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https://www.readbyqxmd.com/read/28326070/antimicrobial-protection-of-marsupial-pouch-young
#1
REVIEW
Yuanyuan Cheng, Katherine Belov
Marsupials diverged from eutherian mammals about 148 million years ago and represent a unique lineage of mammals with distinctive morphological and reproductive characteristics. Marsupials have significantly shorter gestation periods than eutherians. Pregnancy typically ranges from 15 to 35 days, with young being born at a very early developmental stage and lacking differentiated lymphoid tissues and mature effector cells. Recent microbiome studies of the marsupial pouch revealed that marsupial young can face intense microbial challenges after birth, as the pouch contains a broad range of Gram-positive and Gram-negative bacteria...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28321459/-the-microbiome-and-autoimmunity
#2
T Schröder, S Ibrahim
An abundant and diverse set of commensal microbial communities covers the body's surfaces, collectively so-called microbiome. It has a functional impact on various immune processes and modulates many health-related processes, including autoimmunity. An active site of microorganism-host interplay is the intestinal mucosa. Growing evidence has helped us to learn how a specific microbiota composition and its functionality determine the intestinal barrier function and, furthermore, modulate pro-inflammatory and anti-inflammatory immune mechanisms in remote organs...
March 20, 2017: Der Internist
https://www.readbyqxmd.com/read/28318782/role-of-the-microbiome-in-swine-respiratory-disease
#3
REVIEW
Megan C Niederwerder
Microbiome is a term used to describe the community of microorganisms that live on the skin and mucosal surfaces of animals. The gastrointestinal microbiome is essential for proper nutrition and immunity. How the gastrointestinal microbiome impacts primary respiratory or systemic infections is an emerging area of study. Porcine reproductive and respiratory syndrome (PRRS) is caused by a systemic virus infection with primary lung pathology and continues to be the most costly disease of swine worldwide. Recent studies have demonstrated that improved outcome after experimental infection with PRRS virus and porcine circovirus type 2 (PCV2) is associated with increased fecal microbiome diversity and the presence of non-pathogenic Escherichia coli...
March 2, 2017: Veterinary Microbiology
https://www.readbyqxmd.com/read/28289569/diverse-bacterial-communities-exist-on-canine-skin-and-are-impacted-by-cohabitation-and-time
#4
Sheila Torres, Jonathan B Clayton, Jessica L Danzeisen, Tonya Ward, Hu Huang, Dan Knights, Timothy J Johnson
It has previously been shown that domestic dogs and their household owners share bacterial populations, and that sharing of bacteria between humans is facilitated through the presence of dogs in the household. However, less is known regarding the bacterial communities of dogs, how these communities vary by location and over time, and how cohabitation of dogs themselves influences their bacterial community. Furthermore, the effects of factors such as breed, hair coat length, sex, shedding, and age on the canine skin microbiome is unknown...
2017: PeerJ
https://www.readbyqxmd.com/read/28287302/cutaneous-wound-biofilm-and-the-potential-for-electrical-stimulation-in-management-of-the-microbiome
#5
Mohammed Ashrafi, Mohamed Baguneid, Teresa Alonso-Rasgado, Riina Rautemaa-Richardson, Ardeshir Bayat
Infection contributes significantly to delayed cutaneous wound healing, which impacts patient care. External application of electrical stimulation (ES) has beneficial effects on wound repair and regeneration. The majority of studies to date have explored ES in relation to planktonic microorganisms, yet evidence indicates that bacteria in chronic wounds reside as antibiotic-resistant polymicrobial biofilms, which contribute to impairing wound healing. Culture-independent sequencing techniques have revolutionized our understanding of the skin microbiome and allowed a more accurate determination of microbial taxa and their relative abundance in wounds allowing a greater understanding of the host-microbial interface...
March 2017: Future Microbiology
https://www.readbyqxmd.com/read/28274359/demodex-and-rosacea-revisited
#6
Ellen M Moran, Ruth Foley, Frank C Powell
Demodex mites are part of the vast microbiome living on and within human skin. The interaction of the various microorganisms with the skin plays a key role in the maintenance of homeostasis. The precise role and function of Demodex mites within normal and diseased human skin remains elusive. The emergence of ivermectin as a key therapy for rosacea has refocused interest in the role of Demodex mites in the pathogenesis of this skin disease and the ability of Demodex to modulate the host immune system.
March 2017: Clinics in Dermatology
https://www.readbyqxmd.com/read/28271525/survey-of-malassezia-sp-and-dermatophytes-in-the-cutaneous-microbiome-of-free-ranging-golden-headed-lion-tamarins-leontopithecus-chrysomelas-kuhl-1820
#7
Juan Ja Neves, Marcelo Francelino, Flavia Gl Silva, Luana Cl Baptista, Marina G Bueno, José L Catão-Dias, Camila Molina, Maria Cm Kierulff, Alcides Pissinatti, Selene DA Coutinho
BACKGROUND: Data about the presence of fungi on the cutaneous surface of wild animals are scarce. The aim of this study was to survey dermatophytes and Malassezia sp in the external ear canal and haircoat of Leontopithecus chrysomelas. METHODS: A total of 928 clinical samples were collected from 232 animals: For Malassezia screening 696 samples were studied, 464 of cerumen and 232 of haircoat; another 232 haircoat samples were studied for dermatophyte analysis. RESULTS: A geophilic dermatophyte, Microsporum cookie, was isolated from one young female...
