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Saadatzadeh T, Angarone M, Stosor V. Pneumocystis jirovecii in solid organ transplant recipients: updates in epidemiology, diagnosis, treatment, and prevention. Curr Opin Infect Dis 2024; 37:121-128. [PMID: 38230604 DOI: 10.1097/qco.0000000000001002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
PURPOSE OF REVIEW This review highlights the epidemiology of Pneumocystis jirovecii pneumonia in solid organ transplant recipients, advancements in the diagnostic landscape, and updates in treatment and prevention. RECENT FINDINGS The increasing use of immune-depleting agents in the context of solid organ transplantation has given rise to P. jirovecii pneumonia in this population. The use of prophylaxis has dramatically reduced risk of infection; however, late-onset infections occur after cessation of prophylaxis and in the setting of lymphopenia, advancing patient age, acute allograft rejection, and cytomegalovirus infection. Diagnosis requires respiratory specimens, with PCR detection of Pneumocystis replacing traditional staining methods. Quantitative PCR may be a useful adjunct to differentiate between infection and colonization. Metagenomic next-generation sequencing is gaining attention as a noninvasive diagnostic tool. Trimethoprim-sulfamethoxazole remains the drug of choice for treatment and prevention of Pneumocystis pneumonia. Novel antifungal agents are under investigation. SUMMARY P. jirovecii is a fungal opportunistic pathogen that remains a cause of significant morbidity and mortality in solid organ transplant recipients. Early detection and timely treatment remain the pillars of management.
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Affiliation(s)
| | | | - Valentina Stosor
- Divisions of Infectious Diseases
- Organ Transplantation, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
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2
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Banaszak LG, Smith-Simmer K, Shoger K, Lovrien L, Malik A, Sandbo N, Sultan S, Guzy R, Lowery EM, Churpek JE. Implementation of a prospective screening strategy to identify adults with a telomere biology disorder among those undergoing lung transplant evaluation for interstitial lung disease. Respir Med 2023; 220:107464. [PMID: 37951311 DOI: 10.1016/j.rmed.2023.107464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 11/04/2023] [Accepted: 11/06/2023] [Indexed: 11/13/2023]
Abstract
INTRODUCTION Patients with interstitial lung disease (ILD) secondary to telomere biology disorders (TBD) experience increased morbidity after lung transplantation. Identifying patients with TBD may allow for personalized management to facilitate better outcomes. However, establishing a TBD diagnosis in adults is challenging. METHODS A TBD screening questionnaire was introduced prospectively into the lung transplant evaluation. Patients with ILD screening positive were referred for comprehensive TBD phenotyping and concurrent telomere length measurement and germline genetic testing. RESULTS Of 98 patients, 32 (33%) screened positive. Eight patients (8% of total; 25% of patients with a positive screen) met strict TBD diagnostic criteria, requiring either critically short lymphocyte telomeres (<1st percentile) (n = 4), a pathogenic variant in a TBD-associated gene (n = 1), or both (n = 3) along with a TBD clinical phenotype. Additional patients not meeting strict diagnostic criteria had histories consistent with TBD along with telomere lengths <10th percentile and/or rare variants in TBD-associated genes, highlighting a critical need to refine TBD diagnostic criteria for this patient population. CONCLUSION A TBD phenotype screening questionnaire in patients with ILD undergoing lung transplant evaluation has a diagnostic yield of 25%. Additional gene discovery, rare variant functional testing, and refined TBD diagnostic criteria are needed to realize the maximum benefit of testing for TBD in patients undergoing lung transplantation.
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Affiliation(s)
- Lauren G Banaszak
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA.
| | - Kelcy Smith-Simmer
- Oncology Genetics, University of Wisconsin Carbone Cancer Center, UW Health, Madison, WI, 53705, USA
| | - Kyle Shoger
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Lauren Lovrien
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Amy Malik
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Nathan Sandbo
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Samir Sultan
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Robert Guzy
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Erin M Lowery
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Jane E Churpek
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, 53705, USA.
