Category Archives: Human gut

August 20, 2022

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Have a nice weekend! Today, in this brief Digest: Lung microbiota and PM exposure, Akkermansia genomic variability, sulfonation, microbiome and cholesterol, and a new role for Blautia wexlerae.

Human and General Microbiome

The Lung Microbiota Affects Pulmonary Inflammation and Oxidative Stress Induced by PM(2.5) Exposure – Simin Wang – Environmental Science & Technology

A thousand metagenome-assembled genomes of Akkermansia reveal phylogroups and geographical and functional variations in the human gut – Qing-Bo Lv – Frontiers in Cellular and Infection Microbiology

Intestinal TLR4 deletion exacerbates acute pancreatitis through gut microbiota dysbiosis and Paneth cells deficiency – Mei Qi-Xiang – Gut Microbes

A biosynthetic pathway for the selective sulfonation of steroidal metabolites by human gut bacteria – Lina Yao – Nature Microbiology

Review: Altered gut microbiota patterns in COVID-19: Markers for inflammation and disease severity – Chiranjib Chakraborty – World Journal of Gastroenterology

Animal Model Microbiome and Experiments

Characterization of interactions of dietary cholesterol with the murine and human gut microbiome – Henry H Le – Nature Microbiology

Gut-derived bacterial flagellin induces beta-cell inflammation and dysfunction – Torsten P M Scheithauer – Gut Microbes

Rapid evolution of a novel protective symbiont into keystone taxon in Caenorhabditis elegans microbiota – Alejandra Wu-Chuang – Scientific Reports

Beneficial Microbes and Compounds

Oral administration of Blautia wexlerae ameliorates obesity and type 2 diabetes via metabolic remodeling of the gut microbiota – Koji Hosomi – Nature Communications

Fecal microbiota transplantation can improve cognition in patients with cognitive decline and Clostridioides difficile infection – Soo-Hyun Park – Aging

August 16, 2022

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Human and General Microbiome

Crohn’s disease in endoscopic remission, obesity, and cases of high genetic risk demonstrates overlapping shifts in the colonic mucosal-luminal interface microbiome – Jonathan P Jacobs – Genome Medicine

Preservation of fecal microbiome is associated with reduced severity of Graft-versus-Host Disease – Marina Burgos da Silva – Blood

Cobamide Sharing Is Predicted in the Human Skin Microbiome – Mary Hannah Swaney – mSystems

Postnatal exposure to ambient air pollutants is associated with the composition of the infant gut microbiota at 6-months of age – Maximilian J Bailey – Gut Microbes

Shotgun metagenomic sequencing reveals skin microbial variability from different facial sites – Qingzhen Wei – Frontiers in Microbiology

Review: Recent insights into the role of microbiome in the pathogenesis of obesity – Eduard W J van der Vossen – Therapeutic Advances in Gastroenterology

Model Animal Microbiome

Impact of habitual chewing on gut motility via microbiota transition – Fukie Yaoita – Scientific Reports

Resources to Facilitate Use of the Altered Schaedler Flora (ASF) Mouse Model to Study Microbiome Function – Alexandra Proctor – mSystems

Non-model Animal Microbiome

The microbiome of a bacterivorous marine choanoflagellate contains a resource-demanding obligate bacterial associate – David M Needham – Nature Microbiology

Characterization of presence and activity of microRNAs in the rumen of cattle hints at possible host-microbiota cross-talk mechanism – Sara Ricci – Scientific Reports

Full-length 16S rRNA amplicon sequencing reveals the variation of epibiotic microbiota associated with two shrimp species of Alvinocarididae: possibly co-determined by environmental heterogeneity and specific recognition of hosts – Min Hui – PeerJ

Systematic profiling of the chicken gut microbiome reveals dietary supplementation with antibiotics alters expression of multiple microbial pathways with minimal impact on community structure – Angela Zou – Microbiome

Environmental Microbiome

Analysis of the anaerobic digestion metagenome under environmental stresses stimulating prophage induction – Alessandro Rossi – Microbiome

Food Microbiome

Microbiome and Metabiotic Properties of Kefir Grains and Kefirs Based on Them –  Ding Fan – Microbiology

Profiling the role of microorganisms in quality improvement of the aged flue-cured tobacco – Xinying Wu – BMC Microbiology

August 10, 2022

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General microbiome

Microbiome-associated human genetic variants impact phenome-wide disease risk – Markowitz et al. – PNAS

