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Skin microbiome

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https://www.readbyqxmd.com/read/28533691/microbiome-disruption-and-recovery-in-the-fish-gambusia-affinis-following-exposure-to-broad-spectrum-antibiotic
#1
Jeanette M Carlson, Annie B Leonard, Embriette R Hyde, Joseph F Petrosino, Todd P Primm
Antibiotics are a relatively common disturbance to the normal microbiota of humans and agricultural animals, sometimes resulting in severe side effects such as antibiotic-associated enterocolitis. Gambusia affinis was used as a vertebrate model for effects of a broad-spectrum antibiotic, rifampicin, on the skin and gut mucosal microbiomes. The fish were exposed to the antibiotic in the water column for 1 week, and then monitored during recovery. As observed via culture, viable counts from the skin microbiome dropped strongly yet returned to pretreatment levels by 1...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28513546/edible-plants-and-their-influence-on-the-gut-microbiome-and-acne
#2
REVIEW
Ashley K Clark, Kelly N Haas, Raja K Sivamani
Acne vulgaris affects most people at some point in their lives. Due to unclear etiology, likely with multiple factors, targeted and low-risk treatments have yet to be developed. In this review, we explore the multiple causes of acne and how plant-based foods and supplements can control these. The proposed causative factors include insulin resistance, sex hormone imbalances, inflammation and microbial dysbiosis. There is an emerging body of work on the human gut microbiome and how it mediates feedback between the foods we eat and our bodies...
May 17, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28503372/endosymbiont-interference-and-microbial-diversity-of-the-pacific-coast-tick-dermacentor-occidentalis-in-san-diego-county-california
#3
Nikos Gurfield, Saran Grewal, Lynnie S Cua, Pedro J Torres, Scott T Kelley
The Pacific coast tick, Dermacentor occidentalis Marx, is found throughout California and can harbor agents that cause human diseases such as anaplasmosis, ehrlichiosis, tularemia, Rocky Mountain spotted fever and rickettsiosis 364D. Previous studies have demonstrated that nonpathogenic endosymbiotic bacteria can interfere with Rickettsia co-infections in other tick species. We hypothesized that within D. occidentalis ticks, interference may exist between different nonpathogenic endosymbiotic or nonendosymbiotic bacteria and Spotted Fever group Rickettsia (SFGR)...
2017: PeerJ
https://www.readbyqxmd.com/read/28492938/association-between-breast-milk-bacterial-communities-and-establishment-and-development-of-the-infant-gut-microbiome
#4
Pia S Pannaraj, Fan Li, Chiara Cerini, Jeffrey M Bender, Shangxin Yang, Adrienne Rollie, Helty Adisetiyo, Sara Zabih, Pamela J Lincez, Kyle Bittinger, Aubrey Bailey, Frederic D Bushman, John W Sleasman, Grace M Aldrovandi
Importance: Establishment of the infant microbiome has lifelong implications on health and immunity. Gut microbiota of breastfed compared with nonbreastfed individuals differ during infancy as well as into adulthood. Breast milk contains a diverse population of bacteria, but little is known about the vertical transfer of bacteria from mother to infant by breastfeeding. Objective: To determine the association between the maternal breast milk and areolar skin and infant gut bacterial communities...
May 8, 2017: JAMA Pediatrics
https://www.readbyqxmd.com/read/28489411/gcoda-conditional-dependence-network-inference-for-compositional-data
#5
Huaying Fang, Chengcheng Huang, Hongyu Zhao, Minghua Deng
The increasing quality and the reducing cost of high-throughput sequencing technologies for 16S rRNA gene profiling enable researchers to directly analyze microbe communities in natural environments. The direct interactions among microbial species of a given ecological system can help us understand the principles of community assembly and maintenance under various conditions. Compositionality and dimensionality of microbiome data are two main challenges for inferring the direct interaction network of microbes...
