AIM: To investigate the efficiency of intravitreal ranibizumab therapy ( IVR ) for polypoidal choroidal vasculopathy ( PCV) in single or multiple polyps.
METHODS: A total 63 patients diagnosed with PCV in Shaoxing City People's Hospital from May 2013 to May 2015 were enrolled and divided into single polyp group and multiple polyps group. All patients received intravitreal ranibizumab 3 monthly and were followed up for 12mo. Observe the changes of best corrected visual acuity ( BCVA ) and central retinal thickness ( CRT ) at different time points.
RESULTS: The single polyps group exhibited a better BCVA, shorter greatest linear dimension, and lower prevalence of fibro - vascular pigment epithelial detachment compared with the multiple polyp group before treatment (P<0. 05). Significant difference of BCVA were observed at 3, 6 and 12mo between the two groups (P<0. 05). BCVA at 3, 6, 12mo was significantly better than that at baseline in single polyps group. The single polyp group exhibited a significantly thinner CRT at 6 and 12mo compared with multiple polyps group (P<0. 05). The single polyp group showed improvement in CRT over the followed up period(P<0. 05). The CRT in multiple polyps group at 3 and 6mo significantly decreased compared with preoperative (P<0. 05).
CONCLUSION: IVR meet better result in PCV patients with multiple polyp and polyp numbers may be valuable to prognosis.

AlM:To compare the efficacy and safety of latanoprost and brimonidine in the treatment of open angle glaucoma, and provide reference for rational drug use.METHODS:A total of 121 cases ( 136 eyes ) who were diagnosed as primary open angle glaucoma were selected in this study, and they were randomly divided into experimental group (62 cases, 70 eyes) and control group ( 59 cases, 66 eyes) according to different drug treatment. Patients in the control group received brimonidine eye drops twice a day, while patients in the experimental group received latanoprost eye drops once a day. The intraocular pressure, visual acuity and adverse reactions were checked of the two groups in the following 3mo.RESULTS:The intraocular pressure of patients in the control group was 18. 1 ± 1. 3mmHg, while the experimental group was 17. 0 ± 0. 9mmHg after 12wk of treatment, which were both lower than before (P<0. 05). The fluctuation of intraocular pressure in the experimental group was significantly lower than that of the control group. There was no significant difference in the LogMAR visual acuity between before and after treatment in the control group, while the LogMAR visual acuity of the experimental group was significantly improved. The control group had hyperemia, burning sensation, tearing, eyelid edema and other adverse side effects, and the experimental group had little adverse reactions. CONCLUSlON: Latanoprost can significantly reduce intraocular pressure in glaucoma patients with in the follow- up time, and reduce the impact of elevated intraocular pressure in the vision of glaucoma patients, with little adverse reaction, worthy of clinical application.

OBJECTIVESTo investigate a new targeting mechanical arm for CT-based navigated percutaneous fixation of pelvic fractures, and to evaluate the safety and efficiency of the procedures.

METHODSUsing CT-based 3D navigation software combined with targeting mechanical arm, percutaneous insertion of pelvic models (3 dry human cadaver pelvic skeletons and 5 plastic Sybone pelvic models) were performed, 8 pelvic models allowed percutaneous cannulated screw insertion of both S-I joint (2 S-I screws placement for each side, total 32 screws in this experiment) and both superior ramus (1 ramus medullary screw placement for each side, total 16 screws in this experiment). Percutaneous insertion of pelvic models (4 dry human cadaver pelvic skeletons and 4 plastic Sybone pelvic models, 1 S-I screws and 1 ramus medullary scre placement for each side, 32 screws in this experiment) were performed using fluoro-navigation system (Stryker, USA). Time necessary for every screw insertion were recorded. Accuracy of screw placement was assessed using C-arm imaging and direct eyes inspecting. The time and accuracy of the two methods were compared.

RESULTSThe time required for the CT-based 3D navigation procedure (3.6 ± 1.2) min was significantly less than using the targeting mechanical arm compared to drilling freehand with navigation (9.1 ± 0.8) min (t = 2.50, P < 0.01). There was no significant difference in accuracy between the two methods.

CONCLUSIONCT-based 3D navigation software combined with targeting mechanical arm should be potential to apply percutaneous sacroiliac screwing for pelvic fractures with more accurate and more reliable.

