System Biology
Ismail Muhammad; Muinat Abdullahi Muhammad; Rejoice Asher; Abdulmalik Bala Shuaibu
Abstract
This research aimed to evaluate the larvicidal activity of the lower doses of commercially synthetic Bacillus thuringiensis israelensis (Vectobac 12 Aqueous Solution (12AS)) against the fourth instar larva. One hundred and fifty blood-fed female anopheles mosquitoes were collected from different resting ...
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This research aimed to evaluate the larvicidal activity of the lower doses of commercially synthetic Bacillus thuringiensis israelensis (Vectobac 12 Aqueous Solution (12AS)) against the fourth instar larva. One hundred and fifty blood-fed female anopheles mosquitoes were collected from different resting sites from Abuja Quarters in June 2022 using an aspirator and allowed to breed until the first instar larva appeared. The larvae were monitored and fed with 10% yeast until the third instar emerged. 240 healthy third instar larvae were selected and grouped into three treatments containing sixty (60) larvae each and replicated three times. The first, second and third treatments were respectively treated with 0.84, 0.42 and 0.21ml/l of Vectobac 12AS. Each treatment has a control containing twenty (20) larvae. Larval mortality was determined using a glass rod at an interval of 15 minutes for 24 hours. ANOVA was used to statistically analysed differences in the larval mortality between the treatment and probit analysis was used to determine the lethal concentration (LC) and the lethal time (LT). Mortality of 1(6.7%) and 3(5.0%) were observed in the first treatment (0.84ml/l) after 15 and 30minute of exposure respectively. The highest mortality of 60(100%) was observed in all the treatments after 24 hours of exposure. Statistically, there was no significant difference (F=0.081, P> 0.05). 2.35 ml/l, 5.54 ml/l and 8.15 ml/l was determined to be LC50, LC90 and LC99 respectively and LT50, LT90 and LT99 were found to be, 1809.29min and 2451.34min respectively. Conclusively vectobac 12AS has demonstrated a high level of efficacy as it revealed 100% larval mortality even at a lower recommended dose. Further research should be carried out to study the impact of other biological and environmental factors on the efficacy of vectobac 12AS.
Medical
Ismail Muhammad; Pukuma Mikah Sale; Tanko Mahmoud Muhammad; Ali Rufai; Augustine Linda Midala; Bala Abubakar
Abstract
Successful malaria diagnosis is the mainstay of successful treatment, prevention and eradication of malaria infection. Apart from the gold standard technique (Microscopy), numerous diagnostic techniques perform a similar function to microscopy and in most cases tend to have varying sensitivity and specificity, ...
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Successful malaria diagnosis is the mainstay of successful treatment, prevention and eradication of malaria infection. Apart from the gold standard technique (Microscopy), numerous diagnostic techniques perform a similar function to microscopy and in most cases tend to have varying sensitivity and specificity, especially when compared with the gold standard technique. Therefore this study aimed to determine the Performance and accuracy of SD Bioline Malaria Ag P.f (05fk50) (Rapid Diagnostic Test kit) to Gold standard (Microscopy). A total of two hundred (200) samples were collected from the consented study subjects and analyzed using RDT and Giemsa staining technique. The result revealed an overall prevalence of 132(66.0%) and 167(83.5%) respectively by RDT and Microscopy, where 115 (57.5%) were true positive, there was no significant difference between the two techniques (P> 0.05, df= 1, χ2 = 3.695). The RDT recorded a sensitivity and specificity value of 68.86% and 48.48% respectively with a positive predictive value of 87.78% and a negative predictive value of 23.53%. The RDT recorded an overall accuracy of 0.66. The Rapid Diagnostic test kit used in the present demonstrated a high level of sensitivity and positive predictive value with relatively low specificity and negative predictive value. Regular checks on the Performance and accuracy of all brands of RDT should be conducted as their perform
Medical
Ismail Muhammad; Pukuma Micah Sale; Tanko Mahmoud Mohammed; Saleh Zaliha Miyim; Asiya Muhammad Usman
Abstract
Malaria control and its elimination heavenly depend on successful and reliable diagnosis using recommended diagnostic techniques. These available techniques often have certain peculiarities and mode applications, thus making them have different levels of performance and accuracy. Therefore the aim of ...
