Publications by authors named "Martirosian G"

Background: Two-stage revision arthroplasty remains the main surgical strategy for the treatment of prosthetic joint infections (PJI). Sonicate fluid culture has improved sensitivity compared to standard periprosthetic tissue culture, but its usefulness is questionable during the second stage of revision arthroplasty.

Material And Methods: Twenty-seven patients with prosthetic joint infection were investigated.

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Clostridioides difficile is an important health care-associated pathogen. The aim of this study was to analyze the antibiotic susceptibility of C. difficile isolates from feces of patients from 13 hospitals in Silesia, Poland.

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BACKGROUND Recent studies have shown that up to 25% of sepsis cases originate in the urinary tract. Urosepsis can be associated with cystitis, lower urinary tract infections (UTIs), and upper UTIs and is most commonly caused by gram-negative bacteria. This retrospective study from a urology center in southern Poland, was conducted between 2017 and 2020 and aimed to investigate the causes, microbiology laboratory findings, and management in 138 patients with UTIs and urosepsis.

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Article Synopsis
  • The study investigated an outbreak of rifampicin-resistant ribotype 027 (RT 027) fecal isolates in a Polish hospital from late 2017 to early 2018 using multilocus variable tandem repeat analysis (MLVA).
  • Twenty-nine fecal isolates were analyzed, revealing that all strains contained specific toxin genes and had varying antibiotic resistance profiles, including significant resistance to imipenem (97%) and rifampicin (45%).
  • The findings indicated a transmission outbreak of multidrug-resistant RT 027, likely due to poor hygiene and spore presence in the hospital, highlighting the need for further research into the resistance mechanisms.
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  • Researchers collected 116 environmental samples from a clinical hospital to study the presence of Clostridium species between 2017 and 2019.
  • They successfully isolated six strains of C. difficile and twelve strains of C. perfringens from these samples.
  • The study highlights that antibiotic-resistant Clostridium species were prevalent in the hospital environment, indicating the need for using specialized media like C diff Banana Broth™ for accurate detection.
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  • * The phage exhibits low similarity to existing phages, only closely related to phiCD24-1, indicating its unique genetic profile.
  • * Genomic analysis revealed 66 predicted open reading frames (ORFs), with 37 linked to functional proteins, contributing to the understanding of the genetic diversity of tailed phages.
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Immunosuppression is a risk factor of persistent human papillomavirus (HPV) infections, which might lead to development of (pre)malignant lesions of the cervix and lower anogenital tract. Results of HPV DNA testing using cervicovaginal self-samples are comparable to those that are clinician-obtained and therefore might be used in cervical screening. The aim of this study was to assess the prevalence of high-risk HPV (hrHPV) infections, their risk factors and the genotypes distribution among women undergoing immunosuppressive therapy.

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(CD) is a Gram-positive pathogen responsible for CD-associated disease (CDAD), which is characterized by symptoms ranging from mild diarrhea to pseudomembranous colitis. This work is an attempt to respond to the need of novel methods for CD infection (CDI) prevention, since the number of CDI cases is still rising. A bioinformatics approach was applied to design twenty-one peptides consisting of in silico predicted linear B-cell and T-cell epitopes of aminopeptidase M24 from CD.

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(CD) cause a severe diarrhea which can lead to pseudomembranous colitis and even patient death. CD infection (CDI) is connected mainly with changes in intestinal microbiota as a consequence of antibiotic treatment. The growing resistance to antibiotics, justifies the search for new methods of combating CD.

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This paper attempts to determine the role of the hospital environment in the spread of infections based on a review of studies published in the medical literature and in the light of the authors' own experiences. has recently attracted more and more attention, not only as an etiological factor of pseudomembranous intestinal inflammation and antibiotic associated diarrhea, but also as an etiologic factor of healthcare-associated infections (HAI) because of the possibility to survive in the hospital environment for a long time. This is caused by the production of spores, whose eradication options are limited.

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Clostridium difficile (CD) infections are a growing threat due to the strain resistance to antibiotic treatment and the emergence of hypervirulent strains. One solution to this problem is the search for new vaccine antigens, preferably surface-localized that will be recognized by antibodies at an early stage of colonization. The purpose of the study was to assess the usefulness of novel immunoreactive surface proteins (epitopes) as potential vaccine antigens.

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Infectious factors are taken into consideration in pathophysiology of autism spectrum disorders (ASD). ASD patients often suffer from gastrointestinal disorders. The intestinal microbiota of autistic patients significantly differs from that in healthy individuals.

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Background: This prospective study investigated the role of mechanical and biological factors in aseptic implant loosening or presumed silent prosthetic joint infection (PJI).

