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Liu SY, Kelly-Hedrick M, Temkin N, Barber J, Komisarow J, Hatfield J, Ohnuma T, Manley G, Treggiari MM, Colton K, Vavilala MS, Grandhi R, Laskowitz DT, Mathew JP, Hernandez A, James ML, Raghunathan K, Goldstein B, Krishnamoorthy V. Association of Early Dexmedetomidine Utilization With Clinical and Functional Outcomes Following Moderate-Severe Traumatic Brain Injury: A Transforming Clinical Research and Knowledge in Traumatic Brain Injury Study. Crit Care Med 2024; 52:607-617. [PMID: 37966330 PMCID: PMC10939970 DOI: 10.1097/ccm.0000000000006106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
OBJECTIVE To examine early sedation patterns, as well as the association of dexmedetomidine exposure, with clinical and functional outcomes among mechanically ventilated patients with moderate-severe traumatic brain injury (msTBI). DESIGN Retrospective cohort study with prospectively collected data. SETTING Eighteen Level-1 Trauma Centers, United States. PATIENTS Adult (age > 17) patients with msTBI (as defined by Glasgow Coma Scale < 13) who required mechanical ventilation from the Transforming Clinical Research and Knowledge in TBI (TRACK-TBI) study. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS Using propensity-weighted models, we examined the association of early dexmedetomidine exposure (within the first 5 d of ICU admission) with the primary outcome of 6-month Glasgow Outcomes Scale Extended (GOS-E) and the following secondary outcomes: length of hospital stay, hospital mortality, 6-month Disability Rating Scale (DRS), and 6-month mortality. The study population included 352 subjects who required mechanical ventilation within 24 hours of admission. The initial sedative medication was propofol for 240 patients (68%), midazolam for 59 patients (17%), ketamine for 6 patients (2%), dexmedetomidine for 3 patients (1%), and 43 patients (12%) never received continuous sedation. Early dexmedetomidine was administered in 77 of the patients (22%), usually as a second-line agent. Compared with unexposed patients, early dexmedetomidine exposure was not associated with better 6-month GOS-E (weighted odds ratio [OR] = 1.48; 95% CI, 0.98-2.25). Early dexmedetomidine exposure was associated with lower DRS (weighted OR = -3.04; 95% CI, -5.88 to -0.21). In patients requiring ICP monitoring within the first 24 hours of admission, early dexmedetomidine exposure was associated with higher 6-month GOS-E score (OR 2.17; 95% CI, 1.24-3.80), lower DRS score (adjusted mean difference, -5.81; 95% CI, -9.38 to 2.25), and reduced length of hospital stay (hazard ratio = 1.50; 95% CI, 1.02-2.20). CONCLUSION Variation exists in early sedation choice among mechanically ventilated patients with msTBI. Early dexmedetomidine exposure was not associated with improved 6-month functional outcomes in the entire population, although may have clinical benefit in patients with indications for ICP monitoring.
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Affiliation(s)
- Sunny Yang Liu
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Duke University School of Medicine, Durham, NC
| | - Margot Kelly-Hedrick
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Duke University School of Medicine, Durham, NC
| | - Nancy Temkin
- Department of Biostatistics, University of Washington. Seattle, WA
- Department of Neurosurgery, University of Washington. Seattle, WA
| | - Jason Barber
- Department of Neurosurgery, University of Washington. Seattle, WA
| | | | - Jordan Hatfield
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Duke University School of Medicine, Durham, NC
| | - Tetsu Ohnuma
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Department of Anesthesiology, Duke University. Durham, NC
| | - Geoffrey Manley
- Brain and Spinal Injury Center, University of California, San Francisco, San Francisco, CA
| | - Miriam M. Treggiari
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Department of Anesthesiology, Duke University. Durham, NC
| | | | - Monica S. Vavilala
- Department of Anesthesiology and Pain Medicine, University of Washington. Seattle, WA
| | - Ramesh Grandhi
- Department of Neurosurgery, University of Utah, Salt Lake City, UT
| | - Daniel T. Laskowitz
- Department of Neurosurgery, Duke University. Durham, NC
- Department of Anesthesiology, Duke University. Durham, NC
- Department Neurology, Duke University. Durham, NC
| | | | | | - Michael L. James
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Department of Anesthesiology, Duke University. Durham, NC
- Department Neurology, Duke University. Durham, NC
| | - Karthik Raghunathan
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Department of Anesthesiology, Duke University. Durham, NC
- Department of Population Health Sciences, Duke University. Durham, NC
| | - Ben Goldstein
- Departments of Biostatistics and Bioinformatics, Duke University. Durham, NC
| | - Vijay Krishnamoorthy
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Department of Anesthesiology, Duke University. Durham, NC
- Department of Population Health Sciences, Duke University. Durham, NC
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Kelly-Hedrick M, Liu SY, Temkin N, Barber J, Komisarow J, Manley G, Ohnuma T, Colton K, Treggiari MM, Monson EE, Vavilala MS, Grandhi R, Laskowitz DT, Mathew JP, Hernandez A, James ML, Raghunathan K, Goldstein B, Markowitz AJ, Krishnamoorthy V. Association of Early Beta-Blocker Exposure and Functional Outcomes in Critically Ill Patients With Moderate to Severe Traumatic Brain Injury: A Transforming Clinical Research and Knowledge in Traumatic Brain Injury Study. Crit Care Explor 2023; 5:e0958. [PMID: 37693305 PMCID: PMC10484371 DOI: 10.1097/cce.0000000000000958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023] Open
Abstract
OBJECTIVES We aimed to 1) describe patterns of beta-blocker utilization among critically ill patients following moderate-severe traumatic brain injury (TBI) and 2) examine the association of early beta-blocker exposure with functional and clinical outcomes following injury. DESIGN Retrospective cohort study. SETTING ICUs at 18 level I, U.S. trauma centers in the Transforming Clinical Research and Knowledge in TBI (TRACK-TBI) study. PATIENTS Greater than or equal to 17 years enrolled in the TRACK-TBI study with moderate-severe TBI (Glasgow Coma Scale of <13) were admitted to the ICU after a blunt TBI. INTERVENTIONS None. MEASUREMENTS Primary exposure was a beta blocker during the first 7 days in the ICU, with a primary outcome of 6-month Glasgow Outcome Scale-Extended (GOSE). Secondary outcomes included: length of hospital stay, in-hospital mortality, 6-month and 12-month mortality, 12-month GOSE score, and 6-month and 12-month measures of disability, well-being, quality of life, and life satisfaction. MAIN RESULTS Of the 450 eligible participants, 57 (13%) received early beta blockers (BB+ group). The BB+ group was on average older, more likely to be on a preinjury beta blocker, and more likely to have a history of hypertension. In the BB+ group, 34 participants (60%) received metoprolol only, 19 participants (33%) received propranolol only, 3 participants (5%) received both, and 1 participant (2%) received atenolol only. In multivariable regression, there was no difference in the odds of a higher GOSE score at 6 months between the BB+ group and BB- group (odds ratio = 0.86; 95% CI, 0.48-1.53). There was no association between BB exposure and secondary outcomes. CONCLUSIONS About one-sixth of subjects in our study received early beta blockers, and within this group, dose, and timing of beta-blocker administration varied substantially. No significant differences in GOSE score at 6 months were demonstrated, although our ability to draw conclusions is limited by overall low total doses administered compared with prior studies.
