CBX protein(chromoboxin protein homolog)is an important member of PcG(polycombe group proteins)family protein,and PcG protein is an epigenetic regulatory complex that exists in the form of polymeric transcriptional inhibitory complexes PRCs.PcG protein can modify the target gene to transcript chromatin and plays an important role in stem cell differentiation and tumorigenesis and metastasis.The CBX protein family is an important member of the classic PRC1.Recent studies have focused on the different functions of CBX in stem cells,further demonstrating the composition and function of CBX.From more evidence,CBX plays an important role in tumorigenesis and development.This review summarizes the current advances in the study of CBX family members in tumors.

Objective:To compare the morphology of dental arch and base bone between oral breathing and nasal breathing children.Methods: A simultaneous measurement system was applied to test oral and nasal respiration.34 oral breathing children and 34 nasal breathing children aged 11 to 14 years old were selected.The parameters of the morphology of dental arch a nd base bone were measured on the record models.Results:① The oral breathing children showed higher palatal vault,and narrower maxillary b ase bone.The configurations of maxillary base bone were comparatively narrower a nd longer.②The oral breathing children's medial and posterior parts of arches o f maxilla were longer,and the configurations of maxillary arch were comparativel y narrower and longer.The configurations of mandible posterior arch were compara tively narrower and longer too.Conclusion:Oral breathing m ay lead to morphological changes in dental arch and base bone in children.

OBJECTIVE:To observe the clinical efficacy of Xuebijing injection in the treatment of severe acute pancreatitis(SAP).METHODS:65 patients with severe acute pancreatitis were enrolled:30 patients in the control group were randomly as-signed to receive standard combined therapy of west medicines,and 35 in the treatment group to receive Xuebijing injection 100 mL qd by iv gtt plus the combined therapy as in the control group.The course of treatment in both groups was 7 days.RESUL-TS:The total efficiency in the treatment group was 94.3% and that in the control group was 83.4%,showing significant differences between the two groups(P

砄bjective: To study the relationship between respiratiory mode and dental occlusion. Methods: UI SN, LI MP, UI LI, OB, OJ and M1～M2 were measured with cephalometric technic in 34 oral breathing children and 34 nasal breathing children (aged 11～14 years) . Results: UI LT and OB in the children with oral breathing were smaller than those in the children with nasal breathing( P 0.05). Conclusion: The children with oral breathing may have smaller oberbite and more proclined dental arch.

BACKGROUND:COX-2 gene actual y exists in the joint fibroblast-like synoviocytes, it affects osteoarthritis occurrence and development. Understanding the differences of COX-2 gene expression levels at different stages of osteoarthritis synoviocytes has important theoretical significance for the occurrence and development of osteoarthritis, as wel as the role of synoviocytes in this process.
OBJECTIVE:To analyze the difference of COX-2 mRNA at different stages of osteoarthritis fibroblast-like synoviocytes.
METHODS:Synovial membrane from 44 osteoarthritis patients and 12 normal cases were selected. Primary cells were cultured to passage 4 fibroblast-like synoviocytes for the use in the experiment. COX-2 mRNA expression in osteoarthritis fibroblast-like synoviocytes and normal fibroblast-like synoviocytes was detected using real-time fluorescence quantitative RT-PCR. The relative quantitative analysis was performed using 2-ΔΔCt method.
RESULTS AND CONCLUSION:Expression of COX-2 mRNA in osteoarthritis fibroblast-like synoviocytes was significantly higher than that in normal fibroblast-like synoviocytes (P<0.05). The expression levels reached a peak at early osteoarthritis group, with significant differences compared with middle and late osteoarthritis groups (P<0.05). There was no significant difference between middle and later osteoarthritis groups (P>0.05). COX-2 mRNA might be important biological marker for the inflammation in osteoarthritis, and mainly plays a role in early osteoarthritis stage.

Objective To evaluate the psychological intervention ettectiveness ot socioenvironmental therapyfor heroin addicts accepting compulsory isolation.Methods Totally 100 male heroin addicts accepting compulsory isolation and Labour Camp Rehabilitation were selected and randomly assigned to socioenvironmental therapeutic group (ST group,50 cases) and control group (CT group,50 cases).A two-month socioenvironmental therapy was selectively proceeding in ST group by a same psychological team,while CT group still received conventional rehabilitation.During the 6-month follow-up,self-rating anxiety scale(SAS),self-rating depression scal (SDS) and self-made questionnaires were used every 3 months,to statistically estimate psychological status of subjects.Results Before treatment,no statistically significant difference between the two groups;after treatment,SDS score of CT group was 56.16 ± 9.12,and was lower than that in ST group(48.28-± 9.55) (P ＜ 0.01) ; SAS score of ST group was 46.28 ± 7.78,and was lower than that in CT group (50.72 ± 8.32) (P ＜ 0.01).In the 3-month follow-up evaluation,depression,anxiety scores in CT and ST group were significantly lower,the difference was statistically significant (P ＜ 0.01) ; 6 months after treatment,depression,anxiety score showed was significant difference between two groups(P＜ 0.01).Conclusion Group psychotherapy especially socioenvironmental therapy is quick and long-acting in improving the psychological status of heroin addicts in aspects of depression and anxiety levels,which is distinctly evidenced by the short-term and long-term curative results.

