BACKGROUND: Finite element method has become an important means for biomechanical study against sideways falls because of its unlimited sample size, small experimental error and good repeatability.OBJECTIVE: To establish three-dimensional normal pelvis and brace-covered pelvis models and then to analyze the stress, strain and displacement distribution during sideways fall and to verify the effectiveness of hip brace.METHODS: Digital human Abaqus 6.51 software was used to build three-dimensional normal pelvis and brace-covered pelvis models. The rigid constraint surface was fixed. The whole pelvic model was loaded with 2 m/s loading. The stress, strain and displacement variation with time and contours were detected prior to and after wearing the hip brace. RESULTS AND CONCLUSION: Compared with the normal model, the contact force between the pelvis and the ground, the maximal compression strain of the cancellous bone when the maximal contact force between the pelvis and the ground generated, the maximal strain of the greater trochanter and femoral neck, the maximal von-Mises stress of the greater trochanter and femoral neck, and the mean stress of the greater trochanter and femoral neck were significantly reduced in the brace-covered pelvis model during sideways falls. These findings indicate that the hip brace can play a protective role in the greater trochanter, and effectively reduce the incidence of intertrochanteric fractures during sideways fall.

Acute Disease ; Humans ; Noninvasive Ventilation ; Positive-Pressure Respiration ; Respiratory Insufficiency ; complications ; therapy ; Silicosis ; complications ; therapy

OBJECTIVE:To investigate the improvement effects of andrographolide dripping pills combined with Danxi yup-ingfeng granules on immunologic function of children with allergic rhinitis(AR). METHODS:Two hundred and eight AR children were randomly divided into control group,observation groupⅠ,observation groupⅡ,observation groupⅢ,with 52 cases in each group. Control group was given Loratadine syrup 10 mL,qd;observation groupⅠwas given Danxi yupingfeng granules 15 g,bid+Andrographolide dripping pills 0.6 g,tid;observation groupⅡwas given constant dose of Andrographolide dripping pills;observa-tion groupⅢwas given constant dose of Danxi yupingfeng granules. Four groups were treated for 2 weeks. 2 weeks later,they were given Loratadine syrup orally if the symptom appeared again. The levels of IgE and Th1/Th2 were compared among 4 groups be-fore treatment,1,2 weeks after treatment,3 months after the end of treatment. The children receiving Loratadine syrup orally due to the recurrence of AR 3 months after the end of treatment were observed. RESULTS:Before treatment,there was no statistical significance in serum levels of IgE and Th1/Th2 among groups(P>0.05). One week after treatment,serum levels of IgE and Th1/Th2 were improved significantly,with statistical significance (P<0.05);but there was no statistical significance among 4 groups (P>0.05). 2 weeks after treatment,serum levels of IgE and Th1/Th2 were improved significantly,and the observation groups were significantly better than the control group,with statistical significance(P<0.05). Three months afterthe end of treatment,serum lev-els of IgE and Th1/Th2 in observation group were improved significantly and better than control group,with statistical significance (P<0.05);there was no statistical significance in control group,compared to before treatment(P>0.05). The recurrence rate of ob-servation groupⅠwas significantly lower than that of observation groupⅡ,observation group Ⅲ and control group,with statistical significance(P<0.05). No obvious ADR was found in 4 groups. CONCLUSIONS:Andrographolidume dripping pills combined with Danxi yupingfeng granules can effectively improve immunologic function of AR children and reduce recurrence rate with good safety.

