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Pugazhendhi A, Govindasamy C, Sharma A. Heavy metal accumulation in root and shoot tapioca plant biomass grown in agriculture land situated around the magnesite mine tailings. ENVIRONMENTAL RESEARCH 2024; 257:119287. [PMID: 38823610 DOI: 10.1016/j.envres.2024.119287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/16/2024] [Accepted: 05/29/2024] [Indexed: 06/03/2024]
Abstract
Heavy metal pollution in soil has emerged as a major environmental concern. This can be attributed to human activities such as mining, modern agriculture, and industrialization. This study was conducted to determine how heavy metals spread from mine tailings to surrounding farmland. Metal absorption and accumulation were also investigated in the root and shoot biomass of tapioca crops grown in those farmlands. Metal concentrations in MTAS1 were 85.3 ± 1.2, 45.8 ± 1.5, 134.8 ± 1.7, 92.4 ± 2.2, and 78.95 ± 1.4 mg kg-1, respectively. Heavy metal concentrations in MTAS2 and MTAS3 were found to be 79.62 ± 1.6, 75.4 ± 1.5, 41.31 ± 1.1, 47.8 ± 1.6, 142.5 ± 2.1, 128.4 ± 1.4, 86.2 ± 1.9, 79.5 ± 1.3, and 83.4 ± 1.2 mg kg-1, respectively. Tapioca crop shoot and root biomass grown at these metal polluted sites absorbed and accumulated significant amounts of Cd, Cu, Zn, Pb, Ni, and Mn. Notably, the metal content of the tapioca crop's root and shoot biomass exceeded national standards.
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Affiliation(s)
- Arivalagan Pugazhendhi
- Tecnologico de Monterrey, Centre of Bioengineering, NatProLab, AgroInnovationLab, School of Engineering and Sciences, Queretaro, 76130, Mexico
| | - Chandramohan Govindasamy
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh-11433, Saudi Arabia
| | - Ashutosh Sharma
- Tecnologico de Monterrey, Centre of Bioengineering, NatProLab, AgroInnovationLab, School of Engineering and Sciences, Queretaro, 76130, Mexico.
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2
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Chen C, Wu F. Children's cognitive impairment associated with cassava cyanide in Democratic Republic of the Congo: Burden of disease. PLOS GLOBAL PUBLIC HEALTH 2024; 4:e0002761. [PMID: 38227557 PMCID: PMC10790982 DOI: 10.1371/journal.pgph.0002761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Accepted: 12/06/2023] [Indexed: 01/18/2024]
Abstract
Worldwide, tens of millions of children rely on cassava as a dietary staple throughout their formative years of brain and behavioral development. Recently, it was discovered that cassava cyanide can impair children's neurocognitive development at relatively low exposures. We revisited the World Health Organization's foodborne disease burden estimate of cassava cyanide, focusing on the new health endpoint of children's cognitive impairment in Democratic Republic of the Congo (DRC). The loss of Intelligence Quotient (IQ) scores was used to measure the endpoint of cognitive impairment caused by cassava cyanide exposure, which was estimated based on the concentration-effect relationship between children's IQ scores and cyanide concentrations in flour. We estimated the burden of intellectual disability (ID) associated with cassava cyanide exposure in terms of disability-adjusted life years (DALYs). The median content of cyanide in cassava samples collected from DRC was 12.5 mg/kg, causing a median decrement to children's IQ of 2.37 points. The estimated number of children with ID associated with cassava cyanide exposure was 1,643 cases, although 1,567 of these cases (95%) were mild ID. The burden of cognitive impairment attributable to cassava cyanide in DRC alone was 13,862 DALYs per 100,000 children, or 3.01 million for all children under age 5. The results of the study, showing a significant burden of cassava cyanide-related cognitive impairment in children even at relatively low doses, can contribute to the implementation of cost-effective interventions to make cassava consumption safer for children in high-risk rural areas of DRC.
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Affiliation(s)
- Chen Chen
- School of Public Health, Shandong University, Jinan, Shandong Province, China
- Department of Food Science & Human Nutrition, Michigan State University, East Lansing, Michigan, United States of America
| | - Felicia Wu
- Department of Food Science & Human Nutrition, Michigan State University, East Lansing, Michigan, United States of America
- Agricultural, Food, and Resource Economics, Michigan State University, East Lansing, Michigan, United States of America
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3
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Zhu K, Wan Y, Zhu B, Wang H, Liu Q, Xie X, Jiang Q, Feng Y, Xiao P, Xiang Z, Song R. Association of perchlorate, thiocyanate, and nitrate with dyslexic risk. CHEMOSPHERE 2023; 325:138349. [PMID: 36898444 DOI: 10.1016/j.chemosphere.2023.138349] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2022] [Revised: 02/28/2023] [Accepted: 03/07/2023] [Indexed: 06/18/2023]
Abstract
Perchlorate, thiocyanate, and nitrate are sodium iodide symporter (NIS) inhibitors that disturb iodide uptake into the thyroid and have been implicated in child development. However, no data are available on the association between exposure to/related with them and dyslexia. Here, we examined the association of exposure to/related with the three NIS inhibitors with the risk of dyslexia in a case-control study. The three chemicals were detected in urine samples of 355 children with dyslexia and 390 children without dyslexia from three cities in China. The adjusted odds ratios for dyslexia were examined using logistic regression models. The detection frequencies of all the targeted compounds were 100%. After adjusting for multiple covariates, urinary thiocyanate was significantly associated with the risk of dyslexia (P-trend = 0.02). Compared with the lowest quartile, children within the highest quartile had a 2.66-fold risk of dyslexia (95% confidence interval: 1.32, 5.36]. Stratified analyses showed that the association between urinary thiocyanate level and the risk of dyslexia was more pronounced among boys, children with fixed reading time, and those without maternal depression or anxiety during pregnancy. Urinary perchlorate and nitrate levels were not associated with the risk of dyslexia. This study suggests the possible neurotoxicity of thiocyanate or its parent compounds in dyslexia. Further investigation is warranted to confirm our findings and clarify the potential mechanisms.
