Publications by authors named "Jian-Gang Zhang"

Introduction: Obesity is a major risk factor for metabolic and cardiovascular disorders. Recently, emerging biomarkers, such as the Visceral Adiposity Index (VAI) and Lipid Accumulation Product (LAP), have garnered attention for their utility in assessing visceral obesity. Bilirubin, a potent endogenous antioxidant, has been associated with protective effects against various diseases.

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The gut microbiota is increasingly recognized as a promising therapeutic target in cancer treatment. However, the specific mechanisms by which gut bacteria and their metabolites exert therapeutic effects in melanoma remain poorly understood. In this study, it is unexpectedly demonstrated that prophylactic supplementation with Limosilactobacillus reuteri exhibits significant tumor-suppressive properties, primarily mediated by its secreted metabolite, reuterin.

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The growing occurrence of antimicrobial resistance has called for an urgent need to develop new sources of antimicrobial agents against multidrug-resistant strains. The trillions of microbes living in the gut become gradually a promising source of novel antimicrobial agents. In this study, we isolated a candidate strain with good antibacterial activity identified as Bacillus haynesii strain B1 from the sheep intestine and obtained a novel antimicrobial peptide through B.

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The limited availability of adjuvants poses a significant challenge in modern vaccine development, as they play a crucial role in enhancing vaccine efficacy. Trained immunity, driven by metabolic and epigenetic reprogramming of innate immune cells, offers a novel platform for adjuvant discovery. However, current studies predominantly focus on classical inducers such as β-glucan and BCG, limiting the exploration of key genes underlying trained immune responses.

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Methicillin-resistant (MRSA) represents a major global health threat due to its resistance to conventional antibiotics. The commensal microbiota maintains a symbiotic relationship with the host, playing essential roles in metabolism, energy regulation, immune modulation, and pathogen control. Mammals harbor a wide range of commensal bacteria capable of producing unique metabolites with potential therapeutic properties.

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To compare the differences in floral composition and functions between the two types of microbiota, ileal contents and feces were collected from Sprague Dawley (SD) rats fed in a conventional or specific-pathogen free (SPF) environment and rats fed a high-fat diet (HFD), and the V3-V4 region of the 16S ribosomal ribonucleic acid (rRNA) gene in these rats was then amplified and sequenced. Compared with feces, about 60% of the bacterial genera in the ileum were exclusive, with low abundance (operational taxonomic units (OTUs) < 1000). Of bacteria shared between the ileum and feces, a few genera were highly abundant (dominant), whereas most had low abundance (less dominant).

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Article Synopsis
  • A new antimicrobial peptide called SR25 can kill both good (Gram-positive) and bad (Gram-negative) bacteria without them becoming resistant.
  • Scientists created a special gel using SR25 to help heal infected wounds, especially for diabetic patients.
  • The research shows that SR25 works in two ways to attack bacteria, making it very effective in treating infections caused by tough germs like E. coli and MRSA.
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Background: The prognostic significance of metastasis-associated in colon cancer-1 (MACC1) has been explored in a variety of malignancies. However, its clinical relevance in patients with gastric cancer (GC) is limited, also remains controversial.

Method: In this study, we retrospectively evaluated the prognostic value of lesion MACC1 expression in 347 GC patients.

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Article Synopsis
  • Trained immunity is when the immune system becomes really good at responding to infections after being activated, but sometimes it can cause problems if it responds too much.
  • In this study, researchers found that certain immune responses were stronger in special immune cells after being exposed to heat-killed C. albicans, which is a type of fungus.
  • They discovered that a medicine called dihydroartemisinin can help calm down these strong immune responses, which might help treat diseases caused by overactive immune systems.
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Article Synopsis
  • Clostridium perfringens is a harmful germ that can cause food safety problems and is tricky for farmers to deal with.
  • Researchers found that a special immune response called "trained immunity" helps protect against this germ, using a signaling pathway called mTOR.
  • By using a heat-killed fungus to train immune cells, they discovered that this training boosts the immune response, allowing the body to fight off the infection better.
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With the widespread use of antibiotics, the incidence of antibiotic resistance in microorganisms has increased. is a trunk borer of pine trees. This study aimed to investigate the antimicrobial and biological characteristics of TN-47 (PP411196), isolated from the gastrointestinal tract of in Jilin Province, PR China.

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Bacterial persister cells, a sub-population of dormant phenotypic variants highly tolerant to antibiotics, present a significant challenge for infection control. Investigating the mechanisms of antibiotic persistence is crucial for developing effective treatment strategies. Here, we found a significant association between tolerance frequency and previous infection history in bovine mastitis.

