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1.
Biomedical and Environmental Sciences ; (12): 604-613, 2023.
Article in English | WPRIM | ID: wpr-981093

ABSTRACT

OBJECTIVE@#Campylobacter jejuni NCTC11168 is commonly used as a standard strain for flagellar biosynthesis research. In this report, two distinguished phenotypic isolates (CJ1Z, flhA mutant strain, lawn; CJ2S, flhA complemented strain, normal colony) appeared during laboratory passages for NCTC11168.@*METHODS@#Phenotypic assessments, including motility plates, transmission electron microscopy, biofilm formation assay, autoagglutination assay, and genome re-sequencing for these two isolates (CJ1Z, flhA mutant strain; CJ2S, flhA complemented strain) were carried out in this study.@*RESULTS@#Transmission electron microscopy revealed that the flagellum was lost in CJ1Z. Phenotypic assessments and genome sequencing of the two isolates were performed in this study. The capacity for biofilm formation, colony auto-agglutination, and isolate motility was reduced in the mutant CJ1Z. Comparative genomic analysis indicated a unique native nucleotide insertion in flhA (nt, 2154) that caused the I719Y and I720Y mutations and early truncation in flhA.@*CONCLUSION@#FlhA has been found to influence the expression of flagella in C. jejuni. To the best of our knowledge, this is the first study to describe the function of the C-terminal of this protein.


Subject(s)
Campylobacter jejuni/genetics , Bacterial Proteins/metabolism , Mutation , Biological Variation, Population
2.
Biomedical and Environmental Sciences ; (12): 510-516, 2023.
Article in English | WPRIM | ID: wpr-981081

ABSTRACT

OBJECTIVE@#Diffuse large B-cell lymphoma (DLBCL) is often associated with bone marrow infiltration, and 2-deoxy-2-(18F) fluorodeoxyglucose positron emission tomography/computed tomography ( 18F-FDG PET/CT) has potential diagnostic significance for bone marrow infiltration in DLBCL.@*METHODS@#A total of 102 patients diagnosed with DLBCL between September 2019 and August 2022 were included. Bone marrow biopsy and 18F-FDG PET/CT examinations were performed at the time of initial diagnosis. Kappa tests were used to evaluate the agreement of 18F-FDG PET/CT with the gold standard, and the imaging features of DLBCL bone marrow infiltration on PET/CT were described.@*RESULTS@#The total detection rate of bone marrow infiltration was not significantly different between PET/CT and primary bone marrow biopsy ( P = 0.302) or between the two bone marrow biopsies ( P = 0.826). The sensitivity, specificity, and Youden index of PET/CT for the diagnosis of DLBCL bone marrow infiltration were 0.923 (95% CI, 0.759-0.979), 0.934 (95% CI, 0.855-0.972), and 0.857, respectively.@*CONCLUSION@#18F-FDG PET/CT has a comparable efficiency in the diagnosis of DLBCL bone marrow infiltration. PET/CT-guided bone marrow biopsy can reduce the misdiagnosis of DLBCL bone marrow infiltration.


Subject(s)
Humans , Positron Emission Tomography Computed Tomography/methods , Fluorodeoxyglucose F18 , Bone Marrow/pathology , Retrospective Studies , Positron-Emission Tomography/methods , Lymphoma, Large B-Cell, Diffuse/pathology
3.
Chinese Journal of Preventive Medicine ; (12): 849-856, 2023.
Article in Chinese | WPRIM | ID: wpr-985486

ABSTRACT

Objective: To identify the main metals involved in cognitive impairment in the Chinese oldest old, and explore the association between these metal exposures and cognitive impairment. Methods: A cross-sectional study was conducted on 1 568 participants aged 80 years and older from Healthy Aging and Biomarkers Cohort Study (2017 to 2018). Fasting venous blood was collected to measure the levels of nine metals (selenium, lead, cadmium, arsenic, antimony, chromium, manganese, mercury, and nickel). The cognitive function of these participants was evaluated by using the Chinese version of the Mini-Mental State Examination (CMMSE). The random forest (RF) was applied to independently identify the main metals that affected cognitive impairment. The multivariate logistic regression model and restricted cubic splines (RCS) model were used to further verify the association of the main metals with cognitive impairment. Results: The age of 1 568 study subjects was (91.8±7.6) years old, including 912 females (58.2%) and 465 individuals (29.7%) with cognitive function impairment. Based on the RF model (the out-of-bag error rate was 22.9%), the importance ranking of variables was conducted and the feature screening of five times ten-fold cross-validation was carried out. It was found that selenium was the metal that affected cognitive function impairment, and the other eight metals were not included in the model. After adjusting for covariates, the multivariate logistic regression model showed that with every increase of 10 μg/L of blood selenium levels, the risk of cognitive impairment decreased (OR=0.921, 95%CI: 0.889-0.954). Compared with the lowest quartile(Q1) of blood selenium, the ORs (95%CI) of Q3 and Q4 blood selenium were 0.452 (0.304-0.669) and 0.419 (0.281-0.622) respectively. The RCS showed a linear dose-response relationship between blood selenium and cognitive impairment (Pnonlinear>0.05). Conclusion: Blood selenium is negatively associated with cognitive impairment in the Chinese oldest old.


