Disorders of Hemoglobin


Book Description

Completely revised new edition of the definitive reference on disorders of hemoglobin.




Variant Haemoglobins


Book Description

Variant Haemoglobins – A Guide to Identification is based on the premise that any single diagnostic technique offers only a very provisional identification of a variant haemoglobin. In routine diagnostic practice two techniques are needed as a minimum, with the results being interpreted in the light of the clinical details, blood count, blood film and ethnic origin. This book covers 150 normal and variant haemoglobins that have been studied and carefully documented. Variant Haemoglobins has four introductory chapters followed by an invaluable atlas. The introductory chapters cover the genetics of haemoglobin synthesis the principles of tests employed for identification common haemoglobins of major clinical or diagnostic importance thalassaemias and related conditions The atlas section comprises 170 full colour pages in which each variant haemoglobin or combination of haemoglobins is illustrated by cellulose acetate electrophoresis at alkaline pH, agarose gel electrophoresis at acid pH, isoelectric focusing and one or more HPLC traces. For ease of reference, the atlas pages are arranged according to the retention time of each haemoglobin on HPLC, this becoming increasingly the primary technique employed in haemoglobin identification. Bringing a mix of necessary scientific expertise and clinical knowledge, each author has more than 30 years experience in the diagnosis of variant haemoglobins. Providing otherwise unavailable information, this unique and practical guide is illustrated with over 700 high quality colour digital images plus flow charts and line diagrams covers common and important haemoglobin variants, in addition to many rarer ones is an essential reference source for diagnosis in the haematology laboratory A remarkably useful book, Variant Haemoglobins will be valuable for haematopathologists, clinical and laboratory haematologists in practice and in training and all laboratory staff involved in haemoglobinopathy diagnosis.




Prevention of Thalassaemias and Other Haemoglobin Disorders


Book Description

Volume 1 of the Prevention Book presents the principles of a programme for the prevention of the thalassaemia and other haemoglobin disorders, including a description of the various types of disorders requiring prenatal diagnosis, the strategies used for carrier screening, and a number of annexes listing upto date epidemiological and mutation data on thalassaemia. This book was written for use in combination with Volume 2, which describes many of the laboratory protocols in great detail.




Human Hemoglobin Genetics


Book Description

The discovery in the late 1940's that sickle cell anemia is a "molecular disease" of hemoglobin was the crucial advance that gave birth to the scientific discipline of human molecular genetics. In subsequent years, with the continued expansion of knowledge about the biology and genetics of the hemoglobins, and particularly as a result of the characterization of the very large numbers of globin gene mutations, the human hemoglobin system has remained as the premier model of gene expression at the molecular level in man. With the recent explosion of new information about the genetic properties of the hemoglobins, it appears inevitable that this gene system will continue to occupy a unique position in human molecular genetics for many years in the future. Hemoglobin genetics has also recently come of age as a diagnostic and clinical discipline. The heightening of public awareness in recent years about sickle cell disease, thalassemia, and other inherited disorders has brought increasing demands for carrier detection services as well as for genetic counseling and education. The more recent development of prac tical and reliable methods for the antenatal diagnosis of hemoglobin dis orders has further increased the scope of clinical hemoglobin genetics, and it can be anticipated that these potent diagnostic techniques will have increasing application in the years ahead.




The Thalassaemia Syndromes


Book Description

In the new edition of this successful and authoritative book, the thalassaemias are reviewed in detail with respect to their clinical features, cellular pathology, molecular genetics, prevention and treatment. It is aimed at specialists in haematology in the laboratory or clinical setting, particularly in areas where thalassaemia is common either in the native population or in immigrant communities. The fourth edition has been both updated and re-organized. Three new chapters have been added on the link between alpha-thalassaemia and mental retardation, on avoidance and population control and on global epidemiology. Considerable emphasis is placed on molecular pathology reflecting the huge burst of information to have come out of this field in the last few years.




Human Hemoglobins


Book Description

Since the dawn of the era of molecular biology, hemoglobin has been subjected to more scrutiny than any other protein, and Bunn, Forget, and Ranney can each lay claim to major contributions to the saga of hemoglobin. Their well-organized, comprehensive, and superbly illustrated work is an excellent review of the abnormal hemoglobin field. Early chapters deal with the structure and function of human hemoglobin and the way in which this is modified in various disease states. Later sections deal with the various structural hemoglobin variants and their associated clinical manifestations, the thalassaemias, and the acquired disorders of hemoglobin. The sections that deal with the modification of hemoglobin function in various disease states are particularly good. The book contains an extensive and up-to-date bibliography and is remarkably free from errors of fact or type--the best standard of reference on the subject as of the year 1977.







The Characterisation of Human Haemoglobin Variants


Book Description

Haemoglobin variants arise from mutations within one of the globin genes. Some variants have abnormal physiological characteristics and result in a clinical disease state while others cause no detectable abnormality. A few of the more commonly occurring haemoglobin variants may be identified by routine haemoglobin electrophoresis, solubility and stability screening procedures. Haemoglobin variants which cannot be readily identified by this approach may be characterised by either protein analysis techniques to identify precise amino acid changes within a particular globin chain, or by DNA analysis techniques to detect nucleotide changes which code for the alteration in haemoglobin structure. In this thesis, a comparative study was made of various electrophoretic and chromatographic techniques for the isolation of abnormal haemoglobins and globin chains. Protein characterisation of haemoglobin variants was achieved by two-dimensional paper mapping or reverse phase high performance liquid chromatography of globin pepticles and amino acid analysis or N-terminal sequence analysis of any abnormal peptides detected. In a few cases, changes in relative atomic mass detected by fast atom bombardment mass spectrometry were used to characterise abnormal peptides in haemoglobin variants. The characterisation of globin gene mutations was achieved by analysis of DNA isolated from leucocytes of affected patients. The polymerase chain reaction was used to amplify selective portions of the globin genes and DNA mutations were detected by direct sequencing or by restriction enzyme analysis. The optimum technique or combination of techniques of those deployed in the investigation were determined for the characterisation of a total of 30 different haemoglobin variants ....