Abnormalities, Multiple ; diagnosis ; Colon ; abnormalities ; Humans ; Infant, Newborn ; Male ; Peristalsis ; Syndrome ; Urinary Bladder ; abnormalities

This study examined the effect of resveratrol on the secretion of vascular endothelial growth factor (VEGF) and subsequent proliferation of human leukemia U937 cells, and explored the mechanisms involved. Human leukemia U937 cells were treated with resveratrol of different concentrations (12.5-200 micromol/L) for different time lengths (12-48 h). The proliferation of the U937 leukemic cells was determined by MTT assay. Apoptosis was observed by Annexin-V-FIFC/PI double staining and flow cytometry (FCM). Cells cycle was analyzed by PI staining and FCM. The content of VEGF was determined by ELISA. Human umbilical vein endothelial cells were examined for vasoformation in vitro after exposures to resveratrol of various concentrations. The results showed that resveratrol inhibited the proliferation of U937 leukemia cells in a dose-and time-dependent manner. Resveratrol induced apoptosis and S-phase cell cycle arrest in human leukemic U937 cells. Resveratrol inhibited the secretion of VEGF in U937 cells. Resveratrol inhibited the vasoformation of human vein endothelial cells in a dose-dependent manner. It was concluded that resveratrol could down-regulate the secretion of VEGF, induce apoptosis and suppress the proliferation of U937 cells.
Angiogenesis Inhibitors/*pharmacology ; Antineoplastic Agents, Phytogenic/pharmacology ; Apoptosis/*drug effects ; Cell Proliferation/drug effects ; Down-Regulation ; Gene Expression Regulation, Neoplastic ; Stilbenes/*pharmacology ; U937 Cells ; Vascular Endothelial Growth Factor A/*secretion

Objective To study the relation between Jiegeng loading drug up in Tianwang Buxin Wan and brain,heart and lung.Method 32 Wister rats were randomly divided into four groups(8 rats in each group),namely,control group,Jiegeng group,Tianwang Buxin Wan group,Tianwang Buxin Wan lacked Jiegeng group.The levels of cyclic nucleotide in the brain,heart and lung were assayed by radioimmunoassay.Result The levels of cAMP in the lung in every drug group were significantly increased compared with that of control group.It was significant on the level of cAMP in the lung between Tianwang Buxin Wan group and Tianwang Buxin Wan lacked Jiegeng group.Conclusion It was the lung that linked the effect of Jiegeng loading drug up in Tianwang Buxin Wan.

Objective To observe the neuroprotective effect of celecoxib against degeneration of dopaminergic neurons caused by lipopolysaccharide in vivo.Methods The rat model of Parkinson disease(PD)was established by intranigral injection of lipopolysaccharide.Sprague-Dawley rats were randomly divided into control group,PD group,and celecoxib group.Behavioural changes were recorded,and the expressions of tyrosine hydroxylase(TH)and cyclooxygenase-2(COX-2)were determined by immunohistochmistry and Western blot.Results No behavioral change was found in control group.There was significant difference in the number of circling behavior between PD and celecoxib groups(196.90±9.52 vs 109.30±9.38,P＜0.01).The number of TH-positive cells and the expression of TH protein in rat substantia nigra were significantly higher in celecoxib group than in PD group(P＜0.01).Compared with PD group,the number of COX-2positive cells and the expression of COX-2 protein were significant lower in celecoxib group(P＜0.01).Conclusion Celecoxib has neuroprotective effect on the degeneration of dopaminergic neurons caused by lipopolysaccharide in vivo.

Adolescent ; Adult ; Aged ; Bone Marrow ; pathology ; Child ; Female ; Humans ; Lymphoma, Non-Hodgkin ; diagnosis ; pathology ; Male ; Middle Aged ; Spleen ; pathology ; Young Adult

Objective To study formulation and characteristics of self-microemulsifying drug delivery system for breviscapine(BRV-SMEDDS).Methods The optimum formulations of BRV-SMEDDS were screened by solubility tests,formula compatibility,and pseudo-ternary phase diagrams.And the physicochemical characters,dissolution in vitro and in situ rat's intestine absorption of BRV-SMEDDS were also observed.Results The optimum formulation of SMEDDS was composed of Maisine 35-1-Cremophor RH40-PEG400-TEA=25∶40∶35∶7.The particle diameter was 88.6 nm.The percent of accumulated dissolution of BRV in SMEDDS in vitro was up to 97.8% at 1h,which was 8.0 times as much as that of BRV powder,and 5.1 times as BRV tablets.In the tests of in situ rat's intestine absorption,the permeability coefficient of BRV-SMEDDS was increased by 3.4 times as much as BRV powder,and 3.3 times as BRV tablets.Conclusion The dissolution and absorption of BRV is improved by formulation of SMEDDS.It could provide reference for the new dosage form of BRV.

