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Skin infection bacteria

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https://www.readbyqxmd.com/read/28647345/cutaneous-nod2-expression-regulates-the-skin-microbiome-and-wound-healing-in-a-murine-model
#1
Helen Williams, Rachel A Crompton, Helen A Thomason, Laura Campbell, Gurdeep Singh, Andrew J McBain, Sheena M Cruickshank, Matthew J Hardman
The skin microbiome exists in dynamic equilibrium with the host but when the skin is compromised, bacteria can colonise the wound and impair wound healing. Thus the interplay between normal skin-microbial interactions versus pathogenic-microbial interactions in wound repair is important. Bacteria are recognised by innate host pattern recognition receptors (PRRs) and we previously demonstrated an important role for the PRR NOD2 (nucleotide-binding oligomerisation domains-containing protein 2) in skin wound repair...
June 21, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28646837/microbiological-purity-assessment-of-cosmetics-used-by-one-and-several-persons-and-cosmetics-after-their-expiry-date
#2
Krzysztof Skowron, Agnieszka Jakubicz, Anna Budzyńska, Agnieszka Kaczmarek, Katarzyna Grudlewska, Adrian Reśliński, Eugenia Gospodarek-Komkowska
Background: Microbiological purity of cosmetics provides safety of users during their use, prevents physicochemical changes of a preparation, infections and diseases of the skin. Objective: The aim of this study was to assess the level of microbiological contamination of cosmetics used by one person and by several people and cosmetics after their expiry date in relations to standards for marketed cosmetics, ensuring safety of their use. Material and Methods: This study was conducted using 55 samples representing 19 types of cosmetics, divided into three groups: used by one person, used by several people and after the expiry date...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28646114/staphylococcus-aureus-strain-newman-photoinactivation-and-cellular-response-to-sunlight-exposure
#3
Jill S McClary, Lauren M Sassoubre, Alexandria B Boehm
Sunlight influences microbial water quality of surface waters. Previous studies have investigated photoinactivation mechanisms and cellular photostress responses of fecal indicator bacteria (FIB), including Escherichia coli and enterococci, but further work is needed to characterize photostress responses of bacterial pathogens. Here we investigate the photoinactivation of Staphylococcus aureus (strain Newman), a pigmented, waterborne pathogen of emerging concern. We measured photodecay using standard culture-based assays and cellular membrane integrity; and investigated photostress response by measuring the relative number of mRNA transcripts of select oxidative stress, DNA repair, and metabolism genes...
June 23, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28642751/in-vitro-antimicrobial-activity-of-chlorquinaldol-against-microorganisms-responsible-for-skin-and-soft-tissue-infections-comparative-evaluation-with-gentamicin-and-fusidic-acid
#4
Monica Bortolin, Alessandro Bidossi, Elena De Vecchi, Maura Avveniente, Lorenzo Drago
Skin and soft tissue infections (SSTIs) are a major therapeutic challenge for clinicians. The emergence of pathogens with decreased susceptibility to available therapies has become an emerging problem often associated with treatment failure. Hence, there is an urgent need for novel broad-spectrum antimicrobial agents. The purpose of this study was to assess the feasibility of chlorquinaldol as an alternative approach to currently used topical antibiotics for the treatment of skin and soft tissue infections...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28637861/epidemic-and-endemic-pathogen-dynamics-correspond-to-distinct-host-population-microbiomes-at-a-landscape-scale
#5
Andrea J Jani, Roland A Knapp, Cheryl J Briggs
Infectious diseases have serious impacts on human and wildlife populations, but the effects of a disease can vary, even among individuals or populations of the same host species. Identifying the reasons for this variation is key to understanding disease dynamics and mitigating infectious disease impacts, but disentangling cause and correlation during natural outbreaks is extremely challenging. This study aims to understand associations between symbiotic bacterial communities and an infectious disease, and examines multiple host populations before or after pathogen invasion to infer likely causal links...
