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  1. Article ; Online: The presence of foci of

    Xu, Nannan / Liu, Hui / Qu, Chunmei / Wen, Sai / Zou, Wenlu / Chang, Caiyun / Wang, Gang

    Infectious medicine

    2023  Volume 2, Issue 4, Page(s) 334–337

    Abstract: China is not considered as an endemic area ... ...

    Abstract China is not considered as an endemic area of
    Language English
    Publishing date 2023-09-17
    Publishing country China
    Document type Case Reports
    ISSN 2772-431X
    ISSN (online) 2772-431X
    DOI 10.1016/j.imj.2023.09.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Comparison of metagenomic next-generation sequencing and conventional culture for the diagnostic performance in febrile patients with suspected infections.

    Yang, Hui / Xu, Nannan / Yan, Meichen / Yang, Lulu / Wen, Sai / Wang, Shanshan / Qu, Chunmei / Xu, Ke / Yang, Xuying / Wang, Gang

    BMC infectious diseases

    2024  Volume 24, Issue 1, Page(s) 350

    Abstract: Background: Timely and accurate identification of pathogens is crucial for appropriate treatment and prognosis of infectious diseases. As an increasingly popular pathogen detection method, the performance of metagenomic next-generation sequencing (mNGS) ...

    Abstract Background: Timely and accurate identification of pathogens is crucial for appropriate treatment and prognosis of infectious diseases. As an increasingly popular pathogen detection method, the performance of metagenomic next-generation sequencing (mNGS) in detecting pathogens in febrile patients with suspected infection requires further exploration.
    Methods: This study included 368 febrile patients with suspected infections who were admitted to the Infectious Disease Department of Qilu Hospital, Shandong University between January 5, 2021 and April 14, 2023. Both mNGS testing and conventional culture were performed in all patients. Clinical data of enrolled patients were collected, and the diagnostic performances of mNGS and culture were compared.
    Results: Of the 368 enrolled patients, 231 were finally diagnosed with infection and 137 were with diseases other than infection. The sensitivity (58.01% vs. 21.65%, p < 0.001) and negative predictive value (54.67% vs. 42.9%) of mNGS were superior to those of culture. In contrast, the culture exhibited higher specificity (99.27% vs. 85.40%, p < 0.001) and positive predictive value (98.84% vs. 87.01%) than mNGS. Among infected patients with positive mNGS results, 64 received adjusted antibiotic therapy including treatment transitions, antibiotic downgrading, and combination therapy. Among them, 9 had additional antifungal drugs and 21 patients had a treatment turning point based on the mNGS results and these patients recovered and discharged due to timely antibiotic adjustment. Both positive rates of puncture fluid mNGS and tissue mNGS were higher than those of culture in the patients who had prior antibiotic use, and this difference was statistically significant (p = 0.000).
    Conclusion: mNGS is more sensitive and accurate than traditional culture, making it ideal for identifying pathogens and screening infectious diseases, especially for those with uncultivated or difficult-to-cultivate species. Early diagnosis allows for prompt treatment with targeted antibiotics, and mNGS is recommended when samples are limited.
    MeSH term(s) Humans ; High-Throughput Nucleotide Sequencing ; Anti-Bacterial Agents ; Antifungal Agents ; Combined Modality Therapy ; Fever ; Communicable Diseases ; Sensitivity and Specificity
    Chemical Substances Anti-Bacterial Agents ; Antifungal Agents
    Language English
    Publishing date 2024-03-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 2041550-3
    ISSN 1471-2334 ; 1471-2334
    ISSN (online) 1471-2334
    ISSN 1471-2334
    DOI 10.1186/s12879-024-09236-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Case Report: Suspected Case of

    Qu, Chunmei / Xu, Nannan / Niu, Dehong / Wen, Sai / Yang, Hui / Wang, Shanshan / Wang, Gang

    Frontiers in immunology

    2022  Volume 13, Page(s) 923341

    Abstract: Human brucellosis is one of the most prevalent zoonoses. There are many similarities between the pathogenesis ... ...

    Abstract Human brucellosis is one of the most prevalent zoonoses. There are many similarities between the pathogenesis of
    MeSH term(s) Abscess/pathology ; Adult ; Brucella ; Brucellosis/complications ; Brucellosis/diagnosis ; Brucellosis/drug therapy ; Humans ; Immune Reconstitution Inflammatory Syndrome/diagnosis ; Immune Reconstitution Inflammatory Syndrome/drug therapy ; Immune Reconstitution Inflammatory Syndrome/etiology ; Male ; Mycobacterium tuberculosis
    Language English
    Publishing date 2022-07-22
    Publishing country Switzerland
    Document type Case Reports
    ZDB-ID 2606827-8
    ISSN 1664-3224 ; 1664-3224
    ISSN (online) 1664-3224
    ISSN 1664-3224
    DOI 10.3389/fimmu.2022.923341
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Evaluating the efficacy of serological testing of clinical specimens collected from patients with suspected brucellosis.

