Inhibition of Toll-Like Receptor 4 Signaling Pathway Accelerates the Repair of Avascular Necrosis of Femoral Epiphysis through Regulating Macrophage Polarization in Perthes Disease

BACKGROUND@#Legg-Calvé-Perthes disease (LCPD) is still a refractory disease in children’s orthopedics. With the introduction of the concept of ‘‘osteoimmunology’’, the immune-inflammatory mechanisms between bone and immune system have become a research focus of LCPD. However, few studies have reported on the pathological role of inflammation-related receptors such as toll-like receptors (TLRs) as well as immune cells such as macrophages in LCPD. This study was for investigating the mechanism of TLR4 signaling pathway on the direction of macrophage polarization and the repair of avascular necrosis of femoral epiphysis in LCPD. @*METHODS@#With GSE57614 and GSE74089, differentially expressed genes were screened. Through enrichment analysis and protein–protein interaction network, the functions of TLR4 were explored. Furthermore, immunohistochemistry, enzyme-linked immunosorbent assay (ELISA), hematoxylin & eosin (H&E) staining, micro-CT, tartrate-resistant acid phosphatase (TRAP) dyeing and western blotting were performed for determining the influences of TAK-242 (a TLR4 inhibitor) on the repair of avascular necrosis of femoral epiphysis in rat models. @*RESULTS@#Totally 40 co-expression genes were screened as well as enriched in TLR4 signaling pathway. Immunohistochemistry and ELISA analyses certified that TLR4 facilitated macrophage polarization toward the M1 phenotype and prevented macrophage polarization toward the M2 phenotype. Besides, the results of H&E and TRAP staining, micro-CT, and western blotting showed that TAK-242 can inhibit osteoclastogenesis and promote osteogenesis. @*CONCLUSION@#Inhibition of TLR4 signaling pathway accelerated the repair of avascular necrosis of femoral epiphysis by regulating macrophage polarization in LCPD.

Relationship between ALDH2 rs671 gene polymorphism and body fat content in Han population / 中华健康管理学杂志

Objective:To investigate the relationship between ALDH2 rs671 gene polymorphism and body fat content in Chinese Han population.Methods:It was a cross-sectional study. A total of 3 943 Chinese Han people were selected for physical examination in the Department of Health Medicine in the Second Medical Center of Chinese PLA General Hospital from January 2017 to January 2020, including 2 749 males and 1 194 females; the average age was (48.12±7.98) years. The research subjects were divided into obesity group and non-obesity group according to their body fat rate. The basic information including age, gender, disease history, height, weight, body fat content and blood samples were collected; the ALDH2 rs671 gene polymorphism was detected. Genotype and allele frequencies were compared between groups by using χ2 test. The comparison of clinical data between different genotypes was conducted by using one-way analysis of variance. The correlation between various indicators, lifestyle and genotype was analyzed by using a logistic regression model. Results:The distribution of ALDH2 rs671 genotype was wild genotype GG (68.6%), heterozygous mutant genotype GL (28.7%) and homozygous mutant genotype LL (2.7%). In terms of baseline characteristics, there were significant differences in male (67.5% vs 71.3%), body mass index (BMI, (23.12±2.64) kg/m 2 vs (27.10±2.75) kg/m 2), genotype distribution (GG 65.6% vs 70.6%), drinking history (64.4% vs 68.8%), history of hypertension (18.7% vs 36.9%), coronary heart disease (3.7% vs 5.6%) and diabetes (9.7% vs 15.0%) between the obesity and non-obesity group (all P<0.05). Multifactor logistic regression showed that ALDH2-GG genotype ( OR=1.386, 95% CI: 1.078-1.782), age ( OR=1.051, 95% CI: 1.035-1.068), and BMI ( OR=2.182, 95% CI: 2.043-2.331) were risk factors for obesity differentiated by body fat percentage, and male ( OR=0.175, 95% CI: 0.123-0.250) was protective factor (all, P<0.05). Conclusion:ALDH2 rs671 polymorphism is related to body fat content. The risk of excessive body fat content in individuals with GG genotype is significantly increased.

