Objective To research the indoor air pollution in offices induced by decoration and its health effects. Methods According to the completed time, the offices were divided into 6 groups (2 month group, 2-4 month group, 5-8 month group, 9-11 month group, 12-18 month group, over 5 year group). The concentration of indoor air pollutants was determined and 617 people from the decorated offices were randomly selected to finish the questionnaires on health. Results The over standard rate of formaldehyde, benzene and ammonia in indoor air was the highest in 2 month group, 100%, 87.3%, 83.9% respectively. The concentration of indoor air pollutants decreased as the time went on, about one year after decoration, the concentrations were lower than the standard limits (GB/T 18883-2002). The adverse response rate of the staff members in offices decorated group (76.4%) was significantly higher than that in the control group (30.9%) (P

Objective To study the etiology,clinical features,treatment of geriatric depression.Methods A total 78 patients aged over 60 years who had their first depression attack were studied.All the clinical data which included the etiology,family history,clinical features and treatments were obtained from our hospital.Results These patients had anxiety,physical complaints,cognitive disorder as well as gloom,thinking paucity,loss of interest and low self-esteem.Socio-psychological factors and somatic diseases had significant effect on it;few patients had positive family history.Conclusion Geriatric depression has not only the clinical featrues of CCMD-3 but also the clinical features of anxiety,hypocondrtasis,physical complaints and cognitive disorder.

Objective:To preliminarily explore the synthesis of a quercetin derivative 3′,4′,5,7-four-(O-methoxy carbonyl meth-yl) quercetin and its pharmacological activities. Methods:Quercetin as the reactant and N,N-dimethyl-formamide ( DMF) as the sol-vent, the target product 3′,4′,5,7-four-(O-methoxy carbonyl methyl) quercetin was obtained by the slow addition of methyl chloroace-tate in the presence of anhydrous K2 CO3 to introduce ether bond at 3′,4′,5,7- bit. The structure was characterized by LC-MS, 1 H-NMR and element analysis. The nanoemulsion of the product was prepared using a film dispersion method, and with intraperitoneal in-jection, the effect on pituitrin-induced myocardial ischemia cardiovascular system in rats was observed. Results:3′,4′,5,7-Four-(O-methoxy carbonyl methyl) quercetin was successfully synthesized, and could be metastasized to a demethylation product containing dis-tal free carboxyl with increased polarity proved by metabolic tests in vitro. The results of electrocardiogram and animal experiments showed that the compound had improving effects on pituitrin-induced myocardial ischemia in rats. Conclusion: The nanoemulsion of 3′,4′,5,7-four-(O-methoxy carbonyl methyl) quercetin with intraperitoneal injection shows significant antagonism against pituitrin-in-duced myocardial ischemia in rats.

Objective To summarize the experience in diagnosis and management for the space occupying lesion of spleen. Method The clinical data of 29 cases treated by surgery were retrospectively analyzed. Results There were 15 patients with benign masses including 7 hamartomas, 5 hemangiomas, 1 pseudocyst, 2 tuberculoses of the spleen, and 14 with malignant tumors including 9 lymphomas, 3 angiosarcomas, 2 metastatic tumors in the spleen. Splenectomy was performed in all patients. All patients with benign masses survived except 2 patients lost follow up and 1 coexisting with hepataocellular carcinoma died half a year after the operation. Twelve of 14 patients with malignant tumor were followed up.Of them, 5 patients survived more than 5 years and 2 were alive 1 and 3 years after the operation respectively; 5 patients died 6 months to 4 years after the operation. Conclusions Ultrasonography and CT or MRI are the main means of diagnosis for the space occupying lesion of spleen.It is difficalt to make diagnosis of the splenic tuberculosis before operation.Splenectomy is a primary procedure of surgery.

