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Nwankwo HC, Idowu AA, Muhammad A, Waziri AD, Abubakar YS, Bashir M, Erukainure OL. Antisickling effect of chrysin is associated with modulation of oxygenated and deoxygenated haemoglobin via alteration of functional chemistry and metabolic pathways of human sickle erythrocytes. Hum Exp Toxicol 2021; 40:S108-S124. [PMID: 34151613 DOI: 10.1177/09603271211025599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Sickle cell disease (SCD) treatment and management remain a challenging puzzle especially among developing Nations. Chrysin's sickling-suppressive properties in human sickle (SS) erythrocytes in addition to its effect on AA-genotype erythrocytes were evaluated. Sickling was induced (76%) with 2% sodium metabisulphite at 3 h. Chrysin prevented (81.19%) the sickling and reversed same (84.63%) with strong IC50s (0.0257 µM and 0.00275 µM, respectively). The levels of oxygenated haemoglobin in the two groups (before and after induction approaches) were similar but significantly (P < 0.05) higher than that of SS erythrocytes (the 'induced' control), with chrysin-treated AA-genotype showing no effects relative to the untreated. The level of deoxygenated haemoglobin in the 'induced' control group was significantly (P < 0.05) higher than those of the chrysin-treated SS erythrocytes. Normal and chrysin-untreated erythrocytes (AA-untreated) were significantly more resistant to osmotic fragility than the SS-untreated. However, treatment with chrysin significantly reduced the osmotic fragility of the cells relative to the untreated cells. Furthermore, chrysin treatment significantly lowers the high level of 2,3-diphosphoglycerate (2,3-DPG) observed in the sickle erythrocytes, with no effects on AA-genotype erythrocytes. Based on functional chemistry, chrysin treatment alters the functional groups in favour of its antisickling effects judging from the observed bends and shifts. From metabolomics analysis, it was observed that chrysin treatment favors fatty acid alkyl monoesters (FAMEs) production with concomitant shutting down-effects on selenocompound metabolism. Thus, sickling-suppressive effects of chrysin could potentially be associated with modulation of oxygenated and deoxygenated haemoglobin via alteration of human sickle erythrocyte's functional chemistry and metabolic pathways implicated in SCD crisis.
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Affiliation(s)
- H C Nwankwo
- Department of Biochemistry, Faculty of Life Sciences, 58989Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - A A Idowu
- Department of Biochemistry, Faculty of Life Sciences, 58989Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - A Muhammad
- Department of Biochemistry, Faculty of Life Sciences, 58989Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - A D Waziri
- Department of Haematology, 58989Ahmadu Bello University Teaching Hospital, Zaria, Kaduna State, Nigeria
| | - Y S Abubakar
- Department of Biochemistry, Faculty of Life Sciences, 58989Ahmadu Bello University, Zaria, Kaduna State, Nigeria.,Key Laboratory for Plant-Microbe Interaction, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - M Bashir
- Centre for Dryland Agriculture, 54714Bayero University, Kano State, Nigeria
| | - O L Erukainure
- Department of Pharmacology, 37702University of the Free State, Bloemfontein, South Africa
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Magro S, Santilli E, Mancuso R, Puzzonia P, Consarino C, Morgione S, Galati MC, Fersini G, Madonna G, Brancati C. Spectrum of beta-thalassemia mutations in Calabria: implications for prenatal diagnosis. Am J Hematol 1995; 48:128-9. [PMID: 7847328 DOI: 10.1002/ajh.2830480213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Using a combination of oligonucleotide probes and restriction endonuclease enzymes, we characterize beta-thalassemic mutations in 91 homozygous patients and 86 unrelated carriers. Overall, 268 beta-thalassemic genes were obtained. Eleven beta-globin mutations were identified, confirming the wide molecular heterogeneity of beta-thalassemia in Calabria. Information from the present study represents the mainstay for the development of a program of early prenatal diagnosis by direct detection of mutations in Calabria.
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Affiliation(s)
- S Magro
- Servizio di Microcitemia ed emopatie infantili, Soveria Mannelli, Catanzaro, Italy
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Schilirò G, Romeo MA, Mollica F. Prenatal diagnosis of thalassemia: the viewpoint of patients. Prenat Diagn 1988; 8:231-3. [PMID: 3375200 DOI: 10.1002/pd.1970080309] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Twenty-eight young people with thalassemia major expressed their opinion about prenatal diagnosis. All of them stated that they intended to marry and have children; thirteen of them (46 per cent) said that they would have also accepted a thalassemic carrier as a partner and that if married to a carrier they would have undergone prenatal diagnosis and selective abortion. All but one refused the prospect of an affected child. When asked if they would have preferred that before their birth their parents had undergone prenatal diagnosis and abortion, 19 patients (68 per cent) gave an affirmative answer. These results clearly indicate that even people affected by thalassemia major, who are the potential victims of prenatal diagnosis and selective abortion, largely accept prenatal diagnosis as a means of preventing their disease.
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Affiliation(s)
- G Schilirò
- Istituto di Clinica Pediatrica I, Università di Catania, Italy
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