Arteriovenous Fistula ; complications ; etiology ; Cardiac Output, High ; Femoral Artery ; Femoral Vein ; Heart Failure ; etiology ; Humans ; Intra-Aortic Balloon Pumping ; adverse effects ; Male ; Middle Aged

Objective To observe the change of capillary pericapillary cells in rats with myocardial infarction and the influence of supplementing qi and activating blood circulation herbs, and explore its mechanism of improving myocardial perfusion. Methods The rat model was established by ligaturing the left anterior descending coronary artery. On the base of ECG evaluation, successfully modeled rats were randomly divided into the model group, group treated with supplementing qi and activating blood circulation Chinese medicine (activating blood and supplementing qi group), group treated with Perindopril (Perindopril group), group treated with Tongxinluo Capsules (Tongxinluo group). The sham-operation group was taken as the control. There were totally 5 groups. The model group and the sham-operation group were treated with normal saline. The changes of myocardial capillary density (MCD) and number of pericapillary cells on the 7th, 28th day after medicinal administration were observed. Results On the 7th and 28th day, the MCD decreased significantly and the number of capillary pericapillary cells increased significantly in the model group compared with the sham-operation group (P<0.01). The MCD increased significantly in the activating blood and supplementing qi group, Perindopril group and Tongxinluo group compared with the model group (P<0.01). The number of pericapillary cells decreased significantly in the activating blood and supplementing qi group, Perindopril group and Tongxinluo group compared with the model group (P<0.01). Conclusion The supplementing qi and activating blood circulation herbs can improve regional myocardial blood supply by decreasing the number of pericytes and promoting regeneration of capillary.

Objective To evaluate the feasibility and outcomes of different surgical approaches on the basis of sentinel lymph node biopsy (SLNB) in treating early-stage vulvar cancer, and discuss the proper strategy for individualized treatment. Methods The medical charts of patients with early-stage vulvar cancer treated in Sun Yat-sen University between January 2004 and December 2013 were retrospectively collected. A total of 74 patients who received sentinel lymph node(SLN)detection in primary surgery were enrolled (average age 55). The surgical approaches contained SLNB, inguinal lymphadenectomy (IL), and extensive vulvectomy. The SLN were examed on intraoperative frozen sections. The treatment protocols, lymphatic metastasis, postoperative recovery condition, recurrence and survival data were collected and analyzed. Results At least one SLN was successfully detected in 68 (92%,68/74) patients. SLN were positive in 21 patients, of whom 12 (group A) underwent bilateral IL, and 9 (group B) received radiotherapy without performed IL. SLN were negative in 47 patients, of whom 26 (group C) underwent bilateral IL and one of them had a non-SLN metastasis, and 21 (group D) were advised to follow-up. The coincidence of pathological results between frozen and paraffin sections was 100%. The sensitivity and specificity of SLNB for diagnosis of lymph node metastasis were 95% and 100%, respectively. A total of 44 complications happened in patients underwent SLNB and IL (group A and C), including 16 poor wound healing, 14 lymphedema, 8 lymphatic fistulas, 3 phlebothrombosis and 3 infections. There were no complications happened in patients underwent SLNB alone (group B and D), among whom the operation time, bleeding amount, and hospital stay were also significantly less than those in patients underwent SLNB and IL. The median follow-up time was 41 months and the 3-year overall survival rate was 85% in the whole series. Recurrences were observed in 11 patients and 9 of them died of the tumor with the median survival time of 15 months. In patients with positive SLN (group A and B), the 3-year overall survival rate was 58% with 8 patients died of the disease, including 4 in group A and 4 in group B. In patients with negative SLN (group C and D), the 3-years overall survival rate was 97% with one patient in group D died of the tumor, and significantly higher than that of patients with positive SLN (P=0.003). The 3-year overall survival rate was significantly difference. In univariate analysis by log-rank test showed that, neither in patients with nor without SLN metastasis the prognosis differed with respect to surgical approaches (group A vs B, P=0.709;group C vs D, P=0.253). Univariate analysis by log-rank test showed that, lymph node metastasis, pathological grade, depth of invasion, and tumor location could significantly affected survival (P<0.05), whereas age, tumor diameter, and surgical approach didn′t (P>0.05). Multivariate analysis showed that lymph node metastasis (RR=21.57, 95%CI:2.68-173.10, P=0.002) and tumor location (RR=7.85, 95%CI:1.79-34.50, P=0.024) were the independent factors for overall survival. Conclusions Lymph node metastasis is an independent prognosis factor for patients with early-stage vulvar cancer. SLNB could accurately diagnose the status of lymph nodes and help to decide subsequent treatment. The omissions of IL in patients with negative SLN avoid surgical morbidity and shorten postoperative recovery period without an increased risk of recurrence.

