April 4, 2020

Good morning and salutations from Singapore! This is the first digest that I’m contributing for the blog, so I hope my selections are interesting to you all! Today’s digest begins with some recent COVID-19 pre-prints, before getting into papers on a diverse range of microbiome-related topics. Highlights today include a study on cats potentially harbouring SARS-CoV-2 (nooo…), the effect of C-section birth on the vaginal microbiota of adult women, and the impact of the virome on biogeochemical cycling in Lake Baikal.

COVID-19

Preprint: Characterization and treatment of SARS-CoV-2 in nasal and bronchial human airway epithelia – Pizzorno et al.

* Preprint: SARS-CoV-2 neutralizing serum antibodies in cats: a serological investigation – Zhang et al.

Preprint: Direct RNA sequencing and early evolution of SARS-CoV-2 – Taiaroa et al.

General microbiome

Review: Microbiota and metabolites in rheumatic diseases – Tong et al. – Autoimmunity Reviews

Human respiratory microbiome

Preprint: Distinctive airway microbial ecology of smokers and asthmatics – Turek et al.

Microbial burden and viral exacerbations in a longitudinal multicenter COPD cohort – Bouquet et al.Respiratory Research

Human gut microbiome

An in vitro evaluation of the effects of different statins on the structure and function of human gut bacterial community – Zhao et al.PLoS ONE

Human vaginal microbiome

* A cross-sectional pilot study of birth mode and vaginal microbiota in reproductive-age women – Stennett et al.PLoS ONE

Animal experiments

Polysaccharide extracted from WuGuChong reduces high-fat diet-induced obesity in mice by regulating the composition of intestinal microbiota – Wang et al.Nutrition & Metabolism

Animal microbiome

Intestinal microbes: an axis of functional diversity among large marine consumers – Scott et al.Proceedings of the Royal Society B

Plant, root, and soil microbiome

The response of soil and phyllosphere microbial communities to repeated application of the fungicide iprodione: Accelerated biodegradation or toxicity? – Katsoula et al.FEMS Microbiology Ecology

Divergent patterns of microbial community composition shift under two fertilization regimes revealed by responding species – Yao et al.Applied Soil Ecology

Water and extremophile microbiome

* Preprint: New Viral Biogeochemical Roles Revealed Through Metagenomic Analysis of Lake Baikal – Coutinho et al.

Bioinformatics

Ten simple rules for providing effective bioinformatics research support – Kumuthini et al.PLoS Computational Biology

Finally, remember that physical isolation doesn’t have to mean social isolation. Call someone you haven’t talked to in a while, I’m sure they’ll appreciate it! You’re doing great 😀

March 24, 2020

Today’s Digest features a study to use engineered Acinetobacter to boost host immunity against bacterial pneumonia, and a review on the relationship between plant-microbe symbiosis and agriculture.The coronavirus is probably on the mind of all of us. Listen to Dr. Blaser talk about it. Stay well and keep reading.

Job

Research Tech II – CHOP Microbiome Center

COVID-19

Editorial: Coronavirus: three things all governments and their science advisers must do now – Nature

World View: Don’t rush to deploy COVID-19 vaccines and drugs without sufficient safety guarantees – Shibo Jiang – Nature

Q&A: The novel coronavirus outbreak causing COVID-19 – Dale Fisher & David Heymann – BMC Medicine

** Dr. Martin Blaser answers coronavirus questions from Twitter (full video available) – mlive.com

General microbiology

Regulation of fungal decomposition at single-cell level – Michiel Op De Beeck et al. – The ISME Journal

Antimicrobial resistance

** Broad-spectrum suppression of bacterial pneumonia by aminoglycoside-propagated Acinetobacter baumannii – M. Indriati Hood-Pishchany et al. – PLoS Pathogens

Vulnerability and resistance in the spatial heterogeneity of soil microbial communities under resource additions – Kelly Gravuer et al. – PNAS

Discovery of a novel integron-borne aminoglycoside resistance gene present in clinical pathogens by screening environmental bacterial communities – Maria-Elisabeth Böhm et al. – Microbiome

Characterization of antibiotic resistance and host-microbiome interactions in the human upper respiratory tract during influenza infection – Lingdi Zhang et al. – Microbiome

Human gut microbiome

The role of gut microbiota in bone homeostasis – Jyotirmaya Behera et al. – Bone

Animal experiments

Docosahexaenoate-enriched fish oil and medium chain triglycerides shape the feline plasma lipidome and synergistically decrease circulating gut microbiome-derived putrefactive postbiotics – Matthew I. Jackson & Dennis E. Jewell – PLoS One

