June 3, 2020

Today’s post covers articles on role of microbiome in sepsis, early life microbiota related to cystic fibrosis and respiratory syncitial virus disease, promise and challenge with cancer microbiome, effect of probiotics on intestinal homeostasis after chemotherapy and many more!

General microbiome

Predictive biology: modelling, understanding and harnessing microbial complexity – Allison J. Lopatkin – Nature Reviews Microbiology

The Gut Microbiome’s Role in the Development, Maintenance, and Outcomes of Sepsis – Max W Adelman – Critical Care

The Promise and Challenge of Cancer Microbiome Research – Sumeed Syed Manzoor – Genome Biology

Antidiabetic Effects of Flavan-3-ols and Their Microbial Metabolites – Estefanía Márquez Campos – Nutrients

Human microbiome

Longitudinal analysis reveals transition barriers between dominant ecological states in the gut microbiome – Roie Levy – PNAS

Strain-resolved microbiome sequencing reveals mobile elements that drive bacterial competition on a clinical timescale – Soumaya Zlitni – Genome Medicine

Comparative Assessment of Faecal Microbial Composition and Metabonome of Swine, Farmers and Human Control – Shiang Chiet Tan – Scientific Reports

Matching Between Donors and Ulcerative Colitis Patients Is Important for Long-Term Maintenance After Fecal Microbiota Transplantation – Koki Okahara – Journal of Clinical Medicine

Preganancy and early life

Alterations in Vaginal Microbiota and Associated Metabolome in Women With Recurrent Implantation Failure – Min Fu – mBio

Development of the Gut Microbiota in Early Life: The Impact of Cystic Fibrosis and Antibiotic Treatment – Maartje Kristensen – Journal of Cystic Fibrosis

Altered Gut Microbiota in Infants Is Associated With Respiratory Syncytial Virus Disease Severity – Jeffrey N Harding – BMC Microbiology

Ecological Succession in the Vaginal Microbiota During Pregnancy and Birth – M A Rasmussen – Isme Journal

Animal experiments

Host genotype and exercise exhibit species-level selection for members of the gut bacterial communities in the mouse digestive system – R. A. Dowden – Scientific Reports

Repetitive, Mild Traumatic Brain Injury Results in a Progressive White Matter Pathology, Cognitive Deterioration, and a Transient Gut Microbiota Dysbiosis – Mariana Angoa-Pérez – Scientific Reports

Association of Gut Microbiota Composition and Function With an Aged Rat Model of Senile Osteoporosis Using 16S rRNA and Metagenomic Sequencing Analysis – Sicong Ma – Aging

Increasing the Hindgut Carbohydrate/Protein Ratio by Cecal Infusion of Corn Starch or Casein Hydrolysate Drives Gut Microbiota-Related Bile Acid Metabolism To Stimulate Colonic Barrier Function – Yu Pi – mSystems

Plant, root and soil microbiome

Using Soil Bacterial Communities to Predict Physico-Chemical Variables and Soil Quality – Syrie M Hermans – Microbiome

Analysis of bacterial and archaeal communities associated with Fogo volcanic soils of different ages – Corinne Biderre-Petit – Fems Microbial Ecology

Water microbiome

Functional potential and assembly of microbes from sediments in a lake bay and adjoining river ecosystem for polycyclic aromatic hydrocarbon biodegradation – Zaisheng Yan – Environmental Microbiology

Functional foods

Effect of Probiotics on the Maintenance of Intestinal Homeostasis After Chemotherapy: Systematic Review and Meta-Analysis of Pre-Clinical Studies – W G Lima – Beneficial Microbes

Non microbiology picks

Racial Disparities in Knowledge, Attitudes and Practices Related to COVID-19 in the USA– Wilson M Alobuia – Journal of Public Health

Ozone Treatment for Elimination of Bacteria and SARS-CoV-2 for Medical Environments – Craig Westover – BioRxiv

May 5, 2020

Events

The Virtual Microbiome Summit – May 19-22, 2020

Multi-site human microbiome

Comparison of microbiomes in ulcerative and normal mucosa of recurrent aphthous stomatitis (RAS)-affected patients – Yang et al. – BMC Oral Health

Human gut microbiome

Gut bacterial ClpB-like gene function is associated with decreased body weight and a characteristic microbiota profile – Arnoriaga-Rodríguez et al. – Microbiome

Preprint: Antibiotics may influence gut microbiome signaling to the brain in preterm neonates – Russell et al. – bioRxiv

Animal experiments

Infection with the sheep gastrointestinal nematode Teladorsagia circumcincta increases luminal pathobionts – Cortés et al. – Microbiome

Techniques

Preprint: A study’s got to know its limitations – Gooch et al. – bioRxiv

April 2, 2020

Today’s digest starts with a recent study from The Lancet linking antibiotic usage and the gut microbiome with asthma incidence, before moving onto a range of other papers covering multiple human body sites and environmental microbiome studies.

