LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 156

Search options

  1. Article: Establishment and application of a TaqMan-based multiplex real-time PCR for simultaneous detection of three porcine diarrhea viruses.

    Ren, Jing / Zu, Congcong / Li, Yang / Li, Meng / Gu, Jinyuan / Chen, Fengling / Li, Xiaowen

    Frontiers in microbiology

    2024  Volume 15, Page(s) 1380849

    Abstract: Introduction: Porcine viral diarrhea is a common clinical disease, which results in high mortality and economic losses in the pig industry. Porcine epidemic diarrhea virus (PEDV), porcine rotavirus (PoRV), and porcine deltacoronavirus (PDCoV) are ... ...

    Abstract Introduction: Porcine viral diarrhea is a common clinical disease, which results in high mortality and economic losses in the pig industry. Porcine epidemic diarrhea virus (PEDV), porcine rotavirus (PoRV), and porcine deltacoronavirus (PDCoV) are important diarrhea viruses in pig herds. The similarities of their clinical symptoms and pathological changes make it difficult to distinguish these three viruses clinically. Therefore, there is a need for a highly sensitive and specific method to simultaneously detect and differentiate these viruses.
    Methods: A multiplex real-time PCR assay using TaqMan probes was developed to simultaneously detect PEDV, PoRV, and PDCoV. To assess the efficacy of the established assay, 30 clinical samples with diarrhea symptoms were used to compare the results obtained from the multiplex real-time PCR assay with those obtained from commercial singleplex real-time PCR kit. Importantly, a total of 4,800 diarrhea samples were tested and analyzed to validate the utility of the assay.
    Results: This multiplex real-time PCR assay showed high sensitivity, specificity, and excellent repeatability with a detection limit of 1 × 10
    Discussion: The multiplex real-time PCR method established in this study is a valuable diagnostic tool for simultaneously differentiating PEDV, PoRV, and PDCoV. This method is expected to significantly contribute to prevent and control the spread of infectious diseases, as well as aid in conducting epidemiological investigations.
    Language English
    Publishing date 2024-04-16
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2587354-4
    ISSN 1664-302X
    ISSN 1664-302X
    DOI 10.3389/fmicb.2024.1380849
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  2. Article ; Online: CAR-T cells for cancer immunotherapy-the barriers ahead and the paths through.

    Zhang, Qiqi / Zu, Cheng / Hu, Yongxian / Huang, He

    International reviews of immunology

    2022  Volume 41, Issue 6, Page(s) 567–581

    Abstract: This review discusses the major concerns and changes emerged during the rapidly extended clinical application of chimeric antigen receptor (CAR) T therapy based on our experience and understanding. In the past decades, the CAR-T cells have been ... ...

    Abstract This review discusses the major concerns and changes emerged during the rapidly extended clinical application of chimeric antigen receptor (CAR) T therapy based on our experience and understanding. In the past decades, the CAR-T cells have been questioned, sequentially, about their capability of inducing initial remission, their safety profile, their ability to sustain long-term persistence and response, and their potential to be industrialized. Significant advances, novel targeting strategies, innovative molecular structure, fine tuning of both CAR-T and host immune system, combination with other therapies, streamlined manufacturing, and etc., have been made to overcome these challenges. Although not perfectly resolved, rational pathways have been proposed to pass through the barriers. Here, we present the recent achievements on these pathways, and look into the possible future directions.
    MeSH term(s) Humans ; Receptors, Chimeric Antigen/genetics ; Receptors, Antigen, T-Cell ; Immunotherapy, Adoptive ; Immunotherapy ; T-Lymphocytes ; Neoplasms
    Chemical Substances Receptors, Chimeric Antigen ; Receptors, Antigen, T-Cell
    Language English
    Publishing date 2022-05-28
    Publishing country England
    Document type Review ; Journal Article
    ZDB-ID 632825-8
    ISSN 1563-5244 ; 1545-5858 ; 0883-0185
    ISSN (online) 1563-5244 ; 1545-5858
    ISSN 0883-0185
    DOI 10.1080/08830185.2022.2080820
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article: Clinical features of hemophagocytic syndrome following BCMA CAR-T cell therapy in patients with relapsed/refractory multiple myeloma.