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Lor KW, Kransdorf EP, Patel JK, Chang DH, Kobashigawa JA, Kittleson MM. Dapsone-Associated Anemia in Heart Transplant Recipients with Normal Glucose-6-Phosphate Dehydrogenase Activity. J Clin Med 2022; 11:6378. [PMID: 36362606 PMCID: PMC9658039 DOI: 10.3390/jcm11216378] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/20/2022] [Accepted: 10/26/2022] [Indexed: 03/26/2024] Open
Abstract
Dapsone is considered an alternative for pneumocystis jirovecii pneumonia (PJP) prophylaxis in sulfa-allergic or -intolerant transplant patients with normal glucose-6-phosphate dehydrogenase (G6PD) activity. Despite normal G6PD activity, anemia can still occur while on dapsone therapy. We retrospectively reviewed heart transplant patients transplanted at our center between January 2016 and June 2018 and identified those taking dapsone prophylaxis. There were 252 heart transplant recipients at our center between January 2016 and June 2018. 36 patients received dapsone prophylaxis. All had normal G6PD activity assessed prior to dapsone initiation. 8 (22%) patients developed significant anemia attributed to dapsone: 2 were hospitalized for anemia, 1 of whom required blood transfusion. These patients had a median reduction in hemoglobin of 2.1 g/dL from baseline prior to dapsone initiation. Overt evidence of hemolysis was present in six patients. Once dapsone was discontinued, Hgb increased by at least 2 g/dL in a median of 30 days. Anemia from dapsone may occur in a significant proportion of patients despite normal G6PD activity and resulting in significant morbidity. Careful monitoring of transplant recipients on dapsone prophylaxis is warranted, as well as consideration of alternative agents.
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Affiliation(s)
- Kevin W. Lor
- Department of Cardiology, Smidt Heart Institute, Cedars Sinai Medical Center, 127 S. San Vicente Blvd., Los Angeles, CA 90048, USA
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Hindka A, Huynh D, Verghese PS. Dapsone-induced methemoglobinemia in pediatrics post-renal transplant. Pediatr Transplant 2021; 25:e13921. [PMID: 33280223 DOI: 10.1111/petr.13921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2020] [Revised: 08/16/2020] [Accepted: 10/26/2020] [Indexed: 01/02/2023]
Abstract
Dapsone has been utilized for the prevention of Pneumocystis jirovecii pneumonia in immunosuppressed patients including pediatric kidney transplant recipients, in whom trimethoprim-sulfamethoxazole (TMP-SMX) is contraindicated. Dapsone adverse effects include methemoglobinemia, but there are no reports of the burden and impact of methemoglobinemia in pediatric kidney recipients that are taking dapsone for PJP prophylaxis. We conducted a retrospective chart review of all pediatric kidney recipients who had received dapsone at any time posttransplant. The indication, duration, and adverse effects of dapsone therapy were assessed. In addition, methemoglobin levels were assessed, and summary statistics performed. Data demonstrated that more than half of the patients on dapsone were not screened for methemoglobinemia. Of those screened, there was a significantly higher acquired-methemoglobinemia (77%) than previously reported in the literature. We also demonstrate significantly more anemia in patients on dapsone. Methemoglobinemia did not affect patient or graft survival and resolved with cessation of dapsone. We conclude that pediatric kidney recipients often develop methemoglobinemia and / or anemia on dapsone. We recommend if pediatric transplant recipients are prescribed dapsone, routine testing for methemoglobinemia and anemia should be done.
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Affiliation(s)
- Aditi Hindka
- Division of Nephrology, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA.,Alabama College of Osteopathic Medicine, Dothan, AL, USA
| | - Dao Huynh
- Division of Nephrology, Department of Pediatrics, University of Minnesota, Minneapolis, MN, USA
| | - Priya S Verghese
- Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA
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5
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Hedvat J, Poladi N, Salerno DM, Dube GK, Lange NW. An evaluation of PJP prophylaxis and anemia among renal transplant recipients. Transpl Infect Dis 2020; 23:e13543. [PMID: 33280205 DOI: 10.1111/tid.13543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/19/2020] [Accepted: 11/29/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND Dapone and atovaquone are therapeutic options for PJP prophylaxis in renal transplant recipients. The objective of this study was to evaluate the incidence of anemia in renal transplant recipients receiving these agents. METHODS This is an IRB-approved, retrospective analysis of adult renal transplant recipients who received either dapsone or atovaquone. The primary endpoint was the change in hemoglobin within 90 days of drug initiation. Other endpoints of interest included incidence and management of anemia at multiple time points post-transplant. Categorical variables were compared with Pearson's chi-squared or Fischer's exact test and continuous data were compared utilizing Wilcoxon rank-sum test. Statistical analyses were performed using Stata 14.2. RESULTS A total of 478 patients were screened for inclusion; 50 patients were evaluated in both the dapsone and atovaquone groups. In the dapsone and atovaquone groups, the median age was 52 and 50.5 years, 44% and 42% were Caucasian, and median time to treatment initiation was 27 and 39 days post-transplant, respectively. All patients receiving dapsone had normal G6PD function. There was no difference in baseline hemoglobin between groups (9.7 g/dL vs 9.8 g/dL, P = .83). The median nadir hemoglobin values were 8.6 g/dL and 9.6 g/dL in the dapsone and atovaquone groups, respectively (P = .047). The median decrease in hemoglobin from baseline to nadir was 1.3 g/dL in dapsone patients and 0.2 g/dL in atovaquone patients (P = .001). Dapsone was discontinued in 46% of patients, whereas atovaquone was discontinued in 18% (P = .001). CONCLUSION Among renal transplant recipients with normal G6PD activity, dapsone is associated with greater hemoglobin reductions and rates of drug discontinuation as compared to atovaquone.