Subject(s)
Aged, 80 and over , Female , Humans , Selenium , Cohort Studies , Cross-Sectional Studies , Metals/analysis , Cognitive Dysfunction/epidemiology , China/epidemiology
4.
Journal of Geriatric Cardiology ; (12): 293-308, 2023.
Article in English | WPRIM | ID: wpr-982187

ABSTRACT

BACKGROUND@#Butylphthalide (NBP) and edaravone (EDV) injection are common acute ischemic stroke medications in China, but there is a lack of large real-world safety studies on them. This study aimed to determine the incidence of adverse events, detect relevant safety signals, and assess the risk factors associated with these medications in real-world populations.@*METHODS@#In this study, data of acute ischemic stroke patients were extracted from the electronic medical record database of six tertiary hospitals between January 2019 and August 2021. Baseline confounders were eliminated using propensity score matching. The drugs' safety was estimated by comparing the results of 24 laboratory tests standards on liver function, kidney function, lipid level, and coagulation function. The drugs' relative risk was estimated by logistic regression. A third group with patients who did not receive NBP or EDV was constructed as a reference. Prescription sequence symmetry analysis was used to evaluate the associations between adverse events and NBP and EDV, respectively.@*RESULTS@#81,292 patients were included in this study. After propensity score matching, the NBP, EDV, and third groups with 727 patients in each group. Among the 15 test items, the incidence of adverse events was lower in the NBP group than in the EDV group, and the differences were statistically significant. The multivariate logistic regression equation revealed that NBP injection was not a promoting factor for abnormal laboratory test results, whereas EDV had statistically significant effects on aspartate transaminase, low-density lipoprotein cholesterol and total cholesterol. Prescription sequence symmetry analysis showed that NBP had a weak correlation with abnormal platelet count. EDV had a positive signal associated with abnormal results in gamma-glutamyl transferase, alanine aminotransferase, aspartate aminotransferase, prothrombin time, and platelet count.@*CONCLUSIONS@#In a large real-world population, NBP has a lower incidence of adverse events and a better safety profile than EDV or other usual medications.

5.
Chinese Critical Care Medicine ; (12): 88-92, 2023.
Article in Chinese | WPRIM | ID: wpr-991984

ABSTRACT

Objective:To investigate the effects of continuous renal replacement therapy (CRRT) on plasma concentration, clinical efficacy and safety of colistin sulfate.Methods:Clinical data of patients received with colistin sulfate were retrospectively analyzed from our group's previous clinical registration study, which was a prospective, multicenter observation study on the efficacy and pharmacokinetic characteristics of colistin sulfate in patients with severe infection in intensive care unit (ICU). According to whether patients received blood purification treatment, they were divided into CRRT group and non-CRRT group. Baseline data (gender, age, whether complicated with diabetes, chronic nervous system disease, etc), general data (infection of pathogens and sites, steady-state trough concentration, steady-state peak concentration, clinical efficacy, 28-day all-cause mortality, etc) and adverse event (renal injury, nervous system, skin pigmentation, etc) were collected from the two groups.Results:A total of 90 patients were enrolled, including 22 patients in the CRRT group and 68 patients in the non-CRRT group. ① There was no significant difference in gender, age, basic diseases, liver function, infection of pathogens and sites, colistin sulfate dose between the two groups. Compared with the non-CRRT group, the acute physiology and chronic health evaluation Ⅱ (APACHE Ⅱ) and sequential organ failure assessment (SOFA) were higher in the CRRT group [APACHE Ⅱ: 21.77±8.26 vs. 18.01±6.34, P < 0.05; SOFA: 8.5 (7.8, 11.0) vs. 6.0 (4.0, 9.0), P < 0.01], serum creatinine level was higher [μmol/L: 162.0 (119.5, 210.5) vs. 72.0 (52.0, 117.0), P < 0.01]. ② Plasma concentration: there was no significant difference in steady-state trough concentration between CRRT group and non-CRRT group (mg/L: 0.58±0.30 vs. 0.64±0.25, P = 0.328), nor was there significant difference in steady-state peak concentration (mg/L: 1.02±0.37 vs. 1.18±0.45, P = 0.133). ③ Clinical efficacy: there was no significant difference in clinical response rate between CRRT group and non-CRRT group [68.2% (15/22) vs. 80.9% (55/68), P = 0.213]. ④ Safety: acute kidney injury occurred in 2 patients (2.9%) in the non-CRRT group. No obvious neurological symptoms and skin pigmentation were found in the two groups. Conclusions:CRRT had little effect on the elimination of colistin sulfate. Routine blood concentration monitoring (TDM) is warranted in patients received with CRRT.

