359 results on '"COBALT TOXICITY"'
Search Results
2. Cobalt toxicity: a preventable and treatable cause for possibly life threatening cardiomyopathy.
- Author
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Giacon G and Boon K
- Subjects
- Arthroplasty, Replacement, Hip instrumentation, Cardiomyopathies diagnosis, Cobalt blood, Echocardiography, Fatal Outcome, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Prosthesis Failure adverse effects, Radiography, Thoracic, Arthroplasty, Replacement, Hip adverse effects, Cardiomyopathies chemically induced, Cobalt toxicity, Hip Prosthesis adverse effects
- Abstract
Mr BH was a 53-year-old gentleman who presented to hospital in November 2019 with decompensated heart failure, new-onset paroxysmal atrial tachycardia and increasing left hip pain. Imaging of his hip demonstrated radiographic evidence of bony changes, suggestive of an adverse reaction to metal debris (ARMD), along with a non-traumatic left peri-prosthetic neck-of-femur fracture. Clinically, he had concurrent decompensated cardiomyopathy requiring dopamine and furosemide infusions. His serum cobalt (sCo) levels were 5244nmol/L (normal<12nmol/L). He had previous bilateral total hip arthroplasties using the Birmingham Hip Resurfacing (right side 2006, left side 2012). As part of routine metal-on-metal arthroplasty follow-up, Mr BH had sCo level checks. In 2013, these levels rose to 1981nmol/L. Although there has been no direct correlation between sCo levels and toxicity, levels above 119nmol/L are concerning. Unfortunately, Mr BH moved to a different health district and was subsequently lost to follow-up. In 2015, Mr BH was diagnosed with dilated cardiomyopathy, presumed secondary to viral myocarditis. Despite successful chelating therapy and heart failure treatment, he passed away secondary to cobalt-toxicity induced cardiomyopathy (CTCM)., Competing Interests: Nil.
- Published
- 2021
3. Exploiting Unique Alignment of Cobalt Ferrite Nanoparticles, Mild Hyperthermia, and Controlled Intrinsic Cobalt Toxicity for Cancer Therapy.
- Author
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Balakrishnan PB, Silvestri N, Fernandez-Cabada T, Marinaro F, Fernandes S, Fiorito S, Miscuglio M, Serantes D, Ruta S, Livesey K, Hovorka O, Chantrell R, and Pellegrino T
- Subjects
- Animals, Cell Line, Tumor, Cobalt adverse effects, Ferric Compounds adverse effects, Humans, Hyperthermia, Induced, Magnetic Fields, Mice, Survival Analysis, Xenograft Model Antitumor Assays, Cobalt chemistry, Cobalt therapeutic use, Ferric Compounds chemistry, Ferric Compounds therapeutic use, Nanoparticles chemistry
- Abstract
Nanoparticle-based magnetic hyperthermia is a well-known thermal therapy platform studied to treat solid tumors, but its use for monotherapy is limited due to incomplete tumor eradication at hyperthermia temperature (45 °C). It is often combined with chemotherapy for obtaining a more effective therapeutic outcome. Cubic-shaped cobalt ferrite nanoparticles (Co-Fe NCs) serve as magnetic hyperthermia agents and as a cytotoxic agent due to the known cobalt ion toxicity, allowing the achievement of both heat and cytotoxic effects from a single platform. In addition to this advantage, Co-Fe NCs have the unique ability to form growing chains under an alternating magnetic field (AMF). This unique chain formation, along with the mild hyperthermia and intrinsic cobalt toxicity, leads to complete tumor regression and improved overall survival in an in vivo murine xenograft model, all under clinically approved AMF conditions. Numerical calculations identify magnetic anisotropy as the main Co-Fe NCs' feature to generate such chain formations. This novel combination therapy can improve the effects of magnetic hyperthermia, inaugurating investigation of mechanical behaviors of nanoparticles under AMF, as a new avenue for cancer therapy., (© 2020 The Authors. Published by Wiley-VCH GmbH.)
- Published
- 2020
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4. Transcriptomic Analysis of Streptococcus suis in Response to Ferrous Iron and Cobalt Toxicity.
- Author
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Jia M, Wei M, Zhang Y, and Zheng C
- Subjects
- ATP-Binding Cassette Transporters genetics, Animals, Bacterial Proteins genetics, Down-Regulation genetics, Gene Expression Profiling methods, Gene Expression Regulation, Bacterial genetics, Hydrolases genetics, Operon genetics, Oxidative Stress genetics, Swine, Cobalt toxicity, Iron toxicity, Streptococcus suis genetics, Transcriptome genetics
- Abstract
Streptococcus suis is a zoonotic pathogen causing serious infections in swine and humans. Although metals are essential for life, excess amounts of metals are toxic to bacteria. Transcriptome-level data of the mechanisms for resistance to metal toxicity in S. suis are available for no metals other than zinc. Herein, we explored the transcriptome-level changes in S. suis in response to ferrous iron and cobalt toxicity by RNA sequencing. Many genes were differentially expressed in the presence of excess ferrous iron and cobalt. Most genes in response to cobalt toxicity showed the same expression trends as those in response to ferrous iron toxicity. qRT-PCR analysis of the selected genes confirmed the accuracy of RNA sequencing results. Bioinformatic analysis of the differentially expressed genes indicated that ferrous iron and cobalt have similar effects on the cellular processes of S. suis . Ferrous iron treatment resulted in down-regulation of several oxidative stress tolerance-related genes and up-regulation of the genes in an amino acid ABC transporter operon. Expression of several genes in the arginine deiminase system was down-regulated after ferrous iron and cobalt treatment. Collectively, our results suggested that S. suis alters the expression of multiple genes to respond to ferrous iron and cobalt toxicity.
- Published
- 2020
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5. Hydrogen sulfide (H 2 S) and nitric oxide (NO) alleviate cobalt toxicity in wheat (Triticum aestivum L.) by modulating photosynthesis, chloroplastic redox and antioxidant capacity.
- Author
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Ozfidan-Konakci C, Yildiztugay E, Elbasan F, Kucukoduk M, and Turkan I
- Subjects
- Chloroplasts drug effects, Chloroplasts metabolism, Gene Expression Regulation, Plant drug effects, Nitroprusside pharmacology, Oxidation-Reduction, Oxidative Stress drug effects, Photosynthesis drug effects, Plant Leaves drug effects, Plant Leaves growth & development, Plant Leaves metabolism, Sulfides pharmacology, Triticum growth & development, Triticum metabolism, Cobalt toxicity, Hydrogen Sulfide metabolism, Nitric Oxide metabolism, Triticum drug effects
- Abstract
The role of hydrogen sulfide (H
2 S)/nitric oxide (NO) in mitigating stress-induced damages has gained interest in the past few years. However, the protective mechanism H2 S and/or NO has towards the chloroplast system through the regulation of redox status and activation of antioxidant capacity in cobalt-treated wheat remain largely unanswered. Triticum aestivum L. cv. Ekiz was treated with alone/in combination of a H2 S donor (sodium hydrosulfide (NaHS,600μM)), a NO donor (sodium nitroprusside (SNP,100μM)) and a NO scavenger (rutin hydrate (RTN,50μM)) to assess how the donors affect growth, water relations, redox and antioxidant capacity in chloroplasts, under cobalt (Co) concentrations of 150-300 μM. Stress decreased a number of parameters (growth, water content (RWC), osmotic potential (ΨΠ ), carbon assimilation rate, stomatal conductance, intercellular CO2 concentrations, transpiration rate and the transcript levels of rubisco, which subsequently disrupt the photosynthetic capacity). However, SNP/NaHS counteracted the negative effects of stress on these aforementioned parameters and RTN application with stress/non-stress was reversed these effects. Hydrogen peroxide (H2 O2 ) and TBARS were induced under stress in spite of activated ascorbate peroxidase (APX). SNP/NaHS under stress increased activation of superoxide dismutase (SOD), peroxidase (POX), APX, glutathione reductase (GR), monodehydroascorbate reductase (MDHAR), dehydroascorbate reductase (DHAR), ascorbate (tAsA) and glutathione (GSH). In conclusion, NaHS/SNP are involved in the regulation and modification of growth, water content, rubisco activity and up-regulation of ascorbate-glutathione cycle (AsA-GSH) in chloroplast under stress., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2020 Elsevier B.V. All rights reserved.)- Published
- 2020
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6. Genetic analysis of oxidative and endoplasmic reticulum stress responses induced by cobalt toxicity in budding yeast.
- Author
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Zhao YY, Cao CL, Liu YL, Wang J, Li SY, Li J, and Deng Y
- Subjects
- Endoplasmic Reticulum metabolism, Endoplasmic Reticulum Stress physiology, Gene Expression Profiling methods, Homeostasis physiology, Oxidative Stress genetics, Protein Serine-Threonine Kinases genetics, Reactive Oxygen Species metabolism, Saccharomyces cerevisiae genetics, Saccharomyces cerevisiae metabolism, Saccharomyces cerevisiae Proteins genetics, Saccharomyces cerevisiae Proteins metabolism, Signal Transduction physiology, Spectrophotometry, Atomic methods, Unfolded Protein Response, Cobalt metabolism, Cobalt toxicity, Oxidative Stress physiology
- Abstract
Background: Cobalt is an important metal cofactor of many living cells. However, excessive cobalt is toxic and can cause cell death and even several diseases in humans. Saccharomyces cerevisiae is a useful tool for studying metal homeostasis and many of the genes and pathways are highly conserved in higher eukaryotes including humans., Methods: The intracellular cobalt and reactive oxygen species (ROS) levels were measured by an atomic absorption spectrometer and DHE staining method, respectively. The expression of genes involved in scavenging oxidative stress was tested by qPCR method, while the expression of UPRE-lacZ report gene was analyzed via β-galactosidase activity assay., Results: Using a genome-scale genetic screen, 153 cobalt-sensitive and 37 cobalt-tolerant gene deletion mutants were identified from Saccharomyces cerevisiae. We showed that 101 of the cobalt-sensitive mutants accumulated higher intracellular cobalt compared to wild-type. The intracellular ROS levels in 112 of the mutants were induced by cobalt, which might be caused by the decreased expression of genes involved in scavenging oxidative stress in response to cobalt. Moreover, more than one-third of the cobalt-sensitive mutants were also sensitive to tunicamycin, and cobalt stress might induce the unfolded protein response (UPR) through serine/threonine kinase and endoribonuclease Ire1., Conclusions: This study reinforced the fact that cobalt toxicity might be due to the high intracellular cobalt and ROS levels, and the endoplasmic reticulum stress responses induced by cobalt., General Significance: Elucidating the toxicity mechanisms of cobalt stress response will help reveal new routes for the treatment of the diseases induced by cobalt., (Copyright © 2020. Published by Elsevier B.V.)
- Published
- 2020
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7. Heart transplant secondary to cobalt toxicity after hip arthroplasty revision.
- Author
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Sanz Pérez MI, Rico Villoras AM, Moreno Velasco A, Bartolomé García S, and Campo Loarte J
- Subjects
- Artificial Limbs, Ceramics, Chromium blood, Chromium Alloys, Female, Heavy Metal Poisoning, Hip Prosthesis adverse effects, Humans, Male, Middle Aged, Polyethylene, Prosthesis Failure, Reoperation, Arthroplasty, Replacement, Hip adverse effects, Cobalt adverse effects, Cobalt blood, Heart Transplantation
- Abstract
Introduction: Cobalt toxicity in patients with hip arthroplasty is a rare complication, but it should be considered in those patients who, after a ceramic fracture, were implanted with a metal-on-polyethylene prosthesis. The complete removal of ceramic particles during revision surgery can be complicated. If the bearing surface is replaced with a metal-on-polyethylene prosthesis, these residual ceramic particles may wear down the chrome-cobalt head, producing localised metallosis. This can trigger blood metal ion levels to rise, causing systemic toxicity. Visual and auditory alterations, cognitive deterioration, hypothyroidism, neuropathy, cardiomyopathy, anorexia, fatigue, diabetes, polycythemia, and respiratory and cutaneous symptoms are some of the clinical manifestations of prosthetic cobaltism., Case Description: A young patient presented with multiorgan failure secondary to cobalt toxicity after a ceramic fracture and revision with a metal-on-polyethylene prosthesis; his serum cobalt and chromium levels were 652 μg/L and 270 μg/L, respectively. The patient needed a heart transplant after presenting with cobalt-induced cardiogenic shock., Conclusions: In a patient with a ceramic fracture who is subjected to revision surgery with a metal-on-polyethylene bearing, it is necessary to rule out the possibility of cobalt intoxication. Serum cobalt levels > 20 μg/L are inadmissible; in these cases, surgical treatment should be considered in the short term. A wide synovectomy and replacement of components should be performed with hard friction options, preferably with a ceramic-on-ceramic prosthesis.
