Cognition of Colorectal Cancer-related Knowledge and Influencing Factors of Patients with Middle- and Advanced-stage Colorectal Cancer in Inner Mongolia / 肿瘤防治研究

Objective To investigate the cognition of colorectal cancer-related knowledge and influencing factors of patients with middle- and advanced-stage colorectal cancer in ethnic minority areas of Inner Mongolia. Methods According to the national population and the prevalence of colorectal cancer, 277 patients with colorectal cancer were selected by stratified and random sampling in Inner Mongolia. The patients were surveyed in Baotou, Chifeng, Bayannaoer, and other hospitals. The questionnaire included patients' basic information, cognition of colorectal cancer risk factors and screening knowledge, screening information, etc. Results Before suffering from the disease, the patients' knowledge of colorectal cancer (risk factors, early screening knowledge, treatment methods) was low. About 54.9% of patients were unaware of high risk factors for colorectal cancer, 75.8% of patients did not understand the knowledge of early screening of colorectal cancer, and 37.5% of patients did not underst and the treatment of colorectal cancer. The main influencing factors of colorectal cancer cognition were education level and occupation. Patients who work in institutions and enterprises and with higher education level had better cognition. Conclusion Patients with middle- and advanced-stage colorectal cancer in Inner Mongolia have poor knowledge and awareness of risk factors and screening of colorectal cancer before diagnosis. Education level and occupation are factors influencing colorectal cancer cognition, therefore, people with low knowledge rate of colorectal cancer and low education level as well as unemployed laid-off people should be given priority intervention.

Relationship among fasting plasma glacose coefficient of variation and macular morphology and microcirculation in patients with nonproliferative diabetic retinopathy / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To investigate the relationship among the fasting plasma glucose coefficient of variation(FPG-CV)and macular morphology and microcirculation in patients with nonproliferative diabetic retinopathy(NPDR).METHODS: A retrospective analysis of 82 cases(82 eyes)with NPDR admitted to our hospital from February 2018 to June 2022 was the research object, and another 82 cases(82 eyes)of non-diabetic retinopathy(NDR)patients during the same period were selected as the control group, and the clinical data of the two groups of patients were analyzed. Multivariate Logistic regression was used to analyze the risk factors affecting the incidence of NPDR, and the back propagation(BP)neural network model was established and evaluated. Pearson correlation was used to analyze the correlation among FPG-CV and macular morphology and microcirculation in patients. RESULTS: The results of multivariate Logistic regression analysis showed that the disease duration ≥7.2a, glycated hemoglobin A1c(HbA1c)≥7.7%, triglyceride(TG)≥1.9 mmol/L, microalbuminuria(MALB)≥24.5 mg/L, FPG-CV ≥9.8%, superficial capillary plexus-vessel density(SCP-VD)<27.6%, deep capillary plexus-vessel density(DCP-VD)<47.7%, foveal avascular zone(FAZ)area ≥0.38 mm2, central retinal thickness(CRT)≥197.7 μm and subfoveal choroidal thickness(SFCT)<227.7 μm were risk factors for NPDR(P<0.05). The number of hidden layer nodes is 5, and the receiver operating characteristic(ROC)curve, calibration curve and clinical decision curve show that the prediction model has good discrimination, accuracy and validity. The results of Pearson correlation analysis showed that FPG-CV was negatively correlated with SCP-VD, DCP-VD and SFCT(P<0.05); FPG-CV was positively correlated with FAZ area and CRT(P<0.05).CONCLUSION: The course of disease, HbA1c, TG, MALB, FPG-CV, SCP-VD, DCP-VD, FAZ area, CRT and SFCT are all related to the pathogenesis of NPDR. With the increase of FPG-CV, the indexes of macular morphology and microcirculation changed. FPG-CV was negatively correlated with SCP-VD, DCP-VD and SFCT and positively correlated with FAZ area and CRT.

