Association of sexually transmitted infection with semen quality in men from couples with primary and secondary infertility / 亚洲男科学杂志(英文版)

This study aims to compare the prevalence of sexually transmitted infections (STIs) with semen quality in men from couples with primary and secondary infertility. Semen samples were collected from 133 men who requested fertility evaluation. Seminal tract infection with Ureaplasma spp. (UU), Mycoplasma hominis (MH), Mycoplasma genitalium (MG), Chlamydia trachomatis (CT), Neisseria gonorrhoeae (NG), and herpes simplex virus-2 (HSV-2) was assessed by PCR-based diagnostic assays. Among all patients, the prevalence of STIs was higher in men from couples with primary infertility than that in men from couples with secondary infertility (39.7% vs 21.7%, P = 0.03). The prevalence of UU was 28.8% and 13.3% in men from couples with primary and secondary infertility, respectively. Men from couples with primary infertility were more likely to be positive for UU than men from couples with secondary infertility (P = 0.04). Regarding the UU subtype, the prevalence of Ureaplasma urealyticum (Uuu) and Ureaplasma parvum (Uup; including Uup1, Uup3, Uup6, and Uup14) did not differ between the two groups. No associations between the prevalence rates of MH, MG, and CT were found in men from either infertility group. A lower sperm concentration was associated with STI pathogen positivity in men with primary infertility according to the crude model (P = 0.04). The crude and adjusted models showed that semen volume (both P = 0.03) and semen leukocyte count (both P = 0.02) were independently associated with secondary infertility. These findings suggest the importance of classifying the type of infertility during routine diagnosis of seminal tract infections.

Admission delay is associated with worse surgical outcomes for elderly hip fracture patients: A retrospective observational study / 世界急诊医学杂志（英文）

BACKGROUND@#The influence of surgical delay on mortality and morbidity has been studied extensively among elderly hip fracture patients. However, most studies only focus on the timing of surgery when patients have already been hospitalized, without considering pre-admission waiting time. Therefore, the present study aims to explore the influence of admission delay on surgical outcomes.@*METHODS@#In this retrospective study, we recorded admission timing and interval from admission to surgery for included patient. Other covariates were also collected to control confounding. The primary outcome was 1-year mortality. The secondary outcomes were 1-month mortality, 3-month mortality, ICU admission and postoperative pneumonia. We mainly used multivariate logistic regression to determine the effect of admission timing on postoperative outcomes. An additional survival analysis was also performed to assess the impact of admission delay on survival status in the first year after operation.@*RESULTS@#The proportion of patients hospitalized on day 0, day 1, day 2 after injury was 25.4%, 54.7% and 66.3%, respectively. And 12.6% patients visited hospital one week later after injury. Mean time from admission to surgery was 5.2 days (standard deviation 2.8 days). Hospitalization at one week after injury was a risk factor for 1-year mortality (OR 1.762, 95% CI 1.026–3.379, P=0.041).@*CONCLUSION@#Admission delay of more than one week is significantly associated with higher 1-year mortality. As a supplement to the current guidelines which emphasizes early surgery after admission, we also advocate early admission once patients get injured.

Effects of perioperative transcutaneous electrical acupoint stimulation on postoperative analgesia in patients undergoing shoulder arthroscopic surgery / 中国针灸

