NRU :: Browsing by Author "Othieno, Emmanuel"

Browsing by Author "Othieno, Emmanuel"

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Hormonal Receptors, Human Epidermal Growth Factor Receptor-2 and Triple Negative Immunohistochemical Typing in Women with Breast Cancer in Kampala, Uganda
(International Journal of Women's Health, 2020) Mlole, Angela T.; Yahaya, James J.; Othieno, Emmanuel; Kalungi, Sam; Okwi, Andrew L.
The expression of estrogen and progesterone receptors (ER and PR) and human epidermal growth factor receptor-2 (HER2) has been reported to have an invaluable prognostic role. The aim of this study was to determine the expression of ER, PR and HER2 in women with breast cancer (BC) in Kampala, Uganda. Methods: Expression of ER, PR and HER2 was determined immunohistochemically. Logistic regression was performed to determine the effect of the independent factors in predicting the risk of not expressing the breast markers. A two-tailed p<0.05 was regarded to be statistically significant. Results: ER, PR and HER2 were expressed in 53.4%, 46.6% and 18.5%, respectively. ER and PR co-expression was present in 42.7% and 37.9% patients had triple negative breast cancer (TNBC). Age was an independent predictor of expression of ER (AOR = 0.18, 95% CI = 0.062–0.541, p = 0.002) and PR (AOR = 0.35, 95% CI = 0.129–0.968, p = 0.043). Conclusion: The majority of patients in this study had less than 50 years with high tumour grade. Interestingly, most of them had high expression of HER2 with TNBC which are molecular subtypes of BC with poor prognosis. Age was an independent predictor of expression of both ER and PR.
Identification of Echinococcus granulosus strains using polymerase chain reaction–restriction fragment length polymorphism amongst livestock in Moroto district, Uganda
(Onderstepoort Journal of Veterinary Research, 2016) Chamai, Martin; Omadang, Leonard; Erume, Jospeh; Ocaido, Michael; Oba, Peter; Othieno, Emmanuel; Bonaventure, Straton; Kitibwa, Annah
A descriptive study was conducted to identify the different strains of Echinococcus granulosus occurring in livestock in Moroto district, Uganda. Echinococcus cysts from 104 domestic animals, including cattle, sheep, goats and camels, were taken and examined by microscopy, polymerase chain reaction with restriction fragment length polymorphism and Sanger DNA sequencing. Echinococcus granulosus genotypes or strains were identified through use of Bioinformatics tools: BioEdit, BLAST and MEGA6. The major finding of this study was the existence of a limited number of E. granulosus genotypes from cattle, goats, sheep and camels. The most predominant genotype was G1 (96.05%), corresponding to the common sheep strain. To a limited extent (3.95%), the study revealed the existence of Echinococcus canadensis G6/7 in three (n = 3) of the E. granulosus-positive samples. No other strains of E. granulosus were identified. It was concluded that the common sheep strain of Echinococcus sensu stricto and G6/7 of E. canadensis were responsible for echinococcal disease in Moroto district, Uganda.
Immunohistochemical and other prognostic factors in B cell non Hodgkin lymphoma patients, Kampala, Uganda
(BMC Clinical Pathology, 2009) Tumwine, Lynnette K.; Agostinelli, Claudio; Campidelli, Cristina; Othieno, Emmanuel; Wabinga, Henry; Righi, Simona; Falini, Brunangelo; Piccaluga, Pier Paolo; Byarugaba, Wilson
Non Hodgkin lymphomas are the most common lymphomas in Uganda. Recent studies from developed countries have shown differences in survival for the different immunophenotypes. Such studies are lacking in Africa where diagnosis is largely dependent on morphology alone. We report immunohistochemical and other prognostic factors in B cell non Hodgkin lymphoma patients in Kampala, Uganda. Methods: Non Hodgkin lymphoma tissue blocks from the archives of the Department of Pathology, Makerere University College of Health Sciences, Kampala, Uganda, from 1991-2000, were sub typed using haematoxylin and eosin, Giemsa as well as immunohistochemistry. Using tissue micro array, 119 biopsies were subjected to: CD3, CD5, CD10, CD20, CD23, CD30, CD38, CD79a, CD138, Bcl-6, Bcl-2, IRTA-1, MUM1/IRF4, Bcl-1/cyclin D1, TdT, ALKc, and Ki-67/Mib1. Case notes were retrieved for: disease stage, chemotherapy courses received and retrospective follow up was done for survival.
