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Articles 31 - 55 of 55
Full-Text Articles in Medicine and Health Sciences
Novel Mechanisms Of Herbal Therapies For Inhibiting Hmgb1 Secretion Or Action, A. H. Wu, L. He, W. Long, Q. Zhou, S. Zhu, P. Wang, S. Fan, H. Wang
Novel Mechanisms Of Herbal Therapies For Inhibiting Hmgb1 Secretion Or Action, A. H. Wu, L. He, W. Long, Q. Zhou, S. Zhu, P. Wang, S. Fan, H. Wang
Journal Articles
High mobility group box 1 (HMGB1) is an evolutionarily conserved protein and is constitutively expressed in virtually all types of cells. In response to microbial infections, HMGB1 is secreted from activated immune cells to orchestrate rigorous inflammatory responses. Here we review the distinct mechanisms by which several herbal components inhibit HMGB1 action or secretion, such as by modulating inflammasome activation, autophagic degradation, or endocytic uptake. In light of the reciprocal interactions between these cellular processes, it is possible to develop more effective combinational herbal therapies for the clinical management of inflammatory diseases.
Milk Fat Globule Epidermal Growth Factor-Factor 8-Derived Peptide Attenuates Organ Injury And Improves Survival In Sepsis, W. L. Yang, A. Sharma, F. Zhang, S. Matsuo, Z. Wang, H. Wang, P. Wang
Milk Fat Globule Epidermal Growth Factor-Factor 8-Derived Peptide Attenuates Organ Injury And Improves Survival In Sepsis, W. L. Yang, A. Sharma, F. Zhang, S. Matsuo, Z. Wang, H. Wang, P. Wang
Journal Articles
INTRODUCTION: Sepsis involves overwhelming inflammatory responses with subsequent immune-suppression that can lead to multiple organ dysfunction and ultimately death. Milk fat globule epidermal growth factor-factor 8 (MFG-E8) is a secretory protein found to have multiple biological activities against autoimmune and inflammatory diseases. MFG-E8 contains an Arg-Gly-Asp (RGD) motif involved in cell-cell and cell-matrix interactions. In sepsis, excessive neutrophils migration through endothelial cells and matrix to sites of inflammation results in organ damage. We hypothesized that MFG-E8-derived short peptides (MSP) flanking its RGD motif could provide protection against organ injury in sepsis. METHODS: The differentiated human neutrophil-like HL-60 cells (dHL60) were …
Multiportal Combined Transorbital And Transnasal Endoscopic Resection Of Fibrous Dysplasia, T. Tham, P. Costantino, M. Bruni, D. Langer, J. Boockvar, P. Singh
Multiportal Combined Transorbital And Transnasal Endoscopic Resection Of Fibrous Dysplasia, T. Tham, P. Costantino, M. Bruni, D. Langer, J. Boockvar, P. Singh
Journal Articles
Introduction Historically, access to the anterior skull base was achieved with open procedures. The paradigms to this approach were challenged with the advent of minimally disruptive endoscopic surgical techniques and supporting technology. The next step in the evolution of minimally disruptive surgery was the combination of multiportal endoscopic surgery. Results The patient was an 18-year-old man who presented with right-sided proptosis. Further diagnostic tests revealed a fibrous dysplasia (FD) occupying the skull base and orbit. The lesion was successfully resected. Conclusions The location of the tumor in this case was challenging, in which surgeons at some centers would have opted …
Notch Receptor Expression In Human Brain Arteriovenous Malformations, S. Hill-Felberg, H. H. Wu, S. A. Toms, A. R. Dehdashti
Notch Receptor Expression In Human Brain Arteriovenous Malformations, S. Hill-Felberg, H. H. Wu, S. A. Toms, A. R. Dehdashti
