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https://www.readbyqxmd.com/read/28723278/a-case-of-cannabinoid-hyperemesis-syndrome-with-heliobacter-pylori-and-pre-eclampsia-during-pregnancy
#1
Madeline Manning Meurer, Kalyan Chakrala, Dinesh Gowda, Charles Burns, Randall Kelly, Natalia Schlabritz-Loutsevitch
The condition termed cannabinoid hyperemesis syndrome (CHS) was characterized a decade ago by Allen et al. and includes cyclic episodes of nausea and vomiting and the learned behavior of hot bathing in individuals with chronic cannabis abuse. During pregnancy, the differential diagnosis of this syndrome is challenging since it can be masked by typical symptoms of early pregnancy or by hyperemesis gravidarum, a complication of early pregnancy associated with excessive nausea and vomiting. We herein describe the case of a 21-year-old primigravida patient diagnosed with hyperemesis gravidarum at 6 weeks of gestation and with pre-eclampsia at 35 weeks...
July 19, 2017: Substance Abuse
https://www.readbyqxmd.com/read/28722719/erratum-nlrp12-attenuates-colon-inflammation-by-maintaining-colonic-microbial-diversity-and-promoting-protective-commensal-bacterial-growth
#2
Liang Chen, Justin E Wilson, Mark J Koenigsknecht, Wei-Chun Chou, Stephanie A Montgomery, Agnieszka D Truax, W June Brickey, Christopher D Packey, Nitsan Maharshak, Glenn K Matsushima, Scott E Plevy, Vincent B Young, R Balfour Sartor, Jenny P-Y Ting
No abstract text is available yet for this article.
July 19, 2017: Nature Immunology
https://www.readbyqxmd.com/read/28722586/continuous-excretion-of-leptospira-borgpetersenii-ballum-in-mice-assessed-by-viability-quantitative-polymerase-chain-reaction
#3
Marie-Estelle Soupé-Gilbert, Emilie Bierque, Sophie Geroult, Magali Teurlai, Cyrille Goarant
Rodents are the main reservoir animals of leptospirosis. In this study, we characterized and quantified the urinary excretion dynamics of Leptospira by Mus musculus infected with 2 × 10(8) virulent Leptospira borgpetersenii serogroup Ballum. Each micturition was collected separately in metabolic cages, at 12 time points from 7 to 117 days post-infection (dpi). We detected Leptospira in all urine samples collected (up to 8 per time point per mouse) proving that Leptospira excretion is continuous with ca. 90% live L...
July 17, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28721502/mucin-cross-feeding-of-infant-bifidobacteria-and-eubacterium-hallii
#4
Vera Bunesova, Christophe Lacroix, Clarissa Schwab
Mucus production is initiated before birth and provides mucin glycans to the infant gut microbiota. Bifidobacteria are the major bacterial group in the feces of vaginally delivered and breast milk-fed infants. Among the bifidobacteria, only Bifidobacterium bifidum is able to degrade mucin and to release monosaccharides which can be used by other gut microbes colonizing the infant gut. Eubacterium hallii is an early occurring commensal that produces butyrate and propionate from fermentation metabolites but that cannot degrade complex oligo- and polysaccharides...
July 18, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28721477/imipenem-resistant-gram-negative-bacterial-isolates-carried-by-persons-upon-medical-examination-in-korea
#5
So Yeon Kim, Sang Yop Shin, Ji-Young Rhee, Kwan Soo Ko
Carbapenem-resistant Gram-negative bacteria (CR-GNB) have emerged and disseminated worldwide, become a great concern worldwide including Korea. The prevalence of fecal carriage of imipenem-resistant Gram-negative bacteria (IR-GNB) in persons in Korea was investigated. Stool samples were collected from 300 persons upon medical examination. Samples were screened for IR-GNB by using MacConkey agar with 2 μl/ml imipenem. Species were identified by 16S rRNA gene sequence analysis, and antimicrobial susceptibility was determined by the broth microdilution method...