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Affiliation(s)
- Jessica Hedvat
- Department of Pharmacy, NewYork-Presbyterian Hospital, New York, NY, USA
| | - Neha Poladi
- Department of Pharmacy, Wake Forest Baptist Health Comprehensive Cancer Center, Winston-Salem, NC, USA
| | - David M Salerno
- Department of Pharmacy, NewYork-Presbyterian Hospital, New York, NY, USA
| | - Geoffrey K Dube
- Division of Nephrology, Department of Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - Nicholas W Lange
- Department of Pharmacy, NewYork-Presbyterian Hospital, New York, NY, USA
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6
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Dapsone-Associated Hemolytic Anemia in Renal Transplant Recipients With Normal Glucose-6-Phosphate-Dehydrogenase Levels. Am J Ther 2020; 29:e369-e372. [PMID: 32947344 DOI: 10.1097/mjt.0000000000001252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Corallo CE, Coutsouvelis J, Morgan S, Morrissey O, Avery S. Dapsone for Pneumocystis jirovecii pneumonia prophylaxis - applying theory to clinical practice with a focus on drug interactions. Drug Metab Pers Ther 2020; 35:dmpt-2019-0018. [PMID: 32681773 DOI: 10.1515/dmpt-2019-0018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Accepted: 05/14/2020] [Indexed: 11/15/2022]
Abstract
Pneumocystis jirovecii pneumonia (PJP) is a potentially life-threatening infection that occurs in immunocompromised individuals. The incidence can be as high as 80% in some groups but can be reduced to less than 1% with appropriate prophylaxis. HIV-infected patients with a low CD4 count are at the highest risk of PJP. Others at substantial risk include haematopoietic stem cell and solid organ transplant recipients, those with cancer (particularly haematologic malignancies), and those receiving glucocorticoids, chemotherapeutic agents, and other immunosuppressive medications. Trimethoprim-sulfamethoxazole is an established first-line line agent for prevention and treatment of PJP. However, in some situations, this medication cannot be used and dapsone is considered a suitable cost-effective second line agent. However, information on potential interactions with drugs commonly used in immunosuppressed patients is lacking or contradictory. In this this article we review the metabolic pathway of dapsone with a focus on interactions and clinical significance particularly in patients with haematological malignancies. An understanding of this process should optimise the use of this agent.
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Affiliation(s)
| | | | - Susan Morgan
- Alfred Health, Haematology, Melbourne, Victoria, Australia
| | - Orla Morrissey
- Alfred Health, Infectious Diseases, Melbourne, Victoria, Australia
| | - Sharon Avery
- Alfred Health, Haematology, Melbourne, Victoria, Australia
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8
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Rogers LR, Oppelt P, Nayak L. Hemolytic anemia associated with dapsone PCP prophylaxis in GBM patients with normal G6PD activity. Neuro Oncol 2020; 22:892-893. [DOI: 10.1093/neuonc/noaa026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Lisa R Rogers
- Department of Neurology, University Hospitals Cleveland Medical Center, Cleveland, Ohio
| | - Peter Oppelt
- Washington University, St Louis Siteman Cancer Center, St Peters, Missouri
| | - Lalitha Nayak
- Seidman Cancer Center, University Hospitals Cleveland Medical Center, Cleveland, Ohio
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9
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Safdar A. Cytopenias in Transplant Patients. PRINCIPLES AND PRACTICE OF TRANSPLANT INFECTIOUS DISEASES 2019. [PMCID: PMC7120766 DOI: 10.1007/978-1-4939-9034-4_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Amar Safdar
- Clinical Associate Professor of Medicine, Texas Tech University Health Sciences Center El Paso, Paul L. Foster School of Medicine, El Paso, TX USA
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10
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Kang C, Kim DH, Kim T, Lee SH, Jeong JH, Lee SB, Kim JH, Jung MH, Lee KW, Park IS. Therapeutic effect of ascorbic acid on dapsone-induced methemoglobinemia in rats. Clin Exp Emerg Med 2018; 5:192-198. [PMID: 30269455 PMCID: PMC6166037 DOI: 10.15441/ceem.17.253] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 10/29/2017] [Indexed: 12/04/2022] Open
Abstract