General microbiome
*** Decreasing antibiotic use, the gut microbiota, and asthma incidence in children: evidence from population-based and prospective cohort studies – Patrick et al. – The Lancet

Human respiratory microbiome

Lung function and microbiota diversity in cystic fibrosis – Cuthbertson et al. – BMC Microbiome

Human gut microbiome

Colonic microbiota is associated with inflammation and host epigenomic alterations in inflammatory bowel disease – Ryan et al. – Nature Communications

Fecal microbiota transplantation for the improvement of metabolism in obesity: The FMT-TRIM double-blind placebo-controlled pilot trial – Yu et al. – PLOS Medicine

Effects of underfeeding and oral vancomycin on gut microbiome and nutrient absorption in humans – Basolo et al. – Nature Medicine

The Gut Microbial Diversity of Newly Diagnosed Diabetics but Not of Prediabetics Is Significantly Different from That of Healthy Nondiabetics – Gaike et al. – MSystems

Shotgun Metagenomics of Gut Microbiota in Humans with up to Extreme Longevity and the Increasing Role of Xenobiotic Degradation – Rampelli et al. MSystems

Animal experiments

Gut microbiota from persons with attention-deficit/hyperactivity disorder affects the brain in mice – Tengeler et al. – BMC Microbiome

Unraveling Assemblage, Functions and Stability of the Gut Microbiota of Blattella germanica by Antibiotic Treatment – Domínguez-Santos et al. – Frontiers in Microbiology

Plant, root, and soil microbiome

Novel phosphate-solubilizing bacteria enhance soil phosphorus cycling following ecological restoration of land degraded by mining – Liang et al.  – ISME

Water and extremophile microbiome

Genomic and transcriptomic evidence of light-sensing, porphyrin biosynthesis, Calvin-Benson-Bassham cycle, and urea production in Bathyarchaeota – Pan et al. BMC Microbiome

Microbial community profiling of ammonia and nitrite oxidizing bacterial enrichments from brackishwater ecosystems for mitigating nitrogen species – Baskaran et al. – Nature Scientific Reports

Probiotics

Lactobacillus reuteri 5454 and Bifidobacterium animalis ssp. lactis 5764 improve colitis while differentially impacting dendritic cells maturation and antimicrobial responses – Hrdý et al. Nature Scientific Reports

March 20, 2020

Good morning! I hope this post finds you well. There are lots of new microbiome papers to share, including work on the disruption of E. coli biofilms, inconsistent diets used in Drosophila microbiome studies, and the effects of pollution on soil microbial communities.

General microbiome

Biosynthesis of silver nanoparticles by Fusarium scirpi and its potential as antimicrobial agent against uropathogenic Escherichia coli biofilms, Candelario Rodríguez-Serrano et al., PLOS ONE


Human gut microbiome

Targeted inhibition of gut bacterial β-glucuronidase activity enhances anticancer drug efficacy, Aadra P. Bhatt et al., PNAS

Gut Microbiome Pattern Reflects Healthy Aging and Predicts Extended Survival in Humans (preprint), Tomasz Wilmanski et al., bioRxiv

Propionic Acid Shapes the Multiple Sclerosis Disease Course by an Immunomodulatory Mechanism, Alexander Duscha et al., Cell

Adjusting for age improves identification of gut microbiome alterations in multiple diseases, Tarini S Ghosh et al., eLife

Environmental remodeling of human gut microbiota and antibiotic resistome in livestock farms, Jian Sun et al., Nature Communications

Review – Altering Routine Intensive Care Unit Practices to Support Commensalism, Hamilton and Behal, Nutrition in Clinical Practice

Household Pet Ownership and the Microbial Diversity of the Human Gut Microbiota, Ashley E. Kates et al., Frontiers in Cellular and Infection Microbiology

Meta-analysis – Assessing the efficacy and safety of fecal microbiota transplantation and probiotic VSL#3 for active ulcerative colitis: A systematic review and meta-analysis, Xiaofei Dang et al., PLOS ONE


Other human microbiome

Subgingival Host-Microbial Interactions in Hyperglycemic Individuals, P.S. Kumar et al., Journal of Dental Research

Investigating Bifidobacteria and Human Milk Oligosaccharide Composition of Lactating Mothers, Gabriele Andrea Lugli et al., FEMS Microbiology Ecology


Animal experiments

Effects of intestinal flora on the pharmacokinetics and pharmacodynamics of aspirin in high-altitude hypoxia, Sun and Zhang et al., PLOS ONE

Meta-analysis of diets used in Drosophila microbiome research and introduction of the Drosophila Dietary Composition Calculator (DDCC) (preprint), Broderick and Lesperance, bioRxiv

The Carnivorous Digestive System and Bamboo Diet of Giant Pandas May Shape Their Low Gut Bacterial Diversity, Wei Gui et al., Conservation Physiology


Animal microbiome

Non-invasive evaluation of the equine gastrointestinal mucosal transcriptome, Coleman and Whitfield-Cargile et al., PLOS ONE

Dietary substitution of soybean oil with coconut oil in the absence of dietary antibiotics supports growth performance and immune function in nursery and grower pigs, Andrea G. Braundmeier-Fleming et al., Journal of Animal Science and Biotechnology