Correlation between serum non-high density lipoprotein cholesterol and bone mass levels in different body parts in physical examination population / 中华健康管理学杂志

Objective:To compare the relationship between non-high-density lipoprotein cholesterol (non-HDL-C) and bone mass in different body parts in the physical examination population.Methods:It was a cross-sectional study. The data of 595 physical examiners who visited the Institute of Health Management, PLA General Hospital from June to September 2016 were retrospectively analyzed. The bone mass levels of lumbar 1-4 vertebral body (spine) and femur, average bone density were measured by double light energy X-ray bone density instrument. The basic information and biochemical indices of the physical examiners were collected. The difference between blood lipid components (including Non-HDL-C) and bone mass level of each body part were analyzed.Results:According to blood lipid stratification, there were significant differences in spine T value (T-spine) between triglyceride (TG) groups (-0.15±1.41 vs -0.38±1.3), Non-HDL-C groups (-1.01±0.74 vs -1.21±0.59, -1.04±0.73 vs -1.30±0.45,-1.07±0.71 vs -1.30±0.26) and low-density lipoprotein cholesterol (LDL-C) groups (-1.01±0.71 vs -1.32±0.56)(all P<0.05). There was no statistically significant difference in other lipid groups and femoral T values in each component′s blood lipids. The T-spine decreased significantly in the LDL-C≥3.4 mmol/L group, and the differences were all significant among the Non-HDL-C group (all P<0.05). In binary logistic regression analysis, LDL-C≥3.4 mmol/L ( OR=3.961,95% CI:1.310-11.974) and Non-HDL-C>4.1 mmol/L ( OR=3.600,95% CI:1.035-12.524) were risk factors for vertebral bone mass loss (both P<0.05). Conclusion:People with elevated serum TG, Non-HDL-C and LDL-C in the physical examination population are prone to bone abnormalities. Non-HDL-C≥4.1 mmol/L and LDL-C≥3.4 mmol/L are more closely related to the vertebral bone mass loss and are the risk factors for vertebral bone mass loss.

Efficacy of postoperative radiotherapy and prognosis in patients with completely resected stage Ⅲ(pN 2) lung adenocarcinoma with EGFR wild-type receiving adjuvant chemotherapy / 中华放射肿瘤学杂志

Objective:To evaluate the value and identify the prognosic factors of postoperative radiotherapy (PORT) in completely resected stage Ⅲ(pN 2) lung adenocarcinoma patients with epidermal growth factor receptor (EGFR) wild-type who received adjuvant chemotherapy. Methods:Clinical data of 172 patients with stage Ⅲ(pN 2) EGFR wild-type lung adenocarcinoma who underwent radical resection and adjuvant chemotherapy from 2009 to 2016 were retrospectively analyzed. All patients received platinum-based adjuvant chemotherapy combining two drugs for>4 cycles, and divided into the PORT group and the non-PORT group. The survival rate was calculated by Kaplan- Meier method and log-rank test, and multivariate prognostic analysis was performed by Cox’s regression model. Results:Among 172 patients, the median overall survival (OS), 3-year and 5-year OS rates were 40 months, 55.9% and 28.3%, respectively. The median disease-free survival (DFS), 3-year and 5-year DFS rates were 17 months, 24.5% and 13.0%, respectively. DFS was significantly improved in the PORT group (29 months vs. 13 months, P=0.001), whereas OS did not significantly differ between two groups (51 months vs. 38 months, P=0.151). In subgroup analysis, DFS of patients with multistation N 2 or the number of N 2 metastases of≥3 or skip N 2 in the PORT group was significantly longer ( P<0.05), whereas PORT exerted no significant effect on OS ( P>0.05). Conclusions:For patients with completely resected stage Ⅲ(N 2) EGFR wild-type lung adenocarcinoma receiving adjuvant chemotherapy, PORT might increase DFS and have a trend toward longer OS. However, these findings remain to be validated by large sample size investigations.

Effect of previous radiotherapy on the efficacy and pulmonary toxicity of PD-1 inhibitor in second-line or above treatment in patients with stage Ⅳ non-small cell lung cancer / 中华放射肿瘤学杂志