July 18, 2017: Journal of Microbiology / the Microbiological Society of Korea
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
#6
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/28721040/effect-of-ultraviolet-treatment-on-bacterial-attachment-and-osteogenic-activity-to-alkali-treated-titanium-with-nanonetwork-structures
#7
Honghao Zhang, Satoshi Komasa, Chiho Mashimo, Tohru Sekino, Joji Okazaki
PURPOSE: Alkali-treated titanium with nanonetwork structures (TNS) possesses good osteogenic activity; however, the resistance of this material to bacterial contamination remains inadequate. As such, TNS implants are prone to postoperative infection. In this work, we attempted to alter the biological properties of TNS by treatment with short-duration high-intensity ultraviolet (UV) irradiation. METHODS: TNS discs were treated with UV light (wavelength =254 nm, strength =100 mW/cm(2)) for 15 minutes using a UV-irradiation machine...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28720847/the-glycointeractome-of-serogroup-b-neisseria-meningitidis-strain-mc58
#8
Tsitsi D Mubaiwa, Lauren E Hartley-Tassell, Evgeny A Semchenko, Freda E-C Jen, Yogitha N Srikhanta, Christopher J Day, Michael P Jennings, Kate L Seib
Neisseria meningitidis express numerous virulence factors that enable it to interact with diverse microenvironments within the host, during both asymptomatic nasopharyngeal colonization and invasive disease. Many of these interactions involve bacterial or host glycans. In order to characterise the meningococcal glycointeractome, glycan arrays representative of structures found on human cells, were used as a screening tool to investigate host glycans bound by N. meningitidis. Arrays probed with fluorescently labelled wild-type MC58 revealed binding to 223 glycans, including blood group antigens, mucins, gangliosides and glycosaminoglycans...
July 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28720731/an-in-vitro-chicken-gut-model-demonstrates-transfer-of-a-multidrug-resistance-plasmid-from-salmonella-to-commensal-escherichia-coli
#9
Roderick M Card, Shaun A Cawthraw, Javier Nunez-Garcia, Richard J Ellis, Gemma Kay, Mark J Pallen, Martin J Woodward, Muna F Anjum
The chicken gastrointestinal tract is richly populated by commensal bacteria that fulfill various beneficial roles for the host, including helping to resist colonization by pathogens. It can also facilitate the conjugative transfer of multidrug resistance (MDR) plasmids between commensal and pathogenic bacteria which is a significant public and animal health concern as it may affect our ability to treat bacterial infections. We used an in vitro chemostat system to approximate the chicken cecal microbiota, simulate colonization by an MDR Salmonella pathogen, and examine the dynamics of transfer of its MDR plasmid harboring several genes, including the extended-spectrum beta-lactamase blaCTX-M1 We also evaluated the impact of cefotaxime administration on plasmid transfer and microbial diversity...
July 18, 2017: MBio
https://www.readbyqxmd.com/read/28720151/supplementation-with-lactobacillus-paracasei-or-pediococcus-pentosaceus-does-not-prevent-diarrhoea-in-neonatal-pigs-infected-with-escherichia-coli-f18
#10
Anders D Andersen, Malene S Cilieborg, Charlotte Lauridsen, Anne Louise Mørkbak, Per Torp Sangild
Infectious diarrhoea is a worldwide problem in newborns. Optimal bacterial colonisation may enhance gut maturation and protect against pathogenic bacteria after birth. We hypothesised that lactic acid bacteria (LAB) administration prevents pathogen-induced diarrhoea in formula-fed newborns. Newborn caesarean-delivered, colostrum-deprived term piglets on parenteral nutrition for the first 15 h, were used as models for sensitive newborn infants. A commercially available probiotic strain, Lactobacillus paracasei F19 (LAP, 2·6×108 colony-forming units (CFU)/kg per d) and a novel LAB isolate, Pediococcus pentosaceus (PEP, 1·3×1010 CFU/kg per d), were administered for 5 d with or without inoculation of the porcine pathogen, Escherichia coli F18 (F18, 1010 CFU/d)...
