Objective:To explore the relation of negative emotions to erroneous gambling cognition and gambling addiction in college students.Methods:Totally 357 college students in Macau were selected and assessed with the Depression Anxiety Stress Scales (DASS),Gambling Related Cognition Scale (GRCS) and South Oaks Gambling Screen (SOGS).Bootstrap was used to test the mediating effect.Results:The students with higher erroneous gambling cognition got higher scores on negative emotions and addiction gambling than low-score group with erroneous gambling cognition (Ps ＜0.01).Mediating effect test showed that the direct effect of negative emotions on gambling addiction was 0.14,and the indirect effect was 0.05 (Ps ＜0.05).The indirect effect accounted for the total effect 26.3％.Conclusion:It suggests that negative emotions not only have direct effect on gambling addiction,but also have indirect effect on gambling addiction through erroneous gambling related cognition.

Objective To study the acute toxicity of slow-release (poly lactic-co-glycolic acid) PLGA-gemcitabine microsphere and gemcitabine on mice.Methods Up and down procedure (UDP) was used to determine the median lethal dose (LD50) of PLGA-gemcitabine microsphere and gemcitabine on mice respectively.Results The LD50 of PLGA-gemcitabine microsphere on mice was 256.30 mg/kg,gemcitabine was 8.91 mg/kg.The difference was 28.8 times.Conclusion PLGA-gemcitabine microsphere can markedly reduce the acute toxicity of gemcitabine.

BACKGROUND: The occurrence of sexual and urinary dysfunction is higher in patients who have received rectal cancer surgeries. This could most likely be correlated with the age of the patients and the approach applied in the operation. Therefore, how to preserve the sexual and urinary functions has become a hot point in this field.OBJECTIVE: This study was designed to investigate the influence of differences in age and therapeutical approach on the sexual and urinary function in patients with rectal cancer.DESIGN: Investigation study on patients.SETTING: General Surgery Department, the 309 Clinical Division, General Hospital of Chinese PLA.PARTICIPANTS: Some male patients with rectal cancer hospitalized in the General Surgery Department, the 309 Clinical Division, General Hospital of Chinese PLA were involved from January 1999 to October 2000. All of the 79eligible patients had received a radical surgery for rectal cancer by the time of study. Their sexual and urinary function before surgery were normal and an over-2-year follow-up after surgery was conducted on each of them. The two groups, which were classified into two groups according to surgical ap-proaches they received, contained comparable quantity of sampling and age distributions, which prompts the validity of the comparison.METHODS: By distributing follow-up letters, outpatient inquiries and phone call investigations; the follow-up was conducted to evaluate the sexual functions in these patients, including their penile erection and ejaculation. The erectile function was assessed according to the International Index of Erectile Function Questionnaire-5 (IIEF-5). The assessment on ejaculation was based on whether the patients had a sexual climax and whether they can ejaculate. The definition of urinary function consisted of both short-term and long-term urinary functions.MAIN OUTCOME MEASURES: The sexual desire, erectile function, ejaculation and the urinary function in patients within different age brackets.RESULTS: After Miles operation, 81% patients developed sexual dysfunction, 46% got short-term urinary dysfunction(19/41) and 5 % (2/41) had long-term urinary dysfunction. While after Dixon operation, 55% patients had sexual dysfunction, 29% (11/38) had short-term urinary dysfunction, and none of the patients had long-term urinary dysfunction. The difference between the outcomes of the two operations was significant( P ＜ 0. 05) .Sexual dysfunction occurred at a rate of 38% in the less-than-40 age bracket, 60% in the 40-to-59 age bracket, and 96% in the over-60 age bracket. The overall differences between different pairs of age brackets were significantly ( P ＜ 0. 05 ).CONCLUSION: There is a high rate of postoperative sexual and urinary dysfunction in male population. The age of patients and the approach adopted in the surgery are directly correlated with the rate of dysfunction. An autonomic nerve-preserving radical operation for rectal cancer can reduce the occurrence of sexual and urinary dysfunction effectively.

OBJECTIVETo evaluate the value of infusion chemotherapy by pump implantation via hepatic artery or portal vein or both (double-pump chemotherapy, DPC) for hepatic metastasis from colorectal cancer.

METHODSThirty patients with hepatic metastasis from colorectal cancer were divided into three groups: 1. Group I-DPC (12 patients). 2. Group II-hepatic artery implantation chemotherapy (10 patients) and 3. Group III-portal vein implantation chemotherapy (8 patients).

RESULTSResponse rate was 66.7% in group I, 60% in group II and 37.5% in group III. The 0.5-, 1-, 2-year survival rates were 100.0%, 75.0%, 41.7% in group I, 90.0%, 60.0%, 30.0% in group II and 87.5%, 50.0%, 25.0% in group III.

CONCLUSIONDouble pump implantation chemotherapy is effective in treating hepatic metastasis from colorectal cancer. It is better than hepatic artery or portal vein pump-implantation chemotherapy alone.