    Zu, Cheng / Wang, Kexin / Zhang, Qiqi / Hu, Yongxian / Huang, He

    Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences

    2022  Volume 51, Issue 2, Page(s) 160–166

    Abstract: Objective: To analyze the clinical features of hemophagocytic syndrome (HLH) following B cell maturation antigen (BCMA) chimeric antigen receptor (CAR) T cell therapy in patients with relapsed/refractory multiple myeloma.: Methods: Ninety-nine ... ...

    Abstract Objective: To analyze the clinical features of hemophagocytic syndrome (HLH) following B cell maturation antigen (BCMA) chimeric antigen receptor (CAR) T cell therapy in patients with relapsed/refractory multiple myeloma.
    Methods: Ninety-nine patients with relapsed/refractory multiple myeloma (including 3 cases of plasma cell leukemia) undergoing BCMA CAR-T cell therapy (monocentric phaseⅠclinical trial, ChiCTR1800017404) in the First Affiliated Hospital, Zhejiang University School of Medicine from July 2018 to December 2021 were enrolled in the study. The baseline features, laboratory findings, treatment, and clinical response of these patients were analyzed.
    Results: CAR-T cell associated HLH (carHLH) occurred in 20 patients (20.20%), and the median onset time was 7(0-19) d after cytokine release syndrome (CRS). Patients with carHLH were maily male patients, and manifested as high percentage of abnormal plasma cells, higher incidence of severe CRS (grade 3-4), and robust expansion of CAR-T cells in the peripheral blood (all
    Conclusions: The incidence of carHLH is relatively high in BCMA CAR-T cell treated patients, which is closely related to pretreatment tumor cell percentage in bone marrow, expansion of CAR-T cells and the secretion of cytokines. Medication based on tocilizumab and steroids can achieve considerable therapeutic effects in patient with carHLH.
    MeSH term(s) B-Cell Maturation Antigen/therapeutic use ; Cell- and Tissue-Based Therapy ; Cytokines ; Fibrinogen/therapeutic use ; Humans ; Interferons/therapeutic use ; Interleukin-10/therapeutic use ; Lymphohistiocytosis, Hemophagocytic/etiology ; Lymphohistiocytosis, Hemophagocytic/therapy ; Male ; Multiple Myeloma/therapy ; Receptors, Chimeric Antigen/therapeutic use
    Chemical Substances B-Cell Maturation Antigen ; Cytokines ; Receptors, Chimeric Antigen ; Interleukin-10 (130068-27-8) ; Fibrinogen (9001-32-5) ; Interferons (9008-11-1)
    Language English
    Publishing date 2022-09-21
    Publishing country China
    Document type Journal Article
    ISSN 1008-9292
    ISSN 1008-9292
    DOI 10.3724/zdxbyxb-2022-0039
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article ; Online: Facial Expression Recognition with Contrastive Learning and Uncertainty-Guided Relabeling.

    Yang, Yujie / Hu, Lin / Zu, Chen / Zhou, Qizheng / Wu, Xi / Zhou, Jiliu / Wang, Yan

    International journal of neural systems

    2023  Volume 33, Issue 6, Page(s) 2350032

    Abstract: Facial expression recognition (FER) plays a vital role in the field of human-computer interaction. To achieve automatic FER, various approaches based on deep learning (DL) have been presented. However, most of them lack for the extraction of ... ...