Objective:To explore the influence of buccal corridor of Han people on smile esthetics.Methods:An attractive adult male and a adult female were selected as the models.Buccal corridor was altered digitally with slider technology of Adobe Flash CS4 to obtain a continuous range of buccal corridors(0% -25%).96 orthodontists aged 35.1 ±7.2 years and 96 laypersons aged 37.3 ± 5.1 years were chosen as the raters.The minimum tolerable value(A%),the ideal value(B%)and the maximum tolerable value (C%)of buccal corridor of the models were statistically analyzed.Results:In the orthodontist groupA,B and C of the male model were 5.00 ±0.1 7,9.75 ±2.77 and 1 5.00 ±2.84,in layperson group were 4.79 ±1 .00,9.20 ±3.08 and 1 5.05 ±2.91 ,respec-tively;in orthodontist group,A,B and C of the female model were 3.92 ±0.1 7,1 1 .87 ±2.77 and 1 5.82 ±2.84,in layperson group were 4.00 ±1 .00,1 2.05 ±3.08 and 1 5.1 1 ±2.91 ,respectively(all data between groups,P >0.05).The ideal buccal corri-dor value(%)of the male and female models were 9.48 ±2.73 and 1 1 .96 ±1 .99 respectively(P <0.05).Conclusion:There is no difference between orthodontists and laypersons for buccal corridor esthetic judgment.The ideal esthetic buccal corridor size of male and female is different.

Objective:To analyze the dental and mandibular asymmetry of adults with Class Ⅱ subdivision malocclusion.Methods:The jaw bones of 30 adults with Class Ⅱ subdivision malocclusion(case group)and 30 with normal-occlusion(control group)were scanned by CBCT.Linear and angular comparison was conducted between the two groups.Results:Dental midline deviation was ob-served in case group,mostly in mandibular arch (60%).The development of Class Ⅱ molar relationship correlated mainly to distally positioned mandibular molar on Class Ⅱ side.Conclusion:In the adults with Class Ⅱ subdvision malocclusion odontogenic asymme-try is the major factor,bony asymmetry is the miner.

Objective:To analyse the asymmetry of mandibular of adults with skeletal classⅢmalocclusion and mandibular deviation using cone-beam computerized tomography(CBCT).Methods:20 adults with skeletal classⅢmalocclusion and mandibular deviation (deviation group)and 20 adults with individual normal occlusion(normal group)were included.CBCT slices were taken for each sub-ject.INVIVO 5 software was used to make 3D reconstruction and location marks for line distance and volume measurements of mandi-ble and condyle.Results:The measurements of the mandibular ramus length,mandibular total length,hemi-mandibular volume, mandibular ramus volume,posterior part of mandibular body length,condylar unit length,angular unit length,body unit length and an-gular angle in deviation group were significantly different between 2 sides(P<0.05).Compared with the normal group,differences of the asymmetry of mandibular ramus length,mandibular total length,hemi-mandibular volume,mandibular ramus volume,posterior part of mandibular body length,angular angle,condylar unit length and body unit length between 2 sides in deviation group were sig-nificantly different(P<0.05).Conclusion:In adults with skeletal classⅢmalocclusion and mandibular deviation deviated condylar and mandibular ramus are smaller than those of the nondeviated;the posterior part of mandibular body is slightly asymmetric while the anterior part of mandibular body is almost symmetric.

Objective To investigate the clinicopathologic features and treatment of thyroid microcarcinoma (TMC). Methods From January 1997 to December 2006,311 patients who underwent surgery and defined as TMC(tumor size≤1 cm)were enrolled. Results TMC was identified incidentally by frozen pathologic examination on thyroidectomy specimens in tentative benign goiters in 181 patients; another 130 patients with clinically detectable primary tumors or suspected nodal metastases were grouped to as clinically overt TMC. The clinically overt TMC had a higher incidence of bilateral multifocal tumors (18.5%vs.9.4%,P=0.03),and cervical lymph node metastases(27.7%vs.10.5%,P=0.000)than that in clinically occult TMC group. Conclusion TMC may vary considerably in clinical and biologic behaviors between these two subtypes: clinically overt and occult. Lobectomy for single lesion, total or near total thyroidectomy for multifocal with central compartment nodal dissection should be performed, lateral nodal dissection was not carried out unless US or physical examination detected nodal metastases. Lobetomy, subtotal or more limited thyroidectomy for occult TMC, diagnosed incidentally following thyroid surgery for initially tentative benign thyroid disease, could all be treatment of choice depending on the preference of surgeons.

