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Mir N, D'Amico A, Dasher J, Tolwani A, Valentine V. Understanding the andromeda strain - The role of cytokine release, coagulopathy and antithrombin III in SARS-CoV2 critical illness. Blood Rev 2021; 45:100731. [PMID: 32829961 PMCID: PMC7832361 DOI: 10.1016/j.blre.2020.100731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/12/2020] [Accepted: 06/30/2020] [Indexed: 01/08/2023]
Abstract
As the current coronavirus pandemic continues and cases of COVID-19 critical illness rise, physicians and scientists across the globe are working to understand and study its pathophysiology. Part of the pathology of this illness may result from its prothrombotic potential as witnessed from derangements in coagulation and thrombotic complications reported in observational studies performed in China and Europe to findings of microthrombosis upon autopsy analysis of patients who succumbed to COVID-19. Multiple organizations, including the American Society of Hematology (ASH), recommend the routine use of prophylactic heparin to temper the thrombotic complications of this illness given its mortality benefit in severe COVID-19 infections. Reductions in circulating levels of Antithrombin III (AT), the primary mediator of heparin's action, is present in cases of coronavirus related critical illness. AT's use as a prognostic marker, an important effector of heparin resistance, and a potential therapeutic target for COVID-19 remains to be explored.
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Affiliation(s)
- Nabiel Mir
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
| | - Alex D'Amico
- School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - John Dasher
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Ashita Tolwani
- Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Vincent Valentine
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
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Solé A, Olveira C, Pérez I, Hervás D, Valentine V, Baca Yepez AN, Olveira G, Quittner AL. Development and electronic validation of the revised Cystic Fibrosis Questionnaire (CFQ-R Teen/Adult). J Cyst Fibros 2018; 17:672-679. [DOI: 10.1016/j.jcf.2017.10.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 10/28/2017] [Accepted: 10/28/2017] [Indexed: 10/18/2022]
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Sikanderkhel S, Choudhry MW, Valentine V, Al-Dossari G, Khalife WI. Diarrhea-An uncommon presentation of tertiary adrenal insufficiency following heart transplantation. J Card Surg 2017; 32:522-525. [PMID: 28670701 DOI: 10.1111/jocs.13175] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Diarrhea following organ transplantation is usually associated with infection and immunosuppression therapy. We describe two patients with diarrhea following orthotopic heart transplantation due to tertiary adrenal insufficiency.
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Affiliation(s)
- Saad Sikanderkhel
- Division of Cardiology, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| | - M Waqas Choudhry
- Division of Cardiology, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
| | - Vincent Valentine
- Division of Pulmonary, Allergy and Critical Care Medicine, University of Alabama, Birmingham, Alabama
| | - Ghannam Al-Dossari
- Department of Cardiothoracic Surgery, University of Texas Medical Branch, Galveston, Texas
| | - Wissam I Khalife
- Division of Cardiology, Department of Internal Medicine, University of Texas Medical Branch, Galveston, Texas
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Perez I, Olveira C, Hervas D, Olveira G, Valentine V, Quittner A, Solé A. 358 Electronic validation of The Cystic Fibrosis Questionnaire Revised (CFQ-R). J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30695-1] [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: 10/19/2022]
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King CS, Valentine V, Cattamanchi A, Franco-Palacios D, Shlobin OA, Brown AW, Singh R, Bogar L, Nathan SD. Early postoperative management after lung transplantation: Results of an international survey. Clin Transplant 2017; 31. [PMID: 28425132 DOI: 10.1111/ctr.12985] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/11/2017] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Little data exist regarding optimal therapeutic strategies postoperatively after lung transplant (LTx). Current practice patterns rely on expert opinion and institutional experience resulting in nonuniform postoperative care. To better define current practice patterns, an international survey of LTx clinicians was conducted. METHODS A 30-question survey was sent to transplant clinicians via email to the International Society of Heart and Lung Transplantation open forum mailing list and directly to the chief transplant surgeon and pulmonologist of all LTx centers in the United States. RESULTS Fifty-two clinicians representing 10 countries responded to the survey. Sedatives use patterns included: opiates + propofol (57.2%), opiates + dexmedetomidine (18.4%), opiates + intermittent benzodiazepines (14.3%), opiates + continuous benzodiazepines (8.2%), and opiates alone (2%). About 40.4% reported no formal sedation scale was followed and 13.5% of programs had no formal policy on sedation and analgesia. A lung protective strategy was commonly employed, with 13.8%, 51.3%, and 35.9% of respondents using tidal volumes of <6 mL/kg ideal body weight (IBW), 6 mL/kg IBW, and 8 mL/kg IBW, respectively. CONCLUSION Practice patterns in the early postoperative care of lung transplant recipients differ considerably among centers. Many of the reported practices do not conform to consensus guidelines on management of critically ill patients.
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Affiliation(s)
- Christopher S King
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA, USA
| | - Vincent Valentine
- Division of Pulmonary, Allergy & Critical Care Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Ashok Cattamanchi
- Critical Care, Department of Medicine, UNC Rex Health Care, Raleigh, NC, USA
| | | | - Oksana A Shlobin
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA, USA
| | - A Whitney Brown
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA, USA
| | - Ramesh Singh
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA, USA
| | - Linda Bogar
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA, USA
| | - Steven D Nathan
- Advanced Lung Disease and Transplant Program, Inova Fairfax Hospital, Falls Church, VA, USA
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Martirossian A, Shah S, Carrete L, Valle J, Valentine V. Durability of Sirolimus for Lymphangioleiomyomatosis. Am J Med Sci 2016; 354:603-607. [PMID: 29208258 DOI: 10.1016/j.amjms.2016.11.028] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2016] [Revised: 11/15/2016] [Accepted: 12/02/2016] [Indexed: 10/20/2022]
Abstract
Lymphangioleiomyomatosis (LAM), a rare, multisystem disorder primarily affecting women of reproductive age, is characterized by cystic-appearing lung lesions, progressive loss of lung function, chylous effusions and renal angiomyolipomas. Sirolimus, an mammalian target of rapamycin inhibitor, has been shown to stabilize lung function, reduce symptoms and resolve chylous effusions in the short term for patients with LAM. Herein, we report a premenopausal female with LAM who experienced complete and durable resolution of her chylothoraces with significant and sustained improvement in lung function on sirolimus.
