Development and Validation of a Predictive Risk Model for Vision-threatening Diabetic Retinopathy in Patients with Type 2 Diabetes / 中山大学学报(医学科学版)

ObjectiveTo develop and validate a predictive risk model for vision-threatening diabetic retinopathy in patients with type 2 diabetes using readily accessible clinical data， which may provide a convenient and effective prediction tool for early identification and referral of at-risk populations. MethodsA nomogram model was developed using a dataset obtained from patients with T2DM who participated in the Guangzhou Diabetic Eye Study from November 2017 to December 2020. Logistic regression was used to construct the model， and model performance was evaluated using receiver operating characteristic curve， Hosmer-Lemeshow test， calibration curve and decision curve analysis. The model underwent internal validation through the mean AUC of k-fold cross-validation method， and further external validation was conducted in the Dongguan Eye Study. ResultsA total of 2 161 individuals were included in the model development dataset， of whom 135 （6.25%） people were diagnosed with VTDR. Age （P＜0.001，OR=0.927，95%CI：0.898~0.957） and body mass index （P＜0.001，OR =0.845，95%CI：0.821~0.932） were found to be negatively correlated with VTDR， whereas diabetes duration （P＜0.001，OR=1.064，95%CI：1.035~1.094）， insulin use （P =0.045，OR =1.534，95%CI：1.010~2.332）， systolic blood pressure （P＜0.001，OR =1.019，95%CI：1.008~1.029）， glycated hemoglobin （P＜0.001，OR =1.484，95%CI：1.341~1.643）， and serum creatinine （P＜0.001，OR =1.017，95%CI：1.010~1.023） were positively correlated with VTDR. All these variables were included in the model as predictors. The model showed strong discrimination in the development dataset with an area under the receiver operating characteristic curve （AUC） of 0.797 and in the external validation dataset （AUC 0.762）. The Hosmer-Lemeshow test（P＞0.05）and the calibration curve displayed good agreement. Decision curve analysis showed that the nomogram produced net benefit in the two datasets. ConclusionsIndependent factors influencing VTDR include age， duration of diabetes mellitus， insulin use， body mass index， systolic blood pressure， glycosylated hemoglobin， and serum creatinine. The nomogram constructed using these variables demonstrates a high degree of predictive validity. The model can serve as a valuable tool for early detection and referral of VTDR in primary care clinics. Therefore， its application and promotion are highly recommended.

Effects of DNMT3A on mouse cardiac fibroblast proliferation and migration under high glucose environment / 中国药理学通报

Aim To investigate the effect of DNA methyltransferase 3A (DNMT3A) on the proliferation and migration of cardiac fibroblasts (CFs) in C57 mice under high glucose environment. Methods The hearts of C57 mice were taken from 1 to 3 days. After cutting and digesting, CFs were extracted by differential adherance centrifugattion and observed under microscope. After cell attachment, the cells were cultured under low glucose (5.5 mmol • L

Bioinformatics analysis and key gene verification of sepsis myocardial macrophage microarray data based on GEO database / 中华心血管病杂志

