Objective To detect the micrometastasis status and necessity of dissection of lymph nodes of hepatodudenal ligament in advanced gastric antral cancer. Methods Eighty-six lymph node samples of hepatodudenal ligament which were negative in routine pathological examinations were collected from 45 gastric antral cancer patients with radical dissection.The expressions of CK20 mRNA were detected for the existence of micrometastasis by RT-PCR. Results Micrometastasis was found in 46 out of 86 lymph nodes(53.49%) and 23 out of 45 patients(51.11%),significantly different from the routine pathological examinations(both P

According to the constructivism approach, instructors have to adapt to the role of fa-cilitators but not teachers. Whereas a teacher gives a didactic lecture that covers the subject matter , a fa-cilitator helps the learner to get to his or her own understanding of the content. In the former scenario the learner plays a passive role and in the latter scenario the learner plays an active role in the learning pro-cess. Under the guidance of this theory, a multi-dimension teaching model based on classroom teaching, network platform and innovate experiments has been established in the course of basis of clinical labora-tory. It has been found that this model is conducive to raising students' interests in learning and to culti-vating student's comprehensive quality.

AIM: To investigate the immune stimulation capacity of B7-H1 blockade on immature dendritic cells (DCs) in vitro. METHODS: The human monocyte-derived dendritic cells were induced in the presence of cytokine GM-CSF and IL-4. The expression of B7-H1 was detected by FCM. On blockade of B7-H1, the maturation and endocytic activity, T cells stimulatory proliferation capacity, IL-12 production, T cell differentiation effect of DCs were detected by FCM, MTT assay, ELISA and ELISPOT, respectively. RESULTS: The expression of B7-H1 was increased with the induction of DCs. On day 7, the positive expression was 54.12%, and the TNF-? induced mature DCs had the positive expression rate of 83.64%. The blockade of B7-H1 on immature DCs had sharply increased their T cells stimulatory proliferation capacity and IL-12 production, and efficiently induced the development of Th1/Tc1 cells, but had no effect on their maturation and endocytic activity. CONCLUSION: The blockade of B7-H1 on immature DCs increases its immune stimulation activity. It is valuable to investigate the antitumor immune responses of DCs vaccine with B7-H1 blockade.

OBJECTIVETo compare the apical microleakage of Vitapex (calcium hydroxide based paste) with that of AH-plus and zinc oxide eugenol sealer when used with laterally condensed gutta percha obturation technique.

METHODSOne hundred single rooted human anterior teeth were instrumented and randomly divided into three experimental groups (A, B, C) of 30 teeth each and two control groups (D, E) of 5 teeth each. Group A was filled with laterally condensed gutta-percha using Vitapex as sealer. Group B was filled with laterally condensed gutta-percha using AH-plus as sealer. Group C was filled with laterally condensed gutta-percha using zinc oxide eugenol as sealer. Group D was the positive control. Group E was the negative control, which were coated with nail polish to entire root surface. Teeth were then suspended in 2% methylene blue. After this, teeth were demineralized dehydrated and cleared. Linear dye penetration was determined under stereomicroscope with calibrated eye piece.

RESULTSThe mean dye penetration for group A, B, C were respectively (0.57 +/- 0.56) mm, (0.79 +/- 0.96) mm and (1.07 +/- 1.12) mm. Group D demonstrated maximum dye penetration. Group E showed no dye penetration. There was no statistically significant difference between group B and group C (P > 0.05). However, there was statistically significant difference between group A and group B, C (P < 0.01).

CONCLUSIONThis study showed that Vitapex used as endodontic sealer material are better than AH-plus sealer and zinc oxide eugenol sealer.

Calcium Hydroxide ; Dental Leakage ; Dental Pulp Cavity ; Gutta-Percha ; Humans ; Molar ; Root Canal Filling Materials ; Root Canal Obturation ; Silicones ; Zinc Oxide-Eugenol Cement

OBJECTIVETo evaluate the overexpression of cyclin G1 in cervical intraepithelial neoplasia (CIN) and cervical carcinoma, and the correlation between cyclin G1 and high-risk human papilloma virus (HPV) infection.

