Medical Microbiology & Parasitology
Permanent URI for this communityhttps://repository.ui.edu.ng/handle/123456789/505
Browse
40 results
Search Results
Item Comparative analysis of Cervical Human Papillomavirus DNA testing and cytological findings among women presenting for “Pap” smear in a Tertiary Health Centre in Northern Nigeria(SCIENCE DOMAIN International, 2016) Manga, M. M.; Fowotade, A.; Abdullahi, Y. M.; El-Nafaty, A. U.; Adamu, S.; Bojude, A. D.; Pindiga, H. U.; Bakare, R. A.; Osoba, A. O.Aim: This study was conducted to compare different cytological findings with cervical HPV infection among women presenting for cervical cancer screening in Gombe north-eastern Nigeria. Study Design: It is a hospital based cross-sectional study. Place and Duration of Study: Departments of Obstetrics/Gynaecology and Histopathology Federal Teaching Hospital Gombe (FTHG) Nigeria, between August 2013 and May 2014. Methodology: Two hundred and nine (209) women were subjected to liquid-based cervical cytology and HPV DNA testing. Results: Of the 209 participants, cytological findings were normal in 126 (61.6%) women while 80 (39.0%) had abnormal features. Three (1.4%) respondents had unsatisfactory smears. The observed abnormal cytological features include HPV changes 30 (14.4%), HPV changes with inflammation 2 (1.0%), inflammatory changes alone 36 (17.3%), Low Squamous Intraepithelial Lesion; LSIL 3 (1.4%), High Squamous Intraepithelial Lesion; HSIL 5 (2.4%) and malignant changes 3 (1.4%). Positive HPV DNA testing was detected among 100 (48.1%) of the participants. Almost half 60 (47.6%) of the women with normal cytology were positive for HPV. Among women with cytologically detected HPV changes, only 16 (50%) were also HPV DNA positive. The sensitivity and specificity of cervical cytology in detecting HPV infection was 16.2% and 85.0% respectively. Conclusion: This study reports a very low sensitivity but relatively high specificity of cytology in detecting cervical HPV infection. It further justifies the need for introduction of HPV DNA testing to improve efficiency and maximise the sensitivity of cytology based cervical cancer screening for women above 30 years.Item Blueprint for health security in Nigeria by 2050: infectious diseases perspective(University College Hospital, University of Ibadan, 2019) Adekanmbi, O.; Fowotade, A.; Ogunbosi, B.; Oladokun, R.Background: Infectious Diseases remain a leading cause of morbidity and mortality in Nigeria. Notably, natural and socio-cultural differences across Nigeria account for significant differences in types of infectious diseases that occur in different parts of the country. The communicable nature of infectious diseases either from person to person or via vectors has made it difficult to eradicate or even stem the tide of these diseases. HIV/AIDS, tuberculosis and malaria in particular are well established and enduring contributors to the infectious disease burden in Nigeria and this is very likely to continue to be the case in the foreseeable future. Method: Literature from PubMed and Google was extracted using the keywords; Health Security, Year 2050 and Infectious Diseases Results: In more recent times in Nigeria, the problem of emerging and re-emerging infections, often of epidemic importance as well as antimicrobial resistance also add to the infectious disease burden and compete for the already inadequate resources available to battle infectious disease. Many infectious diseases can be prevented by simple, effective and relatively low-cost interventions. Such interventions need to be emphasized to maximize cost-effectiveness of any resources expended. Nigeria’s young, trainable, potential healthcare workforce and existing infrastructure such as the primary healthcare system, disease surveillance systems and widespread mobile phone use need to be strengthened arid leveraged for a good approach to infectious disease control. Conclusion: As Nigeria’s population is set to double by 2050, health security from an infectious disease standpoint will require policy change to support continuous training and re-training all cadres of healthcare workers to respond specifically to the problems that are fed back from the population while being fully aware of predictable (corruption, inadequate financing) and unpredictable (disease outbreaks, climate change, microbial mutation) factors that can serve as a hindrance.Item Human papillomavirus correlates of high grade cervical dysplasia among HIV-Infected women at a major treatment centre in Nigeria: a cross-sectional study(African Field Epidemiology Network (AFENET), 2019) Yakub, M. M.; Fowotade, A.; Anaedobe, C. G.; Manga, M. M.; Bakare, R. A.; Abimiku, B. A.Introduction: persistent high-risk HPV (hrHPV) infection is higher among women living with HIV/AIDS thus increasing their risk for cervical cancer. We evaluated the virological and immunological correlates of cervical dysplasia in HIV-infected women. Methods: a cohort of 220 consenting women attending the antiretroviral clinic of the Federal Medical Centre, Keffi, Nigeria was tested for cervical human papilloma virus (HPV) infection using PCR. The prevalent HPV genotypes were determined by DNA sequencing. CD4+T count and type specific HPV was correlated with cervical cytology. Descriptive and inferential statistical analysis of the data was done using the statistical package for