Adult ; Aged ; Breast Neoplasms ; blood ; pathology ; Carcinoembryonic Antigen ; blood ; genetics ; Carcinoma, Ductal, Breast ; blood ; secondary ; Female ; Fibroadenoma ; blood ; Fibrocystic Breast Disease ; blood ; Humans ; Lymphatic Metastasis ; Middle Aged ; Neoplasm Staging ; RNA, Messenger ; blood ; genetics

Objective To study bioactive metabolite produced by marine actinomyces M326.Methods Based on the index of antimicrobial activity,the relation between activity of metabolite and conditions of culture in different media and time were researched,and the stability of bioactive metabolite treated with different temperatures and pH were obseved,and the bioactive ingredients were extracted and separated by organic solvent and by macroporous resin.Results The GBP medium made by artificial seawater or distilled water were suitable for production of strong bioactive metabolites.The antimicrobial substances were stable under pH 2～11 and were heat-resistant under strong acidic condition.It could not be extracted by usual organic solvent,but could be absorbed by AB-8 macroporous resin under alkaline situation.Conclusion The metabolites have strong activity against gram-positive bacteria and have different antimicrobial activities against gram-negative bacteria and drug-resistant strains moreover,the polarity of antimicrobial substances is strong.

Objective To investigate the expression of angiotensinⅡ (Ang Ⅱ ) and its type 1 receptor (AT1) in circulation, placenta and kidney of the rots preeclampsia. Methods Preedampsia rat model was developed by inhibitor of nitric oxide synthase (L-NAME). The systolic blood pressure (SBP), 24 h urine protein, hepatic and renal function were compared among the precelampsia group, the normal pregnant group and nonpregnant control group. The kidney tissue was observed by light microscopy. ELISA and radioimmunoassay were used to detect Ang Ⅱ in rat plasma and kidney homogenate respectively. Placental AT1 was measured by Westem blot. The level of kidney AT1 was evaluated by immunohistochemistry and Western blot. Results In preeclampsia rats, SBP and 24 h urine protein were significantly higher compared with control groups. Compared to normal pregnant group, plasma Ang Ⅱ of preeclampsia rats was much higher [(0.706±0.086) ng/L vs (0.540±0.085) ng/L, P＜0.05]; placental AT1 was increased by 46%(P＜ 0.05); kidney Ang Ⅱ was decreased signigicantly [(65.543±40.634) ng/g vs (165.543±33.078) ng/g, P＜0.05]. The expression of ATI in kidney of preeclampsia rats was reduced evidently,which was only 33% of normal pregnancy group and 59% of nonpregnant control greup,respeetively (P＜0.05). Conclusions In preeclampsia rat model, the circulating Ang Ⅱ is increased, the placental RAS isactivated, while the kidney BAS is suppressed. The underlying mechanism of proteinuria and kidney damage associated with this phenomenon in preeclampsia needs further research.

Objective To make a preliminary investigation and summary of the technique and efficacy of the novel intracranial stent, Enterprise, together with hydro-detachable coils for the treatment of very small intracranial wide-necked aneurysms (diameter<3 nun and body-to-neck ratio<1.5). Methods Six cases with very small intracranial wide-necked aneurysms were treated with Enterprise stents and hydro-detachable coils. In 5 cases the Enterprise stent was implanted to cover the neck of the aneurysm, which was followed by the introduction of a microcatheter into the aneurysmal sac through the stent mesh to stuff hydro-detachable coils in order to fill the aneurysmal sac. In the remaining case, the microcatheter was placed into the aneurysmal sac before the Enterprise stent was inserted to embolize the aneurysm. Postoperative follow-up was conducted for 3-6 months. Results The operation was successfully completed in all 6 patients, with the implanted stents being in right place. The parent arteries remained patency in all patients. No complications occurred. Complete occlusion of aneurysmal cavity was obtained in four cases, and the occlusion degree of the aneurysmal cavity above 95% was seen in 2 cases. After the procedure, all the patients recovered well. Neither rebleeding nor symptoms related to thrombosis occurred during a clinic follow-up of 3-6 months. Conclusion Endovasculur embolization with Enterprise stent together with hydro-detachable coils is a safe and effective method for the treatment of very small intracranial wide-necked aneurysms. However, its long-term effect needs to be further observed.