OBJECTIVE@#To observe and evaluate the effects of transcutaneous electrical acupoint stimulation (TEAS) at different time points on postoperative analgesia in perioperative period in patients undergoing shoulder arthroscopic surgery, and to explore the optimal time to use TEAS for shoulder arthroscopic surgery.@*METHODS@#A total of 120 patients undergoing unilateral shoulder arthroscopy under general anesthesia, graded withⅠtoⅡaccording to ASA criteria were randomly divided into 3 groups, 40 patients in each one. The patients in the group A were treated with preoperative TEAS at sham acupoints combined with postoperative TEAS at Hegu (LI 4) and Neiguan (PC 6); the patients in the group B were treated with preoperative TEAS at Hegu (LI 4) and Neiguan (PC 6) combined with postoperative TEAS at sham acupoints; the patients in the group C were treated with TEAS at sham acupoints before and after operation. The parameters of TEAS were dilatational wave, 2 Hz/100 Hz in frequency, 30 min. When the resting-state visual analogue scale (VAS) of incision was more than 3 points, the patient-controlled intravenous analgesia (PCIA) pump of sufentanil was administered to maintain the VAS no more than 3 points. The time point when PCIA pump was firstly used, the used dose of sufentanil and effective pressing number of PCIA pump within 24 hours after surgery were recorded. Intraoperative anesthetic doses were recorded in the three groups. The resting-state and task-state VAS were evaluated at 0, 6, 12, 24 hours after surgery; the patient's satisfaction rate and adverse effects were recorded.@*RESULTS@#The time when PCIA pump was firstly used in the group A and the group B was significantly longer than that in the group C, and the used dose of sufentanil and effective pressing number of PCIA pump within 24 hours after surgery in the group A and group B were significantly less than those in the group C (all 0.05). There were no statistically significant difference in VAS score at different postoperative time points and postoperative analgesia satisfaction rate between the two groups (all >0.05).@*CONCLUSION@#Perioperative TEAS could improve the postoperative analgesia in patients undergoing arthroscopic shoulder surgery, delay the time when PCIA pump is firstly used, reduce the dosage of postoperative analgesics and adverse events. Compared before surgery, postoperative TEAS has better analgesia.

Application of sevoflurane and laryngeal mask in cesarean section in women with heart disease / 南方医科大学学报

<p><b>OBJECTIVE</b>To compare the safety of sevoflurane anesthesia with laryngeal mask and tracheal intubation in cesarean section in women with heart disease.</p><p><b>METHODS</b>Fifty-two pregnant women with heart diseases undergoing cesarean section were randomized into laryngeal mask (LAM) group and tracheal intubation group. In LAM group, 6% sevoflurane was given at the rate of 6 L/min for induction with a maintenance sevoflurane concentration of 3%. In the intubation group, 1.5 mg/kg propofol and 1 µg/kg remifentanil were injected intravenously, and after achieving D0 with Narcotrend monitoring, 0.9 mg/kg rocuronium was injected and intubation was performed 1 min later. The systolic blood pressure (SBP), diastolic blood pressure (DBP), mean arterial pressure (MAP), and heart rate (HR) were recorded in the two groups before anesthesia induction (T), at intubation or laryngeal mask placement (T), skin incision (T), and extubation or laryngeal mask removal (T). The surgery to fetal birth time, uterine incision to fetal childbirth time, drug discontinuation to awake time, and newborn Apgar scores were also recorded. Sevoflurane consumption and maternal comfort during hospitalization were compared between the two groups.</p><p><b>RESULTS</b>In LAM group, HR and MBP at Tand Twere significantly lower than those in the intubation group (P<0.05). The drug discontinuation to extubation time and to awaken time were significantly shorter in LAM group than in the intubation group (P<0.05), but the operation time and fetal child birth time were comparable between the two groups (P>0.05). The women in LAM group reported better physical and psychological comforts than those in the intubation group (P<0.05). The neonatal Apgar scores and the scores of health education, satisfaction with hospital environment and service were all similar between the two groups (P>0.05).</p><p><b>CONCLUSION</b>Sevoflurane anesthesia with laryngeal mask can achieve satisfactory anesthetic effects in cesarean section in women with heart disease.</p>

Expression of FOXM1 in patients with esophageal squamous carcinoma and its clinical significance / 临床与实验病理学杂志

Purpose Analysis of correlation between FOXM1 gene expression levels and clinicopathological features and prognosis of patients with esophageal squamous cancer (ESC). The effect of down-regulation of FOXM1 expression on the proliferation of human ESC cell line KYSE-30 was also inves-tigated. Methods Quantitative real-time PCR (qRT-PCR) and immunohistochemistry ( IHC) methods were used to detect the expression of FOXM1 in ESC tissues and non-cancer tissues in mRNA and protein level. The expression of FOXM1 was down-regulated by RNA interference (RNAi) technique, and the pro-liferation activity of KYSE-30 cells was detected by CCK-8 as-say. Results Compared with the corresponding non-cancer tis-sues, the expression of FOXM1 was significant higher in ESC tis-sues(P＜0. 01). Meanwhile, the expression levels of FOXM1 in poorly differentiated esophageal carcinoma was higher than that in well-differentiated ESC group ( P ＜0. 01 ). The expression of FOXM1 was significantly correlated with poor tumor differentia-tion (P＜0. 001), lymphatic metastasis (P=0. 000), advanced stage (P=0. 004) of ESC patients after surgical resection. High FOXM1 expression was related to shorter overall survival ( OS) (P＜0. 001). After down-regulating FOXM1 expression in KYSE-30 cells, cell proliferation rate was inhibited (P＜0. 01). Conclusion FOXM1 expression is up-regulated in ESC and is closely related to the degree of differentiation, lymph node me-tastasis, clinical stage and prognosis of ESC. FOXM1 may be participated in regulating the proliferation of human esophageal carcinoma cell line KYSE-30.

