? Choroidal neovascularization is the primary pathogenesis of neovascularage - related macular degeneration ( nAMD ) , and the role of vascular endothelial growth factor ( VEGF ) in neovascularization has been widely recognized. Currently, drugs target different targets of VEGF have been widely used in the treatment of nAMD. As a subtype of VEGF, placental growth factor ( PlGF) has synergistic effects with VEGF-A on promoting angiogenesis, stimulating the migration of endothelial cell proliferation and mediating immune inflammatory response. There is no expression of PlGF in mature blood vessels so PlGF hashigh specificity. ln this paper, the role of PlGF in the pathogenesis and treatment of nAMD is reviewed.

Aim A UVA-induced apoptotic model of HaCaT cells was established to investigate the impact of UVA on c-jun/cyclooxygenase-2(COX-2)and explore related molecular mechanism of the polypeptide from Chlamys farreri(PCF)protecting HaCaT cells from UVA-induced apoptosis.Methods Cells were divided into five groups:control group,UVA model group,UVA+5.69 mmol?L-1 PCF group,UVA+2.84 mmol?L-1 PCF group,UVA+1.42 mmol?L-1 PCF group.Expression level of c-jun was assayed by Real-Time PCR and Western blot.RT-PCR and Western blot analysis were used to determine the mRNA and protein levels of COX-2.Using agarose gel electrophoresis,the effects of PCF and COX-2 inhibitor celecoxib on UVA-induced apoptosis were also investigated.Results PCF and celecoxib had inhibitory effect on 8 J?cm-2 UVA-induced apoptosis of HaCaT cells.COX-2 mRNA and protein levels increased after UVA radiation and the discrepancy was significant compared with control group(P

Objective To evaluate the appl ication of CT perfusion in intra-axia l disease. Methods By applying a nuclear medicine data processi ng technique to the time-density data obtained from dynamic CT, cerebral tissue perfusion was p e rformed in 8 cases, 4 with normal findings, 2 with ischemic cerebrovascular dise ase, and 2 with gliomas. Cerebral blood perfusion maps was created and analyzed, absolute regional cerebral blood volume, regional cerebral blood flow, and mean transit time were determined and analyzed as well. Results Wit h regard to var ious degrees of perfusion impairment within the ischemic territory, thus giving rise to a very heterogenous appearance. As a rule, the center of a lesion usuall y representing the core of ischemia showed marked reduction of blood flow. At th e outer margin of a tumor area, the reduction of CBF and CBV was often less pron ounced, indicating some residual flow via collaterals, as was confirmed by the b olus delay on the time to peak time. Conclusion In the near fut ure, functional imaging techniques should have a major impact on therapeutic decision-making i n acute stroke patients, perfusion CT may be recommended even now for emergency applications in daily patient care due to its practicability.

Humans ; Neck ; Solitary Fibrous Tumors

Objective To investigate the relationship between metabolic syndrome (MS) and recurrence of urolithiasis.Methods A retrospective analysis was performed in urinary stone patients from March 2008 to February 2012.Patients were divided into MS group and non-MS group according to the diagnose criteria of metabolic syndrome (2007 version) by the joint committee for developing Chinese guidelines on prevention and treatment of dyslipidemia in adults.The patients were followed up for 24-72months (median 47 months) since operation.The difference of stone recurrence was compared between the 2 groups.Results Two hundred and eighteen patients with urinary stone disease were enrolled.Of them,52 patients were diagnosed with MS.Stone recurrence occurred in 29 patients (55.8％) of MS group,whereas 66 patients (39.8％) of non-MS group suffered stone recurrence.It demonstrated the median recurrence free survival of group MS and non-MS was 36 months and 59 months by Kaplan-Meier analysis,respectively (Log-rank test,P =0.019).Multivariate Cox regression analysis results revealed that MS was significantly associated with stone recurrence (HR 1.817,95％ CI 1.105-2.988,P =0.011),however,the gender (P =0.336),age (P =0.246) and recurrence urolithiasis at first visit (P =0.051) were not associated with stone recurrence.Conclusions MS is an independent risk factor for urinary stone recurrence.It is suggested that the treatment of MS may have a important role in prevention of stone recurrence in MS patients with urolithiasis.

