Publications by authors named "Xu Junnan"

Acid adaptive response (AAR) is a survival mechanism that allows bacteria to develop enhanced stress tolerance. Our previous research identified AAR in Alicyclobacillus acidoterrestris, a thermo-acidophilic bacterium responsible for fruit juice spoilage. However, the roles of specific acidulants, adaptive temperatures, and acidic juice matrices in triggering AAR remain elusive.

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  • Most research on the human gut microbiome has prioritized bacteria, leaving a gap in understanding the role of fungi, despite their growing importance in health and disease.*
  • Recent technology advancements have spurred research on fungal communities, revealing their impact on various health conditions, including cancer, asthma, and mental disorders.*
  • The review emphasizes the need to consider intestinal and peri-tumor fungi in cancer research, exploring their roles in tumor development, immune regulation, and potential as biomarkers for diagnosis and treatment.*
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Among women, breast cancer is the most prevalent form of a malignant tumour. Among the subtypes of breast cancer, hormone receptor (HR) positive and human epidermal growth factor receptor (HER2) negative kinds make up the biggest proportion. The advent of cyclin-dependent kinase 4 and 6 (CDK4/6) inhibitors, which are dependent on cell cycle proteins, has greatly enhanced the prognosis of patients with advanced HR+/HER2- breast cancer.

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  • The NEOTAX phase 2 study explored how effective and safe the combination of toripalimab and axitinib is for patients with clear cell renal cell carcinoma and inferior vena cava tumor thrombus.
  • Out of 25 patients, 44% showed a reduction in thrombus level, with a median decrease in tumor thrombus length of 2.3 cm, while 61.9% had changes in their surgical approach.
  • The study found promising progression-free survival rates (25.3 months median; 89.1% at 1 year) and noted no severe treatment-related adverse events, suggesting that the combination therapy effectively downstages the tumor and improves surgical outcomes.
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Background: The relationship between dysbiosis of the gastrointestinal microbiota and gastric cancer (GC) has been extensively studied. However, microbiota alterations in GC patients vary widely across studies, and reproducible diagnostic biomarkers for early GC are still lacking in multiple populations. Thus, this study aimed to characterize the gastrointestinal microbial communities involved in gastric carcinogenesis through a meta-analysis of multiple published and open datasets.

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  • The study compared the effectiveness and safety of two laser methods, Moses and Raykeen, for treating impacted upper ureteral stones in 72 patients using flexible ureteroscopic lithotripsy.
  • Results showed that the Moses laser had a shorter operative and lithotripsy time, but both methods had similar rates of successful stone removal and no significant complications.
  • The research concluded that both laser modes are effective, but the powdered mode of Raykeen may be more beneficial for treating these types of stones, as the ablation speed was linked to stone volume rather than density.
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  • The study examines the role of astrocytes in the ventral hippocampus (vHPC) in anxiety disorders, a common mental illness.
  • Using advanced imaging and genetic techniques, the researchers found that astrocytic activity in the vHPC increases in stressful situations and contributes to anxiety-like behaviors.
  • Inhibiting vHPC astrocytes can reduce anxiety, while activating them worsens anxiety behaviors, suggesting that these cells could be promising targets for future anxiety treatments.
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Cancer poses a severe threat to human health. Although conventional chemotherapy remains a cornerstone of cancer treatment, its significant side effects and the growing issue of drug resistance necessitate the urgent search for more efficient and less toxic anticancer drugs. In recent years, bacteriocins, antimicrobial peptides of microbial origin, have garnered significant attention due to their targeted antitumor activity.

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To explore the differences of vaginal microbes in women with preterm birth (PTB), and to construct prediction model. We searched for articles related to vaginal microbiology in preterm women and obtained four 16S rRNA-sequence datasets. We analyzed that for species diversity and differences, and constructed a random forest model with 20 differential genera.

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  • Studies show that tiny organisms in our guts can affect tumors, or cancer growth, and how our immune system reacts.
  • Research is looking into how the different chemicals made by these organisms can either help or harm cancer treatment.
  • Understanding these chemicals might help doctors find new treatments for cancer that work better and make patients feel better during their therapy.
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To investigate the vaginal microbiota signature of patients with gynecologic cancer and evaluate its diagnostic biomarker potential. We incorporated vaginal 16S rRNA-seq data from 529 women and utilized VSEARCH to analyze the raw data. α-Diversity was evaluated utilizing the Chao1, Shannon, and Simpson indices, and β-diversity was evaluated through principal component analysis using Bray-Curtis distances.

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Objective: To investigate the vaginal and gut microbes changes during the carcinogenesis of cervical and the auxiliary diagnostic value. To investigate the effect of microbiome-specific metabolites butyric on cervical cancer cells.

Methods: We studied 416 vaginal 16S rRNA sequencing data and 116 gut sequencing data.

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Background: Inflammation is critical in the etiology and progression of acute respiratory distress syndrome (ARDS). This study aims to rigorously assess the predictive capacity of systemic immune-inflammation index (SII) in determining the outcomes of patients with ARDS.