Mechanism of Buyang Huanwu Decoction glycosides against atherosclerotic inflammation through NF-κB signaling pathway / 中国中药杂志

This study aims to explore the effect of Buyang Huanwu Decoction glycosides on the inflammatory response of apolipoprotein E~(-/-)(ApoE~(-/-)) mice and RAW264.7 cells through nuclear factor kappa-B(NF-κB) signaling pathway. In the in vivo experiment, ApoE~(-/-) mice were fed with high-fat diets for 12 weeks to induce the animal model of atherosclerosis, and 75 μg·mL~(-1) oxidized low-density lipoprotein(Ox-LDL) incubated RAW264.7 cells for 24 h to establish the atherosclerosis cell model. Automatic biochemical analyzer, hematoxylin-eosin(HE) staining, enzyme-linked immunosorbent assay(ELISA), Western blot, and droplet digital polymerase chain reaction(PCR) were used to determine the blood lipid levels, aortic intimal thickness, inflammatory factor content, NF-κB pathway-related proteins, and mRNA expression levels, and evaluate arterial atherosclerotic lesions and anti-atherosclerotic mechanisms of the drug. The model of atherosclerosis was successfully established in ApoE~(-/-) mice after 12 weeks of feeding with high-fat diets. In the model group, the plasma levels of total cholesterol(TC), triglyceride(TG), and low-density lipoprotein cholesterol(LDL-C) were increased(P<0.01), the intima of the blood vessels was thickened, the levels of inflammatory factors tumor necrosis factor-α(TNF-α) and interleukin-6(IL-6) were increased, and the protein and mRNA expressions of NF-κB and inhibitor of NF-κB(IκBα) were significantly increased as compared with the control group. Compared with the model group, the high-dose Buyang Huanwu Decoction glycoside group decreased the plasma levels of TC, TG, and LDL-C, reduced the plaque area and thickness and the content of inflammatory factor TNF-α, and inhibited the protein and mRNA expressions of NF-κB and IκBα, with the effect same as Buyang Huanwu Decoction. In the in vivo experiment, 75 μg·mL~(-1) Ox-LDL stimulated RAW264.7 cells for 24 h to successfully establish a foam cell model. As compared with the control group, the nuclear amount of NF-κB and the protein and mRNA expressions of IκBα in the model group increased. Compared with the model group, the middle-dose and high-dose Buyang Huanwu Decoction glycoside groups decreased the nuclear amount of NF-κB and the protein and mRNA expressions of IκBα. The above results show that the glycosides are the main effective substances of Buyang Huanwu Decoction against atherosclerosis, which inhibit the NF-κB pathway and reduce the inflammatory response, thus playing the role against atherosclerotic inflammation same as Buyang Huanwu Decoction.

Effects of tigacycline-based combination therapy onprocalcitonin, high sensitivity C-reactive protein and interleukin-6 in patients with multiple drug-resistant acinetobacterbaumannii post-operative abdominal infection in intensive care unit / 中国医师进修杂志

Objective:To explore the effects of tigacycline-based combination therapy on procalcitonin (PCT), high sensitivity C-reactive protein (hs-CRP) and interleukin-6 (IL-6) in patients with multiple drug-resistant acinetobacterbaumannii post-operative abdominal infection in intensive care unit (ICU).Methods:Seventy-five patients with multiple drug-resistant acinetobacter baumannii post-operative abdominal infection in ICU admitted to West Central Hospital of Hainan Prorvincefrom October 2015 to October 2018 were selected and divided into the control group (37cases) and the observation group (38 cases) according to random number table method. The control group was treated with cefoperazone-sulbactam on the basis of routine treatment, while the observation group was treated with tegacycline on the basis of the control group. Both groups were treated for 1 week. The clearance of acinetobacterbaumannii and clinical efficacy of the two groups were counted; the levels of serum PCT, hs-CRP and IL-6 and ummune function were compared.Results:The clearance rate of acinetobacterbaumannii in the observation group was significantly higher than that in the control group: 76.32%(29/38) vs. 54.05%(20/37), χ2 = 4.10, P = 0.043. Compared with before treatment, the levels of serum PCT, hs-CRP and IL-6 in the two groups were decreased after 1 week of treatment, and the levels of serum PCT, hs-CRP and IL-6 in the observation group were lower than those in the control group ( P<0.05). Compared with before treatment, the levels of peripheral blood CD 3+, CD 4+, CD 4+/CD 8+ were increased and peripheral blood CD 8+ was decreased in both groups, and the levels of peripheral blood CD 3+, CD 4+, CD 4+/CD 8+ in the observation group were higher than those in the control group ( P<0.05), while the level of peripheral blood CD 8+ in the observation group was lower than that in the control group ( P<0.05). The total effective rate in the observation group was significantly higher than that in the control group: 89.47% (34/38) vs. 67.57% (25/37), χ2 = 4.13, P<0.05. Conclusions:Tigacycline combined with cefoperazone-sulbactam in the treatment of intra-abdominal infection after surgery of acinetobacterbaumannii in ICU could reduce the levels of serum PCT, hs-CRP, IL-6, reduce the body′s inflammatory response and improve the immune function, and improve the treatment efficiency of intra-abdominal infection.

