Meet The Microbiologist - The Scientists Behind The Microbiology

From Bovine Spongiform Encephalopathy (BSE) to Creutzfeldt-Jakob disease (CJD), Neil Mabbott, Ph.D., has worked for nearly 2 decades on understanding the mechanisms by which prion proteins become infectious and cause neurological disease in humans and animals. He discusses the remarkable properties of prions and addresses complexities surrounding symptoms, transmission and diagnosis of prion disease.

Episode Summary Timothy Donohue, Ph.D.—ASM Past President, University of Wisconsin Foundation Fetzer Professor of Bacteriologyand Director of the Great Lakes Bioenergy Research Center (GLBRC) calls genomics a game-changer when it comes the potential of microbes to create renewable resources and products that can sustain the environment, economy and supply chain around the world. He also shares some exciting new advances in the field and discusses ways his research team is using microorganisms as nanofactories to degrade lignocellulose and make a smorgasbord of products with high economic value. Take the MTM listener survey! Ashley's Biggest Takeaways: The bioeconomy can be broadly defined as the use of renewable resources, including microorganisms, to produce valuable goods, products and services. Microbes have the potential to create products that cannot be made by existing synthetic chemistry routes. Using raw, renewable resources to create a circular bioeconomy is beneficial to the environmental footprin

Rodney Rohde, Ph.D., Regents’ Professor and Chair of the Medical Laboratory Science Program at Texas State University discusses the many variants, mammalian hosts and diverse neurological symptoms of rabies virus. Take the MTM listener survey! Ashley’s Biggest Takeaways: Prior to his academic career, Rohde spent a decade as a public health microbiologist and molecular epidemiologist with the Texas Department of State Health Services Bureau of Laboratories and Zoonosis Control Division, and over 30 years researching rabies virus. While at the Department of Health Lab, Rohde worked on virus isolation using what he described as “old school” cell culture techniques, including immunoassays and hemagglutinin inhibition assays. He also identified different variants of rabies virus, using molecular biology techniques. Rohde spent time in the field shepherding oral vaccination programs that, according to passive surveillance methods have completely eliminated canine rabies in Texas. In the last 30-40 years, most rab

The scientific process has the power to deliver a better world and may be the most monumental human achievement. But when it is unethically performed or miscommunicated, it can cause confusion and division. Drs. Fang and Casadevall discuss what is good science, what is bad science and how to make it better. Get the book! Thinking about Science: Good Science, Bad Science, and How to Make It Better

Dr. James Morton discusses how the gut microbiome modulates brain development and function with specific emphasis on how the gut-brain axis points to functional architecture of autism. Watch James' talk from ASM Microbe 2023: Using AI to Glean Insights From Microbiome Data https://youtu.be/hUQls359Spo

Dr. Michael ginger, Dean of the School of Applied Sciences in the Department of Biological and geographical Science at the University of Huddersfield, in West Yorkshire, England discusses the atypical metabolism and evolutionary cell biology of parasitic and free-living protists, including Leishmania, Naegleria and  even euglinids.

Dr. Maria Eugenia Inda-Webb, Pew Postdoctoral Fellow working in the Synthetic Biology Center at MIT builds biosensors to diagnose and treat inflammatory disorders in the gut, like inflammatory bowel disease and celiac disease. She discusses how “wearables,” like diagnostic diapers and nursing pads could help monitor microbiome development to treat the diseases of tomorrow.   Subscribe (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS or by email. Ashley's Biggest Takeaways Biosensors devices that engineer living organisms or biomolocules to detect and report the presence of certain biomarkers.   The device consists of a bioreceptor (bacteria) and a reporter (fluorescent protein or light). Inda-Webb’s lab recently published a paper in Nature about using biosensors (Sub-1.4 cm3 capsule) to detect inflammatory biomarkers in the gut. The work is focused on diagnosing and treating inflammatory bowel disease, but Inda-Webb acknowledged that that is a large research umbrella. The next step for this r

Dr. Gary Procop, CEO of the American Board of pathology and professor of pathology at the Cleveland Clinic, Lerner School of Medicine discusses the importance of early detection and diagnosis in order to prevent fungal invasion leading to poor outcomes, particularly in immunocompromised patients. He emphasizes the importance of thinking fungus early, shares his passion for mentoring and talks about key updates in the recently released 7th Edition of Larone’s Medically Important Fungi. Ashley's Biggest Takeaways Many invasive fungal infections are angiotrophic, meaning they actually grow toward, and into, blood vessels. Once the fungus has penetrated the blood vessel, the blood essentially clots, causing tissue downstream from the blood clot to die (infarction). When tissues that have been excised are viewed under the microscope, hyphal elements can be seen streaming toward or invading through the wall of the blood vessels. Once the clot forms, those hyphal elements can be seen in the center of the blood vess