social sciences (SPSS) version 20 (SPSS Inc, Illinois, USA) for analysis after validation. Results: overall HPV prevalence was 54.1% while the hrHPV prevalence was 35.9%. Premalignant and malignant lesions were observed among participants with CD4+T counts between 200-300/mm3. A statistically significant association was observed between cervical premalignant lesions and CD4+ count (X2=24.747, P value=0.001) as well as hrHPV infections (X2=46.800, P<0.001). Conclusion: risk stratification with HPV screening among HIV-infected women will help in early case management of cervical precancerous lesions.Item Seroprevalence of hepatitis E among restaurant food handlers in Ibadan, Nigeria(National Institute for Medical Research (NIMR), 2019) Fowotade, A.; Akande, O.; Gbaja, A. T.; Ogunleye, V. O.; Ajayi, A.; Kehinde, A. O.Background: Hepatitis E virus (HEV) is one of the causative agent of acute viral hepatitis in humans. HEV is an important public health disease in many parts of the world because it is transmitted faeco-orally. Majority of the documented studies on hepatitis E virus in Nigeria have focused on pregnant women and animal handlers with limited data among food handlers. Thus the current study aimed at investigating the prevalence of HEV infection among food handlers operating within the premises of a tertiary care facility. Methods: One hundred and seventy seven (177) food handlers were screened using commercial Enzyme- Linked Immuno-Sorbent Assay (ELISA) to detect IgM antibodies to Hepatitis E. A semi-structured questionnaire was used to assess risk factors for HEV infection. Results: HEV IgM antibodies were detected in 16 (9.0%) of the participants. Age-specific HEV IgM seroprevalence appeared to decrease with age, however there were no significant differences in HEV IgM seropositivity regarding age (P=0.251), gender (P = 0.231), marital status (P=0.735) and religion (P = 0.906). Significant risk factors for HEV IgM seropositivity included source of water for drinking (P=0.03) and the use of soap for hand washing (P=0.02). Conclusion: Our findings suggest that HEV remains a public health problem, as the virus circulates at low but considerable levels especially among food handlers; thus posing a threat to potential contacts. Proper hand washing practices as well as provision of portable water are important factors for the control of Hepatitis E.Item Re-emergence of Monkeypox in Nigeria: a cause for concern and public enlightenment(African Society for Clinical and Experimental Microbiology, 2018) Fowotade, A.; Fasuyi, T. O.; Bakare, R. A.Monkey pox infection is a zoonotic infection transmitted by direct or indirect contact with blood, body fluids and lesions of an infected animal. Human to human spread of Monkey pox has been described and infection is usually self-limiting, with an incubation period of 6-16 days. In Nigeria, the last case of monkey pox infection was recorded over 46 years ago. The recent emergence in Nigeria occurred in the year 2017 and was reported to have spread to 24 states with 228 suspected individuals affected. Laboratory diagnosis, as well as management and prevention of monkey pox infection in Nigeria, remain challenging as Nigeria is a resource-poor country with limited infrastructure, technical skill and training which is required in making a diagnosis. The ability of the monkey pox virus to evolve, its potential bioterrorism potential, as well as its recent emergence in Nigeria further justifies the need for improving the understanding of the presentation and prevention of monkey pox infection.Item Purpura Fulminans with Peripheral Gangrene in severe Falciparum Malaria: a case series(Corpus Publishers, 2019) Fowotade, A.; Oladokun, R. E.; Bello, O. E.; Aigbovo, E. O.Background: Purpura fulminans is an acute fatal illness consisting of septicaemia, shock, and disseminated intravascular coagulation, often manifesting with gangrene of the distal extremities and necrosis of skin. Purpura fulminans associated with severe malaria has rarely been reported among children. Case Report: Two cases of purpura fulminans with disseminated intravascular coagulation probably due to severe falciparum malaria, are presented from a tertiary health facility in Nigeria. Both cases were males, and were infants aged 6 and 7 months respectively. They presented with fever, seizures, loss of consciousness and features of shock and had associated peripheral gangrene which developed hours into admission. Investigations showed P. falciparum hyper-parasitemia and evidence of disseminated intravascular coagulation. No focus for sepsis was identified and there were no bacterial isolates from blood culture. The second child survived but was left with amputated digits and audiovisual deficits. Conclusion: The cases presented demonstrate that purpura fulminans can occur in children with severe malaria even in P. falciparum endemic settings.Item Internal and external quality control in the medical microbiology laboratory(African Society for Clinical and Experimental Microbiology, 2018) Fowotade, A.; Fayemiwo, S. A.; Bongomin, F.; Fasuyi, T. O.; Aigbovo, O. A.; Adegboro, B.Culture media play a very important role in bacteriology as they are used in the isolation, identification and antimicrobial susceptibility testing. It is essential that the quality of media be safeguarded to have a successful microbiology