6.
Chinese Journal of Otorhinolaryngology Head and Neck Surgery ; (12): 240-249, 2023.
Article in Chinese | WPRIM | ID: wpr-971440

ABSTRACT

Objective: To investigate the relationship between the long-non-coding RNA LINC00342 expression and the clinicopathological parameters of head and neck squamous cell carcinoma (HNSCC) and the biological function of LINC00342 in HNSCC cells. Methods: The expression level of LINC00342 in the HNSCC was analyzed using transcriptome sequencing data from TCGA (The Cancer Genome Atlas) database, and the expressions of LINC00342 in laryngeal squamous cell carcinoma tissues (LSCC) of 27 patients in the First Hospital of Shanxi Medical University were detected by transcriptome sequencing. The expression levels of LINC00342 in human embryonic lung diploid cells 2BS, HNSCC cell lines FD-LSC-1, CAL-27 and Detroit562 were determined by real-time quantitative polymerase chain reaction (qPCR). RNAi (RNA interference) was used for LINC00342 knockdown in HNSCC cell lines, and the changes of malignant phenotype in the tumor cells after LINC00342 knockdown were examined by cell counting kit-8 (CCK-8), colony formation, flow cytometry, transwell invasion and migration assays. Bioinformatics analysis was performed to construct a LINC00342-centered competing endogenous RNA (ceRNA) regulatory network, and GO (Gene Ontology) enrichment analysis was performed. Statistical analysis and graphing were performed using SPSS 25.0 software and GraphPad Prism 6 software. Results: Mean LINC00342 levels in HNSCC tissues and TCGA database were higher than that in normal control tissues, but with no significantly statistical difference (P=0.522). LINC00342 expression levels were positively correlated with cervical lymph node metastasis and pathological grade in patients with HNSCC, with higher expression in male patients than in female patients (P<0.05). Transcriptome sequencing analysis showed that mean expression level of LINC00342 in LSCC tissues of 27 patients was significantly higher than that in the paired adjacent normal mucosa tissues (t=1.56, P=0.036). LINC00342 expression was significantly upregulated in HNSCC cell lines FD-LSC-1, CAL-27 and Detroit562 (t-values of -12.17, -23.26 and -388.57, respectively; all P<0.001). Knockdown of LINC00342 by transfecting si-LINC00342-1 and si-LINC00342-2 inhibited HNSCC cell proliferation (t-values of 8.95 and 4.84, 2.70 and 5.55, 2.02 and 3.70, respectively), colony formation (t-values of 6.66 and 6.17, 7.38 and 11.65, 4.90 and 5.79, respectively), migration (t-values of 8.21 and 7.19, 5.76 and 6.46, 6.28 and 9.92, respectively) and invasion abilities (t-values of 9.29 and 10.25, 11.30 and 11.36, 8.02 and 8.66, respectively), but promoting apoptosis in cell lines FD-LSC-1 and CAL-27 (t-values of -2.21 and -5.83, -3.05 and -5.25 respectively) (all P-values<0.05). The LINC00342-centered ceRNA network consists of 10 downregulated microRNA and 647 upregulated mRNA nodes. GO analysis results indicated that LINC00342-regulated mRNAs were enriched in 22 biological processes, 32 molecular functions, and 12 cellular components. Conclusion: High level of LINC00342 is associated with the malignant progression of HNSCC. LINC00342 promotes the proliferation, migration, invasion, and antagonizes apoptosis of HNSCC cells, which serves as a potential molecular marker in HNSCC.


