Proteome research has become a new hot spot in the post-genome era. High-resolution two-dimensional gel electrophoresis (2-DE), which provides the most comprehensive analysis system of the whole proteome, was highly improved in recent years. With the development of computer techniques, the powerful and user-friendly image analysis systems appeared to help high-throughput, large-scale proteomic studies. Using new generation two-dimensional image analysis software, ImageMaster 2D Elite, the 2D gels of proteins extracted from cultured Schwann’s cells were processed. The analysis procedure, including image acquirement, spot detection, match, background subtraction, pI/Mr calibration, analysis results report and database query, were reported and discussed.

Objective: To study the clinical effect of relaying peroneal artery perforator flap on anterior middle and lower tibia and donor-site defects repair. Methods: From July 2014 to June 2017, 12 patients were included. The anterior middle-lower tibia soft tissue defects and the primary donor-sites were repaired by relaying peroneal artery perforator flaps, and the second donor-sites were directly closed. The size of anterior middle-lower tibia defects ranged from 5 cm × 3 cm to 13 cm × 9 cm. The flaps repairing the wounds ranged from 6 cm × 4 cm to 14 cm × 10 cm in size. The flaps restoring the first donor-site ranged from 5 cm×4 cm to 10 cm×6 cm in size. The clinical effect was evaluated by observing the appearance of the recipient sites and the donor sites. Results: All the flaps survived uneventfully. All patients were followed up for 8-36 months (average 20 months). The flaps remained with good texture and color. The second donor-sites only left linear scar, which do not affect the overall appearance of limb. Conclusions The blood supply of relaying peroneal artery perforator is reliable without any disturbing of the main artery. The flap located on the lateral of the calf. The relaying peroneal artery perforator flap can repair the soft tissue defect at the anterior middle-lower tibia and improve the appearance of the first donor-site.

Objective: To explore the clinical effect of negative pressure wound therapy (NPWT) in emergency limb-salvage operation of destructive injury of limb. Methods: From July 2014 to December 2017, 43 patients with destructive injury of limb in one side conformed to the inclusion criteria were admitted to our hospital. The patients were divided to NPWT group of 24 patients [ 21 males and 3 females, aged (38±10) years] and routine dressing change group of 19 patients [ 17 males and 2 females, aged (37±10) years] according to their treatment methods. After the emergency debridement, fracture external fixation, neurovascular exploration, and microsurgical repair were performed, NPWT were applied on wounds of patients in NPWT group and routine dressing change treatment on wounds of patients in routine dressing change group. On 7 to 10 days after the emergency operation, incidence of arterial embolism of patients in the two groups were calculated, and condition of wound infection of patients in the two groups were observed. Complete wound healing time and survival condition of limb were recorded. Data were processed with independent sample t test or chi-square test. Results: Incidence of arterial embolism of patients in NPWT group on 7 to 10 days after the emergency operation was 6.67% (3/45), which was close to 5.56% (2/36) of patients in routine dressing change group (χ²=0.043, P>0.05). There was 1 patient with wound infection in NPWT group on 7 to 10 days after the emergency operation, obviously less than 6 patients in routine dressing change group (χ²=5.847, P<0.05). Complete wound healing time of patients in NPWT group was (30±4) d, significantly shorter than (36±8) d of patients in routine dressing change group (t=2.813, P<0.01). Limbs of 24 patients in NPWT group survived, which was close to 18 patients in routine dressing change group (χ²=1.293, P>0.05). Conclusions NPWT can significantly reduce tthe wound infection rate and shorten the time of wound healing of limb with destructive injury after emergency operation, which is worthy of popularization in clinic.