Isoflavone supplementation, via red clover hay, alters the rumen microbial community and promotes weight gain of steers grazing mixed grass pastures, Brittany E. Harlow et al., PLOS ONE

Domesticated equine species and their derived hybrids differ in their fecal microbiota, J.E. Edwards et al., Animal Microbiome

Integrative analysis of gut microbiome and metabolites revealed novel mechanisms of intestinal Salmonella carriage in chicken, Khin K.Z. Mon et al., Scientific Reports


Plant, root, and soil microbiome

Acute effects of PAH contamination on microbial community of different forest soils, Enrica Picariello et al., Environmental Pollution

Context-dependent Dynamics Lead to the Assembly of Functionally Distinct Microbial Communities, Leonora S Bittleston et al., Nature Communications

Lifting the veil on arid-to-hyperarid Antarctic soil microbiomes: a tale of two oases, Eden Zhang et al., Microbiome

Perspective – Toward Comprehensive Plant Microbiome Research, Kari Saikkonen et al., Frontiers in Ecology and Evolution


Water and extremophile microbiome

Deep-sea corals provide new insight into the ecology, evolution, and the role of plastids in widespread apicomplexan symbionts of anthozoans, Samuel A. Vohsen et al., Microbiome


Food microbiology

Lactic Acid Bacteria Isolated From Korean Kimchi Activate the Vitamin D Receptor–autophagy Signaling Pathways, Rong Lu et al., Inflammatory Bowel Diseases

Consumption of Fermented Foods Is Associated with Systematic Differences in the Gut Microbiome and Metabolome, Bryn C. Taylor et al., mSystems

Differential Microbial Composition of Monovarietal and Blended Extra Virgin Olive Oils Determines Oil Quality During Storage, Zullo and Ciafardini, Microorganisms


Phages and viruses

Honey bees harbor a diverse gut virome engaging in nested strain-level interactions with the microbiota, Germán Bonilla-Rosso et al., PNAS


Bioinformatics

FORENSIC: an Online Platform for Fecal Source Identification, Adélaïde Roguet et al., mSystems

Review – Accurate and complete genomes from metagenomes, Lin-Xing Chen et al., Genome Research

Powmic: An R Package for Power Assessment in Microbiome Case-Control Studies, Li Chen, Bioinformatics


Techniques

RapidAIM: a culture- and metaproteomics-based Rapid Assay of Individual Microbiome responses to drugs, Leyuan Li et al., Microbiome


Non-microbiology picks

Marketplace shrimp mislabeling in North Carolina, Morgan L. Korzik et al., PLOS ONE

March 10, 2020

Today’s digest features a study on the fecal microbiota transplantation and obesity, a comprehensive overview of the diversity and abundance of antibiotic resistance genes in migratory birds, and more. Happy reading!

Gut microbiome

*Fecal microbiota transplantation for the improvement of metabolism in obesity: The FMT-TRIM double-blind placebo-controlled pilot trial – Elaine W. Yu – PlosMedicine

Diet influences the functions of the human intestinal microbiome – Maria De Angelis — Scientific Reports

Bacillus coagulans SANK 70258 suppresses Enterobacteriaceae in the microbiota of ulcerative colitis in vitro and enhances butyrogenesis in healthy microbiota – Kengo Sasaki – Applied Microbiology and Biotechnology

Mini review: Gut epithelial metabolism as a key driver of intestinal dysbiosis associated with noncommunicable diseases – Catherine D. Shelton and Mariana X. Byndloss – Infection and Immunity

Etiologic features of diarrheagenic microbes in stool specimens from patients with acute diarrhea in Thailand – Kazuhisa Okad – Scientific reports

Raman‐activated sorting of antibiotic‐resistant bacteria in human gut microbiota – Yi Wang – Environmental Microbiology

Animal microbiome

*Metagenomic analysis reveals the microbiome and resistome in migratory birds – Jian Cao – Microbiome

Lack of evidence for microbiota in the placental and fetal tissues of rhesus macaques – Kevin R. Theis – bioRxiv

Animal experiment

Diarrhoeal events can trigger long-term Clostridium difficile colonization with recurrent blooms – David VanInsberghe – Nature Microbiology

Plant/root/soil microbiome

Long-Term Phytoremediation of Coastal Saline Soil Reveals Plant Species-Specific Patterns of Microbial Community Recruitment – Xiaogai Wang – mSystems

Impact of Soil Microbial Amendments on Tomato Rhizosphere Microbiome and Plant Growth in Field Soil – Andrea Nuzzo – Microbial Ecology

Bioinformatics

DeepMAsED: Evaluating the quality of metagenomic assemblies– Olga Mineeva – Bioinformatics

A method for achieving complete microbial genomes and better quality bins from metagenomics data – Lauren M. Lui – bioRxiv

Estimating relative biomasses of organisms in microbiota using “phylopeptidomics” – Olivier Pible – Microbiome

March 5, 2020

Today’s Digest is heavy, so you might want to pace yourself. It’s hard to pick the highlights, but I’m biased towards fungal research, so first about a wake-up call to look at the fungi seriously. The insects might provide for remedy against antibiotic resistance and is the dust settled on the sparse fetal intestinal microbiota? Stay healthy and keep reading.

