Background To suppress vascular endothelial growth factor (VEGF) is a researching hot topic for the treatment and prevention of retinal neovascularization.Some detectable efficacy of VEGF small interference RNA (VEGF siRNA) in anti-tumor neovascularization has been well-known.But relevant study on VEGF siRNA on retinal neovascularization is seldom.Objective Present study was to investigate the inhibiting effect of VEGF siRNA on retinal neovascularization.Methods The 48 clean C57BL/6J mice aged 7-day-old were randomly divided into normoxia group,hypoxia control group,vector group and VEGF siRNA group and 12 mice for each.Hypoxia models were established by raising the pups with mother mice in the airtight oxygen-cabin for 5 days.The lipofectamineTM 2000 (LF2000)-mediated vector plasmids or VEGF siRNA recombinant plasmids were then injected intravitreally in 12 12-day-old pup mice respectively.The animals were sacrificed in 1 week after intravitreal injection,and the numbers of vascular endothelial cell nuclei extending beyond the internal limiting membrane (ILM) were counted by hematoxylin-eosin stain.The expressions of VEGF protein and mRNA in retina were assayed by immunoinfluorescence technique and RT-PCR.Results The numbers of vascular endothelial cell nuclei extending beyond the ILM were 0.19±0.09,24.89±2.03,23.65±2.15 and 8.83±1.12 in normoxia group,model control group,vector group and VEGF siRNA group separately,showing significant decrease in VEGF siRNA group compared with model control group or vector group (q=5.67,q=4.97,P＜0.01).RT-PCR revealed that VEGF mRNA was faintly expressed in mouse retina in normoxia group.However,in model control group and vector group,the level of VEGF mRNA was 52.3 times and 36.7 times more than that of normoxia group respectively and only 3.5 times in VEGF siRNA group,presenting a inhibitory rate of 43.39% of VEGF siRNA on VEGF.Immunofluorescence showed that the expression of VEGF was weaker in normoxia group and strong positive response in model control group and vector group,but the expression intensity of VEGF protein was significantly weaker in VEGF siRNA group.Conclusion VEGF siRNA recombinant plasmids can efficiently inhibit retinal neovascularization in oxygen-induced retinopathy mouse model through intravitreal injection.

Objective To explore the change and clinical significance of plasma levels of thrombomodulin(TM) in children with Kawasaki disease(KD)(n=44) before and after treatmen with intravenous immunoglobulin(IVIG).Methods Enzyme-linked immunosorbent assay(ELISA) was used to detect the plasma levels of TM in children with KD(n=44) before and after treatment with IVIG and in normal control group(n=15),respectively.Children with KD were enrolled from September 2004 to June 2006,one group(n=20) with coronary artery lesions(CALs) and another group(n=24) without CALs.The control were enrolled from heathy children in clinic service.Results The plasma level of TM in KD group before treatment with IVIG was significantly higher than that in control group(P

ObjectiveTo investigate and compare the behavioral changes, neuron loss of hippocampus and mossy fiber sprouting between pilocarpine-induced status epilepticus (SE) model and pentylenetetrazole (PTZ) kindling model in rats.MethodsAfter two different epilepsy models were made, Vedio was adopted to observe the behavioral changes. Nissl staining and Neo-timms' staining were separately used to observe and compare the neuron loss of hippocampus and mossy fiber sprouting in the dentate gyrus (DG) at different time points during epileptogenisis.ResultsNo recurrent spontaneous seizure, no neuron loss and no mossy fiber sprouting were found in PTZ kindling model; whereas obvious neuron loss was found in CA1, CA3 of hippocampus and hilus of DG, and mossy fiber sprouting were found in pilocarpine model in parallel with recurrent spontaneous seizures. ConclusionPTZ kindling model resembles absence epilepsy in human, while pilocarpine-induced status epilepticus model resembles chronic temporal epilepsy in human. Neuron loss and mossy fiber sprouting may play an important role in epileptogenisis. Pilocarpine-induced epilepsy model can be regarded as an ideal chronic temporal epilepsy model.