Objective: Bioinformatics analysis was used to screen differentially expressed genes (DEGs) in macrophages of sepsis myocardial injury and to verify key genes. Methods: Experiment 1 (gene chip and bioinformatics analysis): The gene chip data GSE104342 of cardiac macrophages in septic mice was downloaded from Gene Expression Omnibus database. DEGs were obtained by R language analysis. DAVID online database was used to obtain gene ontology and kyoto encyclopedia of genes and genomes (KEGG) enrichment analysis of DEGs. STRING online database was used for protein-protein interaction network analysis of DEGs, and then key genes were screened by using Cytoscape software and molecular complex detection (MCODE) plug-ins. Experiment 2 (sepsis model construction and related protein verification): Ten male C57BL/6 mice, aged 8-14 weeks. Five mice were randomly selected as control group, and 5 mice were selected as the sepsis group by building a mice sepsis model in vivo. Echocardiography was used to detect the cardiac function. Hematoxylin-eosin staining was used to assess the cardiac morphology. TUNEL staining was used to evaluate cardiomyocyte apoptosis. Immunofluorescence staining was used to detect the expression of differentiation antigen cluster 206 (CD206),inducible nitric oxide synthases (iNOS),F4/80,suppressor of cytokine signaling 3 (Socs3) ,interleukin 1 receptor antagonist (Il1rn) and chemokine C-C motif ligand 7 (Ccl7) protein. RAW264.7 macrophages were cultured in vitro and divided into 2 groups: LPS groupstimulated by lipopolysaccharide (LPS, 1 mg/L) and blank control group treated with equal-volume phosphate buffer solution. Reverse transcription-polymerase chain reaction (RT-PCR) was used to evaluate the expression of Socs3, Il1rn and Ccl7 in vitro. Results: Experiment 1: 24 647 genes were screened in GSE104342 dataset and 177 genes (0.72%) were differential expression, including 120 up-regulated genes and 57 down-regulated genes. Gene ontology enrichment analysis showed that DEGs were mainly involved in inflammatory response, immune response, apoptosis regulation and antigen processing and presentation. KEGG signaling pathway analysis showed that DEGs in cardiac macrophages of septic mice were mainly enriched in cytokine-cytokine receptor interaction, tumor necrosis factor signaling pathway, NOD like receptor signaling pathway. Three hub genes were obtained by STRING and Cytoscape analysis, including Socs3, Il1rn and Ccl7. Experiment 2: In vivo, it was found that compared with the control group, the cardiac function of the sepsis mice decreased significantly, the myocardial cells were significantly edema, inflammatory cell infiltration, myocardial fiber rupture, some myocardial nuclei dissolved and disappeared, and the cardiomyocyte apoptosis increased, suggesting that the sepsis myocardial injury model of mice was successfully constructed. Compared with the control group, the expression of CD206 in the myocardium of septic mice was down-regulated, the expression of iNOS, F4/80, Socs3, Il1rn and Ccl7 were up-regulated. In addition, there was co-localization between Socs3, Il1rn, Ccl7 and F4/80 protein. Compared with the blank control group, the expression of Socs3, Il1rn and Ccl7 significantly upregulated after LPS intervention in vitro by RT-PCR. Conclusions: The selected key genes Socs3, Il1rn and Ccl7 were up-regulated in myocardial macrophages of septic mice. Socs3, Il1rn and Ccl7 are expected to become new targets for the diagnosis and treatment of sepsis cardiac injury.

A Detachable Lens-Induced Myopia Model in Mice Based on Clasp Design / 中山大学学报(医学科学版)

ObjectiveTo explore a new model for lens-induced myopia （LIM） in mice and describe the changes of diopter and ocular biological parameters. MethodsTwenty-seven 21-day-old C57BL/6 mice were divided into three groups （ratio， 5：1：3）： LIM group， plano lens （PL） group and normal control （N） group. The right eyes were intervened while the left eyes were left as control. The refraction was detected with retinoscopy after the pupils were dilated with compound topicamide and ocular axial length was measured by optical coherence tomography （OCT） in vivo at baseline and 1， 2， 3， and 4 weeks after the intervention. Paired t test was performed between left and right eyes within each group. Welch's ANOVA was used for comparison among the three groups. When the difference was statistically significant， the Dunnett's T3 was used to correct P value for pairwise comparison. ResultsAfter 2 weeks of defocus induction， the refraction of the intervened eye in LIM group shifted to myopia about （-2.55±1.54） D（t=6.430， P＜0.000 1）， and the ocular axial length （AL） increased about （0.051±0.024） mm（t=7.837， P＜0.000 1）. The difference of interocular change in refraction in LIM group compared with PL group and N group was -2.30 D （P=0.014） and -2.55 D （P＜0.000 1）， respectively. The difference of interocular change in AL in LIM group was 0.048 mm （P<0.000 1） and 0.047 mm （P<0.000 1） compared with that in PL group and N group， respectively. With the extension of intervention time， the degree of myopia drift increased. ConclusionIn this study， a clasp-based and detachable LIM model was described and validated. After 2 weeks of intervention， the refraction shifted significantly toward myopia and the AL increased significantly. The LIM model is simple to construct and can provide a reference for the model construction of animal experiments in myopia research.

