scholarly journals Gut microbiota structure differs between honey bees in winter and summer

2019 ◽  
Author(s):  
Lucie Kešnerová ◽  
Olivier Emery ◽  
Michaël Troilo ◽  
Joanito Liberti ◽  
Berra Erkosar ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Community Composition ◽  
Honey Bees ◽  
Low Complexity ◽  
Α Diversity ◽  
Bee Health ◽  
Health And Disease ◽  
Colony Survival ◽  
Future Work

AbstractAdult honey bees harbor a specialized gut microbiota of relatively low complexity. While seasonal differences in community composition have been reported, previous studies have focused on compositional changes rather than differences in absolute bacterial loads. Moreover, little is known about the gut microbiota of winter bees, which live much longer than bees during the foraging season, and which are critical for colony survival. We quantified seven core members of the bee gut microbiota in a single colony over two years and characterized the community composition in 14 colonies during summer and winter. Our data shows that total bacterial loads substantially differ between foragers, nurses, and winter bees. Long-lived winter bees had the highest bacterial loads and the lowest community α-diversity, with a characteristic shift towards high levels of Bartonella and Commensalibacter, and a reduction of opportunistic colonizers. Using gnotobiotic bee experiments, we show that diet is a major contributor to the observed differences in bacterial loads. Overall, our study reveals that the gut microbiota of winter bees is remarkably different from foragers and nurses. Considering the importance of winter bees for colony survival, future work should focus on the role of the gut microbiota in winter bee health and disease.

scholarly journals Gut microbiota structure differs between honeybees in winter and summer

2019 ◽  
Vol 14 (3) ◽  
pp. 801-814 ◽  
Author(s):  
Lucie Kešnerová ◽  
Olivier Emery ◽  
Michaël Troilo ◽  
Joanito Liberti ◽  
Berra Erkosar ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Community Composition ◽  
Low Complexity ◽  
Α Diversity ◽  
Bee Health ◽  
Health And Disease ◽  
Compositional Changes ◽  
Colony Survival ◽  
Future Work

AbstractAdult honeybees harbor a specialized gut microbiota of relatively low complexity. While seasonal differences in community composition have been reported, previous studies have focused on compositional changes rather than differences in absolute bacterial loads. Moreover, little is known about the gut microbiota of winter bees, which live much longer than bees during the foraging season, and which are critical for colony survival. We quantified seven core members of the bee gut microbiota in a single colony over 2 years and characterized the community composition in 14 colonies during summer and winter. Our data show that total bacterial loads substantially differ between foragers, nurses, and winter bees. Long-lived winter bees had the highest bacterial loads and the lowest community α-diversity, with a characteristic shift toward high levels of Bartonella and Commensalibacter, and a reduction of opportunistic colonizers. Using gnotobiotic bee experiments, we show that diet is a major contributor to the observed differences in bacterial loads. Overall, our study reveals that the gut microbiota of winter bees is remarkably different from foragers and nurses. Considering the importance of winter bees for colony survival, future work should focus on the role of the gut microbiota in winter bee health and disease.

scholarly journals The Gut Microbiota Can Provide Viral Tolerance in the Honey Bee

2021 ◽  
Vol 9 (4) ◽  
pp. 871
Author(s):  
Christopher Dosch ◽  
Anja Manigk ◽  
Tabea Streicher ◽  
Anja Tehel ◽  
Robert J. Paxton ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Honey Bee ◽  
Honey Bees ◽  
Negative Effects ◽  
Positive Role ◽  
Viral Pathogen ◽  
Deformed Wing Virus ◽  
Bee Health ◽  
Honey Bee Health

Adult honey bees host a remarkably consistent gut microbial community that is thought to benefit host health and provide protection against parasites and pathogens. Currently, however, we lack experimental evidence for the causal role of the gut microbiota in protecting the Western honey bees (Apis mellifera) against their viral pathogens. Here we set out to fill this knowledge gap by investigating how the gut microbiota modulates the virulence of a major honey bee viral pathogen, deformed wing virus (DWV). We found that, upon oral virus exposure, honey bee survival was significantly increased in bees with an experimentally established normal gut microbiota compared to control bees with a perturbed (dysbiotic) gut microbiota. Interestingly, viral titers were similar in bees with normal gut microbiota and dysbiotic bees, pointing to higher viral tolerance in bees with normal gut microbiota. Taken together, our results provide evidence for a positive role of the gut microbiota for honey bee fitness upon viral infection. We hypothesize that environmental stressors altering honey bee gut microbiota composition, e.g., antibiotics in beekeeping or pesticides in modern agriculture, could interact synergistically with pathogens, leading to negative effects on honey bee health and the epidemiology and impact of their viruses.

scholarly journals Role of Biological Sex in the Cardiovascular-Gut Microbiome Axis

2022 ◽  
Vol 8 ◽  
Author(s):  
Shuangyue Li ◽  
Georgios Kararigas
Keyword(s):  
Gut Microbiota ◽  
Gut Microbiome ◽  
Microbial Composition ◽  
Biological Sex ◽  
Technological Advances ◽  
Host Health ◽  
Health And Disease ◽  
And Function ◽  
Insight Into

