GERMS最新文献

{"title":"Bacterial species associated with peri-implant disease - a literature review.","authors":"Mihai Săndulescu, Valentin Daniel Sîrbu, Ion Alexandru Popovici","doi":"10.18683/germs.2023.1405","DOIUrl":"10.18683/germs.2023.1405","url":null,"abstract":"<p><p>Peri-implantitis is a pathological condition in dental medicine that manifests as an inflammatory process affecting the tissues surrounding dental implants. Peri-implantitis occurs when the soft and hard tissues surrounding these implants become inflamed, leading to progressive destruction of the supporting bone. The etiology of peri-implantitis is multifactorial, involving microbial, host-related, and environmental factors. Microbial involvement in peri-implantitis can be explained either by direct in-situ virulence activation leading to pathogenicity, or by induction of low-grade chronic immune activation, leading to long-term persistence of a pro-inflammatory status. Understanding peri-implantitis is pivotal in maintaining the long-term success of dental implants and improving patient outcomes in implant-supported restorations. Recognizing the etiological factors, including particular bacterial species, genetic predispositions, and environmental influences, is very important for devising effective preventive strategies and targeted interventions.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10866163/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139742221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Endophthalmitis caused by <i>Enterococcus casseliflavus:</i> a systematic review of literature.","authors":"Stylianos A Kandarakis, Nikolaos Spernovasilis, Ilias Georgalas, Michalis Mendris, Constantinos Tsioutis, Aris P Agouridis","doi":"10.18683/germs.2023.1404","DOIUrl":"10.18683/germs.2023.1404","url":null,"abstract":"<p><strong>Introduction: </strong><i>Enterococcus casseliflavus</i> is a rare pathogen in human infections, despite being widely distributed in natural environments. This systematic review aims to evaluate the evidence related to endophthalmitis caused by <i>E. casseliflavus</i>.</p><p><strong>Methods: </strong>A thorough search of PubMed, PubMed Central, and Scopus databases was conducted, covering the period up to October 2022.</p><p><strong>Results: </strong>A total of 53 records were identified, with 8 studies reporting a total of 21 cases meeting the inclusion criteria. Among these studies, 7 described isolated case reports, while 1 study described 14 cases. The overall quality of the reports was good, as all articles were determined to have low risk of bias. Vancomycin susceptibility was reported in only one case of isolated case reports, while the remaining cases were all vancomycin resistant. With regard to management, in most cases intravenous ampicillin and linezolid were administered, while only one study reported administration of vancomycin.</p><p><strong>Conclusions: </strong>Ophthalmologists should be aware of the potential for <i>E. casseliflavus</i> to cause endophthalmitis infections and the challenges associated with its intrinsic resistance to vancomycin.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10866162/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139742278","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dental pathologies of endodontic origin and subsequent bacterial involvement - a literature review.","authors":"Alexandru Gliga, Mihai Săndulescu, Oana Amza, Ruxandra Stănescu, Marina Imre","doi":"10.18683/germs.2023.1407","DOIUrl":"10.18683/germs.2023.1407","url":null,"abstract":"<p><p>Dental pathologies of endodontic origin are varied in nature, and include infectious and non-infectious causes. Through this review, we aim to provide a deeper understanding of the role of bacterial involvement and in the pathogenesis of endodontic pathologies, by reviewing the relevant literature on the most common bacterial species involved, and their capacity to organize as biofilms. Furthermore, we focus on the most important recent updates in the management of endodontic infections, from a multidisciplinary perspective.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10866160/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139742223","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Erratum.","authors":"","doi":"10.18683/germs.2023.1411","DOIUrl":"https://doi.org/10.18683/germs.2023.1411","url":null,"abstract":"<p><p>[This corrects the article DOI: 10.18683/germs.2022.1351.].</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10866159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139742280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Twins with meningitis due to <i>Neisseria meningitidis</i>.","authors":"Gülsüm İclal Bayhan, Saliha Kanık Yüksek, Latife Güder, Hatice Kübra Konca, Seval Özen, Nilay Çöplü, Nuriye Ünal Şahin","doi":"10.18683/germs.2023.1403","DOIUrl":"10.18683/germs.2023.1403","url":null,"abstract":"<p><strong>Introduction: </strong>The incidence of invasive meningococcal disease is highest in infants and young children.</p><p><strong>Case report: </strong>Twin infants diagnosed two days apart with meningitis due to <i>N. meningitidis</i> serogroup B are presented.</p><p><strong>Conclusions: </strong>There has never been a report of concurrent meningococcal meningitis in twin brothers. We wanted to highlight the high likelihood of meningococcal transmission through household contacts and the importance of antibiotic prophylaxis and meningococcal vaccination recommendations for close contacts of these cases.