Bone Screws ; Cadaver ; Fracture Fixation, Internal ; methods ; Humans ; Models, Anatomic ; Pelvic Bones ; surgery ; Software ; Surgery, Computer-Assisted ; methods

OBJECTIVESTo investigate the characteristics of antibiotic poly (D, L-lactide) (PDLLA) coating of implants, including its quantity, mechanical stability, sterility and antibiotic release in vitro.

METHODSThe weight of the total coating mass was determined with an electronic semimicro balance before and after coating. Thickness of the coating was documented by scanning electronic microscopy. The stability and the loss of coating mass after implantation and extraction into the intramedullary canal was measured by electronic semimicro balance and the regularity and possible damage of the coating was examined by scanning electronic microscopy. Sterility of the coating procedure was tested by bacteria incubation. A group of coated implants were incubated in PBS to test the coating decrease and the release of gentamicin at different time points.

RESULTSThe quantification of the total coating mass was (7.2 +/- 0.9) mg and the thickness of coating was (13.5 +/- 1.7) microm. After explantation of the coated implants from the tibia medullary, the mean loss of coating mass was (3.5 +/- 1.3)%. Scanning electronic microscopy confirmed no defects of the coating layer extending to the metallic surface in any implant. None of the tested samples presented bacterial growth after incubation on blood agar and tryptic soy broth. The PDLLA depicted a weight reduction of about 6.4% after 6 weeks. Within the first 4 h, the release of gentamicin experienced an initial peak period, then a constant and gradual release was found for at least 6 weeks.

CONCLUSIONSThe antibiotic PDLLA coating on implants can meet the demands of the mechanical stability and sterility, and gentamicin releases quickly in the first hour and the release can last at least 6 weeks. These characteristics undoubtedly justify the feasibility of the coating usage in clinics.

Absorbable Implants ; Anti-Bacterial Agents ; Coated Materials, Biocompatible ; Drug Carriers ; Gentamicins ; In Vitro Techniques ; Internal Fixators ; Materials Testing ; Polyesters

OBJECTIVETo report and evaluate the results of subtalar distraction bone block fusion in the treatment of malunited calcaneus fracture.

METHODSFrom September 2004 to January 2008, 32 cases of malunited calcaneus fracture were treated, among which 28 cases were classified type II and 4 cases type III by Stephens-Sander's classification. Preoperative X-ray and CT examination demonstrated a talocalcaneal angle of 18.1 degrees ± 2.3 degrees , and an AOFAS score of 36.3 ± 4.1. Subtalar distraction bone block fusion was performed in all cases in this series. Regular follow-up was done with talocalcaneal angle measurement and AOFAS scoring.

RESULTSAll the 32 patients had been followed-up of 34 months, ranging from 24 to 65 months, only to reveal a primary wound healing without infection in all but one, in which superficial skin necrosis occurred postoperatively and healed after dressing-changes. Bone healing at the fusion site was seen 3 months after operation in all cases. At the final follow-up, the talocalcaneal angle was 22.9° ± 1.9° and the AOFAS score 77.5 ± 4.1, both demonstrating a significant difference (P < 0.05), when compared with those before operation.

CONCLUSIONSubtalar distraction bone block fusion, together with the lateral wall decompression, can correct the main deformity and reduce major symptoms induced by the malunion of calcaneus fractures, being a convenient and practical option for the treatment of malunited calcaneus fracture.

Adult ; Arthrodesis ; methods ; Bone Transplantation ; Female ; Follow-Up Studies ; Fracture Healing ; Fractures, Malunited ; surgery ; Humans ; Male ; Subtalar Joint ; surgery ; Treatment Outcome

OBJECTIVETo study the effects of different dietary fatty acid on the expression of nuclear receptor genes in the breast cancer of rats.

METHODSFifty-day-old female Sprague-Dawley rats were fed on eight different diets containing following fatty acids: saturated fatty acid (SFA); monounsaturated fatty acid (MUFA); n-6 polyunsaturated fatty acid (PUFA); n-3 PUFA; 1:1 n-6/n-3; 5:1 n-6/n-3; 10:1 n-6/n-3; 1:2:1 S/M/P (n-6/n-3 at 1:1). The rats were given a single intraperitoneal injection of methyl-nitrosourea (MNU) at 50 mg/kg body weight to establish the rat model of mammary carcinogenesis, the ultrastructure changes of mammary gland cells in rats were observed by transmission electron microscope, the cell proliferation activity was detected by BrdU-labeled immunocytochemistry, and the expression of PPARbeta and PPARgamma mRNA were assayed by RT-PCR.