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Affiliation(s)
- Kaiheng Zhu
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yanjian Wan
- Laboratory Center for Public Health Service, Institute of Environmental Health, Wuhan Centers for Disease Control & Prevention, Wuhan, Hubei, 430024, China.
| | - Bing Zhu
- Hangzhou Center for Disease Control and Prevention, Hangzhou, 310021, China
| | - Haoxue Wang
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Qi Liu
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Xinyan Xie
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Qi Jiang
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Yanan Feng
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Pei Xiao
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Zhen Xiang
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Ranran Song
- Department of Maternal and Child Health and MOE Key Lab of Environment and Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China.
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Alomaja O, Shofer FS, Greenwood JC, Piel S, Clayman C, Mesaros C, Kao SH, Shin SS, Ehinger JK, Kilbaugh TJ, Jang DH. Alteration in Cerebral Metabolism in a Rodent Model of Acute Sub-lethal Cyanide Poisoning. J Med Toxicol 2023; 19:196-204. [PMID: 36757579 PMCID: PMC10050286 DOI: 10.1007/s13181-022-00928-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 12/20/2022] [Accepted: 12/29/2022] [Indexed: 02/10/2023] Open
Abstract
INTRODUCTION Cyanide exposure can occur in various settings such as industry and metallurgy. The primary mechanism of injury is cellular hypoxia from Complex IV (CIV) inhibition. This leads to decreased ATP production and increased reactive oxygen species production. The brain and the heart are the organs most affected due to their high metabolic demand. While the cardiac effects of cyanide are well known, the cerebral effects on cellular function are less well described. We investigated cerebral metabolism with a combination of brain respirometry, microdialysis, and western blotting using a rodent model of sub-lethal cyanide poisoning. METHODS Twenty rodents were divided into two groups: control (n = 10) and sub-lethal cyanide (n = 10). Cerebral microdialysis was performed during a 2 mg/kg/h cyanide exposure to obtain real-time measurements of cerebral metabolic status. At the end of the exposure (90 min), brain-isolated mitochondria were measured for mitochondrial respiration. Brain tissue ATP concentrations, acyl-Coenzyme A thioesters, and mitochondrial content were also measured. RESULTS The cyanide group showed significantly increased lactate and decreased hypotension with decreased cerebral CIV-linked mitochondrial respiration. There was also a significant decrease in cerebral ATP concentration in the cyanide group and a significantly higher cerebral lactate-to-pyruvate ratio (LPR). In addition, we also found decreased expression of Complex III and IV protein expression in brain tissue from the cyanide group. Finally, there was no change in acyl-coenzyme A thioesters between the two groups. CONCLUSIONS The key finding demonstrates mitochondrial dysfunction in brain tissue that corresponds with a decrease in mitochondrial function, ATP concentrations, and an elevated LPR indicating brain dysfunction at a sub-lethal dose of cyanide.
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Affiliation(s)
- Oladunni Alomaja
- Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Frances S Shofer
- Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - John C Greenwood
- Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Sarah Piel
- The Children's Hospital of Philadelphia , The Resuscitation Science Center, Philadelphia, PA, 19104, USA
| | - Carly Clayman
- The Children's Hospital of Philadelphia , The Resuscitation Science Center, Philadelphia, PA, 19104, USA
| | - Clementina Mesaros
- Department of Pharmacology, Perelman School of Medicine,, University of Pennsylvania,, Philadelphia, PA, 19104, USA
| | - Shih-Han Kao
- The Children's Hospital of Philadelphia , The Resuscitation Science Center, Philadelphia, PA, 19104, USA
| | - Samuel S Shin
- Department of Neurology, Perelman School of Medicine, University of Pennsylvania, PA, 19104, Philadelphia, USA
| | - Johannes K Ehinger
- Mitochondrial Medicine, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
- Otorhinolaryngology, Head and Neck Surgery, Department of Clinical Sciences Lund, Lund University, Skåne University Hospital, Lund, Sweden
| | - Todd J Kilbaugh
- The Children's Hospital of Philadelphia , The Resuscitation Science Center, Philadelphia, PA, 19104, USA
| | - David H Jang
- Department of Emergency Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA.
- The Children's Hospital of Philadelphia , The Resuscitation Science Center, Philadelphia, PA, 19104, USA.
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Gomez MA, Berkoff KC, Gill BK, Iavarone AT, Lieberman SE, Ma JM, Schultink A, Karavolias NG, Wyman SK, Chauhan RD, Taylor NJ, Staskawicz BJ, Cho MJ, Rokhsar DS, Lyons JB. CRISPR-Cas9-mediated knockout of CYP79D1 and CYP79D2 in cassava attenuates toxic cyanogen production. FRONTIERS IN PLANT SCIENCE 2023; 13:1079254. [PMID: 37007603 PMCID: PMC10064795 DOI: 10.3389/fpls.2022.1079254] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Accepted: 12/21/2022] [Indexed: 05/31/2023]
Abstract
Cassava (Manihot esculenta) is a starchy root crop that supports over a billion people in tropical and subtropical regions of the world. This staple, however, produces the neurotoxin cyanide and requires processing for safe consumption. Excessive consumption of insufficiently processed cassava, in combination with protein-poor diets, can have neurodegenerative impacts. This problem is further exacerbated by drought conditions which increase this toxin in the plant. To reduce cyanide levels in cassava, we used CRISPR-mediated mutagenesis to disrupt the cytochrome P450 genes CYP79D1 and CYP79D2 whose protein products catalyze the first step in cyanogenic glucoside biosynthesis. Knockout of both genes eliminated cyanide in leaves and storage roots of cassava accession 60444; the West African, farmer-preferred cultivar TME 419; and the improved variety TMS 91/02324. Although knockout of CYP79D2 alone resulted in significant reduction of cyanide, mutagenesis of CYP79D1 did not, indicating these paralogs have diverged in their function. The congruence of results across accessions indicates that our approach could readily be extended to other preferred or improved cultivars. This work demonstrates cassava genome editing for enhanced food safety and reduced processing burden, against the backdrop of a changing climate.
