BACKGROUND:Recent studies indicate that osteolysis surrounding prosthesis is the main reason causing artificial joint loosening.The reason and development process of osteolysis surrounding prosthesis are not fully understood.OBJECTIVE:To observe the pathological changes of limiting membrane surrounding sterile loosened prosthesis of artificial hip ioint and compare that with cicatricial tissue surrounding internal fixation.DESIGN,TIME AND SETTING:Histological observation was done at The Second Hospital of Soochow University between September 2000 and December 2005.PARTICIPANTS:Limiting membrane surrounding prosthesis of eight artificial hip joints overhauled for loosening were removed during operation for pathological examination.METHODS:Specimens were fixed with 10%formaldehyde solution and embedded with paraffin,and were cut into sections,the sections were stained by hematoxylin-eosin(HE)staining and immunohistochemistry staining.The specimens were done bacterial culture.MAIN OUTCOME MEASURES:Histopathological changes.RESULTS:Wear particles,cellular proliferation and osteolytic factors were found in the limiting membrane surrounding loosening prosthesis.The bacterial culture results of the specimens were negative.CONCLUSION:Wear particles generated in the using process of prosthesis can activate osteolytic factors produced by inflammatory cells and is an important reason leading to sterile loosening of prosthesis.

Objective To evaluate the differences of the thinnest-point corneal thickness (TCT) decrease after three different corneal crosslinking (CXL) protocols for progressive keratoconus.Methyds Retrospective clinical case study.From August 2010 to November 2015,consecutive 85 patients (110 eyes) with progressive keratoconus were enrolled and treated with CXL in Department of Opthalmology,Navy General Hospital.21 patients of 25 eyes underwent standard epithelium-off corneal crosslinking (S-CXL),14 patients of 22 eyes underwent 1 g · L-1 riboflavin-sodium lactate Ringer's solution iontophoresis-assisted CXL (I-CXLa),and 50 patients of 63 eyes underwent 0.1％ riboflavin-distilled water solution I-CXLb.Preoperative and postoperative TCT were measured by ALLEGRO oculyzer.The differences of TCT decrease after treatment were compared among the three CXL protocols.Results The differences of TCT from baseline after 3 months,6 months and 12 months in the S-CXL group were (-14.93 ±27.16) μm,(-31.94 ±22.89) μm,(-27.71 ±26.01) μm,respectively,the I-CXLa group were (-20.14 ± 19.09) μm,(-10.10 ± 24.28) μm,(-7.11 ± 22.26)μm,respectively,the I-CXLb group were (-28.08 ± 26.14) μm,(-21.08 ± 25.62) μm,(-15.91 ± 19.19)μm,respectively.Three months after treatment,the differences of TCT decrease in the three groups was not statistically significant (P =0.188);Six and 12 months after treatment,the differences between S-CXL and I-CXLa were statistically significant (all P ＜0.05),but the differences between S-CXL and I-CXLb,between I-CXLb and I-CXLa showed no significant difference (all P ＞ 0.05).Conclusion Six and 12 months after treatment,TCT decrease is related to the CXL protocol.TCT decrease degree may reflect the intensity of crossinking.TCT decrease in I-CXLb is smaller than that in S-CXL,but there is no statistical difference.

This study was aimed to discuss the influence of specific acupoint acupuncture therapy to the serum angiogenesis factor of high fat diet obese mouse models. Mice were randomly divided into the blank control group , acupuncture control group , model control group , and acupuncture treatment group . There were 6 mice in each group . Obese mouse models were induced after 15-week high fat diet . The specific acupoint acupunc-ture therapy was used as an intervention treatment method for 10 days . The enzyme-linked immunosorbent as-say (ELISA) was used in the detection of serum insulin, vascular endothelial growth factor (VEGF), soluble vascular endothelial growth factor receptor , leptin and the level of nitric oxide in mice . The results showed that the serum insulin , nitric oxide and leptin level in the obese mouse models were increased . However , there were no obvious changes on the vascular endothelial growth factor and soluble vascular endothelial growth fac-tor receptor level . The specific acupoint acupuncture therapy can obviously reduce the level of serum nitric ox-ide and leptin, and improve the content of vascular endothelial growth factor in obese mouse models. However, there were no influence on the level of blood glucose and soluble vascular endothelial growth factor receptor . It was concluded that the specific acupoint acupuncture therapy method had preferable antiobesity action . Its mechanism of action may be related to the regulation of angiogenesis .

Objective To investigate the safety and clinical response of dendritic cells (DC)vaccine loaded with HLA-A2-restricted peptides MAGE-3、 Tyr、 MART-1 and GP-100 against malignant melanoma. Methods Twenty three HLA-A2 positive patients with malignant melanoma were enrolled.Peripheral blood mononuclear cells were separated into adherent cells for induction of DC loaded with four peptides. DC vaccine was administered subcutaneously once a week in inguinal region. The immunological responses and clinical responses were evaluated. Results Dendritic cell vaccination were well tolerated in all patients and there was no toxicity observed. Serum levels of IL-2, IL-12 and IFN-γincreased significantly after first vaccination and fourth vaccination. The positive rate of DTH test was 50% (5/10), and 2 fold increase of CD8+ IFN-γ+ cells were observed in 6 of 10 patients. Stable disease was observed in 11 of 23 patients, one patient had a complete metastasis regression, four patients had 50% regression of metastasis,four patients had a minor response, and disease progressed in three patients. Conclusion DC vaccines loaded with peptides MAGE-3、 Tyr、 MART-1 and GP-100 can elicit non-specific and specific immune responses, leading disease control. DC vaccine is considered one of safe and effective treatments for malignant melanoma.