Carotid artery stent angioplasty for treatment of internal carotid artery stenosis in the elderly: analysis on its efficacy and related factors of safety / 上海预防医学

Objective To study the efficacy and safety of carotid artery stenting(CAS) in elderly patients with internal carotid artery stenosis and its related factors.Methods Between January 2012 and July 2014,a total of 152 patients(over 65 years of age)with carotid artery stenosis were enrolled in this study,of whom 79 patients received drug treatment (control group) and 73 patients received CAS (intervention group).The two groups were followed up for one year.The patients'' scores of mRS(the modified Rankin Scale) and NIHSS(the National Institute of Health Stroke Scale) were observed and compared in the curative effect between the two groups.By means of logistic regression were analyzed the related safety factors in CAS treatment for elderly patients over 65 with extracranial stenosis of internal carotid artery.Results Both the median mRS (P<0.01) and NIHSS(P<0.05) scores were lower in intervention group than those in control group at 3,6 and 12 months follow-up,respectively.Thirty days after CAS,there occurred transient ischemic attack (TIA) in intervention group,whose incidence was significantly lower than that in control group (P<0.05).However,there was no statistical significant difference found between the two groups in the incidence of serious adverse events including TIA,cerebral hemorrhage,cerebral infarction and death(P>0.05)at one year follow-up.And logistic regression analysis showed that the previous history of cerebral infarction,residual stenosis or combined un-interferential cerebral arterial stenosis were all independent predictors of serious adverse events including TIA,cerebral infarction,cerebral hemorrhage,re-stenosis and death (P<0.05).Conclusion CAS is a safe and effective procedure for old patients with internal carotid artery stenosis.A history of cerebral infarction,combined un-interferential cerebral arterial stenosis or residual stenosis after CAS were all risk factors,which need to be effectively controlled before CAS.

Risk factors for perioperative acute kidney injury in adult cardiac valve surgery with cardiopulmonary bypass / 临床麻醉学杂志

Objective To investigate the risk factors of acute kidney injury (AKI) in patients undergoing cardiac valve surgery with cardiopulmonary bypass (CPB).Methods A retrospective cohort database study was conducted, involving 1 349 patients undergoing heart valve surgery with CPB technique.Logistic regression was used to screen out the risk factors of AKI after the surgery.Results Of the 1 349 patients, the incidence of AKI in valve surgery was 28.4%.One year older (OR=1.05, 95%CI 1.03-1.06, P<0.001), diabetes (OR=2.11, 95%CI 1.22-3.68, P=0.008), anemia (OR=1.50, 95%CI 1.05-2.21, P=0.026), each additional basic serum creatinine of 1 mg/dl (OR=1.01, 95%CI 1.01-1.02, P=0.001), each additional operation time of 1 hour (OR=1.28, 95%CI 1.15-1.41, P<0.001), plasma transfusion during surgery (OR=1.50, 95%CI 1.14-1.97, P=0.004) were the independent risk factors for AKI in multivariate logistic regression model.Conclusion AKI is a common and serious complication following cardiac valve surgery.More attention should be paid to the patients with elder age, anemia, prolonged operation time, diabetes, increased basic serum creatinine and requirement of plasma transfusion during surgery.