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Affiliation(s)
- Alexandra Martirossian
- Department of Internal Medicine (AM, LC), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary Critical Care & Sleep Medicine (SS, JV), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary, Allergy, & Critical Care Medicine (VV), University of Alabama at Birmingham, Birmingham, Alabama..
| | - Shiwan Shah
- Department of Internal Medicine (AM, LC), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary Critical Care & Sleep Medicine (SS, JV), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary, Allergy, & Critical Care Medicine (VV), University of Alabama at Birmingham, Birmingham, Alabama
| | - Lola Carrete
- Department of Internal Medicine (AM, LC), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary Critical Care & Sleep Medicine (SS, JV), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary, Allergy, & Critical Care Medicine (VV), University of Alabama at Birmingham, Birmingham, Alabama
| | - Jose Valle
- Department of Internal Medicine (AM, LC), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary Critical Care & Sleep Medicine (SS, JV), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary, Allergy, & Critical Care Medicine (VV), University of Alabama at Birmingham, Birmingham, Alabama
| | - Vincent Valentine
- Department of Internal Medicine (AM, LC), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary Critical Care & Sleep Medicine (SS, JV), University of Texas Medical Branch, Galveston, Texas; Department of Internal Medicine, Division of Pulmonary, Allergy, & Critical Care Medicine (VV), University of Alabama at Birmingham, Birmingham, Alabama
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Maxwell BG, Mooney JJ, Lee PHU, Levitt JE, Chhatwani L, Nicolls MR, Zamora MR, Valentine V, Weill D, Dhillon GS. Increased resource use in lung transplant admissions in the lung allocation score era. Am J Respir Crit Care Med 2015; 191:302-8. [PMID: 25517213 DOI: 10.1164/rccm.201408-1562oc] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
RATIONALE In 2005, the lung allocation score (LAS) was implemented to prioritize organ allocation to minimize waiting-list mortality and maximize 1-year survival. It resulted in transplantation of older and sicker patients without changing 1-year survival. Its effect on resource use is unknown. OBJECTIVES To determine changes in resource use over time in lung transplant admissions. METHODS Solid organ transplant recipients were identified within the Nationwide Inpatient Sample (NIS) data from 2000 to 2011. Joinpoint regression methodology was performed to identify a time point of change in mean total hospital charges among lung transplant and other solid-organ transplant recipients. Two temporal lung transplant recipient cohorts identified by joinpoint regression were compared for baseline characteristics and resource use, including total charges for index hospitalization, charges per day, length of stay, discharge disposition, tracheostomy, and need for extracorporeal membrane oxygenation. MEASUREMENTS AND MAIN RESULTS A significant point of increased total hospital charges occurred for lung transplant recipients in 2005, corresponding to LAS implementation, which was not seen in other solid-organ transplant recipients. Total transplant hospital charges increased by 40% in the post-LAS cohort ($569,942 [$53,229] vs. $407,489 [$28,360]) along with an increased median length of stay, daily charges, and discharge disposition other than to home. Post-LAS recipients also had higher post-transplant use of extracorporeal membrane oxygenation (odds ratio, 2.35; 95% confidence interval, 1.56-3.55) and higher incidence of tracheostomy (odds ratio, 1.52; 95% confidence interval, 1.22-1.89). CONCLUSIONS LAS implementation is associated with a significant increase in resource use during index hospitalization for lung transplant.
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Affiliation(s)
- Bryan G Maxwell
- 1 Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
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Maxwell BG, Levitt JE, Goldstein BA, Mooney JJ, Nicolls MR, Zamora M, Valentine V, Weill D, Dhillon GS. Impact of the lung allocation score on survival beyond 1 year. Am J Transplant 2014; 14:2288-94. [PMID: 25208599 PMCID: PMC4428280 DOI: 10.1111/ajt.12903] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [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: 02/25/2014] [Revised: 04/23/2014] [Accepted: 05/11/2014] [Indexed: 01/25/2023]
Abstract
Implementation of the lung allocation score (LAS) in 2005 led to transplantation of older and sicker patients without altering 1-year survival. However, long-term survival has not been assessed and emphasizing the 1-year survival metric may actually sustain 1-year survival while not reflecting worsening longer-term survival. Therefore, we assessed overall and conditional 1-year survival; and the effect of crossing the 1-year threshold on hazard of death in three temporal cohorts: historical (1995-2000), pre-LAS (2001-2005) and post-LAS (2005-2010). One-year survival post-LAS remained similar to pre-LAS (83.1% vs. 82.1%) and better than historical controls (75%). Overall survival in the pre- and post-LAS cohorts was also similar. However, long-term survival among patients surviving beyond 1 year was worse than pre-LAS and similar to historical controls. Also, the hazard of death increased significantly in months 13 (1.44, 95% CI 1.10-1.87) and 14 (1.43, 95% CI 1.09-1.87) post-LAS but not in the other cohorts. While implementation of the LAS has not reduced overall survival, decreased survival among patients surviving beyond 1 year in the post-LAS cohort and the increased mortality occurring immediately after 1 year suggest a potential negative long-term effect of the LAS and an unintended consequence of increased emphasis on the 1-year survival metric.
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Affiliation(s)
- B. G. Maxwell
- Department of Anesthesiology and Medicine, Stanford University School of Medicine, Stanford, CA
| | - J. E. Levitt
- Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA
| | - B. A. Goldstein
- Quantitative Sciences Unit, Stanford University School of Medicine, Stanford, CA
| | - J. J. Mooney
- Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA
| | - M. R. Nicolls
- Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA
| | - M. Zamora
- Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Health Sciences Center, Aurora, CO
| | - V. Valentine
- University of Texas Medical Branch, Galveston, TX
| | - D. Weill
- Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA
| | - G. S. Dhillon
- Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, CA,Corresponding author: Gundeep S. Dhillon,
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Lee P, Maxwell B, Levitt J, Valentine V, Sheikh A, Weill D, Dhillon G. Lung Allocation Score Increases Health Care Resource Utilization After Lung Transplantation. Chest 2013. [DOI: 10.1378/chest.1704705] [Citation(s) in RCA: 2] [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: 11/01/2022] Open
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10
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Patel S, Terasaki J, Shah S, Lombard G, James M, Beckles D, Lick S, Valentine V. Geriatric Lung Transplantation. Chest 2013. [DOI: 10.1378/chest.1704019] [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: 11/01/2022] Open
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Bhorade S, Kapila A, Valentine V, Baz M. 348 Inter-Observer Variability on Diagnosing Bronchiolitis Obliterans Syndrome. J Heart Lung Transplant 2012. [DOI: 10.1016/j.healun.2012.01.357] [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: 11/17/2022] Open
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Palmer SM, Limaye AP, Banks M, Gallup D, Chapman J, Lawrence EC, Dunitz J, Milstone A, Reynolds J, Yung GL, Chan KM, Aris R, Garrity E, Valentine V, McCall J, Chow SC, Davis RD, Avery R. Extended valganciclovir prophylaxis to prevent cytomegalovirus after lung transplantation: a randomized, controlled trial. Ann Intern Med 2010; 152:761-9. [PMID: 20547904 DOI: 10.7326/0003-4819-152-12-201006150-00003] [Citation(s) in RCA: 168] [Impact Index Per Article: 12.0] [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: 11/22/2022] Open
Abstract
BACKGROUND Cytomegalovirus (CMV) is the most prevalent opportunistic infection after lung transplantation. Current strategies do not prevent CMV in most at-risk patients. OBJECTIVE To determine whether extending prophylaxis with oral valganciclovir from the standard 3 months to 12 months after lung transplantation is efficacious. DESIGN Randomized, clinical trial. Patients were randomly assigned by a central automated system to treatment or placebo. Patients and investigators were blinded to treatment status. (ClinicalTrials.gov registration number: NCT00227370) SETTING Multicenter trial involving 11 U.S. lung transplant centers. PATIENTS 136 lung transplant recipients who completed 3 months of valganciclovir prophylaxis. INTERVENTION 9 additional months of oral valganciclovir (n = 70) or placebo (n = 66). MEASUREMENTS The primary end point was freedom from CMV disease (syndrome or tissue-invasive) on an intention-to-treat basis 300 days after randomization. Secondary end points were CMV disease severity, CMV infection, acute rejection, opportunistic infections, ganciclovir resistance, and safety. RESULTS CMV disease occurred in 32% of the short-course group versus 4% of the extended-course group (P < 0.001). Significant reductions were observed with CMV infection (64% vs. 10%; P < 0.001) and disease severity (110 000 vs. 3200 copies/mL, P = 0.009) with extended treatment. Rates of acute rejection, opportunistic infections, adverse events, CMV UL97 ganciclovir-resistance mutations, and laboratory abnormalities were similar between groups. During the 6 months after study completion, a low incidence of CMV disease was observed in both groups. LIMITATION Longer-term effects of extended prophylaxis were not assessed. CONCLUSION In adult lung transplant recipients who have received 3 months of valganciclovir, extending prophylaxis by an additional 9 months significantly reduces CMV infection, disease, and disease severity without increased ganciclovir resistance or toxicity. A beneficial effect with regard to prevention of CMV disease seems to extend at least through 18 months after transplantation.
