101
|
Holley C, Cogswell R, Harvey L, Eckman P, Colvin-Adams M, Liao K, John R. Large Perioperative Red Blood Cell Transfusion Requirements Are Associated with Increased Long Term Mortality After LVAD Implantation. J Heart Lung Transplant 2014. [DOI: 10.1016/j.healun.2014.01.640] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
|
102
|
Ali MA, Srivastava S, Pandey MK, Agrawal VV, John R, Malhotra BD. Protein–Conjugated Quantum Dots Interface: Binding Kinetics and Label-Free Lipid Detection. Anal Chem 2014; 86:1710-8. [DOI: 10.1021/ac403543g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
|
103
|
Edmonds K, John M, John R. Closing the door on fire. Anaesthesia 2013; 68:878. [PMID: 24044455 DOI: 10.1111/anae.12360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
104
|
Baldeck CA, Harms KE, Yavitt JB, John R, Turner BL, Valencia R, Navarrete H, Bunyavejchewin S, Kiratiprayoon S, Yaacob A, Supardi MNN, Davies SJ, Hubbell SP, Chuyong GB, Kenfack D, Thomas DW, Dalling JW. Habitat filtering across tree life stages in tropical forest communities. Proc Biol Sci 2013; 280:20130548. [PMID: 23843384 PMCID: PMC3730581 DOI: 10.1098/rspb.2013.0548] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 06/14/2013] [Indexed: 11/12/2022] Open
Abstract
Tropical tree communities are shaped by local-scale habitat heterogeneity in the form of topographic and edaphic variation, but the life-history stage at which habitat associations develop remains poorly understood. This is due, in part, to the fact that previous studies have not accounted for the widely disparate sample sizes (number of stems) that result when trees are divided into size classes. We demonstrate that the observed habitat structuring of a community is directly related to the number of individuals in the community. We then compare the relative importance of habitat heterogeneity to tree community structure for saplings, juveniles and adult trees within seven large (24-50 ha) tropical forest dynamics plots while controlling for sample size. Changes in habitat structuring through tree life stages were small and inconsistent among life stages and study sites. Where found, these differences were an order of magnitude smaller than the findings of previous studies that did not control for sample size. Moreover, community structure and composition were very similar among tree sub-communities of different life stages. We conclude that the structure of these tropical tree communities is established by the time trees are large enough to be included in the census (1 cm diameter at breast height), which indicates that habitat filtering occurs during earlier life stages.
Collapse
|
105
|
Koene R, Milavitz B, Roberts J, Adatya S, Tone E, John R, Eckman P. Cost Comparison of Continuous-Flow Left Ventricular Assist Devices as Destination Therapy in Patients Over/Under Age 70. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
106
|
Ravi Y, Whitson B, Emani S, Bansal S, Kilic A, Crestanello J, John R, Higgins R, Sai-Sudhakar C. Body Mass Index Impacts Immediate and Long-Term Survival of Heart Transplant Recipients. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
|
107
|
Shah M, Naftel D, Miller M, Baldwin J, Feller E, Desai S, John R, Kormos R, Holman W. Thrombotic Complications Increase after Percutaneous Site/Pocket Infection in Patients with Left Ventricular Assist Devices: An INTERMACS Analysis. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
108
|
Mitchell A, Staggs R, Guan W, Grindle S, Adhikari N, Hozayen S, John R, Hall J, Eckman P. RNA Sequencing Identifies Novel Genes That Could Modulate Bleeding Risk in Heart Failure Patients after LVAD Placement. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
109
|
John R, Aaronson K, Pagani F, Hathaway D, Swartz M, Najarian K, Slaughter M. Impact of Demographic and On-Pump Factors on Post-Transplant Survival Following Support with the HVAD System. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
110
|
John R, Aaronson K, Pae W, Acker M, Hathaway D, Najarian K, Slaughter M. Driveline Infections and Sepsis in Patients Receiving the HVAD System as a Left-Ventricular Assist Device. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
111
|
Alsaied O, Lacey A, Eckman P, Adatya S, Colvin-Adams M, Liao K, John R. Renal Replacement Therapy in Patients Undergoing Continuous-Flow Left Ventricular Assist Devices (LVADs). J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
112
|
Koene R, Adatya S, Naksuk N, Rosenbaum A, John R, Eckman P. HAS-BLED and CHA2DS2-VASc Scores as Predictors of Bleeding and Thrombotic Risk after HeartMate II Ventricular Assist Device Implantation. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
113
|
Rosenbaum A, Duval S, Khan M, Pritzker M, John R, Eckman P. The Effect of Continuous Flow Left Ventricular Assist Device (CF-LVAD) Implantation on Serum Uric Acid Levels. J Heart Lung Transplant 2013. [DOI: 10.1016/j.healun.2013.01.720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
|
114
|
Whitson B, Bradner M, Eckman P, Shumway S, Liao K, John R. Safety and Efficacy of Selected Preoperative Intra-Aortic Balloon Pump Use in Continuous Flow Left Ventricular Assist Device (LVAD) Recipients: An Analysis of 200 Recipients. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
115
|
Catterall K, Morris K, Gladman C, Zhao H, Pasco N, John R. The use of microorganisms with broad range substrate utilisation for the ferricyanide-mediated rapid determination of biochemical oxygen demand. Talanta 2012; 55:1187-94. [PMID: 18968472 DOI: 10.1016/s0039-9140(01)00527-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2001] [Revised: 07/31/2001] [Accepted: 08/10/2001] [Indexed: 11/25/2022]
Abstract
The feasibility of replacing oxygen with a synthetic electron acceptor in microbial catabolism was investigated as a rapid method for the determination of biochemical oxygen demand (BOD). Microorganisms known for their broad range organic substrate utilisation were investigated. It was shown that Trichosporon cutaneum, Pseudomonas putida and Bacillus licheniformis could utilize the ferricyanide ion as an alternative electron acceptor, in place of oxygen, for the catabolic oxidation of a range of simple organic compounds. The biochemical reactions were monitored by measuring the amount of microbially produced ferrocyanide using amperometry at a Pt disk microelectrode. Catabolic degradation efficiencies approaching those of the conventional 5-day assay were achieved in 1 h. BOD(5) equivalent values for a range of simple organic solutions were determined for each of the microorganisms. The effect of increased incubation time and the choice of appropriate calibration standards for rapid BOD assays were also considered.
