Jessica Howard-Anderson, Toshimitsu Hamasaki, Weixiao Dai, Deborah Collyar, Daniel Rubin, Sumathi Nambiar, Tori Kinamon, Heidi Leister-Tebbe, Carol Hill, Holly Geres, Thomas L Holland, Sarah B Doernberg, Henry F Chambers, Vance G Fowler, Scott R Evans, Helen W Boucher
BACKGROUND: Hospital-acquired and ventilator-associated bacterial pneumonia (HABP/VABP) are frequently caused by multidrug-resistant organisms. Patient-centered endpoints in clinical trials are needed to develop new antibiotics for HABP/VABP. Desirability of outcome ranking (DOOR) is a paradigm for the design, analysis, and interpretation of clinical trials based on a patient-centered, benefit-risk evaluation. METHODS: A multidisciplinary committee created an infectious diseases DOOR endpoint customized for HABP/VABP, incorporating infectious complications, serious adverse events, and mortality...
September 22, 2023: Clinical Infectious Diseases
Jiangwei Zhu, Xue Liu, Xiaowen Zhan, Mengzhu Wang, Yuling Zhang, Li Na, Shujun Li
BACKGROUND: There are relatively few studies investigating C-C motif chemokine ligand 2 (CCL2) level in bronchoalveolar lavage fluid (BALF) in children with Mycoplasma pneumoniae pneumonia (MPP), and the relationship between CCL2 level in BALF and refractory mycoplasma pneumoniae pneumonia (RMPP) is unclear. This study aims to explore the relationship between chemokine CCL2 level in BALF and clinical characteristics and clinical outcome in children with MPP. METHODS: A total of 51 children with confirmed acute MPP and requiring bronchoalveolar lavage in Department of Pediatrics, Huanghe Sanmenxia Hospital and The First Clinical College of Xinxiang Medical University from October 2021 to February 2023 were selected as the study group...
September 23, 2023: Italian Journal of Pediatrics
Tsepo Ramatla, Tshepo Mafokwane, Kgaugelo Lekota, Maropeng Monyama, George Khasapane, Naledi Serage, Jane Nkhebenyane, Carlos Bezuidenhout, Oriel Thekisoe
BACKGROUND: The Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) bacterial isolates that produce extended-spectrum β-lactamases (ESBLs) contribute to global life-threatening infections. This study conducted a systematic review and meta-analysis on the global prevalence of ESBLs in co-existing E. coli and K. pneumoniae isolated from humans, animals and the environment. METHODS: The systematic review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO) [ID no: CRD42023394360]...
September 22, 2023: Annals of Clinical Microbiology and Antimicrobials
Chih-Jun Lai, Po-Yuan Shih, Ya-Jung Cheng, Ching-Kai Lin, Shih-Jung Cheng, Hsin-Hui Peng, Wen-Ting Chang, Kuo-Liong Chien
BACKGROUND: Postoperative pulmonary complications (PPCs) increase the risk of morbidity and mortality in patients who underwent oral cancer surgery with free flap reconstruction. The association between PPC and preoperative risk factors has been investigated; however, reports on intraoperative factors are limited. Therefore, we investigated PPC incidence and its associated preoperative and intraoperative risk factors in these patients. METHODS: We retrospectively analyzed medical records of patients who underwent free flap reconstruction between 2009 and 2019...
September 20, 2023: Journal of the Formosan Medical Association
Yongrong Hu, Liping Wang, Hao Liu, Kunhai Yang, Song Wang, Xiang Zhang, Bo Qu, Hongsheng Yang
BACKGROUND: Postoperative complications of spinal surgery are a common clinical problem, which impose significant economic and clinical burdens on patients and medical staff. Previous studies have suggested a close relationship between low-protein malnutrition and postoperative complications of surgery. However, the relationship between preoperative malnutrition and various orthopedic postoperative complications remains unclear. PURPOSE: To investigate the association between protein malnutrition and postoperative complications and outcomes...
October 2023: Clinical Nutrition ESPEN
Bishoy Maher Zaki, Assmaa H Hussein, Toka A Hakim, Mohamed S Fayez, Ayman El-Shibiny
Klebsiella pneumoniae is an opportunistic pathogen involved in both hospital- and community-acquired infections. K. pneumoniae is associated with various infections, including pneumonia, septicemia, meningitis, urinary tract infection, and surgical wound infection. K. pneumoniae possesses serious virulence, biofilm formation ability, and severe resistance to many antibiotics especially hospital-acquired strains, due to excessive use in healthcare systems. This limits the available effective antibiotics that can be used for patients suffering from K...
2023: Progress in Molecular Biology and Translational Science
Dawei Chen, Jing Zhao, Mengqing Ma, Lingling Jiang, Yan Tan, Xin Wan
INTRODUCTION: Acute kidney injury (AKI) is a common complication in patients with community-acquired pneumonia (CAP) and negatively affects both short-term and long-term prognosis in patients with CAP. However, no study has been conducted on developing a clinical tool for predicting AKI in CAP patients. Therefore, this study aimed to develop a predictive tool based on a dynamic nomogram for AKI in CAP patients. METHODS: This retrospective study was conducted from January 2014 to May 2017, and data from adult inpatients with CAP at Nanjing First Hospital were analysed...