Knowledge, Attitude, and Beliefs of Communities and Health Staff about Echinococcus granulosus Infection in Selected Pastoral and Agropastoral Regions of Uganda
(Journal of parasitology research, 2018) Othieno, Emmanuel; Ocaido, Michael; Mupere, Ezekiel; Omadang, Leonard; Oba, Peter; Okwi, Andrew Livex
According to World Health Organization (WHO) [1] cystic echinococcosis (CE) is a neglected zoonotic infection found throughout the world and is associated with high morbidity and mortality in poor resource countries especially in pastoral communities in Africa (Macpherson et al. [2]). In Uganda, the prevalence ofCE has been found to vary between pastoral and agropastoral communities, with pastoral communities being at higher risk than agropastoral communities (Othieno et al. [3]). High prevalence of CE has equally been reported in livestock (Chamai et al. [4] and Magambo et al. [5]) and in dogs (Inangolet et al. [6] and Oba et al. [7]). Cystic echinococcosis is caused by a species of Echinococcus, namely, Echinococcus granulosus, whose definitive hosts are the carnivores such as dogs. Usually dogs become infected with Echinococcus granulosus by eating infected internal organs such as liver and lungs from dead animals that contain tape worm embryos. The dogs pass out tapeworm eggs in their stool, which can cause infection in other animals and/or in humans who accidentally swallow the eggs. In humans, Echinococcus granulosus forms slow-growing cysts (called hydatid cysts) in different organs of the body which can be very difficult to remove or treat in some cases (Nahmias et al. [8]).
Knowledge, attitudes and practices towards cystic echinococcosis in livestock among selected pastoral and agro-pastoral communities in Uganda
(Tropical animal health and production, 2018) Omadang, Leonard; Chamai, Martin; Othieno, Emmanuel; Okwi, Andrew; Olaki Inangolet, Francis; Ejobi, Francis; Oba, Peter; Ocaido, Michael
A cross-sectional study was done from March 2013 to May 2014 to assess knowledge, attitudes, and practices towards cystic echinococcosis (CE) or hydatidosis among selected pastoral and agro-pastoral communities in Uganda. A structured questionnaire was administered to 381 respondents. Multivariate logistic regression analysis was done to find the relationship between knowledge about CE and factors such as age, sex, and level of education across all regions. The odds ratio and confidence interval were used to determine the difference in responses across regions. It was shown that age above 36 years was significantly (p < 0.001) associated with awareness about CE in livestock. Likewise, uneducated (p < 0.0001) and agro-pastoralists (p = 0.01) were significantly less knowledgeable than the educated and pastoralists across all regions. The overall knowledge towards CE in livestock was low 17.8% (95% CI = 14.0–21.6). Dog ownership was high and they never dewormed their freely roaming dogs. Dogs shared water with livestock. In conclusion, knowledge about CE in livestock was low across all regions. Therefore, public health education and formulation of policies towards its control by the relevant stakeholders should be done. Also, the true prevalence of CE in livestock needs to be done so that the magnitude and its public health significance are elucidated
Prevalence and risk factors of Echinococcus granulosus infection in dogs in Moroto and Bukedea districts in Uganda
(Tropical animal health and production, 2016) Oba, Peter; Ejobi, Francis; Omadang, Leonard; Chamai, Martin; Okwi, Andrew Livex; Othieno, Emmanuel; Inangolet, Francis Olaki; Ocaido, Michael
