LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 22

Search options

  1. Article ; Online: The Wiener Index of Circulant Graphs

    Houqing Zhou

    Journal of Chemistry, Vol

    2014  Volume 2014

    Keywords Chemistry ; QD1-999 ; Science ; Q
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher Hindawi Publishing Corporation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  2. Article ; Online: The Wiener Index of Circulant Graphs

    Houqing Zhou

    Journal of Chemistry, Vol

    2014  Volume 2014

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  3. Article ; Online: The Wiener Index of Circulant Graphs

    Houqing Zhou

    Journal of Chemistry, Vol

    2014  Volume 2014

    Abstract: Circulant graphs are an important class of interconnection networks in parallel and distributed computing. In this paper, we discuss the relation of the Wiener index and the Harary index of circulant graphs and the largest eigenvalues of distance matrix ... ...

    Abstract Circulant graphs are an important class of interconnection networks in parallel and distributed computing. In this paper, we discuss the relation of the Wiener index and the Harary index of circulant graphs and the largest eigenvalues of distance matrix and reciprocal distance matrix of circulants. We obtain the following consequence: W/λ=H/μ; 2W/n=λ; 2H/n=μ, where W, H denote the Wiener index and the Harary index and λ, μ denote the largest eigenvalues of distance matrix and reciprocal distance matrix of circulant graphs, respectively. Moreover we also discuss the Wiener index of nonregular graphs with cut edges.
    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2014-01-01T00:00:00Z
    Publisher Hindawi Publishing Corporation
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

  4. Article: LncRNA H19 Regulates Proliferation, Apoptosis and ECM Degradation of Aortic Smooth Muscle Cells Via miR-1-3p/ADAM10 Axis in Thoracic Aortic Aneurysm

    Fan, Zhineng / Liu, Shuan / Zhou, Houqing

    Biochemical genetics. 2022 Apr., v. 60, no. 2

    2022  

    Abstract: Thoracic aortic aneurysm (TAA) is a prevalent health problem worldwide. Long non-coding RNA H19was highly expressed in TAA patients, but the function and mechanism of H19 in TAA remain unknown. The expression levels of H19, microRNA-1-3p (miR-1-3p), and ... ...

    Abstract Thoracic aortic aneurysm (TAA) is a prevalent health problem worldwide. Long non-coding RNA H19was highly expressed in TAA patients, but the function and mechanism of H19 in TAA remain unknown. The expression levels of H19, microRNA-1-3p (miR-1-3p), and a disintegrin and metalloproteinase 10 (ADAM10) were detected by real-time quantitative polymerase chain reaction (RT-qPCR). Receiver operating characteristic (ROS) cure was performed to evaluate the diagnostic value of H19 on TAA patients. Proliferation and apoptosis were detected by Cell Counting Kit-8 (CCK-8), colony formation, and flow cytometry. Protein levels of proliferating cell nuclear antigen (PCNA), Cleaved-caspase 3 (Cleaved-cas3), Cleaved-caspase 9 (Cleaved-cas9), Collagen I, Collagen III, and ADAM10 were tested by western blot assay. The binding relationship between miR-1-3p and H19 or ADAM10 was predicted by LncBase Predicted v.2 or Starbase, and verified by the dual-luciferase reporter, RNA pull-down assay, and RNA Immunoprecipitation (RIP) assays. H19 was increased in TAA aorta tissues and serum and vascular smooth muscle cell (VSMC), and hindered proliferation as well as promoted apoptosis and extracellular matrix (ECM) degradation of VSMC. Moreover, miR-1-3p was decreased, and ADAM10 was upregulated in TAA aorta tissues and VSMC. The mechanical analysis confirmed that H19 affected ADAM10 expression by targeting miR-1-3p. Our results indicated that H19 inhibited proliferation, and accelerated apoptosis and ECM degradation of VSMC, providing an underlying lncRNA-targeted therapy for TAA treatment.
    Keywords Western blotting ; aneurysm ; aorta ; apoptosis ; blood serum ; collagen ; disease diagnosis ; extracellular matrix ; flow cytometry ; metalloproteinases ; non-coding RNA ; precipitin tests ; quantitative polymerase chain reaction ; smooth muscle ; therapeutics
    Language English
    Dates of publication 2022-04
    Size p. 790-806.
    Publishing place Springer US
    Document type Article
    ZDB-ID 2168-4
    ISSN 1573-4927 ; 0006-2928
    ISSN (online) 1573-4927
    ISSN 0006-2928
    DOI 10.1007/s10528-021-10118-y
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  5. Article ; Online: Antitumor effects of a novel photosensitizer-mediated photodynamic therapy and its influence on the cell transcriptome.

