The overall goal is to determine how the gonadal steroid hormone, estrogen, modulates peritoneal adhesion formation. The hypothesis is that estrogen alters connective tissue deposition and the murine model of peritoneal adhesion formation by exerting direct effects on the expression of JE, the murine homologue of the human monocyte chemoattractant protein-1 (MCP-1) in macrophages and fixed mesenchymal cells (such as fibroblast and mesothelial cells). Previous work demonstrated that ovariectomized mice given estradiol replacement had 63 percent less abdominal wall connective tissue than talc treated ovariectomized animals given placebo. The studies described involve a multifaceted analysis of the role of estrogen in the production of peritoneal adhesion formation by: a) determining whether the inhibitory effects of 17beta-estradiol in the deposition of connective tissue is a direct effect of steroid hormone or indirectly mediated by other hormones and, b) identifying possible mechanisms by which 17beta-estradiol mediated suppression of JE mRNA expression could occur including examining secondary messenger systems pathways which lead to JE mRNA expression and defining genomic elements including estrogen response elements in the flanking sequences of the JE gene. These studies will expand our knowledge of the effects of estrogen on wound healing and tissue remodeling and lead to development of therapeutic regiments to treat or lessen the severity of disorders resulting from excessive connective tissue production.
| Heinrich, Scott A; Messingham, Kelly A N; Gregory, Meredith S et al. (2003) Elevated monocyte chemoattractant protein-1 levels following thermal injury precede monocyte recruitment to the wound site and are controlled, in part, by tumor necrosis factor-alpha. Wound Repair Regen 11:110-9 |
| Jahoda, Andrew E; Olson, Mary Kay; Kovacs, Elizabeth J (2003) Murine model of peritoneal adhesion formation. Methods Mol Med 78:141-8 |
| Faunce, Douglas E; Garner, Jennifer L; Llanas, Julian N et al. (2003) Effect of acute ethanol exposure on the dermal inflammatory response after burn injury. Alcohol Clin Exp Res 27:1199-206 |
| Thiele, Geoffrey M; Szabo, Gyongyi; Kovacs, Elizabeth J et al. (2002) Modulation of immunity and viral-host interactions by alcohol. Alcohol Clin Exp Res 26:1897-908 |
| Kovacs, Elizabeth J; Messingham, Kelly A N; Gregory, Meredith S (2002) Estrogen regulation of immune responses after injury. Mol Cell Endocrinol 193:129-35 |
| Low, Q E; Drugea, I A; Duffner, L A et al. (2001) Wound healing in MIP-1alpha(-/-) and MCP-1(-/-) mice. Am J Pathol 159:457-63 |
| Messingham, K A; Messingham, K A; Shirazi, M et al. (2001) Testosterone receptor blockade restores cellular immunity in male mice after burn injury. J Endocrinol 169:299-308 |
| Fontanilla, C V; Faunce, D E; Gregory, M S et al. (2000) Anti-interleukin-6 antibody treatment restores cell-mediated immune function in mice with acute ethanol exposure before burn trauma. Alcohol Clin Exp Res 24:1392-9 |
| Gregory, M S; Duffner, L A; Faunce, D E et al. (2000) Estrogen mediates the sex difference in post-burn immunosuppression. J Endocrinol 164:129-38 |
| Choudhry, M A; Messingham, K A; Namak, S et al. (2000) Ethanol exacerbates T cell dysfunction after thermal injury. Alcohol 21:239-43 |
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