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https://www.readbyqxmd.com/read/28550272/non-alcoholic-fatty-liver-disease-a-chronic-disease-of-the-21-st-century
#1
Metrakos Peter, Nilsson Tommy
Non-alcoholic fatty liver disease (NAFLD) comprises a spectrum of metabolic states ranging from simple steatosis to inflammation with associated fibrosis to cirrhosis. Though accumulation of hepatic fat is not associated with a significant increase in mortality rates, hepatic inflammation is, as this augments the risk of terminal liver disease, i.e., cirrhosis, hepatic decompensation (liver failure) and/or hepatocellular carcinoma. Disease progression is usually slow, over a decade or more and, for the most part, remains asymptomatic...
May 26, 2017: Journal of Biomedical Research
https://www.readbyqxmd.com/read/28550087/transcriptional-networks-in-rodent-models-support-a-role-for-gut-brain-communication-in-neurogenic-hypertension-a-review-of-the-evidence
#2
Jasenka Zubcevic, Ashley Baker, Christopher J Martyniuk
Hypertension (HTN) is the most prevalent condition observed in primary health care. Hypertension shows complex etiology, and neuroinflammation, overactive sympathetic drive, and the microbiome are associated with the disease. To obtain mechanistic perspective into neurogenic HTN, we first constructed a framework for transcriptional regulators of the disease using the Comparative Toxicogenomics Database. This approach yielded a core group of 178 transcripts that are prevalent in HTN, including leptin and neuropeptide Y...
May 26, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/28549981/early-pregnancy-vaginal-microbiome-trends-and-preterm-birth
#3
Molly J Stout, Yanjiao Zhou, Kristine M Wylie, Phillip I Tarr, George A Macones, Methodius G Tuuli
BACKGROUND: Despite decades of attempts to link infectious agents to preterm birth, an exact causative microbe or community of microbes remains elusive. Non-culture 16S ribosomal RNA gene sequencing suggests important racial differences and pregnancy specific changes in the vaginal microbial communities. A recent study examining the association of the vaginal microbiome and preterm birth documented important findings but was performed in a predominantly White cohort. Given the important racial differences in bacterial communities within the vagina as well as persistent racial disparities in preterm birth it is important to examine cohorts with varied demographic compositions...
May 23, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28548992/gut-microbiota-and-host-defense-in-critical-illness
#4
Max C Jacobs, Bastiaan W Haak, Floor Hugenholtz, W Joost Wiersinga
PURPOSE OF REVIEW: The review aims to discuss emerging evidence in the field of microbiome-dependent roles in host defense during critical illness with a focus on lung, kidney, and brain inflammation. RECENT FINDINGS: The gut microbiota of critical ill patients is characterized by lower diversity, lower abundances of key commensal genera, and in some cases overgrowth by one bacterial genera, a state otherwise known as dysbiosis. Increasing evidence suggests that microbiota-derived components can reach the circulatory system from the gut and modulate immune homeostasis...
May 25, 2017: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/28548658/distinctive-microbiomes-and-metabolites-linked-with-weight-loss-after-gastric-bypass-but-not-gastric-banding
#5
Zehra Esra Ilhan, John K DiBaise, Nancy G Isern, David W Hoyt, Andrew K Marcus, Dae-Wook Kang, Michael D Crowell, Bruce E Rittmann, Rosa Krajmalnik-Brown
Roux-en-Y gastric bypass (RYGB) and laparoscopic adjustable gastric banding (LAGB) are anatomically different bariatric operations. RYGB achieves greater weight loss compared with LAGB. Changes in the gut microbiome have been documented after RYGB, but not LAGB, and the microbial contribution to sustainable surgical weight loss warrants further evaluation. We hypothesized that RYGB imposes greater changes on the microbiota and its metabolism than LAGB, and that the altered microbiota may contribute to greater weight loss...
