Publications by authors named "Frieder Fuchs"

Article Synopsis
  • - The study aimed to identify and characterize drug-resistant bacterial pathogens from a war-injured patient in Ukraine by analyzing samples from various body sites during hospital admission screening.
  • - Researchers performed bacterial identification, susceptibility tests, and genetic sequencing to reveal seven distinct Gram-negative bacteria, all resistant to carbapenems, with some also resistant to other crucial antibiotics but susceptible to colistin.
  • - The findings highlighted the presence of diverse clones of multidrug-resistant pathogens with various resistance genes, underscoring the need for effective infection control measures in healthcare settings.
View Article and Find Full Text PDF
Article Synopsis
  • Fungal infections pose significant health risks, especially for individuals with HIV in tropical regions, but data on their prevalence is limited, particularly in Ghana.
  • The study investigates the presence of specific fungi in the gastrointestinal tracts of Ghanaian patients using real-time PCR assays to analyze stool samples from both HIV-positive individuals and controls.
  • Results showed that the targeted fungi were unlikely to be part of the gut microbiota in these populations, suggesting that their detection should not be seen as normal flora and has implications for public health screening strategies.
View Article and Find Full Text PDF

Here, we report the simultaneous isolation of from blood cultures and from a skin ulcer in an elderly woman who suffered from atopic dermatitis and psoriasis and developed acute cellulitis of both arms requiring hospital treatment. To the best of our knowledge, has not been previously reported to cause invasive infections in humans. This case highlights how chronic diseases and older age increase the susceptibility to bacterial infections with environmental bacteria of low virulence.

View Article and Find Full Text PDF

is a ubiquitous genus of amoebae that can act as opportunistic parasites in both humans and animals, causing a variety of ocular, nervous and dermal pathologies. Despite advances in therapy, the management of patients with infections remains a challenge for health services. Therefore, there is a need to search for new active substances against Acanthamoebae.

View Article and Find Full Text PDF

Among the pathogenic free-living amoebae (FLA), is the etiological agent of a fatal disease known as primary amoebic meningoencephalitis (PAM). Once infection begins, the lesions generated in the central nervous system (CNS) result in the onset of symptoms leading to death in a short period of time. Currently, there is no standardized treatment against the infection, which, due to the high virulence of the parasite, results in a high case fatality rate (>97%).

View Article and Find Full Text PDF

Objectives: To analyse carbapenemases in Proteus mirabilis and assess the performance of carbapenemase detection assays.

Methods: Eighty-one clinical P. mirabilis isolates with high-level resistance at least to ampicillin (>32 mg/L) or previous detection of carbapenemases were selected and investigated by three susceptibility testing methods (microdilution, automated susceptibility testing, and disk diffusion), six phenotypic carbapenemase assays (CARBA NP, modified carbapenemase inactivation method [CIM], modified zinc-supplemented CIM, simplified CIM, faropenem, and carbapenem-containing agar), two immunochromatographic assays, and whole-genome sequencing.

View Article and Find Full Text PDF

Background: Pancreatic ductal adenocarcinoma (PDAC) remains one of the most lethal cancers. Given the currently limited therapeutic options, the definition of molecular subgroups with the development of tailored therapies remains the most promising strategy. Patients with high-level gene amplification of urokinase plasminogen activator receptor () have an inferior prognosis.

View Article and Find Full Text PDF

Aerococcus urinae and Aerococcus sanguinicola have been increasingly recognized as causative agents of urinary tract infection (UTI) during the last decade. Nitroxoline achieves high urinary concentrations after oral administration and is recommended in uncomplicated UTI in Germany, but its activity against spp. is unknown.

View Article and Find Full Text PDF

Objectives: The old antimicrobial nitroxoline is approved to treat urinary tract infection (UTI) and is currently rediscovered for treatment of drug resistant pathogens. Mycobacteria of the Mycobacterium abscessus complex (MYABS) are rapid-growing nontuberculous mycobacteria that are associated with difficult to treat infections of the lungs in patients with pulmonary disorders such as cystic fibrosis. In this study we assessed the in vitro activity of nitroxoline against molecularly characterized drug-resistant MYABS isolates from clinical samples to address potential repurposing of nitroxoline in difficult-to-treat MYABS infection.

View Article and Find Full Text PDF

Colonization and infection with bacteria with acquired antibiotic resistance are among the risks for soldiers on international deployments. Enterobacterales with resistance against third-generation cephalosporines are amongst the most frequently imported microorganisms. To contribute to the scarcely available epidemiological knowledge on deployment-associated resistance migration, we assessed the molecular epidemiology of third-generation cephalosporine-resistant isolated between 2007 and 2016 from German soldiers after deployments, with a particular focus on the African Sahel region.

View Article and Find Full Text PDF

Introduction: Candida auris is an emerging pathogen in health care-associated infections. In contrast to many other countries with rising numbers of C. auris, only seven cases have been reported in Germany from 2015 to 2017, mostly from patients who received prior medical treatment abroad.

View Article and Find Full Text PDF
Article Synopsis
  • Antimycobacterial infections face treatment challenges due to inherent and emerging drug resistance, prompting the need for new therapies.
  • Nitroxoline, an older antibiotic repurposed for UTIs, showed promising activity against various clinical mycobacterial isolates in a study conducted at the University Hospital of Cologne.
  • The study found that nitroxoline demonstrated effective minimum inhibitory concentrations (MICs) against multidrug-resistant strains, suggesting it could be a potential treatment option for tuberculosis in the context of rising drug resistance.
View Article and Find Full Text PDF

Background: With increasing resistance to common antibiotics the treatment of urinary tract infections has become challenging and alternative therapeutic options are needed. In the present study, we evaluate the activity of three older and less frequently used antibiotics against MDR Enterobacterales.

