OHSU

Elinor L Sullivan

Dr. Sullivan specializes in behavioral neuroscience with specific training and expertise in nonhuman primate behavior. A primary focus of the Sullivan laboratory is examining the influence of the metabolic and dietary environment on behavioral regulation with an emphasis on behaviors that relate to human mental health and behavioral disorders including anxiety, depression, attention deficit hyperactivity disorder, and autism spectrum disorders. Furthermore, Dr. Sullivan has expertise in whole animal physiology and measurement of energy balance regulation, feeding behavior and food preference. One specific focus is the impact that exposure to maternal obesity and high fat diet consumption during the perinatal period has on the behavior and physiology of the developing offspring.

Key findings of this research to date include an increased risk for anxiety in female offspring and deficits in social behavior in both male and female offspring exposed to maternal high fat diet consumption and obesity. Dr. Sullivan has demonstrated a suppression of the central serotonin system in offspring exposed to maternal obesity and high fat diet consumption, which likely contributes to the behavioral dysregulation observed in the high fat diet offspring. The working hypothesis is that maternal high fat diet consumption and obesity result in the developing offspring being exposed to increases in circulating inflammatory cytokines. This leads to neural inflammation in the fetus, which modulates the development of neural circuitry important in regulating physiology and behavior such as the serotonergic, melanocortinergic, and dopaminergic systems. As the majority of women of childbearing age consume a high fat diet and one third of pregnant women are obese, these studies are fundamental to understanding and identifying behavioral disorders that result from exposure to maternal obesity and HFD consumption.

In order to directly translate her findings in the nonhuman primate model, Dr. Sullivan has initiated a translational study to examine the impact of maternal diet on infant temperament in humans. In collaboration with Dr. Joel Nigg from Oregon Health & Science University, the Sullivan laboratory examines the temperament of infant children from parents diagnosed with ADHD. The relationship between the behavioral data and information on maternal diet during pregnancy, cord blood, and placenta are being examined. Together these studies will further our understanding of how maternal energy status and pre- and early- postnatal nutrition influence susceptibility to obesity and behavioral disorders such as anxiety, depression, attention deficit hyperactivity disorder, and autism spectrum disorders.  Dr. Sullivan’s research has been recognized through invited presentations at national and international meetings, serving as a reviewer for a number of scientific publications, and being invited to be part of the National Institute of Health Developmental Biology Subcommittee.

 

BIOGRAPHY

 

Dr. Sullivan has been working with nonhuman primates at the ONPRC since 2002. First, she was a graduate student with Dr. Judy Cameron, examining factors that contribute to individual differences in body weight gain in female nonhuman primates, and then a postdoctoral fellow and Staff Scientist under Dr. Kevin Grove’s mentorship. Dr. Sullivan became an Assistant Professor at the University of Portland and an Adjunct Assistant Scientist at ONPRC in 2011. She is one of the founding faculty members of the new ONPRC Division of Diabetes, Obesity, & Metabolism, and became an Assistant (core) Scientist at ONPRC in 2013. Dr. Sullivan is actively involved in training future scientists through her teaching and mentoring of University of Portland undergraduate students. Since 2011, Dr. Sullivan has mentored 14 students and a postdoctoral fellow. In addition, she participates in teaching graduate level courses, judging student research presentations at OHSU Research Week, and serving on thesis committees.

 


KEY PUBLICATIONS

 

Sullivan EL, Nousen EK, Chamlou KA. (2012). Maternal high fat diet consumption during the perinatal period programs offspring behavior. Physiology & Behavior, 2012 Oct 17. doi: 10.1016/j.physbeh.2012.07.014. [Epub ahead of print]. PMCID: PMC3594403.

 

Sullivan EL, Grayson B, Takahashi D, Bethea C, Smith MS, Coleman K, Grove KL (2010).  Chronic Consumption of a High Fat Diet During Pregnancy Causes Perturbations in Serotonergic System and Increased Anxiety-like Behavior in Nonhuman Primate Offspring. The Journal of Neuroscience, Mar 10;30(10):3826-30. PMCID: PMC2846411.  


Sullivan EL, Cameron JL. (2010). A Rapidly Occurring Compensatory Decrease in Physical Activity Counteracts Diet-Induced Weight Loss in Female Monkeys. American Journal of Physiology-Regulatory, Comparative and Integrative Physiology, Apr;298(4):R1068-74. PMCID: PMC2853396.

 

Sullivan EL, Shearin J, Koegler FH, Cameron JL. (2012). Selective Estrogen Receptor Modulator Promotes Weight Loss in Female Rhesus Monkeys (Macaca mulatta) by Decreasing Food Intake and Increasing Activity.  Am J Physiol Endocrinol Metab. 302:E759-67. PMID: 22252940.

 

Sullivan, EL; Grove, KL. (2010). Metabolic imprinting of obesity. In Forum of Nutrition. ed. Langerhans, W and Geary, N. Karger Press, New York.  63:186-198. PMCID: PMC3255478.

 

Sullivan, EL; Smith, MS; Grove KL (2011). Perinatal exposure to high-fat diet programs energy balance, metabolism and behavior in adulthood. Neuroendocrinology. 93:1-8. PMID: 21079387.

 

Sullivan EL, Koegler FH, Cameron JL. (2006). Individual Differences in Physical Activity are Closely Associated with Changes in Body Weight in Adult Female Rhesus Monkeys (Macaca mullata).  American Journal of Physiology-Regulatory, Comparative and Integrative Physiology, 3, R633-42. PMCID: PMC2837074.

 

Sullivan EL, Daniels A, Koegler FH, Cameron JL. (2005). Evidence in Female Rhesus Monkeys (Macaca mullata) that Nighttime Caloric Intake is not Associated with Weight Gain.  Obesity Research, 13, 2072-2080. PMID: 16421340.

 

See a full listing of Dr. Sullivan's publications.