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Affiliation(s)
- Margot Kelly-Hedrick
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Duke University School of Medicine, Duke University, Durham, NC
| | - Sunny Yang Liu
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Duke University School of Medicine, Duke University, Durham, NC
| | - Nancy Temkin
- Departments of Biostatistics, University of Washington, Seattle, WA
- Departments of Neurosurgery, University of Washington, Seattle, WA
| | - Jason Barber
- Departments of Neurosurgery, University of Washington, Seattle, WA
| | | | - Geoffrey Manley
- Departments of Brain and Spinal Injury Center, University of California, San Francisco, San Francisco, CA
| | - Tetsu Ohnuma
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Departments of Anesthesiology, Duke University, Durham, NC
| | | | - Miriam M Treggiari
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Departments of Brain and Spinal Injury Center, University of California, San Francisco, San Francisco, CA
- Departments of Population Health Sciences, Duke University, Durham, NC
| | - Eric E Monson
- Libraries Center for Data and Visualization Sciences, Duke University, Durham, NC
| | - Monica S Vavilala
- Departments of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA
| | - Ramesh Grandhi
- Department of Neurosurgery, University of Utah, Salt Lake City, UT
| | - Daniel T Laskowitz
- Departments of Neurosurgery, Duke University, Durham, NC
- Departments of Anesthesiology, Duke University, Durham, NC
- Departments of Neurology, Duke University, Durham, NC
| | | | | | - Michael L James
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Departments of Anesthesiology, Duke University, Durham, NC
- Departments of Neurology, Duke University, Durham, NC
| | - Karthik Raghunathan
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Departments of Anesthesiology, Duke University, Durham, NC
- Departments of Population Health Sciences, Duke University, Durham, NC
| | - Ben Goldstein
- Departments of Biostatistics and Bioinformatics, Duke University, Durham, NC
| | - Amy J Markowitz
- Departments of Brain and Spinal Injury Center, University of California, San Francisco, San Francisco, CA
| | - Vijay Krishnamoorthy
- Critical Care and Perioperative Population Health Research (CAPER) Unit, Department of Anesthesiology, Duke University, Durham, NC
- Departments of Anesthesiology, Duke University, Durham, NC
- Departments of Population Health Sciences, Duke University, Durham, NC
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Hostetler H, Brucker A, Goldstein B. 378 Underuse of allergist care in the management of cystic fibrosis. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01068-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Alecusan J, Barnett B, Keaton M, Goldstein B, Dbouk H, Doney C, Elliot S, Hughes-Seals L, Hoot K, Houser K, Schreiner A, Redfern R, Ruddy J. 128: Effects of standardizing time to outpatient follow-up for cystic fibrosis patients following hospital admission for pulmonary exacerbation. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01553-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Lanzoni G, Linetsky E, Correa D, Alvarez RA, Marttos A, Hirani K, Cayetano SM, Castro JG, Paidas MJ, Efantis Potter J, Xu X, Glassberg M, Tan J, Patel AN, Goldstein B, Kenyon NS, Baidal D, Alejandro R, Vianna R, Ruiz P, Caplan AI, Ricordi C. Umbilical Cord-derived Mesenchymal Stem Cells for COVID-19 Patients with Acute Respiratory Distress Syndrome (ARDS). CellR4 Repair Replace Regen Reprogram 2020; 8. [PMID: 34164564 DOI: 10.32113/cellr4_20204_2839] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The coronavirus SARS-CoV-2 is cause of a global pandemic of a pneumonia-like disease termed Coronavirus Disease 2019 (COVID-19). COVID-19 presents a high mortality rate, estimated at 3.4%. More than 1 out of 4 hospitalized COVID-19 patients require admission to an Intensive Care Unit (ICU) for respiratory support, and a large proportion of these ICU-COVID-19 patients, between 17% and 46%, have died. In these patients COVID-19 infection causes an inflammatory response in the lungs that can progress to inflammation with cytokine storm, Acute Lung Injury (ALI), Acute Respiratory Distress Syndrome (ARDS), thromboembolic events, disseminated intravascular coagulation, organ failure, and death. Mesenchymal Stem Cells (MSCs) are potent immunomodulatory cells that recognize sites of injury, limit effector T cell reactions, and positively modulate regulatory cell populations. MSCs also stimulate local tissue regeneration via paracrine effects inducing angiogenic, anti-fibrotic and remodeling responses. MSCs can be derived in large number from the Umbilical Cord (UC). UC-MSCs, utilized in the allogeneic setting, have demonstrated safety and efficacy in clinical trials for a number of disease conditions including inflammatory and immune-based diseases. UC-MSCs have been shown to inhibit inflammation and fibrosis in the lungs and have been utilized to treat patients with severe COVID-19 in pilot, uncontrolled clinical trials, that reported promising results. UC-MSCs processed at our facility have been authorized by the FDA for clinical trials in patients with an Alzheimer's Disease, and in patients with Type 1 Diabetes (T1D). We hypothesize that UC-MSC will also exert beneficial therapeutic effects in COVID-19 patients with cytokine storm and ARDS. We propose an early phase controlled, randomized clinical trial in COVID-19 patients with ALI/ARDS. Subjects in the treatment group will be treated with two doses of UC-MSC (l00 × 106 cells). The first dose will be infused within 24 hours following study enrollment. A second dose will be administered 72 ± 6 hours after the first infusion. Subject in the control group will receive infusion of vehicle (DPBS supplemented with 1% HSA and 70 U/kg unfractionated Heparin, delivered IV) following the same timeline. Subjects will be evaluated daily during the first 6 days, then at 14, 28, 60, and 90 days following enrollment (see Schedule of Assessment for time window details). Safety will be determined by adverse events (AEs) and serious adverse events (SAEs) during the follow-up period. Efficacy will be defined by clinical outcomes, as well as a variety of pulmonary, biochemical and immunological tests. Success of the current study will provide a framework for larger controlled, randomized clinical trials and a means of accelerating a possible solution for this urgent but unmet medical need. The proposed early phase clinical trial will be performed at the University of Miami (UM), in the facilities of the Diabetes Research Institute (DRI), UHealth Intensive Care Unit (ICU) and the Clinical Translational Research Site (CTRS) at the University of Miami Miller School of Medicine and at the Jackson Memorial Hospital (JMH).
