Publications by authors named "Geusau A"

Background: Men who have sex with men (MSM) are more vulnerable to acquiring sexually transmitted infections (STIs). In 2019, for instance, 74% of European (Ng) cases among males affected MSM. A recent report by the World Health Organization showed that most of the 2020' interim targets to end STIs by 2030 had not been met.

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Introduction: Solid organ transplant recipients (SOTRs) are believed to have an increased risk of metastatic cutaneous squamous cell carcinoma (cSCC), but reliable data are lacking regarding the precise incidence and associated risk factors.

Methods: In a prospective cohort study, including 19 specialist dermatology outpatient clinics in 15 countries, patient and tumor characteristics were collected using standardized questionnaires when SOTRs presented with a new cSCC. After a minimum of 2 years of follow-up, relevant data for all SOTRs were collected.

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Because of long-term immunosuppression, solid organ transplant recipients are at increased risk for keratinocyte cancer. We matched solid organ transplant patients ( = 150), cases with keratinocyte cancers and tumor-free controls, considering the most important risk factors for keratinocyte cancer in solid organ transplant recipients. Using whole exome data of germline DNA from this patient cohort, we identified several genetic loci associated with the occurrence of multiple keratinocyte cancers.

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Article Synopsis
  • The study investigates the relationship between skin aging, UV exposure, and the incidence of non-melanoma skin cancer (NMSC) in organ transplant recipients (OTR).
  • Compared to OTR with NMSC, healthy controls showed greater signs of skin aging, but similar UV exposure levels, except for specific intentional sun exposure.
  • Key findings reveal that skin aging, intentional sun exposure, and certain genetic factors significantly increase the risk of NMSC, highlighting the importance of monitoring OTR for skin-related complications.
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Use of immune checkpoint inhibitors (ICIs) in solid organ transplant recipients (SOTRs) with advanced skin cancers presents a significant clinical management dilemma. SOTRs and other immunosuppressed patients have been routinely excluded from ICI clinical trials with good reason: immune checkpoints play an important role in self- and allograft-tolerance and risk of acute allograft rejection reported in retrospective studies affects 10% to 65% of cases. These reports also confirm that cutaneous squamous cell carcinoma and melanoma respond to ICI therapy, although response rates are generally lower than those observed in immunocompetent populations.

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Objectives: International surveillance data show a constant rise in the number of Neisseria gonorrhoeae infections and an increase in drug resistance of N. gonorrhoeae. As recent N.

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We investigated genomic determinants of antimicrobial resistance in 1,318 Neisseria gonorrhoeae strains isolated in Austria during 2016-2020. Sequence type (ST) 9363 and ST11422 isolates had high rates of azithromycin resistance, and ST7363 isolates correlated with cephalosporin resistance. These results underline the benefit of genomic surveillance for antimicrobial resistance monitoring.

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Due to increasing rates of antimicrobial resistance (AMR) in Neisseria gonorrhoeae, alternative treatments should be considered. To assess rifampicin's potential as a gonorrhea treatment, we used mutations to estimate rifampicin resistance in Austrian N. gonorrhoeae isolates.

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Background: The proportion of Merkel cell carcinomas (MCCs) in solid-organ transplant recipients (SOTR) harbouring Merkel cell polyomavirus (MCPyV) is unknown, as are factors affecting their outcomes.

Objective: To describe clinicopathological features of MCC in SOTR, investigate the tumoral MCPyV-status and identify factors associated with tumour outcomes.

Methods: Retrospective, international, cohort-study.

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Importance: There is a paucity of evidence to guide physicians regarding prevention strategies for cutaneous squamous cell carcinoma (CSCC) in solid organ transplant recipients (SOTRs).

Objective: To examine the development and results of a Delphi process initiated to identify consensus-based medical management recommendations for prevention of CSCC in SOTRs.

Evidence Review: Dermatologists with more than 5 years' experience treating SOTRs were invited to participate.

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Background: Organ transplant recipients (OTR) are at marked increased risk of skin cancer and skin infections compared to the general population.

Objectives: The purpose of this study was to acquire long-term incidence data on commonly occurring skin diseases in four different transplant groups.

Materials & Methods: This retrospective single-centre cohort study included 621 OTR.

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Micro RNAs (miRNAs) are considered as promising biomarkers for skin cancer. By next generation sequencing (NGS), we measured and compared miRNA expression profiles of tumor, peri-lesional, and control tissue of immunosuppressed organ transplant recipients (OTR), suffering from localized cutaneous squamous cell carcinoma (cSCC). Out of 490 miRNAs detected in cSCC tissue, 23 significantly regulated miRNAs were selected for quantitative targeted analysis in serum samples of our patients and control sera from OTR without cSCC.