Objective To investigate the association of the expressions of glomerular nephrin, vascular endothelial growth factor (VEGF) and its receptor (VEGFR) with proteinuria in preeclampsia rats. Methods A rat model of preeclampsia was developed by inhibitor of nitric oxide synthase (L-NAME). The systolic blood pressure (SBP) and 24 h urine protein were compared among the normal female group (n=6), the normal pregnant group (n=8), nonpregnant control group (n=6) and preeclampsia group(n=8). The kidney biopsies of each group were observed by light and electron microscopy. The glomerular nephrin was detected by Western blotting and real-time PCR. Immunofluorescence was used to detect the expression of WT1. The level of glomerular VEGF and VEGFR (Flt-1 and Flk-1) were evaluated by Western blotting. Results The level of glomerular nephrin protein in the rats with preeclampsia (0.0726±0.0074) was significantly lower compared with normal female group (0.3795±0.0509), normal pregnant group (0.2361±0.0437) and nonpregnant control group (0.7265±0.0503) (P＜0.01, respectively), while the levels of nephrin mRNA were not significantly different among 4 groups. The expression of WT1 was not significantly different among 4 groups as well. The level of glomerular VEGF in preeclampsia group (1.5429±0.0898) was significantly higher compared with normal female group (1.1870±0.1160), normal pregnant group (1.3741 ±0.1165) and nonpregnant control group (1.0155±0.0742)(P＜0.01,respectively). VEGFR (Flt-1 and Flk-1) was also significantly higher in preeclampsia rats compared with other control groups (P＜0.05, respectively). Conclusions In preeclampsia rats, nephrin is decreased significantly and the glomerular VEGF-VEGFR is increased significantly compared with the other control groups. The abnormal expression of nephrin and VEGF-VEGFR may be involved in the preeclampsia proteinuria. The underlying mechanism of this phenomenon needs further research.

Objective To investigate the modulation for multidrug resistance cell line K562/A02 us- ing a specific siRNA against mdrl,GST?.Methods siRNA were synthesized targeting the coding region se- quences of mdrl(79～99 nt)and GST?(308～327nt)respectively,and cloned to plasmid pSilence2.1-U6.The cloned products pSilenee-mdr1 and pSilence-GST? were transfected into K562/A02 cells.Expression of mdr1 and GST? mRNA were assayed by SYBR Green Ⅰ real-time PCR.The apoptosis of cell line K562/A02 was examined by Flow cytometry,50% inhibition concentration(IC_(50))of doxorubicin on K562/A02 cell was deter- mined by MTT method.Results The siRNA expression vector against mdr1,GST? mRNA was constructed successfully.After transfected with pSilenee-mdr1,the expression of mdr1 mRNA in K562/A02 in was re- duced 71.5 % compared to the mock transfeetion,from(2.8?1.65)?10~8 copy/?g RNA to(3.9?2.37)?10~7 copy/?g RNA(P

Background Antagonists against vascular endothelial growth factor (VECF) play key roles in treating and preventing neovascular ophthalmopathy. As a novel anti-angiogenic factor, insulin-like growth factor binding protein-related protein 1 (IGFBP-rP1) might be an antagonist against VEGF in eye. Objective This study was to explore the inhibitory effect of IGFBP-rP1, a novel anti-angiogenic factor, on VEGF-induced retinal angiogenesis in vitro. Methods The retina-choroid endothelial cell line ( RF/6A ) was cultured in DMEM containing 10% fetal bovine serum. Culture cells were divided into control group(free-serum culture group) ,10mg/L VEGF culture group and different concentrations of IGFBP-rP1 (50,100,200 mg/L) +10 mg/L VEGF group. The expression of IGFBP-rP1 in the cells was detected by immunofluorescence assay. The proliferation and migration of RF/6A cells were evaluated using MTS colorimetric assay and the chemotactic motility assay, respectively. Flow cytometry was used to detect the apoptosis of RF/6A cells. Results The immunofluorescence assay RF/6A cells showed the green fluorescence in cytoplasm and red fluorescence in nuclei after cells were exposed to any concentration of IGFBP-rP1 ,but only red fluorescence was seen in nuclei in control cells. After stimulation of 10 mg/L VEGF,the proliferation value (A490) was elevated and the numbers of cell migration were increased in comparison with control group (t = -15. 191, P = 0. 000; t = -21. 274, P = 0. 000 ) , but the cellular apoptosis rate was lower than the control group (t - 10. 228, P = 0. 000 ) . After treated with various concentrations of IGFBP-rP +10% VEGF, the proliferation and migration of RF/6A cells were significantly decreased in comparison with only 10% VEGF group (F = 534. 158,P = 0. 000;F = 2742. 323,P = 0.000,respectively) ,and the inhibitory effects were gradually enhanced with the increase of IGFBP-rP1 levels (P<0. 05). The apoptosis rate of RF/6A cells in 50,100 and 200 mg/L + 10 mg/L VEGF groups increased by ( 1. 26±0. 04)% ,( 1. 50±0. 07)% and ( 1. 93±0. 27)% respectively,showing significant differences among different groups ( F = 274. 273, P = 0. 000). Conclusion IGFBP-rP1 inhibits the proliferation and activity of retina and choroid endothelial cells induced by VEGF at a concentration-independent manner. It appears to be as a novel endogenous inhibitory factor in retinal angiogenesis.

