The sex distributions for the IRL and CHS populations were virtually identical; 62.6 and 61.4 percent male, respectively. immunologic responses are compared between healthy dolphins and those with clinical and/or immunopathologic evidence of contamination with these specific viral, bacterial, and fungal pathogens. A wide range of immunologic host responses was associated Tolazamide with each pathogen, reflecting the dynamic and complex interplay between the innate, humoral, and cell-mediated immune systems in the dolphin. Collectively, these studies document the comparative innate and adaptive immune responses to various types of infectious diseases in free-ranging Atlantic bottlenose dolphins. Evaluation of the type, pattern, and degree of immunologic response to these pathogens provides novel insight on disease immunopathogenesis in this species and as a comparative model. Importantly, the data suggest that in some cases infection may be associated with subclinical immunopathologic perturbations that could Tolazamide impact overall individual and population health. Keywords:bottlenose dolphin,Tursiops truncatus, innate immune response, adaptive immune response, infectious disease == Introduction == Emerging infectious disease has become a complex and severe concern that has effects for human, animal, and environmental health on a global level (1,2). As in terrestrial species, emerging infectious brokers in marine mammals, particularly Atlantic bottlenose dolphins (Tursiops truncatus), may be associated with neoplasia, epizootics, and zoonotic transmission to humans. These emerging diseases are characterized by a multifactorial etiology including an infectious agent and non-infectious cofactors including organic and inorganic contaminants, biotoxins, and other environmental stressors (35). The immune system plays a pivotal role in the pathogenesis and end result of infectious disease. However, unanswered questions remain regarding the structure and function of the immune system in dolphins. Specifically, the immunopathogenesis of newly characterized infectious diseases and related protective immunity have not been characterized fully. A positive end result (absent or reduced morbidity, survival) following contamination depends on the host’s ability to mount a diversified immunologic response to the pathogen. Understanding the mechanisms, interactions, and events that impact the innate and adaptive immune systems is a critical first step in understanding the dynamics of infectious disease in free-ranging marine mammals. Answering these questions is especially important for the dolphins that inhabit the Indian River Tolazamide Lagoon, Florida, USA (IRL) and the Charleston, South Carolina, Harbor and related estuarine riverine ecosystem USA (CHS). A high prevalence of disease has been detected for both populations, the majority of which is caused by infectious brokers (3,6). To further characterize the dolphins’ immune response to infectious and non-infectious environmental stressors we incorporated a suite of measurements to evaluate the innate and adaptive immune systems during health assessments of Rabbit Polyclonal to Histone H2A (phospho-Thr121) these two populations. The purpose of this review is usually to compare the innate and adaptive immunologic responses in healthy dolphins with dolphins that have clinicopathologic or serologic evidence of infection by specific viral, bacterial, and fungal pathogens. == Materials and Methods == == Background == The multidisciplinary, multi-institutional Atlantic Bottlenose Dolphin Health and Environmental Risk Assessment (HERA) Project was initiated in 2003 to evaluate individual and populace health in two southeastern USA estuarine locales: the IRL and coastal waters of CHS (3). A major project goal was to further develop classical and newer diagnostic methods for the evaluation of dolphin health. Further, we aimed to conduct environmental risk assessment by exploring the associations between health status and a variety of environmental stressors of anthropogenic and natural origin. Bottlenose dolphins serve as a sentinel species for environmental and public health due to their.