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Qureshi MA, Maierean S, Crabtree JH, Clarke A, Armstrong S, Fissell R, Jain AK, Jassal SV, Hu SL, Kennealey P, Liebman S, McCormick B, Momciu B, Pauly RP, Pellegrino B, Perl J, Pirkle JL, Plumb TJ, Seshasai R, Shah A, Shah N, Shen J, Singh G, Tennankore K, Uribarri J, Vasilevsky M, Yang R, Quinn RR, Nadler A, Oliver MJ. The Association of Intra-Abdominal Adhesions with Peritoneal Dialysis Catheter-Related Complications. Clin J Am Soc Nephrol 2024; 19:472-482. [PMID: 38190176 PMCID: PMC11020425 DOI: 10.2215/cjn.0000000000000404] [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] [Received: 09/07/2023] [Accepted: 12/21/2023] [Indexed: 01/09/2024]
Abstract
BACKGROUND This study investigated the association of intra-abdominal adhesions with the risk of peritoneal dialysis (PD) catheter complications. METHODS Individuals undergoing laparoscopic PD catheter insertion were prospectively enrolled from eight centers in Canada and the United States. Patients were grouped based on the presence of adhesions observed during catheter insertion. The primary outcome was the composite of PD never starting, termination of PD, or the need for an invasive procedure caused by flow restriction or abdominal pain. RESULTS Seven hundred and fifty-eight individuals were enrolled, of whom 201 (27%) had adhesions during laparoscopic PD catheter insertion. The risk of the primary outcome occurred in 35 (17%) in the adhesion group compared with 58 (10%) in the no adhesion group (adjusted HR, 1.64; 95% confidence interval [CI], 1.05 to 2.55) within 6 months of insertion. Lower abdominal or pelvic adhesions had an adjusted HR of 1.80 (95% CI, 1.09 to 2.98) compared with the no adhesion group. Invasive procedures were required in 26 (13%) and 47 (8%) of the adhesion and no adhesion groups, respectively (unadjusted HR, 1.60: 95% CI, 1.04 to 2.47) within 6 months of insertion. The adjusted odds ratio for adhesions for women was 1.65 (95% CI, 1.12 to 2.41), for body mass index per 5 kg/m 2 was 1.16 (95% CI, 1.003 to 1.34), and for prior abdominal surgery was 8.34 (95% CI, 5.5 to 12.34). Common abnormalities found during invasive procedures included PD catheter tip migration, occlusion of the lumen with fibrin, omental wrapping, adherence to the bowel, and the development of new adhesions. CONCLUSIONS People with intra-abdominal adhesions undergoing PD catheter insertion were at higher risk for abdominal pain or flow restriction preventing PD from starting, PD termination, or requiring an invasive procedure. However, most patients, with or without adhesions, did not experience complications, and most complications did not lead to the termination of PD therapy.
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Affiliation(s)
- Mohammad Azfar Qureshi
- Division of Nephrology, Department of Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada
| | - Serban Maierean
- Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - John H. Crabtree
- Division of Nephrology and Hypertension, Harbor-University of California Los Angeles Medical Center, Torrance, California
| | - Alix Clarke
- Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Sean Armstrong
- College of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Rachel Fissell
- Division of Nephrology and Hypertension, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee
| | - Arsh K. Jain
- Department of Medicine, Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada
| | - Sarbjit V. Jassal
- Division of Nephrology, University Health Network, University of Toronto, Toronto, Ontario, Canada
| | - Susie L. Hu
- Department of Internal Medicine, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Peter Kennealey
- Department of Surgery, University of Colorado School of Medicine, Aurora, Colorado
| | - Scott Liebman
- Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York
| | - Brendan McCormick
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Bogdan Momciu
- Division of Nephrology, Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Robert P. Pauly
- Division of Nephrology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Beth Pellegrino
- Division of Nephrology, West Virginia University School of Medicine, Morgantown, West Virginia
| | - Jeffrey Perl