Aquaporin1 (AQP1) is a member of a family of specific channel proteins which could mediate the trans-biofilm transportation of small molecules such as water.Recent studies have shown that AQP1 is highly expressed in cancer tissues.It also has an effect on the proliferation and migration of cancer cells, angiogenesis in cancer and so on.AQP1 is expected to be a marker of screening, diagnosis, treatment and prognosis at tumor early stage.

Background and purpose:Heparanase is an endo?-D-glucuronindise that degrades the HS sdie chains of heparin sulphate proteoglycans in ECM,expressed in the human normal placenta and immune organ.Expression of heparanase significantly increases in many kinds of cancers,it plays a central and specific role in the regulation of tumor metastasis and invasion.This article evaluates the effect of heparanase gene on the proliferation,adhesion and invasion of human ovarian cancer cell line SKOV3 cells.Methods:Human ovarian cancer cell line SKOV3 was cultured in optimum medium and transfected with pCDNA3.0-HPA by Lipofectamine~(TM2000),and cells transfected with blank vector pCDNA3.0 were used as control.The expression of HPA mRNA,and HPA protein in SKOV3,SKOV3/neo,and SKOV3/HPA were detected by RT-PCR and immunohistochemical staining;cell growth kinetics and the ability of invading was detected by MTT and transwell-ECM methode;the ability of adhesion and separation among same cells were evaluated by cell-adhering and separating method;Flow cytometry was used to test cell cycle.Results:RT-PCR and immunohistochemical staining showed that over-expression of HPA mRNA and protein in pCDNA3.0-HPA transfected cells in comparison with that in the parental SKOV3 cells and the cells transfected with blank vector(P

To study the effect of wearing overnight orthokeratology ( OK) contact lens on corneal topography and tears in adolescents.METHODS: The diopter, corneal curvature, corneal surface regularity index ( SRl ) , tear break - up time ( BUT ) , Schirmer l test, and corneal fluorescent ( FL ) were recordedon 40 (80 eyes) adolescent myopia patients (mean age 13. 68±2. 32 years), who had worn OK contact lensfor more than 1 year, with mean spherical equivalent refraction -3. 61 ± 1. 48D before wearing OK contact lens. These indexes were tested and recorded before the patients' wearing OK contact lens and 5 times (1wk and 1, 3, 6, 12mo after the first wearing) during the patients' overnight wearing OK contact lens for 8~10 hours per day.RESULTS: Compared with pre - wearing, at post -wearing OK contact lens 12mo, the mean spherical equivalent refraction was apparently decreased from -3.61±1. 48D to -1. 39±1. 31D(P<0. 01). The corneal curvature was significantly flattened from 42. 29 ± 1. 55D to 40.13±1. 41D (P<0. 01). Mean SRl was increased from 0. 34± 0. 01 to 0. 37 ± 0. 01 ( P<0. 01 ). Mean BUT was decreased from 10. 39±2. 25s to 7. 26±1. 77s (P<0. 01). These indexes were stable at 1wk after wearing OK contact lens overnight and had no significant differences during the following (1, 3, 6, 12mo after wearing) tests (P > 0. 05 ). There were no significant differences on Schirmer▏test during the 12mo of OK wearing(P>0. 05). The cases of corneal fluorescent staining increased were mainly grade l, and the number of corneal staining grade l at 1 wk and 1, 3, 6, 12 mo after wearing were 15 eyes (18. 8%), 9 eyes (11. 3%),13 eyes (16. 3%), 9 eyes (11. 3%), and 12 eyes (15. 0%). BUT of corneal staining grade l wasdecreased significantly, compared with the BUT of corneal staining grade 0 during the 12mo of OK wearing (P<0. 05). CONCLUSlON: OK contact lens can significantly decrease the degree of myopia and K value of corneal curvature without changing tear volume. However, tear film stability weakens, which needs regular follow-up.

Objective To observe the influence of diabetes mellitus or insulin on fluctuations of serum potassium in patients with maintenance hemodialysis.Methods 52 cases of hemodialysis patients,including 30 non-diabetes patients,11 patients with diabetes but not using insulin,11 diabetes patients using insulin.At the time of 0,24,48 h during dialysis,we collected serum samples from the 52 patients,serum potassium was compared among the three groups.Results On 0,24,48 h,serum potassium level of the diabetes but not using insulin group had no significant difference with the non-diabetes group.While in diabetes using insulin group,serum potassium level was lower compared with the non-diabetes group or diabetes not using insulin group.Conclusions Diabetes itself had no effect on serum potassium fluctuations of maintenance hemodialysis (MHD) patients,however,insulin can reduce the pre-dialysis serum potassium levels of MHD patients.