Bronchopulmonary dysplasia(BPD),also known as neonatal chronic lung disease,is a common respiratory disease in preterm infants.Preterm infants with BPD often exhibit changes in gut and lung microbiota.In recent years,...Bronchopulmonary dysplasia(BPD),also known as neonatal chronic lung disease,is a common respiratory disease in preterm infants.Preterm infants with BPD often exhibit changes in gut and lung microbiota.In recent years,with the development of high-throughput sequencing technology,more and more mechanisms of the gut-lung axis have been confirmed,helping to explore new directions for the treatment of BPD using microecological agents.This paper reviews the roles of gut microbiota,lung microbiota,and the gut-lung axis in the pathogenesis of BPD in preterm infants,providing new research avenues for the prevention and treatment of BPD.展开更多
Pulmonary abnormalities,dysfunction or hyper-reactivity occurs in association with inflammatory bowel disease(IBD) more frequently than previously recognized.Emerging evidence suggests that subtle inflammation exists ...Pulmonary abnormalities,dysfunction or hyper-reactivity occurs in association with inflammatory bowel disease(IBD) more frequently than previously recognized.Emerging evidence suggests that subtle inflammation exists in the airways among IBD patients even in the absence of any bronchopulmonary symptoms,and with normal pulmonary functions. The pulmonary impairment is more pronounced in IBD patients with active disease than in those in remission. A growing number of case reports show that the IBD patients develop rapidly progressive respiratory symptoms after colectomy,with failure to isolate bacterial pathogens on repeated sputum culture,and often request oral corticosteroid therapy. All the above evidence indicates that the inflammatory changes in both the intestine and lung during IBD. Clinical or subclinical pulmonary inflammation accompanies the main inflammation of the bowel.Although there are clinical and epidemiological reports of chronic inflammation of the pulmonary and intestinal mucosa in IBD,the detailed mechanisms of pulmonaryintestinal crosstalk remain unknown. The lung has no anatomical connection with the main inflammatory site of the bowel. Why does the inflammatory process shift from the gastrointestinal tract to the airways? The clinical and subclinical pulmonary abnormalities,dysfunction,or hyper-reactivity among IBD patients need further evaluation. Here,we give an overview of the concordance between chronic inflammatory reactions in the airways and the gastrointestinal tract. A better understanding of the possible mechanism of the crosstalk among the distant organs will be beneficial in identifying therapeutic strategies for mucosal inflammatory diseases such as IBD and allergy.展开更多
Respiratory symptoms are most commonly experienced by patients in the early stages of novel coronavirus disease 2019 (COVID-19). However, with a better understanding of COVID-19, gastrointestinal symptoms such as diar...Respiratory symptoms are most commonly experienced by patients in the early stages of novel coronavirus disease 2019 (COVID-19). However, with a better understanding of COVID-19, gastrointestinal symptoms such as diarrhea, nausea, and vomiting haveattracted increasing attention. The gastrointestinal tract may be a target organ of severe acute respiratory syndrome coronavirus2 (SARS-CoV-2) infection. The intestinal microecological balance is a crucial factor for homeostasis, including immunity andinflammation, which are closely related to COVID-19. Herbal medicine can restore intestinal function and regulate the gut florastructure. Herbal medicine has a long history of treating lung diseases from the perspective of the intestine, which is called thegut-lung axis. The physiological activities of guts and lungs influence each other through intestinal flora, microflora metabolites,and mucosal immunity. Microecological modulators are included in the diagnosis and treatment protocols for COVID-19. Inthis review, we demonstrate the relationship between COVID-19 and the gut, gut-lung axis, and the role of herbal medicine intreating respiratory diseases originating from the intestinal tract. It is expected that the significance of herbal medicine in treatingrespiratory diseases from the perspective of the intestinal tract could lead to new ideas and methods for treatment.展开更多
Although different studies have associated coronavirus disease 2019(COVID-19)with the occurrence of liver injury,the hepatic injury route during the COVID-19 course is not yet fully understood.In order to better under...Although different studies have associated coronavirus disease 2019(COVID-19)with the occurrence of liver injury,the hepatic injury route during the COVID-19 course is not yet fully understood.In order to better understand the mechanisms of the disease,the human gut microbiota has been the subject of extensive discussion in the context of COVID-19 pathophysiology.However,many questions remain,including the risks of liver injury due to COVID-19 specific populations.Further research in this field could allow the discovery of new personalized treatment strategies aimed at improving the microbiota composition,thereby reducing COVID-19 severity and its complications in different populations.In this article,we discussed basic mechanisms of severe acute respiratory syndrome coronavirus 2 infection and recent evidence on the relationship between COVID-19,the gut microbiome and liver injury as well as proposed recommendations for further research.展开更多