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Affiliation(s)
- Michael A. Gomez
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
| | - Kodiak C. Berkoff
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
- Department of Molecular & Cell Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Baljeet K. Gill
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
| | - Anthony T. Iavarone
- California Institute for Quantitative Biosciences (QB3), University of California, Berkeley, Berkeley, CA, United States
| | - Samantha E. Lieberman
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
- Department of Plant & Microbial Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Jessica M. Ma
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
- Department of Plant & Microbial Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Alex Schultink
- Department of Plant & Microbial Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Nicholas G. Karavolias
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
- Department of Plant & Microbial Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Stacia K. Wyman
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
| | | | - Nigel J. Taylor
- Donald Danforth Plant Science Center, St. Louis, MO, United States
| | - Brian J. Staskawicz
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
- Department of Plant & Microbial Biology, University of California, Berkeley, Berkeley, CA, United States
| | - Myeong-Je Cho
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
| | - Daniel S. Rokhsar
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
- Department of Molecular & Cell Biology, University of California, Berkeley, Berkeley, CA, United States
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
- Molecular Genetics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
- Chan-Zuckerberg BioHub, San Francisco, CA, United States
| | - Jessica B. Lyons
- Innovative Genomics Institute, University of California, Berkeley, Berkeley, CA, United States
- Department of Molecular & Cell Biology, University of California, Berkeley, Berkeley, CA, United States
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6
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Gomase V, Jugade R, Doondani P, Deshmukh S, Saravanan D, Pandey S. Dual modifications of chitosan with PLK for amputation of cyanide ions: Equilibrium studies and optimization using RSM. Int J Biol Macromol 2022; 223:636-651. [PMID: 36370863 DOI: 10.1016/j.ijbiomac.2022.11.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 11/01/2022] [Accepted: 11/03/2022] [Indexed: 11/10/2022]
Abstract
The aim of the study is to characterize and hierarchically modify chitosan using partially lateritized khondalite (PLK) rock. PLK is a metamorphic rock rich in mineral oxides and is not commercialized thus, treated as a mining reject. Chitosan was sequentially altered to Chitosan-PLK (Ch-PLK) and Chitosan-PLK-Epichlorohydrin (Ch-PLK-ECH) and both the materials were characterized by FT-IR, SEM, EDX, XRD, XRF and BET surface area analysis. The adsorbents were used for removal of cyanide ions from aqueous solution using batch adsorption experiments. The experiments were performed varying operational parameters and were optimized using RSM. The conditions optimized by RSM were carried out, more than 90 % of CN- adsorption was observed. The isotherm and kinetics studies have shown that the adsorption process fitted well with Langmuir isotherm model and pseudo second order kinetics. Using Langmuir isotherm, the maximum adsorption capacities of Ch-PLK and Ch-PLK-ECH towards cyanide ions at 30 °C were found to be 23.98 mg g-1 and 65.27 mg g-1 respectively. Thermodynamic studies described that adsorption process was spontaneous, enthalpy-driven over entire temperature range. Column studies established that the adsorbents may be applicable to large volume of samples. The adsorbents were tested for regeneration for 5 adsorption-desorption cycles suggesting reusability of the materials.
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Affiliation(s)
- Vaishnavi Gomase
- Department of Chemistry, R.T.M. Nagpur University, Nagpur 440033, India
| | - Ravin Jugade
- Department of Chemistry, R.T.M. Nagpur University, Nagpur 440033, India.
| | - Priyanka Doondani
- Department of Chemistry, R.T.M. Nagpur University, Nagpur 440033, India
| | | | - D Saravanan
- Department of Chemistry, National College, Tiruchirappalli, Tamilnadu 620001, India
| | - Sadanand Pandey
- Department of Chemistry, College of Natural Science, Yeungnam University, 280 Daehak-Ro, Gyeongsan, Gyeongbuk 38541, Republic of Korea.
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Kocher K, Bhattacharya S, Bramble MS, Okitundu-Luwa D, Ngoyi DM, Tshala-Katumbay D, Vilain E. DNA methylation patterns associated with konzo in Sub-Saharan Africa. Clin Epigenetics 2022; 14:179. [PMID: 36536449 PMCID: PMC9764695 DOI: 10.1186/s13148-022-01372-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Accepted: 11/08/2022] [Indexed: 12/24/2022] Open
Abstract
Konzo, a disease characterized by sudden, irreversible spastic paraparesis, affecting up to 10% of the population in some regions of Sub-Saharan Africa during outbreaks, is strongly associated with dietary exposure to cyanogenic bitter cassava. The molecular mechanisms underlying the development of konzo remain largely unknown. Here, through an analysis of 16 individuals with konzo and matched healthy controls from the same outbreak zones, we identified 117 differentially methylated loci involved in numerous biological processes that may identify cyanogenic-sensitive regions of the genome, providing the first study of epigenomic alterations associated with a clinical phenotype of konzo.
