Objective: To explore the longitudinal association of the levels of plasma irisin among children with changes in obesity related parameters and newly onset obesity, and to explore whether physical activity (PA) and sedentary behavior(SB) have regulatory effects, to provide a scientific basis for the prevention and control of childhood obesity work. Methods: Cluster random sampling method was used to select 521 children from five schools in Guangzhou in 2017 at baseline and were followed up in 2019. A based on baseline PA and SB, children who meet the following criterion were selected:moderate vigorous intensity PA≥60 min/d or <150 min/week; and gender , age specific SB≥ P 75 or SB < P 25 . Plasma irisin concentration was measured in all the selected children. Multiple linear regression and Logistic regression were conducted to analyze the association. Results: The two year cumulative incidence of obesity, overweight and obesity, and central obesity was 2.82%, 6.57%, and 6.81%, respectively. There was no statistically significant association between plasma irisin levels and changes in obesity related parameters, newly onset overweight obesity or central obesity among children ( P >0.05). After stratified by PA, the irisin concentration in the low PA group was positively associated with weight change ( B=0.229, P =0.03). After stratified by SB, the irisin concentration in the low SB group was positively associated with the height change ( B=0.210, P <0.05). In addition, PA level and SB level both had a moderating effect on the association between plasma irisin levels and the weight change ( P PA=0.01, P SB =0.05). Conclusion PA and SB show moderating effect on plasma irisin concentration and weight gain. No association of irisin concentration with newly onset overweight or obesity among children has been found.

OBJECTIVE: To explore the clinicopathological features and types of genic mutations in DNA mismatch repair (MMR) in colorectal cancer (CRC). METHODS: Immunohistochemistry was used to determine the expression of MMR proteins in 1394 patients with CRC, and PCR-capillary electrophoresis (PCR-CE) was used to detect microsatellite instability (MSI) in 106 cases of defective MMR (dMMR), 46 cases of proficient MMR (pMMR) with heterogeneous expression and 147 randomly selected cases of pMMR. The relationship between the expressions of MMR proteins and the clinicopathological features of the patients was evaluated. The consistency between the results of immunohistochemistry and PCR-CE was assessed. RESULTS: Immunohistochemical staining showed an incidence of dMMR of 7.6% in the patients. The main type of dMMR was co-deletion of MLH1 and PMS2, accounting for 55.7% of the total dMMR cases. The deletion of MMR proteins was significantly correlated with the patients' age, tumor location, tumor size, gross type, histological type, degree of differentiation, lymph node status and TNM stage ( CONCLUSIONS The main type of dMMR is co-deletion of MLH1 and PMS2 in patients with colorectal cancer. dMMR colorectal cancer has typical clinicopathological features and a lower incidence in China than in Western countries. The results of immunohistochemistry and PCR-CE are highly consistent for detecting dMMR in colorectal cancer patients.
China ; Colorectal Neoplasms/genetics* ; DNA Mismatch Repair/genetics* ; Humans ; Microsatellite Instability

Objective To investigate the clinical effect on incomplete spinal injury by ganglioside intravenous injection combined with intrathecal injection.Methods From January 2011 to January 2015, seventy-nine cases with irreducible articular process interlocking of cervical spine fracture with dislocation of cervical spinal cord injury,underwent one stage anterior and posterior surgical treatment,postoperative routine use of antibiotics to prevent infection,and the hormone,dehydration to promote bone cell growth and neurotrophic drugs treatment.The patients were randomly divided into the intravenous injection group(42 cases),given intravenous injection of monalsialic acid four hexose ganglioside sodium(GM-1)40 mg/d,mecobalamin tablets 0.5 mg/time,3 times/d,30 d oral;the combined intrathecal injection group(37 cases)was given GM-1 40 mg/d,intravenous injection at 15 d after intrathecal injection,1 time a week 40 mg,with a total of 4 weeks.The degree of spinal cord injury was evaluated according to Frankel classification; cervical function was evaluated according to JOA score; bone graft fusion,stability of cervical spine and degree of spinal cord injury were evaluated by imaging.Results The operation time in the intravenous injection group and the combined intrathecal injection group were(4.15 ± 0.65)h and(4.10 ± 0.85)h,and the intraoperative blood loss was(850.50±35.10)ml and(858.60±25.20)ml,respectively,and there were no significant differences between the two groups(t=1.375,1.452,P>0.05).The total dose of GM-1 in the combined intrathecal injection group was(785.20 ± 3.28)mg,significantly higher than that in the intravenous injection group((610.55 ± 5.28) mg),the difference was statistically significant(t=12.542,P<0.05);79 patients were followed up for 12-24 months,with an average of(15.2 ± 1.3)months.The improvement rate of nerve function of the combined intrathecal injection group was(64.35±4.33)%,significantly higher than that in the intravenous injection group (55.50±5.44)%,the difference was statistically significant(t=8.813,P<0.05);the postoperative JOA scores of the intravenous injection group((13.55 ± 1.75)points)and combined intrathecal injection group((12.85 ±1.97)points)were significantly higher than those before the surgery((7.25± 0.83)points,(7.19± 0.93) points),the differences were statistically significant(P<0.05).There was no significant difference in the JOA scores between the two groups before and after the operation(P>0.05).At the last follow-up,X-ray showed bone fusion at the bone graft site,and the internal fixation was good and firm.MR showed that the degeneration signal area of the cervical spinal cord decreased in varying degrees,and edema and inflammatory reaction disappeared.Conclusion Postoperative treatment of ganglioside intravenous injection combined with intrathecal injection is safe and feasible in the treatment of incomplete cervical spinal cord injury caused by cervical fracture dislocation with irreducible articular process interlocking.

