AIM: Currently available anti-scarring regimens for glaucoma filtration surgery have potentially blinding complications and safer alternatives would be beneficial. This experiment is to investigate the effect of TGF-β2 antisense oligodeoxynucleotide on differentiation, proliferation of subconjunctival fibroblast following glaucoma filtration surgery.METHODS: Glaucoma filtration surgery were performed on both eyes of 28 rabbits. TGF-β2 antisense oligodeoxynudeotide was subconjunctivally injected in the right eyes (A group), and TGF-β2 missense oligodeoxynucleotide (B group)or PBS(C group) was used at the same method in the left eyes as controls. Rabbits were killed at 4,7,14 and 28 days after surgery. Intraocular pressure (IOP), bleb characteristics were recorded at different time point. Subconjunctival fibroblasts were examined by immunohistochemistry and electron microscopy.RESULTS: The IOP of rabbits in group A was significantly lower at 14 days (6.74± 1.18 mmHg) and 21 days (8.15± 1.97mmHg) after operation than the IOP in group B (8.53± 1.04,9.72± 1.09 mmHg)(P ＜0.01) and group C(8.79± 1.21, 9.43±1.27 mmHg) (P ＜0.05). The mean bleb survival time was longer (17.2 days) in group A than that of group B (14.5 days) and group C (13.5 days)(P＜0.05). The population of the cells expressing α -smooth muscle actin(α -SMA) and proliferating cell nuclear antigen (PCNA) was significantly reduced in group A compared with the group B and C. The ultrastructure of fibroblast was not altered by TGF-β2 anti-sense oligodeoxynucleotide.CONCLUSION:TGF-β2 antisense oligodeoxynucleotide can prevent the scar formation after glaucoma surgery by inhibit the differentiation and proliferation of subconjunctival fibroblast. It could be a potentially useful anti-scarring alternative for the prevention of late surgical failure.

Objective To analyse the changes of a district general hospital before and after management by Shanghai Renji Medical Group through current situation survey,and explore the conditions for the development of district general hospitals.Methods The Zhujiajiao People's Hospital of Qingpu District in Shanghai was selected,and patients(n=50)and hospital staff(n=100) were conducted current situation survey with questionnaires which included the knowledge and evaluation of the hospital's current situation as well as the changes before and after management by Shanghai Renji Medical Group.Results Half year after management by Shanghai Renji Medical Group,great progress in medical work was achieved,with a favourable development trend.The rate of satisfaction on medical service evaluated by inpatients reached 89.60%,and 81.91% hospital staff had confidence in the sustainable development of the hospital. Conclusion Management by Shanghai Renji Medical Group has brought prospects for the Zhujiajiao People's Hospital.Under current environment,only certain conditions are met can a district general hospital achieve sustainable development.

Objective To establish the quality standards of Longdan Xiegan Capsule and Longdan Xiegan Soft Capsule. Methods Gentianae Radix et Rhizoma, Bupleuri Radix, Scutellariae Radix, Gardeniae Fructus, Alismatis Rhizoma, Angelicae Sinensis Radix, Rehmanniae Radix and Glycyrrhizae Radix et Rhizoma were identified by TLC. Gentiopicrin in Gentianae Radix et Rhizoma, geniposide in Gardeniae Fructus, baicalin in Scutellariae Radix were determined by HPLC. Results The TLC spots developed were clear. Gentiopicrin showed good linear relationship in the range of 0.066 1-0.595 1 mg (r=1.000 0), the average recovery of Capsule was 99.34%(RSD=1.50%), and the average recovery of Soft Capsule was 96.62%(RSD=1.50%). Geniposide showed good linear relationship in the range of 0.076 1-1.369 8 mg (r=0.999 9), the average recovery of Capsule was 101.3% (RSD=1.70%), and the average recovery of Soft Capsule was 100.59%(RSD=0.79%). Baicalin showed good linear relationship in the range of 0.214 4-1.608 mg (r=1.000 0), the average recovery of Capsule was 101.12% (RSD=1.30%), and the average recovery of Soft Capsule was 98.07% (RSD=2.40%). Conclusion The method is simple and reproducible. It can be used to control the quality of Longdan Xiegan Capsule and Longdan Xiegan Soft Capsule.

