Objective To compare the effect of methotrexate combined with laparoscopic surgery on pregnancy outcome of patients with tubal pregnancy treated with conservative treatment.Methods 96 patients who were diagnosed of tubal pregnancy,fertility requirements and no clinical data given birth were analyzed retrospectively.Depending on the method of treatment was divided into 46 cases of methotrexate and laparoscopic group of 50 patients.Postoperative intrauterine pregnancy,ectopic pregnancy and secondary infertility situation again were compared.Results Laparoscopic group in intrauterine pregnancy rate was 70.0％,which was significantly higher than that in the methotrexate group(47.8％),and the difference was statistically significant(x2 =13.229,P ＜ 0.05) ;laparoscopic ectopic pregnancy rate was 14.0％ against 17.4％ with methotrexate group,the difference was not statistically significant(x2 =2.037,P ＞ 0.05) ; methotrexate group was 34.8％ of secondary infertility was significantly higher than thatin the laparoscopic group (16.0％),the difference was statistically significant (x2 =12.784,P ＜ 0.05).Conclusion Laparoscopic surgery after conservative treatment of tubal repregnancy outcome is better than methotrexate.

Objective To explore and classify the subjective opinions of nurses on whistle- blowing, and identify the subjective characteristics of each type. Methods This study applied Q -methodology, protocols which could determinate subjective opinions of nurses on histle-blowing were set up and underwent interview investigation, data of the interviews went through Q-factor analysis. Results Most nurses had a positive attitude toward whistle - blowing because it could prevent any nursing activity not based on expertise and professional ethics from causing disadvantages for patients. At the same time, however, they requested the creation of a legal framework in which whistle-blowing was done in a way to increase trust among colleagues. Meanwhile, some nurses showed resistance to whistle - blowing. Conclusions Whether whistle - blowing can reach its aims depends on nurses' attitude toward it. Most Korean nurses support whistle-blowing. Nursing activity not based on expertise and professional ethics and causing disadvantages for patients can be avoided if a legal framework is established for whistle-blowing.

OBJECTIVE:To discuss the use of allopurinol for the reduction of serum uric acid level in patients with chronic kidney disease complicating hyperuricacidemia so as to delay the progression of chronic renal disease.METHODS:A total of 47 patients with chronic kidney disease complicating hyperuricacidemia were randomly divided into treatment group and control group:the treatment group was given allopurinol 100～200mg?d-1 in addition to the antihypertensive therapy as adopted in the control group or the common therapy for 12 months.RESULTS:As compared with the control group,serum creatinine level was lower and the rate of renal function deterioration was significantly decreased in the treatment group(P

Combined Modality Therapy ; methods ; trends ; Heart Defects, Congenital ; therapy ; Humans

BACKGROUND:Class II malocclusion is commonly observed in clinics, with the main manifestation of skeletal malocclusion, and mandibular retrusion is the main reason. Class II malocclusion should be treated early to correct skeletal malformation and improve facial appearance. OBJECTIVE:To compare the biomechanics change in early treatment of Class II division 1 malocclusion with Twin-Block appliance and straight wire appliance combined with face-bow and Class II drawing. METHODS: Thirty patients with malocclusion who were at peak velocity on the growth curve were randomly divided into two groups, with 15 cases in each group. Patients in each group were treated with Twin-Block appliance and straight wire appliance combined face-bow and Class II drawing, respectively. The cephalometric records of al patients were examined before and after the treatments. The acquired data were processed by statistical analysis. RESULTS AND CONCLUSION:After treatment, al molars and cuspid teeth achieved or reached Class I, and ANB angle decreased to normal range. The bone effect of Twin-Block appliance was more significant than straight wire appliance. Using Twin-Block appliance, the length of mandible body and lower face height increased significantly. Experimental findings indicate that, Twin-Block appliance has significant therapeutic effects in treatment of early skeletal Class II division 1 malocclusion patients, who are at peak velocity on the growth curve. With the biomechanical effects, this treatment corrects asymmetrical jaw relation, reconstructs the tissue, and obtains satisfactory lateral facial profile of soft tissues. The therapeutic effect is more obvious for patients with obvious mandibular retrusion, flared upper incisors and upright lower incisors.