Objective:To investigate whether radiotherapy should be delivered before the application of immune checkpoint inhibitor PD-1 in patients with advanced non-small cell lung cancer (NSCLC) and evaluate the effect of previous radiotherapy on the efficacy and pulmonary toxicity of PD-1 inhibitor.Methods:Clinical data of patients with stage Ⅳ NSCLC who received immunotherapy in Henan Cancer Hospital from March 2015 to September 2019 were retrospectively analyzed. The baseline data of patients, the status of radiotherapy and immunotherapy and the pulmonary toxicity were collected. According to whether radiotherapy was given before PD-1 inhibitor application, all patients were divided into the previous radiotherapy and non-radiotherapy groups. Survival analysis was performed by Kaplan- Meier method. Results:A total of 90 patients were enrolled including 39 cases in the previous radiotherapy group and 51 cases in the non-radiotherapy group. The median follow-up time was 22.9 months. The median progression-free survival (mPFS) in the previous radiotherapy group was 7.5 months (95% CI 5.4-9.5 months), significantly longer compared with 4.1 months (95% CI 3.1-5.1 months) in the non-radiotherapy group ( P=0.003). The median overall survival (mOS) significantly differed between two groups[15.2 months (95% CI 12.3-18.1 months) vs. 9.3 months (95% CI 6.1-12.5 months)]( P=0.040). The incidence of pulmonary toxicity showed no significant difference between two groups ( P=0.154). Conclusions:Patients with stage Ⅳ NSCLC patients in the previous radiotherapy group obtain significantly better mPFS and mOS and similar pulmonary toxicity compared with their counterparts in the non-radiotherapy group. Nevertheless, the findings remain to be validated by subsequent investigations with larger sample size.

Serum endothelial cell specific molecules-1 level and its clinical significance in hypertensive disorders complicating pregnancy / 中国医师进修杂志

Objective:To investigate the serum endothelial cell specific molecule-1 (ESM-1) level and its clinical significance in patients with hypertensive disorders complicating pregnancy (HDCP).Methods:Three hundred pregnant women with HDCP (HDCP group) and 300 pregnant women undergoing health check-ups (healthy control group) from January to December 2019 in Maternity and Child Health Hospital of Wenling City of Zhejiang Province were selected. In HDCP group, hypertension during pregnancy was in 94 cases, mild preeclampsia was in 131 cases, and severe preeclampsia was in 75 cases. The serum ESM-1, serum uric acid and 24-hour urine protein levels were detected. The incidences of neonatal asphyxia, fetal distress, cesarean section, polyhydramnios, premature rupture of membranes and postpartum hemorrhage in the HDCP group were recorded.Results:The serum ESM-1, serum uric acid and 24-hour urine protein in HDCP group were significantly higher than those in healthy control group: (0.42 ± 0.05) μg/L vs. (0.33 ± 0.04) μg/L, (262.34 ± 23.18) mmol/L vs. (212.37 ± 22.16) mmol/L and (0.36 ± 0.07) g vs. (0.11 ± 0.03) g, and the differences were statistical significant ( P<0.01). The correlation analysis results showed that the serum ESM-1 was positive correlation with serum uric acid and 24-hour urine protein in HDCP pregnant women ( r = 0.497 and 0.512, P<0.01). The serum ESM-1 in pregnant women with mild preeclampsia and severe preeclampsia were significantly higher than that in pregnant women with hypertension during pregnancy: (0.44 ± 0.05) and (0.51 ± 0.06) μg/L vs. (0.38 ± 0.04) μg/L, the serum ESM-1 in pregnant women with severe preeclampsia was significantly higher than that in pregnant women with mild preeclampsia, and the differences were statistical significant ( P<0.05). With the median serum ESM-1 (0.41 μg/L) as the boundary, pregnant women with HDCP were divided into high ESM-1 group (154 cases) and low ESM-1 group (146 cases). The incidences of neonatal asphyxia, fetal distress, cesarean section, polyhydramnios, premature rupture of membranes and postpartum hemorrhage in high ESM-1 group were significantly higher than those in low ESM-1 group: 14.94% (23/154) vs. 6.16% (9/146), 26.62% (41/154) vs. 9.59% (14/146), 46.10% (71/154) vs. 29.45% (43/146), 25.32% (39/154) vs. 3.42% (5/146), 23.38% (36/154) vs. 4.11% (6/146) and 20.13% (31/154) vs. 7.53% (11/146), and the differences were statistical significant ( P<0.01). Conclusions:Serum ESM-1 level is elevated in pregnant women with HDCP . Serum ESM-1 level is closely related to the severity of HDCP and pregnancy outcomes.