June 28, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28636781/discovery-of-two-bombinin-peptides-with-antimicrobial-and-anticancer-activities-from-the-skin-secretion-of-oriental-fire-bellied-toad-bombina-orientalis
#6
Chang Zhou, Zhengming Wang, Xin Peng, Yao Liu, Yangjun Lin, Zhe Zhang, Yuling Qiu, Meihua Jin, Ran Wang, Dexin Kong
Amphibian skin secretions are known to contain numerous peptides with a large array of biological activities. Bombinins are a group of amphibian derived peptides with broad spectrum antimicrobial activities that have been only identified from the ancient toad species, Bombina. In this study, we described the identification and characterization of a novel bombinin precursor which encoded a bombinin like peptide (BLP-7) and a novel bombinin H type peptide (named as Bombinin H-BO) from the skin secretion of Oriental fire-bellied toad, Bombina orientalis...
June 21, 2017: Chemical Biology & Drug Design
https://www.readbyqxmd.com/read/28634536/telavancin-a-novel-semisynthetic-lipoglycopeptide-agent-to-counter-the-challenge-of-resistant-gram-positive-pathogens
#7
REVIEW
Biswadeep Das, Chayna Sarkar, Debasmita Das, Amit Gupta, Arnav Kalra, Shubham Sahni
Telavancin (TD-6424), a semisynthetic lipoglycopeptide vancomycin-derivative, is a novel antimicrobial agent developed by Theravance for overcoming resistant Gram-positive bacterial infections, specifically methicillin-resistant Staphylococcus aureus (MRSA). The US Food and Drug Administration (USFDA) had approved telavancin in 2009 for the treatment of complicated skin and skin structure infections (cSSSIs) caused by Gram-positive bacteria, including MRSA (S. aureus, Streptococcus agalactiae, Streptococcus pyogenes, Streptococcus anginosus group, or Enterococcus faecalis)...
March 2017: Therapeutic Advances in Infectious Disease
https://www.readbyqxmd.com/read/28633955/the-microbiome-and-transfusion-in-cancer-patients
#8
REVIEW
Hadi Goubran, Jerard Seghatchian, Julia Radosevic, Gaafar Ragab, Thierry Burnouf
Our microbiota is determined by many variables including ABO blood groups. The microbiota is not only confined to the gut and skin but is also recoverable from blood of healthy donors. The microbiota shape our immune system through cross reactivity with antigens, the expression of direct molecular patterns, the release of cytokines, the effects on nutrients and micronutrients and even through an interplay with epigenetics. It is likely, therefore, that a donor's microbiota could alter the antigenicity of blood and its components and potentially contribute to transfusion-related immune modulation [TRIM]...
June 3, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28627952/clinical-efficacy-of-piperacillin-tazobactam-in-the-treatment-of-complicated-skin-and-soft-tissue-infections
#9
Kohei Takimoto, Qianzhi Wang, Daisuke Suzuki, Mitsuya Katayama, Yoshiro Hayashi
Introduction Complicated skin and soft tissue infections (cSSTIs) are skin and soft tissue infections (SSTIs) that involve deep soft tissue. cSSTIs often require surgical intervention and/or hospitalization. cSSTIs are associated with significant mortality and morbidity, and carry a significant burden on health care systems. Piperacillin/tazobactam has been regarded as a standard treatment for cSSTIs because of its antibiotic spectrum, safety and clinical efficacy. Several antibiotics, as compared to piperacillin/tazobactam, have been evaluated in the treatment of cSSTIs...
June 19, 2017: Expert Opinion on Pharmacotherapy
https://www.readbyqxmd.com/read/28616476/proteobacteria-from-the-human-skin-microbiota-species-level-diversity-and-hypotheses
#10
C Cosseau, S Romano-Bertrand, H Duplan, O Lucas, I Ingrassia, C Pigasse, C Roques, E Jumas-Bilak
The human skin microbiota is quantitatively dominated by Gram-positive bacteria, detected by both culture and metagenomics. However, metagenomics revealed a huge variety of Gram-negative taxa generally considered from environmental origin. For species affiliation of bacteria in skin microbiota, clones of 16S rRNA gene and colonies growing on diverse culture media were analyzed. Species-level identification was achieved for 81% of both clones and colonies. Fifty species distributed in 26 genera were identified by culture, mostly belonging to Actinobacteria and Firmicutes, while 45 species-level operational taxonomic units distributed in 30 genera were detected by sequencing, with a high diversity of Proteobacteria...