Objective To discuss the effect of low-frequency pulsed electromagnetic field (ELF-PEMFs) combined with-whole-body vibration(WBV) on the bone mineral density,bone microstructure and the biological mechanics performance inhindlimb unloading osteoporosis rats.Methods Forty female 4 months aged SD rats were randomly divided into five groups:blank group,control group,ELF-PEMFs group,WBV group,low-frequency pulsed electromagnetic field combined with wholebody-vibration(ELF-PEMFs + WBV) group.The blank group was the normal control which comprise the healthy rats.The controlgroup was the disused osteoporosis model.Except for the blank group,thehind limb unloading rats were kept for six weeks.No intervention were provided to the blank group and the control group,other three groups were treated with physical therapy.The bodyweight of rats in each group was record.Bone mineral density was measured by Dual energy X-ray absorptiometry.The right femurs was analyzed by Micro-CT and the left femur was tested through a biomechanical machine.Results After 8 weeks of continuous treatment,the ELF-PEMFs group,WBV group,ELF-PEMFs+WBV group were significantly increased in weight and bonedensity (PELF-PEMFs=0.015,PWBV=0.016,PELF-PEMFs+WBV=0.007),(tELF-PEMFs=5.956,PELF-PEMFs=0.000;tWBV=6.127,PWBV=0.000;tELF-PEMFs+WBV=4.639,PELF-PVMFs+WBV=0.000).The difference was statistically significant (F=0.091,P=0.018).The ELF-PEMFs +WBV group was significantly higher in bone formation index.The items of BV/TV,Tb.N,Tb.Th and SMI in Micro-CT analysis increased,while Tb.Sp and Conn.D index decreased significantly.Trabecular bone structure of all the three groups was improved,however the ELF PEMFs +WBV group was better than the other two groups (vs.ELF-PEMF group,PBV/TV=0.041,PTb.N=0.026,PTb.Th=0.009,PConn.D=0.030,PTb.Sp=0.045,PSMI=0.032;VS.WBV group,PBv/Tv=0.018,PTb.N=0.004,PTb.Th=0.022,PConn.D=0.042,PTb.Sp=0.039,PSMI=0.049).The maximum load,energy absorption and bone stiffness index in biomechanicalperformance test were improved.The combination treatment group were significantly improved (F=0.167,P=0.038).Conclusion Low-frequencypulsed electromagnetic field combined with whole body vibration therapy can improve bone mineral density,bone microstructureand the biological mechanics performance.They have synergistic effect and the combination therapy is better than single treatment.

Objective To investigate the clinical efficacy of Cerus and cucumis polypeptide injection in the prevention of heterotopic ossification for the drug treatment of traumatic knee joint fracture after operation.Methods To retrospect the analysis about 150 cases with fracture reduction and internal fixation of traumatic around the knee joint fracture from January 2010 to January 2014 in Daliang Hospital of Shunde District of Foshan,including 89 cases of reduction and internal fixation were performed in group A,and with safflower injection infusion therapy,61 cases with allergic constitution were not given by Cerus and cucumis polypeptide injection in group B.According to the activity degree and HSS scoring system,the function of knee joint was evaluated before and after operation.According to the condition of arounding knee joint bone fracture healing and heterotopic ossification in X-ray and CT examination and to compare the correlation of probability between heterotopic ossification and Cerus and cucumis polypeptide injection in traumatic around knee joint fracture.Results All were followed up with 12.0-24.0 months,with average(13.6±2.2)months.Activity of knee joint between group A and B were respectively(47.2±7.3)°,(46.4±6.8)°before treatment,and HSS score of group A and B were respectively(50.8±10.0)points,(51.5±9.6)points,so there were no statistically significant difference(P＞0.05).Activity of knee joint between group A and B were respectively(115.1±6.5)°,(112.1±7.8)°at the time of the last follow-up,and HSS score of group A and B were respectively(86.2±5.0)points,(85.5±7.0)points,so there were no statistically significant difference(P＞0.05).There were statistically significant difference in activity of knee joint and HSS scores in group A or in group B at the time of the last follow-up(t=13.322,12.898,10.052,10.435,P＜0.05).The incidence of heterotopic ossification was 8.99％(8/89)in group A,the incidence of heterotopic ossification was 1.64％(1/61)in group B,there were statistically significant difference between A and B(x2=10.873,P＜0.05).Conclusion During the drug treatment,there is a correlation between heterotopic ossification and Cerus and cucumis polypeptide injection used in traumatic around knee joint fracture after operation.

