Objective: To study the scavenging capacity of extract from four kinds of barley leaves on superoxide free radical and hydroxyl free radical. Methods: Measure the content of superoxide free radical and hydroxyl free radical by nitro blue tetrazolium(NBT) photo-reduction. Results: Along with the flavonoid in the reaction liquid, the scavenging rate shows ascending trend . When the concentration of flavonoid is 12?g/ml, its scavenging rate is 95.56% and 94.12% on superoxide free radical and hydroxyl free radical respectively. Conclusion: The flavonoids of barley leave s have stronger anti-oxidative action.

AIM: To evaluate and analyze the morphological property and physiological activity of cartilaginous loose bodies in the knee joint, to research the changeable mechanism of histological morphous and physiological function. METHODS: The experiment was conducted at the Department of Pathology of the First Affiliated Hospital of Anhui Medical University, the Physical Testing & Chemical Analysis Center of Anhui Medical University, and the Electron Microscope Center of Anhui Provincial Hospital Affiliated to Anhui Medical University from January 2005 to January 2006. ①Experimental samples were 30 cartilaginous loose bodies all through arthroscopy as experimental group in which Group A (less than 6 months) had 14 samples and group B (between 6 and 12 months) 10, group C (more than 12 months) 6. Another 30 control samples were originated from non-weight loading side of articular cartilage through special equipment by arthroscopy. ②All samples were carried out the morphological measurement, light and transmission electron microscope exam, Ⅱ-collagen immunohistochemical stain, the measurement of collagen, calcium and fosforus. RESULTS: ①To compare the samples in the group A and control group, they had the identical or similar morphosis, microscopic structure of chondrocyte and distribution of extracellular matrix, the statistical treatments of the content of calcium, fosforus and collagen showed that the differences of scores between two groups were not statistically significant [calcium:(3.120?0.224),(3.090?0.231) mg/g;fosforus:(0.432?0.045),(0.455?0.067) mg/g;collagen:(462.43?17.12)(466.71?14.59) mg/g]. General speaking, comparing with the control articular cartilage, the loose bodies in group A had the normal histological property and physiological activity. ②Compared with control group, the samples in group B and C had the tendency of fibrous degeneration: necrotic or degenerative chondrocytes increasing, the contents of proteoglycan and Ⅱ-collagen decreasing, the tendency in group C more than group B, but the cartilaginous loose bodies in group B and C had many active chondrocytes mainly. Total content of collagen [(441.20?16.49),(417.33?8.38) mg/g] and Ⅱ-collagen decreased, while the contents of calcium and fosforus increased [calcium: (3.696?0.442),( 6.469?0.555) mg/g;fosforus:(0.523?0.068),(0.683?0.056) mg/g]. Generally, compared with the control articular cartilage, the histological property and physiological activity of the loose bodies in groups B and C had changed. CONCLUSION: The cartilaginous loose bodies can remain its histological property and physiological activity in the knee articular cavity for a long time, but it has the tendency of disorganization and physiological activity descending as time prolongs.

Adenoma ; pathology ; Carcinoma, Renal Cell ; pathology ; Diagnosis, Differential ; Female ; Humans ; Kidney Neoplasms ; pathology ; Middle Aged

BACKGROUND:Surface marker molecules and differential ability of human adipose tissues-derived mesenchymal stem cells can change with the prolonged culture time.OBJECTIVE:To analyze the morphological characteristics and colony forming capacity of early cultured rabbit adipose tissues-derived mesenchymal stem cells in vitro.DESIGN,TIME AND SETTING:The cytological in vitro study was performed at the Institute of Ophthalmology,and Central Laboratory,Eye and ENT Hospital,Fudan University from January to March 2008.MATERIALS:Nine female New Zealand rabbits aged three months were obtained from the Shanghai Yingenyang Rabbit Room.METHODS:Adipose tissue was harvested from the nape fat pad of the New Zealand rabbits following anesthesia.Primary cultured cells were established using type I collagenase and cell cultures were maintained with DMEM containing 0.1 volume fraction of fetal bovine serum.Cells were passaged when 80% was confluent.The second,third and fourth passages of cells were utilized for the study.MAIN OUTCOME MEASURES:The morphology of adipose tissues-derived mesenchymal stem cells was observed using inverted microscope.Cell phenotype was detected utilizing flow cytometry.The cloning capacity was determined.RESULTS:Adipose tissues-derived mesenchymal stem cells were fibroblast-like and proliferated rapidly in vitro at the second,third and fourth passage.Flow cytometry showed that adipose tissues-derived mesenchymal stem cells expressed CD29 and PCNA.The colony-forming rates were respectively(8.0?0.6)%,(6.7?0.4)% and(4.6?0.5)%(F=12.18,P

OBJECTIVETo study the effect of Qinghuang Powder (QHP) combined Chinese herbs for Pi-strengthening and Shen-reinforcing (CHPSSR) on hypoxia-inducible factor 1alpha (HIF-1alpha) in bone marrow mononuclear cells of myelodysplastic syndrome (MDS) patients.