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Affiliation(s)
- G Lanzoni
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, Miami, FL, USA
| | - E Linetsky
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - D Correa
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Orthopedics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - R A Alvarez
- University of Miami Health System and Jackson Health System, Miami, FL, USA.,Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - A Marttos
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,University of Miami Health System and Jackson Health System, Miami, FL, USA
| | - K Hirani
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - S Messinger Cayetano
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL, USA
| | - J G Castro
- University of Miami Health System and Jackson Health System, Miami, FL, USA.,Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - M J Paidas
- University of Miami Health System and Jackson Health System, Miami, FL, USA.,Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL, USA
| | - J Efantis Potter
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Miami Miller School of Medicine, Miami, FL, USA
| | - X Xu
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA
| | - M Glassberg
- Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ, USA
| | - J Tan
- Organ Transplant Institute, Fuzhou General Hospital, Xiamen University, Fuzhou, China
| | - A N Patel
- Department of Biomedical Engineering, University of Utah, Salt Lake City, UT, USA.,HCA Research Institute, Nashville, TN, USA
| | - B Goldstein
- Department of Head and Neck Surgery and Communication Sciences, Duke University, Durham, NC, USA
| | - N S Kenyon
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - D Baidal
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - R Alejandro
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Medicine, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - R Vianna
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,University of Miami Health System and Jackson Health System, Miami, FL, USA.,Miami Transplant Institute, Jackson Health System, Miami, FL, USA
| | - P Ruiz
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,University of Miami Health System and Jackson Health System, Miami, FL, USA.,Miami Transplant Institute, Jackson Health System, Miami, FL, USA
| | - A I Caplan
- Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ, USA
| | - C Ricordi
- Diabetes Research Institute, Cell Transplant Center, University of Miami Miller School of Medicine, Miami, FL, USA.,Department of Surgery, University of Miami Miller School of Medicine, Miami, FL, USA.,University of Miami Health System and Jackson Health System, Miami, FL, USA
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Goldstein B, Hassan A, Yusupov Y, Berger J. Retrospective Comparison of Outcomes in Patients Treated with Functionally Rigid Fixation plus Maxillomandibular Fixation Versus Patients Treated with Combined Rigid and Functionally Rigid Fixation. J Oral Maxillofac Surg 2019. [DOI: 10.1016/j.joms.2019.06.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Brandt B, Sioulas V, LaVigne K, Shahin M, Bruce S, Black D, Gandhi M, Scalici J, Jones N, Paladugu R, Brown J, Levine M, Naumann R, Mendivil A, Goldstein B, Lim P, Kang E, Cantrell L, Sullivan M, Abu-Rustum N, Leitao M. Multicenter study of minimally invasive surgery versus laparotomy for radical hysterectomy in the management of early-stage cervical cancer: Survival outcomes. Gynecol Oncol 2019. [DOI: 10.1016/j.ygyno.2019.04.063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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König v. Borstel U, Goldstein B, Kuhnke S. Possibilities of linear personality trait evaluation during foal-shows: A pilot study in American Quarter Horses. J Vet Behav 2016. [DOI: 10.1016/j.jveb.2016.08.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Goldstein B, Kim D, Zelarney P, Meadows S, Stern M, Egidio C. SAT0099 Advocating for Rheumatoid Arthritis and Cardiovascular Health (ARCH): A Systems-Based Screening Initiative in A US Tertiary Referral Center. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.5619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Paci K, Todd Bell R, Goldstein B. 592 Fingernail photo-onycholysis resulting from aminolevulinic acid-photodynamic therapy with blue light for treatment of actinic keratoses on face. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.631] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Alexis NE, Wells H, Siperly E, Goldstein B, Henderson AG, Peden DB. Baseline Sputum Parameters in Normals, Asthmatics, COPD, Atopics, Smokers and Ex-Smokers. J Allergy Clin Immunol 2016. [DOI: 10.1016/j.jaci.2015.12.1121] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Hill JN, Smith BM, Evans CT, Anaya H, Goldstein B, LaVela SL. Implementing a declination form programme to improve influenza vaccine uptake by staff in Department of Veterans Affairs spinal cord injury centres: a pilot study. J Hosp Infect 2015; 91:158-65. [PMID: 26255219 DOI: 10.1016/j.jhin.2015.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Accepted: 05/27/2015] [Indexed: 11/26/2022]
Abstract
BACKGROUND Individuals with spinal cord injuries and disorders are at high risk for respiratory and influenza-related complications after developing influenza. These individuals often have frequent contact with the healthcare system. Vaccination rates in healthcare workers at Department of Veterans Affairs (VA) spinal cord injury (SCI) centres have been approximately 50% for several years. Efforts are needed to increase vaccination uptake among SCI HCWs. Declination form programmes (DFPs) in combination with other strategies have resulted in significant increases in influenza vaccination uptake in HCWs. AIM Use of external and internal facilitation including local teams and consensus processes to pilot a DFP in two VA SCI centres and evaluate factors influencing implementation. METHODS Implementation meetings and a consensus-building process with leadership and implementation team members were conducted, along with semi-structured post-implementation interviews with members of each implementation team (N = 7). FINDINGS The DFP was well accepted and easy to use. Leadership was a key facilitator for DFP implementation. Barriers included difficulty communicating with HCWs working during early/late shifts. Participation was 100% at Site 1 and 48% at Site 2. CONCLUSION Use of local teams and consensus to identify strategies to implement a DFP is feasible and effective for achieving moderate-to-high levels of participation in the programme.
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Affiliation(s)
- J N Hill
- Spinal Cord Injury Quality Enhancement Research Initiative, Edward Hines Jr VA Hospital, Hines, IL, USA; Center of Innovation for Complex Chronic Healthcare, Edward Hines Jr VA Hospital, Hines, IL, USA.
| | - B M Smith
- Center of Innovation for Complex Chronic Healthcare, Edward Hines Jr VA Hospital, Hines, IL, USA; Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - C T Evans
- Spinal Cord Injury Quality Enhancement Research Initiative, Edward Hines Jr VA Hospital, Hines, IL, USA; Center of Innovation for Complex Chronic Healthcare, Edward Hines Jr VA Hospital, Hines, IL, USA; Department of Preventive Medicine, Center for Healthcare Studies, Institute for Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - H Anaya
- Spinal Cord Injury Quality Enhancement Research Initiative, Edward Hines Jr VA Hospital, Hines, IL, USA; Human Immunodeficiency Virus/Hepatitis Quality Enhancement Research Initiative, Los Angeles, CA, USA; University of California - Los Angeles, David Geffen School of Medicine, Los Angeles, CA, USA
| | - B Goldstein
- National Spinal Cord Injury/Disorders Services, Clinical Operations, Veterans Affairs Central Office, Seattle, WA, USA; Department of Rehabilitation Medicine, University of Washington, Seattle, WA, USA
| | - S L LaVela
- Spinal Cord Injury Quality Enhancement Research Initiative, Edward Hines Jr VA Hospital, Hines, IL, USA; Center of Innovation for Complex Chronic Healthcare, Edward Hines Jr VA Hospital, Hines, IL, USA; Center for Healthcare Studies, Institute for Public Health and Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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Jose P, Frank A, Kapphahn K, Goldstein B, Cullen M, Palaniappan L. DIFFERENCES IN CORONARY HEART DISEASE MORTALITY RATES AMONG ASIAN AMERICAN SUBGROUPS: RESULTS FROM THE CAUSES STUDY (CAUSES OF ASIAN AMERICAN MORTALITY AS UNDERSTOOD BY SOCIO-ECONOMIC STATUS). J Am Coll Cardiol 2013. [DOI: 10.1016/s0735-1097(13)61560-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Goldstein B, Sigworth FJ, Culurciello E. Noise analysis and performance comparison of low current measurement systems for biomedical applications. IEEE Trans Biomed Circuits Syst 2013; 7:52-62. [PMID: 23853279 DOI: 10.1109/tbcas.2012.2192273] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this paper, we report on the noise analysis of low current measurement systems for biomedical applications and their fundamental limits. We analyzed resistive feedback, capacitive feedback and current amplifier circuits for low current measurement systems. Detailed noise analysis for different biomedical applications are presented and matched with measurement data using a 0.5-μm fabrication process. Based on the theoretical analysis and the corresponding measurement results, the capacitive feedback system provides better noise performance for the measurement of low current than the others. The capacitive feedback circuit is capable of measuring 750 fA RMS at a 10 kHz sampling rate, whereas the resistive feedback provides 4 pA and the current conveyor provides 600 pA at the same bandwidth. This paper provides design guidelines to maximize the performance of low current measuring system for biomedical instrumentation and to provide the best performance available with CMOS technologies.
