OBJECTIVETo investigate the changes in perioperative expression level of CD11/CD18 of neutrophils in children undergoing cardiac surgery with cardiopulmonary bypass (CPB).

METHODSThirty children patients with congenital heart disease underwent cardiac surgery with CPB (CPB group) and the control group consisted of 20 children who received thoracic or general surgery without CPB. Blood samples were drawn at the following time points: pre-surgery, 15 min after onset of CPB, immediately after CPB, 2 h after surgery and on the 1st, 2nd, 3rd postoperative day. D11/CD18 expression on neutrophils and serum concentration of IL-6 and IL-8 were analyzed by flow cytometry and enzyme-linked immunosorbent assay, respectively.

RESULTIn CPB group plasma levels of IL-6 and IL-8 increased significantly and peaked at 2 h after initiation of CPB (P<0.05), and descended to the after-anesthesia level at 3rd day after operation. In non-CPB group there was a similar trend of changes in IL-6 and IL-8, but to a much lesser extent. The level of CD11b/CD18 in CPB group began to increase significantly and peaked at 15 min after initiation of CPB (P <0.05), and descended to the after-anesthesia level at 2 h after operation. There was no significant changes of CD11b/CD18 in control group (P >0.05). No significant differences were detected at any time points with respect to expression of CD11a/CD18 and CD11c/CD18 in both groups (P >0.05).

CONCLUSIONCPB surgery of children can cause increasing of the CD11b/CD18 expression level of neutrophil but has no significant effect on CD11a/CD18 and CD11c/CD18. CD11b/CD18 may play an important role in the systemic inflammation induced by CPB.

CD11b Antigen ; blood ; CD18 Antigens ; blood ; Cardiopulmonary Bypass ; Child, Preschool ; Enzyme-Linked Immunosorbent Assay ; Female ; Flow Cytometry ; Heart Defects, Congenital ; blood ; surgery ; Humans ; Infant ; Male ; Neutrophils ; cytology ; metabolism

OBJECTIVETo explore the expression of polymorphonuclear leucocyte adhesive molecules CD11b/CD18 and to study the possible mechanism of Chinese herbal medicine (TCM) for activating blood circulation to remove stasis in preventing vascular diseases.

METHODSForty-nine patients with diabetes mellitus (DM) but with no complications of hypertension and nephropathy were randomly divided into the treated group (26 patients treated by TCM) and the control group (23 patients treated by conventional treatment). They were treated for 3 months. The changes of urinary albumin excretion rate (UAER), CD11b/CD18 expression and tumor necrosis factor-alpha (TNF-alpha) concentration before and after treatment were observed.

RESULTSThe CD11b/CD18 expression and TNF-alpha concentration in DM patients were higher than those of normal range (P < 0.01). After treatment, the UAER, CD11b/CD18 expression and TNF-alpha concentration lowered significantly in the treated group (P < 0.01), but unchanged in the control group. Correlation analysis showed that the lowering of UAER was positively correlated with decreasing of CD11b/CD18 (r = 0.64, P < 0.01) and TNF-alpha (r = 0.56, P < 0.01).

CONCLUSIONExpression of CD11b/CD18 increases in patients with DM type 2. The mechanism of Chinese herbal medicine for activating blood circulation to remove stasis in preventing vascular disease in possibly related with its effect in inhibiting CD11b/CD18 expression.

Aged ; CD11b Antigen ; biosynthesis ; blood ; CD18 Antigens ; biosynthesis ; blood ; Diabetes Mellitus, Type 2 ; blood ; drug therapy ; metabolism ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Male ; Middle Aged ; Phytotherapy

OBJECTIVETo observe the expression of adhesion molecular CD11b/CD18 in peripheral neutrophils and its relation with arteriosclerotic obliterans (ASO), and to study the effect of Xuefu Zhuyu Oral Liquid (XZOL) on it.

