Clarissa and Kristyn Publish Review in IU Journal of Undergraduate Research

Clarissa and Kristyn’s review on sexual dimorphism in the gut microbiome was recently published in the Indiana University Journal of Undergraduate Research! In this review, Clarissa and Kristyn discuss how the composition of the gut microbiome and affiliated behaviors and health disorders differ between males and females and address the potential mechanisms that may underlie these sex differences.

A link to the manuscript can be found under the “Publications” page and can also be accessed here.

Image credit: University of California Los Angeles Oppenheimer Center for Neurobiology of Stress and Resilience.

Kim Publishes Manuscript in Journal of Experimental Biology

Former Demas lab undergraduate student Kim Long’s manuscript on the effects of acute immune activation on kisspeptin-induced reproductive hormone release was recently published in the Journal of Experimental Biology! Kim conducted this research for her undergraduate honors thesis and was mentored by former Demas lab graduate students Alison Bailey and Tim Greives. In this study, Kim showed that a single treatment of lipopolysaccharide (LPS) is sufficient to block kisspeptin-induced increases in circulating testosterone levels, but does not affect circulating luteinizing hormone levels. Together, Kim’s findings suggest that acute LPS exposure rapidly reduces gonadal sensitivity to HPG stimulation which, in turn, inhibits gonadal steroid release.

A link to the manuscript can be found under the “Publications” page and can also be accessed here.

Image credit: Wahab et al. 2018 (Frontiers in Endocrinology)

Kristyn Publishes Manuscript in Brain, Behavior, and Immunity

Former Demas lab graduate student Kristyn’s manuscript on the consequences of early-life immune activation on the gut microbiome and same-sex social behavior following antibiotic treatment in adulthood was recently published in Brain, Behavior, and Immunity! In this study, Kristyn showed that LPS-treated males exhibit more robust changes in behavior following antibiotic treatment as adults than LPS-treated females, suggesting that males may be more vulnerable to behavioral abnormalities following an early-life immune challenge.

A link for the manuscript can be found under the “Publications” page and can also be accessed here. In addition, the manuscript was chosen by the editors of BBI to be featured in a commentary, which can also be found under our website’s “Publications” page.

Image credit: McMaster University

Kat and Greg attend ICN 2018

This week, Kat and Greg attended the 2018 International Congress of Neuroendocrinology in Toronto, Canada! This meeting takes place once every four years and is sponsored by six neuroendocrine research societies from across the globe, including the Society for Behavioral Neuroendocrinology. On Sunday and Monday, Kat gave a poster presentation, in which she discussed the effects of photoperiod and melatonin administration on circulating and neural androgen levels in male Siberian hamsters. Way to go!

Welcome REU Students!

This summer, the Demas lab is hosting two students from the Center for the Integrative Study of Animal Behavior’s Research Experience for Undergraduates (REU) program: Desirée Nieves and Ayley Shortridge.  Desirée is a senior at the University of Puerto Rico at Mayagüez majoring in Animal Science, and she is interested in pursuing a career in animal conservation or veterinary medicine.  Ayley is a rising junior at Michigan State University majoring in Environmental Biology and Zoology, and she would like to attend graduate school and pursue a career in research after completing her undergraduate studies.  Welcome, Desirée and Ayley!

Congratulations to our Spring 2018 Graduates!

Congratulations to Dr. Kristyn Sylvia and undergraduate student Emma St. John, who graduated from Indiana University in May! All of us in the Demas Lab are so proud of your accomplishments, and we wish you the best of luck on your future endeavors!

Kristyn’s Research Featured on ScIU

Kristyn’s research is currently featured in a post on ScIU, a graduate student-run blog that discusses cutting-edge research and current events at Indiana University! This post, written by ScIU blogger and resident hamster guru Kat, discusses Kristyn’s findings from her project on the sex-specific effects of gut dysbiosis on the gut microbiome and behavior in Siberian hamsters.

Click here to read more about Kristyn’s research, which was recently published in the journal Brain, Behavior and Immunity!

Image credit:

Clarissa Awarded Rex Grossman Scholarship

Last week, Clarissa was awarded the Rex Grossman Scholarship from the Department of Biology! This scholarship is awarded annually to an outstanding premedical undergraduate student that will be graduating in the upcoming fall semester. Congratulations, Clarissa!

Image credit: Sandee Milhouse Photography.

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