Anesthetic effect and safety of ultrasound-guided thoracic paravertebral blockade in sympathectomy for palmar hyperhidrosis: a randomized controlled trial / 南方医科大学学报

<p><b>OBJECTIVE</b>To explore the anesthetic effect and safety of ultrasound-guided thoracic paravertebral blockade in video-assisted thoracoscopic sympathectomy for treatment of palmar hyperhidrosis.</p><p><b>METHODS</b>A total of 120 patients undergoing video-assisted thoracoscopic sympathectomy for moderate or severe hyperhidrosis were randomized to receive ultrasound-guided thoracic paravertebral blockade (group A, n=60) or general anesthesia with tracheal intubation (group B, n=60). In both groups routine monitoring and radial artery catheterization were used. The patients in group A were given oxygen inhalation via a nasal tube after thoracic paravertebral blockade, and those in group B had intratracheal intubation. Blood gas analyses were conducted 5 min before and 5 min after the operation and the clinical outcomes and complications were recorded in each group.</p><p><b>RESULTS</b>All the patients completed the operations safely and none of the patients with thoracic paravertebral blockade required conversion to general anesthesia. Significant differences were recorded between groups A and B in anesthetic preparation time (6.26∓2.09 vs 46.32∓15.76 min), awakening time (6.26∓2.09 vs 46.32∓15.76 min), and mean hospitalization expense (6355.54∓426.00 vs 8932.25∓725.98 RMB Yuan). Compared with those in group B, the patients in group A showed a significantly lower rate of postoperative throat discomfort (0% vs 100%), a shorter monitoring time (2 h vs 12 h), and faster recovery time for food intake (2 h vs 6 h). The parameters of artery blood gas analysis both before and after the operation were similar between the two groups, but the postoperative variations differed significantly between the two groups in pH value and PaCObut not in PaO.</p><p><b>CONCLUSION</b>Ultrasound-guided thoracic paravertebral blockade is safe and effective in video-assisted thoracoscopic sympathectomy for palmar hyperhidrosis and is associated with less complications and better postoperative recovery.</p>

Effects of ischemic time factors on reduction of myocardial ischemia-reperfusion injury by sulfentanil postconditioning in rats / 中华麻醉学杂志

Objective To evaluate the effects of ischemic time factors on reduction of myocardial ischemia-reperfusion injury by sulfentanil postconditioning in rats .Methods Healthy adult male Sprague-Dawley rats ,weighing 230-250 g ,were heparinized and anesthetized with intraperitoneal 5% chloral hydrate 8 ml/kg .The hearts were excised and perfused in a Langendorff apparatus with K-H solution .After 30 min of stabilization ,48 isolated rat hearts were randomly assigned into 6 groups (n=8 each) using a random number table .In I/R1-3 groups ,the hearts were subjected to 30 ,45 ,and 60 min of myocardial ischemia ,respectively ,followed by 90 min of reperfusion . In SP1-3 groups , the hearts were subjected to 30 , 45 , and 60 min of myocardial ischemia , respectively ,followed by 90 min of reperfusion ,and sulfentanil 100 nmol/L was added to K-H solution at 15 min of reperfusion for postconditioning . Left ventricular end-diastolic pressure (LVEDP ) , left ventricular developed pressure (LVDP) ,+dp/dtmax ,-dp/dtmax ,HR and coronary flow (CF) were measured at the end of equilibration and 15 ,30 ,60 and 90 min of reperfusion .Creatine kinase (CK) and lactate dehydrogenase (LDH) activities in coronary effluent were measured at 5 min of reperfusion .Myocardial infarct size was determined in 5 hearts chosen randomly at 90 min of reperfusion .Results LVEDP was significantly higher ,and LVDP , ± dp/dtmax and CF were lower at each time point of reperfusion than at the end of equilibration in I/R1-3 groups ( P0.05 ) .Conclusion Sulfentanil postconditioning can attenuate myocardial ischemia-reperfusion injury when the rats are subjected to 30 or 45 min of ischemia ,however ,it provides no myocardial protection when the rats are subjected to 60 min of ischemia .

Clinicopathological characterization of true hermaphroditism complicated with seminoma and review of the literature / 中华男科学杂志

