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Aloin: A Natural Antitumor Anthraquinone Glycoside With Iron Chelating and Non-Atherogenic Activities

Aloin: A Natural Antitumor Anthraquinone Glycoside With Iron Chelating and Non-Atherogenic Activities

Amr Y Esmat, Mahmoud M Said, Sally A Khalil

Pharm Biol. 2015 Jan;53(1):138-46.

PMID: 25243866

Abstract:

Context:
The antitumor activity of aloin, the active anthraquinone of Aloe juice, against different murine and human tumors has been reported.
Objective:
In the present study, the impact of repeated aloin treatment at its maximum tolerated dose on serum levels of lipid profile, some elements, iron status and kidney function, compared with doxorubicin (a cardiotoxic anthracycline and inhibitor of erythropoiesis), was assessed.
Materials and methods:
Rats were treated with a single dose of doxorubicin (30 mg/kg body weight, intraperitoneal) or aloin (50 mg/kg body weight, intramuscular) twice weekly over 2 weeks.
Results:
Acute doxorubicin treatment elevated serum levels of triacylglycerols (59.90%), total cholesterol (42.29%), cholesteryl esters (54.75%), low density lipoprotein-cholesterol (230.16%), very low density lipoprotein-cholesterol (56.42%), urea (287.53%), and creatinine (85.38%), whereas serum high density lipoprotein-cholesterol, sodium, and calcium levels were reduced (44.61, 9.61, and 9.76%, respectively), as compared with controls. In contrast, aloin treatment showed insignificant changes in all the aforementioned parameters. Both doxorubicin and aloin induced erythropoiesis impairment demonstrated by a reduction in blood hemoglobin concentration. While aloin treatment elevated serum iron level (30.28%), doxorubicin treatment reduced serum levels of iron (51.47%) and percent transferrin saturation (55.21%), and in contrast, increased serum total iron binding capacity (34.85%). The chelating affinities of iron-aloin and -doxorubicin complexes, which contain bidentate iron-binding moieties, have been shown in the infrared spectra.
Discussion and conclusion:
The non-cardiotoxic effect of aloin treatment was due to its non-atherogenic and iron-chelating activities, which might also contribute in part to its anti-proliferative activity.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP1415732-A	Aloin A		1415-73-2	Price

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