Methods: Patient data were extracted from version 2.

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The stomach was once considered a sterile organ until the discovery of . With the application of high-throughput sequencing technology and macrogenomics, researchers have identified fungi and fivemajor bacterial phyla within the stomachs of healthy individuals. These microbial communities exert regulatory influence over various physiological functions, including energy metabolism and immune responses.

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Fruit juice spoilage that caused by contaminated has brought huge losses to beverage industry worldwide. Thus, it is very essential to understand the growth and metabolism processing of () in controlling juice spoilage caused by . In this work, simulative models for the growth and metabolism of were systematically conducted in the medium and fruit juice.

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Background: The relationship between commensal microbiota and lung cancer (LC) has been studied extensively. However, developing replicable microbiological markers for early LC diagnosis across multiple populations has remained challenging. Current studies are limited to a single region, single LC subtype, and small sample size.

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A lung abscess is a necrotizing infection caused by microbiomes that lead to the loss of healthy lung tissue. The routine culture is a waste of time and yields false-negative results, and clinicians could only choose empiric therapy or use broad-spectrum antibiotics, which could significantly contribute to the problem of resistance or aggravate the condition. We report three patients with a routine-culture-negative lung abscess.

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  • Alicyclobacillus acidoterrestris is a heat-resistant and acid-loving bacterium that can spoil pasteurized acidic juice, and this study investigated its responses to acid stress at pH 3.0.
  • The study identified 63 differential metabolites related to changes in amino acid, nucleotide, and energy metabolism, indicating that acid stress affects the bacterium’s growth and metabolic activity.
  • The research combined transcriptomic and metabolomic analyses to highlight mechanisms like intracellular pH regulation and specific transport systems that help the bacterium survive acid stress, providing valuable insights for controlling its impact on fruit juice spoilage.
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Objective: To investigate non-anticoagulant factors that affect blood coagulation in the extracorporeal circulation (ECC) circuit of regional citrate anticoagulation (RCA) protocol for hemodialysis (HD).

Method: The clinical characteristics of patients undergoing an individualized RCA protocol for HD between February 2021 and March 2022 were collected; Coagulation scores, pressures in various parts of the ECC circuit, the incidence of coagulation, and citrate concentrations in the ECC circuit during treatment were determined, and non-anticoagulant factors affecting coagulation in the ECC circuit were analyzed.

Result: The lowest clotting rate was 2.

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Using ECG signals captured by wearable devices for emotion recognition is a feasible solution. We propose a deep convolutional neural network incorporating attentional mechanisms for ECG emotion recognition. In order to address the problem of individuality differences in emotion recognition tasks, we incorporate an improved Convolutional Block Attention Module (CBAM) into the proposed deep convolutional neural network.

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Spoilage of juice and beverages by a thermo-acidophilic bacterium, Alicyclobacillus acidoterrestris, has been considered to be a major and widespread concern for juice industry. Acid-resistant property of A. acidoterrestris supports its survival and multiplication in acidic juice and challenges the development of corresponding control measures.

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Aim: To study the risk factors for cancer-specific mortality (CSM) among patients with localized clear cell renal carcinoma (LCCRC) in the Chinese population.

Methods: The clinical data of 1,376 LCCRC patients were postoperatively collected to analyze the correlations between CSM and multiple factors using Cox regression analysis. Receiver operating characteristic curves were constructed as per the screened risk factors to identify factors with optimal criticality judgment values, which were then used as the scoring standard for the stratification evaluation of LCCRC prognosis.

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Cervical, ovarian and endometrial cancer are the three most common types of gynecologic cancer. As a hub, the vagina connects the site of gynecological cancer with the external environment. Lactobacilli participate in the formation of a healthy vaginal microenvironment as the first line of defense against pathogen invasion; a dysbiotic vaginal microenvironment loses its original protective function and is associated with the onset, metastasis, poor efficacy and poor prognosis of gynecological cancer.

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Pharmacological manipulation of mGluR5 has showed that mGluR5 is implicated in the pathophysiology of anxiety and mGluR5 has been proposed as a potential drug target for anxiety disorders. Nevertheless, the mechanism underlying the mGluR5 involvement in stress-induced anxiety-like behavior remains largely unknown. Here, we found that chronic restraint stress induced anxiety-like behavior and decreased the expression of mGluR5 in hippocampal CA1.

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Introduction: A growing body of evidence indicates that the dysbiosis of both mammary and intestinal microbiota is associated with the initiation and progression of breast tumors. However, the microbial characteristics of patients with breast tumors vary widely across studies, and replicable biomarkers for early-stage breast tumor diagnosis remain elusive.

Methods: We demonstrate a machine learning-based method for the analysis of breast tissue and gut microbial differences among patients with benign breast disease, patients with breast cancer (BC), and healthy individuals using 16S rRNA sequence data retrieved from eight studies.

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