<p><b>OBJECTIVE</b>To study the clinicopathological characteristics and diagnosis of true hermaphroditism complicated with seminoma.</p><p><b>METHODS</b>We retrospectively analyzed the clinicopathological data of a case of true hermaphroditism complicated with seminoma and reviewed the related literature.</p><p><b>RESULTS</b>The patient was a 42-year-old male, admitted for bilateral lower back pain and discomfort. CT showed a huge mass in the lower middle abdomen. Gross pathological examination revealed a mass of uterine tissue, 7 cm x 2 cm x 6 cm in size, with bilateral oviducts and ovarian tissue. There was a cryptorchidism (4.0 cm x 2.5 cm x 1.5 cm) on the left and a huge tumor (22 cm x9 cm x6 cm) on the right of the uterine tissue. The tumor was completely encapsulated, with some testicular tissue. Microscopically, the tumor tissue was arranged in nests or sheets divided and surrounded by fibrous tissue. The tumor cells were large, with abundant and transparent cytoplasm, deeply stained nuclei, coarse granular chromatins, visible mitosis, and infiltration of a small number of lymphocytes in the stroma. The karyotype was 46, XX. Immunohistochemistry showed that PLAP and CD117 were positive, while the AFP, Vimentin, EMA, S100, CK-LMW, Desmin, CD34 and CD30 were negative, and Ki-67 was 20% positive. A small amount of residual normal testicular tissue was seen in the tumor tissue.</p><p><b>CONCLUSION</b>True hermaphroditism complicated with seminoma is rare. Histopathological analysis combined with immunohistochemical detection is of great value for its diagnosis and differential diagnosis.</p>

Pathogenic and tumorigenic effect of 1,2-dimethylhydrazine in mouse colon and ovarian / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the pathogenic and tumorigenic effect of 1,2-dimethylhydrazine (DMH) on the colon and ovaries of mice.</p><p><b>METHODS</b>Sixty ICR female mice were randomly divided into groups A and B for intraperitoneal injection of DMH (20 mg/kg) and saline (control) once a week for 24 weeks, respectively. The mice were sacrificed at 12, 16, 20, 24, 28 and 32 weeks after the first DMH injection for pathological examination of the colon and ovaries.</p><p><b>RESULTS</b>In group A, colorectal adenomas were found in 7, colorectal adenocarcinomas in 5, and hemorrhagic lesions of the ovaries with chronic inflammatory in 21 mice. Choriocarcinoma in the ovaries were detected in one mouse at 28 weeks and in another at 32 weeks. No obvious pathological changes were found in group B following the injections.</p><p><b>CONCLUSION</b>Intraperitoneal injection of DMH may induce colon tumors and ovarian diseases in mice.</p>

Effects of 17β-estradiol on proliferation and migration of MCF-7 cell by regulating expression of claudin-6 / 中华病理学杂志

<p><b>OBJECTIVE</b>To explore the role of estrogen in the regulation of the expression of claudin-6 and biological behavior in MCF-7 cells.</p><p><b>METHODS</b>RT-PCR and immunocytochemistry were conducted to analyze the expression and localization of claudin-6 in MCF-7 cells treated with 17β-estradiol. CCK-8 kit assay and Scratch Test were conducted to analyze the capability of proliferation and migration of 17β-estradiol treated MCF-7 cells.</p><p><b>RESULTS</b>RT-PCR analysis and immunocytochemistry showed that 17β-estradiol induced a concentration-and time-dependent effect on claudin-6. At 5 nmol/L and at 24 h, 17β-estradiol treatment led to an increased level of claudin-6, which was located in the membrane of MCF-7 cells. CCK-8 analysis showed a significant decrease in the capability of proliferation of MCF-7 cells compared with the control group (P < 0.05). Cells Scratch Test showed decreased migration capability of MCF-7 cells compared with the control group (P > 0.05).</p><p><b>CONCLUSIONS</b>17β-E2 might regulate the expression of claudin-6 and inhibit the proliferation and migration of MCF-7 cells. The inhibitory effects of 17β-E2 on growth and migration of MCF-7 cells may be mediated by claudin-6 expression regulation.</p>

Relationship between Tiam-1 expression and the biological behaviors of nasopharyngeal carcinoma / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the relationship between the protein expression of T-lymphoma invasion and metastasis gene 1 (Tiam-1) and the biological behaviors of nasopharyngeal carcinoma (NPC).</p><p><b>METHODS</b>Immunohistochemistry was performed to detect the expressions of Tiam-1 protein in 60 specimens of NPC tissue, 20 specimens of chronic nasopharyngitis (CN) tissue, and 6 tumor tissues from nude mice inoculated with metastatic human NPC cells.</p><p><b>RESULTS</b>The positivity rate and average score for Tiam-1 expression were significantly higher in NPC tissues than in CN tissue (63.33% vs 36.67%, 2.9167 +/- 1.3057 vs 0.7000 +/- 0.9234; chi(2)=20.429, P=0.001; t=7.0162, P=0.0000, respectively). No difference was found in Tiam-1 expression among NPC patients in different T stages (F=2.36, P=0.0811), while the expression differed significantly between the patients with lymph node metastasis and those without metastasis, and also between patients with organ metastasis and those without (P=0.0001). High Tiam-1 expressions were found in the tumor tissues in nude mice inoculated with metastatic NPC cells.</p><p><b>CONCLUSION</b>Tiam-1 expression is closely associated with the invasiveness and metastasis of NPC, indicating that Tiam-1 is an important factor that promotes the invasion and metastasis of NPC.</p>