    Abstract Facial expression recognition (FER) plays a vital role in the field of human-computer interaction. To achieve automatic FER, various approaches based on deep learning (DL) have been presented. However, most of them lack for the extraction of discriminative expression semantic information and suffer from the problem of annotation ambiguity. In this paper, we propose an elaborately designed end-to-end recognition network with contrastive learning and uncertainty-guided relabeling, to recognize facial expressions efficiently and accurately, as well as to alleviate the impact of annotation ambiguity. Specifically, a supervised contrastive loss (SCL) is introduced to promote inter-class separability and intra-class compactness, thus helping the network extract fine-grained discriminative expression features. As for the annotation ambiguity problem, we present an uncertainty estimation-based relabeling module (UERM) to estimate the uncertainty of each sample and relabel the unreliable ones. In addition, to deal with the padding erosion problem, we embed an amending representation module (ARM) into the recognition network. Experimental results on three public benchmarks demonstrate that our proposed method facilitates the recognition performance remarkably with 90.91% on RAF-DB, 88.59% on FERPlus and 61.00% on AffectNet, outperforming current state-of-the-art (SOTA) FER methods. Code will be available at http//github.com/xiaohu-run/fer_supCon.
    MeSH term(s) Humans ; Facial Recognition ; Uncertainty ; Facial Expression
    Language English
    Publishing date 2023-05-16
    Publishing country Singapore
    Document type Journal Article
    ISSN 1793-6462
    ISSN (online) 1793-6462
    DOI 10.1142/S0129065723500326
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  5. Article ; Online: Identification of a circRNA-mediated comprehensive ceRNA network in spinal cord injury pathogenesis.

    Zu, Chao / Li, Jingyuan / He, Xijing / Ji, Le / Li, Xia

    Experimental biology and medicine (Maywood, N.J.)

    2022  Volume 247, Issue 11, Page(s) 931–944

    Abstract: RNAs are closely associated with human diseases; however, immune-related genes (IRGs) and their potential regulatory networks in relation to spinal cord injury (SCI) are still poorly understood. Here, we investigated the key IRGs as well as the competing ...

    Abstract RNAs are closely associated with human diseases; however, immune-related genes (IRGs) and their potential regulatory networks in relation to spinal cord injury (SCI) are still poorly understood. Here, we investigated the key IRGs as well as the competing endogenous RNA (ceRNA) mechanisms that are associated with SCI pathogenesis based on microarray datasets and the use of a rat SCI model. Specifically, four independent SCI microarray datasets from Gene Expression Omnibus (GEO) database were analyzed and, thereafter, differentially expressed IRGs were annotated via Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses. Furthermore, based on the GEO datasets, differentially expressed RNAs (DERNAs), including DEcircRNAs, DEmiRNAs, and DEmRNAs were identified and interactions between them were also predicted using online databases, and to construct a circular RNA (circRNA) mediated ceRNA network, candidate RNAs were also identified. Furthermore, the support vector machine (SVM) and least absolute shrinkage and selection operator (LASSO) methods were used for the identification of critical DERNAs, while differential gene expression was validated using the GSE20907 dataset. Our results were as follows. In the SCI microarray datasets, 32, 58, and 74 DEIRGs, DEcircRNAs, and DEmiRNAs were identified, respectively. In addition, GO and KEGG analyses showed that the DEIRGs were primarily enriched in neutrophil-mediated immunity and nuclear factor-kappa B (NF-κB) and hypoxia-inducible factor-1 (HIF-1) signaling pathways, and based on LASSO and SVM screening,
    MeSH term(s) Animals ; Gene Ontology ; MicroRNAs/genetics ; MicroRNAs/metabolism ; RNA, Circular/genetics ; RNA, Messenger/genetics ; Rats ; Spinal Cord Injuries/genetics
    Chemical Substances MicroRNAs ; RNA, Circular ; RNA, Messenger
    Language English
    Publishing date 2022-04-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 4015-0
    ISSN 1535-3699 ; 1525-1373 ; 0037-9727
    ISSN (online) 1535-3699 ; 1525-1373
    ISSN 0037-9727
    DOI 10.1177/15353702221082929
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article: Cardiovascular Health Index Scores and Pregnancy-Induced Hypertension: An Association Study.

    Cui, Kai / Huo, Hongqiu / He, Honghong / Liu, Chunlu / Zu, Changhao / Wu, Yuntao / Zhao, Haiyan

    Alternative therapies in health and medicine

    2023  Volume 29, Issue 5, Page(s) 141–145

    Abstract: Objective: This cohort study investigated the association between cardiovascular health index scores and pregnancy-induced hypertension (PIH).: Methods: A total of 1466 first-time pregnant women who delivered a single child between 2006 and 2016 were ...