Knowledge, Attitude and Practice about Human Papillomavirus and HPV Vaccine in Chinese Mainland: A Meta-analysis / 肿瘤防治研究

Objective To understand and evaluate the knowledge, attitude and practice of female human papillomavirus and HPV vaccine in Chinese mainland. Methods We searched the relevant studies about the knowledge, attitude and behavior factors of HPV infection and HPV vaccine published in PubMed, MEDLINE, CNKI and Wanfang databases about Chinese mainland women from January 1, 1995 to January 31, 2021.Two researchers independently screened the literatures, extracted data and the literatures with quality score≥5 points.Chi square test was used to evaluate its heterogeneity.Begg' s test was used to evaluate publication bias. Results A total of 33 literatures were included, with a total number of 46013 people.The results showed that the total awareness rate of HPV in the population was 65.9%, the lowest rates were 16.0%, 41.2% and 14.4% in Northeast, rural areas and middle school students, respectively; while the highest rates of HPV were 77.4%, 56.3% and 71.0% in Central China, cities and towns and college students, respectively.The main source of HPV knowledge was the network/WeChat official account number (38.9%), and the lowest was family/friend (4.5%).The population's awareness rate of HPV vaccine related knowledge was 41.4%, the highest rates were 51.8% and 69.7% in East China and medical staff, respectively, while the lowest were 23.6% and 12.7% in Southwest and middle school students. Conclusion In order to achieve the total elimination of cervical cancer in China by 2030 as soon as possible, people should strengthen their awareness of HPV and HPV vaccine related knowledge.

Effect of hydromorphone combined with ropivacaine for labor analgesia on hemodynamics, maternal and infant outcomes / 中国医师进修杂志

Objective:To investigate the effect of hydromorphone combined with ropivacaine on hemodynamics, maternal and infant outcomes in labor analgesia.Methods:From April 2018 to April 2020, 150 pregnant women with single full-term pregnancy undergoing labor analgesia in Meishan Hospital Affiliated of West China Hospital, Sichuan University were randomly divided into two groups, with 75 cases in each group. The control group was given ropivacaine for labor analgesia, while the observation group was given hydromorphone combined with ropivacaine for labor analgesia. The scores of visual analogue scale (VAS), heart rate (HR), mean arterial pressure (MAP) and blood oxygen saturation (SpO 2) at the time of entering the room (T 1), after the first dose for 5 min (T 2), 10 min (T 3), after delivery for 30 min (T 4) and 60 min (T 5) were compared between the two groups. Results:The scores of VAS at T 2, T 3, T 4, T 5 in two group were decreased, and the scores of VAS in the observation group were lower than that in the control group: (5.12 ± 0.98) scores vs. (7.11 ± 1.10) scores, (4.39 ± 0.61) scores vs. (5.77 ± 0.75) scores, (3.12 ± 0.38) scores vs. (4.88 ± 0.91) scores, (2.12 ± 0.37) scores vs. (3.98 ± 1.11) scores, the differences were statistically significant ( P<0.05). The levels of HR, MAP, SpO 2 in two groups at different time point had no significant differences ( P>0.05). There were no significant difference between the first stage of labor, the second stage of labor and the third stage of labor ( P>0.05). There was no significant difference in the 5 min Apgar score of newborns and the incidence of maternal adverse reactions between the two groups ( P>0.05). Conclusions:Hydromorphone combined with ropivacaine for labor analgesia effect is ideal, and has little impact on hemodynamics of patients, and will not increase the safety risk of mother and infant.

