Articles: human.
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Critical care medicine · Mar 2014
FTY720 (S)-Phosphonate Preserves Sphingosine 1-Phosphate Receptor 1 Expression and Exhibits Superior Barrier Protection to FTY720 in Acute Lung Injury.
Effective therapies are needed to reverse the increased vascular permeability that characterizes acute inflammatory diseases such as acute lung injury. FTY720 is a pharmaceutical analog of the potent barrier-enhancing phospholipid, sphingosine 1-phosphate. Because both FTY720 and sphingosine 1-phosphate have properties that may limit their usefulness in patients with acute lung injury, alternative compounds are needed for therapeutic use. The objective of this study is to characterize the effects of FTY720 (S)-phosphonate, a novel analog of FTY720-phosphate, on variables of pulmonary vascular permeability in vitro and alveolar-capillary permeability in vivo. ⋯ FTY720 (S)-phosphonate is a promising barrier-promoting agent that effectively maintains sphingosine 1-phosphate receptor 1 levels and improves outcomes in the bleomycin model of acute lung injury.
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Infectious Disease Case Reports Posters IIISESSION TYPE: Case Report PosterPRESENTED ON: Sunday, March 23, 2014 at 01:15 PM - 02:15 PMINTRODUCTION: Mycobacterium celatum was first described in 1993 and since then , sporadic reports have been published on the isolation of this mycobacterium from immunocomprised pateints. M. celatum is phenotypically similar to M. avium and M. xenopi. M. celatum is a recently described organism. Several reports exist in the literature establishing this organism as a convincing pathogen among Human Immunodeficiency Virus (HIV) seropositive patients. However, there is now evidence of its pathogenicity among individuals whose immune function is not profoundly impaired. ⋯ The following authors have nothing to disclose: Abdulrahman HakamiNo Product/Research Disclosure Information.
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Thoracic Surgery PostersSESSION TYPE: Poster PresentationsPRESENTED ON: Saturday, March 22, 2014 at 01:15 PM - 02:15 PMPURPOSE: In this study, we have assessed the ability of mesenchymal stromal cells MSCs to differentiate and to contribute in lung repair and how these cells are able to integrate in the initial healing process after a lung parenchyma injury in an animal model. ⋯ The following authors have nothing to disclose: M. Teresa Gómez-Hernández, Maria Rodríguez, Marcelo Fernando Jiménez López, Dolores Ludeña, Begoña García-Cenador, Consuelo CañizoNo Product/Research Disclosure Information.
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In septic shock (SS), dysfunction of many organ systems develops during the course of the illness, although the mechanisms are not clear. In earlier studies, we reported that lysozyme-c (Lzm-S), a protein that is released from leukocytes and macrophages, was a mediator of the myocardial depression and vasodilation that develop in a canine model of Pseudomonas aeruginosa SS. Whereas both of these effects of Lzm-S are dependent on its ability to intrinsically generate hydrogen peroxide, we subsequently showed that Lzm-S can also deposit within the vascular smooth muscle layer of the systemic arteries in this model. ⋯ In the in vivo model, Lzm-S accumulated in the kidney and the superior mesenteric artery. In a canine renal epithelial preparation, we further showed that Lzm-S can be taken up by the renal tubules to activate inflammatory pathways. We conclude that Lzm-S can deposit in the systemic vasculature and kidneys in SS, where this deposition could lead to acute organ dysfunction.
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Late Breaking AbstractsSESSION TYPE: Slide PresentationPRESENTED ON: Saturday, March 22, 2014 at 09:00 AM - 10:00 AMPURPOSE: Human immunodeficiency virus seropositivity (HIV+) has been considered a contraindication to lung transplantation (LT) primarily due to potential risks of iatrogenic immunosuppression. With the recent passage of the HIV Organ Policy Equity (HOPE) Act on November 21, 2013, the donation of HIV+ organs for transplant in HIV+ recipients is now legal in the USA. As a result there may be an increase in donors for HIV+ recipients. However, there remains only one fully published case report of LT in an HIV+ patient, limiting the evidence base with which to guide medical decision making. We report 3 HIV+ patients at two different medical centers who underwent LT. ⋯ The following authors have nothing to disclose: Ryan Kern, Harish Seethamraju, Paul Blanc, Neeraj Sinha, Matthias Loebe, Jeffrey Golden, Jasleen Kukreja, Scott Scheinin, Steve Hays, Kleinhenz Mary Ellen, Leard Lorri, Charles Hoopes, Jonathan SingerNo Product/Research Disclosure Information.