Colloquium Series on Genomic and Molecular Medicine: Molecular Genetics of Thalassemia Syndromes (PDF)
(Sprache: Englisch)
This book reviews the molecular genetics of the thalassemia syndromes, inherited hemoglobin disorders that comprise the commonest monogenic disorders globally. Thalassemias are found in high frequencies in tropical regions corresponding to the malaria belt....
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This book reviews the molecular genetics of the thalassemia syndromes, inherited hemoglobin disorders that comprise the commonest monogenic disorders globally. Thalassemias are found in high frequencies in tropical regions corresponding to the malaria belt. Beta thalassemia traits show high HbA2 by HPLC, and β-globin mutations (commonly point mutations) are detected by using ARMS-PCR, reverse dot-blot analysis and β-globin gene sequencing. Globally >300 β globin gene mutations exist, however regional mutations are limited to 5-6 common ones. Alpha globin gene defects can only be identified by molecular tests, the exception being HbH disease that shows "golf ball" appearance in HbH preparation, pre-integration peaks on HPLC and a fast-moving band on hemoglobin electrophoresis. Multiplex Gap-PCR identifies common α-globin gene deletions. Specific PCR across the junction caused by the unequal crossing over can detect α-gene triplication. However, heterozygosity or homozygous triplication cannot be resolved by this technique. Non-deletional α-thalassemia can be characterized by specific α-globin gene sequencing. Identification of unusual deletions requires Multiplex Ligation-dependent Probe Amplification. In conclusion, the molecular characterization of human globin gene disorders is required to resolve the phenotypically heterogeneous thalassemia syndromes. Molecular analysis is also an important tool to prevent these disorders by offering prenatal screening in regions with a high disease burden.
Autoren-Porträt von Prashant Sharma, Reena Das
Reena Das received an MBBS degree from Jabalpur in 1989 and M.D. in pathology from the Postgraduate Institute of Medical Education and Research, Chandigarh, India in 1992. After completing her Senior Residency in 1996, she joined the faculty in hematology at the Postgraduate Institute of Medical Education and Research and has been a professor of haematology there since 2009. Her areas of interest include teaching hematology and analyzing molecular genetics of nonmalignant hematological disorders such as thalassemias and hemoglobinopathies, hemophilias, iron overload syndromes, and hereditary spherocytosis. Her passion is the prevention of hematological disorders with a genetic basis by oering prenatal diagnosis. She has 163 publications of which the majority are in peer-reviewed international journals. She has written 7 chapters in books and guided many medical and Ph.D. students in pursuing their research work. Her hobbies include cooking, oil painting, and embroidery.Prashant Sharma received his MBBS and M.D. (pathology) from the University of Delhi, India in 2000 and 2004, respectively, followed by a D.M. (hematopathology) from All India Institute of Medical Sciences, New Delhi, India in 2009. After a stint at Delhi’s Sir Ganga Ram Hospital, he joined the faculty at the Postgraduate Institute of Medical Education and Research, Chandigarh, India in 2011. He is currently an associate professor in the hematology department there. Prashant has 82 PubMed-indexed papers and 3 chapters in books. His research interests include design and testing of innovative diagnostic tests, hematology laboratory instrumentation, and molecular diagnostics as applied to the hemolytic and nutritional anemias and hemostasis/thrombosis. He is an associate editor of the Indian Journal of Hematology and Blood Transfusion and serves on the editorial boards of the BMJ Case Reports and the World Journal of Methodology. In his spare time, Prashant is a long-distance runner who
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Bibliographische Angaben
- Autoren: Prashant Sharma , Reena Das
- 2016, 57 Seiten, Englisch
- Verlag: Biota Publishing
- ISBN-10: 1615047255
- ISBN-13: 9781615047253
- Erscheinungsdatum: 01.08.2016
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