The present study was intend to clone and express the cDNA encoding Cyclophilin B (CyPB) of Schistosoma japonicum, its preliminary biological function and further immunoprotective effect against schistosome infection in mice. RT-PCR technique was applied to amplify a full-length cDNA encoding protein Cyclophilin B (Sj CyPB) from schistosomula cDNA. The expression profiles of Sj CyPB were determined by Real-time PCR using the template cDNAs isolated from 7, 13, 18, 23, 32 and 42 days parasites. The cDNA containing the Open Reading Frame of CyPB was then subcloned into a pGEX-6P-1 vector and transformed into competent Escherichia coli BL21 for expressing. The recombinant protein was renaturated, purified and its antigenicity were detected by Western blotting, and the immunoprotective effect induced by recombinant Sj CyPB was evaluated in Balb/C mice. The cDNA containing the ORF of Sj CyPB was cloned with the length of 672 base pairs, encoding 223 amino acids. Real-time PCR analysis revealed that the gene had the highest expression in 18-day schistosomula, suggesting that Sj CyPB was schistosomula differentially expressed gene. The recombinant protein showed a good antigenicity detected by Western blotting. Animal experiment indicated that the vaccination of recombinant CyPB protein in mice led to 31.5% worm and 41.01% liver egg burden reduction, respectively, compared with those of the control. A full-length cDNA differentially expressed in schistosomula was obtained. The recombinant Sj CyPB protein could induce partial protection against schistosome infection.
Animals ; Antigens, Helminth ; immunology ; Cloning, Molecular ; Cyclophilins ; biosynthesis ; genetics ; immunology ; DNA, Complementary ; genetics ; Escherichia coli ; genetics ; metabolism ; Genetic Vectors ; genetics ; Immunization ; Mice ; Mice, Inbred BALB C ; Recombinant Proteins ; biosynthesis ; genetics ; immunology ; Schistosoma japonicum ; genetics ; immunology ; Schistosomiasis japonica ; prevention & control ; Vaccines, Synthetic ; biosynthesis ; immunology

Objective:To investigate the clinical effect of medial plantar flap combined with free groin flap in the reconstruction of heel defect.Methods:The patients with heel skin and soft tissue defects admitted to the Department of Burns & Plastic and Hand & Foot Surgery of Yulin No.2 Hospital from October 2015 to December 2020 were retrospectively analyzed. After emergency debridement, a plantar medial island flap was used to repair the foot heel defect, a free groin flap was used to repair the medial plantar donor site, and the groin donor site was closed primarily. Postoperatively routine anti-infection, spasmolysis, anticoagulation, expanding treatment were performed after the procedure. The blood supply, survival of the flap, and the healing of the donor area of the flap were observed. The shape and function of the heel were observed in follow-up.Results:Eight patients were enrolled, including 7 males and 1 female, aged from 20 to 71 years, with an average of 32.2 years. There were 5 cases of heel trauma, 1 case of heel squamous cell carcinoma, 1 case of heel frostbite, and 1 case of heel ulcer. The wound area of the heel was 4 cm×3 cm-7 cm×6 cm. The surgical procedure was smooth, and the incision range of the heel island flap and groin flap was 0.5-1.0 cm larger than that of the heel wound. All 8 patients had primary healing after the operation. Follow-up for 3-12 months showed that all patients were satisfied with heel shape, sensory function and walking function. There was no depression, scar hyperplasia, and contracture in the medial plantar donor area, and no local skin ulcer. There is only a linear scar in the groin donor area.Conclusions:Medial plantar island flap combined with a free groin flap can repair the defect of the heel, and the affected foot has good healing, certain sensory function, and satisfactory curative effect.

