Feyissa Challa Waka

Mr. Feyissa Challa Waka


Research Focus & Metrics

Academic Career Length

13Years (2014-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 September 2021 in Computer Methods and Programs in Biomedicine
Verified
Journal Article
Closed access
Federico CabitzaFederico Cabitza
Federico Cabitza
ACAndrea Campagner
Andrea Campagner
FSFelipe Soares
Felipe Soares
LGLuis García de Guadiana-Romualdo
Luis García de Guadiana-Romualdo
FWFeyissa Challa Waka
Feyissa Challa Waka
ACAnna Carobene
Anna Carobene

1 February 2020 in Journal of Inflammation Research
Verified
Journal Article
Open access
PDF file
ZGZeleke Geto
Zeleke Geto
MMMeseret Molla
Meseret Molla
FWFeyissa Challa Waka
Feyissa Challa Waka
YBYohannes Belay
Yohannes Belay
TGTigist Getahun
Tigist Getahun
Mitochondria are organelles with highly dynamic ultrastructure maintained by flexible fusion and fission rates governed by Guanosine Triphosphatases (GTPases) dependent proteins. Balanced control of mitochondrial quality control is crucial for maintaining cellular energy and metabolic homeostasis; however, dysfunction of the dynamics of fusion and fission causes loss of integrity and functions with the accumulation of damaged mitochondria and mitochondrial deoxyribose nucleic acid (mtDNA) that can halt energy production and induce oxidative stress. Mitochondrial derived reactive oxygen species (ROS) can mediate redox signaling or, in excess, causing activation of inflammatory proteins and further exacerbate mitochondrial deterioration and oxidative stress. ROS have a deleterious effect on many cellular components, including lipids, proteins, both nuclear and mtDNA and cell membrane lipids producing the net result of the accumulation of damage associated molecular pattern (DAMPs) capable of activating pathogen recognition receptors (PRRs) on the surface and in the cytoplasm of immune cells. Chronic inflammation due to oxidative damage is thought to trigger numerous chronic diseases including cardiac, liver and kidney disorders, neurodegenerative diseases (Parkinson’s disease and Alzheimer’s disease), cardiovascular diseases/atherosclerosis, obesity, insulin resistance, and type 2 diabetes mellitus.

21 June 2014 in BMC Research Notes
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Journal Article
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MAMolla Abebe
Molla Abebe
SKSamuel Kinde
Samuel Kinde
GBGetachew Belay
Getachew Belay
AGAtsbeha Gebreegziabxier
Atsbeha Gebreegziabxier
FWFeyissa Challa Waka
Feyissa Challa Waka
BTBelete Tegbaru
Belete Tegbaru
The effects of highly active antiretroviral therapy (HAART) on glucose and lipid metabolism among sub-Saharan Africans, for whom access to antiretroviral therapy is expanding, remain largely unknown. Therefore, the aim of this study was to assess antiretroviral treatment associated hyperglycemia and dyslipidemia among HIV infected patients at Burayu health center, Addis Ababa, Ethiopia.

11 December 2021 in BMC Psychiatry
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Journal Article
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FWFeyissa Challa Waka
Feyissa Challa Waka
TGTigist Getahun
Tigist Getahun
MSMeron Sileshi
Meron Sileshi
ZGZeleke Geto
Zeleke Geto
TKTeshome S. Kelkile
Teshome S. Kelkile
STSolomon Teferra
Solomon Teferra
Background: Globally, the prevalence of metabolic syndrome (MetS) is higher among patients with schizophrenia than the general population, and this leads to higher morbidity and mortality in this population. The aim of this study was to investigate the MetS prevalence among patients with schizophrenia in Ethiopia. Methods: We conducted a cross-sectional analysis of baseline data of 200 patients with schizophrenia recruited from Amanuel Mental Specialized Hospital, Addis Ababa, Ethiopia. Lipid profile and blood glucose levels were measured using Roche Cobas 6000 clinical chemistry analyzer. The prevalence of MetS was assessed based on National Cholesterol Education Program Adult Treatment Panel III criteria. Patients’ demographic information, clinical and laboratory data, lifestyle habits, particularly smoking and Khat chewing, were evaluated vis-à-vis MetS. Results: The overall prevalence of MetS in patients with schizophrenia was 21.5% (17.1% male, 29.6% female) where Low HDL-cholesterol value was the most common metabolic disorders components in both males and females subgroups. In the multivariate analysis, the positive and negative symptoms score (PANSS, AOR = 1.03, 95% CI 1.001–1.054) was associated factors with MetS. Conclusion: In Ethiopia, patients with schizophrenia were found to have higher prevalence of MetS than the general population. Physicians/health care providers should routinely screen patients with schizophrenia for MetS and initiate timely management of those who develop the syndrome to reduce the health cost from caring for NCDs, improve the patients’ quality of life, and prevent premature mortality.