- Division of Nephrology, Division of Nephrology St. Michael's Hospital, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - James L. Pirkle
- Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Troy J. Plumb
- Division of Nephrology, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, Nebraska
| | - Rebecca Seshasai
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ankur Shah
- Department of Internal Medicine, Warren Alpert Medical School, Brown University, Providence, Rhode Island
| | - Nikhil Shah
- Faculty of Medicine, Division of Nephrology, University of Alberta, Edmonton, Alberta, Canada
| | - Jenny Shen
- The Lundquist Institute at Harbor-UCLA Medical Center, Los Angeles, California
| | | | - Karthik Tennankore
- Division of Nephrology, Department of Medicine, Dalhousie University and Nova Scotia Health, Halifax, Nova Scotia, Canada
| | - Jaime Uribarri
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Murray Vasilevsky
- Division of Nephrology, McGill University Health Centre, Montreal, Quebec, Canada
| | - Robert Yang
- Division of Nephrology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Robert R. Quinn
- Departments of Medicine and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Ashlie Nadler
- Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Matthew J. Oliver
- Department of Medicine, Division of Nephrology, University of Toronto, Toronto, Ontario, Canada
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Khan WA, Oliver M, Crabtree JH, Clarke A, Armstrong S, Fox D, Fissell R, Jain AK, Jassal SV, Hu SL, Kennealey P, Liebman S, McCormick B, Momciu B, Pauly RP, Pellegrino B, Perl J, Pirkle JL, Plumb TJ, Ravani P, Seshasai R, Shah A, Shah N, Shen J, Singh G, Tennankore K, Uribarri J, Vasilevsky M, Yang R, Quinn RR. Impact of Prior Abdominal Procedures on Peritoneal Dialysis Catheter Outcomes: Findings From the North American Peritoneal Dialysis Catheter Registry. Am J Kidney Dis 2024:S0272-6386(24)00625-5. [PMID: 38447707 DOI: 10.1053/j.ajkd.2023.12.023] [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: 08/14/2023] [Revised: 12/14/2023] [Accepted: 12/23/2023] [Indexed: 03/08/2024]
Abstract
RATIONALE & OBJECTIVE A history of prior abdominal procedures may influence the likelihood of referral for peritoneal dialysis (PD) catheter insertion. To guide clinical decision making in this population, this study examined the association between prior abdominal procedures and outcomes in patients undergoing PD catheter insertion. STUDY DESIGN Retrospective cohort study. SETTING & PARTICIPANTS Adults undergoing their first PD catheter insertion between November 1, 2011 and November 1, 2020, at 11 institutions in Canada and the US participating in the International Society for Peritoneal Dialysis (ISPD) North American Catheter Registry. EXPOSURE Prior abdominal procedure(s), defined as any procedure that enters the peritoneal cavity. OUTCOMES Primary outcome: time to the first of abandonment of the PD catheter, or interruption/termination of PD. SECONDARY OUTCOMES rates of emergency room visits, hospitalizations, and procedures. ANALYTICAL APPROACH Cumulative incidence curves were used to describe the risk over time and an adjusted Cox proportional hazards model was used to estimate the association between the exposure and primary outcome. Models for count data were used to estimate the associations between the exposure and secondary outcomes. RESULTS A total of 855 patients met the inclusion criteria. Thirty-one percent had a history of a prior abdominal procedure and 20% experienced at least one PD catheter-related complication that led to the primary outcome. Prior abdominal procedures were not associated with an increased risk of the primary outcome [Adjusted HR 1.12 (95% CI 0.68-1.84)]. Upper abdominal procedures were associated with a higher adjusted hazard of the primary outcome, but there was no dose-response relationship concerning the number of procedures. There was no association between prior abdominal procedures and other secondary outcomes. LIMITATIONS Observational study and cohort limited to sample of patients felt to be potential candidates for PD catheter insertion. CONCLUSION A history of prior abdominal procedure(s) does not appear to influence catheter outcomes following PD catheter insertion. Such a history should not be a contraindication to peritoneal dialysis.