Objective Dapsone (diaminodiphenyl sulfone, DDS) is currently used to treat leprosy, malaria, dermatitis herpetiformis, and other diseases. It is also used to treat pneumocystis pneumonia and Toxoplasma gondii infection in HIV-positive patients. The most common adverse effect of DDS is methemoglobinemia from oxidative stress. Ascorbic acid is an antioxidant and reducing agent that scavenges the free radicals produced by oxidative stress. The present study aimed to investigate the effect of ascorbic acid in the treatment of DDS induced methemoglobinemia. Methods Male Sprague-Dawley rats were divided into three groups: an ascorbic acid group, a methylene blue (MB) group, and a control group. After DDS (40 mg/kg) treatment via oral gavage, ascorbic acid (15 mg/kg), MB (1 mg/kg), or normal saline were administered via tail vein injection. Depending on the duration of the DDS treatment, blood methemoglobin levels, as well as the nitric oxide levels and catalase activity, were measured at 60, 120, or 180 minutes after DDS administration. Results Methemoglobin concentrations in the ascorbic acid and MB groups were significantly lower compared to those in the control group across multiple time points. The plasma nitric oxide levels and catalase activity were not different among the groups or time points. Conclusion Intravenous ascorbic acid administration is effective in treating DDS-induced methemoglobinemia in a murine model.
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Affiliation(s)
- Changwoo Kang
- Department of Emergency Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea.,Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Dong Hoon Kim
- Department of Emergency Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea.,Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Taeyun Kim
- Department of Emergency Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Soo Hoon Lee
- Department of Emergency Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea.,Institute of Health Sciences, Gyeongsang National University, Jinju, Korea
| | - Jin Hee Jeong
- Department of Emergency Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Sang Bong Lee
- Department of Emergency Medicine, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea
| | - Jin Hyun Kim
- Institute of Health Sciences, Gyeongsang National University, Jinju, Korea.,Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, Korea
| | - Myeong Hee Jung
- Biomedical Research Institute, Gyeongsang National University Hospital, Jinju, Korea
| | - Kyung-Woo Lee
- Department of Emergency Medicine, Catholic University of Daegu, Daegu, Korea
| | - In Sung Park
- Institute of Health Sciences, Gyeongsang National University, Jinju, Korea.,Department of Neurosurgery, Gyeongsang National University Hospital, Gyeongsang National University School of Medicine, Jinju, Korea
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11
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Cha YS, Kim H, Kim J, Kim OH, Kim HI, Cha K, Lee KH, Hwang SO. Incidence and patterns of hemolytic anemia in acute dapsone overdose. Am J Emerg Med 2016; 34:366-9. [DOI: 10.1016/j.ajem.2015.09.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 09/08/2015] [Accepted: 09/09/2015] [Indexed: 11/25/2022] Open
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Abouraya M, Sacco JC, Hayes K, Thomas S, Kitchens CS, Trepanier LA. Dapsone-associated methemoglobinemia in a patient with slow NAT2*5B haplotype and impaired cytochrome b5 reductase activity. J Clin Pharmacol 2015; 52:272-8. [PMID: 21422237 DOI: 10.1177/0091270010393343] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Mahmoud Abouraya
- Department of Medical Sciences, University of Wisconsin-MadisonDivision of Hematology and Oncology, College of Medicine, University of Florida, Gainesville, Florida
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13
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The role of donor chronic alcohol abuse in the development of primary graft dysfunction in lung transplant recipients. Am J Med Sci 2015; 349:117-23. [PMID: 25310510 PMCID: PMC4312500 DOI: 10.1097/maj.0000000000000361] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Primary graft dysfunction (PGD) following lung transplantation is clinically similar to the acute respiratory distress syndrome. Because alcohol abuse independently increases the incidence of acute respiratory distress syndrome in at-risk individuals, we hypothesized that donor alcohol use is correlated with an increased risk of PGD. As a pilot study, we collected alcohol use histories using a validated instrument, the Alcohol Use Disorder Identification Test questionnaire, from 74 donors and correlated these with the development of PGD in corresponding recipients. Nineteen percent (14/74) of donors were classified as heavy alcohol users, as defined by the Alcohol Use Disorder Identification Test scores ≥8. In the 1st 4 days post-transplantation, similar percentages of recipients developed grade 3 PGD on at least 1 day (heavy alcohol user = 29% [4/14] versus lighter alcohol user = 27% [16/60]); however, recipients receiving a lung from a heavy alcohol user were more likely to have multiple and consecutive days of grade 3 PGD, especially in the 1st 48 hours post-transplant. Both median length of stay in the intensive care unit and hospital were somewhat longer in the heavy alcohol user group (9 versus 7 days and 19.5 versus 17.5 days, respectively). If these preliminary findings are validated in a multi-center study, they would have important implications not only for our understanding of the pathophysiology of PGD but also for the development of novel treatments based on the evolving evidence from experimental and clinical studies on how alcohol abuse renders the lung susceptible to acute edematous injury.
