Since 1970's , lots of studies on biodegradation of chloroanilines (CAS) have been done, especially, in these aspects: spieces and capability of the microbes; metabolic pathway; gene cloning, expression of degradation plas-mid and pivotal metabolic emzymes. It is necessary for us to review the study on biodegradation of chloroanilines in order to summarize some useful results and the problems in this study.

Objective:To learn the effect of personality in the course of cognitive decline.Methods:106 aged people from two districts were selected randomly.Arithmetic,digit span,picture filling,block patterns,digit symbol,visual attention span,spatial reasoning were used to learn the cognitive ability,“Kartaier's 16 personality factors test”were used to explore the personality of aged people.Results:16 personality factors test shows that old people are more deferential and self-assured.The relation between reasoning and arithmetic,rule-consciousness and arithmetic,abstractedness and digit span,reasoning and block design,dominance and digit symbol,sensitivity and special reasoning,apprehension and visual attention span,openness to change and visual attention span reach the statistical significance.Conclusion:Age is the most important reason to the cognitive impairment in aged people, education can prevent the cognitive impairment in a large degree.Personality can affect the cognitive ability although different personality factor affect different cognitive fields.

One hundred and sixteen patients with lower limb fracture were screened by Doppler ultrasound for deep vein thrombosis(DVT) of bilateral lower extremities within the first 72 h, d7 and d21 after fracture. Results showed that DVT was detected in 31 (26. 7% ) out of 116 cases within 72 h; at d7 and d21 DVT was detected in 3 and 1 patient respectively with a cumulated DVT rate of 30. 2% in 3 weeks.Serial Doppler ultrasonography is of value in screening for DVT of the lower extremities in patients with lower limb fracture at early stage.

Objective: This study aims to investigate the correlation between the expression of FoxP3, TGF-β1, and epitheli-al-mesenchymal transition (EMT) in breast cancer and to determine the clinical significance of FoxP3. Methods: The expression of FoxP3, TGF-β1, E-Cadherin, N-Cadherin, Vimentin, and Fibronectin protein were detected in the cancer cells of 74 cases with breast carcinoma via immunohistochemistry. The correlation of FoxP3 protein with clinico-pathologic features of breast carcinoma and the re-lationships among the expressions of FoxP3, TGF-β1, and epithelial-mesenchymal transition (EMT) were analyzed. Results:The ex-pression rates of FoxP3, TGF-β1, and EMT are 36.5%(27/74), 39.2%(29/74), and 40.5%(30/74), respectively. The FoxP3 protein ex-pression in breast cancer is correlated with lymph node metastasis (P<0.05) but not with other clinico-pathological features (P>0.05). The expression of FoxP3 is also correlated with the expression of TGF-β1. Furthermore, TGF-β1 can induce EMT (P<0.05). Conclu-sion:The expression of FoxP3 is correlated with lymph node metastasis and EMT in breast cancer. Therefore, FoxP3 may be a marker for predicting metastasis.

ObjectiveTo establish a method to induce heterotopic ossification (HO) after spinal cord injury. Methods10 New Zealand White rabbits underwent a complete transection of the thoracic (T10) spinal cord. Just after transection, the right hind limb of every rabbit was immobilized with a plaster support to keep the knee in extension and the hip unrestricted. The plaster was temporarily removed once a day (six times per week) to allow the knees passively mobilized at the maximum range for 5 min. Local swelling, local skin temperature and grade of ossification of the paraplegic limbs were observed. After 5 weeks, the rabbits were sacrificed, and the quadriceps muscles of the right hind limbs were removed for the histological examination. ResultsAfter 5-week immobilization and temporary passive mobilization, HO was successfully induced in all 10 rabbits. There was local skin temperature increase and local swelling in the right hind limbs. The histological changes were similar to those observed in clinical HO. Conclusion5-week immobilization and temporary passive mobilization approach may successfully induce HO, and it may be used to study the pathogenesis of HO after spinal cord injury.