Objective To analyze the mammographic features and pathological characteristics among different molecular subtypes of breast cancer.Methods The results of 210 cases breast cancer identified by postoperative pathology were collected and classified to three groups;Luminal,HER-2(+)and TNBC(triple negative breast cancer)by molecular subtypes.Three groups'mammograph-ic features and pathological characteristics were compared.Results 210 cases included 147 Luminal cases,30 HER-2 (+)cases and 33 TNBC cases.There were statistically significant difference between tumor grading and lymph node metastasis (P <0.05).Three groups had statistically significant difference among mass number,mass margin and calcification incidence(P <0.05),and had no sta-tistically significant difference between mass size and shape(P >0.05).The mammographic features of Luminal molecules subtypes showed more mass with burr,HER-2(+)molecules subtypes showed no fixed features but more calcification incidence than other groups,TNBC molecules subtypes showed merely mass with clear margin and less calcification.Conclusion The mammographic fea-tures and pathological characteristics of different molecular subtypes of breast cancer are significant differences.

Objective To elucidate the expression pattern of E-cadherin/catenin adhesion complex and its association with pathologic features in nasopharyngeal carcinoma(NPC).Methods Fifty-two non-keratinizing NPC specimens with adjacent non-neoplastic mucosa were examined for E-cadherin,?-CATenin,?-CATenin.Results Abnormal expression rate of E-cadherin,?-catenin and ?-catenin in NPCs were 48.1%(25/52),32.7%(17/52) and 34.6%(18/52),respectively,whereas all adjacent non-neoplastic tissues normally expressed these proteins.Difference of expression of E-cadherin,?-catenin and ?-catenin between tumor tissues and non-cancerous tissues was statistically significant(P

Objective To explore the effects of low energy intravenous He-Ne laser irradiation of blood (ILIB) on cell proliferation, apoptosis and genotoxicity of lymphocytes in patients with cerebral infarction (CI). Methods The lymphocytes in peripheral blood in patients with CI were sampled before and after treatment and cultured, and then, some parameters such as the mitosis index (MI), cell cyclical kinetics index (CCKI), sister chromatid exchanges frequencies (SCEF) and apoptosis were analyzed in order to explore the effects of ILIB on lymphocytes. Results The proliferative activities of lymphocytes were significantly increased by ILIB (P0.05). After ILIB, the rate of apoptosis in patients with CI was significantly increased when compared with that before treatment and that of the control group, as revealed by flow cytometry (FCM) (P

Objective To improve the diagnosis of multiple tuberculosis of bone and joints by analyzing its radiologic findings respectively .Methods 5 cases with multiple tuberculosis of bone and joints were all proved by pathology of them, there were 1 male and 4 female, the age ranged from 15 to 56 years old. X-ray films were all taken in 5 cases. Vertebral canal iodolography was performed in 1 case, 2 cases were undergone biopsy, and operation was done in 3 cases.Results Multiple bones in 5 cases were involved, including 3～5 bones. Of all cases, long bone and short bone were involved together in 3 cases, plat bone and vertebra were involved together in 1 case, long bone, plat bone and vertebra were simultaneously involved in 1 case. And 3 cases involved long bone and short bone simultaneously had pathosis in unilateral limbs, 2 cases involved plat bone had pathosis in bilateral. X-ray plain films demonstrated osteolytic destruction with slight sclerosis at the margin of partial destructive areas, which were round, oval or irregularity. There were soft tissue masses around the involved bones.Conclusion The multiple tuberculosis of bone and joint is of some clinic symptoms and X-ray features, but the confirmed diagnosis of which is entertained by biopsy and pathology.

Objective To study the value of double contrast barium enema(DCBE),colonoscopy and spiral CT in examination of colonic disease.Methods 325 cases with colonic disease underwent DCBE,colonoscope and CT examinations.The detecting rates and the accurate rates in localizing the lesions were compared among these three examinations.Results The detecting rate of lesions by DCBE,colonoscope and CT were 91.1,89.8 and 64.6,respectively,there was no statistical difference between the former two,but there was difference between the former and CT(P