Objective To explore the expression and regulatory mechanism of hypoxia inducible factor-1?(HIF-1?)during fracture healing. Methods Mouse models of tibia fracture healing were established,and callus samples were collected 1,3,7,14,21 and 28 days after fracture.The development of callus and new bone formation were evaluated with roentgenology,Micro-CT and tetracycline double labeling method,and the expression of HIF-1?,vascular endothelial growth factor(VEGF),Runx2 and ALP in callus were detected with RT-PCR,Western blotting and immunohistochemistry.The relationship between HIF-1? and fracture healing was analysed. Results The expression of HIF-1? was detected in cells in the fracture sites as well as in evolved osteoblasts,chondrocytes and osteocytes in early callus under hypoxia.The highest expression rate of HIF-1? achieved on the 7th day after fracture,lasted for about 7 days,then decreased gradually,and returned to intact level on the 28th day after fracture.The expression tendency of VEGF resembled that of HIF-1?.Bone formation activity was more active in early callus,and the callus volume peaked on the 14th day after fracture and decreased gradually.The mineralization of callus mainly took place in the late healing period(14th to 28th day after fracture).Conclusion Cells involved in fracture healing are hypoxia-responsive cells,which express HIF-1?.HIF-1? can regulate cell state and function,and can promote angiogenesis so as to play a crucial role in fracture healing.

Communicable Diseases ; diagnosis ; epidemiology ; Humans ; Oligonucleotide Array Sequence Analysis

Based on the transcriptome data, we cloned the open reading frame of IiHCT gene from Isatis indigotica, and then performed bioinformatic analysis of the sequence. Further, we detected expression pattern in specific organs and hairy roots treated methyl jasmonate( MeJA) by RT-PCR. The IiHCT gene contains a 1 290 bp open reading frame( ORF) encoding a polypeptide of 430 amino acids. The predicted isoelectric point( pI) was 5.7, a calculated molecular weight was about 47.68 kDa. IiHCT was mainly expressed in stem and undetectable in young root, leaf and flower bud. After the treatment of MeJA, the relative expression level of IiHCT increased rapidly. The expression level of IiHCT was the highest at 4 h and maintained two fold to control during 24 h. In this study, cloning of IiHCT laid the foundation for illustrating the biosynthesis mechanism of phenylpropanoids in I. indigotica.
Acyltransferases ; chemistry ; genetics ; metabolism ; Amino Acid Sequence ; Cloning, Molecular ; Gene Expression Regulation, Plant ; Isatis ; chemistry ; classification ; enzymology ; genetics ; Models, Molecular ; Molecular Sequence Data ; Open Reading Frames ; Phylogeny ; Plant Proteins ; chemistry ; genetics ; metabolism ; Quinic Acid ; metabolism ; Sequence Alignment ; Shikimic Acid ; metabolism

Aged ; Carcinoma, Small Cell ; Female ; Humans ; Laryngeal Neoplasms ; Male ; Middle Aged