There has been a recent, unprecedented interest in the role of gut microbiota in host health and disease. Technological advances have dramatically expanded our knowledge of the gut microbiome. Increasing evidence has indicated a strong link between gut microbiota and the development of cardiovascular diseases (CVD). In the present article, we discuss the contribution of gut microbiota in the development and progression of CVD. We further discuss how the gut microbiome may differ between the sexes and how it may be influenced by sex hormones. We put forward that regulation of microbial composition and function by sex might lead to sex-biased disease susceptibility, thereby offering a mechanistic insight into sex differences in CVD. A better understanding of this could identify novel targets, ultimately contributing to the development of innovative preventive, diagnostic and therapeutic strategies for men and women.

scholarly journals The Role of the Gut Microbiome in Colorectal Cancer

2018 ◽  
Vol 31 (03) ◽  
pp. 192-198 ◽  
Author(s):  
Grace Chen
Keyword(s):  
Colorectal Cancer ◽  
Colon Cancer ◽  
Microbial Community ◽  
Gut Microbiota ◽  
Gut Microbiome ◽  
Intestinal Health ◽  
Genotoxic Effects ◽  
Bacterial Populations ◽  
Health And Disease

AbstractThere is increasing evidence that the gut microbiome, which consists of trillions of microbes representing over 1,000 species of bacteria with over 3 million genes, significantly impacts intestinal health and disease. The gut microbiota not only is capable of promoting intestinal homeostasis and antitumor responses but can also contribute to chronic dysregulated inflammation as well as have genotoxic effects that lead to carcinogenesis. Whether the gut microbiota maintains health or promotes colon cancer may ultimately depend on the composition of the gut microbiome and the balance within the microbial community of protective and detrimental bacterial populations. Disturbances in the normal balanced state of a healthful microbiome, known as dysbiosis, have been observed in patients with colorectal cancer (CRC); however, whether these alterations precede and cause CRC remains to be determined. Nonetheless, studies in mice strongly suggest that the gut microbiota can modulate susceptibility to CRC, and therefore may serve as both biomarkers and therapeutic targets.

scholarly journals Exploring the Modulatory Effects of Gut Microbiota in Anti-Cancer Therapy

2021 ◽  
Vol 11 ◽  
Author(s):  
Wenyu Li ◽  
Xiaorong Deng ◽  
Tingtao Chen
Keyword(s):  
Cancer Therapy ◽  
Gut Microbiota ◽  
Human Body ◽  
Recent Decade ◽  
Normal Microbiota ◽  
Surgery Research ◽  
Research Findings ◽  
Health And Disease ◽  
The One

In the recent decade, gut microbiota has received growing interest due to its role in human health and disease. On the one hand, by utilizing the signaling pathways of the host and interacting with the immune system, the gut microbiota is able to maintain the homeostasis in human body. This important role is mainly modulated by the composition of microbiota, as a normal microbiota composition is responsible for maintaining the homeostasis of human body, while an altered microbiota profile could contribute to several pathogenic conditions and may further lead to oncogenesis and tumor progression. Moreover, recent insights have especially focused on the important role of gut microbiota in current anticancer therapies, including chemotherapy, radiotherapy, immunotherapy and surgery. Research findings have indicated a bidirectional interplay between gut microbiota and these therapeutic methods, in which the implementation of different therapeutic methods could lead to different alterations in gut microbiota, and the presence of gut microbiota could in turn contribute to different therapeutic responses. As a result, manipulating the gut microbiota to reduce the therapy-induced toxicity may provide an adjuvant therapy to achieve a better therapeutic outcome. Given the complex role of gut microbiota in cancer treatment, this review summarizes the interactions between gut microbiota and anticancer therapies, and demonstrates the current strategies for reshaping gut microbiota community, aiming to provide possibilities for finding an alternative approach to lower the damage and improve the efficacy of cancer therapy.

scholarly journals B7 Family Molecule VSIG4 Regulates Intestinal Anti-Enterohemorrhagic Escherichia coli Immunity by Altering Gut Flora Diversity

2021 ◽  
Vol 9 (8) ◽  
pp. 1769
Author(s):  
Zhili He ◽  
Jiajia Li ◽  
Saisai Gong ◽  
Li Xing ◽  
Yakun Sun ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Gut Microbiota ◽  
Community Composition ◽  
Average Length ◽  
Enterohemorrhagic Escherichia Coli ◽  
Rrna Gene ◽  
B7 Family ◽  
Immunoglobulin Domain ◽  
Flora Diversity

As an essential member of the B7 family, V-set and immunoglobulin domain-containing 4 (VSIG4) is expressed explicitly in tissue-resident macrophages (TRMs) and plays an essential role in maintaining the homeostasis of the environmental immune system. Here, we demonstrate that gene-targeted VSIG4-deficient mice infected with Enterohemorrhagic Escherichia coli (EHEC) display reduced bacterial burden. To reveal the role of VSIG4 in the fight against EHEC infection, we collected mice feces and used high-throughput 16S rRNA gene amplicons to detect changes in the flora. A total of 657330 sequences were sequenced on the PacBio platform, with an average length of 1498 bp. We found that VSIG4 deficiency could alter the gut microbiota by increasing diversity and shifting community composition. In particular, G_Akkermansia and G_Oscillo spiraceae increased significantly. These findings expand upon a prior observation that VSIG4 deficiency reduced EHEC colonization by changing the gut microbiota diversity and shifting community composition.