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Affiliation(s)
- Kristen Kocher
- grid.253615.60000 0004 1936 9510Department of Genomics and Precision Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC 20037 USA ,grid.239560.b0000 0004 0482 1586Department of Genetic Medicine Research, Children’s Research Institute, Childrens National Hospital, Washington, DC 20010 USA
| | - Surajit Bhattacharya
- grid.239560.b0000 0004 0482 1586Department of Genetic Medicine Research, Children’s Research Institute, Childrens National Hospital, Washington, DC 20010 USA
| | - Matthew S. Bramble
- grid.253615.60000 0004 1936 9510Department of Genomics and Precision Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC 20037 USA ,grid.239560.b0000 0004 0482 1586Department of Genetic Medicine Research, Children’s Research Institute, Childrens National Hospital, Washington, DC 20010 USA
| | - Daniel Okitundu-Luwa
- grid.9783.50000 0000 9927 0991Department of Neurology, University of Kinshasa, Kinshasa, Democratic Republic of the Congo
| | - Dieudonne Mumba Ngoyi
- grid.452637.10000 0004 0580 7727National Institute of Biomedical Research, Kinshasa, Democratic Republic of the Congo
| | - Desire Tshala-Katumbay
- grid.9783.50000 0000 9927 0991Department of Neurology, University of Kinshasa, Kinshasa, Democratic Republic of the Congo ,grid.452637.10000 0004 0580 7727National Institute of Biomedical Research, Kinshasa, Democratic Republic of the Congo ,grid.5288.70000 0000 9758 5690Department of Neurology, School of Medicine, Oregon Health and Science University, Portland, OR 97239 USA
| | - Eric Vilain
- grid.253615.60000 0004 1936 9510Department of Genomics and Precision Medicine, The George Washington University School of Medicine and Health Sciences, Washington, DC 20037 USA ,grid.266093.80000 0001 0668 7243Institute for Clinical and Translational Science, University of California, Irvine, Irvine, CA 92697 USA
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8
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Bramble MS, Vashist N, Ko A, Priya S, Musasa C, Mathieu A, Spencer DA, Lupamba Kasendue M, Mamona Dilufwasayo P, Karume K, Nsibu J, Manya H, Uy MNA, Colwell B, Boivin M, Mayambu JPB, Okitundu D, Droit A, Mumba Ngoyi D, Blekhman R, Tshala-Katumbay D, Vilain E. The gut microbiome in konzo. Nat Commun 2021; 12:5371. [PMID: 34508085 PMCID: PMC8433213 DOI: 10.1038/s41467-021-25694-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 08/24/2021] [Indexed: 02/08/2023] Open
Abstract
Konzo, a distinct upper motor neuron disease associated with a cyanogenic diet and chronic malnutrition, predominately affects children and women of childbearing age in sub-Saharan Africa. While the exact biological mechanisms that cause this disease have largely remained elusive, host-genetics and environmental components such as the gut microbiome have been implicated. Using a large study population of 180 individuals from the Democratic Republic of the Congo, where konzo is most frequent, we investigate how the structure of the gut microbiome varied across geographical contexts, as well as provide the first insight into the gut flora of children affected with this debilitating disease using shotgun metagenomic sequencing. Our findings indicate that the gut microbiome structure is highly variable depending on region of sampling, but most interestingly, we identify unique enrichments of bacterial species and functional pathways that potentially modulate the susceptibility of konzo in prone regions of the Congo.
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Affiliation(s)
- Matthew S Bramble
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
| | - Neerja Vashist
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
- Department of Genomics and Precision Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC, USA
| | - Arthur Ko
- Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
| | - Sambhawa Priya
- Departments of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN, USA
| | - Céleste Musasa
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
| | - Alban Mathieu
- Computational Biology Laboratory, CHU de Québec - Université Laval Research Center, Québec City, QC, Canada
| | - D' Andre Spencer
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
| | | | - Patrick Mamona Dilufwasayo
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
- Institut National de Recherche Biomédicale (INRB), Kinshasa, DR, Congo
| | - Kevin Karume
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
- Institut National de Recherche Biomédicale (INRB), Kinshasa, DR, Congo
| | - Joanna Nsibu
- Institut National de Recherche Biomédicale (INRB), Kinshasa, DR, Congo
| | - Hans Manya
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
- Institut National de Recherche Biomédicale (INRB), Kinshasa, DR, Congo
| | - Mary N A Uy
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA
- College of Medicine, University of the Philippines, Manila, Manila, Philippines
| | - Brian Colwell
- School of Public Health, Texas A&M University, College Station, TX, USA
| | - Michael Boivin
- Department of Psychiatry and Neurology & Ophthalmology, Michigan State University, East Lansing, MI, USA
| | - J P Banae Mayambu
- Ministry of Health National Program on Nutrition (PRONANUT), Kinshasa, DR, Congo
| | - Daniel Okitundu
- Centre Neuro-Psychopathologique (CNPP), University of Kinshasa, Kinshasa, Congo
| | - Arnaud Droit
- Computational Biology Laboratory, CHU de Québec - Université Laval Research Center, Québec City, QC, Canada
| | - Dieudonné Mumba Ngoyi
- Institut National de Recherche Biomédicale (INRB), Kinshasa, DR, Congo
- Department of Tropical Medicine, University of Kinshasa, Kinshasa, DR, Congo
| | - Ran Blekhman
- Departments of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN, USA
| | - Desire Tshala-Katumbay
- Institut National de Recherche Biomédicale (INRB), Kinshasa, DR, Congo.
- Department of Neurology and School of Public Health, Oregon Health & Science University, Portland, OR, USA.
| | - Eric Vilain
- Center for Genetic Medicine Research, Children's Research Institute, Children's National Hospital, Washington, DC, USA.
- Department of Genomics and Precision Medicine, George Washington University School of Medicine and Health Sciences, Washington, DC, USA.
- International Research Laboratory of Epigenetics, Data, Politics, Centre National de la Recherche Scientifique, Washington, DC, USA.
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9
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Monteiro T, Coelho AR, Moreira M, Viana AS, Almeida MG. Interfacing the enzyme multiheme cytochrome c nitrite reductase with pencil lead electrodes: Towards a disposable biosensor for cyanide surveillance in the environment. Biosens Bioelectron 2021; 191:113438. [PMID: 34171736 DOI: 10.1016/j.bios.2021.113438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/08/2021] [Accepted: 06/10/2021] [Indexed: 10/21/2022]
Abstract
The present study reports a novel voltammetric biosensor for cyanide based on its inhibitory effect on cytochrome c nitrite reductase (ccNiR). Interestingly, the earlier development of a point-of-care test for nitrite based on the direct electrochemistry of ccNiR has shown that the cyanide inhibition depends on the type of carbon material employed as transducer (Monteiro et al., 2019). In this work, commercial graphite pencil leads were employed in the construction of both working and pseudo-reference electrodes, with ccNiR being simply drop casted onto the former. In this way, we produced a functional and fully integrated voltammetric biosensor for nitrite quantification that also allows to observe a decrease in the catalytic current due to cyanide addition. Under turnover conditions, the biosensor showed a linear response with the logarithm of cyanide concentration in the 5-76 μM (cyclic voltammetry) and 1-40 μM (square-wave voltammetry) ranges, with a sensitivity of 20-25% ln [cyanide μM]-1 and a detection limit of 0.86-4.4 μM. The application of the pencil lead as a putative pseudo-reference was very promising, since the potentials profile matched those observed with a true reference electrode (Ag/AgCl). Overall, the direct electron transfer between ccNiR and a pencil lead electrode was demonstrated for the first time, with cyanide-induced inhibition being easily monitored, paving the way for the employment of these low-cost bioelectrodes as cyanide probes for on-site surveillance of aquatic environments.
