Geofrey Ouma Maloba

Mr. Geofrey Ouma Maloba

orcid

Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

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

Representative Publications

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5 February 2024 in Journal of Parasitology Research
Verified
Journal Article
Open access
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EBERICK BARSA
ERICK BARSA
BIBriston Indieka
Briston Indieka
NSNathan Shaviya
Nathan Shaviya
EOEZRA KOMBO OSORO
EZRA KOMBO OSORO
GMGeofrey Ouma Maloba
Geofrey Ouma Maloba
TWTom Were
Tom Were
Background. Giardia duodenalis causes sporadic or epidemic infections in humans. The parasite comprises assemblages A-H with A and B subdivided further into AI-IV and BI-IV subassemblages. Attempts aimed at linking these genotypes with sources and gastrointestinal manifestations of the infection are largely unexplored in rural communities. Methods. In this cross-sectional study, G. duodenalis infection was genotyped and associated with sources, and gastrointestinal signs and symptoms of the disease among residents of Busia County, a rural setting in western Kenya. Demographic and clinical information were captured using standardized forms. Stool specimens were obtained from the patients and used for genotyping at glutamate dehydrogenase and triose-phosphate isomerase loci using the polymerase chain reaction and restriction fragment length polymorphism. Results. Assemblage B (63.6%) was the most prevalent G. duodenalis infection, while A (20.5%) and mixed A/B (15.9%) were also detected. Among the subassemblages, AI (5.7%), AII (8.0%), AIII (3.4), BIII (30.7%), and BIV (17.0%) were diagnosed including the mixed AII/BIII (15.9%), BIII/BIV (15.9%), AI/AIII (2.3%), and AI/AII (1.1%) infections. Binary logistic regression indicated associations for assemblage A with stomach upset, history of nitroimidazole treatment, and residing in a homestead with cattle and B with years, history of eating outdoors, vomiting, steatorrhea, and residing in a homestead with cattle, goats, and poultry ( for all). Among the subassemblages, associations were found for AI with residing in a homestead having cattle and history of nitroimidazole treatment, BIII with residing in a homestead having cattle and poultry, and BIV with steatorrhea ( for all). Altogether, this study illustrates that G. duodenalis assemblage B and subassemblage BIII are the most predominant and are linked to years, gastrointestinal manifestations, and living in a homestead with domestic ruminants and poultry. Conclusion. Targeted mass prophylactic treatment of domestic animals and utilization of gastrointestinal presentations, years, and a history of nitroimidazole use are useful in the diagnosis and prevention of giardiasis among residents of rural communities.

Verified
Journal Article
Open access
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GMGeofrey Ouma Maloba
Geofrey Ouma Maloba
TWTom Were
Tom Were
EBERICK BARSA
ERICK BARSA
Nasreldeen Mohamed Karshom AdamNasreldeen Mohamed Karshom Adam
Nasreldeen Mohamed Karshom Adam
ARSHI ARSHIARSHI ARSHI
ARSHI ARSHI
Ferenc GallyasFerenc Gallyas
Ferenc Gallyas
Resistance of breast cancers to chemotherapy remains a global challenge to date. Drug combination studies between anti-cancer agents are increasingly becoming therapeutic strategies, geared towards alleviating breast cancers. Previously, 2-deoxyglucose has been shown to target and interrupt glycolysis. Available evidence also suggests that diclofenac, which was originally designed as a pain reliever, could inhibit the proliferation of breast cancer cells. However, the reverse Warburg effect and other metabolic reprogramming mechanisms in breast cancers limit the pharmacological application of both 2-deoxyglucose and diclofenac as mono-therapeutic agents. The present study explores the additive anti-cancer effects of 2-deoxyglucose and diclofenac sodium on breast cancer cells. In this study, MDA-231 and MCF7 cells were treated with 2-deoxyglucose and diclofenac sodium in single and combination doses before being evaluated for viability, cell growth, reactive oxygen species, apoptotic and necrotic phases, and migration abilities. Additionally, immunoblotting of pro-apoptotic proteins, Caspase-3 and Caspase-9, and a hypoxia-inducible factor-1 alpha, was also performed. The results showed that combination treatments of the cells with the drugs exhibited additive anti-cancer effects by limiting proliferation, enhancing cytotoxic reactive oxygen species generation, enhancing apoptosis and necrosis, limiting colony formation and expansion of cells, and inhibiting cell migration. The degrees of cytotoxicity of combined treatments were almost similar in both cell lines, although with minimal differences. Put together, these results reveal the novel synergistic effects of 2-deoxyglucose and diclofenac sodium on breast cancer cells, hence potentially elevating their pharmacological profile in the overall breast cancer therapy.
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29 December 2025 in Journal of Health, Population and Nutrition
Verified
Journal Article
Open access
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TWTom Were
Tom Were
EBERICK BARSA
ERICK BARSA
BIBriston R. Indieka
Briston R. Indieka
JWJosephine Wambani
Josephine Wambani
GMGeofrey Ouma Maloba
Geofrey Ouma Maloba
VBValentine Budambula
Valentine Budambula
Giardiasis is a common intestinal disease caused by the protozoan parasite Giardia duodenalis. The transmission of giardiasis is influenced by a complex in

29 November 2025 in Cancers
Verified
Journal Article
Open access
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Nasreldeen Mohamed Karshom AdamNasreldeen Mohamed Karshom Adam
Nasreldeen Mohamed Karshom Adam
EVEszter Vámos
Eszter Vámos
HAHamid Ahmadi
Hamid Ahmadi
GMGeofrey Ouma Maloba
Geofrey Ouma Maloba
ARSHI ARSHIARSHI ARSHI
ARSHI ARSHI
Ferenc GallyasFerenc Gallyas
Ferenc Gallyas
Background: Breast cancer is the most prevalent cancer among women worldwide, and therapeutic resistance represents a major clinical challenge. Mitochondria are key regulators of cancer metabolism, redox homeostasis, and apoptosis, making them potential therapeutic targets. Aim: This study aimed to evaluate the effects of combined Akt and PARP inhibition on mitochondrial metabolic function, energy production, and apoptosis in breast cancer cells. Methodology: The SRB assay was used to compare the viability of MDA-MB-231 and MCF7 cells. A colony formation assay was conducted to assess the capacity of individual cells to develop colonies, and ROS production was quantified using DHR123. Flow cytometric analysis was performed to evaluate cell death, and the Seahorse Mito stress test was used to measure ATP production and essential mitochondrial parameters. Results: The combination of Akt and PARP inhibitors impaired oxidative phosphorylation without inducing a compensatory shift to glycolysis, leading to reduced ATP production, increased ROS generation, and apoptotic cell death in breast cancer cells compared to monotherapy. Conclusions and Recommendations: These findings indicate that the combination of olaparib and capivasterib is a promising therapeutic strategy for breast cancer. Furthermore, evaluation of in vivo toxicity and antitumor effectiveness is essential to validate its potential.