Collapse
|
116
|
Liu GC, Fang F, Zhou J, Koulajian K, Yang S, Lam L, Reich HN, John R, Herzenberg AM, Giacca A, Oudit GY, Scholey JW. Deletion of p47phox attenuates the progression of diabetic nephropathy and reduces the severity of diabetes in the Akita mouse. Diabetologia 2012; 55:2522-32. [PMID: 22653270 DOI: 10.1007/s00125-012-2586-1] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 04/17/2012] [Indexed: 01/06/2023]
Abstract
AIMS/HYPOTHESIS Reactive oxygen species (ROS) contribute to diabetes-induced glomerular injury and endoplasmic reticulum (ER) stress-induced beta cell dysfunction, but the source of ROS has not been fully elucidated. Our aim was to determine whether p47(phox)-dependent activation of NADPH oxidase is responsible for hyperglycaemia-induced glomerular injury in the Akita mouse, a model of type 1 diabetes mellitus resulting from ER stress-induced beta cell dysfunction. METHODS We examined the effect of deleting p47 (phox) (also known as Ncf1), the gene for the NADPH oxidase subunit, on diabetic nephropathy in the Akita mouse (Ins2 (WT/C96Y)) by studying four groups of mice: (1) non-diabetic mice (Ins2 (WT/WT)/p47 (phox+/+)); (2) non-diabetic p47 (phox)-null mice (Ins2 (WT/WT)/p47 (phox-/-)); (3) diabetic mice: (Ins2 (WT/C96Y)/p47 (phox+/+)); and (4) diabetic p47 (phox)-null mice (Ins2 (WT/C96Y)/p47 (phox-/-)). We measured the urinary albumin excretion rate, oxidative stress, mesangial matrix expansion, and plasma and pancreatic insulin concentrations in 16-week-old mice; we also measured glucose tolerance and insulin sensitivity, islet and glomerular NADPH oxidase activity and subunit expression, and pro-fibrotic gene expression in 8-week-old mice. In addition, we measured NADPH oxidase activity, subunit expression and pro-fibrotic gene expression in high glucose-treated murine mesangial cells. RESULTS Deletion of p47 (phox) reduced kidney hypertrophy, oxidative stress and mesangial matrix expansion, and also reduced hyperglycaemia by increasing pancreatic and circulating insulin concentrations. p47 (phox-/-) mice exhibited improved glucose tolerance, but modestly decreased insulin sensitivity. Deletion of p47 (phox) attenuated high glucose-induced activation of NADPH oxidase and pro-fibrotic gene expression in glomeruli and mesangial cells. CONCLUSIONS/INTERPRETATION Deletion of p47 (phox) attenuates diabetes-induced glomerular injury and beta cell dysfunction in the Akita mouse.
Collapse
|
117
|
Eckman P, Templeton D, Hozayen S, Baker P, John R, Colvin-Adams M, Dengel D. 769 No Change in Endothelium Dependent Flow-Mediated Dilation Following Continuous Flow Ventricular Assist Device. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
|
118
|
Uriel N, Sims D, Colombo P, Takayama H, John R, Pagani F, Naka Y, Sundareswaran K, Farrar D, Jorde U. 166 High Transpulmonary Gradient Obtained at the Time of LVAD Implantation Is Associated with Worse Long Term 1 Year Survival after Cardiac Transplantation. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
|
119
|
Goldstein D, Holman W, Moazami N, John R, Naftel D, Pagani F. 241 Impact of Malnutrition on Early Outcomes Following Implantation of Continuous Flow Left Ventricular Assist Devices. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
|
120
|
Kamdar F, Liao K, Eckman P, Colvin-Adams M, Shumway S, John R. 583 Post-Cardiac Transplant Survival in the Current Era in Patients Receiving Continuous-Flow LVADs. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
|
121
|
Kamdar F, Eckman P, Liao K, Colvin-Adams M, John R. 554 Safety of Discontinuation of Anticoagulation in Patients with Continuous-Flow LVADs. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
122
|
Zhu L, Li H, Bouldin J, John R, Yan M, Liang T. Emergy-based environmental accounting: Evaluation of Inner Mongolia Autonomous Region. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.chnaes.2011.12.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
123
|
Suszynski T, Scott W, Weegman B, Li J, Lam A, Fonger J, Ritter J, Rizzari M, Eckman P, Tempelman L, John R, Chronos N, Papas K. 423 Persufflation (i.e., Gas Perfusion) May Extend Allowable Ischemia Time during Donor Heart Preservation. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
124
|
Adamson R, John R, Goldstein D, Park S, Milano C, Tatooles A, Sundareswaran K, Farrar D, Slaughter M. 71 Heparin May Not Be Needed as a Transition to Long Term Warfarin Therapy in LVAD Destination Therapy Patients. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
|
125
|
Kamdar F, Eckman P, Goldstein D, Sai-Sudhaker C, Aggarwal S, Pagani F, John R. 31 Pump-Related Infections (PRI) after Implantation of Continuous-Flow Left Ventricular Devices (CF LVADs): Analysis of 2900 Patients from the Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS). J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
|