METHODSAll of the specimens were obtained from the Department of Pathology of China-Japan Friendship Hospital from January 2000 to August 2004. We detected the expression of cyclin G1 with immunohistochemistry, HPV16/18 infection with in situ hybridization, and high-risk HPV infection with Hybrid capture system II (HC-II) in normal group (25 cases), CIN I (48 cases), CIN II (56 cases), CIN III (54 cases), and invasive cervical squamous-cell carcinoma (SCC, 31 cases).

RESULTSThe positive rates of cyclin G1 expression in CIN (77.85%) and SCC cervical tissues (87.10%) were significantly higher than normal (8.00%, P < 0.01), and the intensities of cyclin G1 expression in CIN (40.60%) and SCC cervical tissues (61.51%) were significantly higher than normal (2.72%, P < 0.05). The positive rates and intensities of cyclin G1 expression increased gradually with the grade of cervical lesions. High-risk HPV infection rates were higher in CIN and SCC than normal groups (P < 0.05). There was a positive correlation between cyclin G1 expression and high-risk HPV infection detected with HC-II (Kendall's tau-b = 0.316, 0.269, 0.352, and 0.474 in CIN I, CINII, CIN III, and SCC, respectively, P < 0.05).

CONCLUSIONSCyclin G1 is overexpressed in CIN and SCC. Cyclin G1 may be a biomarker for detecting CIN and SCC. Cyclin G1 may play an important role in the oncogenesis of CIN and SCC by high-risk HPV infection.

Carcinoma, Squamous Cell ; metabolism ; virology ; Case-Control Studies ; Cervical Intraepithelial Neoplasia ; metabolism ; virology ; Cyclin G ; Cyclin G1 ; Cyclins ; metabolism ; Female ; Human papillomavirus 16 ; genetics ; isolation & purification ; Human papillomavirus 18 ; genetics ; isolation & purification ; Humans ; Immunohistochemistry ; In Situ Hybridization ; Papillomavirus Infections ; metabolism ; virology ; Uterine Cervical Neoplasms ; metabolism ; virology

OBJECTIVE: To investigate the prevalence of simple obesity and its risk factors in preschool children in Fuzhou, China. METHODS: The physical examination data of 14 kindergartens in Fuzhou, China were collected by stratified cluster random sampling. The detection rate of simple obesity was calculated. The children with normal body weight were selected as the control group by 1:1 case-control method. The risk factors for childhood simple obesity were investigated by self-made questionnaire and multivariate logistic regression analysis. RESULTS: A total of 5 767 children aged 3-6 years were enrolled in this study. A total of 289 (5.01%) children with simple obesity were screened out, including 153 with mild obesity and 136 with moderate to severe obesity. The prevalence rate of simple obesity gradually increased with the age of children. The multivariate logistic regression analysis showed that the following factors were independent risk factors for simple obesity: preference for fried food (OR=4.789, P<0.05), caregivers' over-concern about diet (OR=4.620, P<0.05), eating before sleep (OR=4.006, P<0.05), eating fast (OR=3.221, P<0.05), preference for sweets (OR=2.282, P<0.05), high birth weight (OR=2.202, P<0.05), overweight or obesity in father (OR=2.074, P<0.05), overweight or obesity in mother (OR=2.047, P<0.05), more than 1.2 times the food intake at the same age (OR=2.013, P<0.05), watching TV (OR=1.665, P<0.05), and lack of exercise (OR=1.463, P<0.05). CONCLUSIONS The prevalence rate of simple obesity is 5.01% in preschool children in Fuzhou, China. The development of simple obesity is multifactorial. It is suggested that doctors, parents, and teachers should strengthen health education for preschool children, help them develop good living and eating habits, and encourage them to take more exercise, in order to reduce the development of simple obesity.
Body Mass Index ; Child ; Child, Preschool ; China ; Humans ; Obesity ; epidemiology ; Prevalence ; Risk Factors

OBJECTIVETo investigate the behavioral changes and the levels of monoamine neurotransmitters in the anterior cortex in the olfactory bulb damage rats after being treated with Guanyu capsules (GYC).