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Friedman L, Goldstein B, Rafiuddin A, Roblejo P, Friedman S. Lack of resveratrol neuroprotection in developing rats treated with kainic acid. Neuroscience 2013; 230:39-49. [DOI: 10.1016/j.neuroscience.2012.10.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 09/13/2012] [Accepted: 10/02/2012] [Indexed: 01/06/2023]
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Fusaro M, Fusaro M, Noale M, Tripepi G, D'angelo A, Miozzo D, Gallieni M, Study Group PV, Tsamelesvili M, Dimitriadis C, Papagianni A, Raidis C, Efstratiadis G, Memmos D, Mutluay R, Konca Degertekin C, Derici U, Deger SM, Akkiyal F, Gultekin S, Gonen S, Tacoy G, Arinsoy T, Sindel S, Sanchez-Perales C, Vazquez E, Merino E, Perez Del Barrio P, Borrego FJ, Borrego MJ, Liebana A, Krzanowski M, Janda K, Dumnicka P, Krasniak A, Sulowicz W, Kim YO, Yoon SA, Yun YS, Song HC, Kim BS, Cheong MA, Pasch A, Farese S, Floege J, Jahnen-Dechent W, Ohtake T, Ohtake T, Furuya R, Iwagami M, Tsutsumi D, Mochida Y, Ishioka K, Oka M, Maesato K, Moriya H, Hidaka S, Kobayashi S, Guedes A, Malho Guedes A, Pinho A, Fragoso A, Cruz A, Mendes P, Morgado E, Bexiga I, Silva AP, Neves P, Oyake N, Suzuki K, Itoh S, Yano S, Turkmen K, Kayikcioglu H, Ozbek O, Saglam M, Toker A, Tonbul HZ, Gelev S, Trajceska L, Srbinovska E, Pavleska S, Amitov V, Selim G, Dzekova P, Sikole A, Bouarich H, Lopez S, Alvarez C, Arribas I, DE Sequera P, Rodriguez D, Fusaro M, Fusaro M, Noale M, Tripepi G, D'angelo A, Miozzo D, Gallieni M, Study Group PV, Tanaka S, Kanemitsu T, Sugahara M, Kobayashi M, Uchida L, Ishimoto Y, Kotera N, Tanimoto S, Tanabe K, Hara K, Sugimoto T, Mise N, Goldstein B, Turakhia M, Arce C, Winkelmayer W, Zayed BED, Said K, Nishimura M, Nishimura M, Okamoto Y, Tokoro T, Nishida M, Hashimoto T, Iwamoto N, Takahashi H, Ono T, Nishimura M, Okamoto Y, Tokoro T, Sato N, Nishida M, Hashimoto T, Iwamoto N, Takahashi H, Ono T, Guedes A, Malho Guedes A, Cruz A, Morgado E, Pinho A, Fragoso A, Mendes P, Bexiga I, Silva AP, Neves P, Raimann J, Usvyat LA, Sands J, Levin NW, Kotanko P, Iwasaki M, Joki N, Tanaka Y, Ikeda N, Hayashi T, Kubo S, Imamura TA, Takahashi Y, Hirahata K, Imamura Y, Hase H, Claes K, Meijers B, Bammens B, Kuypers D, Naesens M, Vanrenterghem Y, Evenepoel P, Boscutti G, Calabresi L, Bosco M, Simonelli S, Boer E, Vitali C, Martone M, Mattei PL, Franceschini G, Baligh E, Zayed BED, Said K, El-Shafey E, Ezaat A, Zawada A, Rogacev K, Hummel B, Grun O, Friedrich A, Rotter B, Winter P, Geisel J, Fliser D, Heine GH, Makino JI, Makino KS, Ito T, Genovesi S, Santoro A, Fabbrini P, Rossi E, Pogliani D, Stella A, Bonforte G, Remuzzi G, Bertoli S, Pozzi C, Gallieni M, Pasquali S, Cagnoli L, Conte F, Santoro A, Buzadzic I, Tosic J, Dimkovic N, Djuric Z, Popovic J, Pejin Grubisa I, Barjaktarevic N, DI Napoli A, DI Lallo D, Salvatori MF, Franco F, Chicca S, Guasticchi G, Onofriescu M, Hogas S, Luminita V, Mugurel A, Gabriel V, Laura F, Irina M, Adrian C, Bosch E, Baamonde E, Culebras C, Perez G, El Hayek B, Ramirez JI, Ramirez A, Garcia C, Lago M, Toledo A, Checa MD, Taira T, Hirano T, Nohtomi K, Hyodo T, Chiba T, Saito A, Kim YK, Song HC, Choi EJ, Yang CW, Kim YS, Lim PS, Ming Ying W, Ya-Chung J, Zaripova I, Kayukov I, Essaian A, Nimgirova A, Young H, Dungey M, Watson EL, Baines R, Burton JO, Smith AC, Joki N, Iwasaki M, Tanaka Y, Kubo S, Hayashi T, Ikeda N, Yamazaki K, Hase H, Bossola M, Colacicco L, Scribano D, Vulpio C, Tazza L, Okada T, Okada N, Michibata I, Yura T, Montero N, Soler M, Pascual M, Barrios C, Marquez E, Rodriguez E, Orfila MA, Cao H, Arcos E, Comas J, Pascual J, Ferrario M, Garzotto F, Sironi T, Monacizzo S, Basso F, Garzotto F, Cruz DN, Moissl U, Tetta C, Signorini MG, Cerutti S, Ronco C, Mostovaya I, Grooteman M, Van den Dorpel M, Penne L, Van der Weerd N, Mazairac A, Den Hoedt C, Levesque R, Nube M, Ter Wee P, Bots M, Blankestijn P, Liu J, MA KL, Zhang X, Liu BC, Vladu ID, Mustafa R, Cana-Ruiu D, Vaduva C, Grauntanu C, Mota E, Singh R, Abbasian N, Stover C, Brunskill N, Burton J, Abbasian N, Herbert K, Bevington A, Brunskill N, Burton J, Wu M, Tang RN, Gao M, Liu H, Chen L, LV LL, Liu BC, Nikodimopoulou M, Liakos S, Kapoulas S, Karvounis C, Fedak D, Kuzniewski M, Paulina D, Kusnierz-Cabala B, Kapusta M, Solnica B, Sulowicz W, Junque A, Vicent ES, Moreno L, Fulquet M, Duarte V, Saurina A, Pou M, Macias J, Lavado M, Ramirez de Arellano M, Ryuzaki M, Nakamoto H, Kinoshita S, Kobayashi E, Takimoto C, Shishido T, Enia G, Torino C, Tripepi R, Panuccio V, Postorino M, Clementi A, Garozzo M, Bonanno G, Boito R, Natale G, Cicchetti T, Chippari A, Logozzo D, Alati G, Cassani S, Sellaro A, Zoccali C, Quiroga B, Verde E, Abad S, Vega A, Goicoechea M, Reque J, Lopez-Gomez JM, Luno J, Cabre Menendez C, Moles V, Vives JP, Villa D, Vinas J, Compte T, Arruche M, Diaz C, Soler J, Aguilera J, Martinez Vea A, De Mauri A, David P, Conte MM, Chiarinotti D, Ruva CE, De Leo M, Bargnoux AS, Morena M, Jaussent I, Chalabi L, Bories P, Dion JJ, Henri P, Delage M, Dupuy AM, Badiou S, Canaud B, Cristol JP, Fabbrini P, Sironi E, Pieruzzi F, Galbiati E, Vigano MR, Stella A, Genovesi S, Anpalakhan