The intestinal lumen harbors a diverse consortium of microorganisms that participate in reciprocal crosstalk with intestinal immune cells and with epithelial and endothelial cells,forming a multi-layered barrier that ...The intestinal lumen harbors a diverse consortium of microorganisms that participate in reciprocal crosstalk with intestinal immune cells and with epithelial and endothelial cells,forming a multi-layered barrier that enables the efficient absorption of nutrients without an excessive influx of pathogens.Despite being a lung-centered disease,severe coronavirus disease 2019(COVID-19)affects multiple systems,including the gastrointestinal tract and the pertinent gut barrier function.Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)can inflict either direct cytopathic injury to intestinal epithelial and endothelial cells or indirect immune-mediated damage.Alternatively,SARS-CoV-2 undermines the structural integrity of the barrier by modifying the expression of tight junction proteins.In addition,SARS-CoV-2 induces profound alterations to the intestinal microflora at phylogenetic and metabolomic levels(dysbiosis)that are accompanied by disruption of local immune responses.The ensuing dysregu-lation of the gut-lung axis impairs the ability of the respiratory immune system to elicit robust and timely responses to restrict viral infection.The intestinal vasculature is vulnerable to SARS-CoV-2-induced endothelial injury,which simultaneously triggers the activation of the innate immune and coagulation systems,a condition referred to as“immunothrombosis”that drives severe thrombotic complications.Finally,increased intestinal permeability allows an aberrant dissemination of bacteria,fungi,and endotoxin into the systemic circulation and contributes,to a certain degree,to the over-exuberant immune responses and hyper-inflammation that dictate the severe form of COVID-19.In this review,we aim to elucidate SARS-CoV-2-mediated effects on gut barrier homeostasis and their implications on the progression of the disease.展开更多
文摘Bronchopulmonary dysplasia(BPD),also known as neonatal chronic lung disease,is a common respiratory disease in preterm infants.Preterm infants with BPD often exhibit changes in gut and lung microbiota.In recent years,with the development of high-throughput sequencing technology,more and more mechanisms of the gut-lung axis have been confirmed,helping to explore new directions for the treatment of BPD using microecological agents.This paper reviews the roles of gut microbiota,lung microbiota,and the gut-lung axis in the pathogenesis of BPD in preterm infants,providing new research avenues for the prevention and treatment of BPD.
文摘Pulmonary abnormalities,dysfunction or hyper-reactivity occurs in association with inflammatory bowel disease(IBD) more frequently than previously recognized.Emerging evidence suggests that subtle inflammation exists in the airways among IBD patients even in the absence of any bronchopulmonary symptoms,and with normal pulmonary functions. The pulmonary impairment is more pronounced in IBD patients with active disease than in those in remission. A growing number of case reports show that the IBD patients develop rapidly progressive respiratory symptoms after colectomy,with failure to isolate bacterial pathogens on repeated sputum culture,and often request oral corticosteroid therapy. All the above evidence indicates that the inflammatory changes in both the intestine and lung during IBD. Clinical or subclinical pulmonary inflammation accompanies the main inflammation of the bowel.Although there are clinical and epidemiological reports of chronic inflammation of the pulmonary and intestinal mucosa in IBD,the detailed mechanisms of pulmonaryintestinal crosstalk remain unknown. The lung has no anatomical connection with the main inflammatory site of the bowel. Why does the inflammatory process shift from the gastrointestinal tract to the airways? The clinical and subclinical pulmonary abnormalities,dysfunction,or hyper-reactivity among IBD patients need further evaluation. Here,we give an overview of the concordance between chronic inflammatory reactions in the airways and the gastrointestinal tract. A better understanding of the possible mechanism of the crosstalk among the distant organs will be beneficial in identifying therapeutic strategies for mucosal inflammatory diseases such as IBD and allergy.