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Affiliation(s)
- Wazaira A Khan
- Cumming School of Medicine, University of Calgary, Calgary, Canada
| | - Matthew Oliver
- Department of Medicine, Division of Nephrology, University of Toronto, Toronto, Ontario, Canada
| | - John H Crabtree
- Division of Nephrology and Hypertension, Harbor-University of California Los Angeles Medical Center, Torrance, California, USA
| | - Alix Clarke
- Cumming School of Medicine, University of Calgary, Calgary, Alberta Canada
| | - Sean Armstrong
- College of Health Sciences, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Danielle Fox
- Department of Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Rachel Fissell
- Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Arsh K Jain
- Department of Medicine, Department of Epidemiology and Biostatistics, Western University, London, Ontario, Canada
| | - Sarbjit V Jassal
- Division of Nephrology, University Health Network, Toronto, Canada and University of Toronto, Toronto, Canada
| | - Susie L Hu
- Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Peter Kennealey
- University of Colorado, School of Medicine, Denver, Colorado, USA
| | - Scott Liebman
- Department of Medicine, Division of Nephrology, University of Rochester, Rochester, New York, USA
| | - Brendan McCormick
- Division of Nephrology, Department of Medicine, University of Ottawa, Ottawa, Ontario, Canada
| | - Bogdan Momciu
- Division of Nephrology, Department of Medicine, Queen's University, Kingston, Ontario, Canada
| | - Robert P Pauly
- Division of Nephrology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Beth Pellegrino
- Division of Nephrology, West Virginia University School of Medicine, Morgantown, West Virginia, USA
| | - Jeffrey Perl
- Division of Nephrology St. Michael's Hospital, Department of Medicine, Division of Nephrology, University of Toronto, Canada
| | - James L Pirkle
- Wake Forest School of Medicine, Winston-Salem, North Carolina, USA
| | - Troy J Plumb
- Department of Internal Medicine, Division of Nephrology, University of Nebraska Medical Center, Omaha, Nebraska, USA
| | - Pietro Ravani
- Departments of Medicine and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Rebecca Seshasai
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ankur Shah
- Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Nikhil Shah
- Faculty of Medicine, Division of Nephrology, University of Alberta, Edmonton, Alberta, Canada
| | - Jenny Shen
- The Lundquist Institute at Harbor-UCLA Medical Center, Los Angeles, California, USA
| | - Gurmukteshwar Singh
- Kidney Health Research Institute, Geisinger Health, Danville, Pennsylvania, USA
| | - Karthik Tennankore
- Division of Nephrology, Department of Medicine, Dalhousie University and Nova Scotia, Health, Halifax, Nova Scotia, Canada
| | - Jaime Uribarri
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | - Robert Yang
- Division of Nephrology, Department of Medicine, McMaster University, Hamilton, Ontario, Canada
| | - Robert R Quinn
- Departments of Medicine and Community Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada.
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Lopez-Avila V, Young R, Kim R, Beckert WF, Bruce M, David P, Eckert-Tilotta S, Emery AP, Hecht C, Hedrick J, Levy J, Liebman S, McNally ME, Porter N, Pyle S, Snyder JL, Tehrani J. Interiaboratory Evaluation of an Off-Line Supercritical Fluid Extraction/Infrared Spectrometric Method for Determination of Petroleum Hydrocarbons in Solid Matrixes. J AOAC Int 2020. [DOI: 10.1093/jaoac/76.3.555] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
A collaborative study was conducted, with 14 laboratories participating, to determine the method accuracy and precision of the proposed U.S. Environmental Protection Agency Methods 3560 and 8440. These methods involve the extraction of petroleum hydrocarbons from solid matrixes with supercritical carbon dioxide at 340 atm and 80°C for 30 min (dynamic), collection of the extracted materials in tetrachloroethene (Method 3560), and analysis of the extracts by infrared (IR) spectrometry (Method 8440). The study design was based on the AOAC blind replicate design with balanced replicates. The study samples consisted of 4 solid matrixes that had petroleum hydrocarbon contents ranging from 614 to 32 600 mg/kg. Each of the 4 matrixes was extracted in triplicate, and the extracts were analyzed with 2 different IR spectrometers. In addition, each of the participating laboratories extracted a sample of unspiked clay soil, the same clay soil spiked with corn oil and reference oil at 1000 mg/kg each, and the same clay soil wetted to 30% water content and spiked with motor oil at 10 000 mg/kg (the latter 3 samples were extracted only once). Results indicated that the overall method accuracy for concentrations ranging from 614 to 32 600 mg/kg was 82.9%; the mean recoveries of petroleum hydrocarbons for each of the 4 solid matrixes ranged from 77.9 to 107% for analyses performed with the Perkin-Elmer Fourier transform IR spectrometer and from 75.9 to 101% for analyses performed with the Buck-Scientific IR spectrometer; the differences between the 2 instruments on a sample-bysample basis were less than 17% for the total petroleum hydrocarbon determinations. The interiaboratory method precisions (RSDR) appeared to be matrix-dependent and ranged from 17.3 to 45.4% for analyses performed with the Perkin- Elmer Fourier transform IR spectrometer and from 16.7 to 47.9% for the Buck-Scientific IR spectrometer. The intralaboratory method precisions (RSDr) appeared to be less matrix-dependent and ranged from 11.5 to 17.0% for analyses performed with the Perkin-Elmer FTIR spectrometer and from 11.1 to 18.2% for the Buck-Scientific IR spectrometer. Method accuracy and precision data are also presented for the 5 laboratories that used Isco supercritical fluid extraction systems and for the 7 laboratories that used vessels with volumes of 3.5 mL or less with different supercritical fluid extraction systems.