S, Anpalakhan S, Rocha S, Chitalia N, Sharma R, Kaski JC, Chambers J, Goldsmith D, Banerjee D, Cernaro V, Lacquaniti A, Lupica R, Lucisano S, Fazio MR, Donato V, Buemi M, Segalen I, Segalen I, Vinsonneau U, Tanquerel T, Quiniou G, Le Meur Y, Seibert E, Girndt M, Zohles K, Ulrich C, Kluttig A, Nuding S, Swenne C, Kors J, Werdan K, Fiedler R, Van der Weerd NC, Grooteman MP, Bots M, Van den Dorpel MA, Den Hoedt C, Nube MJ, Wetzels J, Swinkels DW, Blankestijn P, Ter Wee PM, Khandekar A, Khandge J, Lee JE, Moon SJ, Choi KH, Lee HY, Kim BS, Morena M, Tuaillon E, Jaussent I, Rodriguez A, Chenine L, Vendrell JP, Cristol JP, Canaud B, Sue YM, Tang CH, Chen YC, Sanchez-Perales C, Vazquez E, Segura P, Garcia Cortes MJ, Gil JM, Biechy MM, Liebana A, Poulikakos D, Shah A, Persson M, Banerjee D, Dattolo P, Amidone M, Amidone M, Michelassi S, Moriconi L, Betti G, Conti P, Rosati A, Mannarino A, Panichi V, Pizzarelli F, Klejna K, Naumnik B, Koc-Zorawska E, Mysliwiec M, Dimitrie S, Simona H, Mihaela O, Mugurel A, Gabriela O, Radu S, Octavian P, Adrian C, Akdam H, Akar H, Yenicerioglu Y, Kucuk O, Kurt Omurlu I, Goldsmith D, Thambiah S, Roplekar R, Manghat P, Manghat P, Fogelman I, Fraser W, Hampson G, Likaj E, Likaj E, Caco G, Seferi S, Rroji M, Barbullushi M, Thereska N, Onofriescu M, Hogas S, Luminita V, Mugurel A, Serban A, Carmen V, Cristian S, Silvia L, Covic A. Cardiovascular complications in CKD 5D. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Grzegorzewska AE, Niepolski L, Sikora J, Jagodzinski PP, Pajzderski D, Speer T, Rohrer L, Krankel N, Kuschnerus K, Stephen Z, Akhmedov A, Shi Y, Jung A, Wernicke G, Von Eckardstein A, Luscher TF, Fliser D, Landmesser U, Bahlmann F, Robinson B, Robinson B, Karaboyas A, Combe C, Gallagher M, De Sequera P, Yamamoto H, Morgenstern H, Schaubel D, Goodkin D, Levin N, Saran R, Port F, Goldstein B, Winkelmayer W, Assimes T, Drechsler C, Ritz E, Tomaschitz A, Pilz S, Schonfeld S, Blouin K, Bidlingmaier M, Hammer F, Krane V, Marz W, Allolio B, Fassnacht M, Wanner C, Nishimura M, Okamoto Y, Tokoro T, Nishida M, Sato N, Hashimoto T, Iwamoto N, Ono T. Cardiovascular complications in CKD 5d. Nephrol Dial Transplant 2012. [DOI: 10.1093/ndt/gfs204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abaid L, Micha J, Rettenmaier M, Brown J, Mendivil A, Lopez K, Goldstein B. A phase II study of modified dose-dense paclitaxel and every 4week carboplatin for the treatment of advanced stage primary epithelial ovarian, fallopian tube, or peritoneal carcinoma. Gynecol Oncol 2012. [DOI: 10.1016/j.ygyno.2011.12.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Rodriguez-Hart C, Goldstein B, Aynalem G, Kerndt P. P5-S7.14 High Chlamydia and gonorrhoea incidence, reinfection and HIV infection among workers in the adult film industry: time to regulate and protect workers. Br J Vener Dis 2011. [DOI: 10.1136/sextrans-2011-050108.609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Saghyan A, LaTorre GN, Keesey R, Sharma A, Mehta V, Rudenko V, Hallas BH, Rafiuddin A, Goldstein B, Friedman LK. Glutamatergic and morphological alterations associated with early life seizure-induced preconditioning in young rats. Eur J Neurosci 2010; 32:1897-911. [DOI: 10.1111/j.1460-9568.2010.07464.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Diler RS, Birmaher B, Axelson D, Goldstein B, Gill M, Strober M, Kolko DJ, Goldstein TR, Hunt J, Yang M, Ryan ND, Iyengar S, Dahl RE, Dorn LD, Keller MB. The Child Behavior Checklist (CBCL) and the CBCL-bipolar phenotype are not useful in diagnosing pediatric bipolar disorder. J Child Adolesc Psychopharmacol 2009; 19:23-30. [PMID: 19232020 PMCID: PMC2753490 DOI: 10.1089/cap.2008.067] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVES Previous studies have suggested that the sum of Attention, Aggression, and Anxious/Depressed subscales of Child Behavior Checklist (CBCL-PBD; pediatric bipolar disorder phenotype) may be specific to pediatric bipolar disorder (BP). The purpose of this study was to evaluate the usefulness of the CBCL and CBCL-PBD to identify BP in children <12 years old. METHODS A sample of children with BP I, II, and not otherwise specified (NOS) (n = 157) ascertained through the Course and Outcome for Bipolar Disorder in Youth (COBY) study were compared with a group of children with major depressive/anxiety disorders (MDD/ANX; n = 101), disruptive behavior disorder (DBD) (n = 127), and healthy control (HC) (n = 128). The CBCL T-scores and area under the curve (AUC) scores were calculated and compared among the above-noted groups. RESULTS Forty one percent of BP children did not have significantly elevated CBCL-PBD scores (>or=2 standard deviations [SD]). The sensitivity and specificity of CBCL-PBD >or= 2 SD for diagnosis of BP was 57% and 70-77%, respectively, and the accuracy of CBCL-PBD for identifying a BP diagnosis was moderate (AUC = 0.72-0.78). CONCLUSION The CBCL and the CBCL-PBD showed that BP children have more severe psychopathology than HC and children with other psychopathology, but they were not useful as a proxy for Diagnostic and Statistical Manual of Mental Disorders, 4(th) edition (DSM-IV) diagnosis of BP.