Analysis of three minimally invasive methods in the treatment of the fifth metacarpal neck fracture / 中国骨伤

OBJECTIVE@#To explore the effective method of applying Chinese medicine manipulative repositioning Kirschner wire fixation for minimally invasive treatment of fractures of the neck of the fifth metacarpal.@*METHODS@#From January 2018 to November 2021, 90 patients with closed fractures of the neck of the fifth metacarpal bone were treated minimally invasively with closed repositioning Kirschner wires, all fractures AO type was type A. All patients were divided into three groups according to the mode of internal fixation involving 30 cases in the crossed Kirschner's wire group, 30 cases in the transverse Kirschner's wire group, 30 patients in the intramedullary Kirschner's wire group. By comparison, gender, age, disease duration, and preoperative neck-stem angle were not significant. The postoperative fifth metacarpal neck-stem angles, postoperative fifth metacarpophalangeal joint flexion mobility and fifth metacarpophalangeal joint extension hyperextension angles were compared among three groups. The overall clinical efficacy was evaluated according to the patient outcomes of surgery-hand/arm(POS-Hand/Arm) scoring system.@*RESULTS@#All patients had 12-month follow-up and achieved bony union without malunion. There was no significant difference in the 5th metacarpal neck-stem angle, the fifth metacarpophalangeal joint flexion angle and the fifth metacarpophalangeal joint extension hyperextension angles among three groups at 12 months after surgery(P>0.05). There was no significant difference in physical activity and symptom scores in POS-Hand/Arm scores at 12 months after surgery(P>0.05), psychological status and aesthetic score among three groups(P<0.05) and between cross and transverse Kirschner wire groups(P>0.05). The three POS-Hand/Arm total scores were statistically different(P<0.05), between the crossed and transverse(P>0.05), and the intramedullary group had the highest POS-Hand/Arm scores.@*CONCLUSION@#All three techniques of Kristener's wire fixation could achieve minimally invasive treatment, and patients have need for cosmetic and early activity, and the author recommend minimally invasive intramedullary fixation with manipulative repositioned Kristen wires as the preferred procedure.

Analysis on disease burden of occupational coal workers′ pneumoconiosis in Anhui Province / 中国职业医学

@# Objective To analyze the disease burden caused by occupational coal workers' pneumoconiosis (CWP) in Anhui Methods Province. A total of 1 649 patients with occupational CWP diagnosed in Anhui Province from 1950 to 2019 were selected as the study subjects using a retrospective study method. Age, gender, survival time, location, working age of disease onset, age of death, stage and date of diagnosis of CWP, comorbidities at the time of investigation, hospitalization and outpatient expenses in the past year, cost of absence from work, cost of absence from work of caregivers, and cost of nutrition and transportation were investigated. The years of life lost, years lived with disability (YLDs), disability adjusted life years (DALYs) Results and economic losses were calculated. Among these patients, 1 405 cases survived and 244 cases died. In the age range - - - of 20.0 70.0 years, the YLDs of surviving patients were 2.12 22.20 (8.19±3.59) person years. The YLDs of patients with disease vs - P complications was higher than that of patients without complications [(8.55±3.95) (7.87±3.21) person years, <0.01]. The total - - DALYs of the patients was 14 031.59 person years, and the average per capita DALYs was 8.51 person years. Its YLDs accounted for 82.0 % of the total DALYs. The total economic loss caused by CWP in the 1 405 surviving patients was 354.903 0 Conclusion million yuan, and the average per capita economic loss was 252 600 yuan. The disease burden caused by CWP is relatively high in Anhui Province. In addition to early detection, diagnosis and treatment, it is necessary to focus on prevention and treatment of CWP complications to reduce the disease burden.

Meta-analysis of unilateral resection-recession versus plication-recession for exotropia / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To compare the effectiveness of unilateral lateral rectus recession-medial rectus resection(RR))and lateral rectus recession-medial rectus plication(RP)in the treatment of exotropia. METHODS: Evidence-based medicine research. A systematic database search was conducted Medline, Embase, Web of Science, the Cochrane Register of Controlled Trials and so on from August 2011 to August 2021. Related studies meeting the inclusion criteria were included in our study. The main outcome measures were as follows: success rate and postoperative deviation. Mean difference(MD)and odds ratio(OR)with 95% confidence interval(CI)were statistical analyzed as measurement data and continuous variables statistics. RESULTS: A total of two randomized controlled studies and five retrospective studies were included. The Meta-analysis results showed that the success rate of surgery was similar for RP group compared with RR group(OR=0.65, 95%CI:0.39-1.07, P=0.09). There was no difference in the incidence of poor postoperative prognosis of the two groups(the undercorrection and overcorrection rates)(OR=1.59; 95%CI: 0.92-2.74, P=0.10; OR=4.43; 95%CI: 0.69-28.18, P=0.12). There were no significant differences in postoperative deviation and the amount of external oblique drift(MD=0.75, 95%CI: -0.27-1.76, P=0.15; MD=-0.34, 95%CI: -1.30-0.63, P=0.50). CONCLUSION: The success rate of RP and RR surgery is close to the incidence of poor postoperative prognosis, moreover, there was no significant difference between the deviation and the amount of external oblique drift after the two surgeries, RP is an effective surgical procedure for the treatment of exotropia.