A cross sectional study was conducted in Moroto and Bukedea districts of Uganda from May to September 2013 to determine the prevalence and risk factors of Echinococcus granulosus infection in dogs. Fresh dog faecal samples were collected, preserved in 70 % ethanol, and later screened for presence of taeniid eggs using zinc chloride floatation method. Positive samples were confirmed by a copro-PCR (polymerase chain reaction) for E. granulosus using NADH dehydrogenase sub-unit 1 gene (NADH1) as a target molecular marker. Structured questionnaires and focus group discussions were used to collect quantitative and qualitative data for risk factor identification. Study sub-counties were selected by simple random sampling. Overall apparent prevalence of taeniid infection in dogs of 14.9 % (39/261, confidence interval 10.6–19.2) in both districts was recorded using the faecal floatation test. The sensitivity of the faecal floatation test was found to be 78 % (25/32), while the specificity was 93 % (215/229). Copro-PCR results revealed a true prevalence of 14.4 % (9.91–19.0, 95 % CI) in dogs in Moroto district and 7.4 % (2.14–12.60, 95 % CI) in Bukedea district. The overall true prevalence of cystic echinococcosis (CE) was 12.2 % (8.70–15.76, 95 % CI) in both districts. The major risk factors identified using logistic regression were uncontrolled access of dogs to animal slaughter facilities, higher cattle herd sizes and lack of knowledge about the disease. It was recommended that restricting dog access to infected tissues and public health education about epidemiology of CE should be done.
Prevalence of Cancerous and Pre-malignant Lesions of Cervical Cancer and their Association with Risk Factors as seen among women in the Regions of Uganda
(Journal of Clinical and Laboratory Medicine, 2017) Okwi, Andrew Livex; Wandabwa, Julius; Okoth, Anthony; Othieno, Emmanuel
Cervical cancer is the second cause of death among women in Uganda. Little is known about the prevalence and risk factors associated with cancerous and pre-malignant lesions of cervical cancer in the regions of Uganda. Methods: A cross sectional survey was carried out in the regions of Uganda. Women who reported to Gynecology Clinics were consecutively screened for cancerous and pre-malignant lesions using the Papanicolaou method. A structured questionnaire was used to collect data on risk factors. The power of associations between the risk factors and cancerous and pre-malignant lesions of cervical cancer were determined using the odds ratio and 95% confidence interval. The p value <0.05 was considered as statistically significant. Results: Prevalence of 1.2% of cancerous and 11.2% of pre-malignant lesions was detected in all the regions. The risk factors for both cancerous and premalignant lesions were: Early coitus (OR 3.03, CI:1.01.10-10.05; p<0.024) and (OR 1.41 CI:0.98-2.20; p<0.032) respectively, sexually transmitted infections (STDs) (OR 6.07, CI: 1.77-27.22; p<0.001) and (OR 6.52, CI:4.33-9.10; p<0.001) respectively, polygamy (OR 3.13, CI: 0.98-11.77; p<0.027) and (OR 2.74, CI:1.71-4.43; p<0.001) correspondingly, alcohol (OR 3.72, CI: 1.19-13.77; p<0.011) and (OR 1.71, CI:1.20-2.47; p<0.001) respectively, increased sexual partners (OR 8.03, CI:2.20-53.1; p<0.001) and (OR 3.69, CI:2.51-5.48; p<0.001) respectively. Smoking and high parity were risk factor for only cancerous lesions. Although there was no statistical difference between women who had married more than once and those who had single marriage , the likelihood that women who had married more than once would get cancerous and premalignant lesions was high (OR 1.18, p<0.389) and (OR 1.36, p<0.122) respectively. Conclusion and Recommendations: Age at 1st coitus, STDs, polygamy, smoking, increased sexual partners and alcohol were the risk factors for cancerous and premalignant lesions. Sensitization of the communities and regularly screening for cervical cancer should be encouraged for its control and management.