- Published
- 2019
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8. Copper alleviates cobalt toxicity in barley by antagonistic interaction of the two metals.
- Author
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Lwalaba JLW, Louis LT, Zvobgo G, Fu L, Mwamba TM, Mukobo Mundende RP, and Zhang G
- Subjects
- Antioxidants metabolism, Drug Interactions, Glutathione metabolism, Hordeum enzymology, Hordeum metabolism, Lipid Peroxidation, Oxidative Stress drug effects, Photosynthesis drug effects, Cobalt toxicity, Copper toxicity, Hordeum drug effects, Soil Pollutants toxicity
- Abstract
Cobalt (Co) commonly co-exists with copper (Cu) in natural soils, but the information about their combined effects on plants is poorly available. In this study, we hydroponically investigated the combined effects of Co and Cu on two barley genotypes differing in Co toxicity tolerance to reveal the interaction pattern of these two metals. The results showed that single treatment of Co or Cu at the dose of 100 μM led to a significant decrease of growth and photosynthetic rate, and a significant increase of lipid peroxidation, ROS radicals as well as anti-oxidative enzyme (SOD, CAT and GR) activities and glutathione content, with the extent of effect being less in Yan66 than Ea52. The combined treatment of Co and Cu alleviated the toxicity of both metals in comparison with each metal treatment alone, as reflected by improved growth and photosynthesis, and much slight oxidative stress. The alleviation of metal toxicity upon combined treatment is mainly attributed to a drastic reduction of Co uptake and its translocation from roots to shoots. It may be suggested that interaction of Co and Cu on their uptake and movement in plants is antagonistic., (Copyright © 2019 Elsevier Inc. All rights reserved.)
- Published
- 2019
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9. An Analysis of the FDA MAUDE Database and the Search for Cobalt Toxicity in Class 3 Johnson & Johnson/DePuy Metal-on-Metal Hip Implants.
- Author
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Kavanagh KT, Kraman SS, and Kavanagh SP
- Subjects
- Aged, Arthroplasty, Replacement, Hip methods, Databases, Factual, Female, Humans, Male, Middle Aged, United States, United States Food and Drug Administration, Arthroplasty, Replacement, Hip adverse effects, Cobalt toxicity, Hip Prosthesis adverse effects, Metal-on-Metal Joint Prostheses adverse effects
- Abstract
Introduction: This study was designed to determine whether systemic cobalt toxicity as an adverse event could be documented using the Food and Drug Administration's (FDA) Manufacturer and User Facility Device Experience (MAUDE) database for cobalt-chromium containing hip implant recipients. Class 3 Johnson & Johnson (J&J)/DePuy devices were chosen for analysis because of the large number of adverse event reports related to their Pinnacle and ASR XL Acetabular hip replacement systems. A secondary goal was to characterize the reporters who are populating the information in the MAUDE database and to evaluate the quality of the data and information submitted., Methods: Using FDA MAUDE downloadable data files, 83,528 adverse event medical device narrative reports were identified with the product code of KWA (Prosthesis, Hip, Semiconstrained [Metal Uncemented Acetabular Component]) for J&J/DePuy (KWA Text File). These are class 3 devices and devices with known high failure rates. The ASR XL Acetabular hip replacement Systems and Pinnacle fall into this category. This group of implants was chosen because implant failure is associated with elevated cobalt levels. Two additional subfiles were created from Free Text records in the narrative reports containing key words that indicated a chromium or cobalt (CrCo) device and another for key words indicating elevated levels of cobalt or toxicity. These files were then searched for symptoms of systemic cobalt toxicity with Microsoft Excel using key words pertaining to symptom categories of: cognitive/memory loss, tremor, neuropathy, depression, auditory symptoms, visual symptoms, cardiac, and thyroid disease. Reports are submitted to the FDA at the device component level. It was common for multiple reports to be submitted for a single device., Results: It was not possible to differentiate systemic versus local symptoms for adverse event reports in the neuropathy category. This category was not analyzed. The number of adverse event reports in the other categories ranged from 119 to 16 for the J&J/DePuy KWA Text File and 59 to 4 in the file of records having key words indicating potential elevation of CrCo or toxicity. Cardiac, visual, and auditory conditions were most frequently reported. With the possible exception of cardiomyopathy, the numbers of these reports are far below the prevalence expected in the general population of comparable age. The content of the MAUDE database records often contained little objective data. We found less than 4% of 14,714 records, which indicated cobalt elevation or toxicity contained units for quantitative measurement. There was also frequent use of nondescript, all-encompassing words and phrases such as "mental anguish," found in 321 KWA Text File records. Manufacturers submitted more than 99% of the reports and the most common reporter occupation was attorney, found in 42.24% of the 83,550 J&J/DePuy KWA Reporter File records. Physician was the reporter's occupation in 20.48% of reports but seldom reported directly to the FDA., Conclusions: We were not able find in the FDA MAUDE database meaningful warning signs to support the contention that chromium-cobalt-containing Class 3 J&J and DePuy hip implants caused systemic neurological or thyroid symptoms in patients. The incidence of reported cardiomyopathy was rare but frequent enough to be cause of concern. The redaction of most patient data along with the nonstructured nature of data entry would be expected to hinder the identification of warning signs. Even identification of the type of device could not be consistently carried out. In addition, the FDA needs to implement a methodology to identify and group all reports from a single device implanted into a patient, so duplication of event counting would not occur. Of 83,550 J&J/DePuy KWA Reporter File records, we found only two physician reports sent directly to the FDA. Almost all reports are submitted by manufacturers and are most commonly authored by attorneys. A standard of care needs to be set for physicians to report medical device adverse events to the FDA.
- Published
- 2018
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10. Cobalt toxicity in humans-A review of the potential sources and systemic health effects.
- Author
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Leyssens L, Vinck B, Van Der Straeten C, Wuyts F, and Maes L
- Subjects
- Cobalt blood, Dose-Response Relationship, Drug, Environmental Monitoring, Environmental Pollutants blood, Humans, Prosthesis Design, Risk Assessment, Toxicity Tests, Cobalt adverse effects, Diet adverse effects, Dietary Supplements adverse effects, Environmental Exposure adverse effects, Environmental Pollutants adverse effects, Hip Prosthesis adverse effects, Metal-on-Metal Joint Prostheses adverse effects, Occupational Exposure adverse effects
- Abstract
Cobalt (Co) and its compounds are widely distributed in nature and are part of numerous anthropogenic activities. Although cobalt has a biologically necessary role as metal constituent of vitamin B
12 , excessive exposure has been shown to induce various adverse health effects. This review provides an extended overview of the possible Co sources and related intake routes, the detection and quantification methods for Co intake and the interpretation thereof, and the reported health effects. The Co sources were allocated to four exposure settings: occupational, environmental, dietary and medical exposure. Oral intake of Co supplements and internal exposure through metal-on-metal (MoM) hip implants deliver the highest systemic Co concentrations. The systemic health effects are characterized by a complex clinical syndrome, mainly including neurological (e.g. hearing and visual impairment), cardiovascular and endocrine deficits. Recently, a biokinetic model has been proposed to characterize the dose-response relationship and effects of chronic exposure. According to the model, health effects are unlikely to occur at blood Co concentrations under 300μg/l (100μg/l respecting a safety factor of 3) in healthy individuals, hematological and endocrine dysfunctions are the primary health endpoints, and chronic exposure to acceptable doses is not expected to pose considerable health hazards. However, toxic reactions at lower doses have been described in several cases of malfunctioning MoM hip implants, which may be explained by certain underlying pathologies that increase the individual susceptibility for Co-induced systemic toxicity. This may be associated with a decrease in Co bound to serum proteins and an increase in free ionic Co2+ . As the latter is believed to be the primary toxic form, monitoring of the free fraction of Co2+ might be advisable for future risk assessment. Furthermore, future research should focus on longitudinal studies in the clinical setting of MoM hip implant patients to further elucidate the dose-response discrepancies., (Copyright © 2017 Elsevier B.V. All rights reserved.)- Published
- 2017
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11. Alleviating effects of calcium on cobalt toxicity in two barley genotypes differing in cobalt tolerance.
- Author
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Lwalaba JL, Zvobgo G, Fu L, Zhang X, Mwamba TM, Muhammad N, Mundende RP, and Zhang G
- Subjects
- Antioxidants metabolism, Drug Interactions, Genotype, Glutathione metabolism, Hordeum genetics, Hordeum metabolism, Malondialdehyde metabolism, Oxidative Stress drug effects, Photosynthesis drug effects, Reactive Oxygen Species metabolism, Calcium pharmacology, Cobalt toxicity, Hordeum drug effects, Soil Pollutants toxicity
- Abstract
Cobalt (Co) contamination in soils is becoming a severe issue in environment safety and crop production. Calcium (Ca)
, as a macro-nutrient element, shows the antagonism with many divalent heavy metals and the capacity of alleviating oxidative stress in plants. In this study, the protective role of Ca in alleviating Co stress was hydroponically investigated using two barley genotypes differing in Co toxicity tolerance. Barley seedlings exposed to 100µM Co showed the significant reduction in growth and photosynthetic rate, and the dramatic increase in the contents of reactive oxygen species (ROS), malondialdehyde (MDA), reduced glutathione (GSH) and oxidized glutathione (GSSG), and the activities of anti-oxidative enzymes, with Ea52 (Co-sensitive) being much more affected than Yan66 (Co-tolerant). Addition of Ca in growth medium alleviated Co toxicity by reducing Co uptake and enhancing the antioxidant capacity. The effect of Ca in alleviating Co toxicity was much greater in Yan66 than in Ea52. The results indicate that the alleviation of Co toxicity in barley plants by Ca is attributed to the reduced Co uptake and enhanced antioxidant capacity., (Copyright © 2017 Elsevier Inc. All rights reserved.)- Published
- 2017
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12. Cobalt toxicity after revision total hip replacement due to fracture of a ceramic head.
- Author
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Pelayo-de Tomás JM, Novoa-Parra C, and Gómez-Barbero P
- Subjects
- Aged, Ceramics, Heavy Metal Poisoning diagnosis, Humans, Male, Arthroplasty, Replacement, Hip instrumentation, Cobalt poisoning, Heavy Metal Poisoning etiology, Hip Prosthesis adverse effects, Prosthesis Failure adverse effects
- Abstract
Symptomatic cobalt toxicity from a failed total hip replacement is a rare, but devastating complication. Potential clinical findings include cardiomyopathy, hypothyroidism, skin rash, visual and hearing impairment, polycythaemia, weakness, fatigue, cognitive impairment, and neuropathy. The case is presented of a 74year-old man in whom, after a ceramic-ceramic replacement and two episodes of prosthetic dislocation, it was decided to replace it with a polyethylene-metal total hip arthroplasty (THA). At 6months after the revision he developed symptoms of cobalt toxicity, confirmed by analytical determination (serum cobalt level=651.2μg/L). After removal of the prosthesis, the levels of chromium and cobalt in blood and urine returned to normal, with the patient currently being asymptomatic. It is recommended to use a new ceramic on ceramic bearing at revision, in order to minimise the risk of wear-related cobalt toxicity following breakage of ceramic components., (Copyright © 2016 SECOT. Publicado por Elsevier España, S.L.U. All rights reserved.)
- Published
- 2017
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13. Cobalt Uptake by Food Plants and Accumulation in Municipal Solid Waste Materials Compost-amended Soil: Public Health Implications.
- Author
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Khan ZI, Ashfaq A, Ahmad K, Batool AI, Aslam M, Ahmad T, Mehmood N, Noorka IR, Gaafar AZ, Elshikh MS, Habib SS, Khan R, and Ugulu I
- Subjects
- Humans, Composting, Public Health, Soil Pollutants analysis, Vegetables chemistry, Vegetables metabolism, Plants, Edible chemistry, Plants, Edible metabolism, Cobalt analysis, Soil chemistry, Solid Waste analysis
- Abstract
One of the most pressing environmental issues is how to properly dispose of municipal solid waste (MSW), which represents both a substantial source of concern and a challenge. The current study evaluated cobalt (Co) accumulation in MSW, their uptake by different vegetables grown for two years, and related human health risks. Vegetables were grown in four different groups, such as one control (ground soil), and the remaining treatment groups (T1, T2, and T3) received varying concentrations of MSW. The analysis of Co was done through an atomic absorption spectrophotometer (AAS). Results revealed that the concentration of Co was higher in all the vegetables (n = 15) grown in soil supplemented with 75% MSW during 2nd growing year. Among all vegetables, the highest concentration of Co was observed in Solanum tuberosum at T3 during 2nd growing year. The pollution load index (PLI) value for vegetables during both growing years was more than 1 except in control soil. The findings indicated that the highest enrichment factor (EF) and hazard resilience index (HRI) value of 0.09 was present in S. tuberosum. Health index values for cobalt in the study were below 1. The HRI < 1 indicated that consumers do not face any immediate health risks. The investigation of Co concentrations in blood samples obtained from individuals residing in different areas contributes a human health perspective to the research. The findings indicate that the concentration of Co rises with an increasing proportion of MSW. While the metal levels in MSW-treated soil were not high enough to classify the soil as polluted, the results recommend that recycling MSW can substitute mineral fertilizers. Nevertheless, the presence of cobalt in MSW may directly affect soil fertility and could impact crop production and human health., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2024
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14. An Update Overview on Mechanistic Data and Biomarker Levels in Cobalt and Chromium-Induced Neurodegenerative Diseases.
