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Protein, Cellular and Soft Tissue Interactions with Polyurethanes
Published in Nina M. K. Lamba, Kimberly A. Woodhouse, Stuart L. Cooper, Polyurethanes in Biomedical Applications, 2017
Nina M. K. Lamba, Kimberly A. Woodhouse, Stuart L. Cooper
Staphylococcus epidermidis is a normal constituent of the flora of human skin. It rarely causes infections in normal hosts but in susceptible people, such as those who are immunocompromised or have implants or catheters, it is the most common cause of infection. It adheres to polymer surfaces, including polyurethanes and produces a slime which is believed to protect the bacteria from antibiotics.209,210 Prolonged infection ultimately leads to septicemia and/or an inflammatory tissue reaction resulting in implant failure. The infections caused by S. epidermidis are persistent and resistant to treatment and because of this, diagnosis of an infection in a cardiovascular implant where S. epidermidis is involved, generally requires surgical removal of the implant.138
Pathogenic microorganisms related to human visits in Altamira Cave, Spain
Published in Cesareo Saiz-Jimenez, The Conservation of Subterranean Cultural Heritage, 2014
V. Jurado, L. Laiz, S. Sanchez-Moral, C. Saiz-Jimenez
Among the Firmicutes species, Staphylococcus epidermidis which colonises the skin and mucous membranes of the human body and represents the major part of the normal bacterial flora of this habitat, stands out. Recently this bacterium has emerged as a causative agent of infections often associated with implanted medical devices (Vuong < Otto 2002). The presence of this bacterium in Altamira Cave, as well as Staphylococcus capitis, both from human skin, should be related to the human presence.
Bacteriostasis and cleaning effect of trace ozone replacing personal care products
Published in Environmental Technology, 2023
Yanyan Peng, Zhou Chen, Yanzeng Li, Yuantao Wang, Chengsong Ye, Junming Xu, Shenghua Zhang
The human skin is inhabited by abundant and diverse microbial communities, including bacteria, fungi, and viruses. These microorganisms colonize different parts of the human skin according to their specific growth requirements. For example, lipophilic microorganisms such as Propionibacterium, Malassezia, and mites mainly colonize sebaceous areas [1–3]. Staphylococcus, Corynebacterium, and foot fungi prefer glabrous, humid skin such as the toe web [1,4]. Many common skin diseases are closely related to microbial populations. Previous studies have shown that Malassezia has a direct causal relationship with symptomatic skin diseases such as folliculitis, dandruff, and seborrheic dermatitis [5]. Candida albicans are usually asymptomatic in the skin and oral areas of the human body. However, alterations in the host microbiota or variations in the colonization environment can lead to the overgrowth of C. albicans, which causes thrush and diaper rash [6]. Staphylococcus epidermidis is a common symbiotic bacterium of the skin [7], and it has been reported to be the most common pathogen in indwelling medical devices, causing infections of prosthetic joints and vascular grafts [8]. Therefore, it is very important to find an effective method for controlling the excessive colonization of skin microbes and maintain the balance between skin microbes and the host.
Bacterial community in commercial airliner cabins in China
Published in International Journal of Environmental Health Research, 2020
Mingxin Liu, Junjie Liu, Jianlin Ren, Lumeng Liu, Ruiqing Chen, Yanju Li
A total of seven different species were retrieved from the samples. The strains obtained by 16S rRNA gene sequencing are shown in Table 3. The dominant strains in the airliner cabins were Gram-positive bacteria. The most common bacteria detected in the sampling were skin-surface organisms (mainly Gram-positive cocci). Two pathogenic bacteria were found in the test, Staphylococcus epidermidis and Pseudomonas luteola. The bacteria found in these tests were potentially harmful to the human body, especially for individuals with weakened immunity. Staphylococcus epidermidis present the risk of infection in poorly immunocompetent humans and may lead to diseases such as endocarditis (Levinson 2008). Another pathogenic bacterium may lead to meningitis and other diseases (The Great Bacteria Book). This study detected several species that had not been previously reported in the literature, including Brachybacterium paraconglomeratum and Deinococcus daejeonensis. In regard to Pseudomonas luteola, the genus had been reported in the literature, but not the exact species.
Bacterial contamination of neglected hospital surfaces and equipment in an Algerian hospital: an important source of potential infection
Published in International Journal of Environmental Health Research, 2022
Somia Saadi, Rachida Allem, Mohammed Sebaihia, Abdelaziz Merouane, Mohammed Bakkali
The species Staphylococcus aureus and Staphylococcus epidermis, ranked second dominant pathogen (7.41%), are commensal bacteria colonizing naturally the human microbiota of skin and mucosa in both healthy and immunodeficiency hosts (Chen et al. 2014; Russotto et al. 2015). Nevertheless, S. aureus is an opportunistic pathogen able to produce wide range of toxins and causing serious infections such as meningitis, endocarditic and toxic shock syndrome (Tong et al. 2015; Oliveira et al. 2018).