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Biology subjects

Mohamed, N. S.

Publications and source records attributed to Mohamed, N. S..

3 recordsLinked to original sources

Socioeconomic impacts of elimination of Onchocerciasis in Abu-Hamed focus, northern Sudan: lessons after elimination

IntroductionOnchocerciasis is one of the most devastating Neglected Tropical Diseases (NTDs) and it is mostly prevalent in Africa. The disease has important heavy social and economic burdens on the infected populations including low productivity, unemployment, social isolation, and stigma. Methodology/Principal FindingsThe socio-economic impacts of the Onchocerciasis elimination in Abu-Hamed, River Nile State, Sudan; were investigated using a well-established questionnaire, 512 participants in ten affected communities were interviewed. Our findings revealed that these communities are recovering from the social and economic burden of the diseases, with 90% of the research participants reported general satisfaction about the elimination of the disease in their community, and about 48.3% of them attended secondary school or university. Only 0.6% reported unemployment, and 25.3% and 24.7% of the participants were workers and farmers respectively. Except about the vector biting and nuisance, the majority of the respondents (90%) had no complain after the elimination of the disease in the area. Also, 90.5% of the participants reported either stable or increase in their work performance during the last twelve months. About 93.8% of the respondents were engaged in normal daily activities and involved in happy events like marriage and giving birth during the last twelve months. Conclusions/SignificanceOverall, we conclude that the elimination of Onchocerciasis in Abu-Hamed has several positive impacts on the economy and social life of Abu-Hamed local communities, but this could be maximized by controlling the vector, which is still having a negative impact on the populations. Establishing local developmental projects will help these communities greatly to recover and become more productive. Author SummaryOnchocerciasis, also known as the river blindness, is a disease that caused by a parasitic worm which could infest people eyes or skin causing a blindness or sub-dermal disease. This worm is transmitted to human by the bite of an insect, the black fly. Although the disease is not fatal in most of the patient but it presents a significant economic and social burden on the infected people, their families and communities. This burden is a result of the social stigma associated with the skin form of the disease, and the lack of vision in case of blindness (ocular manifestation). Onchocerciasis was a public health problem in the study site, Abu-Hamed. In 2015, the disease was officially has been declared eliminated from the area. We investigated the socio-economic impacts of this success on the local communities. We have interviewed randomly selected 512 participants to understand their perspective and highlighting their experience regarding the disease elimination. Our research aimed to fill the gap of knowledge between the public health and social science by highlighting the social and economic benefits of health interventions and diseases elimination/eradication. Furthermore, to urge intervention programs to empower the local communities in the planning and implementation of health interventions for a better success.

microbiology↗

Prevalence and risk factors profile of seropositive Toxoplasmosis gondii infection among apparently immunocompetent Sudanese women

ObjectivesToxoplasma gondii is an opportunistic parasite that cause a clinical manifestation known as toxoplasmosis. We investigated the prevalence and potential risk factors of T. gondii infection among women in Khartoum, Sudan. A sero-parasitological cross-sectional study included 100 women aging between 15-50 years old was conducted in Khartoum, Sudan between January - November 2018. Serum samples were collected and investigated for presence of anti-T. gondii immunoglobulins.\n\nResultsMean age of the women population included was 26.75{+/-}8.25 with a range between 15 and 50 years. Sero-prevalence of T. gondii antibodies was 27% (27/100) with a 95% confidence interval (CI) of 18.6 - 36.8%. Among seropositive population 81% (22/27), 15% (4/27) and 4% (1/27) were seropositive for IgG antibodies, IgM antibodies and both antibodies respectively. Age group 21-30 years old had the highest frequency of detected IgG (10/45) and IgM (3/45). Married women had the highest frequency of detected IgG or IgM, 18/79 and 3/79, respectively. Risk factors analysis showed a total of 37/100 participants were having direct contact with cats and 66/100 have a frequent raw meat consumption, neither direct cats contact nor raw meat consumption had statistically significant association with seropositivity to T. gondii (P. value =0.052 and 0.565, respectively).

microbiology↗

Genetic analysis of TP53 gene mutations in exon 4 and exon 8 among esophageal cancer patients in Sudan

BackgroundEsophageal carcinoma (EC) represents the 1st rank among all gastrointestinal cancers in Sudan. Despite little publications, there is a deep absence of literature about the molecular pathogenesis of EC considering TP53 gene from Sudanese population.\n\nAimsIn this study, we performed the expression analysis on p53 protein level by immunohistochemical staining and examined its overexpression with p53 mutations in exons 4 and 8 among esophageal cancer patients in Sudan.\n\nMaterial and MethodsFixed tissue with 10% buffered formalin was stained by Hematoxlin and Eosin (H&E), Alcian blue-Periodic Acid Schiff (PAS) and Immunohistochemistry stain. PCR-RFLP was used to study the frequencies of p53 codon 72 R/P polymorphism. Conventional PCR and sanger sequencing were applied for exon 4 and exon 8. Then detection and functional analysis of SNPs and mutations were performed using various in bioinformatics tools.\n\nResultNuclear accumulations for p53 protein was detected in all of the esophageal carcinomas examined while no accumulations were observed in normal control sections. Four patients with immune-positive for p53 showed no mutations in p53 gene (exon4 and exon8). The incidence of the homozygous mutant variant Pro/Pro was higher in esophageal cancerous patients comparing to healthy control subject 20(71. 4%) vs. 1(10%), respectively (p=0.0026). In exon 4, no mutation was detected other than NG_017013.2:g. 16397C>G. While in exon 8, g.18783-18784AG>TT, g.18803A>C, g.18860A>C, g.18845A>T and g.18863_ 18864 InsT were observed.\n\nConclusionwe found a significant association between the overexpression of TP53 protein and mutation in exon 4 and 8. A silent mutation P301P was detected in all of examined cases. Two patients who diagnosed with small cell sarcoma have shared the same mutations in exon8. Further studies with large sample size are required to demonstrate the usefulness of these mutations in the screening of EC especially SCCE.

cancer biology↗