The research proposed in this application will identify age-related changes in platelet and monocyte functions that promote a pro-inflammatory milieu and contribute to morbidity and mortality in elderly patients. The multi-disciplinary research team that will complete these studies unites established senior investigators with expertise in gerontological studies with junior investigators who have a proven track record of successful translational research. In addition, we have already received IRB approval for these studies and have established a registry of eligible young and elderly subjects allowing us to quickly enroll subjects and perform the proposed studies. We will study changes in platelet-monocyte interactions and the regulation of gene product synthesis, including IL-6 and MCP-1, in elderly and young subjects. We will also characterize shifts from a classical (CD14+/CD16-) to a non-classical, pro-inflammatory monocyte population (CD14+/CD16+) that occur during the aging process. Our investigations will identify whether altered platelet-monocyte interactions are mediated through P-selectin dependent, or independent, mechanisms. The data generated from these studies will lead directly to new investigative approaches in geriatric research and will fill important knowledge gaps. Ultimately, this information will provide the basis for novel therapeutic targets for the prevention and treatment of inflammatory and thrombotic disorders in elderly patients.
Aging is associated with significant increases in the risk of inflammatory and thrombotic disorders. The research proposed in this application will identify how the functions of platelets and monocytes are altered in elderly subjects and how these changes lead to the synthesis of pro-inflammatory gene products. The information gathered from these studies will help us understand how inflammatory responses are regulated in elderly subjects and how to develop new treatments for an aging population.
|Yost, Christian C; Schwertz, Hansjörg; Cody, Mark J et al. (2016) Neonatal NET-inhibitory factor and related peptides inhibit neutrophil extracellular trap formation. J Clin Invest 126:3783-3798|
|Rondina, M T; Freitag, M; Pluthero, F G et al. (2016) Non-genomic activities of retinoic acid receptor alpha control actin cytoskeletal events in human platelets. J Thromb Haemost 14:1082-94|
|Shih, Lauren; Kaplan, David; Kraiss, Larry W et al. (2016) Platelet-Monocyte Aggregates and C-Reactive Protein are Associated with VTE in Older Surgical Patients. Sci Rep 6:27478|
|Nance, D; Campbell, R A; Rowley, J W et al. (2016) Combined variants in factor VIII and prostaglandin synthase-1 amplify hemorrhage severity across three generations of descendants. J Thromb Haemost 14:2230-2240|
|Rondina, Matthew T; Tatsumi, Kohei; Bastarache, Julie A et al. (2016) Microvesicle Tissue Factor Activity and Interleukin-8 Levels are Associated with Mortality in Patients with Influenza A/H1N1 Infection. Crit Care Med 44:e574-8|
|Franks, Zechariah; Carlisle, McKenzie; Rondina, Matthew T (2015) Current challenges in understanding immune cell functions during septic syndromes. BMC Immunol 16:11|
|Brown, Samuel M; Grissom, Colin K; Rondina, Matthew T et al. (2015) Polymorphisms in key pulmonary inflammatory pathways and the development of acute respiratory distress syndrome. Exp Lung Res 41:155-62|
|Edholm, Karli; Ragle, Nathan; Rondina, Matthew T (2015) Antithrombotic management of atrial fibrillation in the elderly. Med Clin North Am 99:417-30|
|Rondina, Matthew T; Carlisle, McKenzie; Fraughton, Tamra et al. (2015) Platelet-monocyte aggregate formation and mortality risk in older patients with severe sepsis and septic shock. J Gerontol A Biol Sci Med Sci 70:225-31|
|Vazquez, Sara; Rondina, Matthew T (2015) Direct oral anticoagulants (DOACs). Vasc Med 20:575-7|
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