Subject(s)
Humans , Female , Male , Squamous Cell Carcinoma of Head and Neck/genetics , RNA, Long Noncoding/genetics , Clinical Relevance , Epithelial Cells , Head and Neck Neoplasms/genetics
7.
Journal of Xi'an Jiaotong University(Medical Sciences) ; (6): 236-242, 2023.
Article in Chinese | WPRIM | ID: wpr-1005750

ABSTRACT

【Objective】 To investigate our experience in the diagnosis and treatment of acute graft-versus-host disease (aGVHD) after liver transplantation in surgical ICU. 【Methods】 We retrospectively analyzed the general data, clinical manifestation, diagnosis, and treatment strategies of five patients with aGVHD after liver transplantation in The First Affiliated Hospital of Xi’an Jiaotong University from January 2000 to December 2019. 【Results】 The incidence rate of aGVHD was 5/850 (5.88 ‰), and all the five patients were male and aged 40-64 years (mean age 56 years). Diabetes, hepatocellular carcinoma, liver transplantation, transcatheter arterial chemoembolization (TACE), and high concentration of immune agents were the main risk factors associated with the development of aGVHD. The average time from surgery until clinical symptom of aGVHD was 15 to 32 days. In our patients with aGVHD, the most common symptom was fever (5/5), followed by skin rash (5/5), pancytopenia (5/5), diarrhea (3/5), and secondary pulmonary infection (3/5). However, liver functions were not remarkable affected. Diagnostic criteria for aGVHD in our center include acute onset, risk factors, typical clinical manifestation, and histopathology after exclusion of differential diseases. Our treatment strategies include high-dose methylprednisolone, stopping/reducing current immunosuppressive protocol, and antilymphocytic agents as second-line treatment. Empirical antibiotics and antifungal agents play a vital part in infections after transplantation. Hematopoietic cytokine was administered to treat pancytopenia. Patients also received supportive therapy, such as isolation and nutritional support, with the goal of benefiting the entire condition. Despite intensive treatment, two of five patients (40%) with aGVHD died due to sepsis and multiorgan failure. One case (20%) died of intracranial hemorrhage and one case (20%) died of tuberculosis. Only one case (20%) stayed alive after 1-year follow-up without complications. 【Conclusion】 The diagnosis of aGVHD relies on clinical suspicion and is confirmed by skin pathology. The patients with aGVHD had early onset (38.5 ℃), large rash range (>50%), complication of sepsis, and poor response to hematopoietic cytokine therapy indicate poor prognosis. Intensive treatment should be started immediately after aGVHD diagnosis. In conclusion, we strongly suggest an early identification, diagnosis, and vigorous treatment strategy, which is the key to improving the prognosis of aGVHD.

8.
China Journal of Chinese Materia Medica ; (24): 295-300, 2022.
Article in Chinese | WPRIM | ID: wpr-927970

ABSTRACT

Technical Specifications for Revision of Safety Information in Marketed Chinese Patent Medicine Instructions,a series of group standards,were proposed by Professor ZHANG Bing from Research Center for Pharmacovigilance and Rational Use of Traditional Chinese Medicine,and underwent centralized management by Chinese Association of Chinese Medicine. They were officially released on July 23 and implemented on July 31,2021. The series of group standards consist of six sections,including general principles,adverse drug events,contraindications,precautions,application for special populations,and warnings. The section of general principles is comprised of holistic and programmatic expressions,which explain the general technical requirements for revising the marketed Chinese patent medicine instructions. The other five sections focus on information collection,screening,transformation,and illustration of specific items,forming a standardized revision technical process. This series of standards is the result of multiple rounds of research and the suggestions of more than 200 experts in different professional fields of " medicine-pharmacy-management-law-enterprise" have been gathered therein to reach a consensus. With the purposes of establishing standardized technical specifications for the revision of safety information in the marketed Chinese patent medicine instructions,guiding marketing authorization holders in revising the instructions,filling the gaps in the research of Chinese patent medicine instructions,promoting the deve-lopment of pharmaceutical care and academic research,and encouraging the rational and safe medication of Chinese patent medicine,the series of group standards is of great significance.


Subject(s)
Humans , China , Drug-Related Side Effects and Adverse Reactions , Drugs, Chinese Herbal/adverse effects , Medicine, Chinese Traditional , Nonprescription Drugs/adverse effects , Pharmacovigilance
9.
China Journal of Chinese Materia Medica ; (24): 285-294, 2022.
Article in Chinese | WPRIM | ID: wpr-927969

ABSTRACT

Drug instructions,the statutory and technical documents recording effectiveness and safety information,are an important basis for guiding doctors,pharmacists,and patients to use drugs rationally,and their scientificity,standardization,and accuracy directly affect the medication safety of the public. The sections of adverse drug events,contraindications,precautions,warnings,and application for specific populations in drug instructions directly express safety information and measures for rational use of drugs. In the drug life cycle,marketing authorization holders( MAHs) need to update safety information in the instructions promptly to ensure the safety and effectiveness of clinical drug medication. At present,revising instructions is an important measure to control drug risks. In the drug life cycle,in order to standardize the revision of safety information in the instructions by MAHs and eliminate inexact terms such as " unclear",the Technical Specifications for Revision of Safety Information in Marketed Chinese Patent Medicine Instructions,a series of group standards,have been established under the guidance of Standardization Department,China Association of Chinese Medicine. Therefore,on the basis of the existing rules and regulations,the standardized technical procedures for revising instructions came into being to help clinical safe and rational medication of drugs,and implement the strategy of " Healthy China".


