RESUMO
The elucidation of resources pertaining to the Chimonanthus praecox varieties and the establishment of a fingerprint serve as crucial underpinnings for advancing scientific inquiry and industrial progress in relation to C. praecox. Employing the SSR molecular marker technology, an exploration of the genetic diversity of 175 C. praecox varieties (lines) in the Yanling region was conducted, and an analysis of the genetic diversity among these varieties was carried out using the UPDM clustering method in NTSYSpc 2.1 software. We analyzed the genetic structure of 175 germplasm using Structure v2.3.3 software based on a Bayesian model. General linear model (GLM) association was utilized to analyze traits and markers. The genetic diversity analysis revealed a mean number of alleles (Na) of 6.857, a mean expected heterozygosity (He) of 0.496 3, a mean observed heterozygosity (Ho) of 0.503 7, a mean genetic diversity index of Nei՚s of 0.494 9, and a mean Shannon information index of 0.995 8. These results suggest that the C. praecox population in Yanling exhibits a rich genetic diversity. Additionally, the population structure and the UPDM clustering were examined. In the GLM model, a total of fifteen marker loci exhibited significant (P < 0.05) association with eight phenotypic traits, with the explained phenotypic variation ranging from 14.90% to 36.03%. The construction of fingerprints for C. praecox varieties (lines) was accomplished by utilizing eleven primer pairs with the highest polymorphic information content, resulting in the analysis of 175 SSR markers. The present study offers a thorough examination of the genetic diversity and SSR molecular markers of C. praecox in Yanling, and establishes a fundamental germplasm repository of C. praecox, thereby furnishing theoretical underpinnings for the selection and cultivation of novel and superior C. praecox varieties, varietal identification, and resource preservation and exploitation.
Assuntos
Teorema de Bayes , Biomarcadores , Fenótipo , Análise por Conglomerados , Variação GenéticaRESUMO
OBJECTIVE To evaluate the clinical efficacy and safety of aspirin versus other anticoagulants in the prevention of thromboembolism after orthopedic surgery. METHODS Retrieved from PubMed， Embase， the Cochrane Library， CNKI， Wanfang data and VIP， randomized controlled trials （RCTs） and cohort studies about aspirin （trial group） versus other anticoagulants （control group） were collected during the inception and June 1st， 2023. After literature screening， data extraction and quality evaluation， the meta-analysis was conducted by using RevMan 5.4 software. RESULTS A total of 22 studies were included， involving 9 RCTs and 13 cohort studies. RCT results showed that the incidences of deep vein thrombosis （DVT） [RR＝1.81， 95%CI（1.36， 2.40）， P＜0.000 1] and postoperative pulmonary embolism （PE） [RR＝1.55， 95%CI（1.01， 2.40）， P＝0.05] in trial group were significantly higher than control group. There was no statistically significant difference in the incidences of postoperative massive bleeding， postoperative surgical site infection， all-cause death， or any bleeding after surgery between 2 groups. In the cohort study， the incidence of any bleeding in trial group was significantly lower than control group [RR＝0.71，95%CI （0.64， 0.79）， P＜0.000 1]， while the differences in other indicators were not statistically significant （P＞0.05）. The results of subgroup analysis based on different anticoagulants showed that in RCT， the incidences of DVT and PE after surgery in patients using low-molecular-weight heparin （LMWH） were significantly lower than using aspirin （P＜0.05）； in the cohort study， the incidences of DVT and PE after surgery were significantly lower in patients using direct oral anticoagulants （DOAC） than using aspirin （P＜0.05）. There was no statistically significant difference in the incidence of major bleeding between patients using aspirin and using DOAC and LWMH （P＞0.05） in both RCT and cohort study. CONCLUSIONS Aspirin is equally safe as other anticoagulants for the prevention of thromboembolism after orthopedic surgery， but its efficacy may not be as good as other anticoagulants. After orthopedic surgery， other anticoagulants should be preferred to prevent venous thromboembolism， and aspirin should be carefully considered.
