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https://www.readbyqxmd.com/read/28805938/what-is-new-in-the-pathophysiology-of-acne-an-overview
#1
REVIEW
B Dréno
Acne is a chronic inflammatory disease of the pilosebaceous unit. Its pathophysiology includes hyperseborrhoea, abnormal follicular keratinization and Propionibacterium acnes proliferation in the pilosebaceous unit. Recent research has shed some new light on the involvement of the sebaceous gland, as well as on the pro-inflammatory activity of the cutaneous microbiome. During puberty, alteration of the sebaceous lipid profile, called dysseborrhoea, stress, irritation, cosmetics and potential dietary factors lead to inflammation and formation of different types of acne lesions...
September 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28804689/the-role-of-the-skin-and-gut-microbiome-in-psoriatic-disease
#2
Di Yan, Naiem Issa, Ladan Afifi, Caleb Jeon, Hsin Wen Chang, Wilson Liao
PURPOSE: To understand the changes in the microbiome in psoriatic disease, we conducted a systematic review of studies comparing the skin and gut microbiota in psoriatic individuals and healthy controls. FINDINGS: Our review of studies pertaining to the cutaneous microbiome showed a trend towards an increased relative abundance of Streptococcus and a decreased level of Propionibacterium in psoriasis patients compared to controls. In the gut microbiome, the ratio of Firmicutes and Bacteroidetes was perturbed in psoriatic individuals compared to healthy controls...
June 2017: Current Dermatology Reports
https://www.readbyqxmd.com/read/28800828/culture-dependent-and-culture-independent-assessment-of-spoilage-community-growth-on-vp-lamb-meat-from-packaging-to-past-end-of-shelf-life
#3
Mandeep Kaur, Hongshan Shang, Mark Tamplin, Tom Ross, John P Bowman
Packaging and storage temperature are important factors that influence the shelf-life of vacuum packed (VP) meat. In this study the shelf-life of VP bone-in lamb hind shanks stored at 8 °C and -1.2 °C was determined in parallel to analyses of starting and eventual spoilage bacterial communities via Illumina MiSeq based 16S rRNA amplicon sequencing. The mean total viable counts (TVC) and lactic acid bacterial viable counts (LAB) were observed to increase to log 7.5 CFU/cm(2) and 7 CFU/cm(2) after 6 and 42 days at 8 °C and -1...
December 2017: Food Microbiology
https://www.readbyqxmd.com/read/28792444/role-of-microbial-modulation-in-management-of-atopic-dermatitis-in-children
#4
REVIEW
Lies Hulshof, Belinda Van't Land, Aline B Sprikkelman, Johan Garssen
The pathophysiology of atopic dermatitis (AD) is multifactorial and is a complex interrelationship between skin barrier, genetic predisposition, immunologic development, skin microbiome, environmental, nutritional, pharmacological, and psychological factors. Several microbial modulations of the intestinal microbiome with pre- and/or probiotics have been used in AD management, with different clinical out-come (both positive, as well as null findings). This review provides an overview of the clinical evidence from trials in children from 2008 to 2017, aiming to evaluate the effect of dietary interventions with pre- and/or pro-biotics for the treatment of AD...
August 9, 2017: Nutrients
https://www.readbyqxmd.com/read/28789559/the-positive-benefit-of-lactobacillus-paracasei-ncc2461-st11-in-healthy-volunteers-with-moderate-to-severe-dandruff
#5
P Reygagne, P Bastien, M P Couavoux, D Philippe, M Renouf, I Castiel-Higounenc, A Gueniche
Dandruff is a common persistent, relapsing inflammatory condition affecting the scalp. An imbalanced proportion of the major bacterial and fungal populations colonising the scalp, a skin barrier dysfunction, and hyperseborrhoea are three main etiological factors of dandruff. The efficacy of Lactobacillus paracasei NCC 2461 ST11 (ST11) to manage dandruff and to restore a balanced scalp microbiome was assessed. Sixty healthy male volunteers aged 18 to 60 years with moderate to severe dandruff consumed on a daily basis a sachet containing ST11 (1×10(9) cfu) or a placebo for 56 days...