Subject(s)
Humans , China , Drug-Related Side Effects and Adverse Reactions , Drugs, Chinese Herbal/adverse effects , Medicine, Chinese Traditional , Nonprescription Drugs/adverse effects , Reference Standards
10.
Biomedical and Environmental Sciences ; (12): 485-493, 2022.
Article in English | WPRIM | ID: wpr-939586

ABSTRACT

Objective@#Most acute promyelocytic leukemia cases are characterized by the PML-RARa fusion oncogene and low white cell counts in peripheral blood.@*Methods@#Based on the frequent overexpression of miR-125-family miRNAs in acute promyelocytic leukemia, we examined the consequence of this phenomenon by using an inducible mouse model overexpressing human miR-125b.@*Results@#MiR-125b expression significantly accelerates PML-RARa-induced leukemogenesis, with the resultant induced leukemia being partially dependent on continued miR-125b overexpression. Interestingly, miR-125b expression led to low peripheral white cell counts to bone marrow blast percentage ratio, confirming the clinical observation in acute promyelocytic leukemia patients.@*Conclusion@#This study suggests that dysregulated miR-125b expression is actively involved in disease progression and pathophysiology of acute promyelocytic leukemia, indicating that targeting miR-125b may represent a new therapeutic option for acute promyelocytic leukemia.


Subject(s)
Animals , Humans , Mice , Leukemia, Promyelocytic, Acute/metabolism , MicroRNAs/genetics , Oncogene Proteins, Fusion/therapeutic use
11.
Journal of Experimental Hematology ; (6): 1136-1140, 2021.
Article in Chinese | WPRIM | ID: wpr-888529

ABSTRACT

OBJECTIVE@#To evaluate the efficacy and safety of CHOP regimen based on doxorubicin hydrochloride liposome in the initial treatment of elderly patients with diffuse large B-cell lymphoma (DLBCL).@*METHODS@#Thirty-one patients with DLBCL treated from January 1, 2012 to December 31, 2019 were analyzed retrospectively, their median age was 83 (71-95) years old, and all of them were in Ⅲ-Ⅳ stage, including 17 cases who had international prognostic index (IPI) ≥ 3. The patients were treated with R-CHOP and CHOP regimens based on doxorubicin hydrochloride liposome. The efficacy and safety were evaluated during and after treatment.@*RESULTS@#A total of 219 chemotherapy cycles and 7 median cycles were performed in 31 patients. The overall response (OR) rate and complete remission (CR) rate was 80.7% (25/31) and 61.3% (19/31), respectively, as well as 2 cases (6.5%) stable, 4 cases (12.9%) progressive. The main toxicities were as follows: the incidence of grade Ⅲ -Ⅳ neutropenia was 29% (9/31); two patients (6.5%) developed degree Ⅰ-Ⅱ cardiac events, which were characterized by new degree Ⅰ atrioventricular block; there were no cardiac events requiring emergency treatment and discontinuation of chemotherapy. The 1-year, 2-year and 3-year overall survival rate was 83.9%, 77.4% and 61.3%, respectively. The 1-year, 2-year and 3-year progression-free survival rate was 77.4%, 64.5% and 61.3%, respectively.@*CONCLUSION@#The chemotherapy regimen based on doxorubicin hydrochloride liposome has better efficacy and higher cardiac safety for elderly patients with DLBCL.