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Solid organ transplant recipients (OTR) are at extreme risk of developing cutaneous squamous cell carcinomas (cSCC) post-transplantation due to the immunosuppressive medication needed to retain the transplanted organ. The early classical immunosuppressive drugs, azathioprine and cyclosporine, have largely been replaced by modern immunosuppressants, namely mycophenolate mofetil and tacrolimus, as well as sirolimus and everolimus. Although still very high, the risk of cSCC in OTR seems to be decreasing which suggests that cSCC risk may be lower in OTR treated with these modern immunosuppressive drugs and that cSCC preventive measures may be effective.

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Background: Rapid identification of human herpesviruses from lesion swabs is necessary for timely initiation of antiviral treatment, especially with infections involving neonates and immunocompromised individuals. The aim of the study was to investigate the results of an in-house polymerase chain reaction (PCR) test for herpesviruses in patients with symptoms suggestive for a herpesvirus infection.

Patients And Methods: In this single center retrospective study the results of 3677 lesion swab specimens tested for human herpes simplex virus 1 and 2 (HSV 1 and 2) and varicella zoster virus (VZV) were analyzed in the context of data sheets giving details of the suspected diagnosis, medical history as well as the demographic data of the patients.

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Molecular profiling of tissue samples in organ transplant recipients (OTRs) may allow early and minimally invasive identification of actinic keratosis (AK). The aim of this study was to compare mRNA expression profiles of 13 genes, as putative genetic biomarkers of AK, before and after treatment using two different field therapies, and to correlate the results with histological and clinical parameters. For this single-centre prospective randomized intra-patient-controlled study, 10 OTRs with AKs were recruited for field therapy with two cycles of methyl-5-aminolevulinate 16% cream-photodynamic therapy (PDT) at one site and imiquimod 5% cream for four weeks at another site.

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Developing effective therapies against chronic wound healing deficiencies is a global priority. Thus we evaluated the safety of two different doses of topically administered autologous APOSEC, the secretome of apoptotic peripheral blood mononuclear cells (PBMCs), in healthy male volunteers with artificial dermal wounds. Ten healthy men were enrolled in a single-center, randomized, double-blinded, placebo-controlled phase 1 trial.

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Background: Organ transplant recipients (OTRs) have a highly increased risk of cutaneous squamous cell carcinomas (SCCs). Sensation of pain in cutaneous tumours is a powerful patient-reported warning signal for invasive SCCs in OTRs.

Objectives: To investigate the impact of painful vs.

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Background And Objectives: The increase in minimum inhibitory concentrations (MICs) of cephalosporins for Neisseria gonorrhoeae has given rise to concerns regarding potentially untreatable gonococcal infections. The goal was to ascertain the prevalence of gonorrhea in a Viennese patient group and determine resistance patterns. Another objective was to evaluate resistance profiles and MIC values of gonococcal isolates in an Austria-wide surveillance project.

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Organ transplant recipients (OTR) are at high risk for cutaneous squamous cell carcinomas (SCC). We aimed to define clinically meaningful patient-reported warning signals predicting the presence of invasive SCC.Patient-reported signs and symptoms of 812 consecutively biopsied skin lesions from 410 OTR were determined by questionnaire and physical examination and related to the subsequent biopsy-proven diagnoses.

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Organ transplant recipients (OTR) are at higher risk of developing life-threatening infections. In this study, we tested 527 Candida isolates obtained from the oral and genital mucosa from OTR and healthy controls in order to monitor antifungal susceptibility patterns in this particular risk group. Testing was carried out in parallel for already marketed azoles and anidulafungin.

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The transcription factor Nrf2 is a key regulator of the cellular stress response, and pharmacological Nrf2 activation is a promising strategy for skin protection and cancer prevention. We show here that prolonged Nrf2 activation in keratinocytes causes sebaceous gland enlargement and seborrhea in mice due to upregulation of the growth factor epigen, which we identified as a novel Nrf2 target. This was accompanied by thickening and hyperkeratosis of hair follicle infundibula.

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For the treatment of early infectious syphilis, enhanced therapy with three dosages of benzathine penicillin G has been under consideration, particularly in the human immunodeficiency virus type 1 infected population (HIV-1). The serological outcome of 249 patients with primary and secondary syphilis treated with standard or enhanced therapy was analyzed retrospectively; 98% (139/142) achieved serological cure with a single dosage and 92% with enhanced therapy (P=0.033).

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Primary cutaneous posttransplant lymphoproliferative disorders (PTLD) are rare. This retrospective, multicenter study of 35 cases aimed to better describe this entity. Cases were (re)-classified according to the WHO-EORTC or the WHO 2008 classifications of lymphomas.

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Background: The World Health Organization estimates that 10-12 million new syphilis infections occur each year. Without treatment, years to decades after initial infection, 30% of affected individuals may develop tertiary syphilis, which can manifest as neurosyphilis. The aim of this review is to evaluate the research literature examining the psychopathological manifestations of psychosis in association with neurosyphilis.

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