From antifungal resistance to disaster microbiology and tales of visible mold growing across the skin of patients following a tornado in Joplin, Missouri, Dr. Shawn Lockhart, Senior Clinical Laboratory Advisor in the Mycotic Diseases Branch at the CDC talks all things fungi—complete with references to pop TV shows and the recently released 7th Edition of Larone’s Medically Important Fungi. Links mentioned: Larone's Medically Important Fungi: A Guide to Identification, 7th Edition (Use code: MCR20 at checkout for 20% off) CDC’s Mycotic Diseases Branch conducts an annual training course on the identification of pathogenic molds.      

Dr. Kate Howell, Associate Professor of Food Chemistry at the University of Melbourne, Australia discusses how microbes impact the flavor and aroma of food and beverages and shares how microbial interactions can be used to enhance nutritional properties of food and beverage sources. Let us know what you thought about this episode by tweeting at us @ASMicrobiology or leaving a comment on facebook.com/asmfan.

Dr. Steve Diggle, ASM Distinguished Lecturer and Microbiology Professor at the Georgia Institute of Technology in Atlanta, Georgia and Dr. Freya Harrison, Associate Microbiology Professor at the University of Warwick in Coventry, U.K., discuss the science behind medieval medical treatments and the benefits of interdisciplinary research. Ashley's Biggest Takeaways Diggle and Harrison met in Oxford, where Harrison was finishing up her Ph.D. and Diggle was doing background research for his work studying evolutionary questions about quorum sensing. When Diggle began searching for a postdoc, Harrison, who had been conducting an independent fellowship at Oxford and studying social evolution, applied. The AncientBiotics Consortium is a group of experts from the sciences, arts and humanities, who are digging through medieval medical books in hopes of finding ancient solutions to today’s growing threat of antibiotic resistance. The group’s first undertaking was recreation and investigation of the antimicrobial proper

Dr. Jessica Lee, scientist for the Space Biosciences Research Branch at NASA’s AIMS Research Center in Silicon Valley uses both wet-lab experimentation and computational modeling to understand what microbes really experience when they come to space with humans. She discusses space microbiology, food safety and microbial food production in space and the impacts of microgravity and extreme radiation when sending Saccharomyces cerevisiae to the moon. Ashley's Biggest Takeaways Lee applied for her job at NASA in 2020. Prior to her current position, she completed 2 postdocs and spent time researching how microbes respond to stress at a population level and understanding diversity in microbial populations. She has a background in microbial ecology, evolution and bioinformatics. Model organisms are favored for space research because they reduce risk, maximize the science return and organisms that are well understood are more easily funded. Unsurprisingly, most space research does not actually take place in space, b

Dr. Maria Gloria Dominguez-Bello, Henry Rutgers Professor of Microbiome and Health and director of the Rutgers-based New Jersey Institute for Food, Nutrition and Health, and Dr. Martin Blaser, Professor of Medicine and Pathology and Laboratory Medicine and director of the Center for Advanced Biotechnology and Medicine at Rutgers (NJ) discuss the importance of preserving microbial diversity in the human microbiome. The pair, whose research was recently featured in a documentary The Invisible Extinction, are on a race to prevent the loss of ancestral microbes and save the bacteria that contribute to human health and well-being.  Links for the Episode: The Invisible Extinction (documentary) Missing Microbes (book) Missing Microbes: How the Overuse of Antibiotics Is Fueling Our Modern Plagues (article) (YouTube) Missing Microbes with Dr. Martin Blaser

Dr. Robert Gaynes, distinguished physician and professor of infectious diseases at Emory University, joins Meet the Microbiologist for the 3rd , and final, episode in a unique 3-part segment, in which we share stories about the life and work of medial pioneers in infectious diseases. Here we discuss the career of Dr. Barry Marshall, the Australian physician who is best known for demonstrating in a rather unorthodox way that peptic ulcers are caused by the bacterium, Helicobacter pylori. Gaynes is author of Germ Theory: Medical Pioneers in Infectious Diseases, the 2nd edition of which will publish in Spring 2023. All 3 scientists highlighted in this special MTM segment are also featured in the upcoming edition of the book.