BACKGROUND:Methylene blue can hinder abnormal pain conduction via the sensory nerve, and its mechanism is to block bradykinin-induced hyperalgesia and eliminate pain caused by local tissue inflammation.
OBJECTIVE:To observe the influence of methylene blue solution on the lumbar spinal cord and spinal ganglia function of rats, and to investigate whether methylene blue is safe for treating discogenic low back pain.
METHODTotal y 120 Wistar rats were randomly divided into five groupthree experimental groups, a saline control group and a blank control group, n=24 in each group. Lumbar segmental dura was exposed in rats. In the three experimental groups, 0.2, 1, and 2 mL methylene blue were injected epidural y, respectively. The saline control group was subjected to the epidural injection of 1 mL saline. In the blank control group, there was no treatment. Six rats from each group were selected randomly and perfused at 30 minutes, 2 hours, 24 hours, 72 hours after injection, respectively. Then, the corresponding segments of the spinal cord and ganglions were removed. Hematoxylin eosin staining was used for comparing histological and structural changes under light microscope.
RESULTS AND CONCLUSION:Hematoxylin-eosin staining showed that at 30 minutes, 2 hours, 24 hours and 72 hours after injection of methylene blue, the spinal dorsal side exhibited the structural integrity, clear boundaries between the white matter and gray matter, dense nerve fibers in the white matter, and round or oval nuclei of glial cells among fibers;dense nerve fibers in the posterior horn of gray matter;light-colored neuronal nuclei with prominent nucleoli;a bundle of nerve fibers among cellpopulations. There was no significant change in tissue structure of lumbar spinal cord and spinal ganglia between the experimental groups and the saline control group or between the experimental groups and the blank control group. Thus, the epidural injection of 1%methylene blue has no significant effect on the spinal cord and spinal nerve structures.

Objective Toexplore the effect of Bcl2 and Ercc1 gene on apoptosis by RNA interference of Bcl2 and Ercc1 gene expression in non-small cell lung cancer cell line. Methods shRNA targeting Bcl2 and Ercc1 gene were cloned into vector to construct recombinant adenovirus plasmids which were transfected into HEK293 cells. High titer adenovirus was obtained after package and amplification. H460 cells were infected with the adenovirus and apoptosis rate was detected by flow cytometry. Results The results of restriction endonuclease digestion showed that recombinantadenovirus vector adsiBcl2-Ercc1 was successfully constructed. The positive 1 200 bp amplification bands could be seen in PCR analysis , and the titer of the adenovirus was 5 × 1011/mL. The apoptosis rate of AdsiBcl2-Ercc1 was higher than that of the two single silenced gene groups. Conclusions The recombinant plasmids and recombinant adenovirus were successfully constructed. Silencing of Bcl2 and Ercc1 through shRNA promotes the apoptosisin lung cancer cells.

Pain is one of usual symptons of mid-late cancer patients, radioactive particle interstitial im- plantation can not only control tumor advancement,but also alleviate pain in different degree by inactivating part nerves or relieving compression. It has showed significant effect in system tumor--gastric cancer, colon cancer and head and neck cancer without severe cemplication,effering a new method of curing cancerous pain.

Macrophage migration-inhibitory factor (MIF) is a cytokine which can promote tumorigenesis.MIF can promote tumorigenesis by directly inducing oncogene transformation,stimulating cell division,as well as indirectly inhibiting tumor apoptosis,promoting its invasiveness and angiogenesis.MIF-targeted biological therapy may become a new therapeutic strategy for malignant tumor.

Objective: The effect of whole body irradiation (WBI) on B7-1 and B7-2 express ion in peritoneal macrophages in mice was observed.Methods:Immunohistochemistry (ABC method) was used. Results: The upregulation of B7-2 expression induced by WBI X-rays appeared ea r lier than that of B7-1.The study on the dose-effect relationship showed that t he ex pression of both B7-1 and B7-2 reached its peak at 0.075 Gy after WBI X-rays. Th e doses inducing a second peak of B7-1 and B7-2 upregulation were higher in th e case of WBI in comparison with in vitro irradiation. Conclusion: The results suggested that the upregulation of expression of B7 mole cules after irradiation might be an important factor involved in the enhancing e ffect of low dose radiation on immunity.