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14
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Lee SM, Geetha D. Dapsone induced hemolysis in a patient with ANCA associated glomerulonephritis and normal G6PD level and implications for clinical practice: case report and review of the literature. SPRINGERPLUS 2015; 4:29. [PMID: 25628986 PMCID: PMC4305048 DOI: 10.1186/s40064-015-0816-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/25/2014] [Accepted: 01/14/2015] [Indexed: 12/05/2022]
Abstract
Dapsone is a commonly used second line drug for prophylaxis of pneumocystis jirovecii pneumonia (PJP) in immunocompromised patients. Oxidant hemolysis, caused by dapsone’s metabolite hydroxylamine, is a common side effect, and screening for glucose-6-phosphate dehydrogenase (G6PD) deficiency is recommended before the drug is started in order to prevent potential hemolytic reactions. We report a case of dapsone induced hemolytic anemia in a patient with ANCA associated glomerulonephritis and normal G6PD level. Her anemia improved after cessation of therapy with dapsone. We review the literature of dapsone induced hemolysis in patients who have normal G6PD level and discuss potential pathways leading to hemolytic anemia and its implications for clinical practice.
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Affiliation(s)
- Scott M Lee
- Division of Nephrology, Johns Hopkins University, 301 Mason Lord Drive, Baltimore, MD 21224 USA
| | - Duvuru Geetha
- Division of Nephrology, Johns Hopkins University, 301 Mason Lord Drive, Baltimore, MD 21224 USA
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15
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Mitsides N, Green D, Middleton R, New D, Lamerton E, Allen J, Redshaw J, Chadwick PR, Subudhi CPK, Wood G. Dapsone-induced methemoglobinemia in renal transplant recipients: more prevalent than previously thought. Transpl Infect Dis 2013; 16:37-43. [PMID: 24215452 DOI: 10.1111/tid.12161] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Revised: 03/01/2013] [Accepted: 04/23/2013] [Indexed: 11/29/2022]
Abstract
BACKGROUND After an outbreak of Pneumocystis pneumonia (PCP) in our nephrology unit, dapsone was used as the second-line chemoprophylactic agent. Dapsone is the most common cause of drug-induced methemoglobinemia (MHb). Its prevalence is poorly described in the renal transplant population. Because dapsone is excreted by the kidneys, we hypothesized that the rate of MHb in these patients would be higher than previously reported. We aimed to describe the demographics, risk factors, and presenting features of MHb in these renal transplant patients. METHODS Twenty-six transplant recipients commenced on dapsone for chemoprophylaxis against PCP from February to September 2011. All patients had normal glucose-6-phosphate dehydrogenase levels before treatment. Characteristics of patients with MHb were compared with those of the rest of the cohort to determine potential risk factors. RESULTS Twelve (46%) patients developed MHb (levels 6.4 ± 4.1%). Six (50%) of the patients with MHb were asymptomatic on presentation. Cases had a mean drop in hemoglobin of 19 ± 7%. MHb led to five admissions (median length of stay 5 days, range 1-10 days). MHb level showed a strong correlation with the length of stay (correlation coefficient 0.762, P = 0.002). CONCLUSION This is the highest reported prevalence of MHb, to our knowledge, in patients receiving dapsone, and its use led to significant hospitalization in this population. This study raises concerns about the use of dapsone as chemoprophylaxis in renal transplant recipients.
