AIM:To explore the effect of angiotensin II ( Ang II) on phenotypic transformation in adventitial fibroblast subpopulations isolated from rat thoracic aorta .METHODS: Vascular adventitial fibroblasts were individually expanded by the method of cloning rings .The isolated cells were identified by reverse transcription-polymerase chain reac-tion ( RT-PCR) and immunofluorescence staining .The rat vascular adventitial fibroblasts were cultured in vitro and incuba-ted with or without Ang II.Using the methods of fluorescence quantitative polymerase chain reaction (FQ-PCR), immuno-fluorescence staining and Western blot , the expression of α-smooth muscle actin (α-SMA) was detected .RESULTS:The spindle cells and round cells were isolated by the method of cloning rings .From passage 3 to passage 8,α-SMA expression was decreased in the spindle cells , and increased significantly in the round cells .Induced by Ang II , the expression of α-SMA was increased in the 2 cell subpopulations, and that in the round cells was significantly increased (P<0.01).The results of Western blot indicated that Ang II stimulated the subpopulation of the round cells to transfer to myofibroblasts . CONCLUSION:Ang II promotes the phenotypic transformation of adventitial fibroblast subpopulations , and the 2 subpop-ulations may play an important role in vascular remodeling and reparative process .

[Objective]To observate the successive status of chondrocyte apoptosis after impacting injury of articular cartilage by TUNEL marking method and transmission electron microscope(TEM).[Method]Fifty-six New Zealand adult rabbits were divided randomly into low-energy and high-energy two groups,each group was 28.Femoral medial condylar cartilage of one side was injuked by impacting in experimental group,the opposite side as control group.Four rabbits were killed and their medial femoral condylar cartilages were taken at each of the following intervals:4 days,1,2,4,8,16,32 weeks after impacting injury.The specimens were observed as pathology histological sections and strained by TUNEL to measured the rate of chondrocyte apoptosis.[Result]In early stage of post-injury,the rate of chondrocyte apoptosis in and high-energy is significantly higher than that of control group.After 4 weeks,the rate of chondrocyte apoptosis decreases to the level of that of control group in low-energy.In high-energy group,the rate of chondrocyte apoptosis is constantly upgraded-phase,higer significantly than the level of that of control group.[Conclusion]In early stage of post-injury,the rate of chondrocyte apoptosis in low and high-energy was significantly higher than that of control group.After 4 weeks,the rate of chondrocyte apoptosis decreased to the level of control group in low-energy.In high-energy group,the rate of chondrocyte apoptosis is constantly upgraded-phase,higer significantly than the level of control group.

[Objective]To investigate the pathological change of articular cartilage after impacting injury.[Method]Fifty-six New Zealand adult rabbits were divided randomly into low-energy and high-energy groups,with 28 rabbits in each group.One side of hind limb was designed as experimental side and the opposite one as control side.Four rabbits were killed at 4 days,1,2,4,8,16 weeks after impacting injury.Histological sections of the specimens were observed and stained by HE and Safranin O.the values of gray scale were obtained by imaging analysis.[Result]In low-energy group,the Mankin's score and the value of gray scale of Safranin O in experiment side was not significantly different from the control side.In high-energy group,the Mankin's score and the value of gray scale of Safranin O in experiment side increased gradually,and was significantly different from the control side.[Conclusion]In the low-energy group,the cartilage returned to the normal level at 4 weeks.In the high-energy group,the cartilage failed to be restored.The degeneration of articular cartilage was very obvious after 4 weeks.

Hemicellulose is a kind of very abundant carbohydrate,which is not y ot exploited Arabinofuranosidase is important enzyme in biodegradation of hemi cellulose Up to now many arabinofuranosidases and genes have been studied in t he world In this paper, we reviewed mainly on the classification, characterizati on, utility and gene expression of arabinofuranosidase

Objective To evaluate the activities of daily living (ADL) and investigate its influential factor in primary angle-closure glaucoma patients.Methods One hundred primary angle-closure glaucoma patients (acute phase) diagnosed definitely from April to October 2014 were collected.The status of sex,gender,education,income were recorded.Barthel Index (BI),Hospital Anxiety and Depression Scale (HADS) and Glaucoma Quality of Life-15 (GQL-15) were respectively used to assess the ADL,anxiety and depression symptoms and visual quality of life in primary angle-closure glaucoma patients.At the same time the factors affecting ADL of primary angle-closure glaucoma were analyzed.Results There were no dysfunction in 12 patients,46 patients with mild dysfunction,32 patients with moderate dysfunction and 10％ (10/100) patients with severe dysfunction.BI was negatively correlated with anxiety and depression score,GQL-15 results and disease course (r=-0.819-0.395,P ＜ 0.01),and positively correlated with average monthly income (r=0.453,P ＜ 0.01).There were no correlation with gender,sex and education (r=-0.159-0.172,P ＞ 0.05).Conclusions ADL of primary angle-closure glaucoma patients has varying degrees of dysfunction,and disease course,average monthly income,anxiety,depression and visual quality of life are closely related with it.