Study on the relationship between wholeGorgan MRI score (WORMS)and pain in patients with knee osteoarthritis / 实用放射学杂志

Objective To investigate the correlation between wholeGorgan MRI score (WORMS)and pain in patients with knee osteoarthritis (OA).Methods 1 1 9 patients with knee OA were enrolled,and The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC)was used to estimate the pain.Knees of all the subj ects underwent scanning with sagittal,coronal,transverse TSEG T2 WIGFS and sagittal 3DGFLASHGWE sequences at 3.0T MR.The pathological changes of knee cartilage lesions,subarticular bone marrow edema (BME),bone cysts,bone attrition,osteophytes,meniscal inj ury,ligament inj ury,synovial thickening and joint effusion were evaluated according to the WORMS.The correlations between the above pathological changes and the pain were analyzed.Results There were significant and positive correlations between articular cartilage lesions and osteophytes,articular cartilage lesions and BME,BME and cyst,bone attrition and osteophytes,and BME and osteophytes,with the correlation coefficients of 0.6 70,0.5 9 8,0.5 1 8,0.5 1 4 and 0.505 ,respectively (P＜0.05 ).Multiple regression analysis showed that BME,bone attrition,synovial thickening and joint effusion were the main factors affecting the severity of pain after adj usted for age and BMI (P＜0.05).Conclusion The source of OA pain is multifactorial.The severity of BME,bone attrition,synovial thickening and joint effusion are the main factors associated with joint pain.As a nonGinvasive examination method,MR can make a comprehensive evaluation of the pathological changes of knee OA.

Effect of TGF-β1 and IL-10 on the Immunoregulatory Function of Extracellular Vesicles Derived from Mesenchymal Stem Cells / 中国实验血液学杂志

OBJECTIVE@#To investigate the effect of immune regulatory molecules TGF-β1 and IL-10 on the immunoregulatory activities of extracellular vesicles(EV) secreted from mesenchymal stem cells (MSCs).@*METHODS@#MSC were isolated from human umbilical cord and expanded, then were treated with TGF-β1 and IL-10 for 72h, and MSC-EVs in supernatants were isolated. The total protein content of all samples was determined by BCA methed. The morphological structure was observed by transmission electron microscopy. The surface markers of MSC-EV were analyzed by flow cytometry. The apoptosis of peripheral blood mononuclear cells(PBMNC) stimulated by ConA and the proportion of CD4CD25/CD127 (Treg) cells were detected by flow cytometry after incubation with MSC-EV for 72 h. The CBA and ELISA kit were used to detect the contents of IL2, IL4, IL6, IL10, IFN-γ, TNF-α, Th17A and TGF-β1 in PBMC supernatants and MSC-EV.@*RESULTS@#All the samples showed that the typical cup-shaped membrane-like structure was observed by transmission electron microscopy, and CD9, CD44, CD63 and CD81 expressed. After TGF-β1 treatment, the MSC-EV displayed the strongest ability to promote PBMNC apoptosis（P<0.01）, and in all the samples the proportion of Treg cells increased. MSC-EV could increase the content of IL-10 in the supernatants of PBMNC culture, the content of TGF-β1 in PBMNC supernatants after MSC treatment with TGF-β1 was lower than that in untreated group(P<0.05). The content of IL-6 in MSC-EV increased significantly after treatment with TGF-β1, and the content of TGF-β1 decreased.@*CONCLUSION@#TGF-β1 alters the immnomodulatory function of MSC-EV and its underlying mechanisms need to be clarified in further investigations.

Effect of temperature for tumescence anesthesia solution on intraoperative and postoperative pain of endovenous laser ablation of lower extremity varicose vein / 中南大学学报(医学版)

To compare the effect of cold or room temperature of tumescence anesthesia solution on pain perception during and after endovenous laser ablation (EVLA) for varicose veins of lower limb.
 Methods: A total of 51 patients with lower extremity varicose vein were treated by EVLA with tumescence anesthesia solution. All patients were used for local anesthesia and randomly divided into 2 groups according to the temperature of tumescence anesthesia solution: Group A (n=26) with room temperature (24 ℃) of tumescence anesthesia solution and Group B (n=25) with cold (4 ℃) tumescence anesthesia solution. Number rating scale (NRS) was recorded immediately after the procedure and postoperative 1, 2, 3 day. Patients were asked to register pain scores during the week.
 Results: The mean linear endovenous energy density (LEED) in the 2 groups was not significantly different (P>0.05). The ratio of patients without pain during the operation in the Group A was lower than that in the Group B (30.8% vs 64%, P<0.05). On the day of operation and postoperative day 1, 2, 3, the average number rating scale (NRS) scores in the Group A were greater than those in the Group B (P<0.05). Postoperative day 1, only 30.8% of the patients in the Group A resumed daily activities, which was lower than that (68% of the patients) in the Group B.
 Conclusion: In the process of EVLA for varicose veins of lower limb, there is less pain during operation and post-operation using cold tumescence anesthesia solution comparing room temperature tumescence anesthesia solution.