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Affiliation(s)
- Scott M Palmer
- Duke University Medical Center and Duke Clinical Research Institute, Durham, NC, USA
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Seoane L, Alex S, Pirtle C, Gupta M, Taylor D, Valentine V, Arcement LM. SIX-MINUTE WALK RESULTS AT SIX MONTHS POST LUNG TRANSPLANTATION FOLLOW A GAUSSIAN DISTRIBUTION. Chest 2009. [DOI: 10.1378/chest.136.4_meetingabstracts.135s] [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: 11/01/2022] Open
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Seoane L, Pirtle C, Alex S, Gupta M, Taylor D, Valentine V, Arcement LM. SIX-MONTH POST LUNG TRANSPLANTATION SIX-MINUTE WALK DISTANCE DOES NOT PREDICT MORTALITY IN ADULT LUNG TRANSPLANTATION RECIPIENTS. Chest 2009. [DOI: 10.1378/chest.136.4_meetingabstracts.135s-a] [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: 11/01/2022] Open
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McShane P, Bhorade S, Baz M, Valentine V, Arcasoy S, Love R, Seethamraju H, Garrity E, Alex C, Bag R, deOliveira A, Vigneswaran W, Charbeneau J, Krishnan J, Durazo R, Ahya V. 209: Sirolimus Is Associated with an Increase Risk of Venous Thromboembolism in Lung Transplantation. J Heart Lung Transplant 2009. [DOI: 10.1016/j.healun.2008.11.839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Seoane L, Cheema M, Taylor D, Valentine V, Arcement LM. PREVALENCE AND IMPACT OF PREOPERATIVE COR PULMONALE ASCERTAINED BY 2-D ECHOCARDIOGRAPHY IN ADULT LUNG TRANSPLANT RECIPIENTS. Chest 2008. [DOI: 10.1378/chest.134.4_meetingabstracts.p46001] [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: 11/01/2022] Open
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Bhorade S, Baz M, Ahya V, Seethamraju H, Valentine V, Arcasoy S, Love R, Alex C, Vigneswaran W, Krishnan J, Charbeneau J, Garrity E. 406: Comparison of a Tacrolimus/Sirolimus/Prednisone Regimen Versus Tacrolimus/Azathioprine/Prednisone Immunosuppressive Regimen in Lung Transplantation. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.418] [Citation(s) in RCA: 3] [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: 10/22/2022] Open
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Hadjiliadis D, Valentine V, Palmer S, Curl J, Wille K. INTERACTION OF TYPE OF TRANSPLANT WITH INTRAOPERATIVE PULMONARY ARTERY PRESSURE IN PATIENTS WITH IDIOPATHIC PULMONARY FIBROSIS (IPF) UNDERGOING LUNG TRANSPLANTATION. Chest 2007. [DOI: 10.1378/chest.132.4_meetingabstracts.429b] [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: 11/01/2022] Open
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Arendt A, Echelmeyer K, Harrison W, Lingle C, Zirnheld S, Valentine V, Ritchie B, Druckenmiller M. Updated estimates of glacier volume changes in the western Chugach Mountains, Alaska, and a comparison of regional extrapolation methods. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005jf000436] [Citation(s) in RCA: 88] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Arendt
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - K. Echelmeyer
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - W. Harrison
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - C. Lingle
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - S. Zirnheld
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - V. Valentine
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - B. Ritchie
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
| | - M. Druckenmiller
- Geophysical Institute; University of Alaska Fairbanks; Fairbanks Alaska USA
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Kovarik JM, Snell GI, Valentine V, Aris R, Chan CKN, Schmidli H, Pirron U. Everolimus in Pulmonary Transplantation: Pharmacokinetics and Exposure–Response Relationships. J Heart Lung Transplant 2006; 25:440-6. [PMID: 16563975 DOI: 10.1016/j.healun.2005.12.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Revised: 11/29/2005] [Accepted: 12/10/2005] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND In this study we evaluated exposure, safety and efficacy data from an international trial of everolimus. We sought to identify a tolerated and efficacious range for blood levels of this agent in maintenance lung transplant recipients. METHODS In a randomized, double-blind, multicenter trial, 213 maintenance lung transplant recipients received either everolimus 1.5 mg twice daily (n = 101) or azathioprine 1 to 3 mg/kg/day (n = 112) with cyclosporine and corticosteroids. At 15 visits over the first 2 years of the trial, we obtained 826 everolimus trough (C0) blood samples. We used median-effect analysis to assess relationships between everolimus C0 vs efficacy and safety responses. RESULTS Everolimus administration began at 1.5 mg twice daily and was progressively lowered over the first 2 months to an average of 1.2 +/- 0.4 mg twice daily, which was maintained thereafter. This dose yielded median C0 levels of 6.6 ng/ml (10th to 90th percentiles: 2.8 to 11.8 ng/ml). Over this range of everolimus C0, freedom from a decline in pulmonary function with bronchiolitis obliterans syndrome and freedom from biopsy-proven acute rejection were both > or = 88%. The incidence of increased cholesterol (> 6.5 mmol/liter), increased triglycerides (> 2.9 mmol/liter) and transiently decreased platelet count (< 100 x 10(9)/liter) rose significantly with increasing C0. Infections and drug-related adverse events were not significantly related to exposure. CONCLUSIONS A tolerated and efficacious concentration range for everolimus in maintenance lung transplantation appears to be 3 to 12 ng/ml when used in conjunction with cyclosporine and corticosteroids. This range should be prospectively assessed with possible refinement as more clinical experience is gained.
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Bhorade S, Ahya V, Kotloff R, Baz M, Valentine V, Arcasoy S, Love R, Durazo R, Vigneswaran W, Garrity E. 376. J Heart Lung Transplant 2006. [DOI: 10.1016/j.healun.2005.11.390] [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] Open
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Abstract
A 29-year-old man with pectus excavatum presented with exercise intolerance, pulsus paradoxus, and paradoxically split S2. Chest computed tomography (CT) showed the heart shifted leftward and a pectus severity index of 7.18. Cardiopulmonary exercise study showed reduced VO2max, anaerobic threshold, and oxygen pulse. Echocardiography revealed a decline in mitral and tricuspid valve inflow, and stroke volume during inspiration. Cardiac extrinsic compression and anatomic cardiac abnormalities were not present. Dynamic magnetic resonance imaging (MRI) demonstrated inspiratory inferior vena cava (IVC) compression at the diaphragm. We discuss IVC compression by the diaphragm as a source of patient symptoms and as a mechanism for pulsus paradoxus associated with pectus excavatum.