RESUMO
Objective To investigate the difference of the disease progression in patients with chronic obstructive pulmonary disease (COPD) with different muscle mass levels and the influence of related factors on the disease progression. Methods A total of 308 newly diagnosed patients with COPD from February 2021 to February 2022 were selected for this study. All patients were below moderate COPD. The patients were divided into two groups according to their muscle mass levels: sarcopenia group (98 cases) and control group (210 cases). The diagnostic criteria for sarcopenia were based on sarcopenia diagnostic thresholds: RSMI 2 in men and 2 for women. All subjects were followed up for 4 months to observe the progress of the patient's condition. The correlation between the muscle mass level and pulmonary function level, as well as the results of 6-minute walking test and CAT score was evaluated, and the influence of muscle mass level on the patient's disease progress was analyzed. At the same time, the potential influence of related factors (body fat rate, vitamin D level, etc.) on the condition of patients with different muscle mass levels was discussed. SPSS 19.0 software was used to perform statistical analysis. Results Under the same treatment intervention, the baseline and follow-up lung function improvement levels of patients in the sarcopenia group were lower than those in the control group, and the difference was statistically significant (P<0.05). At the same time, the baseline and follow-up 6-minute walk test results of the patients in the sarcopenia group were also worse than those of the control group, and the difference was statistically significant (P<0.05). Further correlation analysis was carried out between the patient's muscle mass level and the post-treatment pulmonary function indicators and 6MWD test level. The results showed that the muscle mass level was positively correlated with several pulmonary function indicators (FEV1, FEV1% predict) and 6MWD (both P<0.05). Considering the possible influence of other factors on the control and progress of the patient's condition, the present study used follow-up CAT score results to distinguish the prognosis of the patient's condition improvement, and used improvement and non-improvement as dependent variables to analyze the influence of various potential influencing factors. The results of regression model analysis showed that lower baseline muscle mass, women, lower body fat percentage, and lower vitamin D level were the main risk factors. Conclusion Under the same treatment condition, COPD patients with different muscle mass levels improve more slowly when complicated with sarcopenia and have poor prognosis. Women, lower body fat percentage and lower vitamin D level are potential risk factors for poor prognosis.
RESUMO
ObjectiveTo explore the scientific connotation of fried charcoal survivability of Lonicerae Japonicae Flos（LJF） by analyzing the correlation between the color change and the intrinsic components during the processing of LJF Carbonisata（LJFC）， and taking pH， charcoal adsorption and microscopic characteristics as indexes. MethodLJFC samples with different degrees of processing were prepared according to the stir-frying time of 0.0， 1.5， 3.0， 4.5， 6.0， 7.5， 9.0， 10.5 min（numbered S1-S8）， and the contents of gallic acid， chlorogenic acid， cryptochlorogenic acid， rutin， luteoloside， isochlorogenic acid A and isochlorogenic acid C were determined by high performance liquid chromatography（HPLC）， and the L*（brightness）， a*（red-greenness） and b*（yellow-blueness） of LJFC samples with different degrees of processing were determined by spectrophotometer， and the correlation analysis and principal component analysis（PCA） between the contents of seven representative components and the color of the samples were carried out by SPSS 26. 0 and SIMCA-P 14.1. Then pH， adsorption force and characteristic structure of different samples of LJFC were detected and the processing pattern of LJFC was analyzed. ResultThe results of quantitative analysis revealed that the contents of luteoloside， rutin， chlorogenic acid and isochlorogenic acid A gradually decreased， and the contents of cryptochlorogenic acid， isochlorogenic acid C and gallic acid firstly increased and then decreased. The L* and b* of the sample powders decreased， and a* showed a trend of increasing and then decreasing. The L* and b* were positively correlated with the contents of chlorogenic acid， rutin， luteoloside， isochlorogenic acid A， b* was positively correlated with the content of gallic acid， and a* was positively correlated with the contents of cryptochlorogenic acid and isochlorogenic acid C. PCA revealed that samples could be clearly divided into 3 groups， S1-S2 as one group， S3-S5 as one group， and S6-S8 as one group， with S3 having the highest score. The results of regression analysis showed that only isochlorogenic acid C could be used to predict the contents of components by colorimetric values combined with regression equations. Physicochemical analysis showed that pH of LJFC increased with the increase of degree of charcoal stir-frying， while adsorption force showed a tendency of increasing and then decreasing， with the highest adsorption force in the S5 sample， and the non-glandular hairs， calcium oxalate clusters and pollen grains had a varying degree of decreasing with the deepening of processing degree， and the microstructures of S6-S8 samples were obviously charred with pollen grains almost invisible. ConclusionThe changes in chemical composition and color characteristics of LJFC during the processing have certain correlations， combined with the changes in physicochemical properties， S5 sample is found to be the optimal processed products， which can provide a reference for the processing standardization and quality evaluation of LJFC， and enrich the scientific connotation of fried charcoal survivability of LJF.