Effects of silent nucleostemin gene expression on apoptosis of HL-60 cells in vitro / 中国实验血液学杂志

This study was aimed to explore whether the apoptosis of leukemia cells can be induced by targeting silencing nucleostemin gene in vitro. HL-60 cells were taken as the model, and were directly transfected with nucleostemin short hairpin RNA (NS-shRNA). Sequences unrelated with NS gene were taken as control. The blocking effect of NS-shRNA was detected by RT-PCR, the morphology changes in living cells were observed under inverted microscope, and the changes of cell shape and nucleus were detected by Wright-Giemsa staining. The amount of apoptotic cells were assayed by flow cytometer (FCM) and TUNEL technique, and the positive rate of apoptosis was determined meanwhile. The results showed that two NS-shRNA were synthesized in vitro, and the more effective one was selected to be transfected into HL-60 cells. The blocking rate of NS-mRNA reached to 74.94%. After transfection for 48 hours, Wright-Giemsa staining showed nuclear fragmentations and "apoptosis body" in cells. The apoptosis rate in transfected group detected by flow cytometry and TUNEL method were (25.32 +/- 3.06)% and (27.3 +/- 3.21)% respectively, but were only (3.12 +/- 0.38)% and (3.30 +/- 1.52)% in control group, the difference between the transfected group and the control group was significant (p < 0.01). It is concluded that the apoptosis of HL-60 leukemia cells can be induced by the silencing NS gene expression in vitro, which provides a theoretical basis for using NS gene as a candidate target gene in therapy of malignant tumor.

Overexpression of Tiam1 gene and its relationship with invasive and metastatic ability of nasopharyngeal carcinoma / 中华病理学杂志

<p><b>OBJECTIVE</b>To explore biological aspects of Tiam1 gene expression in nasopharyngeal carcinoma cells.</p><p><b>METHODS</b>Tiam1/C1199HA expression plasmids were transfected into nasopharyngeal carcinoma cells of C666-1 and CNE1 by lipofectamine2000. RT-PCR, real-time PCR and Western blot Analyses were performed to evaluate the expression of Tiam1 mRNA and protein levels, respectively. In vitro cell adhesion, wound healing and matrigel invasion assays were used to study the biological impact of Tiam1 on cell adhesion, mobility and invasion.</p><p><b>RESULTS</b>Tiam1 over expression significantly increased the abilities of adhesion, migratory and invasion of C666-1 and CNE1 cells, comparing with that of the control untransfected cells (P < 0.05).</p><p><b>CONCLUSION</b>Tiam1 expression correlates with the invasion and metastasis of nasopharyngeal carcinoma cells.</p>

Promotion of invasion and metastasis in human breast carcinoma MCF-7 by SDF-1? / 中国癌症杂志

Background and purpose:We have already reported viral macrophage inflammatory protein-Ⅱcan induce surface chemokine receptor CXCR4 internalizated.Based on the diverse biological functions of SDF-1?/ CXCR4,this study was to investigate the effect of SDF-1?on invasion and metastasis of human breast carcinoma MCF-7 cells.Methods:MCF-7 cell's ability of invasion,metastasis and anoikis were used as end points.The invasive ability was measured by the number of cells that were able to penetrate polycarbonates coated with matrigel.The metastastatic ability was analyzed by Transwell chamber.The anoikis ability was detected by FCM.Results:SDF- 1?+MCF-7 cells formed long and abundant pseudopodia,and only few filopodia were detectable in MCF-7 cells.It was shown that adhesive and metastasis capability of MCF-7 cells was enhanced with SDF-1?cocultured(P