K562 cells were cultured with A23187 or cytokine to induce differentiation and form DC. The morphologic features of cells were observed under inverted microscope, the changes of DC surface marks were determined by flow cytometry and RT-PCR, the ability to stimulate lymphocyte proliferation was tested by MTT colorimetry. Results Under the condition of the does (385 ng/ml) of A23187 for four days, some of K562 cells were found in typical dendritic appearance.The expression of DC markers CD1a,CD83 ,HLA-DR,CD86 and CD80 was 6.65 ±2.70,7.37 ±2.40,6.24 ±4.29, 21.60 ± 3.84, 18.52 ± 4.48 repectively, and increased obviously compared with the negative control group(2.80 ±0.52,1.85 ±0.56,2.25 ±0.47,6.69 ±0.83,9.96 ±3.53). The differences had statistical significance (P < 0.05). K562 cells derived from DC acquired the ability to stimulate lymphocyte proliferation.Conclusion A23187 can induce the leukemia cells differenntiation into activated DC-like cells rapidly.

Antigens, CD ; metabolism ; Antigens, Differentiation, Myelomonocytic ; metabolism ; Face ; microbiology ; Female ; Humans ; Middle Aged ; Mycobacterium avium Complex ; isolation & purification ; Mycobacterium avium-intracellulare Infection ; metabolism ; microbiology ; pathology ; Nasal Cavity ; microbiology ; Nose Diseases ; metabolism ; microbiology ; pathology ; Vimentin ; metabolism

Aged ; Carcinoma, Squamous Cell ; pathology ; surgery ; Cholecystectomy ; Gallbladder Neoplasms ; pathology ; surgery ; Humans ; Male

OBJECTIVETo observe the effect of Yangxue Qingnao Granule (YQG) on the expression of CD11b in CA1 region of hippocampus of vascular dementia rats, and to explore its regulation on microglias.

METHODSTotally 144 SD rats were randomly divided into the sham-operation group, the vascular dementia model group (model), and the YQG treated group (treated). The vascular dementia rat model was prepared by modified Pulsinelli's four-vessel occlusion. Rats in the sham-operation group and the model group were administered with normal saline -(at the daily dose of 10 mL/kg) by gastrogavage, while those in the treated group were administered with YQG (0.32 g/mL, at the daily dose of 10 mL/kg) by gastrogavage. All administration was performed once per day for 8 successive weeks. The expression of CD11b in CA1 region of hippocampus of vascular dementia rats was detected at week 1, 2, 4, and 8, respectively.

RESULTSCompared with the sham-operation group, the expression of CD11b in CA1 region of hippocampus of vascular dementia rats were significantly enhanced in the model group at each time point (P < 0.01). Compared with the model group, the expression of CD11b in CA1 region of hippocampus of vascular dementia rats significantly decreased in the treated group at each time point (P < 0.01), especially at week 2.

CONCLUSIONObvious activation and proliferation of microglias could be seen in CA1 region of hippocampus of vascular dementia rats, and YQG could inhibit activation and proliferation of microglias.

Animals ; CA1 Region, Hippocampal ; drug effects ; metabolism ; CD11b Antigen ; metabolism ; Dementia, Vascular ; drug therapy ; Disease Models, Animal ; Drugs, Chinese Herbal ; pharmacology ; Microglia ; drug effects ; Random Allocation ; Rats ; Rats, Sprague-Dawley

Based on the results of the morphologic studies on genus Dioscorea, the paper summarized the entire chemical constituent that isolated from this genus and analyzed it with the methods of chemotaxonomy. The rules of the chemical constituent and pharmacodynamic effects were analyzed. Seventeen species which belong to Sect. Stenophora Uline of Dioscorea contain steroidal sapogenin. Other species with different main components such as polysaccharide and tannin have have different effects. This chemotaxonomic view point will conduce to establish a phylogeny of the genus Dioscorea.
Animals ; China ; Dioscorea ; chemistry ; classification ; genetics ; growth & development ; Humans ; Phylogeny ; Plant Extracts ; chemistry ; pharmacology

Objective To investigate the value of ~1H-MRS in the diagnosis and prognosis of diffuse axonal injury(DAI).Methods A prospective imaging study was performed in 63 patients with craniocerebral injury admitted from October 2002 to April 2004.Sixty-three patients were divided into DAI group(27 cases)and Non-DAI group(36 cases)according to the result of the MRI.Then,the ratio of NAA/Cr,Cho/Cr,mINs/Cr,and GIx/Cr at basal ganglia and genu and splenium of corpus callosum was quantified using ~1H-MRS and compared between DAI group and Non-DAI group.Twenty healthy persons were served as control group.The relation between ~1H-MRS indexes and period of primary uneonciousness post-injury was analyzed.Results The results of NAA/Cr and Cho/Cr at genu and splenium of corpus callosum and basal ganglia of control group were 1.19?0.18,1.21?0.24;1.89?0.17,1.84?0.14; 1.57?0.16,1.85?0.25,which of DAI group were 0.83?0.24,2.92?0.78;1.25?0.35,2.54? 0.42;1.33?0.17,2.38?0.44,and those of Non-DAI group were 1.11?0.23,1.61?0.33;1.61? 0.22,1.93?0.26;1.49?0.23,1.89?0.29.The differences between them were statistically significant (P