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Affiliation(s)
- Rasim Somer Diler
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA.
| | - Boris Birmaher
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - David Axelson
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Ben Goldstein
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - MaryKay Gill
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Michael Strober
- Department of Psychiatry, UCLS Semel Institute, Los Angeles, California
| | - David J. Kolko
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Tina R. Goldstein
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Jeffrey Hunt
- Department of Psychiatry, Brown University, Providence, Rhode Island
| | - Mei Yang
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Neal D. Ryan
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Satish Iyengar
- Department of Statistics, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Ronald E. Dahl
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Lorah D. Dorn
- Division of Adolescent Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Martin B. Keller
- Department of Psychiatry, Brown University, Providence, Rhode Island
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Ellis T, McNames J, Goldstein B. Optimal Filter Design to Compute the Mean of Cardiovascular Pressure Signals. IEEE Trans Biomed Eng 2008; 55:1399-407. [DOI: 10.1109/tbme.2007.906491] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Brown JV, Rettenmaier MA, Lopez KL, Graham C, Micha JP, Goldstein B. A phase II, multicenter trial of weekly topotecan in patients with recurrent platinum-sensitive epithelial cancers of the ovary and peritoneum. Int J Gynecol Cancer 2008; 18:249-54. [DOI: 10.1111/j.1525-1438.2007.01001.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
The purpose of this study was to evaluate the response rate and toxicity of weekly topotecan in patients with recurrent platinum-sensitive epithelial cancers of the ovary and peritoneum. Thirty-nine platinum-sensitive recurrent ovarian cancer patients received topotecan (4 mg/m2) intravenously day 1, day 8, day 15, every 28 days. Colony-stimulating factors were excluded from the study. Clinical response was assessed by clinical, serologic, and radiographic measures at the conclusion of cycle four. Patients received 136 cycles of topotecan (median = 3; range 1–6) and were evaluated for response and toxicity. Median number of prior regimens was one. Grade 3/4 neutropenia developed in 3 (7.7%) patients. Grade 3 thrombocytopenia was seen in one (2.6%) patient, with no incidence of grade 4 thrombocytopenia. There was no evidence of grade 3 anemia, but one patient (2.6%) was associated with grade 4 anemia. There was no grade 3 or 4 neuropathy. We encountered 18 dose reductions following less than or equal to grade 2 myelosuppression, necessitating the removal of eight (20.5%) patients prior to cycle four. Twenty-one (53.8%) patients were removed from the study due to disease progression. Following the completion of cycle four, four (10.3%) patients demonstrated stable disease and four (10.3%) patients exhibited a partial response. There were no complete responses. Median disease-free survival was 12 weeks. Weekly topotecan (4 mg/m2) demonstrated modest activity and was moderately well tolerated. However, the significant number of dose reductions and high incidence of patients who demonstrated disease progression suggests additional modifications with this specific regimen are necessary.
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Aboy M, McNames J, Márquez O, Hornero R, Thong T, Goldstein B. Power spectral density estimation and tracking nonstationary pressure signals based on Kalman filtering. Conf Proc IEEE Eng Med Biol Soc 2007; 2006:156-9. [PMID: 17271629 DOI: 10.1109/iembs.2004.1403115] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We describe an algorithm to estimate and track slow changes in power spectral density (PSD) of nonstationary pressure signals. The algorithm is based on a Kalman filter that adaptively generates an estimate of the autoregressive model parameters at each time instant. The algorithm exhibits superior PSD tracking performance in nonstationary pressure signals than classical nonparametric methodologies, and does not assume a piecewise stationary model of the data. Furthermore, it provides better time-frequency resolution, and is robust to model mismatches. We demonstrate its usefulness by a sample application involving PSD estimation and tracking of short records of simulated pressure waveforms. This algorithm is intended for applications were the PSD must be estimated and tracked during short transient periods, possibly after clinical interventions.
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Affiliation(s)
- M Aboy
- BiomedicaI Signal Process. Laboratory, Electr. & Comput. Eng., Portland State Univ., USA
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Wakeland W, McNames J, Goldstein B. Calibrating an intracranial pressure dynamics model with clinical data - a progress report. Conf Proc IEEE Eng Med Biol Soc 2007; 2006:746-9. [PMID: 17271785 DOI: 10.1109/iembs.2004.1403266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
We describe the calibration of a computer model of intracranial pressure (ICP) dynamics to correspond with annotated clinical data taken from a patient being treated for elevated ICP due to a traumatic brain injury. The research protocol employed during treatment includes adjusting the elevation of the head of the bed, adjusting the ventilator settings to induce mild hyperventilation and hypoventilation, and adjusting the height of the cerebrospinal fluid drainage system. The model behavior corresponds to the experimental data quite well in the case of the changing the head of the bed, but less well in the case of changing the ventilator settings.
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Affiliation(s)
- W Wakeland
- Systems Science Ph.D Program, Portland State Univ., OR, USA
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Aboy M, McNames J, Hornero R, Thong T, Cuesta D, Novak D, Goldstein B. A novel statistical model for simulation of arterial and intracranial pressure. Conf Proc IEEE Eng Med Biol Soc 2007; 2006:129-32. [PMID: 17271622 DOI: 10.1109/iembs.2004.1403108] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We describe a novel statistical model of pressure signals that incorporates the effects of respiration on arterial (ABP) and intracranial pressure (ICP). This model can be used to synthesize pulsatile ABP and ICP signals with similar time, frequency, and variability characteristics of real pressure signals. These synthetic signals can be used during the development, simulation, or quantitative assessment of biomedical algorithms in a variety of applications.
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Affiliation(s)
- M Aboy
- Biomedical Signal Process. Laboratory, Electr. & Comput. Eng., Portland State Univ., USA
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Stan E, McNames J, Kohles SS, Biber C, Biberic N, Leech N, Mangan RW, McKinney TJ, Surdu M, Goldstein B. Mechanical vasoconstriction for a cerebral myogenic autoregulatory model. Conf Proc IEEE Eng Med Biol Soc 2007; 2004:883-6. [PMID: 17271819 DOI: 10.1109/iembs.2004.1403300] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
This work presents the design of a mechanical vasoconstriction mechanism with application for cerebral autoregulation. The relationship between the applied voltage of a DC motor and the tension within a pressurized vessel wall was utilized for constricting an arteriole segment within an intracranial vascular model. Using current proportional to the string tension, options for closed loop feedback control are considered.