Background and purpose: Multidrug resistance (MDR) is the dominating obstacle to the chemotherapy. There is strong evidence that the phosphoinositide 3-kinases (PI3Ks) signaling pathway is involved in MDR phenotype, however, the mechanism of MDR occurrence is still unknown. This study tended to investigate the regulating effect of PI3K/Akt signaling pathway and its downstream target genes in P-glycoprotein (P-gp) (ABCB1 gene encoding)-mediated MDR in human colon carcinoma HCT-116/L-OHP cells. Methods:Pretreatment with PI3K selective inhibitor LY294002 (20μmol/L) for 2 h, the sensitivity of L-OHP was evaluated by the CCK-8 (cell counting kit-8) assay in HCT-116/L-OHP cells, and the expressions of P-gp, LRP, MRP-2, Akt, p-Akt, IκB and p-IκB were evaluated by Western blot. The activity of ABCB1 promoter was evaluated by chromatin immunoprecipitation analysis (CHIP). Results: After inhibiting the activity of PI3K/Akt signaling pathway, the IC50 value of L-OHP decreased from(157.48±16.73)μg/mL to (53.68±3.18)μg/mL in HCT-116/L-OHP cells, and the reversal index was 2.93 (P<0.01). The expressions of P-gp, p-Akt and p-IκB were down-regulation compared with the concrol group (P<0.01), but the expressions of LRP, MRP-2, Akt and IκB didn't change signiifcantly. CHIP result has conifrmed that NF-κB protein could bind to the region of ABCB1 gene promoter in HCT116/L-OHP cells. Conclusion:Blocking of PI3K/Akt/NF-kB signal pathway could increase the drug sensitivity to MDR cells, inhibit the phosphorylation of p-Akt and p-IκB, and reversing ABCB1/P-glycoprotein-mediated multidrug resistance in colon carcinoma cells.

Objective To explore the anti-inflammatory effect of antiflammin-2 (AF2) and recombinant peptide sequence 2(R2) on acute lung injury of mouse. To observe the expression of clara cell 16000 protein (CC16) and surfactant protein A (SP-A) in the lung of mouse inoculated with lipopolysaccharide (LPS) and the impact of AF2,R2,and glucocorticoids(hydrocortisone,HC) may have on the expression of the CC16 and SP-A in the lung of mice with acute lung injury. Methods Balb/c mice were inoculated with LPS (5 mg/kg) by intraperitoneal injection to set up ALI mice model. Mice weighed from 15 g to 16 g were grouped into control group, model group and treated groups respectively treated with AF2, R2 or HC. Mice in the control group were injected with physiological saline solution, while mice in the other four groups were inoculated with LPS to induce acute lung injury. Then animals in the treated groups were treated with AF2, R2 or HC each on a dose of 2 mg/kg also through intraperitoneal injection,while those of the control group and the model group, were given equivalent physiological saline solution as a placebo. The respiratory rate of all of these animals were recorded 6 hours after the injection. And at the time point of 12 hour,all the mice were sacrificed for a preparation of the whole lung tissue for the sake of a pathological investigation ,or for extractions of RNA for a semiquantitative analysis of the expression of CC16 and SP-A within the lungs. Results (1) An obvious attenuation of the respiratory rates of the three treated groups were observed when comparing with that of the mice in the model group without any anti-inflammatory treatment. (2) Remarkable extenuation of the extent of intra-alveolar and intersticial hemorrhage and infiltration of inflammatory cells were observed within the treated groups comparing with that of the model group. (3) An attenuate expressions of CC16 or SP-A were observed in the model group,while obvious uptrend of CC16 expression was observed in AF2 treated groups and increase of SP-A expressions were found in R2 and HC treated groups. Conclusion The anti-inflammatory effect of the peptide, AF-2 or R2, has been conformed on ALI mice model induced by LPS.

Patients with hypoxia pulmonary hypertension (HPH) are often accompanied by dyspnea, fatigue, and headache. With the development of the disease, the right ventricle gradually collapses and eventually leads to death. Hypoxic pulmonary vascular remodeling is an important pathological basis of HPH, and the remodeled pulmonary vessels will form permanent thickening. The mechanism of hypoxic pulmonary vascular remodeling is relatively complex. At present, there are few studies on drugs for pulmonary vascular remodeling on the market, mainly focusing on the alleviation of pulmonary vasoconstriction. It was found that hypoxia induces calcium overload in pulmonary artery smooth muscle cells (PASMCs), resulting in the proliferation of PASMCs. The main mechanisms include: ① abnormal expression of calcium pumps; ② abnormal calcium channels in the plasma membrane of pulmonary artery smooth muscle cells; ③ overexpression of calcium-sensitive receptors in cells; ④ the expression of Na⁺/Ca²⁺ exchanger type-1 was abnormal. This review summarized several mechanisms of hypoxia induced calcium overload leading to pulmonary artery remodeling, hoping to provide a new idea for the treatment of HPH.