Prevention of Hydrogen Peroxide-Induced Red Blood Cells Lysis by Ilex paraguariensis Aqueous Extract: Participation of Phenolic and Xanthine Compounds

2012 ◽  
Vol 27 (2) ◽  
pp. 192-198 ◽  
Author(s):  
Ignacio N. Peralta ◽  
Laura Cogoi ◽  
Rosana Filip ◽  
Claudia Anesini
Metabolites ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 175 ◽  
Author(s):  
Ioannis Tsamesidis ◽  
Chinedu O. Egwu ◽  
Pierre Pério ◽  
Jean-Michel Augereau ◽  
Françoise Benoit-Vical ◽  
...  

Red blood cells are constantly exposed to reactive species under physiological or pathological conditions or during administration of xenobiotics. Regardless of the source, its accurate quantification is paramount in the area of theragnostics, which had been elusive up until now. Even if there are a lot of approaches to evaluate the oxidative stress, very sensitive methods are missing for the blood system. We therefore sought to apply a highly sensitive approach, by liquid chromatography coupled to mass spectrometry (UPLC–MS), for the quantification of reactive species such as superoxide radical and hydrogen peroxide using dihydroethidium (DHE) and coumarin boronic acid (CBA) probes respectively through the detection of 2-hydroxyethidium (2OH-E+) and 7-hydroxycoumarin (COH). The use of the high-resolution mass spectrometry associated to UPLC ensured a selective detection of superoxide and hydrogen peroxide in the blood system under diverse conditions such as oxidized red blood cells (RBCs), untreated and treated parasitized RBCs. Moreover, this technique allowed the determination of reactive species in human plasma. This protocol provides a huge opportunity for in-depth study of several pathological conditions vis-a-vis their treatment in modern medicine.


1994 ◽  
Vol 16 (1) ◽  
pp. 123-129 ◽  
Author(s):  
Cecilia Giulivi ◽  
Paul Hochstein ◽  
Kelvin J.A. Davies

1988 ◽  
Vol 96 (3) ◽  
pp. 517-524 ◽  
Author(s):  
Stefan Halbach ◽  
Nazzareno Ballatori ◽  
Thomas W. Clarkson

2020 ◽  
Vol 8 (10) ◽  
pp. 1018-1026
Author(s):  
Maximin Senou ◽  
◽  
Pascal Atchade Tchogou ◽  
Felicienne Agbogba ◽  
Ezeckiel Jacques Lokonon ◽  
...  

PsorospermumfebrifugumSpach. (Clusiaceae) is a medicinal plant found in Benin whose root bark was effective in treating anemia. To identify the family of chemical compounds of this organ was responsible for its hematopoietic efficiency, this work aimed to test the ethyl acetate fraction of the aqueous extract of the plant organ on anemic rats. Methods: Wistar rats were anemic by phenylhydrazinechloridrate on D0. From day 2 to day 15, some were gavage fed with the ethyl acetate fraction of PsorospermumfebrifugumSpach root bark aqueous extract at 40 or 60 mg / kg / day. Others received either vitafer as a reference drug or distilled water (untreated anemic group). Blood samples were collected from these rats and non-anemic control rats at days 0, 2, 7, 10 and 15 for the blood count and osmotic resistance of red blood cells. Results: At D2, phenylhydrazine significantly decreased hemoglobin and red blood cell number, which were corrected on D7 by the extract fraction with a dose-dependent effect. The extract fraction rapidly stimulated release of macrocytes, immature red blood cells in the first week to compensate the anemia. The extract did not affect blood platelet number, suggesting some specificity of action on the red blood cell line. Conclusion: The ethyl acetate fraction of Psorospermumfebrifugum root bark aqueous extract stimulated erythropoiesis faster than the crude extract. Its action seemed specific and dose-dependent. It would probably be related to the flavonoids which action mechanism needs to be explored.


2021 ◽  
Vol 13 (2) ◽  
pp. 49
Author(s):  
Tchogou AP ◽  
Sènou M ◽  
Agbogba F ◽  
Lokonon JE ◽  
Medoatinsa SE ◽  
...  

Cocos nucifera was a coastal plant whose roots were used in pharmacopoeia to treat anemia in Benin. The aqueous extract from its roots stimulated the synthesis of hemoglobin. The aim of this work was to test in vivo the efficacy of the butanolic fraction of the extract in the treatment of anemia. Methods: Wistar rats were anemic with phenylhydrazine for two days. From D2 to D15, some were treated by gavage with the butanolic fraction of the aqueous extract of Cocos nucifera roots at the dose of 40 mg or 60 mg / kg of body weight / day, others were treated with vitafer (an anti-anemic drug) or with distilled water. The rats blood were collected on days D0, D2, D7, D10 and D15 for the complete blood count and the osmotic resistance of the red blood cells. Results: On D2, phenylhydrazine significantly lowered the hemoglobin level and the number of red blood cells, which were respectively corrected on D10 and D15 by the fraction of extract with release of hypochromic macrocytes. However, the effect was slower than that of the crude extract, was not specific to erythropoiesis because it also stimulated thrombopoiesis and was not dose-dependent. Conclusion: The butanolic fraction of the aqueous extract of Cocos nucifera roots corrected anemia by stimulation of hematopoiesis. The observed biological activity would probably be linked to anthocyanins which are mainly isolated by butanol. These results contribute to a better knowledge of bioactive compounds of our antianemic plants.


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