Whelan Shane, Lucey Brigid, Finn Karen
Department of Biological Sciences, Munster Technological University, Bishopstown, T12 P928 Cork, Ireland.
Department of Analytical, Biopharmaceutical and Medical Sciences, Atlantic Technological University Galway City, Dublin Road, H91 T8NW Galway, Ireland.
Microorganisms. 2023 Aug 28;11(9):2169. doi: 10.3390/microorganisms11092169.
Urinary tract infections (UTIs) are among the most common bacterial infections, especially among women and older adults, leading to a significant global healthcare cost burden. Uropathogenic (UPEC) are the most common cause and accounts for the majority of community-acquired UTIs. Infection by UPEC can cause discomfort, polyuria, and fever. More serious clinical consequences can result in urosepsis, kidney damage, and death. UPEC is a highly adaptive pathogen which presents significant treatment challenges rooted in a complex interplay of molecular factors that allow UPEC to evade host defences, persist within the urinary tract, and resist antibiotic therapy. This review discusses these factors, which include the key genes responsible for adhesion, toxin production, and iron acquisition. Additionally, it addresses antibiotic resistance mechanisms, including chromosomal gene mutations, antibiotic deactivating enzymes, drug efflux, and the role of mobile genetic elements in their dissemination. Furthermore, we provide a forward-looking analysis of emerging alternative therapies, such as phage therapy, nano-formulations, and interventions based on nanomaterials, as well as vaccines and strategies for immunomodulation. This review underscores the continued need for research into the molecular basis of pathogenesis and antimicrobial resistance in the treatment of UPEC, as well as the need for clinically guided treatment of UTIs, particularly in light of the rapid spread of multidrug resistance.
尿路感染(UTIs)是最常见的细菌感染之一,在女性和老年人中尤为常见,给全球医疗保健带来了巨大的成本负担。尿路致病性大肠杆菌(UPEC)是最常见的病因,占社区获得性尿路感染的大多数。UPEC感染可引起不适、多尿和发热。更严重的临床后果可能导致尿脓毒症、肾脏损伤和死亡。UPEC是一种高度适应性的病原体,由于分子因素的复杂相互作用,它带来了重大的治疗挑战,这些分子因素使UPEC能够逃避宿主防御、在尿路中持续存在并抵抗抗生素治疗。本综述讨论了这些因素,包括负责黏附、毒素产生和铁摄取的关键基因。此外,还阐述了抗生素耐药机制,包括染色体基因突变、抗生素失活酶、药物外排以及移动遗传元件在其传播中的作用。此外,我们对新兴的替代疗法进行了前瞻性分析,如噬菌体疗法、纳米制剂和基于纳米材料的干预措施,以及疫苗和免疫调节策略。本综述强调,持续需要研究UPEC治疗中发病机制和抗菌耐药性的分子基础,以及临床指导下的UTIs治疗的必要性,特别是鉴于多重耐药性的迅速传播。
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