Dr. Sven Pettersson, MD
3 nov. 2022
The Biomedical Research Center (BRC) of Qatar University hosted Dr. Sven Pettersson a Principal Investigator at the National Neuroscience Institute, Singhealth, Singapore. He talked about how Singapore is experiencing a rapid expansion of old human beings, which require changes in the health care system. Getting old if always associated with reduced organ function and increased risk to contract disease, However, the rate of organ decline, and thus biological ageing, is highly variable between individuals and subject to regulation by non-genetic factors, including the indigenous gut microbiota. The “re-discovery” that gut microbiota massively influences mammalian physiology, in an age and diet-dependent manner, open new avenues of intervention regimes targeting gut microbes as way to slow down biological ageing. Developmental programming, working in concert with maternal microbes and their metabolites, establishes a new human being. The growing offspring establishes an intricate crosstalk between its new “in house” microbes that form results in metabolic homeostasis in an exercise, diet and age-dependent manner. Organ changes by age will always be sensed by gut microbiota who reciprocate by changing composition, its functions and secretion of metabolites capable to modulate host organ function (tryptophan metabolites or production of short-chain fatty acids). The underlying mechanisms by which organ-function communicate with gut microbes and the mechanisms by which gut microbiota reciprocates to these host organ signals are largely unknown. He presented an experimental data illustrating the interplay between gut microbiota, organ function and age. Also, illustrated a vision of how we may translate our findings into next generation of food intervention therapies guiding gut microbiota to prolong health-span.