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T-cell receptor gamma and delta rearrangements in T-cell acute lymphoblastic leukemia in Indian patients

In Leukemia and Lymphoma
By: Khode J.
Contributor(s): Chiplunkar SV | Advani SH | .
Material type: materialTypeLabelArticleSeries: Vol 36 Issues 3-4.Publisher: 2000Description: 331-338.Subject(s): LeukemiaDDC classification: 616.155 In: Leukemia and LymphomaSummary: T-cell acute lymphoblastic leukemia (T-ALL) is a clonal lymphoid malignancy and junctional sequences of rearranged T-cell receptor (TCR) represent the best suitable marker to study clonality in these patients. A sensitive, non-radioactive, and rapid approach of PCR coupled with heteroduplex analysis was used to analyse clonality of TCR gamma and delta gene rearrangements in 26 Indian T-ALL patients. Amongst TCR gamma gene family, VgammaI-Jgamma1.3/2.3 sequences were most utilized (53.9%) while from TCRdelta repertoire Vdelta1-Jdelta1 sequences were preferentially rearranged (23.1%) in these patients. 19.2% of Indian T-ALL patients demonstrated both clonal TCR gamma and delta gene rearrangements along with surface expression of TCRgammadelta. Although the majority of T-ALL patients showed surface expression of TCRalphabeta, the small fraction (19.2%) of TCRgammadelta+ T-ALL represent a distinct subgroup which needs further evaluation
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Articles Articles Tata Memorial Hospital
616.155 Available AR1127

T-cell acute lymphoblastic leukemia (T-ALL) is a clonal lymphoid malignancy and junctional sequences of rearranged T-cell receptor (TCR) represent the best suitable marker to study clonality in these patients. A sensitive, non-radioactive, and rapid approach of PCR coupled with heteroduplex analysis was used to analyse clonality of TCR gamma and delta gene rearrangements in 26 Indian T-ALL patients. Amongst TCR gamma gene family, VgammaI-Jgamma1.3/2.3 sequences were most utilized (53.9%) while from TCRdelta repertoire Vdelta1-Jdelta1 sequences were preferentially rearranged (23.1%) in these patients. 19.2% of Indian T-ALL patients demonstrated both clonal TCR gamma and delta gene rearrangements along with surface expression of TCRgammadelta. Although the majority of T-ALL patients showed surface expression of TCRalphabeta, the small fraction (19.2%) of TCRgammadelta+ T-ALL represent a distinct subgroup which needs further evaluation

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