RESULTSThere was no breast cancer occurring in control groups and the MNU-treated n-3 PUFA group, and the ultrastructure and proliferation activity of mammary gland cells in these groups were normal. In contrast, there appeared obvious marker of adenocarcinomas in mammary gland cells of MNU-induced breast cancer, and a high cell proliferation activity was found in tumor growth-enhancing groups (SFA, MUFA, n-6 PUFA, 5:1 n-6/n-3, 10:1 n-6/n-3 and S/M/P, 21% - 22% of BrdU-labeled cells), while a low cell proliferation activity was detected in rats fed with 1:1 n-6/n-3 diet (13% of BrdU-labeled cells, P < 0.05). Moreover, peroxisome proliferator-activated receptors (PPARs), as important nuclear receptor genes of relating lipid metabolism, the expressions of PPARbeta and PPARgamma mRNA were significantly up-regulated in mammary adipose tissues of MNU-induced breast cancer as compared with the control groups, but the expression levels of peroxisome proliferator-activated receptors (PPARs) in rats fed with 1:1 n-6/n-3 group were lowest (P < 0.05).

CONCLUSIONThe different dietary fatty acid compositions should diversely adjust the expression of PPARs gene in rats, which maybe have an important role in affecting incidence of breast cancer.

Animals ; Fatty Acids ; pharmacology ; Fatty Acids, Omega-3 ; pharmacology ; Fatty Acids, Omega-6 ; pharmacology ; Fatty Acids, Unsaturated ; pharmacology ; Female ; Gene Expression ; Gene Expression Regulation, Neoplastic ; Mammary Neoplasms, Experimental ; genetics ; PPAR gamma ; genetics ; RNA, Messenger ; genetics ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo evaluate the correlations between MELD score and left ventricular function in patients with end-stage liver disease.

METHODSA total of 92 patients who prepared for orthotopic liver transplantation from January 2002 to May 2008 were enrolled in this study. Of these Patients, 75 were males and 17 were females, and the mean age was 50.3+/-9.5 years; 85 were cirrhosis, 7 were cirrhosis with primary liver cancer. Preoperative information, including biochemical parameters, coagulation parameters, indicators of hepatitis virology, two-dimensional echocardiography and electrocardiogram were collected. According to MELD (the Model for End-stage Liver Disease) scoring system, these subjects were categorized into three groups: MELD score is less than or equal to 9 points (31 cases, 33.7%); 10 is less than or equal to MELD score is less than or equal to 19 points (45 cases, 48.9%); MELD score is more than or equal to 20 points (16 cases, 17.4%). The relationships between MELD score and classification and cardiac function were determined by chi-square test, analysis of variance, rank sum test and correlation analysis, et al.

RESULTSMELD score was significantly correlated with left atrial diameter (LAD), interventricular septum thickness (IVST), left ventricular end-diastolic diameter (LVEDD), aortic flow (AF), cardiac output (CO), QRS interval (QRSI) and corrected QT interval (QTc) (r = 0.317, 0.341, 0.228, 0.387, 0.325, 0.209 and 0.347, respectively; P value less than 0.01, respectively); except QRSI, these variables and left ventricular posterior wall thickness (LVPWT) were also correlated with INR (a MELD component) (r = 0.282, 0.319, 0.322, 0.435, 0.275, 0.320 and 0.237, respectively; P value less than 0.01, respectively); LAD, LVEDD, AF, CO and QTc were correlated with serum total bilirubin (r = 0.241, 0.219, 0.357, 0.246 and 0.253, respectively; P value less than 0.05, respectively); IVST and E/A ratio (A blood flow [from left atrium to left ventricular] velocity ratio between early diastole [E wave] and late diastole[A wave] ) were correlated with serum creatinine (r = 0.216 and -0.343; P value less than 0.05 and 0.01); the proportion of E/A is less than or equal to 1 in all subjects was 46.7% (43/92), and 48.4% (15/31), 35.6% (16/45) and 75.0% (12/16) in each group, besides, there was statistically significant difference between 10 is less than or equal to MELD score is less than or equal to 19 points group and MELD score is more than or equal to 20 points group (X2 = 7.359, P = 0.009).

CONCLUSIONSThere are different degrees of left ventricular structure, function and electrophysiological changes in patients with end-stage liver disease, these anomalies also will be increased with the MELD score increasing.