- Author
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Ajibo DN, Orish CN, Ruggieri F, Bocca B, Battistini B, Frazzoli C, Orish FC, and Orisakwe OE
- Subjects
- Humans, Animals, Oxidative Stress drug effects, Cobalt toxicity, Cobalt adverse effects, Chromium toxicity, Chromium adverse effects, Neurodegenerative Diseases chemically induced, Neurodegenerative Diseases metabolism, Biomarkers metabolism
- Abstract
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. Mechanisms of Co and Cr neurotoxicity included DNA damage and genomic instability, epigenetic changes, mitochondrial disturbance, lipid peroxidation, oxidative stress, inflammation, and apoptosis. This paper seeks to overview the Co and Cr sources, the mechanisms by which these metals induce NDDs, and their levels in fluids of the general population and patients affected by NDDs. To this end, evidence of Co and Cr unbalance in the human body, mechanistic data, and neurological symptoms were collected using in vivo mammalian studies and human samples., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
- Published
- 2024
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15. Fatal cobalt toxicity after total hip arthroplasty revision for fractured ceramic components.
- Author
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Fox KA, Phillips TM, Yanta JH, and Abesamis MG
- Subjects
- Arthroplasty, Replacement, Hip instrumentation, Ceramics chemistry, Chromium Alloys chemistry, Fatal Outcome, Female, Humans, Middle Aged, Prosthesis Failure adverse effects, Reoperation, Arthroplasty, Replacement, Hip adverse effects, Chromium Alloys toxicity, Cobalt toxicity, Hip Prosthesis adverse effects
- Abstract
Context: Post-arthroplasty metallosis, which refers to metallic corrosion and deposition of metallic debris in the periprosthetic soft tissues of the body, is an uncommon complication. Systemic cobalt toxicity post-arthroplasty is extremely rare. The few known fatal cases of cobalt toxicity appear to be a result of replacing shattered ceramic heads with metal-on-metal or metal-on-polyethylene implants. Friction between residual shards of ceramic and cobalt-chromium implants allows release of cobalt into the synovial fluid and bloodstream, resulting in elevated whole blood cobalt levels and potential toxicity., Case Details: This is a single patient chart review of a 60-year-old woman with prior ceramic-on-ceramic right total hip arthroplasty complicated by fractured ceramic components and metallosis of the joint. She underwent synovectomy and revision to a metal-on-polyethylene articulation. Ten months post-revision, she presented to the emergency department (ED) with right hip pain, dyspnea, worsening hearing loss, metallic dysgeusia, and weight loss. Chest CTA revealed bilateral pulmonary emboli (PE), and echocardiogram revealed new cardiomyopathy with global left ventricular hypokinesis with an ejection fraction (EF) of 35-40% inconsistent with heart strain from PE. Whole blood cobalt level obtained two days into her admission was 424.3 mcg/L and 24-h urine cobalt level was 4830.5 mcg/L. Although the patient initially clinically improved with regard to her PE and was discharged to home on hospital day 5, she returned 10 days later with a right hip dislocation and underwent closed reduction of the hip. The patient subsequently decompensated, developing cardiogenic shock, and respiratory failure. She went into pulseless electrical activity (PEA) and expired. Autopsy revealed an extensive metallic effusion surrounding the right hip prosthesis that tested positive for cobalt (41,000 mcg/L). There was also cobalt in the heart muscle tissue (2.5 mcg/g). A whole blood cobalt level obtained two days before she expired was 641.6 mcg/L., Discussion: This is a case of fatal cobalt-induced cardiomyopathy in a patient whose ceramic components of a total hip arthroplasty fractured causing metallosis with worsening cobalt toxicity. We recommend that when a fractured device is revised with a prosthesis with cobalt-chromium components, whole blood and urine cobalt measurements should be obtained and periodically monitored to evaluate for rising concentrations. Providers should be aware of clinical signs and symptoms of cobalt toxicity in patients who have prostheses with cobalt-chromium components. If suspected, toxicology and orthopedics should be involved for possible chelation and removal of the prosthesis.
- Published
- 2016
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16. Does therapeutic plasma exchange have a role in the treatment of prosthetic hip-associated cobalt toxicity? A case report and literature review.
- Author
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Grant ML, Karp JK, Palladino M, Le N, Hall N, and Herman JH
- Subjects
- Arthroplasty, Replacement, Hip adverse effects, Chelation Therapy, Female, Humans, Middle Aged, Cobalt toxicity, Hip Prosthesis adverse effects, Plasma Exchange methods
- Abstract
Background: Prosthetic hip-associated cobalt toxicity (PHACT) is an uncommon, but potentially devastating, complication for patients with metal-on-metal hip implants (MoMs). Clinical management of PHACT is poorly defined, with primary intervention being MoM explant followed by chelation therapy. Therapeutic plasma exchange (TPE) in cobalt toxicity has not been previously described. Given that cobalt is predominantly albumin bound, it should theoretically be removed by TPE. Here we report a case of PHACT and our experience using TPE to lower plasma cobalt levels., Case Report: A 61-year-old woman developed deafness, blindness, ambulatory dysfunction, and endocrinopathies after MoM implant. Cobalt levels on admission were greater than 1500 µg/L. In an attempt to rapidly lower cobalt levels before MoM explant, hemodialysis and TPE were performed. Hemodialysis removed negligible amounts of cobalt. One session of TPE temporarily removed approximately two-thirds of measurable cobalt, but levels rebounded to pre-TPE values after 8 hours. It was only after MoM removal that cobalt levels plateaued below 300 µg/L and clinical symptoms improved., Discussion: TPE removed cobalt from a PHACT patient, but a durable decrease in cobalt was only achieved after MoM explant. These findings are comparable to reports where chelation was employed in PHACT patients before MoM explant. The observed rebound phenomenon is likely from rapid equilibration between the immense extravascular tissue source (the MoM) and the intravascular compartment., Conclusion: TPE may serve as adjunctive therapy for PHACT patients whose cobalt levels remain high after explant, especially in patients with renal failure, in whom chelation is contraindicated., (© 2016 AABB.)
- Published
- 2016
- Full Text
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17. Systemic effects of cobalt toxicity after revision hip replacement can manifest in intermediate to long term follow-up.
- Author
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Vasukutty NL and Minhas TH
- Subjects
- Adult, Arthroplasty, Replacement, Hip adverse effects, Ceramics, Humans, Male, Osteonecrosis surgery, Prosthesis Design adverse effects, Reoperation, Time Factors, Arthroplasty, Replacement, Hip instrumentation, Cobalt poisoning, Hip Prosthesis adverse effects, Postoperative Complications etiology
- Abstract
Introduction: Metal toxicity from metal-on-metal hip replacements is now well documented and several large series have reported local reactions. Although less common, there are reports of similar reactions from failed ceramic liners. Systemic effects documented in literature have been grouped into cardiac, neuro-ocular and thyroid signs., Methods and Results: We report a case of a patient who had revision for fractured ceramic liner to metal on polyethylene. Third body effect of the ceramic particles led to wear through of the poly liner and the head directly articulating with metal shell. He developed cardiac and neurological features of cobalt toxicity in addition to extensive soft tissue destruction. Revision of the bearing surfaces and synovectomy led to clinical improvement and fall in metal ion levels., Conclusions: We recommend 2-stage revision in such situations and close monitoring of all these patients.
- Published
- 2016
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18. Systemic cobalt toxicity from total hip arthroplasties: review of a rare condition Part 2. measurement, risk factors, and step-wise approach to treatment.
- Author
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Zywiel MG, Cherian JJ, Banerjee S, Cheung AC, Wong F, Butany J, Gilbert C, Overgaard C, Syed K, Jacobs JJ, and Mont MA
- Subjects
- Aged, Animals, Chelating Agents therapeutic use, Cobalt analysis, Disease Models, Animal, Female, Humans, Ions adverse effects, Ions analysis, Kidney Failure, Chronic complications, Long-Term Care, Male, Malnutrition complications, Metal-on-Metal Joint Prostheses, Middle Aged, Postoperative Complications therapy, Prosthesis Design, Rats, Risk Factors, Arthroplasty, Replacement, Hip adverse effects, Cobalt adverse effects, Hip Prosthesis adverse effects
- Abstract
Unlabelled: As adverse events related to metal on metal hip arthroplasty have been better understood, there has been increased interest in toxicity related to the high circulating levels of cobalt ions. However, distinguishing true toxicity from benign elevations in cobalt levels can be challenging. The purpose of this review is to examine the use of cobalt alloys in total hip arthroplasty, to review the methods of measuring circulating cobalt levels, to define a level of cobalt which is considered pathological and to review the pathophysiology, risk factors and treatment of cobalt toxicity. To the best of our knowledge, there are 18 published cases where cobalt metal ion toxicity has been attributed to the use of cobalt-chromium alloys in hip arthroplasty. Of these cases, the great majority reported systemic toxic reactions at serum cobalt levels more than 100 μg/L. This review highlights some of the clinical features of cobalt toxicity, with the goal that early awareness may decrease the risk factors for the development of cobalt toxicity and/or reduce its severity., Take Home Message: Severe adverse events can arise from the release of cobalt from metal-on-metal arthroplasties, and as such, orthopaedic surgeons should not only be aware of the presenting problems, but also have the knowledge to treat appropriately., (©2016 The British Editorial Society of Bone & Joint Surgery.)
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- 2016
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19. Systemic cobalt toxicity from total hip arthroplasties: review of a rare condition Part 1 - history, mechanism, measurements, and pathophysiology.
- Author
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Cheung AC, Banerjee S, Cherian JJ, Wong F, Butany J, Gilbert C, Overgaard C, Syed K, Zywiel MG, Jacobs JJ, and Mont MA
- Subjects
- Carcinogens, Cobalt pharmacokinetics, Heart Diseases etiology, Hematologic Diseases, Humans, Ions adverse effects, Ions pharmacokinetics, Liver Diseases etiology, Metal-on-Metal Joint Prostheses adverse effects, Neoplasms etiology, Nervous System Diseases etiology, Prosthesis Design, Prosthesis Failure, Thyroid Diseases etiology, Arthroplasty, Replacement, Hip adverse effects, Cobalt adverse effects, Hip Prosthesis adverse effects
- Abstract
Unlabelled: Recently, the use of metal-on-metal articulations in total hip arthroplasty (THA) has led to an increase in adverse events owing to local soft-tissue reactions from metal ions and wear debris. While the majority of these implants perform well, it has been increasingly recognised that a small proportion of patients may develop complications secondary to systemic cobalt toxicity when these implants fail. However, distinguishing true toxicity from benign elevations in cobalt ion levels can be challenging. The purpose of this two part series is to review the use of cobalt alloys in THA and to highlight the following related topics of interest: mechanisms of cobalt ion release and their measurement, definitions of pathological cobalt ion levels, and the pathophysiology, risk factors and treatment of cobalt toxicity. Historically, these metal-on-metal arthroplasties are composed of a chromium-cobalt articulation. The release of cobalt is due to the mechanical and oxidative stresses placed on the prosthetic joint. It exerts its pathological effects through direct cellular toxicity. This manuscript will highlight the pathophysiology of cobalt toxicity in patients with metal-on-metal hip arthroplasties., Take Home Message: Patients with new or evolving hip symptoms with a prior history of THA warrant orthopaedic surgical evaluation. Increased awareness of the range of systemic symptoms associated with cobalt toxicity, coupled with prompt orthopaedic intervention, may forestall the development of further complications., (©2016 The British Editorial Society of Bone & Joint Surgery.)
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- 2016
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20. Evidence against implant-derived cobalt toxicity: case report and retrospective study of serum cobalt concentrations in an orthopedic implant population.