Animal microbiome

The rodent vaginal microbiome across the estrous cycle and the effect of genital nerve electrical stimulation – Micah Levy et al. – PLoS One

The different dietary sugars modulate the composition of the gut microbiota in honeybee during overwintering – Hongfang Wang et al. – BMC Microbiology

Most dominant roles of insect gut bacteria: digestion, detoxification, or essential nutrient provision? – Tian-Zhong Jing et al. – Microbiome

Predictive ability of host genetics and rumen microbiome for subclinical ketosis – Grum Gebreyesus et al. – Journal of Dairy Science

Plant, root and soil microbiome

** Review: Agriculture and the Disruption of Plant–Microbial Symbiosis – Stephanie S. Porter & Joel L. Sachs – Trends in Ecology & Evolution

Taxon-specific microbial growth and mortality patterns reveal distinct temporal population responses to rewetting in a California grassland soil – Steven J. Blazewicz et al. – The ISME Journal

Reusing oil and gas produced water for agricultural irrigation: Effects on soil health and the soil microbiome – Hannah Miller et al. – Science of the Total Environment

Network analysis reveals the strengthening of microbial interaction in biological soil crust development in the Mu Us Sandy Land, northwestern China – Hong Zhou et al. – Soil Biology and Biochemistry

Water and extremophile microbiome

Performance and functional microbial communities of denitrification process of a novel MFC-granular sludge coupling system – Qiujin Deng et al. – Bioresource Technology

Microbial community structure and functional properties in permanently and seasonally flooded areas in Poyang Lake – Yang Liu et al. – Scientific Reports

Associations between redox-sensitive trace metals and microbial communities in a Proterozoic ocean analogue – Kathryn I. Rico et al. – Geobiology

Reactor configuration influences microbial community structure during high-rate, low-temperature anaerobic treatment of dairy wastewater – Paul G McAteer et al. – Bioresource Technology

Bioinformatics

Multiple-Disease Detection and Classification across Cohorts via Microbiome Search – Xiaoquan Su et al. – mSystems

Microbes in the news

How the mi­cro­biome is in­volved in the de­vel­op­ment of can­cer – Christian Urban – MedicalXpress

How a Fiber-Rich Plant-Based Diet Keeps Your Gut Microbiome Happy and Healthy – Chelsea Debret – One Green Planet

Gerhart: Keeping well during a pandemic – Timothy Gerhart – Your Valley

Study shows positive effect of cover crops on soil microbiome – AgriNews

Microbiome search engine can increase efficiency in disease detection and diagnosis – Chinese Academy of Sciences – EurekAlert

7 Ways A Gastroenterologist Supports His Microbiome & Overall Health – Marvin Singh – mbg Health

Infliximab Helps Gut Microbiome in Children with Crohn’s, Study Finds – Ana Pena – IBD News Today

Microbes on the market

DuPont, APC Microbiome Ireland link up for babies – Melody M. Bomgardner – C&EN

March 14, 2020

Events

NYSCC Microbiome Program Postponed – Happi

General microbiome

Weakest link dynamics predict apparent antibiotic interactions in a model cross-feeding community – EM Adamowicz – bioRxiv

Simultaneous copper removal and electricity production and microbial community in microbial fuel cells with different cathode catalysts – Y Wu – Bioresource Technology

Multi-site human microbiome

Disrupted tongue microbiota and detection of nonindigenous bacteria on the day of allogeneic hematopoietic stem cell transplantation – S Oku – PLoS Pathogens

Human vaginal microbiome

Changes in key vaginal bacteria among postpartum African women initiating intramuscular depot-medroxyprogesterone acetate – BM Whitney – PLoS One

Human gut microbiome

Gut Microbial Protein Expression in Response to Dietary Patterns in a Controlled Feeding Study: A Metaproteomic Approach – S Pan – Microorganisms

A Story of Liver and Gut Microbes: How Does the Intestinal Flora Affect Liver Disease? A Review of the Literature – M Giuffrè – American Journal of Physiology

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

Animal experiments 

Early-life microbial intervention reduces colitis risk promoted by antibiotic-induced gut dysbiosis – J Miyoshi – bioRxiv

Low mutational load and high mutation rate variation in gut commensal bacteria – RS Ramiro – PLoS Biology

Response to mechanical loading in rat Achilles tendon healing is influenced by the microbiome – F Dietrich-Zagonel – PLoS One

Plant, root, and soil microbiome

Testing the two-step model of plant root microbiome acquisition under multiple plant species and soil sources – HR Barajas – bioRxiv