May 26, 2017: ISME Journal
https://www.readbyqxmd.com/read/28548130/corrigendum-intestinal-microbiome-in-children-with-severe-and-complicated-acute-viral-gastroenteritis
#6
Shih-Yen Chen, Chi-Neu Tsai, Yun-Shien Lee, Chun-Yuan Lin, Kuan-Yeh Huang, Hsun-Ching Chao, Ming-Wei Lai, Cheng-Hsun Chiu
This corrects the article DOI: 10.1038/srep46130.
May 26, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28547568/biofertilizers-and-sustainable-agriculture-exploring-arbuscular-mycorrhizal-fungi
#7
REVIEW
Nicholas O Igiehon, Olubukola O Babalola
Worldwide agricultural food production has to double in 2050 so as to feed the global increasing population while reducing dependency on conventional chemical fertilizers plus pesticides. To accomplish this objective, there is the need to explore the several mutualistic interactions between plant roots and rhizosphere microbiome. Biofertilization is the process of boosting the abundance of microorganisms such as arbuscular mycorrhizal fungi (AMF) in the natural plant rhizosphere which depicts a beneficial alternative to chemical fertilization practices...
May 25, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28546791/fecal-microbiota-transplantation-from-clostridium-difficile-to-inflammatory-bowel-disease
#8
Robert J Gianotti, Alan C Moss
Fecal microbiota transplantation (FMT) has evolved from a case report in the medical literature to the basis of major innovations in the treatment of Clostridium difficile infection (CDI) and, potentially, inflammatory bowel disease (IBD). In the clinical setting, FMT was noted to significantly lower the risk of recurrent CDI, likely by increasing microbial diversity and altering the metabolic environment in the intestinal tract of recipients. In parallel, advances in the ability to quantify and characterize microbial communities in fecal samples led to the association of IBD with a state of intestinal dysbiosis...
April 2017: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28545829/gut-microbiota-and-hepatitis-b-virus-induced-chronic-liver-disease-implications-for-faecal-microbiota-transplantation-therapy
#9
REVIEW
Y Kang, Y Cai
Hepatitis B is one of the most common infectious diseases globally. It has been estimated that there are 350 million chronic hepatitis B virus (HBV) carriers worldwide. The liver is connected to the small intestine by the bile duct, which carries bile formed in the liver to the intestine. Nearly all of the blood that leaves the stomach and intestines must pass through the liver. Human intestines contain a wide diversity of microbes, collectively termed the 'gut microbiota'. Gut microbiota play a significant role in host metabolic processes and host immune modulation, and influence host development and physiology (organ development)...
April 15, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/28545131/major-changes-in-microbial-diversity-and-community-composition-across-gut-sections-of-a-juvenile-panchlora-cockroach
#10
Erin A Gontang, Frank O Aylward, Camila Carlos, Tijana Glavina Del Rio, Mansi Chovatia, Alison Fern, Chien-Chi Lo, Stephanie A Malfatti, Susannah G Tringe, Cameron R Currie, Roberto Kolter
Investigations of gut microbiomes have shed light on the diversity and genetic content of these communities, and helped shape our understanding of how host-associated microorganisms influence host physiology, behavior, and health. Despite the importance of gut microbes to metazoans, our understanding of the changes in diversity and composition across the alimentary tract, and the source of the resident community are limited. Here, using community metagenomics and 16S rRNA gene sequencing, we assess microbial community diversity and coding potential in the foregut, midgut, and hindgut of a juvenile Panchlora cockroach, which resides in the refuse piles of the leaf-cutter ant species Atta colombica...
2017: PloS One
https://www.readbyqxmd.com/read/28545071/characterization-of-the-urinary-microbiome-in-healthy-dogs
#11
Erin N Burton, Leah A Cohn, Carol N Reinero, Hans Rindt, Stephen G Moore, Aaron C Ericsson
The urinary bladder in healthy dogs has dogmatically been considered free of bacteria. This study used culture independent techniques to characterize the healthy canine urinary microbiota. Urine samples collected by antepubic cystocentesis from dogs without urinary infection were used for DNA extraction. Genital tract and rectal samples were collected simultaneously from the same dogs. The V4 hypervariable region of the 16S rRNA bacterial gene was amplified and compared against Greengenes database for OTU assignment and relative abundance for urine, genital, and rectal samples...