Prevalence of Cystic Echinococcosis in Selected Pastoral and Agro-Pastoral Districts of Uganda
(Annals of Clinical Cytology and Pathology, 2016) Othieno, Emmanuel; Okwi, Andrew; Mupere, Ezekiel; Bimenya, Gabriel; Zeyhle, Eberhard; Oba, Peter; Chamai, Martin; Omadang, Leonard; Inangolet, Francis O.; Siefert, Ludwing; Ejobi, Francis; Ocaido, Michael
A cross sectional ultrasound screening survey for human cystic echinococcosis (CE) was undertaken in the pastoral dist ricts of Moroto, Napak, Nakapiripirit and Amudat in Karamoja sub-region; and agro-pastoral communities of Teso region, in the districts of Kumi and Bukedea. Other areas of the survey included: Nakasongola in Central region and Kasese district in the Western region of Uganda. A total of 3,636 participants were screened and 67 cases (1.84%) had CE. The organ most affected was the liver 61.2% (41/67), followed by the kidney 17.9% (12/67), spleen 10.44% (7/67), omentum 8.95% 6/67) and lungs 1.5% (1/67). All districts screened had positive cases with the highest prevalence occurring in Napak (3.9%) and the lowest in Nakapiripirit (0.45%). The prevalence of CE (0.5±0.3%) in South Karamoja (Amudat and Nakapiripirit) was significantly lower (P<0.001, χ2= 18.98) than in Central Karamoja (Napak and Moroto, 3.32±1.3%). The prevalence of CE in Teso region was found to be 1.21±0.8%, Kasese 2.15±1.2 % and Nakasongola 2.7±1.3%. The prevalence in south Karamoja was lowest. Overall, there was no significant difference (P<0.05; χ2= 0.12) in prevalence between males (1.7%) and females (1.9%). However, in Karamoja females (2.2% CI: 0.8-3.6) were more likely to be infected (χ2= 16; P<0.05) with CE than males (0.9% CI: 0.1-1.7). Sixty four percent (n=43) of the cysts detected were viable.
The reference range of serum magnesium substance concentration among healthy young adults at Makerere University College of Health Sciences 2012
(Tanzania Journal of Health Research, 2012) Bimenya, Gabriel S.; Okot, Julius; Othieno, Emmanuel; Kyokunda, Lynnette T.; Ibingira, Charles; Okwi, Andrew L.
Magnesium is the second most abundant intracellular cation, with only a small proportion of the body’s content being in the extracellular fluid. It is required for the active transport of other cations such as calcium, sodium and potassium across the membrane by active transport system. It is also needed for many intracellular metabolic pathways. This study was carried to establish the reference intervals for serum magnesium substance concentration among healthy medical students in Uganda.
Risk factors associated with cystic echinococcosis in humans in selected pastoral and agro-pastoral areas of Uganda
(Int J One Health, 2017) Othieno, Emmanuel; Okwi, Andrew Livex; Mupere, Ezekiel; Zeyhle, Eberhard; Oba, Peter; Chamai, Martin; Omadang, Leonard; Olaki Inangolet, Francis; Siefert, Ludwing; Ejobi, Francis; Ocaido, Michael
It was to determine the risk factors responsible of occurrence of cystic echinococcosis (CE) of humans in the pastoral and agro-pastoral (PAP) in Uganda. Materials and Methods: A cross-sectional study was conducted in districts: Moroto, Napak, Nakapiripirit and Amudat in Karamoja region; in agro-pastoral communities of Teso region, in the districts of Kumi and Bukedea; Nakasongola district in Central region and in Kasese district in the Western region. People were subjected to voluntary ultrasound screening for CE. Those found positive to CE on ultrasound screening were interviewed using a special designed form to find out the probable predisposing factors for acquisition of CE infection. Predisposing factors considered were location, age, sex, dog ownership, occupation, water source, and religion. Univariate and multivariate logistic regression analysis was performed to identify key risk factors. Results: In Karamoja region, being female, age beyond 40 years and open spring water sources were the risk factors. While for Nakasongola age beyond 40 years was a risk factor. In Kasese dog ownership, age >60 years and being a Muslim were risk factors. In Teso region dog ownership and age >60 years were the risk factors. Conclusion: Being a pastoralist, a female, increasing age beyond 40 years, open spring water sources, dog ownership and being a Muslim were the risk factors for CE in PAP areas in Uganda.

Browsing by Author "Othieno, Emmanuel"

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