基金This work was supported by the Tianjin Science and Technology Program(22ZXGBSY00020).
文摘Respiratory symptoms are most commonly experienced by patients in the early stages of novel coronavirus disease 2019 (COVID-19). However, with a better understanding of COVID-19, gastrointestinal symptoms such as diarrhea, nausea, and vomiting haveattracted increasing attention. The gastrointestinal tract may be a target organ of severe acute respiratory syndrome coronavirus2 (SARS-CoV-2) infection. The intestinal microecological balance is a crucial factor for homeostasis, including immunity andinflammation, which are closely related to COVID-19. Herbal medicine can restore intestinal function and regulate the gut florastructure. Herbal medicine has a long history of treating lung diseases from the perspective of the intestine, which is called thegut-lung axis. The physiological activities of guts and lungs influence each other through intestinal flora, microflora metabolites,and mucosal immunity. Microecological modulators are included in the diagnosis and treatment protocols for COVID-19. Inthis review, we demonstrate the relationship between COVID-19 and the gut, gut-lung axis, and the role of herbal medicine intreating respiratory diseases originating from the intestinal tract. It is expected that the significance of herbal medicine in treatingrespiratory diseases from the perspective of the intestinal tract could lead to new ideas and methods for treatment.
基金the Italian Ministry of Health-Ricerca Corrente 2022Saveetha Institute of Medical and Technical Sciences for supporting this study
文摘Although different studies have associated coronavirus disease 2019(COVID-19)with the occurrence of liver injury,the hepatic injury route during the COVID-19 course is not yet fully understood.In order to better understand the mechanisms of the disease,the human gut microbiota has been the subject of extensive discussion in the context of COVID-19 pathophysiology.However,many questions remain,including the risks of liver injury due to COVID-19 specific populations.Further research in this field could allow the discovery of new personalized treatment strategies aimed at improving the microbiota composition,thereby reducing COVID-19 severity and its complications in different populations.In this article,we discussed basic mechanisms of severe acute respiratory syndrome coronavirus 2 infection and recent evidence on the relationship between COVID-19,the gut microbiome and liver injury as well as proposed recommendations for further research.
文摘The intestinal lumen harbors a diverse consortium of microorganisms that participate in reciprocal crosstalk with intestinal immune cells and with epithelial and endothelial cells,forming a multi-layered barrier that enables the efficient absorption of nutrients without an excessive influx of pathogens.Despite being a lung-centered disease,severe coronavirus disease 2019(COVID-19)affects multiple systems,including the gastrointestinal tract and the pertinent gut barrier function.Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)can inflict either direct cytopathic injury to intestinal epithelial and endothelial cells or indirect immune-mediated damage.Alternatively,SARS-CoV-2 undermines the structural integrity of the barrier by modifying the expression of tight junction proteins.In addition,SARS-CoV-2 induces profound alterations to the intestinal microflora at phylogenetic and metabolomic levels(dysbiosis)that are accompanied by disruption of local immune responses.The ensuing dysregu-lation of the gut-lung axis impairs the ability of the respiratory immune system to elicit robust and timely responses to restrict viral infection.The intestinal vasculature is vulnerable to SARS-CoV-2-induced endothelial injury,which simultaneously triggers the activation of the innate immune and coagulation systems,a condition referred to as“immunothrombosis”that drives severe thrombotic complications.Finally,increased intestinal permeability allows an aberrant dissemination of bacteria,fungi,and endotoxin into the systemic circulation and contributes,to a certain degree,to the over-exuberant immune responses and hyper-inflammation that dictate the severe form of COVID-19.In this review,we aim to elucidate SARS-CoV-2-mediated effects on gut barrier homeostasis and their implications on the progression of the disease.