METHODSFlow cytometery analysis was used to detect the expression of CD11b/CD18 in peripheral neutrophils of 30 patients with ASO and 30 healthy subjects by direct immunofluroscent technique. Neutrophils were separated from whole blood of ASO patients and cultured, CD11b/CD18 were detected after the cultured cells were interfered with XZOL dilution at different time points (1h,6h,12h).

RESULTSThe expression of CD11b/CD18 in neutrophils in ASO patients was significantly higher than that in the healthy subjects (P < 0.05) and stepped in keeping with the severity of the disease. It was significantly lowered in the treated group 6 and 12 h after XZOL intervention, showing significant difference as compared with that in the control group and the level 1 h after medication (P < 0.05).

CONCLUSIONCD11b/CD18 may involve in the pathogenesis of ASO and be related to the severity of arteriosclerosis. The possible mechanism of XZOL in treating and preventing ASO might be through reducing the expression of CD11b/CD18 in peripheral neutrophils to interfere the adhesive function of them.

Aged ; Arteriosclerosis Obliterans ; blood ; CD11b Antigen ; blood ; CD18 Antigens ; blood ; Cells, Cultured ; Drugs, Chinese Herbal ; pharmacology ; Female ; Humans ; Male ; Middle Aged ; Neutrophils ; cytology ; metabolism

OBJECTIVETo observe the effects of WWOX on cell attachment in ovarian cancer, and to explore its mechanisms of action.

METHODSAttachment assay was used to assess the adhesion of wwox-transfected PEO1 cells and vector-transfected PEO1 cells that were constructed, as well as PEO1 parent cells. Alpha/beta integrin-mediated cell adhesion assays were designed to identify cells surface integrins in PEO1 clone cells. Integrin function blocking experiments were designed to further determine integrins in PEO1 clone cells according to the integrin that was selected in integrin expression profiling. FACS analysis was used to further detect the level of integrin alpha3 on the cell membrane.

RESULTSAttachment assay showed that adhesion of WWOX-transfected PEO1 cells to fibronectin was significantly slower than that in vector-transfected controls or PEO1 parent cells, cultured on the pre-coated fibronectin for 2 hours (P<0.01). The level of membranous integrins alpha2 and alpha3 in the WWOX-transfected PEO1 cells was significantly decreased, as compared with that in vector-transfected controls (P<0.05), but there was no association with the level of functioning integrins betal or beta2 in clone cells (P>0.05). The attachment assays were repeated after pre-incubating the cells with integrin alpha2 or alpha3 function-blocking antibodies. These results showed that blocking integrin alpha3 significantly reduced the binding to fibronectin of all the PEO1 clonal lines, as compared with cells pre-incubated with a non-specific IgG antibody (P<0.05). In contrast, preincubation with alpha2 blocking antibody had very little effect on fibronectin binding in these cells (P>0.05). FACS analysis showed that membranous integrin alpha3 expression revealed a marked reduction in WWOX-transfected cells than that in vector-transfected cells.

CONCLUSIONWWOX acts as an ovarian tumor suppressor by modulating the interaction between tumor cells and the extracellular matrix, decreasing integrin activity and adhesion of tumor cells to fibronectin. This suggests an important role for loss of WWOX tumor suppressor in promoting attachment and adhesion of ovarian cancer cells on locoregional peritoneum, and further resulting in enhancing locoregional peritoneal tumor spread.

CD18 Antigens ; metabolism ; Cell Adhesion ; Female ; Fibronectins ; metabolism ; Humans ; Integrin alpha2 ; metabolism ; Integrin alpha3 ; metabolism ; Integrin beta1 ; metabolism ; Ovarian Neoplasms ; metabolism ; pathology ; Oxidoreductases ; genetics ; metabolism ; Protein Binding ; Transfection ; Tumor Suppressor Proteins ; genetics ; metabolism ; WW Domain-Containing Oxidoreductase

OBJECTIVETo determine the effect of albumin administration on lung injury in traumatic/hemorrhagic shock (T/HS) rats.