laboratory. Microorganisms usually show typical morphological appearance and properties on solid media. Variations in the composition of the medium may alter this appearance and properties. There is therefore a need to ensure good quality media, which is capable of giving satisfactory results by ensuring a proper quality management system. Often times, majority of laboratories prepare their media for routine diagnostics and research purposes. Therefore, it is essential that certain parameters of media are checked thoroughly before they are considered suitable for laboratory use. Control methods are discussed in details in this report.Item Generation of ribosome imprinted polymers for sensitive detection of translational responses(Nature Portfolio, 2017) King, H. A.; El-Sharif, H. F.; Matia-González, A. M.; Iadevaia, V.||; Fowotade, A.; Reddy, S. M.; Gerber, A. P.Whilst the profiling of the transcriptome and proteome even of single-cells becomes feasible, the analysis of the translatome, which refers to all messenger RNAs (mRNAs) engaged with ribosomes for protein synthesis, is still an elaborate procedure requiring millions of cells. Herein, we report the generation and use of “smart materials”, namely molecularly imprinted polymers (MIPs) to facilitate the isolation of ribosomes and translated mRNAs from merely 1,000 cells. In particular, we show that a hydrogel-based ribosome imprinted polymer could recover ribosomes and associated mRNAs from human, simian and mice cellular extracts, but did not selectively enrich yeast ribosomes, thereby demonstrating selectivity. Furthermore, ribosome imprinted polymers enabled the sensitive measurement of an mRNA translational regulatory event, requiring 1,000-fold less cells than current methodologies. These results provide first evidence for the suitability of MIPs to selectively recover ribonucleoprotein complexes such as ribosomes, founding a novel means for sensitive detection of gene regulation.Item Normalization of Gene expression by quantitative RT-PCR in human cell line: comparison of 12 endogenous reference genes(Research and Publications Office, Jimma University, 2018) Fowotade, A.BACKGROUND: Polymerase Chain Reaction (PCR) has become an important diagnostic and research tool of modern molecular biology globally. Real-time PCR allows for rapid and reliable quantification of mRNA transcription. Reference genes are used as internal reaction control to normalise mRNA levels between different samples in order to allow for an exact comparison of mRNA transcription level. METHODS: In this study, twelve commonly used human reference genes were investigated in Human Embryonic Kidney Cell Lines (HEK293) using real-time qPCR with SYBR green. The genes included beta-2-microglobulin (B2M), glyceraldehyde-3- phosphate dehydrogenase (GAPDH), succinate dehydrogenase complex subunit A (SDHA), and tyrosine 3-monooxygenase/tryptophan 5-monooxygenase activation protein zeta polypeptide (YWHAZ). The stability of these reference genes was investigated using the geNorm application. RESULTS: The range of expression stability in the genes analysed was (from the most stable to the least stable): UBC, TOP1, ATP5B, CYC1, GAPDH, SDHA, YWHAZ, CTB, 18S, EIFA-2, B2M and RPL13A. The optimal number of reference targets in the experiment was calculated to be 2 (geNorm V<0.15) when comparing a normalization factor based on the 2 or 3 most stable targets). CONCLUSION: The expression stability varied greatly between the 12 candidate reference genes. UBC, TOP1, ATP5B, CYC1 and GAPDH respectively showed the highest stability in HEK293 cells based on both expression stability and expression level. Overall, our data suggest that UBC and TOP1show the least variation and the highest expression stability. This report validates the need for rational selection of reference genes for data normalization to ensure accuracy of quantitative PCR assays.Item Human papillomavirus infection among women attending family planning clinic in Nigeria: prevalence, correlates, and co-infection with Chlamydia trachomatis(Taylor & Francis Ltd, 2018) Fowotade, A.; Osisanwo, D. A.; Bakare, R. A.Infection with high-risk genotypes of human papillomavirus (HPV) is considered the main cause of invasive cervical. A number of epidemiologic studies have suggested that HPV and Chlamydia trachomatis (CT) play a synergistic role in the etiology of cervical intraepithelial neoplasia and subsequent cervical cancer. The current study aimed to evaluate the HPV prevalence and the risk factors for co-infection with CT among women attending family planning clinic in Nigeria. Following enrolment, 90 patients were screened for IgG antibodies to virus-like proteins of HPV types 6, 8, 16, and 18. CT seropositivity was tested by enzyme-linked immunosorbent assay for the detection of IgG and IgM antibodies. The prevalence of HPV IgG was 20%. Seropositivity for CT IgM was 77.8% while the IgG was 0%. A total of 10 women (11.1%) were seropositive for both CT IgM and HPV IgG antibodies. Seropositivity for HPV IgG was significantly associated with age at marriage (P < 0.001), current Chlamydia infection (P < 0.011), and number of children (P < 0.025), while seropositivty for HPV IgG and Chlamydia trahomatis IgM was significantly associated with age at coitarche (P < 0.028), number of life sex partners (P < 0.033), and history of multiple sexual partners (P < 0.002).