Natural Iron Chelator. Chemistry, Biology, and Therapeutic Applications

Table of Contents

I. Introduction

1. Iron disorders in the human body

Metabolism of Iron

Iron blood disorders

Classification and causes of iron overload

Complications of iron overload

Iron overloads medications

2. Natural compounds as alternative chelating agents

3. Agricultural wastes with reported iron chelating activity

4. Chemical and biological activity of Mangifera Indica L. leaves.

5. Iron Chelation assays

Determination of iron chelation activity by 2-2` bipyridyl reagent

Materials

Methods

II. Phytochemical screening and iron chelating activity

of Mangifera indica L. leaves

III. Bio-guided fractionation of iron chelators from Mangifera indica L. leaves

Identification of the isolated compounds

IV. A comparative study of the iron chelating property

of mangiferin Vs. desferal®

V. In-vivo investigation of the total extract (TM) and the ethyl acetate fraction (EM) of Mangifera indica L. leaves in iron overloaded rats

Isolation, characterization, and biological evaluation of iron chelators from some natural sources

Conclusion

References

Research Objectives and Themes

This work aims to explore agricultural residues as potential, cost-effective sources of natural iron chelators to mitigate complications associated with iron overload, such as hemochromatosis, while providing a safer alternative to synthetic drugs. The research evaluates the antioxidant and iron-chelating properties of various plant leaf extracts, specifically identifying potent polyphenolic compounds like mangiferin and assessing their therapeutic efficacy in iron-overloaded animal models.

• Screening and identification of iron-chelating activity in diverse agricultural wastes.
• Bio-guided fractionation and structural characterization of active phytochemicals.
• Comparative performance analysis of isolated natural compounds against commercial iron-chelating drugs.
• In-vivo assessment of the protective effects of mango leaf extracts against iron-induced oxidative damage in rats.

Excerpt from the Book

Summary of Chapters

I. Introduction: This chapter provides an overview of iron metabolism, the clinical significance of iron overload disorders, and the rationale for investigating natural products as sustainable iron chelators.

II. Phytochemical screening and iron chelating activity of Mangifera indica L. leaves: This section details the systematic extraction and fractionation of mango leaves to identify the most potent fraction for iron-chelating activity.

III. Bio-guided fractionation of iron chelators from Mangifera indica L. leaves: This chapter focuses on the isolation and structural characterization of specific active compounds, namely mangiferin and iriflophenone-3-C-β-D-glucoside.

IV. A comparative study of the iron chelating property of mangiferin Vs. desferal®: The investigation evaluates the chemical and chelating performance of isolated mangiferin against the standard clinical drug desferal®.

V. In-vivo investigation of the total extract (TM) and the ethyl acetate fraction (EM) of Mangifera indica L. leaves in iron overloaded rats: The final chapter presents the physiological evaluation of the extracts' efficacy in mitigating iron accumulation and oxidative stress within an iron-overloaded rat model.

Keywords

Iron overload, Iron chelators, Mangifera indica, Mangiferin, Agricultural wastes, Oxidative stress, Phytochemical screening, Bio-guided fractionation, Antioxidant activity, Desferal, In-vivo study, Polyphenolic compounds, Chelation therapy, Hemochromatosis, Iron metabolism

Frequently Asked Questions

What is the fundamental purpose of this research?

The research aims to identify and evaluate natural iron chelators derived from agricultural waste, specifically mango leaves, to provide a cost-effective and safer alternative to existing synthetic iron-overload treatments.

What are the central topics discussed in the work?

The core topics include iron metabolism, the mechanism of iron overload, the biochemical characterization of polyphenolic compounds, and their potential therapeutic application as antioxidant and iron-chelating agents.

What is the primary research question being addressed?

The study addresses whether extracts from specific agricultural wastes, particularly Mangifera indica leaves, possess sufficient iron-chelating and antioxidant properties to be used as therapeutic alternatives for managing iron overload conditions.

Which scientific methodologies are employed?

The study utilizes a combination of in-vitro assays (bipyridyl and ferrozine assays), phytochemical screening, bio-guided fractionation (using column chromatography), spectroscopic analysis (IR, NMR, Mass Spectrometry), and in-vivo animal testing to validate clinical efficacy.

What does the main body of the work cover?

The main body covers the extraction and screening of plant materials, the isolation of bioactive compounds like mangiferin, comparative chemical analysis with standard drugs, and the evaluation of these compounds' biological effects on iron-overloaded rats.

What defines the character of this research?

This research is defined by its multidisciplinary approach, bridging pharmaceutical chemistry and pharmacology to transform agricultural by-products into high-value bioactive treatments for iron-related medical conditions.

How is the chemical structure of isolated compounds confirmed?

The researchers confirmed the structures through comprehensive spectroscopic techniques, including 1H-NMR, APT, HMBC, and FT-IR, to characterize the xanthoid moiety and glycoside linkages in mangiferin and iriflophenone-3-C-β-D-glucoside.

What significance is attributed to mangiferin?

Mangiferin is identified as the major active polyphenolic constituent in mango leaves, exhibiting potent iron-chelating and antioxidant properties that make it a promising candidate for chelation therapy.

What are the observed in-vivo results?

The in-vivo study showed that treatment with the ethyl acetate fraction of mango leaves significantly decreased iron accumulation in the liver and spleen of iron-overloaded rats, while restoring antioxidant enzyme levels and improving overall liver function.