Purpose:To evaluate the curative effects and side effects of 3-dimensional conformal radiotherapy (3DCRT) in the treatment of liver carcinoma.Methods:56 patients with liver carcinoma (Forty three patients were primary hepatic carcinoma and 13 liver metastatic tumors) with 62 lesions were treated with 3DCRT for 30～45 Gy/5～10 f/1～2 weeks with fractionated doses ranging from 4Gy to 8Gy.Results:In the 1～3 months after 3DCRT the results examined by CT or MRI showed that the 62 lesions(56 patients) had CR 24% (15/62),PR 50%(31/62),NC 16% (10/62) and PD 10% (6/62).The overall response rate (CR+PR) was 74%.Conclusions:3DCRT is an effective and safe treatment for hepatic malignant tumor and it can be tolerated by most of the patients.The immediate response of tumor is encouraging. The survival rate and late complications remain to be observed.

Objective To study the effects of Guhong injection on the expression of vascular endothelial growth factor (VEGF) in the cortex 14 days after cerebral ischemia-reperfusion. Methods 30 male Sprague-Dawley rats were divided into sham group (n=6), ischemia group (n=6), aceglutamide injection group (n=6), Honghua injection group (n=6) and Guhong injection group (n=6). The middle cerebral arteries of all the rats were occluded for 2 hours and reperfusion, except the sham group. Drugs were administered once a day 24 hours after reperfusion. The expression of VEGF in cortex was detected with enzyme-linked immunosorbent assay (ELISA) 14 days after reperfusion. Results The expression of VEGF decreased in the ischemia group compared with the sham group (P<0.001), and it increased both in the aceglutamide and Guhong injection groups compared with the ischemia group (P<0.05). Conclusion Guhong injection can significantly increase the expression of VEGF in the cortex 14 days after ischemia-reperfusion, which may be one of the ways for neuro-protection.

In industrial glutamate fermentation, intermitted feeding glucose with the help of off-line glucose measurement is generally necessary. This kind of feeding strategy could cause large variations in glucose concentration so that it is not favorable for the achievement of efficient and stable glutamate fermentation. Glutamate fermentation is characterized with typical non-growth association behavior, and during glutamate production phase glucose consumption is closely correlated with ammonia consumption. In this study, glucose concentration was controlled at various pre-determined levels by predicting glucose consumption amount and thus its concentration with the aid of on-line monitoring ammonia consumption. When glucose concentration was controlled around a lower level of 5 g/L~10 g/L, the final glutamate concentration could reach a relatively higher level of 80 g/L. In this way, the huge osmotic stress change due to the large glucose concentration variation with the intermitted feeding method could be avoided and the glutamate fermentation performance enhancement be expected.

Objective To examine the expression of toll-like receptor 2(TLR2)in peripheral blood monocytes and explore its association with disease stages and clinical manifestations and to explore the patho- genesis of rheumatoid arthritis(RA).Methods The expression of toll-like receptor 2 in peripheral blood monocytes from 47 RA patientis(27 in active stage and 20 in stable stage)and 18 normal individuals were de- tected by flowcytometry and RT-PCR.Results The expression of toll-like receptor 2 in peripheral blood monocytes in patients with active disease was significantly increased compared to non-active patients and nor- mal individuals,The expression was found to correlate with the Disease Active Score(DAS),serum C-reactive protein(CRP)level and the erythrocyte sedimentation rate(ESR),but not correlate with rheumatoid factor (RF)and the anti-cyclic citrullinated peptide(CCP)antibody.Conclusion The expression of toll-like recep- tor 2 in peripheral blood monocytes of patients with active RA is significantly increased.And the expression is correlated with disease activity index.The innate immune system is activated in patients with active disease. And the increased expression may promote the activities of monocytes.

