Sulfhemoglobin under the spotlight - Detection and characterization of SHb and HbFeIII-SH.
Biochim Biophys Acta Mol Cell Res
; 1870(1): 119378, 2023 01.
Article
en En
| MEDLINE
| ID: mdl-36220452
Sulfhemoglobinemia is an incurable disease caused by an overdose of sulfur-containing drugs with oxidizing properties. Its diagnosis remains hindered due to the similarity of symptoms to other pathological state - methemoglobinemia, as well as contradictory information on the structure and characteristics of sulfhemoglobin. Herein, we present sulfhemoglobinemia model on living functional human erythrocytes, designed to recreate processes which could take place in a patient body in order to complement missing information and highlight distinctiveness of two hemoglobin (Hb) adducts formed after interaction with sulfur donors. Employed techniques, UV-Vis absorption, Raman, Fourier transformed infrared (FT-IR) and electronic circular dichroism (ECD) spectroscopies, allowed to distinguish and characterize Hb adduct with sulfur atom bounded directly to the iron ion (HbFeIII-SH), and irreversibly connected to the porphyrin ring (SHb - sulfhemoglobin). Presented herein results provided also new evidence on formation of both these hemoglobin adducts inside functional erythrocytes under oxidative conditions and during sulfur-containing drug presence, what can be further translated into future physiological studies. Moreover, we found that sulfur attachment to the porphyrin ring altered Hb structure and lead to changes in protein packing inside RBCs, eventually. Interestingly, measurement of blood drop smear by Raman spectroscopy occurred the most accurate method to differentiate HbFeIII-SH and SHb, indicating potential of this technique in sulfhemoglobinemia diagnosis.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Porfirinas
/
Sulfohemoglobinemia
Límite:
Humans
Idioma:
En
Revista:
Biochim Biophys Acta Mol Cell Res
Año:
2023
Tipo del documento:
Article
País de afiliación:
Polonia
Pais de publicación:
Países Bajos