Objective To investigate the expression of matrix metalloproteinase 7(MMP-7) mRNA in LOVO cells of colon cancer induced by TF/F Ⅶ a and its signal pathway.Methods We transfected LOVO cells stably with RNAi plasmid targeting to tissue factor to get TFRNAi LOVO cells and detected efficiency of interference in TFRNAi LOVO cells based on Western blot analysis;Expression of MMP-7 was evaluated in LOVO cells treated with 100 nmol/L FⅦa in 0 h、4 h、8 h、12 h、24 h based on RT-PCR and Northern blot.Expression of MMP-7mRNA was determined in quiescent LOVO cells treated with different doses of FⅦa(0 nmol/L、10nmol/L、50 nmol/L、100 nmol/L、200 nmol/L)for 8 h based on Northern blot.Quiescent LOVO cells were treated for 0 h、4 h、8 h、12 h、16 h、24 h with 100 nmol/L FⅦa to evaluate the expression of p-P38;The expression level of MMP-7mRNA induced by 100 nmol/L FⅦa for 8 h in LOVO cells blocked by 10retool SB203580 0.5 h previously and in TFRNAi LOVO cells were measured by Northern blot.Results Northern blot analysis revealed that FⅦa markedly increased the expression of MMP-7mRNA in a time-and dose-dependent manner.Western blot analysis confirmed that FⅦa stimulates p-P38 in a time-dependent manner.SB203580 block 59.2% expression of MMP-7mRNA in LOVO cells induced by TF/FⅦa.In TFRNAi LOVO cells,the expression of MMP-7mRNA induced by TF/FⅦa was 48% less than that in normal LOVO cells.Conclusions TF/FⅦa Complex induces the expression of MMP-7mRNA in LOVO cells in vitro,possibly through P38 pathway.

OBJECTIVETo investigate the clinical therapeutic results of allograft tendon for anatomical reconstruction of medial patellofemoral ligament (MPFL) for the treatment of patellar dislocations.

METHODSFrom September 2008 to June 2013, 16 patients with patellar dislocation underwent MPFL reconstructions. There were 2 males and 14 females, aged 11 to 27 years old (16 years old on average). Patellar dislocations occurred in 11 left and 5 right knees. The disease course ranged from 3 to 10 years. The frequency of dislocation ranged from 9 to 33 times (19 times on average). Affected knee joints showed patellar instability; the range of action for patella obviously increased. The X-ray films showed patellar dislocation. The preoperative Q angle was (36 ± 9)°, and the congruence angle was (63 ± 18)°. Reconstruction was performed via allograft tendon. Allograft tendon was fixed through the superomedial pole of the patella, and the other end was fixed at the natural MPFL insertion site near the medial femoral condyle with an interference screw in a bone tunnel. All the patients were evaluated postoperatively; Kujala patellofemoral scores, objective knee function, complications, and reoperations were assessed.

RESULTSPrimary healing was achieved in all cases. No infection or necrosis and absorption of grafts was observed. All the patients were followed up for an average of 16.4 months (ranged, 10 to 24 months) postoperatively. At the latest follow-up, all the patients had no pain, swelling and patellar instability; neither patella redislocation nor fracture occurred. The X-ray films showed good position of tunnel 6 months after operation, and the congruence angle was (5 ± 9)°, showing statistically significant difference when compared with preoperation (P < 0.05). The postoperative Q angle was (17 ± 8)°, the Kujala knee function score improved significantly from 45.20 ± 9.20 to 89.30 ± 6.40 at the latest follow-up, showing statistically significant difference (P < 0.05).

CONCLUSIONMPFL reconstruction improves clinical symptoms. Anatomical MPFL reconstruction is effective for patellar dislocation, and it offers good recovery of the premorbid patella mechanics. The interference screw provides firm fixation. Allograft can avoid the graft harvest site morbidity, but it increases the cost of the surgery.