Effect of miR-203/CREB1 Signaling Regulation Mediated by DNA Methylation on the Proliferation and Apoptosis of Multiple Myeloma Cells / 中国实验血液学杂志

OBJECTIVE@#To investigate the effect of miR-203/CREB1 signaling regulation mediated by DNA methylation on the proliferation, invasion and apoptosis of multiple myeloma (MM) cells.@*METHODS@#The methylation level of miR-203 in the RPMI 8226 cells was detected by bisulfite sequcucing polymerase chain reaction (BSP). The mRNA expression of miR-203 was measured by quantitative real-time polymerase chain reaction. RPMI 8226 cells were treated with DNA methyltransferase inhibitor 5-Aza-2'-deoxycytidine (5-Aza-CdR). The miR-203 mimic in MM cell line RPMI 8226 was transfected to establish overexpressed miR-203 cell. The proliferation, invasion ability and apoptosis of RPMI 8226 cell was detected by CCK-8 assay, Transwell, and flow cytometry, respectively. The targeting relationship between miR-203 and CREB1 was verified by double luciferase report assay. Western blot was used to detect the expression of CREB1 protein.@*RESULTS@#Hypermethylation of miR-203 promoter region and low expression level of miR-203 mRNA were detected in the RPMI 8226 cells, which showed that demethylation could induce the expression of miR-203. The proliferation and invasion ability of RPMI 8226 cells after treated by 5-Aza-CdR were inhibited, and showed statistical significance as compared with blank control group (both P<0.05)，while the apoptosis rate was promoted (P<0.05). The proliferation, invasion ability and apoptosis of overexpressed miR-203 were the same as the demethylation group. Double luciferase report assay confirmed that CREB1 was the direct target of miR-203. The protein level of CREB1 was inhibited by demethylation and showed statistical significance as compared with control group (P<0.05).@*CONCLUSION@#MiR-203 targeting CREB1 mediated by DNA methylation leads to maintain the malignant biological behaviors of MM cells.

Research progress of the regulation of cochlear sensitivity to noise by circadian rhythm / 生理学报

High level noise can damage cochlear hair cells, auditory nerve and synaptic connections between cochlear hair cells and auditory nerve, resulting in noise-induced hearing loss (NIHL). Recent studies have shown that animal cochleae have circadian rhythm, which makes them different in sensitivity to noise throughout the day. Cochlear circadian rhythm has a certain relationship with brain-derived neurotrophic factor and glucocorticoids, which affects the degree of hearing loss after exposure to noise. In this review, we summarize the research progress of the regulation of cochlear sensitivity to noise by circadian rhythm and prospect the future research direction.

Recovery of motor function in rats with complete spinal cord injury following implantation of collagen/silk fibroin scaffold combined with human umbilical cord-mesenchymal stem cells

SUMMARY OBJECTIVE: This study aimed to assess the effect of the collagen/silk fibroin scaffolds seeded with human umbilical cord-mesenchymal stem cells on functional recovery after acute complete spinal cord injury. METHODS: The fibroin and collagen were mixed (mass ratio, 3:7), and the composite scaffolds were produced. Forty rats were randomly divided into the Sham group (without spinal cord injury), spinal cord injury group (spinal cord transection without any implantation), collagen/silk fibroin scaffolds group (spinal cord transection with implantation of the collagen/silk fibroin scaffolds), and collagen/silk fibroin scaffolds + human umbilical cord-mesenchymal stem cells group (spinal cord transection with the implantation of the collagen/silk fibroin scaffolds co-cultured with human umbilical cord-mesenchymal stem cells). Motor evoked potential, Basso-Beattie-Bresnahan scale, modified Bielschowsky's silver staining, and immunofluorescence staining were performed. RESULTS: The BBB scores in the collagen/silk fibroin scaffolds + human umbilical cord-mesenchymal stem cells group were significantly higher than those in the spinal cord injury and collagen/silk fibroin scaffolds groups (p<0.05 or p<0.01). The amplitude and latency were markedly improved in the collagen/silk fibroin scaffolds + human umbilical cord-mesenchymal stem cells group compared with the spinal cord injury and collagen/silk fibroin scaffolds groups (p<0.05 or p<0.01). Meanwhile, compared to the spinal cord injury and collagen/silk fibroin scaffolds groups, more neurofilament positive nerve fiber ensheathed by myelin basic protein positive structure at the injury site were observed in the collagen/silk fibroin scaffolds + human umbilical cord-mesenchymal stem cells group (p<0.01, p<0.05). The results of Bielschowsky's silver staining indicated more nerve fibers was observed at the lesion site in the collagen/silk fibroin scaffolds + human umbilical cord-mesenchymal stem cells group compared with the spinal cord injury and collagen/silk fibroin scaffolds groups (p<0.01, p< 0.05). CONCLUSION: The results demonstrated that the transplantation of human umbilical cord-mesenchymal stem cells on a collagen/silk fibroin scaffolds could promote nerve regeneration, and recovery of neurological function after acute spinal cord injury.

