Natural & Applied Sciences

Research Papers/Topics in Natural & Applied Sciences

A pilot biomonitoring study of bladder tumor antigen (BTA) in aflatoxin exposed Nigerian villagers

AbstractObjective: To correlate the levels of bladder tumour antigen (BTA) with aflatoxin M1 (AFM) in a humanpopulation in Nigeria.Subjects and methods: A pilot, observational study was conducted with 22 human subjects randomlyrecruited from a Nigerian rural community. Serum and first morning urine of participants were analysedfor human BTA and AFM1, respectively, using quantitative ELISA assays.Results: All the subjects were positive to AFM1 (mean= 0.235± 0.072 ng/mL) while 19 were positi...

Bioactive Constituents and Antibacterial Screening of Two Nigerian Plant Extracts Against Selected Clinical Bacteria

Abstract Background: The growing desires to combat antibiotic resistance among pathogenic bacteria necessitate the need to search for new antimicrobials agents from other sources such as plants. Objectives: The present study investigated the antibacterial activities and bioactive components of Nymphaea lotus and Spondias mombin against selected clinical bacteriaMaterial and Methods: Extracts of N. lotus and S. mombin were prepared by 72 hours maceration in 70%methanol. The antimicrobial susce...

Vernonia amygdalina: A folkloric herb with anthelminthic properties

Vernonia amygdalina, a widely grown shrub plant in Africa is consumed as vegetable and has high medicinalvalue. It has gained wide application in the treatment and management of various diseases. Theleaves are useful components for herbal medicine constitution. The plant’s activities is a result of diversebioactive compounds isolated from the different parts of the plant. These metabolites have specificallybeen efficacious against parasites especially worms. The mechanisms of activities i...

Plasmodial Infection and Haematological Parameters in Febrile Patients in a Hospital in Oyo Town, South-western Nigeria

A cross-sectional study on Plasmodium infection was conducted among 158 febrile patients (65 malesand 93 females) reporting to Oyo State Hospital, Oyo, South-western Nigeria. Parasitological andhaematological examinations of the blood samples were conducted. An overall infection rate of 29.7%was observed with parasite densities ranging from 96 - 64680 asexual parasites/µL blood. Thepercentages of infected male and female individuals were 27.7 and 31.2%, respectively. The least(12.5%) and the...

Lymphatic Filariasis in Southwestern Nigerian Rural Communities: A Cross-sectional Survey of the Knowledge, Awareness, and Predisposing Factors

AbstractBACKGROUND Nigeria is the second most endemic country in the world for lymphatic filariasis, withcontrol efforts often hampered by poor community awareness and involvement in intervention strategies.OBJECTIVE The aim of this study was to assess the knowledge, perception, and psychosocial aspects of some residents in Nigerian rural communities about lymphatic filariasis in order to develop disease control and intervention strategies with active community involvement.METHODS A standar...

Plasmodium Falciparum and Hepatitis B Virus Infection in Nigerian Urban Population

Dear Editor,Infection due to Plasmodium falciparum is a serious public health threat in sub-Saharan Africa. Malaria endemic foci are often times affected by other infectious agents which may contribute to the clinical episodes of the disease. 1Hepatitis B virus is one of such infectious agents that coexistwith P. falciparum in most endemic areas. Although the accurate infection status due to hepatitis B virus infection is not yet known, an estimated 350 million persons worldwide are chronic c...

MOLECULAR CHARACTERISATION OF BULINUS SNAILS – INTERMEDIATE HOSTS OF SCHISTOSOMES IN OGUN STATE, SOUTH-WESTERN NIGERIA

Abstract: Freshwater snails of the genus Bulinus O. F. Müller, 1781 are intermediate hosts for schistosomes, trematode parasites which cause schistosomiasis. The genus includes closely related species complexes with restricted gene flow between populations of each taxon. Despite their importance as intermediate hosts, unambiguous identification of these snails remains challenging. We applied molecular approach to their identification to achieve a better understanding of the epidemiology of s...

Food-borne human parasitic pathogens associated with household cockroaches and houseflies in Nigeria

Cockroaches and houseflies pose significant public health threat owning to their ability to mechanically transmit human intestinal parasites and other disease-causing microorganisms. This study aims at assessing the vectoral capacity of cockroaches and houseflies in the transmission of human intestinal parasites. Intestinal parasite external surface contamination of 130 cockroaches and 150 houseflies caught within dwelling places in Ilishan-Remo town, Ogun StateNigeria was determined. Coc...

Efficacy of ethanolic leaf extracts of Carica papaya and Terminalia catappa as molluscicides against the snail intermediate hosts of schistosomiasis

The study evaluated the molluscicidal effects of ethanolic leaf extracts of two Nigerian indigenousmedicinal plants; Terminalia catappa and Carica papaya. Different concentrations 2500, 630, 160, 40 and10 ppm were prepared from the stock solution of the extracts. Adult Biomphalaria pfeifferi and Bulinusglobosus were exposed to these different graded concentrations. Mortalities were observed at intervalsof time. There were strong positive correlations between mortalities observed in snails and...

A Cross-sectional Study on Urogenital Schistosomiasis in Children; Haematuria and Proteinuria as Diagnostic Indicators in an Endemic Rural Area of Nigeria

AbstractBackground: Rapid and accurate diagnosis is necessary for the management of  schistosomiasis in endemic areas.Objective: To assess the burden of  urogenital schistosomiasis and the diagnostic efficiency of  morbidity indicators of  the disease in an endemic rural community of  Nigeria.Methods: A cross-sectional school-based study was conducted. Urine samples of  487 pupils were screened microscopically for S. haematobium and tested for haematuria and proteinuria using chemical r...

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ABSTRACT In recent years, electronic commerce of agricultural products has developed rapidly. In the development process of agriculture, with the help of some agricultural research institutes putting up websites for their various institutes, where farmers can read up how to improve productivity or some improved varieties (seedlings, cassava stems etc) to use in their farms but a platform has not been laid for the implementation of the sale of agricultural produce. The author discusse...

Excerpt of fungi culti

Mushroom is a macro fungus with a distinctive fruiting body which can be either epigeous or hypogeous and large enough to be seen with the naked eye and can be picked with hand (Chang and Milles.19920).           Mushrooms derive all of their energy and growth materials from their growth medium, through biochemical decomposition processes (Chang, Shu-Ting, et al. 2004).

Pollen Grains in reconstructing past climate

This work was written to help people and the society in general understand the contributions little, unnoticeable things like the pollen grains make in the world and also for them to see the relevance of paleo-botany

A Survey of Linear Programming Concepts

Linear programming is a mathematical tool that is used to maximize or minimize a function when constraints are linear. In this project, we considered some examples and applications of linear programming problems. TABLE OF CONTENTS  Title page Certification                      Dedication                      Acknowledgements        &nb...

Electrolyte Content of Some Soft Drinks

AbstractSoft drinks are consumed daily in Nigeria due to their characteristic taste, palatability, affordability and thirst quenching potential. This study quantifies the amount of electrolytes of Biochemical significance in selected soft drinks sold in Port Harcourt and their pH values. The samples included six frequently consumed soft drinks; (Coke, Sprite, Fayrouz, Mountain-Dew, Fanta and Pepsi). The results showed that the samples contain relatively high amount of Sodium(Na+) ranging from...


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