Objective To determine the electrocardiographic (ECG) characteristics of myocardial infarction (MI) evolution in rats and the intervention effect of Chinese herbs, and to provide basis for the establishment of the criteria for ECG diagnosis and assessment of drug therapeutic effects of rats MI. Methods Totally 140 male SD rats were randomly divided into sham operation group, model group, replenishing qi group, activating blood group, replenishing qi and activating blood (1∶2) and (2∶1) group as well as Tongxinluo group, each group with 20 rats. The rat MI model was established by ligating the left anterior descending coronary artery. The treatment groups were administrered with corresponding drugs by gavage from the first day after operation. The sham operation group and model group were given the same volume of distilled water. The 12-lead ECGs were recorded before, immediately after, 1st and 2nd week after operation respectively. The voltage value of ST segment deviation, the time limit of QRS complex and the number of animals with pathologic Q wave were evaluated for statistical analysis. Results Model group showed the elevation of ST segment, significantly prolonged time limit of QRS complex (P<0.01), and no pathologic Q wave showed immediately after operation compared with sham operation group. And all above observational indexes reached the peak at 1st week and declined at 2nd week after operation. Compared with model group at 2nd week after operation, replenishing qi and activating blood (1∶2) group and (2∶1) group all presented remarkable dropping of ST segment, shortening in time limit of QRS complex and reduction in number of rats with pathologic Q wave, of which 2∶1 group showed the most (P<0.01). Activating blood group only displayed decreases in time limit of QRS and number of rats with pathologic Q wave (P<0.05), and no significant decline in ST segment. Replenishing qi group demonstrated no significant changes in above three observational indexes (P>0.05). Thus, we proposed the criterion for the ECG diagnosis of rats MI as well as the criterion for the ECG assessment of drug therapeutic effects of rats MI. Conclusion ECG can overall and sensitively evaluate the evolution and drug therapeutic effects of MI in rats, thus providing a relatively objective and available assessment method for the experimental studies of myocardial ischemic diseases.

OBJECTIVE: To investigate the clinical characteristics of and prognostic factors for primary malignant melanoma of the vagina. METHODS: Clinical data from 31 patients treated for primary malignant melanoma of the vagina at the Sun Yat-sen University Cancer Center between March 1970 and June 2005 were retrospectively analyzed. RESULTS: The median age was 58 years (range, 18 to 73 years), and the main symptoms reported were vaginal bleeding and vaginal discharge. Most tumors were of the nodular type and classified as stage I according to International Federation of Gynecology and Obstetrics staging criteria. Surgery was performed on 22 patients, chemotherapy was administered to 7 patients, and immunotherapy was administered to 19 patients. Recurrent tumors developed in 11 patients (35.5%) during a median follow-up period of 20.2 months (range, 1 month to 18 years). The 5-year overall survival rate was 32.3%. Univariate analysis revealed that macroscopic tumor growth and the treatment method significantly affected survival outcome (p=0.039 and p<0.001, respectively), whereas the radicality of surgery did not (p=0.296). Multivariate analysis revealed that macroscopic tumor growth (hazard ratio [HR], 4.1; 95% confidence interval [CI], 1.4 to 12.1; p=0.010) and treatment method (HR, 0.3; 95% CI, 0.1 to 0.9; p=0.025) were independent prognostic factors for overall survival. CONCLUSION: Patients with primary vaginal melanoma have a poor prognosis. Macroscopic tumor growth and treatment method are prognostic factors for primary malignant melanoma of the vagina.
Follow-Up Studies ; Gynecology ; Humans ; Immunotherapy ; Melanoma ; Multivariate Analysis ; Obstetrics ; Prognosis ; Retrospective Studies ; Solar System ; Survival Rate ; Uterine Hemorrhage ; Vagina ; Vaginal Discharge