- Author
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Tolan NV, Sierra RJ, and Moyer TP
- Subjects
- Acetabulum diagnostic imaging, Adult, Aged, Erythrocyte Count, Female, Humans, Male, Middle Aged, Pelvis diagnostic imaging, Radiography, Retrospective Studies, Cobalt adverse effects, Cobalt blood, Hip Prosthesis adverse effects
- Abstract
Objectives: Cobalt (Co) exposure has been documented to result in increased erythropoiesis. To evaluate the potential for implant-derived Co toxicity, we examined the relationship between serum Co (sCo) and erythrocyte counts (ERY) in a metal-containing total-hip arthroplasty implant population., Methods: Retrospective review of sCo concentrations identified 77 patients with concomitant ERY. Statistical analysis was performed to determine if there was a significant difference in ERY for patients divided into clinically relevant sCo ranges. A single detailed case review of a patient with a loose mal-positioned acetabular component and significantly elevated sCo was also performed for symptoms thought to arise from Co toxicity., Results: Statistical difference in ERY was not observed between patients with significantly elevated (>10 ng/mL), elevated (4-10 ng/mL), modestly elevated (1.0-3.9 ng/mL), or normal (<1.0 ng/mL) sCo. While the detailed case report was unremarkable for any of the clinical symptoms previously reported to be associated with Co toxicity and no increase in ERY was observed, this patient's sCo was 84 ng/mL., Conclusions: Increased erythropoiesis was not observed in patients with implant-derived increased sCo. Even with a sCo 100 × the upper-limit of normal, the patient presented did not have increased ERY nor exhibit any symptoms ascribed with Co toxicity., (Copyright © 2014 The Canadian Society of Clinical Chemists. Published by Elsevier Inc. All rights reserved.)
- Published
- 2015
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21. Interaction between nickel and cobalt toxicity in Enchytraeus crypticus is due to competitive uptake.
- Author
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He E, Baas J, and Van Gestel CA
- Subjects
- Animals, Environmental Exposure analysis, Survival Analysis, Time Factors, Cobalt toxicity, Nickel toxicity, Oligochaeta drug effects, Oligochaeta metabolism, Toxicity Tests
- Abstract
Uptake and toxicity of Ni-Co mixtures in Enchytraeus crypticus were determined after 4 d, 7 d, 10 d, and 14 d exposure. Generally, body concentrations of Ni and Co increased with increasing exposure concentrations. Ni body concentration was significantly reduced in the presence of Co, whereas Ni only marginally affected Co uptake. When expressed as free ion activities, individual toxicity of Ni and Co increased with time, with median lethal concentrations (LC50) decreasing from 78.3 μM and 511 μM at 4 d to 40.4 μM and 393 μM at 14 d, respectively. When expressed as body concentrations, LC50BodyNi remained constant with time whereas LC50BodyCo increased during the first 7 d but remained stable afterwards. As identified by the MIXTOX model, interactions between Ni and Co were mainly antagonistic when based on free ion activities, however, no interaction was observed when based on body concentrations. A process-based model, incorporating exposure time to analyze the mechanisms underlying the dynamic mixture toxicity confirmed the differences in toxicokinetics of the 2 metals. The author's findings suggest that body concentrations, which incorporate bioaccumulation processes, are time-independent and can act as a more constant indicator of metal toxicity. The observed antagonism was mainly caused by competition between Co and Ni for binding sites and subsequent inhibition of Ni uptake. This competitive interaction occurred at the uptake level (toxicokinetics), but not at the target level (toxicodynamics)., (© 2014 SETAC.)
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- 2015
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22. 'Snake eyes' MRI sign: possible role of cobalt toxicity?
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Briani C, Cacciavillani M, Nicolli A, Trevisan A, and Gasparotti R
- Subjects
- Adult, Humans, Magnetic Resonance Imaging, Male, Osteoarthritis, Hip surgery, Cobalt poisoning, Hip Prosthesis adverse effects, Motor Neuron Disease etiology, Motor Neuron Disease pathology, Spinal Cord pathology
- Published
- 2015
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23. Assessing brain integrity in patients with long-term and well-functioning metal-based hip implants.
- Author
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Taleb S, Varela-Mattatall G, Allen A, Haast R, Khan AR, Kalia V, Howard JL, MacDonald SJ, Menon RS, Lanting BA, and Teeter MG
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Adult, Case-Control Studies, Hip Prosthesis, Brain diagnostic imaging, Chromium blood, Magnetic Resonance Imaging, Arthroplasty, Replacement, Hip, Cobalt blood
- Abstract
Production of metal debris from implant wear and corrosion processes is now a well understood occurrence following hip arthroplasty. Evidence has shown that metal ions can enter the bloodstream and travel to distant organs including the brain, and in extreme cases, can induce sensorial and neurological diseases. Our objective was tosimultaneously analyze brain anatomy and physiology in patients with long-term and well-functioning implants. Included were subjects who had received total hip or hip resurfacing arthroplastywith an implantation time of a minimum of 7 years (n = 28) and age- and sex-matched controls (n = 32). Blood samples were obtained to measure ion concentrations of cobalt and chromium, and the Montreal Cognitive Assessment was performed. 3T MRI brain scans were completed with an MPRAGE sequence for ROI segmentation and multiecho gradient echo sequences to generate QSM and R2* maps. Mean QSM and R2* values were recorded for five deep brain and four middle and cortical brain structures on both hemispheres: pallidum, putamen, caudate, amygdala, hippocampus, anterior cingulate, inferior temporal, and cerebellum. No differences in QSM or R2* or cognition scores were found between both groups (p > 0.6654). No correlation was found between susceptibility and blood ion levels for cobalt or chromium in any region of the brain. No correlation was found between blood ion levels and cognition scores. Clinical significance: Results suggest that metal ions released by long-term and well-functioning implants do not affect brain integrity., (© 2024 The Authors. Journal of Orthopaedic Research® published by Wiley Periodicals LLC on behalf of Orthopaedic Research Society.)
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- 2024
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24. Prosthetic hip-associated cobalt toxicity: a systematic review of case series and case reports
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J R W, Crutsen, M C, Koper, J, Jelsma, M, Heymans, I C, Heyligers, B, Grimm, N M C, Mathijssen, and M G M, Schotanus
- Subjects
CHROMIUM METALLOSIS ,prosthetic hip-associated cobalt toxicity ,CARDIOMYOPATHY ,CLINICAL-FEATURES ,cobalt ,ARTHROPROSTHETIC COBALTISM ,REVISION ,REPLACEMENT ,INTOXICATION ,MANAGEMENT ,Orthopedics and Sports Medicine ,Surgery ,ARTHROPLASTY ,hip arthroplasty - Abstract
Prosthetic hip-associated cobalt toxicity (PHACT) is caused by elevated blood cobalt concentrations after hip arthroplasty. The aim of this study is to determine which symptoms are reported most frequently and in what type of bearing. We also try to determine the blood level of cobalt concentrations associated with toxicological symptoms. A systematic review was conducted on the 10th of July according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A methodological quality assessment (risk of bias (RoB)) was performed. Primary outcomes were the reported symptoms of cobalt toxicity and the level of cobalt concentrations in blood. These levels were associated with toxicological symptoms. A total of 7645 references were found of which 67 relevant reports describing 79 patients. The two most used bearings in which PHACT was described were metal-on-metal (MoM) bearings (38 cases) and revised (fractured) ceramic-on-ceramic (CoC) bearings where the former ceramic head was replaced by a metal head (32 cases). Of all reported symptoms, most were seen in the neurological system, of which 24% were in the sensory system and 19.3% were in central/peripheral system, followed by the cardiovascular (22.1%) system. The mean cobalt concentration for MoM-bearings was 123.7 ± 96.8 ppb and 1078.2 ± 1267.5 ppb for the revised fractured CoC-bearings. We recommend not to use a metal-based articulation in the revision of a fractured CoC bearing and suggest close follow-up with yearly blood cobalt concentration controls in patients with a MoM bearing or a revised fractured CoC bearing. Level of Evidence: Level V, systematic review
- Published
- 2022
25. Prosthetic hip-associated cobalt toxicity: a systematic review of case series and case reports
- Subjects
CHROMIUM METALLOSIS ,REPLACEMENT ,prosthetic hip-associated cobalt toxicity ,INTOXICATION ,CARDIOMYOPATHY ,CLINICAL-FEATURES ,MANAGEMENT ,ARTHROPLASTY ,hip arthroplasty ,cobalt ,ARTHROPROSTHETIC COBALTISM ,REVISION - Abstract
Prosthetic hip-associated cobalt toxicity (PHACT) is caused by elevated blood cobalt concentrations after hip arthroplasty.The aim of this study is to determine which symptoms are reported most frequently and in what type of bearing. We also try to determine the blood level of cobalt concentrations associated with toxicological symptoms.A systematic review was conducted on the 10th of July according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. A methodological quality assessment (risk of bias (RoB)) was performed. Primary outcomes were the reported symptoms of cobalt toxicity and the level of cobalt concentrations in blood. These levels were associated with toxicological symptoms. A total of 7645 references were found of which 67 relevant reports describing 79 patients.The two most used bearings in which PHACT was described were metal-on-metal (MoM) bearings (38 cases) and revised (fractured) ceramic-on-ceramic (CoC) bearings where the former ceramic head was replaced by a metal head (32 cases).Of all reported symptoms, most were seen in the neurological system, of which 24% were in the sensory system and 19.3% were in central/peripheral system, followed by the cardiovascular (22.1%) system.The mean cobalt concentration for MoM-bearings was 123.7 +/- 96.8 ppb and 1078.2 +/- 1267.5 ppb for the revised fractured CoC-bearings.We recommend not to use a metal-based articulation in the revision of a fractured CoC bearing and suggest close follow-up with yearly blood cobalt concentration controls in patients with a MoM bearing or a revised fractured CoC bearing.
- Published
- 2022
26. Exposure to different cobalt chloride levels produces oxidative stress and lipidomic changes and affects the liver structure of Cyprinus carpio juveniles.
- Author
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Bejaoui S, Chetoui I, Ghribi F, Belhassen D, Abdallah BB, Fayala CB, Boubaker S, Mili S, and Soudani N
- Subjects
- Animals, Lipidomics, Water Pollutants, Chemical toxicity, Malondialdehyde metabolism, Oxidative Stress drug effects, Carps, Cobalt toxicity, Liver drug effects
- Abstract
The present investigation was undertaken to evaluate the toxic effects of CoCl
2 -induced hepatotoxicity and fatty acid changes in juvenile Cyprinus carpio. Fish were divided into six experimental groups in duplicate. The first group served as controls. The second group received the lowest exposure dose at 2.5 µg/L. In the third group, fish were exposed to 25 µg/L of CoCl2 . The fourth group was exposed to 50 µg/L of CoCl2 . The last two groups were exposed to the highest doses, 100 and 500 µg/L of CoCl2 . Total antioxidant activities were estimated using a colorimetric method. Liver fatty acid compositions were analyzed by high-performance gas chromatography (GC). Hepatopathy was identified through microscopic analysis. Exposure of C. carpio to CoCl2 resulted in hepatotoxicity, indicated by increased levels of malondialdehyde (MDA), hydrogen peroxide (H2 O2 ), protein carbonyls (PCO), and alterations in the ferric reducing antioxidant power system (FRAP). Superoxide dismutase (SOD), glutathione-S-transferase (GST), glutathione peroxidase (GPx), reduced glutathione (GSH), metallothioneins (MTs), and low thiol levels (L-SH) significantly increased, particularly under exposure to the highest CoCl2 doses (100 and 500 µg/L). Acetylcholinesterase activity decreased significantly in C. carpio exposed to graded CoCl2 doses. Additionally, there was a decrease in polyunsaturated fatty acids (PUFA), primarily n-3 PUFA, docosahexaenoic acid (DHA), and eicosapentaenoic acid (EPA), while an increase in monounsaturated (MUFA) and saturated fatty acids (SFA), including palmitic (C16:0), stearic (C18:0), palmitoleic (C16:1), and oleic (C18:1) acids, was observed. Histopathological examination of the liver confirmed hepatopathy revealing characteristic tissue changes such as leucocyte infiltration, hepatic cell membrane degradation, vacuolization, and lipid inclusions. The study provided ethnophysiology insights into the responses of C. carpio to CoCl2 -induced oxidative stress and lipidomic alteration, underscoring its potential as a bioindicator for assessing environmental impacts and metal contamination., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)- Published
- 2024
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27. Sublethal Cobalt Toxicity Effects on Rainbow Trout (Oncorhynchus mykiss)
- Author
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Nasri Fereshteh, Heydarnejad Saeed, and Nematollahi Amin
- Subjects
rainbow trout ,heavy metals ,cobalt ,growth ,biochemical parameters ,Aquaculture. Fisheries. Angling ,SH1-691 - Abstract
The purpose of this study was to investigate the sublethal Co toxicity on rainbow trout (Oncorhynchus mykiss). Trout were exposed to Co and selected parameters were evaluated at intervals of 1, 15 and 30 days. Fish exposed to higher levels of Co grew slower than fish exposed to lower levels of Co. Weight gain, specific growth rate (SGR) decreased linearly with the increase of cobalt in the water. The body condition factor (CF) of fish reared in water with low cobalt concentration decreased substantially but this decrease was not significant for fish exposed to higher cobalt concentration. The values of the feed conversion ratio (FCR) increased in fish exposed to higher levels of Co. Co significantly changed the activity of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) and decreased at day 30, and in both cases this decrease was more remarkable at day 15 so that the level of AST and ALT reached the control value at day 30. The alkaline phosphatase (ALP) level also showed a remarkable 15-day decline. There was a significant increase in glucose (G) concentration in both Co-exposed groups on day 15. However, serum cholesterol (Chl) was significantly reduced on day 15 and increased on day 30; there were no significant differences in both exposed Co-groups. The triglyceride (TG) level also decreased substantially. There was no regular pattern of total protein (TP) in the serum, so that no significant differences were found in the level of TP between low and high-exposed fish. In summary, this study suggests that exposure of essential trace elements such as cobalt may change growth and biochemical parameters, and that measurement of these parameters may be used in toxicological studies to determine the general health status of fish.