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Affiliation(s)
- Tiago Monteiro
- UCIBIO, REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Monte de Caparica, 2829-516, Portugal
| | - Ana Rita Coelho
- Departamento Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Miguel Moreira
- UCIBIO, REQUIMTE, Faculdade de Ciências e Tecnologia, Universidade NOVA de Lisboa, Monte de Caparica, 2829-516, Portugal
| | - Ana S Viana
- Centro de Química Estrutural, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisboa, Portugal
| | - Maria Gabriela Almeida
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Campus Universitário, Quinta da Granja, Caparica, 2829-511, Portugal.
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10
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Baguma M, Nzabara F, Maheshe Balemba G, Malembaka EB, Migabo C, Mudumbi G, Bito V, Cliff J, Rigo JM, Chabwine JN. Konzo risk factors, determinants and etiopathogenesis: What is new? A systematic review. Neurotoxicology 2021; 85:54-67. [PMID: 33964344 DOI: 10.1016/j.neuro.2021.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 12/13/2022]
Abstract
Konzo is a toxico-nutritional upper motor neuron disease causing a spastic paraparesis in schoolchildren and childbearing women in some African countries. Almost a century since the first description of konzo, its underlying etiopathogenic mechanisms and causative agent remain unknown. This paper aims at refreshing the current knowledge of konzo determinants and pathogenesis in order to enlighten potential new research and management perspectives. Literature research was performed in PubMed and Web of Science databases according to the PRISMA methodology. Available data show that cassava-derived cyanide poisoning and protein malnutrition constitute two well-documented risk factors of konzo. However, observational studies have failed to demonstrate the causal relationship between konzo and cyanide poisoning. Thiocyanate, the current marker of choice of cyanide exposure, may underestimate the actual level of cyanide poisoning in konzo patients as a larger amount of cyanide is detoxified via other unusual pathways in the context of protein malnutrition characterizing these patients. Furthermore, the appearance of konzo may be the consequence of the interplay of several factors including cyanide metabolites, nutritional deficiencies, psycho-emotional and geo-environmental factors, resulting in pathophysiologic phenomena such as excitotoxicity or oxidative stress, responsible for neuronal damage that takes place at sparse cellular and/or subcellular levels.
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Affiliation(s)
- Marius Baguma
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; Biomedical Research Institute (BIOMED), UHasselt - Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium.
| | - Fabrice Nzabara
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; École Régionale de Santé Publique (ERSP), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Ghislain Maheshe Balemba
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Espoir Bwenge Malembaka
- École Régionale de Santé Publique (ERSP), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Christiane Migabo
- Faculty of Agronomy, Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; Department of Geography and Environmental Studies, College of Social Sciences and Humanities, Jimma University, Jimma, Ethiopia
| | - Germain Mudumbi
- Department of Pediatrics, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo
| | - Virginie Bito
- Biomedical Research Institute (BIOMED), UHasselt - Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium
| | - Julie Cliff
- Faculty of Medicine, Department of Community Health, Eduardo Mondlane University, Maputo, Mozambique
| | - Jean-Michel Rigo
- Biomedical Research Institute (BIOMED), UHasselt - Hasselt University, Agoralaan, 3590 Diepenbeek, Belgium
| | - Joëlle Nsimire Chabwine
- Department of Internal Medicine, Hôpital Provincial Général de Référence de Bukavu (HPGRB), Université Catholique de Bukavu (UCB), Bukavu, Democratic Republic of the Congo; Department of Neuroscience and Movement Science, Faculty of Science and Medicine, University of Fribourg, Fribourg, Switzerland
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11
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Pecze L, Randi EB, Szabo C. Meta-analysis of metabolites involved in bioenergetic pathways reveals a pseudohypoxic state in Down syndrome. Mol Med 2020; 26:102. [PMID: 33167881 PMCID: PMC7653803 DOI: 10.1186/s10020-020-00225-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 10/12/2020] [Indexed: 12/14/2022] Open
Abstract
Clinical observations and preclinical studies both suggest that Down syndrome (DS) may be associated with significant metabolic and bioenergetic alterations. However, the relevant scientific literature has not yet been systematically reviewed. The aim of the current study was to conduct a meta-analysis of metabolites involved in bioenergetics pathways in DS to conclusively determine the difference between DS and control subjects. We discuss these findings and their potential relevance in the context of pathogenesis and experimental therapy of DS. Articles published before July 1, 2020, were identified by using the search terms “Down syndrome” and “metabolite name” or “trisomy 21” and “metabolite name”. Moreover, DS-related metabolomics studies and bioenergetics literature were also reviewed. 41 published reports and associated databases were identified, from which the descriptive information and the relevant metabolomic parameters were extracted and analyzed. Mixed effect model revealed the following changes in DS: significantly decreased ATP, CoQ10, homocysteine, serine, arginine and tyrosine; slightly decreased ADP; significantly increased uric acid, succinate, lactate and cysteine; slightly increased phosphate, pyruvate and citrate. However, the concentrations of AMP, 2,3-diphosphoglycerate, glucose, and glutamine were comparable in the DS vs. control populations. We conclude that cells of subjects with DS are in a pseudo-hypoxic state: the cellular metabolic and bio-energetic mechanisms exhibit pathophysiological alterations that resemble the cellular responses associated with hypoxia, even though the supply of the cells with oxygen is not disrupted. This fundamental alteration may be, at least in part, responsible for a variety of functional deficits associated with DS, including reduced exercise difference, impaired neurocognitive status and neurodegeneration.
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Affiliation(s)
- Laszlo Pecze
- Chair of Pharmacology, Section of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Elisa B Randi
- Chair of Pharmacology, Section of Medicine, University of Fribourg, Fribourg, Switzerland
| | - Csaba Szabo
- Chair of Pharmacology, Section of Medicine, University of Fribourg, Fribourg, Switzerland.
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12
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Janecek J, Kushlaf H. Toxin-Induced Channelopathies, Neuromuscular Junction Disorders, and Myopathy. Neurol Clin 2020; 38:765-780. [PMID: 33040860 DOI: 10.1016/j.ncl.2020.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Channelopathies, neuromuscular junction disorders, and myopathies represent multiple mechanisms by which toxins can affect the peripheral nervous system. These toxins include ciguatoxin, tetrodotoxin, botulinum toxin, metabolic poisons, venomous snake bites, and several medications. These toxins are important to be aware of because they can lead to serious symptoms, disability, or even death, and many can be treated if recognized ear.