METHODOpen-field test and step-down passive avoidance test were used to observe the behavior in model rats. HPLC-ECD was used to analyze the influences of GYC on the levels of monoamine neurotransmitters.

RESULTIn the model rats, there was a characteristic hyperactivity in the Open-field and learning deficits in step-down passive avoidance (P < 0.01). The contents of 5-HT reduced, and the rate of DOPAC/DA increased significantly (P < 0.01). GYC 1.2, 0.6 g x kg(-1) could correct behavioral changes increase the contents of 5-HT, and decrease DOPAC/DA level (P < 0.01).

CONCLUSIONGYC can correct behavioral changes in rats model of olfactory bulb damage, and regulating 5-HT and DA metabolism in cortex is one of the antidepressive mechanisms of GYC.

3,4-Dihydroxyphenylacetic Acid ; metabolism ; Animals ; Behavior, Animal ; drug effects ; Biogenic Monoamines ; metabolism ; Cerebral Cortex ; metabolism ; Curcuma ; chemistry ; Depression ; etiology ; metabolism ; Dopamine ; metabolism ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Dryopteris ; chemistry ; Male ; Olfactory Bulb ; pathology ; Plants, Medicinal ; chemistry ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Serotonin ; metabolism

OBJECTIVETo study the effects of Qilan Tangzhining capsule on glucose and lipid metabolism in diabetes mellitus and hyperlipemia.

METHODRats were fed with high sugar and fat food for 2 months, then 2% streptozocin (STZ, 30 mg kg(-1)) was injected intraperitoneally to induce hyperglycemia and hyperlipemia. After the model rats were administrated drugs, the blood glucose, the serum lipids, and the histopathology of the liver and pancreas were observed.

RESULTQilan Tangzhining capsule could decrease the FBG and the serum TC, TG, LDL-C, increase HDL-C, and improve the histopathologic injury of the liver and pancreas.

CONCLUSIONQilan Tangzhining capsule can not only adjust the blood glucose and lipid, but also improve the histopathology injury of the liver and pancreas.

Animals ; Astragalus membranaceus ; chemistry ; Blood Glucose ; metabolism ; Capsules ; Diabetes Mellitus, Experimental ; blood ; chemically induced ; complications ; Drug Combinations ; Drugs, Chinese Herbal ; isolation & purification ; pharmacology ; Gynostemma ; chemistry ; Hyperlipidemias ; blood ; complications ; Lipids ; blood ; Male ; Plants, Medicinal ; chemistry ; Random Allocation ; Rats ; Rats, Wistar

BACKGROUNDEndovascular stent-grafting is widely used to treat thoracic aortic dissection. However, little information is available regarding outcome following simultaneous exclusion of multiple tears. This report details eight years of experience using simultaneous multi-tear exclusion for treatment of Stanford type B thoracic aortic dissection resulting in successful aortic remodeling without adverse events.

METHODSFrom September 1998 to January 2006, 29 type B thoracic aortic dissection patients (24 men, 5 women; 27 chronic, 2 acute; mean age 58 years, range 45 - 77 years) were treated by simultaneous multi-tear exclusion in our center. Magnetic resonance angiography was used as the preoperative evaluation method. Different kinds of stent-grafts were used. The patients were followed up with contrast-enhanced spiral computed tomography at 6 months postoperatively and yearly thereafter.

RESULTSTwenty-nine surgeries were completed successfully using at least 2 stent-grafts per patient (range: 2 - 6, mean: 2.7). No major procedure-related complications, such as rupture, paraplegia, aortic branch ischemia or cerebral infarction, were observed. During follow-up, favorable remodeling of the aorta was observed.

CONCLUSIONSThe mid-term result of thoracic aortic dissection with simultaneous multi-tear exclusion was satisfactory. With the improvement of stent-grafts, simultaneous multi-tear exclusion should find wider application and become an optimal strategy for thoracic aortic dissection.

Aged ; Aneurysm, Dissecting ; pathology ; surgery ; Aortic Aneurysm, Thoracic ; pathology ; surgery ; Blood Vessel Prosthesis Implantation ; methods ; Female ; Humans ; Male ; Middle Aged ; Stents ; Treatment Outcome