    Abstract Objective: This cohort study investigated the association between cardiovascular health index scores and pregnancy-induced hypertension (PIH).
    Methods: A total of 1466 first-time pregnant women who delivered a single child between 2006 and 2016 were included in the study. All participants underwent a physical examination before delivery, and seven cardiovascular health indexes were collected and scored. Three groups were created based on the tri-sectional quantiles of the total score to observe whether PIH occurred among the groups. A dichotomous logistic regression analysis was carried out to investigate the relationship between cardiovascular health index scores and the occurrence of PIH.
    Results: During the observation of 1150 subjects, 103 cases of PIH were identified, resulting in an incidence rate of 8.96%. The study found that the incidence of PIH in the three groups was 17.5% in the first group, 6.7% in the second, and 5.8% in the third group. These rates showed a sequential decrease with statistically significant differences (P < .001). The multifactorial regression analysis revealed that after adjusting for various factors, there was a significant inverse relationship between cardiovascular health index scores and the risk of PIH. Specifically, for every one-point increase in the seven cardiovascular health index scores, the risk of PIH decreased by 29% (OR = 0.71, 95% CI 0.59-0.86).
    Conclusions: The study found an inverse correlation between cardiovascular health index scores and PIH, with higher scores associated with lower incidences of PIH. Each cardiovascular health indicator helps to lower the risk of PIH, and optimum cardiovascular health behaviors and variables are protective factors against PIH.
    MeSH term(s) Child ; Pregnancy ; Female ; Humans ; Hypertension, Pregnancy-Induced/epidemiology ; Cohort Studies ; Risk Factors ; Hypertension
    Language English
    Publishing date 2023-05-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1225073-9
    ISSN 1078-6791
    ISSN 1078-6791
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Influences of tobacco straw return with lime on microbial community structure of tobacco-planting soil and tobacco leaf quality.

    Jiang, Chaoqiang / Zu, Chaolong / Riaz, Muhammad / Li, Chen / Zhu, Qifa / Xia, Hao / Dong, Qing / Shen, Jia

    Environmental science and pollution research international

    2024  Volume 31, Issue 21, Page(s) 30959–30971

    Abstract: Soil amendment is an important strategy for improving soil quality and crop yield. From 2014 to 2019, we conducted a study to investigate the effects of tobacco straw return with lime on soil nutrients, soil microbial community structure, tobacco leaf ... ...

    Abstract Soil amendment is an important strategy for improving soil quality and crop yield. From 2014 to 2019, we conducted a study to investigate the effects of tobacco straw return with lime on soil nutrients, soil microbial community structure, tobacco leaf yield, and quality in southern Anhui, China. A field experiment was conducted with four treatments: straw removed (CK), straw return (St), straw return with dolomite (St + D), and straw return with lime (St + L). Results showed that after 5 years of application, the St + L significantly increased the soil pH by 16.9%, and the contents of soil alkaline nitrogen (N) and available potassium (K) by 17.2% and 23.0%, respectively, compared with the CK. Moreover, the St + L significantly increased tobacco leaf yield (24.0%) and the appearance (9.1%) and sensory (5.9%) quality of flue-cured tobacco leaves. The addition of soil conditioners (straw, dolomite, and lime) increased both the total reads and effective sequences of soil microorganisms. Bacterial diversity was more sensitive to changes in the external environment compared to soil fungi. The application of soil amendments (lime and straw) promoted the growth of beneficial microorganisms in the soil. Additionally, bacterial species had greater competition and limited availability of resources for survival compared to fungi. The results showed that soil microorganisms were significantly influenced by the presence of AK, AN, and pH contents. These findings can provide an effective method for improving the quality of flue-cured tobacco leaves and guiding the amelioration of acidic soil in regions where tobacco-rice rotation is practiced.
    MeSH term(s) Nicotiana ; Soil Microbiology ; Soil/chemistry ; Plant Leaves ; Calcium Compounds/pharmacology ; Calcium Compounds/chemistry ; Oxides ; Microbiota/drug effects ; Agriculture/methods ; China
    Language English
    Publishing date 2024-04-15
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1178791-0
    ISSN 1614-7499 ; 0944-1344
    ISSN (online) 1614-7499
    ISSN 0944-1344
    DOI 10.1007/s11356-024-33241-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article: Investigation of fragmentation pathways of protonated 2‐methoxypyrimidine derivatives

    Zu, Chengli / Wang, Nick X. / Brown, Christopher J. / Yang, Qiang / Gilbert, Jeffrey R.