Adolescent ; Anemia, Aplastic ; blood ; immunology ; Child ; Child, Preschool ; Female ; Humans ; Lymphocyte Subsets ; immunology ; Male ; Retrospective Studies ; Severity of Illness Index ; T-Lymphocytes, Cytotoxic ; immunology ; Th1 Cells ; immunology ; Th2 Cells ; immunology

AIM: To observe the clinical effects of intravitreal injection of triamcinolone acetonide ( TA ) before vitrectomy for retinal detachment associated with choroidal detachment. · METHODS: Totally 23 cases ( 23 eyes ) of retinal detachment associated with choroidal detachment in our hospital were treated by intravitreal injection of TA 4-5d before 23-Gauge micro-invasive vitrectomy combined with silicone oil injection. All the cases were followed up between 6 to 9mo. The anatomic retinal reattachment, visual acuity, intraocular pressure and postoperative complications were observed and analyzed. ·RESULTS: After the surgery, the visual acuity of all patients were improved, with 9 eyes better than 0. 3 (39%), and 18 eyes better than 0. 05 (78%). The BCVA at 1wk, 1 and 3mo and last follow up were different compared with before operations (P<0. 05). The mean intraocular pressure was 4. 02±1. 47mmHg before injection, 13.69±4. 68mmHg before operation (P<0. 05), and17.72±5.87 mmHg after operation (P<0.05). The retina of all patients treated were reattached 2wk post-operatively. The retinal reattachment rate after the primary surgery and the secondary surgery was 87% and 100%, respectively. Post-operative complications included 7 eyes of transient high intraocular pressure, occurred during 12-14d after operations and returned to normal after less glucocorticoid eye drops and giving IOP lowering drugs. There were no intraocular hemorrhage, iatrogenic retinal breaks, infections, or lens injuries. · CONCLUSION: Intravitreal injection of TA before vitrectomy for retinal detachment associated with choroidal could improve the clinical effects, and decrease the difficulty of surgery while the injection itself is pretty safe.

Aim To establish a co-incubation system in cardiac fibroblasts of SD neonatal rats and spleen CD4+ CD25 + regulatory T lymphocytes (Tregs) of normal adult SD rats,and to investigate the effects of eplerenone(EPL) on the interaction of two cells and the relationship with the Kvl.3 channel on Tregs cell membrane.Methods The spleen Tregs of normal adult SD rats were sorted by immunomagnetic bead sorting,and the myocardial fibroblasts of SD rats were isolated by differential adherence method.The experiment was conducted in the following groups:CFs,CFs + Tregs,CFs + Tregs + EPL,Tregs.The proliferation of CFs was detected by CCK-8 method.The expression levels of type Ⅰ collagen,type m collagen and matrix metalloproteinase 2 (MMP-2) secreted by CFs were detected by ELISA.The mRNA expression levels of Kv1.3,KCa3.1 on Tregs cell membrane and intracellular CRAC channel were detected by RT-qPCR technique.Tregs cell membrane Kvl.3 channel protein expression levels were determined by In-Cell Western blot.Results After 48 h incubation of the co-culture system,the cell proliferation was stable.CFs proliferation was marked(P ＜0.01),which could be inhibited by EPL(P ＜0.01).The type Ⅰ,type Ⅲ collagen and MMP-2 secreted by CFs increased (P ＜ 0.01).The expression levels of Kv1.3,KCa3.1 and CRAC channel mRNA in Tregs increased by 6.95,1.99 and 1.53 fold (CFs + Tregs vs Tregs,P ＜0.01),EPL decreased the mRNA level of each channel (CFs +Tregs + EPLvs CFs + Tregs,P＜0.01),and the decrease of Kv1.3 channel was the most significant (P ＜ 0.01).The Kv1.3 channel protein of Tregs increased by 67.9％ (CFs + Tregs vs Tregs,P ＜0.01),which could be inhibited by EPL(P ＜ 0.01).Conclusions Tregs cultured with CFs after 48 h can significantly promote the proliferation of CFs,and EPL can down-regulate the Kv1.3 channel expression on the Tregs membrane and inhibit the activation/proliferation of Tregs,indirectly inhibiting myocardial fibrosis.

The study is to investigate the effect of angiotensin II (Ang II) and its receptor blockers on migration and endothelin-1 (ET-1) expression of rat vascular adventitial fibroblast subpopulations. Vascular adventitial fibroblasts were individually expanded by using cloning rings, and the effects of Ang II on the migration of adventitial fibroblast subpopulations were evaluated by Transwell. Fluorescence quantitative-PCR detected the expression of preproET-1 mRNA induced by Ang II, and its receptor antagonists losartan and PD-123319. The concentration of ET-1 was determined by ELISA. It showed that spindle shaped and epithelioid shaped cells were isolated by using cloning rings, named as spindle cells and round cells. RT-PCR showed that fibroblast subpopulations did not have leukocytes, endothelial cells and smooth muscle cells, namely pure cell lines. Compared with respective control cells, two subpopulations had transferring ability. Ang II significantly improved round cells migration in a concentration-dependent manner, and had no obvious influence on spindle cells migration. Ang II (1 x 10(-8) - 1 x 10(-6) mol x L(-1)) significantly increased the expression of preproET-1 mRNA in round cells (P < 0.01), and had no significant effect on the expression of preproET-1 mRNA in spindle cells. Losartan blocked the expression of preproET-1 mRNA induced by Ang II in round cells, and had no significant effect on the expression of preproET-1 mRNA in spindle cells. The effects of Ang II and ET-1 receptor inhibitors on the release of ET-1 were similar to the expression of preproET-1 mRNA. The results indicate that there are two cell subpopulations: round cells and spindle cells in rat vascular adventitial fibroblasts. Ang II significantly improved cells migration, and increased the expression of ET-1 in round cell subpopulation. It suggested that there may be different migratory mechanisms in two cell subpopulations, and the two subpopulations may play a different role in vascular remodeling and reparative process.