The present study aimed to investigate the effects of interleukin-1β (IL-1β) at different doses on collagen synthesis and decomposition in cultured cardiac fibroblasts from neonatal Sprague-Dawley rat. Cardiac fibroblasts were treated with IL-1β (0.01, 0.1, 1, 10, 100 ng/mL) for 24 h. Cell DNA synthesis was measured by (3)H-thymidine ((3)H-TdR) incorporation and collagen synthesis was measured by (3)H-proline ((3)H-Pro) incorporation. Matrix metalloproteinase (MMP) activity was measured by gelatinase zymography. MMP-2, MMP-9 protein expressions were measured by Western blot. mRNA expressions of MMP-2 and MMP-9 were detected by reverse transcription-polymerase chain reaction (RT-PCR). Compared with that in the control group, the incorporation of (3)H-TdR and (3)H-Pro decreased in high-dose IL-1β groups (≥0.1 ng/mL) but not in low-dose IL-1β group (0.01 ng/mL). IL-1β significantly increased MMP-2 and MMP-9 activities. IL-1β (0.01-100 ng/mL) also dose-dependently increased the protein and mRNA expressions of MMP-2 and MMP-9 (P<0.05, P<0.01), respectively. These results suggest that IL-1β decreases collagen synthesis and MMP activities through transcriptional and posttranslational processes via degrading collagen in a dose-dependent way. Elevation of IL-1β is possibly involved in the process of ventricular remodeling after myocardial infarction, and the concentration of IL-1β is possibly a major factor which affects the extent of ventricular remodeling.
Animals ; Cells, Cultured ; Collagen ; biosynthesis ; Fibroblasts ; cytology ; metabolism ; Interleukin-1beta ; pharmacology ; Matrix Metalloproteinase 2 ; metabolism ; Matrix Metalloproteinase 9 ; metabolism ; Myocardial Infarction ; Myocardium ; cytology ; Rats ; Rats, Sprague-Dawley ; Ventricular Remodeling

OBJECTIVETo investigate the impact of treatment modality and clinicopathologic profile on prognosis in primary fallopian tube carcinoma.

METHODSThe data of 64 cases with primary fallopian tube carcinoma treated between January 1991 and June 2006 were analyzed. The clinicopathological data were retrospectively analyzed.

RESULTSThe overall 5-year survival rate of this series was 56.3%. The overall 3- and 5-year survival rate was 84.6% and 65.4% in surgical staging group versus 58.3% and 33.3% in no surgical staging group with a significant difference between two groups (P = 0.0429; P = 0.043), which was 89.5% and 68.4% in optimal cytoreduction group versus 66.7% and 41.7% in suboptimal cytoreduction group (P = 0.0466; P = 0.0444). However, there was no significant difference in 3-year and 5-year survival rate between the group with pelvic lymphadenectomy and the group without (84.2% vs. 69.2%, P = 0.4667; 63.1% vs. 53.8%, P = 0.459), and also between the group treated using CAP/CP regimen and the group by TP regimen for chemotherapy (81.8% vs. 80.0%, P = 0.8946; 59.1% vs. 60.0% P = 0.9582). It was found that the 5-year survival was correlated with FIGO stage (III-IV vs. I - II, P = 0.0197), differentiation grade (G3 vs. G1 + G2, P = 0.003), pathologic type (other type vs. serous, P = 0.0494), lymph nodes status (positive vs. negative, P = 0.0295).

CONCLUSIONSurgical staging, optimal cytoreduction, differentiation grade, pathologic type, lymph node status are important factors influencing the 5-year survival in primary fallopian tube carcinoma. Pelvic lymphadenectomy is necessary and feasible to perform during the procedure of surgical staging and cytoreduction. CAP/CP and TP regiment are similarly effective in adjuvant chemotherapy for primary fallopian tube carcinoma.

Adult ; Aged ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Chemotherapy, Adjuvant ; Cisplatin ; therapeutic use ; Cyclophosphamide ; therapeutic use ; Cystadenocarcinoma, Papillary ; drug therapy ; pathology ; surgery ; Fallopian Tube Neoplasms ; drug therapy ; pathology ; surgery ; Female ; Follow-Up Studies ; Humans ; Hysterectomy ; methods ; Lymph Node Excision ; Lymphatic Metastasis ; Middle Aged ; Neoplasm Staging ; Ovariectomy ; methods ; Paclitaxel ; Survival Rate ; Taxoids ; therapeutic use