METHODSChanges of HIF-1alpha in bone marrow mononuclear cells of MDS patients were detected in 25 MDS patients treated by QHP combined CHPSSR using flow cytometry. Meanwhile, 13 healthy subjects were recruited as the control group. Changes HIF-1alpha levels in various serial bone marrow mononuclear cells were detected.

RESULTS(1) Among the 25 patients in the treatment group, there were 19 patients effective and 6 patients ineffective, with the total effective rate being 76%. (2) Compared with before treatment, levels of peripheral blood WBC, Hb, PLT, and ANC significantly increased in the treatment group after treatment, showing statistical difference (P < 0.05, P < 0.01). (3) Compared with before treatment, the HIF-1alpha mean fluorescence intensity was enhanced in bone marrow lymphocytes, monocytes, granulocytes, and nucleated red blood cells of the treatment group after treatment (P < 0.05, P < 0.01). Compared with the control group, the HIF-1alpha mean fluorescence intensity was weakened in bone marrow lymphocytes, monocytes, and nucleated red blood cells of the treatment group before treatment; while it was obviously enhanced in granulocytes (P < 0.01). But after treatment the HIF-1alpha mean fluorescence intensity increased more in the granulocytes of the treatment group than in those of the control group (P < 0.01), but there was no statistical difference in bone marrow lymphocytes, monocytes, or nucleated red blood cells.

CONCLUSIONQHP combined CHPSSR could improve HIF-1alpha levels in bone marrow lymphocytes, monocytes, granulocytes, and nucleated red blood cells of MDS patients, thus improving Hb levels of MDS patients, and improving their anemia and correlated symptoms.

Adolescent ; Adult ; Aged ; Arsenicals ; therapeutic use ; Bone Marrow ; Bone Marrow Cells ; drug effects ; metabolism ; Case-Control Studies ; Drugs, Chinese Herbal ; therapeutic use ; Female ; Humans ; Hypoxia-Inducible Factor 1, alpha Subunit ; metabolism ; Male ; Middle Aged ; Monocytes ; drug effects ; metabolism ; Myelodysplastic Syndromes ; drug therapy ; metabolism ; Phytotherapy ; Young Adult

Objective To evaluate the clinical efficiency and seeurity of SilverHawk directional atherectomy device in treating arteriosclerosis obliterans of lower extremity.Methods Seyen patients with lower extremity ischemia were treated with SilverHawk directional atherectomy.The lesions length varied from 1.8 to 14.5 cm.Clinical symptoms(Fontaine classification)included 4 cases of grade Ⅱ b,1 case of grade Ⅲ,2 cases of grade Ⅳ.The ABI varied from 0.28 to 0.65.Patency was evaluated with color duplex sonography or CTA besides clinical examination during follow-up.Results Seven occlusive lesions were recanalizated successfully.The technical success(residual stenosis<30%)rate was 100%. Clinical symptoms were obviously improved or disappeared.The ABI varied from 0.82 to 1.18(P=0.002),and Fontaine classification included 6 cases of Ⅰ:1 case of Ⅱ a.Patency rate was 100%and the ABI varied from 0.75 to 1.14(P=0.938).Fontaine classifications keep consistent l-6 nonths after operation.Conclusion SilverHawk drectional atherectomy Was a safe and effective way for treatment of lower arteriosclerosis obliteran.