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Affiliation(s)
- Kishore Yalamanchili
- Division of Pulmonary and Critical Care, Louisiana State University Health Science Center, New Orleans, Louisiana 70112, USA.
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Bhorade S, Ahya V, Kotloff R, Baz M, Valentine V, Arcasoy S, Love R, Vigneswaran W, Garrity E. Six month results of sirolimus versus azathioprine in a tacrolimus based immunosuppressive regimen in lung transplantation. J Heart Lung Transplant 2005. [DOI: 10.1016/j.healun.2004.11.176] [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: 11/28/2022] Open
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24
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Pühler T, Hirt S, Cremer J, Valentine V, Krauss M, Haverich A. A multicenter trial to investigate the efficacy and safety of everolimus versus Azathioprine in stable Lung Transplant Recipients (LTR) -24 months results. Thorac Cardiovasc Surg 2005. [DOI: 10.1055/s-2005-861890] [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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25
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Johnston ME, Cavatorta JR, Hopkinson CS, Valentine V. Importance of metabolism in the development of salt marsh ponds. Biol Bull 2003; 205:248-249. [PMID: 14583555 DOI: 10.2307/1543278] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Affiliation(s)
- M E Johnston
- The Pennsylvania State University, University Park, PA, USA.
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26
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Ma Z, Morris SW, Valentine V, Li M, Herbrick JA, Cui X, Bouman D, Li Y, Mehta PK, Nizetic D, Kaneko Y, Chan GC, Chan LC, Squire J, Scherer SW, Hitzler JK. Fusion of two novel genes, RBM15 and MKL1, in the t(1;22)(p13;q13) of acute megakaryoblastic leukemia. Nat Genet 2001; 28:220-1. [PMID: 11431691 DOI: 10.1038/90054] [Citation(s) in RCA: 216] [Impact Index Per Article: 9.4] [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: 11/09/2022]
Abstract
t(1;22) is the principal translocation of acute megakaryoblastic leukemias. Here we show this chromosomal rearrangement to result in the fusion of two novel genes, RNA-binding motif protein-15 (RBM15), an RNA recognition motif-encoding gene with homology to Drosophila spen, and Megakaryoblastic Leukemia-1 (MKL1), a gene encoding an SAP (SAF-A/B, Acinus and PIAS) DNA-binding domain.
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Affiliation(s)
- Z Ma
- Department of Pathology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
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27
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Smaniotto D, Luzi S, Morganti A, Fontana A, Manfrida S, Margariti A, Scambia G, Valentine V, Cellini N. 81 Role of brachytherapy or external-beam boost in combined modality therapy of locally recurrent uterine carcinoma. Radiother Oncol 2001. [DOI: 10.1016/s0167-8140(01)80087-6] [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: 10/25/2022]
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Abstract
The human CASP8 gene, whose product is also known as caspase 8 and FLICE, encodes an interleukin-1beta converting enzyme (ICE)-related cysteine protease that is activated by the engagement of several different death receptors. Caspase 8 is immediately recruited to the Fas receptor once it oligomerizes, and its protease activity is crucial for the apoptotic response generated by the resulting death-inducing signaling complex (DISC). We report here that the CASP8 gene contains at least 11 exons spanning approximately 30kb on human chromosome band 2q33-34. This region of human chromosome 2 was previously reported as the location of the CASP10 gene, whose product is closely related to caspase 8. Chromosome 2 band q33-34 is also involved in tumorigenesis, with loss of heterogeneity (LOH) being reported in a number of tumors. We also report EcoRI and HindIII polymorphisms that may prove to be useful in disease analysis. Both caspases 8 and 10 contain long pro-domains with duplicated death effector domains (DEDs), as well as their corresponding cysteine protease catalytic domains. Thus, it appears that CASP8 and CASP10 have evolved by tandem gene duplication, much like the CASP1, CASP4 and CASP5 gene cluster on human chromosome 11q22.2-22.3.
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Affiliation(s)
- J Grenet
- Department of Tumor Cell Biology, St. Jude Children's Research Hospital, Memphis TN 38101, USA
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29
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East TD, Heermann LK, Bradshaw RL, Lugo A, Sailors RM, Ershler L, Wallace CJ, Morris AH, McKinley B, Marquez A, Tonnesen A, Parmley L, Shoemaker W, Meade P, Thaut P, Hill T, Young M, Baughman J, Olterman M, Gooder V, Quinn B, Summer W, Valentine V, Carlson J, Steinberg K. Efficacy of computerized decision support for mechanical ventilation: results of a prospective multi-center randomized trial. Proc AMIA Symp 1999:251-5. [PMID: 10566359 PMCID: PMC2232746] [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: 02/14/2023] Open
Abstract
200 adult respiratory distress syndrome patients were included in a prospective multicenter randomized trial to determine the efficacy of computerized decision support. The study was done in 10 medical centers across the United States. There was no significant difference in survival between the two treatment groups (mean 2 = 0.49 p = 0.49) or in ICU length of stay between the two treatment groups when controlling for survival (F(1df) = 0.88, p = 0.37.) There was a significant reduction in morbidity as measured by multi-organ dysfunction score in the protocol group (F(1df) = 4.1, p = 0.04) as well as significantly lower incidence and severity of overdistension lung injury (F(1df) = 45.2, p < 0.001). We rejected the null hypothesis. Efficacy was best for the protocol group. Protocols were used for 32,055 hours (15 staff person years, 3.7 patient years or 1335 patient days). Protocols were active 96% of the time. 38,546 instructions were generated. 94% were followed. This study indicates that care using a computerized decision support system for ventilator management can be effectively transferred to many different clinical settings and significantly improve patient morbidity.
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Affiliation(s)
- T D East
- Department of Medical Informatics, Cottonwood Hospital, Salt Lake City, Utah 84107, USA
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30
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Ohi R, Feoktistova A, McCann S, Valentine V, Look AT, Lipsick JS, Gould KL. Myb-related Schizosaccharomyces pombe cdc5p is structurally and functionally conserved in eukaryotes. Mol Cell Biol 1998; 18:4097-108. [PMID: 9632794 PMCID: PMC108994 DOI: 10.1128/mcb.18.7.4097] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.4] [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] [Received: 01/16/1998] [Accepted: 04/10/1998] [Indexed: 02/07/2023] Open
Abstract
Schizosaccharomyces pombe cdc5p is a Myb-related protein that is essential for G2/M progression. To explore the structural and functional conservation of Cdc5 throughout evolution, we isolated Cdc5-related genes and cDNAs from Saccharomyces cerevisiae, Caenorhabditis elegans, Drosophila melanogaster, and Homo sapiens. Supporting the notion that these Cdc5 gene family members are functionally homologous to S. pombe cdc5(+), human and fly Cdc5 cDNAs are capable of complementing the temperature-sensitive lethality of the S. pombe cdc5-120 mutant. Furthermore, S. cerevisiae CEF1 (S. cerevisiae homolog of cdc5(+)), like S. pombe cdc5(+), is essential during G2/M. The location of the cdc5-120 mutation, as well as mutational analyses of Cef1p, indicate that the Myb repeats of cdc5p and Cef1p are important for their function in vivo. However, we found that unlike in c-Myb, single residue substitutions of glycines for hydrophobic residues within the Myb repeats of Cef1p, which are essential for maintaining structure of the Myb domain, did not impair Cef1p function in vivo. Rather, multiple W-to-G substitutions were required to inactivate Cef1p, and many of the substitution mutants were found to confer temperature sensitivity. Although it is possible that Cef1p acts as a transcriptional activator, we have demonstrated that Cef1p is not involved in transcriptional activation of a class of G2/M-regulated genes typified by SWI5. Collectively, these results suggest that Cdc5 family members participate in a novel pathway to regulate G2/M progression.