Molluscicidal effect of immersion with 50% wettable powder of niclosamide ethanolamine salt against Oncomelania hupensis on the soil surface and inside the soil layer in winter / 中国血吸虫病防治杂志

Objective To evaluate the molluscicidal effect of 50% wettable powder of niclosamide ethanolamine salt (WPNES) against Oncomelania hupensis on the soil surface and inside the soil layer by immersion method in winter. Methods O. hupensis snails were placed on the soil surface and 2, 5 cm and 10 cm under the soil layer outdoors in winter, and then immersed in 50% WPNES at concentrations of 1 mg/L and 2 mg/L for 1, 3 d and 7 d, while dechlorinated water served as controls. Snail mortality was observed following immersion with 50% WPNES on the soil surface and inside the soil layer. Results Following immersion with 50% WPNES at concentrations of 2 mg/L and 1 mg/L outdoors in winter, the 3-day corrected snail mortality rates were 98.0% and 76.0% on the soil surface, and the 7-day corrected snail mortality rate was both 100.0%. Following immersion with 50% WPNES at concentrations of 2 mg/L and 1 mg/L outdoors in winter, the 7-day corrected snail mortality rates were 95.5% and 85.6% 2 cm below the soil layer, 66.0% and 6.4% 5 cm below the soil layer. However, the 7-day snail mortality rate swere comparable between the 50% WPNES treatment group (at 2 mg/L and 1 mg/L) and controls 10 cm below the soil layer (both P > 0.05). Conclusion Immersion of 50% WPNES at a concentration of 2 mg/L for 7 days presents a high molluscicidal efficacy against O. hupensis on the soil surface and 5 cm within the soil layers in winter.

Arthroscopic Bankart repair combined with Reimplissage for the treatment of recurrent anterior dislocation of shoulder in adults with Hill-Sachs defect / 中国骨伤

OBJECTIVE@#To investigate the method and clinical effects of the treatment of recurrent anterior dislocation of shoulder with Hill-Sachs injury by arthroscopic Bankart repair and Remplissage.@*METHODS@#From March 2016 to March 2019, 106 patients with recurrent anterior dislocation of shoulder with glenoid bone defect less than 20% underwent arthroscopic Bankart repair, including 76 males and 30 females, aged from 18 to 45 (27.3±8.6) years, 59 cases of left shoulder and 47 cases of right shoulder. Range of motion (ROM), American Shoulder and Elbow Surgeons(ASES) score, Constant-Murley score and Rowe score were used to evaluate shoulder functionand stability before and after operation.@*RESULTS@#All patients were followed up, and the duration ranged from 21 to 60 months, with a mean of (41.5± 8.5) months. One patient developed infection after operation, and the infection was controlled after arthroscopic debridement again. The remaining patients did not have clinical complications such as infection, intra articular hematocele and redislocation. Shoulder flexion and lifting increased from (158.33±15.72) ° preoperatively to (169.43±10.04) ° at the latest follow up, and internal rotation changed from T7 (T4 to T10) preoperatively to T8 (T5 to T10) at the latest follow up;the average lateral external rotation and abduction 90 ° external rotation decreased from (58.46±15.51) ° preoperatively and (99.37±14.09) ° to (53.18±14.90) ° and (92.52±13.10) ° at the latest follow up, respectively. The ASES score, Constant -Murley score and Rowe score were significantly improved.@*CONCLUSION@#The clinical effect of rehabilitation of Bankart repair combined with Remplissageunder arthroscopy in the treatment of recurrent dislocation of shoulder joint in adults with Hill-Sachs defect is satisfactory. Although the external rotation function is weaker than that before operation, it can effectively reconstruct the shoulder function and avoid the occurrence ofdislocation after operation.