Objective: To estimate the impact of lymph node dissection on survival in patients with apparent early-stage epithelial ovarian cancer (EOC). Methods: We conducted a retrospective review of patients with clinical stage I–II EOC. All patients underwent primary surgery at Sun Yat-sen University Cancer Center between January 2003 and December 2015. Demographic features and clinicopathological information as well as perioperative adverse events were investigated, and survival analyses were performed. Results: A total of 400 ovarian cancer patients were enrolled, and patients were divided into 2 groups: 81 patients did not undergo lymph node resection (group A), and 319 patients underwent lymph node dissection (group B). In group B, the median number of removed nodes per patient was 25 (21 pelvic and 4 para-aortic nodes). In groups A and B, respectively, the 5-year progression-free survival (PFS) rates were 83.3% and 82.1% (p=0.305), and the 5-year overall survival (OS) rates were 93.1% and 90.9% (p=0.645). The recurrence rate in the retroperitoneal lymph nodes was not associated with lymph node dissection (p=0.121).The median operating time was markedly longer in group B than in group A (220 minutes vs. 155 minutes, p<0.001), and group B had a significantly higher incidence of lymph cysts at discharge (32.9% vs. 0.0%, p<0.001). Conclusion In patients with early-stage ovarian cancer, lymph node dissection was not associated with a gain in OS or PFS and was associated with an increased incidence of perioperative adverse events.

AIMThe aim of this survey was to compare Chinese natives and foreign inhabitants in Chengdu, China, with respect to: (1) attitudes towards dental appearance, (2) subjective orthodontic treatment need, and (3) the main factors influencing orthodontic treatment need.

METHODOLOGYA total of 522 subjects, including 227 foreign inhabitants and 295 Chinese natives in Chengdu participated in the survey. A simple random sampling method was adopted and a face-to-face interview was conducted at some public sites using a questionnaire. Data was entered by two persons synchronously using Epidata 3.0, and SPSS 13.0 was used to analyze these data.

RESULTS89.0% of foreign inhabitants were satisfied with their teeth compared to only 46.8% of Chinese natives. Females were more dissatisfied with their teeth than males. Chinese natives put improving appearance as the top priority (55.9%) for seeking orthodontic treatment; however, in foreign inhabitants, the main reason for seeking treatment was to improve masticatory function (44.1%), followed by "to be pretty" (35.2%). The importance of well-aligned teeth and self-perception of psychosocial impact of malocclusion were the same two main factors influencing subjective orthodontic treatment need (P < 0.05) in foreign inhabitants and Chinese natives. Subjective orthodontic treatment need between the two target groups was significantly different (P < 0.05).

CONCLUSION(1) It was very common that Chinese natives were dissatisfied with their dental appearance, and their subjective orthodontic treatment needs were high. (2) There were some differences in orthodontic treatment motives between the two target groups. (3) There were differences in subjective orthodontic treatment needs between foreign inhabitants and Chinese natives. However, the prominent influential factors were almost the same. There may be benefit to understanding subjective orthodontic needs of different races.

Adolescent ; Adult ; Asian Continental Ancestry Group ; psychology ; Attitude to Health ; ethnology ; China ; Culture ; Emigrants and Immigrants ; psychology ; Esthetics, Dental ; Female ; Humans ; Interpersonal Relations ; Male ; Malocclusion ; psychology ; Mastication ; physiology ; Middle Aged ; Motivation ; Needs Assessment ; Orthodontics, Corrective ; psychology ; Patient Acceptance of Health Care ; Personal Satisfaction ; Self Concept ; Sex Factors ; Young Adult

BACKGROUNDTissue factor (TF) is overexpressed in many malignant tumours and is linked to the pathogenesis and prognosis of such malignancies. In vitro studies have proved that reduced expression of TF has inhibitory effect on the angiogenesis and cell proliferation of the malignant tumour. Therefore, TF suppression has been raised as a possible treatment for malignant tumours. Here we investigated the effect of celecoxib on TF expression induced by tumour necrosis factor alpha (TNFalpha) in PANC-1 cells and a possible molecular mechanism underlying the celecoxib effect.

METHODSVarious doses of celecoxib solution were added to standard cell numbers of PANC-1 cells mixed with equal dose of TNFalpha for 6 hours. The expression of tissue factor was detected quantitatively by Western blot, whilst the activation of nuclear factor kappaB was tested by electromobility shift assay.