Microbial risk score for capturing microbial characteristics, integrating multi-omics data, and predicting disease risk – Wang et al. – Microbiome

[REVIEW]A framework for testing the impact of co-infections on host gut microbiomes – Schmid et al. – Animal Microbiome

Human vaginal microbiome

Vaginal microbiota and personal risk factors associated with HPV status conversion—A new approach to reduce the risk of cervical cancer? – Yang et al. – PLOS One

Human gut microbiome

[REVIEW]The role of the gut microbiota in multiple sclerosis – Correale, Hohlfeld & Baranzini

Specific gut microbiota alterations in essential tremor and its difference from Parkinson’s disease – Zhang et al. – NPJ Parkinson’s Disease

Identification of clinical and ecological determinants of strain engraftment after fecal microbiota transplantation using metagenomics – Podlesny et al. – Cell Reports Medicine

Alterations in gut microbiota of esophageal squamous cell carcinoma patients – Cheung et al. – Journal of Gastroenterology and Hepatology

Targeted suppression of human IBD-associated gut microbiota commensals by phage consortia for treatment of intestinal inflammation – Federici et al. – Cell

Animal microbiome

Camel milk microbiota: A culture-independent assessment – Rahmeh et al. – Food Research International

Effect of processing on the anti-inflammatory efficacy of cocoa in a high fat diet-induced mouse model of obesity – Weikart et al. – The Journal of Nutritional Biochemistry

The impacts of viral infection and subsequent antimicrobials on the microbiome-resistome of growing pigs – Gaire et al. – Microbiome

Plant, root, and soil microbiome

Soil microbial community structures are shaped by agricultural systems revealing little temporal variation – Fox, Widmer & Lüscher – Environmental Research

Water and extremophile microbiome (sea, rivers, lakes, glaciers, permafrost, high-salt)

The streamwater microbiome encodes hydrologic data across scales – URycki et al. – Science of The Total Environment

Bioinformatics / Data

[PREPRINT]Lake iTag measurements over nineteen years, introducing the limony dataset – Rohwer & McMahon – bioRxiv

August 6, 2022

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Human and General Microbiome

The oral microbiome and lung cancer risk: An analysis of 3 prospective cohort studies – Emily Vogtmann – Journal of the National Cancer Institute

Antibiotic resistance genes in the gut microbiota of mothers and linked neonates with or without sepsis from low- and middle-income countries – M J Carvalho – Nature Microbiology

Crosstalk between mucosal microbiota, host gene expression, and sociomedical factors in the progression of colorectal cancer – Namjoo Kim – Scientific Reports

Using Culture-Enriched Phenotypic Metagenomics for Targeted High-Throughput Monitoring of the Clinically Important Fraction of the β-Lactam Resistome – Zhiguo Zhang – Environmental Science & Technology

Review: Porphyromonas gingivalis and dental stem cells crosstalk amplify inflammation and bone loss in the periodontitis niche – Devaraj Ezhilarasan – Journal of Cellular Physiology

Beneficial Microbes and Compounds

On the effect of flavonoids and dietary fibre in lingonberries on atherosclerotic plaques, lipid profiles and gut microbiota composition in Apoe(-/-) mice – Jiyun Liu – International Journal of food Sciences and Nutrition

The Gut-Brain-Microbiome Connection: Can Probiotics Decrease Anxiety and Depression? – Jennifer Maybee – Issues in Mental Health Nursing

The effect of Lactobacillus rhamnosus B10 on alcoholic liver injury and intestinal microbiota in alcohol-induced mice model – Xia Li – Journal of Food Biochemistry

Model Animal Microbiome

The effect of young blood plasma administration on gut microbiota in middle-aged rats – Taha Ceylani – Archives of Microbiology

Non-Model Animal Microbiome

Quantitative microbial population study reveals geographical differences in bacterial symbionts of Ixodes ricinus – Aleksandra I Krawczyk – Microbiome

Host taxonomy determines the composition, structure, and diversity of the earthworm cast microbiome under homogenous feeding conditions – Manuel Aira – FEMS Microbiology Ecology

Ruminal Microbiota Determines the High-Fiber Utilization of Ruminants: Evidence from the Ruminal Microbiota Transplant – Xiaodong Chen – Microbiology Spectrum

Bioinformatics and Microbiome Analysis Techniques

Computational approach to modeling microbiome landscapes associated with chronic human disease progression – Lu Li – PLoS Computational Biology

Guideline for the analysis of the microbial communities of the human upper airways – Leonardo Mancabelli – Journal of Oral Microbiology

August 5, 2022

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Today’s digest is brief and includes research examining the association between the gut microbiota and Gulf War illness, determining the distribution of psychrophilic microorganisms in a beef slaughterhouse, measuring the quality of DNA sequences via degradation, and more.