- Published
- 2019
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28. Spray of Stress Protective Chemicals Alleviates Cobalt Toxicity on Growth, Water and Nutrients Status of Hybrid Maize (Zea mays L.).
- Author
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Nazir, A. and Wahid, A.
- Subjects
- *
CORN , *POISONS , *COBALT , *INDUSTRIAL wastes , *AGRICULTURE , *SALICYLIC acid - Abstract
Frequent discharge of cobalt in ionic form (Co2+) during industrial processes is contaminating agricultural soil through the addition of industrial effluent. Cobalt is beneficial element in trace amounts but its higher concentrations in soil severely damage the growth and development of plants. In this two-year study, the pre-selected sublethal level (0.5 mM) concentration of Co2+ was applied in soil to induce toxicity on two elite maize (Zea mays L.) hybrids ('Hycorn11plus' and 'P-1429'). To encounter the toxic effects of selected sub-lethal (0.5 mM) Co2+ level (applied using CoCl2·6H2O), pre-optimized levels of three stress protective chemicals (SPCs) i.e., ascorbic acid (0.5 mM), salicylic acid (0.5 mM) and thiourea (1.0 mM) were foliar sprayed. The Co2+ and SCPs treatments were applied 10 days after seedling emergence. After ten days of treatment application, the data were recorded for the growth, nutrients and leaf water status. The shoot and root dry weights and shoot-to-root (S/R) ratio were substantially reduced by the Co2+ stress. Co2+ intoxication also enhanced the leaf water loss (LWL) while relative water contents (RWC) were reduced in Co2+ stressed plants. The Co2+ treatment reduced the intake of nitrate-N, sulfate-S, phosphate-P, K+, Ca2+, Mg2+, Zn2+, and Fe2+ contents significantly both in the shoot and root. However, from the correlation matrix, it was noted that the foliar spray of SPCs effectively alleviated the Co2+damage by preventing the influx of Co2+ ions and enhanced the growth, water and nutrient contents except for LWL. From the reduced RWC and shoot and root nutrient contents, as well as increased LWL and Co2+ contents, it is evident that Co2+ interfered with either the function or structure of water and ion-transport systems located on the plasma lemma and tonoplast of root cells. AsA was more effective among the foliar applied SPCs due to its multiple metabolic roles in plants. The foliar spray of SPCs improved the root mass and tendency to absorb essential nutrients under Co2+toxicity indicating an intimate communication between shoot and root. The use of SPCs at the selected levels is a pragmatic strategy to counteract the Co2+ damage to maize in the marginally contaminated areas. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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29. Heart transplant secondary to cobalt toxicity after hip arthroplasty revision
- Author
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Alberto M Rico Villoras, Marta I Sanz Pérez, Jesús Campo Loarte, Sergio Bartolomé García, and Aurelio Moreno Velasco
- Subjects
Chromium ,Male ,Reoperation ,inorganic chemicals ,Ceramics ,medicine.medical_specialty ,Arthroplasty, Replacement, Hip ,Artificial Limbs ,COBALT TOXICITY ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Orthopedics and Sports Medicine ,In patient ,030212 general & internal medicine ,030222 orthopedics ,business.industry ,Cobalt ,Middle Aged ,Prosthesis Failure ,Surgery ,Heavy Metal Poisoning ,Hip arthroplasty ,Polyethylene ,Heart Transplantation ,Female ,Chromium Alloys ,Hip Prosthesis ,business ,Complication ,Total hip arthroplasty - Abstract
Cobalt toxicity in patients with hip arthroplasty is a rare complication, but it should be considered in those patients who, after a ceramic fracture, were implanted with a metal-on-polyethylene prosthesis. The complete removal of ceramic particles during revision surgery can be complicated. If the bearing surface is replaced with a metal-on-polyethylene prosthesis, these residual ceramic particles may wear down the chrome-cobalt head, producing localised metallosis. This can trigger blood metal ion levels to rise, causing systemic toxicity. Visual and auditory alterations, cognitive deterioration, hypothyroidism, neuropathy, cardiomyopathy, anorexia, fatigue, diabetes, polycythemia, and respiratory and cutaneous symptoms are some of the clinical manifestations of prosthetic cobaltism.A young patient presented with multiorgan failure secondary to cobalt toxicity after a ceramic fracture and revision with a metal-on-polyethylene prosthesis; his serum cobalt and chromium levels were 652 μg/L and 270 μg/L, respectively. The patient needed a heart transplant after presenting with cobalt-induced cardiogenic shock.In a patient with a ceramic fracture who is subjected to revision surgery with a metal-on-polyethylene bearing, it is necessary to rule out the possibility of cobalt intoxication. Serum cobalt levels20 μg/L are inadmissible; in these cases, surgical treatment should be considered in the short term. A wide synovectomy and replacement of components should be performed with hard friction options, preferably with a ceramic-on-ceramic prosthesis.
- Published
- 2019
30. An Analysis of the FDA MAUDE Database and the Search for Cobalt Toxicity in Class 3 Johnson & Johnson/DePuy Metal-on-Metal Hip Implants
- Author
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Sean P Kavanagh, Kevin Kavanagh, and Steve S. Kraman
- Subjects
Male ,inorganic chemicals ,Databases, Factual ,Leadership and Management ,Arthroplasty, Replacement, Hip ,computer.software_genre ,COBALT TOXICITY ,Food and drug administration ,03 medical and health sciences ,Hip implant ,0302 clinical medicine ,Humans ,Medicine ,User Facility ,030212 general & internal medicine ,Aged ,030222 orthopedics ,Database ,United States Food and Drug Administration ,business.industry ,Public Health, Environmental and Occupational Health ,Cobalt ,Middle Aged ,United States ,Metal-on-Metal Joint Prostheses ,Johnson Johnson ,Female ,Hip Prosthesis ,business ,computer - Abstract
This study was designed to determine whether systemic cobalt toxicity as an adverse event could be documented using the Food and Drug Administration's (FDA) Manufacturer and User Facility Device Experience (MAUDE) database for cobalt-chromium containing hip implant recipients. Class 3 JohnsonJohnson (JJ)/DePuy devices were chosen for analysis because of the large number of adverse event reports related to their Pinnacle and ASR XL Acetabular hip replacement systems. A secondary goal was to characterize the reporters who are populating the information in the MAUDE database and to evaluate the quality of the data and information submitted.Using FDA MAUDE downloadable data files, 83,528 adverse event medical device narrative reports were identified with the product code of KWA (Prosthesis, Hip, Semiconstrained [Metal Uncemented Acetabular Component]) for JJ/DePuy (KWA Text File). These are class 3 devices and devices with known high failure rates. The ASR XL Acetabular hip replacement Systems and Pinnacle fall into this category. This group of implants was chosen because implant failure is associated with elevated cobalt levels. Two additional subfiles were created from Free Text records in the narrative reports containing key words that indicated a chromium or cobalt (CrCo) device and another for key words indicating elevated levels of cobalt or toxicity. These files were then searched for symptoms of systemic cobalt toxicity with Microsoft Excel using key words pertaining to symptom categories of: cognitive/memory loss, tremor, neuropathy, depression, auditory symptoms, visual symptoms, cardiac, and thyroid disease. Reports are submitted to the FDA at the device component level. It was common for multiple reports to be submitted for a single device.It was not possible to differentiate systemic versus local symptoms for adverse event reports in the neuropathy category. This category was not analyzed. The number of adverse event reports in the other categories ranged from 119 to 16 for the JJ/DePuy KWA Text File and 59 to 4 in the file of records having key words indicating potential elevation of CrCo or toxicity. Cardiac, visual, and auditory conditions were most frequently reported. With the possible exception of cardiomyopathy, the numbers of these reports are far below the prevalence expected in the general population of comparable age. The content of the MAUDE database records often contained little objective data. We found less than 4% of 14,714 records, which indicated cobalt elevation or toxicity contained units for quantitative measurement. There was also frequent use of nondescript, all-encompassing words and phrases such as "mental anguish," found in 321 KWA Text File records. Manufacturers submitted more than 99% of the reports and the most common reporter occupation was attorney, found in 42.24% of the 83,550 JJ/DePuy KWA Reporter File records. Physician was the reporter's occupation in 20.48% of reports but seldom reported directly to the FDA.We were not able find in the FDA MAUDE database meaningful warning signs to support the contention that chromium-cobalt-containing Class 3 JJ and DePuy hip implants caused systemic neurological or thyroid symptoms in patients. The incidence of reported cardiomyopathy was rare but frequent enough to be cause of concern. The redaction of most patient data along with the nonstructured nature of data entry would be expected to hinder the identification of warning signs. Even identification of the type of device could not be consistently carried out. In addition, the FDA needs to implement a methodology to identify and group all reports from a single device implanted into a patient, so duplication of event counting would not occur. Of 83,550 JJ/DePuy KWA Reporter File records, we found only two physician reports sent directly to the FDA. Almost all reports are submitted by manufacturers and are most commonly authored by attorneys. A standard of care needs to be set for physicians to report medical device adverse events to the FDA.
- Published
- 2018
31. Transcriptomic Analysis of Streptococcus suis in Response to Ferrous Iron and Cobalt Toxicity
- Author
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Mengdie Jia, Man Wei, Yunzeng Zhang, and Chengkun Zheng
- Subjects
Streptococcus suis ,transcriptome ,ferrous iron ,cobalt ,RNA sequencing ,Genetics ,QH426-470 - Abstract
Streptococcus suis is a zoonotic pathogen causing serious infections in swine and humans. Although metals are essential for life, excess amounts of metals are toxic to bacteria. Transcriptome-level data of the mechanisms for resistance to metal toxicity in S. suis are available for no metals other than zinc. Herein, we explored the transcriptome-level changes in S. suis in response to ferrous iron and cobalt toxicity by RNA sequencing. Many genes were differentially expressed in the presence of excess ferrous iron and cobalt. Most genes in response to cobalt toxicity showed the same expression trends as those in response to ferrous iron toxicity. qRT-PCR analysis of the selected genes confirmed the accuracy of RNA sequencing results. Bioinformatic analysis of the differentially expressed genes indicated that ferrous iron and cobalt have similar effects on the cellular processes of S. suis. Ferrous iron treatment resulted in down-regulation of several oxidative stress tolerance-related genes and up-regulation of the genes in an amino acid ABC transporter operon. Expression of several genes in the arginine deiminase system was down-regulated after ferrous iron and cobalt treatment. Collectively, our results suggested that S. suis alters the expression of multiple genes to respond to ferrous iron and cobalt toxicity.
- Published
- 2020
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32. Systemic Cobalt Toxicity Secondary to Metal-on-Metal Prosthetic Hip Replacement: a Case Report.