A survey of invasive plants on grassland soil microbial communities and ecosystem services – JK Bell – Scientific Data

Host identity is more important in structuring bacterial epiphytes than endophytes in a tropical mangrove forest – H Yao – FEMS Microbiology Ecology

Water and extremophile microbiome 

Metagenomic Insights into Microbial Metabolisms of a Sulfur-Influenced Glacial Ecosystem – CB Trivedi – bioRxiv

Diel, daily, and spatial variation of coral reef seawater microbial communities – L Weber – PLoS One

Food microbiology

Shotgun Metagenomic Analysis Reveals New Insights on Bacterial Community Profiles in Tempeh – A Yulandi – bioRxiv

Phages and viruses

Identification of viruses belonging to the family Partitiviridae from plant transcriptomes – Y Jo – bioRxiv

The Restrictome of Flaviviruses – L Berthoux – Virologica Sinica

Plasma virome of 781 Brazilians with unexplained symptoms of arbovirus infection include a novel parvovirus and densovirus – E Fahsbender – PLoS One

Techniques

Intestinal Organoids: A Tool for Modelling Diet–Microbiome–Host Interactions – J Rubert – Trends in Endocrinology and Metabolism

Microbes in the news

Microbiome studies may require correction for PPI use – MD edge

As You Age, So Does Your Microbiome – Technology Networks

DuPont Nutrition & Biosciences and APC Microbiome Ireland on infant gut health project – Nutra Ingredients

The Role of Zinc: It’s More Important than You Think –  UMass Lowell

Microbiome Therapeutics Market to Make Great Impact in near Future by 2026 – Nyse News Times

Mapping Bacterial Neighborhoods in Gut – Mirage News

Non-microbe picks

Sorry, we’re open: Golden Open Access and inequality in the natural sciences – RJ Gray – bioRxiv

Quantifying and contextualizing the impact of bioRxiv preprints through automated social media audience segmentation – J Carlson – bioRxiv

Comparing quality of reporting between preprints and peer-reviewed articles in the biomedical literature – CFD Carneiro – bioRxiv

Studying the dynamics of the gut microbiota using metabolically stable isotopic labeling and metaproteomics – P Smyth – bioRxiv

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 21, 2020

This Friday, read about the potential influence of microbiomes in hominin evolution, gut microbiome in patients with Sjögren’s syndrome, new antibiotics discovered through comparative genomics, and more. Happy reading!

General microbiome

*The Internal, External and Extended Microbiomes of Hominins – Robert R. Dunn – Front. Ecol. Evol.

A Deep Learning Approach to Antibiotic Discovery– Jonathan M. Stokes – Cell

Review: Next-generation physiology approaches to study microbiome function at single cell level – Roland Hatzenpichler – Nature Reviews Microbiology

Patterns of partnership: surveillance and mimicry in host-microbiota mutualisms – Travis J Wiles & Karen Guillemin – Current Opinion in Microbiology

Review: Innovative and rapid antimicrobial susceptibility testing systems – Alex van Belkum – Nature Reviews Microbiology

Gut microbiome

*Gut dysbiosis is prevailing in Sjögren’s syndrome and is related to dry eye severity– Jayoon Moon – PlosOne

Review: Healthy Human Gastrointestinal Microbiome: Composition and Function After a Decade of Exploration – Wenly Ruan – Digestive Diseases and Sciences

Review: Gut microbiota-derived metabolites as key actors in inflammatory bowel disease– Aonghus Lavelle & Harry Sokol – Nature Reviews Gastroenterology & Hepatology

Review: Microbiome in Colorectal Cancer: How to Get from Meta-omics to Mechanism?–Dominik Ternes – Trends in Microbiology

Urinary microbiome

Review: Urinary tract infections: microbial pathogenesis, host–pathogen interactions and new treatment strategies – Roger D. Klein & Scott J. Hultgren – Nature Reviews Microbiology

Vaginal microbiome

The microbiome and gynaecological cancer development, prevention and therapy – Paweł Łaniewski – Nature Reviews Urology

Animal microbiome

Coordinated transformation of the gut microbiome and lipidome of bowhead whales provides novel insights into digestion – Carolyn A. Miller – The ISME Journal

Animal experiment

*Evolution-guided discovery of antibiotics that inhibit peptidoglycan remodelling – Elizabeth J. Culp – Nature

The Gene Expression Profile of Uropathogenic Escherichia coli in Women with Uncomplicated Urinary Tract Infections Is Recapitulated in the Mouse Model – Arwen E. Frick-Cheng – bioRxiv

Sustained IFN-I stimulation impairs MAIT cell responses to bacteria by inducing IL-10 during chronic HIV-1 infection – X. Tang – Science Advance

Bioinformatics

Microbial resolution of whole genome shotgun and 16S amplicon metagenomic sequencing using publicly available NEON data– Kyle D. Brumfield – PlosOne

Viruses & Phages

Respiratory viruses in mechanically ventilated patients: a pilot study – Raquel Nazareth – BMC Pulmonary Medicine

Antibiotic resistance- can reducing outpatient prescription help?