Adolescent ; Adult ; Allografts ; Child ; Female ; Humans ; Ligaments, Articular ; surgery ; Male ; Patellar Dislocation ; surgery ; Patellofemoral Joint ; surgery ; Reconstructive Surgical Procedures ; methods ; Tendons ; transplantation

Objective To understand infection status of human immunodeficiency virus (HIV) and analyze the influencing factors among men who have sex with men (MSM) in Guangzhou. Methods Men who have sex with men (MSM) were recruited from 2014 to 2017. Face-to-face questionnaire survey was conducted to collect information of characterisitc and behaviors. Blood samples were used to detect HIV antibodie. Data were analyzed using SPSS 19.0. Results Among 2 419 MSM, 200(8.27%) participants were confirmed positive for HIV. Multivariate Logistic regression analysis showed that with Guangzhou and monthly economic income >0.5 million as reference, non-Guangzhou (OR=1.712, 95% CI: 1.176-2.492，P=0.005) and monthly economic income ≤0.5 million (OR=1.998, 95% CI: 1.409-2.833，P<0.001) were associated with HIV infection among MSM. Diagnosed syphilis (OR=2.461, 95% CI: 1.375-4.405,P=0.002) , undetected syphilis (OR=2.333, 95% CI: 1.635-3.331,P<0.001), anal sex role passive (OR=2.015, 95% CI: 1.244-3.267,P=0.004), both active and passive (OR=2.115, 95% CI: 1.374-3.251,P=0.001), non-using condoms every time during anal sex (OR=1.955, 95% CI: 1.374-2.781,P<0.001), non-fixed anal sex objects (OR=2.150, 95% CI: 1.463-3.160,P<0.001) were major risk factors for HIV infection among MSM. Conclusions The prevalance of HIV infection and high-risk sexual behavior were high among MSM in Guangzhou. It is urgent to expand the scope of HIV testing and advocate safe sexual behaviors among MSM.

Objective To compare the treatment outcomes,complications and histopathologic features between conventional parotidectomy and functional regional parotidectomy in the treatment for pleomorphic adenoma of parotid gland and to provide clinical,and pathological evidence for determining the safe surgical margin.Methods Of 109 patients,60 patients received conventional parotidectomy and 49 patients received functional regional parotidectomy.The rates of tumor recurrence and complications were compared between the groups of patients.Results There was no significant difference in the incidence of tumor recurrence,the facial paralysis and sialosyrinx between two groups.The rates of Frey's syndrome,numbness of auricular region,and facial asymmetry were 30.0％,61.7％,and 38.3％ in the patients with conventional parotidectomy respectively,while the rates were 6.1％,30.6％,and 8.2％ in the patients with functional regional parotidectomy,with significant statastically difference,respectively (P ＜ 0.05 ).Of 109 patients,33 with incomplete capsule,29 with capsule penetration,25 with pseudopodia,and 13 with satellite nodules.There was no significant difference in the depth of tumor infiltration between two groups of patients.For the tumor smaller than 2 cm,the depth of infiltration in conventional group was from 0.061 to 1.122 mm,functional group was from 0.442 to 3.127 mm (Z =- 1.093,P =0.057) ; for the tumors between 2 - 4 cm,the depth in conventional group was from 0.081 to 7.908 mm,functional group was from 0.082 to 6.632 mm ( Z =-0.214,P =0.831 ) ;for the tumor larger than 4 cm,the depth of infiltration was from 0.340 to 8.476 mm.Conclusions Compared with conventional parotidectomy,functional regional parotidectomy has good outcomes and less complications.The surgical margins of pleomorphic adenomas of the parotid gland should be determined by the size of tumor.The 1 cm-surgical margins are safe for the tumors less than 4 cm,and the tumors more than 4 cm should be treated with superficial parotidectomy.

