Volume 64, Issue 1, Pages (July 2003)

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Volume 64, Issue 1, Pages 11-16 (July 2003) Hereditary systemic amyloidosis associated with a new apolipoprotein AII stop codon mutation Stop78Arg Masahide Yazaki, Juris J. Liepnieks, Mark S. Barats, Arthur H. Cohen, Merrill D. Benson Kidney International Volume 64, Issue 1, Pages 11-16 (July 2003) DOI: 10.1046/j.1523-1755.2003.00047.x Copyright © 2003 International Society of Nephrology Terms and Conditions

Figure 1 Renal biopsy. (A) Extensive glomerular amyloid deposits and amyloid in walls of blood vessels. (B) Congo red staining. Kidney International 2003 64, 11-16DOI: (10.1046/j.1523-1755.2003.00047.x) Copyright © 2003 International Society of Nephrology Terms and Conditions

Figure 2 DNA sequence analysis of exon 4 of apolipoprotein AII (apoAII) gene. Both T and C are present at the first position of apoAII stop codon (arrow) in the DNA sequence of the patient, indicating a replacement of stop codon by arginine (Arg) at codon 78. Abbreviations are: Ser, serine; Gln, glycine; Thr, threonine; Ala, alanine. Kidney International 2003 64, 11-16DOI: (10.1046/j.1523-1755.2003.00047.x) Copyright © 2003 International Society of Nephrology Terms and Conditions

Figure 3 Schema of 3′ cDNA sequence and deduced C-terminal amino acid sequence in the patient shows that the Stop78Arg mutation induces an extended peptide composed of 21 amino acids. Kidney International 2003 64, 11-16DOI: (10.1046/j.1523-1755.2003.00047.x) Copyright © 2003 International Society of Nephrology Terms and Conditions

Figure 4 Western blot of patient's plasma with anti-human apolipoprotein AII (apoAII). Nonreduced denatured and reduced denatured plasma samples were run in lanes C (normal control), G78 (a patient with apoAII Stop78Gly variant [5]), S78 (a patient with apoAII Stop78Ser variant [10]), and R78 (the patient in this study). Abbreviations are: N, normal apoAII monomeric form; V, variant apoAII monomeric form; V+V, N+V, and N+N, dimeric forms of apoAII. Kidney International 2003 64, 11-16DOI: (10.1046/j.1523-1755.2003.00047.x) Copyright © 2003 International Society of Nephrology Terms and Conditions

Figure 5 Western analysis of serum and amyloid fibrils from patient with apolipoprotein AII (apoAII) amyloidosis. Serum of the patient (lane 2) shows both normal (N) and variant (V) apoAII under reducing conditions, whereas a normal control serum (lane 3) contains only normal apoAII. Amyloid fibrils isolated from the patient (lane 1) contain only the variant apoAII, indicating that either reduction of the disulfide linked dimer occurs prior to amyloid fibril formation or only the variant homodimer participates in the amyloid process. Kidney International 2003 64, 11-16DOI: (10.1046/j.1523-1755.2003.00047.x) Copyright © 2003 International Society of Nephrology Terms and Conditions

Figure 6 Schema of three identified mutant apolipoprotein AII (apoAII) amyloid proteins compared to wild-type apoAII. Each variant is a 98 residue protein differing only at residue 78. Kidney International 2003 64, 11-16DOI: (10.1046/j.1523-1755.2003.00047.x) Copyright © 2003 International Society of Nephrology Terms and Conditions