METHODSForty-eight adult Sprague-Dawley rats were divided into three groups randomly (n=16 in each group): Group A, Group B, Group C. In Group A, rats underwent laparotomy without shock. In Group B, rats undergoing T/HS were resuscitated with their blood plus lactated Ringer's (twice the volume of shed blood). In Group C, rats undergoing T/HS were resuscitated with their shed blood plus additional 3 ml of 5% human albumin. The expression of polymorphonuclear neutrophils CD18/CD11b in jugular vein blood was evaluated. The main lung injury indexes (the activity of myeloperoxidase and lung injury score) were measured.

RESULTSSignificant differences of the expression of CD18/11b and the severity degree of lung injury were founded between the three groups. (P<0.05). The expression of CD18/CD11b and the main lung injury indexes in Group B and Group C increased significantly compared with those in Group A (P<0.05). At the same time, the expression of CD18/CD11b and the main lung injury indexes in Group C decreased dramatically, compared those in Group B (P<0.05).

CONCLUSIONSThe infusion of albumin during resuscitation period can protect lungs from injury and decrease the expression of CD18/CD11b in T/HS rats.

Albumins ; therapeutic use ; Animals ; CD11b Antigen ; metabolism ; CD18 Antigens ; metabolism ; Disease Models, Animal ; Neutrophils ; metabolism ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Respiratory Distress Syndrome, Adult ; drug therapy ; etiology ; metabolism ; Shock, Hemorrhagic ; complications ; metabolism ; Treatment Outcome ; Wounds and Injuries ; complications ; metabolism

Differentiated HL-60 is an effector cell widely used for the opsonophagocytic-killing assay (OPKA) to measure efficacy of pneumococcal vaccines. We investigated the correlation between phenotypic expression of immunoreceptors and phagocytic ability of HL-60 cells differentiated with N,N-dimethylformamide (DMF), all-trans retinoic acid (ATRA), or 1alpha, 25-dihydroxyvitamin D3 (VitD3) for 5 days. Phenotypic change was examined by flow cytometry with specific antibodies to CD11c, CD14, CD18, CD32, and CD64. Apoptosis was determined by flow cytometry using 7-aminoactinomycin D. Function was evaluated by a standard OPKA against serotype 19F and chemiluminescence-based respiratory burst assay. The expression of CD11c and CD14 gradually increased upon exposure to all three agents, while CD14 expression increased abruptly after VitD3. The expression of CD18, CD32, and CD64 increased during differentiation with all three agents. Apoptosis remained less than 10% until day 3 but increased after differentiation by DMF or ATRA. Differentiation with ATRA or VitD3 increased the respiratory burst after day 4. DMF differentiation showed a high OPKA titer at day 1 which sustained thereafter while ATRA or VitD3-differentiated cells gradually increased. Pearson analysis between the phenotypic changes and OPKA titers suggests that CD11c might be a useful differentiation marker for HL-60 cells for use in pneumococcal OPKA.
Antibodies, Bacterial/immunology ; Antigens, CD11c/metabolism ; Antigens, CD14/metabolism ; Antigens, CD18/metabolism ; Apoptosis/*immunology ; Biological Assay ; Cell Differentiation ; Cell Line, Tumor ; Cholecalciferol/pharmacology ; Dimethylformamide/pharmacology ; Flow Cytometry ; HL-60 Cells ; Humans ; Phagocytosis/*immunology ; Pneumococcal Vaccines/*immunology ; Receptors, IgG/metabolism ; Receptors, Immunologic/*biosynthesis ; Respiratory Burst/immunology ; Streptococcus pneumoniae/*immunology ; Tretinoin/pharmacology