Fumigaclavine C (FC), an active indole alkaloid, is obtained from endophytic Aspergillus terreus (strain No. FC118) by the root of Rhizophora stylosa (Rhizophoraceae). This study is designed to evaluate whether FC has anti-adipogenic effects in 3T3-L1 adipocytes and whether it ameliorates lipid accumulation in high-fat diet (HFD)-induced obese mice. FC notably increased the levels of glycerol in the culture supernatants and markedly reduced lipid accumulation in 3T3-L1 adipocytes. FC differentially inhibited the expressions of adipogenesis-related genes, including the peroxisome proliferator-activated receptor proteins, CCAAT/enhancer-binding proteins, and sterol regulatory element-binding proteins. FC markedly reduced the expressions of lipid synthesis-related genes, such as the fatty acid binding protein, lipoprotein lipase, and fatty acid synthase. Furthermore, FC significantly increased the expressions of lipolysis-related genes, such as the hormone-sensitive lipase, Aquaporin-7, and adipose triglyceride lipase. In HFD-induced obese mice, intraperitoneal injections of FC decreased both the body weight and visceral adipose tissue weight. FC administration significantly reduced lipid accumulation. Moreover, FC could dose-dependently and differentially regulate the expressions of lipid metabolism-related transcription factors. All these data indicated that FC exhibited anti-obesity effects through modulating adipogenesis and lipolysis.
Adipocytes ; Adipogenesis ; Animals ; Aspergillus ; Body Weight ; Carrier Proteins ; Diet, High-Fat ; Glycerol ; Injections, Intraperitoneal ; Intra-Abdominal Fat ; Lipase ; Lipolysis ; Lipoprotein Lipase ; Mice ; Mice, Obese ; Peroxisomes ; Rhizophoraceae ; Sterol Esterase ; Transcription Factors

OBJECTIVETo determine the best shear wave elastography (SWE) quantitative parameters including the maximum elasticity (Emax), mean elasticity(Emean), minimum elasticity, standard deviation and ratio of Emean (Eratio) in assessing benign and malignant breast lesions.

METHODSTotally 302 breast lesions underwent conventional ultrasound and SWE. Each lesion was classified according to ultrasound Breast Imaging Reporting and Data System (BI-RADS). The receiver operating characteristic(ROC) curves were used to determine the cut-off values of SWE quantitative parameters and to suggest breast lesions as benign or malignant. The sensitivity,specificity and the Youden index (sum of sensitivity and specificity minus 1) of SWE quantitative parameters were compared,and then the sensitivity,specificity and the Youden index of the combinations of each SWE parameters in assessing breast lesions were compared.

RESULTSThe sensitivity,specificity and the Youden index of the Emax were 0.87,0.97 and 0.84,which were higher than other SWE parameters (all P<0.01). The sensitivity, specificity and the Youden index of Emax combined with ultrasound BI-RADS were 0.86,0.97 and 0.83, which were higher than other combinations (all P<0.01).

CONCLUSIONSCompared with other parameters, Emax has the best performance in assessing breast lesions. It can be used as an important quantitative indicator for the evaluation of benign and malignant breast lesions.

Breast Diseases ; Breast Neoplasms ; Elasticity ; Elasticity Imaging Techniques ; Female ; Humans ; ROC Curve ; Ultrasonography, Mammary

OBJECTIVETo explore the effect of modified Baizhu (Rhizoma Atractylodis Macrocephalae) powder on the gastrointestinal function in mouse models with stomach-cold functional dyspepsia. Meanwhile,the mouse models were administered with Shihu (dendrobium), a traditional Chinese drug with cold nature and flavour, to explore the way via which it exert its effect on specific symptoms. Methods: Mouse models with stomach-cold functional dyspepsia were established by ice water and ice NaOH. The effects of modified Baizhu powder and dendrobium on mice were observed in terms of water intake, weight change,small intestine propulsion rate, intestinal absorption function, and effects on ghrelin and motilin.

RESULTSThe modified Baizhu powder effectively increased food intake, water intake, body weight (P<0.05) and swimming time (P<0.01), increased the small intestine propulsion rate and serum D-xylose content (P<0.05), and up-regulated ghrelin (P<0.05). Also, it showed a trend to down-regulate the motilin, although the change was not statistically significant (P>0.05). In contrast,the use of Shihu aggravated symptoms in the mouse models. Conclusion: The changes in ghrelin and motilin levels may be the neuro-endocrine mechanisms via which the modified Baizhu powder and Shihu exert their effects on mouse models.

Animals ; Disease Models, Animal ; Dyspepsia ; Ghrelin ; Intestine, Small ; Medicine, Chinese Traditional ; Mice ; Motilin ; Powders ; Stomach

Antineoplastic Combined Chemotherapy Protocols/therapeutic use* ; Bridged Bicyclo Compounds, Heterocyclic ; Cord Blood Stem Cell Transplantation ; Demethylation ; Hematopoietic Stem Cell Transplantation ; Humans ; Leukemia, Myeloid, Acute/therapy* ; Sulfonamides