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33 results on '"Adams, Amy"'

7. Behavioral differences following ingestion of large meals and consequences for management of a harmful invasive snake: A field experiment

Author

Siers, Shane R., Yackel Adams, Amy A., and Reed, Robert N.

Subjects
0106 biological sciences, Arboreal locomotion, Ecology, automated telemetry, brown treesnake (Boiga irregularis), Foraging, submergent behavior, Zoology, Introduced species, Biology, behavioral ecology, biology.organism_classification, 010603 evolutionary biology, 01 natural sciences, Predation, detectability, 010601 ecology, Animal ecology, Behavioral ecology, Colubridae, foraging ecology, Ecology, Evolution, Behavior and Systematics, Original Research, Nature and Landscape Conservation, Boiga irregularis
Abstract

Many snakes are uniquely adapted to ingest large prey at infrequent intervals. Digestion of large prey is metabolically and aerobically costly, and large prey boluses can impair snake locomotion, increasing vulnerability to predation. Cessation of foraging and use of refugia with microclimates facilitating digestion are expected to be strategies employed by free‐ranging snakes to cope with the demands of digestion while minimizing risk of predation. However, empirical observations of such submergent behavior from field experiments are limited. The brown treesnake (Serpentes: Colubridae: Boiga irregularis) is a nocturnal, arboreal, colubrid snake that was accidentally introduced to the island of Guam, with ecologically and economically costly consequences. Because tools for brown treesnake damage prevention generally rely on snakes being visible or responding to lures or baits while foraging, cessation of foraging activities after feeding would complicate management. We sought to characterize differences in brown treesnake activity, movement, habitat use, and detectability following feeding of large meals (rodents 33% of the snake's unfed body mass) via radio telemetry, trapping, and visual surveys. Compared to unfed snakes, snakes in the feeding treatment group showed drastic decreases in hourly and nightly activity rates, differences in refuge height and microhabitat type, and a marked decrease in detectability by trapping and visual surveys. Depression of activity lasted approximately 5–7 days, a period that corresponds to previous studies of brown treesnake digestion and cycles of detectability. Our results indicate that management strategies for invasive brown treesnakes need to account for cycles of unavailability and underscore the importance of preventing spread of brown treesnakes to new environments where large prey are abundant and periods of cryptic behavior are likely to be frequent. Characterization of postfeeding behavior changes provides a richer understanding of snake ecology and foraging models for species that consume large prey.

Published
2018

15. Left Ventricular Remodeling and Cardiac Dysfunction in Long‐Term Burn Survivors

Author

Nasirian, Aida, primary, Nelson, Michael, additional, Kouda, Ken, additional, Romero, Steven, additional, Adams, Amy, additional, Jaffery, Manall, additional, Cramer, Matthew, additional, Moralez, Gilbert, additional, Kowalske, Karen, additional, Phelan, Herb, additional, Wolf, Steven, additional, Merz, Noel Bairey, additional, and Crandall, Craig, additional

Published
2017
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33. The effect of neoadjuvant chemotherapy on histologic grade, hormone receptor status, and HER2/neu status in breast carcinoma.

Author

Adams AL, Eltoum I, Krontiras H, Wang W, and Chhieng DC

Subjects
Antineoplastic Combined Chemotherapy Protocols therapeutic use, Female, Gene Expression drug effects, Humans, Immunohistochemistry, Mitosis drug effects, Neoplasm Staging, Receptors, Estrogen drug effects, Receptors, Progesterone drug effects, Treatment Outcome, Antineoplastic Combined Chemotherapy Protocols pharmacology, Breast Neoplasms drug therapy, Breast Neoplasms pathology, Genes, erbB-2 drug effects, Neoadjuvant Therapy
Abstract

The use of neoadjuvant chemotherapy prior to surgical resection for breast cancer is no longer restricted to patients with locally advanced disease. As preoperative treatment becomes more common, the question arises whether or not such therapy changes important tumor characteristics. The objective of our study is to compare histological grade, hormone receptor status, and HER2/neu expression pre- and post-therapy patients receiving preoperative neo-adjuvant chemotherapy. Forty patients status post-neoadjuvant treatment who had available archived pathologic material pre- and post-therapy were identified. Glass slides were reviewed retrospectively, and tumor grade, hormone receptor status, and HER2/neu expression were compared between the pre- and post-therapy specimens. No significant differences were noted between the pre- and post-specimens for two of the three parameters comprising the modified Bloom-Richardson grade, including degree of tubule formation (p = 0.062) and nuclear pleomorphism (p = 0.086). For mitotic activity, a decrease in score was observed between pre- and post-therapy specimens which was statistically significant (p = 0.021). However, there was no significant difference in the overall modified Bloom-Richardson grade (p = 0.118). Information was available regarding hormone receptor and HER2/neu status in 26 patients (65%). There was no significant difference between pre- and post-treatment specimens for hormone receptor status. However, there were more patients with HER2/neu overexpression after receiving neoadjuvant therapy (p = 0.027). Neoadjuvant therapy resulted in a significant decrease in mitotic count and an increase in the proportion of patients with HER2/neu overexpression. No significant changes were noted for the degree of tubule formation, nuclear pleomorphism, overall Bloom-Richardson score, and hormone receptor status. However, small sample size may be a limitation of these results.

Published
2008
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