Journal Articles
The roles of the Notch pathway proteins in normal adult vascular physiology and the pathogenesis of brain arteriovenous malformations are not well-understood. Notch 1 and 4 have been detected in human and mutant mice vascular malformations respectively. Although mutations in the human Notch 3 gene caused a genetic form of vascular stroke and dementia, its role in arteriovenous malformations development has been unknown. In this study, we performed immunohistochemistry screening on tissue microarrays containing eight surgically resected human brain arteriovenous malformations and 10 control surgical epilepsy samples. The tissue microarrays were evaluated for Notch 1-4 expression. We have found that …
Comparative Review Of The Treatment Methodologies Of Carotid Stenosis, C. Bae, M. Szuchmacher, J. B. Chang
Comparative Review Of The Treatment Methodologies Of Carotid Stenosis, C. Bae, M. Szuchmacher, J. B. Chang
Journal Articles
The treatment of carotid stenosis entails three methodologies, namely, medical management, carotid angioplasty and stenting (CAS), as well as carotid endarterectomy (CEA). The North American Symptomatic Carotid Endarterectomy Trial (NASCET) and European Carotid Surgery Trial (ECST) have shown that symptomatic carotid stenosis greater than 70% is best treated with CEA. In asymptomatic patients with carotid stenosis greater than 60%, CEA was more beneficial than treatment with aspirin alone according to the Asymptomatic Carotid Atherosclerosis (ACAS) and Asymptomatic Carotid Stenosis Trial (ACST) trials. When CAS is compared with CEA, the CREST resulted in similar rates of ipsilateral stroke and death rates …
Case Report: Methemoglobinemia Caused By Benzocain Spray – A Warning For Surgeons, J. Eisdorfer, J. Anwar, D. Rivadeneira
Case Report: Methemoglobinemia Caused By Benzocain Spray – A Warning For Surgeons, J. Eisdorfer, J. Anwar, D. Rivadeneira
Journal Articles
No abstract provided.
Prognostic Significance Of Lymph Node Metastases In Small Intestinal Neuroendocrine Tumors, M. K. Kim, R. R. P. Warner, S. C. Ward, N. Harpaz, S. Roayaie, M. E. Schwartz, S. Itzkowitz, J. Wisnivesky
Prognostic Significance Of Lymph Node Metastases In Small Intestinal Neuroendocrine Tumors, M. K. Kim, R. R. P. Warner, S. C. Ward, N. Harpaz, S. Roayaie, M. E. Schwartz, S. Itzkowitz, J. Wisnivesky
Journal Articles
Background/Aims: Current staging guidelines for small intestinal neuroendocrine tumors (SI-NETs) differentiate between the presence (N1) and absence (N0) of lymph node (LN) metastases. However, the prognostic significance of the extent of LN involvement remains unknown. In this study, we used data from a population-based cancer registry to examine whether involvement of a higher number of LNs is associated with worse survival. Methods: We used the Surveillance, Epidemiology, and End Results (SEER) database to identify patients with histologically confirmed, surgically resected SI-NETS diagnosed between 1988 and 2010. Patients were classified into three groups by the LN ratio (number of positive LNs/number …
Emergency Roux-En-Y Gastric Bypass To Treat "Stenosis+Leak" Combination After Sleeve Gastrectomy In A Super-Super Obese Individual, M. A. Yerdel, A. G. Turkcapar, Michael Roslin
Emergency Roux-En-Y Gastric Bypass To Treat "Stenosis+Leak" Combination After Sleeve Gastrectomy In A Super-Super Obese Individual, M. A. Yerdel, A. G. Turkcapar, Michael Roslin
Journal Articles
No abstract provided.