December 2016: One Health
https://www.readbyqxmd.com/read/28615835/haematological-changes-in-south-indian-fresh-water-murrel-channa-punctatus-have-both-eus-and-a-hydrophila-infection
#11
Koteshwar Rao Podeti, G Benarjee
The mixed infection in fishes is a common feature and in this Pathogens like Bacteria, Fungi and Protozoan's are found together to cause ill health to the fishes known as Epizootic Ulcerative Syndrome (EUS). In this syndrome the low temperature and aquatic pollution aggravates the infection in fishes. In the present study the fresh water edible fish, Channa punctatus (Murrel) was found infected with the bacteria namely, Aeromonas hydrophila, Staphylococcus aureus, Pseudomonas aeruginosa and Salmonella salmonicida...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28614442/skin-and-soft-tissue-infections-in-the-intensive-care-unit-a-retrospective-study-in-a-tertiary-care-center
#12
Luís Filipe Malheiro, Rita Magano, Alcina Ferreira, António Sarmento, Lurdes Santos
Objective: To identify factors that may influence outcomes in patients with severe skin and soft tissue infections in the intensive care unit. Methods: A retrospective observational study was conducted in a cohort of 1,123 critically ill patients admitted to an intensive care unit with a primary or secondary diagnosis of severe skin and soft tissues infection between January 2006 and December 2014. Results: Thirty patients were included, 20 (66...
June 12, 2017: Revista Brasileira de Terapia Intensiva
https://www.readbyqxmd.com/read/28607014/np108-an-antimicrobial-polymer-with-activity-against-methicillin-and-mupirocin-resistant-staphylococcus-aureus
#13
Derry K Mercer, Laura K Katvars, Fiona Hewitt, Daniel W Smith, Jennifer Robertson, Deborah A O'Neil
Staphylococcus aureus is a clinically significant human pathogen that causes infectious diseases ranging from skin and soft tissue infections (SSTI), healthcare associated infections (HAI) to potentially fatal bacteraemia and endocarditis. Nasal carriage of S. aureus, especially persistent carriage, is associated with an increased risk of subsequent infection, particularly nosocomial and surgical site infections (SSI), usually via autoinfection. NP108 is a cationic antimicrobial polymer composed of Generally Recognized as Safe (GRAS) amino acid building blocks...
June 12, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28606546/advanced-multi-targeted-composite-biomaterial-dressing-for-pain-and-infection-control-in-chronic-leg-ulcers
#14
Ovidio Catanzano, Rachael Docking, Patricia Schofield, Joshua Boateng
This study aimed to develop advanced biomaterial polysaccharide based dressings to manage pain associated with infected chronic leg ulcers in older adults. Composite carrageenan (CARR) and hyaluronic acid (HA) dressings loaded with lidocaine (LID) and AgNPs were formulated as freeze-dried wafers and functionally characterized for porous microstructure (morphology), mechanical strength, moisture handling properties, swelling, adhesion and LID release. Antimicrobial activity of AgNPs was evaluated (turbidity assay) against Escherichia coli, Pseudomonas aeruginosa and Staphylococcus aureus whilst cell viability studies (MTT) was performed on normal adult human primary epidermal keratinocyte cells...
September 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28605339/anti-mrsa-activity-of-fruiting-body-extracts-of-spectacular-rustgill-mushroom-gymnopilus-junonius-agaricomycetes
#15
Stephanie Barneche, Silvana Alborés, Graciela Borthagaray, María Pía Cerdeiras, Alvaro Vázquez
Despite the great advances in chemotherapeutics, infectious diseases are still one of the leading causes of death worldwide. Among some of the clinically relevant pathogens, methicillin-resistant Staphylococcus aureus (MRSA) ranks as one of the most difficult bacteria to treat. It is a common cause of skin, soft-tissue, and endovascular infections, as well as pneumonia, septic arthritis, endocarditis, osteomyelitis, and sepsis. The research on Basidiomycota is extensive; many species show a broad spectrum of pharmacological activities, including antimicrobial activity...