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Affiliation(s)
- R Ohi
- Department of Cell Biology, School of Medicine, Vanderbilt University, Nashville, Tennessee 37232, USA
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31
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Montemaggi P, Smaniotto O, Morganti A, Costamagna G, Valentine V, Mutignani M, Luzi S, Ziccarelli P, Gambacorta M, Cellini N. 112Treatment of unresectable pancreatic carcinoma by intraluminal brachytherapy in the Wirsung duct: A feasibility study. Radiother Oncol 1998. [DOI: 10.1016/s0167-8140(98)80117-5] [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: 11/17/2022]
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32
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Grenet J, Valentine V, Kitson J, Li H, Farrow SN, Kidd VJ. Duplication of the DR3 gene on human chromosome 1p36 and its deletion in human neuroblastoma. Genomics 1998; 49:385-93. [PMID: 9615223 DOI: 10.1006/geno.1998.5300] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [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: 11/22/2022]
Abstract
The human DR3 gene, whose product is also known as Wsl-1/APO-3/TRAMP/LARD, encodes a tumor necrosis factor-related receptor that is expressed primarily on the surface of thymocytes and lymphocytes. DR3 is capable of inducing both NF-kappa B activation and apoptosis when overexpressed in mammalian cells, although its ligand has not yet been identified. We report here that the DR3 gene locus is tandemly duplicated on human chromosome band 1p36.2-p36.3 and that these genes are hemizygously deleted and/or translocated to another chromosome in neuroblastoma (NB) cell lines with amplified MYCN. Duplication of at least a portion of the DR3 gene, including the extracellular and transmembrane regions but not the cytoplasmic domain, was demonstrated by both fluorescence in situ hybridization and genomic Southern blotting. In most NB cell lines, both the DR3 and the DR3L sequences are simultaneously deleted and/or translocated to another chromosome. Finally, DR3/ Wsl-1 protein expression is quite variable among these NB cell lines, with very low or undetectable levels in 7 of 17 NB cell lines.
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Affiliation(s)
- J Grenet
- Department of Tumor Cell Biology, St. Jude Children's Research Hospital, Memphis, Tennessee 38101, USA
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33
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Leung AN, Fisher K, Valentine V, Girgis RE, Berry GJ, Robbins RC, Theodore J. Bronchiolitis obliterans after lung transplantation: detection using expiratory HRCT. Chest 1998; 113:365-70. [PMID: 9498953 DOI: 10.1378/chest.113.2.365] [Citation(s) in RCA: 114] [Impact Index Per Article: 4.4] [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: 11/01/2022] Open
Abstract
OBJECTIVE The objective of this study was to determine if air trapping, as detected on expiratory high-resolution CT (HRCT), is useful as an indicator of bronchiolitis obliterans (BO) in lung transplant recipients. MATERIALS AND METHODS Corresponding inspiratory and expiratory HRCT images at five different levels and spirometry were obtained in 21 lung transplant recipients. Eleven patients had BO proved by transbronchial biopsy specimens; the remaining 10 patients had no pathologic or functional evidence of airways disease. Two "blinded" observers assessed the inspiratory images for the presence of bronchiectasis and mosaic pattern of lung attenuation, and the expiratory images for presence and extent of air trapping. Statistical comparison of the frequency of HRCT findings between patients with and without BO was performed using Fisher's Exact Test. RESULTS On inspiratory images, bronchiectasis and mosaic pattern of lung attenuation were present in 4 (36%) and 7 (64%) of 11 patients with BO, and 2 (20%) and 1 (10%) of 10 patients without BO (p>0.05 and p<0.05), respectively. The sensitivity, specificity, and accuracy of bronchiectasis and mosaic pattern for BO were 36%, 80%, and 57%, and 64%, 90%, and 70%, respectively. On expiratory images, air trapping was found in 10 of 11 (91%) patients with BO compared to 2 of 10 (20%) patients without BO (p<0.002). Air trapping was found to have a sensitivity of 91%, specificity of 80%, and accuracy of 86% for BO. Air trapping was identified in one patient with BO who had normal results of baseline spirometric function tests. CONCLUSION Air trapping, as detected on expiratory HRCT, was the most sensitive and accurate radiologic indicator of BO in the lung transplant population.
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Affiliation(s)
- A N Leung
- Department of Radiology, Stanford University Medical Center, Calif 94305-5105, USA
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34
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Abstract
Studies of Drosophila photoreceptor development have illustrated the means by which signal transduction events regulate cell fate decisions in a multicellular organization. Development of the R7 photoreceptor is best understood, and its formation is dependent on the seven in absentia (sina) gene. We have characterized two highly conserved human homologs of sina, termed SIAH1 and SIAH2. SIAH1 maps to chromosome 16q12 and encodes a 282-amino-acid protein with 76% amino acid identity to the Drosophila SINA protein. SIAH2 maps to chromosome 3q25 and encodes a 324-amino-acid protein that shares 68% identity with Drosophila SINA and 77% identity with human SIAH1. SIAH1 and SIAH2 were expressed in many normal and neoplastic tissues, and only subtle differences in their expression were noted. However, one of three murine homologs, Siah1B, was strongly induced in fibroblasts undergoing apoptotic cell death. While a previous study suggested that SINA was a nuclear protein, epitope-tagged SINA and SIAH1 proteins were found in the cytoplasm of Drosophila and mammalian cells. Their substantial evolutionary conservation, role in specifying cell fate, and activation in apoptotic cells suggest the SIAH proteins have important roles in vertebrate development. Furthermore, given the role of sina in Drosophila photoreceptor development, SIAH2 is a candidate for the Usher syndrome type 3 gene at chromosome 3q21-q25.