2017: PloS One
https://www.readbyqxmd.com/read/28545003/adaptation-specialization-and-coevolution-within-phytobiomes
#12
REVIEW
David A Baltrus
Growth patterns of individual plants and evolutionary trajectories of plant communities are intimately linked with and are critically affected by host-associated microbiomes. Research across systems has begun to shed light on how these phytobiomes are established under laboratory and natural conditions, and have cultivated hope that a better understanding of the governing principles for host-microbe interactions can guide attempts to engineer microbiomes to boost agricultural yields. One important, yet relatively understudied, parameter in regards to phytobiome membership is the degree to which specialization and coevolution between plant species and microbes provides structure to these communities...
May 22, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28544594/diversity-of-aromatic-hydroxylating-dioxygenase-genes-in-mangrove-microbiome-and-their-biogeographic-patterns-across-global-sites
#13
Sanderson T P de Sousa, Lucélia Cabral, Gileno Vieira Lacerda Júnior, Valéria M Oliveira
Aromatic hydrocarbons (AH), such as polycyclic aromatic hydrocarbons, are compounds largely found in nature. Aromatic-ring-hydroxylating dioxygenases (ARHD) are proteins involved in AH degradation pathways. We used ARHD functional genes from an oil-impacted mangrove area and compared their diversity with other sites around the world to understand the ARHD biogeographic distribution patterns. For this, a comprehensive database was established with 166 operational protein families (OPFs) from 1,758 gene sequences obtained from 15 different sites worldwide, of which twelve are already published studies and three are unpublished...
May 23, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28544570/relative-susceptibility-of-airway-organisms-to-antimicrobial-effects-of-nitric-oxide
#14
Alan D Workman, Ryan M Carey, Michael A Kohanski, David W Kennedy, James N Palmer, Nithin D Adappa, Noam A Cohen
BACKGROUND: Nitric oxide (NO) is released in the airway as a critical component of innate immune defense against invading pathogenic organisms. It is well documented that bacteriostatic and bactericidal effects of NO are concentration-dependent. However, few data exist comparing relative susceptibility of common pathogens to NO at physiologic concentrations. In this study we evaluated the effects of NO on 4 common airway bacteria and 1 fungus, and examined the potential implications of discrepancies in sensitivity...
May 25, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28544080/the-skin-microbiome-of-cow-nose-rays-rhinoptera-bonasus-in-an-aquarium-touch-tank-exhibit
#15
Patrick J Kearns, Jennifer L Bowen, Michael F Tlusty
Public aquaria offer numerous educational opportunities for visitors while touch-tank exhibits offer guests the ability to directly interact with marine life via physical contact. Despite the popularity of touch-tanks, there is a paucity of research about animal health in these exhibits and, in particular, there is little research on the microbial communities in these highly interactive exhibits. Microbial community structure can have implications for both host health and habitat function. To better understand the microbiome of a touch-tank we used high-throughput sequencing of the 16S rRNA gene to analyze the microbial community on the dorsal and ventral surfaces of cow-nose rays (Rhinoptera bonasus) as well as their environment in a frequently visited touch-tank exhibit at the New England Aquarium...
May 23, 2017: Zoo Biology
https://www.readbyqxmd.com/read/28543778/oral-flora-in-acute-stroke-patients-a-prospective-exploratory-observational-study
#16
Elizabeth Boaden, Mary Lyons, Sim K Singhrao, Hazel Dickinson, Michael Leathley, Catherine E Lightbody, Alison McLoughlin, Zarine Khan, Stjohn Crean, Craig Smith, Susan Higham, Caroline Watkins
OBJECTIVE: To describe the bacterial profile of the oral flora during the first 2 weeks following a stroke, examining changes in the condition of the oral cavity and infections. BACKGROUND: Dysphagia is common after a stroke and can lead to aspiration pneumonia. Oral flora changes associated with stroke have been implicated as a possible source of bacteria that can cause systemic infections. MATERIALS AND METHODS: Seventy-seven participants were recruited over a period of 9 months...