May 10, 2017: Journal of Computational Biology: a Journal of Computational Molecular Cell Biology
https://www.readbyqxmd.com/read/28482010/study-toward-resolving-the-controversy-over-the-definition-of-allergic-fungal-rhinosinusitis
#6
Aleksandra Barac, Goran Stevanovic, Marina Pekmezovic, Zoran Rakocevic, Rajica Stosovic, Boban Erovic, Vesna Tomic Spiric
Dysbiosis of the microbiome on the airway mucosa leads to the development of chronic inflammatory and allergic disorders. The aim of this study was to consider the potential diagnostic criteria for allergic fungal rhinosinusitis (AFRS) and nonallergic fungal rhinosinusitis (FRS), and the role of fungal presence in an environment for the development of AFRS. In this study, 136 patients were divided into two groups: patients with positive specific immunoglobulin E (sIgE) and fungal finding (AFRS group), and patients with negative sIgE and positive fungal finding (FRS group)...
May 6, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28466089/intraspecific-variation-in-the-skin-associated-microbiome-of-a-terrestrial-salamander
#7
Sofia R Prado-Irwin, Alicia K Bird, Andrew G Zink, Vance T Vredenburg
Resident microbial communities living on amphibian skin can have significant effects on host health, yet the basic ecology of the host-microbiome relationship of many amphibian taxa is poorly understood. We characterized intraspecific variation in the skin microbiome of the salamander Ensatina eschscholtzii xanthoptica, a subspecies composed of four genetically distinct populations distributed throughout the San Francisco Bay Area and the Sierra Nevada mountains in California, USA. We found that salamanders from four geographically and genetically isolated populations harbor similar skin microbial communities, which are dominated by a common core set of bacterial taxa...
May 2, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28464028/crude-oil-impairs-immune-function-and-increases-susceptibility-to-pathogenic-bacteria-in-southern-flounder
#8
Keith M Bayha, Natalie Ortell, Caitlin N Ryan, Kimberly J Griffitt, Michelle Krasnec, Johnny Sena, Thiruvarangan Ramaraj, Ryan Takeshita, Gregory D Mayer, Faye Schilkey, Robert J Griffitt
Exposure to crude oil or its individual constituents can have detrimental impacts on fish species, including impairment of the immune response. Increased observations of skin lesions in northern Gulf of Mexico fish during the 2010 Deepwater Horizon oil spill indicated the possibility of oil-induced immunocompromisation resulting in bacterial or viral infection. This study used a full factorial design of oil exposure and bacterial challenge to examine how oil exposure impairs southern flounder (Paralichthys lethostigma) immune function and increases susceptibility to the bacteria Vibrio anguillarum, a causative agent of vibriosis...
2017: PloS One
https://www.readbyqxmd.com/read/28448623/development-of-the-cutaneous-microbiome-in-the-preterm-infant-a-prospective-longitudinal-study
#9
Mohan Pammi, Jacqueline L O'Brien, Nadim J Ajami, Matthew C Wong, James Versalovic, Joseph F Petrosino
BACKGROUND: Neonatal sepsis in preterm infants is often due to organisms that colonize the skin including Staphylococcus spp. and Candida spp. Development and maturation of the skin microbiome in the neonatal period, especially in preterm infants, may be critical in preventing colonization with pathogens and subsequent progression to neonatal sepsis. Development of the skin microbiome in preterm infants or its determinants in the first 4 weeks of life has not been evaluated. METHODS: We evaluated the skin microbiome from three body sites, antecubital fossa, forehead and gluteal region, in a prospective cohort of 15 preterm (birth weight < 1500 g and < 32 weeks of gestation) and 15 term neonates...