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Affiliation(s)
- G Hu
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor 48109, USA
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35
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Fornerod M, van Baal S, Valentine V, Shapiro DN, Grosveld G. Chromosomal localization of genes encoding CAN/Nup214-interacting proteins--human CRM1 localizes to 2p16, whereas Nup88 localizes to 17p13 and is physically linked to SF2p32. Genomics 1997; 42:538-40. [PMID: 9205132 DOI: 10.1006/geno.1997.4767] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- M Fornerod
- Department of Genetics, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA
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36
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Zhao Y, Loyer P, Li H, Valentine V, Kidd V, Kraft AS. Cloning and chromosomal location of a novel member of the myotonic dystrophy family of protein kinases. J Biol Chem 1997; 272:10013-20. [PMID: 9092543 DOI: 10.1074/jbc.272.15.10013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [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: 02/04/2023] Open
Abstract
We have cloned a novel serine/threonine protein kinase (PK428) which is highly related (65%) within the kinase domain to the myotonic dystrophy protein kinase (DM-PK), as well as the cyclic AMP-dependent protein kinase (33%). Northern blots demonstrate that PK428 mRNA is distributed widely among tissues and is expressed at the highest levels in pancreas, heart, and skeletal muscle, with lower levels in liver and lung. Two PK428 mRNAs 10 and 3.8 kilobase pairs in size are seen in a number of cell lines, including hematopoietic and breast cancer cells. An antibody generated to a glutathione S-transferase-PK428 fusion protein detects a 65-kDa protein in these cell lines, and a similarly sized protein when the cloned cDNA is transiently expressed in Cos 7 cells. Immunoprecipitation of the transiently expressed PK428 protein and incubation with [gamma-32P]ATP demonstrate that it is capable of autophosphorylation. In addition, immunoprecipitates of the PK428 protein kinase also phosphorylated histone H1 and a peptide encoding a cyclic AMP-dependent protein kinase substrate. The gene corresponding to the 3.8-kb PK428 mRNA, and its corresponding 65-kDa protein, was isolated by polymerase chain reaction screening of a P1 phage human genomic library. Using this P1 phage clone as a probe, the PK428 gene was located on 1q41-42, a possible location for a human senescence gene, a gene associated with Rippling muscle disease, as well as a region associated with genetically acquired mental retardation.
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Affiliation(s)
- Y Zhao
- Division of Medical Oncology, University of University of Colorado Health Sciences Center, Denver, Colorado 802621, USA
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37
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Mathew P, Sanger WG, Weisenburger DD, Valentine M, Valentine V, Pickering D, Higgins C, Hess M, Cui X, Srivastava DK, Morris SW. Detection of the t(2;5)(p23;q35) and NPM-ALK fusion in non-Hodgkin's lymphoma by two-color fluorescence in situ hybridization. Blood 1997; 89:1678-85. [PMID: 9057650] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The non-Hodgkin's lymphoma (NHL) subset commonly referred to as large cell lymphoma (LCL) has historically been characterized by it's marked cytological, immunological, and clinical heterogeneity. One potential defining feature of these lymphomas, the t(2;5)(p23;q35), occurs in 25% to 30% of anaplastic LCLs and is also found in cases with diffuse large cell or immunoblastic morphology. We recently identified nucleophosmin (NPM) and anaplastic lymphoma kinase (ALK) as the genes on chromosomes 5 and 2, respectively, that are juxtaposed by this translocation. To provide a complementary approach to the use of classical cytogenetics or polymerase chain reaction-based methods for the detection of this abnormality, we have developed a two-color fluorescent in situ hybridization (FISH) assay for the t(2;5) that may be used for the analysis of both interphase nuclei and metaphase chromosomes. Three overlapping chromosome 5 cosmid clones located immediately centromeric to the NPM gene locus and an ALK P1 clone located telomeric to the chromosome 2 breakpoint were labeled with digoxigenin or biotin, respectively, and used to visualize the derivative chromosome 5 produced by the t(2;5), evident as juxtaposed or overlapping red and green fluorescent signals. This NPM-ALK FISH assay was initially validated by analysis of a series of cytogenetically characterized cell lines, with the presence of the der(5) chromosome showed specifically only in those lines known to contain the t(2;5). The assay was then applied in a blinded fashion to a series of eight cytogenetically t(2;5)-positive clinical specimens and seven known t(2;5)-negative cases, including three NHL and four Hodgkin's disease biopsy samples. Whereas the t(2;5)-negative cases were negative by FISH, all eight t(2;5)-positive cases were positive. One additional case, initially thought to be positive for the translocation by cytogenetics, was proven to not be a classic t(2;5) by interphase and metaphase FISH. These data indicate that the FISH assay described is a highly specific and rapid test that should prove to be a useful adjunct to the currently available methods for detection of the t(2;5).
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Affiliation(s)
- P Mathew
- Department of Pediatrics, Medical College of Ohio, Toledo, USA
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38
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Cerretti DP, Copeland NG, Gilbert DJ, Jenkins NA, Kuefer MU, Valentine V, Shapiro DN, Cui X, Morris SW. The gene encoding LERK-7 (EPLG7, Epl7), a ligand for the Eph-related receptor tyrosine kinases, maps to human chromosome 5 at band q21 and to mouse chromosome 17. Genomics 1996; 35:376-9. [PMID: 8661153 DOI: 10.1006/geno.1996.0371] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 02/01/2023]
Abstract
The eph-related receptors are the largest subfamily of receptor tyrosine kinases. Recently, we and others have identified seven different, but related, cDNAs encoding membrane-bound ligands for this family of receptors. One member, LERK-7, is attached to the cell membrane via glycosyl-phosphatidylinositol linkage and has been found to be a ligand for the eph-family receptors hek, elk, eck, and rek. Using PCR-based screening of human x rodent somatic cell hybrid DNAs, we have assigned the gene that encodes LERK-7 (EPLG7) to human chromosome 5. Fluorescence in situ hybridization to metaphase chromosome preparations using a genomic clone from the locus refined this localization to chromosome 5, band q21. In addition, Southern blot analysis of DNAs from interspecific backcross mice indicated that the mouse homologue Epl7 maps to a homologous region on chromosome 17.
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Affiliation(s)
- D P Cerretti
- Department of Molecular Biology, Immunex Corporation, Seattle, Washington, 98101, USA.