May 22, 2017: Gerodontology
https://www.readbyqxmd.com/read/28543188/cd44-deletion-leading-to-attenuation-of-experimental-autoimmune-encephalomyelitis-results-from-alterations-in-gut-microbiome-in-mice
#17
Kumaraswamy Naidu Chitrala, Hongbing Guan, Narendra P Singh, Brandon Busbee, Alexa Gandy, Pegah Mehrpouya-Bahrami, Mitra S Ganewatta, Chuanbing Tang, Saurabh Chatterjee, Prakash Nagarkatti, Mitzi Nagarkatti
Dysbiosis in gut microbiome has been shown to be associated with inflammatory and autoimmune diseases. Previous studies from our laboratory demonstrated the pivotal role played by CD44 in the regulation of experimental autoimmune encephalomyelitis (EAE), a murine model of multiple sclerosis. In the current study, we determined whether these effects resulted from an alteration in gut microbiota and the short-chain fatty acid (SCFA) production in CD44KO mice. Fecal transfer from naïve CD44KO but not CD44WT mice, into EAE-induced CD44WT mice, led to significant amelioration of EAE...
May 23, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28542707/-urinary-tract-infection-requiem-for-a-heavyweight
#18
Thomas E Finucane
"Urinary tract infection" ("UTI") is an ambiguous, expansive, overused diagnosis that can lead to marked, harmful antibiotic overtreatment. "Significant bacteriuria," central to most definitions of "UTI," has little significance in identifying individuals who will benefit from treatment. "Urinary symptoms" are similarly uninformative. Neither criterion is well defined. Bacteriuria and symptoms remit and recur spontaneously. Treatment is standard for acute uncomplicated cystitis and common for asymptomatic bacteriuria, but definite benefits are few...
May 19, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28542523/impact-of-maintenance-immunosuppressive-therapy-on-the-fecal-microbiome-of-renal-transplant-recipients-comparison-between-an-everolimus-and-a-standard-tacrolimus-based-regimen
#19
Gianluigi Zaza, Alessandra Dalla Gassa, Giovanna Felis, Simona Granata, Sandra Torriani, Antonio Lupo
BACKGROUND: The gut microbiome is the full set of microbes living in the gastrointestinal tract and is emerging as an important dynamic/fluid system that, if altered by environmental, dietetic or pharmacological factors, could considerably influence drug response. However, the immunosuppressive drug-induced modifications of this system are still poorly defined. METHODS: We employed an innovative bioinformatics approach to assess differences in the whole-gut microbial metagenomic profile of 20 renal transplant recipients undergoing maintenance treatment with two different immunosuppressive protocols...
2017: PloS One
https://www.readbyqxmd.com/read/28542458/a-pilot-study-using-metagenomic-sequencing-of-the-sputum-microbiome-suggests-potential-bacterial-biomarkers-for-lung-cancer
#20
Simon J S Cameron, Keir E Lewis, Sharon A Huws, Matthew J Hegarty, Paul D Lewis, Justin A Pachebat, Luis A J Mur
Lung cancer (LC) is the most prevalent cancer worldwide, and responsible for over 1.3 million deaths each year. Currently, LC has a low five year survival rates relative to other cancers, and thus, novel methods to screen for and diagnose malignancies are necessary to improve patient outcomes. Here, we report on a pilot-sized study to evaluate the potential of the sputum microbiome as a source of non-invasive bacterial biomarkers for lung cancer status and stage. Spontaneous sputum samples were collected from ten patients referred with possible LC, of which four were eventually diagnosed with LC (LC+), and six had no LC after one year (LC-)...
2017: PloS One
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