- Author
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Blackmon, Jonathan, Blackmon, Lindsey, Goode, Claire, and Douthit, Nathan
- Subjects
MULTINUCLEATED giant cells ,TOTAL hip replacement ,COBALT - Abstract
This document provides information on the topic of cobalt toxicity in patients with metal-on-metal (MoM) hip implants. Cobalt toxicity can lead to various symptoms and complications, including peripheral neuropathy, hearing loss, cardiomyopathy, and hypothyroidism. The diagnosis involves elevated cobalt levels, confirmed findings consistent with cobalt toxicity, and exclusion of other causes. Treatment options include symptomatic management, chelation therapy, and revision of the MoM hip implant. Early detection is important for better outcomes. [Extracted from the article]
- Published
- 2024
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33. Exploiting Unique Alignment of Cobalt Ferrite Nanoparticles, Mild Hyperthermia, and Controlled Intrinsic Cobalt Toxicity for Cancer Therapy
- Author
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Karen L. Livesey, Roy W. Chantrell, Teresa Pellegrino, Tamara Fernandez-Cabada, Ondrej Hovorka, Niccolò Silvestri, David Serantes, Sergio Fiorito, Mario Miscuglio, Federica Marinaro, Soraia Fernandes, Preethi Bala Balakrishnan, Sergiu Ruta, and Universidade de Santiago de Compostela. Departamento de Física Aplicada
- Subjects
Hyperthermia ,Materials science ,Combination therapy ,Cancer therapy ,medicine.medical_treatment ,Nanoparticle ,02 engineering and technology ,010402 general chemistry ,Ferric Compounds ,01 natural sciences ,Mice ,In vivo ,Cell Line, Tumor ,medicine ,Animals ,Humans ,General Materials Science ,Magnetic hyperthermia ,Particle alignment ,Chemotherapy ,Mechanical Engineering ,Cobalt ,Hyperthermia, Induced ,021001 nanoscience & nanotechnology ,medicine.disease ,Cobalt ferrite nanoparticles ,Survival Analysis ,Xenograft Model Antitumor Assays ,3. Good health ,0104 chemical sciences ,Magnetic anisotropy ,Magnetic Fields ,Mechanics of Materials ,Toxicity ,Biophysics ,Nanoparticles ,0210 nano-technology ,Cobalt toxicity - Abstract
Nanoparticle‐based magnetic hyperthermia is a well‐known thermal therapy platform studied to treat solid tumors, but its use for monotherapy is limited due to incomplete tumor eradication at hyperthermia temperature (45 °C). It is often combined with chemotherapy for obtaining a more effective therapeutic outcome. Cubic‐shaped cobalt ferrite nanoparticles (Co–Fe NCs) serve as magnetic hyperthermia agents and as a cytotoxic agent due to the known cobalt ion toxicity, allowing the achievement of both heat and cytotoxic effects from a single platform. In addition to this advantage, Co–Fe NCs have the unique ability to form growing chains under an alternating magnetic field (AMF). This unique chain formation, along with the mild hyperthermia and intrinsic cobalt toxicity, leads to complete tumor regression and improved overall survival in an in vivo murine xenograft model, all under clinically approved AMF conditions. Numerical calculations identify magnetic anisotropy as the main Co–Fe NCs’ feature to generate such chain formations. This novel combination therapy can improve the effects of magnetic hyperthermia, inaugurating investigation of mechanical behaviors of nanoparticles under AMF, as a new avenue for cancer therapy This work was partially funded by the European Research Council (starting grant ICARO, Contract No. 678109) and partially by the AIRC project (Contract No. 14527). The authors also acknowledge Centro de Supercomputación de Galicia (CESGA) for the computational resources. D.S. acknowledges Xunta de Galicia for financial support under the I2C Plan and the Strategic Grouping in Materials (AeMAT; Grant No. ED431E2018/08). This work made use of computational facilities funded by the Small items of research equipment at the University of York ENERGY (Grant No. EP/K031589/1) SI
- Published
- 2020
34. Ellagic Acid from Terminalia arjuna Fruits Protects Against Chromium and Cobalt Toxicity in Primary Human Lymphocytes
- Author
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Madhukar Rao Kudle, Sreedhar Bodiga, Vijaya Lakshmi Bodiga, and Praveen Kumar Vemuri
- Subjects
Chromium ,Endocrinology, Diabetes and Metabolism ,medicine.medical_treatment ,Lymphocyte ,Clinical Biochemistry ,Metal toxicity ,Pharmacology ,Biochemistry ,Inorganic Chemistry ,chemistry.chemical_compound ,Ellagic Acid ,medicine ,Humans ,Lymphocytes ,Ions ,Biochemistry (medical) ,Cobalt ,General Medicine ,Cytokine ,medicine.anatomical_structure ,chemistry ,Apoptosis ,Polyphenol ,Fruit ,Toxicity ,Terminalia ,Cytokines ,Cytokine secretion ,Ellagic acid - Abstract
Increased accumulation of heavy metal ions such as Cr6+ and Co2+ due to release from prostheses and metallic implants has been reported. These metal ions have been shown to affect both resting and activated lymphocytes. Natural remedies towards mitigating the cytotoxic effects of metal ions are clearly warranted. Polyphenolic compounds which are part of hydrolysable tannins from natural plant sources are considered effective in cheating heavy metal ions in a biological system. We have isolated and characterized a polyphenolic compound (ellagic acid) from Terminalia arjuna fruits that has been tested for its ability to attenuate the metal ion toxicity in primary human lymphocytes in culture. Cr6+ and Co2+ (100 μM) decreased lymphocyte viability and proliferation and increased apoptosis of resting as well as CD3 and/or CD28-stimulated lymphocytes. Metal ions markedly diminished the cytokine (interleukin-2 and interferon-γ) secretion from activated lymphocytes. Pretreatment with ellagic acid at 25, 50, and 100 μM concentrations effectively improved viability and proliferative responses of both resting and activated lymphocytes, while attenuating the apoptotic index. Ellagic acid also tended to normalize the cytokine secretion from the activated lymphocytes even in the presence of metal ions, suggesting broad effects on the adaptive immune system.
- Published
- 2021
35. Cobalt toxicity after revision to a metal-on-polyethylene total hip arthroplasty for fracture of ceramic acetabular component
- Author
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Andrew Harris, MD, Joey Johnson, MD, P Kaveh Mansuripur, MD, and Richard Limbird, MD
- Subjects
Ceramic ,Cobalt ,Metal ,Revision ,Total hip arthroplasty ,Toxicity ,Orthopedic surgery ,RD701-811 - Abstract
Cobalt metallosis after revision metal-on-polyethylene total hip arthroplasty for catastrophic failure of ceramic components is uncommon but a potentially devastating complication. Common findings associated with heavy metal toxicity include cardiomyopathy, hypothyroidism, skin rashes, visual disturbances, hearing changes, polycythemia, weakness, fatigue, cognitive deterioration, and neuropathy. We report a case of a 57-year-old woman who presented with complaints of progressively worsening hip pain, fatigue, memory loss, lower extremity sensory loss, persistent tachycardia, and ocular changes 5 years after synovectomy and revision of a failed ceramic-on-ceramic total hip arthroplasty to metal-on-polyethylene components. A cobalt level of 788.1 ppb and chromium level of 140 ppb were found on presentation and subsequently decreased to 468.8 ppb and 105.9 ppb, respectively, 2 weeks after revision to a ceramic-on-polyethylene total hip arthroplasty. Improvement of symptoms accompanied this decrease in cobalt and chromium levels. Revision of failed ceramic arthroplasties with later-generation ceramics to avoid this potential complication is recommended.
- Published
- 2015
- Full Text
- View/download PDF
36. Spectroscopic study on the interaction of Co2+ with citrate-Mn3O4: Towards the development of nanotherapy against cobalt toxicity
- Author
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Aniruddha Adhikari, Pritam Biswas, Mahasweta Goswami, Susmita Mondal, Manali Singh, Samir Kumar Pal, and Ria Ghosh
- Subjects
inorganic chemicals ,010302 applied physics ,chemistry.chemical_classification ,Reactive oxygen species ,DNA damage ,Chemistry ,chemistry.chemical_element ,02 engineering and technology ,021001 nanoscience & nanotechnology ,medicine.disease ,01 natural sciences ,Combinatorial chemistry ,Metal ,Cobalt poisoning ,Detoxification ,visual_art ,0103 physical sciences ,medicine ,visual_art.visual_art_medium ,Chelation ,Steady state (chemistry) ,0210 nano-technology ,Cobalt - Abstract
Cobalt (Co) although, an essential element playing a key role in several physiological and biological processes, can transform into a potential toxin when present in higher amounts or in certain chemical forms. The increasing usage of transition metals in industries, agriculture, medicines and technology has led to an alarming rise in cobalt poisoning cases. Exposure to cobalt can cause several health hazards including neurodegenerative disorders like Alzheimer’s disease, Parkinson’s disease, etc. Cobalt may interact with several proteins in the cellular milieu, generating reactive oxygen species (ROS) and thereby triggering apoptosis of the neural cells via DNA damage. The most common method of removal of such metals from the body is by the use of metal chelators. In this study, we report a facile strategy for the clearance of Co (II) from the physiological milieu using citrate functionalized Mn3O4 NPs (C-Mn3O4 NPs). The chelation ability of C-Mn3O4 NPs has been evaluated using steady state and pico-second resolved optical spectroscopy. Our studies reveal that C-Mn3O4 NPs form a stable complex with cobalt ions, thereby reducing the ability of Co2+ to produce reactive oxygen species (ROS) via Fenton like reaction and hence function as a novel nanotherapeutic for the detoxification of cobalt in the human system.
- Published
- 2021
37. Fatal cobalt toxicity after total hip arthroplasty revision for fractured ceramic components
- Author
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Michael G. Abesamis, Joseph H. Yanta, Todd M. Phillips, and Kimberly A. Fox
- Subjects
Reoperation ,Ceramics ,medicine.medical_specialty ,Metallic debris ,Arthroplasty, Replacement, Hip ,Periprosthetic ,Context (language use) ,030204 cardiovascular system & hematology ,Toxicology ,COBALT TOXICITY ,03 medical and health sciences ,Fatal Outcome ,0302 clinical medicine ,polycyclic compounds ,medicine ,Humans ,Metallosis ,Ceramic ,030222 orthopedics ,business.industry ,food and beverages ,Soft tissue ,Cobalt ,General Medicine ,Middle Aged ,medicine.disease ,Prosthesis Failure ,Surgery ,visual_art ,visual_art.visual_art_medium ,Female ,Chromium Alloys ,Hip Prosthesis ,business ,Total hip arthroplasty - Abstract
Post-arthroplasty metallosis, which refers to metallic corrosion and deposition of metallic debris in the periprosthetic soft tissues of the body, is an uncommon complication. Systemic cobalt toxicity post-arthroplasty is extremely rare. The few known fatal cases of cobalt toxicity appear to be a result of replacing shattered ceramic heads with metal-on-metal or metal-on-polyethylene implants. Friction between residual shards of ceramic and cobalt-chromium implants allows release of cobalt into the synovial fluid and bloodstream, resulting in elevated whole blood cobalt levels and potential toxicity.This is a single patient chart review of a 60-year-old woman with prior ceramic-on-ceramic right total hip arthroplasty complicated by fractured ceramic components and metallosis of the joint. She underwent synovectomy and revision to a metal-on-polyethylene articulation. Ten months post-revision, she presented to the emergency department (ED) with right hip pain, dyspnea, worsening hearing loss, metallic dysgeusia, and weight loss. Chest CTA revealed bilateral pulmonary emboli (PE), and echocardiogram revealed new cardiomyopathy with global left ventricular hypokinesis with an ejection fraction (EF) of 35-40% inconsistent with heart strain from PE. Whole blood cobalt level obtained two days into her admission was 424.3 mcg/L and 24-h urine cobalt level was 4830.5 mcg/L. Although the patient initially clinically improved with regard to her PE and was discharged to home on hospital day 5, she returned 10 days later with a right hip dislocation and underwent closed reduction of the hip. The patient subsequently decompensated, developing cardiogenic shock, and respiratory failure. She went into pulseless electrical activity (PEA) and expired. Autopsy revealed an extensive metallic effusion surrounding the right hip prosthesis that tested positive for cobalt (41,000 mcg/L). There was also cobalt in the heart muscle tissue (2.5 mcg/g). A whole blood cobalt level obtained two days before she expired was 641.6 mcg/L.This is a case of fatal cobalt-induced cardiomyopathy in a patient whose ceramic components of a total hip arthroplasty fractured causing metallosis with worsening cobalt toxicity. We recommend that when a fractured device is revised with a prosthesis with cobalt-chromium components, whole blood and urine cobalt measurements should be obtained and periodically monitored to evaluate for rising concentrations. Providers should be aware of clinical signs and symptoms of cobalt toxicity in patients who have prostheses with cobalt-chromium components. If suspected, toxicology and orthopedics should be involved for possible chelation and removal of the prosthesis.
