相关实验视频
Updated: Jul 16, 2026

04:41
Knee Arthrocentesis in Adults
Published on: February 25, 2022
在败血性关节炎中的大肠杆菌:流行率和抗生素敏感性模式
Masroora Ali Khan1,2, Muhammad Kamran Taj1, Zahid Khan3
1Department of Microbiology, Center for Advanced Studies in Vaccinology and Biotechnology, University of Balochistan, Quetta, Pakistan.
Iranian journal of microbiology
|May 7, 2025
概括
由大肠杆菌引起的败血性关节炎是罕见但严重的. 这项研究发现巴基斯坦的大肠杆菌菌株对常见抗生素有抗性,强调需要仔细选择治疗方法.
科学领域:
- 微生物学 微生物学
- 传染性疾病 传染性疾病
- 整形外科 整形外科 整形外科
背景情况:
- 败血性关节炎 (SA) 是一种严重的骨科疾病,通常是由细菌引起的.
- 在SA中大肠杆菌 (大肠杆菌) 感染不常见,但与糟糕的结果有关.
- 这项研究调查了在巴基斯坦奎达的SA患者中大肠杆菌的流行率和抗生素耐药性.
研究的目的:
- 为了确定大肠杆菌在败血性关节炎病例中的发生情况.
- 分析从SA患者中分离出的大肠杆菌菌株的抗生素耐药性模式.
- 为了将大肠杆菌感染与SA中的临床和血液学参数相关联.
主要方法:
- 一项涉及2020年3月至2023年12月的220名SA患者的横截面研究.
- 对关节吸血剂和血液样本进行分析,用于微生物和血液学检查.
- 使用聚合酶链反应 (PCR) 和序列分析识别大肠杆菌,并进行抗生素敏感性测试.
主要成果:
- 大肠杆菌在5.45%的SA样本中被发现,男性和年龄在41-60岁的患者的患病率更高.
- 观察到白细胞 (WBC),C反应蛋白 (CRP) 和红细胞沉积率 (ESR) 的升高,特别是在大肠杆菌阳性病例中.
- 隔离的大肠杆菌菌株对多种常见的抗生素具有显著的耐药性,包括阿莫西西林, ceftriaxone 和 gentamicin.
结论:
- 该研究确定了大肠杆菌在奎达的一组败血性关节炎病例中的致病原体.
- 在大肠杆菌菌株中显著的抗生素耐药性需要仔细选择抗生素以进行有效的SA治疗.
- 这些发现强调了局部抗生素图的重要性,以指导性关节炎的治疗策略.
相关概念视频
Acute Pyelonephritis II: Diagnostic Studies and Management
Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
Urine Studies II: Urine Culture and Sensitivity Test
A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
Development of Antibiotic Resistance
Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
Bacterial Gastroenteritis
Bacterial gastroenteritis, characterized by diarrhea, abdominal cramps, and vomiting, is often caused by ingestion of contaminated food or water and is frequently associated with pathogenic Escherichia coli strains. These microbes exploit two principal mechanisms to inflict disease.Shiga toxin–producing E. coli, also referred to as STEC—notably O157:H7—release Shiga toxins that target ribosomes, blocking protein synthesis. The B subunit of the toxin binds the host glycolipid receptor...
Mechanism of Antibiotic Resistance in MRSA
Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...
Clinical Significance of Antibiotic Resistance
Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...

