Publications by authors named "Orish E Orisakwe"

Breast milk, a fundamental component of infant nutrition, may serve as a reservoir for various metal(loid)s, which could pose significant health risks to infants of mothers exposed to toxic metals. Human exposure levels to metal(loid)s vary across regions, influenced by differences in diet, lifestyle, and environmental factors. This systematic review compares metal(loid) concentrations in breast milk from Sub-Saharan Africa (SSA) and Mediterranean Europe (Med.

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Monosodium glutamate (MSG) is a food additive that enhances the palatability of foods, thus its frequent use both domestically and industrially. Based on the dose-factor, frequency, and duration of exposure, MSG may provoke adverse health outcomes both in animals and humans. The present report aims at providing a comprehensive analysis of the scientifically proven untoward health effects of MSG.

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  • The exact mechanisms behind liver cell destruction in chronic hepatitis are still unclear, but issues like renal failure in advanced cirrhosis are serious problems.
  • Smokers infected with hepatitis B and C generally have a worse outlook for their health.
  • The review suggests that cadmium, a harmful environmental metal, can damage liver cells if it's not bound to the protective protein metallothionein, especially when oxidative stress is high and levels of zinc are low, ultimately leading to increased kidney damage in advanced cirrhosis.
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Male fertility is strongly affected by the overexpression of free radicals induced by heavy metals. The aim of this study was to evaluate the potential antioxidant, anti-inflammatory, and gonado-protective effects of natural compounds. Biochemical and morphological assays were performed on male albino rats divided into five groups: a control group (water only), a group orally exposed to a metal mixture of Pb-Cd-Hg-As alone and three groups co-administered the metal mixture and an aqueous extract of the Nigerian medicinal plant, (, ), at three different concentrations (500, 1000, and 1500 mg/kg) for 60 days.

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  • * The study involved 91 male Sprague rats divided into various groups, assessing the impacts of nickel (Ni) and aluminum (Al) alone and in combination, with or without SiNP treatment over 90 days.
  • * Results indicated that SiNPs significantly reduced harmful markers like amyloid beta (Aβ-42) and cyclooxygenase-2 (COX-2), while increasing beneficial neurotrophic factors like brain-derived neurotrophic factor (BDNF) and nerve growth factor (NGF), suggesting
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Despite steady progress in the development and promotion of the circular economy as a model, an overwhelming proportion of technological devices discarded by the Global North still finds its way to the Global South, where technology-related environmental health problems start from the predation of resources and continue all the way to recycling and disposal. We reviewed literature on TCEs in sub-Saharan Africa (SSA), focussing on: the sources and levels of environmental pollution; the extent of human exposure to these substances; their role in the aetiology of human diseases; their effects on the environment. Our review shows that even minor and often neglected technology-critical elements (TCEs), like rare earth elements (REEs) and platinum group elements (PGEs), reveal the environmental damage and detrimental health effects caused by the massive mining of raw materials, exacerbated by improper disposal of e-waste (from dumping to improper recycling and open burning).

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African mesquite AM is widely used as an anti-inflammatory agent in sub-Sahara Africa especially Nigeria. Given its strong anti-inflammatory potency, this study has evaluated the neuroprotective properties of AM in the hippocampus HIP and olfactory bulb OB of rats exposed to Cd, As, Hg, and Pb. Twenty-five albino Sprague Dawley rats were randomly divided into five groups in this experiment.

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The beneficial effects of (PA) on human health have been demonstrated; however, its protective effects against heavy metals (HM) are not yet understood. This study evaluated the potential neuroprotective effects of PA in the cerebral cortex and cerebellum. To accomplish this, we divided 35 albino Sprague Dawley rats into five groups.

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  • * A systematic evaluation of literature identified significant risks from these contaminants, often related to unregulated electronic waste dumping, posing threats to public health and food systems.
  • * The study suggests an integrated approach for environmental management, emphasizing the need for short- to mid-term priorities like collaboration and monitoring systems, alongside long-term strategies for sustainable practices and improved food safety in Ghana, potentially serving as a model for similar regions.
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Rivers State, Niger Delta, Nigeria often referred to as the 'treasure bed of the nation' is the seat of crude oil production activities with the accompanying environmental degradation. The severity of the environmental pollution and contaminated air quality took a new turn for the worse in November 2016, when the residents of Port Harcourt city, Rivers State, a major oil producing State experienced for the first time, aerosol deposition of plumes of black soot. This systematic review paper is aimed at quantifying the severity of this public health challenge.