RESUMO
ObjectiveTo investigate the therapeutic effects and difference in the effects of Arisaematis Rhizoma （AR） before and after processing （i.e.， Arisaematis Rhizoma Preparatum， ARP） with Zingiberis Rhizoma Recens-Alumen on allergic asthma in rats and to provide a basis for the theory of processing improving the efficacy. MethodA rat model of allergic asthma was established in 70 SD rats by intraperitoneal injection of ovalbumin （OVA）-aluminum hydroxide. The rats were administrated with the aqueous extracts of AR （1.2， 0.3 g∙kg-1） and ARP （1.2， 0.3 g∙kg-1） aqueous extracts by gavage， and montelukast sodium （0.001 g∙kg-1） was used as the positive drug. The T helper cell type 1/type 2 （Th1/Th2） ratio in the serum and bronchoalveolar lavage fluid （BALF） and percentages of inflammatory cells in BALF were determined. Polymerase chain reaction （PCR） was employed to determine the mRNA level of mucin 5AC （MUC5AC） in the lung tissue. The pathological changes in the lung tissue were observed by hematoxylin-eosin （HE） staining and PAS staining. Immunohistochemical assay was employed to measure the expression of c-Jun amino-terminal kinase （JNK）， extracellular signal regulated protein kinase （ERK）， and p38 mitogen-activated protein kinase （p38 MAPK） in rat lung tissue. Western blot was employed to determine the protein levels of ERK， p-ERK， JNK， p-JNK， p38， p-p38 in the lung tissue. The effects of AR and ARP were compared based on overall desirability. ResultCompared with the blank group， the levels of interleukin-12 （IL-12） and γ interferon （IFN-γ） in serum and BALF of rats in the model group were significantly lower （P<0.05， P<0.01）， and the levels of interleukin-4 （IL-4）， interleukin-5 （IL-5） and interleukin-13 （IL-13） were significantly higher （P<0.05， P<0.01）. Compared with the model group， the serum and BALF contents of IL-12 and IFN-γ in rats in the montelukast sodium group， high-dose AR group and high-dose ARP group were significantly higher （P<0.05， P<0.01）， and the contents of IL-4， IL-5 and IL-13 were significantly lower （P<0.05， P<0.01）， and the serum contents of IFN-γ in rats in the low-dose AR group and low-dose ARP group were in BALF was significantly higher （P<0.05） and IL-4 and IL-13 were significantly lower （P<0.05， P<0.01）， the percentages of macrophages， lymphocytes， neutrophils， and eosinophils were reduced in BALF， and the expression of JNK/ERK/p38 MAPK signaling pathway and MUC5AC protein was inhibited in lung tissues. Overall assessment of the normalized analysis revealed that the ARP group was slightly more potent than the AR group after administration of the same dose. ConclusionAR and ARP can effectively treat allergic asthma by inhibiting JNK/ERK/p38 MAPK signaling pathway， and the effect is better after concoction， which can provide data support for its "concoction efficiency".
RESUMO
There are various etiologies for extrahepatic bile duct stenosis， and pharmacotherapy and endoscopic intervention can achieve a good clinical effect in benign stenosis. Early diagnosis and timely surgical treatment of malignant stenosis may prolong the survival time of patients. However， there are still difficulties in the differential diagnosis of malignant bile duct stenosis. This article reviews the application of serology， radiology， endoscopic techniques， and artificial intelligence in the differential diagnosis of malignant bile duct stenosis， so as to provide strategies and references for formulating clinical diagnosis and treatment regimens.
RESUMO
Objective To understand the awareness rate and willingness of parents of school-age infants and young children in Huangpu District, Shanghai to receive the 13 valent pneumococcal conjugate vaccine (PCV13) and its influencing factors, and to provide basic data for formulating community health education policies. Methods A stratified random sampling method was used to conduct a full coverage questionnaire survey on the PVC13 awareness rate and vaccination willingness of 1030 parents of infants and young children in 10 communities. Results A total of 1000 questionnaire surveys were completed, with an accurate response rate of 97.08%. The awareness rate of PCV13 was 85.50%, and the awareness rate of complications was less than 80%. The PCV13 vaccination rate was 55.60%. 38.74% of the reasons for not being vaccinated were concerned about vaccine side effects, and 32.21% were concerned about vaccine quality. The higher the education level of parents and the per capita annual income of the family, the higher the awareness rate of pneumococcal vaccine knowledge and the willingness to receive vaccination. Parents with registered residence in other places had low willingness to vaccinate PCV13. Conclusion The public has a higher awareness of PCV13 and a higher willingness to receive vaccination. It is necessary to strengthen the scientific popularization of complications of pneumococcal pneumonia and vaccine safety, strengthen vaccine safety supervision and disclosure of regulatory results, and strengthen PCV13 science popularization for parents of infants and young children with registered residence outside the city.