July 19, 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28719350/characterization-of-candidate-probionts-isolated-from-human-breast-milk
#11
S Khalkhali, N Mojgani
This study was designed to isolate and identify the potential probionts present in 32 healthy mothers' breast milk. Microbial culture media and 16SrRNA sequencing were used to isolate and identify the bacteria and all isolates were analyzed for their antagonistic potential, resistance to acidic pH, bile salts and survival under simulated gastric and intestinal conditions. The colonization potential was further assessed based on adherence to human enterocyte-like Caco-2 cell lines. The breast milk samples harbored significant numbers of Gram positive and catalase negative (85%) bacteria...
May 20, 2017: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28718822/a-bacterial-toxin-with-analgesic-properties-hyperpolarization-of-drg-neurons-by-mycolactone
#12
Ok-Ryul Song, Han-Byul Kim, Samuel Jouny, Isabelle Ricard, Alexandre Vandeputte, Nathalie Deboosere, Estelle Marion, Christophe J Queval, Pierre Lesport, Emmanuel Bourinet, Daniel Henrion, Seog Bae Oh, Guillaume Lebon, Guillaume Sandoz, Edouard Yeramian, Laurent Marsollier, Priscille Brodin
Mycolactone, a polyketide molecule produced by Mycobacterium ulcerans, is the etiological agent of Buruli ulcer. This lipid toxin is endowed with pleiotropic effects, presents cytotoxic effects at high doses, and notably plays a pivotal role in host response upon colonization by the bacillus. Most remarkably, mycolactone displays intriguing analgesic capabilities: the toxin suppresses or alleviates the pain of the skin lesions it inflicts. We demonstrated that the analgesic capability of mycolactone was not attributable to nerve damage, but instead resulted from the triggering of a cellular pathway targeting AT₂ receptors (angiotensin II type 2 receptors; AT₂R), and leading to potassium-dependent hyperpolarization...
July 18, 2017: Toxins
https://www.readbyqxmd.com/read/28718795/novel-molecular-insights-about-lactobacillar-sortase-dependent-piliation
#13
REVIEW
Ingemar von Ossowski
One of the more conspicuous structural features that punctuate the outer cell surface of certain bacterial Gram-positive genera and species is the sortase-dependent pilus. As these adhesive and variable-length protrusions jut outward from the cell, they provide a physically expedient and useful means for the initial contact between a bacterium and its ecological milieu. The sortase-dependent pilus displays an elongated macromolecular architecture consisting of two to three types of monomeric protein subunits (pilins), each with their own specific function and location, and that are joined together covalently by the transpeptidyl activity of a pilus-specific C-type sortase enzyme...
July 18, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28718464/-dissertation-25-years-after-date-48-the-effect-of-saliva-on-the-colonisation-of-oral-bacteria
#14
A J M Ligtenberg
In the research that formed the basis of the dissertation 'Intervention of saliva in the colonization process of oral bacteria' from 1992, the aggregation or clustering of oral bacteria by saliva was investigated. This prevents bacterial colonisation in the mouth. Major individual differences in aggregation activity of different saliva samples were found to exist, partly determined by the blood group of the saliva donor. As well as being found in red blood cells, AB0 blood group antigens also appear on salivary glycoproteins...
July 2017: Nederlands Tijdschrift Voor Tandheelkunde
https://www.readbyqxmd.com/read/28717846/effects-of-xylitol-and-sucrose-mint-products-on-streptococcus-mutans-colonization-in-a-dental-simulator-model
#15
Krista M Salli, Ulvi K Gürsoy, Eva M Söderling, Arthur C Ouwehand
Few laboratory methods exist for evaluating the cariogenicity of food ingredients. In this study, a dental simulator was used to determine the effects of commercial sucrose and xylitol mint products on the adherence and planktonic growth of Streptococcus mutans. Solutions (3% w/v) of sucrose, xylitol, sucrose mints, xylitol mints, xylitol with 0.02% peppermint oil (PO), and 0.02% PO alone were used to test the levels of planktonic and adhered S. mutans. A dental simulator with continuous artificial saliva flow, constant temperature, and mixing was used as a test environment and hydroxyapatite (HA) discs were implemented into the model to simulate the tooth surface...
