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2 results on '"Taq polymerase"'

1. [Quantitative determination of CMV-DNA in saliva of patients with bone marrow and stem cell transplantation using TaqMan-PCR]

Author

K, Rhinow, A M, Schmidt-Westhausen, H, Ellerbrok, G, Pauli, J, Schetelig, and W, Siegert

Subjects
Adult, Male, Hematopoietic Stem Cell Transplantation, Cytomegalovirus, Middle Aged, Opportunistic Infections, Leukemia, Lymphocytic, Chronic, B-Cell, Polymerase Chain Reaction, Leukemia, Myeloid, Acute, Risk Factors, Cytomegalovirus Infections, DNA, Viral, Humans, Female, Taq Polymerase, Prospective Studies, Saliva, Bone Marrow Transplantation
Abstract

Human cytomegalovirus (HCMV) infection is associated with severe and life-threatening diseases in immunocompromised patients, especially after bone marrow (BM) and stem cell (SC) transplantation. Prior to transplantation the potential risk of HCMV disease is therefore determined by HCMV-antibody blood testing of transplant donor (D) and recipient (R). Virus carriers are positive for anti-CMV-IgG. Virus patterns are distinguished as follows: group 1 (D+/R+), group 2 (D-/R+), group 3 (D+/R-), and group 4 (D-/R-).The aim of this study was qualitative and quantitative determination of the HCMV DNA load in saliva of BM and SC transplantation patients.Unstimulated saliva was collected from 20 patients prior to BM and SC transplantation, during the time of conditioning, and after transplantation. DNA was isolated and analyzed for evidence of HCMV DNA with TaqMan PCR.HCMV DNA was isolated in seven cases. In all group 1 patients (D+/R+) HCMV DNA could be demonstrated. Only three of seven group 2 patients (D-/R+) were positive for HCMV DNA. The only group 3 patient (D+/R-) and all eight group 4 patients (D-/R-) were negative.TaqMan PCR is a reliable method for HCMV DNA quantification. In three patients (anti-HCMV-IgG positive) who received an anti-CMV-IgG negative transplant HCMV DNA was isolated. In contrast, no HCMV-DNA was evident in HCMV-negative patients who received an HCMV-negative transplant. Accordingly, the risk of HCMV reactivation is more probable than the risk of reinfection.

Published
2003

2. [Quantitative determination of CMV-DNA in saliva of patients with bone marrow and stem cell transplantation using TaqMan-PCR].

Author

Rhinow K, Schmidt-Westhausen AM, Ellerbrok H, Pauli G, Schetelig J, and Siegert W

Subjects
Adult, Cytomegalovirus Infections virology, Female, Humans, Leukemia, Lymphocytic, Chronic, B-Cell therapy, Leukemia, Myeloid, Acute therapy, Male, Middle Aged, Opportunistic Infections virology, Polymerase Chain Reaction methods, Prospective Studies, Risk Factors, Taq Polymerase, Bone Marrow Transplantation adverse effects, Cytomegalovirus genetics, Cytomegalovirus Infections diagnosis, DNA, Viral analysis, Hematopoietic Stem Cell Transplantation adverse effects, Opportunistic Infections diagnosis, Saliva virology
Abstract

Background: Human cytomegalovirus (HCMV) infection is associated with severe and life-threatening diseases in immunocompromised patients, especially after bone marrow (BM) and stem cell (SC) transplantation. Prior to transplantation the potential risk of HCMV disease is therefore determined by HCMV-antibody blood testing of transplant donor (D) and recipient (R). Virus carriers are positive for anti-CMV-IgG. Virus patterns are distinguished as follows: group 1 (D+/R+), group 2 (D-/R+), group 3 (D+/R-), and group 4 (D-/R-)., Aim: The aim of this study was qualitative and quantitative determination of the HCMV DNA load in saliva of BM and SC transplantation patients., Patients and Method: Unstimulated saliva was collected from 20 patients prior to BM and SC transplantation, during the time of conditioning, and after transplantation. DNA was isolated and analyzed for evidence of HCMV DNA with TaqMan PCR., Results: HCMV DNA was isolated in seven cases. In all group 1 patients (D+/R+) HCMV DNA could be demonstrated. Only three of seven group 2 patients (D-/R+) were positive for HCMV DNA. The only group 3 patient (D+/R-) and all eight group 4 patients (D-/R-) were negative., Conclusion: TaqMan PCR is a reliable method for HCMV DNA quantification. In three patients (anti-HCMV-IgG positive) who received an anti-CMV-IgG negative transplant HCMV DNA was isolated. In contrast, no HCMV-DNA was evident in HCMV-negative patients who received an HCMV-negative transplant. Accordingly, the risk of HCMV reactivation is more probable than the risk of reinfection.

Published
2003
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