» Articles » PMID: 1752955

Effects of Alpha-thalassemia and Sickle Polymerization Tendency on the Urine-concentrating Defect of Individuals with Sickle Cell Trait

Overview
Journal J Clin Invest
Specialty General Medicine
Date 1991 Dec 1
PMID 1752955
Citations 33
Authors
Affiliations
Soon will be listed here.
Abstract

A defect in urine concentrating ability occurs in individuals with sickle cell trait (HbAS). This may result from intracellular polymerization of sickle hemoglobin (HbS) in erythrocytes, leading to microvascular occlusion, in the vasa recta of the renal medulla. To test the hypothesis that the severity of the concentrating defect is related to the percentage of sickle hemoglobin present in erythrocytes, urinary concentrating ability was examined after overnight water deprivation, and intranasal desmopressin acetate (dDAVP) in 27 individuals with HbAS. The HbAS individuals were separated into those who had a normal alpha-globin genotype (alpha alpha/alpha alpha), and those who were either heterozygous (-alpha/alpha alpha) or homozygous (-alpha/-alpha) for gene-deletion alpha-thalassemia, because alpha-thalassemia modulates the HbS concentration in HbAS. The urinary concentrating ability was less in the alpha alpha/alpha alpha genotype than in the -alpha/alpha alpha or -alpha/-alpha genotypes (P less than 0.05). After dDAVP, the urine osmolality was greater in patients with the -alpha/-alpha genotype than with the -alpha/alpha alpha genotype (882 +/- 37 vs. 672 +/- 38 mOsm/kg H2O) (P less than 0.05); patients with the -alpha/alpha alpha genotype had greater concentrating ability than individuals with a normal alpha-globin gene arrangement. There was an inverse linear correlation between urinary osmolality after dDAVP and the percentage HbS in all patients studied (r = -0.654; P less than 0.05). A linear correlation also existed for urine concentrating ability and the calculated polymerization tendencies for an oxygen saturation of 0.4 and O (r = -0.62 and 0.69, respectively). We conclude that the severity of hyposthenuria in HbAS is heterogeneous. It is determined by the amount of HbS polymer, that in turn is dependent upon the percentage HbS, which is itself related to the alpha-globin genotype.

Citing Articles

Sickle Cell Screening in Adults: A Current Review of Point-of-Care Testing.

Mendez-Marti S, Zik C, Alan S, Wang H, Ershler W J Hematol. 2024; 13(3):53-60.

PMID: 38993742 PMC: 11236353. DOI: 10.14740/jh1272.


Sickle cell allele HBB-rs334(T) is associated with decreased risk of childhood Burkitt lymphoma in East Africa.

Hong H, Gouveia M, Ogwang M, Kerchan P, Reynolds S, Tenge C Am J Hematol. 2023; 99(1):113-123.

PMID: 38009642 PMC: 10872868. DOI: 10.1002/ajh.27149.


The nephropathy of sickle cell trait and sickle cell disease.

Ataga K, Saraf S, Derebail V Nat Rev Nephrol. 2022; 18(6):361-377.

PMID: 35190716 PMC: 9832386. DOI: 10.1038/s41581-022-00540-9.


5-(Hydroxymethyl)furfural restores low-oxygen rheology of sickle trait blood in vitro.

Hansen S, Wood D, Higgins J Br J Haematol. 2020; 188(6):985-993.

PMID: 31889311 PMC: 7150585. DOI: 10.1111/bjh.16251.


Kidney Function Decline among Black Patients with Sickle Cell Trait and Sickle Cell Disease: An Observational Cohort Study.

Olaniran K, Allegretti A, Zhao S, Achebe M, Eneanya N, Thadhani R J Am Soc Nephrol. 2019; 31(2):393-404.

PMID: 31810990 PMC: 7003305. DOI: 10.1681/ASN.2019050502.


References
1.
PERILLIE P, EPSTEIN F . Sickling phenomenon produced by hypertonic solutions: a possible explanation for the hyposthenuria of sicklemia. J Clin Invest. 1963; 42:570-80. PMC: 289317. DOI: 10.1172/JCI104746. View

2.
Weatherall D, Clegg J, Blankson J, McNeil J . A new sickling disorder resulting from interaction of the genes for haemoglobin S and alpha-thalassaemia. Br J Haematol. 1969; 17(6):517-26. DOI: 10.1111/j.1365-2141.1969.tb01402.x. View

3.
Hebbel R . Beyond hemoglobin polymerization: the red blood cell membrane and sickle disease pathophysiology. Blood. 1991; 77(2):214-37. View

4.
Fodde R, Losekoot M, Van Den Broek M, Oldenburg M, Rashida N, Schreuder A . Prevalence and molecular heterogeneity of alfa+ thalassemia in two tribal populations from Andhra Pradesh, India. Hum Genet. 1988; 80(2):157-60. DOI: 10.1007/BF00702860. View

5.
Steinberg M, Embury S . Alpha-thalassemia in blacks: genetic and clinical aspects and interactions with the sickle hemoglobin gene. Blood. 1986; 68(5):985-90. View