    Xu, Nannan / Qu, Chunmei / Sai, Lintao / Wen, Sai / Yang, Lulu / Wang, Shanshan / Yang, Hui / Liu, Hui / Wang, Gang

    PLoS neglected tropical diseases

    2023  Volume 17, Issue 2, Page(s) e0011131

    Abstract: Background: This study aims to evaluate the efficacy of the standard agglutination test (SAT), the Brucellacapt test and enzyme-linked immunosorbent assay (ELISA) in clinical specimens collected from patients with suspected brucellosis.: Methods: A ... ...

    Abstract Background: This study aims to evaluate the efficacy of the standard agglutination test (SAT), the Brucellacapt test and enzyme-linked immunosorbent assay (ELISA) in clinical specimens collected from patients with suspected brucellosis.
    Methods: A prospective study was conducted from December 2020 to December 2021. Brucellosis was diagnosed on the basis of clinical evidence, and confirmed by isolation of Brucella or a four-fold rise in SAT titer. All samples were tested by the SAT, ELISA and the Brucellacapt test. Titers ≥1:100 were considered as SAT positive; ELISA was considered positive when an index greater than 11 was detected, while titers ≥1/160 indicated positivity on the Brucellacapt test. The specificity, sensitivity, and positive (PPVs) and negative predictive values (NPVs) of the three different methods were calculated.
    Results: A total of 149 samples were collected from patients with suspected brucellosis. The sensitivities for the SAT, IgG, and IgM detection were 74.42%, 88.37% and 74.42%, respectively. The specificities were 95.24%, 93.65%, and 88.89%, respectively. The simultaneous measurement of IgG and IgM improved the sensitivity (98.84%) but reduced the specificity (84.13%) compared to each antibody test separately. The Brucellacapt test had excellent specificity (100%) and a high PPV (100%); however, the sensitivity and NPV were 88.37% and 86.30%, respectively. The combination of IgG detection by ELISA and the Brucellacapt test had excellent diagnostic performance, with 98.84% sensitivity and 93.65% specificity.
    Conclusion: This study showed that the simultaneous performance of IgG detection by ELISA and the Brucellacapt test has the potential to overcome the current limitations of detection.
    MeSH term(s) Humans ; Prospective Studies ; Antibodies, Bacterial ; Brucellosis/diagnosis ; Agglutination Tests/methods ; Enzyme-Linked Immunosorbent Assay/methods ; Immunoglobulin G ; Immunoglobulin M ; Sensitivity and Specificity
    Chemical Substances Antibodies, Bacterial ; Immunoglobulin G ; Immunoglobulin M
    Language English
    Publishing date 2023-02-21
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2429704-5
    ISSN 1935-2735 ; 1935-2735
    ISSN (online) 1935-2735
    ISSN 1935-2735
    DOI 10.1371/journal.pntd.0011131
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Disseminated Talaromyces marneffei infection associated with haemophagocytic syndrome in an HIV-negative patient in northern China: a case report.

    Yang, Hui / Liu, Ming / Xu, Nannan / Yang, Lulu / Wen, Sai / Wang, Shanshan / Qu, Chunmei / Xu, Ke / Sun, Enhua / Cui, Wen / Liu, Hui / Wang, Gang

    BMC infectious diseases

    2024  Volume 24, Issue 1, Page(s) 63

    Abstract: Background: Talaromyces marneffei is endemic to eastern India, Southeast Asia, and Guangdong and Guangxi provinces in China. It is common in immunocompromised individuals, especially in HIV-infected patients.: Case presentation: A 66-year-old male ... ...