September 2023: BMJ Open Respiratory Research
Anand Vardhan, Devina Singh, Shalini Tripathi, Mala Kumar, Atin Singhai
A boy presented with cough, breathlessness for 1 month, fever for 1 week with similar previous episodes without hospitalisation. He had generalised muscle wasting, acute chronic malnutrition and required immediate ventilation. Provisional diagnosis of recurrent pneumonia with failure to thrive was made. As serial chest X-rays showed recurrent lung collapse, congenital lung anomalies were ruled out. 2D-echocardiography showed pulmonary arterial hypertension. Workup for congenital immunodeficiency and cystic fibrosis was negative...
September 22, 2023: BMJ Case Reports
Cai Hui, Qiang Yu, Bing Liu, Min Zhu, Yuyang Long, Dongsheng Shen
Landfills are reservoirs of antibiotic resistance genes (ARGs) and pathogens, and humans are exposed to these pollutants during extensive excavation of old landfills. However, the microbial contamination risk of landfilled waste with different ages has not been assessed. In this study, human bacterial pathogens (HBPs), ARGs, and virulence factors (VFs) were systematically determined using metagenomic analysis. Results showed that the abundance of HBPs, ARGs, and VFs increased with landfill age, the percentage of HBPs in refuse with deposit age of 10-12 years (Y10) was 23...
September 20, 2023: Waste Management
Rebekah N Duffin, Philip C Andrews
A series of dimethylgallium quinolinolate [GaMe2 L] (L = 5-chloroquinolinolate, 5, 7-dichloroquinolinolate, 5, 7-dibromoquinolinolate or 5, 7-doiodoquinolinolate) complexes, shown previously to be active toward the Leishmania parasite, have been studied for their antibacterial activity toward a reference and drug resistant strain of Klebsiella pneumoniae (KP). The assays were conducted in standard iron-rich LB media and in the iron depleted RPMI and RPMI-HS media to better understand the effect of Fe concentration on the activity of the Ga complexes...
September 17, 2023: Journal of Inorganic Biochemistry
Hélène M Roux, Amira Marouf, Jacques Dutrieux, Bénédicte Charmeteau-De Muylder, Suzanne Figueiredo-Morgado, Véronique Avettand-Fenoel, Pelagia Cuvelier, Cécile Naudin, Fatma Bouaziz, Guillaume Geri, Anne Couëdel-Courteille, Pierre Squara, Stefano Marullo, Rémi Cheynier
Thymic activation improves the outcome of COVID-19 patients with severe pneumonia. The rs2204985 genetic polymorphism within the TCRA-TCRD locus, which affects thymic output in healthy individuals, was found here to modify SARS-CoV-2-specific immunity and disease severity in COVID-19 patients with severe pneumonia. Forty patients with severe COVID-19 pneumonia were investigated. The GG genotype at the rs2204985 locus was associated, independently of age and sex, with stronger and long-lasting anti-SARS-CoV-2 helper and cytotoxic T cell responses 6 months after recovery...
September 22, 2023: Science Advances
Ercüment Öztürk, Sencer Ganidağlı, Zeynel Abidin Öztürk
OBJECTIVES: We aimed to investigate the risk factors of colistin-associated nephrotoxicity in patients older than 65 years treated in the palliative care unit. METHODS: 119 palliative care patients who received intravenous colistimethate for at least 7 days were included in the study. Estimated glomerular filtration rate (GFR) was calculated using the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) 2021 equation. Data were obtained from the hospital information system...
September 22, 2023: Current Medical Research and Opinion
Mingjun Liang, Bin Xiao, Lidan Chen, Xiaoyan Huang, Jinchao Li, Zhenzhan Kuang, Xinping Chen, Xiuna Huang, Zhaohui Sun, Linhai Li
Klebsiella pneumoniae carbapenemase (KPC) is a crucial enzyme that causes carbapenem resistance in Enterobacterales, and infections by these "superbugs" are extremely challenging to treat. Therefore, there is a pressing need for a rapid and accurate KPC detection test to control the prevalence of carbapenem-resistant Enterobacterales (CREs). In this study, we established a novel method for detection of blaKPC , the gene responsible for encoding KPC, based on a recombinase polymerase amplification (RPA) and a CRISPR/Cas13a reaction coupled to fluorophore activation (termed RPA-Cas13a assay)...