July 17, 2017: Current Microbiology
https://www.readbyqxmd.com/read/28717834/characterizing-the-adherence-profiles-of-virulent-vibrio-parahaemolyticus-isolates
#16
Alisha M Aagesen, Sureerat Phuvasate, Yi-Cheng Su, Claudia C Häse
The human pathogen Vibrio parahaemolyticus is a leading cause of seafood-borne illness in the USA, and infections with V. parahaemolyticus typically result from eating raw or undercooked oysters. V. parahaemolyticus has been shown to be highly resistant to oyster depuration, suggesting that the bacterium possesses specific mechanisms or factors for colonizing oysters and persisting during depuration. In this study, we characterized eight different V. parahaemolyticus strains for differences in resistance to oyster depuration, biofilm formation, and motility...
July 17, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28716079/the-human-jejunum-has-an-endogenous-microbiota-that-differs-from-those-in-the-oral-cavity-and-colon
#17
Olof H Sundin, Antonio Mendoza-Ladd, Mingtao Zeng, Diana Diaz-Arévalo, Elisa Morales, B Matthew Fagan, Javier Ordoñez, Philip Velez, Nishaal Antony, Richard W McCallum
BACKGROUND: The upper half of the human small intestine, known as the jejunum, is the primary site for absorption of nutrient-derived carbohydrates, amino acids, small peptides, and vitamins. In contrast to the colon, which contains 10(11)-10(12) colony forming units of bacteria per ml (CFU/ml), the normal jejunum generally ranges from 10(3) to 10(5) CFU per ml. Because invasive procedures are required to access the jejunum, much less is known about its bacterial microbiota. Bacteria inhabiting the jejunal lumen have been investigated by classical culture techniques, but not by culture-independent metagenomics...
July 17, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28715739/antimicrobial-and-antibiofilm-efficacy-of-self-cleaning-surfaces-functionalized-by-tio2-photocatalytic-nanoparticles-against-staphylococcus-aureus-and-pseudomonas-putida
#18
Blanca Jalvo, Marisol Faraldos, Ana Bahamonde, Roberto Rosal
A photocatalytic sol of TiO2 nanoparticles has been used for creating self-cleaning antimicrobial flat and porous glass surfaces. The substrates were irradiated to study their photocatalytic properties and behavior in the presence of biofilm-forming bacteria. Smooth glass surfaces and glass microfiber filters were covered with 1.98×10(-3)±1.5×10(-4)gcm(-2) and 8.55×10(-3)±3.0×10(-4)gcm(-2) densities, respectively. Self-cleaning properties were analyzed using the methylene blue 365nm UV-A photodegradation test...
July 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28715646/l-form-bacteria-cohabitants-in-human-blood-significance-for-health-and-diseases
#19
Nadya D Markova
From a historical perspective, intriguing assumptions about unknown "live units" in human blood have attracted the attention of researchers, reflecting their desire to define a new class of microorganisms. Thus, the concept of "blood microbiota" brings about many questions about the nature, origin, and biological significance of the "unusual microbial cohabitants" in human blood. In contrast to current views that bloodstream in healthy humans is sterile, the hypothesis about the existence of microbes as L-forms (cell wall deficient bacteria) in human blood has evolved on the basis of known facts about their unique biology, as observed in our studies and those of other authors...
May 2017: Discovery Medicine
https://www.readbyqxmd.com/read/28714894/carbonic-anhydrase-from-porphyromonas-gingivalis-as-a-drug-target
#20
REVIEW
Claudiu T Supuran, Clemente Capasso
Periodontitis originates from a microbial synergy causing the development of a mouth microbial imbalance (dysbiosis), consisting of a microbial community composed of anaerobic bacteria. Most studies concerning the treatment of periodontitis have primarily take into account the Gram-negative bacterium Porphyromonas gingivalis, because it is a prominent component of the oral microbiome and a successful colonizer of the oral epithelium. Here, we focus our attention on the study of the carbonic anhydrases (CAs, EC 4...
July 15, 2017: Pathogens
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