Objective: To study the effects of TNFα on wound healing. Methods: The skin lesion and incisions were made on mice and rhTNFα was applied in both skin lesion and incision. Tissue strips were evaluated for tensiometry and histologic features after healing. Results: It was found that rhTNFα markedly improved wound healing both in skin lesion and incision wound model, it also markedly enhanced the breaking strength of treated incision and increased wound cellularity in rh TNF α treated groups. Conclusion: The results suggest that TNFα play an important role in regulating inflammatory reactions of local injured tissues and it may improve the functions of fibroblasts, mononuclear phagocytes and endothelial cells. rhTNFα of suitable doses can promote wound healing. This shows that TNFα, as a wound healing promoter, has the potentials for clinical application.

Objective ① To investigate the level of the vitamin D endocrine system in peripheral relationships with bone mineral density (BMD) and the disease activity respectively. Methods The level of the 25-hydroxylate vitamin D3 (25OHD3) and 1,25-dihydroxyvitamin D3 [1,25(OH)D3] in plasma from 43 SLE patients and 44 normal controls were detected by enzyme linked immunosorbent assay. Vitamin D receptor (VDR) gene expression was determinied by real-time PCR in peripheral blood. BMD measurements in the lumbar spine (L1-4) and left proximal femur (femoral neck) were performed using dual X-ray absorptiometry before treatment. The relationship between the vitamin D endocrine system and the bone mass were studied. We also discussed the relationship between the vitamin D endocrine system and the disease activity. Results The levels of 25OHD3 and 1,25 (OH)2D3 were lower in the initial SLE patients than normal controls (P<0.01, P<0.01). The expressions of VDR gene were significantly increased in initial SLE compared with normal controls (P<0.01). The initial SLE patients had significantly lower BMD values, and higher frequency of osteopenia (35%) at both sites of measurement compared with matched healthy controls (P<0.01). The initial SLE patients were divided into two groups by BMD, abnormal group and normal group. There were no differences in 25OHD3, 1,25 (OH)D3 and VDR gene expression (P0.05). There was no correlation between the vitamin D endocrine system and BMD in initial SLE patients. There was no correlation between the vitamin D endocrine system and the disease activity either. Conclusion Vitamin D endocrine system may play an important role in SLE, but the level of VDR gene is not correlated with BMD and disease activity.

Objective To evaluate the expression of macrophage migration inhibitor factor (MiF) and cyclinD1 in pancreatic carcinoma and their relationships with clinical pathology characteristics. Methods The expression of MIF and eyclinD1 in 89 carcinoma and 5 normal pancreatic tissues was detected with immunohis-tochemistry methods, and the relationships among MIF and cyclinD1 expression and clinicopathological factors were studied. Results The overexpression of MIF and cyclinD1 was found in 88.8%, and 50. 6% of pancre-atic carcinoma tissues respectively. The overexpression of MIF had a significant correlation with Ⅰ,Ⅱ,Ⅲ,Ⅳ tumor stage (69. 2%, 94. 7%, 96. 4%, 100%, P <0.05), while the positive expression rate of cyclinD1 only had a significant correlation with tumor stages Ⅲ,Ⅳ (33. 3%, 68. 8%, P <0. 05). Both of the two proteins had a correlative tendency with pathological grade and lymph node metastasis. The different expression of MIF between pancreatic carcinoma with and without liver metastasis had no statistical significance, (100% ,85.9%, P >0. 05)while there was a statistically significant difference about cyclinD1 (66. 7% ,46. 5% ,P <0. 05). A significant positive correlation was also found between MIF and cyclinD1 (P < 0. 05). Conclusion The ex-pression of MIF and CyclinD1 was higher in pancreatic cancer tissues than in normal tissue, and they may be associated with the malignant stage, tumor differentiation, local lymph node and liver metastasis of this tumor.

Objective To study the clinical and radiographic characteristics of complicated axis fractures combined with adjacent segment instability and explore reasonable surgical treatment strategy. Methods A retrospective study was performed on 21 patients with axis fractures treated from August 2003 to June 2009. There were 14 males and 7 females at mean age of 34 years. The treatment strategy was based on the fracture type and the stabilities of adjacent atlantoaxial joint and intervertebral C2/3.Treatment strategies included anterior C2/3 interbody discectomy and fusion, anterior cervical plate internal fixation, odontoid screw fixation, posterior C1-2 pedicle screw fixation, cervical lateral mass screw fixation or combined anteroposterior approach. Results All patients were immobilized in a hard collar for thee months and followed up for 6-36 months (average 12 months), which showed bony fusion and cervical stability, with no intraoperative surgery-related complications such as loosening, extrusion or breakage of fixation, vertebral artery injury, nerve damage, cerebrospinal fluid leakage or wound infection. Neurological recovery was observed in five patients. Conclusions For complicated atlas fractures, correct identification of fracture type and instability disturbance of adjacent atlantoaxial joint and C2/3 as well as active treatment can conduce to better effect.