Oblective To evaluate the corneal healing of non-epuality diopter response histopathologically,immunohistochemically and ultrastructurally after excimer laser photorefractive keratectomy(PRK) with SVS APEX PLUS(Summit Technology Inc. USA) excimer laser, and the effects of corticosteroid on the healing. Methods PRK on 6 white rabbits(12 eyes) was performed on right eye of the rabbit for an attampted correction of -4.00 diopter and on left eye for an attempted correction of -8.00 diopter. The rabbits were divided into 2 groups randomly and each group included 6 eyes: Group FLM (3 rabbits, 6 eyes) and group CM (3 rabbits, 6 eyes). Fluoromethalone was given to group FLM,and chloromycetin to group CM. On 10d, 30d and 100d ,the eyes of one rabbit in each group were enucleated randomly. Half of each cornea was prepared for electron microscope observation (SEM and TEM)and the rest embedded in OCT compound for immunohistochemical study to examine Ⅲ -C and FN. Results All eyes were reepithelialized within 3d after PRK. Subepithelial corneal haze was observed on 15d,which was dominant on 30 or 60d. On 100d postoperatively,corneal hazes of 11 eyes were grades 0 or 0. 5,only 1 eye(the left eye of group CM) was denser haze (grade 1). On 3d postoperatively, one or two layers of corneal epithelial cell covered the ablation zone. On 30d after PRK,the epithelial cells showed hyperplastic changes. The cells were larger and increased from normal 5 or 6 layers to 7 or 8 layers of cells on 100d after PRK,epithelium was clear with more bright epithelium. Microplicae and microvilli were less than before. The expression of Ⅲ -C and FN in group CM was significantly more evident than that in group FLM. Conclusion The study show that despite recovery of a continuous and smooth epithelial layer and nearly normal corneal tissues on 100d after PRK,abnormalities of both epithelium and superficial stroma can be detected in the area of ablation. The ablation depth of stroma can influence the appearance of corneal haze after PRK. The microplicae and microvilli of rabbit cornea epithelium become less after PRK,which can be one of cause leading to ocular dry sensation in some patients.

ObjectiveTo identify the framework for assessing health related quality of life(HRQOL) of Kaschin-Beck disease(KBD),in order to reflect the impact of KBD on quality of life in patients with the disease.MethodsQualitative descriptive research was adopted.Semi-open ended questions were developed by using the World Health Organization(WHO) definitions of health and quality of life.Group interview and face to face interviews were conducted on 48 patients with KBD and 29 health care experts on KBD in Linyou and Yongshou counties,Shaanxi province,which were higher prevalence areas of KBD.Content template analysis was conducted and the template was based on the WHOQOL-100's framework.ResultsThe framework of HRQOL for KBD included four domains:physical activity,familial/social support,economic and psychological state.There were also eleven facets which were:pain and discomfort,physical function and activity limitation,diet and sleeping,social relationship,concerns of family responsibilities,social support,economic,housing and the surrounding environment,appearance concerns,mental health,and general state of health.The total entries were 69.ConclusionsThe framework for assessing HRQOL of KBD is established.The framework highlights the impact of KBD on the patients' quality of life with higher specificity.

Background Image clarity during near work is influenced by several factors,such as accommodative lag,pupil size and monochromatic aberrations.Since image clarity during extended reading at near distance has been cited as a possible inducement of myopia in childhood and a possible difference between myopic and emmetropic people throughout life,it is important to examine these factors in myopic and emmetropic myopic juvenile during reading at near distance. Objective The aim of this study was to investigate the relationships among wavefront aberrations,accommodative response and pupil size in early onset and progressive myopes eyes under the different reading status and explore the possible mechanism of the development of myopia as well. Methods Fiflyseven subjects aged from 12 to 16 years were enrolled and grouped as emmetropes,the onset of myopes and progressive myopes.Reading material were Chinese novels presented by rapid serial visual presentation at a distance of 25 cm. Accommodative response and pupil size were recorded by a Grand Seiko WV-500 autorefractor.The Image J software was used to calculate the pupil diameter.Wavefront aberrations were then measured with a WASCA wavefront analyzer. Results Aberrations and accommodative response showed large inter-subjeet variability.With accommodative stimulus of 4 diopter,the accommodative lag in the early-onset of myopes group and progressive myopes group were ( 1.72 ±0. 53) D and ( 1.74 ±0. 44) D, showing larger value in comparison with ( 0. 96 ±0. 55) D of emmetropes group( t＝4.25 ,t=4.47 ,P<0. 001). However,there were no significant differences in accommodative lag between the early-onset of myopes group and progressive myopes group( t = 0. 18, P>0. 05). The mean value of pupil diameter, total RMS value, high-order RMS value, spherical aberration and coma were all significantly reduced with the stimulus varied from 0 D to 4 D( P<0. 01). However,none of the pupil sizs,total RMS value,high-order RMS value,spherical aberration and coma had significant difference among different refractive groups( P>0. 05). Conclusion The early-onset of myopes and progressive myopes had larger accommodative lag. The lower sensitivity to defocus at near reading distance,inducing the larger accommodative lag and hyperopic defocus may be linked to the developing myopia.