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Affiliation(s)
- Jacqueline Janecek
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Hani Kushlaf
- Department of Neurology and Rehabilitation Medicine, University of Cincinnati, 260 Stetson Street Suite 2300, Cincinnati, OH 45219, USA; Department of Pathology and Laboratory Medicine, University of Cincinnati, 234 Goodman Street, LMB, Suite 110, Cincinnati, OH 45219, USA.
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13
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Hirota K. Basic Biology of Hypoxic Responses Mediated by the Transcription Factor HIFs and its Implication for Medicine. Biomedicines 2020; 8:biomedicines8020032. [PMID: 32069878 PMCID: PMC7168341 DOI: 10.3390/biomedicines8020032] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 02/08/2020] [Accepted: 02/12/2020] [Indexed: 12/19/2022] Open
Abstract
Oxygen (O2) is essential for human life. Molecular oxygen is vital for the production of adenosine triphosphate (ATP) in human cells. O2 deficiency leads to a reduction in the energy levels that are required to maintain biological functions. O2 acts as the final acceptor of electrons during oxidative phosphorylation, a series of ATP synthesis reactions that occur in conjunction with the electron transport system in mitochondria. Persistent O2 deficiency may cause death due to malfunctioning biological processes. The above account summarizes the classic view of oxygen. However, this classic view has been reviewed over the last two decades. Although O2 is essential for life, higher organisms such as mammals are unable to biosynthesize molecular O2 in the body. Because the multiple organs of higher organisms are constantly exposed to the risk of “O2 deficiency,” living organisms have evolved elaborate strategies to respond to hypoxia. In this review, I will describe the system that governs oxygen homeostasis in the living body from the point-of-view of the transcription factor hypoxia-inducible factor (HIF).
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Affiliation(s)
- Kiichi Hirota
- Department of Human Stress Response Science, Institute of Biomedical Science, Kansai Medical University, Hirakata, Osaka 573-1010, Japan
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14
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Rosas-Jarquín CDJ, Rivadeneyra-Domínguez E, León-Chávez BA, Nadella R, Sánchez-García ADC, Rembao-Bojórquez D, Rodríguez-Landa JF, Hernandez-Baltazar D. Chronic consumption of cassava juice induces cellular stress in rat substantia nigra. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2020; 23:93-101. [PMID: 32405352 PMCID: PMC7206837 DOI: 10.22038/ijbms.2019.38460.9131] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Accepted: 07/31/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Cassava (Manihot esculenta Crantz) contains cyanogenic glycosides (linamarin and lotaustralin) that have been associated with neurological disorders in humans and rats. In basal ganglia, the dopaminergic neurons of substantia nigra pars compacta (SNpc) show high cytotoxic susceptibility; therefore, the chronic consumption of cassava (CCC) could induce neurodegeneration in SNpc. In this study we examine the impact of CCC on the integrity of the nigrostriatal system, including apoptosis and microgliosis. MATERIALS AND METHODS Male Wistar rats were administered cassava juice daily (3.57 g/kg and 28.56 g/kg, per os) or linamarin (0.15 mg/ml, IP), and its effects were evaluated in rota-rod and swim tests at days 7, 14, 21, 28, and 35 of administration. In SNpc, oxidative/nitrosative stress was determined by malondialdehyde/4-hydroxyalkenals (MDA-4-HAD) and nitrite contents. Tyrosine hydroxylase immunoreactivity (TH-IR) was evaluated in SNpc, neostriatum (NE), and nucleus accumbens (NA). Apoptosis and microgliosis were determined by active-caspase-3 (C3) and CD11b/c (OX42) expression in the medial region of SNpc. RESULTS Chronic administration of cassava juice, or linamarin, increased motor impairment. The rats that received 28.56 g/kg cassava showed increased MDA-4-HAD content in SNpc and nitrite levels in NE with respect to controls. Significant loss of TH-IR in SNpc, NE, and NA was not found. The 28.56 g/kg cassava administration produced dopaminergic atrophy and microgliosis, whereas linamarin induced hypertrophy and C3-related apoptosis in SNpc. CONCLUSION CCC induces cellular stress on dopaminergic neurons, which could contribute to motor impairment in the rat.
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Affiliation(s)
| | | | | | - Rasajna Nadella
- IIIT Srikakulam, Rajiv Gandhi University of Knowledge Technologies (RGUKT); International collaboration ID: 1840; India
| | | | - Daniel Rembao-Bojórquez
- Instituto Nacional de Neurología y Neurocirugía “Manuel Velasco Suárez”. Ciudad de México. Mexico
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15
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Rivadeneyra-Domínguez E, Rodríguez-Landa JF. Preclinical and clinical research on the toxic and neurological effects of cassava (Manihot esculenta Crantz) consumption. Metab Brain Dis 2020; 35:65-74. [PMID: 31802307 DOI: 10.1007/s11011-019-00522-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/21/2019] [Indexed: 10/25/2022]
Abstract
Cassava (Manihot esculenta Crantz) is a tropical plant that is used as fresh food, processed food, or raw material for the preparation of flours with high nutritional value. However, cassava contains cyanogenic glycosides, such as linamarin and lotaustralin, that can trigger severe toxic effects and some neurological disorders, including motor impairment, cognitive deterioration, and symptoms that characterize tropical ataxic neuropathy and spastic epidemic paraparesis (Konzo). These alterations that are associated with the consumption of cassava or its derivatives have been reported in both humans and experimental animals. The present review discusses and integrates preclinical and clinical evidence that indicates the toxic and neurological effects of cassava and its derivatives by affecting metabolic processes and the central nervous system. An exhaustive review of the literature was performed using specialized databases that focused on the toxic and neurological effects of the consumption of cassava and its derivatives. We sought to provide structured information that will contribute to understanding the undesirable effects of some foods and preventing health problems in vulnerable populations who consume these vegetables. Cassava contains cyanogenic glycosides that contribute to the development of neurological disorders when they are ingested inappropriately or for prolonged periods of time. Such high consumption can affect neurochemical and neurophysiological processes in particular brain structures and affect peripheral metabolic processes that impact wellness. Although some vegetables have high nutritional value and ameliorate food deficits in vulnerable populations, they can also predispose individuals to the development of neurological diseases.