OBJECTIVE: To explore the applicability of integration between three-dimensional (3D) facial and dental data to evaluate the nasolabial morphology variation before and after the cross-arch fixed restoration of the maxillary implant-supported prostheses. METHODS: Twelve patients (4 women and 8 men), mean age (54.82±5.50) years (from 45 to 62 years) referred to the Department of Oral Implan-tology, Peking University School and Hospital of Stomatology, were selected and diagnosed with edentulous maxilla. For all the patients, 4 to 6 implants were inserted into the maxilla. Six months later, the final cross-arch fixed prostheses were delivered. The 3D facial images were collected before and after the final restoration. The 3D data of prostheses were also captured. All the 3D data were registered and measured in the same coordinate system. Then the displacement of all the landmarks [cheilion left (CHL), cheilion right (CHR), crista philtri left (CPHL), crista philtri right (CPHR), labrale supe-rius (LS), subnasale (SN), stomion (STO), upper incisor (UI), upper flange border of the prostheses (F-point, F)], and the variation of the distances between these landmarks (SN-LS, CPHR-CPHL, CHR-CHL, LS-STO) were analyzed and compared. RESULTS: The consistency test among three measurements of the length of F-SN indicated that the integration method of the dental prostheses and soft tissue had the good repetitiveness, ICC=0.983 (95%CI: 0.957-0.995). After wearing the final cross-arch maxillary implant-supported prostheses, all the landmarks on the soft tissue moved forward. The nasal base area changed minimally, and the shift of SN in the sagittal direction was only (0.61±0.44) mm. But the sagittal shift of LS was (3.12±1.38) mm. In the vertical direction, SN, LS, CPHL, and CPHR moved upward. But STO, CHL, and CHR moved downward a little. Except for the slight decrease of the length of philtrum (SN-LS), the length of CHL-CHR, CPHL-CPHR, and the height of upper lip were increased together (P < 0.01). In the direction of Z axis, the strong correlations were found not only between the movements of SN and F (r=0.904 3) but also between the movements of LS and UI (r=0.958 4). CONCLUSION The integration method of 3D facial and dental data showed good repetitiveness. And the strong correlations between the landmarks of prostheses and nasolabial soft tissue in the sagittal direction were found by this new method.
Female ; Humans ; Incisor ; Lip ; Male ; Maxilla/surgery* ; Middle Aged ; Mouth, Edentulous ; Prostheses and Implants

OBJECTIVEThis study simulated clinical implant surgery using squeeze technique by establishing a rational animal model. To measure the morphologic parameters in order to observe the agglutination of the cancellous bone after being compressed. The study wanted to get some favourable support of implant squeeze technique in bone healing and obtaining primary stabilities of implants, so as to provide some reasonable and valid guidance in the application and improvement of implant squeeze technique.

METHODSThe cancellous bone in condyles of femur of dog had been chosen as the experimental position, prepared the implant holes using squeeze technique according to different compressing extent (0, 0.6, 1.2, 2.0 mm), and then inserted the corresponding implants into them. After different healing periods (1, 2, 4, 12 weeks), the mongrel dogs were sacrificed and the hard tissue slices were made and then the morphologic parameters were measured.

RESULTSThe morphologic parameter of the bone tissue shows that after being compressed, the trabecular bone thickness was almost constant, while the trabecular bone number increased, and the trabecular bone spacing decreased, obviously in the 1-week and 2-week groups. The differences went down gradually along with the extend of healing time.

CONCLUSIONThe clinical implant surgery using squeeze technique can improve peri-implant bone density so it is good for obtaining primary stabilities of implants.

U937 macrophages were cultured with various concentrations of glucose and/or insulin for 24 h.Cell membrane scavenger receptor(SR)-BⅠprotein and mRNA were detected by Western blot and RT-PCR. The results showed that basal physiological insulin levels promoted SR-BⅠprotein expression of macrophages and high concentration of insulin significantly downregulated SR-BⅠ,but the transcription of SR-BⅠmRNA did not change.High glucose and high insulin accelerates atherosclerosis through synergetically downregulating SR-BⅠprotein expression,which may cause early onset and rapid progression of atherosclerosis in the patients with metabolic syndrome and type 2 diabetes mellitus.

OBJECTIVETo investigate the hard and soft tissue changes following the treatment of Class II division 1 malocclusion using Twin-block appliance.