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Affiliation(s)
- N Mitsides
- Nephrology Department, Salford Royal NHS Foundation Trust, Salford, UK
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16
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Reindl-Schwaighofer R, Oberbauer R. Blood disorders after kidney transplantation. Transplant Rev (Orlando) 2013; 28:63-75. [PMID: 24211181 DOI: 10.1016/j.trre.2013.10.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2013] [Revised: 09/21/2013] [Accepted: 10/01/2013] [Indexed: 02/07/2023]
Abstract
Post transplant anemia (PTA) is a common issue in kidney transplant recipients. Most importantly it is associated with an impaired allograft function. Other important factors associated with PTA are immunosuppressive drugs (MPA, AZA and SRL), iron deficiency, infections (Parvo B19), older donor age, rejection episodes, an increased inflammatory state, and erythropoietin hyporesponsiveness. As there are no adequately powered RCTs in the kidney transplant population on anemia treatment with ESA, we have to rely on what we know from the large RCTs in the CKD population. The recently published KDIGO guidelines do not recommend treatment with ESA if Hb is >10 g/dl. Repletion of iron stores is emphasized. Post transplant leukopenia (PTL) and thrombocytopenia (PTT) are frequent complications especially in the first six months after kidney transplantation. Myelosuppression caused by immunosuppressive agents (MPA, AZA, SRL, rATG), antimicrobial drugs (VGCV), and CMV infection is the predominant cause. There are no widely accepted guidelines on treatment strategies, but most often dose reduction or discontinuation of causative medication is done. Most clinicians tend to decrease MPA dose, but this is eventually associated with an increase in acute rejection episodes. VGCV dose reduction (preemptive treatment instead of CMV prophylaxis) may be a successful strategy. In severe cases G-CSF treatment is an important management option and seems to be safe.
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Affiliation(s)
| | - Rainer Oberbauer
- Department of Nephrology, KH Elisabethinen, Linz, Austria; Department of Nephrology, Medical University of Vienna, Vienna, Austria.
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17
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Beardsley RM, Suhler EB, Rosenbaum JT, Lin P. Pharmacotherapy of scleritis: current paradigms and future directions. Expert Opin Pharmacother 2013; 14:411-24. [PMID: 23425055 DOI: 10.1517/14656566.2013.772982] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
INTRODUCTION Scleritis is an inflammatory condition affecting the eye wall that may be associated with a number of systemic inflammatory diseases. Because scleritis can be refractory to standard treatment, knowledge of the body of available and emerging therapies is paramount and is reviewed here. AREAS COVERED This review focuses on both traditional and emerging therapies for noninfectious scleritis. The authors cover the mechanisms of action and potential adverse effects of each of the treatment modalities. In addition, a summary of the significant MEDLINE indexed literature under the subject heading 'scleritis', 'treatment', 'immunomodulator' will be provided on each therapy, including commentary on appropriate use and relative contraindications. Novel treatments and potential drug candidates that are currently being evaluated in clinical trials with therapeutic potential will also be reviewed. EXPERT OPINION While oral nonsteroidal anti-inflammatory drugs and oral corticosteroids are widely used, effective, first-line agents for inflammatory scleritis, refractory cases require antimetabolites, T-cell inhibitors, or biologic response modifiers. In particular, there is emerging evidence for the use of targeted biologic response modifiers, and potentially, for local drug delivery.
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Affiliation(s)
- Robert M Beardsley
- Oregon Health & Science University, Casey Eye Institute, 3375 SW Terwilliger Blvd, Portland, OR 97239, USA
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Partovi S, Bruckner B, Staub D, Ortiz G, Scheinin S, Seethamraju H, Loebe M. Bloodless Lung Transplantation in Jehovah's Witnesses: Impact on Perioperative Parameters and Outcome Compared With a Matched Control Group. Transplant Proc 2013; 45:335-41. [DOI: 10.1016/j.transproceed.2012.06.057] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Accepted: 06/26/2012] [Indexed: 10/27/2022]
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Kawasumi H, Tanaka E, Hoshi D, Kawaguchi Y, Yamanaka H. Methemoglobinemia induced by trimethoprim-sulfamethoxazole in a patient with systemic lupus erythematosus. Intern Med 2013; 52:1741-3. [PMID: 23903510 DOI: 10.2169/internalmedicine.52.0247] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We herein report a case of methemoglobinemia induced by trimethoprim-sulfamethoxazole (TMP/SMX). A 41-year-old woman with systemic lupus erythematosus (SLE) received TMP/SMX for prophylaxis of pneumocystis pneumonia (PCP) on the 7th day of hospitalization. She suddenly developed dyspnea and cyanosis on the 9th day of hospitalization. The level of oxygen saturation (SaO2) decreased, and the concentration of methemoglobin (MetHb) in the blood was elevated. We diagnosed the patient with methemoglobinemia induced by TMP/SMX. Methemoglobinemia should be considered in cases of sudden dyspnea following TMP/SMX administration.
