alexa Partial normalization of pubertal timing in female mice with DSS colitis treated with anti-TNF-α antibody.
Immunology

Immunology

Journal of Clinical & Cellular Immunology

Author(s): Deboer MD, Steinman J, Li Y

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Abstract BACKGROUND: Inflammatory bowel disease (IBD) and resultant colitis occurring prior to puberty are frequently associated with delayed puberty and losses of growth and bone mineralization. Some of this delay may be due to colonic inflammation and associated systemic inflammation. To date no treatments for IBD have been shown to normalize the timing of puberty. Our objective in this study was to determine whether there is a normalization of the timing of puberty during treatment of colitis using monoclonal antibodies (abs) to tumor necrosis factor (TNF)-α. METHODS: We induced colitis in 23-day-old C57Bl6 female mice using 3\% dextran sodium sulfate (DSS) for 7 days, followed by removal of DSS for an additional 3 days, resulting in 10 days of worsening colitis. DSS-treated mice received either TNF-α ab or Control ab on days 4 and 8 of colitis, while non-colitic Control mice received injections of TNF-α ab (Control + TNF-α ab). All groups were followed for the timing of vaginal opening until day of life 33, when they were euthanized for serum and colon collection. RESULTS: The DSS + TNF-α ab group had lower levels of systemic interleukin (IL)-6 and a partial normalization of the timing of vaginal opening compared to the DSS + Control ab group. There were no differences in weight gain, growth, or colon histological inflammatory scores between the DSS + TNFα ab and DSS + Control ab groups over the course of the experiment. CONCLUSIONS: We conclude that anti-TNF-α ab treatment causes a partial normalization of pubertal timing coincident with decreased systemic inflammation in DSS colitis. These data may have implications regarding growth and bone mineralization outcomes in pediatric IBD.
This article was published in J Gastroenterol and referenced in Journal of Clinical & Cellular Immunology

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