Effects Of Parvovirus B19 Infection In Renal Transplant Recipients: A Retrospective Review Of Three Cases, P. Krishnan, P. Ramadas, P. P. Rajendran, P. Madhavan, A. Alex, V. Jayaschandran, S. G. Humayun, N. Ali, M. Sachdeva, A. Flecha, A. Basu, M. Bhaskaran, E. P. Molmenti
Effects Of Parvovirus B19 Infection In Renal Transplant Recipients: A Retrospective Review Of Three Cases, P. Krishnan, P. Ramadas, P. P. Rajendran, P. Madhavan, A. Alex, V. Jayaschandran, S. G. Humayun, N. Ali, M. Sachdeva, A. Flecha, A. Basu, M. Bhaskaran, E. P. Molmenti
Journal Articles
Parvovirus B19 (PVB19) is a DNA virus which causes clinically relevant infection in renal transplant recipients (RTR) leading to significant morbidity. Manifestations include erythropoietin resistant anemia, proteinuria, and glomerulosclerosis in the allograft. Severe infection may require administration of intravenous immunoglobulin, reduction in immunosuppression and transfusions. The major challenge in managing and preventing the infection in RTR involves the act of balancing the decreased level of immunosuppression and the risk of rejection. The objective of this article is to understand the importance of PVB19 infection and its outcome in RTR. We reviewed the medical records of three RTR with confirmed PVB19 …
Risk Of Venous Congestion In Live Donors Of Extended Right Liver Graft, A. Radtke, G. Sgourakis, E. P. Molmenti, S. Beckebaum, V. R. Cicinnati, H. Schmidt, H. O. Peitgen, C. E. Broelsch, M. Malago, T. Schroeder
Risk Of Venous Congestion In Live Donors Of Extended Right Liver Graft, A. Radtke, G. Sgourakis, E. P. Molmenti, S. Beckebaum, V. R. Cicinnati, H. Schmidt, H. O. Peitgen, C. E. Broelsch, M. Malago, T. Schroeder
Journal Articles
AIM: To investigate middle hepatic vein (MHV) management in adult living donor liver transplantation and safer remnant volumes (RV). METHODS: There were 59 grafts with and 12 grafts without MHV (including 4 with MHV-5/8 reconstructions). All donors underwent our five-step protocol evaluation containing a preoperative protocol liver biopsy Congestive vs non-congestive RV, remnant-volume- body-weight ratios (RVBWR) and postoperative outcomes were evaluated in 71 right graft living donors. Dominant vs non-dominant MHV anatomy in total liver volume (d-MHV/TLV vs nd-MHV/TLV) was constellated with large/small congestion volumes (CV-index). Small for size (SFS) and non-SFS remnant considerations were based on standard cut-off-RVBWR and …
The Role Of B-1 Cells In Inflammation, M. Aziz, N. E. Holodick, T. L. Rothstein, P. Wang
The Role Of B-1 Cells In Inflammation, M. Aziz, N. E. Holodick, T. L. Rothstein, P. Wang
Journal Articles
B-1 lymphocytes exhibit unique phenotypic, ontogenic, and functional characteristics that differ from the conventional B-2 cells. B-1 cells spontaneously secrete germline-like, repertoire-skewed polyreactive natural antibody, which acts as a first line of defense by neutralizing a wide range of pathogens before launching of the adaptive immune response. Immunomodulatory molecules such as interleukin-10, adenosine, granulocyte-macrophage colony-stimulating factor, interleukin-3, and interleukin-35 are also produced by B-1 cells in the presence or absence of stimulation, which regulate acute and chronic inflammatory diseases. Considerable progress has been made during the past three decades since the discovery of B-1 cells, which has improved not only …
Post Splenectomy Related Pulmonary Hypertension, A.V. Palkar, A. Agrawal, S. Verma, A. Iftikhar, E.J. Miller, A. Talwar
Post Splenectomy Related Pulmonary Hypertension, A.V. Palkar, A. Agrawal, S. Verma, A. Iftikhar, E.J. Miller, A. Talwar
Journal Articles
No abstract provided.