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FÖRNER WOLFGANG, BADAWI HASSANM. A DFT ANALYSIS OF THE MOLECULAR STRUCTURES AND VIBRATIONAL SPECTRA OF 4,4′-SULFONYLDIPHENOL. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2012. [DOI: 10.1142/s0219633612500563] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
We have studied the structural properties and vibrational spectra of Bisphenol S (4,4′-sulfonyldi-phenol) with the help of Density Functional Calculations using a 6-311G∗∗ basis set. In addition we recorded experimental spectra in our laboratory. With the help of the GaussView program we could provide a complete assignment of the vibrational lines to the calculated normal modes of the molecule. The calculated and experimental vibrational spectra agree rather well with each other and we found the properties of Bisphenol S to be rather similar to the sulfa drug dapsone studied earlier. Interestingly, the electron donating power of an OH aubstituent at a phenyl ring seems to be less effective than that of an NH2 (in dapsone) substituent, because in Bisphenol S the relative intensity of the ring breathing line in the Raman spectrum appears to be much larger than in dapsone. We reach this conclusion about the electron donating powers of susbtituents, because in an early study on chlorine substituted anilines we have found that the larger the electron density in the ring becomes, the more the relative intensity of that line diminishes.
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Affiliation(s)
- WOLFGANG FÖRNER
- Department of Chemistry, King Fahd University of Petroleum and Minerals Dhahran 31261, Saudi Arabia
| | - HASSAN M. BADAWI
- Department of Chemistry, King Fahd University of Petroleum and Minerals Dhahran 31261, Saudi Arabia
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Durrani K, Zakka FR, Ahmed M, Memon M, Siddique SS, Foster CS. Systemic Therapy With Conventional and Novel Immunomodulatory Agents for Ocular Inflammatory Disease. Surv Ophthalmol 2011; 56:474-510. [DOI: 10.1016/j.survophthal.2011.05.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Revised: 05/18/2011] [Accepted: 05/24/2011] [Indexed: 12/19/2022]
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Barclay JA, Ziemba SE, Ibrahim RB. Dapsone-induced methemoglobinemia: a primer for clinicians. Ann Pharmacother 2011; 45:1103-15. [PMID: 21852596 DOI: 10.1345/aph.1q139] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE To present a comprehensive review of dapsone-induced methemoglobinemia and its management. DATA SOURCES Literature retrieval was accessed through MEDLINE (1966-March 2011), Cochrane Library, and EMBASE, using the terms dapsone and methemoglobinemia. STUDY SELECTION AND DATA EXTRACTION All case reports, small case series, and randomized controlled trials published in English were evaluated. Because of the absence of comprehensive updates on this topic since 1996, publications between 1997 and March 2011 were included in this review. DATA SYNTHESIS Between 1997 and March 2011, the majority of publications describing methemoglobinemia associated with dapsone use reported this adverse effect at therapeutic doses. Excluding overdose situations, 18 described symptomatic dapsone-associated methemoglobinemia and clinical presentation ranging from cyanosis to dyspnea. In almost all of the accounts, patients had a concurrent event such as anemia or pneumonia, suggesting an interplay between these comorbidities and the onset of symptomatic methemoglobinemia. Delayed hemolytic anemia was seen in patients with high methemoglobin levels at presentation. Management in most cases consisted of administration of methylene blue. Overall, most reports described a successful outcome, and no mortality resulted from methemoglobinemia associated with therapeutic use. CONCLUSIONS Clinicians should recognize methemoglobinemia as an adverse effect associated with dapsone use and the potential factors that precipitate it. They should also know how to promptly and effectively manage this event.
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Affiliation(s)
- James A Barclay
- Department of Pharmacy Practice, Eugene Applebaum College of Pharmacy and Allied Health Professions, Wayne State University, Detroit, MI, USA.