Evaluation of the quality of life in intermittent exotropia by the Chinese version of the intermittent exotropia questionnaires / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To evaluate the effects of intermittent exotropia(IXT)on the quality of life of children and their parents using the Chinese version of intermittent exotropia questionnaires(CIXTQ).METHODS: The scores of CIXTQ were collected from IXT children and the same number of age-matched control children in department of ophthalmology, Nanjing Children's Hospital from June 2020 to June 2021. They were the Chinese version of intermittent exotropia questionnaires scores(CIXTQ, for children to assess their health related quality of life), the parental proxy CIXTQ(pp-CIXTQ, for parents to assess children's life quality)scores and the parent CIXTQ(p-CIXTQ, for parents to assess their life quality)scores. To explore: 1)The differences in the CIXTQ, pp-CIXTQ and p-CIXTQ scores between IXT children and the normal children; 2)The relationship between the CIXTQ and pp-CIXTQ scores in IXT children; 3)The factors affecting the quality of life in children with IXT.RESULTS: A total of 156 patients with IXT and 156 age-matched normal children were included. CIXTQ scores in the children with IXT group was lower than that in the control group(t=-12.915, P&#x003C;0.001). In IXT group, there was no difference observed in CIXTQ or pp-CIXTQ scores(t=-0.718, P=0.473). As suggested by item-level analysis, children in the IXT group were more concerned about how others think of them and their vision, whereas parents were more concerned about whether the child needs surgery, and whether the permanent damage of strabism caused to the eyes of their children and whether strabismus affects their social life.CONCLUSION: The CIXTQ performed better in distinguishing the children with IXT and those with normal condition, and it can accurately predict the impact of IXT on children, and benefit to make personalized treatment regimens.

Investigation on myopia of junior high school students in Enshi, Hubei Province with different selenium content / 国际眼科杂志(Guoji Yanke Zazhi)

AIM:To investigate the myopia of junior high school students in Enshi, Hubei province with different selenium content, and analyze the correlation between the level of serum selenium, hair selenium and myopia.METHODS:A cross-sectional study. A total of 600 students from grades 1-3 of junior high schools(100 students in each grade)in selenium-rich(selenium in soil ≥1.28mg/kg)and selenium-deficient(selenium in soil &#x003C;1.28mg/kg)areas were randomly selected from September 2020 to September 2021, respectively. The level of serum selenium, hair selenium, glutathione peroxidase(GSH-Px)and myopia condition were determined.RESULTS:The serum and hair selenium of myopic group(n=244, 40.7%)were 75.14±11.16μg/L and 0.51±0.01μg/g, respectively. Those in the non-myopic group(n=356, 59.3%)were 110.24±12.14μg/L and 0.68±0.02 μg/g, respectively. The serum selenium and hair selenium in the two groups were different(all P&#x003C;0.01). The serum selenium of 300 students in the selenium-deficient area was 76.74±11.25μg/L, the hair selenium was 0.45±0.01 μg/g, and the number of myopia cases was 154(51.3%); The serum selenium of 300 students in selenium-rich areas was 102.31±10.26 μg/L, the hair selenium was 0.71±0.02 μg/g, and the number of myopia cases was 90(30.0%), the serum and hair selenium in the selenium-rich areas were significantly higher than those compared with the students in selenium-deficient areas, and the myopic incidence was significantly reduced(all P&#x003C;0.01). The level of GSH-Px of the two areas was 114.65±12.12U/L vs 75.34±13.20U/L(Z=37.994, P&#x003C;0.01). There is a negative correlation between serum and hair selenium and the myopic incidence(r=-0.542, -0.621, P&#x003C;0.05).CONCLUSION:Serum and hair selenium is significantly associated with myopia of junior high school students in Enshi, which may provide new ideas for the clinical prevention and treatment of myopia.

