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Tan XM, Liu YH, Shang X, Ye YH, Xu XM. A Novel Hemoglobin Variant Hb Liaobu [α107(G14)Val→Leu, HBA2: c.322G>C] Detected by Matrix-Assisted Laser Desorption Ionization-Time-of-Flight Mass Spectrometry. Hemoglobin 2022; 45:341-344. [PMID: 35322741 DOI: 10.1080/03630269.2022.2036186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We here describe a novel hemoglobin (Hb) variant, Hb Liaobu [α107(G14)Val→Leu, HBA2: c.322G>C], in a Chinese family. The structurally abnormal α chain variant could not be detected using capillary electrophoresis (CE) and was subsequently characterized by matrix-assisted laser desorption ionization-time of flight (MALDI-TOF) mass spectrometry (MS), and further confirmed by reversed phase high performance liquid chromatography (HPLC). Sanger sequencing revealed a novel base mutation on the α2-globin gene and RNA analysis by reverse transcription polymerase chain reaction (RT-PCR) showed the presence of an abnormal HBA transcript. The isopropanol stability test indicated the stable state of this structural Hb variant. In conclusion, a new Hb variant, Hb Liaobu, was discovered and characterized. It was proven to be a nonpathogenic variant. Our study resolved the confusion in the clinical diagnosis of individuals with this novel Hb variant in this family.
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Affiliation(s)
- Xue-Mei Tan
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
| | - Yan-Hui Liu
- Department of Prenatal Diagnosis Center, Dongguan Maternal & Children Health Hospital, Dongguan, People's Republic of China
| | - Xuan Shang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
| | - Yu-Hua Ye
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
| | - Xiang-Min Xu
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, People's Republic of China
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Raspante Cerqueira Teixeira K, de Medeiros LA, Mendes JA, Vaz ER, Cunha TM, de Oliveira EP, Penha-Silva N, Crispim CA. The erythrocyte membrane stability is associated with sleep time and social jetlag in shift workers. PLoS One 2019; 14:e0222698. [PMID: 31545844 PMCID: PMC6756543 DOI: 10.1371/journal.pone.0222698] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 09/05/2019] [Indexed: 11/19/2022] Open
Abstract
The osmotic stability of the erythrocyte membrane (OSEM) has been associated with changes in lipid profile, blood glucose and blood pressure. Changes in these parameters are very frequent in shift workers, possibly because of the lack of synchronization of biological rhythms, which results in the social jetlag. However, the existence of association between OSEM and circadian misalignment has not been investigated in this population. Therefore, this study investigated whether shift work, sleep time and social jetlag (SJL) are associated with biochemical and hematological variables. A population consisting of 79 men working at night (n = 37) or during the day (n = 42), aged between 21 and 65 years and with a mean BMI of 27.56 ± 4.0 kg/m2, was investigated cross-sectionally in relation to sleep time, SJL, anthropometric (height, weight and waist circumference) and blood variables, with emphasis on the OSEM. SJL was calculated by the absolute difference between the midpoint of sleep on work and rest days. The Generalized Linear Model (GzLM) was used to investigate the existence of associations between SJL and average sleep time in relation to the analyzed variables. Workers without SJL presented lower baseline lysis values of erythrocytes in isotonic medium in relation to workers with SJL. In addition, workers who slept on average less than 6 hours had higher OSEM, and higher total and LDL-cholesterol in relation to those who slept more than 6 hours, regardless of the shift. It is possible that the association of sleep deprivation and SJL with erythrocyte membrane stability is mediated through changes in the lipid profile.
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Affiliation(s)
| | | | | | - Emília Rezende Vaz
- Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | | | | | - Nilson Penha-Silva
- Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
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de Freitas MAR, da Costa AV, Medeiros LA, Cunha LM, Coutinho Filho U, Garrote Filho MDS, Diniz ALD, Penha-Silva N. The role of the erythrocyte in the outcome of pregnancy with preeclampsia. PLoS One 2019; 14:e0212763. [PMID: 30840707 PMCID: PMC6402648 DOI: 10.1371/journal.pone.0212763] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Accepted: 02/08/2019] [Indexed: 11/19/2022] Open
Abstract
The objective of this study was to analyze the relationships of osmotic and mechanical stability of erythrocytes with anthropometric, biochemical, hematologic and hemodynamic variables in pregnant women with preeclampsia (PE). The studied population consisted of 20 normotensive patients and 16 patients with PE. Patients with PE presented worse gestational outcome, greater hematologic impairment, erythrocytes osmotically more stable in vitro, but in conditions of isotonicity with the in vivo medium, in addition to hyperflow in orbital territory, when compared to normotensive patients. The correlation analysis between anthropometric, hematologic and hemodynamic variables in patients with PE indicated that erythrocytes with lower volumes and lower levels of hemoglobin favor the occurrence of a better gestational outcome, because they are more stable and because they are associated with a decrease in the hemodynamic changes present in the disease. This should mean that the tendency to microcytosis, probably due to a mechanism of compensatory mechanical selection, is a desirable characteristic in the disease.