Objective To investigate the effects of Na +-dependent high-affinity dicarboxylate cotransporter 3(NaDC3) and glucose on the transport of succinate in human proximal tubular epithelial cells (HKC) . Methods Western blot was used to detect the expression of hNaDC3 protein in the pcDNA3-hNaDC3, pcDNA3-AhNaDC3 and pcDNA3, transfected HKC, and normal HKC cell. Analysis of succinate contents in the intaking-buffer at the various time points and in the variouse concentrations of glucose were determined by capillary zone electrophoresis. Results The cell transfected with pcDNA3- hNaDC3 was found to have over-expression of hNaDC3 protein for about 1.5 times that of the normal HKC, while succinate content in intaking-buffer was decreased. Although the cells transfected with pcDNA3-AhNaDC3 showed lower expression of hNaDC3 protein, being about 0.6 times that of normal HKC cells, the decrease of succinate in intaking buffer was not obviously effected. There were no differences in hNaDC3 protein content and succinate intaking between the cells transfected with pcDNA3 and normal HKC cells. With the increase in glucose concentration, the decrease of succinate in intaking-buffer was accelerated. Conlusion The results suggested that the overexpression of hNaDC3 protein can cause the succinate-intake more quickly in HKC.

BACKGROUND:Posttraumatic osteomyelitis is bone infection after surgery of open fractures or other joint, which leads to more secretions in antrum or bone exposed wounds, long treatment cycle, delayed healing of fracture, even disunion. The key link in the treatment is complete debridement, adequate drainage, and the use of external fixators with low interference and far away from lesions. ＜br> OBJECTIVE:To observe the clinical efficacy of external fixator combined vacuum sealing drainage (VSD) in the treatment of post-traumatic osteomyelitis, and compared with conventional catheter drainage. ＜br> METHODS:Since June 2010 to June 2013, 21 patients of post-traumatic chronic osteomyelitis were included in this study and divided into VSD group (n=11) and conventional catheter drainage group (n=10). Al patients in VSD groups underwent debridement and VSD was used to fil dead space, then the wounds were sutured. Cases appeared nonhealing fractures underwent external fixation, 10 cases using external fixators and 1 case retained original external fixator. Al patients achieved the closed wounds at the second phase, 9 cases were directly sutured, and 2 cases received skin flap transplantation. Among them, 1 case received autologous bone graft at the third phase because of bone defects. In the conventional catheter drainage group, al patients underwent debridement and conventional catheter drainage to rinse the wounds after surgery, 3 cases failing to close the wounds changed to receive ordinary dressing and skin flap transplantation at the second phase. Cases appeared nonhealing fractures underwent external fixation. Local swel ing, pain and fever were observed after treatment. The time of total hospitalization stay and fracture healing was recorded. ＜br> RESULTS AND CONCLUSION:The VSD group quickly control ed preoperative symptoms such as swel ing and pain and fever than the conventional catheter group (P＜0.05). The length of hospital stay showed no significant difference between the two groups (P>0.05). Al patients were obtained through clinic service and fol owed up for 24-36 months. The healing time in the VSD group was shorter than that in conventional catheter group (P＜0.05). Until the end of fol ow-up, no patients in the VSD group appeared infection recurrence, and two cases in the conventional catheter group had recurrent infection. The results suggest that VSD combined with external fixator can repair post-traumatic chronic osteomyelitis due to rapid control of infection, easy care, shortened treatment time, and reduced rate of postoperative recurrence. In addition, external fixator can be used as the final fixation for post-traumatic chronic osteomyelitis.

Our country has made great achievements in organ transplantation,but there still exist many problems such as shortage of organs,seriously hindering the development of organ transplantation.Family factor,one of the influencing factors of organ transplantation in our country,has the characteristics of persistence and permanency.Researches on family factors will be helpful for the healthy development of organ transplantation.Started from family factors,this paper discussed the ethical issues of organ transplantation in our country and proposed appropriate measures such as changing moral cognition,advocating family support,strengthening community family intervention,correctly dealing with family ethics relationship,in order to provide a useful reference for the development of organ transplantation in China.

