D K Klassen

Summary

Affiliation: University of Maryland
Country: USA

Publications

  1. ncbi request reprint Pancreas allograft biopsy: safety of percutaneous biopsy-results of a large experience
    David K Klassen
    Department of Medicine, University of Maryland School of Medicine, 22 S Greene Street, Baltimore, MD 21201, USA
    Transplantation 73:553-5. 2002
  2. ncbi request reprint How aggressively should blood pressure be treated in renal transplant recipients?
    D K Klassen
    Division of Nephrology, University of Maryland Medical Systems, 22 S Greene Street N3W143, Baltimore, MD 21201, USA
    Curr Hypertens Rep 2:473-7. 2000
  3. ncbi request reprint Histologic grading of acute allograft rejection in pancreas needle biopsy: correlation to serum enzymes, glycemia, and response to immunosuppressive treatment
    J C Papadimitriou
    Department of Pathology, University of Maryland School of Medicine, Baltimore 21201, USA
    Transplantation 66:1741-5. 1998
  4. ncbi request reprint Morphological spectrum of polyoma virus disease in renal allografts: diagnostic accuracy of urine cytology
    R C Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore 21201, USA
    Am J Transplant 1:373-81. 2001
  5. ncbi request reprint Cost efficiency in the prospective diagnosis and follow-up of polyomavirus allograft nephropathy
    C Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
    Transplant Proc 36:3028-31. 2004
  6. ncbi request reprint Tubular epithelial cell and podocyte apoptosis with de novo sirolimus based immunosuppression in renal allograft recipients with DGF
    R Munivenkatappa
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
    Histol Histopathol 25:189-96. 2010
  7. ncbi request reprint Long-term impact of discontinued or reduced calcineurin inhibitor in patients with chronic allograft nephropathy
    M R Weir
    Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201 1595, USA
    Kidney Int 59:1567-73. 2001
  8. ncbi request reprint Specificity of intertubular capillary changes: comparative ultrastructural studies in renal allografts and native kidneys
    C B Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore, USA
    Ultrastruct Pathol 21:227-33. 1997
  9. ncbi request reprint Early steroid withdrawal in solitary pancreas transplantation results in equivalent graft and patient survival compared with maintenance steroid therapy
    Ghazal Vessal
    School of Pharmacy, University of Maryland, Baltimore, MD, USA
    Clin Transplant 21:491-7. 2007
  10. doi request reprint Guidelines for the diagnosis of antibody-mediated rejection in pancreas allografts-updated Banff grading schema
    C B Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
    Am J Transplant 11:1792-802. 2011