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10866170/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139742285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Descending necrotizing mediastinitis caused by retro-pharyngeal <i>Eggerthia catenaformis</i> infection.","authors":"Alessandro Graziani, Maria Vittoria Tamburini, Francesco Congestrì, Ludovico Graziani, Maria Giulia Sama, Guido Caroli, Riccardo Spaggiari","doi":"10.18683/germs.2023.1394","DOIUrl":"10.18683/germs.2023.1394","url":null,"abstract":"<p><strong>Introduction: </strong><i>Eggerthia catenaformis</i>, a non-spore-forming anaerobic Gram-positive bacillus component of the human fecal microbiota has rarely been reported in human diseases. In almost every case described in current literature to date, dental diseases (abscesses, periodontitis, or caries), are the most common source of the infection which extends to the brain, cervical spaces, pulmonary parenchyma, the pleural cavity, the abdominal wall, and the abdominal cavity.</p><p><strong>Case report: </strong>An 82-year-old male Caucasian patient was admitted to our Emergency Department (ED) with a painless, right submandibular mass, dyspnea, and inspiratory stridor. A CT scan of the head, neck, and chest with intravenous contrast material revealed a retrotonsillar fluid collection. Air bubbles and minimal fluid were present from the right sub-mandibular area to the lower mediastinum between the spine, the descending thoracic aorta, and the trachea. The patient underwent surgical treatment and a broad-spectrum antibiotic. The retropharyngeal fluid collection culture showed the presence of <i>Eggerthia catenaformis</i>. After a first period in the Intensive Care Unit, he was admitted to a Step-Down Unit (SDU) where he underwent respiratory weaning, motor rehabilitation, and gradual oral feeding resumption. At discharge, the patient maintained the tracheal cannula as he still had impaired swallowing of solid foods.</p><p><strong>Conclusions: </strong>Here we report the first case of descending necrotizing mediastinitis in a patient with a retropharyngeal abscess, in the absence of dental diseases.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10748840/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139038011","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A rare case of <i>Sphingomonas paucimobilis</i> ventriculitis.","authors":"James B Doub, Joel V Chua","doi":"10.18683/germs.2023.1391","DOIUrl":"10.18683/germs.2023.1391","url":null,"abstract":"<p><strong>Introduction: </strong>Nosocomial ventriculitis is a severe infection that habitually plagues neurological intensive care units. It is usually associated with external ventricular drains. Unfortunately, classic cerebral spinal fluid parameters are less specific and sensitive compared to community acquired meningitis. This is in part secondary to indolent bacteria commonly infecting external ventricular drains leading to ventriculitis.</p><p><strong>Case report: </strong>Herein, a rare case of <i>Sphingomonas paucimobilis</i> ventriculitis in an immunocompetent host is reported. The patient had classic symptoms of ventriculitis, but her cerebral spinal fluid parameters were benign and initial cultures were negative. Consequently, treatment was tailored to an assumed respiratory infection only to have recurrence of her symptoms. Repeat analysis of her cerebral spinal fluid was again benign, but her cerebral spinal fluid culture grew S. <i>paucimobilis</i>. Subsequently, the patient was treated with cefepime, which resolved her symptoms. She completed a two-week course and has had no recurrence of her infection.</p><p><strong>Conclusions: </strong>This case reinforces the need for clinicians to have heightened awareness of this emerging pathogen, its antibiotic resistance patterns, and the unique composition of this bacterium's cell wall which has ramifications on disease presentation.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10748845/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139038008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of neutropenic sepsis during the eradication phase with co-trimoxazole in patients with melioidosis: two case reports.","authors":"Jayaweera Arachchige Asela Sampath Jayaweera, Gerard Ranasinghe","doi":"10.18683/germs.2023.1393","DOIUrl":"10.18683/germs.2023.1393","url":null,"abstract":"<p><strong>Introduction: </strong><i>Burkholderia pseudomallei</i> is the bacterium that causes melioidosis. It is mostly a tropical disease, and particularly common in Southeast Asia and northern Australia. The intensive intravenous phase and the oral prolonged eradication phase are the two phases of melioidosis treatment. The current recommended treatment for melioidosis eradication is oral co-trimoxazole (TMP/SMX).</p><p><strong>Case report: </strong>Two patients were diagnosed with <i>B. pseudomallei</i> bacteremia without a focus and were treated with oral TMP/SMX with folic acid during the eradication phase. Both presented with neutropenic sepsis with pneumonia and pyelonephritis at days 48 and 45 following TMP/SMX 320/1600 mg q12h (4 tablets) and in both of them, the folic acid compliance was poor. One patient died and the other survived following intensive treatment for neutropenia. At the presentation following neutropenic sepsis among both patients, the red blood cells and platelets were within normal limits. Both patients were on a high dose of TMP/SMX, as both were within 40-60 kg of body weight the ideal TMP/SMX dose would be 240/1200 mg q12h (3 tablets). Pancytopenia caused by TMP/SMX can frequently develop gradually over time. Alternately, it can develop rapidly and swiftly escalate to fulminant sepsis, disseminated intravascular coagulation, and fast hemolysis. However, the development of isolated neutropenia is rarely described in the literature.