Objective To research early diagnosis and treatment of acute spontaneous spinal epidural hematoma (SSEH). Methods Medical records of 13 SSEH patients adimtted in Timone Ste Marguerite Hospital,France and Ruijin Hospital,China from 1985 to 2000 were retrospectively reviewed.The etiology, neurological symptoms, neuroradiology therapy, as well as the prognosis of this rare disease are discussed in comparison with the literaturs.Results Six of thirteen SSEH wee relatd with innormal coagulation. All patients had the same original symptom which was radicular pain. Eleven cases were diagnosed by MRI. After decompressive surgery, recovery occurred in 3 of 5 patients. Five of 8 patients had a favorable outcome after medical treatment. Conclusions The majority of spontaneous hematomas results from a rupture of the venous plexus. It could be diagnosed according typical symptoms and MRI. Decompressive surgery is urgent but not unique. A idiosyncratic type which has a spontaneous complete recovery could be found.

Objective To investigate proliferating cell nuclear antigen (PCNA) gene expression in retinal pigment epithelium (RPE) cells and inhibition of antisense oligonucleotides(AS OND) encoding PCNA mRNA to gene expression and proliferation of RPE cells, so as to search for new genetic therapy way for pro1iferative vitreoretinopathy (PVR). Methods (1) Rabbit RPE cells cultured in vitro were detected for PCNA expression by streptoavidin biotin enzyme complex (SABC) immunohistochemistry at several times. (2) The liposome mediated synthetic antisense oligodeoxynucleotides (AS ODN) and sense oligodeoxynucleotides (S ODN) encoding PCNA were delivered to the RPE cells at different concentrations, then PCNA expresstion were detected by immunohistochemistry. (3) Exposed to different concentrations of AS ODN and S ODN, growth activity and suppressive rate of RPE cells were measured by methyl thiazolyl tetrazolium (MTT) methods. Results (1) PCNA were expressed in RPE cells, culmination in 48 hours of culture. (2) PCNA expression were markedly suppressed in the RPE cells treated with 0.28 and 1.12 ?mol/L PCNA AS ODN . (3) 0.28 ?mol/L and 1.12 ?mol/L PCNA AS ODN significantly inhibited proliferative activity of RPE cells in a dose dependent manner, the arrest rates of cellular growth reached 53% and 81% respectively. Conclusion AS ODN complementary to PCNA mRNA at some concentration can sequence specifically suppress PCNA expression in RPE cells and cellular proliferative activity, and show potential application to further experimental study for PVR genetic medication.

Objective To explore the expression and activation of transcription factor E2F1 in cultured human retinal pigment epithelium (RPE) cells. Methods Cultured human RPE cells were divided into two groups after synchronization: one was cultured in Dulbecco′s modified Eagle′s medium (DMEM) without serum; the other was cultured in DMEM supplemented with 20% serum of newborn calf. The expressions of E2F1 protein in two groups were detected by Western blot analysis. The E2F1 DNA binding activities were measured by gel mobility shift assay(EMSA). Results E2F1 protein of 60 000 molecular weight was detected in the nuclear extract of human RPE cells, and serum stimulation could increase its expression( P

In order to investigate the application of par plana vitrectomy in the treatment of combined rhegmatogenous retinal detachment (RRD) and choroidal detachment (CD), 12 eyes of 12 cases of combined RRD and CD were retrospectively analyzed. Twelve eyes of 12 cases were subjected to par plana vitrectomy. Six mm infusion channels were used. Pars plana vitrectomy, membrane peeling and internal fluid－gas exchange with encircling scleral buckle placement were performed in a standard fashion. One patient received injection of silicone oil. Hormones were routinely administered pre- and post-operation. The results showed that the intraocular pressure was rapidly reconstructed in the 12 eyes of 12 cases, the fluid in the subchoroidal cavity was drained via the three sclera incisions. The detached choroidea replaced. No other sclera incision was needed to drain the fluid in the subchoroidal cavivity. The follow－up after operation lasted 2 to 16 months. The 12eyes were replaced anatomically. No postoperative proliferation of vitreous body and retina was induced. It was suggested that par plana vitrectomy was the first choice in the treatment of CD combined with RCD.