Objective:To develop a three-dimensional body image stimuli suitable for middle-aged people in China, and verify the validity and reliability of the body image stimuli.Method:According to China and World Health Organization body mass index classification standards of adults, a set of three-dimensional body image stimuli of Chinese middle-aged males and females with different body size was developed by using 3D Studio Max and Adobe Photoshop CC based on the literature and expert consultation method. Forty-two 45- and 59-year-old middle-aged people in Zhengzhou City, Henan Province were recruited to verify the three-dimensional body image stimuli. Through questionnaire survey and physical examination, the coincidence between the selected body type and the actual body type was tested; the body composition was measured by dual-energy absorptiometry (DXA), and the structure validity of the image was tested; the body size satisfaction was investigated by the body image stimuli and the standard questionnaire, and the empirical validity of the image was tested. The repeated survey was conducted 14 days after the initial survey, and three experts were invited to score the current somatotype of the subjects to test the test-retest reliability and inter-rater reliability of the body image stimuli. Pearson, Spearman, Kendall correlation and Kappa consistency analysis were used to evaluate the validity and reliability of the body image stimuli.Results:The average age of 42 subjects was 52.7 years old, including 13 males and 29 females. A group of three-dimensional body image stimuli of middle-aged men and women were developed, and each group included 8 images. 73.8% of the subjects chose the body size consistent with the actual body type, and the weighted Kappa coefficient was 0.755 ( P<0.01). The selected somatotype was positively correlated with body weight and body composition indexes such as fat content, and the Pearson correlation coefficient of construct validity was 0.623-0.717 ( P<0.05). The results of the two surveys were positively correlated, and the Spearman correlation coefficient of test-retest reliability was 0.784-0.821 ( P<0.05). The scores of the three experts on the current somatotype of the subjects were positively correlated, and the Kendall correlation coefficient of inter-rater reliability was 0.818-0.878 ( P<0.05). Conclusion:The development of principle and reference basis of three-dimensional body image stimuli of middle-aged people is reliable, and the validity and reliability of the body image stimuli are good.

Comprehensively improving the new efficiency of high-quality development of public hospitals is the key top-level design for deepening the reform of public hospitals during the"14th Five-Year Plan"period.In view of the changes in the macro environment faced by public hospitals in recent years,such as the cancellation of the addi-tion of pharmaceutical consumables and the deep promotion of the reform of payment methods,as well as the out-standing problems existing at the micro level of public hospital operation,such as the separation of diagnosis and treatment business from economic operation activities,extensive decision-making methods,unreasonable alloca-tion of resources and urgent optimization of processes.By referring to relevant theories such as value management theory,a new"trinity"public hospital lean operation management model based on"integration of industry and fi-nance,lean operation and evidence-based decision-making"is explored and constructed.It breaks the relatively parallel operation barriers of clinical diagnosis and treatment business and economic operation management,innovates a new method of linear staff management with the integration of industry and finance,gives full play to the role of experts in governing hospitals,and integrates the professional committee system driven by"technology+manage-men"into the hospital decision-making staff system to provide data evidence-based basis for assisting the hospital leadership to make scientific decisions.

Objective:To develop a three-dimensional body image stimuli suitable for middle-aged people in China, and verify the validity and reliability of the body image stimuli.Method:According to China and World Health Organization body mass index classification standards of adults, a set of three-dimensional body image stimuli of Chinese middle-aged males and females with different body size was developed by using 3D Studio Max and Adobe Photoshop CC based on the literature and expert consultation method. Forty-two 45- and 59-year-old middle-aged people in Zhengzhou City, Henan Province were recruited to verify the three-dimensional body image stimuli. Through questionnaire survey and physical examination, the coincidence between the selected body type and the actual body type was tested; the body composition was measured by dual-energy absorptiometry (DXA), and the structure validity of the image was tested; the body size satisfaction was investigated by the body image stimuli and the standard questionnaire, and the empirical validity of the image was tested. The repeated survey was conducted 14 days after the initial survey, and three experts were invited to score the current somatotype of the subjects to test the test-retest reliability and inter-rater reliability of the body image stimuli. Pearson, Spearman, Kendall correlation and Kappa consistency analysis were used to evaluate the validity and reliability of the body image stimuli.Results:The average age of 42 subjects was 52.7 years old, including 13 males and 29 females. A group of three-dimensional body image stimuli of middle-aged men and women were developed, and each group included 8 images. 73.8% of the subjects chose the body size consistent with the actual body type, and the weighted Kappa coefficient was 0.755 ( P<0.01). The selected somatotype was positively correlated with body weight and body composition indexes such as fat content, and the Pearson correlation coefficient of construct validity was 0.623-0.717 ( P<0.05). The results of the two surveys were positively correlated, and the Spearman correlation coefficient of test-retest reliability was 0.784-0.821 ( P<0.05). The scores of the three experts on the current somatotype of the subjects were positively correlated, and the Kendall correlation coefficient of inter-rater reliability was 0.818-0.878 ( P<0.05). Conclusion:The development of principle and reference basis of three-dimensional body image stimuli of middle-aged people is reliable, and the validity and reliability of the body image stimuli are good.