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Affiliation(s)
- Viorica Lopez-Avila
- Midwest Research Institute, California Operations, 625-B Clyde Ave, Mountain View, CA 94043
| | - Richard Young
- Midwest Research Institute, California Operations, 625-B Clyde Ave, Mountain View, CA 94043
| | - Robert Kim
- Midwest Research Institute, California Operations, 625-B Clyde Ave, Mountain View, CA 94043
| | - Werner F Beckert
- Environmental Monitoring Systems Laboratory, Quality Assurance and Methods Development Division, 944 E. Harmon Ave, Las Vegas, NV 89119
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Abstract
At our institution, we have noted that end-stage renal disease patients choosing a home dialysis modality after education often initiate renal replacement therapy with in-center hemodialysis (HD) instead. We interviewed 24 such patients (23 choosing peritoneal dialysis [PD], one choosing home HD) to determine reasons for this mismatch. The most common reasons cited for not starting home dialysis were: lack of confidence/concerns about complications, lack of space or home-related issues, a feeling of insufficient education, and perceived medical or social contraindications. We propose several potential strategies to help patients start with their preferred modality.
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Affiliation(s)
| | - Scott Liebman
- University of Rochester Medical Center, Rochester, NY
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5
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Abstract
BACKGROUND Quality of life (QOL) is an important metric of high-quality dialysis care. QOL is commonly measured by the Short Form 36 Questionnaire (SF-36), which provides two summary scores: a mental component score (MCS) and a physical component score (PCS). Poor QOL is associated with mortality in dialysis patients. Small studies show that changes in QOL also predicts mortality. We investigated whether changes in QOL over time are associated with mortality in a large cohort of maintenance hemodialysis patients. METHODS This retrospective study was conducted in 1017 outpatient dialysis facilities. Over 10,000 hemodialysis patients completed two SF-36 surveys. We compared 1-year morality rates in those whose MCS or PCS increased or decreased ±5 vs. those whose did not. RESULTS For those who completed two surveys, mean score for PCS was unchanged, whereas MCS increased slightly (48.6 vs. 48.9, p = 0.05). Individual patients, however, showed marked variation. On the second survey, more than half of patients demonstrated a ± 5 point change in the PCS and/or MCS. After multivariate adjustment, a ≥ 5 decrease in MCS was associated with an increase in mortality (HR = 1.33, 95 % CI 1.18, 1.50). CONCLUSIONS Clinicians should be aware that many patients experience a significant change in both the MCS and PCS on dialysis. A MCS decrease of ≥5 was associated with increased mortality. More study is needed to determine whether this is a causal relationship. Physicians should evaluate root causes and seek to mitigate declines in QOL whenever possible.
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Affiliation(s)
- Scott Liebman
- University of Rochester Medical Center, 601 Elmwood Ave, Box 675, Rochester, NY, 14642, USA.