Antibiotic resistance is increasing at a rapid rate making pathogens and other bacterial species resistant to currently available antibiotics. Its impact is already visible globally and clock is ticking faster than ever pushing scientists all over the world to develop better antibiotics with higher specificity (only!) for pathogens. Antibiotic consumption is directly related to antibiotic resistance and policies across the continents are underway to control the consumption and prescription of antibiotics.

A recent article in elife introduces the problem of unnecessary antibiotic use and provides data to avert it.

Inappropriate antibiotic use leads to increased risk of adverse events, disruption of colonization resistance and other benefits of the microbial flora, and bystander selection for antibiotic resistance, with little to no health gains for the patient.”

To address the problem, Christine et al. used publically available data (NAMCS/NHAMCS) and mathematical models to find what would happen if antibiotic consumption is averted in hypothetical scenarios.

What they did?
The analysis included sixteen antibiotics that are frequently prescribed in the outpatient setting and nine potentially pathogenic bacterial species that are commonly carried in the normal human microbiome. For each antibiotic-species pair, they estimated the proportion of antibiotic exposures experienced by that species that could be averted under four hypothetical scenarios.

1) Eliminate unnecessary antibiotic use across all outpatient conditions.
2) Eliminate all antibiotic use for outpatient respiratory conditions for which antibiotics are not indicated.
3) Eliminate all antibiotic use for acute sinusitis.
4) Prescribe nitrofurantoin* for all cases of cystitis in women.”

“*Nitrofurantoin- a recommended first-line therapy with good potency against common uropathogens, low levels of resistance, and decreased risk of collateral damage to the intestinal microbiome”

Results

Picture1

Heatmaps showing the estimated percentage of species exposures to each antibiotic or antibiotic class that could be averted if A: unnecessary antibiotic prescriptions across all outpatient conditions, B: all antibiotic use for outpatient respiratory conditions for which antibiotics are not indicated, C: all antibiotic use for acute sinusitis, or D: non-nitrofurantoin treatment of cystitis in women was eliminated. Drug class results include prescriptions of all antibiotics in that class, as identified by the Lexicon Plus classification system.
Abbreviations: Antibiotics (y-axis): AMX-CLAV=amoxicillin-clavulanate,, MACR/LINC=macrolides/lincosamides, TMP-SMX=sulfamethoxazole-trimethoprim;

Organisms (x-axis): EC=E. coli, HI=H. influenzae, KP=K. pneumoniae, MC=M. catarrhalis, PA=P. aeruginosa, SA=S. aureus, SAg=S. agalactiae, SP=S. pneumoniae, SPy=S. pyogenes; PY=person-years


The darker shades in panel A (scenario 1) clearly indicated that “elimination of unnecessary antibiotic prescriptions across all outpatient conditions would prevent 6 to 48% (IQR: 17 to 31%) of antibiotic-species exposures. If all unnecessary antibiotic use could be prevented, over 30% of exposures to amoxicillin-clavulanate, penicillin, azithromycin, clarithromycin, levofloxacin, and doxycycline across most potential pathogens of interest could be averted.

In panel D (scenario 4), they found that prescribing nitrofurantoin not only averted antibiotic exposure in non-causative bacterial species (bystanders) but also in causative species for cystitis in women.
Overall, 27% of ciprofloxacin use is associated with acute cystitis in women. Organisms that are not causative pathogens of cystitis have proportions of avertable exposures close to or less than 27%, but a substantially higher proportion of exposures could be averted among causative pathogens – 33%, 36%, and 44% of ciprofloxacin exposures to E. coli, K. pneumoniae, and P. aeruginosa, respectively.

The study addresses the limitations with regard to data availability and reporting in public database. Authors are cautious and point out,

It is important to note that the reduction in antibiotic exposures estimated here does not translate to the same reduction in the prevalence of resistance or in the morbidity and mortality attributable to resistance. Additionally, in this analysis, we give each exposure equal weight. However, the selective pressure imposed by a single exposure depends on a number of variables, including pharmacokinetics, pharmacodynamics, distribution of bacteria across body sites, and bacterial population size. For example, we might expect that the probability of resistance scales with population size, and thus that an exposure received by an individual with higher bacterial load will have a larger impact on resistance.

