The prevalence of diabetes mellitus in China has recently been increasing year by year,and spontaneous skin ulcers in diabetic patients,as one of the most serious complications,often develop on the patient's extremities represented by foot ulcers.Due to the complexity and variety of its pathogenesis,it leads to poor clinical outcomes and difficulty in healing.Thus,pa-tients often face the risk of amputation and death.Therefore,the exploration of mechanisms of the vascular pathogenesis of diabetic delayed-healing wounds and targeted screening of therapeutic agents has become a current research hotspot.Herein,in this paper,we briefly review the role of impaired angiogenesis and vascular dysfunction in diabetic skin ulcers,and the research progress of classical hypoglycemic and natural compounds against vascular lesions is preliminarily summarized to provide a theoretical basis for effective clinical treatment.

Objective:To study the common pathogenesis of gout and rheumatoid arthritis(RA)by bioinformatics analysis.Methods:Microarray expression profiles of peripheral blood mononuclear cells in gout and RA were obtained from the GEO public da-tabase.R language and other tools were used to re-annotates the chip,and then the differential genes(DEGs)of the two were screened and the intersection was taken.The protein-protein interaction(PPI)network and topology analysis of common differential genes(CO-DEGs)were constructed by STRING database and Cytoscape software(including CytoNCA plug-in).The HubGene was screened and validated by ROC curve.Finally,the DAVID online analysis tool was used to perform GO and KEGG functional enrichment analysis of HubGene.Results:There were 9 HubGene screened,they were TNF,RGS1,CD69,IL7R,DDX3X,SOCS3,IFIT1,IFIT3,CCL3.GO enrichment showed that HubGene was mainly involves the regulation of virus,STAT receptor signaling pathway and positive regu-lation of neuroinflammatory response.KEGG enrichment showed that HubGene was mainly involved in Toll like receptor signaling pathway,TNF signaling pathway,JAK-STAT signaling pathway,adipocytokine signaling pathway,RIG-Ⅰ-like receptor signaling pathway and osteoclast differentiation.Conclusion:Using bioinformatics analysis,nine HubGene and related signaling pathways in-volved in the pathogenesis of gout and RA have been identified,which may serve as novel biomarkers and potential targets.

Objective To explore the effect of proprioceptive neuromuscular facilitation(PNF)on the knee abduction torque and vastus medialis-medial gastrocnemius(VM-MG)co-contraction index during walking among the old patients with medial compartment knee osteoarthritis. Methods From March to May,2022,32 old patients with medial compartment knee osteoarthritis in communities in Ji'nan were enrolled and randomly allocated to control group(n=16)and training group(n=16).The training group received PNF and the control group received home-based exercise,for six weeks.The knee abduction torque and VM-MG co-contraction index were measured using an infrared motion capture system synchronized with 3D force plate and electromyography system before and after treatment. Results Three cases in the control group and two cases in the training group dropped off.The first and the second peaks of knee abduction torque,and the VM-MG co-contraction index improved in the training group after treatment(|t|>2.460,P<0.05),and the first and the second peaks of knee abduction torque were better in the training group than in the control group(|t|>2.454,P<0.05). Conclusion PNF may optimize the load distribution between the medial and lateral compartments of the knee in patients with knee osteoarthritis.

Objective:To explore the effects of whole-body fatigue on the balance and ankle proprioception during drop landing of individuals with functional ankle instability(FAI)by comparing the differences in balance and pro-prioception between the FAI group and the control group before and after fatigue. Method:A total of 31 participants with unilateral FAI and 31 healthy participants were included in this study.A static balance test,dynamic balance test,and ankle proprioception test were conducted before and after fa-tigue.Sway distance(D)of the center of pressure(COP),root mean square of the COP(RMS),95％confi-dence ellipse area of the COP movements(95％AREA),normalized reach distance,and the area under the curve(AUC)were calculated and analyzed. Result:Before whole-body fatigue,the static balance,dynamic balance,and ankle proprioception during drop landing in FAI group were significantly lower than those in control group.After whole-body fatigue,the static balance,dynamic balance,and ankle proprioception during drop landing in the FAI group and control group decreased significantly(P＜0.05),and the increase of D,RMS and 95％AREA in FAI group were significant-ly larger than those in control group(P＜0.05),and the decrease of normalized reach distance in the postero-medial and posterolateral directions and AUC were significantly larger than those in control group(P＜0.05). Conclusion:Whole-body fatigue reduced the static balance,dynamic balance,and ankle proprioception,and the reduction was larger in FAI individuals than in healthy individuals.Therefore,whole-body fatigue may in-crease the risk of recurrent ankle sprain by reducing posture control and proprioception in FAI individuals.