Collaborators

Detail Information

Publications25

  1. ncbi request reprint Pancreas allograft biopsy: safety of percutaneous biopsy-results of a large experience
    David K Klassen
    Department of Medicine, University of Maryland School of Medicine, 22 S Greene Street, Baltimore, MD 21201, USA
    Transplantation 73:553-5. 2002
    ..The safety and success rate of the procedure with current surgical techniques is unclear. We report the complications and success rate in 426 consecutive percutaneous pancreas allograft biopsies performed at a single center...
  2. ncbi request reprint How aggressively should blood pressure be treated in renal transplant recipients?
    D K Klassen
    Division of Nephrology, University of Maryland Medical Systems, 22 S Greene Street N3W143, Baltimore, MD 21201, USA
    Curr Hypertens Rep 2:473-7. 2000
    ..Extrapolating from data from nonrenal transplant patients suggests that aggressive treatment of hypertension in renal transplant patients may improve allograft and patient survival...
  3. ncbi request reprint Histologic grading of acute allograft rejection in pancreas needle biopsy: correlation to serum enzymes, glycemia, and response to immunosuppressive treatment
    J C Papadimitriou
    Department of Pathology, University of Maryland School of Medicine, Baltimore 21201, USA
    Transplantation 66:1741-5. 1998
    ..The correlation between clinical evidence of graft dysfunction (increased serum enzymes and glucose), severity of acute rejection on biopsy (rejection grade), and response to treatment has not been previously studied...
  4. ncbi request reprint Morphological spectrum of polyoma virus disease in renal allografts: diagnostic accuracy of urine cytology
    R C Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore 21201, USA
    Am J Transplant 1:373-81. 2001
    ..We conclude that urine cytology is useful to evaluate renal transplant patients with PV reactivation because sloughed tubular cells are found in urine and positive urine samples are a consistent manifestation of PV renal involvement...
  5. ncbi request reprint Cost efficiency in the prospective diagnosis and follow-up of polyomavirus allograft nephropathy
    C Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
    Transplant Proc 36:3028-31. 2004
    ..Rationale selection of screening protocols based on the current knowledge of the infection and tailored to the available laboratory capabilities in each transplantation center can optimize the use of resources...
  6. ncbi request reprint Tubular epithelial cell and podocyte apoptosis with de novo sirolimus based immunosuppression in renal allograft recipients with DGF
    R Munivenkatappa
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
    Histol Histopathol 25:189-96. 2010
    ..007). There was no podocyte expression of activated mTOR, activated caspase-3, or Bcl-2 in either group. These data suggest that DGF patients treated with sirolimus have increased renal tubular cell apoptosis and podocyte apoptosis...
  7. ncbi request reprint Long-term impact of discontinued or reduced calcineurin inhibitor in patients with chronic allograft nephropathy
    M R Weir
    Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, Maryland 21201 1595, USA
    Kidney Int 59:1567-73. 2001
    ..Chronic allograft nephropathy is the major cause of progressive renal failure in renal transplant recipients. It has no definitive treatment...
  8. ncbi request reprint Specificity of intertubular capillary changes: comparative ultrastructural studies in renal allografts and native kidneys
    C B Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore, USA
    Ultrastruct Pathol 21:227-33. 1997
    ..This association is particularly true for cases with severe ITC abnormalities...
  9. ncbi request reprint Early steroid withdrawal in solitary pancreas transplantation results in equivalent graft and patient survival compared with maintenance steroid therapy
    Ghazal Vessal
    School of Pharmacy, University of Maryland, Baltimore, MD, USA
    Clin Transplant 21:491-7. 2007
    ..We conclude that early corticosteroid withdrawal in isolated pancreas transplantation results in fewer infections and can be achieved without an increased risk of rejection or graft loss over the first year...
  10. doi request reprint Guidelines for the diagnosis of antibody-mediated rejection in pancreas allografts-updated Banff grading schema
    C B Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
    Am J Transplant 11:1792-802. 2011
    ..A systematized clinicopathological approach to AMR is essential for the development and assessment of much needed therapeutic interventions...
  11. doi request reprint Association of serum uric acid with graft survival after kidney transplantation: a time-varying analysis
    A Haririan
    Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD, USA
    Am J Transplant 11:1943-50. 2011
    ..Its negative impact seems to be worse with lower eGFR...
  12. ncbi request reprint MIC expression in renal and pancreatic allografts
    Kim G Hankey
    Department of Pathology, University of Maryland Medical System, Baltimore, Maryland 21201, USA
    Transplantation 73:304-6. 2002
    ..In this study, we report the expression of MICA and MICB in renal and pancreatic allograft biopsies, which were obtained due to clinical signs of rejection...
  13. doi request reprint Glomerular inflammation in renal allografts biopsies after the first year: cell types and relationship with antibody-mediated rejection and graft outcome
    John C Papadimitriou
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