Happy Friday!

General microbiome

Measuring quality of DNA sequence data via degradation – Karr et al. – PLOS One

Atypical integrative element with strand-biased circularization activity assists interspecies antimicrobial resistance gene transfer from Vibrio alfacsensis – Nonaka et al. – PLOS One

Human vaginal microbiome

Association of key species of vaginal bacteria of recurrent bacterial vaginosis patients before and after oral metronidazole therapy with short- and long-term clinical outcomes – Mollin et al. – PLOS One

Human gut microbiome

Examining the association between the gastrointestinal microbiota and Gulf War illness: A prospective cohort study – Kates et al. – PLOS One

Food microbiology

Distribution of psychrophilic microorganisms in a beef slaughterhouse in Japan after cleaning – Nakamura et al. – PLOS One

Science, publishing, and career

Ten simple rules for leveraging virtual interaction to build higher-level learning into bioinformatics short courses – Bacon et al. – PLOS Computational Biology

August 03, 2022

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Pregnancy and early life

The abundance of Ruminococcus bromii is associated with faecal butyrate levels and atopic dermatitis in infancy – Sasaki et al. – Allergy

Human oral microbiome

Smokeless tobacco consumption induces dysbiosis of oral mycobiome: a pilot study – Sajid et al. – Applied Microbiology and Biotechnology

Human gut microbiome

The Proteome of Extracellular Vesicles Produced by the Human Gut Bacteria Bacteroides thetaiotaomicron In Vivo Is Influenced by Environmental and Host-Derived Factors – Stentz et al. – Applied and Environmental Microbiology

Improved gut microbiome recovery following drug therapy is linked to abundance and replication of probiotic strains – FitzGerald et al. – Gut Microbes

[REVIEW]Targeting microbiota-host interactions with resveratrol on cancer: Effects and potential mechanisms of action – Wang et al. – Critical Reviews in Food Science and Nutrition

Emerging frontiers of antibiotics use and their impacts on the human gut microbiome – Kumari et al. – Microbiological Research

Animal experiments (mouse/rat experiments, chickens/pigs on different diets)

Microbiota of the Pregnant Mouse: Characterization of the Bacterial Communities in the Oral Cavity, Lung, Intestine, and Vagina through Culture and DNA Sequencing – Greenberg et al. – Microbiology Spectrum

Phages and viruses

Viral biogeography of the mammalian gut and parenchymal organs – Shkoporov – Nature Microbiology

Bioinformatics

Namco: a microbiome explorer – Dietrich et al. – Microbial Genomics

MiCloud: A unified web platform for comprehensive microbiome data analysis – Gu et al. – PLOS One

August 1st, 2022

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God morgon!

Good morning from Sweden.

Today’s digest has studies from diverse topics but the one that caught my attention is a preprint that addresses the controversial question of presence of a ‘normal blood microbiota’ in humans. The authors of this preprint analysed about 10,000 humans samples and provide evidence that there is no core blood microbiota.

A new preprint describes a unique Taleocin (a bacteriocin) from Pseudomonas syringae which defies the convention that bacteriocins have a narrow spectrum. The bacteriocin has a broad range killing activity against agriculturally important pathogens like Erwinia amylovora and Xanthomonas perforans as well as against the clinical human pathogen Salmonella choleraesuis.

Another preprint reports metabolic interactions responsible for unusually high Iron and lipid content in Geobacter sulfurreducens, a bacterium known iron reducing bacterium in the soil. Another environmental study found that human pathogens are the major carriers of antibiotic resistance genes in the Yangtze river – one of the longest in the world. This is in contrast to prevalent belief that conventional supercarriers are Enterococcus spp. and other fecal indicator bacteria.

Elsewhere in the digest is a preprint from my previous lab where my old colleagues have reported a small RNA and metal dependent mechanism that regulates the survival of Acinetobacter baumannii under oxidative stress.

As a bonus, there is a super intriguing preprint where the authors have actually provided evidence that coming up with creative and funny titles for your papers can help them gain more visibility and citations! So, all of you writing an article or planning to write one soon, this is a great tip!

I hope you will enjoy reading today’s digest and have a great week ahead!