Overall, this study indeed provides evidence that “improved prescription of antibiotics has the potential to prevent antibiotic exposure experienced by bacterial species throughout microbiome.

February 2, 2020

Have a nice Sunday! Today, in this Digest we have several papers about the relationship between the microbiome and different neurological/psychological conditions, such as ASD, depression or anxiety, or about the microbiome and the inflammatory bowel disease. Enjoy!

 

Human and General Microbiome

Review: Host-microbiota interactions in inflammatory bowel disease – Roberta Caruso – Nature Reviews Immunology 

Review: Considering gut microbiota in treatment of type 2 diabetes mellitus – Aneseh Adeshirlarijaney – Gut Microbes

Review: Gut Dysbiosis Dysregulates Central and Systemic Homeostasis via Suboptimal Mitochondrial Function: Assessment, Treatment and Classification Implications – George Anderson – Current Topics in Medicinal Chemistry

Book Chapter: Immune-Kynurenine Pathways and the Gut Microbiota-Brain Axis in Anxiety Disorders – Alper Evrensel – Anxiety Disorders 

Book Chapter: Autism and Gut-Brain Axis: Role of Probiotics – Saravana Babu Chidambaram – Personalized Food Intervention and Therapy for Autism Spectrum Disorder Management

Review: Microbial-Based and Microbial-Targeted Therapies for Inflammatory Bowel Diseases – Akihiko Oka – Digestive Diseases and Sciences

Precision Microbiome Modulation with Discrete Dietary Fiber Structures Directs Short-Chain Fatty Acid Production – Edward C. Deehan – Cell Host and Microbe

Urinary microbiome in uncomplicated and interstitial cystitis: is there any similarity? – Süleyman Yıldırım – World Journal of Urology

The gut microbiota response to helminth infection depends on host sex and genotype – Fei Ling – The ISME Journal 

Metabolism of multiple glycosaminoglycans by Bacteroides thetaiotaomicron is orchestrated by a versatile core genetic locus – Didier Ndeh – Nature Communications

Gestational diabetes and the human salivary microbiota: a longitudinal study during pregnancy and postpartum – Mie K. W. Crusell – BMC Pregnancy and Childbirth 

Vaginal dysbiosis associated-bacteria Megasphaera elsdenii and Prevotella timonensis induce immune activation via dendritic cells – Nienke H.van Teijlingen – Journal of Reproductive Immunology

Variability in Skin Microbiota between Smokers, Former Smokers, and Non-Smokers – Katherine G. Thompson – Journal of the American Academy of Dermatology

Microbiota changes and Intestinal Microbiota Transplantation in Liver Diseases and Cirrhosis – Jasmohan S. Bajaj – Journal of Hepatology

Host-Specific Evolutionary and Transmission Dynamics Shape the Functional Diversification of Staphylococcus epidermidis in Human Skin – Wei Zhou – Cell

 

Animal Microbiome and Animal Experiments

Effect of probiotic administration on gut microbiota and depressive behaviors in mice – Quan Feng Liu – DARU Journal of Pharmaceutical Sciences

Deciphering the bifidobacterial population within the canine and feline gut microbiota – Giulia Alessandri – Applied and Environmental Microbiology

Dissecting the factors shaping fish skin microbiomes in a heterogeneous inland water system – Yaron Krotman – Microbiome

Prenatal exposure to glufosinate ammonium disturbs gut microbiome and induces behavioral abnormalities in mice – Tianyu Dong – Journal of Hazardous Materials

High prevalence of Phasi Charoen-like virus from wild-caught Aedes aegypti in Grenada, W.I. as revealed by metagenomic analysis – Maria E. Ramos-Nino – PLoS ONE

Common structuring principles of the Drosophila melanogaster microbiome on a continental scale and between host and substrate – Yun Wang – Environmental Microbiology Reports

Community assembly of the native C. elegans microbiome is influenced by time, substrate, and individual bacterial taxa – Julia Johnke – Environmental Microbiology 

 

Environmental Microbiome

Patterns of local, intercontinental and inter-seasonal variation of soil bacterial and eukaryotic microbial communities – Johan De Gruyter – FEMS Microbiology Ecology

Dynamics and ecological distributions of the Archaea microbiome from inland saline lakes (Monegros Desert, Spain) – Mateu Menéndez-Serra – FEMS Microbiology Ecology