METHODS50 Class II division 1 malocclusion subjects whose handwrist radiographs were in FG-G stage were selected. One group (27 patients) was treated with Twin-block appliance, the other group (23 patients) was observed without treatment The acquired data of cephalometric of two groups were analyzed statistically with SPSS 11.0.

RESULTSSoft tissue changes, Ls-E, Li-E, U1-Stms, Stms-Stmi, NsLs-FH, LsNsLi, LsNsPg', the angle of H decreased. Sn-Stms, Stmi-Me', Ns-Me', Sn-Me', NsLi-FH, NsPg'-FH, A'Ls-FH, B'Li-FH, LiB' Pg', CmSnLs, GSnPg', the angle of Z increased, there was statistically significant difference (P < 0.05). Hard tissue changes, SNB, L1-NB, IMPA increased, ANB, U1-SN, U1-NA, FMIA decreased, there was statistically significant difference (P < 0.05).

CONCLUSIONSagittal relationship between upper- and lower-jaws is effectively improved after orthopedics with Twin-block appliance. Lower face height increases. Soft tissue profile tends to be straight-styled.

Objective To compare the clinical effect of 2D and 3D laparoscopic radical prostectomy and summarize surgical experience of laparoscopic radical prostectomy of early prostate cancer.MethodsThe clinical data of 34 cases of prostate cancer treated in our institute from November 2015 to April 2016 were collected and analyzed retrospectively. The patients in observation group (11 cases) were treated by 3D laparoscopic radical prostectomy, while those in control group (23 cases) were given 2D laparoscopic radical prostectomy. The operation time, intraoperative bleeding volume, postoperative drainage time, quantity of drainage fluid within 24 hours postoperatively, indwelling catheter time, hospital time, positive surgical margin rate, potence rate, 30d-urinary continence rate and complications were compared between the two groups.Results All operations were successfully performed. There were no signiifcant differences in operation time, intraoperative bleeding volume, postoperative drainage time, quantity of drainage lfuid within 24 hours postoperatively, indwelling catheter time, hospital time, positive surgical margin rate, potence rate, 30d-urinary continence rate and complications between the two groups (P > 0.05). In observation group, the operation time was (153.52 ± 30.47) min and the potence rate was 50.0 %, 4 cases with uroclepsia (36.4 %), 1 case with urine leakage (9.1 %), no patient had urethral stricture or positive surgical margin, the 30d-urinary continence rate was 72.7 %. In control group, the operation time was (164.73 ± 28.65) min and the potence rate was 38.9 %, 13 cases with uroclepsia (56.5 %), 4 cases with urine leakage (17.4 %), 1 case with urethral stricture (4.3 %), 2 cases with positive surgical margin (8.7 %), 30d-urinary continence rate was 60.9 %.ConclusionLaparoscopic radical prostectomy is a safe, effective and less invasive method for treating early prostate cancer patients. Also 3D laparoscopic radical prostectomy play the similar functional results compared with 2D laparoscopic radical prostectomy, but 3D laparoscopic has the advantage in three dimensions space sense and accurate operation, it is worthy of promoting clinical application.

Objective To establish the animal model for the study of children with moderate blood lead levels in young rabbits,for the study of the ideal therapy for moderate lead poisoning in children.Methods Sixteen 45-day-old male New Zealand rabbits were randomly divided into control and lead-exposed group,8 in each group.Rabbits in the lead-exposed group were treated with 5 mg/(kg?d)lead acetate in their forage for 6 weeks to establish moderate lead poisoning animal model.The blood lead levels(BLLs)were determined by atomic absorption spectrometer(AAS),and the urine lead levels and the lead concentrations of tissue and organ were determined by inductively coupled plasma-mass spectrometry(ICP-MS).Histopathology in tissue and organ was observed under the light microscope.Results The BLLs and the urine lead levels in lead-exposed group step up rapidly in primal weeks,then retained at a steady levels.The BLLs exhibited moderate level BLLs during the lead exposure period.Compared with control group,the body weight gain,testis and hippocampus wet coefficient of the lead-exposed group significantly decreased(P_a