Download complete project materials on Determination Of The Antiplasmodial Activity Of Extracts Of Edible Mushroom from chapter one to five with references and abstract
CHAPTER ONE
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1.0 INTRODUCTION
1.1 Background of Study
A mushroom (or toadstool) is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source.The standard for the name “mushroom” is the cultivated white button mushroom, Agaricus bisporus; hence the word “mushroom” is most often applied to those fungi (Basidiomycota, Agaricomycetes) that have a stem (stipe), a cap (pileus), and gills (lamellae, sing.
lamella) on the underside of the cap(Smith et al., 2015). “Mushroom” also describes a variety of other gilled fungi, with or without stems, therefore the term is used to describe the fleshy fruiting bodies of some Ascomycota. These gills produce microscopic spores that help the fungus spread across the ground or its occupant surface.
Forms deviating from the standard morphology usually have more specific names, such as “bolete”, “puffball”, “stinkhorn”, and “morel”, and gilled mushrooms themselves are often called “agarics” in reference to their similarity to Agaricus or their order Agaricales.
By extension, the term “mushroom” can also designate the entire fungus when in culture; the thallus (called a mycelium) of species forming the fruiting bodies called mushrooms; or the species itself(Smith et al., 2015).
Mushrooms are well known all over the world and the edible ones have been considered as functional foods. They serve to enrich food as supplements and they provide health benefits beyond the traditional nutrients they contain (Smith et al., 2015).
1.2 Statement of the Problem
Globally, millions of deaths attributed to malaria are being recorded. The disease constitutes a huge epidemiologic burden in Africa and continues and continues to cripple the economic development in the region (Trudell and Ammirati, 2009).
In Nigeria, the disease is responsible for 60% outpatient visits to health facilities, 30% childhood death, 25% of death in children under one year and 11% maternal death (Philips, 2011). The financial loss due to malaria annually is estimated to be about 132 billion Naira in form of treatment costs, prevention, loss of man-hour, etc.; yet, it is a treatable and completely evitable disease(Philips, 2011).
Malaria is endemic in Nigeria with 97% of the population of 170 million living in areas of high malaria risk and anestimated 3% living in malaria free highlands. Nigeria bearsup to 25% of the malarial disease burden in Africa, making this country with the highest malaria mortality (WHO, 2014).
The Global Fund (TGF)’s response in the fight against malaria in Nigeria is co-managed by the National Malaria Elimination Programme (NMEP). Currently NMEP is implementing New Funding Model (NFM) of TGF which began in January 2015 (WHO, 2014).
Implementation of malaria control interventions is broad-based and includes: Case Management; Integrated Vector Management; Special Interventions such as Intermittent Presumptive treatment with Sulphadoxine and Pyrimethamine; and other supportive interventions (WHO, 2014).
Edible mushrooms have been source of food to man, even before the for-knowledge of its nutritional content. It has served as major source of food in several African countries including Nigeria(Smith et al., 2015). However, its use as an antimalarial agent has not been documented. There is therefore, the need to assess the suppressive effect of the extract of this mushroom on albino mice.
1.3 Justification of the Research
Although the parasite responsible for P. falciparum malaria has been in existence for 50,000–100,000 years, the population size of the parasite did not increase until about 10,000 years ago, concurrently with advances in agriculture (Harper et al., 2011) and the development of human settlements. Close relatives of the human malaria parasites remain common in chimpanzees.
Some evidence suggests that the P. falciparummalaria may have originated in gorillas (Prugnolle et al., 2011). References to the unique periodic fevers of malaria are found throughout recorded history (Cox,2013). The advent of multiple drug resisitant malaria led to the continuous effort to curb the menace it has created through the use of all possible approaches for its eradication.
However, P. berghei is used as a model organism for the investigation of human malaria because of its similarity to the Plasmodium species which cause human malaria. P. berghei has a very similar life-cycle to the species that infect humans, and it causes disease in mice which has signs similar to those seen in human malaria. Importantly, P. berghei can be genetically manipulated more easily than the species which infect humans, making it a useful model for research into Plasmodium genetics.
In several aspects the pathology caused by P. berghei in mice differs from malaria caused by P. falciparum in humans. In particular, while death from P. falciparum malaria in humans is most frequently caused by the accumulation of red blood cells in the blood vessels of the brain, it is unclear to what extent this occurs in mice infected with P. berghei (Craig et al., 2012).
Instead, in P. berghei infection, mice are found to have an accumulation of immune cells in brain blood vessels (Craig et al., 2012). This has led some to question the use of P. berghei infections in mice as an appropriate model of cerebral malaria in humans (Craig et al., 2012).
1.4 Aim and Objectives
1.4.1 Aim
To determine the antiplasmodial activity of extracts of edible mushroom: Agaricus bisporus on Plasmodiumbergheiin albino mice.
1.4.2 Objectives
The specific objectives of this study were to:
1. assess the analytical components of edible mushroom (Agaricus bisporus) using Gas Chromatography Mass Spectrophotometry (GCMS).
2. determinethe antiplasmodial activity of edible mushroomextract:(Agaricus bisporus) on Plasmodium berghei.
3. determine the effect of mushroom extract on the temperature and weight of mice infected with Plasmodium berghei.
compare the effect of aqueous and alcoholic mushroom extract on malaria parasitemia.
1.5 Research Hypotheses (Null)
1. There is no significant difference in the analytical components of Agaricus bisporusextractand a known standard drug for Plasmodium berghei.
2. There is no significant difference in the antiplasmodial activity of Agaricus bisporus extract on Plasmodium bergheianda known standard drug for Plasmodium berghei.
3. Agaricus bisporusextracthas no significant difference in effect on the temperature and weight of mice infected with Plasmodium berghei.
4. Aqueous and alcoholic Agaricus bisporusextracthave no significant difference on malaria parasitemia.
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