    Abstract Background: Talaromyces marneffei is endemic to eastern India, Southeast Asia, and Guangdong and Guangxi provinces in China. It is common in immunocompromised individuals, especially in HIV-infected patients.
    Case presentation: A 66-year-old male who had a history of hypertension and resided in Shandong Province (Northern China) was admitted for recurrent fever for one month. The patient had recurrent fever, multiple lymphadenopathies, hepatosplenomegaly, a back rash, and a progressive decrease in white blood cells and platelets. Talaromyces marneffei was isolated from peripheral blood and bone marrow after admission, and suspected fungal cells were found via lymph node pathology. The patient's infection secondary to haemophagocytic syndrome continued to worsen despite antifungal, anti-inflammatory, and symptomatic treatment, leading to death due to multiple-organ failure.
    Conclusion: Although rare, infection due to Talaromyces marneffei in HIV-negative patients has been increasing in recent years, and we should be vigilant about "new" infections in nonendemic areas.
    MeSH term(s) Male ; Humans ; Aged ; Lymphohistiocytosis, Hemophagocytic/complications ; Lymphohistiocytosis, Hemophagocytic/diagnosis ; China ; HIV Infections
    Language English
    Publishing date 2024-01-08
    Publishing country England
    Document type Case Reports ; Journal Article
    ZDB-ID 2041550-3
    ISSN 1471-2334 ; 1471-2334
    ISSN (online) 1471-2334
    ISSN 1471-2334
    DOI 10.1186/s12879-023-08953-y
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Metagenomic surveillance in Jinan, China, reveals serum microbiome and biochemistry features in fever of unknown origin (FUO) patients.

    Liu, Ming / Liu, Hui / Li, Fenghua / Shen, Yang / Zhang, Liwen / Wang, Gang / Wang, Haitao / Qu, Chunmei / Chen, Gonghai / Zhao, Xiulan / Liu, Lanzheng / Zhou, Jun

    Letters in applied microbiology

    2023  Volume 76, Issue 6

    Abstract: Here we aim to build up a metagenomics-centered surveillance on the infectious microbiome showing in the fever of unknown origin (FUO) patients. We collected venous blood, bronchoalveolar lavage fluid, cerebrospinal fluid, tissue block, sputum, bone ... ...

    Abstract Here we aim to build up a metagenomics-centered surveillance on the infectious microbiome showing in the fever of unknown origin (FUO) patients. We collected venous blood, bronchoalveolar lavage fluid, cerebrospinal fluid, tissue block, sputum, bone marrow biopsy, and purulent liquid samples from 123 patients. Metagenomic sequencing (mNGS) for both DNA and RNA sequences was performed to profile the total pathogenic microbiome in the samples. A large pool of infectious or conditional infectious bacteria was found, belonging to Enterobacteriaceae, Staphylococcaceae (10.55%), Burkholderiaceae (10.05%), and Comamonadaceae (4.25%). The major virus families detected from mNGS analysis include Adenoviridae, Anelloviridae, Peribunyaviridae, Flaviviridae, and Herpesviridae, showing up in 34.96%, 47.37%, 30.89%, 5.69%, 3.25%, and 1.63% of patients, respectively. Using the Ward clustering method, two clusters of patients were organized: high-variety group and low-variety group. The patients in the high-variety group demonstrated higher levels of immune cells and inflammatory indicators such as lactate dehydrogenase, aspartate aminotransferase, and alanine aminotransferase. The patients in the low-variety group showed higher levels of inflammatory lipids such as 13,14-dihy-15-keto PGE2 (fold > 10, P = 0.021); tetra-PGDM (fold = 5.29, P = 0.037); and 20-HETE (fold > 10, P = 0.02). The mNGS surveillance system demonstrated remarkable potential in preventing infectious diseases using mNGS data.
    MeSH term(s) Humans ; Fever of Unknown Origin/diagnosis ; Metagenomics/methods ; Microbiota/genetics ; Bacteria/genetics ; Metagenome ; High-Throughput Nucleotide Sequencing/methods ; Sensitivity and Specificity
    Language English
    Publishing date 2023-05-19
    Publishing country England
    Document type Journal Article
    ZDB-ID 632584-1
    ISSN 1472-765X ; 0266-8254
    ISSN (online) 1472-765X
    ISSN 0266-8254
    DOI 10.1093/lambio/ovad060
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Overexpression of Abl2 predicts poor prognosis in hepatocellular carcinomas and is associated with cancer cell migration and invasion.

    Xing, Quan-Tai / Qu, Chun-Mei / Wang, Gang

    OncoTargets and therapy

    2014  Volume 7, Page(s) 881–885

    Abstract: Introduction: Abl2 nonreceptor tyrosine kinase (Arg, c-abl oncogene 2) has recently been identified as being recurrently amplified at DNA levels and overexpressed at mRNA levels in hepatocellular carcinomas (HCCs), and might be a potential oncogenic ... ...