Comparative study of different intestinal loop labeling methods under the aid of single balloon enteroscopy for ERCP / 中国内镜杂志

Objective To compare the effect of different intestinal loop labeling methods under single balloon enteroscopy for ERCP. Method From June 2015 to May 2017, 36 cases of single balloon enteroscopy assisted ERCP patients, according to the study period divided into A, B, C three groups, In group A, the afferent loops were confirmed by titanium clips, labeled intestinal loops, and the B group was identified by methylene blue labeling and intestinal loops, and the C group was the control group, the operation time of the 3 groups was recorded (the starting time of operation, the time of reaching the nipple of the input loop or the time of the Roux-en-Y biliary anastomosis), the incidence of complications and the success rate of operation. Results The operation time was 42.17 min in group A and 59.83 min in group C, and there was significant difference between the two groups (P < 0.01),There was no statistically significant difference between group A and group B, group B and group C (P > 0.05), the complication rate and the operation success rate were not statistically different between the three groups (P > 0.05). Conclusion The operation time of the input loop at the time of ERCP assisted by single balloon enteroscopy has a clear advantage over the examination of the intestinal loop with a titanium clip.

Associations between Body Composition Indices and Metabolic Disorders in Chinese Adults: A Cross-Sectional Observational Study / 中华医学杂志(英文版)

<p><b>Background</b>Obesity induces dyslipidemia, hypertension, glucose intolerance, and inflammatory state, which results in atherogenic processes, diabetes, and cardiovascular disease. We usually use body composition indices, such as body mass index (BMI), body fat percentage (BFP), waist circumference-height ratio (WHtR), and waist-hip ratio (WHR) to reflect the obesity. The aim of this large population-based cross-sectional study was to investigate the associations between body composition indices and metabolic parameters in Chinese adults.</p><p><b>Methods</b>A total of 12,018 Chinese adults were included. Body composition indices, such as BMI, BFP, WHtR, and WHR, and metabolic parameters, such as systolic blood pressure (SBP), diastolic blood pressure (DBP), total cholesterol (TC), triglyceride (TG), low-density lipoprotein-cholesterol (LDL-C), high-density lipoprotein-cholesterol (HDL-C), fasting blood glucose (FBG), 2 h postprandial blood glucose (2h PBG), glycosylated hemoglobin (HbA1c), fasting insulin (FINS), insulin resistance index (HOMA-IR), high-sensitivity C-reactive protein (hs-CRP), and white blood cell count (WBC), were measured and analyzed. All analyses were stratified by gender.</p><p><b>Results</b>All body composition indices and metabolic parameters except 2h PBG differed significantly between males and females (all P < 0.001). BMI was positively associated with SBP, DBP, LDL-C, TC, TG, FBG, 2h PBG, HbA1c, FINS, HOMA-IR, hs-CRP, and WBC, and inversely associated with HDL-C; similar relationships were identified between the metabolic parameters and BFP, WHtR, and WHR. In the multivariate analysis, the odds of impaired glucose regulation, dyslipidemia, insulin resistance, and increased hs-CRP were 1.36, 1.92, 3.44, and 1.27 times greater in the overweight group than those in the normal weight group, respectively, and 1.66, 3.26, 7.53, and 1.70 times greater in the obese group than those in the normal weight group, respectively. The odds of dyslipidemia and hs-CRP were 1.29 and 1.38 times greater in the BFP ≥28.0% group than in the BFP <28.0% group, respectively. The odds of dyslipidemia, HOMA-IR, and hs-CRP were 1.55, 1.26, and 1.48 times greater in the WHtR ≥0.96 group than in the WHtR <0.96 group, respectively. Among males, the odds of HOMA-IR were 1.46 times greater in the WHR ≥0.54 group than in the WHR <0.54 group. Similar results were observed in females.</p><p><b>Conclusions</b>This study identified positive associations between all evaluated body composition indices and metabolic parameters in Chinese adults. Among the body composition indices, BMI predicted four of the five evaluated metabolic disorders in both gender groups.</p>

Relationship between Iron Metabolism and Platelet Parameters in Patients with Iron Deficiency Anemia / 中国实验血液学杂志