Human gut

Microbiota responses to different prebiotics are conserved within individuals and associated with habitual fiber intake – Zachary C. Holmes, et al., Microbiome

Near-sterile sites

Preprint: No evidence for a common blood microbiome based on a population study of 9,770 healthy humans – Cedric C.S. Tan, et al.

Water microbiome

Supercarriers of antibiotic resistome in a world’s large river – Jiawen Wang, et al., Microbiome

Oceanospirillales containing the DMSP lyase DddD are key utilisers of carbon from DMSP in coastal seawater – Jingli Liu, et al., Microbiome

Community structure of coral microbiomes is dependent on host morphology – Kathleen M. Morrow, et al., Microbiome

Preprint: The impact of primary colonizers on the community composition of river biofilm – Roshan Angoshtari, et al.

Soil microbiome

Long-term nitrogen deposition enhances microbial capacities in soil carbon stabilization but reduces network complexity – Xingyu Ma, et al., Microbiome

Animal microbiome

Host-microbiota interaction-mediated resistance to inflammatory bowel disease in pigs – Xuan Zhao, et al., Microbiome

Preprint: The differing roles of flavins and quinones in extracellular electron transfer in Lactiplantibacillus plantarum – Joe Gregory Tolar, et al.

Bacteria Hysteria

Preprint: Interspecies Killing Activity of Pseudomonas syringae Tailocins – Savannah L Weaver, et al.

Preprint: Enhanced production of natural shiga toxin by overexpressing A subunit of Stx2e in Stx2e-producing Escherichia coli isolated in South Korea – Jin Hur, et al.

Preprint: Geobacter sulfurreducens′ unique metabolism results in cells with a high iron and lipid content – Ethan T Howley, et al.

Preprint: Cloning, heterologous expression and characterization of o-phthalyl-CoA decarboxylase from phthalate degrading denitrifying bacterium – Madan Junghare

Preprint: Acinetobacter baumannii defends against oxidative stress through a Mn2+-dependent small RNA-mediated suppression of type VI secretion system – Somok Bhowmik, et al.

Techniques

Preprint: Programmable acetylation modification of bacterial proteins by a Cas12a-guided acetyltransferase – Liu yanqiang, et al.

Fun

Preprint: If this title is funny, will you cite me? Citation impacts of humour and other features of article titles in ecology and evolution – Stephen B Heard, et al.

July 30, 2022

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Have a nice weekend! Today, the Digest contains several reviews.

Highlights!

Microbiota responses to different prebiotics are conserved within individuals and associated with habitual fiber intake – Zachary C Holmes – Microbiome → A three-way crossover study showed that prebiotic personalization regimens can be beneficial in different manners to different people; this study showed that people with low fiber intake received more effect from those interventions.

Human and General Microbiome

Differential Gut Microbiota Compositions Related With the Severity of Major Depressive Disorder – Qi Zhong – Frontiers in Cellular and Infection Microbiology

Phospholipid metabolites of the gut microbiota promote hypoxia-induced intestinal injury via CD1d-dependent γδ T cells – Yuyu Li – Gut Microbes

Gut bacteria interact directly with colonic mast cells in a humanized mouse model of IBS – Chiko Shimbori – Gut Microbes

Asthma and Wheeze Severity and the Oropharyngeal Microbiota in Children and Adolescents – Jonathan Thorsen – Annals of the American Thoracic Society

Minireview: Role of microbial secreted proteins in gut microbiota-host interactions – Boris Vidal-Veuthey – Frontiers in Cellular and Infection Microbiology 

Review: A Bibliometric Analysis of Research on the Links Between Gut Microbiota and Atherosclerosis – Ya Wang – Frontiers in Cardiovascular Medicine

Review: Microbiota-derived metabolites as drivers of gut-brain communication – Hany Ahmed – Gut Microbes

Review: Female reproductive dysfunctions and the gut microbiota – Sangappa B Chadchan – Journal of Molecular Endocrinology

Systematic Review: A Bibliometric Review on Gut Microbiome and Alzheimer’s Disease Between 2012 and 2021 – Alejandro I Trejo-Castro – Frontiers in Aging Neuroscience

Systematic Review: Disturbances of Vaginal Microbiome Composition in Human Papillomavirus Infection and Cervical Carcinogenesis: A Qualitative Systematic Review – Ming Wu – Frontiers in Oncology

Beneficial Microbes and Compounds

Review: Bacterial-fungal metabolic interactions within the microbiota and their potential relevance in human health and disease: a short review – Alexia Lapiere – Gut Microbes