2017: International Journal of Medicinal Mushrooms
https://www.readbyqxmd.com/read/28602589/early-pathogenic-colonisers-of-acute-burn-wounds-a-retrospective-review
#16
Hye-Sung Park, Chengde Pham, Eldho Paul, Alex Padiglione, Cheng Lo, Heather Cleland
BACKGROUND: Early excision of burns reduces the incidence of local and systemic infections caused by colonising microorganisms, and reduces mortality and length of hospital stay. Appropriate antibiotic prophylaxis can reduce the risk of postoperative wound infections and skin graft loss. Antibiotic selection should be based on likely pathogens. However, there are few studies that have investigated the early pathogenic colonisers of acute burn wounds. AIM: To describe pathogenic microorganisms found in acute burns and to make further recommendations on the use of early perioperative prophylactic antibiotics...
June 8, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28602271/animal-microbial-and-fungal-borne-skin-pathology-in-the-mountain-wilderness-a-review
#17
REVIEW
William E Brandenburg, William Levandowski, Tom Califf, Cory Manly, Cecilia Blair Levandowski
Mountains are home to numerous organisms known to cause skin disease. Bites, stings, poisons, chemicals, toxins, trauma, and infections all contribute to this end. Numerous plants, animals, fungi, bacteria, viruses, and protozoa are responsible. This paper aims to review skin illness and injury sustained from organisms in the mountains of North America. Other factors such as increased ultraviolet radiation, temperature extremes, and decreasing atmospheric pressure along with human physiologic parameters, which contribute to disease severity, will also be discussed...
June 2017: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/28594356/synergistic-antibacterial-effects-of-chitosan-caffeic-acid-conjugate-against-antibiotic-resistant-acne-related-bacteria
#18
Ji-Hoon Kim, Daeung Yu, Sung-Hwan Eom, Song-Hee Kim, Junghwan Oh, Won-Kyo Jung, Young-Mog Kim
The object of this study was to discover an alternative therapeutic agent with fewer side effects against acne vulgaris, one of the most common skin diseases. Acne vulgaris is often associated with acne-related bacteria such as Propionibacteriumacnes, Staphylococcusepidermidis, Staphylococcusaureus, and Pseudomonasaeruginosa. Some of these bacteria exhibit a resistance against commercial antibiotics that have been used in the treatment of acne vulgaris (tetracycline, erythromycin, and lincomycin). In the current study, we tested in vitro antibacterial effect of chitosan-phytochemical conjugates on acne-related bacteria...
June 8, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28593346/the-first-identified-cathelicidin-from-tree-frogs-possesses-anti-inflammatory-and-partial-lps-neutralization-activities
#19
Lixian Mu, Lei Zhou, Juanjuan Yang, Li Zhuang, Jing Tang, Tong Liu, Jing Wu, Hailong Yang
As of February 2017, approximately 7639 amphibian species have been described in the AmphibiaWeb database. However, only 20 cathelicidin-like antimicrobial peptides have been identified to date from 10 amphibian species. Half of these peptides were identified from genome sequences and have not yet been functionally characterized. In this study, a novel cathelicidin-like peptide designated cathelicidin-PP was purified from the skin of tree frog Polypedates puerensis. Cathelicidin-PP is a 32 residue peptide of sequence ASENGKCNLLCLVKKKLRAVGNVIKTVVGKIA...
June 7, 2017: Amino Acids
https://www.readbyqxmd.com/read/28590443/interaction-of-candida-species-with-the-skin
#20
REVIEW
Andreas Kühbacher, Anke Burger-Kentischer, Steffen Rupp
The human skin is commonly colonized by diverse fungal species. Some Candida species, especially C. albicans, do not only reside on the skin surface as commensals, but also cause infections by growing into the colonized tissue. However, defense mechanisms at the skin barrier level are very efficient, involving residential non-immune and immune cells as well as immune cells specifically recruited to the site of infection. Therefore, the skin is an effective barrier against fungal infection. While most studies about commensal and pathogenic interaction of Candida species with host epithelia focus on the interaction with mucosal surfaces such as the vaginal and gastrointestinal epithelia, less is known about the mechanisms underlying Candida interaction with the skin...
June 7, 2017: Microorganisms
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