Objective To study the reliability and validity of Chinese version of housebound scale in Chinese elderly people in community.Methods The housebound scale was amended and translated according to the Procedure of the European organization for Research and Treatment of Cancer (EORTC) Quality of Life Group.Include two scales,which is whether is housebound and the reason of housebound.The reliability and validity of Chinese version of housebound scale were tested in a sample of 860 Chinese elderly people in two communities among 127 communities in Tangshan from October 2012 to March 2013.Reliability was evaluated using the splithalf reliability and internal consistency.Validity was assessed by content validity,discriminate validity and construct validity.Results The Cronbach’s α coefficient of the first subscales was 0.743,the split-half reliability was 0.856,the convergent validity ratio was 0.960,and the scale had good discriminate validity (P ＜ 0.01).The Cronbach's αcoefficient of the second subscales was 0.853,the split-half reliability was 0.816,the convergent validity ratio was 0.910.Four factors body and mental factors,environmental factors,psychological and social factors,listening factors were extracted by a factor analysis,which explained 48.37％ of the total variance.The loading value of each items in their respective common factor ranged from 0.42 to 0.82.Conclusion The housebound scale has better reliability and validity,which is available for the evaluation of housebound amnong elderly people.

Objective To summarize surgical results of secondary tunnel-like subaortic stenosis( STSS) after congenital heart disease( CHD) operations, analyze the pathogenesis of STSS, evaluate the operative effect and prognosis.Methods We analyzed clinical data of 25 patients who underwent surgical repair for STSS in Fuwai Hospital from January 2009 to December 2015.There were 17 males and 8 females.CHD types included double outlet right ventricle, ventricular septal defect and par-tial atrioventricular septal defect, et al.The median age of the patients when they received their first CHD operations was 1 year (1 month to 42 years).The median age of the patients when they received TSS repair was 5 years and 8 months(2 years and 10 months to 48 years) .The surgical types contained modified Konno procedure , Konno procedure, resection of the conal sep-tum, resection of fibromuscular ridge and myectomy, removal and reconstruction of the intraventricular baffle.Results All the patients successfully received their TSS repair .There was no surgical death in this study .The preoperative gradient of aortic valve pressure was 81(43 to 159)mmHg(1 mmHg=0.133 kPa), and the postoperative gradient was 8.2(4.0 to 46.2) mm-Hg.Ⅲ degree atrioventricular block was occurred in 2 patients after operation and both 2 patients needed to set permanent pacemaker.All the patients were followed up after discharge for a median duration of 2 years( 4 months to 6 years) .During follow-up, none of the patients had any clinical symptom or subaortic restenosis , and there was no late death .Conclusion The pathogenesis of STSS is perhaps related to turbulent flow and shear stress to the left ventricular outflow tract , resulting in the proliferation of fibromuscular marterials and stenosis in the left ventricular outflow tract .The modified Konno procedure and resection of the conal septum are safe and effective.

Objective:To explore the feasibility and superiority of retropubic extraperitoneal laparosco-pic simple prostatectomy with prostatic urethra preservation to treat large volume benign prostatic hyperplasia(BPH).Methods:From January 2006 to August 2009,laparoscopic simple prostatectomy with prostatic urethra preservation was performed in 45 patients with symptomatic BPH,and the age of patients was 70.5?7.2(range 47 to 83) years old.The transrectal ultrasound(TRUS) revealed BPH and calculated prostatic gland weight was 126.1?52.4(range 62 to 365) g.There were 3 cases presented with bladder calculus and 1 case presented with bladder diverticulum.The technique included retropubic extraperitoneal space produced by balloon dilation,five trocars in a reverted U shape placed,transverse prostatic capsular incision made,subcapsular plane developed,prostatic adenoma removed while prostatic urethra preserved as well as prostatic capsule sutured.Demographic,perioperative and outcome data were recorded.Results:No patient required conversion to open surgery.The mean operative time was 123.9?51.3(range 37 to 270) minutes and the estimated blood loss was 230.6?194.5(range 50 to 800) mL.Blood transfusion was not necessary in this group of patients.Bladdder irrigation was not needed except for the initial 2 cases and the average Foley catheter duration was 7.5?3.5(range 2 to 14) days.Significant improvement was noted in the maximum flow rate,the International Prostate Score Symptoms(IPSS) and the quality of life questionnaires(QOL) three months after surgery.The erectile function was preserved in all patients who were potent before surgery and the ejaculation maintained antegrade.No urinary incontinence was reported by patients.Conclusion:Laparoscopic simple prostatectomy with prostatic urethra preservation for large benign prostatic hyperplasia is feasible and reproducible.Postoperative bladder irrigation can be avoided and antegrade ejaculation is preserved.The patients have a shorter hospital stay and early return to normal activity.

Objective To analyze the risk factors of laryngeal carcinoma.Methods The data of laryngeal carcinoma inpatients of our hospital from October 2005 to November 2007 were reviewed retrospectively by a case control analysis.Results The males who have smoking addiction,alcohol consumption,family history of malignant tumor and have more risks to suffer from laryngeal carcinoma.For The family history,OR is 2.01 in the single factor analysis,and in the multivariate analysis the OR is 2.27.Conclusion Gender,smoking,alcohol and family history of malignant tumor have great effect on the risk of laryngeal carcinoma.Family history of malignant tumor is an independent risk factor.