Event

Call for papers – Global Outbreaks and Responses – BMC Medicine

General microbiology

** Viewpoints: Fungal diseases as neglected pathogens: A wake-up call to public health officials – Marcio L. Rodrigues & Joshua D. Nosanchuk – PLoS NTD

Inducible cell-to-cell signaling for tunable dynamics in microbial communities – Arianna Miano et al. – Nature Communications

Antimicrobial resistance

** The insect antimicrobial peptide cecropin A disrupts uropathogenic Escherichia coli biofilms – Miriam Kalsy et al. – npj Biofilms and Microbiomes

Using comparative genomics to understand molecular features of carbapenem-resistant Acinetobacter baumannii from South Korea causing invasive infections and their clinical implications – Min Hyung Kim – PLoS One

Factors associated with sufficient knowledge of antibiotics and antimicrobial resistance in the Japanese general population – Shinya Tsuzuki et al. – Scientific Reports

Faeces and vaccines could be the key to tackling antimicrobial resistance – Elisabeth Mahase – BMJ

A survey of extended-spectrum beta-lactamase-producing Enterobacteriaceae in urban wetlands in southwestern Nigeria as a step towards generating prevalence maps of antimicrobial resistance – Olawale Olufemi Adelowo et al. – PLoS One

Pregnancy and early life

** Viable bacterial colonization is highly limited in the human intestine in utero – E. Rackaityte et al. – Nature Medicine

Perinatal Antibiotic Exposure Affects the Transmission between Maternal and Neonatal Microbiota and Is Associated with Early-Onset Sepsis – Ping Zhou et al. – mSphere

Combined analysis of microbial metagenomic and metatranscriptomic sequencing data to assess in situ physiological conditions in the premature infant gut – Yonatan Sher et al. – PLoS One

Human skin microbiome

A microbiome and metabolomic signature of phases of cutaneous healing identified by profiling sequential acute wounds of human skin: An exploratory study – Mohammed Ashrafi et al. – PLoS One

Human oral microbiome

Review: Single-Cell Genomics and the Oral Microbiome – M. Balachandran et al. – Journal of Dental Research

Insights Obtained by Culturing Saccharibacteria With Their Bacterial Hosts – B. Bor et al. – Journal of Dental Research

Electronic Cigarette Aerosol Modulates the Oral Microbiome and Increases Risk of Infection – Smruti Pushalkar et al. – iScience

Press: Oral Microbiome Changes Implicated in Gum Inflammation in E-Cigarette Users – GenomeWeb

In vitro: A salivary metabolite signature that reflects gingival host-microbe interactions: instability predicts gingivitis susceptibility – Marcela M. Fernandez-Gutierrez et al. – Scientific Reports

Human respiratory microbiome

Review: The Role of Lung and Gut Microbiota in the Pathology of Asthma – Weronika Barcik et al. – Immunity

Cancer and microbiome

Endogenous murine microbiota member Faecalibaculum rodentium and its human homologue protect from intestinal tumour growth – Elena Zagato et al. – Nature Microbiology

Escherichia coli adhesion portion FimH functions as an adjuvant for cancer immunotherapy – Wei Zhang et al. – Nature Communications

Temporal changes in gut microbiota profile in children with acute lymphoblastic leukemia prior to commencement-, during-, and post-cessation of chemotherapy – Ling Ling Chua et al. – BMC Cancer

Review: Interplay between Dietary Polyphenols and Oral and Gut Microbiota in the Development of Colorectal Cancer – Carolina Cueva & Mariana Silva – Nutrients

Human gut microbiome

In vitro: Short-term supplementation of celecoxib-shifted butyrate production on a simulated model of the gut microbial ecosystem and ameliorated in vitro inflammation – Emma Hernandez-Sanabria et al. – npj Biofilms and Microbiomes

Review: Crosstalk Between Gut Microbiota and Innate Immunity and Its Implication in Autoimmune Diseases – Yuhao Jiao et al. – Frontiers in Immunology

An empirically derived method for measuring human gut microbiome alpha diversity: Demonstrated utility in predicting health-related outcomes among a human clinical sample – Sarah L. Hagerty et al. – PLoS One

Proof-of-concept study of the efficacy of a microbiota-directed complementary food formulation (MDCF) for treating moderate acute malnutrition – Ishita Mostafa et al. – BMC Public Health

Microbiota as Predictor of Mortality in Allogeneic Hematopoietic-Cell Transplantation – Jonathan U. Peled et al. – New England Journal of Medicine

Human multi-site microbiome

Age-Related Variation of Bacterial and Fungal Communities in Different Body Habitats across the Young, Elderly, and Centenarians in Sardinia – Lu Wu et al. – mSphere

Response of the human gut and saliva microbiome to urbanization in Cameroon – Ana Lokmer et al. – Scientific Reports