Mechanism of Astragali Radix-Coptis Rhizoma pair in treating type 2 diabetes mellitus based on network pharmacology / 中国中药杂志

This study aims to explore the main mechanism of Astragali Radix-Coptis Rhizoma pair(hereinafter referred to as the pair) in the treatment of type 2 diabetes mellitus(T2 DM) based on network pharmacology and animal experiment. The main Chinese medicine compound prescriptions for T2 DM were retrieved from CNKI database and the medicinals with high frequency among these prescriptions were screened. The active components in the above medicinals were searched from TCMSP, TCMID, and previous research, targets of the components from SwissTargetPrediction and SEA, and targets for the treatment of T2 DM from DISGENET, TTD, and DrugBank. Thereby, the medicinal-component-disease-target network was constructed with Cytoscape. The targets were input in String database to yield the related proteins and the protein-protein interaction(PPI) network was constructed by Cytoscape. The biological functions of proteins in the PPI network were analyzed by Cluego. Then, high-fat high-sugar diet and 30 mg·kg~(-1) streptozotocin(STZ, intraperitoneal injection, once) were employed to induce T2 DM in rats and the T2 DM rats were classified into the control group, model group, positive drug(metformin) group, and pair group. After one month of administration, the changes of blood glucose and blood lipids [triglyceride(TG), cholesterol(CHO), low density lipoprotein(LDL), high density lipoprotein(HDL)] were detected with biochemical methods and pathological changes of islet and collagen deposition in pancreatic tissue by HE staining and Masson staining, respectively. The result showed that pair can be used for T2 DM treatment. ras-related C3 botulinum toxin substrate 1(RAC1), paraoxonase 1(PON1), beta-galactoside alpha 2,6-sialyltransferase 1(ST6 GAL1), insulin receptor(INSR), sex hormone-binding globulin(SHBG), ileal sodium/bile acid cotransporter(SLC10 A2), endothelin-1 receptor A(EDNRA), peroxisome proliferator-activated receptor A(PPARA), endothelin receptor B(EDNRB), and 5-hydroxytryptamine receptor 2 A(HTR2 A) were the targets of the pair for the treatment of T2 DM. The main biological functions of the pair were regulating the metabolism of blood glucose and li-pids and protecting the cardiovascular system. The fasting blood glucose, and serum TG, CHO, and LDL were higher(P<0.01) and the HDL was lower(P<0.05) in the model group than in the control group on the 7 th, 14 th, and 28 th days. The fas-ting blood glucose and the serum TG, CHO, and LDL decreased(P<0.05) and the serum HDL increased(P<0.05) in the metformin group and the pair group as compared with those in the model group on the 14 th and 28 th days. There were no significant differences in blood glucose, TG, CHO, LDL, and HDL between the metformin group and the pair group. Rats in the model group demonstrated damaged structures of islets and pancreas, obviously increased deposition of collagen in islets and pancreas, and blurred cell boundaries. Metformin and the pair significantly alleviated the damaged structures and collagen deposition. The pair can effectively regulate the disorders of blood glucose and lipid metabolism in T2 DM and protect the structure and functions of pancreas and islets by controlling cardiovascular system, which is worthy of clinical application and can be used for drug development.

Oral Mucosal Diffuse Large B-cell Lymphoma Caused by Long-term Oral Methotrexate:Report of One Case / 中国医学科学院学报

A case of primary oral mucosal diffuse large B-cell lymphoma(DLBCL)due to long-term use of methotrexate(MTX)for the treatment of rheumatoid arthritis(RA)was admitted to the Department of Hematology,Fujian Medical University Union Hospital.We analyzed and discussed the clinical features,diagnosis and treatment,and prognosis of specific malignant lymphoma induced by MTX in this RA patient.Our purpose is to improve the awareness and knowledge of other iatrogenic immunodeficiency-associated lymphoproliferative disorders of clinicians and pathologists.This study provides a new reference for the clinical diagnosis and treatment of MTX-associated DLBCL.