    Chen, Jingjing / Wang, Dan / Wang, Zequn / Han, Mengyuan / Yin, Houqing / Zhou, Wenting / Yan, Ribai / Pan, Yan

    Oncology research

    2024  Volume 32, Issue 5, Page(s) 911–923

    Abstract: Photodynamic therapy (PDT) is a promising cancer treatment. This study investigated the antitumor effects and mechanisms of a novel photosensitizer meso-5-[ρ-diethylene triamine pentaacetic acid-aminophenyl]-10,15,20-triphenyl-porphyrin (DTP) mediated ... ...

    Abstract Photodynamic therapy (PDT) is a promising cancer treatment. This study investigated the antitumor effects and mechanisms of a novel photosensitizer meso-5-[ρ-diethylene triamine pentaacetic acid-aminophenyl]-10,15,20-triphenyl-porphyrin (DTP) mediated PDT (DTP-PDT). Cell viability, reactive oxygen species (ROS), and apoptosis were measured with a Cell Counting Kit-8 assay, DCFH-DA fluorescent probe, and Hoechst staining, respectively. Cell apoptosis- and autophagy-related proteins were examined using western blotting. RNA sequencing was used to screen differentially expressed mRNAs (DERs), and bioinformatic analysis was performed to identify the major biological events after DTP-PDT. Our results show that DTP-PDT inhibited cell growth and induced ROS generation in MCF-7 and SGC7901 cells. The ROS scavenger N-acetyl-L-cysteine (NAC) and the P38 MAPK inhibitor SB203580 alleviated DTP-PDT-induced cytotoxicity. DTP-PDT induced cell apoptosis together with upregulated Bax and downregulated Bcl-2, which could also be inhibited by NAC or SB203580. The level of LC3B-II, a marker of autophagy, was increased by DTP-PDT. A total of 3496 DERs were obtained after DTP-PDT. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses indicated that DERs included those involved in cytosolic ribosomes, the nuclear lumen, protein binding, cell cycle, protein targeting to the endoplasmic reticulum, and ribosomal DNA replication. Disease Ontology and Reactome enrichment analyses indicated that DERs were associated with a variety of cancers and cell cycle checkpoints. Protein-protein interaction results demonstrated that
    MeSH term(s) Humans ; Photochemotherapy/methods ; Photosensitizing Agents/pharmacology ; Reactive Oxygen Species/metabolism ; Transcriptome ; Apoptosis/drug effects ; Cell Line, Tumor ; Porphyrins/pharmacology ; Cell Proliferation/drug effects ; Cell Survival/drug effects ; Autophagy/drug effects ; MCF-7 Cells ; Gene Expression Regulation, Neoplastic/drug effects ; Neoplasms/drug therapy ; Neoplasms/pathology ; Neoplasms/metabolism ; Neoplasms/genetics ; Gene Expression Profiling
    Chemical Substances Photosensitizing Agents ; Reactive Oxygen Species ; Porphyrins
    Language English
    Publishing date 2024-04-23
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1114699-0
    ISSN 1555-3906 ; 0965-0407
    ISSN (online) 1555-3906
    ISSN 0965-0407
    DOI 10.32604/or.2023.042384
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: LncRNA H19 Regulates Proliferation, Apoptosis and ECM Degradation of Aortic Smooth Muscle Cells Via miR-1-3p/ADAM10 Axis in Thoracic Aortic Aneurysm.

    Fan, Zhineng / Liu, Shuan / Zhou, Houqing

    Biochemical genetics

    2021  Volume 60, Issue 2, Page(s) 790–806

    Abstract: Thoracic aortic aneurysm (TAA) is a prevalent health problem worldwide. Long non-coding RNA H19was highly expressed in TAA patients, but the function and mechanism of H19 in TAA remain unknown. The expression levels of H19, microRNA-1-3p (miR-1-3p), and ... ...