The gut-microbiota-brain axis

Therapeutic Effects of the In Vitro Cultured Human Gut Microbiota as Transplants on Altering Gut Microbiota and Improving Symptoms Associated with Autism Spectrum Disorder – Kainan Chen et al. – Microbial Ecology

Built environment microbiome

A preliminary study on the potential of Nanopore MinION and Illumina MiSeq 16S rRNA gene sequencing to characterize building-dust microbiomes – Anders B. Nygaard et al. – Scientific Reports

Metabolomics

Spatial metabolomics of in situ host–microbe interactions at the micrometre scale – Benedikt Geier et al. – Nature Microbiology

Global chemical effects of the microbiome include new bile-acid conjugations – Robert A. Quinn et al. – Nature

Animal experiments

PM2.5 exposure perturbs lung microbiome and its metabolic profile in mice – Jingli Li et al. – Science of the Total Environment

Growth hormone deficiency and excess alter the gut microbiome in adult male mice – Elizabeth A Jensen et al. – Endocrinology

Dissociation of Adaptive Thermogenesis from Glucose Homeostasis in Microbiome-Deficient Mice – Tibor L. Krisko et al. – Cell Metabolism

Fecal IgA Levels Are Determined by Strain-Level Differences in Bacteroides ovatus and Are Modifiable by Gut Microbiota Manipulation – Chao Yang et al. – Cell Host & Microbe

Animal microbiome

Can rumen bacteria communicate to each other? – Mi-Young Won et al. – Microbiome

Entomopathogenic nematode-associated microbiota: from monoxenic paradigm to pathobiome – Jean-Claude Ogier et al. – Microbiome

The canine oral microbiome: variation in bacterial populations across different niches – Avika Ruparell et al. – BMC Microbiology

Evolutionary analysis of Mycobacterium bovis genotypes across Africa suggests co-evolution with livestock and humans – Osvaldo Frederico Inlamea et al. – PLoS NTD

Nanopore sequencing of microbial communities reveals the potential role of sea lice as a reservoir for fish pathogens – Ana Teresa Gonçalves et al. – Scientific Reports

Plant, root and soil microbiome

Insights on aquatic microbiome of the Indian Sundarbans mangrove areas – Paltu Kumar Dhal et al. – PLoS One

Ganoderma lucidum cultivation affect microbial community structure of soil, wood segments and tree roots – Fei Ren et al. – Scientific Reports

Effect of long-term destocking on soil fungal functional groups and interactions with plants – Jie Wang et al. – Plant and Soil

Comparative Analysis of Root Microbiomes of Rice Cultivars with High and Low Methane Emissions Reveals Differences in Abundance of Methanogenic Archaea and Putative Upstream Fermenters – Zachary Liechty et al. – mSystems

Fungal diversity and community composition of wheat rhizosphere and non-rhizosphere soils from three different agricultural production regions of South Africa – Magalane Pheladi Gqozo et al. – Applied Soil Ecology

Microbial and volatile profiling of soils suppressive to Fusarium culmorum of wheat – Adam Ossowicki & Vittorio Tracanna et al. – Proceedings of the Royal Society B

Industrial development as a key factor explaining variances in soil and grass phyllosphere microbiomes in urban green spaces – Zhen-Zhen Yan et al. – Environmental Pollution

Plant communities mediate the interactive effects of invasion and drought on soil microbial communities – Catherine Fahey et al. – The ISME Journal

Water and extremophile microbiome

Methyl t-butyl ether-degrading bacteria for bioremediation and biocontrol purposes – Giada d’Errico et al. – PLoS One

Uncovering microbial responses to sharp geochemical gradients in a terrace contaminated by acid mine drainage – Rui Xu et al. – Environmental Pollution

Snapshot: Microbial Extremophiles – Amy K. Schmid et al. – Cell

Denitrification performance and microbial communities of solid-phase denitrifying reactors using poly (butylene succinate)/bamboo powder composite – Wanhe Qi et al. – Bioresource Technology

Meta-omics Provides Insights into the Impact of Hydrocarbon Contamination on Microbial Mat Functioning – Johanne Aubé et al. – Microbial Ecology

Role of microbial diversity for sustainable pyrite oxidation control in acid and metalliferous drainage prevention – Omy T. Ogbughalu et al. – Journal of Hazardous Materials

Phages and viruses

** Coronavirus research highlights – BMC

Fecal Viral Community Responses to High-Fat Diet in Mice – Anjelique Schulfer et al. – mSphere

Technology

Rapid MinION profiling of preterm microbiota and antimicrobial-resistant pathogens – Richard M. Leggett et al. – Nature Microbiology

Assembly-free single-molecule sequencing recovers complete virus genomes from natural microbial communities – John Beaulaurier et al. – Genome Research

Bioinformatics

Rapid inference of antibiotic resistance and susceptibility by genomic neighbour typing – Karel Břinda et al. – Nature Microbiology

Microbes in the news

Tough microbe’s DNA could be a lasting archive – Steve Nadis – Science

How Bacteria Can ‘Sculpt The Gut’ – Maya Trabulsi – KPBS

The bee microbiome can fight back against fungi that cause Colony Collapse Disorder – Lauren Sara McKee – Massive Science