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39
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Kuefer MU, Look AT, Williams DC, Valentine V, Naeve CW, Behm FG, Mullersman JE, Yoneda-Kato N, Montgomery K, Kucherlapati R, Morris SW. cDNA cloning, tissue distribution, and chromosomal localization of myelodysplasia/myeloid leukemia factor 2 (MLF2). Genomics 1996; 35:392-6. [PMID: 8661158 DOI: 10.1006/geno.1996.0376] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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: 02/01/2023]
Abstract
A fusion gene between nucleophosmin (NPM) and myelodysplasia/myeloid leukemia factor 1 (MLF1) is formed by a recurrent t(3;5)(q25.1;q34) in myelodysplastic syndrome and acute myeloid leukemia. Here we report the identification of a novel gene, MLF2, which contains an open reading frame of 744 bp encoding a 248-amino-acid protein highly related to the previously identified MLF1 protein (63% similarity, 40% identity). In contrast to the tissue-restricted expression pattern of MLF1, the MLF2 messenger RNA is expressed ubiquitously. The MLF2 gene locus was mapped by fluorescence in situ hybridization to human chromosome 12p13, a chromosomal region frequently involved in translocations and deletions in acute leukemias of lymphoid or myeloid lineage. In a physical map of chromosome 12, MLF2 was found to reside on the yeast artificial chromosome clone 765b9. Southern blotting analysis of malignant cell DNAs prepared from a series of acute lymphoblastic leukemia cases with translocations involving chromosome arm 12p, as well as a group of acute myeloid leukemias with various cytogenetic abnormalities, failed to reveal MLF2 gene rearrangements.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Cell Cycle Proteins
- Chromosome Aberrations
- Chromosome Disorders
- Chromosome Mapping
- Chromosomes, Human, Pair 12
- Chromosomes, Human, Pair 3
- Chromosomes, Human, Pair 5
- Cloning, Molecular
- DNA, Complementary
- DNA-Binding Proteins
- Gene Expression
- Humans
- In Situ Hybridization, Fluorescence
- Leukemia, Myeloid/genetics
- Molecular Sequence Data
- Multigene Family
- Neoplasms/genetics
- Nuclear Proteins/genetics
- Nucleophosmin
- Open Reading Frames
- Organ Specificity
- Protein Biosynthesis
- Proteins/chemistry
- RNA, Messenger/biosynthesis
- Sequence Homology, Amino Acid
- Translocation, Genetic
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Affiliation(s)
- M U Kuefer
- Department of Experimental Oncology,, St. Jude Children's Research Hospital, Memphis, Tennessee, 38101, USA
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40
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Abstract
The der(16)t(1;16)(q21;q13) chromosomal abnormality has been reported rarely in Wilms' tumor. This abnormality has also been found in several other pediatric and adult neoplasms, and may imply a poor prognosis in at least some of these solid tumors. To investigate its clinical significance in Wilms' tumor, we examined the records of 65 consecutive children with Wilms' tumor whose tumor cells were successfully karyotyped. The t(1;16) was present in seven patients (10%) whose ages ranged from 2.5 to 4.7 years (median 3.5 years) at diagnosis. Six of the seven patients were female. All four stages of Wilms' tumor were represented (two patients had stage IV disease). No patient had bilateral disease. All tumors were of "favorable histology." All seven patients are alive and off therapy with a median follow-up of 3.2 years (range, 2 to 8.5 years). One patient with this abnormality developed brain metastases within 4 months of completion of therapy. Comparison of these patients with the remaining 58 Wilms' tumor patients revealed no significant differences with regard to disease stage, histology, survival, or relapse-free survival. Cytogenetic evidence of der(16)t(1;16)(q21;q13) in Wilms' tumor does not appear to portend an adverse clinical outcome, although only a larger study that includes molecular detection methods can provide more conclusive evidence.
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Affiliation(s)
- P Mathew
- Department of Experimental Oncology, St. Jude Children's Research Hospital, Memphis, TN 38105, USA
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41
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Duncan SR, Valentine V, Roglic M, Elias DJ, Pekny KW, Theodore J, Kono DH, Theofilopoulos AN. T cell receptor biases and clonal proliferations among lung transplant recipients with obliterative bronchiolitis. J Clin Invest 1996; 97:2642-50. [PMID: 8647959 PMCID: PMC507352 DOI: 10.1172/jci118714] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [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: 02/01/2023] Open
Abstract
Obliterative bronchiolitis (OB) is the most serious late complication of lung transplantation, but the pathogenesis of this disorder has not been elucidated. We sought evidence that OB is mediated by a cellular immunologic response by characterizing T cell antigen receptor beta-chain variable gene (TCRBV) repertoires in lung allograft recipients. Expression levels of 27 TCRBV among recipients were determined by multiprobe RNase protection assay after PCR amplification. In comparison to recipients with no evidence of rejection (n = 9), the PBL TCRBV repertoires of OB subjects (n = 16) exhibited more frequent expansions (16 vs. 9% of all measured TCRBV, P < 0.02), and the magnitudes of these abnormalities were greater (8.2 +/- 0.8 vs. 4.5 +/- 0.3 SD from mean normal values, P < 0.01). TCRBV sequencing showed these expansions were composed of clonal or oligoclonal populations. Thus, T cell responses in the recipients are marked by highly selective clonal expansions, presumably driven by indirect recognition of a limited number of immunodominant alloantigens. These processes are exaggerated among allograft recipients with OB, implying that cognate immune mechanisms are important in the pathogenesis of the disorder. Furthermore, the prominence of finite, distinct TCR phenotypes raise possibilities for development of novel diagnostic modalities and targeted immunotherapies for OB and other manifestations of chronic allograft rejection.
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Affiliation(s)
- S R Duncan
- Department of Immunology, Scripps Research Institue, La Jolla, California 92037, USA
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Cerretti DP, Lyman SD, Kozlosky CJ, Copeland NG, Gilbert DJ, Jenkins NA, Valentine V, Kirstein MN, Shapiro DN, Morris SW. The genes encoding the eph-related receptor tyrosine kinase ligands LERK-1 (EPLG1, Epl1), LERK-3 (EPLG3, Epl3), and LERK-4 (EPLG4, Epl4) are clustered on human chromosome 1 and mouse chromosome 3. Genomics 1996; 33:277-82. [PMID: 8660976 DOI: 10.1006/geno.1996.0192] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [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: 02/01/2023]
Abstract
Hek and elk are members of the eph-related family of receptor tyrosine kinases. Recently, we isolated five cDNAs encoding membrane-bound ligands to hek and elk. Because of the promiscuous nature of their binding, we have termed these proteins ligands of the eph-related kinases or LERKs. The LERKs can be divided into two subgroups by virtue of their sequence identity, binding properties, and mode of cell membrane attachment. For example, LERK-2 (EPLG2, Epl2) and LERK-5 (EPLG5, Epl5) are type 1 transmembrane proteins, while LERK-1 (EPLG1, Epl1), LERK-3 (EPLG3, Epl3), and LERK-4 (EPLG4, Epl4) are anchored to the membrane by glycosyl-phosphatidylinositol (GPI) linkage. Using Southern hybridization analysis of human x rodent somatic cell hybrid DNAs, we have assigned the genes that encode the GPI-anchored LERKs (EPLG1, EPLG3, and EPLG4) to human chromosome 1. Fluorescence in situ hybridization to metaphase chromosome preparations using genomic clones from each locus refined this localization to chromosome 1, bands q21-q22. In addition, Southern blot analysis of DNA from interspecific backcross mice indicated that the mouse homologues Epl1, Epl3, and Epl4 map to a homologous region on mouse chromosome 3.
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Affiliation(s)
- D P Cerretti
- Immunex Corporation, Seattle, Washington 98101, USA
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Bram RJ, Valentine V, Shapiro DN, Jenkins NA, Gilbert DJ, Copeland NG. The gene for calcium-modulating cyclophilin ligand (CAMLG) is located on human chromosome 5q23 and a syntenic region of mouse chromosome 13. Genomics 1996; 31:257-60. [PMID: 8824814 DOI: 10.1006/geno.1996.0044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 02/02/2023]
Abstract
The CAMLG gene encodes a novel cyclophilin B-binding protein called calcium-modulating cyclophilin ligand, which appears to be involved in the regulation of calcium signaling in T lymphocytes and other cells. The murine homolog, Caml, was localized by interspecific backcross analysis to the middle of chromosome 13. By fluorescence in situ hybridization, this gene was localized to human chromosome 5 in a region (q23) known to be syntenic to mouse chromosome 13. These results provide further evidence supporting the extensive homology between human chromosome 5q and mouse chromosome 13. In addition, the results will provide a basis for further evaluation of cytogenetic anomalies that may contribute to inherited defects in calcium signaling or immune system function.