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Yabu JM, Winkelmayer WC. Posttransplantation Anemia: Mechanisms and Management: Table 1. Clin J Am Soc Nephrol 2011; 6:1794-801. [PMID: 21734096 DOI: 10.2215/cjn.01190211] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Julie M Yabu
- Division of Nephrology, Department of Medicine, Stanford University School of Medicine, Palo Alto, California, USA
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High prevalence of Dapsone-induced oxidant hemolysis in North American SCT recipients without glucose-6-phosphate-dehydrogenase deficiency. Bone Marrow Transplant 2011; 47:399-403. [PMID: 21478917 DOI: 10.1038/bmt.2011.83] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Dapsone (4-4'-diaminodiphenylsulfone) is commonly used for Pneumocystis jirovecii pneumonia (PCP) prophylaxis in immunocompromised patients. Oxidant hemolysis is a known complication of dapsone, but its frequency in adult patients who have undergone a SCT for hematological malignancies is not well established. We studied the presence of oxidant hemolysis, by combining examination of RBC morphology and laboratory data, in 30 patients who underwent a SCT and received dapsone for PCP prophylaxis, and compared this group with 26 patients who underwent a SCT and received trimethoprim-sulfamethoxazole (TMP-SMX) for PCP prophylaxis. All patients had normal glucose-6-phosphate dehydrogenase (G6PDH) enzymatic activity. In SCT patients, dapsone compared with TMP-SMX for PCP prophylaxis was associated with a high incidence of oxidant hemolysis (87 vs 0%, P<0.001), and the morphological evaluation of oxidant hemolysis correlated well with laboratory evidence of hemolysis. Dapsone-induced oxidant hemolysis in SCT patients is 20-fold higher than the reported rate in the population of HIV-infected patients, and thus much higher than the prevalence of G6PDH variants in the general population. In our patients, it manifested clinically as a lower Hb that was not significant enough to result in increased packed RBC transfusions.
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Pelaez A, Force S, Gal A, Neujahr D, Ramirez A, Naik P, Quintero D, Pileggi A, Easley K, Echeverry R, Lawrence E, Mitchell P, Mitchell PO. Receptor for advanced glycation end products in donor lungs is associated with primary graft dysfunction after lung transplantation. Am J Transplant 2010; 10:900-907. [PMID: 20121754 PMCID: PMC2871333 DOI: 10.1111/j.1600-6143.2009.02995.x] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Development of primary graft dysfunction (PGD) is associated with poor outcomes after transplantation. We hypothesized that Receptor for Advanced Glycation End-products (RAGE) levels in donor lungs is associated with the development of PGD. Furthermore, we hypothesized that RAGE levels would be increased with PGD in recipients after transplantation. We measured RAGE in bronchoalveolar lavage fluid (BALf) from 25 donors and 34 recipients. RAGE was also detected in biopsies (transbronchial biopsy) from recipients with and without PGD. RAGE levels were significantly higher in donor lungs that subsequently developed sustained PGD versus transplanted lungs that did not display PGD. Donor RAGE level was a predictor of recipient PGD (odds ratio = 1.768 per 0.25 ng/mL increase in donor RAGE level). In addition, RAGE levels remained high for 14 days in those recipients that developed severe graft dysfunction. Recipients may be at higher risk for developing PGD if they receive transplanted organs that have higher levels of soluble RAGE prior to explantation. Moreover, the clinical and pathologic abnormalities associated with PGD posttransplantation are associated with increased RAGE expression. These findings also raise the possibility that targeting the RAGE signaling pathway could be a novel strategy for treatment and/or prevention of PGD.
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Affiliation(s)
- A. Pelaez
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA,McKelvey Center for Lung Transplantation & Pulmonary Vascular Diseases, Emory University, Atlanta, GA
| | - S.D. Force
- McKelvey Center for Lung Transplantation & Pulmonary Vascular Diseases, Emory University, Atlanta, GA,Division of Cardiothoracic Surgery, Emory University, Atlanta, GA
| | - A.A. Gal
- Department of Pathology and Laboratory Medicine, Emory University Hospital
| | - D.C. Neujahr
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA,McKelvey Center for Lung Transplantation & Pulmonary Vascular Diseases, Emory University, Atlanta, GA
| | - A.M. Ramirez
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA,McKelvey Center for Lung Transplantation & Pulmonary Vascular Diseases, Emory University, Atlanta, GA
| | - P.M. Naik
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA
| | - D.A. Quintero
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA
| | - A.V. Pileggi
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - K.A. Easley
- Department of Biostatistics and Bioinformatics, Rollins School of Public Health, Emory University, Atlanta, Georgia
| | - R. Echeverry
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA
| | - E.C. Lawrence
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA,McKelvey Center for Lung Transplantation & Pulmonary Vascular Diseases, Emory University, Atlanta, GA
| | - P.O. Mitchell
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA
| | - P O Mitchell
- Division of Pulmonary, Allergy and Critical Care Medicine, Emory University School of Medicine, Atlanta, GA
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