Douglas L Powell

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The National Institute on Aging (NIA) sponsored a workshop on September 8, 2004, to discuss the incidence, diagnosis, and clinical treatment of endometriosis in rhesus monkey colonies. Because of the growing number of aging studies using rhesus monkeys, this disease has become more prevalent as monkeys are living into advanced ages in captivity. The(More)
Systemic allergic reaction to a percutaneous patent foramen ovale (PFO) occlusion device is a rare event with only scattered reports in the literature. Serious allergic reactions to these devices have a poorly defined incidence, presentation, and natural history. We present a woman with a previously unknown nickel allergy who developed severe chest pain(More)
IL-27 exerts antitumor activity in murine orthotopic neuroblastoma, but only partial antitumor effect in disseminated disease. This study demonstrates that combined treatment with IL-2 and IL-27 induces potent antitumor activity in disseminated neuroblastoma metastasis. Complete durable tumor regression was achieved in 90% of mice bearing metastatic(More)
OBJECTIVE The normal ovary produces abundant testosterone in addition to estradiol (E(2)) and progesterone, but usually only the latter two hormones are "replaced" in the treatment of ovarian failure and menopause. Some clinical and genetic evidence suggests, however, that endogenous androgens normally inhibit estrogen-induced mammary epithelial(More)
The Ink4b gene (Cdkn2b) encodes p15Ink4b, a cyclin-dependent kinase inhibitor. It has been implicated in playing a role in the development of acute myeloid leukemia (AML) in man, since it is hypermethylated with high frequency. We provide evidence that the gene is a tumor suppressor for myeloid leukemia in mice. The evidence is twofold: (1)(More)
A 30-year-old East Asian American nurse reported sensitivity to alcohol-based hand sanitizers, which she frequently uses at work. Approximately 20 minutes to 4 hours after applying a hand-sanitizing gel to her hands, she develops redness, pruritus, and swelling that lasts for 1 to 2 days. She develops similar symptoms after applying perfume. After drinking(More)
Potent MHC class II antigenic peptide vaccines are created by covalently linking the N-terminus of a MHC class II epitope through a polymethylene bridge to the C-terminus of the Ii-Key segment of the Ii protein. Such hybrids enhance potency of presentation in vitro of the MHC class II epitope about 200 times relative to the epitope-only peptide. In vivo, as(More)
While health officials were understandably reluctant to implicate any specific food, others immediately observed that in the previous two years, approximately 2,500 North Americans had been stricken with cyclospora, almost exclusively linked to the consumption of fresh raspberries from Guatemala, and at almost the exact same time of year (Robertson, 1998).(More)
The American Contact Dermatitis Society recognizes the interest in the evaluation and management of metal hypersensitivity reactions. Given the paucity of robust evidence with which to guide our practices, we provide reasonable evidence and expert opinion-based guidelines for clinicians with regard to metal hypersensitivity reaction testing and patient(More)