March 8, 2017: Journal of Medical Primatology
https://www.readbyqxmd.com/read/28266549/parasitism-perturbs-the-mucosal-microbiome-of-atlantic-salmon
#8
M S Llewellyn, S Leadbeater, C Garcia, F-E Sylvain, M Custodio, K P Ang, F Powell, G R Carvalho, S Creer, J Elliot, N Derome
Interactions between parasite, host and host-associated microbiota are increasingly understood as important determinants of disease progression and morbidity. Salmon lice, including the parasitic copepod Lepeophtheirus salmonis and related species, are perhaps the most important problem facing Atlantic Salmon aquaculture after feed sustainability. Salmon lice parasitize the surface of the fish, feeding off mucus, scales and underlying tissue. Secondary bacterial infections are a major source of associated morbidity...
March 7, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28260936/microbiome-in-atopic-dermatitis
#9
REVIEW
Uwe Wollina
Atopic dermatitis (AD) is a common chronic inflammatory skin disease affecting ~10-20% of the general population. AD is characterized by disturbances in epidermal barrier function and hyperactive immune response. Recently, changes in the skin and intestinal microbiome have been analyzed in more detail. The available data suggest a link between disturbed skin microbiome and course of the disease. Flares of the disease are associated with an expansion of Staphylococcus aureus on lesional skin and a substantial loss of biodiversity in skin microbiome...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28252067/microbiome-skin-cream-kills-pathogen
#10
(no author information available yet)
No abstract text is available yet for this article.
March 1, 2017: Nature
https://www.readbyqxmd.com/read/28229543/developmental-trajectories-of-amphibian-microbiota-response-to-bacterial-therapy-depends-on-initial-community-structure
#11
Leyla R Davis, Laurent Bigler, Douglas C Woodhams
Improving host health through microbial manipulation requires untangling factors that shape the microbiome. There is currently little understanding of how initial community structure may drive the microbiota trajectory across host development or influence bacterial therapy. Probiotic baths of surface symbionts, Pseudomonas fluorescens and Flavobacterium johnsoniae were administered to 240 tadpoles of the midwife toad, Alytes obstetricans in semi-natural outdoor mesocosms originating from geographically and genetically distinct populations in Switzerland...
February 22, 2017: Environmental Microbiology
https://www.readbyqxmd.com/read/28228751/prospects-of-phage-application-in-the-treatment-of-acne-caused-by-propionibacterium-acnes
#12
REVIEW
Ewa Jończyk-Matysiak, Beata Weber-Dąbrowska, Maciej Żaczek, Ryszard Międzybrodzki, Sławomir Letkiewicz, Marzanna Łusiak-Szelchowska, Andrzej Górski
Propionibacterium acnes is associated with purulent skin infections, and it poses a global problem for both patients and doctors. Acne vulgaris (acne) remains a problem due to its chronic character and difficulty of treatment, as well as its large impact on patients' quality of life. Due to the chronic course of the disease, treatment is long lasting, and often ineffective. Currently there are data regarding isolation of P. acnes phages, and there have been numerous studies on phage killing of P. acnes, but no data are available on phage application specifically in acne treatment...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28228596/antimicrobials-from-human-skin-commensal-bacteria-protect-against-staphylococcus-aureus-and-are-deficient-in-atopic-dermatitis
#13
Teruaki Nakatsuji, Tiffany H Chen, Saisindhu Narala, Kimberly A Chun, Aimee M Two, Tong Yun, Faiza Shafiq, Paul F Kotol, Amina Bouslimani, Alexey V Melnik, Haythem Latif, Ji-Nu Kim, Alexandre Lockhart, Keli Artis, Gloria David, Patricia Taylor, Joanne Streib, Pieter C Dorrestein, Alex Grier, Steven R Gill, Karsten Zengler, Tissa R Hata, Donald Y M Leung, Richard L Gallo
The microbiome can promote or disrupt human health by influencing both adaptive and innate immune functions. We tested whether bacteria that normally reside on human skin participate in host defense by killing Staphylococcus aureus, a pathogen commonly found in patients with atopic dermatitis (AD) and an important factor that exacerbates this disease. High-throughput screening for antimicrobial activity against S. aureus was performed on isolates of coagulase-negative Staphylococcus (CoNS) collected from the skin of healthy and AD subjects...