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Affiliation(s)
- E Stan
- Dept. of Electr. & Comput. Eng., Portland State Univ., USA
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Abstract
The activities and interactions of proteins that govern the cellular response to a signal generate a multitude of protein phosphorylation states and heterogeneous protein complexes. Here, using a computational model that accounts for 307 molecular species implied by specified interactions of four proteins involved in signalling by the immunoreceptor FcepsilonRI, we determine the relative importance of molecular species that can be generated during signalling, chemical transitions among these species, and reaction paths that lead to activation of the protein tyrosine kinase (PTK) Syk. By all of these measures and over two- and ten-fold ranges of model parameters--rate constants and initial concentrations--only a small portion of the biochemical network is active. The spectrum of active complexes, however, can be shifted dramatically, even by a change in the concentration of a single protein, which suggests that the network can produce qualitatively different responses under different cellular conditions and in response to different inputs. Reduced models that reproduce predictions of the full model for a particular set of parameters lose their predictive capacity when parameters are varied over two-fold ranges.
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Affiliation(s)
- J R Faeder
- Theoretical Biology and Biophysics Group, Theoretical Division, Los Alamos National Laboratory, New Mexico 87545, USA.
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Wakeland W, Fusion J, Goldstein B. Reproducing published results from in silico computer models of the acute inflammatory response to severe sepsis. J Crit Care 2006. [DOI: 10.1016/j.jcrc.2006.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wakeland W, Fusion J, Goldstein B. Creating clinically useful in silico models of intracranial pressure dynamics. J Crit Care 2005. [DOI: 10.1016/j.jcrc.2005.09.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Aboy M, McNames J, Wakeland W, Goldstein B. Pulse and mean intracranial pressure analysis in pediatric traumatic brain injury. Acta Neurochir Suppl 2005; 95:307-10. [PMID: 16463871 DOI: 10.1007/3-211-32318-x_63] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
OBJECTIVE We investigated the relationship between the intracranial pulse pressure (ICPpp) and the mean intracranial pressure (ICP(M)) in pediatric patients with traumatic brain injury (TBI). METHODS We screened ICP records of 42 patients admitted to the Pediatric Intensive Care Unit at Doernbecher Children's Hospital (OHSU) for segments in which the ICPM varied at least 5 mmHg. We found 54 ICP segments in 9 pediatric TBI patients (ages 0.2-17.8 years, mean = 9.9). ICP was continuously monitored (fs = 125 Hz). We used an automatic algorithm to detect ICP beat components. We then calculated the ICPpp and ICPM for each beat and created density plots of ICPpp vs. ICPM. RESULTS The coefficient of linear correlation was r > 0.70 in 43/54 segments (p < 0.01). We found that an underlying linear relationship exits between ICPpp and ICPM in most 1-hour records of pediatric patients with TBI. This finding is consistent with the data in adult studies, suggesting that children with TBI demonstrate similar changes in brain compliance. However, density plots revealed that there are also nonlinear ICPpp-ICPM patterns present that are not captured by linear metrics. CONCLUSION Although there is an underlying linear relationship between ICPpp and ICPM, nonlinear patterns are also present. Further research is required to determine if specific nonlinear ICPpp-ICPM patterns correlate with clinically significant information.
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Affiliation(s)
- M Aboy
- Biomedical Signal Processing Laboratory, Department of Electrical and Computer Engineering at Portland State University, Portland, OR, USA
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Wakeland W, Goldstein B. A computer model of intracranial pressure dynamics during traumatic brain injury that explicitly models fluid flows and volumes. Acta Neurochir Suppl 2005; 95:321-6. [PMID: 16463874 DOI: 10.1007/3-211-32318-x_66] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A model of intracranial pressure (ICP) dynamics that uses fluid volumes as primary state variables is presented, along with clinical data for two subjects with elevated ICP. The data includes annotations to indicate the precise timing of clinical changes in cerebral spinal fluid drainage, head of bed elevation, and minute ventilation. The response to changes in the clinical parameters was used to calibrate the model to correspond to specific subjects by estimating values for key characteristics such as hematoma volume and CSF uptake resistance. The error in mean ICP predicted by the model was less than 2 mmHg when cerebral spinal fluid is drained and the head of bed elevation was increased. The error in mean ICP predicted by the model exceeded 5 mmHg during an episode when the head of bed was decreased and also during a reduction in minute ventilation. The estimated values for hematoma volume and other subject characteristics were plausible but could not be verified empirically.
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Affiliation(s)
- W Wakeland
- Systems Science Ph.D. Program, Portland State University, Portland, OR, USA.
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Goldstein B, Halaihel N, Levi M, Jiang T. 318 DIET INDUCED OBESITY AND INSULIN RESISTANCE CAUSES INCREASED RENAL EXPRESSION OF STEROL REGULATORY ELEMENT BINDING PROTEINS 1 AND 2, LIPID ACCUMULATION, AND GLOMERULOSCLEROSIS. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Abstract
The phylum Nematoda serves as an excellent model system for exploring how development evolves, using a comparative approach to developmental genetics. More than 100 laboratories are studying developmental mechanisms in the nematode Caenorhabditis elegans, and many of the methods that have been developed for C. elegans can be applied to other nematodes. This review summarizes what is known so far about steps in early development that have evolved in the nematodes, and proposes potential experiments that could make use of these data to further our understanding of how development evolves. The promise of such a comparative approach to developmental genetics is to fill a wide gap in our understanding of evolution--a gap spanning from mutations in developmental genes through to their phenotypic results, on which natural selection may act.
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Affiliation(s)
- B Goldstein
- Department of Biology, University of North Carolina at Chapel Hill, CB3280, Chapel Hill, NC 27599, USA
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Ellenby MS, McNames J, Lai S, McDonald BA, Krieger D, Sclabassi RJ, Goldstein B. Uncoupling and recoupling of autonomic regulation of the heart beat in pediatric septic shock. Shock 2001; 16:274-7. [PMID: 11580109 DOI: 10.1097/00024382-200116040-00007] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Healthy physiological systems exhibit marked signal variability and complexity, whereas diseased systems generally show a loss of variability, decreased complexity ("decomplexification"), and increased regularity. The goal of this study was to evaluate the uncoupling and recoupling phenomenon in children with septic shock by observing serial changes in heart rate variability metrics. Data were collected from 7 children with septic shock by using the computer system in the Complex Systems Laboratory at Oregon Health Sciences University. Heart rate time series were constructed and analyzed by using the Hales Research System at intervals of 6 h during pediatric intensive care unit (PICU) hospitalization. These power spectral values were then plotted vs. time. Six of seven patients showed an increase over time in low-frequency heart rate power and the low-/high-frequency ratio, whereas high-frequency heart rate power decreased. We also compared the change in mean heart rate, heart rate standard deviation, and power spectral values during the first 24 h of PICU hospitalization vs. the remainder of the PICU stay (for the 5 patients with a PICU length of stay > 48 h). Compared to the initial 24 h in the PICU, low-frequency power and the low-/high-frequency ratio increased, whereas high-frequency power decreased over the course of the illness. This report shows the potential value of monitoring the uncoupling and recoupling phenomenon in patients with septic shock. Our results are in agreement with other investigators who report evidence of decomplexification both in experimental models of sepsis and in clinical studies and provide direction for further work.
