Find an expert

Stephen is a physiologist with expertise in endocrinology and student learning. In laboratory research Stephen investigates the hormonal control of metabolism, growth, appetite, and reproduction - unravelling how hormones regulate physiological mechanisms in healthy individuals versus the dysfunction that occurs in disease states. Stephen also has a scholarly interest in self-regulation of learning and metacognition.

Stephen has taught physiology at UQ to about 40,000 students in biomedical science, animal and veterinary sciences, health science, exercise science, human movement and nutrition science, dentistry, pharmacy, speech pathology, physiotherapy, occupational therapy, and medical doctor programs. He has been the recipient of numerous teaching excellence awards, including a national ALTC Citation for Outstaning Contribution to Student Learning in 2009.

From 2019 to 2024 Stephen was Director of Teaching and Learning in the School of Biomedical Sciences, and during his tenure received a UQ commendation for Service Excellence for leading his School's teaching response to the COVID pandemic, and was recognised as Academic Leader of the Year in 2020 within the UQ Faculty of Medicine.

I am a comparative and environmental physiologist based at the University of Queensland. My research focuses primarily how the environment constrains the physiology of invertebrates, fish, amphibians and reptiles. I have a highly diverse research program that incorporates fundamental, curiosity-driven research and increasingly, a more applied research agenda in the emerging field of conservation physiology. Conservation physiology explores the responses of organisms to anthropogenic threats and attempts to determine the ecophysiological constraints dictated by current conditions and future environmental change. My research interests encompass the general areas of osmo- and ion-regulation, digestive and thermal physiology, environmental drivers of physiological function (specifically immune function and disease susceptibility) and animal performance in anthropogenically modified environments.

A life-long fascination in sciences provided me with the inspiration to graduate in exercise physiology (University of Sherbrooke, Canada, 2004), complete a PhD in physiology/biophysics (University of Sherbrooke, 2009) and continue in my current role as a postdoctoral researcher at the School of Biomedical Sciences (SBMS) of The University of Queensland. I am a physiologist first and foremost with a particular interest in understanding how skeletal muscle cell normally functions so as to try and elucidate what changes or factors contribute to various forms of muscle weakness with ageing, inactivity or various chronic diseases.

During my previous postdoctoral appointment at La Trobe University (Melbourne, 2010-2017), I have gained considerable experience using the "mechanically skinned muscle fibre" technique in animal muscle. Importantly, I have developed this technique for the first time in human muscle which allows the exciting opportunity to investigate cellular mechanisms of muscle weakness in different clinical population. This is vitally important since most of our existing knowledge on muscle function comes from studies on muscles obtained from animal models. This technical breakthrough has been recognized by editorials of different leading scientific journals in the field of Physiology. I’m now a world recognized expert of this technique which has immense potential for examining any number of physiological questions and even allows for biochemical analyses of any protein of interest in the same cell.

Dr Odette Leiter is a postdoctoral research fellow in the research group of Dr Tara Walker, investigating systemic brain rejuvenation. She was awarded a PhD in Neuroscience in 2018 by the Technische Universität Dresden in Germany. Her research focus lies on the regulation of adult hippocampal neurogenesis by physical exercise, a process critically involved in learning and memory.

To support her research at the Queensland Brain Institute, Dr Odette Leiter has received two postdoctoral fellowships, a postdoctoral fellowship from the German Academic Exchange Service, followed by a Walter Benjamin Fellowship awarded by the German Research Foundation, allowing her to investigate the role of platelets in mediating neurogenesis-related learning and memory, and the capacity of platelet-released factors to restore cognitive function in ageing. More recently, Dr Leiter has been awarded a Discovery Early Career Researcher Award (DECRA) to investigate the precise mechanisms through which platelets interact with adult hippocampal neural stem cells following exercise.

Dr Melanie White heads the Dynamics of Morphogenesis Lab at the Institute for Molecular Bioscience (IMB), University of Queensland and is an ARC Future Fellow. She completed a PhD in Neuroscience at University College London followed by postdoctoral research at The University of Edinburgh. During this time Mel engineered viruses to modulate gene expression in the brain to investigate neuronal function and as a therapeutic approach for neurodegenerative disease. Her work was published in Neuron and PNAS, featured in Nature Reviews Neuroscience and received extensive international media coverage (including the BBC and The Guardian).

In 2012 Mel switched fields to apply quantitative imaging in developmental biology. Her work revealed key mechanisms driving the earliest morphogenetic events in mammalian embryogenesis and was published in Cell, Science, Nature Cell Biology, Developmental Cell and Nature Protocols. Her research was featured on the cover of multiple journals including Cell and she was awarded the inaugural American Society for Cell Biology Porter Prize for Research Excellence (2018).

In 2020, Mel joined the IMB where she will combine her passion for neuroscience and developmental biology to investigate the dynamics of neural tube morphogenesis.

Research overview

The brain and the spinal cord control most of the functions of the body and the mind, yet the dynamics of how they first form is poorly understood. Both structures arise from a common precursor, the neural tube, which forms very early in embryonic development. To generate the forces that sculpt and shape the neural tube, changes in cellular architecture must be tightly coordinated in space and time. These morphological rearrangements occur concurrently with biochemical signalling pathways that specify early neural cell fates.

Our research aims to understand how cellular properties and transcriptional regulators interact with mechanical forces in real time to direct vertebrate neural tube formation and neural cell fate specification. We study the dynamics of neural tube formation by applying advanced imaging technologies in transgenic avian models and human stem cell models.