Dr. Robert Gaynes, distinguished physician and professor of infectious diseases at Emory University, joins Meet the Microbiologist for the 2nd episode in a unique 3-part series, in which we share the impact of scientists at the heart of various paradigm shifts throughout scientific history. Here we discuss the life and career of Tony Fauci, the scientist who has been recognized as America’s Top Infectious Diseases Doctor and “voice of science” during the COVID-19 pandemic. Ashley's Biggest Takeaways Fauci was born in Brooklyn, New York. He was a 2nd generation American whose parents came from Italy. Fauci’s father was a pharmacist in Brooklyn and was very influential in his life. During high school, Fauci worked behind the counter at the family pharmacy and even delivered prescriptions by bicycle. He attended a Jesuit high school in Manhattan, and attended the College of Holy Cross. After college, Fauci attended Cornell Medical School in Manhattan, which was his first choice of medical school. Fauci graduate

Dr. Robert Gaynes, distinguished physician and professor of infectious diseases at Emory University, joins Meet the Microbiologist for a unique episode, in which we share the story of Françoise Barré-Sinoussi, the French, female scientist who discovered HIV and found herself at the heart of one of the most bitter scientific disputes in recent history. Subscribe (free) on Apple Podcasts, Spotify, Google Podcasts, Android, RSS or by email. Ashley's Biggest Takeaways The U.S. Centers for Disease Control and Prevention (CDC)’s Morbidity and Mortality Weekly Report first reported on a cluster of unusual infections in June of 1981, which would become known as AIDS. Evidence suggested that the disease was sexually transmitted and could be transferred via contaminated blood supply and products, as well as contaminated needles, and could be passed from mother to child. All hemophiliacs of this generation acquired AIDS (15,000 in the U.S. alone). The fact that the microbe was small enough to evade filters used to scr

Episode Summary Dr. Devin Drown, associate professor of biology and faculty director of the Institute of Arctic Biology Genomics Core at the University of Alaska Fairbanks, discusses how soil disturbance gradients in the permafrost layer impact microbial communities. He also explains the larger impacts of his research on local plant, animal and human populations, and shares his experience surveilling SARS-CoV-2 variants in Alaska, where he and colleagues have observed a repeat pattern of founder events in the state. Ashley's Biggest Takeaways Permafrost is loosely defined as soil that has been frozen for 2 or more years in a row. Some permafrost can be quite young, but a lot of it is much older—1000s of years old. This frozen soil possesses large storage capacity for walking carbon and other kinds of nutrients that can be metabolized by microbes as well as other organisms living above the frozen ground. About 85% of the landmass in Alaska is underlined by permafrost. Some is continuous permafrost, while oth

Dr. Marie Landry, Professor of Laboratory medicine and Infectious Diseases at Yale University School of Medicine and Dr. John Booss, former National Director of Neurology for the Department of Veteran’s Affairs discuss the past, present and future of diagnostic virology. These proclaimed coauthors walk us through the impact of some of the most significant pathogens of our time in preparation for the launch of their 2nd edition of “To Catch a Virus,” a book that recounts the history of viral epidemics from the late 1800s to present in a gripping storytelling fashion. Ashley's Biggest Takeaways Coauthoring a book requires having great respect for the opinions of the person you are working with. The first human disease shown to be viral in nature was yellow fever, but for quite some time, the mode of disease transmission remained mysterious. In early 1881, Carlos Finlay of Cuba suggested that the disease could be spread by mosquitoes and significantly advanced the field. It wasn’t until polio was discovered in

Dr. Wun-Ju Sheih, worked as a pathologist and infectious diseases expert with the CDC from 1995-2020. He recounts his experiences conducting high risk autopsies on the frontlines of outbreaks including Ebola, H1N1 influenza, monkeypox and SARS-CoV-1 and 2. He also addresses key questions about factors contributing to the (re)emergence and spread of pathogens and discusses whether outbreaks are becoming more frequent or simply more widely publicized. Ashley’s Biggest Takeaways: • Pathologists are a group of medical doctors serving behind the line of the daily hospital activities. • Pathology service can be divided into atomic pathology and clinical pathology. The field covers all the laboratory diagnostic work in the hospital, and clinical microbiology or medical microbiology is actually a subdivision within the clinical pathology service. • Usually, a pathologist working in a hospital will examine and dissect tissue specimens from surgery or biopsy. • The pathologist also performs autopsies as requested to de