BACKGROUND: It has been reported that type 1 diabetes mellitus can result in impairments of bone regeneration and repair, and local injection of fibroblastic growth factor-2 (FGF-2) can obviously promote fracture healing, but its effect on type 2 diabetes mellitus is still unclear.OBJECTIVE: To observe the effects of recombinant human fibroblastic growth factor-2 (rhFGF-2) combined with soluble tumor necrosis factor receptor-1 (sTNF-R1) on impaired bone regeneration and repair in type 2 diabetes mellitus.DESTGN: A randomized controlled trial.SETTING: Department of Orthopaedics, the Third Xiangya Hospital of Central South University.MATERIALS: Twenty male Zucker diabetic fatty rats (ZDF/Gemi-fa/fa), 10 weeks of age, were purchased from Charles River Laboratory. rhFGF-2 was obtained from Orquest Incorporation; sTNF-R1 protein (PEG-r-metHu-sTNF-R1) was provided by Amgen Incorporation.METHODS: This experiment was finished in the central lab of the Third Xiangya Hospital of Central South University from September to November in 2006. ①Grouping: The 20 rats were randomly assigned into treated group (n =10)and control group (n =10). ② Experimental methods: All rats were examined for body mass, blood glucose, glycosuria and glycosemia. One week later, all the rats underwent the standard DO protocol, including placement of the external fixators and osteotomies to the left tibia. Distraction was initiated in the following morning (one day latency) at 0.2 mm b.I.d. (0.4 mm per day) and continued for 14 days. During surgery, all the rats received an injection of either rhFGF-2(25 mg/kg) for the treated group, or physiological saline (25 mg/kg) for the control group, into the hematoma of the osteotomic gap. The sTNF-R1 (8 mg/kg) or the same. Amount of saline was subcutaneously injected into the treated and control rats respectively every other day for 14 days. Evaluation: The serum biochemical indexes, amount of bone formation and number of proliferative cells in the distraction gaps were determined.MAIN OUTCOME MEASURES: Biochemical indexes, amount of bone formation and number of proliferative cells in the distraction gaps.RESULTS: All the 20 rats were involved in the final analysis of results. ①The blood glucose, glucosuria, ketonuria,serum levels of insulin and osteocalcin were not obviously different between the treated group and control group (P ＞0.05). ② The area and density of mineralization of the distraction gaps, and the endosteal and peristeal new bone formation in the treated group were all obviously higher than those in the control group (P ＜ 0.05-0.01). The number and percentage of the positive cells of proliferating cell nuclear antigen (PCNA) in the distraction gaps were obviously higher in the treated group than in the control group (P ＜ 0.05-0.01).CONCLUSION: The local application of rhFGF-2 combined with sTNF-R1 can enhance bone formation by increasing the proliferation during distraction osteogenesis in ZDF rats. The combination of rhFGF-2 and sTNF-R1 may be an effective treatment for type 2 diabetic patients with fracture healing problem.

Objective To assess the application of MRI in diagnosis of oblique vaginal septum syndrome (OVSS).Methods Clinical and imaging data of 41 patients with OVSS confirmed by surgery from March 2011 to November 2016 were retrospectively analyzed.Results The average age of patients was 20.5 year (10-46 years).The primary clinical symptoms were menorrhalgia (16 cases) and menorrhagia (13 cases).There were 12 cases of type Ⅰ,23 cases of type Ⅱ,5 cases of type Ⅲ and 1 case of type Ⅳamong 41 cases of OVSS.The resections for OVSS were performed in 35 cases.Forty two cases were diagnosed as OVSS by MRI scan,and 41 were confirmed by surgery,the accuracy of MRI diagnosis was 97.6％ (41/42).MRI showed uterus didelphys,hydrocolpos or hematocolpos with varying degrees,and revealed ipsilateral renal agenesis in all 41 cases.Conclusion MRI scan can accurately diagnose oblique vaginal septum syndrome and provide comprehensive information for clinical treatment.

Objective:To explore the occurrence and influencing factors of post-burn psychological stress disorder in preschool children.Methods:This study was a multi-center cross-sectional survey. From January 2022 to February 2023, 85 preschool children (aged 1 to 6 years) with burns admitted to the Affiliated Hospital of North Sichuan Medical College, Nanchong Central Hospital, Suining Central Hospital, Guang'an People's Hospital, and Guangyuan Central Hospital who met the inclusion criteria were selected as respondents. A self-made general information questionnaire was used to investigate the children's general data including gender, age group, residential area, main caregiver and their education level, and family type, as well as the injury condition including cause of injury and burn severity. The Child Stress Disorders Checklist was used to investigate the occurrence of psychological stress disorder in children at 3 days to 1 month after injury, and the incidence rate was calculated. The children were classified according to their general data and injury condition, and the occurrence of psychological stress disorder in children at 3 days to 1 month after injury was recorded, and the influencing factors for post-burn psychological stress disorder in preschool children were screened.Results:A total of 85 questionnaires were distributed and 85 valid questionnaires were recovered, with an effective recovery rate of 100%. Among the children, there were 45 boys and 40 girls, with most children aged 1 to 3 years. There were slightly more children in rural areas than in cities. About half of the children were mainly cared for by their parents and grandparents, respectively, and the education level of the main caregivers was mainly high school/technical secondary school. The family type was mainly core family and extended family. The main cause of injury was hydrothermal scald, and the severity of burns was mainly moderate. The incidence rate of psychological stress disorder in this group of children at 3 days to 1 month after injury was 34.12% (29/85). There were statistically significant differences in the occurrence of psychological stress disorder in children with different age groups, causes of injuries, and burn severity at 3 days to 1 month after injury (with χ2 values??of 9.18, 7.80, and 25.47, respectively, P<0.05); there were no statistically significant differences in the occurrence of psychological stress disorder in children with different genders, residential area, main caregivers, main caregivers' education levels, or family types at 3 days to 1 month after injury ( P>0.05). Multivariate logistic regression analysis showed that age group and burn severity were independent influencing factors for the occurrence of psychological stress disorder in preschool children after burns (with odds ratios of 8.21 and 33.99, respectively, and 95% confidence intervals of 1.57-43.04 and 5.55-207.93, respectively, P<0.05), the older the child and the more severe the burn, the higher the possibility of the occurrence of psychological stress disorder. Conclusions:The incidence rate of psychological stress disorder is high in preschool children after burns. Age group and burn severity are independent influencing factors for the occurrence of post-burn psychological stress disorder in this type of children.