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by Jianhua Liao, Jun Cheng, Baoqing Liu, Yuzhi Shao, Chunyan Meng
The growing prevalence of methicillin-resistant Staphylococcus aureus (MRSA) infections, coupled with the increasing resistance to existing antibiotics, underscores the critical need for novel therapeutic approaches to combat this pathogen. In this study, the role of yqhG, a conserved gene encoding a periplasmic protein, in MRSA virulence and stress adaptation was investigated. yqhG deletion in MRSA significantly attenuated virulence in a murine infection model, leading to reduced bacterial burden in infected organs and improved host survival. In vitro, the yqhG mutant exhibited impaired membrane integrity, reduced motility, and increased sensitivity to oxidative stress, but did not affect biofilm formation. These defects were fully restored upon genetic complementation. These findings highlight the critical role of yqhG in maintaining MRSA’s ability to withstand host-imposed stresses, suggesting that yqhG is a key determinant of MRSA pathogenesis. The study provides new insights into the stress-defense mechanisms employed by MRSA and underscores yqhG as a potential target for therapeutic strategies aimed at combating MRSA infections.The best evidence on programmed weaning from mechanical ventilation in neurocritical care patients should be gathered, evaluated, and integrated to provide an evidence basis for determining the optimal weaning program for these patients.
According to the ‘6S’ pyramid model of evidence-based practice resources, Chinese and international guideline websites, websites of relevant professional societies, and Chinese and English databases were systematically searched. The databases were searched from the time of establishment to October 2024. Literature screening was subsequently performed according to the inclusion and exclusion criteria. Two researchers independently evaluated the literature quality and extracted and summarised the evidence.
A total of 21 publications were included, including 3 guidelines, 5 expert consensus papers, 1 evidence summary, and 12 systematic reviews. A total of 29 pieces of best evidence in the following 5 aspects were summarised: preweaning preparation and screening, a weaning protocol, extubation assessment, extubation preparation and procedure, and postextubation management.
This study summarises the best evidence for the programmed weaning of neurocritical care patients from mechanical ventilation and provides a basis for clinical medical personnel to standardise this weaning process. Evidence-based application of these strategies should be implemented to verify their clinical efficacy and safety in practice.
Successful weaning is key in the management of neurocritical care patients receiving mechanical ventilation. The establishment of a localised extubation protocol guided by a multidisciplinary team can significantly reduce the extubation failure rate, the duration of mechanical ventilation and the incidence of related complications. However, evidence-based application is needed to verify the efficacy and safety of these strategies in clinical practice.
This evidence review adhered to the evidence review report guidelines formulated by the Evidence-Based Nursing Center of Fudan University. These guidelines cover aspects such as problem establishment, literature search, literature screening, literature evaluation, evidence summary and classification, as well as the formulation of practical suggestions. This evidence summary followed the evidence summary reporting specifications of the Fudan University Center for Evidence-Based Nursing (http://ebn.nursing.fudan.edu.cn) with registration number ES20244849.
This study was based on the evidence summary reporting specifications of the Fudan University Center for Evidence-based Nursing; the registered name is ‘Summary of the best evidence for weaning from mechanical ventilation in neurocritical care patients’; the registration number is ES20231823
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