Subject(s)
Aged , Aged, 80 and over , Humans , Antineoplastic Combined Chemotherapy Protocols , Cyclophosphamide/therapeutic use , Doxorubicin/therapeutic use , Liposomes/therapeutic use , Lymphoma, Large B-Cell, Diffuse/drug therapy , Prednisolone , Prednisone/therapeutic use , Retrospective Studies , Rituximab/therapeutic use , Vincristine/therapeutic use
12.
China Journal of Chinese Materia Medica ; (24): 4563-4568, 2021.
Article in Chinese | WPRIM | ID: wpr-888158

ABSTRACT

In order to solve the problems of confusion in clinical medication and imperfect instructions in Chinese patent medicines(CPMs), the Standardization Department of the China Association of Chinese Medicine and Center for Pharmacovigilance and Rational use of Chinese Medicine in Beijing University of Chinese Medicine jointly compiled the Instructions for Clinical Application of Chinese Patent Medicines(CPMs). As the interpretation and supplement of drug instruction information, it aims to guide clinical safety and rational use of CPMs. In addition, the technical specification for clinical application description of CPMs has been formulated, which covers the seven processes of "carding instructions, clinical investigation, data retrieval, data screening, evidence classification, path transformation and writing format". It will enable readers of Instructions for Clinical Application of Chinese Patent Medicines to understand the work behind the compilation.


Subject(s)
Beijing , China , Drugs, Chinese Herbal , Medicine, Chinese Traditional , Nonprescription Drugs , Pharmacovigilance
13.
China Journal of Chinese Materia Medica ; (24): 4287-4292, 2021.
Article in Chinese | WPRIM | ID: wpr-888091

ABSTRACT

The formulation of expert consensus on clinical application of Chinese patent medicines, in means of exploring the effective combination of experience and evidence to form a research method in line with the characteristics of Chinese patent medicines, is an important transitional stage for clinical researches on Chinese patent medicines. Pre-searching is a new step in the formulation of expert consensus on clinical application of Chinese patent medicines. Before steps of interview and investigation on clinical application, pre-searching is conducted to collect publications and literature on certain variety and similar Chinese patent medicines; the publications on related medical classics and formulas of this variety; the recommendation condition of this variety in clinical practice guidelines and expert consensus; and the medication regimens recommended in disease-specific guidelines. Pre-searching is designed to know about the advantages of certain variety of Chinese patent medicine as well as its potential problems recorded in the literature, which is helpful to find out the clinical positioning of Chinese patent medicines, develop reasonable clinical questions and provide ideas for formal literature searching. However, it is not the direct basis for developing clinical questions. Moreover, interviews and investigations are still needed to further clarify the clinical positioning of Chinese patent medicines and develop reasonable questions. This paper took expert consensus on clinical application of Yanshen Jianwei Capsules as an example to introduce the pre-searching process and methods used during formulation of expert consensus on clinical application of Chinese patent medicines, and to further discuss the role of pre-searching to facilitate the formulation of clinical questions on selection of participants, interventions, controls and outcomes.


Subject(s)
Humans , Capsules , China , Consensus , Drugs, Chinese Herbal , Medicine, Chinese Traditional , Nonprescription Drugs
14.
Biomedical and Environmental Sciences ; (12): 114-122, 2020.
Article in English | WPRIM | ID: wpr-793015

ABSTRACT

Objective@#To compare the pathogenicity of isolates of sequence type 7 (ST-7) ( ) belonging to four different serogroups (A, B, C, and X).@*Methods@#Four ST-7 isolates serogrouped as A, B, C, and X and characterized by different capsule structures, were examined for their adhesion and invasion properties, and their ability to induce cytokine release and apoptosis in the host cell (the A549 cell line).@*Results@#Among the four ST-7 isolates, the serogroup A isolate possessed the strongest adhesion and invasion ability. This isolate also induced the release of the highest levels of the pro-inflammatory mediators interleukin-6, interleukin-1β, and interferon, and the highest apoptosis rate in the host cells. However, there was no significant difference in interleukin-8 and tumor necrosis factor-α secretion between the four isolates. Based on the findings, the serogroup X isolate had the weakest pathogenicity, whereas there was almost no difference in the pathogenicity of the isolates from serogroups B and C.@*Conclusions@#The differences in the capsular structure of the four isolates of ST-7 affected their pathogenic capacities. The findings also imply that the hyperinvasive ST-7 lineage may include hypoinvasive isolates.

15.
Chinese Journal of Natural Medicines (English Ed.) ; (6): 491-499, 2020.
Article in English | WPRIM | ID: wpr-827220

ABSTRACT

Adriamycin resistance in HCC seriously hinders the treatment of patients, it is necessary to investigate the mechanisms. Autophagy is involved in adriamycin resistance and JNK2 is related to autophagy. However, whether JNK2 inducing drug resistance though autophagy is unknown. GL-V9, a new synthesized flavonoid derivative, has been proved of its anti-tumor effects. The aim of the study is to explore the role of JNK2-related autophagy on adriamycin-induced drug resistance and the effects of GL-V9 on reversing adriamycin resistance. We concluded that JNK2 played an important role in drug resistance induced by adriamycin. The high expression of JNK2 activated protective autophagy in Hep G2-DOXR cells under non-stress condition, which protected cells from drug attacking. Furthermore, we found that GL-V9 reversed adriamycin resistance by blocking the JNK2-related protective autophagy in HCC.