Adult ; Aged ; Colorectal Neoplasms ; drug therapy ; pathology ; Drug Therapy ; methods ; Female ; Hepatic Artery ; Humans ; Infusion Pumps, Implantable ; Infusions, Intra-Arterial ; Infusions, Intravenous ; Liver Neoplasms ; drug therapy ; secondary ; Male ; Middle Aged ; Portal Vein ; Therapeutics

OBJECTIVETo evaluate the effect of operative selective pump-insertion into the tumorous target artery, postoperative regional infusion chemotherapeutant and immunizator for treatment the latter gastrointestinal cancer.

METHODSThe effect of operative super-selective pump-insertion into the tumorous nutritious artery, postoperative regional infusion chemotherapeutant and immunizator for treatment 88 cases patients suffering from irremovable gastrointestinal cancer was observed. Of them, 45 cases were gastric cancer, 31 cases were rectal cancer, 11cases were colic cancer.

RESULTSComplete response 2 case; Part response 77 cases, 11 cases patients had received secondary resection after intraarterial chemotherapy. Non chang 9 cases; effective rates reach to 89.8%. One, two and three years survival rates were 86.4%, 30.7% and 10.2%. Average survival period were 21.5 mouths.

CONCLUSIONSuper-selective pump-insertion into the artery and regional intraarterial chemotherapy is an efficient way in treatment of the latter gastrointestinal cancer, which can delay the survival period of patients with tumor, and increase the resectable rate.

Adolescent ; Adult ; Aged ; Aged, 80 and over ; Catheters, Indwelling ; Combined Modality Therapy ; Female ; Gastrointestinal Neoplasms ; mortality ; therapy ; Humans ; Immunotherapy ; Infusions, Intra-Arterial ; Male ; Middle Aged

Objective　To study the effect of regional arterial chemotherapy (RACT) on unresectable gastric carcinoma (URGC). Methods　The clinical data of 100 patients with URGC treated by RACT were retrospectively analysed. Results　In addition to different degree of symptoms improvement, the size of gastric cancer became smaller in 81.2% of the cases, and the survival time of patients had been prolonged (mean 29.5 months). Conclusions　RACT is more effective for treating URGC and worthly of further clinical study.

Objective To evaluate the legitimate of regional artery infusion chemotherapy in the treatment of gastric carcinoma. Methods　The pharmacokinetics of 5-Fu after different route of administration was studied. Results High concentration of 5-Fu found in portal vein via left-gastric intra-artetial administration were 4-40 folds higher than the group via intravenous administration.The time of high concentrations of 5-Fu via left-gastric intra-arterial administration maintained significantly longer than by intravenous administraion. The concentration of 5-Fu in tumor tissues and paratumorous lymph tissues by intra-arterial administration were 19 times and 23 times of the group by intravenous administration. Conclusion Regional arterial infusion chemotherapy can significantly increase the concentration of chemotherapeutic drugs in the tumorous region.

Objective To evaluate the effect of internal iliac artery and portal vein chemotherapy in preventing local recurrence and hepatic metastasis after radical operation of rectal carcinoma. Methods 96 patients in PLA 309 Hospital with rectal carcinoma undergoing radical resection were divided into 2 groups: Portal vein and iliac artery perfusion chemotherapy group (pump chemotherapy group, 48 cases) and peripheral venous chemotherapy control group (48 cases). Results In the pump chemotherapy group, the 1 , 3 , and 5 year survival rates, local recurrence rate and hepatic metastasis rate were respectively 100%?83%?52%?13%? and 13%, compared with 88%?68%?32%?26% and 28% in control group (all P

Objective To evaluate role of double stapling technique in anus-saving operations for patient with low rectal carcinoma.Method The double stapling technique was used for anus-saving in colorectal anastomosis after anterior resection in 52 patiens with rectal cancer from 1994 to 1999,and the results were evaluated.Results 2 cases were failed to close rectal.4 cases were failed to anastomose.2 cases had anastomotic fistula(3.8%).3 cases had anastomotic stenosis (5.8%).2 cases had waund infection.1 case had anastomotic bleeding.There was no operative death.Conclusion The double stapling technigue provided a safe alternative for anus-saving operation in patients with rectal cancer.

Objective To evaluate the necessity, feasibility, accuracy and clinical value of sentinel lymph node (SLN) biopsy (SLNB) in early breast cancer. Methods In 32 cases with early breast cancer, sentinel lymph nodes identified by liposomes methylence blue mixture were excised for biopsy. The patients then received operations for breast cancer, including axillary lymph nodes dissection. SLN and avillary lymph nodes (ALN) were separately examined histopathologically. Results SLN was identified in 31 cases, success rate was 96.9%. In 9 of the 31 patients, SLN was positive for metastasis, in 22 of the 31 patients, SLN was negative for metastasis. In 10 of 32 patients, ALN was positive for metastasis, and in 22 of 32 patients, ALN was negative for metastasis. The sensitivity rate of SLNB was 90%, The accuracy rate of SLN was 93.8%, with a false negative rate of 10% and a false positive rate of zero. Conclusion The SLN biopsy can accurately predict the axillary metastasis for patients with breast cancer. Liposomes methylenc blue mixture tracing may increase the success rate of SLNB.