Adult ; End Stage Liver Disease ; physiopathology ; surgery ; Female ; Humans ; Liver Cirrhosis ; physiopathology ; surgery ; Liver Failure ; physiopathology ; surgery ; Liver Neoplasms ; physiopathology ; surgery ; Liver Transplantation ; Male ; Middle Aged ; Ventricular Function, Left

OBJECTIVETo study the segregation of two novel RHD alleles in Chinese pedigrees.

METHODSThe Rh antigens of the samples were identified by using monoclonal antibodies. The 10 exons of the RHD gene for the 2 probands and their family members were amplified separately and sequenced. The parents of proband 2 were analyzed by sequence specific primer-polymerase chain reaction (SSP-PCR).

RESULTSThe two probands were RhD negative and the RHD was D/d type. After alignment with the nucleotide sequence in GenBank, a deletion of nucleotide C at position 78 in exon 1 of proband 1 was detected, and her sister also had the deletion, which was confirmed by sequencing. The sequencing results of proband 2 showed a 10 nucleotide deletion in exon 8 as well as a RHD 520 G to A mutation in exon 4. The results of SSP-PCR and sequencing showed that the proband's mother also carried RHD 520 G to A and RHD 1080 del 10 mutation, which was transmitted to proband 2. The sequences of the novel alleles have been submitted to GenBank (accession No. GQ477180 and GU362076).

CONCLUSIONThe two novel RHD alleles, RHD 78delC and RHD 520 G to A+1080 del 10, were both pseudo genes and stably transmitted.

Adult ; Alleles ; Base Sequence ; Exons ; Female ; Genotype ; Humans ; Male ; Pedigree ; Rh-Hr Blood-Group System ; genetics ; Young Adult

We explore the association of the mycoplasma infection with genital system tumor.Some index word including prostate cancer,cervical cancer,ovarian cancer and mycoplasma were used in some electronic databases (including PubMed,Web of Science,Chinese biomedical database,wanfang database,CNKI) to search literatures.The R software was used for the meta-analysis.The Newcastle-Ottawa Scale (NOS) was used to evaluate the quality of the literature.Publication bias was evaluated by funnel figure,and the fail-safe number (Nfs) was calculated to estimate the reliability of the meta-analysis.Result showed that 20 articles were included,the numbers of cases and controls were 2 345 and 2 728 respectively.The pooled OR of Ureaplasma urealyticum(Uu),Mycoplasma hominis(Mh),other mycoplasma,mixture of mycoplasma and the whole mycoplasma was 2.19(95％CI:1.27-3.79),1.74(95％CI:1.28-2.35),1.97(95％CI:1.03-3.77),3.54 (95％CI:1.33-9.41),1.29(95％CI:1.53-2.60),respectively.The fail-safe number of Uu,Mh,other mycoplasma and mixture of mycoplasma was 254,42,31,157 respectively.There are some possibility about the association between the mycoplasma infection and the genital system cancer;maybe the infection would increase the tumorigenesis risk.It is necessary to research further about these associations in different mycoplasmas respectively.

Objective To study the effects of Twist gene silencing on migration and invasion of human triple-nega-tive breast cancer cell Hs578T and its potential mechanisms. Methods The lentiviral vectors with Twist gene-targe-ted specific shRNA and the negative control were constructed,then transfected into the human triple-negative breast cancer cell line Hs578T to establish the stable cell lines of Twist gene silencing. The blank group(blank),negative control group(shNC) and Twist gene silencing group(shTwist) were set up.After screening by puromycin,the fluo-rescence expression and the infection efficiency of each group cells were observed by inverted fluorescence micro-scope. The expression of Twist mRNA and protein level was detected by quantitative real-time PCR and Western blot.Transwell migration and invasion experiments were performed to measure cell migration and invasion abilities, re-spectively. Western blot was used to detect the levels of p-AKT, AKT, p-ERK1/2 and ERK1/2 proteins. Results Twist gene was successfully knockdown in human triple-negative breast cancer cell line Hs578T. Compared with the blank group and shNC group cells,the cell migration and invasion ability of the shTwist group cells were decreased significantly(P<0.05,P<0.05),and the expression of Twist downstream p-AKT and p-ERK1/2 proteins were al-so reduced notably in the shTwist group cells(P<0.05,P<0.05). Conclusions Twist promotes cell migration and invasion via AKT/ERK signaling axis in human triple-negative breast cancer cell line Hs578T.