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Affiliation(s)
- E Rivadeneyra-Domínguez
- Facultad de Química Farmacéutica Biológica, Universidad Veracruzana, Xalapa, 91000, Veracruz, Mexico.
| | - J F Rodríguez-Landa
- Facultad de Química Farmacéutica Biológica, Universidad Veracruzana, Xalapa, 91000, Veracruz, Mexico
- Laboratorio de Neurofarmacología, Instituto de Neuroetología, Universidad Veracruzana, Xalapa, 91190, Veracruz, Mexico
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16
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Bateman JR, Taber KH, Hurley RA. Complex Metal Ions: Neuropsychiatric and Imaging Features. J Neuropsychiatry Clin Neurosci 2020; 32:A4-321. [PMID: 33118851 PMCID: PMC9808918 DOI: 10.1176/appi.neuropsych.20080223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- James R. Bateman
- Veterans Affairs Mid Atlantic Mental Illness Research, Education, and Clinical Center, and the Research and Academic Affairs Service Line at the W.G. Hefner Veterans Affairs Medical Center in Salisbury, North Carolina; Departments of Neurology and Psychiatry at Wake Forest School of Medicine in Winston-Salem, North Carolina
| | - Katherine H. Taber
- Veterans Affairs Mid Atlantic Mental Illness Research, Education, and Clinical Center, and the Research and Academic Affairs Service Line at the W.G. Hefner Veterans Affairs Medical Center in Salisbury, North Carolina; Division of Biomedical Sciences at the Via College of Osteopathic Medicine in Blacksburg, Virginia, and the Department of Physical Medicine and Rehabilitation at Baylor College of Medicine in Houston
| | - Robin A. Hurley
- Veterans Affairs Mid Atlantic Mental Illness Research, Education, and Clinical Center, and the Research and Academic Affairs Service Line at the W.G. Hefner Veterans Affairs Medical Center in Salisbury, North Carolina; Departments of Psychiatry and Radiology at Wake Forest School of Medicine in Winston-Salem, North Carolina, and the Menninger Department of Psychiatry and Behavioral Sciences at Baylor College of Medicine in Houston, Texas
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17
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Alitubeera PH, Eyu P, Kwesiga B, Ario AR, Zhu BP. Outbreak of Cyanide Poisoning Caused by Consumption of Cassava Flour - Kasese District, Uganda, September 2017. MMWR. MORBIDITY AND MORTALITY WEEKLY REPORT 2019; 68:308-311. [PMID: 30946738 PMCID: PMC6611475 DOI: 10.15585/mmwr.mm6813a3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Ngwa JS, Fungwe TV, Ntekim O, Allard JS, Johnson SM, Castor C, Graham L, Nadarajah S, Gillum RF, Obisesan TO. Associations of Pulse and Blood Pressure with Hippocampal Volume by APOE and Cognitive Phenotype: The Alzheimer's Disease Neuroimaging Initiative (ADNI). Dement Geriatr Cogn Disord 2018; 45:66-78. [PMID: 29694964 PMCID: PMC6143389 DOI: 10.1159/000486955] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 01/17/2018] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND It is increasingly evident that high blood pressure can promote reduction in global and regional brain volumes. While these effects may preferentially affect the hippocampus, reports are inconsistent. METHODS Using data from the Alzheimer's Disease Neuroimaging Initiative (ADNI), we examined the relationships of hippocampal volume to pulse pressure (PPR) and systolic (SBP) and diastolic (DBP) blood pressure according to apolipoprotein (APOE) ɛ4 positivity and cognitive status. The ADNI data included 1,308 participants: Alzheimer disease (AD = 237), late mild cognitive impairment (LMCI = 454), early mild cognitive impairment (EMCI = 254), and cognitively normal (CN = 365), with up to 24 months of follow-up. RESULTS Higher quartiles of PPR were significantly associated with lower hippocampal volumes (Q1 vs. Q4, p = 0.034) in the CN and AD groups, but with increasing hippocampal volume (Q1, p = 0.008; Q2, p = 0.020; Q3, p = 0.017; Q4 = reference) in the MCI groups. In adjusted stratified analyses among non-APOE ɛ4 carriers, the effects in the CN (Q1 vs. Q4, p = 0.006) and EMCI groups (Q1, p = 0.002; Q2, p = 0.013; Q3, p = 0.002; Q4 = reference) remained statistically significant. Also, higher DBP was significantly associated with higher hippocampal volume (p = 0.002) while higher SBP was significantly associated with decreasing hippocampal volume in the EMCI group (p = 0.015). CONCLUSION Changes in PPR, SBP, and DBP differentially influenced hippocampal volumes depending on the cognitive and APOE genotypic categories.