OBJECTIVE@#To investigate the relationship between iron metabolism and thrombocytosis.@*METHODS@#iron metabolism indexes , erythrocyte and platelet parameters of iron deficiency anemia patients with thrombocytosis were collected, the correlation of platelet parameters with iron metabolism indexes and erythrocyte parameters was analysed; the difference in erythrocyte，platelet and iron parameters between severe anemia group (hemoglobin<60 g / L) and mild and moderate anemia group (hemoglobin≥60 g / L) were compared; the changes of platelet count before and after treatment were observed.@*RESULTS@#There was a significant negative correlation between serum iron and platelet count (r=-0.404,P<0.01).Serum iron negatively correlated with platelet crit(r=-0.288,P<0.05). Transferrin saturation negatively correlated with platelet count and platelet crit(r=-0.353,P<0.01;r=-0.271, P<0.05).Serum ferritin and total iron binding capacity revealed no significant relation with any platelet parameters.Hemoglobin level , hematocrit and mean corpuscular hemoglobin concentration negatively correlated with platelet count(r=-0.239,P<0.05;r=-0.250,P<0.05;r=-0.339,P<0.01).There were differences in iron metabolism indexes and platelet parameters between mild to moderate anemia group and severe anemia group. After treatment, the platelet count decreased or was normal.@*CONCLUSION@#The important iron metabolism indexes affecting platelet count are serum iron and transferrin saturation,that is,the severer iron deficiency, the higher platelet count.Patients with more severe and hypochronic anemia has higher platelet count.

Establishment of liver IL-6 reporter mouse model by hydrodynamic gene transfection / 军事医学

Objective To construct a mouse model for real-time,noninvasive and specific monitoring of inflammation activation in hepatic tissues.Methods An inflammation reporter gene was targeted to the liver by hydrodynamic gene delivery technology.Bioluminescence imaging was used to detect the firefly luciferase(Fluc) expression in the mouse liver after inflammatory stimulation.Besides,the relevance between the light intensity and inflammation level was also intensively investigated.Results pIL-6-Fluc was successfully delivered to the liver.The hydrodynamic gene delivery could cause a transient liver injury that could return normal in 5 to 7 days.The expression of pIL-6-Fluc could be induced by lipopolysaccharides(LPS) treatment with an about (46.80±13.35) fold increase at the peak value,which was significantly higher than that detected by ELISA [(4.09±0.96)fold].Conclusion An inflammation reporter mouse model is constructed in this study by hydrodynamic gene transfection,allowing noninvasive monitoring of inflammation activation specifically in hepatic tissues.The reporter model is capable of monitoring inflammation activation with a sensitivity higher than that of ELISA.

Effects of extreme environmental conditions on sensitivity and specificity of collodial gold immunochromatography products / 军事医学

Objective To assess the limit of detection(LOD),sensitivity and specificity of collodial gold immunochrom-atography(GICA)products purchased from two manufacturers under special environmental conditions.Methods The sensitivity and specificity of GICA made in InTec Products, INC.and Beijing WANTAI Biological Pharmacy Enterprise Co., LTD.for detecting HBsAg, anti-HCV and anti-Treponema pallidum(TP)serum samples were evaluated under different conditions(conventional facilities,simulated hot and humid environments and simulated low pressure and hypoxia environments)according to the protocol of kits.LOD was estimated by detecting the standard materials obtained from the National Center for Clinical Laboratory(NCCL)of China.Results LOD for syphilis improved from 2 NCU to 1 NCU using GICA from InTec Products in hot and humid environments.The extreme conditions did not influence the specificity of GICA from the two manufacturers in the course of detection of clinical samples,but the sensitivity of detection was affected.For InTec Products,the sensitivity of hepatitis B virus and syphilis detection was improved in hot and humid environments,but was reduced in low pressure and hypoxia environments.In addition,the sensitivity of hepatitis C virus detection by InTec Products decreased in hot and humid environments.As for WANTAI products,the sensitivity of hepatitis B virus detection was reduced under extreme conditions and that of hepatitis C virus was only influenced by hot and humid environments. Interestingly, extreme conditions had no impact on the sensitivity of syphilis.Conclusion LOD of InTec Products is better than that of the WANTAI products for detection of standard materials from blood-borne diseases.In the process of detecting clinical samples,the sensitivity of the two manufacturers′GICA is influenced by extreme conditions, with the specificity unchanged.Overall, WANTAI products are more stable than those of InTec, and are also less influenced by extreme conditions.