RESULTSAs the doses of celecoxib increased, the tissue factor expression was decreased in PANC-1 cells and so was the activation of nuclear factor kappaB.

CONCLUSIONSCelecoxib can downregulate the expression of tissue factor induced by TNFalpha in PANC-1 cells. This antitumour effect of celecoxib can be explained indirectly via its suppressive role in activation of nuclear factor kappaB.

Celecoxib ; Cell Line, Tumor ; Cyclooxygenase 2 Inhibitors ; pharmacology ; Gene Expression Regulation ; drug effects ; Humans ; NF-kappa B ; metabolism ; Pancreatic Neoplasms ; metabolism ; pathology ; Pyrazoles ; pharmacology ; Sulfonamides ; pharmacology ; Thromboplastin ; genetics ; Tumor Necrosis Factor-alpha ; antagonists & inhibitors

OBJECTIVE: Visual search is an important attention process that precedes the information processing. Visual search also mediates the relationship between cognition function (attention) and social cognition (such as facial expression identification). However, the association between visual attention and social cognition in patients with schizophrenia remains unknown. The purposes of this study were to examine the differences in visual search performance and facial expression identification between patients with schizophrenia and normal controls, and to explore the relationship between visual search performance and facial expression identification in patients with schizophrenia. METHODS: Fourteen patients with schizophrenia (mean age=46.36+/-6.74) and 15 normal controls (mean age=40.87+/-9.33) participated this study. The visual search task, including feature search and conjunction search, and Japanese and Caucasian Facial Expression of Emotion were administered. RESULTS: Patients with schizophrenia had worse visual search performance both in feature search and conjunction search than normal controls, as well as had worse facial expression identification, especially in surprised and sadness. In addition, there were negative associations between visual search performance and facial expression identification in patients with schizophrenia, especially in surprised and sadness. However, this phenomenon was not showed in normal controls. CONCLUSION: Patients with schizophrenia who had visual search deficits had the impairment on facial expression identification. Increasing ability of visual search and facial expression identification may improve their social function and interpersonal relationship.
Asian Continental Ancestry Group ; Automatic Data Processing ; Cognition ; Facial Expression* ; Humans ; Schizophrenia*

OBJECTIVETo explore the classification, choice of surgical procedures and the clinical outcome of surgical management for chronic pancreatitis.

METHODS54 patients with chronic pancreatitis undergoing operation in our hospital from 1983 to 2004 were analyzed retrospectively, who were divided into chronic calcifying pancreatitis and chronic obstructive pancreatitis according to the clinical manifestations.

RESULTSThere were 41 men (76%) and 13 women (24%) with a mean age of 54 years. The cause of chronic pancreatitis was alcohol related in 25 cases (46%), cholelithiasis in 21 (39%), and previous episodes of acute pancreatitis in 18 (33%). Clinical manifestations included abdominal pain in 38 cases (70%), obstructive jaundice in 27 cases (50%). There existed a significant difference in some clinical materials between the two groups of chronic calcifying pancreatitis and chronic obstructive pancreatitis, which might mean the different pathologic basis in the two kinds of chronic pancreatitis. A total of 34 patients underwent nine different operations without perioperative deaths. Both the Puestow procedure and the pancreatoduodenectomy was safe and achieved pain relief in a large percentage of patients, which could also improve the exocrine function whereas the endocrine function remained unchanged. Addition of biliary bypass to the Puestow procedure was suitable for the patients with stenosis of common bile duct. Jaundice was the main manifestation in the patients with the inflammatory mass in the head of the pancreas and Whipple's procedure or other resectional procedures should be performed for them. Only drainage of bile duct had a better outcome for the relief of jaundice, but its effect to pancreas need to be further evaluated.

CONCLUSIONThe clinicopathologic characteristics of obstructive chronic pancreatitis was more variable and the surgical management should be also different for individuals.

Adolescent ; Adult ; Aged ; Chronic Disease ; Female ; Humans ; Male ; Middle Aged ; Pancreatectomy ; methods ; Pancreaticoduodenectomy ; Pancreaticojejunostomy ; Pancreatitis ; classification ; pathology ; surgery ; Retrospective Studies