    Journal of mass spectrometry. 2022 Sept., v. 57, no. 9

    2022  

    Abstract: Several representative pyrimidine derivatives were selected to undergo electrospray ionization (ESI) followed by collision‐induced dissociation tandem mass spectrometry (CID MS/MS) experiments. Two competitive pathways were found to govern the formation ... ...

    Abstract Several representative pyrimidine derivatives were selected to undergo electrospray ionization (ESI) followed by collision‐induced dissociation tandem mass spectrometry (CID MS/MS) experiments. Two competitive pathways were found to govern the formation of major fragment ions from protonated species of these molecules. The pathways were largely affected by the 2‐O‐methyl group but not significantly influenced by the substitution on C‐5 site of the pyrimidine ring. These findings were supported by both deuterium labeling CID MS/MS experiments and theoretical calculations. The deuterium labeled pyrimidine ion molecules were generated in‐source in ESI from the fully deuterated hydrazinyl pyrimidines, which were readily obtained through hydrogen/deuterium (H/D) exchange when dissolved in deuterium oxide (D₂O).
    Keywords deuterium ; deuterium oxide ; dissociation ; electrospray ionization mass spectrometry ; pyrimidines ; tandem mass spectrometry
    Language English
    Dates of publication 2022-09
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note LETTER
    ZDB-ID 1221763-3
    ISSN 1096-9888 ; 1076-5174
    ISSN (online) 1096-9888
    ISSN 1076-5174
    DOI 10.1002/jms.4883
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  9. Article ; Online: Identification of vicinal diols using a diagnostic ion derived from the electron ionization of orthoester functional groups.

    Samame, Renzo Alexander / Zu, Chengli / Knueppel, Daniel

    Rapid communications in mass spectrometry : RCM

    2020  Volume 34, Issue 17, Page(s) e8842

    Language English
    Publishing date 2020-06-22
    Publishing country England
    Document type Letter
    ZDB-ID 58731-x
    ISSN 1097-0231 ; 0951-4198
    ISSN (online) 1097-0231
    ISSN 0951-4198
    DOI 10.1002/rcm.8842
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Merging Photoredox Catalysis with Transition Metal Catalysis: Direct C4-H Sulfamidation of 1-Naphthylamine Derivatives.

    Pei, Mengxue / Zu, Conghui / Liu, Zhen / Yang, Fan / Wu, Yangjie

    The Journal of organic chemistry

    2021  Volume 86, Issue 17, Page(s) 11324–11332

    Abstract: A mild and efficient protocol for the copper(I)-catalyzed C4-H sulfamidation of 1-naphthylamine derivatives with diphenylsulfonimide (NHSI) was explored at room temperature, affording the desire produces in moderate to good yields. The control ... ...

    Abstract A mild and efficient protocol for the copper(I)-catalyzed C4-H sulfamidation of 1-naphthylamine derivatives with diphenylsulfonimide (NHSI) was explored at room temperature, affording the desire produces in moderate to good yields. The control experiments indicated that this visible-light-promoted reaction might proceed via a single-electron-transfer process. In addition, preliminary DFT studies for the intermediates in the catalytic cycle were also explored, indicating that the C4 site in the naphthyl ring is the most likely electrophilic reactive site and providing some exact basis for the plausible mechanism.
    MeSH term(s) 1-Naphthylamine ; Catalysis ; Copper ; Light ; Molecular Structure
    Chemical Substances Copper (789U1901C5) ; 1-Naphthylamine (9753I242R5)
    Language English
    Publishing date 2021-08-13
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c00635
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

To top