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https://www.readbyqxmd.com/read/29341254/do-cutibacterium-acnes-and-staphylococcus-aureus-define-two-different-types-of-folliculitis
#1
C Frenard, M-A Dagnelie, A Khammari, M Saint-Jean, A Boisrobert, S Corvec, B Dreno
Scalp folliculitis is a common disorder in dermatology. Its clinical spectrum includes three main forms: "simple" folliculitis with an ad integrum evolution without sequellar alopecia, Quinquaud's folliculitis decalvans, and acne keloidalis nuchae. The pathophysiology of scalp folliculitis remains poorly understood. The assumptions would be infectious and/or inflammatory causes possibly involving Staphylococcus aureus and Propionibacterium acnes (now referred to as Cutibacterium acnes according to a new taxonomic classification)...
January 16, 2018: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/29332945/the-human-skin-microbiome
#2
REVIEW
Allyson L Byrd, Yasmine Belkaid, Julia A Segre
Functioning as the exterior interface of the human body with the environment, skin acts as a physical barrier to prevent the invasion of foreign pathogens while providing a home to the commensal microbiota. The harsh physical landscape of skin, particularly the desiccated, nutrient-poor, acidic environment, also contributes to the adversity that pathogens face when colonizing human skin. Despite this, the skin is colonized by a diverse microbiota. In this Review, we describe amplicon and shotgun metagenomic DNA sequencing studies that have been used to assess the taxonomic diversity of microorganisms that are associated with skin from the kingdom to the strain level...
January 15, 2018: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/29325951/shunt-nephritis-an-increasingly-unfamiliar-diagnosis
#3
Tessa A Harland, Ken R Winston, Anna J Jovanovich, Richard J Johnson
BACKGROUND: Shunt nephritis is a rare, reversible immune-complex mediated complication of CSF shunt infection that can progress to end-stage renal disease and even death if diagnosis is delayed. CASE DESCRIPTION: The present case report details the manifestation and clinical course of shunt nephritis in a 50-year old patient who presented with symptoms of nephrotic syndrome 30 years after ventriculo-jugular shunt placement. Diagnosis was delayed due to initial negative CSF and blood cultures but later a CSF culture was positive for Propionibacterium acnes...
January 8, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29323102/propionibacterium-acnes-induces-intervertebral-disc-degeneration-by-promoting-nucleus-pulposus-cell-apoptosis-via-the-tlr2-jnk-mitochondrial-mediated-pathway
#4
Yazhou Lin, Yucheng Jiao, Ye Yuan, Zezhu Zhou, Yuehuan Zheng, Jiaqi Xiao, Changwei Li, Zhe Chen, Peng Cao
Evidence suggests that intervertebral disc degeneration (IVDD) can be induced by Propionibacterium acnes (P. acnes), although the underlying mechanisms are unclear. In this study, we analyzed the pathological changes in degenerated human intervertebral discs (IVDs) infected with P. acnes. Compared with P. acnes-negative samples, P. acnes-positive IVDs showed increased apoptosis of nucleus pulposus cells (NPCs) concomitant with severe IVDD. Then, a P. acnes-inoculated IVD animal model was established, and severe IVDD was induced by P...
January 10, 2018: Emerging Microbes & Infections
https://www.readbyqxmd.com/read/29322275/outcome-of-polymerase-chain-reaction-pcr-analysis-in-100-suspected-cases-of-infectious-uveitis
#5
Ranju Kharel Sitaula, M K Janani, H N Madhavan, Jyotirmay Biswas
BACKGROUND: Polymerase chain reaction (PCR) analysis is an important tool in the diagnosis of infectious uveitis. A retrospective, interventional study of PCR analysis of ocular fluid in suspected infectious uveitis cases between January 2014 to July 2016 was done. Nested, real-time and broad range PCR was performed for detection of the genome of Mycobacterium tuberculosis, herpes virus family, Chikungunya virus, Toxoplasma gondii, fungus, eubacterium and propionibacterium acne. RESULTS: Total of 100 cases included, mean age was 39...