Progress of parathyroid hormone regulating bone metabolism via different signaling pathways / 中国骨伤

Parathyroid hormone is one kind of osteoanabolic agents widely used in clinic for osteoporosis. However, parathyroid hormone needs to be further optimized in the treatment of osteoporosis due to its two way regulatory effect of bone formation with low-dose intermittent treatmentand bone resorption with high-dosecontinuous treatment. Hence, based on the molecular mechanism of parathyroid hormone regulating bone metabolism, we conclude that parathyroid hormone regulates bone metabolism mainly through the following signaling pathways: (1) Gs/cAMP/PKA signaling pathway, whichis the main mechanism of parathyroid hormone regulating bone metabolism to lead to bone formation or bone resorption. (2) G

Effect of Astragalus Polysaccharide on Radiosensitivity and Epithelial-mesenchymal Transition of Human Nasopharyngeal Carcinoma CNE-1 Cells / 中国实验方剂学杂志

Objective:Astragalus polysaccharide (APS) was used in combination with ionizing radiation (IR) to investigate the mechanism of APS on the radiosensitivity of human nasopharyngeal narcinoma CNE-1 cells and the epithelial-mesenchymal transition (EMT). Method:Cell counting kit-8 (CCK-8) was used to detect the cytotoxicity of different concentrations of APS (0，6.25，12.5，25，50，100，200 g·L-1) on CNE-1 cells. Colony formation assay was used to calculate the survival fraction (survival fraction, SF) of CNE-1 cells treated with 12.5 g·L-1 APS combined with different radiation doses (0，2，4，6 Gy). The linear quadratic equation mathematical model (LQ) was used to draw the radiosensitivity curve according to SF value. Cell scratch and transwell chamber test were used to detect the migration and invasion ability of cells in each group. The apoptosis of cells in each group was detected by flow cytometry, Western blot was used to detect the expressions of EMT markers, apoptosis markers and protein kinase B/extracellular regulated protein kinases (Akt/ERK) pathway proteins in each group. Result:The results of colony formation assay and radiosensitivity curve showed that the combination of non-toxic dose of 12.5 g·L-1 APS and radiation dose of 4 Gy could significantly increase the radiosensitivity of CNE-1 cells. Compared with blank group and IR group, APS combined with IR could significantly inhibit the migration and invasion of CNE-1 cells (P<0.05), and increase the rate of apoptosis (P<0.05). In addition, compared with the blank group and the IR group, APS combined with IR could significantly down-regulate the expressions of N-cadherin, p-Akt and p-ERK, and significantly up-regulate the expressions of E-cadherin, Bax and Caspase-3 (P<0.05). Conclusion:APS combined with IR can inhibit the migration and invasion of CNE-1 cells, and increase the apoptosis induced by radiotherapy, which may be related to the inhibition of EMT and Akt/ERK pathway.

Knockout of glutathione peroxidase 5 down-regulates the piRNAs in the caput epididymidis of aged mice / 亚洲男科学杂志(英文版)

The mammalian epididymis not only plays a fundamental role in the maturation of spermatozoa, but also provides protection against various stressors. The foremost among these is the threat posed by oxidative stress, which arises from an imbalance in reactive oxygen species and can elicit damage to cellular lipids, proteins, and nucleic acids. In mice, the risk of oxidative damage to spermatozoa is mitigated through the expression and secretion of glutathione peroxidase 5 (GPX5) as a major luminal scavenger in the proximal caput epididymidal segment. Accordingly, the loss of GPX5-mediated protection leads to impaired DNA integrity in the spermatozoa of aged Gpx5

Effectiveness and Safety Evaluation of Qixiong Zhongzi Decoction () in Idiopathic Asthenozoospermia Treatment: A Randomized Controlled Trial / 中国结合医学杂志