Background T helper cell 17 (Th17),a newly discovered subset of CD4+ T cells,have been found to play an important role in dry eye disease in animal model.Further investigation should be done on the immunopathogenesis of Th17 cells in dry eye patients.Objective This study was to analyze the expression status of interleukin-17 (IL-17) and IL-22 in tear and supernatant of peripheral blood mononuclear cells (PBMCs) of dry eye patients and their correlation with clinical symptom and sign.Methods Twenty Sj(o)gren syndrome (SS)patients,twenty non-Sj(o)gren syndrome (NSS) patients were included in Wuxi Second Hospital from 2010 to 2011,and twenty healthy volunteers were recruited at the same period.All of subjects understood the purpose and procedure of research and written informed consent was obtained form each subject initial of this study.Dry eye symptom questionnairs were self-answered and multiple dry eye disease-related clinical tests,including the breakup time of tear film (BUT),Schirmer Ⅰ test (S Ⅰ t) and corneal fluorescein staining were performed.The periphery blood of 3 ml and tear were collected in all the subjects,and IL-17 and IL-22 levels in supernatant of PBMCs and tear were detected by enzyme-linked immunosorbent assay (ELISA).The correlations between levels of IL-17 and IL-22 with BUT,S Ⅰ t,corneal fluorescein staining and dry eye scores were analyzed.Results The dry eye scores reduced,BUT prolonged,S Ⅰ t increased and corneal fluorescein dye decreased from SS group,NSS group to normal control group,with significant differences among the three groups (dry eye scores:H =40.81,P＜0.01 ; BUT:H =40.15,P＜0.01 ;S Ⅰ t..H=50.07,P＜0.01 ;corneal dye scores:H=40.52,P＜0.01).The concentration of IL-17 in the supernatant of PBMCs in the SS patients,NSS patients and normal controls were (964.92±124.83)ng/L,(718.85± 115.89)ng/L and (341.95±85.08) ng/L,showing a statistically significant difference among them (F=162.95,P＜0.01).The levels of IL-17 in the tear were (440.69±126.09) ng/L,(364.33±126.85) ng/L and (61.16±11.60) ng/L in the SS group,NSS group and normal control group respectively,exhibiting an elevated level in the SS group and NSS group compared with the control group (F=75.27,P＜0.01).In addition,the levels of IL-22 in the supernatant of PBMCs in the SS patients,NSS patients and normal controls were (98.77± 11.27) ng/L,(79.65 ± 11.01) ng/L and (32.78±9.34) ng/L,and those in the tear were (22.22 ± 8.96) ng/L,(14.92 ±4.35) ng/L and (10.47 ± 2.67) ng/L,with significant differences among the three groups (F =206.27,P＜0.01 ;F =19.87,P＜0.01).The significant correlations were found between the IL-17 and IL-22 concentration in the supernatant of PBMCs and tear with corneal fluorescein staining scores and S Ⅰ t.Conclusions The contents of IL-17 and IL-22 in PBMCs and tear upregulate in the SS and NSS patients,indicating that Th17 plays a key role in the immunity mechanism of dry eye.

Objective To explore the effect of oxaliplatin ( OXA) on enhancing radiosensitivity in human hepatocellular carcinoma cell line HepG2 . Methods 50% inhibition concentration ( IC50 ) of HepG2 cells treated with OXA was measured by using MTT method at 6, 12, 24, 48 hours. Then clone formation assay was applied to obtain sensitizing enhancement ratio ( SER) of OXA combing IR, according to the survival fraction of three groups 10?14 days after treatments:placebo?treated group ( C) ,radiation group ( IR, single dose of 1 Gy,2 Gy,4 Gy,6 Gy,8 Gy,10 Gy) and IR synchronizing OXA group ( IR+3 mg/L OXA) . The proportions of cell apoptosis were analyzed using flow cytometry at 24 hours after treatment. At last, we semi?quantitative tested the expression of extracellular regulated protein kinase 1/2 ( ERK 1/2 ) and DNA damage repair protein Ku?70 of the C,IR and IR+OXA groups. Statistical analysis was performed by T test. Results The IC50 of OXA on HepG2 cells is 54?4 mg/L at 6 hours,29?1 mg/L at 12 hours,17?8 mg/L at 24 hours and 10?5 mg/L at 48 hours.3 mg/L was selected in clone formation assay at which 80?90% HepG2 cells survived at 24 hours. The SER ( SF2 ) is calculated as 1?59. Flow cytometry showed the proportion of survival cells in IR+OXA group is significantly lower than those of IR group ( P=0?005) ,OXA group ( P=0?008) and C group ( P=0?001) . The expressions of ERK 1/2 were inhibited in IR and IR+OXA groups compared by that of control group. But the expression of ERK 1/2 in IR group showed increasing after 48 hours which was higher than that of IR+OXA group. For Ku?70,the changes of expression were similar with that of ERK 1/2. Conclusion Oxaliplatin presented enhancing radiosensitivity in human hepatocellular carcinoma cell line HepG2 in vitro.