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Malaria control and its elimination heavenly depend on successful and reliable diagnosis using recommended diagnostic techniques. These available techniques often have certain peculiarities and mode applications, thus making them have different levels of performance and accuracy. Therefore the aim of this study was to evaluate the performance of PCR in relation to Rapid Diagnostic Test Kit (SD Bio line Malaria Ag P.f (05fk50)) in malaria diagnosis. A total of 200 blood samples were collected from the consented study subjects using the vein puncture technique and analysed using PCR and RDTs. Plasmodium falcifarum’s DNA was extracted using Quick-DNA™ Miniprep Plus Kit with catalog number D4069. 18SrRNA gene of Plasmodium falciparum from chromosome 13 was amplified using the two primers. For the RDTs technique, the SD Bio line Malaria Ag P.f (05fk50) test kit was used. Malaria prevalence of 106(53.0%) and 132(66.0%) were recorded using PCR and RDTs respectively. The PCR demonstrates an overall accuracy of 0.53 with sensitivity and specificity values of 56.06 and 52.94% respectively. The negative and positive predictive values were 69.81 and 38.30% respectively. PCR demonstrated a good level of performance and is therefore recommended as an effective diagnostic tool for malaria, especially in patients where the parasite density/parasitaemia level is very low.
Medical
Ismail Muhammad; Bala Abubakar; Tanko Mahmoud Muhammad
Abstract
Human beings are sometime expose to the same to predisposing factors of a given infectious disease, but the outcome in terms of disease manifestation differs greatly. This variation is mainly attributed to the genetic makeup of such individuals; this is because human genetic has long been associated ...
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Human beings are sometime expose to the same to predisposing factors of a given infectious disease, but the outcome in terms of disease manifestation differs greatly. This variation is mainly attributed to the genetic makeup of such individuals; this is because human genetic has long been associated with the variation in susceptibility to various infectious diseases, which is termed as genetic resistance. Therefore the aim of this paper was to review the state of knowledge on genetic resistance associated with malaria infection. Genetic resistance to malaria can be describe as an inherited alteration or changes in the genetic material of humans specifically DNA molecule and other vital biomolecules which increases the chances of resistance to malaria and thus, result in an increased survival of individuals with those genetic alterations. In addition such changes also affect the general wellbeing and survival of the parasite to the extent that the parasite cannot even multiply or replicate itself while in such infected erythrocyte. This is because such alteration in the DNA molecule interferes with some of the vital chemical and biochemical processes of the parasite (Plasmodim spp). Therefore, several genetic disorders and or trait which include: Sickle cell disease, Glocose-6-Phosphatedehyrogenase deficiency, Pyruvate Kinase deficiency, Duffy antigen, Ovalocytocytosis, Thalassemia and ABO blood group are known to offer special protection against malaria disease in individuals who possessed at least one of such disorders or trait.
Gene Expression Studies
Ismail Muhammad; Pukuma Micah Sale; Muhammad Khadija Salisu; Tanko Mahmoud Muhammad; Bala Abubakar; Augustine Linda Maidala; Enock Nuwanyada
Abstract
Chloroquine was one of the most cheapest and effective chemotherapeutic drugs for Plasmodium falciparum-malaria, but for a long, the drug has been officially withdrawn in almost all malaria-endemic countries including Nigeria, due to the development of resistance by the parasite. Withdrawal of the drug ...
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Chloroquine was one of the most cheapest and effective chemotherapeutic drugs for Plasmodium falciparum-malaria, but for a long, the drug has been officially withdrawn in almost all malaria-endemic countries including Nigeria, due to the development of resistance by the parasite. Withdrawal of the drug may make the drug regains its efficacy. Therefore, this study aimed to determine the presence of Biomarkers associated with chloroquine resistance from Gombe Local Government Area, Gombe State, Nigeria after its withdrawal in 2005. Twenty hundred blood samples were collected from consented study subjects and analysed using Microscopy, RDT and PCR. DNA was extracted using Quick-DNA™ Miniprep (No. D4069), Purity and Concentration of the DNA were determined using Nanodrop Spectrophotometer. 57 true positive samples were selected for molecular analysis. Nested PCR was used to amplify the required codon (C72S, M74I, K76T and N75E) position of PCRT the gene of P. falciparum. Both Primary and Secondary PCR was carried out. The PCR products were subjected to electrophoresis in 2% agarose and stained with ethidium bromide. The amplicons were purified and sequenced, after which the sequenced products were subjected to BLAST software. Single Nucleotide Polymorphism was recorded from C72S and K76T with a prevalence of 05(8.80%) and 46(80.70%) respectively. Confirmed biomarkers of Chloroquine resistance are still present in P. falciparum isolate from Gombe L.G.A.
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