| | - Nien-Chen Li
- Fresenius Medical Care North America, Waltham, MA, USA
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Dy P, Chua P, Kelly J, Liebman S. Central Diabetes Insipidus in the Setting of Acute Myelogenous Leukemia. Am J Kidney Dis 2012; 60:998-1001. [DOI: 10.1053/j.ajkd.2012.07.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Accepted: 07/13/2012] [Indexed: 11/11/2022]
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7
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Liebman S. In Reply to ‘Influence of a Predialysis Education Program on the Choice of Renal Replacement Therapy’. Am J Kidney Dis 2012. [DOI: 10.1053/j.ajkd.2012.06.013] [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: 11/11/2022]
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Block R, Kakinami L, Liebman S, Shearer GC, Kramer H, Tsai M. Cis-vaccenic acid and the Framingham risk score predict chronic kidney disease: the multi-ethnic study of atherosclerosis (MESA). Prostaglandins Leukot Essent Fatty Acids 2012; 86:175-82. [PMID: 22417701 PMCID: PMC3340522 DOI: 10.1016/j.plefa.2012.02.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2012] [Revised: 02/26/2012] [Accepted: 02/27/2012] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Data on the associations of fatty acids with chronic kidney disease (CKD) are sparse. MATERIALS AND METHODS We performed a cross-sectional study of 2792 men and women from the MESA cohort of African-American, Caucasian, Chinese and Hispanic adults without known cardiovascular disease. Plasma phospholipid fatty acid proportions were associated with estimated glomerular filtration rate (eGFR) and the albumin/creatinine ratio. RESULTS Cis-vaccenic acid (18:1n-7), adjusted for other fatty acids using multivariate logistic regression (CI: 1.0-1.4), and step-wise logistic regression (CI: 1.02-1.42), was positively associated with reduced eGFR. The Framingham Risk Score, when adjusting for fatty acid proportions and demographic factors, was positively associated with CKD as measured by the eGFR and the albumin/creatinine ratio. DISCUSSION AND CONCLUSIONS Plasma phospholipid proportions of the 18 carbon monounsaturated cis-vaccenic acid {18:1n-7}) and the Framingham Risk Score are associated with kidney function. The potential role of 18:1n-7 in the development of CKD warrants further investigation.
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Affiliation(s)
- Robert Block
- Department of Community and Preventive Medicine, Division of Epidemiology, the University of Rochester School of Medicine, Rochester, NY 14642, USA.
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Agarwal S, Gandhi M, Kashyap R, Liebman S. Spontaneous rupture of a silicone peritoneal dialysis catheter presenting outflow failure and peritonitis. Perit Dial Int 2011; 31:204-6. [PMID: 21427251 DOI: 10.3747/pdi.2010.00123] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Shaleen Agarwal
- Division of Solid Organ Transplantation, Department of Surgery, University of Rochester Rochester, New York, USA
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Navaneethan SD, Jeevanantham V, Liebman S. 182: Predictors of Late Referral after the Implementation of k-DOQI Guidelines. Am J Kidney Dis 2008. [DOI: 10.1053/j.ajkd.2008.02.191] [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: 11/11/2022]
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Jiang T, Liebman S, Gitomer W, Halaihel N, Lucia S, Levi M. 87 CALORIC RESTRICTION MODULATES AGE-RELATED RENAL DISEASE AND DECREASES RENAL LIPID ACCUMULATION AND THE EXPRESSION OF STEROL REGULATORY ELEMENT BINDING PROTEINS. J Investig Med 2004. [DOI: 10.1136/jim-52-suppl1-87] [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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Song JM, Picologlou S, Grant CM, Firoozan M, Tuite MF, Liebman S. Elongation factor EF-1 alpha gene dosage alters translational fidelity in Saccharomyces cerevisiae. Mol Cell Biol 1989; 9:4571-5. [PMID: 2685557 PMCID: PMC362547 DOI: 10.1128/mcb.9.10.4571-4575.1989] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [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: 01/02/2023] Open
Abstract
Changes in the dosage of genes encoding elongation factor EF-1 alpha were shown to cause parallel changes in the misreading of nonsense codons. Higher amounts of EF-1 alpha were correlated with increased nonsense suppression, suggesting that the level of EF-1 alpha is critically involved in translational fidelity.
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Affiliation(s)
- J M Song
- Department of Biological Sciences, University of Illinois, Chicago 60680
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Piper PW, Wasserstein M, Engbaek F, Kaltoft K, Celis JE, Zeuthen J, Liebman S, Sherman F. Nonsense suppressors of Saccharomyces cerevisiae can be generated by mutation of the tyrosine tRNA anticodon. Nature 1976; 262:757-61. [PMID: 785283 DOI: 10.1038/262757a0] [Citation(s) in RCA: 44] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Maturi VF, Liebman S, Fitzpatrick WH, Kreysa FJ. Science information centers. J Chem Educ 1966; 43:605-606. [PMID: 5980184 DOI: 10.1021/ed043p605] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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