BACKGROUND:Hepatocyte transplantation has attracted more and more attention as a therapeutic measure for liver failure and genetic metabolic liver diseases.OBJECTIVE:TO evaluate the efficacy and safety of human hepatocyte transplantation in treating hepatitis B related liver failure in one case by a 2-year follow-up.DESIGN:A case-report of 2-year follow-up.SETTING:No.9 Department of Infectious Diseases,Bioengineering Research Room,the 302 Hospital of Chinese PLA.PARTICI PANT:One inpatient with hepatitis B related liver failure was selected from the 302 Hospital of Chinese PLA.and she was diagnosed according the laboratory tests.The transplanted hepatocytes were originated frOm the healthy liver of a 24-year-old man,who had signed the protocol for liver donation before death.METHODS:The hepatocyte transplantation was completed in the Department of Radiology,the 302 Hospital of Chinese PLA in December 2004.Liver was isolated to obtain human primary hepatocytes, and then cryopreserved.The hepatocytes were transplanted into recipient spleen via femoral vein after resuscitation.The clinical symptoms,changes of blood biochemical indexes,and changes of spleen MRI signals were observed before and after operation.The patient was reexamined every half a year after operation, including liver function, blood coagulation function,B-mode ultrasonography,gastroscopy and MRI,and she was followed up for 2 years. MAIN OUTCOME MEASURES:Liver function,blood coagulation function, imaging indexes, immunological indexes,complication and rejection.RESULTS:①Totally(1-2)×1010 hepatocytes were harvested,and the viability of rewarmed hepatocytes was 60%,and finally 2×109 hepatocytes were transplanted.②Two months later,the clinical symptoms of the recipient were obviously ameliorated,and serum bilirubin and aspartate aminotransferase(AST)were obviously decreased,while prothrombin activity was markedly increased.20 months later,the MRI results showed that there was hepatocyte image in spleen.Two years after operation.the total bilirubin level was 20 μmol/L,direct bilirubin level was 7 μmol/L, alanine aminotransferase was 416.75 nkat/L,AST was 533.44 nkat/L,albumin was 37 g/L,prothrombin activity was 90%,which were all obviously ameliorated as compared with those before operation(474.5 μmol/L,340.3 μmol/L,400.08 nkat/L,1 200.24 nkat/L,38 g/L,25%).The patient left the hospital 2 months later and could do light-burdened job.No complications of hydroperitonia and liver function failure, etc.were observed,and no rejection occurred.Several reexaminations by B-mode ultrasonography all indicated the further aggravations of liver cirrhosis and esophageal varices.She was admitted to hospital for twice because of esophageal varices bleeding,and cured by endoscopic variceal sclerosis therapy.CONCLUSION:Hepatocyte transplantation can ameliorate liver function without rejection,but it cannot relieve portal hypertension.

Macular edema secondary to retinal vein occlusion (RVO) is the leading cause of visual impairment in patients with RVO.Intravitreal injection of anti-vascular endothelial growth factor (VEGF) agents is the first-line treatment for RVO and most of patients can obtain improvements of macular morphology and visual function.Optical coherence tomography (OCT) can clearly characterize the macular microstructure.Qualitative or quantitative analysis of histological retinal layers of the macula, before and after anti-VEGF treatment, can guide the clinical treatment and predict visual outcome of patients with RVO.OCT predictors of visual prognosis in patients with RVO following anti-VEGF treatment, including central retinal thickness, disruption of external limiting membrane and ellipsoid zone, hyperreflective foci, disorganization of the retinal inner layers, serous retinal detachment or intraretinal cystoid spaces, subretinal hemorrhage, vitreomacular adhesion and retinal pigment epithelium (RPE) integrity are focused on in this review, aiming to enhance patient counseling and improve risk assessment and advance clinical management.