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Mamedov MD, Milanovsky GE, Malferrari M, Vitukhnovskaya LA, Francia F, Semenov AY, Venturoli G. Trehalose matrix effects on electron transfer in Mn-depleted protein-pigment complexes of Photosystem II. Biochim Biophys Acta Bioenerg 2021; 1862:148413. [PMID: 33716033 DOI: 10.1016/j.bbabio.2021.148413] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/15/2021] [Accepted: 03/07/2021] [Indexed: 11/18/2022]
Abstract
The kinetics of flash-induced re-reduction of the Photosystem II (PS II) primary electron donor P680 was studied in solution and in trehalose glassy matrices at different relative humidity. In solution, and in the re-dissolved glass, kinetics were dominated by two fast components with lifetimes in the range of 2-7 μs, which accounted for >85% of the decay. These components were ascribed to the direct electron transfer from the redox-active tyrosine YZ to P680+. The minor slower components were due to charge recombination between the primary plastoquinone acceptor QA- and P680+. Incorporation of the PS II complex into the trehalose glassy matrix and its successive dehydration caused a progressive increase in the lifetime of all kinetic phases, accompanied by an increase of the amplitudes of the slower phases at the expense of the faster phases. At 63% relative humidity the fast components contribution dropped to ~50%. A further dehydration of the trehalose glass did not change the lifetimes and contribution of the kinetic components. This effect was ascribed to the decrease of conformational mobility of the protein domain between YZ and P680, which resulted in the inhibition of YZ → P680+ electron transfer in about half of the PS II population, wherein the recombination between QA- and P680+ occurred. The data indicate that PS II binds a larger number of water molecules as compared to PS I complexes. We conclude that our data disprove the "water replacement" hypothesis of trehalose matrix biopreservation.
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Affiliation(s)
- Mahir D Mamedov
- A.N. Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Leninskye gory, 1, b.40, Russia
| | - Georgy E Milanovsky
- A.N. Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Leninskye gory, 1, b.40, Russia
| | - Marco Malferrari
- Laboratory of Biochemistry and Molecular Biophysics, Department of Pharmacy and Biotechnology, FaBiT, University of Bologna, Bologna, Via Irnerio, 42, Italy
| | - Liya A Vitukhnovskaya
- A.N. Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Leninskye gory, 1, b.40, Russia; N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Kosygina Street, 4, b.1, Russia
| | - Francesco Francia
- Laboratory of Biochemistry and Molecular Biophysics, Department of Pharmacy and Biotechnology, FaBiT, University of Bologna, Bologna, Via Irnerio, 42, Italy
| | - Alexey Yu Semenov
- A.N. Belozersky Institute of Physical-Chemical Biology, Lomonosov Moscow State University, 119992 Moscow, Leninskye gory, 1, b.40, Russia; N.N. Semenov Federal Research Center for Chemical Physics, Russian Academy of Sciences, Moscow, 119991, Kosygina Street, 4, b.1, Russia.
| | - Giovanni Venturoli
- Laboratory of Biochemistry and Molecular Biophysics, Department of Pharmacy and Biotechnology, FaBiT, University of Bologna, Bologna, Via Irnerio, 42, Italy; Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, CNISM, c/o Department of Physics and Astronomy "Augusto Righi", DIFA, University of Bologna, Bologna, Via Irnerio, 46, Italy.
