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One or more keywords matched the following properties of Alverdy, John
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overview John Alverdy, MD, has run a continuously funded NIH-funded laboratory that studies the molecular interactions of bacteria and the intestinal mucosa in order to understand how life-threatening infections arise after trauma and major surgery and during critical illness. He has developed several anti-infective polymer-based compounds that can attenuate the virulence of several multi-drug resistant pathogens that cause life threatening infections in surgical patients and works with the IME to synthesize, refine, and scale the compounds for pre-clinical testing. The Alverdy lab seeks to better understand the regulation of virulence expression among potential pathogens through investigating the characteristics of the microbial context, molecular machinery that senses that context, and ultimately the lethal combinations of virulence expression that leads to disease. The majority of our work has focused on the sense and response virulence mechanisms of Pseudomonas aeruginosa, a well characterized and clinically important pathogen. We have shown a remarkable potential for this organisms to respond to host environmental cues related to stress, ischemia, immune activation and nutrient depletion. With this core model of environmental regulation of virulence expression, we are pursuing applications in intestinal transplantation, anastomotic and radiation physiology, necrotizing enterocolitis and ischemia/reperfusion injury. We are also investigating similar sense and response mechanisms in other clinically important organisms, including Staphylococcus aureus and Candida albicans. Finally, we are interested in developing virulence-based therapies to prevent virulence activation through modifications in microenvironment of the stressed host such as phosphate repletion and polymer-mediated mucosal replacement therapies. The ultimate goal of understanding microbial virulence is to provide clinical tools to improve the care of patients. However the complexity of the host-pathogen interaction and the vast amounts of mechanistic information available constitutes a formidable barrier to translational research. Computational agent based modeling is a well suited to dynamically represent mechanistic detail in a modifiable context to recapitulate cellular behavior at the tissue, organ and patient levels.
One or more keywords matched the following items that are connected to Alverdy, John
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Concept Critical Illness
Academic Article Influence of the critically ill state on host-pathogen interactions within the intestine: gut-derived sepsis redefined.
Academic Article The impact of stress and nutrition on bacterial-host interactions at the intestinal epithelial surface.
Academic Article Pseudomonas aeruginosa expresses a lethal virulence determinant, the PA-I lectin/adhesin, in the intestinal tract of a stressed host: the role of epithelia cell contact and molecules of the Quorum Sensing Signaling System.
Academic Article Contributions of intestinal bacteria to nutrition and metabolism in the critically ill.
Academic Article Candida albicans isolates from the gut of critically ill patients respond to phosphate limitation by expressing filaments and a lethal phenotype.
Academic Article The effect of nutrition on gastrointestinal barrier function.
Academic Article Causes and consequences of bacterial adherence to mucosal epithelia during critical illness.
Academic Article The re-emerging role of the intestinal microflora in critical illness and inflammation: why the gut hypothesis of sepsis syndrome will not go away.
Academic Article The key role of Pseudomonas aeruginosa PA-I lectin on experimental gut-derived sepsis.
Academic Article The importance of the mucosal immune system.
Academic Article Part III. Obesity.
Academic Article Membership and behavior of ultra-low-diversity pathogen communities present in the gut of humans during prolonged critical illness.
Academic Article During critical illness the gut does not pass the acid test.
Academic Article Influence of nutrition therapy on the intestinal microbiome.
Academic Article Case presentation and panel discussion: Critical illness.
Academic Article Re-examining chemically defined liquid diets through the lens of the microbiome.
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  • Critical Illness