192 results match your criteria: "North-West University: Potchefstroom Campus[Affiliation]"

The genus Grewia are known for their medicinal properties. We isolated and characterized five endophytic fungi from Grewialasiocarpa for in vitro antibacterial and antioxidant activities. Five [Aspergillus fumigatus (MK243397.

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Introduction: An adequate health workforce is one of the cornerstones of a healthy nation. Over the last two decades, Africa has gained momentum in mitigating critical health workforce gaps, but urgent actions are still needed to accelerate progress towards universal health coverage and ensuring health security. This analysis provides an overview of the health workforce in the WHO African Region for the last decade.

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Protocol for a low-volume, direct analysis urine preparation procedure for non-targeted GC-MS metabolomics.

STAR Protoc

December 2024

Focus Area Human Metabolomics, North-West University (Potchefstroom Campus), Potchefstroom, North West 2520, South Africa. Electronic address:

We present a low-volume, direct analysis protocol for non-targeted gas chromatography-mass spectrometry (GC-MS) metabolomics, using 100 μL of urine. The steps include sample collection, stock solution preparation, metabolite extraction, two-step derivation with a drying phase, and analysis via two-dimensional GC time-of-flight MS (GCxGC-TOFMS). This protocol improves the efficiency and thoroughness of urinary metabolite analysis, contributing to advancements in metabolomics research, disease diagnosis, and biomarker discovery.

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Article Synopsis
  • The study reports the genome of a novel strain of Klebsiella pneumoniae (Cow102) isolated from raw cow milk in Nigeria, highlighting its potential food safety risks due to multidrug resistance and virulence factors.
  • The genome length is over 5.3 million base pairs with various coding sequences, and it shows a new allelic profile (ST6914), indicating ongoing evolution within the species.
  • The findings emphasize the need for genomic surveillance in agricultural settings to monitor emerging strains that could pose public health threats.
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The draft genome of a previously documented potential probiotic strain GM93m3 from raw goat milk in Nigeria is reported. The total genome size was 2,447,229 with 46 contigs and G+C content of 44.86%.

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Article Synopsis
  • - The study investigates the unknown reasons behind treatment failure in tuberculosis (TB) by using a specialized H NMR technique to analyze TB drug levels and their metabolites in the urine of patients.
  • - Urine samples were taken from patients at different stages of TB treatment and analyzed to compare drug concentrations between those who were cured and those who experienced treatment failure.
  • - Results indicated that metabolites of isoniazid (INH) were higher in patients who did not respond effectively to treatment, suggesting that factors beyond genetics, like environmental influences and variations in metabolic pathways, may play a significant role in treatment failure.
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Purpose: Hypertension, obesity, hyperlipidemia, and type 2 diabetes contribute primarily to noncommunicable disease deaths and together with human immunodeficiency virus contribute largely to mortality in South Africa. Our longitudinal study provides the necessary data and insights over a 10-year period to highlight the areas where improved management is required in urban and rural localities.

Methods: This study included 536 rural and 387 urban Black participants aged 32 to 93 years from the North-West province, South Africa.

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This paper reports on Environmental and Social Impact Assessment (ESIA) public participation in Malawi with a focus on the role of women from matrilineal and patrilineal marriage systems. Six rural ESIA projects are explored of which three are in areas of patrilineal and three are in areas of matrilineal systems. Participation space was found to be consistently dominated by men, with no obvious differences between both systems.

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Some species have been shown to have pharmacological properties such as activity against cancer, and it is also used as a traditional herbal medicine in many rural parts of the world. The (3-(4,5-dimethylthiazol-2-Yl)-2,5-diphenyltetrazolium bromide assay was used as a screening tool to determine the approximate cell viability inhibitory concentrations of methanol and aqueous crude extracts of spp. The extracts were screened using small-cell lung cancer (H69V), hepatocellular carcinoma (HepG2/C3A) and non-cancerous kidney cells (Vero) cell lines.

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We describe a competitive colorimetric assay that enables rapid and sensitive detection of galactose and reduced nicotinamide adenine dinucleotide (NADH) via colorimetric readouts and demonstrate its usefulness for monitoring NAD+-driven enzymatic reactions. We present a sensitive plasmonic sensing approach for assessing galactose concentration and the presence of NADH using galactose dehydrogenase-immobilized gold nanostars (AuNS-PVP-GalDH). The AuNS-PVP-GalDH assay remains turquoise blue in the absence of galactose and NADH; however, as galactose and NADH concentrations grow, the reaction well color changes to a characteristic red color in the presence of an alkaline environment and a metal ion catalyst (detection solution).

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Objectives: Empirical data on the impact of research-to-policy interventions are scant, with the few attempts mainly focusing on ensuring policymakers' timely access to evidence and evidence-informed dialogs.

Methods: This article reflects on how the Thanzi Programme cultivates an approach of research-to-policy engagement in health economics. The program is structured around 3 interrelated pillars comprising research evidence generation, capacity and capability building, and research-and-policy engagement.

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Background: Electronic continuous surveillance databases are ideal for monitoring antibiotic use (ABU) in hospitalised patients for antibiotic stewardship programmes (ASP). However, such databases are scarce in low-resource settings. Point prevalence surveys (PPS) are viable alternatives.

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Economic and social development, the state of the environment and a propensity for disasters are closely intertwined. Therefore, environmental policy integration (EPI) across development and disaster management (DM) policies and plans is important. Pakistan as a country is highly vulnerable to climate-induced environmental changes and associated disasters.

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Increased arterial stiffness is related to early vascular aging and is an independent predictor for cardiovascular disease and mortality. Molecular mechanisms underlying increased arterial stiffness are largely unexplored, especially at the proteome level. We aimed to explore the relationship between pulse wave velocity and urinary proteomics.