Anti-platelet/anti-coagulation and their prognosis in advanced aged patients with ACS complicated atri-al fibrillation after PCI / 心血管康复医学杂志

Objective:To explore anti-platelet/anti-coagulation treatment and their influence on prognosis in advanced aged patients with acute coronary syndrome (ACS)complicated atrial fibrillation (AF)after percutaneous coronary intervention (PCI).Methods:A total of 204 advanced aged ACS + AF patients treated in our heart center were se-lected.All patients received CHA2 DS2 Vasc score assessment,male had score ≥2 scores and female had score ≥3 scores.A total of 160 cases received dual anti-platelet therapy combined anticoagulant treatment of warfarin,and they were randomly divided into low intensity group [n=80,international normalized ratio (INR)remained 1.8~2.3]and high intensity group (n=80,INR remained 2.3~2.8),both groups were followed up for 18 months.Inci-dence rates of major adverse cardiovascular and cerebrovascular events (MACCE),ischemic and hemorrhage events were observed.Results:Both groups were followed up for a mean 18 months,and there were no significant differ-ence in all-cause mortality,incidence rates of MACCE and fatal hemorrhage between two groups,P > 0.05 all.Compared with low intensity group,there were significant rise in incidence rates of severe hemorrhage (3.8% vs. 12.5%),P <0.05.Conclusion:Low intensity warfarin anticoagulant therapy can effectively reduce incidence rates of MACCE and ischemic events,and incidence rate of hemorrhage events is low in advanced aged ACS + AF pa-tients after PCI.

Anti-platelet/anti-coagulation and their prognosis in advanced aged patients with ACS complicated atri-al fibrillation after PCI / 心血管康复医学杂志

Objective:To explore anti-platelet/anti-coagulation treatment and their influence on prognosis in advanced aged patients with acute coronary syndrome (ACS)complicated atrial fibrillation (AF)after percutaneous coronary intervention (PCI).Methods:A total of 204 advanced aged ACS + AF patients treated in our heart center were se-lected.All patients received CHA2 DS2 Vasc score assessment,male had score ≥2 scores and female had score ≥3 scores.A total of 160 cases received dual anti-platelet therapy combined anticoagulant treatment of warfarin,and they were randomly divided into low intensity group [n=80,international normalized ratio (INR)remained 1.8~2.3]and high intensity group (n=80,INR remained 2.3~2.8),both groups were followed up for 18 months.Inci-dence rates of major adverse cardiovascular and cerebrovascular events (MACCE),ischemic and hemorrhage events were observed.Results:Both groups were followed up for a mean 18 months,and there were no significant differ-ence in all-cause mortality,incidence rates of MACCE and fatal hemorrhage between two groups,P > 0.05 all.Compared with low intensity group,there were significant rise in incidence rates of severe hemorrhage (3.8% vs. 12.5%),P <0.05.Conclusion:Low intensity warfarin anticoagulant therapy can effectively reduce incidence rates of MACCE and ischemic events,and incidence rate of hemorrhage events is low in advanced aged ACS + AF pa-tients after PCI.

Effect of Thrombocytopenia on Migration and Homing Pattern of Dendritic Cells / 中国实验血液学杂志

<p><b>OBJECTIVE</b>To investigate the effect of thrombocytopenia on the migration patterns of adoptive dendritic cell(DC) in vivo.</p><p><b>METHODS</b>The mouse model of thrombocytopenia was established by intraperitoneal administration of anti-CD41 mAb MWReg30. Mouse bone marrow(BM)-derived DC were injected into thrombocytopenia mouse by footpad infusion and intravenous infusion. The DC migration and distribution pattern were detected by bioluminescence imaging.</p><p><b>RESULTS</b>More than 80% platelets were cleared in the experimental group which was infused with anti-CD41 antibody. At 72 h after injection, the percentage of injected DC that migrated from footpad to popliteal lymph nodes(PLNs) and inguinal lymph nodes(ILNs) were (0.32±0.02)% and (0.02±0.01)% in experimental group, and (0.27±0.15)% and (0.02±0.02)% in control group, respectively. Statistic data showed that there was no statistical difference between these 2 groups (P>0.05). The issue distribution pattern of intravenously injected DC between experimental group and control group were not distinctly different, and large amounts of injected DC accumulated in the spleen, liver draining lymph-nodes lungs and liver.</p><p><b>CONCLUSION</b>Thrombocytopenia has not a distinct effect on the migratory capacity and tissue distribution of DC by either footpad or intravenous injection.</p>

Correlation between quality of life and mineral metabolism in maintenance hemodialysis patients / 中华肾脏病杂志