January 10, 2018: Journal of Ophthalmic Inflammation and Infection
https://www.readbyqxmd.com/read/29313157/microbial-community-response-reveals-underlying-mechanism-of-industrial-scale-manganese-sand-biofilters-used-for-the-simultaneous-removal-of-iron-manganese-and-ammonia-from-groundwater
#6
Yu Zhang, Rui Sun, Aijuan Zhou, Jiaguang Zhang, Yunbo Luan, Jianna Jia, Xiuping Yue, Jie Zhang
Most studies have employed aeration-biofiltration process for the simultaneous removal of iron, manganese and ammonia in groundwater. However, what's inside the "black box", i.e., the potential contribution of functional microorganisms behavior and interactions have seldom been investigated. Moreover, little attention has been paid to the correlations between environmental variables and functional microorganisms. In this study, the performance of industrial-scale biofilters for the contaminated groundwater treatment was studied...
January 8, 2018: AMB Express
https://www.readbyqxmd.com/read/29312814/on-revealing-the-gene-targets-of-ebola-virus-micrornas-involved-in-the-human-skin-microbiome
#7
Pei-Chun Hsu, Bin-Hao Chiou, Chun-Ming Huang
Ebola virus, a negative-sense single-stranded RNA virus, causes severe viral hemorrhagic fever and has a high mortality rate. Histopathological and immunopathological analyses of Ebola virus have revealed that histopathological changes in skin tissue are associated with various degrees of endothelial cell swelling and necrosis. The interactions of microbes within or on a host are a crucial for the skin immune shield. The discovery of microRNAs (miRNAs) in Ebola virus implies that immune escape, endothelial cell rupture, and tissue dissolution during Ebola virus infection are a result of the effects of Ebola virus miRNAs...
2018: PeerJ
https://www.readbyqxmd.com/read/29296168/glenohumeral-joint-sepsis-after-joint-injection-through-a-new-tattoo
#8
Richard Becker, Sean Haight
We report a case of Propionibacterium acnes septic arthritis of a shoulder following two joint access procedures. Methodical investigation of these two procedures was performed using the Joint Commission root cause analysis matrix, which involved examination of protocols, interviews with technologists and physicians, and inspection of the procedure rooms and equipment. No procedural error or other causal factor for infection was found other than the injection through a five day-old tattoo during the first procedure...
November 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29280824/a-case-of-relapsing-polychondritis-mimicking-hemophagocytic-lymphohistiocytosis-after-propionibacterium-acnes-infection
#9
William E Monaco, Carey J Field, Thomas H Taylor
We describe a 69-year-old man who presented with a right sternocleidomastoid intramuscular abscess that grew Propionibacterium acnes. Despite initial improvement with antibiotics, he subsequently developed signs and symptoms fulfilling diagnostic criteria for hemophagocytic lymphohistiocytosis (HLH)-fevers, cytopenias, hyperferritinemia, splenomegaly, and low natural killer cell activity. The patient improved spontaneously but at outpatient follow-up complained of erythema over the bridge of his nose as well as bilateral ear redness sparing the earlobes at which point relapsing polychondritis (RP) was diagnosed...