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Affiliation(s)
- Julius S. Ngwa
- Division of Cardiovascular Medicine, Department of Medicine, Howard University College of Medicine, Washington, DC, USA
| | - Thomas V. Fungwe
- Department of Nutritional Sciences, School of Nursing and Allied Health Sciences, and Department of Medicine, Howard University College of Medicine, Washington, DC, USA
| | - Oyonumo Ntekim
- Department of Nutritional Sciences, School of Nursing and Allied Health Sciences, and Department of Medicine, Howard University College of Medicine, Washington, DC, USA
| | - Joanne S. Allard
- Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA
| | - Sheree M. Johnson
- Department of Physiology and Biophysics, Howard University College of Medicine, Washington, DC, USA
| | - Chimene Castor
- Department of Nutritional Sciences, School of Nursing and Allied Health Sciences, and Department of Medicine, Howard University College of Medicine, Washington, DC, USA
| | - Lennox Graham
- Department of Health Education, School of Nursing and Allied Health Sciences, and Department of Medicine, Howard University College of Medicine, Washington, DC, USA
| | - Sheeba Nadarajah
- Division of Nursing, School of Nursing and Allied Health Sciences, and Department of Medicine, Howard University College of Medicine, Washington, DC, USA
| | - Richard F. Gillum
- Division of Geriatrics, Department of Medicine and Clinical/Translational Science Program, Howard University College of Medicine/ Hospital, Washington, DC, USA
| | - Thomas O. Obisesan
- Division of Geriatrics, Department of Medicine and Clinical/Translational Science Program, Howard University College of Medicine/ Hospital, Washington, DC, USA
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Jaisson S, Pietrement C, Gillery P. Protein Carbamylation: Chemistry, Pathophysiological Involvement, and Biomarkers. Adv Clin Chem 2018; 84:1-38. [PMID: 29478512 DOI: 10.1016/bs.acc.2017.12.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Protein carbamylation refers to a nonenzymatic modification, which consists in the binding of isocyanic acid on protein functional groups. This reaction is responsible for the alteration in structural and functional properties of proteins, which participate in their molecular aging. Protein molecular aging is now considered a molecular substratum for the development of chronic and inflammatory diseases, including atherosclerosis, chronic kidney disease, or rheumatoid arthritis. As a consequence, carbamylation-derived products have been proposed as interesting biomarkers in various pathological contexts and appropriate analytical methods have been developed for their quantification in biological fluids. The purpose of this review is (i) to describe the biochemical bases of the carbamylation reaction, (ii) to explain how it contributes to protein molecular aging, (iii) to provide evidence of its involvement in aging and chronic diseases, and (iv) to list the available biomarkers of carbamylation process and the related analytical methods.
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20
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Boivin MJ, Okitundu D, Makila-Mabe B, Sombo MT, Mumba D, Sikorskii A, Mayambu B, Tshala-Katumbay D. Cognitive and motor performance in Congolese children with konzo during 4 years of follow-up: a longitudinal analysis. Lancet Glob Health 2017; 5:e936-e947. [PMID: 28807191 PMCID: PMC5594926 DOI: 10.1016/s2214-109x(17)30267-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2017] [Revised: 06/13/2017] [Accepted: 06/26/2017] [Indexed: 11/23/2022]
Abstract
BACKGROUND Konzo is an irreversible upper-motor neuron disorder affecting children dependent on bitter cassava for food. The neurocognitive ability of children with konzo over time has yet to be fully documented. METHODS We did a longitudinal study in a konzo outbreak zone continuously affected by konzo since 1990, in the district of Kahemba, southern Bandundu Province, Congo. We enrolled children with a record of neurological diagnosis of konzo in Kahemba town. For all study children with konzo enrolled in the final sample for the baseline assessment, a neurological exam was done by neurologists to confirm konzo diagnosis using the 1996 WHO criteria at 2 years and 4 years. In the initial baseline sample for each child with konzo, we attempted to get consent from a comparison child without konzo (1996 WHO criteria) within 2 years of age, from a neighbouring household who met inclusion criteria. The neuropsychological assessments were the Kaufman Assessment Battery for Children, second edition (KABC-II), and the Bruininks-Oseretsky Test of Motor Proficiency, second edition (BOT-2). FINDINGS Data collection occurred between Oct 12, 2011, and Aug 14, 2015, in the town of Kahemba. 123 children from the Congo with konzo and 87 presumably healthy children without konzo from neighbouring households were enrolled. The planned assessments were completed by 76 children with konzo and 82 children without konzo at 2-year follow-up, and by 55 children with konzo and 33 children without konzo at 4-year follow-up. Boys with konzo did worse than those without konzo on the KABC-II Learning (p=0·0424) and on the Mental Processing Index (MPI; p=0·0111) assessments at 2-year follow-up, but girls did not. These differences observed in boys might have been caused by stunting. At 4-year follow-up, the difference in KABC-II MPI score between boys or girls with or without konzo was not significant. Both boys and girls with konzo had lower scores on BOT-2 than children without konzo at both follow-up times (p<0·0001). These differences were not attenuated when controlling for physical growth. Boys with and without konzo declined on BOT-2 fine motor proficiency at 2-year follow-up (boys with konzo p=0·0076; boys without konzo p=0·0224) and KABC-II MPI performance at 2-year follow-up and 4-year follow-up (2 years: boys with konzo p<0·0001, boys without konzo p=0·0213; 4 years: boys with konzo p=0·0256, boys without konzo p=0·10), but that was not the case for the girls with scores remaining stable regardless of konzo status. For boys, increases in urinary thiocyanate concentration was significantly associated with reductions in BOT-2 motor proficiency (p=0·0321), but was not significantly associated in girls and urinary thiocyanate concentration was not associated with KABC-II MPI score for either boys or girls. INTERPRETATION Motor and cognitive performance continues to be significantly impaired in boys with konzo at 2-year follow-up compared with boys without konzo. Because these impairments are associated in part with exposure to poorly processed cassava as measured by urinary thiocyanate, interventions are urgently needed to ensure improved processing of cassava to detoxify this food source. FUNDING US National Institutes of Health.
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Affiliation(s)
- Michael J Boivin
- Department of Psychiatry and Neurology & Ophthalmology, Michigan State University, East Lansing, MI, USA.
| | - Daniel Okitundu
- Centre NeuroPsychopathologique (CNPP), University of Kinshasa, Kinshasa, Congo
| | - Bumoko Makila-Mabe
- Centre NeuroPsychopathologique (CNPP), University of Kinshasa, Kinshasa, Congo
| | - Marie-Therese Sombo
- Centre NeuroPsychopathologique (CNPP), University of Kinshasa, Kinshasa, Congo
| | - Dieudonne Mumba
- Department of Tropical Medicine, University of Kinshasa, Kinshasa, Congo; National Institute for Biomedical Research (INRB), Kinshasa, Congo
| | - Alla Sikorskii
- Department of Psychiatry and Department of Statistics and Probability, Michigan State University, East Lansing, MI, USA
| | - Banea Mayambu
- Ministry of Health National Program on Nutrition (PRONANUT), Kinshasa, Congo
| | - Desire Tshala-Katumbay
- Centre NeuroPsychopathologique (CNPP), University of Kinshasa, Kinshasa, Congo; National Institute for Biomedical Research (INRB), Kinshasa, Congo; Department of Neurology and School of Public Health, Oregon Health & Science University, Portland, OR, USA
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