    Abstract Thoracic aortic aneurysm (TAA) is a prevalent health problem worldwide. Long non-coding RNA H19was highly expressed in TAA patients, but the function and mechanism of H19 in TAA remain unknown. The expression levels of H19, microRNA-1-3p (miR-1-3p), and a disintegrin and metalloproteinase 10 (ADAM10) were detected by real-time quantitative polymerase chain reaction (RT-qPCR). Receiver operating characteristic (ROS) cure was performed to evaluate the diagnostic value of H19 on TAA patients. Proliferation and apoptosis were detected by Cell Counting Kit-8 (CCK-8), colony formation, and flow cytometry. Protein levels of proliferating cell nuclear antigen (PCNA), Cleaved-caspase 3 (Cleaved-cas3), Cleaved-caspase 9 (Cleaved-cas9), Collagen I, Collagen III, and ADAM10 were tested by western blot assay. The binding relationship between miR-1-3p and H19 or ADAM10 was predicted by LncBase Predicted v.2 or Starbase, and verified by the dual-luciferase reporter, RNA pull-down assay, and RNA Immunoprecipitation (RIP) assays. H19 was increased in TAA aorta tissues and serum and vascular smooth muscle cell (VSMC), and hindered proliferation as well as promoted apoptosis and extracellular matrix (ECM) degradation of VSMC. Moreover, miR-1-3p was decreased, and ADAM10 was upregulated in TAA aorta tissues and VSMC. The mechanical analysis confirmed that H19 affected ADAM10 expression by targeting miR-1-3p. Our results indicated that H19 inhibited proliferation, and accelerated apoptosis and ECM degradation of VSMC, providing an underlying lncRNA-targeted therapy for TAA treatment.
    MeSH term(s) ADAM10 Protein/genetics ; ADAM10 Protein/metabolism ; Amyloid Precursor Protein Secretases/metabolism ; Aorta/metabolism ; Aortic Aneurysm, Thoracic/genetics ; Aortic Aneurysm, Thoracic/metabolism ; Apoptosis/genetics ; Cell Proliferation/genetics ; Humans ; Membrane Proteins/genetics ; Membrane Proteins/metabolism ; MicroRNAs/genetics ; MicroRNAs/metabolism ; Myocytes, Smooth Muscle/metabolism ; RNA, Long Noncoding/genetics
    Chemical Substances H19 long non-coding RNA ; MIRN1 microRNA, human ; Membrane Proteins ; MicroRNAs ; RNA, Long Noncoding ; Amyloid Precursor Protein Secretases (EC 3.4.-) ; ADAM10 Protein (EC 3.4.24.81) ; ADAM10 protein, human (EC 3.4.24.81)
    Language English
    Publishing date 2021-09-03
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2168-4
    ISSN 1573-4927 ; 0006-2928
    ISSN (online) 1573-4927
    ISSN 0006-2928
    DOI 10.1007/s10528-021-10118-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Dramatic response to local radiotherapy in a refractory metastatic mediastinal yolk sac tumor patient harboring a germline

    Cheng, Xi / Yu, Haiming / Li, Jinying / Han, Xiaona / Meng, Erhong / Zhou, Houqing / Wang, Dongliang / Niu, Beifang / Zhang, Xiaotao

    Cancer biology & therapy

    2022  Volume 23, Issue 1, Page(s) 393–400

    Abstract: Mediastinal yolk sac tumors (YSTs) are highly aggressive germ cell tumors with an extremely poor prognosis. Radiotherapy plays an important role in the treatment of mediastinal YSTs. To maximize benefit from radiotherapy in patients with mediastinal YSTs, ...

    Abstract Mediastinal yolk sac tumors (YSTs) are highly aggressive germ cell tumors with an extremely poor prognosis. Radiotherapy plays an important role in the treatment of mediastinal YSTs. To maximize benefit from radiotherapy in patients with mediastinal YSTs, exploring functionally relevant biomarkers is essential. Previous studies have demonstrated that mutations in DNA-damage repair (DDR) genes, including
    MeSH term(s) Adult ; BRCA2 Protein/genetics ; Biomarkers ; Endodermal Sinus Tumor/genetics ; Endodermal Sinus Tumor/pathology ; Endodermal Sinus Tumor/radiotherapy ; Frameshift Mutation ; Germ-Line Mutation ; Humans ; Male ; Mediastinal Neoplasms/genetics ; Mediastinal Neoplasms/pathology ; Mediastinal Neoplasms/radiotherapy
    Chemical Substances BRCA2 Protein ; BRCA2 protein, human ; Biomarkers
    Language English
    Publishing date 2022-05-13
    Publishing country United States
    Document type Case Reports ; Journal Article
    ZDB-ID 2146305-0
    ISSN 1555-8576 ; 1538-4047
    ISSN (online) 1555-8576
    ISSN 1538-4047
    DOI 10.1080/15384047.2022.2072635
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Article ; Online: An alternative way of SARS-COV-2 to induce cell stress and elevated DNA damage risk in cardiomyocytes without direct infection.

    Zhou, Houqing / Ren, Xiaohu / Yang, Yang / Xu, Benhong / Li, Yichong / Feng, Yin / Shisong, Fang / Liu, Jianjun

    Immunity, inflammation and disease

    2022  Volume 10, Issue 7, Page(s) e638

    Abstract: Background: The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) in 2020 has led to millions of deaths worldwide. Case reports suggested that infection of SARS-CoV-2 is potentially associated with occurrences of cardiovascular ... ...