Ancient gut microbiomes shed light on human evolution – Newswise

Launch of the Marine Microbiome Roadmap – NIOZ

Understanding Microbiome Resilience on a Changing Planet – Michigan State University

Adaptations in gut microbes helped our ancestors thrive in new geographical territories: Study – New Kerala

Scientists Announce VIRGO, First Comprehensive Gene Catalog To Decode the Vaginal Microbiome – PR Newswire

Metabolomics Reveals Connection Between Gut Microbiome and Blood – Metabolon

Study shows universally positive effect of cover crops on soil microbiome – Phys.org

New Center of Microbiome Science is in the works at Ohio State – Emily Caldwell – Ohio State University News

Common diseases may be communicable through microbiome, says UBC researcher – Stephanie Blain – The Ubyssey

The microbes in your mouth, and a reminder to floss and go to the dentist – Science Daily

For Your Microbiome, How You Eat Could Be As Important As What You Eat – Technology Networks

Study: Infectious gut bacteria may predict UTI risk – Sue Treiman – Cornell Chronicle

The Best Way to Avoid Getting Sick Is to Wash Your Hands — But You’re Probably Doing It Wrong – Bojana Galic – Live Strong

Microbes on the market

DuPont carries on microbiome momentum with metabolic disease collaboration – Will Chu – Nutraingredients

Non-microbiology picks

Invest 5% of research funds in ensuring data are reusable – Barend Mons – Nature

 

February 12, 2020

This Wednesday, read about the microbiome in “flammable ice”, gastric bypass surgery in a rat model, virulence genes of the coral reef phage, and more. Happy reading!

Gut microbiome

Changes in microbiome and metabolomic profiles of fecal samples stored with stabilizing solution at room temperature: a pilot study– Mi Young Lim — Scientific Reports

Fecal microbiota transplantation to maintain remission in Crohn’s disease: a pilot randomized controlled study – Harry Soko – Microbiome

Identification of Clostridioides difficile-Inhibiting Gut Commensals Using Culturomics, Phenotyping, and Combinatorial Community Assembly – Sudeep Ghimire – mySystems

Neonatal microbiota development and the effect of early life antibiotics are determined by two distinct settler types – Anat Eck – plosOne

Oral Microbiome

Patterns of Oral Microbiota Diversity in Adults and Children: A Crowdsourced Population Study – Zachary M. Burcham – Scientific Reports

Sub-species niche specialization in the oral microbiome is associated with nasopharyngeal carcinoma risk – Justine W. Debelius – bioRxiv

Animal experiments

*Gastric bypass surgery in a rat model alters the community structure and functional composition of the intestinal microbiota independently of weight loss – Sven-Bastiaan Haange – Microbiome

Growth phase-dependent responses of an in vitro gut microbiome to metformin – Zikai Hao – bioRxiv

Ursolic acid improves the bacterial community mapping of the intestinal tract in liver fibrosis mice – Sizhe Wan – bioRxiv

Animal microbiome

Beef cattle that respond differently to fescue toxicosis have distinct gastrointestinal tract microbiota – Lucas R Koester – bioRxiv

Variation in gut bacterial composition is associated with Haemonchus contortus parasite infection of sheep – Md. Abdullah Al Mamun – Animal microbiome

Water microbiome

Microbial diversity, ecological networks and functional traits associated to materials used in drinking water distribution systems – Isabel Douterelo – Water Research

Diverse Arctic lake sediment microbiota shape methane emission temperature sensitivity – Joanne B. Emerson – bioRxiv

Coral microbiome composition along the northern Red Sea suggests high plasticity of bacterial and specificity of endosymbiotic dinoflagellate communities – Eslam O. Osman – Microbiome

Extremophile microbiome

*Evidence in the Japan Sea of microdolomite mineralization within gas hydrate microbiomes – Glen T. Snyder – Scientific Reports

Textile waste and microplastic induce activity and development of unique hydrocarbon-degrading marine bacterial communities – Elsa B. Girard – bioRxiv

Plant/root/soil microbiome

Maize (Zea mays L. Sp.) varieties significantly influence bacterial and fungal community in bulk soil, rhizosphere soil, and phyllosphere – Xiao Kong – FEMS Microbiology Ecology

A Small Effort for Researchers, a Big Gain for Soil Metaproteomics– Marco Chiapello – Frontiers in Microbiology

Viruses and phages

*Genomic and ecological attributes of marine bacteriophages encoding bacterial virulence genes – Cynthia B. Silveira – BMC Genomics

Profiling of Human Gut Virome with Oxford Nanopore Technology – Jiabao Cao – bioRxiv

Bioinformatics

MICHELINdb: a web-based tool for mining of helminth-microbiota interaction datasets, and a meta-analysis of current research – Riccardo Scotti – Microbiome

Human microbiota associated-rodent models

I came across brilliant review by Jens Walter et al. that resonates with my thoughts in microbiome field. I also work in the same field doing similar experiments, but sometimes it is better to stop and look back what you have been doing. This review has discussed some important points on the transmissibility of human diseases in human microbiota-associated mouse models. They acknowledge the importance of human microbiota-associated mouse models as valuable resource in the microbiome field. However, through systematic review they demonstrate that according to current literature it is easily possible to transfer (any!) human disease in mice through microbiota transplant. The inflated positivity and hype around these experiments must be criticized. Most importantly, they talk about the relevance of negative transplant studies, which are seldom published, and urge to use rigorous statistics to improve the data interpretation. Following are some excerpts from the review, though reading full review is highly recommended.