Objective To investigate the value of the imaging findings of soft tissue abnormality in the differential diagnosis between osteomyelitis and malignant bone tumor.Methods The CT and MRI findings of soft tissue changes in 57 cases of osteomyelitis and 70 cases of malignant bone tumor were retrospectively defined,observed,recorded and statistically analyzed.Results In 57 cases of osteomyelitis, 54 cases were examined with CT,and soft tissue swelling was presented in 52 cases (degree Ⅰin 19 cases, degreeⅡin 16 cases,degree Ⅲin 17 cases).Abscess-like cysts in soft tissue occurred in 6 cases,masses in 5,air in 1,fat-fluid level in 1 and sinus tract in 1.Among 14 cases examined with MR imaging,soft tissue swelling was presented in all cases (degreeⅠin 2 cases,degree Ⅱin 6 cases and degree Ⅲin 6 cases). Abscess-like cysts appeared in 3 cases and showed high signal in diffusion weighted imaging, mass in Ⅰand fat-fluid level in 1.Among 54 cases examined with CT in 70 cases of malignant bone tumor, soft tissue swelling was presented in 44 cases (degreeⅠin 29 cases,degreeⅡin 12 cases,degreeⅢin 3 cases).Soft tissue masses appeared in 49 cases,bone shell and shell-like calcification in 16 cases and neoplastic bone and neoplastic calcified cartilage within soft tissue mass in 25 cases.Among 49 cases examined with MR imaging,soft tissue swelling was presented in 46 cases (degree Ⅰin 21 cases,degreeⅡin 17 cases and degree Ⅲin 8 cases),and soft tissue masses appeared in 43 cases.The degree of soft tissue swelling and the occurrence of abscess-like cyst,mass,bone shell or shell-liked calcification in the rim of mass,neoplastic bone or neoplastic calcified cartilage in masses showed significant difference(P

OBJECTIVETo carry out the citation analysis of publications in Chinese Journal of Preventive Medicine (CJPM) among the preventive medicine authors and analyze the impact of this magazine in preventive medicine domain.

METHODSUsing Chinese scientific periodical literature evaluation and statistical analysis system (V1.0), the citation status of all CJPM publications in 2000-2005 was analyzed, the analysis covered 21 columns, including the review, editorial and original article, the data were collected up to November, 2007.

RESULTSFrom 2000 to 2005, CJPM had more than 30 columns and carried 1196 articles and 92. 89% (1111/1196) articles were from 21 main columns. During 2003 to 2005, the impact factors of CJPM were 0. 897, 1.011 and 0. 891 respectively. Among 21 main columns, the citation frequency of six columns including original article, editorial, review, courses, discussion and case report were higher than 80%. In five columns (original article, editorial, report, review and academic trends), the average citation frequency of individual articles was more than 4 times. The citation frequency of 20 authors was higher than 20 times and these authors were from medical schools, teaching hospitals, centers of diseases control and the research institutes. The individual citation frequency of 17 articles was more than 20 times and the individual citation frequency of three articles was more than 50 times. 34.9% of the citations of the 2000-2005 CJPM articles were from the top 20 journals, and the self-citation rate was 4. 85%.

CONCLUSIONThe publications in Chinese Journal of Preventive Medicine are most frequently cited, which indicated that those publications have high quality, this journal has a great effect in preventive medicine field of China.

Bibliometrics ; China ; Periodicals as Topic ; statistics & numerical data ; Preventive Medicine

OBJECTIVE: To profile urinary metabolite variations from 1, 2-dimethylhydrazine (DMH)-induced precancerous colon rats, Jinfu Kang treated rats and healthy controls.

METHODWe used ethyl chloroformate derivatization and gas chromatography-mass spectrometry (GC-MS) based metabonomic method to analyze rat urines.

RESULTThe time-dependent variations of metabolite profile showed a progressive deviation of the metabolism in the model group from the initial pattern over time and a systemic recovery of the metabolism in the treatment group, which is consistent with the histological results. The in-depth analysis indicated that the disorder of tricarboxylic acid cycle (TCA), tryptophan metabolism, polyamine metabolism and gut flora structure were associated with DMH intervention.

CONCLUSIONMetabolic study revealed that Jinfu Kang can effectively reverse metabolic departures in DMH-induced precancerous colon rat, which is consistent with pathological results.

Animals ; Colonic Neoplasms ; chemically induced ; pathology ; Colonic Polyps ; chemically induced ; drug therapy ; urine ; Dimethylhydrazines ; pharmacology ; Drugs, Chinese Herbal ; pharmacology ; Gas Chromatography-Mass Spectrometry ; Male ; Rats ; Rats, Wistar

Coal ; Dust ; analysis ; Gases ; adverse effects ; Humans ; Male ; Middle Aged ; Occupational Exposure ; analysis ; Pulmonary Alveolar Proteinosis ; etiology

Abdominal Wall ; Adenocarcinoma ; diagnosis ; Colonic Neoplasms ; diagnosis ; Female ; Histiocytoma, Malignant Fibrous ; diagnosis ; Humans ; Ileal Neoplasms ; diagnosis ; Ileocecal Valve ; Leiomyoma ; diagnosis ; Middle Aged ; Neoplasms, Multiple Primary ; diagnosis ; Soft Tissue Neoplasms ; diagnosis ; Uterine Neoplasms ; diagnosis