A Case-Control Study on Receptor Gene Polymorphism and Risk Suffering from Adult Acute Leukemia in Fujian Area / 中国实验血液学杂志

OBJECTIVE@#To investigate the correlation of receptor gene (P2X7, VDR and SLC19A1) polymorphisms with risk suffering from acute leukemia (AL) in Fujian area.@*METHODS@#Ninety-three cases of newly diagnosed AL as AL group and 90 persons not suffered from hematologic and other tumors as control group were selected and used for comparative analysis of receptor gene polymorphisms and risk suffering from AL between case and control groups. The bone marrow and peripheral blood were collected, from which the DNA was extracted. The PCR-RFLP was used to detect 8 SNP sites (P2X7: rs208294, rs2230911, rs3751143; VDR: rs2228570, rs7975232; SLC194A1: rs1051266, rs1131596, rs3788200) of receptor genes related with the environment response, and the genotypes analysis was used to the correlation of receptor gene polymorphisms with risk suffering from adult AL.@*RESULTS@#The unvariate logistic analysis showed that as compared with control group, P2X7 rs208294 T>C mutation and rs3751143 A>C mutation in codominant model, dominant model and over-dominant model were higher in case group, moreover the differences were statistically significant (PA mutation could increase the risk suffering from AL (PC mutation is one of protective factors against adult acute leukemia.

SinoDuplex: An Improved Duplex Sequencing Approach to Detect Low-frequency Variants in Plasma cfDNA Samples / 基因组蛋白质组与生物信息学报·英文版

Accurate detection of low frequency mutations from plasma cell-free DNA in blood using targeted next generation sequencing technology has shown promising benefits in clinical settings. Duplex sequencing technology is the most commonly used approach in liquid biopsies. Unique molecular identifiers are attached to each double-stranded DNA template, followed by production of low-error consensus sequences to detect low frequency variants. However, high sequencing costs have hindered application of this approach in clinical practice. Here, we have developed an improved duplex sequencing approach called SinoDuplex, which utilizes a pool of adapters containing pre-defined barcode sequences to generate far fewer barcode combinations than with random sequences, and implemented a novel computational analysis algorithm to generate duplex consensus sequences more precisely. SinoDuplex increased the output of duplex sequencing technology, making it more cost-effective. We evaluated our approach using reference standard samples and cell-free DNA samples from lung cancer patients. Our results showed that SinoDuplex has high sensitivity and specificity in detecting very low allele frequency mutations. The source code for SinoDuplex is freely available at https://github.com/SinOncology/sinoduplex.

Monoclonal Antibody-Based Treatments for Neuromyelitis Optica Spectrum Disorders: From Bench to Bedside / 神经科学通报·英文版

Neuromyelitis optica (NMO)/NMO spectrum disorder (NMOSD) is a chronic, recurrent, antibody-mediated, inflammatory demyelinating disease of the central nervous system, characterized by optic neuritis and transverse myelitis. The binding of NMO-IgG with astrocytic aquaporin-4 (AQP4) functions directly in the pathogenesis of >60% of NMOSD patients, and causes astrocyte loss, secondary inflammatory infiltration, demyelination, and neuron death, potentially leading to paralysis and blindness. Current treatment options, including immunosuppressive agents, plasma exchange, and B-cell depletion, are based on small retrospective case series and open-label studies. It is noteworthy that monoclonal antibody (mAb) therapy is a better option for autoimmune diseases due to its high efficacy and tolerability. Although the pathophysiological mechanisms of NMOSD remain unknown, increasingly, therapeutic studies have focused on mAbs, which target B cell depletion, complement and inflammation cascade inactivation, blood-brain-barrier protection, and blockade of NMO-IgG-AQP4 binding. Here, we review the targets, characteristics, mechanisms of action, development, and potential efficacy of mAb trials in NMOSD, including preclinical and experimental investigations.

Monoclonal Antibody-Based Treatments for Neuromyelitis Optica Spectrum Disorders: From Bench to Bedside / 神经科学通报·英文版

Neuromyelitis optica (NMO)/NMO spectrum disorder (NMOSD) is a chronic, recurrent, antibody-mediated, inflammatory demyelinating disease of the central nervous system, characterized by optic neuritis and transverse myelitis. The binding of NMO-IgG with astrocytic aquaporin-4 (AQP4) functions directly in the pathogenesis of >60% of NMOSD patients, and causes astrocyte loss, secondary inflammatory infiltration, demyelination, and neuron death, potentially leading to paralysis and blindness. Current treatment options, including immunosuppressive agents, plasma exchange, and B-cell depletion, are based on small retrospective case series and open-label studies. It is noteworthy that monoclonal antibody (mAb) therapy is a better option for autoimmune diseases due to its high efficacy and tolerability. Although the pathophysiological mechanisms of NMOSD remain unknown, increasingly, therapeutic studies have focused on mAbs, which target B cell depletion, complement and inflammation cascade inactivation, blood-brain-barrier protection, and blockade of NMO-IgG-AQP4 binding. Here, we review the targets, characteristics, mechanisms of action, development, and potential efficacy of mAb trials in NMOSD, including preclinical and experimental investigations.