Methods: Susceptibility of mecillinam, temocillin and nitroxoline was assessed in Enterobacterales isolated from urinary specimens with elevated MICs of third-generation cephalosporins.

View Article and Find Full Text PDF

Infections by drug-resistant fungi are increasingly reported worldwide; however, only few novel antifungals are being developed. The old antimicrobial nitroxoline is currently repurposed for oral treatment of bacterial urinary tract infections (UTI). Previously, antifungal activity has been demonstrated and in contrast to many antifungals nitroxoline reaches high urinary concentrations.

View Article and Find Full Text PDF

Objectives: Many factors influence the outcome of in vitro antifungal susceptibility testing (AFST), including endpoint definition, inoculum sizes, time and temperature of incubation, and growth medium used. This European Confederation of Medical Mycology (ECMM) Excellence center driven study investigated multiple colony testing (MCT) of five separate colonies to investigate the prevalence of polyresistance (PR), defined as heterogeneous MICs from a same-species Candida culture irrespective of the underlying resistance mechanism.

Methods: Candida spp.

View Article and Find Full Text PDF

Background: The old antimicrobial nitroxoline is currently repurposed for oral treatment of uncomplicated urinary tract infections (UTIs).

Objectives: To investigate the in vitro activity of nitroxoline against carbapenem-resistant Acinetobacter baumannii (CRAb).

Methods: From an international collection of previously well-characterized clinical A.

View Article and Find Full Text PDF

Objectives: This study aimed to investigate whether neutropenia influenced mortality and long-term outcomes of Staphylococcus aureus bloodstream (SAB) infection.

Methods: Data from two prospective, multicentre cohort studies (INSTINCT and ISAC) conducted at 20 tertiary care hospitals in six countries between 2006 and 2015 were analyzed. Neutropenic and severely neutropenic patients (defined by proxy of total white blood cell count <1000/μl and <500/μl, respectively, at onset of SAB infection) were compared with a control group using a propensity score model and overlapping weights to adjust for baseline characteristics.

View Article and Find Full Text PDF

Objectives: To investigate the in vitro activity of nitroxoline against a molecularly characterized collection of clinical Candida auris isolates.

Methods: Thirty-five clinical isolates of C. auris from diverse sources representing all five different C.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates COVID-19-associated pulmonary aspergillosis (CAPA), focusing on fungal infections caused by Aspergillus fumigatus in patients from North Rhine-Westphalia, Germany.
  • Researchers analyzed the genomes of four CAPA isolates, finding that these did not significantly differ from the reference strain Af293 concerning virulence-related genes.
  • One isolate, designated D, exhibited more virulence than the others and had more mutations linked to increased virulence, enhancing our understanding of CAPA's genomic and phenotypic traits.
View Article and Find Full Text PDF

Background: Staphylococcus aureus bloodstream infection (SAB) is a common, life-threatening infection. The impact of immunosuppressive agents on the outcome of patients with SAB is incompletely understood.

Methods: Data from 2 large prospective, international, multicenter cohort studies (Invasive Staphylococcus aureus Infections Cohort [INSTINCT] and International Staphylococcus aureus Collaboration [ISAC]) between 2006 and 2015 were analyzed.

View Article and Find Full Text PDF

: To investigate the susceptibility of carbapenemase-producing Enterobacterales (CPE) to mecillinam based on the recently updated European Committee on Antimicrobial Susceptibility Testing (EUCAST) breakpoints for uncomplicated Urinary Tract Infection (uUTI). : The challenge collection consisted of 105 molecularly characterized Enterobacterales [ spp. ( = 49), ( = 30), ( = 13), ( = 9), ( = 3), and ( = 1)].

View Article and Find Full Text PDF

The ongoing global pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the coronavirus disease 2019 (COVID-19) first described from Wuhan, China. A subset of COVID-19 patients has been reported to have acquired secondary infections by microbial pathogens, such as fungal opportunistic pathogens from the genus . To gain insight into COVID-19 associated pulmonary aspergillosis (CAPA), we analyzed the genomes and characterized the phenotypic profiles of four CAPA isolates of obtained from patients treated in the area of North Rhine-Westphalia, Germany.

View Article and Find Full Text PDF

In October 2016, an adolescent boy sought care for acute genital ulceration in Cologne, Germany. We presumed a sexually transmitted infection, but initial diagnostic procedures yielded negative results. He was hospitalized because swab samples from the lesion grew toxigenic Corynebacterium diphtheriae, leading to the diagnosis of possibly sexually transmitted cutaneous diphtheria.

View Article and Find Full Text PDF

Objectives: Patients with acute respiratory distress syndrome (ARDS) due to viral infection are at risk for secondary complications like invasive aspergillosis. Our study evaluates coronavirus disease 19 (COVID-19) associated invasive aspergillosis at a single centre in Cologne, Germany.

Methods: A retrospective chart review of all patients with COVID-19 associated ARDS admitted to the medical or surgical intensive care unit at the University Hospital of Cologne, Cologne, Germany.

View Article and Find Full Text PDF