16.
China Journal of Chinese Materia Medica ; (24): 2523-2532, 2020.
Article in Chinese | WPRIM | ID: wpr-828050

ABSTRACT

Polyphenol oxidase(PPO) is an important antioxidant enzyme in plants. It has the functions of scavenging active oxygen and synthesizing phenols, lignin, and plant protection factors, and can enhance the plant's resistance to stress and resistance to pests and diseases. Our previous research found that Salvia miltiorrhiza PPO gene can positively regulate salvianolic acid B synthesis. In order to further explore the mechanism, a pGBKT7-PPO bait vector was constructed using the cloned S. miltiorrhiza polyphenol oxidase gene(SmPPO, GenBank accession number: KF712274.1), and verified that it had no self-activation and no toxicity. The titer of S. miltiorrhiza cDNA library constructed by our laboratory was 4.75 × 107 cfu·mL~(-1), which met the requirements for library construction. Through yeast two-hybrid test, 22 proteins that could interact with SmPPO were screened. Only yeast PAL1 and TAT interacted with SmPPO through yeast co-transformation verification. Further verification was performed by bimolecular fluorescence complementary detection(BiFC). Only TAT and SmPPO interacted, so it meant that TAT and SmPPO interacted. TAT and SmPPO were truncated according to the domain, respectively. The first 126 amino acids of SmPPO and tyrosine amino transferase(TAT) were obtained to interact on the cell membrane and chloroplast. SmPPO was obtained by subcellular localization test, which was mainly loca-lized on the nucleus and cell membrane; TAT was localized on the cell membrane. Real-time quantitative PCR results showed that the SmPPO gene was mainly expressed in roots and stems; the TAT gene was expressed in roots, and the expression level in stems and flowers was low. This article lays a solid foundation for the in-depth study of the molecular mechanism of the interaction of S. miltiorrhiza SmPPO and TAT to regulate the synthesis of phenolic substances.


Subject(s)
Catechol Oxidase , Gene Expression Regulation, Plant , Gene Library , Plant Proteins , Genetics , Plant Roots , Salvia miltiorrhiza , Genetics
17.
China Journal of Chinese Materia Medica ; (24): 2239-2248, 2020.
Article in Chinese | WPRIM | ID: wpr-827957

ABSTRACT

To analyze the development of coronavirus disease 2019(COVID-19), this study systematically retrieved relevant Chinese and English literatures from both CNKI and Web of Science database platforms by bibliometric research method and CiteSpace 5.5.R2 software to obtain information and visualize relevant literatures. A total of 695 Chinese and 446 English literatures were included in this paper. Statistics showed that China had published most of the literatures and established close cooperation with the United States and the United Kingdom. Through the analysis, Tongji Medical College of Huazhong University of Science and Technology and its affiliated hospitals published the largest number of the publications. Moreover, the highly productive journals including Journal of Traditional Chinese Medicine and The Lancet covered eight major fields, such as medicine, medical virology, radiation medicine, infectious disease, and traditional Chinese medicine. Besides, a total of 35 special COVID-19 funds were recently established to subsidize these studies. The key words and themes analysis indicated that protein structure of COVID-19, receptor targets and mechanisms of action, integration of traditional Chinese and Western medicine, screening and development of antiviral drugs from traditional Chinese medicine and Western medicine, vaccine research as well as epidemiological characteristics and prediction are current study hotspots. This study provides a reference for researchers to rapidly master main study directions of COVID-19 and screen out relevant literatures.


Subject(s)
Humans , Betacoronavirus , Bibliometrics , China , Coronavirus Infections , Pandemics , Pneumonia, Viral , United Kingdom , United States
18.
Chinese Journal of Tissue Engineering Research ; (53): 3157-3161, 2020.
Article in Chinese | WPRIM | ID: wpr-847467