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Affiliation(s)
- R J Bram
- Department of Experimental Oncology, St Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.
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Reichenspurner H, Girgis RE, Robbins RC, Conte JV, Nair RV, Valentine V, Berry GJ, Morris RE, Theodore J, Reitz BA. Obliterative bronchiolitis after lung and heart-lung transplantation. Ann Thorac Surg 1995; 60:1845-53. [PMID: 8787504 DOI: 10.1016/0003-4975(95)00776-8] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Obliterative bronchiolitis (OB) has emerged as the main cause of morbidity and mortality in the long-term follow-up after lung and heart-lung transplantation. The pathogenesis of OB is multifactorial, with acute rejection and cytomegalovirus infection being the main risk factors for the development of OB. The final common pathway of all inciting events seems to be an alloimmune injury, with subsequent release of immunologic mediators and production of growth factors leading to luminal obliteration and fibrous scarring of the small airways. Analyzing the 14 years of experience in 163 patients at Stanford University, we found a current incidence of bronchiolitis obliterans syndrome or histologically proven OB within the first 3 years after lung and heart-lung transplantation of 36.3%, with an overall prevalence of 58.1% after heart-lung and 51.4% after lung transplantation. Both pulmonary function indices (forced expiratory flow between 25% and 75% of forced vital capacity and forced expiratory volume in 1 second) and transbronchial biopsies have proven helpful in diagnosing bronchiolitis obliterans syndrome or OB at an early stage. Early diagnosis of OB and improved management have achieved survival rates in patients with OB after 1, 3, 5, and 10 years of 83%, 66%, 46%, and 22%, compared with 86%, 83%, 67%, and 67% in patients without OB. Recently, different experimental models have been developed to investigate the cellular and molecular events leading to OB and to evaluate new treatment strategies for this complication, which currently limits the long-term success of heart-lung and lung transplantation.
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Affiliation(s)
- H Reichenspurner
- Department of Cardiothoracic Surgery, Stanford University School of Medicine, California 94305-5247, USA
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Biegel JA, Nycum LM, Valentine V, Barr FG, Shapiro DN. Detection of the t(2;13)(q35;q14) and PAX3-FKHR fusion in alveolar rhabdomyosarcoma by fluorescence in situ hybridization. Genes Chromosomes Cancer 1995; 12:186-92. [PMID: 7536457 DOI: 10.1002/gcc.2870120305] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.1] [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: 01/25/2023] Open
Abstract
Cytogenetic studies of the pediatric solid tumor alveolar rhabdomyosarcoma have demonstrated the presence of a consistent chromosomal translocation, t(2;13)(q35;q14). We recently identified PAX3 and FKHR as the genes on chromosomes 2 and 13, respectively, that are juxtaposed by this translocation. As one means of detecting the t(2;13) translocation in clinical specimens, we have developed a fluorescence in situ hybridization (FISH) assay that may be used for both interphase and metaphase cells. Translocation of the 5' region of the FKHR gene to the derivative chromosome 2, and retention of the 3' region of FKHR on the derivative chromosome 13 [(der(13)], were demonstrated in metaphase cells from a rhabdomyosarcoma cell line with a previously identified t(2;13) translocation. A 5' PAX3 cosmid probe was shown to localize to 2q35 in normal cells, and to translocate to the der(13) in the rhabdomyosarcoma cell line. In order to detect the der(13) in interphase nuclei, we labeled the 3'FKHR and the 5'PAX3 cosmid probes with digoxigenin and biotin, respectively, and used these in a two-color FISH assay. The presence of the der(13) was visualized as juxtaposed or overlapping red and green signals in metaphase and interphase tumor cells. The PAX3-FKHR FISH assay was then applied to a series of cytogenetically characterized pediatric sarcoma cell lines. The presence of the der(13) was demonstrated by FISH in all cases containing a cytogenetically detectable t(2;13). The FISH assay was then applied to a series of 20 embryonal and alveolar rhabdomyosarcoma samples. All 10 of the alveolar rhabdomyosarcoma specimens demonstrated a der(13) with the FISH assay.(ABSTRACT TRUNCATED AT 250 WORDS)
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MESH Headings
- Chromosome Mapping
- Chromosomes, Human, Pair 13
- Chromosomes, Human, Pair 2
- Humans
- In Situ Hybridization, Fluorescence
- Karyotyping
- Rhabdomyosarcoma, Alveolar/genetics
- Rhabdomyosarcoma, Embryonal/genetics
- Sarcoma, Ewing/genetics
- Translocation, Genetic
- Tumor Cells, Cultured
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Affiliation(s)
- J A Biegel
- Division of Human Genetics and Molecular Biology, Children's Hospital of Philadelphia, PA 19104, USA
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Anderson DM, Johnson L, Glaccum MB, Copeland NG, Gilbert DJ, Jenkins NA, Valentine V, Kirstein MN, Shapiro DN, Morris SW. Chromosomal assignment and genomic structure of Il15. Genomics 1995; 25:701-6. [PMID: 7759105 DOI: 10.1016/0888-7543(95)80013-c] [Citation(s) in RCA: 80] [Impact Index Per Article: 2.8] [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: 01/27/2023]
Abstract
Interleukin-15 (IL-15) is a novel cytokine whose effects on T-cell activation and proliferation are similar to those of interleukin-2 (IL-2), presumably because IL-15 utilizes the beta and gamma chains of the IL-2 receptor. Murine IL-15 cDNA and genomic clones were isolated and characterized. The murine Il15 gene was found to consist of eight exons spanning at least 34 kb and was localized to the central region of mouse chromosome 8 by interspecific backcross analysis. Intron positions in a partial human IL15 genomic clone were identical with positions of corresponding introns in the murine gene. The human IL15 gene was mapped to human chromosome 4q31 by fluorescence in situ hybridization.
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Affiliation(s)
- D M Anderson
- Immunex Research and Development Corporation, Seattle, Washington 98101, USA
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Abstract
MAD and MXI1, two recently described members of the basic helix-loop-helix (bHLH) gene family, encode proteins that dimerize with and modulate the DNA binding of max. In turn, mad-max or mxi1-max heterodimers or max homodimers can compete for DNA binding sites with dimers formed between max and myc oncoproteins and antagonize the transcriptional activities of this latter class of proteins. Using a combination of somatic cell mapping and fluorescence in situ hybridization techniques, we have determined the chromosomal locations of the MAD and MXI1 genes. The MAD gene maps to chromosome 2p12-p13, a region involved in translocations and deletions in acute and chronic lymphocytic leukemias as well as non-lymphocytic leukemias and Hodgkin disease. The MXI1 gene localizes to chromosome 10q24-q25, a region involved in translocations and deletions in acute and chronic lymphocytic leukemias and prostatic carcinomas. The availability of genomic clones of MAD and MXI1 will permit an assessment of their involvement in these diseases at the molecular level.
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Affiliation(s)
- D N Shapiro
- Department of Experimental Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee 38101
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Giordano BP, Valentine V. Confessions from two experts: an experienced educator; educating mother. Diabetes Educ 1985; 11 Suppl:57-8. [PMID: 3912143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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