Objective To investigate the recurrence and satisfaction of paracentesis and segment resection on patients with early plasma cell mastitis,and to choose a more effective and cost-effective treatment.Methods Eighty-nine patients with early plasma cell mastitis received paracentesis in the treatment group and 101 cases received segment resection therapy in the comparison group.The recurrence and satisfaction of patients with early plasma cell mastitis in the two groups were compared.Results (1) The recurrence rates of patients with early plasma cell mastitis received paracentesis or segment resection were 29.21％ and 21.78％,without significant difference (x2 =5.437;P =0.285).(2) No significant differences in pain degree and time of therapy Were observed (P =0.323;P =0.102),but obvious difference in aesthetic measure was found between two groups (P =0.01).Conclusion Ultrasound guided puncture is used to treat patients with early plasma cell mastitis resulted in the therapeutic effect of segmental excision and better patient satisfaction,which has important significance and clinical promotion value for early plasma cell mastitis treatment.

Objective:To investigate the effect of early ambulation time on lower limbs muscle strength and fear of falling in patients with total knee arthroplasty, so as to provide basis for promoting the postoperative rehabilitation of patients undergoing total knee arthroplasty.Methods:A total of 210 patients after unilateral total knee replacement from July 2018 to December 2019 in the Second Affiliated Hospital of Soochow University were included and assigned to experimental group 1, experimental group 2 and experimental group 3 by random digits table method, each group contained 70 cases, and the patients began ambulation at 16, 20, 24 hours after knee replacement, respectively. The peak torque (PT) of knee joints flexors and extensor as well as hamstrings quadriceps ratio (H/Q) were compared among three groups at 1 week, 1 month and 3 months after knee replacement. The fall efficiency was evaluted by Modified Fall Efficacy Scale (MFES), the fear of falling rate was conducted by single item method.Results:After 1 month of knee replacement, the PT of knee joints flexor and extensor and H/Q were (18.73±5.49) N·m, (37.56±7.76) N·m, (48.08±9.19)% and (18.44±5.27) N·m, (37.04±7.07) N·m, (47.49±9.30)% in the experimental group 1 and experimental group 2, which were higher than those in the experimental group 3(16.38±2.85) N·m, (33.75±6.75) N·m, (43.48±7.17)%, the differences were statically significant ( t values were 2.316-3.057, P<0.05). After 1 week of knee replacement, the fear of falling rate were 72.3%(47/65) and MFES scores were (3.14±0.58) points in the experimental group 1, 53.7%(36/67), (3.81±0.65) points and 50.8%(32/63), (3.87±0.74) points in the experimental group 2 and experimental group 3, the fear of falling rate significantly increased and MFES scores significantly decreased in the experimental group 1 compared to the experimental group 2 and experimental group 3, the differences were statistically significant ( χ2 values were 5.780, 4.878, t values were 6.221, 6.129, P<0.05). Conclusions:Twenty hours after knee replacement is the best time for ambulation, which can shortern the time for lower limbs muscle strength recovery and reduce the risk of fear of falling.

Objective:To investigate the uncertainty level of caregivers of children with imperforate anus, and determine the influence factors.Methods:Two hundred and twenty-nine caregivers were enrolled from three tertiary children′s hospital in Eastern China. The caregivers completed the Perception of Uncertainty Scale, Parent Stigma Scale and Social Support Scale. The demographic information of caregivers and affected children were also collected during the survey.Results:The average score of uncertainty of caregivers was (72.58±14.06) points, and multiple analysis showed that education level, the acceptance level of disease, social support and stigma were independent determinants of uncertainty ( P<0.01), and these factors could account for 26.9% of the variance. Conclusions:The caregivers of children with imperforate anus experience a high level of uncertainty, especially those with low education level, share low acceptance level of disease, receive low social support and experience higher level of stigma.

Objective To explore the mediation effect of emotional intelligence in social support and subjective happiness,and to provide practical guidance for scientific management of nursing talents in hemodialysis center.Methods Using a cross-sectional study,by a proportional stratified sampling method,from October 2022 to January 2023,800 hemodialysis nurses in Guangzhou area were selected as the respondents,using the general data adjustment table,general well-being schedule(GWB),social support rating scale(SSRS),and wong law emotional intelligence scale(WLEIS-C).The pearson correlation was used to analyze the correlation between emotional intelligence,social support and subjective happiness of hemodialysis nurses in Guangzhou;the process macro program was used to explore the mediation effect of emotional intelligence in social support and subjective happiness in Guangzhou.Results 707 valid questionnaires were collected,and the effective recovery rate was 88.38%.The total score of subjective well-being of hemodialysis nurses in Guangzhou was(75.67±8.17),the total score of emotional intelligence(82.29±16.20),and the total score of social support(38.76±8.40).The total score of social support was positively associated with the total score of subjective well-being(r=0.517,P<0.01)and the total score of emotional intelligence(r=0.633,P<0.01),the total score of emotional intelligence was positively related to the total score of subjective well-being(r=0.634,P<0.01).Social support had a direct effect on subjective well-being(β=0.165,95%CI:0.103-0.261),and indirectly affected it through the partial mediation effect of emotional intelligence(β=0.095,95%CI:0.069-0.142),and the indirect mediation effect accounted for 36.54%of the total effect.Conclusion Guangzhou area hemodialysis nurses subjective well-being is in upper level,and emotional intelligence in hemodialysis nurses social support and subjective happiness plays intermediary effect,managers should focus on hemodialysis nurses emotional intelligence,take various measures to improve their emotional intelligence level,enhance social support,so as to improve hemodialysis nurses subjective well-being.