RESUMO
Aim To investigate the effect of benzyl iso-thiocyanate (BITC) on the proliferation of mouse U14 cervical cancer cells and to explore the mechanism of cytotoxicity based on transcriptomic data analysis. Methods The effect of BITC on U14 cell activity was detected by MTT, nuclear morphological changes were observed by Hochest 33258 and fluorescent inverted microscope, cell cycle and apoptosis were determined by flow cytometry, and the transcriptome database of U14 cells before and after BITC (20 μmol · L
RESUMO
@#Objective To prepare recombinant F protein vaccine of respiratory syncytial virus(RSV) and evaluate its immunization effect.Methods Two RSV vaccines based on RSV F protein were prepared:one was a mucosal vaccine with bacterial like particle(BLP)as adjuvant and the other was an injectable vaccine with aluminium hydroxide as adjuvant.Forty female BALB/c mice were randomly divided into four groups:BLP-F,BLP control,AL-F and AL control group,with 10mice in each group.BLP-F and BLP control group were inoculated intranasally,and AL-F and AL control group were inoculated subcutaneously.The mice were immunized once each at day 0,14 and 28,respectively.Two weeks after the last immunization,the titers of serum IgG antibody and IgA antibody in nasal lotion were detected by ELISA,and the titers of neutralizing antibody were detected by plaque test.Results Both vaccines induced high levels of serum binding antibodies and neutralizing antibodies,and the induction capacity of injected vaccine was stronger than that of mucosal vaccine.The injected vaccine induced the increase of IgG in serum,which was about 10 times higher than the mucosal immune response,but could not induce the increase of IgA.However,the mucosal vaccine induced the high level of mucosal IgA,but the serum IgG antibody was relatively low.Conclusion Both vaccines based on RSV F protein are promising candidates,and each vaccine has its own advantages.Follow-up studies will evaluate the feasibility of these two vaccines as immunogens using a combination immunization approach to simultaneously enhance systemic and mucosal immune responses against RSV.
RESUMO
It is the responsibility of a clinical research institution to protect the rights and interests of research subjects. For the full process supervision of clinical research projects, the construction of a Human Research Protection Program (HRPP) which is suitable to the hospital’s situation can gradually improve the ethical review quality, and provide comprehensive protection measures for participants and potential participants throughout the entire clinical research process. Combined with the characteristics of clinical research and ethical review of Traditional Chinese Medicine(TCM), this paper introduced the construction of an HRPP system that highlights TCM characteristics. At the same time, this paper systematically analyzed the division of responsibilities, communication and cooperation of different committees and departments within the HRPP system to ensure the effective operation of the entire HRPP system, improve the quality of TCM clinical research and the protection level of the HRPP system, in order to achieve the goal of promote the healthy, orderly and scientific development of clinical research.
RESUMO
In the training process of medical students in clinical stage,it is very important to strengthen the medical students’ scientific research integrity and ethical awareness and pay attention to the promotion of their scientific research ethics literacy. The traditional training mode is generally through giving lectures in the classroom. In the current COVID-19 prevention and control normalization period,online training mode through network courses,video training,and learning materials sharing has been used to carry out training on scientific research ethics. This online training mode can effectively use students’ scattered time,which makes the training more convenient and students’ participation is higher. Through the questionnaire survey of 350 clinical medical students,this study analyzed the training courses related to scientific ethics that they hope to offer through online training,as well as specific training materials,application software and other issues,in order to enrich the content of online training,update information in a timely manner,and improve the effectiveness of scientific research ethics training.
RESUMO
AIM: To evaluate the binocular visual function in high myopia patients after the implantation of implantable collamer lens(ICL)V4c.METHODS: A total of 35 cases(70 eyes)that received binocular ICL implantation at our hospital from May 2019 to May 2021 were enrolled in this prospective study. Binocular full-range visual acuity, contrast sensitivity, stereopsis, mesopic vision and glare sensitivity, and monocular wavefront and the quality of vision questionnaire were assessed before the surgery and at 1 mo postoperatively.RESULTS: At 1 mo postoperatively, 35 cases(100%)had binocular uncorrected distance visual acuity(UDVA)≤0.00(LogMAR), 16 cases(46%)had binocular UDVA≥preoperative corrected distance visual acuity(CDVA). Binocular UDVA and uncorrected intermediate visual acuity(UIVA,80 cm)were improved compared to preoperative CDVA and distance-corrected intermediate visual acuity(DCIVA,80 cm)(all P<0.05).While there were no differences in the binocular postoperative UIVA(60 cm)and preoperative DCIVA(60 cm),and uncorrected near visual acuity(UNVA,40 cm)and preoperative distance-corrected near visual acuity(DCNVA,40 cm)(all P>0.05). The binocular contrast sensitivity was significantly improved postoperatively(P=0.001), and the postoperative binocular mesopic vision, glare sensitivity(no glare/glare)and binocular stereopsis(5 m/40 cm)had no differences(all P>0.05). The postoperative total higher-order aberration, trefoil aberration, coma and spherical aberration were increased, besides the median of total coma in the right eye with a pupil diameter of 3.0 mm was decreased after surgery. The mean total score of quality of vision questionnaire was significantly increased from 54.87 preoperatively to 80.92 after implantation(P<0.05), with high satisfaction and no obvious visual disturbance in patients.CONCLUSION: Although the monocular high-order aberrations increased in the early stage after ICL V4c binocular implantation in patients with high myopia, the binocular visual function was improved.