Objective:To compare the clinical efficacy between our first generation and second generation dynamic anterior plate-screw system for quadrilateral area (DAPSQ) in the treatment of T-shaped acetabular fractures.Methods:A retrospective study was conducted of the 28 patients with T-shaped acetabular fractures who had been treated at Department of Orthopaedics, General Hospital of Central Theater Command from January 2008 to December 2019. They were divided into 2 groups according to fixation methods. Group A [15 patients, 11 males and 4 females, an age of (43.5±9.1) years] were treated with the first generation DAPSQ while Group B [13 patients, 8 males and 5 females, an age of (42.5±7.0) years] with the second generation DAPSQ. Operation time, intraoperative bleeding, fracture reduction, function of the affected hip and postoperative complications were recorded and compared between the 2 groups.Results:The 2 groups were comparable because there was no significant difference between them in the preoperative general data ( P>0.05). The 28 patients were followed up for 12 to 60 months (average, 35.0 months). The operation time [(193.9±33.3) min] and intraoperative bleeding [(830.8±177.4) mL] for Group B were significantly less than those for Group A [(231.3±40.0) min and (1,043.3±190.7) mL] ( P<0.05). In Group A, according to the Matta scoring, the fracture reduction was rated as excellent in 8 cases, good in 5 and poor in 2; in Group B, the fracture reduction was rated as excellent in 8 cases, good in 4 and poor in one. According to the modified Merle d'Aubigné & Postel scoring at the final follow-up, the function of the affected hip was rated as excellent in 9 cases, as good in 3, as fair in 2 and as poor in one in Group A while as excellent in 9 cases, as good in 2 and as fair in 2 in Group B. There were no statistically significant differences between the 2 groups in reduction quality or in the function of the affected hip ( P>0.05). Follow-up observed hip traumatic arthritis in 2 cases in Group A and in one in Group B. Conclusion:In the treatment of T-shaped acetabular fractures, compared with the first generation DAPSQ, the second generation DAPSQ can shorten operation time and decrease intraoperative bleeding significantly, though both achieve comparable functional outcomes.

Objective:To introduce the standard screw implantation methods and to analyze the biomechanical stability of the second-generation dynamic anterior plate-screw system for quadrilateral area (DAPSQ).Methods:Six adult formalin-preserved corpses were selected to make a complete pelvic specimen. Further, the left high double-column fracture models were made and randomly fixed with second-generation DAPSQ or anterior reconstruction titanium plate and 1/3 tube buttress-plate (ARTPB). The specimens of intact pelvis (IP) group, DAPSQ group and ARTPB group were fixed on a Zwick Z100 material machine and loaded vertically with 200 N, 300 N, 400 N, 500 N, 600 N, 700 N, and 800 N in a simulated sitting position, respectively. The axial displacement and strain changes in the anterior and posterior columns were tested in the three groups. The stiffness was calculated accordingly.Results:The axial compression displacement in the three groups showed an increase trend as well with the vertical load increased from 200 N to 800 N ( F=68.581, P<0.001; F=91.795, P<0.001; F=33.819, P=0.002). The axial displacement in ARTPB group was significantly larger than that in DAPSQ group and IP group ( P<0.05), while the difference between DAPSQ and IP groups was not significant ( P>0.05). Under the vertical load of 600 N, the pelvic axial stiffness of IP group, DAPSQ group, and ARTPB group were 220.72±70.33 N/mm, 185.68±48.49 N/mm and 135.83±60.58 N/mm, respectively. The axial stiffness of ARTPB group was significantly lower than that in DAPSQ group and IP group ( t=5.345, P=0.003; t=6.443, P=0.001), while the difference between DAPSQ and IP groups was not significant ( t=2.138, P=0.086). There were no significant differences of the strain values in anterior column among the three groups during the load increasing from 200 N to 800 N ( P>0.05). With the load increasing from 500 N to 800 N, the strain values of the posterior column in ARTPB group were significantly greater than those of IP and DAPSQ groups ( P<0.05). However, the differences between IP and DAPSQ groups were not statistically significant in strain values of the posterior column ( P>0.05). Conclusion:Compared with anterior reconstruction titanium plate and 1/3 tube buttress-plate, acetabular double-column fracture model fixed with the second-generation DAPSQ has less axial compression displacement but with greater axial stiffness. The stress change in the posterior columns of the acetabulum is like in IP. Therefore, the second-generation DAPSQ has reliable biomechanical stability.

B lymphoma Moloney murine leukemia virus insertion region 1 (BMI1), a core member of polycomb repressive complex 1 (PRC1), has been intensely investigated in the field of cancer epigenetics for decades. Widely known as a critical regulator in cellular physiology, BMI1 is essential in self-renewal and differentiation in different lineages of stem cells. BMI1 also plays a significant role in cancer etiology for its involvement in pathological progress such as epithelial-mesenchymal transition (EMT) and cancer stem cell maintenance, propagation, and differentiation. Importantly, overexpression of BMI1 is predictive for drug resistance, tumor recurrence, and eventual therapy failure of various cancer subtypes, which renders the pharmacological targeting at BMI1 as a novel and promising therapeutic approach. The study on prostate cancer, a prevalent hormone-related cancer among men, has promoted enormous research advancements in cancer genetics and epigenetics. This review summarizes the role of BMI1 as an oncogenic and epigenetic regulator in tumor initiation, progression, and relapse of prostate cancer.