Animal Model Microbiome

Intestinal Inflammation Reversibly Alters the Microbiota to Drive Susceptibility to Clostridioides difficile Colonization in a Mouse Model of Colitis – Madeline R Barron – mBio

Non-Model Animal Microbiome

Comparative and functional analyses of fecal microbiome in Asian elephants – Guiding Li – Antonie van Leeuwenhoek

Bioinformatics and Microbiome Analysis Techniques

Tourmaline: A containerized workflow for rapid and iterable amplicon sequence analysis using QIIME 2 and Snakemake – Luke R Thompson – GigaScience

July 28, 2022

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Today’s digest includes research on the gut microbiome of infants, ruminants, and sand flies! There is also a preprint about sewage microbiomes as well as a research article about photosynthetic bacterial communities in crop fields.

Happy reading!

Human skin microbiome

Lichen Planopilaris: The first biopsy layer microbiota inspection – Pinto et al. – PLOS One

Human gut microbiome

Adaptation of the infant gut microbiome during the complementary feeding transition – McKeen et al. – PLOS One

Animal microbiome

Metagenomic insights into the microbe-mediated B and K2 vitamin biosynthesis in the gastrointestinal microbiome of ruminants – Jiang et al. – Microbiome

Comparative analysis of the gut microbiota of sand fly vectors of zoonotic visceral leishmaniasis (ZVL) in Iran; host-environment interplay shapes diversity – Karimian et al. – PLOS Neglected Tropical Diseases

Plant, root, and soil microbiome

Metagenomic analysis of the dynamical conversion of photosynthetic bacterial communities in different crop fields over different growth periods – Cheng et al. – PLOS One

Built environment

Preprint: A metagenomic investigation of spatial and temporal changes in sewage microbiomes across a university campus – Fierer et al. – bioRxiv

July 26, 2022

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Highlights!

Microbial determinants of effective donors in faecal microbiota transplantation for UC – Craig Haifer – Gut → Metagenomic and metabolomic data analysis showed that donor microbiota stability and increased species evenness were identified novel markers associated with donor sample therapeutic efficacy in Ulcerative Colitis.

A gut microbial peptide and molecular mimicry in the pathogenesis of type 1 diabetes – Khyati Girdhar – PNAS → A peptide sequence from Parabacteroides distasonis mimics an important insulin epitope, making it susceptible to generating type I diabetes in a mouse model. 

Human and General Microbiome

Gut microbiome changes in anti-N-methyl-D-aspartate receptor encephalitis patients – Jingya Wei – BMC Neurology

Effect of a bacteriocin-producing Streptococcus salivarius on the pathogen Fusobacterium nucleatum in a model of the human distal colon – Garreth W Lawrence – Gut Microbes

Identification of Gut Microbiome Metabolites via Network Pharmacology Analysis in Treating Alcoholic Liver Disease – Ki-Kwang Oh – Current Issues in Molecular Biology

Review: The Gut Microbiota: A Double Edge Sword in Endometriosis – Chandni Talwar – Biology of Reproduction

Non-Model Animal Microbiome

Hair Microbiome Diversity within and across Primate Species – Catherine Kitrinos – mSystems

Seasonal variations in the composition and diversity of gut microbiota in white-lipped deer (Cervus albirostris) – Zhangqiang You – PeerJ

Plant Microbiome

Effects of Domestication on Plant-Microbiome Interactions – Andres Gutierrez – Plant & Cell Physiology

Evaluation of protein extraction methods for metaproteomic analyses of root-associated microbes – Fernanda Salvato – Molecular Plant-Microbe Interactions

Environmental Microbiome

Absence of stress-promoted facilitation coupled with a competition decrease in the microbiome of ephemeral saline lakes – Mateu Menéndez-Serra – Ecology

Insights into the Antimicrobial Activities and Metabolomes of Aquimarina (Flavobacteriaceae, Bacteroidetes) Species from the Rare Marine Biosphere – Sandra Godinho Silva – Marine Drugs

More microbes

Correspondence: International travel, the gut microbiome, and ESBL-E coli carriage – Ye Peng – The Lancet. Microbe

An Engineered λ Phage Enables Enhanced and Strain-Specific Killing of Enterohemorrhagic Escherichia coli – Menglu Jin – Microbiology Spectrum

Bioinformatics and Microbiome Analysis Techniques

MOCHI, a comprehensive cross-platform tool for amplicon-based microbiota analysis – Jun-Jie Zheng – Bioinformatics