RESUMO
Enzymes are widely used in chemical and pharmaceutical industries because of their advantages of high efficiency and specificity. However， the shortcomings of the free enzymes， such as poor stability and difficulty in recycling， limit their application. Therefore， the immobilization and application of enzymes have become one of the research hotspots. The selection of the immobilization carriers is a critical step in the process of enzyme immobilization. Metal-organic frameworks（MOFs）， a kind of porous materials， are formed by the coordination of metal ions or metal clusters with organic ligands. As an emerging immobilization carrier， its advantages such as high porosity， strong stability， and surface modifiability make it ideal for immobilized enzyme carriers. By immobilizing the free enzyme on MOFs， the above mentioned deficiencies of the free enzymes can be effectively solved， which greatly broaden the applicable condition. Ligand fishing is a method to find receptor-specific ligands from complex components， which has the advantages of high efficiency， simple sample pretreatment and high specificity. The MOF-enzyme complex formed by enzyme immobilization can act as a "fishing rod" for ligand fishing， which can screen out the targets from the complex system of components. The complex chemical composition and various active ingredients of traditional Chinese medicine（TCM） make the ligand fishing technology to play a big role in the screening of enzyme inhibitors from TCM. And the screened enzyme inhibitors are expected to be further developed into the lead compounds with good efficacy and low adverse effects， so the immobilized enzymes of MOFs have a wide application in the screening of active ingredients from TCM. Based on this， this paper summarized the methods of immobilized enzymes of MOFs in recent years， analyzed the characteristics， advantages and disadvantages of each method， and summarized the laws of preparation conditions and mechanisms. Meanwhile， the application and future development of immobilized enzymes of MOFs in the field of enzyme inhibitor screening from TCM were also summarized and prospected， with a view to providing a reference for the development of natural ingredients and the modernization of TCM.
RESUMO
OBJECTIVE@#To evaluate the feasibility of non-invasive prenatal testing (NIPT) for the screening of fetal chromosome aneuploidies in twin pregnancies.@*METHODS@#A total of 2 745 women with twin-pregnancies were subjected for NIPT screening. Chromosomal karyotyping and chromosomal microarray analysis (CMA) were carried out on amniotic fluid samples from those with a high risk for fetal chromosome aneuploidies, and the diagnosis and pregnancy outcome were followed up. The sensitivity, specificity, positive predictive value and false positive rate of the NIPT were calculated.@*RESULTS@#Compared with other chromosomal abnormalities, NIPT had a higher efficacy for trisomy 21 and sex chromosomal aneuploidy (SCA) in twin pregnancies (with sensitivity being 100%, 100%, and specificity being 99.93%, 99.9%, respectively). It is difficult to evaluate the efficacy for trisomies 18 and 13 due to the limited data. For chromosome microdeletions and microduplications spanning 15 ~ 21 Mb, NIPT also had a certain detection rate. Compared with women with natural conception, NIPT had a higher detection rate for those with twin pregnancies by assisted reproduction (P < 0.05).@*CONCLUSION@#It is feasible to use NIPT for the detection of chromosome aneuploidies in women with twin pregnancies.
Assuntos
Gravidez , Feminino , Humanos , Gravidez de Gêmeos , Diagnóstico Pré-Natal , Síndrome de Down/genética , Aberrações Cromossômicas , Aneuploidia , Síndrome da Trissomía do Cromossomo 18/genética , TrissomiaRESUMO
Objective:To investigate the effects of long non-coding RNA (lncRNA) RP11-1212A22.4 on the cell viability and invasive ability of esophageal cancer cell lines by targeting miRNA-483-5p (miR-483-5p).Methods:The expression of RP11-1212A22.4 in esophageal cancer tissues was analyzed by using GEPIA online database. Real-time quantitative polymerase chain reaction (qRT-PCR) was used to detect the expression of RP11-1212A22.4 in human esophageal cancer cell lines EC9706, KYSE30, TE-13, Eca109 and normal esophageal epithelial cell line HET-1A. The lowest expression level of EC9706 cell line in RP11-1212A22.4 was divided into RP11-1212A22.4 group (transfected with pcDNA-RP11-1212A22.4 plasmid) and the control group (transfected with pcDNA-NC plasmid). The cell viability of EC9706 cell was analyzed by using methyl thiazolyl tetrazolium (MTT) method, and the invasion ability of EC9706 cell was detected by using Transwell assay. The targeting