2017: PloS One
https://www.readbyqxmd.com/read/28418589/a-distinct-cutaneous-microbiota-pofile-in-autoimmune-bullous-disease-patients
#10
Mor Miodovnik, Axel Künstner, Ewan A Langan, Detlef Zillikens, Regine Gläser, Eli Sprecher, John F Baines, Enno Schmidt, Saleh M Ibrahim
Bullous Pemphigoid (BP) is the most common autoimmune blistering disease in Europe. As both the incidence of the disease and the relative proportion of the elderly population continue to rise, it represents a significant medical burden. Whereas some progress has been achieved in defining genetic risk factors for autoimmune blistering diseases, no environmental agent has been conclusively identified. Emerging evidence suggests that host immunity may influence the skin microbiota while the latter modulates cutaneous immunity...
April 18, 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28418094/the-skin-microbiome-of-the-common-thresher-shark-alopias-vulpinus-has-low-taxonomic-and-potential-metabolic-%C3%AE-diversity
#11
Michael P Doane, John Matthew Haggerty, Dovi Kacev, Bhavya Papudeshi, Elizabeth A Dinsdale
The health of sharks is linked with emergent properties of its microbiome. Most marine organisms have mucus overlying the skin, but shark have dermal denticles that protrude above the mucus. We characterized the microbiome from the skin of the common thresher shark (Alopias vulpinus) to investigate the structure and composition of the skin microbiome. An average of 618,812 reads per metagenomic library contained open reading frames (80.9% ± S.D. 0.44%), and 7.6 to 12.8% matched known protein sequences...
April 18, 2017: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/28411842/the-molecular-revolution-in-cutaneous-biology-investigating-the-skin%C3%A2-microbiome
#12
REVIEW
Heidi H Kong, Julia A Segre
Building upon the knowledge garnered from investigations utilizing traditional culturing methods, advances in sequencing technologies have catalyzed a revolution in studying human-associated microbes: bacteria, fungi and viruses. Skin microbiome research in healthy individuals and patients with dermatologic disorders has provided insights into the complexity and biogeography of human skin microbes. The continual developments in sequencing and analyses will provide increasingly sophisticated tools to interrogate human-associated microbes, ultimately to improve our understanding of health and disease...
May 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28395897/human-skin-is-the-largest-epithelial-surface-for%C3%A2-interaction%C3%A2-with-microbes
#13
Richard L Gallo
Human skin contains an abundant and diverse population of microbial organisms. Many of these microbes inhabit follicular structures of the skin. Furthermore, numerous studies have shown that the interaction of some members of the skin microbiome with host cells will result in changes in cell function. However, estimates of the potential for the microbiome to influence human health through skin have ignored the inner follicular surface, and therefore vastly underestimated the potential of the skin microbiome to have a systemic effect on the human body...
April 8, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28391505/bacterial-communities-on-facial-skin-of-teenage-and-elderly-thai-females
#14
Naraporn Somboonna, Alisa Wilantho, Chutika Srisuttiyakorn, Anunchai Assawamakin, Sissades Tongsima
The Human Microbiome Project was first established to understand the roles of human-associated microbes to human health and disease. This study presents preliminary findings of Thai female facial skin microbiome using three pooled samples from groups of skin microbiome profiles, namely (1) healthy and (2) acne-prone young adults (teenage.hea and teenage.acn) and (3) healthy elderly adults (elderly.hea) based on standard dermatological criteria. These samples were sequenced using 454-pyrosequencing targeting 16S rRNA (V3-V4 regions)...
April 8, 2017: Archives of Microbiology
https://www.readbyqxmd.com/read/28390799/skin-microbiome-and-mast-cells
#15
REVIEW
Satomi Igawa, Anna Di Nardo
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March 23, 2017: Translational Research: the Journal of Laboratory and Clinical Medicine
https://www.readbyqxmd.com/read/28387770/amphibian-skin-microbiota-exhibits-temporal-variation-in-community-structure-but-stability-of-predicted-bd-inhibitory-function
#16
Molly C Bletz, R G Bina Perl, Bianca Tc Bobowski, Laura M Japke, Christoph C Tebbe, Anja B Dohrmann, Sabin Bhuju, Robert Geffers, Michael Jarek, Miguel Vences
Host-associated microbiomes are increasingly recognized to contribute to host disease resistance; the temporal dynamics of their community structure and function, however, are poorly understood. We investigated the cutaneous bacterial communities of three newt species, Ichthyosaura alpestris, Lissotriton vulgaris and Triturus cristatus, at approximately weekly intervals for 3 months using 16S ribosomal RNA amplicon sequencing. We hypothesized cutaneous microbiota would vary across time, and that such variation would be linked to changes in predicted fungal-inhibitory function...