Differentiated HL-60 is an effector cell widely used for the opsonophagocytic-killing assay (OPKA) to measure efficacy of pneumococcal vaccines. We investigated the correlation between phenotypic expression of immunoreceptors and phagocytic ability of HL-60 cells differentiated with N,N-dimethylformamide (DMF), all-trans retinoic acid (ATRA), or 1alpha, 25-dihydroxyvitamin D3 (VitD3) for 5 days. Phenotypic change was examined by flow cytometry with specific antibodies to CD11c, CD14, CD18, CD32, and CD64. Apoptosis was determined by flow cytometry using 7-aminoactinomycin D. Function was evaluated by a standard OPKA against serotype 19F and chemiluminescence-based respiratory burst assay. The expression of CD11c and CD14 gradually increased upon exposure to all three agents, while CD14 expression increased abruptly after VitD3. The expression of CD18, CD32, and CD64 increased during differentiation with all three agents. Apoptosis remained less than 10% until day 3 but increased after differentiation by DMF or ATRA. Differentiation with ATRA or VitD3 increased the respiratory burst after day 4. DMF differentiation showed a high OPKA titer at day 1 which sustained thereafter while ATRA or VitD3-differentiated cells gradually increased. Pearson analysis between the phenotypic changes and OPKA titers suggests that CD11c might be a useful differentiation marker for HL-60 cells for use in pneumococcal OPKA.
Antibodies, Bacterial/immunology ; Antigens, CD11c/metabolism ; Antigens, CD14/metabolism ; Antigens, CD18/metabolism ; Apoptosis/*immunology ; Biological Assay ; Cell Differentiation ; Cell Line, Tumor ; Cholecalciferol/pharmacology ; Dimethylformamide/pharmacology ; Flow Cytometry ; HL-60 Cells ; Humans ; Phagocytosis/*immunology ; Pneumococcal Vaccines/*immunology ; Receptors, IgG/metabolism ; Receptors, Immunologic/*biosynthesis ; Respiratory Burst/immunology ; Streptococcus pneumoniae/*immunology ; Tretinoin/pharmacology

OBJECTIVETo compare the expression profiles of a set of homing-related molecules (HRM) repertoire expressed on hematopoietic stem/progenitor cells (HS/PC) from different sources.

METHODThe expression levels of HRM on HS/PC from umbilical cord blood (UCB), mobilized peripheral blood (mPB) and bone marrow (BM) were assessed using a highly sensitive 4-color flow cytometric analysis.

RESULTSUCB-derived CD34(bright) cells, as well as mPB- and BM-derived CD34(bright) cells strongly expressed CD44, CD11a, CD18, CD62L, CD31 and CD49d. On the other hand, significantly lower expressions of CD49e, CD49f, CXCR-4 and CD54 on UCB-derived CD34(bright) and CD34(bright)CD38(-) cells, compared with those on mPB- and BM-derived CD34(bright) and CD34(bright)CD38(-) cells, were observed. None of UCB-, mPB- and BM-derived CD34(bright) cells expressed other chemokine receptors, including CCR-1, CCR-2, CCR-3, CCR-5, CXCR-1, CXCR-2, CXCR-3 and CXCR-5. Another striking finding was that only mPB-derived CD34(bright) cells expressed significant levels of both the matrix metalloproteinases MMP-2 \[(11.4 +/- 4.9)%\] and MMP-9 \[(27.6 +/- 7.8)%\].

CONCLUSIONHS/PC from UCB have some defects of expression of HRM repertoire, which might partly explain the cause(s) of delayed hematopoietic reconstitution after UCB transplant.

Antigens, CD34 ; immunology ; Bone Marrow Cells ; cytology ; immunology ; metabolism ; CD11a Antigen ; immunology ; CD18 Antigens ; immunology ; Cell Adhesion Molecules ; metabolism ; Cells, Cultured ; Fetal Blood ; cytology ; Flow Cytometry ; Hematopoietic Stem Cell Mobilization ; Hematopoietic Stem Cells ; cytology ; immunology ; metabolism ; Humans ; Hyaluronan Receptors ; immunology ; Infant, Newborn ; Matrix Metalloproteinases, Secreted ; metabolism ; Platelet Endothelial Cell Adhesion Molecule-1 ; immunology ; Receptors, CXCR4 ; metabolism

OBJECTIVETo investigate the anti-thrombosis effect and its mechanism of Qingkailing injection (QKL).