    Abstract Background: The outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-COV-2) in 2020 has led to millions of deaths worldwide. Case reports suggested that infection of SARS-CoV-2 is potentially associated with occurrences of cardiovascular pathology. However, the mode of action and mechanisms of SARS-CoV-2 influencing cardiomyocytes still remain largely unclear.
    Aims: To explore the mechanisms underlying cardiomyocytes damage induced by SARS-CoV-2 infection.
    Materials & methods: the serum markers of cardiovascular injury were analyzed by ELISA. The isolated SARS-CoV-2 virus were co-cultured with human cardiomyocytes (AC16) and immunofluorescence assay was used evaluate the invasion of virus. Moreover, serum obtained from acute stage of SARS-CoV-2 infected patients and healthy controls were used to incubate with AC16 cells, then indicators associated with cell stress and DNA damage were analyzed by Western-blot.
    Results: we found that high-sensitivity troponin T (hsTnT), an indicator of cardiovascular disease, was higher in the acute stage of COVID-19. Additionally, in vitro coculture of SARS-CoV-2 and AC16 cells showed almost no infectious ability of SARS-CoV-2 to directly infect AC16 cells. Results of serum treatment suggested that serum from infected subjects induced cell stress (upregulation of p53 and HSP70) and elevation of DNA damage risk (increased γH2Ax and H3K79me2) in AC16.
    Discussion: our observations indicated a hard way for SARS-CoV-2 to infect cardiomyocytes directly. However, infection-induced immune storm in serum could bring stress and elevated DNA damage risks to cardiovascular system.
    Conclusion: These findings indicated the possibilities of SARS-CoV-2 inducing stress and elevating DNA damage risk to cardiomyocytes without direct infection.
    MeSH term(s) COVID-19 ; DNA Damage ; Humans ; Myocytes, Cardiac/pathology ; SARS-CoV-2
    Language English
    Publishing date 2022-06-27
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2740382-8
    ISSN 2050-4527 ; 2050-4527
    ISSN (online) 2050-4527
    ISSN 2050-4527
    DOI 10.1002/iid3.638
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  9. Article ; Online: Genomic characterization of two metagenome-assembled genomes of

    Lv, Zhongdong / Chen, Yong / Zhou, Houqing / Chen, Zhonglin / Yao, Qianru / Ren, Jiali / Liu, Xianglu / Liu, Shuang / Deng, Xiaomei / Pang, Yingchen / Chen, Weijun / Yang, Huiling / Xu, Ping

    Frontiers in cellular and infection microbiology

    2022  Volume 12, Page(s) 947486

    Abstract: Whipple's disease is a rare chronic systemic disease that affects almost any organ system of the body caused by the intracellular ... ...

    Abstract Whipple's disease is a rare chronic systemic disease that affects almost any organ system of the body caused by the intracellular bacterium
    MeSH term(s) Fluoroquinolones ; Genomics ; Metagenome ; Phylogeny ; Tropheryma/genetics ; Virulence Factors
    Chemical Substances Fluoroquinolones ; Virulence Factors
    Language English
    Publishing date 2022-09-16
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2022.947486
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  10. Article ; Online: Integrative Expression and Prognosis Analysis of DHX37 in Human Cancers by Data Mining

    Kang Huang / Tudi Pang / Changjun Tong / Houqing Chen / Yupeng Nie / Jiayi Wu / Yandong Zhang / Ganghong Chen / Wei Zhou / Dazhi Yang

    BioMed Research International, Vol

    2021  Volume 2021

    Abstract: DHEA-Box Helicase 37 (DHX37) is a putative RNA helicase. It is involved in various RNA secondary structure alteration processes, including translation, nuclear splicing, and ribosome assembly. It is reported to be associated with the neurodevelopmental ... ...

    Abstract DHEA-Box Helicase 37 (DHX37) is a putative RNA helicase. It is involved in various RNA secondary structure alteration processes, including translation, nuclear splicing, and ribosome assembly. It is reported to be associated with the neurodevelopmental disorder with brain anomalies, and a recent study suggests that DHX37 is a functional regulator of CD8 T cells. Dysregulation of the CD8 T cell function is closely related to defective antitumor immune responses. In the present study, we investigated the expression, mutation, and prognostic role of DHX37 in human cancers, mainly by mining publicly available datasets. Our results suggested that DHX37 was significantly upregulated in 17 kinds of tumors. Mutations including deletions, insertions, and substitutions of DHX37 were widely detected. Besides, the expression of DHX37 was negatively correlated with immune-related genes PD-L1, RGS16, and TOX, and it was positively associated with TIM3, LAG3, and NCOR2. Through biofunctional analysis, we observed that DHX37 was significantly enriched in cancer-related pathways such as cell cycle, DNA replication, mismatch repair, RNA degradation, and RNA polymerase. In conclusion, the study explored the significance of DHX37 in human cancers. DHX37 may serve as a potential target for cancer immunotherapy.
    Keywords Medicine ; R
    Subject code 616
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Hindawi Limited
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

To top