ABSTRACT

BACKGROUND: Articular cartilage has a high-weight-bearing area and a low-weight-bearing area. There are different macroscopic elastic moduli in the two regions, but the modulus of the two areas at the micro and nano levels is unknown. Such information is important for further understanding of cartilage micro and nano mechanics. Moreover, the micro and nano structures of the two areas, which influence the cartilage mechanical properties, should be discussed. OBJECTIVE: To investigate the mechanical properties and structure of high- and low-weight-bearing areas of the hip articular cartilage at the micro and nano levels. METHODS: Normal porcine femoral head cartilage was used. Atomic force microscopy with a spherical tip of 5 µm in diameter was used to measure the microscale compressive elastic modulus of different weight-bearing areas of the cartilage. The nanoscale compressive elastic modulus, nano structure, and collagen fiber diameter were measured using a ScanAsyst-Air probe with a radius of curvature of 5 nm. Scanning electron microscopy was employed to identify the microstructure of different weight-bearing areas of the cartilage. RESULTS AND CONCLUSION: The microscale elastic modulus of the high-weight-bearing area of the femoral head cartilage was (433.05±146.52) kPa, and the microscale elastic modulus of the low-weight-bearing area was (331.19±84.88) kPa. The nanoscale elastic modulus of the high- and low-weight-bearing areas of the femoral head cartilage was (1.24±0.42) GPa and (1.28±0.41) GPa, respectively. While no statistically significant differences were found in the elastic modulus of collagen fibers at the nano level (P=0.846 2). The collagen fibers of the high-weight-bearing area arranged more regularly than those of the low-weight-bearing area at the micro level. No significant differences between collagen fiber diameter of the two areas at the nano level were observed (P=0.926 4). To conclude, the collagen fibers of the high-weight-bearing area are cross-linked more regularly than those of low-weight-bearing area. Therefore, the compressive elastic modulus of the high-weight-bearing area at the micro level is significantly higher than that of the low-weight-bearing area, which is consistent with the macroscopic compressive elastic modulus trend. However, high-weight-bearing has no impact on individual collagen fibers at the nano level.

19.
Chinese Journal of Experimental Traditional Medical Formulae ; (24): 20-28, 2020.
Article in Chinese | WPRIM | ID: wpr-873213

ABSTRACT

Objective:To comprehensively analyze the diagnosis and treatment programs and prevention and treatment programs on tratidional Chinese medicine (TCM) for coronavirus disease-2019 (COVID-19), and to provide suggestions for further development of TCM clinical guidelines. Method:Diagnosis and treatment programs on TCM for COVID-19 pneumonia, as well as prevention and treatment programs, clinical practice guidelines and expert consensus, were retrieved till Feb 19, 2020. The information about TCM syndrome differentiation, state of disease, and TCM treatments (decoction and Chinese patent medicines) were extracted and analyzed. Result:A total of 24 TCM programs/guidelines were included containing 23 diagnosis and treatment programs or prevention and treatment programs and one rapid advice guideline. Of the 23 TCM programs, 14 programs described the classification of TCM syndromes and the stages of disease,22 programs described the composition of the TCM decoction; seven programs described how to add and subtract the herbs according to different TCM syndromes,17 programs described the weight/volume of the herbs of TCM decoctions, three programs described the decoction method,six programs described the usage and dosage of TCM decoction, two programs clarified the course of treatment; none of the 23 programs indicated the source of evidence. The TCM treatment within the rapid advice guideline was in reference to the fourth edition of the COVID-19 pneumonia TCM diagnosis and treatment program issued by the National Health Commission. A total of 41 Chinese patent medicines were recommended in 23 programs, of which 12 Chinese patent medicines were off-label recommended. Conclusion:In most TCM programs, TCM decoction and Chinese patent medicines are recommended based on TCM syndrome differentiation in combination with the state of disease, and the dosage of the TCM decoctions are clearly described. Some Chinese patent medicines in the TCM programs are off-label recommended. Expert experience and opinions are valued when developing TCM programs/ guidelines. All of these provide reference for developing TCM programs/guidelines in future.

20.
China Journal of Chinese Materia Medica ; (24): 2644-2651, 2019.
Article in Chinese | WPRIM | ID: wpr-773215

ABSTRACT

In 2018,Standardization Department of China Association of Chinese Medicine invited methodologists with the background of evidence-based medicine to discuss and draft a series of standards for expert consensus on clinical practice of Chinese patent medicines. These standards have been made by reference to the published standards for developing expert consensus and clinical practice guidelines. These standards were made based on full consideration of the current evidence status and the history of clinical practice of Chinese patent medicines. These standards were composed of four parts,namely information summary items,normative general items,normative technical items and information supplementary items,including cover,content,preface,introduction,title,scope,basic Information of Chinese patent medicine,suggestions for clinical application,safety,conflict of interest,appendix,and references,so as to provides reference for improving the quality of expert consensus-based compilation and enhancing the applicability of expert consensus.


Subject(s)
Humans , China , Consensus , Evidence-Based Medicine , Medicine, Chinese Traditional , Reference Standards , Nonprescription Drugs , Reference Standards
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