B lymphoma Moloney murine leukemia virus insertion region 1 (BMI1), a core member of polycomb repressive complex 1 (PRC1), has been intensely investigated in the field of cancer epigenetics for decades. Widely known as a critical regulator in cellular physiology, BMI1 is essential in self-renewal and differentiation in different lineages of stem cells. BMI1 also plays a significant role in cancer etiology for its involvement in pathological progress such as epithelial-mesenchymal transition (EMT) and cancer stem cell maintenance, propagation, and differentiation. Importantly, overexpression of BMI1 is predictive for drug resistance, tumor recurrence, and eventual therapy failure of various cancer subtypes, which renders the pharmacological targeting at BMI1 as a novel and promising therapeutic approach. The study on prostate cancer, a prevalent hormone-related cancer among men, has promoted enormous research advancements in cancer genetics and epigenetics. This review summarizes the role of BMI1 as an oncogenic and epigenetic regulator in tumor initiation, progression, and relapse of prostate cancer.
Animals ; Gene Expression Regulation, Neoplastic ; Humans ; Lymphoma, B-Cell/genetics* ; Male ; Mice ; Moloney murine leukemia virus/genetics* ; Mutagenesis, Insertional/genetics* ; Polycomb Repressive Complex 1/genetics* ; Prostatic Neoplasms/genetics*

Objective To analyze the differences of nutritional parameters and body composition in the protein energy wasting (PEW) patients on maintenance hemodialysis with or without diabetic kidney disease (DKD).Methods The patients with PEW were screened by subjective global assessment (SGA) from patients on maintenance hemodialysis from March 2014 to June 2015 in the Fourth Central Hospital of Tianjin.Anthropometric and nutritional parameters were collected before dialysis, and body composition and energy expenditure were examined by the bioelectrica] impedance method.The indexes of the two groups were compared.Results A total of 301 patients on maintenance hemodialysis (DKD 112, non-DKD 189), whose average age was (63.05±14.42) years old, were screened.Among which, 75 patients were diagnosed with PEW, and the overall prevalence rate was 24.92％, including 41 DKD cases with the prevalence of 36.61％ (41/112) and 34 non-DKD cases with the prevalence of 17.99％ (34/189).Compared with uon-PEW patients, the body mass index (BMI), hemoglobin (Hb), albumin (ALB), and total cholestero (TC) of patients with PEW were significantly lower, and C-reactive protein (CRP) were significantly higher (P＜0.05).In the DKD group, the average age of PEW onset ((59.61±13.74) years old), the maintenance dialysis time before PEW ((64± 12.50) months), ALB ((31.34±3.32) g/L), and TC ((4.17±0.95) mol/L) were all lower than those in the non-DKD group ((70.68±14.05) years old, (116.61 ±32.85) months, (32.34±4.64) g/L, (4.95±1.52) mol/L) (P＜ 0.05), respectively.The body composition results showed that muscle mass in the DKD group ((24.84±3.36) kg/ (45.32±6.95)％) was less than that of the non-DKD group ((28.53±3.75) kg/(50.67±7.28)％) (P＜0.05).Conclusions This study indicates that compared with non-DKD dialysis patients, the prevalence of PEW in dialysis patients with DKD is higher, onset age of PEW is younger, the duration of dialysis is shorter, and the muscle consumption is more obvious.

Objective To explore the correlation between socioeconomic status (SES) and mortality of patients with diabetic kidney disease (DKD) on hemodialysis by using a retrospective cohort study.Methods Cases with DKD on hemodialysis in the Fourth Central Hospital of Tianjin from Jan.2006 to Mar.2010 were retrospectively reviewed.SES, including education, the average monthly income of household members, occupation type, was surveyed among all the patients.According to the SES, the patients were divided into two groups.The 1-year, 3-year, and 5-year mortality rates of the two groups were compared respectively.Relative risk (RR), attributable risk (AR) and attributable risk percentage (ARP) were calculated.Further, the relevance of SES and other variables were analyzed.Results The baseline of two groups in age, sex, duration of diabetes, kidney disease progression was consistent and comparable.In the low SES group, 1-year death RR was 1.08, AR was 1.5％ and ARP was 8.1％.Three-year death RR was 1.38, AR was 10.9％ and ARP was 27.6％.Five-year death RR was 1.57, AR was 24.5％ and ARP was 36.4％.Correlation analysis showed that SES scores were negatively correlated to body mass index (BMI), glycated hemoglobin (HbA1c) and C-reactive protein (CRP) (r=-0.542,-0.314,-0.392, P＜0.01), while SES scores were positively correlated to serum albumin (ALB), physiological function, general health, social function, emotional function and mental health scores (r=0.539, 0.243, 0.254, 0.268, 0.253, 0.255, P＜0.01).Conclusions SES is an important social-influencing factor of mortality in patients with DKD,and may have effects on long-term survival of hemodialysis patients by influencing the quality of life, glycemic control, nutrition and inflammation.