- Published
- 2016
38. Assessing the Clinical Value of Objective and Patient-Reported Audiovestibular Outcome Measures in the Risk Estimation of Systemic Cobalt Toxicity for Patients With a Metal-on-Metal Hip Implant
- Author
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Laura Leyssens, Bart Vinck, Catherine Van Der Straeten, Ingeborg Dhooge, Floris L. Wuyts, Philip Winnock de Grave, Filiep Bataillie, Jan Van Melkebeek, Koen De Smet, Ruth Van Hecke, Maya Danneels, and Leen Maes
- Subjects
Speech and Hearing ,Otorhinolaryngology ,Metals ,Metal-on-Metal Joint Prostheses ,Audiometry, Pure-Tone ,Humans ,Human medicine ,Cobalt ,Hip Prosthesis ,Patient Reported Outcome Measures - Abstract
Objectives: Based on limited evidence from case reports and small cohort studies of metal-on-metal (MoM) hip implant patients with presumed systemic cobalt (Co) toxicity, and a few animal studies on Co-induced damage to the otovestibular system, it was hypothesised that Co exhibits an ototoxic potential alongside other systemic manifestations. Preliminary investigations from our research group in MoM patients confirmed this assumption for the auditory system, whereas no signs of Co-induced vestibular impairment were detected, and a clear dose-response relationship between the auditory function and the blood Co levels was lacking. Therefore, the current study aimed to extend and validate these findings in a larger sample of MoM patients and control subjects, to explore the potential clinical value of audiovestibular outcome measures in the risk estimation of systemic Co toxicity in this patient population. Design: Fifty patients (32 to 68 years) with a primary unilateral/bilateral MoM hip implant were matched for age, gender, and noise exposure to 50 nonimplanted control subjects. Both groups underwent the same protocol, consisting of an objective auditory [i.e., conventional and high-frequency audiometry, transient-evoked and distortion (TEOAEs and DPOAEs), auditory brainstem responses] and vestibular (i.e., cervical and ocular vestibular evoked myogenic potentials, horizontal and vertical video head impulse tests) test battery, a questionnaire inquiring auditory, balance, and general neurological symptoms, and a blood sample collection to determine the plasma Co concentration. Results: The auditory test battery presented consistently higher audiometric thresholds in the MoM patient group, with group differences ranging from 2.1 to 5.7 dB in the lower frequencies (0.25 to 6.0 kHz) and from 4.6 to 9.3 dB in the high frequencies (8.0 to 14.0 kHz). Group differences at high frequencies were statistically significant (p 0.01). Six patients had elevated Co levels according to our local institutional threshold (>4 or 5 mu g/l for unilateral or bilateral MoM hip implants, resp.), but their audiovestibular outcome measures did not differ significantly from those of the other patients. Conclusions: Corresponding to our preliminary investigations, the results indicate possibly Co-induced (predominantly high-frequency) auditory impairment, probably triggered by toxic damage to the cochlear structures. However, the low mean difference values, the lack of group differences for the patient-reported outcome measures, and the lack of any relationship with the blood Co levels strongly reduce the clinical relevance of these findings. Therefore, the risk of Co-induced ototoxic impairment is considered to be clinically negligible for the majority of MoM hip implant patients, and the use of auditory tests in the risk estimation of systemic Co toxicity should be decided on a case-by-case basis.
- Published
- 2022
39. Extreme Cobalt Toxicity: Bearing the Brunt of a Failed Ceramic Liner: A Case Report
- Author
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Alison Colvin, Gareth H Prosser, Jamie T. Griffiths, Alan M. Kop, Piers Yates, and Daniel Meyerkort
- Subjects
inorganic chemicals ,Ceramic bearing ,Bearing (mechanical) ,business.industry ,Dentistry ,chemistry.chemical_element ,law.invention ,COBALT TOXICITY ,Femoral head ,medicine.anatomical_structure ,chemistry ,law ,visual_art ,visual_art.visual_art_medium ,Medicine ,Orthopedics and Sports Medicine ,Surgery ,Ceramic ,business ,Cobalt - Abstract
Case: We present a case of systemic cobalt toxicity secondary to third-body wear of a cobalt-chromium (CoCr) femoral head following revision of a fractured ceramic bearing. Removal of the CoCr head was followed by resolution of much of the systemic symptoms. Conclusion: This case supports previous reports of cobalt toxicity secondary to catastrophic third-body wear of a CoCr femoral head following a fractured ceramic bearing. It also demonstrates the potential reversibility of many systemic sequelae associated with cobalt toxicity. To our knowledge, this case represents the highest documented blood cobalt level (45,840 nmol/L).
- Published
- 2017
40. Sublethal Cobalt Toxicity Effects on Rainbow Trout (Oncorhynchus mykiss)
- Author
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Saeed Heydarnejad, Amin Nematollahi, and Fereshteh Nasri
- Subjects
growth ,SH1-691 ,chemistry.chemical_element ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,Aquatic Science ,01 natural sciences ,Feed conversion ratio ,chemistry.chemical_compound ,Animal science ,Aquaculture. Fisheries. Angling ,medicine ,heavy metals ,Ecology, Evolution, Behavior and Systematics ,0105 earth and related environmental sciences ,Ecology ,biology ,Triglyceride ,04 agricultural and veterinary sciences ,biology.organism_classification ,rainbow trout ,cobalt ,Trout ,chemistry ,Toxicity ,040102 fisheries ,0401 agriculture, forestry, and fisheries ,Alkaline phosphatase ,biochemical parameters ,Rainbow trout ,medicine.symptom ,Cobalt ,Weight gain - Abstract
The purpose of this study was to investigate the sublethal Co toxicity on rainbow trout (Oncorhynchus mykiss). Trout were exposed to Co and selected parameters were evaluated at intervals of 1, 15 and 30 days. Fish exposed to higher levels of Co grew slower than fish exposed to lower levels of Co. Weight gain, specific growth rate (SGR) decreased linearly with the increase of cobalt in the water. The body condition factor (CF) of fish reared in water with low cobalt concentration decreased substantially but this decrease was not significant for fish exposed to higher cobalt concentration. The values of the feed conversion ratio (FCR) increased in fish exposed to higher levels of Co. Co significantly changed the activity of aspartate aminotransferase (AST) and alanine aminotransferase (ALT) and decreased at day 30, and in both cases this decrease was more remarkable at day 15 so that the level of AST and ALT reached the control value at day 30. The alkaline phosphatase (ALP) level also showed a remarkable 15-day decline. There was a significant increase in glucose (G) concentration in both Co-exposed groups on day 15. However, serum cholesterol (Chl) was significantly reduced on day 15 and increased on day 30; there were no significant differences in both exposed Co-groups. The triglyceride (TG) level also decreased substantially. There was no regular pattern of total protein (TP) in the serum, so that no significant differences were found in the level of TP between low and high-exposed fish. In summary, this study suggests that exposure of essential trace elements such as cobalt may change growth and biochemical parameters, and that measurement of these parameters may be used in toxicological studies to determine the general health status of fish.
- Published
- 2019
41. Exogenously applied melatonin enhanced the tolerance of Brassica napus against cobalt toxicity by modulating antioxidant defense, osmotic adjustment, and expression of stress response genes.
- Author
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Ali, Skhawat, Gill, Rafaqat A., Ulhassan, Zaid, Zhang, Na, Hussain, Saddam, Zhang, Kangni, Huang, Qian, Sagir, Muhammad, Tahir, Muhammad Bilal, Gill, Muhammad B., Mwamba, Theodore M., Ali, Basharat, and Zhou, Weijun
- Subjects
RAPESEED ,PHENYLALANINE ammonia lyase ,HEAT shock proteins ,COBALT ,POLYPHENOL oxidase - Abstract
The excessive accumulation of cobalt (Co) in plant tissues severely impairs plant growth that ultimately reduces the yield. However, melatonin (MT) has been known to mediate the abiotic stress tolerance in plants. The present study aimed at investigating the protective mechanisms of exogenously applied MT (0, 50 and 100 μM) under Co (0, 100, 200 and 300 μM) stress by focusing on morpho-physiological, biochemical and cellular characterizations of Brassica napus plants. Cobalt (300 μM) alone treatment drastically inhibited the stomatal conductance, plant height (45%), leaf area (30%), free amino acid (139%), relative electrolyte leakage (109%), and total soluble sugars (71%), compared with the control. However, the exogenous supply of MT notably minimized the oxidative damage, lipid peroxidation and maintained the membrane integrity under Co-toxicity by restricting the overproduction of ROS (H 2 O 2 and O 2
• ), and MDA in leaves and roots. Melatonin significantly enhanced the activities of ROS-scavenging antioxidant enzymes, secondary metabolism-related phenylalanine ammonia lyase (PAL), polyphenol oxidase (PPO), stress-responsive genes (heat shock protein as HSP-90 , methyl transferase as MT) and regulated the Co-transporters, especially in roots. These findings indicated that an exogenous supply of MT improve the plant morphology, photosynthetic apparatus, osmotic adjustments, and antioxidant defense systems by enhancing the Co-detoxification in B. napus plants. [Display omitted] • Cobalt stress drastically inhibited the plant growth and photosynthetic efficiency. • Exogenous supply of melatonin notably minimized Co-toxicity in plants. • Melatonin significantly enhanced the activities of antioxidant enzymes. • Application of MT significantly increased secondary metabolism-related enzymes. • Co-transporters regulated in B. napus roots with exogenously MT application. [ABSTRACT FROM AUTHOR]- Published
- 2023
- Full Text
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42. Reply to "Efficacy of unithiol (2,3-dimercaptopropanesulfonate) and acetylcysteine in a patient with arthroplastic cobalt toxicity".
- Author
-
Carnovale, Monica, Lonati, Davide, Schicchi, Azzurra, Petrolini, Valeria Margherita, and Locatelli, Carlo Alessandro
- Subjects
- *
COBALT , *ACETYLCYSTEINE , *ARTIFICIAL hip joints , *CHELATION therapy , *TOTAL hip replacement - Abstract
Dear Editor, We read with great interest the letter from Pelclova and Lach [[1]] on the efficacy of unithiol (2,3-dimercaptopropanesulfonate) and acetylcysteine in a patient with arthroplastic cobalt toxicity. Acetylcysteine increases cobalt urinary excretion and consistently maintains the serum cobalt concentration less than the threshold of 10 g/L, which we believe to be the goal in patients with metal-on-metal implants in order to minimise cobalt toxicity from the existing prosthesis [[3]]. The authors stated that chelation therapy, either with unithiol or acetylcysteine, is often clinically inefficient in patients with very elevated cobalt concentrations (greater than 100 g/L) as long as the damaged prosthesis remains I in situ i . [Extracted from the article]
- Published
- 2023
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43. Cobalt toxicity in humans : a review of the potential sources and systemic health effects
- Author
-
Laura Leyssens, Catherine Van Der Straeten, Bart Vinck, Leen Maes, and Floris L. Wuyts
- Subjects
WHOLE-BLOOD CONCENTRATIONS ,LUNG-DISEASE ,CELL INTERSTITIAL PNEUMONIA ,Physiology ,02 engineering and technology ,010501 environmental sciences ,EXHALED BREATH CONDENSATE ,Toxicology ,01 natural sciences ,COBALT TOXICITY ,Systemic cobalt toxicity ,Adverse health effect ,SOLID-WASTE INCINERATION ,Pharmacology & Pharmacy ,BEER-DRINKERS MYOCARDOSIS ,Pharmacology. Therapy ,TOTAL HIP-REPLACEMENT ,Environmental exposure ,Cobalt ,021001 nanoscience & nanotechnology ,ALLERGIC CONTACT-DERMATITIS ,Metal-on-Metal Joint Prostheses ,Medical cobalt exposure ,Environmental Pollutants ,0210 nano-technology ,Risk assessment ,Life Sciences & Biomedicine ,Environmental Monitoring ,medicine.medical_specialty ,Metal-on-metal hip implants ,Systemic health ,Prosthesis Design ,Risk Assessment ,Occupational Exposure ,Occupational cobalt exposure ,Toxicity Tests ,medicine ,Endocrine system ,Humans ,Vitamin B12 ,0105 earth and related environmental sciences ,Science & Technology ,Dose-Response Relationship, Drug ,business.industry ,Environmental Exposure ,Surgery ,Diet ,HIGH-RESOLUTION CT ,Free fraction ,Dietary Supplements ,1115 Pharmacology And Pharmaceutical Sciences ,Dietary cobalt exposure ,METAL-ION LEVELS ,Hip Prosthesis ,business - Abstract
Cobalt (Co) and its compounds are widely distributed in nature and are part of numerous anthropogenic activities. Although cobalt has a biologically necessary role as metal constituent of vitamin B-12, excessive exposure has been shown to induce various adverse health effects. This review provides an extended overview of the possible Co sources and related intake routes, the detection and quantification methods for Co intake and the interpretation thereof, and the reported health effects. The Co sources were allocated to four exposure settings: occupational, environmental, dietary and medical exposure. Oral intake of Co supplements and internal exposure through metal-on-metal (MoM) hip implants deliver the highest systemic Co concentrations. The systemic health effects are characterized by a complex clinical syndrome, mainly including neurological (e.g. hearing and visual impairment), cardiovascular and endocrine deficits. Recently, a biokinetic model has been proposed to characterize the dose-response relationship and effects of chronic exposure. According to the model, health effects are unlikely to occur at blood Co concentrations under 300 [mu g/1(100 mu g/1 respecting a safety factor of 3) in healthy individuals, hematological and endocrine dysfunctions are the primary health endpoints, and chronic exposure to acceptable doses is not expected to pose considerable health hazards. However, toxic reactions at lower doses have been described in several cases of malfunctioning MoM hip implants, which may be explained by certain underlying pathologies that increase the individual susceptibility for Co-induced systemic toxicity. This may be associated with a decrease in Co bound to serum proteins and an increase in free ionic Co2+. As the latter is believed to be the primary toxic form, monitoring of the free fraction of Co2+ might be advisable for future risk assessment. Furthermore, future research should focus on longitudinal studies in the clinical setting of MoM hip implant patients to further elucidate the dose-response discrepancies.