    Transplantation 90:1478-85. 2010
    ..The role of glomerular inflammation (GI) components in the development of TG and their impact on outcome are incompletely understood...
  14. doi request reprint The independent association between serum uric acid and graft outcomes after kidney transplantation
    Abdolreza Haririan
    Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, 22 South Greene Street, N3W143, Baltimore, MD 21201, USA
    Transplantation 89:573-9. 2010
    ..We sought to evaluate the predictive value of mean uric acid (UA) level during the first 6 months posttransplant for graft survival and function...
  15. ncbi request reprint Late calcineurin inhibitor withdrawal as a strategy to prevent graft loss in patients with suboptimal kidney transplant function
    Matthew R Weir
    Division of Nephrology, Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
    Am J Nephrol 24:379-86. 2004
    ..Its etiology is multifactorial and may include both immunologic and nonimmunologic causes. In this observational cohort study we set out to see if calcineurin inhibitor withdrawal would reduce the likelihood of graft loss...
  16. ncbi request reprint Polyomavirus reactivation in native kidneys of pancreas alone allograft recipients
    Abdolreza Haririan
    Division of Nephrology, Department of Medicine, Wayne State University, School of Medicine, Detroit, MI, USA
    Transplantation 75:1186-90. 2003
    ..There are limited data on the status of viral activity in the native kidneys of non-renal solid organ recipients...
  17. ncbi request reprint Clinical course of polyoma virus nephropathy in 67 renal transplant patients
    Emilio Ramos
    Departments of Medicine, Pathology, Pharmacy Services, and Surgery, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
    J Am Soc Nephrol 13:2145-51. 2002
    ..Although multiple factors probably play a role in the development of PVN, judicious use of immunosuppressive agents is indicated to minimize the occurrence of this infection...
  18. ncbi request reprint Histological grading of chronic pancreas allograft rejection/graft sclerosis
    John C Papadimitriou
    Department of Pathology, University of Maryland, School of Medicine, Baltimore MD, USA
    Am J Transplant 3:599-605. 2003
    ..87), substantial for Grade CII (0.61) and moderate for Grade CI (0.59). The proposed grading scheme provides a reliable and reproducible tool for the assessment of CR in percutaneous needle biopsies, with definite prognostic significance...
  19. ncbi request reprint Polyomavirus nephropathy in native kidneys of a solitary pancreas transplant recipient
    Abdolreza Haririan
    Department of Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA
    Transplantation 73:1350-3. 2002
    ..When this occurs in the renal allograft, permanent loss of allograft function can occur. Polyomavirus reactivation could potentially affect the native kidneys of nonrenal transplant recipients and cause renal dysfunction...
  20. doi request reprint Banff schema for grading pancreas allograft rejection: working proposal by a multi-disciplinary international consensus panel
    C B Drachenberg
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD, USA
    Am J Transplant 8:1237-49. 2008
    ....
  21. ncbi request reprint Improved outcome of polyoma virus allograft nephropathy with early biopsy
    C B Drachenberg
    Pathology, University of Maryland School of Medicine, Baltimore, Maryland, USA
    Transplant Proc 36:758-9. 2004
    ..Irreversible renal fibrosis due to late diagnosis is likely to be one of the important causes of treatment failure. Early biopsy in 14 patients resulted in stable graft function after a mean follow-up of 22 months...
  22. ncbi request reprint Assessment of blood pressure during naproxen therapy in hypertensive patients treated with nicardipine
    D K Klassen
    Department of Medicine, University of Maryland School of Medicine, Baltimore, USA
    Am J Hypertens 8:146-53. 1995
    ..60 and P = .071, respectively). These results indicate that despite a significant increase in body weight, the antihypertensive action of the calcium channel blocker nicardipine is not significantly affected by cotreatment with naproxen...
  23. ncbi request reprint Histologic features of mycophenolate mofetil-related colitis: a graft-versus-host disease-like pattern
    John C Papadimitriou
    Department of Pathology, University of Maryland School of Medicine, Baltimore, MD 21201, USA
    Int J Surg Pathol 11:295-302. 2003
    ..This form of injury could be related to either direct toxicity or an "innocent by-stander" phenomenon secondary to the alteration of the immunologic microenvironment of the colon caused by the MMF...
  24. pmc Relationship between patients' perceptions of disadvantage and discrimination and listing for kidney transplantation
    Ann C Klassen
    Department of Health Policy and Management, Johns Hopkins School of Public Health, Baltimore, MD 21205, USA
    Am J Public Health 92:811-7. 2002
    ..This study explored wait-listing decisions among African American and White men and women eligible for kidney transplants, focusing on lifetime experiences of race and sex discrimination as a possible influence...
  25. ncbi request reprint BK virus infection after non-renal transplantation
    Martha Pavlakis
    Beth Israel Deaconess Hospital, Boston, Massachusetts, USA
    Adv Exp Med Biol 577:185-9. 2006
    ..While much of the subsequent research focuses on patients after renal transplantation, we will review PV impact in patients after bone marrow transplant (BMT) and those with non-renal solid organ transplants...