0.05),but the rate of GG genotype in cerebral infarction group was significantly higher than that in normal control group(P

Objective To investigate the clinical significance and the content of soluble P selection in the patients with ischemic cerebrovascular disease(ICVD)Methods Using the means of an enzyme linked immunosorbent assay,the contents of soluble P selectin (sP selection) were measured in 28 patients with ICVD,45 patients with stroke and 33 health persons.We observed its content changes form atherosclerosis to different stages of ICVD,and the effect of M ASA.Results sP selection in different stages of ICVD group was higher than in the patients with atherosclerosis( P

Objective To investigate the inhibitive effect of E2F decoy oligodeoxynucleotides (E2F decoy ODNs) on cultured human retinal pigment epithelial (HRPE) cells. Methods E2F decoy ODNs or scramble decoy ODNs at varied concentrations were put into the HRPE cells mediated by lipofectamine TM2000. The proliferative activity of HRPE was detected by methythiazolyl-terazollium assay, and the competitive combinative activity of E2F decoy ODNs and transcription factor E2F was detected by electrophoresis mobility-shift assay. Results The proliferation of HRPE was inhibited markedly by E2F decoy ODNs at the concentration of 0.2 ?mol/L (P=0.002) in a dose-dependent manner but not by scrambled decoy. The results of electrophoresis mobility-shift assay showed that the combinative activity of transcription factor E2F was abolished completely by E2F decoy ODNs. Conclusions E2F decoy ODNs may sequence-specifically inhibit the combinative activity of transcription factor E2F,and inhibit the proliferation of HRPE cells.

Objective T Iymphocytes were considered to be activated and involved in the ischemia-reperfusion injury during lung transplantation.Carbon dioxide pneumoperitoneum was shown to have inhibitory activity on the immune system.This study was designed to_investigate the effects of the effects of the therapeutic hypercapnia on the T Iymphocytes of rats in which ischemia-reperfusion injury occurred during lung transplantation.Melhods Sixteen Wismr rats weighed 300 to 400 g were randomized into control group(8 rats) or therapeutic group (8 ras)after transplantaion.Animals in both grotups were Oven inluded nitrogen(50%)and oxygen N2+(50%) at baseline. Animats in the control groap were given irked nitrogen (50%)and oxygen(50%)throughout the experiment ,and that in the thera-peutic group were given mixed gas which was composed of nitroged(40%),oxygen(60%)and carbon dioxide in appropriate concentra-tion to keep arterial partial pressure of carbon dioxide (PaCO2)at 80-100 mm Hg and FiO2 at 50%after reperfusion.All of the ani-mals were observed for 90 minutes after reperfusion.Mean arterial pressure(MAP) and arterila partial pressure of oxygen(PaO2) were recorded at baseline and every 15 minutes during the period of reperfusion.The expression of CD3,CD4 and CD28 in the peripheral blood was,examined,and the concentrations of Ifn-у,IL-2,IL-4 and IL-1O in the homogenate were measured after the experiment. Histological analysis of samples from transplanted lungs was performed.Resykts After reoerfysion,MAP and PaO2 in the therapeutic group were higher signitleantly than that in the group(P

AIM: To investigate the platelet aggregations in patients with coronary heart disease(CHD) and the effect of ticlopidine treatment. METHODS: Platelet aggregations induced by adenosine diphosphate(ADP), epinephrine(EPI), collagen(Coll), arachidonic acid(ACA) in CHD group before and after ticlopidine treatment were measured by turbidity assay. RESULTS: Maximum ratios of platelet aggregations (max%) induced by ADP,EPI in CHD group (0.78?0.23,0.86?0.25) were significantly higher than that of control group (0.65?0.19,0.73?0.21, P

AIM: To study the effect of proliferating cell nucler antigen antisense oligonucleotide on ex vivo expansion of cord blood CD34~+ hematopoietic stem/progenitor cells.METHODS: CD34~+ cells were purified from fresh cord blood by immunomagnetic beads.CD34~+ cells were incubated in liquid culture system with different concentrations of(PCNA-ASODN).Using flow cytometry,the number of different kinds of stem/progenitor cells and PCNA expression were measured after CD34~+ cell incubation.RESULTS: PCNA was lowly expressed in low experiential group,with a positive rate of(27.2?3.6)% and(19.0?1.5)%,the positive rate of control group was(53.8?8.3)%(P