Background and purpose:New treatment strategies should be explored for non-small cell lung cancer (NSCLC) patients after the failure of the epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI). To compare the efficacy and toxicities of chemotherapy in combination with EGFR-TKI or single chemotherapy in advanced NSCLC patients with EGFR-TKI resistence. Methods:In this study, 18 patients were enrolled. Eight patients were treated by chemotherapy combined with EGFR-TKI (CE group);10 patients were treated by single chemotherapy (E group), 21 days for one cycle. All patients received at least 2 cycles of treatment. Results:All 18 patients had been evaluated. The CE group was similar to the E group in objective response rate (ORR:25%vs 10%, P=0.832). The CE group was higher than the E group in disease control rate (DCR:87.5%vs 30%, P=0.046). The median PFS was longer in CE group (3.5 months vs 2.4 months, P=0.05). The CE group was higher than the E group in rash (75%vs 10%, P<0.05). The grade 3-4 toxicities did not have significantly differences between the two groups (P>0.05). Conclusion:Though there was no significant difference in ORR between the 2 groups (P>0.05), the CE group was superior to the E group in DCR and PFS. Patients with retreatment of advanced NSCLC after the failure of EGFR-TKI can be controlled by continued EGFR-TKI and chemotherapy.

Objective To evaluate the application of prevention technique for mother‐to‐child transmission of human immunode‐ficiency virus(HIV) in Laibin City .Methods Prevention techniques for mother‐to‐child transmission of HIV were applicated in the city .Women in pregnancy test received acquired immunodeficiency syndrome(AIDS) counseling and test at the same time .Measures were taken to prevent the mother‐to‐child transmission of HIV for women who confirmed HIV positive ,including the use of antiret‐roviral drugs ,safety midwifery and feeding guidance ,and so on .Results The average HIV counseling and testing rate was 99 .1%(176 001/177 738) for the past 5 years .269 cases were HIV positive ,and the positive rate was 0 .15% (269/176 001) .Via health advisory guidance ,pregnant women diagnosed with AIDS understood the dangers of AIDS and the mode of its transmission ,and then free to chose weather to have the pregnancy terminated .Finally ,there were 67 pregnant women chose to terminate the preg‐nancy ,and 202 women decided to have children who were included in the prevention management system of mother‐to‐child trans‐mission .202 infants were born alive ,192 of which took full amount of antiretroviral drugs .The medication rate was 95 .05% (192/202) .42 d and 3 months after birth ,early diagnosis of HIV/AIDS was performed for the infants ,the positive rate of HIV was 0 .50% (1/202) .There were 118 infants at least 18‐months‐old who had underwent HIV test and no positive case was detected . Conclusion AIDS counseling tests in pregnancy test women is necessary ,which could detect HIV positive women .Comprehensive measures are effective methods for the prevention of mother‐to‐child transmission .

Objective On the basis of the investigation and test on professionals and technologists,to put forward the allotment-related encouragement mechanism.correlative principals and measures according to the above-mentioned indexes.to provides policies and measures for the questions generally reflected by professionals and technologists.and to establishes the allotment-related encouragement mechanism with reference of social contribution.Methotis 300 professionals and technologists of provincial academies (institutes) of medical research were surveyed by the questionnaire about following items including:fundomental personal information comprehensive strength of institute:advices of the innovative talent cultivation and soon.The data of the questioaire survey were analyzed and summarized.The valid suggestions were proposed.Results In the provincial academies(institutes)of medical research,57.9% of the professionals and technologists investigated hope to improve their present salary.The anuual income of a research is 30 000 Yuan.which is only one third of the ideal income of 90 200 yuan.Conclusion It is supposed to take regular examination and dynamic management of the professionals and technologists.and then to give performance-related salary treatment ia light of difierent examining results.

Objective To explore the roles of IL-8, sICAM-1 and sE- selectin in the airway inflammation of chronic obstructive pulmonary disease (COPD). Methods The levels of IL - 8, sICAM -1 and sE-selectin in the serum were measured by double-sandwich ELISA in 40 COPD patients and 20 healthy persons. The COPD patients were divided into two groups: 20 cases in COPD a-cute exacerbation group and 20 cases in stable period group. Results The IL- 8, sICAM- 1 and sE - selectin level of serum in patients with COPD acute exacerbation group and stable period group were obviously higher than those in healthy group, and patients with COPD acute exacerbation group was obviously higher than those in stable period group (P