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Affiliation(s)
- Márcia Aires Rodrigues de Freitas
- Department of Gynecology and Obstetrics, Faculty of Medicine, Federal University of Uberlândia, Uberlândia, MG, Brazil
- Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Alice Vieira da Costa
- Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | | | - Lucas Moreira Cunha
- Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | | | | | - Angélica Lemos Debs Diniz
- Department of Gynecology and Obstetrics, Faculty of Medicine, Federal University of Uberlândia, Uberlândia, MG, Brazil
| | - Nilson Penha-Silva
- Institute of Biotechnology, Federal University of Uberlândia, Uberlândia, MG, Brazil
- * E-mail:
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Jabri MA, Marzouki L, Sebai H. Myrtle berries seeds aqueous extract abrogates chronic alcohol consumption-induced erythrocytes osmotic stability disturbance, haematological and biochemical toxicity. Lipids Health Dis 2018; 17:94. [PMID: 29685140 PMCID: PMC5913868 DOI: 10.1186/s12944-018-0746-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Accepted: 04/13/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND This study examined the effects of chronic alcohol consumption in the rat erythrocytes membrane as well as the involvement of reactive oxygen species and proinflammatory cytokines in its pathogenicity in rats and evaluated the ameliorating effects of myrtle berries seeds aqueous extract (MBSAE). METHODS Fifty adult male Wistar rats were equally divided into five groups and treated daily for two months as follows: control, ethanol (3 g kg- 1 b.w., p.o.), and ethanol + MBSAE (25, 50 and 100 mg kg- 1, b.w., p.o.). RESULTS Exposure of rats to alcohol caused significant changes of some haematological parameters, enhanced erythrocytes hemolysis as well as an overproduction of reactive oxygen species such as H2O2, OH• radical and superoxide anion, hence the increase of lipoperoxidation and the depletion of antioxidant enzymes activity as well as non-enzymatic antioxidant (-SH groups and GSH) levels. On the other hand, ethanol intoxication caused the increase of serum TNFα, IL-8, IL-6 and 1Lβ, markers of tissue inflammation. However, treatment with MBSAE alleviated all the deleterious effects of alcohol consumption. CONCLUSIONS MBSAE possess active compounds, which exert marked protective effects in chronic alcohol intoxication, possibly by regulating the erythrocytes osmotic stability as well as antioxidant and inflammatory mediators.
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Affiliation(s)
- Mohamed-Amine Jabri
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources - Institut Supérieur de Biotechnologie de Béja, Université de Jendouba, Avenue Habib Bourguiba, B.P. 382 -9000, Béja, Tunisia.
| | - Lamjed Marzouki
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources - Institut Supérieur de Biotechnologie de Béja, Université de Jendouba, Avenue Habib Bourguiba, B.P. 382 -9000, Béja, Tunisia
| | - Hichem Sebai
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources - Institut Supérieur de Biotechnologie de Béja, Université de Jendouba, Avenue Habib Bourguiba, B.P. 382 -9000, Béja, Tunisia
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Paraiso LF, Gonçalves-e-Oliveira AFM, Cunha LM, de Almeida Neto OP, Pacheco AG, Araújo KBG, Garrote-Filho MDS, Bernardino Neto M, Penha-Silva N. Effects of acute and chronic exercise on the osmotic stability of erythrocyte membrane of competitive swimmers. PLoS One 2017; 12:e0171318. [PMID: 28151958 PMCID: PMC5289559 DOI: 10.1371/journal.pone.0171318] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Accepted: 01/19/2017] [Indexed: 12/04/2022] Open
Abstract
This study aimed to evaluate the influence of acute and chronic exercise on erythrocyte membrane stability and various blood indices in a population consisting of five national-level male swimmers, over 18 weeks of training. The evaluations were made at the beginning and end of the 1st, 7th, 13th and 18th weeks, when volume and training intensity have changed. The effects manifested at the beginning of those weeks were considered due to chronic adaptations, while the effects observed at the end of the weeks were considered due to acute manifestations of the exercise load of that week. Acute changes resulting from the exercise comprised increases in creatine kinase activity (CK) and leukocyte count (Leu), and decrease in hematocrit (Ht) and mean corpuscular volume (MCV), at the end of the first week; increase in the activities of CK and lactate dehydrogenase (LDH), in the uric acid (UA) concentration and Leu count, at the end of the seventh week; increases in CK and LDH activities and in the mean corpuscular hemoglobin concentration (MCHC), at the end of the 13th week; and decrease in the value of the osmotic stability index 1/H50 and increases in the CK activity and platelets (Plt) count, at the end of the 18th week. Chronic changes due to training comprised increase in the values of 1/H50, CK, LDH, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), serum iron (Fe), MCV and Plt. Although acute training has resulted in decrease in the osmotic stability of erythrocytes, possibly associated with exacerbation of the oxidative processes during intense exercise, chronic training over 18 weeks resulted in increased osmotic stability of erythrocytes, possibly by modulation in the membrane cholesterol content by low and high density lipoproteins.
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Affiliation(s)
- Lara Ferreira Paraiso
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | | | - Lucas Moreira Cunha
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | | | - Adriana Garcia Pacheco
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | | | | | - Morun Bernardino Neto
- Department of Basic and Environmental Sciences, University of São Paulo, Lorena, São Paulo, Brazil
| | - Nilson Penha-Silva
- Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- * E-mail:
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