</p><p><strong>Conclusions: </strong>Prolonged use of TMP/SMX is important to eradicate <i>B. pseudomallei</i> and always the possibility of rare adverse effects has to be considered. Always weight-based TMP-SMX dosing has to be encouraged with need to ensure the compliance of folic acid. During the eradication phase, continuous monitoring of blood cell lines with weekly full blood count would be essential to identify neutropenia in advance.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10748846/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139038012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bacteremia and antimicrobial resistance pattern of uropathogens causing febrile urinary tract infection in a Pediatric University Hospital.","authors":"Hassan Heshmat, Marwa Meheissen, Ahmed Farid, Eman Hamza","doi":"10.18683/germs.2023.1387","DOIUrl":"10.18683/germs.2023.1387","url":null,"abstract":"<p><strong>Introduction: </strong>Febrile urinary tract infections (UTIs) in children are among the most serious bacterial infections. Inadequate treatment can lead to kidney scarring and permanent kidney damage. Eight to ten percent of children with UTIs could have concomitant bacteremia. The study aimed to estimate the prevalence of UTI-associated bacteremia and identify common organisms causing UTIs and their antimicrobial susceptibility patterns to help guide empiric antimicrobial therapy.</p><p><strong>Methods: </strong>The current study was conducted over a 6-month period on children admitted with febrile UTIs at Alexandria University Children's Hospital. Blood and urine samples were collected for culture and antimicrobial susceptibility.</p><p><strong>Results: </strong>A total of 103 children with a median age of 12 months (IQR 6.0-24.0) were included in the study. Concomitant bacteremia was present in 63.1% (n=65). The median temperature of 38.40°C (IQR 38.15-38.60) and the median creatinine level of 0.18 mg/dL (IQR 0.14-0.25) were significantly higher in the bacteremic group compared to the non-bacteremic group (p=0.005, p=0.034, respectively). <i>E. coli</i> (n=51; 49.5%) and <i>Klebsiella pneumoniae</i> (n=30; 29.1%) were the most common isolated organisms. Most (n=68; 66%) of the isolated organisms were multidrug-resistant (MDR), followed by extensively drug-resistant (XDR) (n=16; 15.5%), and pan-drug-resistant (PDR) organisms (n=1; 1%). <i>E. coli</i> showed lower resistance to gentamicin and ceftriaxone (9.8 % and 13.7%, respectively).</p><p><strong>Conclusions: </strong><i>E. coli</i> remains the most important UTI pathogen. Ceftriaxone and gentamicin are good empiric options for febrile UTIs in our hospital.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10748837/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139038010","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbiome analysis of bile samples in patients with choledocholithiasis and hepatobiliary disorders.","authors":"Masoumeh Azimirad, Amir Sadeghi, Nazanin Hosseinkhan, Seyedeh Zohre Mirbagheri, Masoud Alebouyeh","doi":"10.18683/germs.2023.1390","DOIUrl":"10.18683/germs.2023.1390","url":null,"abstract":"<p><strong>Introduction: </strong>The involvement of bacteria in the pathogenesis of biliary tract disease is largely unknown. In this study, we investigated the microbiota of the biliary tissue among adult patients with choledocholithiasis during endoscopic retrograde cholangiography (ERCP).</p><p><strong>Methods: </strong><i>16S rDNA</i> sequencing of bile samples, culture, and data of the medication history, underlying diseases, and liver function tests were used for the interpretation of differences in the composition of detected bacterial taxa.</p><p><strong>Results: </strong>The four most common phyla in the bile samples included <i>Proteobacteria</i>, <i>Firmicutes</i>, <i>Actinobacteria,</i> and <i>Bacteroidetes</i>. Infection with anaerobic and microaerophilic bacteria showed host specificity, where <i>Fusobacterium</i>, <i>Prevotella</i>, <i>Veillonella</i>, <i>Propionibacterium</i>, <i>Gemella</i>, and <i>Helicobacter</i> coexist in the same patients. <i>Clostridium</i> and <i>Peptoclostridium</i> spp. were detected in 80% and 86% of the patients, where the highest relative abundance rates were detected in patients with elevated alkaline phosphatase (ALP) levels and leukocytosis, respectively. Higher diversity in the bacterial population was detected in patients with common bile duct (CBD) stone, in which the richness of an unclassified member of <i>Alphaproteobacteria</i> plus <i>Helicobacter</i>, <i>Enterobacter</i>/<i>Cronobacter</i> spp., <i>Sphingomonas</i>, <i>Prevotella</i>, <i>Fusobacterium</i> and <i>Aeromona</i>s were detected.</p><p><strong>Conclusions: </strong>Our findings suggested correlations between the presence and relative abundance of several bacterial taxa and CBD stone formation and the effect of medication and underlying diseases on the bile microbial communities. A study on a higher number of bile samples from patients compared with the control group could reveal the role of these bacteria in the pathogenesis of biliary tract disease.</p>","PeriodicalId":45107,"journal":{"name":"GERMS","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10748839/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139038047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}