August 9, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28769875/a-stoichioproteomic-analysis-of-samples-from-the-human-microbiome-project
#6
Briana Vecchio-Pagan, Sharon Bewick, Kumar Mainali, David K Karig, William F Fagan
Ecological stoichiometry (ES) uses organism-specific elemental content to explain differences in species life histories, species interactions, community organization, environmental constraints and even ecosystem function. Although ES has been successfully applied to a range of different organisms, most emphasis on microbial ecological stoichiometry focuses on lake, ocean, and soil communities. With the recent advances in human microbiome research, however, large amounts of data are being generated that describe differences in community composition across body sites and individuals...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28766918/the-skin-microbiome-and-immune-system-potential-target-for-chemoprevention
#7
REVIEW
Mohammad Asif Sherwani, Saba Tufail, Anum Fatima Muzaffar, Nabiha Yusuf
There has been increasing interest in understanding the role of the human microbiome in skin diseases. Microbiome studies are being utilized in skin cancer research in numerous ways. Commensal bacteria are being studied as a potential tool to judge the biggest environmental risk of skin cancer, ultraviolet (UV) radiation. Owing to the recognized link of skin microbes in the process of inflammation, there have been theories linking commensal bacteria to skin cancer. Viral metagenomics has also provided insight into virus linked forms of skin cancers...
August 2, 2017: Photodermatology, Photoimmunology & Photomedicine
https://www.readbyqxmd.com/read/28762050/-research-on-the-skin-microbiome-fascinating-and-challenging
#8
R Gläser, J Harder
No abstract text is available yet for this article.
July 31, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28761935/the-skin-microbiome-of-cohabiting-couples
#9
Ashley A Ross, Andrew C Doxey, Josh D Neufeld
Distinct microbial communities inhabit individuals as part of the human skin microbiome and are continually shed to the surrounding environment. Microbial communities from 17 skin sites of 10 sexually active cohabiting couples (20 individuals) were sampled to test whether cohabitation impacts an individual's skin microbiome, leading to shared skin microbiota among partner pairs. Amplified 16S rRNA genes of bacteria and archaea from a total of 340 skin swabs were analyzed by high-throughput sequencing, and the results demonstrated that cohabitation was significantly associated with microbial community composition, although this association was greatly exceeded by characteristics of body location and individuality...
July 2017: MSystems
https://www.readbyqxmd.com/read/28750103/bacterial-diversity-in-buruli-ulcer-skin-lesions-challenges-in-the-clinical-microbiome-analysis-of-a-skin-disease
#10
Chloé Van Leuvenhaege, Koen Vandelannoote, Dissou Affolabi, Françoise Portaels, Ghislain Sopoh, Bouke C de Jong, Miriam Eddyani, Conor J Meehan
BACKGROUND: Buruli ulcer (BU) is an infectious disease caused by Mycobacterium ulcerans and considered the third most prevalent mycobacterial disease in humans. Secondary bacterial infections in open BU lesions are the main cause of pain, delayed healing and systemic illness, resulting in prolonged hospital stay. Thus, understanding the diversity of bacteria, termed the microbiome, in these open lesions is important for proper treatment. However, adequately studying the human microbiome in a clinical setting can prove difficult when investigating a neglected tropical skin disease due to its rarity and the setting...
2017: PloS One
https://www.readbyqxmd.com/read/28745729/highlights-of-skin-disease-education-foundation-s-41st-annual-hawaii-dermatology-seminar%C3%A2
#11
Kenneth B Gordon, Craig L Leonardi, Daniel E Furst, Neal Bhatia, Lawrence F Eichenfield, Katie Beleznay
New therapies, recent pathophysiological findings, and updated guidelines combined to create compelling presentations at the Skin Disease Education Foundation's 41st Annual Hawaii Dermatology Seminar™. This educational supplement summarizes the highlights of clinical sessions presented during this CME/CE conference. A growing understanding of the biology of psoriasis has facilitated the development of increasingly efficacious medications. Skin clearance used to be regarded as an impractical goal for psoriasis therapy...