September 22, 2023: Current Microbiology
Kalyani Borde, M A Kareem, Ratna Mani Sharma, S Manick Dass, Vedantham Ravi, Dilip Mathai
Cefiderocol (FDC), a novel siderophore drug, is active against Gram-negative bacteria producing carbapenemases, including metallo-beta-lactamases. The objective of this study is to compare the in vitro activity of FDC with ceftazidime-avibactam (CZA), CZA/aztreonam (AT) combination, and colistin (CST), in clinical isolates of meropenem-resistant (MER-R) Klebsiella pneumoniae . From the 2,052 clinical specimens submitted for culture testing, 245 K . pneumoniae isolates were recovered within a 6-month period in 2021...
September 22, 2023: Microbiology Spectrum
Joaquin Burgos, Yannick Hoyos-Mallecot, Carles Ferre-Losa, Maider Arando, Arnau Monforte, Tomas Pumarola, Ibai Los-Arcos, Vicenç Falcó
To assess the feasibility of oral fosfomycin-tromethamine (FT) for the management of acute bacterial prostatitis (ABP) caused by multidrug-resistant (MDR) Enterobacterales. An observational study of adult patients diagnosed with ABP from Vall d'Hebron University Hospital (Barcelona, Spain), treated with oral FT. The primary outcome was clinical cure defined as symptom relief at the control visit, 2-4 weeks post-end of treatment. Secondary outcomes included microbiological cure, relapse, and adverse events related to the treatment...
September 22, 2023: Microbiology Spectrum
Laricca Y London, Chae Hee Lim, Jennifer L Modliszewski, Nazema Y Siddiqui, Tatyana A Sysoeva
Here, we present the draft genome sequences of Lactobacillus delbrueckii and Klebsiella pneumoniae , both isolated from the urinary bladder of an asymptomatic post-menopausal female patient with a diagnosis of recurrent urinary tract infections. These genomes will facilitate analyses of interbacterial interactions in the urinary microbiome.
September 22, 2023: Microbiology Resource Announcements
Antonia R Bass, Marisa S Egan, Jasmine Alexander-Floyd, Natasha Lopes Fischer, Jessica Doerner, Sunny Shin
The inflammasome is essential for host defense against intracellular bacterial pathogens, including Legionella pneumophila , the causative agent of the severe pneumonia Legionnaires' disease. Inflammasomes recruit and activate caspases, which promote IL-1 family cytokine release and pyroptosis to restrict infection. In mice, interferon (IFN) signaling promotes inflammasome responses against L. pneumophila and other bacteria , in part, through inducing a family of IFN-inducible GTPases known as guanylate-binding proteins (GBPs)...
September 22, 2023: MBio
Ryan S McCool, Maryam Musayev, Sabrina M Bush, Alexandrine Derrien-Colemyn, Cory M Acreman, Daniel Wrapp, Tracy J Ruckwardt, Barney S Graham, John R Mascola, Jason S McLellan
Respiratory syncytial virus (RSV) causes tens of millions of acute lower respiratory tract infections and millions of hospital admissions globally each year. An antibody repertoire analysis of a human vaccine trial investigating a prefusion-stabilized RSV fusion (F) glycoprotein antigen (DS-Cav1) identified several neutralizing antibody public clonotypes (PCs) in multiple vaccine recipients. Of these, PCs 1 and 2 were found in six out of six and five out of six vaccine recipients, respectively. Whereas PC1 was shown to bind antigenic site V, the binding site and mechanism of action for PC2 were not defined...
September 22, 2023: Journal of Virology
Francesco Durazzi, Maria Diletta Pezzani, Fabiana Arieti, Omar Simonetti, Lorenzo Maria Canziani, Elena Carrara, Lorenzo Barbato, Francesco Onorati, Daniel Remondini, Evelina Tacconelli
Infection control programs and antimicrobial stewardship have been proven effective in reducing the burden of diseases due to multidrug-resistant organisms, but quantifying the effect of each intervention is an open issue. For this aim, we propose a model to characterize the effect of interventions at single ward level. We adapted the Ross-Macdonald model to describe hospital cross-transmission dynamics of carbapenem resistant Klebsiella pneumoniae (CRKP), considering healthcare workers as the vectors transmitting susceptible and resistant pathogens among admitted patients...
September 22, 2023: Scientific Reports
Asawari Korde, Maria Haslip, Prachi Pednekar, Alamzeb Khan, Maurizio Chioccioli, Sameet Mehta, Francesc Lopez-Giraldez, Santos Bermejo, Mauricio Rojas, Charles Dela Cruz, Michael A Matthay, Jordan S Pober, Richard W Pierce, Shervin S Takyar
Acute lung injury (ALI) and its most severe form, acute respiratory distress syndrome (ARDS), cause severe endothelial dysfunction in the lung, and vascular endothelial growth factor (VEGF) is elevated in ARDS. We found that the levels of a VEGF-regulated microRNA, microRNA-1 (miR-1), were reduced in the lung endothelium after acute injury. Pulmonary endothelial cell-specific (EC-specific) overexpression of miR-1 protected the lung against cell death and barrier dysfunction in both murine and human models and increased the survival of mice after pneumonia-induced ALI...
September 22, 2023: JCI Insight
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