Objective To investigate the current knowledge and attitudes towards people living with HIV/AIDS (PWHAs) in Chinese registered nurses (RNs) and describe the relationships between the nurses' HIV/AIDS related knowledge and attitudes towards PWHAs. Methods A cohort of 1350 RNs from 51 comprehensive hospitals in Hunan, China were studied over a 4-month period. A 3-stage random sampling method was used. Results The total correct rate in AIDS Knowledge Scale was 63.2%. Most nurses were good at conceptions of routes of AIDS infection and some basic characteristics, with more than 80% of the correct responses rate of relevant items. Their weakness was in the knowledge of some activities which would not transfer AIDS, such as "eating in a restaurant where the cook has AIDS may infect HIV", with less than 50% of the correct response rate of relevant items. As for attitudes, 94% of the nurses sympathized with HIV patients. About 82.7% of the nurses showed little sympathy to patients getting HIV by sexual promiscuity. Among all the AIDS related knowledge, nurses' conception of non-infectious activities was significantly related to their attitudes to HIV/AIDS.Conclusion Chinese nurses waster well about HIV/AIDS basic characteristics and the routes of infection, and most nurses sympathize with PWHAs. Their weakness is in the knowledge of non-HIV-infectious activities and they hold different attitudes to those patients getting HIV/AIDS in different ways. There are some barriers for Chinese nurses to take care of all patients equally. Professional development programs are urgently needed to remedy this situation including clarifying the nurses' misconceptions on AIDS related knowledge, developing non-judgmental professional attitudes, and using universal prevention measures when they take care of all patients.

Objective To observe the changes of osteoblasts and vascularization during osteogenesis by tissue engineering technique under the electron microscope and study the feasibility of improving vascularization of the tissue engineering bone by using the small intestine submucosa(SIS) as the scaffold. Methods The bone mesenchymal stem cells(BMSCs) were isolated by using the gradient centrifuge method.BMSCs were seeded in the SIS.The scaffold-cell constructs were cultured in vitro for two weeks.There were no cells on the SIS as control.They were implanted subcutaneously in the dorsa of the athymic mice.The implants were harvested after(in vivo) incubation for 4,8 and 12 weeks.The changes of osteoblasts and vascularization were observed under the transmission electron microscope and the scanning electron microscope. Results The BMSCs grew quite well.BMSCs differentiated on the surface of the SIS and secreted a great deal of extracellular matrices.The scaffold-cell constructs formed a lot of bone and vessels in vivo.The scaffold degraded after 12 weeks.No osteoblasts but vascularization and fibroblasts were observed as control. Conclusion SIS can be used as the scaffold for constructing tissue engineering bone as it can improve the formation of bone and vessels in vivo.

Objective To evaluate the clinical value of artificial hydrothorax combined with one-lung ventilation to aid ablation treatment of liver carcinoma in the hepatic dome.Methods Twenty-one patients with liver carcinoma located in the hepatic dome and affected by the lung gas were enrolled.Double lumen endobronchial intubation anesthesia was used and thoracical tube was used to apply artificial pleural effusion.The lesions'ultrasound image were recorded for the patients without artificial hydrothorax,or with artificial hydrothorax only and artificial hydrothorax combined with one-lung ventilation.Ultrasound images were reviewed and scored as 1-5 according to the clarity and completeness of the lesion.Ablation efficacy and adverse reactions were recorded in the follow-up.Results Twenty-one patients were successfully applied artificial hydrothorax and one lung ventilation.The average normal saline used for artificial hydrothorax were (738± 260)ml.The ultrasound score for not using artificial hydrothorax,using artificial hydrothorax only and artificial hydrothorax combined with one lung ventilation were 1.13 ± 0.35 (1-2),3.00 ± 0.85 (2-5) and 4.53 ± 0.64(3-5),respectively,statistical difference was found between each method(P ＜0.05).Artificial hydrothorax combined with one-lung ventilation had much higher ultrasound score than the other 2 methods.No complication related to artificial hydrothorax or one-lung ventilation was found.CT/MRI at one month after ablation showed that all the lesions were completely ablated.In the follow-up for 2-14 months on average,1 case of local tumor progression and 1 case of intrahapetic relapse were found.Conclusions Artificial hydrothorax combine one-lung ventilation could effectively enhance ultrasound image for the lesions in the dome whose acoustic window was affected by lung gas.