Hypothesis: Neuroendocrine Mechanisms (Hypothalamus-Growth Hormone-Stat5 Axis) Contribute To Sex Bias In Pulmonary Hypertension, P. B. Sehgal, Y. M. Yang, E. J. Miller
Hypothesis: Neuroendocrine Mechanisms (Hypothalamus-Growth Hormone-Stat5 Axis) Contribute To Sex Bias In Pulmonary Hypertension, P. B. Sehgal, Y. M. Yang, E. J. Miller
Journal Articles
Pulmonary hypertension (PH) is a disease with high morbidity and mortality. The prevalence of idiopathic pulmonary arterial hypertension (IPAH) and hereditary pulmonary arterial hypertension (HPAH) is approximately 2-4-fold higher in women than in men. Paradoxically, there is an opposite male bias in typical rodent models of PH (chronic hypoxia or monocrotaline); in these models administration of estrogenic compounds [e.g. estradiol-17beta (E2)] is protective. Further complexities are observed in humans ingesting anorexigens (female bias), and in rodent models such as after hypoxia plus SU5416/Sugen (little sex bias) or involving serotonin transporter overexpression or dexfenfluramine administration (female bias). These complexities in sex …
Mfg-E8 Inhibits Neutrophil Migration Through Alpha(V)Beta(3)-Integrin-Dependent Map Kinase Activation, M. Aziz, W. L. Yang, L. M. Corbo, W. W. Chaung, S. Matsuo, P. Wang
Mfg-E8 Inhibits Neutrophil Migration Through Alpha(V)Beta(3)-Integrin-Dependent Map Kinase Activation, M. Aziz, W. L. Yang, L. M. Corbo, W. W. Chaung, S. Matsuo, P. Wang
Journal Articles
We have previously demonstrated the involvement of milk fat globule-epidermal growth factor-factor 8 (MFG-E8) in reducing neutrophil infiltration in a murine model of acute lung injury (ALI). In the present study, we aimed to delineate the mechanisms through which MFG-E8 attenuates neutrophil migration. Recombinant human MFG-E8 (rhMFG-E8) was expressed and purified in our facility. The human differentiated neutrophil cell line, dHL-60, was treated with rhMFG-E8 and cell migration assay was performed in a Boyden chamber using recombinant interleukin-8 (IL-8) as the chemoattractant. Surface CXCR2 and intracellular G protein-coupled receptor kinase 2 (GRK2) levels were evaluated by flow cytometry or western …
Milk Fat Globule-Egf Factor Viii Attenuates Cns Injury By Promoting Neural Stem Cell Proliferation And Migration After Cerebral Ischemia, C. Cheyuo, M. Aziz, W. L. Yang, A. Jacob, M. Zhou, P. Wang
Milk Fat Globule-Egf Factor Viii Attenuates Cns Injury By Promoting Neural Stem Cell Proliferation And Migration After Cerebral Ischemia, C. Cheyuo, M. Aziz, W. L. Yang, A. Jacob, M. Zhou, P. Wang
Journal Articles
The mediators in activating neural stem cells during the regenerative process of neurogenesis following stroke have not been fully identified. Milk fat globule-EGF Factor VIII (MFGE8), a secreted glycoprotein serves several cellular functions by binding to its receptor, alpha(v)beta(3)-integrin. However, its role in regulating neural stem cells after stroke has not been determined yet. We therefore, aim to reveal whether MFG-E8 promotes neural stem cell proliferation and migration during stroke. Stroke was induced in wild-type (Wt) and MFG-E8-deficinet (Mfge8(-/-)) mice by transient middle cerebral artery occlusion (tMCAO). Commercially available recombinant mouse MFG-E8 (rmMFG-E8) was used for mechanistic assays in neural …
Stimulation Of Brain Amp-Activated Protein Kinase Attenuates Inflammation And Acute Lung Injury In Sepsis, N. Mulchandani, W.L. Yang, M. M. Khan, F. Zhang, P. Marambaud, J. Nicastro, G.F. Coppa, P. Wang
Stimulation Of Brain Amp-Activated Protein Kinase Attenuates Inflammation And Acute Lung Injury In Sepsis, N. Mulchandani, W.L. Yang, M. M. Khan, F. Zhang, P. Marambaud, J. Nicastro, G.F. Coppa, P. Wang
Journal Articles
Sepsis and septic shock are enormous public health problems with astronomical financial repercussions on health systems worldwide. The central nervous system (CNS) is closely intertwined in the septic process but the underlying mechanism is still obscure. AMP-activated protein kinase (AMPK) is a ubiquitous energy sensor enzyme and plays a key role in regulation of energy homeostasis and cell survival. In this study, we hypothesized that activation of AMPK in the brain would attenuate inflammatory responses in sepsis, particularly in the lungs. Adult C57BL/6 male mice were treated with 5-aminoimidazole-4-carboxamide riboneucleotide (AICAR, 20 ng), an AMPK activator, or vehicle (normal saline) …