Methods: Thirty-seven patients were investigated. Microbiologic and molecular methods were used to detect bacteria on the surface of the failed implants removed during revision arthroplasty.

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Clostridium difficile is an important healthcare-associated pathogen, responsible for a broad spectrum of diarrheal diseases. The aim of this prospective study was to determine the occurrence of C. difficile infection (CDI), to characterize cultured C.

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The prevalence of urogenital mycoplasmas in men with NGU in Upper Silesia (Poland) was studied. Mycoplasmas were detected in 36.7% men (Ureaplasma parvum and Mycoplasma genitalium were found in 30% and 16.

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Background: The use of a prefabricated spacer in two-stage revision arthroplasty remains one of the few surgery strategies for infected-joint arthroplasty treatment, despite the many unidentified microorganisms in the infected joint replacements reported in some recent studies. The aim of this prospective survey was to investigate if the sonication followed by polymerase chain reaction (PCR) can improve bacterial identification on the surfaces of prefabricated spacers and if the systemic laboratory mediators of infection and positive microbiological results can take a role of predictive factors of infection and clinical failures in 2-years follow-up.

Methods: Thirteen patients with prosthetic joint infection were investigated.

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Objectives: Workers of X-ray departments are occupationally exposed to long-term low levels of ionizing radiation (LLIR), which may affect their humoral immunity. The aim of the study was to assess the influence of LLIR on the number and proportion of B cells (CD19+), B1 cells (CD5+CD19+) and memory B cells (CD27+CD19+) in peripheral blood of such workers.

Materials And Methods: In the study group of 47 X-ray departments workers and the control group consisting of 38 persons, the number and percentage of CD19+, CD5+CD19+, CD27+CD19+ cells as well as CD5+CD19+/CD19+ and CD27+CD19+/CD19+ cell ratios were assessed using flow cytometry.

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Bacterial infections, especially endogenous, are the frequent complications among hemodialyzed and renal transplant patients. In this study we assumed the prevalence of urogenital mycoplasmas and HPV among hemodialysed women. We examined 32 hemodialysed women aged 20-48 (mean 35.

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Background: Female kidney graft recipients are regarded as a group at risk of cervical cancer development. The objective of this study was to assess the prevalence of cervical high-risk human papilloma virus (HR-HPV) infection and cervical intraepithelial neoplasia (CIN) in female kidney graft recipients in comparison to healthy controls.

Material And Methods: We assessed the prevalence of HR-HPV and CIN in 60 female kidney graft recipients of reproductive age in outpatient care of the First Department of Obstetrics and Gynecology, Medical University of Warsaw.

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Objectives: It is suggested that gut microbiota play a role in the pathogenesis of obesity enhancing energy utilization from digested food. The influence of gut microbiota on resting energy expenditure (REE) has not been evaluated yet.

Aim: The aim of the study is to assess the composition on gut microbiota and its association with REE in obese and normal weight subjects.

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The association between gut microbiota and circulating zonulin level, a marker of intestinal permeability, has not been studied yet. The aim of the study is the assessment of plasma zonulin, haptoglobin and proinflammatory cytokines (TNF- α and IL-6) levels in relation to composition of gut microbiota in obese and normal weight subjects. Circulating inflammation markers, such as TNF- α , sTNFR1, sTNFR2, IL-6, zonulin, and haptoglobin levels were measured and semiquantitative analysis of gut microbiota composition was carried out in 50 obese and 30 normal weight subjects without concomitant diseases.

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Purpose: We will test the hypothesis that ultrasound supported by polymerase chain reaction (PCR) could improve bacterial identification in non-infected prosthetic joint loosening. The aim was to detect bacterial species in non-infected prosthetic joint loosening using ultrasound and 16S rRNA gene sequencing.

Methods: A total of 16 patients (11 women and five men) aged 46-80 years (mean age 65.

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Background: Immunosuppressive therapy protects the transplanted organ but predisposes the recipient to chronic infections and malignancies. Transplant patients are at risk of cervical intraepithelial neoplasia (CIN) and cervical cancer resulting from an impaired immune response in the case of primary infection or of reactivation of a latent infection with human papillomavirus of high oncogenic potential (HR-HPV).

Methods: The aim of this study was to assess the prevalence of HR-HPV cervical infections and CIN in 60 female kidney graft recipients of reproductive age in comparison to that in healthy controls.

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Limited number of publications described vaginal microflora after kidney transplantation. Our PubMed search revealed only 18 publications including words "vaginal bacteria & kidney transplant" in the period of 1978-2011. The aim of this study was to characterize lactobacilli isolated from vaginal swabs of women after kidney transplantation, compared with healthy women.

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