Pivotal Role Of The Interaction Between Herbal Medicines And Gut Microbiota On Disease Treatment

2020 ◽  
Vol 21 ◽  
Author(s):  
Tingting Zhao ◽  
Zhe Wang ◽  
Zhilong Liu ◽  
Youhua Xu
Keyword(s):  
Cardiovascular Diseases ◽  
Gut Microbiota ◽  
Neurodegenerative Diseases ◽  
Disease Progression ◽  
Herbal Medicines ◽  
Underlying Mechanism ◽  
Disease Treatment ◽  
Endocrine Diseases ◽  
Health And Disease

: With the recognition of the important role of gut microbiota in both health and disease progression, attempts to modulate its composition as well as its co-metabolism with the organism have attracted special attention. Abundant studies have demonstrated that dysfunction or imbalance of gut microbiota is closely with disease including endocrine diseases, neurodegenerative diseases, tumors, cardiovascular diseases, et al. Herbal medicines have been applied for preventing and treating disease worldwide for hundreds of years. Although the underlying mechanism seems to be complex, one of the important one is through modulating gut microbiota. In this review, co-metabolism between herbal medicines and microbiota, as well as the potential pathways are summarized from most recent published papers.

scholarly journals Microbiota in Pancreatic Diseases: A Review of the Literature

2021 ◽  
Vol 10 (24) ◽  
pp. 5920
Author(s):  
Tommaso Schepis ◽  
Sara S. De Lucia ◽  
Enrico C. Nista ◽  
Vittoria Manilla ◽  
Giulia Pignataro ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Small Molecules ◽  
Bacterial Colonization ◽  
Bacterial Flora ◽  
Critical Element ◽  
High Morbidity ◽  
Pancreatic Diseases ◽  
Therapeutic Implications ◽  
Health And Disease

The gut microbiota is a critical element in the balance between human health and disease. Its impairment, defined as dysbiosis, is associated with gastroenterological and systemic diseases. Pancreatic secretions are involved in the composition and changes of the gut microbiota, and the gut microbiota may colonize the pancreatic parenchyma and be associated with the occurrence of diseases. The gut microbiota and the pancreas influence each other, resulting in a “gut microbiota-pancreas axis”. Moreover, the gut microbiota may be involved in pancreatic diseases, both through direct bacterial colonization and an indirect effect of small molecules and toxins derived from dysbiosis. Pancreatic diseases such as acute pancreatitis, chronic pancreatitis, autoimmune pancreatitis, and pancreatic cancer are common gastroenterological diseases associated with high morbidity and mortality. The involvement of the microbiota in pancreatic diseases is increasingly recognized. Therefore, modifying the intestinal bacterial flora could have important therapeutic implications on these pathologies. The aim of this study is to review the literature to evaluate the alterations of the gut microbiota in pancreatic diseases, and the role of the microbiota in the treatment of these diseases.

scholarly journals The gut microbial metabolome: modulation of cancer risk in obese individuals

2012 ◽  
Vol 72 (1) ◽  
pp. 178-188 ◽  
Author(s):  
Wendy R. Russell ◽  
Sylvia H. Duncan ◽  
Harry J. Flint
Keyword(s):  
Gut Microbiota ◽  
Genetic Factors ◽  
Microbial Metabolism ◽  
Health Concern ◽  
Human Gut ◽  
Alcoholic Fatty Liver ◽  
Health And Disease ◽  
Diet And Lifestyle ◽  
Alcoholic Fatty Liver Disease

Obesity is a critical health concern and although genetic factors may predispose an individual to become obese, changes in diet and lifestyle over the last few decades are likely to be significant contributors. Even so, it has been suggested that the causes of the current obesity crisis are not simply explained by changes in eating and exercise habits. Evidence suggests that the gut microbiota may play an important role in obesity and may be a factor in the development of associated disease including diabetes, CVD, non-alcoholic fatty liver disease and cancer. There have been tremendous advances in knowledge regarding the composition of human gut microbiota, but less is known about their function and role within the human host. It is becoming widely accepted that the products of microbial metabolism influence human health and disease, particularly with respect to immune response and inflammation. However, in most cases, the products of microbial metabolism are uncharacterised and their mechanism of action remains unknown. This review addresses the role of the metabolites produced by gut microbiota in cancer and obesity. It is clear that only if the link between microbial diversity and metabolic functionality is firmly established, will the mechanism by which gut microbiota maintains health or contributes to disease development be elucidated.

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