Human Ghrelin Mitigates Intestinal Injury And Mortality After Whole Body Irradiation In Rats, Z. M. Wang, W.L. Yang, A. Jacob, M. Aziz, P. Wang
Human Ghrelin Mitigates Intestinal Injury And Mortality After Whole Body Irradiation In Rats, Z. M. Wang, W.L. Yang, A. Jacob, M. Aziz, P. Wang
Journal Articles
Widespread use of ionizing radiation has led to the realization of the danger associated with radiation exposure. Although studies in radiation countermeasures were initiated a half century ago, an effective therapy for a radiomitigator has not been identified. Ghrelin is a gastrointestinal hormone, and administration of ghrelin is protective in animal models of injuries including radiation combined injury. To test whether ghrelin can be protective in whole body irradiaton (WBI) alone, male Sprague Dawley (SD) rats were treated with human ghrelin (20 nmol/rat) daily for 6 days starting at either 24 h or 48 h after 10 Gray (Gy) WBI …
Approaching The Next Revolution? Evolutionary Integration Of Neural And Immune Pathogen Sensing And Response, K. J. Tracey
Approaching The Next Revolution? Evolutionary Integration Of Neural And Immune Pathogen Sensing And Response, K. J. Tracey
Journal Articles
Mammalian immunity evolved by the process of natural selection that produced differential survival and reproduction advantages through combinations of hereditary traits underlying the response to pathogens. Primitive animals sense the presence of microbial pathogens through recognition of pathogen-derived molecules in their rudimentary immune and nervous systems. No molecular biological mechanism assigns primacy of pathogen sensing mechanisms to immune cells over neurons. Rather, in animals as diverse as Caenorhabditis elegans to mammals, neural reflexes are activated by the presence of pathogens and transduce neural mechanisms that control the development of immunity. A coming revolution in immunological thinking will require immunologists to …
Hmgb1 Mediates Anemia Of Inflammation In Murine Sepsis Survivors, S. I. Valdes-Ferrer, J. Papoin, M. E. Dancho, L. P. S. Olofsson, J. Li, J. M. Lipton, P. Avancena, H. Yang, Y. R. Zou, S. S. Chavan, B. T. Volpe, S. Rivella, B. Diamond, B. M. Steinberg, L. Blanc, K. J. Tracey, +2 Additional Authors
Hmgb1 Mediates Anemia Of Inflammation In Murine Sepsis Survivors, S. I. Valdes-Ferrer, J. Papoin, M. E. Dancho, L. P. S. Olofsson, J. Li, J. M. Lipton, P. Avancena, H. Yang, Y. R. Zou, S. S. Chavan, B. T. Volpe, S. Rivella, B. Diamond, B. M. Steinberg, L. Blanc, K. J. Tracey, +2 Additional Authors
Journal Articles
Patients surviving sepsis develop anemia but the molecular mechanism is unknown. Here we observed that mice surviving polymicrobial Gram-negative sepsis develop hypochromic, microcytic anemia with reticulocytosis. The bone marrow of sepsis survivors accumulates polychromatophilic and orthochromatic erythroblasts. Compensatory extramedullary erythropoiesis in the spleen is defective during terminal differentiation. Circulating TNF and IL-6 are elevated for five days after the onset of sepsis, and serum HMGB1 levels are increased from day seven until at least day 28. Administration of recombinant HMGB1 to healthy mice mediates anemia with extramedullary erythropoiesis and significantly elevated reticulocyte counts. Moreover, administration of anti-HMGB1 monoclonal antibodies after …
Stress Induces The Danger-Associated Molecular Pattern Hmgb-1 In The Hippocampus Of Male Sprague Dawley Rats: A Priming Stimulus Of Microglia And The Nlrp3 Inflammasome, M. D. Weber, M. G. Frank, K. J. Tracey, L. R. Watkins, S. F. Maier
Stress Induces The Danger-Associated Molecular Pattern Hmgb-1 In The Hippocampus Of Male Sprague Dawley Rats: A Priming Stimulus Of Microglia And The Nlrp3 Inflammasome, M. D. Weber, M. G. Frank, K. J. Tracey, L. R. Watkins, S. F. Maier
Journal Articles