relationship between RP11-1212A22.4 and miR-483-5p was verified by using StarBase database prediction and dual luciferase reporter assay. The relative expression level of miR-483-5p of EC9706 cell in two groups was detected by using qRT-PCR. Western blot was used to detect the expressions of cyclin-dependent kinase 6 (CDK6), matrix metalloproteinase 2 (MMP-2), cyclin-dependent kinase 4 (CDK4), and matrix metalloproteinase 9 (MMP-9) proteins in two groups.Results:In GEPIA online database, compared with adjacent tissues, the relative expression level of RP11-1212A22.4 in esophageal cancer tissues was decreased, and the difference was statistically significant ( P < 0.001). The relative expression levels of RP11-1212A22.4 in esophageal cancer cell lines EC9706, KYSE30, TE-13, Eca109 and normal esophageal mucosal epithelial cell line HET-1A were 0.11±0.08, 0.32±0.09, 0.72±0.09, 0.59±0.13 and 0.97±0.12, and the difference was statistically significant ( F = 40.42, P < 0.001). The relative expression levels of RP11-1212A22.4 in EC9706 cells of RP11-1212A22.4 group and the control group were 11.9±2.4 and 1.0±0.3, respectively, and the difference was statistically significant ( t = 8.89, P < 0.001). Compared with the control group, the cell viability of EC9706 cell in RP11-1212A22.4 group was decreased (all P < 0.05). The number of invasive cells in RP11-1212A22.4 group was lower than that in the control group (48±12 vs. 106±22, t = 4.63, P < 0.001). StarBase database prediction and dual luciferase reporter assay both showed that RP11-1212A22.4 targeted miR-483-5p. The relative expression level of miR-483-5p in RP11-1212A22.4 group was lower than that in the control group (0.24±0.11 vs. 1.02±0.23, t = 5.98, P = 0.001). Compared with the control group, the expressions of CDK6, MMP-2, CDK4 and MMP-9 proteins in the RP11-1212A22.4 group were decreased. Conclusions:RP11-1212A22.4 is lowly expressed in esophageal cancer tissues and cell lines, and it inhibits the cell viability and invasive ability of esophageal cancer cells by targeting miR-483-5p.
RESUMO
Objective: To investigate the effects of herbal cake-partitioned moxibustion on the plasma levels of trimethylamine (TMA), trimethylamine-N-oxide (TMAO), and flavin-containing monooxygenase 3 (FMO3) in rabbits with atherosclerosis (AS), as well as to explore the possible mechanism of herbal cake-partitioned moxibustion in treating AS. Methods: After 1-week adaptive feeding, 28 male New Zealand rabbits were divided into a blank group, a model group, an antibiotic group, and a herbal cake-partitioned moxibustion group according to the random number table method, with 7 rabbits in each group. Rabbits were fed with a basic diet in the blank group, while with a basic diet plus 1％ choline in the remaining groups to prepare the AS model. Rabbits were given drinking water with broad-spectrum antibiotics in the antibiotic group, and herbal cake-partitioned moxibustion in the herbal cake-partitioned moxibustion group for 12 weeks. The atherosclerotic plaques by hematoxylin-eosin (HE) staining, the blood lipid levels, the plasma TMA and TMAO levels by liquid chromatography-mass spectrometry were detected for rabbits in each group at the end of interventions. Liver FMO3 protein expression was detected by Western blotting. Liver FMO3 mRNA expression was detected by real-time fluorescence quantitative polymerase chain reaction. Results: HE staining showed that the arterial wall was rough, the intima was significantly thickened, and more foam cells and lipid deposits were seen in rabbits of the model group. Arterial wall thickening was not obvious with a few foam cells and lipid deposits in the herbal cake-partitioned moxibustion group. Compared with the blank group, the serum levels of low-density lipoprotein cholesterol (LDL-C) and total cholesterol (TC) were increased (P<0.01), the plasma levels of TMA and TMAO were increased (P<0.05, P<0.01), and the expression levels of liver FMO3 protein and mRNA were all increased (P<0.05, P<0.01); while the serum high-density lipoprotein cholesterol (HDL-C) level was decreased in the model group (P<0.05). Compared with the model group, the LDL-C and TC levels were decreased (P<0.01 or P<0.05), the HDL-C levels were increased (P<0.01), the TMA and TMAO levels were decreased (P<0.05), while the protein and mRNA expression levels of FMO3 were decreased without statistical significance in the herbal cake-partitioned moxibustion group and the antibiotic group. Conclusion: Herbal cake-partitioned moxibustion can slow atherosclerotic plaque formation and regulate lipid levels in AS rabbits, and the mechanism may be related to the down-regulation of TMA and TMAO expression in the plasma.
