Adipocyte derives from multipotential stem cell.During the course of differentiation, it covers multipotential stem cell,adipoblast,preadipocyte,immature adipose cell,adipocyte.Each stage has its singular cellular phenotype and specific molecular marker.This article is aimed to review the advance research of this aspect.

Objective To investigate the changes of drug resistance and class Ⅰ integron in clinically isolated Pseudomonas aeruginosa(PA) in our hospital form January 2013 to December 2015.Methods Clinically isolated PA strains were divided into the 3 time periods of 2013,2014 and 2015.Their resistance to 22 commonly used antibacterial drugs was investigated by adopting the VITEK-2;200 strains were randomly selected from the isolated strains during these 3 time periods.Class Ⅰ integron was detect by PCR.Results The detected PA in these 3 time periods had 366,437 and 520 strains respectively.The drug resistance of Pseudomonas aeruginosa to 22 commonly used antibacterial drugs was remarkably increased(P<0.05),especially in ICU.The detection rate of class Ⅰ integron positive bacteria was gradually increased year by year,moreover the drug resistance rate of class Ⅰ integron positive bacteria was significantly higher than that of class Ⅰ integron negative bacteria (P<0.01).Conclusion The drug resistance rate of PA in this hospital is higher.The proportions of multi-drug resistance and classⅠ integron are significantly increased.The hospital infection detection and drug-resistant bacterial monitoring should be strengthened to further standardize the use of antibacterial drugs.

Objective To investigate the application of the mini nutritional assessment (MNA)in the malnutrition risk eval-uation of elderly inpatients with cardiovascular disease(CVD).Methods The MNA method was adopted to detect the MNA scores in 316 elderly inpatients with CVD.The inpatient′s nutritional status was evaluated according to the MNA scores.Results Among 316 cases,52 cases(16.46%)were malnutrition,60 cases (18.99%)had the malnutrition risk and 204 cases (64.56%)were in a good nutritional status;the occurrence rate of malnutrition and malnutrition risk in the female elderly patients were higher than those in the male patients,the differences were statistically significant(P <0.01);the occurrence rate of malnutrition and malnutri-tion risk in the elderly inpatients(≥80 years old)were higher than those in the low age patients(60~<80 years old),but the differ-ences had no statistical significance(P >0.05);the occurrence rate of malnutrition and malnutrition risk in the rural patients were higher than those in the patients lived in city,the differences were statistically significant(P <0.05).Conclusion Elderly inpatients with CVD have the higher prevalence of the malnutrition risk,the MNA can be applied in elderly inpatients with CVD for conduc-ting the nutritional status monitoring and early screening the malnutrition risk.

Objective To review the study of noninvasive imaging methods for evaluating liver fibrosis.Meth- ods The current literatures on the use of the ultrasonography,CT and MRI for the evaluation of liver fibrosis were reviewed.The principles,applications and advancement of each imaging methods were described and summarized re- spectively.The features of the newly developed imaging techniques were also discussed.Results In addition to the morphologic information,the imaging examinations can also provide functional information about the circulation sta- tus,diffusion and metabolism features of liver.The potential diagnostic value of MR elastography for liver fibrosis has been addressed.Conclusion The imaging examinations,especially the functional MRI techniques,are reliable noninvasive alternatives for the evaluation of hepatic fibrosis,with bright potentiality for clinical application.

Objective To evaluate the efficacy and adverse effects of docetaxel combined with 5-fluorouracil in treating patients with advanced gastrice cancer.Methods 130 patients with advanced gastric cancer were randomly divided into observation group and control group,observation group treated with docetaxel combined with 5-fluorouracil,the control group treated with 5-fluorouracil and cisplatin,the clinical efficacy after the treatment was observed.Results The clinical efficiency rate of the observation group was significantly higher than that of the control group,the rate of leukopenia,thrombocytopenia and gastrointestinal reactions of the observation group was significantly lower than the control group,the quality of life scores of the two groups after treatment were all improved,but that of the observation group was significantly higher than the control group,the difference was statistically significant(P ＜ 0.05).Conclusion Docetaxel combined with 5-fluorouracil was effective in treating advanced gastric cancer.It worth further clinical research and application.

Objective To summarize the characteristic findings on chest radiography and spiral CT of anomalous systemic arterial supply to normal basal segments of the left lower lobe of the lung.Methods Five patients with anomalous systemic arterial supply to normal basal segments of the left lower lobe of the lung were retrospectively reviewed.Chest radiography,and contrast-enhanced spiral CT scan were analyzed. Results On posteroanterior chest radiographs,the findings in 5 cases of this anomaly were all shown as a retrocardiac mass,narrowing lower lobar pulmonary artery shadow,and without normal lower lobar pulmonary artery branches but there were dilated abnormal markings in left lower lung zone.On contrast- enhanced spiral CT scans,the involved left lower lobe of the lung had mild volume loss but normal bronchial trees in all 5 cases and areas of ground-glass opacity in 2 cases.The absence of normal left lower lobar pulmonary artery distal to the origin of superior segmental artery,anomalous systemic artery originating from the descending aorta,diffuse dilatation of the systemic arterial branches distributed in the basal segments of the left lower lobe were also found in all the patients.One patient who underwent angiography had similar vessel features with spiral CT.Conclusion There are some characteristic findings on chest radiography in this anomaly.the contrast-enhanced spiral CT scans are important in diagnosing and avoiding invasive angiography and life-threatening lung biopsy.