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Purpose/aim Of The Study: Heavy metals and metalloids have been implicated in neurodenerative diseases. Present study has evaluated the potential protective effects of Se and Zn on heavy metals and metalloids mixture-induced (Cd, Pb, Hg and As) toxicity in the hippocampus and olfactory bulb in male rats.

Materials And Methods: Five groups of Wistar rats were randomly divided in to: controls, toxic metals mixture (TMM) exposed rats (PbCl, 20 mg·kg; CdCl, 1.

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There is increasing evidence that the imbalance of metals as cobalt (Co) and chromium (Cr) may increase the risk of development and progression of neurodegenerative diseases (NDDs). The human exposure to Co and Cr is derived mostly from industry, orthopedic implants, and polluted environments. Neurological effects of Co and Cr include memory deficit, olfactory dysfunction, spatial disorientation, motor neuron disease, and brain cancer.

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  • Aluminum and nickel are neurotoxic metals that can harm the cerebellum, which is vital for motor control, but their effects had not been well-studied until this research.
  • In the study, male rats were exposed to controlled doses of aluminum, nickel, and a combination of both to analyze their impact on cerebellar function and neurochemical changes.
  • Results showed that exposed rats accumulated higher levels of these metals, experienced oxidative stress, decreased nerve growth factors, and demonstrated impaired motor performance, indicating significant damage to cerebellar function.
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  • This study examined the neurotoxicity effects of a mixture of nickel and aluminum in male rats, comparing it to individual exposure to each metal.
  • Twenty-eight Sprague Dawley rats were divided into four groups for a 90-day oral administration of deionized water (control), aluminum, nickel, and a nickel-aluminum mixture, followed by cognitive testing and biochemical analyses.
  • Results indicated that the nickel-aluminum mixture led to altered levels of brain-derived neurotrophic factors and other neurotoxic markers, with significant differences in metal accumulation and enzymatic activity compared to the individual metal exposures.
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  • * In a study of 52 post-mortem left ventricle samples, individuals with CMP exhibited significantly higher levels of heavy metals like lead, nickel, manganese, and copper compared to those without heart disease.
  • * Conversely, zinc levels were found to be lower in CMP patients, suggesting a potential link between metal accumulation and the development of cardiomyopathies.
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  • Heavy metals (HM) are harmful to humans and people are often exposed to them unknowingly, with no effective management strategies in place.
  • This study aimed to assess how essential metals like Zinc and Selenium can counteract the toxicity effects of mixed heavy metals (lead, cadmium, mercury, and arsenic) administered to rats.
  • Results showed that heavy metal exposure led to negative health impacts like reduced food and water intake, altered liver function, and increased toxicity, but the presence of Zinc and Selenium effectively reversed these detrimental changes.
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The extent of heavy-metal-induced cardiotoxicity is proportional to the levels of metal bioaccumulation, and it was previously assumed that heavy metals accumulate uniformly in the myocardium. Therefore, the aim of this study was to investigate concentrations of metals and metalloids in two distant regions of the left ventricle (LV), the base of the LV, and apex of the LV using inductively coupled plasma mass spectrometry (ICP-MS). We also examined the potential correlation between metal levels and the thickness of the interventricular septum in twenty LV specimens (ten from the base of LV and ten from the apex of LV) from 10 individuals (mean age 75 ± 6 years).

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The Niger Delta, Nigeria, is noted for crude oil exploration. Whereas there seems to be a handful of data on soil polycyclic aromatic hydrocarbon (PAH) levels in this area, there is a paucity of studies that have evaluated soil and vegetation PAHs simultaneously. The present study has addressed this information gap.

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The Niger Delta environment is under serious threat due to heavy metal pollution. Many studies have been conducted on the heavy metal contamination in soils, water, seafood and plants in the Niger Delta ecosystem. However, there is a lack of clear understanding of the health consequences for people and strategies for attaining One Health, and a dispersion of information that is accessible.

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In Nigeria, environmental pollution linked with PAHs has been increasing, and PAHs in fish pose a threat to all, especially those that rely upon fish. This systematic review aimed at evaluating human health effect of PAHs concentration in dried and fresh fish in Nigeria. A systematic literature search was carried out on PubMed, MedLine, Web of Science and Science Direct, etc.

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Background: This study evaluated the potential protective effects of Zn and Se in the cerebellum and cerebral cortex, two fundamentally important brain regions, in albino rats that were exposed to heavy metals mixture (Al, Pb, Hg and Mn).

Methods: Animals were divided into five groups of seven animals per group with following patterns of exposure, controls group 1 were orally treated with deionized water for 60 days; group 2 was exposed to heavy metal mixture (HMM) with following concentrations (20 mg·kg of Pb body weight; 0.40 mg·kg of Hg; 0.

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