@article{lennon_maharshak_elloumi_borst_plevy_moeser_2013, title={Early Life Stress Triggers Persistent Colonic Barrier Dysfunction and Exacerbates Colitis in Adult IL-10(-/-) Mice}, volume={19}, ISSN={["1078-0998"]}, DOI={10.1097/mib.0b013e3182802a4e}, abstractNote={Background:It has become increasingly evident that disease flares in the human inflammatory bowel diseases are influenced by life stress. It is known that life stress can trigger disturbances in intestinal barrier function and activate proinflammatory signaling pathways, which are important contributors to intestinal inflammation and clinical disease; however, the exact mechanisms of stress-induced inflammatory bowel disease exacerbations remain to be elucidated. Here, we presented a model of early life stress–induced exacerbation of colitis in interleukin (IL)-10−/− mice. Methods:C57Bl/6 wild-type and IL-10−/− mice were exposed to neonatal maternal separation (NMS) stress on postnatal days 1 to 18 and reared under normal conditions until 10 to 12 weeks of age. At this time, histopathology, colitis scores, intestinal barrier function, proinflammatory cytokine expression, and mast cell activity were evaluated. Results:NMS increased the severity of colitis IL-10−/− mice indicated by greater colitis scores and colonic proinflammatory cytokine concentrations. NMS and IL-10−/− increased colonic permeability; however, NMS alone did not induce colitis. Increased mast cell activation and colonic tryptase release were observed in IL-10−/− mice exposed to NMS, indicating mast cell activation. Conclusions:This study demonstrates that colitis in IL-10−/− mice can be exacerbated by NMS stress. The precise mechanisms of enhanced colitis severity in NMS IL10−/− mice are unclear but persistent defects in intestinal barrier function likely play a contributing role. NMS serves as a novel model to investigate the mechanisms by which early life stress influences the development and course of inflammatory bowel disease in adulthood.}, number={4}, journal={INFLAMMATORY BOWEL DISEASES}, author={Lennon, E. M. and Maharshak, Nitsan and Elloumi, H. and Borst, L. and Plevy, S. E. and Moeser, Adam J.}, year={2013}, pages={712–719} }
 @article{lennon_hanel_walker_vaden_2013, title={Hypercoagulability in Dogs with Protein-Losing Nephropathy as Assessed by Thromboelastography}, volume={27}, ISSN={["1939-1676"]}, DOI={10.1111/jvim.12067}, abstractNote={BackgroundDogs with protein‐losing nephropathy (PLN) are at risk of thromboembolic disease, but the mechanism leading to hypercoagulability and the population of dogs at risk are unknown.ObjectivesTo characterize thromboelastography (TEG) and its association with serum albumin (SALB), UPC, and antithrombin activity in dogs with PLN.AnimalsTwenty‐eight client‐owned dogs with PLN (urine protein:creatinine ratio [UPC] > 2.0) and 8 control dogs were prospectively enrolled in this observational study.MethodsTEG parameters, antithrombin activity, serum biochemical profiles, and UPC were measured. TEG analyses were run in duplicate with kaolin activation; reaction time (R), clot formation time (K), α‐angle (α), maximal amplitude (MA), and global clot strength (G) were analyzed.ResultsDogs with PLN had lower K (P = .004), and higher α (P = .001), MA (P < .001), and G (P < .001) values than controls. No significant correlation between TEG parameters and UPC, SALB, or antithrombin was noted. Twelve PLN dogs (42.8%) were azotemic and 19 (67.8%) were hypoalbuminemic (SALB < 3.0 g/dL); 11 had SALB < 2.5 g/dL.Conclusions and Clinical ImportanceThese results indicate that dogs with PLN have TEG values that demonstrate hypercoagulability compared with a control population but that antithrombin, SALB, or UPC cannot be used in isolation to predict this result. A comprehensive evaluation of the coagulation system in individual patients may be necessary to predict the point at which anti‐thrombotic therapy is indicated.}, number={3}, journal={JOURNAL OF VETERINARY INTERNAL MEDICINE}, author={Lennon, E. M. and Hanel, R. M. and Walker, J. M. and Vaden, S. L.}, year={2013}, pages={462–468} }
 @article{lennon_boyle_hutchins_friedenthal_correa_bissett_moses_papich_birkenheuer_2007, title={Use of basal serum or plasma cortisol concentrations to rule out a diagnosis of hypoadrenocorticism in dogs: 123 cases (2000-2005)}, volume={231}, ISSN={["0003-1488"]}, DOI={10.2460/javma.231.3.413}, abstractNote={Abstract
Objective—To determine whether basal serum or plasma cortisol concentration can be used as a screening test to rule out hypoadrenocorticism in dogs.
Design—Retrospective case-control study.
Animals—110 dogs with nonadrenal gland illnesses and 13 dogs with hypoadrenocorticism.
Procedures—Sensitivity and specificity of basal serum or plasma cortisol concentrations of either ≤ 1 μg/dL or ≤ 2 μg/dL to detect dogs with hypoadrenocorticism were estimated by use of the ACTH stimulation test as the gold standard.
Results—Basal cortisol concentrations of ≤ 1 μg/dL had excellent sensitivity (100%) and specificity (98.2%) for detecting dogs with hypoadrenocorticism. For basal cortisol concentrations of ≤ 2 μg/dL, sensitivity was 100% but specificity was 78.2%.
Conclusions and Clinical Relevance—On the basis of sensitivity and specificity, basal serum or plasma cortisol concentrations had high negative predictive values over a wide range of prevalence rates and can be used to rule out a diagnosis of hypoadrenocorticism. Dogs with basal cortisol concentrations > 2 μg/dL that are not receiving corticosteroids, mitotane, or ketoconazole are highly unlikely to have hypoadrenocorticism. However, if the basal cortisol concentration is ≤ 2 μg/dL, little to no information regarding adrenal gland function can be obtained and an ACTH stimulation test should be performed.}, number={3}, journal={JAVMA-JOURNAL OF THE AMERICAN VETERINARY MEDICAL ASSOCIATION}, author={Lennon, Elizabeth M. and Boyle, Tonya E. and Hutchins, Rae Grace and Friedenthal, Arit and Correa, Maria T. and Bissett, Sally A. and Moses, Lorra S. and Papich, Mark G. and Birkenheuer, Adam J.}, year={2007}, month={Aug}, pages={413–416} }