Objective To investigate effects of different sedation methods on the mechanical ventilation patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD).Methods A total of 101 patients with mechanical ventilation in our hospital was randomly divided into observation (58 cases) and control (43 cases) groups.The observation group was given to strengthen psychological care during the day, and the night was given to the patients with AECOPD.The control group was treated with continuous analgesia and sedation, and the daily morning was executed to wake up the plan 1 ～ 2 hours.A set of indexes were observed, including white cell count, C-reactive protein, oxygen index, B-type natriuretic peptide, delirium occurred rate, unexpectedly drawn tube rate, and duration of mechanical ventilation.Results White blood cell number, C reactive protein, and oxygen index group in the observation group were significantly better than the control group [(10.1 ± 2.4) × 109/L vs (11.2 ± 2.8) × 109/L,(40.6 ± 11.6) mg/L vs (45.8 ± 12.2) mg/L, and (285.6 ±45.1) vs (268.2 ±42.6)] (P ＜0.05).The incidence of delirium rate in the observation group was significantly lower than the control group [30/58(51.7％) vs 31/43(72.1％)] (P ＜0.05).The mechanical ventilation time in the observation group was significantly shorter than the control group [(8.41 ± 3.96) d vs (10.35 ± 5.57) d] (P ＜ 0.05).There was no significant difference between B type natriuretic peptide and accidental extubation rate (P ＞ 0.05).Conclusions The night program sedation program can significantly improve AECOPD mechanical ventilation in patients with inflammatory index and oxygen index, reduces the incidence of delirium in patients with acute exacerbation of chronic obstructive pulmonary disease, does not increase the accidental extubation rate, and significantly shortens the AECOPD patients with mechanical ventilation duration of mechanical ventilation, as a mechanical ventilation in AECOPD patients who killed one of the options.

BACKGROUND: The determination of the normal acetabular spatial contour, the pattern of its curvature transformation, and adaptability between acetabulum and femoral head plays an important role in the description of spatial relationship of the hip joint the management and evaluation of hip disorders, especially developmental dysplasia of the hip.OBJECTIVE: Based on spiral threa-dimensional CT data of normal hip joints, to create isoline map of each acetabulum and femoral head by a well-developed and cooperating programmed computer software so as to determine the normal acetabular spatial contour and the pattern of its curvature transformation.METHODS: Three-dimensional CT data of 56 normal hip joints, aged from 6 to 17 years, were collected. After three-dimensional simulation and surface shade display (SSD) reconstruction by a well-developed VxWork software, the isoline map was created using contours map in Gecmorphology, and each isoline map of the normal acetabulum and femoral head was analyzed via a specific computer software (Terrain). RESULTS AND CONCLUSION: The isoline array of normal acetabulum revealed the modality of some concentric "C" or oval "O",with at least one close "O" at the central zone, indicating that there existed dome shape at the superior zone of acetabulum. The modality of sparse isolines around dome illustrated larger curvature radius and more slowgoing change of spatial contour transformation of this zone, while the dense isolines on the bottom zone Of acetabulum represented a small curvature radius,steep shape, and rapid changing profile of this zone. The isoline array of normal femoral head was multiple concentric "O" with different space between each line. The congruence isolines of acetabular dome and superior surface of femoral head emerged as the similar trend of geomorphological characteristics, revealing that both the spatial contour and the curvature pattern between acatabulum and femoral head are well-adaptable to each other. Results show that the isolines of acatabulum and femoral headcan stersoscopicly visualize the spatial contour and curvature pattern of the topographic surface of the hip joint.

BACKGROUND: The application of adipose derived stromal cells to tissue engineering has been more and more popular around the world. Compatibility of scaffold material is the key point for its further research.OBJECTIVE: To determine the growth rules of rabbit adipose-derived stromal cells with polylactic-co-glycolic acid (PLGA).DESIGN, TIME AND SETTING: An in vitro study was performed at the Institute of Ophthalmology, Otolaryngology Hospital,Fudan University and Shanghai Tissue Engineering Center from September 2007 to March 2009.MATERIALS: Six female New Zealand rabbits aged six months were used for extraction of adipose-derived stromal cells. PLGA was provided by Sigma, USA.METHODS: Adipose tissue was harvested from the nape fat pad of the rabbits following anesthesia. Primary cultured cells were established using type I collagenase and cell cultures were maintained with DMEM containing 10% volume fraction of fetal bovine serum. Cells were passaged when 80% was confluent. The fourth passages of cells were utilized for the study. PLGA consisted of polylactic acid and polyglycolic acid as the ratio of 7:3, and the relative molecular mass was 104900.MAIN OUTCOME MEASURES: Initially, the adherent rate of cells to scaffold was detected. After one week co-culture, the scaffold bearing adipose-derived stromal cells labeled with Dio agent were investigated by fluorescence inverse microscope,scanning electron microscopy and laser scanning microscope.RESULTS: The best adherent rate of adipose-derived stromal cells with PLGA reached 99%. After one-week-incubation in vitro,cells of fiber-shaped or ovule-shaped proliferated well and exhibited stratified growth on the surface of PLGA scaffold. In addition,it also secreted visible extracellular matrices, which could be examined by scanning electron microscopic examination.Meanwhile, the adipose-derived stromal cells grew well and distributed equably inside the PLGA in terms of the investigation with laser scanning microscope.CONCLUSION: The compatibility of adipose-derived stromal cells to PLGA in vitro was well.