Objective With multi?center investigation, to assess the life quality of patients with maintained hemodialysis (MHD) in Liaoning Province and to explore the relationship among the mineral metabolism, the life quality of the patients with MHD, and the repeated hospitalization within the latest three years. Methods 1192 patients with hemodialysis (at least 3 months) from January to March in 2015 at ten blood purification centers in Liaoning Province were selected for the cross?————————sectional survey. The Kidney Health?related Quality of Life (HRQOL) version 1.3 was used to evaluate the MHD patients' life quality. The total length of hospitalization was divided into four groups: 0 days, 3 to 15 days, 16 to 30 days and above 30 days. Results When serum calcium value ranged from 2.1 to 2.5 mmol/L, kidney?disease component summary (KDCS), mental component summary (MCS), physical component summary (PCS) and SF?36+KDCS corresponded to a higher value (P<0.05). When serum phosphorus value ranged from 1.13 to 1.78 mmol/L, KDCS and SF?36+KDCS corresponded to a higher value (P<0.05). When the calcium phosphorus product value ranged from 40.68 to 49.94, MCS corresponded to a higher value (P<0.05). KDCS showed a linear correlation with age (P<0.001), dialysis age, serum calcium (less than or equal to 2.5 mmol/L) (P<0.05); PCS showed a linear correlation with age (P<0.001) and dialysis age (P<0.05); SF?36+KDCS showed a linear correlation with age (P<0.001), and serum calcium (less than or equal to 2.5 mmol/L) (P<0.05), while age and dialysis age were negatively correlated. The hospitalization days showed a linear correlation with age, dialysis age (P<0.001) and serum phosphorus, calcium phosphorus product value (P<0.05), while dialysis age and calcium phosphorus product value were negatively correlated. Among different groups of total hospitalization days in three years, age, hemodialysis age, serum calcium, serum phosphorus, calcium?phosphorus product value and quality of life values were all statistically significant (P<0.05). Conclusions The life quality of patients with MHD were correlated with serum calcium, phosphorus, calcium and phosphorus product value, iPTH, dialysis age and age, while age and dialysis age were of negative correlation. The total number of hospitalization days in 3 years was closely linearly correlated with age and dialysis age, significantly correlated with serum phosphorus, calcium and phosphorus product value, while dialysis age, calcium and phosphorus product value were in a negative correlation. The total number of hospitalization in 3 years was correlated with the patients' age, dialysis age, serum calcium, serum phosphorus, calcium and phosphorus product value and quality of life.

Assessment of abstracts on randomized controlled trials in non-small cell lung cancer published in Chinese / 中华医学图书情报杂志

Objective To assess the abstracts on randomized controlled trials ( RCT) in non-small cell lung cancer ( NSCLC) published in Chinese and their influencing factors.Methods RCT in NSCLC published in Chinese were included according to the CONSORT statement and their influencing factors were analyzed by RevMan 5.3 soft-ware.Results The titles were identified as random, randomization, blinding, statistical method, recruited partici-pants, trial registry and fund-supported, respectively, in 20%of the 2677 abstracts included in this study.Con-clusion The titles are identified as random, randomization, blinding, statistical method, recruited participants, trial registry and fund-supported in RCT published in Chinese.Although the abstracts are improved after the publication of CONSORT, they need to be further brushed up.

Effect of lightweight polypropylene meshversus standard polypropylene mesh on tension-freerepair ofinguinal hernia / 中国组织工程研究

BACKGROUND:Lightweight polypropylene mesh with lower content of polypropylene is added with some absorbable ingredients, and wil these ingredients cause adverse reactionsin vivo? OBJECTIVE:To compare the effect of lightweight polypropylene mesh and standard polypropylene mesh on tension-freerepair ofinguinal hernia. METHODS:Forty patients with inguinal hernia were randomly divided into two groups (n=20 per group):the patients were treated by lightweight polypropylene mesh as experimental group andthose treated by standard polypropylene mesh ascontrol group. At 2 daysafter surgery, white blood cel counts, neutrophils percentage and level of C-reactive protein were detected. Furthermore, pain scores as wel as discomfort incidence and complications were assessed and recorded at 2 days, 1, 3 and 6 months after surgery, respectively. RESULTS AND CONCLUSION:There were no significant differences in postoperative complications between two groups. White blood cel counts and neutrophils percentage in the experimental group were significantly lower than those in the control group (P< 0.05), butthelevel of C-reactive protein had no significant difference. Besides, pain scores had no significant differencebetween the two groups, but the postoperative discomfort incidence in the experimental group was significantly decreasedcompared with the control group (P< 0.05). In conclusion, lightweight polypropylene mesh can reduce postoperative inflammation and discomfort incidence.