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Affiliation(s)
- M S Ellenby
- Division of Pediatric Critical Care, Doernbecher Children's Hospital, Oregon Health Sciences University, Portland 97201, USA
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Abstract
Computers are commonly used to serve many functions in today's modern intensive care unit. One of the most intriguing and perhaps most challenging applications of computers has been to attempt to improve medical education. With the introduction of the first computer, medical educators began looking for ways to incorporate their use into the modern curriculum. Prior limitations of cost and complexity of computers have consistently decreased since their introduction, making it increasingly feasible to incorporate computers into medical education. Simultaneously, the capabilities and capacities of computers have increased. Combining the computer with other modern digital technology has allowed the development of more intricate and realistic educational tools. The purpose of this article is to briefly describe the history and use of computers in medical education with special reference to critical care medicine. In addition, we will examine the role of computers in teaching and learning and discuss the types of interaction between the computer user and the computer.
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Affiliation(s)
- K Tegtmeyer
- Department of Pediatrics, Oregon Health Sciences University, Portland, OR, USA.
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Abstract
As part of an examination of how developmental mechanisms such as axis specification, cell fate specification, and segmentation have evolved, we have cloned homologs of the Drosophila melanogaster genes dorsal and snail from the glossiphoniid leech Helobdella robusta. Sequences from one dorsal-class gene (Hro-dl) and two snail-class genes (Hro-sna1 and Hro-sna2) were identified. Polyclonal antibodies were raised against the most conserved domains of HRO-DL and HRO-SNA1. Nuclear staining appeared for both proteins in mid-embryogenesis, in mesodermal and ectodermal precursors. During segmentation, segmentally iterated stripes of cells with strong HRO-DL staining appeared. The stripes of HRO-DL staining were first concentrated in the cytoplasm of cells, and later in the nuclei. Around this time, HRO-SNA levels also appeared in nuclei in segmentally iterated stripes. The localization of HRO-DL and HRO-SNA proteins raise the possibility that these genes are part of a conserved genetic pathway that, instead of specifying the dorsoventral axis and the mesoderm as in flies, might play a role in the diversification of cell types within segment primordia during leech development.
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Affiliation(s)
- B Goldstein
- Department of Molecular and Cell Biology, University of California, Berkeley, CA 94720-3200, USA
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Hlavacek WS, Redondo A, Metzger H, Wofsy C, Goldstein B. Kinetic proofreading models for cell signaling predict ways to escape kinetic proofreading. Proc Natl Acad Sci U S A 2001; 98:7295-300. [PMID: 11390967 PMCID: PMC34662 DOI: 10.1073/pnas.121172298] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
In the context of cell signaling, kinetic proofreading was introduced to explain how cells can discriminate among ligands based on a kinetic parameter, the ligand-receptor dissociation rate constant. In the kinetic proofreading model of cell signaling, responses occur only when a bound receptor undergoes a complete series of modifications. If the ligand dissociates prematurely, the receptor returns to its basal state and signaling is frustrated. We extend the model to deal with systems where aggregation of receptors is essential to signal transduction, and present a version of the model for systems where signaling depends on an extrinsic kinase. We also investigate the kinetics of signaling molecules, "messengers," that are generated by aggregated receptors but do not remain associated with the receptor complex. We show that the extended model predicts modes of signaling that exhibit kinetic discrimination for some range of parameters but for other parameter values show little or no discrimination and thus escape kinetic proofreading. We compare model predictions with experimental data.
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Affiliation(s)
- W S Hlavacek
- Theoretical Biology and Biophysics Group, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
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Goldstein B. Anatomy of the peripheral nervous system. Phys Med Rehabil Clin N Am 2001; 12:207-36. [PMID: 11345004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
Abstract
This article is an overview of the structure and components of the peripheral nervous system. The fine structure and gross anatomy of peripheral nerves and ganglia are described. A functional and regional approach is used to highlight principles on which the peripheral nervous system is designed. Finally, the somatic and autonomic nervous systems are contrasted to underscore similarities between the two systems.
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Affiliation(s)
- B Goldstein
- Spinal Cord Injury and Disorders Strategic Healthcare Group, Department of Veterans Affairs, Puget Sound Health Care System, Seattle, Washington, USA.
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Goldstein B. Appointment scheduling system: a vehicle for increased productivity. J Calif Dent Assoc 2001; 29:231-3. [PMID: 11324293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/16/2023]
Abstract
Operations management is the design and control of systems responsible for the productive use of human resources, equipment, and facilities in the development of a product or service. Applying those concepts to appointment scheduling can coordinate efficient use of resources. The focus of this paper is to assist the dentist and dental team in creating an appointment scheduling system that maximizes productivity and profitability.
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Affiliation(s)
- B Goldstein
- Marshall School of Business, University of Southern California, USA.
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Abstract
The serial engagement model provides an attractive and plausible explanation for how a typical antigen presenting cell, exhibiting a low density of peptides recognized by a T cell, can initiate T cell responses. If a single peptide displayed by a major histocompatibility complex (MHC) can bind, sequentially, to different T cell receptors (TCR), then a few peptides can activate many receptors. To date, arguments supporting and questioning the prevalence of serial engagement have centered on the down-regulation of TCR after contact of T cells with antigen presenting cells. Recently, the existence of serial engagement has been challenged by the demonstration that engagement of TCR can down-regulate nonengaged bystander TCR. Here we show that for binding and dissociation rates that characterize interactions between T cell receptors and peptide-MHC, substantial serial engagement occurs. The result is independent of mechanisms and measurements of receptor down-regulation. The conclusion that single peptide-MHC engage many TCR, before diffusing out of the contact region between the antigen-presenting cell and the T cell, is based on a general first passage time calculation for a particle alternating between states in which different diffusion coefficients govern its transport.
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Affiliation(s)
- C Wofsy
- Department of Mathematics and Statistics, University of New Mexico, Albuquerque, New Mexico 87131, USA
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Abstract
Researchers have suspected that initial polarization of the Caenorhabditis elegans embryo might be directed by microtubules, but demonstrating this has faced obstacles. A new study has cleverly bypassed these obstacles.
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Affiliation(s)
- B Goldstein
- Biology Department, University of North Carolina, Chapel Hill, 27599-3280, USA.
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Goldstein B. Neuroanatomical effects of attention on patients with intracranial tumors. Arch Clin Neuropsychol 2000. [DOI: 10.1016/s0887-6177(00)80128-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Goldstein B, Armstrong C. Neuroanatomical effects of attention on patients with intracranial tumors. Arch Clin Neuropsychol 2000. [DOI: 10.1093/arclin/15.8.719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Armstrong C, Faison D, Goldstein B, Jo MY, Cohen B. Longitudinal patterns of depression in patients with brain tumors. Arch Clin Neuropsychol 2000. [DOI: 10.1093/arclin/15.8.694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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