RESUMO
Objective:To investigate the diagnostic accuracy of serological indicators and evaluate the diagnostic value of a new established combined serological model on identifying the minimal hepatic encephalopathy (MHE) in patients with compensated cirrhosis.Methods:This prospective multicenter study enrolled 263 compensated cirrhotic patients from 23 hospitals in 15 provinces, autonomous regions and municipalities of China between October 2021 and August 2022. Clinical data and laboratory test results were collected, and the model for end-stage liver disease (MELD) score was calculated. Ammonia level was corrected to the upper limit of normal (AMM-ULN) by the baseline blood ammonia measurements/upper limit of the normal reference value. MHE was diagnosed by combined abnormal number connection test-A and abnormal digit symbol test as suggested by Guidelines on the management of hepatic encephalopathy in cirrhosis. The patients were randomly divided (7∶3) into training set ( n=185) and validation set ( n=78) based on caret package of R language. Logistic regression was used to establish a combined model of MHE diagnosis. The diagnostic performance was evaluated by the area under the curve (AUC) of receiver operating characteristic curve, Hosmer-Lemeshow test and calibration curve. The internal verification was carried out by the Bootstrap method ( n=200). AUC comparisons were achieved using the Delong test. Results:In the training set, prevalence of MHE was 37.8% (70/185). There were statistically significant differences in AMM-ULN, albumin, platelet, alkaline phosphatase, international normalized ratio, MELD score and education between non-MHE group and MHE group (all P<0.05). Multivariate Logistic regression analysis showed that AMM-ULN [odds ratio ( OR)=1.78, 95% confidence interval ( CI) 1.05-3.14, P=0.038] and MELD score ( OR=1.11, 95% CI 1.04-1.20, P=0.002) were independent risk factors for MHE, and the AUC for predicting MHE were 0.663, 0.625, respectively. Compared with the use of blood AMM-ULN and MELD score alone, the AUC of the combined model of AMM-ULN, MELD score and education exhibited better predictive performance in determining the presence of MHE was 0.755, the specificity and sensitivity was 85.2% and 55.7%, respectively. Hosmer-Lemeshow test and calibration curve showed that the model had good calibration ( P=0.733). The AUC for internal validation of the combined model for diagnosing MHE was 0.752. In the validation set, the AUC of the combined model for diagnosing MHE was 0.794, and Hosmer-Lemeshow test showed good calibration ( P=0.841). Conclusion:Use of the combined model including AMM-ULN, MELD score and education could improve the predictive efficiency of MHE among patients with compensated cirrhosis.
RESUMO
Objective:To observe the clinical characteristics and optical coherence tomography (OCT) features of pseudopapilledema (PPE) combined with peripapillary hyper-reflective ovoid mass-like structures (PHOMS) in children.Methods:A retrospective observational study. From October 2019 to May 2021, total 22 eyes from 12 children diagnosed as PPE combined with PHOMS in the Neuro-ophthalmology Department of The First Hospital of Xi’an (Affiliated of The First Hospital of Northwest University) were recruited. Among the children, 6 were male and 6 were female. The average age was (10.6±2.7) years. The average course from disease onset to diagnosis of PPE combined with PHOMS was (8.0±7.5) months. All patients underwent best corrected visual acuity (BCVA), relative afferent papillary defect (RAPD), Ishihara's test, fundus photography, OCT, fundus autofluorescence (FAF), ocular B-mode ultrasound, visual field and patternvisual evoked potential (P-VEP). The clinical and OCT characteristics of the patients were observed.Results:The anterior segments of the patients were normal. The intraocular pressures and Ishihara's test were all normal. All RAPD were negative. Total 22 eyes, BCVA was 1.0 in 21 eyes and one eye was 0.12. The fundus photography revealed blurred optic discs margin, showing mild to moderate edema-like elevation with more prominent in the nasal parts, presenting as a "C" shape halo. No obvious abnormal fluorescence was observed in FAF. The OCT scan of involvement eyes showed an elevated appearance in vary degrees, and the sharply marginated ovoid hyper-reflective mass-like structures which laterally herniated into the peripapillary region under retinal nerve fiber layer and above the Bruch membrane were detected with consecutive nasal enlargement scanning, corresponding to the nasal parts in the fundus photography. The higher degree of elevation, the larger the volume. Macular retina pigment epithelium layer and ganglion cell thickness were normal. Ocular B-mode ultrasound showed that the head of the optic nerve in the posterior wall of the eyeball (in front of the optic disc) was elevated in all affected eyes, and there was no strong signal echo in it. Visual field examination showed physical blind spot enlargement in 3 eyes and visual field defect in 2 eyes. P-VEP examination showed that the peak was slightly delayed in 3 eyes and the amplitude was slightly reduced in 3 eyes.Conclusions:Enlarged nasal optic disc OCT scan can improve the detection rate of PHOMS. PHOMS were detected bilaterally in the cases with binocular PPE while only in the effected eye in the cases of monocular PPE; the higher degree of PPE, the lager volume of PHOMS. PHOMS were could contribute to the diagnosis of PPE in children.