Exposure to acute and chronic stressors sensitizes the proinflammatory response of microglia to a subsequent immune challenge. However, the proximal signal by which stressors prime microglia remains unclear. Here, high mobility group box-1 (HMGB-1) protein was explored as a potential mediator of stress-induced microglial priming and whether HMGB-1 does so via the nucleotide-binding domain, leucine-rich repeat, pyrin domain containing protein 3 (NLRP3) inflammasome. Exposure to 100 inescapable tail shocks (ISs) increased HMGB-1 and NLRP3 protein in the hippocampus and led isolated microglia to release HMGB-1 ex vivo. To determine whether HMGB-1 signaling is necessary for stress-induced sensitization of microglia, the …
Hbsc Disease And Spontaneous Epidural Hematoma With Kernohan's Notch Phenomena, M. Yogarajah, C. C. Agu, B. Sivasambu, M. A. Mittler
Hbsc Disease And Spontaneous Epidural Hematoma With Kernohan's Notch Phenomena, M. Yogarajah, C. C. Agu, B. Sivasambu, M. A. Mittler
Journal Articles
Spontaneous (nontraumatic) acute epidural hematoma is a rare and poorly understood complication of sickle cell disease. A 19-year-old African American male with hemoglobin SC disease (HbSC) presented with generalized body aches and was managed for acute painful crisis. During his hospital stay he developed rapid deterioration of his mental status and computed topography revealed a spontaneous massive epidural hematoma with mass effect and midline shift with Kernohan's notch phenomena for which urgent craniotomy and evacuation was done. We report the first case of HbSC disease associated with catastrophic epidural hematoma progressing to transtentorial herniation and Kernohan's notch phenomena within few …
Neural Circuitry And Immunity, V. Pavlov, K. J. Tracey
Neural Circuitry And Immunity, V. Pavlov, K. J. Tracey
Journal Articles
No abstract provided.
Regulation Of Post-Translational Modifications Of Hmgb1 During Immune Responses, B. Lu, Y. Tang, X. Zhao, D. Antoine, X. Xiao, H. Wang, U. Andersson, T. Billiar, K. J. Tracey
Regulation Of Post-Translational Modifications Of Hmgb1 During Immune Responses, B. Lu, Y. Tang, X. Zhao, D. Antoine, X. Xiao, H. Wang, U. Andersson, T. Billiar, K. J. Tracey
Journal Articles
SIGNIFICANCE: High mobility group protein 1 (HMGB1) is an evolutionarily conserved and multi-functional protein. The biological function of HMGB1 depends on its cellular locations, binding partners, and redox states. Extracellular HMGB1 is a mediator of inflammation during infection or tissue injury. Immune cells actively release HMGB1 in response to infection, which in turn orchestrates both innate and adaptive immune responses. RECENT ADVANCES: Hyperacetylation of HMGB1 within its nuclear localization sequences mobilizes HMGB1 from the nucleus to the cytoplasm and subsequently promotes HMGB1 release. The redox states of the cysteines in position 23, 45 and 106 determine the biological activity of …
Integrating Biodegradable 3-Dimensional-Printing Into Tracheal Reconstruction, T. Goldstein, L. Smith, B. Smith, D. Grande, D. Zeltsman
Integrating Biodegradable 3-Dimensional-Printing Into Tracheal Reconstruction, T. Goldstein, L. Smith, B. Smith, D. Grande, D. Zeltsman
Journal Articles
No abstract provided.
Remote Video Auditing With Real-Time Feedback In An Academic Surgical Suite Improves Safety And Efficiency Metrics: A Cluster Randomised Study, F. J. Overdyk, O. Dowling, S. Newman, D. Glatt, M. Chester, D. Armellino, B. Cole, G. S. Landis, D. Schoenfeld, J. F. Dicapua
Remote Video Auditing With Real-Time Feedback In An Academic Surgical Suite Improves Safety And Efficiency Metrics: A Cluster Randomised Study, F. J. Overdyk, O. Dowling, S. Newman, D. Glatt, M. Chester, D. Armellino, B. Cole, G. S. Landis, D. Schoenfeld, J. F. Dicapua
Journal Articles
IMPORTANCE: Compliance with the surgical safety checklist during operative procedures has been shown to reduce inhospital mortality and complications but proper execution by the surgical team remains elusive. OBJECTIVE: We evaluated the impact of remote video auditing with real-time provider feedback on checklist compliance during sign-in, time-out and sign-out and case turnover times. DESIGN, SETTING: Prospective, cluster randomised study in a 23-operating room (OR) suite. PARTICIPANTS: Surgeons, anaesthesia providers, nurses and support staff. EXPOSURE: ORs were randomised to receive, or not receive, real-time feedback on safety checklist compliance and efficiency metrics via display boards and text messages, followed by a …