June 2017: Seminars in Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28741705/house-dust-mites-as-potential-carriers-for-ige-sensitisation-to-bacterial-antigens
#12
Sheron Dzoro, Irene Mittermann, Yvonne Resch, Susanne Vrtala, Marion Nehr, Alexander M Hirschl, Gustav Wikberg, Lena Lundeberg, Catharina Johansson, Annika Scheynius, Rudolf Valenta
BACKGROUND: IgE-reactivity to antigens from gram-positive and negative bacteria is common in patients suffering from respiratory and skin manifestations of allergy, but the routes and mechanisms of sensitisation are not fully understood. The analysis of the genome, transcriptome and microbiome of house dust mites (HDM) has shown that S. aureus and E. coli species are abundant bacteria within the HDM microbiome. Therefore, our aim was to investigate if HDM are carriers of bacterial antigens leading to IgE sensitisation in patients suffering from atopic dermatitis...
July 25, 2017: Allergy
https://www.readbyqxmd.com/read/28740749/a-longitudinal-study-of-the-diabetic-skin-and-wound-microbiome
#13
Melissa Gardiner, Mauro Vicaretti, Jill Sparks, Sunaina Bansal, Stephen Bush, Michael Liu, Aaron Darling, Elizabeth Harry, Catherine M Burke
BACKGROUND: Type II diabetes is a chronic health condition which is associated with skin conditions including chronic foot ulcers and an increased incidence of skin infections. The skin microbiome is thought to play important roles in skin defence and immune functioning. Diabetes affects the skin environment, and this may perturb skin microbiome with possible implications for skin infections and wound healing. This study examines the skin and wound microbiome in type II diabetes. METHODS: Eight type II diabetic subjects with chronic foot ulcers were followed over a time course of 10 weeks, sampling from both foot skin (swabs) and wounds (swabs and debrided tissue) every two weeks...
2017: PeerJ
https://www.readbyqxmd.com/read/28726511/how-do-probiotics-and-prebiotics-function-at-distant-sites
#14
G Reid, T Abrahamsson, M Bailey, L B Bindels, R Bubnov, K Ganguli, C Martoni, C O'Neill, H M Savignac, C Stanton, N Ship, M Surette, K Tuohy, S van Hemert
The realisation that microbes regarded as beneficial to the host can impart effects at sites distant from their habitat, has raised many possibilities for treatment of diseases. The objective of a workshop hosted in Turku, Finland, by the International Scientific Association for Probiotics and Prebiotics, was to assess the evidence for these effects and the extent to which early life microbiome programming influences how the gut microbiota communicates with distant sites. In addition, we examined how probiotics and prebiotics might affect the skin, airways, heart, brain and metabolism...
July 20, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28725944/skin-bacterial-community-reorganization-following-metamorphosis-of-the-fire-bellied-toad-bombina-orientalis
#15
Arnaud Bataille, Larisa Lee-Cruz, Binu Tripathi, Bruce Waldman
In organisms with complex life histories, dramatic changes in microbial community structure may occur with host development and immune system maturation. Amphibian host susceptibility to diseases such as chytridiomycosis may be affected by the reorganization of skin microbial community structure that occurs during metamorphosis. We tracked changes in the bacterial communities inhabiting skin of Korean fire-bellied toads (Bombina orientalis) that we infected as tadpoles with different strains of Batrachochytrium dendrobatidis (Bd), the pathogenic fungus that causes chytridiomycosis...