    Abstract Introduction: Abl2 nonreceptor tyrosine kinase (Arg, c-abl oncogene 2) has recently been identified as being recurrently amplified at DNA levels and overexpressed at mRNA levels in hepatocellular carcinomas (HCCs), and might be a potential oncogenic driver and therapeutic target for HCC.
    Methods: In this study, we investigated the Abl2 expression in a series of HCC tumors by immunohistochemistry and further evaluated its clinicopathological and prognostic significance. We also performed an in vitro experiment to validate the effect of Abl2 gene silencing on the migration and invasion abilities of human liver cancer HepG2 cells.
    Results: It has been demonstrated that Abl2 was unregulated in 37.3% (28/75) of primary HCC tissues, and was significantly associated with a shorter overall survival time (P=0.0005). In addition, Abl2 gene silencing in HepG2 cells significantly attenuated its migration and invasion abilities in vitro. We also found that the phosphorylation of metastasis-associated gene cortactin was markedly decreased by Abl2 silencing.
    Conclusion: We propose that Abl2 might be a potential candidate therapeutic target for HCCs and that targeted therapies against Abl2 in the treatment of HCCs deserve further investigation in the future.
    Language English
    Publishing date 2014-05-30
    Publishing country New Zealand
    Document type Journal Article
    ZDB-ID 2495130-4
    ISSN 1178-6930
    ISSN 1178-6930
    DOI 10.2147/OTT.S62348
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Isolation and characterization of 46 novel polymorphic EST-simple sequence repeats (SSR) markers in two Sinipercine Fishes (Siniperca) and cross-species amplification.

    Qu, Chunmei / Liang, Xufang / Huang, Wei / Cao, Liang

    International journal of molecular sciences

    2012  Volume 13, Issue 8, Page(s) 9534–9544

    Abstract: With the development of next generation sequencing technologies, transcriptome level sequence collections are emerging as prominent resources for the discovery of gene-based molecular markers. In this study, we described the isolation and ... ...

    Abstract With the development of next generation sequencing technologies, transcriptome level sequence collections are emerging as prominent resources for the discovery of gene-based molecular markers. In this study, we described the isolation and characterization of 46 novel polymorphic microsatellite loci for Siniperca chuatsi and Siniperca scherzeri from the transcriptome of their F(1) interspecies hybrids. Forty-three of these loci were polymorphic in S. chuatsi, and 20 were polymorphic in S. scherzeri. In S. chuatsi, the number of alleles per locus ranged from 2 to 8, and the observed and expected heterozygosities varied from 0.13 to 1.00 and from 0.33 to 0.85, respectively. In S. scherzeri, the number of alleles per locus ranged from 3 to 9, and the observed and expected heterozygosities varied from 0.19 to 1.00 and from 0.28 to 0.88, respectively. We also evaluated the cross-amplification of 46 polymorphic loci in four species of sinipercine fishes: Siniperca kneri, Siniperca undulata, Siniperca obscura, and Coreoperca whiteheadi. The interspecies cross-amplification rate was very high, totaling 94% of the 184 locus/taxon combinations tested. These markers will be a valuable resource for population genetic studies in sinipercine fishes.
    MeSH term(s) Animals ; Expressed Sequence Tags ; Fishes/genetics ; Genetic Markers/genetics ; High-Throughput Nucleotide Sequencing ; Microsatellite Repeats/genetics ; Polymorphism, Genetic/genetics ; Sequence Analysis, DNA ; Species Specificity
    Chemical Substances Genetic Markers
    Language English
    Publishing date 2012-07-30
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms13089534
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: The natural logarithm of zinc-α2-glycoprotein/HOMA-IR is a better predictor of insulin sensitivity than the product of triglycerides and glucose and the other lipid ratios.

    Qu, Chunmei / Zhou, Xiaoxin / Yang, Gangyi / Li, Ling / Liu, Hua / Liang, Zerong

    Cytokine

    2016  Volume 79, Page(s) 96–102

    Abstract: Aim: The euglycemic-hyperinsulinemic clamp (EHC) is not available in most clinical settings and is costly, time consuming and invasive, and requires trained staff. Therefore, an accessible and inexpensive test to identify insulin resistance (IR) is ... ...