The problem with the concept:

“Because a “normal” or “healthy” microbiome has not been defined yet, we use the term dysbiosis to refer solely to an altered microbiome associated with a specific disease or condition as compared to a control. Whether such “dysbiotic” microbiomes are the cause or consequence of disease, or whether both are caused by a third factor, is, in most instances, unproven.”

“There are two well-documented diseases in the microbiome field that link a microbial biomarker with causation in disease: Helicobacter pylori-associated peptic ulceration and gastric cancer, and Clostridium (or Clostridioides) difficile infection-associated diarrhea. However, causal inferences between complex microbiomes and other inflammatory, metabolic, neoplastic, and neuro-behavioral disorders have been neither compelling nor conclusive.”

“A substantial proportion of the taxa that comprise the human gut microbiome fail to colonize in the recipient animals. Most importantly, the ecological factors (such as diet, lifestyle, disease phenotype, and human genotype) that have driven the dysbiosis in humans in the first place are absent in the recipient rodents, making it unlikely that disease-associated alterations are replicated. Taxa that colonize at sufficient levels may not engage in the EVOLUTIONARY routed host-microbe interactions that they establish with their native host.”

“Consider H. pylori and C. difficile, two members of the human microbiome with established causality in human disease, neither of which exhibit sufficient colonization to cause reliable pathology in conventional murine models.”

Results from systematic review:

“Of 38 studies meeting the inclusion criteria, all but two (36/38; 95%) concluded that fecal transfer from diseased donors resulted in at least one phenotype of the human disease being greater in the recipient mice when compared with transfers from healthy donors.”

Of all the studies, 63% (24/38) of the studies tested for a dysbiosis in the original human donor samples, and only 29% (11/38) confirmed that at least some aspect (reduced diversity, ecosystem processes/services, loss or bloom of specific taxa, or shifts in metabolic capacity) of the “human dysbiosis” was replicated in the recipient animals. Consequently, the majority of studies did not attempt to identify the “causal component” of the microbiome. Only a few studies (34%; 13/38) identified potential underlying mechanisms linking the dysbiotic microbiome with disease.”

Issues with statistics 

“Often, a small number (1–5) of human donors is used per human disease and control group, and these “donor microbiomes” are then replicated in a larger number of individual mice, which are then often used for statistical inference.”

“The result is “pseudoreplication,” which artificially inflates the sample size, the chance for “false positive” findings, and the evidence for a scientific claim. This problem is amplified if donor samples are pooled before the inoculation of groups of rodents, which is common practice for both the “diseased” and healthy control samples. We found that 84% (32/38) of the published studies on HMA murine models used the individual animals as the statistical inference, although animal numbers were much higher than the number of human donors and therefore inflated. Only 16% of studies (6/38) were clear in their use of the individual human donor samples as the “N” for statistical inferences or used the same number of rodents as donors.”

“When virtually all reports are positive, as in our systematic review, the greater the doubt will be and the more justified the scrutiny should be.”

Suggestions for alternative experimental approach

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Why is it important to change?

“Specifically, the correction of altered microbiomes, be it by FMT, live biotherapeutics, or microbial products, will be beneficial only if the alterations are causal or contributory to the disease rather than a bystander response. Causal claims in the microbiome field are often overstated and disproportional to the experimental evidence from which they are derived, and it has become difficult to identify a disease state in which the microbiome has not been implicated in the scientific literature, a notion amplified in the popular press.”

“Sadly, most researchers and reviewers in the microbiome field, and almost all editors of high-impact journals, seem to regard acceptance of the null hypothesis as a failure. As with all scientific endeavor, our field would be served better if editorial policies of higher tier journals and guidelines of funding agencies discouraged any discrimination against negative data, replications, validations of experimental designs, and statistical analyses.”

January 27, 2020

In today’s Monday morning post – establishing causality for gut microbiome using human microbiota associated rodents, gut microbiota profiling in pregnant women after bariatric surgery, proteomics changes in bacteria, discovery of core microbiome of common bean rhizosphere and many more.