Objective To analyze the mechanism of nasal deformity by reviewing the possible pathogenesis and nasal anatomy and to find the effective and reliable operative methods to correct nasal deformities in unilateral cleft lip.Methods 57 patients (37 males,20 females,and range in age from 12 to 25 years,with mean of 18.6 years) with nasal deformities in unilateral cleft lip were available for this study.The nasal deformities were treated with the following surgical procedures according to the different locations and degree Of nasal deformities.The eompositive techniques included:alveolar bone grafting was taken to correct the collapse the nasaI base;a cortical plate was inserted between the two medial crura of the alar cartilage.According to the nasal contours of non-cleft side,the alar cartilage was resected and suspended to its normal and symmetrical position.The alar cartilaginous ring was reconstruction,which maintained the nostril shape 3 month postoperatively.Results A total of 57 cases were treated by the method above,and were ranged with score by operators and patients.93% of cases were evaluated as satisfaction after operation.The follow-up for 3 to 24 months showed that 52 cases had achieved satisfactory effects,5 cases showed the trend to relapse.Conclusion The cause of nasal deformities in unilateral cleft lip is complex.The study has achieved a significant improvement by synthetical correction of deformities of maxilla,cartilage and soft tissues, and the restoration of nasal-labial muscles.The rigid suspending is more important to maintain the nostril contour and avoid relapse.

Objective To study CT features of thymoma,so that to improve the accuracy of CT diagnosis and differential diagnosis.Methods 31 cases of thymomas proved by surgery and pathology were examined with conventional CT scans.CT findings of thymoma were analyzed.Results The lesions in 27 cases(87.1%)were located in the anterior upper and middle mediastinum.There were benign lesion in 11,including mass-cardiovascular interface(MCI) with convex type(8 cases),flatness type(1 cases) and concave type(2 cases).20 cases were malignant lesion,including MCI with cast type(18 cases) and concave type(2 cases).Irregular invasion to adjacent organs was found in 11 cases,others included pericardiac effusion(n=6),pericardial and mediastinal invasion(n=2),pleural effusion(n=4),pneumonia(n=2),lung,bone,mediastinal lymphadens metastasis(n=2) and liver,pancreas metastasis(n=1).Conclusion CT scans is of significant value in diagnosis and differential diagnosis of thymoma.

Objective To study the influence of high-fluoride on thyroid function and brain damage. Methods Thirty-six Wistar rats were randondy divided, according to weight and gender into 3 groups(12 rats each), i.e. control group, high fluoride group, and high fluoride plus thyroid tablet treatment group. The rats were fed with normal tap water containing no more than 5 mg/L NaF and the tap water added 100,100 mg/L NaF, respectively. After 7 months of experiment, the rats in high fluoride plus thyroid tablet treatment group were given with 0.04% thyroid tablet( 1.8 ml·kg~(-1)·d~(-1)) by gastric perfusion for three weeks. The contents of TT_3 and TT_4 in serum were detected by radio-immunological assay; the histomorphology in thyroids and brains were observed under microscopy; and the protein level of NMDAR2B subunit of glutamate receptor in the hippocampal CA1 and CA3 was measured by immunohistochemistry. Results As compared to the values of TT_3 and TT_4 in serum of rats in control group[ (0.97 ± 0.15), (84.03 ± 12.45)nmol/L], TT_3 and TT_4 in high fluoride group were obviously lower [(0.24 ± 0.07), (15.16 ± 2.08)nmol/L, all P < 0.01]; while no changes in TT_3 and TT_4 were detected in high fluoride plus thyroid tablet treatment group[ (1.02 ± 0.19), (85.63 ± 9.55)nmol/L, all P < 0.05] as compared to controls, but higher than those in high fluoride group(all P < 0.01 ). The pathological changes including partial hyperplasy, arrangement disorder, atrophy, and decreased colloid of the thyroid follicular epithelial cells in high fluoride group were observed under microscopy. In high fluoride plus thyroid tablet treatment group, the degree of the thyroid cellular hyperplasy was relatively slight as compared to high fluoride group. The swelling and disarrangement of neurons in the hippocampus were observed in high fluoride group, whereas the changes of the neurons were not so obvious in high fluoride plus thyroid tablet treatment group. The grey values of NMDAR2B positive cells in the hippocampal CA1 and CA3 in high fluoride group(167.05 ± 7.31 ) were significantly increased as compared to controls (92.53 ± 9.67 ) or high fluoride plus thyroid tablet treatment group( 101.66 ± 12.21, all P < 0.01 ). Conclusions High fluoride can induce the decreased function and changed histomorphology in thyroid and result in pathological damages in the brains of rats. However, treated with thyroid tablet to those having damages induced by high fluoride, the thyroid function and morphology can be normal, and the brain damages can be alleviated. The results indicate that hypothyroidism caused by high fluoride might be an important participating factor in brain damages caused by fluorosis.

0.1), there is not significant difference between them. Comparing with blood method, the sensitivity and specificity of urine method are 94 .1 % and 91. 6 % respectively.Conclusions To determine the B-gal and U-gal, O-toluidine method can be regarded as an indirect diagnostic method of LD.