December 27, 2017: Journal of Clinical Rheumatology: Practical Reports on Rheumatic & Musculoskeletal Diseases
https://www.readbyqxmd.com/read/29279847/bacterial-diversity-in-feline-conjunctiva-based-on-16s-rrna-gene-sequence-analysis-a-pilot-study
#10
Katarzyna Płoneczka-Janeczko, Jacek Bania, Karolina Bierowiec, Maciej Kiełbowicz, Zdzisław Kiełbowicz
Changes in the microbial populations in the conjunctival sacs of animals have traditionally been evaluated using conventional microbiology techniques. The goal of this study was to examine the suitability of a methodology which may reveal a previously unknown microbiome inhabiting feline conjunctival membranes. In the present study, we determined the microbial diversity in feline conjunctivas based on 16S rRNA gene sequence analysis. Five taxa not described earlier in veterinary ophthalmology (i.e., Staphylococcus caprae, Staphylococcus succinus, Propionibacterium acnes, Psychrobacter faecalis, and Bacillus subtilis) were identified in feline conjunctivas with a high similarity (99-100%)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29273721/topographical-diversity-of-common-skin-microflora-and-its-association-with-skin-environment-type-an-observational-study-in-chinese-women
#11
Xi Li, Chao Yuan, Licong Xing, Philippe Humbert
This study evaluated cutaneous microbial distribution, and microbial co-occurrence at different body sites and skin environments in Chinese women (39.6 ± 11.9 years, N = 100) during the winter season. Microbial distribution (Propionibacterium acnes, Staphylococcus aureus, Staphylococcus epidermidis, Lactobacillus, Pseudomonadaceae, and Malassezia furfur), association with biomarkers (antimicrobial peptides: LL-37, β-defensins [HBD-2, HBD-3]), and claudin-1) and skin biophysical parameters (transepidermal water loss, pH, skin scaliness and roughness, sebum and hydration levels) were also determined...
December 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29241870/disseminated-propionibacterium-acnes-infection-in-a-42-year-old-hiv-positive-man
#12
Ana Gómez-Berrocal, Jesús Sanz-Sanz
No abstract text is available yet for this article.
December 11, 2017: Medicina Clínica
https://www.readbyqxmd.com/read/29235673/long-term-administration-of-oral-macrolides-for-acne-treatment-increases-macrolide-resistant-propionibacterium-acnes
#13
Keisuke Nakase, Yuhei Okamoto, Sae Aoki, Norihisa Noguchi
Macrolide-resistant Propionibacterium acnes are frequently isolated from patients with acne vulgaris, and the most resistant isolates (>90% resistance) have the 23S rRNA mutation. An increase in resistant P. acnes with this mutation is thought to be caused by the inappropriate use of antimicrobials. Therefore, we studied the mutation frequency of macrolide resistance in P. acnes in vitro. When P. acnes mutants were exposed to clarithromycin after being incubated in broth without antimicrobials, resistant mutants with the 23S rRNA mutation were not isolated...
December 13, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/29225362/frequency-of-bacetrial-content-finding-in-persistant-periapical-lesions
#14
Joško Grgurević, Ana Ivanišević Malčić, Arjana Tambić Andrašević, Goranka Prpić Mehičić, Sania Kuzmac, Silvana Jukić
Objectives: To determine the percentage of persistant apical lesions positive for bacterial nucleic acids, to detect microorganisms difficult to cultivate in persistant apical lesions by PCR and relate them to endodontic failure, clinical symptoms and diabetes mellitus. Materials and methods: The samples of persistent apical lesions were collected during apicoectomy. Bacterial ubiquitous primer 16S rRNA was used to detect 16S ribosomal RNA in 36 samples. A species-specific PCR was performed with primers targeted to the bacterial 16S rRNA genes of Prevotella Nigrescens, Pseudoramibacter alactolyticus, and Propionobacterium propionicum...
September 2017: Acta Stomatologica Croatica
https://www.readbyqxmd.com/read/29216202/composition-and-variation-of-respiratory-microbiota-in-healthy-military-personnel
#15
Jun Hang, Nela Zavaljevski, Yu Yang, Valmik Desai, Richard C Ruck, Louis R Macareo, Richard G Jarman, Jaques Reifman, Robert A Kuschner, Paul B Keiser
Certain occupational and geographical exposures have been associated with an increased risk of lung disease. As a baseline for future studies, we sought to characterize the upper respiratory microbiomes of healthy military personnel in a garrison environment. Nasal, oropharyngeal, and nasopharyngeal swabs were collected from 50 healthy active duty volunteers eight times over the course of one year (1107 swabs, completion rate = 92.25%) and subjected to pyrosequencing of the V1-V3 region of 16S rDNA. Respiratory bacterial taxa were characterized at the genus level, using QIIME 1...