General Microbiome

Establishing or Exaggerating Causality for the Gut Microbiome: Lessons from Human Microbiota-Associated Rodents – Jens Walter – Cell

Microbial Genomics and Metagenomics in India: Explorations and Perspectives– Princy Hira – Proceedings of Indian National Science Academy

Human Microbiome

Longitudinal metabolic and gut bacterial profiling of pregnant women with previous bariatric surgery – Kiana Ashley West – Gut

Identifying determinants of bacterial fitness in a model of human gut microbial succession – Lihui Feng – PNAS

16S rDNA microbiome composition pattern analysis as a diagnostic biomarker for biliary tract cancer – Huisong Lee – World Journal of Surgical Oncology

Faecal microbiota transplantations and urinary tract infections – Jean Christophe Lagier – Lancet

Animal Microbiome

Influences of a Prolific Gut Fungus (Zancudomyces culisetae) on Larval and Adult Mosquito (Aedes aegypti)-Associated Microbiota – Jonas Frankel-Bricker – Applied and Environmental Microbiology

Functional dynamics of bacterial species in the mouse gut microbiome revealed by metagenomic and metatranscriptomic analyses – Youn Wook Chung – PlosOne

Early life microbiome perturbation alters pulmonary responses to ozone in male mice – Traci A. Brown – Physiological Reports

Evolution and maintenance of microbe-mediated protection under occasional pathogen attack – Anke Kloock – BioRxiv

Plant, root and soil microbiome

Community sequencing on a natural experiment reveals little influence of host species and timing but a strong influence of compartment on the composition of root endophytes in three annual Brassicaceae – Jose G Macia-Vicente – BioRxiv

Discovery of a spatially and temporally persistent core microbiome of the common bean rhizosphere – Nejc Stopnisek – BioRxiv

Resident and phytometer plants host comparable rhizosphere fungal communities in managed grassland ecosystems – Ricardo Schöps – Scientific Reports

Evaluation of fatty acid derivatives in the remediation of aged PAH-contaminated soil and microbial community and degradation gene response – Qingling Wang – Chemosphere

Techniques

Proteomic changes in bacteria caused by exposure to environmental conditions can be detected by Matrix-Assisted Laser Desorption/Ionization – Time of Flight (MALDI-ToF) Mass Spectrometry – Denise Chac – BioRxiv

Probiotics, prebiotics

Beneficial bile acid metabolism from Lactobacillus plantarum of food origin – Roberta Prete – Scientific Reports

Microbes in the news

Could a kid’s microbiome alter their behaviour? – Health24

Microbiome Therapeutics Market Report Forecast by Capital Investment, Industry Outlook, Opportunities & Trends 2024 – Fusion Science Academy

January 16, 2020

Good morning/night everyone!

What I love about writing for MD is the huge diversity of topics we’re meeting along the process of making the daily digest. Even though I’m mostly working on plant and root microbiome, it’s amazing to see how diverse is the world of microbiome and how much more there is to accomplish. Check out today’s digest- and don’t forget the News section as well! it is highly interesting!

General Microbiology

Detection of phylogenetic core groups in diverse microbial ecosystems, Marcos Parras Molto, bioRxiv

Isolation of an archaeon at the prokaryote–eukaryote interface, Hiroyuki Imachi, Nature

Ferrosomes are iron storage organelles formed by broadly conserved gene clusters in bacteria and archaea, Carly R. Grant , bioRxiv

Human microbiome

Distribution of microbial communities and core microbiome in successive wound grades of diabetic foot ulcer individuals, Apoorva Jnana, AEM

Animal microbiome

Parasites modulate the gut-microbiome in insects: A proof-of-concept study, Brian Fredensborg, PlosONE

The effect of diet on the gastrointestinal microbiome of juvenile rehabilitating green turtles (Chelonia mydas), Jennifer Bloodgood ,PlosONE

Rotten-skin disease significantly changed giant spiny frog(Paa spinosa) gut microbiota, Tuoyu He, bioRxiv

Bacterial Biogeography of the Colon in Dogs With Chronic Inflammatory Enteropathy, Paula Giaretta, Veterniary Pathology

Plant and environmental microbiome

Biostimulants applied to maize seeds modulate the enzymatic activity and metaproteome of the rhizosphere, Monica Mattarozzi, Applied Soil Ecology

Biological inhibition of soil nitrification by forest tree species affects Nitrobacter populations, Amandine Laffite, Environmental Microbiology

Extremophile microalgae: An overview, Veronica Malavasi , Journal of Phycology

Methods in microbiome

**Taxonomic classification method for metagenomics based on
core protein families with Core-Kaiju
, Anna Tovo, bioRxiv

**Metagenomic sequencing with spiked primer enrichment for viral diagnostics and genomic surveillance, Xianding Deng , Nature Microbiology

Quantitative PCR provides a simple and accessible method for quantitative microbiota profiling, Ching Jian, PlosONE

The effect of storage conditions on microbial communities in stool, Kristien Nel Van Zyl, PlosONE

Beyond mass spectrometry, the next step in proteomics, Winston and Gregory Timp, Science Advances

Microbiome in the news

Illumina Announces New Sequencing System, Partnership with Roche and Software Suite to Accelerate Adoption of Genomics

Integrating microbiomes into clinical trials – the importance of time

Bayer and Azitra partnership looks to develop skin microbiome products for eczema

**Please read! our mental health is the MOST important thing in our life! Researchers facing ‘shocking’ levels of stress, survey reveals