Beibei Zhou's research while affiliated with First Affiliated Hospital of China Medical University and other places

Publications (10)

Preprint
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Background Colistin (COL) is one of the last-line antibiotics of defense against multidrug-resistant (MDR) gram-negative bacteria However, colistin-resistant (Col-R) Klebsiella pneumoniae (K. pneumoniae) is increasing, which limits the clinical use of COL. Saffron is a traditional Chinese medicine with the effects of promoting blood circulation and...
Article
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Introduction Phage is promising for the treatment of hypervirulent Klebsiella pneumoniae (hvKP) infections. Although phage resistance seems inevitable, we found that there still was optimization space in phage therapy for hvKP infection. Methods The clinical isolate K. pneumoniae FK1979 was used to recover the lysis phage ΦFK1979 from hospital sew...
Article
The bacteriophage vB8388 can lyse multi-drug resistant Klebsiella oxytoca strain FK-8388 and maintain stability in a wide range of temperatures (from 4 °C to 80 °C) and pHs (3–11). Bioinformatics analysis showed that vB8388 is a linear double-stranded DNA virus that is 39,750 long with 50.65% G + C content and 44 putative open reading frames (ORFs)...
Article
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This study aimed to analyze the influence of the main aerobactin-encoding gene iucB and the regulator of mucoid phenotype rmpA on the virulence of Klebsiella pneumoniae causing liver abscess. In addition, the possible regulatory effects of the main encoding gene iucB on the regulator of mucoid phenotype rmpA were explored, thus providing novel stra...
Article
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Klebsiella pneumoniae (K. pneumoniae) is one of the most common causes of bacterial meningitis worldwide. The purpose of this study was to investigate the clinical and microbiological characteristics of K. pneumoniae meningitis, as well as the association of antimicrobial resistance, virulence, and patient prognosis. The clinical data of patients w...
Article
Chlorhexidine is used widely to prevent the spread of bacteria in the hospital environment. However, bacteria are increasingly becoming tolerant to chlorhexidine. Here we investigated clinical characteristics, tolerance mechanisms, and molecular epidemiology of chlorhexidine-tolerant Pseudomonas aeruginosa (P. aeruginosa). According to the proposed...
Article
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Due to the lack of research on the characteristics of different clusters of Enterobacter cloacae complex (ECC), this study aimed to characterize and explore the differences among species of the ECC. An analysis based on hsp60 showed that Enterobacter hormaechei was predominant in ECC. Interestingly, the antibiotic resistance rates of clusters were...
Article
Objectives: To investigate the antibacterial activity of the novel β-lactamase inhibitor BLI-489 combined with imipenem or meropenem against diverse carbapenemase-producing carbapenem-resistant Enterobacterales (CRE) in vivo and in vitro. Methods: Twenty-five CRE strains, including Klebsiella pneumoniae (n = 10), Escherichia coli (n = 6) and Ent...
Article
Full-text available
Background: We aimed to determine the evolutionary pathways of rifampicin resistance in Staphylococcus aureus, and the impact of resistance mutations in the rpoB gene on fitness. Methods: Three clinical strains and one reference strain were used to select for rifampicin-resistant S. aureus variants. The mutations responsible for rifampicin resis...

Citations

... Bacteria frequently alter or hide phage receptors on the cell surface to evade detection by phages; these are often lipopolysaccharides (LPS) (for gram-negative bacteria), capsule, or various surfacelocalized proteins. In response, selection for mutations in receptor-binding proteins (RBP) enables phages to use modified or alternative receptors [2][3][4]. But this is not the full picture. ...
... The optical density at 600 nm (OD 600 ) of culture supernatants was measured following low-speed centrifuga tion (1,000 × g for 5 min) to assess the mucoviscosity. Acidic polysaccharides were extracted and measured to quantify CPS as described previously (29). Briefly, 500 µL of the bacterial culture of log-phase was mixed with 100 µL of 1% ZWITTERGENT 3-14 detergent in 100 mM citric acid, followed by incubation at 50°C for 20 min. ...
... [4][5][6][7][8] In addition, many cases of hypervirulent CRBs have been reported worldwide, making CRBs a real threat to public health. [9][10][11] Furthermore, the World Health Organization (WHO) classified carbapenem-resistant Enterobacteriaceae, Pseudomonas aeruginosa (P. ...
... Due to the gradual increase in the tolerance of clinically isolated P. aeruginosa to CHG [21], new methods are needed to restore bacterial susceptibility to CHG. Numerous studies have reported the use of bacteriophage for controlling the growth of pathogenic bacteria in the environment [22,23]. ...
... Enterobacter cancerogenus is a Gram-negative anaerobe bacillus [1,2]. It is widely distributed in nature [3], and has been successfully isolated from insect Diprion pini (Hymenoptera, Diprionidae) [4] and Lutzomyia evansi (Diptera, Psychodidae) [5] and plant tomato (Solanum lycopersicum) [6] and rice (Oryza sativa) [7]. A few reports suggest that E. cancerogenus may be a potential pathogen infecting patient skin and soft tissues when a wound exists and cause human diseases such as sepsis [8,9]. ...
... Likewise, rifampicin (RMP) is another transcription inhibitor antibiotic used to treat various bacterial infections and is often used in combination with other antimicrobials for severe S. aureus infections. It inhibits bacterial transcription by binding to the β-subunit of the bacterial DNA-dependent RNA polymerase (RNAP), which is encoded by the rpoB gene and rifampicin resistance in S. aureus are closely related to mutations occurring in the rpoB gene [16,17]. Therefore, with the widespread drug resistance and treatment failures of commonly used antibiotics reported daily around the world, it is more necessary than ever to explore the need to find an alternative way to maximize the effectiveness of antibiotics (https:// www. ...