Regulatory Mechanism of Traditional Chinese Medicine in Promoting Angiogenesis After Cerebral Infarction Based on STAT3/miRNA Feedback Loop / 中国实验方剂学杂志

Cerebral infarction is a clinical disease with corresponding neurological symptoms caused by cerebral ischemia and hypoxia caused by cerebral blood supply disorder. It is one of the most common cerebrovascular diseases and a serious threat to human health. The prevention and treatment of cerebral infarction has an important social significance. Angiogenesis is the key starting point for medical treatment of cerebral infarction, and signal transduction and transcriptional activators (STAT)/hypoxia inducing factor-1(HIF-1)/vascular endothelial growth factor (VEGF) pathway are important pathways to mediate angiogenesis after cerebral infarction. This paper took the angiogenesis as the starting point and the upstream molecules of STAT/HIF-1/VEGF signal pathway STAT3 and miRNA as the main study objects, and comprehensively discussed the results of chip sequencing, experimental research, traditional Chinese medicine (TCM) pathogenesis and TCM treatment. Based on the regulatory mode of "TF-miRNA" and the idea of "micro-whole", it is suggested that under the guidance of the basic theory of TCM, cubic compound prescriptions of TCM and its active components might activate the STAT/HIF-1/VEGF signal pathway through STAT3/miRNA feedback loop to promote angiogenesis after cerebral infarction, which puts forward a deep molecular mechanism and new direction for the treatment of cerebral infarction with TCM.

Relationship between the Degeneration and Regeneration of Neuromuscular Junction and Wound Age during the Repair of Mouse Skeletal Muscle Contusion / 法医学杂志

Objective To investigate the morphological changes in the degeneration and regeneration of neuromuscular junctions （NMJ） during the repair of mouse skeletal muscle contusion and discuss the correlation between the degeneration and regeneration of NMJ and wound age. Methods A total of 50 healthy adult male mice were randomly divided into 10 groups, including 9 experimental groups and 1 control group. Immunofluorescent staining was applied, and neurofilament was marked with neurofilament protein-H （NF-H）, presynaptic membrane was marked with synaptophysin （Syn）, presynaptic membrane was marked with acetylcholine receptor （AChR）. Morphological changes of NMJ regeneration at different time points after mouse skeletal muscle contusion were detected. Results The neurofilament and presynaptic membrane of NMJ at the junction of contusion zones began to degrade after contusion, and completed degradation at about 3 d post-injury. Then they gradually regenerated, roughly completing the regeneration at about 21 d and basically reaching the control group level. The ratio of presynaptic membrane quantity to presynaptic membrane quantity showed a trend of decreasing then rising and finally reaching the control level. Conclusion During the repair of mouse skeletal muscle contusion, the morphological changes and wound age of the NMJ at the junction of contusion zones have a close correlation, which is expected to be one of the biological indicators for forensic skeletal muscle wound age estimation.

Relationship between Changes of Pericyte Number and Wound Age during Repair of Skeletal Muscle Contusion in Mice / 法医学杂志

Objective To observe the change pattern of pericyte number at different time periods after mice skeletal muscle contusion and discuss its role in wound age estimation. Methods A mice gastrocnemius muscle contusion model was established. The form and number changes of pericytes at 1, 3, 5, 7, 9, 14, and 28 d post-injury were detected by multiple immunofluorescence staining. Results Compared with the slender shape of pericytes in normal skeletal muscles, pericytes in the contusion area had increased volume, rounder form and a round nuclei. Part of pericytes were found to express satellite cell markers paired-box transcription factor （Pax7） or myoblast determination 1 （MyoD1）. The changes of pericyte number in skeletal muscles after contusion were time-dependant, and showed unimodal distribution with the extension of wound age. In the central contusion area, the number of pericytes peaked at 5 d post-injury while in the peripheral contusion area, the number of pericytes peaked at 5 d and 7 d post-injury. Conclusion The number of pericytes in contusion area varies time-dependently after skeletal muscle contusion in mice and might be a reference index for muscle wound age estimation, and is involved in the repair and regeneration of skeletal muscle injury.