OBJECTIVE@#To evaluate the clinical effectiveness and safety of the Chinese medicine (CM) Qixiong Zhongzi Decoction (, QZD) in the treatment of patients with idiopathic asthenozoospermia.@*METHODS@#A total number of 66 patients with idiopathic asthenozoospermia were included and randomly divided into treatment and control groups by SAS-generated code from January 2015 to August 2016, 33 patients in each group. Patients in the treatment group were administered with 150 mL of QZD twice a day, whereas those in the control group were given 1 g of levocarnitine oral liquid twice a day. The two groups received the indicated medication for 12 weeks and were then followed up for 4 weeks. The primary outcome was sperm motility, and the secondary therapeutic indices were sperm volume, density, pregnancy probability, and CM syndrome score. The comparison between groups was carried out at 4, 8 and 12 weeks, respectively. The safety was determined before and after treatment.@*RESULTS@#(1) Drop-off: 5 cases (7.58%) were lost after treatment (2 from the treatment group and 3 from the control group). (2) Primary outcomes: after 8- and 12-week treatment, the progressive sperms in the two groups were significantly higher than the baseline (all P0.05), however, the CM syndrome score of the treatment group significantly declined compared with baseline level at each time points (all P<0.05). (4) Safety: no obvious side reactions were found during the treatment in both groups.@*CONCLUSION@#QZD could improve the progressive and non-progressive grade sperm in the treatment of idiopathic asthenozoospermia. It is safe with no obvious side effects.

Ilizarov bone shortening-lengthening technique for tibial defects of bone and soft tissue without vascular injury / 中华创伤骨科杂志

Objective:To investigate the therapeutic efficacy of Ilizarov bone shortening-lengthening technique for tibial defects of bone and soft tissue without vascular injury.Methods:A retrospective analysis was made of the 28 patients who had been treated by Ilizarov bone shortening-lengthening technique at Department of Orthopaedics, Wuxi No.9 People's Hospital from January 2007 to October 2017 for tibial de-fects of bone and soft tissue without vascular injury.They were 20 males and 8 females, aged from 18 to 69 years (average, 36.4 years).By the Gustillo classification, 5 cases belonged to type Ⅱ, 6 to type ⅢA and 17 to type ⅢB.Infection was complicated in 17 cases.After debridement or epluchage, the area of skin defects ranged from 4 cm × 3 cm to 16 cm × 5 cm and the length of bone defects from 4.5 to 11.0 cm (average, 6.9 cm).The wound healing, bone healing, functionary recovery of lower extremity and complications were observed postoperatively.Bone healing and functional recovery of lower extremity were evaluated according to the grading of Association for the Study and Application of the Method of Ilizarov (ASAMI).The complications associated with Ilizarov technique were assessed according to the Paley criteria.Results:The follow-up for all the patients lasted from 12 to 45 months (average, 20.5 months).The healing time for wounds ranged from 13 to 35 days (average, 21.9 days), the healing time for lengthened bone from 6 to 12 months (average, 8.9 months), and the healing time for bone defects at the dock sites from 6 to 11 months (8.3 months).According to the ASAMI grading, the bone healing was excellent in 21 cases and good in 7, giving an excellent to good rate of 100%(28/28) while the functionary recovery of lower extremity was excellent in 10 cases, good in 15, fair in 2 and poor in one, giving an excellent to good rate of 89.3%(25/28).The incidence was 14.3%(4/28) for major complications after Ilizarov surgery, 57.1%(16/28) for minor complications, 60.7%(17/28) for overall complications, and 1.7 times for each case.Conclusion:In the treatment of tibial defects of bone and soft tissue without vascular injury, Ilizarov bone shortening-lengthening technique can deal with the difficulties in repair of soft tissue defects, characterized by simplified wound closure, fast and improved bone healing at the dock sites, reduced complications and satisfactory functionary recovery of lower extremity.