    Abstract Aim: The euglycemic-hyperinsulinemic clamp (EHC) is not available in most clinical settings and is costly, time consuming and invasive, and requires trained staff. Therefore, an accessible and inexpensive test to identify insulin resistance (IR) is needed. The aim of this study is to assess whether zinc-α2-glycoprotein (ZAG) index [Ln ZAG/homeostasis model assessment of IR (HOMA-IR)] is a better surrogate index for estimating IR or metabolic syndrome (MetS) compared with other surrogate indices.
    Methods: We performed a population-based cross-sectional study. Two hundred healthy subjects, 102 polycystic ovary syndrome (PCOS) patients, 97 newly diagnosed type 2 diabetes mellitus (nT2DM) and 84 impaired glucose tolerance (IGT) subjects were enrolled. The EHC was performed to identify IR. Circulating ZAG and adiponectin levels were determined by ELISA.
    Results: The ZAG index was significantly lower in participants with IR including IGT, nT2DM and PCOS than in those without IR. In addition, subjects with MetS had lower ZAG indices and higher the product of fasting triglycerides and glucose (TyG) indices than those without MetS. The ZAG index showed a significantly stronger association with M values than the other surrogate indices, whereas the TyG index showed a stronger association with MetS. The optimal cutoff value of the ZAG index for detection of IR was 2.97 with a sensitivity of 88% and a specificity of 91%, whereas the optimal cutoff value of TyG index for detection of MetS was 4.90 with a sensitivity of 82% and a specificity of 86%.
    Conclusion: The ZAG index is a better marker than the other surrogate indices for identifying IR, whereas the TyG index has high sensitivity and specificity for identifying MetS.
    MeSH term(s) Adiponectin/blood ; Adult ; Aged ; Blood Glucose/analysis ; Cross-Sectional Studies ; Diabetes Mellitus, Type 2/blood ; Diabetes Mellitus, Type 2/diagnosis ; Enzyme-Linked Immunosorbent Assay ; Female ; Glucose Intolerance/blood ; Glucose Intolerance/diagnosis ; Humans ; Insulin Resistance/physiology ; Male ; Metabolic Syndrome/blood ; Metabolic Syndrome/diagnosis ; Middle Aged ; Polycystic Ovary Syndrome/blood ; Polycystic Ovary Syndrome/diagnosis ; Seminal Plasma Proteins/blood ; Triglycerides/blood
    Chemical Substances Adiponectin ; Blood Glucose ; Seminal Plasma Proteins ; Triglycerides ; Zn-alpha-2-glycoprotein
    Language English
    Publishing date 2016-03
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1018055-2
    ISSN 1096-0023 ; 1043-4666
    ISSN (online) 1096-0023
    ISSN 1043-4666
    DOI 10.1016/j.cyto.2015.12.024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: Clinical and molecular epidemiology of norovirus infection in adults with acute gastroenteritis in Ji’nan, China

    Sai, Lintao / Wang, Gang / Shao, Lihua / Liu, Haihong / Zhang, Yajun / Qu, Chunmei / Ma, Lixian

    Archives of virology. 2013 Nov., v. 158, no. 11

    2013  

    Abstract: Acute gastroenteritis caused by human noroviruses (NoVs) has become an important public health problem worldwide. This study was carried out to investigate the rates of NoV infections and the genetic characteristics of NoVs in adult outpatients with ... ...

    Abstract Acute gastroenteritis caused by human noroviruses (NoVs) has become an important public health problem worldwide. This study was carried out to investigate the rates of NoV infections and the genetic characteristics of NoVs in adult outpatients with acute gastroenteritis in Ji’nan, a large eastern city in China. A total of 480 fecal samples were collected from outpatients at the Shandong University Qilu Hospital between June 2010 and May 2011. Of the collected samples, 42 (42/480, 8.75� %) were positive for NoVs by RT-PCR, and seven different genotypes were identified: GI-1, GI-4, GII-1, GII-3, GII-4, GII-6 and GII-13, of which GII-4 was the most prevalent (29/42, 69.0� %). Phylogenetic and Simplot analyses showed that three recombinant strains were detected: two GII-4 polymerase/GII-3 capsid recombinants and one GII-6 polymerase/GII-4 capsid recombinant. This study indicated that NoV was a common causative agent of sporadic acute gastroenteritis in adults in Ji’nan, China, and that NoV GII-4 was the predominant strain during this period. Three recombinant strains were identified in which GII-6 polymerase/GII-4 capsid was detected for the first time in China.
    Keywords adults ; capsid ; feces ; gastroenteritis ; genotype ; molecular epidemiology ; patients ; public health ; China
    Language English
    Dates of publication 2013-11
    Size p. 2315-2322.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 7491-3
    ISSN 1432-8798 ; 0304-8608
    ISSN (online) 1432-8798
    ISSN 0304-8608
    DOI 10.1007/s00705-013-1753-0
    Database NAL-Catalogue (AGRICOLA)

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