RESUMO
Objective:To investigate the relationship between age-adjusted Charlson comorbidity index (aCCI) and ischemic stroke in patients with ophthalmic artery occlusion (OAO) or retinal artery occlusion (RAO).Methods:A single center retrospective cohort study. Seventy-four patients with OAO or RAO diagnosed by ophthalmology examination in Shenzhen Second People's Hospital from June 2004 to December 2020 were included in the study. The baseline information of patients were collected and aCCI was used to score the patients' comorbidity. The outcome was ischemic stroke. The median duration of follow-up was 1 796.5 days. According to the maximum likelihood ratio of the two-piecewise COX regression model and the recursive algorithm, the aCCI inflection point value was determined to be 6, and the patients were divided into low aCCI group (<6 points) and high aCCI group (≥6 points). A Cox regression model was used to quantify the association between baseline aCCI and ischemic stroke.Results:Among the 74 patients, 53 were males and 21 were females, with the mean age of (55.22±14.18) (19-84) years. There were 9 patients of OAO and 65 patients of RAO. The aCCI value ranges from 1 to 10 points, with a median of 3 points. There were 63 patients (85.14%, 63/74) in the low aCCI group and 11 patients (14.86%, 11/74) in the high aCCI group. Since 2 patients could not determine the time from baseline to the occurrence of outcome events, 72 patients were included for Cox regression analysis. The results showed that 16 patients (22.22%, 16/72) had ischemic stroke in the future. The baseline aCCI in the low aCCI group was significantly associated with ischemic stroke [hazard ratio ( HR)=1.76, 95% confidence interval ( CI) 1.21-2.56, P=0.003], and for every 1 point increase in baseline aCCI, the risk of future ischemic stroke increased by 76% on average. The baseline aCCI in the high aCCI group had no significant correlation with the ischemic stroke ( HR=0.66, 95% CI 0.33-1.33, P=0.247). Conclusions:aCCI score is an important prognostic information for patients with OAO or RAO. A higher baseline aCCI score predicts a higher risk of ischemic stroke, and the association has a saturation effect.
RESUMO
Objective:To evaluate the status of T, B and NK lymphocytes in peripheral blood of patients with chronic hepatitis B virus(HBV) infection and low-level viremia after nucleos(t)ide analogue (NA) treatment and to provide ideas for solving low-level viremia.Methods:This retrospective study involved 344 patients with chronic HBV infection who had been treated with NAs. They were divided into two groups: low-level viremia group (LLV group) and complete virological response group (CVR group). Clinical data including basic information, biochemistry and coagulation test results, HBV DNA, peripheral blood lymphocyte counts, PD1 and CD28 expression by T lymphocytes, and perforin and granzyme B expression by NK lymphocytes were collected and compared between the two groups. Propensity matching analysis was performed to verify the accuracy of the results.Results:Among the 344 cases, 162 were in the LLV group and 182 in the CVR group. There were no significant differences in disease diagnosis, alanine aminotransferase (ALT), aspartate aminotransferase (AST) or albumin (ALB) level between the two groups ( P>0.05), but the differences in gender and age were statistically significant ( P<0.05). The differences in the counts and percentages of peripheral blood CD3 +, CD4 + and CD8 + T lymphocyte and CD4 + /CD8 + ratios between the two groups were not statistically significant ( P>0.05), but the expression of PD1 and CD28 by peripheral blood CD3 +, CD4 + and CD8 + T lymphocytes was higher in the LLV group than in the CVR group ( P<0.05). The count of peripheral blood CD19 + B lymphocytes in the LLV group was higher than that in the CVR group ( P>0.05), and the percentage of peripheral blood CD19 + B lymphocytes was also higher in the LLV group ( P<0.05). The count of peripheral blood CD16 + CD56 + NK lymphocytes and the expression of perforin in the LLV group were lower than those in the CVR group ( P>0.05). The percentage of peripheral blood CD16 + CD56 + NK lymphocytes and the expression of granzyme B in the LLV group were lower than those in the CVR group ( P<0.05). After propensity score matching, 108 cases in the LLV group and 108 cases in the CVR group showed no significant differences in basic information ( P>0.05); the percentage of CD4 + T lymphocytes and CD4 + /CD8 + ratio in peripheral blood T lymphocyte subsets were higher in the LLV group than in the CVR group, while the percentage of CD8 + lymphocytes was lower in the LLV group ( P<0.05); the expression of PD1 and CD28 by CD3 +, CD4 + and CD8 + T lymphocytes remained higher in the LLV group ( P<0.05); the differences in the counts and percentages of peripheral blood CD19 + B lymphocytes as well as CD16 + CD56 + NK lymphocytes between the two groups were not statistically significant ( P>0.05); no significant difference in the expression of perforin by CD16 + CD56 + NK lymphocytes was found between the two groups ( P>0.05), and the expression of granzyme B remained lower in the LLV group ( P<0.05). Conclusions:Abnormal number and function of T lymphocytes and decreased function of NK lymphocytes might be related to the development of LLV in patients with chronic HBV infection after treatment. Therefore, in addition to adjusting NAs, targeting of T and NK lymphocytes might also be a feasible measure for future LLV treatment.