1 April 2021 in International Journal of General Medicine
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Journal Article
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MMMeseret Molla
Meseret Molla
ABAbebe Bekele
Abebe Bekele
DMDaniel Seifu Melka
Daniel Seifu Melka
MTMaria Degef Teklemariam
Maria Degef Teklemariam
FWFeyissa Challa Waka
Feyissa Challa Waka
ZGZeleke Geto
Zeleke Geto
Background: Hyperuricemia is related not only to an increased risk of gouty arthritis but also to an increased risk of cardiovascular diseases, resistant hypertension, insulin resistance and progression of type 2 diabetes mellitus. However, to the best of our knowledge, the prevalence of hyperuricemia and its associated factors have rarely been assessed in Ethiopian populations. Therefore, this study aimed to determine the prevalence of hyperuricemia and its associated factors among adult staff members of the Ethiopian Public Health Institute. Methods: An institution-based cross-sectional study was conducted from July 1 to October 28, 2018. A total of 402 study participants were selected using a simple random sampling technique. An interviewer-administered questionnaire was used to collect the data. A blood sample of approximately 5 mL was collected from each study participant after overnight fasting through standardized methods for biochemical tests, and analyses were carried out with an automated COBAS 6000 analyzer. Data analysis was performed by SPSS version 20 software. The factors associated with the outcome variable were identified by bivariable and multivariable logistic regression analyses, and a p value < 0.05 was used to declare statistical significance. Results: The mean age of the study participants was 37.13± 10.5 (mean ± SD), and 51.5% of the participants were male. The overall prevalence of hyperuricemia (> 5.7 mg/dL for females and > 7 mg/dL for males) was found to be 31.0%. The multivariable logistic analysis revealed that age (AOR=1.59, 95% CI 1.01– 2.78), sex (AOR=1.66, 95% CI 1.02– 2.70), cigarette smoking (AOR=2.05, 95% CI 1.01– 4.19) and serum low-density lipoprotein (LDL) (AOR=1.70, 95% CI 1.01– 2.87) were significantly associated with hyperuricemia. Conclusion: The prevalence of hyperuricemia was relatively high compared to similar studies. Early screening for hyperuricemia in the general population, especially in those who are smokers, of older age and with high serum LDL levels, is vital to control its adverse effects at an early stage.

30 December 2015 in Nutrition & Metabolism
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Journal Article
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KBKifle Habte Balcha
Kifle Habte Balcha
AAAbdulaziz Adish
Abdulaziz Adish
DZDilnesaw Zerfu
Dilnesaw Zerfu
AKAweke Kebede
Aweke Kebede
TMTibebu Moges
Tibebu Moges
KBKaleab Baye
Kaleab Baye
Better macro and micro nutrient status and their adequate intake by the athletes have great role in balancing losses associated with strenuous exercise, then for better performance. The objective of this study was to determine iron, folate and vitamin B12 status of Ethiopian professional athletes. A cross sectional study was conducted using a point time convenient sample of 101 male and female Ethiopian professional athletes of different distance categories in the period of February to April 2014. Biochemical samples, detail health and exercise related interview, performance data, 24 h dietary diversity and weekly food frequency were collected. The low, medium and high dietary diversity terciles were 36.1, 60.9 and 3.3 % respectively. The mean ± Sd of dietary diversity was 5.44 ± 1.8. Prevalence of iron overload (Serum ferritin >200 μg/L) was 11 %, whereas that of anemia (Hb < 12 g/dL), iron deficiency (ferritin < 12 μg/L) and moderate folate deficiency (210 pg/ml). The iron status of male athletes was significantly different by running-distance categories. In contrast, such difference was absent for female athletes. Performance of the athletes was associated with their red blood cell count (RBC) at p = 0.03. The high performer athletes exhibited high mean value of micronutrient status and hematological variables than their counter parts. However, the RBC of the athletes was the only parameter whose association was statistically significant. The observed gender difference in the association of running-distance category with iron and folate in this study needs further investigation. Given the 11 % iron overload in the present study; there is a need of awarance creation activities and diet intervention in the athletics federation, the athletes and the coaches in order not aggravate the present overload. Prescription of supplements such as iron-folate, multivitamins and minerals should not be based on broad spectrum rather it should be based on recent history of confirmed deficiency, clinical signs and/or laboratory testing to prevent trace element toxicity.