2017: PloS One
https://www.readbyqxmd.com/read/29205339/acne-in-late-adolescence-and-risk-of-prostate-cancer
#16
Henrik Ugge, Ruzan Udumyan, Jessica Carlsson, Ove Andrén, Scott Montgomery, Sabina Davidsson, Katja Fall
Accumulating evidence suggest that Propionibacterium acnes may play a role in prostate carcinogenesis, but data are so far limited and inconclusive. The aim of this population-based cohort study was therefore to test whether presence of acne vulgaris during late adolescence is associated with an increased risk of prostate cancer later in life. We identified a large cohort of young men born in Sweden between 1952 and 1956, who underwent mandatory assessment for military conscription around the age of 18 (n = 243,187)...
December 4, 2017: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29203871/cp-and-cp-pgn-protect-mice-against-mrsa-infection-by-inducing-m1-macrophages
#17
Yang Zhang, Xiang-Xiang Li, Yuan Ma, Jie Xu, Li-Na Zhao, Xue-Feng Qian, Xian-Feng Zhang, Jin-Fang Shi, Qing-Zhen Han
Corynebacterium pyruviciproducens (C. pyruviciproducens, CP), as a newly discovered immunomodulator, has been confirmed to have a stronger immunoregulation than Propionibacterium acnes (P. acnes) of the traditional immune adjuvant, by previous experiments with model antigen ovalbumin and sheep red blood cells. Here, it was designed to assess its ability to resist methicillin-resistant Staphylococcus aureus (MRSA), since MRSA as a vital gram positive pathogen is characterized by high morbidity and mortality...
December 4, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29203432/propionibacterium-acnes-prosthetic-joint-infection-diagnosis-and-treatment
#18
REVIEW
P Boisrenoult
Propionibacterium acnes is a commensal skin bacterium, regularly implicated in prosthetic joint infection, particularly of the shoulder. Diagnosis has been improved by progress in bacteriological techniques: longer culture time, liquid medium culture, MALDI-TOF mass spectrography, and universal 16S rRNA PCR, associated by some authors to sonication of ablated implants. P. acnes pathogenicity involves many virulence factors, notably including biofilm formation. P. acnes may lead to infection that is clinically evident or, frequently, relatively asymptomatic...
December 1, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29201018/prevalence-of-flp-pili-encoding-plasmids-in-cutibacterium-acnes-isolates-obtained-from-prostatic-tissue
#19
Sabina Davidsson, Jessica Carlsson, Paula Mölling, Natyra Gashi, Ove Andrén, Swen-Olof Andersson, Elzbieta Brzuszkiewicz, Anja Poehlein, Munir A Al-Zeer, Volker Brinkmann, Carsten Scavenius, Seven Nazipi, Bo Söderquist, Holger Brüggemann
Inflammation is one of the hallmarks of prostate cancer. The origin of inflammation is unknown, but microbial infections are suspected to play a role. In previous studies, the Gram-positive, low virulent bacterium Cutibacterium (formerly Propionibacterium) acnes was frequently isolated from prostatic tissue. It is unclear if the presence of the bacterium represents a true infection or a contamination. Here we investigated Cutibacterium acnes type II, also called subspecies defendens, which is the most prevalent type among prostatic C...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29200756/g2a-attenuates-propionibacterium-acnes-induction-of-inflammatory-cytokines-in-human-monocytes
#20
Andrew J Park, George W Agak, Min Qin, Lisa D Hisaw, Aslan Pirouz, Stephanie Kao, Laura J Marinelli, Hermes J Garbán, Diane Thiboutot, Philip T Liu, Jenny Kim
Background: Acne vulgaris is a disease of the pilosebaceous unit characterized by increased sebum production, hyperkeratinization, and immune responses to Propionibacterium acnes (PA). Here, we explore a possible mechanism by which a lipid receptor, G2A, regulates immune responses to a commensal bacterium. Objective: To elucidate the inflammatory properties of G2A in monocytes in response to PA stimulation. Furthermore, our study sought to investigate pathways by which lipids modulate immune responses in response to PA...
December 2017: Annals of Dermatology
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