METHODSD rats were randomly divided into control group, model group and QKL 2.5, 5.0, 10 groups. QKL were given (i.p.) to rats once a day for successively 4 days. The rats in all groups but control were pretreated with carrageenin (Ca) i.p. at 16 h before the last dose of QKL and followed by intravenous injection of endotoxin ( LPS fom E. coli O111:B4) 50 microg x kg(-1) 30 min after the last dosing of QKL. Thrombosis in rat tails were observed at 24 h after injection of LPS. The number of white blood cells and platelets, serum TNF-alpha, IL-6 level, CD11b/CD18 expression of white blood cells and platelet aggregation were analysed.

RESULTQKL obviously inhibited the LPS/Ca-induced thrombosis as showed a reduced infarction range due to thrombosis in tails. The sera concentration of TNF-alpha and IL-6, expression of CD11b/CD18 in WBC and platelet coagulation rate were reduced after QKL treatment.

CONCLUSIONThe anti-thrombosis action of QKL is associated with inhibition of WBC activation and adherence, reduction of inflammatory factor release and abating of platelet coagulation rate. The anti-thrombosis mechanism of QKL is consistent with its function of clearing away heat-evil and toxic materials.

Animals ; CD11 Antigens ; genetics ; metabolism ; CD18 Antigens ; genetics ; metabolism ; Disease Models, Animal ; Drugs, Chinese Herbal ; administration & dosage ; Fibrinolytic Agents ; administration & dosage ; Gene Expression ; drug effects ; Humans ; Injections, Intraperitoneal ; Interleukin-6 ; blood ; Male ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Thrombosis ; drug therapy ; genetics ; metabolism ; Tumor Necrosis Factor-alpha ; blood

OBJECTIVETo develop a virulent heat-evil-induced thrombosis animal model, and provide a rational animal model for pathogeny and pathogenesis research of thrombosis-related diseases, anti-thrombosis activity screening and pre-clinical studies of CAHT formula.

METHODSD rats were pretreated with carrageenin (Ca) intraperitoneal injection, followed by intravenous injection of endotoxin (LPS from E. coli O111:B4) 50 microg x kg(-1) 16 h later. Thrombosis in rat tails were observed during 12-24 h after injection of LPS. The inflammatory mechanism of this model were investigated by analyzing serum level of TNF-alpha, IL-6, TXB2 and 6-keto-PGF 1alpha, CD11b/CD18 expression of white blood cells (WBC) and P-selectin expression of vessel walls.

RESULTIn LPS/Ca model group, thrombosis can be clearly observed in the distal part of rat tails after 12-24 h of LPS/Ca treatment. High level of TNF-alpha and IL-6 can be measured in serum. The expression of CD11b/CD18 in WBC and P-selectin in vessel endothelium significantly increased and the number of WBC in peripheral blood markedly decreased shortly after LPS/Ca treatment. The adherence of white blood cells to vessel endothelium which can be seen by microscope mainly contributed to the decrease of WBC. The results indicated that there was obvious inflammation after treatment with LPS/Ca, suggesting that inflammation was the key mechanism for this model.

CONCLUSIONThis model was developed through treatment of LPS in combination with Ca, of which LPS is considered to be an exotic virulent heat-evil in TCM, while the inflammatory molecules produced in this model, such as TNF-alpha, IL-6, CD11b/CD18 and P-selectin belong to internal virulent heat-evils, so this animal model consists of pathogeny and pathogenesis of virulent heat-evils. virulent heat-evil.

6-Ketoprostaglandin F1 alpha ; blood ; Animals ; CD11b Antigen ; metabolism ; CD18 Antigens ; metabolism ; Carrageenan ; pharmacology ; Disease Models, Animal ; Endotoxins ; pharmacology ; Immunohistochemistry ; Interleukin-6 ; blood ; Leukocytes ; drug effects ; metabolism ; Male ; Rats ; Rats, Sprague-Dawley ; Thrombosis ; blood ; chemically induced ; metabolism ; pathology ; Tumor Necrosis Factor-alpha ; blood