February 22, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28210979/the-skin-as-a-route-of-allergen-exposure-part-ii-allergens-and-role-of-the-microbiome-and-environmental-exposures
#14
REVIEW
George Knaysi, Anna R Smith, Jeffrey M Wilson, Julia A Wisniewski
PURPOSE OF REVIEW: This second part of the article aims to highlight recent contributions in the literature that enhance our understanding of the cutaneous immune response to allergen. RECENT FINDINGS: Several properties of allergens facilitate barrier disruption and cutaneous sensitization. There is a strong epidemiologic relationship between the microbiome, both the gut and skin, and atopic dermatitis (AD). The mechanisms connecting these two entities remain enigmatic; however, recent murine models show that commensal skin bacteria play an active role in supporting skin barrier homeostasis and defense against microbial penetration...
January 2017: Current Allergy and Asthma Reports
https://www.readbyqxmd.com/read/28207943/the-role-of-the-skin-microbiome-in-atopic-dermatitis-a-systematic-review
#15
REVIEW
R Dybboe, J Bandier, L Skov, L Engstrand, J D Johansen
BACKGROUND: Dysbiosis is a hallmark of atopic dermatitis. The composition of skin microbiome communities and the causality of dysbiosis in eczema have not been well established. OBJECTIVE: To describe the skin microbiome profile in atopic dermatitis and address if there is a causal relationship between dysbiosis and atopic dermatitis. METHODS: The protocol is registered in PROSPERO (CRD42016035813). We searched PubMed, Embase, Scopus and ClinicalTrials...
February 16, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28198584/the-farming-environment-protects-mice-from-allergen-induced-skin-contact-hypersensitivity
#16
Christophe P Frossard, Vladimir Lazarevic, Nadia Gaïa, Stefano Leo, Camille Doras, Walid Habre, Jacques Schrenzel, Danielle Burger, Philippe A Eigenmann
BACKGROUND: Being born and raised in a farm provides a long-lasting protection for allergies. The microbial environment provided by farm animals is crucial to induce this protective effect, although underlying immune mechanisms remain elusive. OBJECTIVE: To establish a mouse model of global exposure to the farming environment and to study immunologic changes linked to protection of allergy. METHODS: Mice colonies were bred in parallel in a farm cowshed and the University animal facility (AF)...
February 15, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28194314/evolutionary-and-functional-implications-of-hypervariable-loci-within-the-skin-virome
#17
Geoffrey D Hannigan, Qi Zheng, Jacquelyn S Meisel, Samuel S Minot, Frederick D Bushman, Elizabeth A Grice
Localized genomic variability is crucial for the ongoing conflicts between infectious microbes and their hosts. An understanding of evolutionary and adaptive patterns associated with genomic variability will help guide development of vaccines and antimicrobial agents. While most analyses of the human microbiome have focused on taxonomic classification and gene annotation, we investigated genomic variation of skin-associated viral communities. We evaluated patterns of viral genomic variation across 16 healthy human volunteers...
2017: PeerJ
https://www.readbyqxmd.com/read/28175925/skin-microbiome-in-small-and-large-plaque-parapsoriasis
#18
Alexander Salava, Pedro Pereira, Velma Aho, Liisa Väkevä, Lars Paulin, Petri Auvinen, Annamari Ranki, Antti Lauerma
Staphylococcal enterotoxins have been shown to promote lymphoma-associated immune dysregulation. This study examined changes in the skin microbiome of parapsoriasis compared with intact skin. Swab microbiome specimens were taken of the parapsoriasis lesions of 13 patients. Control samples were taken from contralateral healthy sides of the body. Microbiotas were characterized by sequencing the V1-V3 region of the 16S ribosomal RNA bacterial genes on the Illumina MiSeq platform. The most common genera in the microbiome data were Propionibacterium (27...
February 8, 2017: Acta Dermato-venereologica
https://www.readbyqxmd.com/read/28156021/loss-of-cutaneous-microbial-diversity-during-first-three-weeks-of-life-in-very-low-birth-weight-infants
#19
A Salava, V Aho, E Lybeck, P Pereira, L Paulin, I Nupponen, A Ranki, P Auvinen, S Andersson, A Lauerma
Neonatal sepsis (NS) is a frequent problem in neonatal intensive care, especially in preterm and very low birth weight (VLBW) infants. The objective of the study was to characterize the cutaneous bacterial microbiome in VLBW infants treated in the neonatal intensive care unit (NICU). Non-invasive skin microbiome specimens were taken repeatedly from 12 VLBW infants during treatment in NICU starting on the first day of life. All infants received benzylpenicillin and netilmicin during the first 1-5 postnatal days...
February 3, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28133874/the-cutaneous-ecosystem-the-roles-of-the-skin-microbiome-in-health-and-its-association-with-inflammatory-skin-conditions-in-humans-and-animals
#20
REVIEW
Aline Rodrigues Hoffmann
BACKGROUND: Inhabiting a sterile world is no longer an acceptable or desirable concept. Recent studies developed in the microbiome field have unveiled complex microbial populations inhabiting the skin, digestive, respiratory and reproductive tracts. Microbiome studies have opened new venues to explore the human and animal second genome, its functions and its importance in maintaining health. SKIN MICROBIOME IN HEALTH: The composition of the skin microbiome varies across different body sites and across individuals, being influenced by different host habits, including for instance age, sex, diet, hygiene and lifestyle...
February 2017: Veterinary Dermatology
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