Objective:To investigate the clinical effect of medial plantar flap combined with free groin flap in the reconstruction of heel defect.Methods:The patients with heel skin and soft tissue defects admitted to the Department of Burns & Plastic and Hand & Foot Surgery of Yulin No.2 Hospital from October 2015 to December 2020 were retrospectively analyzed. After emergency debridement, a plantar medial island flap was used to repair the foot heel defect, a free groin flap was used to repair the medial plantar donor site, and the groin donor site was closed primarily. Postoperatively routine anti-infection, spasmolysis, anticoagulation, expanding treatment were performed after the procedure. The blood supply, survival of the flap, and the healing of the donor area of the flap were observed. The shape and function of the heel were observed in follow-up.Results:Eight patients were enrolled, including 7 males and 1 female, aged from 20 to 71 years, with an average of 32.2 years. There were 5 cases of heel trauma, 1 case of heel squamous cell carcinoma, 1 case of heel frostbite, and 1 case of heel ulcer. The wound area of the heel was 4 cm×3 cm-7 cm×6 cm. The surgical procedure was smooth, and the incision range of the heel island flap and groin flap was 0.5-1.0 cm larger than that of the heel wound. All 8 patients had primary healing after the operation. Follow-up for 3-12 months showed that all patients were satisfied with heel shape, sensory function and walking function. There was no depression, scar hyperplasia, and contracture in the medial plantar donor area, and no local skin ulcer. There is only a linear scar in the groin donor area.Conclusions:Medial plantar island flap combined with a free groin flap can repair the defect of the heel, and the affected foot has good healing, certain sensory function, and satisfactory curative effect.

ObjectiveTo investigate the levels of serum antibodies against novel coronavirus （SARS-CoV-2） in healthcare workers after one month of natural infection， to explore the influencing factors and their correlations with the levels of antibodies， and to provide reference for strengthening the protection of healthcare workers and preventive intervention in Pudong New Area in Shanghai. MethodsVenous blood samples were collected from 1 102 medical staff in Pudong hospitals one month after infection. The serum levels of new coronavirus specific antibodies IgM， IgG and neutralizing antibodies were detected by chemiluminescent immunoassay. The information of gender， age， position， infection severity， vaccination， basic diseases and use of immunosuppressants were obtained by questionnaire to explore the influencing factors and their correlation with the antibody level. ResultsOne month after natural infection， 99.00% （1 091/1 102） of the subjects were found to be positive for IgG antibody against the new coronavirus， 17.79% （196/1 102） of the subjects were IgM antibody positive， and 99.00% （1 091/1 102） of the samples were positive for the neutralizing antibody. The level of antibody might be influenced by the severity of infection， the time of the last dose of vaccination， and the long-term use of immunosuppressants. The more severe the disease， the stronger the neutralizing antibody response. The antibody level in the people who received the final dose of vaccine within 6 months was higher than that of the people who received the vaccine 6 months ago， and the difference was statistically significant. The antibody levels were low in the subjects who received long-term immunosuppressants. ConclusionThe specific IgM， IgG and neutralizing antibody were found， one month after infection， in the medical workers in Pudong New Area， Shanghai， and the antibody titers were high， which had a good protective effect. The antibody level of the people who were vaccinated within 6 months was higher， it is recommended that people who receive the last vacination more than 6 months should be re-vaccinated with the booster vaccine， to improve the autoimmunity against the novel coronavirus.