April 7, 2017: ISME Journal
https://www.readbyqxmd.com/read/28384336/filthy-lucre-a-metagenomic-pilot-study-of-microbes-found-on-circulating-currency-in-new-york-city
#17
Julia M Maritz, Steven A Sullivan, Robert J Prill, Emre Aksoy, Paul Scheid, Jane M Carlton
BACKGROUND: Paper currency by its very nature is frequently transferred from one person to another and represents an important medium for human contact with-and potential exchange of-microbes. In this pilot study, we swabbed circulating $1 bills obtained from a New York City bank in February (Winter) and June (Summer) 2013 and used shotgun metagenomic sequencing to profile the communities found on their surface. Using basic culture conditions, we also tested whether viable microbes could be recovered from bills...
2017: PloS One
https://www.readbyqxmd.com/read/28379372/the-microbiological-landscape-of-anaerobic-infections-in-hidradenitis-suppurativa-a-prospective-metagenomic-study
#18
Hélène Guet-Revillet, Jean-Philippe Jais, Marie-Noelle Ungeheuer, Hélène Coignard-Biehler, Sabine Duchatelet, Maïa Delage, Thi Lam, Alain Hovnanian, Olivier Lortholary, Xavier Nassif, Aude Nassif, Olivier Join-Lambert
Background.: Hidradenitis suppurativa (HS) is a frequent and severe disease of the skin, characterized by recurrent or chronic skinfolds suppurative lesions with a high impact on quality of life. Although considered inflammatory, antimicrobial treatments can improve or lead to clinical remission of HS, suggesting triggering microbial factors. Indeed, mixed anaerobic microbiota are associated with a majority of HS lesions. The aim of this study was to characterize the landscape of anaerobic infections in HS using high throughput sequencing...
April 1, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28378121/toxification-of-polycyclic-aromatic-hydrocarbons-by-commensal-bacteria-from-human-skin
#19
Juliane Sowada, Lisa Lemoine, Karsten Schön, Christoph Hutzler, Andreas Luch, Tewes Tralau
The ubiquitous occurrence of polycyclic aromatic hydrocarbons (PAHs) leads to constant human exposure at low levels. Toxicologically relevant are especially the high-molecular weight substances due to their (pro-)carcinogenic potential. Following ingestion or uptake, the eukaryotic phase I metabolism often activates these substances to become potent DNA binders, and unsurprisingly metabolism and DNA-adduct formation of model substances such as benzo[a]pyrene (B[a]P) are well studied. However, apart from being subjected to eukaryotic transformations PAHs are also carbon and energy sources for the myriads of commensal microbes inhabiting man's every surface...
April 4, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28375932/outstanding-animal-studies-in-allergy-ii-from-atopic-barrier-and-microbiome-to-allergen-specific-immunotherapy
#20
Erika Jensen-Jarolim, Isabella Pali-Schöll, Franziska Roth-Walter
PURPOSE OF REVIEW: Animal studies published within the past 18 months were assessed, focusing on innate and specific immunomodulation, providing knowledge of high translational relevance for human atopic and allergic diseases. RECENT FINDINGS: Allergic companion animals represent alternative models, but most studies were done in mice. Atopic dermatitis mouse models were refined by the utilization of cytokines like IL-23 and relevant skin allergens or enzymes. A novel IL-6 reporter mouse allows biomonitoring of inflammation...
June 2017: Current Opinion in Allergy and Clinical Immunology
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