July 19, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28721083/effect-of-a-lotion-containing-the-heat-treated-probiotic-strain-lactobacillus-johnsonii-ncc-533-on-staphylococcus-aureus-colonization-in-atopic-dermatitis
#16
Sandrine Blanchet-Réthoré, Valérie Bourdès, Annick Mercenier, Cyrille H Haddar, Paul O Verhoeven, Philippe Andres
OBJECTIVE: Staphylococcus aureus dominates the skin microbiota in patients with atopic dermatitis (AD), with bacterial loads correlating with disease severity. The aim of this exploratory study was to investigate the effect of a cosmetic lotion containing heat-treated Lactobacillus johnsonii NCC 533 (HT La1) on S. aureus colonization in AD patients. METHODS: This open-label, multicenter study was performed in AD patients in Germany. First, detection of S. aureus was performed in all patients using the swab or scrub-wash method of sampling, followed by quantitative culture or quantitative polymerase chain reaction...
2017: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/28713358/aquarium-viromes-viromes-of-human-managed-aquatic-systems
#17
Yiseul Kim, William Van Bonn, Tiong G Aw, Joan B Rose
An aquarium ecosystem is home to many animal species providing conditions similar to native aquatic habitats but under highly controlled management. With a growing interest in understanding the interaction of microbiomes and resident animal health within aquarium environments, we undertook a metagenomic survey of viromes in seven aquarium systems with differing physicochemical and resident animal profiles. Our results show that a diverse array of viruses was represented in aquarium viromes, many of which were widespread in different aquarium systems (27 common viral families in all of the aquarium systems)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28711782/the-human-microbiome
#18
REVIEW
Hubert E Blum
Until recently, human microbiology was based on the identification of single microbes, such as bacteria, fungi and viruses, frequently isolated from patients with acute or chronic infections. Novel culture-independent molecular biochemical analyses (genomics, transcriptomics, proteomics, metabolomics) allow today to detect and classify the diverse microorganisms in a given ecosystem (microbiota), such as the gastrointestinal tract, the skin, the airway system, the urogenital tract and others, and to assess all genomes in these ecosystems (microbiome) as well as their gene products...
July 13, 2017: Advances in Medical Sciences
https://www.readbyqxmd.com/read/28704437/impact-of-environmental-microbiota-on-human-microbiota-of-workers-in-academic-mouse-research-facilities-an-observational-study
#19
Peggy S Lai, Joseph G Allen, Diane S Hutchinson, Nadim J Ajami, Joseph F Petrosino, Thomas Winters, Christopher Hug, Gary R Wartenberg, Jose Vallarino, David C Christiani
OBJECTIVES: To characterize the microbial environment of workers in academic mouse research facilities using endotoxin, 16S qPCR, and 16S amplicon sequencing. To determine whether the work microbiome contributes to the human microbiome of workers. METHODS: We performed area air sampling from the animal rooms, dirty, middle, and setup cage wash locations in four academic mouse research facilities. 10 workers in the dirty cage wash area underwent personal air sampling as well as repeated collection of nasal, oral, and skin samples before and after the work shift...
2017: PloS One
https://www.readbyqxmd.com/read/28690602/geography-ethnicity-or-subsistence-specific-variations-in-human-microbiome-composition-and-diversity
#20
REVIEW
Vinod K Gupta, Sandip Paul, Chitra Dutta
One of the fundamental issues in the microbiome research is characterization of the healthy human microbiota. Recent studies have elucidated substantial divergences in the microbiome structure between healthy individuals from different race and ethnicity. This review provides a comprehensive account of such geography, ethnicity or life-style-specific variations in healthy microbiome at five major body habitats-Gut, Oral-cavity, Respiratory Tract, Skin, and Urogenital Tract (UGT). The review focuses on the general trend in the human microbiome evolution-a gradual transition in the gross compositional structure along with a continual decrease in diversity of the microbiome, especially of the gut microbiome, as the human populations passed through three stages of subsistence like foraging, rural farming and industrialized urban western life...
2017: Frontiers in Microbiology
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