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A biobank is a central resource that supports basic and clinical research. RNA quality of fresh-frozen tissue specimens in the biobank is highly associated with the success of downstream applications. Therefore, it is very important to evaluate the impact of tissue processing and storage conditions on RNA quality.

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Pure cultures of chicken intestinal microbial species may still be crucial and imperative to expound on the function of gut microbiota, and also contribute to the development of potential probiotics and novel bioactive metabolites from gut microbiota. In this study, we isolated and identified 507 chicken intestinal bacterial isolates, including 89 previously uncultured isolates. Among these, a total of 63 strains, belonging to , , , , , and , exhibited antibacterial activity against .

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Interferon-inducible protein 204 (IFI204) is an intracellular DNA receptor that can recognize DNA viruses and intracellular bacteria. Extracellular traps (ETs) have been recognized as an indispensable antimicrobial barrier that play an indispensable role in bacterial, fungal, parasitic, and viral infections. However, how ETs form and the mechanisms by which IFI204 function in Staphylococcus aureus pneumonia are still unclear.

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Objective: To evaluate the prognostic significance of peripheral lymphocyte count and its derived inflammatory markers, such as neutrophil-to-lymphocyte ratio (NLR), in a cohort of patients with gastric cancer (GC).

Methods: In this retrospective study, the clinical characteristics and follow-up information, both pre- and post-operative within one week of laboratory findings, of 338 patients with GC who underwent radical gastrectomy were retrieved, and their prognostic significance was evaluated.

Results: Both lower pre- and post-operative lymphocyte counts and higher NLR and SSI were significantly related to advanced tumour (pT) and disease stages (American Joint Committee on Cancer [AJCC]) in patients with GC.

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Obesity is one of the prevalent chronic diseases in human and companion animals usually associated with several metabolic disorders. The gut commensal bacterium () is known for its therapeutic effects on metabolic disorders and inflammations. Here, we isolated the AKK2 strain from the feces of interferon-inducible protein 204 (IFI204) mice and further evaluated its anti-obesity effects on high-fat diet (HFD)-fed C57BL/6J mice and beagles.

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Antimicrobial compounds from the commensal gut microbiota have gained much attention due to their multifunctionality in maintaining good health in the host and killing multidrug-resistant bacteria. Our previous study showed that YPG26 isolated from chicken intestine can antagonize multiple pathogens. Herein, we characterized a bacteriocin-like inhibitory substance, jileicin, purified from YPG26.

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Extracellular trap (ET) appears as a double-edged sword for the host since it participates in host immune defense by entrapping pathogens, while excessive ET release also contributes to various diseases progression including atherosclerosis, cancer, and autoimmune disorders. A better understanding of ET formation and regulation will be beneficial for developing strategies for infection control and ET-associated disease treatment. There is some evidence indicating that prior infection can enhance extracellular killing.

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Background: The existing meta-analyses and randomized studies on comparing the effects of carvedilol and metoprolol are of poor quality, with small sample sizes, and involve a homogeneous population. Therefore, to provide new evidence-based medical evidence for clinical treatment, we undertook a systematic review and meta-analysis to compare the mortality benefits of carvedilol with metoprolol head to head and determine the better beta-blocker in acute myocardial infarction (AMI) setting.

Methods: Seven electronic databases including Web of Science, Embase, PubMed, Wanfang Data, Scopus, Science Direct, Cochrane Library will be searched in May 2021 by 2 independent reviewers.

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Signaling pathway between human leukocyte antigen (HLA)-G and immune inhibitory receptors immunoglobulin-like transcript (ILT)-2/4 has been acknowledged as one of immune checkpoints, and as a potential target for cancer immunotherapy. Like other immune checkpoints, inter- and even intratumor heterogeneity of HLA-G could render a rather complexity for HLA-G-target immunotherapy. However, little information for intratumor heterogeneity of HLA-G is available.

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A complex mode-locking (entrainment) topology underlying the continuous stirred tank reactor reaction model subjected to impulsive perturbations is identified. Employing high-resolution stability diagrams, we exhibit the global structure of mode-locking oscillations and describe how they are interconnected and how their complexity unfolds with control parameters varying. The scenarios shown in the bi-parametric planes revealed that the skeleton of Arnold's tongues is organized according to the symmetric Stern-Brocot sum tree.

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Background: Abnormal peripheral immunological features are associated with the progression of coronavirus disease 2019 (COVID-19).

Methods: Clinical and laboratory data were retrieved in a cohort of 146 laboratory-confirmed COVID-19 patients. Potential risk factors for the development of severe COVID-19 were evaluated.

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