Objective To study the expression and value of CXCR1 and CXCR2 on neutrophils, CD14~+ monocytes and CD3~+ T lymphocytes of peripberol blood of ankylosing spondylitis(AS)patients and to investigate the correlation between CXCR1,CXCR2 and disease activity.Methods A case control study was designed and enrolled 30 active AS,30 active rheumatoid arthritis(RA)and 30 healthy controls.The levels of CXCR1 and CXCR2 expression on neutrophils,CD3~+ T cells and CD14~+ monocytes of peripheral blood of the patients and healthy controls enrolled were measured and analyzed by flow cytometry by measuring the mean fluorescence intensity(MFI)channel.The correlations between the level of CXCR1 and CXCR2 anti disease activity or functional index of AS such as BASDAI,BASF1,ESR and CRP were analyzed.Results The MFI of CXCR1 expression on CD3~+ T lymphocytes of peripheral blood was significantly higher in AS patients (41?24)than that in RA patients(18?10)and healthy controls(19?7)(P

Objective: To examine the effect of dietary behaviors on handgrip strength loss among the elderly, so as to provide insights into the prevention of handgrip strength loss. Methods : Based on the health surveillance cohort among the elderly in Zhejiang Province, two villages or communities were randomly sampled from each of Shaoxing and Zhoushan cities using a multi-stage cluster sampling method, and all residents that had lived in local areas for one year and longer and had an age of 60 years and older were enrolled. Participants' demographics, dietary behaviors, smoking, drinking, and exercise were collected through questionnaire surveys, and the height, body weight and handgrip strength were measured. The handgrip strength loss was diagnosed according the 2019 Consensus Update on Sarcopenia Diagnosis and Treatment proposed by Asian Working Group for Sarcopenia, and the effect of dietary behaviors on handgrip strength loss was examined using a multivariable logistic regression model. Results: A total of 1 265 residents were enrolled, with a mean age of (70.67±7.30) years, and including 565 men (44.66%) and 700 women (55.34%). The overall prevalence of handgrip strength loss was 42.85% among the participants, and the prevalence was 40.35% in men and 44.86% in women, respectively. Multivariable logistic regression analysis showed that nut intake for 1 to 3 times a week (OR=0.180, 95%CI: 0.088-0.367) and for 4 to 6 times a week (OR=0.241, 95%CI: 0.113-0.514) led to a reduced risk of handgrip strength loss among the elderly, and intake of sugary drinks for 4 to 6 times a week led to an increased risk of handgrip strength loss among the elderly (OR=2.298, 95%CI: 1.120-4.714) after adjustment for age, body mass index, educational level and exercise. Conclusion Intake of nuts and sugary drinks may affect the development of handgrip strength loss among the elderly.

OBJECTIVE: To investigate effects of antioxidant stress protein heme oxygenase-1 (HO-1) on lipopolysaccharide (LPS)-induced endoplasmic reticulum stress (ERS) of rat hepatocytes. METHODS: The BRL cells (rat hepatocyte cell line) were cultured. The hepatocytes were treated with LPS, LPS+HO-1 siRNA, HO-1 siRNA and PBS solution, respectively. The cell viability was measured by trypan blue exclusion test. The apoptosis cells were detected by the fluorescent dye Hoechst 33258. Expressions of GRP78, CHOP, caspase-12 and HO-1 were detected by Western blotting. RESULTS: LPS caused an increase of HO-1 protein expression of rat hepatocytes in a dose-dependent and time-dependent manner, a up-regulation of GRP78, CHOP and caspase-12, a decrease in cell viability, and an increase in apoptosis rate of hepatocytes. Pretreatment of HO-1 siRNA inhibited the up-regulation of LPS-induced HO-1, however, aggravated ERS and cellular injury. CONCLUSION HO-1 inhibites ERS-mediated cellular injury of rat hepatocytes induced by LPS.
Animals ; Apoptosis/physiology* ; Endoplasmic Reticulum/metabolism* ; Endoplasmic Reticulum Stress/physiology* ; Heme Oxygenase-1/pharmacology* ; Hepatocytes/metabolism* ; Lipopolysaccharides/pharmacology* ; Rats