- Published
- 2017
44. A Review on Arthroprosthetic Cobaltism: Manufacturer’s Product liability for causing Iatrogenic Cobalt toxicity
- Author
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Devendra Richhariya, Santosh Kumar Verma, and Vivekanshu Verma
- Subjects
inorganic chemicals ,medicine.medical_specialty ,business.industry ,Dentistry ,chemistry.chemical_element ,Consumer protection ,medicine.disease ,medicine.disease_cause ,Asbestos ,COBALT TOXICITY ,Cobalt poisoning ,chemistry ,Orthopedic surgery ,Medicine ,Implant ,business ,Cobalt ,Organ system - Abstract
Cobalt toxicity is a well-documented complication of total hip arthroplasty (THA) when cobalt-chrome implants are utilized. A recent area of attention is “cobaltism, ” which results from cobalt exposure from cobalt-containing orthopedic implants, chemistry kits, weather indicators, antiquated anemia therapies, cement, fly ash, dyes, mineral wool, asbestos, molds for ceramic tiles, mining, porcelain paint, orthopedic implants, and dental hardware. Like other transition metals, cobalt is a multiorgan toxin. Organ systems affected by acute cobalt poisoning include endocrine, gastrointestinal, central and peripheral nervous system, hematologic, cardiovascular, and metabolic. Chronic inhalational exposures affect the pulmonary system and dermatologic system.
- Published
- 2019
45. Sequestration of cobalt and nickel by biofilm forming bacteria isolated from spent nuclear fuel pool water.
- Author
-
Karley D, Shukla SK, and Rao TS
- Subjects
- Nickel toxicity, Water, Environmental Monitoring, Bacteria, Biofilms, Cobalt, Metals, Heavy toxicity
- Abstract
In the current study, six bacterial types, isolated from spent nuclear fuel (SNF) pool facility, were investigated for their ability to sequester heavy metals (cobalt and nickel). Biofilm formation by the six bacterial isolates, viz., Bacillus subtilis, Staphylococcus species, Staphylococcus arlettae, Staphylococcus epidermidis, Staphylococcus auricularis, and Chryseobacterium gleum, were assayed, and they were found to have significant biofilm forming property. Their biofilms were characterised using confocal scanning laser microscopy, and their potential to accumulate Co
2+ and Ni2+ from bulk solutions was analysed with respect to time. A comparative assessment of bioaccumulation capacity was done using biofilms, planktonic cells, and live vs dead cells. The strains accumulated Co2+ and Ni2+ in the range of 4 × 10-4 to 1 × 10-5 g/mg of cell biomass. It is interesting to note that dead biomass also showed significant removal of the two metal ions, suggesting an alternative process for metal removal. This study suggests that hostile environments can be a repertoire of putative bacterial species with potential heavy metals and other contaminants remediation properties., (© 2023. The Author(s), under exclusive licence to Springer Nature Switzerland AG.)- Published
- 2023
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46. Cobalt Toxicity and Human Health
- Author
-
Marufa Rumman and Md. Hafiz Uddin
- Subjects
inorganic chemicals ,Chemistry ,chemistry.chemical_element ,Pharmacology ,medicine.disease_cause ,Excretion ,Toxicity ,medicine ,Endocrine system ,Ingestion ,Cyanocobalamin ,Vitamin B12 ,Cobalt ,Oxidative stress - Abstract
Cobalt naturally occurs in air, rocks, soils, and water, and it has diverse industrial and biomedical applications. It is an essential trace metal and cofactor for vitamin B12 (cyanocobalamin) but can be toxic after a minimal increase in concentration. Inhalation and dietary ingestion are the main external sources of cobalt exposure; however, internal exposure from cobalt hip or oral implants and the use of nanoparticles are on the rise. Cobalt is absorbed through the gastrointestinal tract and accumulated in the liver, kidney, pancreas, heart, skeleton, and skeletal muscle. The deficiency in humans with balanced diet has never been reported. It is excreted through kidney, and excretion efficiency decreases with time and elevated dose. Chronic increases of cobalt in serum may result in long-term adverse biological effects such as immune modulation, oxidative DNA damage, and maybe carcinogenesis. Serum cobalt concentrations higher than 300 µg/L are associated with neurological, cardiac, hematological, and endocrine toxicity. The higher level of cobalt in the tissue competes with calcium uptake and influences other signaling involving hypoxic response, oxidative stress, and energy metabolism. Possible abuse of cobalt supplements by athletes as an alternative to Epo doping for enhancing aerobic performance is a deep concern. Food and Drug Administration (FDA) has not established any guidance, however, the European Food Safety Authority (EFSA) has suggested a dose of 600 µg/day.
- Published
- 2020
47. Systemic cobalt toxicity from total hip arthroplasties: review of a rare condition Part 2. measurement, risk factors, and step-wise approach to treatment
- Author
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A. C. Cheung, Samik Banerjee, Jeffrey J. Cherian, Michael G. Zywiel, Michael A. Mont, Jagdish Butany, Florence Wong, K. Syed, Cameron Gilbert, Joshua J. Jacobs, and Christopher B. Overgaard
- Subjects
inorganic chemicals ,Male ,medicine.medical_specialty ,Arthroplasty, Replacement, Hip ,Total hip replacement ,chemistry.chemical_element ,Prosthesis Design ,COBALT TOXICITY ,03 medical and health sciences ,0302 clinical medicine ,Postoperative Complications ,Condition part ,Risk Factors ,medicine ,Cobalt metal ,Animals ,Humans ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,Intensive care medicine ,Adverse effect ,Aged ,Chelating Agents ,Ions ,030222 orthopedics ,business.industry ,Malnutrition ,Cobalt ,Middle Aged ,Long-Term Care ,Surgery ,Rats ,Disease Models, Animal ,chemistry ,Toxicity ,Metal-on-Metal Joint Prostheses ,Cobalt ions ,Kidney Failure, Chronic ,Female ,Hip Prosthesis ,business - Abstract
As adverse events related to metal on metal hip arthroplasty have been better understood, there has been increased interest in toxicity related to the high circulating levels of cobalt ions. However, distinguishing true toxicity from benign elevations in cobalt levels can be challenging. The purpose of this review is to examine the use of cobalt alloys in total hip arthroplasty, to review the methods of measuring circulating cobalt levels, to define a level of cobalt which is considered pathological and to review the pathophysiology, risk factors and treatment of cobalt toxicity. To the best of our knowledge, there are 18 published cases where cobalt metal ion toxicity has been attributed to the use of cobalt-chromium alloys in hip arthroplasty. Of these cases, the great majority reported systemic toxic reactions at serum cobalt levels more than 100 μg/L. This review highlights some of the clinical features of cobalt toxicity, with the goal that early awareness may decrease the risk factors for the development of cobalt toxicity and/or reduce its severity. Take home message: Severe adverse events can arise from the release of cobalt from metal-on-metal arthroplasties, and as such, orthopaedic surgeons should not only be aware of the presenting problems, but also have the knowledge to treat appropriately. Cite this article: Bone Joint J 2016;98-B:14–20.
- Published
- 2016
48. Systemic cobalt toxicity from total hip arthroplasties: review of a rare condition Part 1 - history, mechanism, measurements, and pathophysiology
- Author
-
A. C. Cheung, Florence Wong, Christopher B. Overgaard, Michael A. Mont, Jagdish Butany, Cameron Gilbert, Jeffrey J. Cherian, K. Syed, Samik Banerjee, Joshua J. Jacobs, and Michael G. Zywiel
- Subjects
inorganic chemicals ,medicine.medical_specialty ,Heart Diseases ,Arthroplasty, Replacement, Hip ,Total hip replacement ,chemistry.chemical_element ,Prosthesis Design ,COBALT TOXICITY ,03 medical and health sciences ,0302 clinical medicine ,Neoplasms ,Medicine ,Humans ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,Adverse effect ,Pathological ,Ions ,030222 orthopedics ,business.industry ,Mechanism (biology) ,Liver Diseases ,Cobalt ,Hematologic Diseases ,Thyroid Diseases ,Pathophysiology ,Surgery ,Prosthesis Failure ,chemistry ,Toxicity ,Carcinogens ,Metal-on-Metal Joint Prostheses ,Hip Prosthesis ,Nervous System Diseases ,business - Abstract
Recently, the use of metal-on-metal articulations in total hip arthroplasty (THA) has led to an increase in adverse events owing to local soft-tissue reactions from metal ions and wear debris. While the majority of these implants perform well, it has been increasingly recognised that a small proportion of patients may develop complications secondary to systemic cobalt toxicity when these implants fail. However, distinguishing true toxicity from benign elevations in cobalt ion levels can be challenging.The purpose of this two part series is to review the use of cobalt alloys in THA and to highlight the following related topics of interest: mechanisms of cobalt ion release and their measurement, definitions of pathological cobalt ion levels, and the pathophysiology, risk factors and treatment of cobalt toxicity. Historically, these metal-on-metal arthroplasties are composed of a chromium-cobalt articulation.The release of cobalt is due to the mechanical and oxidative stresses placed on the prosthetic joint. It exerts its pathological effects through direct cellular toxicity.This manuscript will highlight the pathophysiology of cobalt toxicity in patients with metal-on-metal hip arthroplasties.Take home message: Patients with new or evolving hip symptoms with a prior history of THA warrant orthopaedic surgical evaluation. Increased awareness of the range of systemic symptoms associated with cobalt toxicity, coupled with prompt orthopaedic intervention, may forestall the development of further complications.Cite this article: Bone Joint J 2016;98-B:6–13.
- Published
- 2016
49. Systemic effects of cobalt toxicity after revision hip replacement can manifest in intermediate to long term follow-up
- Author
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N. L. Vasukutty and Tahawwar Hasnat A. Minhas
- Subjects
Adult ,Male ,Reoperation ,medicine.medical_specialty ,Ceramics ,Time Factors ,Long term follow up ,Arthroplasty, Replacement, Hip ,Revision hip replacement ,Prosthesis Design ,COBALT TOXICITY ,03 medical and health sciences ,0302 clinical medicine ,Postoperative Complications ,medicine ,Metallosis ,Humans ,Orthopedics and Sports Medicine ,030212 general & internal medicine ,030222 orthopedics ,business.industry ,Osteonecrosis ,Large series ,Cobalt ,medicine.disease ,Surgery ,Toxicity ,Hip Prosthesis ,business - Abstract
Introduction Metal toxicity from metal-on-metal hip replacements is now well documented and several large series have reported local reactions. Although less common, there are reports of similar reactions from failed ceramic liners. Systemic effects documented in literature have been grouped into cardiac, neuro-ocular and thyroid signs. Methods and results We report a case of a patient who had revision for fractured ceramic liner to metal on polyethylene. Third body effect of the ceramic particles led to wear through of the poly liner and the head directly articulating with metal shell. He developed cardiac and neurological features of cobalt toxicity in addition to extensive soft tissue destruction. Revision of the bearing surfaces and synovectomy led to clinical improvement and fall in metal ion levels. Conclusions We recommend 2-stage revision in such situations and close monitoring of all these patients.
- Published
- 2016
50. Determination of protective effect of carob (Ceratonia siliqua L.) extract against cobalt(II) nitrate-induced toxicity.
- Author
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Macar O, Kalefetoğlu Macar T, Çavuşoğlu K, and Yalçın E
- Subjects
- Galactans, Humans, Mannans, Plant Extracts pharmacology, Plant Gums, Cobalt toxicity, Fabaceae
- Abstract
Cobalt (Co) is widely used in many industrial fields such as batteries and paints. Cobalt, a dangerous heavy metal, can be found in high concentrations in natural and human habitats. Although cobalt is an important micronutrient, it is toxic to living organisms when exposed to high amounts. Carob (Ceratonia siliqua L.) is a tree native to The Mediterranean region. Carob bean, which has high nutritional and economic value, is used against cardiovascular and gastrointestinal diseases. In addition, the antioxidant properties of carob are gaining importance in recent years. In this study, the protective effects of carob extract against the toxicity of cobalt on Allium cepa L. were investigated. For this purpose, 150 mg/L and 300 mg/L carob extract solutions and 5.5 mg/kg cobalt solutions were applied to A. cepa L. bulbs. Root emergence, weight gain, root elongation, and mitotic index (MI) decreased, while the frequency of chromosomal abnormalities (CAs) and micronucleus (MN) increased as a result of Co application. Furthermore, Co treatment triggered a noticeable rise in the activities of superoxide dismutase (SOD) and catalase (CAT) enzymes as well as the malondialdehyde (MDA) amount and the abnormalities in the meristematic cells. On the other hand, applications of carob extracts mitigated cobalt-induced damages in a dose-dependent manner in all parameters. Therefore, the current study showed that the strong preventive potential of carob extract against phytotoxicity and genotoxicity is caused by Co in a model plant. The protective effects of carob extract on Co-induced toxicity were demonstrated for the first time in terms of reducing genotoxicity and oxidative stress response.
- Published
- 2020
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