Downregulation of serum CXCL4L1 predicts progression and poor prognosis in prostate cancer patients treated by radical prostatectomy / 亚洲男科学杂志(英文版)

Our previous study found that plate factor-4 variant (CXCL4L1) was downregulated in the serum of patients with prostate cancer (PCa). The aim of the present study was to investigate the prognostic value of CXCL4L1 in PCa. In total, 213 PCa patients treated with radical prostatectomy were enrolled and peripheral blood samples of all patients were collected. Expression of serum CXCL4L1 in patients with different tumor stages and grades were measured by enzyme-linked immunosorbent assay (ELISA). The Kaplan-Meier method was applied to estimate the progression to castration-resistant prostate cancer (CRPC), metastasis, biochemical recurrence (BCR)-free survival, and overall survival (OS). Prognostic factors for BCR-free survival and OS were determined by univariate and multivariate analyses using the Cox proportional hazards regression model. The expression of CXCL4L1 was significantly lower in PCa patients with advanced pathological tumor stage, high-grade Gleason score, and metastasis. Moreover, downregulation of CXCL4L1 not only strongly correlated with aggressive clinicopathological features, but also predicted tumor progression and unfavorable outcomes. Finally, multivariate Cox regression analyses identified CXCL4L1 as an independent prognostic factor for both BCR-free survival (hazard ratio [HR]: 2.03, 95% confidence interval [CI]: 1.26-3.27; P = 0.004) and OS (HR: 2.26, 95% CI: 1.07-4.79; P = 0.033). In conclusion, our results indicate that CXCL4L1 might serve as a novel and promising prognostic biomarker for patients with PCa and potential therapeutic target in the future.

Transcriptome analysis of venom gland and identification of functional genes for snake venom protein in Agkistrodon acutus / 中国中药杂志

Agkistrodon acutus is a traditional Chinese herb medicine which has immunological regulation,anti-tumor,anti-inflammatory and analgesic effects,which is mainly used for the treatment of rheumatoid arthritis,ankylosing spondylitis,sjogren's syndrome and tumors. In order to excavate more important functional genes from A. acutus,the transcriptome of the venom gland was sequenced by the Illumina Hi Seq 4000,and 32 862 unigenes were assembled. Among them,26 589 unigenes were mapped to least one public database. 2 695 unigenes were annotated and assigned to 62 TF families,and 5 920 SSR loci were identified. The majority of mapped unigenes was from Protobothrops mucrosquamatus in the NR database,which revealed their closest homology. Three secretory phospholipase A_2 with different amino acid sequences showed similar spatial structures and all had well-conserved active sites. The 3 D structural models of C-type lectin showed conserved glycosylation binding sites( Asn45). This study will lay the foundation for the further study of the function of snake venom protein,and promoting the development and utilization of genome resources from A. acutus.

Comparison of autogenous tendon reconstruction with coracoclavicular ligament combined with hook plate and simple hook plate fixation in the treatment of acromioclavicular joint dislocation / 中国组织工程研究

BACKGROUND: Hook plate is usual and satisfactory for the treatment of acromioclavicular joint dislocation, but there are still many problems. The comparative analysis is seldom reported between reconstruction of coracoclavicular ligament by autogenous tendon combined with hook plate and simple hook plate. OBJECTIVE: To compare the clinical efficacy of reconstruction of coracoclavicular ligament combined with hook plate and simple hook plate fixation for acromioclavicular joint dislocation. METHODS: A total of 38 patients with acromioclavicular dislocation were randomly divided into two groups. The patients were treated with plantar tendon "V" reconstruction with coracoclavicular ligament combined with hook plate fixation (combination group) and with a simple hook plate fixation (simple hook plate group). We compared the operation time, blood loss, hospitalization days, average hospitalization costs, the time taken for internal fixation, the motion range of shoulder joint at postoperative 12 months, the Constant-Murley function score, the reduction of shoulder joint and the Visual Analogue Scale scores between the two groups. RESULTS AND CONCLUSION: (1) Patients in both groups were followed up for 12 months. In the combination group, the hook plate was removed at postoperative 3 months. In the simple hook plate group, the hook plate was removed at approximately postoperative 12 months. In follow-up, no dislocation appeared in both groups. (2) No significant difference in hospitalization days, motion range of shoulder joint, Constant-Murley function score, the reduction of shoulder joint and the Visual Analogue Scale scores was determined between the two groups (P > 0.05). (3) Operation time was longer; blood loss was more; and average hospitalization costs were higher in the combination group than in the simple hook plate group (P < 0.05). (4) These findings indicate that plantar tendon reconstruction of coracoclavicular ligament combined with hook plate meets biomechanical requirements in the treatment of acromioclavicular joint dislocation. The plate can be removed early using a fixator. The lower extremity has an incision, but the follow-up results are satisfactory. Simple hook plate fixation for acromioclavicular joint dislocation takes a long time, and can obtain average effect, but there is the risk of re-dislocation (this case does not experience re-dislocation). The appropriate treatment can be chosen according to the patient's condition, needs, and economic conditions.