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Loss of attachment promotes proline accumulation and excretion in cancer cells.

Sci Adv

September 2023

Human Metabolomics, Faculty of Natural and Agricultural Sciences, North-West University (Potchefstroom Campus), 11 Hoffman Street, Potchefstroom 2531, South Africa.

Previous studies have revealed a role for proline metabolism in supporting cancer development and metastasis. In this study, we show that many cancer cells respond to loss of attachment by accumulating and secreting proline. Detached cells display reduced proliferation accompanied by a general decrease in overall protein production and de novo amino acid synthesis compared to attached cells.

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First COVID-19 intra-action review: Experience from Kenya.

J Glob Health

August 2023

Emergency Preparedness and Response Programme - Nairobi Hub, World Health Organization Regional Office for Africa, Nairobi, Kenya.

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Drought and heat stress are major abiotic stress factors that limit photosynthesis and other related metabolic processes that hamper plant growth and productivity. Identifying plants that can tolerate abiotic stress conditions is essential for sustainable agriculture. plants can tolerate adverse weather conditions, especially drought and heat, and their leaves and grain are highly nutritious.

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Article Synopsis
  • Mitochondrial 10-formyltetrahydrofolate (10-formyl-THF) is broken down by the enzyme ALDH1L2 in mitochondria to produce NADPH, which helps combat oxidative stress, and contributes to nucleotide synthesis and mitochondrial protein production.
  • Reducing expression of ALDH1L2 in breast cancer cells leads to increased reactive oxygen species (ROS), along with higher levels of formate and fMet—both of which are linked to enhanced cancer cell mobility through formyl-peptide receptor (FPR) signaling.
  • In different tumor models, higher levels of ALDH1L2 help limit the accumulation of formate and fMet, thereby reducing the cancer's metastatic potential
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Introduction: A ketogenic diet (KD), which is a high fat, low carbohydrate diet has been shown to inhibit the mammalian target of rapamycin (mTOR) pathway and alter the redox state. Inhibition of the mTOR complex has been associated with the attenuation and alleviation of various metabolic and- inflammatory diseases such as neurodegeneration, diabetes, and metabolic syndrome. Various metabolic pathways and signalling mechanisms have been explored to assess the therapeutic potential of mTOR inhibition.

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Bioaugmentation potential of inoculum derived from anaerobic digestion feedstock for enhanced methane production using water hyacinth.

World J Microbiol Biotechnol

April 2023

Microbiology and Environmental Biotechnology Research Group, Institute for Soil, Climate and Water, Agricultural Research Council, Arcadia, Pretoria, 0083, South Africa.

The utilisation of water hyacinth for production of biogas is considered to be a solution to both its control and the global renewable energy challenge. In this instance, an investigation was conducted to evaluate the potential of water hyacinth inoculum to enhance methane production during anaerobic digestion (AD). Chopped whole water hyacinth (10% (w/v)) was digested to prepare an inoculum consisting mainly of water hyacinth indigenous microbes.

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A comprehensive study of bacterial and biotoxin contaminants of ready-to-eat (RTE) foods in Nigeria is yet to be reported. Hence, this study applied 16S rRNA gene sequencing and a dilute-and-shoot LC-MS/MS method to profile bacteria and biotoxins, respectively, in 199 RTE food samples comprising (n = 30) bread (n = 30), shawarma (n = 35), (n = 35), biscuits (n = 34), and (n = 35). A total of 631 bacterial isolates, clustered into seven operational taxonomic units, namely , , , and , , and , that are reported for the first time were recovered from the foods.

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Hypertension is one of the most important and complex risk factors for cardiovascular diseases (CVDs). By using urinary peptidomics analyses, we aimed to identify peptides associated with hypertension, building a framework for future research towards improved prediction and prevention of premature development of CVD. We included 78 hypertensive and 79 normotensive participants from the African-PREDICT study (aged 20-30 years), matched for sex (51% male) and ethnicity (49% black and 51% white).

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Drought and heat stress is known to influence the accumulation of mineral content, antioxidant activity, phenolics, flavonoids and other bioactive compounds in many tolerant leafy vegetables. plants can tolerate adverse weather conditions, especially drought and heat. Therefore, evaluating the influence of drought and heat stress on commercially and medically important crop species like is important to grow the crop for optimal nutritional and medicinal properties.

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FACTORS CONTRIBUTING TO PULMONARY TB TREATMENT LOST TO FOLLOW-UP IN DEVELOPING COUNTRIES: AN OVERVIEW.

Afr J Infect Dis

December 2022

Human Metabolomics, North-West University (Potchefstroom Campus), Private Bag x6001, Box 269, Potchefstroom, South Africa, 2531.

Background: Despite the available treatment options, pulmonary tuberculosis (TB) remains a leading cause of disease-related deaths worldwide. Treatment non-adherence/lost to follow-up (LTFU), particularly in developing countries, is a continuous concern. LTFU prolongs TB infectiousness and contributes to TB treatment failure, relapse, and death.

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Analysis of genome-wide knockout mouse database identifies candidate ciliopathy genes.

Sci Rep

December 2022

Department of Ophthalmology and Vision Science, School of Medicine, U.C. Davis Eye Center, 4860 Y. Street, Suite 2400, Sacramento, CA, 95817, USA.

We searched a database of single-gene knockout (KO) mice produced by the International Mouse Phenotyping Consortium (IMPC) to identify candidate ciliopathy genes. We first screened for phenotypes in mouse lines with both ocular and renal or reproductive trait abnormalities. The STRING protein interaction tool was used to identify interactions between known cilia gene products and those encoded by the genes in individual knockout mouse strains in order to generate a list of "candidate ciliopathy genes.

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