disorders of hemoglobin steinberg
Chapter 099. Disorders of Hemoglobin (Part 1) pptx
... Chapter 099. Disorders of Hemoglobin (Part 1) Harrison's Internal Medicine > Chapter 99. Disorders of Hemoglobin Disorders of Hemoglobin: Introduction Hemoglobin is critical ... stigmata. Hemoglobin Structure Different hemoglobins are produced during embryonic, fetal, and adult life (Fig. 99-1). Each consists of a tetramer of globin polypeptide chains: a pair of α- like ... alter clinical behavior. Function of Hemoglobin To support oxygen transport, hemoglobin must bind O 2 efficiently at the partial pressure of oxygen (P O2 ) of the alveolus, retain it, and release...
Ngày tải lên: 07/07/2014, 04:20
Chapter 099. Disorders of Hemoglobin (Part 2) pdf
... the ability of hemoglobin to deliver more oxygen to tissues at low pH. It arises from the stabilizing action of protons on deoxyhemoglobin, which binds protons more readily than oxyhemoglobin ... the tetrameric structure of the proteins, the proper arrangement of the charged amino acids, and interaction with protons or 2,3-BPG. Developmental Biology of Human Hemoglobins Red cells first ... thalassemia syndromes and certain unstable hemoglobin disorders. Polymorphic variation in the amounts and/or functional capacity of AHSP might explain some of the clinical variability seen in patients...
Ngày tải lên: 07/07/2014, 04:20
Chapter 099. Disorders of Hemoglobin (Part 3) pptx
... biosynthesis) and of structural hemoglobinopathies (e.g., an abnormal amino acid sequence). Hereditary persistence of fetal hemoglobin (HPFH) is characterized by synthesis of high levels of fetal hemoglobin ... Hereditary persistence of fetal hemoglobin persistence of high levels of HbF into adult life V. Acquired hemoglobinopathies A. Methemoglobin due to toxic exposures B. Sulfhemoglobin due to ... life. Acquired hemoglobinopathies include modifications of the hemoglobin molecule by toxins (e.g., acquired methemoglobinemia) and abnormal hemoglobin synthesis (e.g., high levels of HbF production...
Ngày tải lên: 07/07/2014, 04:20
Chapter 099. Disorders of Hemoglobin (Part 4) pptx
... of the complete blood cell count (e.g., profound microcytosis with minimal anemia in thalassemia trait). Detection and Characterization of Hemoglobinopathies—General Methods Of the ... mutant hemoglobins can usually be characterized by more specialized techniques such as isoelectric focusing and/or high-pressure liquid chromatography (HPLC). Quantitation of the hemoglobin profile ... The number of severe cases of thalassemia in the United States is about 1000. Sickle cell disease is the most common structural hemoglobinopathy occurring in heterozygous form in ~8% of American...
Ngày tải lên: 07/07/2014, 04:20
Chapter 099. Disorders of Hemoglobin (Part 5) pps
... C:50% Pathophysiology of sickle cell crisis. Several sickle syndromes occur as the result of inheritance of HbS from one parent and another hemoglobinopathy, such as β thalassemia ... Chapter 099. Disorders of Hemoglobin (Part 5) Sickle Cell Syndromes The sickle cell syndromes are caused by a ... reticulocytes) that are abnormally adherent to the endothelium of small venules. These abnormalities provoke unpredictable episodes of microvascular vasoocclusion and premature RBC destruction...
Ngày tải lên: 07/07/2014, 04:20
Tài liệu Diseases and Disorders of Finfish in Cage Culture doc
... months of culture; production of 600–800 g per fish or 1.2–1.4 g per fish Stocking density is 44 fish m −3 of size 80–100 g; feeding with trash fish at 3–5% of body weight twice daily; 6–7 months of culture; ... degrada- tion of water quality in cage sites and the implementation of proper management of the aquatic environment are necessary if the industry is to expand. Rosenthal (1994) indicated the importance of ... Quezon City, Philippines. P.T.K. Woo, Axelrod Institute of Ichthyology and Department of Zoology, College of Biological Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada. vii 7 Z:\Customer\CABI\A4337...
Ngày tải lên: 14/02/2014, 17:20
COLOR ATLAS OF DISEASES AND DISORDERS OF CATTLE_2 pdf
... to acidosis. All of these factors can precipitate laminitis/coriosis, the consequences of which are abnormal horn growth and hoof wear, softening of the sole horn, dropping of the distal phalanx ... once and preferably several times daily. Loss of appetite, progressive signs of dullness, inability to sit up COLOR ATLAS OF DISEASES AND DISORDERS OF CATTLE 102 7 dermatitis in the interdigital ... required. Management: white line disorders are primarily a defect of the corium leading to the production of defec- tive cement. Coriosis may be the result of a range of factors including trauma...
Ngày tải lên: 06/03/2014, 00:20
Báo cáo khoa học: Molecular mass of macromolecules and subunits and the quaternary structure of hemoglobin from the microcrustacean Daphnia magna ppt
... glycosylation of hemoglobin subunits. Based on molecular mass information, Daphnia magna hemoglobin is demonstrated to consist of 16 subunits. The quaternary structure of the Daphnia magna hemoglobin ... by chromatofocusing [removal of ring-like molecules (‘ferritin’), but retention of high Hb quantities], numer- ous different views of the Hb molecules were obtained by negative staining of these ... Control: addition of water instead of enzymes to the reaction mixture. (B) Hb incubated with N-glycosidase F (cleavage of N-linked sugars). (C) Release of O-linked sugars. (D) Release of N- and O-linked...
Ngày tải lên: 16/03/2014, 13:20
Diagnosis, Evaluation, and Management of the Hypertensive Disorders of Pregnancy pot
... and Management of the Hypertensive Disorders of Pregnancy S12 l MARCH JOGC MARS 2008 Table 2. Classification of the hypertensive disorders of pregnancy* Primary diagnosis Definition of preeclampsia† Pre-existing ... the management of dyslipidemia and the prevention of cardiovascular disease: summary of the 2003 update. CMAJ 2003;169:921-4. Diagnosis, Evaluation, and Management of the Hypertensive Disorders of Pregnancy S48 l ... priorities: the role of self-measurement of BP, accuracy of the ratios of urinary protein to creatinine and albumin to creatinine for diagnosis of proteinuria, multivariable models for prediction of preeclampsia,...
Ngày tải lên: 28/03/2014, 14:20
COLOR ATLAS OF DISEASES AND DISORDERS OF CATTLE_1 docx
... the source of danger. Note the scorched skin over the back, upper flanks, and chest of this Holstein cow (3.75), one of a group of 35 dry cows trapped in a yard beside a stack of blazing straw. ... ATLAS OF DISEASES AND DISORDERS OF CATTLE 54 4 In utero infection in the second trimester, before the age of immunological competence of the fetus, can lead to the birth of a persistently infected ... Warble fly infestation showing several encysted subcutaneous larvae COLOR ATLAS OF DISEASES AND DISORDERS OF CATTLE 48 3 Ear necrosis from frostbite The tips of both ears of the Limousin cow (3.73) are missing: the cause...
Ngày tải lên: 28/03/2014, 22:21