Effect of percutaneous nailing combined with unilateral fenestration and decompression for bilateral lumbar spinal stenosis / 实用医学杂志

Objective Clinical study on the treatment of bilateral lumbar spinal stenosis with percutane-ous fixation combined with unilateral open-ended spinal canal decompression. Methods 126 patients with bilater-al lumbar spinal stenosis admitted to our hospital were randomly divided into two groups.The observation group was treated by percutaneous nail combined with unilateral laminar fenestration,and the control group was treated by open reduction combined with bilateral hemi laminectomy and spinal canal decompression.The two groups of pa-tients with general surgical complications after treatment,index,lumbago and leg pain VAS score and ODI score were compared.Results The operation time of the observation group,the amount of bleeding,the time of hospital-ization and the cost of hospitalization were less than those of the control group.There were no complications such as incision infection after operation in the two groups.The two groups were statistically significant postoperative pain and leg pain VAS score and ODI score compared with preoperative difference.The two groups had statistical signifi-cance between low back and leg pain VAS score and ODI score after 6 and 12 months and last follow-up phase dif-ference.But the two groups after 3 months of lumbago and leg pain VAS score and ODI score had no significant dif-ference.Conclusions Percutaneous minimally invasive nail combined with unilateral laminar fenestration and de-compression for bilateral lumbar spinal stenosis has the advantages of less trauma,less bleeding,shorter hospitaliza-tion time and quicker recovery.It is worthy of clinical promotion.

Observation on the long - term effectiveness and safety of juvenile myopia patients wearing orthokeratology / 国际眼科杂志(Guoji Yanke Zazhi)

coefficient of variation, corneal endothelium hexagonal cell ratio, anterior corneal surface curvature ratio of horizontal(HK) and vertical curvature(VK) were not statistically significant before and after wearing for 6mo, 1, and 2a (P > 0. 05). The uncorrected visual acuity increased significantly, and the diopter decreased significantly after their wearing (P<0.05). There was no significant difference in axial length after wearing OK lens for 6mo,1,and 2a (P>0.05). CONCLUSION: The orthokeratology lenses can significantly increase uncorrected visual acuity and improve refractive power for juvenile myopia without severe corneal or conjunctival complications occurred, which has little influence on corneal endothelial cells and corneal thickness with a certain degree of safety.

DNA methyltransferase 3A regulates the expressions of collagens during the activation of cardiac fibroblasts / 医学研究生学报

Objective The mechanisms of methylation acting on myocardial fibrosis are not yet clear at present. The aim of this study was to investigate the role of DNA methyltransferase 3A (DNMT3A) in regulating the expressions of collagens during the activation of cardiac fibroblasts.Methods Cardiac fibroblasts were obtained from 50 neonatal mice and divided into three groups: blank control, DNMT3A overexpression plasmid (mDNMT3A-pEGFP-C3) and small interference DNMT3A siRNA. The contents of collagens in the cell supernatant were detected by ELISA. The mRNA and protein expressions of type I collagen (Col Ⅰ), type Ⅲ collagen (Col Ⅲ) and DNMT3A in the cardiac fibroblasts were determined by real-time quantitative PCR and Western blot respectively and the proliferative activity of the cardiac fibroblasts measured by CCK8 assay.Results The contents of Col I and Col Ⅲ in the cell supernatant were significantly increased in the DNMT3A overexpression plasmid group but decreased in the DNMT3A siRNA group as compared with those in the blank control (P<0.05). The expressions of Col Ⅰ, Col Ⅲ and DNMT3A were remarkably higher in the DNMT3A overexpression plasmid group but lower in the DNMT3A siRNA group than in the blank control (P<0.05). The cell activity was markedly higher in the DNMT3A overexpression plasmid group than in the empty vector plasmid and control groups (2.087±0.317 vs 1.063±0.223 and 1.082±0.207, P<0.05) but lower in the DNMT3A siRNA group (0.463±0.087) than in the latter two (P<0.05).Conclusion DNMT3A can increase the proliferation and activation of cardiac fibroblasts, upregulate the expressions of collagens and thus promote myocardial fibrosis.