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Mitchell EJ, Frisbie SH, Roudeau S, Carmona A, Ortega R. Estimating daily intakes of manganese due to breast milk, infant formulas, or young child nutritional beverages in the United States and France: Comparison to sufficiency and toxicity thresholds. J Trace Elem Med Biol 2020; 62:126607. [PMID: 32683229 DOI: 10.1016/j.jtemb.2020.126607] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 06/16/2020] [Accepted: 06/30/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Although manganese (Mn) is an essential nutrient, recent research has revealed that excess Mn in early childhood may have adverse effects on neurodevelopment. METHODS We estimated daily total Mn intake due to breast milk at average body weights by reviewing reported concentrations of breast milk Mn and measurements of body weight and breast milk intake at 3 weeks, 4.25 months, 7 months, and 18 months. We compared these figures to the Mn content measured in 44 infant, follow-up, and toddler formulas purchased in the United States and France. We calculated Mn content of formula products made with ultra-trace elemental analysis grade water (0 μg Mn/L) and with water containing 250 μg Mn/L, a concentration which is relatively high but less than the World Health Organization Health-based value of 400 μg Mn/L or the United States Environmental Protection Agency Health Advisory of 350 μg Mn/L. RESULTS Estimated mean daily Mn intake from breast milk ranged from 1.2 μg Mn/kg/day (3 weeks) to 0.16 μg Mn/kg/day (18 months), with the highest intakes at the youngest age stage we considered, 3 weeks. Estimated daily Mn intake from formula products reconstituted with 0 μg Mn/L water ranged from 130 μg Mn/kg/day (3 weeks) to 4.8 μg Mn/kg/day (18 months) with the highest intakes at 3 weeks. Formula products provided 28-520 times greater than the mean daily intake of Mn from breast milk for the 4 age stages that we considered. Estimated daily Mn intake from formula products reconstituted with water containing 250 μg Mn/L ranged from 12 μg Mn/kg/day to 170 μg Mn/kg/day, which exceeds the United States Environmental Protection Agency Reference Dose of 140 μg Mn/kg/day for adults. CONCLUSIONS Mn deficiency is highly unlikely with exclusive breast milk or infant formula feeding, but established tolerable daily intake levels for Mn may be surpassed by some of these products when following labeled instructions.
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Affiliation(s)
- Erika J Mitchell
- Better Life Laboratories, Inc., 293 George Road, East Calais, VT, USA.
| | - Seth H Frisbie
- Department of Chemistry and Biochemistry, Norwich University, Northfield, VT, USA.
| | - Stéphane Roudeau
- University of Bordeaux, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), UMR 5797, F-33170 Gradignan, France; Centre National de la Recherche Scientifique (CNRS), CENBG, UMR 5797, F-33170 Gradignan, France.
| | - Asuncion Carmona
- University of Bordeaux, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), UMR 5797, F-33170 Gradignan, France; Centre National de la Recherche Scientifique (CNRS), CENBG, UMR 5797, F-33170 Gradignan, France.
| | - Richard Ortega
- University of Bordeaux, Centre d'Etudes Nucléaires de Bordeaux Gradignan (CENBG), UMR 5797, F-33170 Gradignan, France; Centre National de la Recherche Scientifique (CNRS), CENBG, UMR 5797, F-33170 Gradignan, France.
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Winslow JW, Limesand KH, Zhao N. The Functions of ZIP8, ZIP14, and ZnT10 in the Regulation of Systemic Manganese Homeostasis. Int J Mol Sci 2020; 21:ijms21093304. [PMID: 32392784 PMCID: PMC7246657 DOI: 10.3390/ijms21093304] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Revised: 05/04/2020] [Accepted: 05/05/2020] [Indexed: 12/27/2022] Open
Abstract
As an essential nutrient, manganese is required for the regulation of numerous cellular processes, including cell growth, neuronal health, immune cell function, and antioxidant defense. However, excess manganese in the body is toxic and produces symptoms of neurological and behavioral defects, clinically known as manganism. Therefore, manganese balance needs to be tightly controlled. In the past eight years, mutations of genes encoding metal transporters ZIP8 (SLC39A8), ZIP14 (SLC39A14), and ZnT10 (SLC30A10) have been identified to cause dysregulated manganese homeostasis in humans, highlighting the critical roles of these genes in manganese metabolism. This review focuses on the most recent advances in the understanding of physiological functions of these three identified manganese transporters and summarizes the molecular mechanisms underlying how the loss of functions in these genes leads to impaired manganese homeostasis and human diseases.
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Vitukhnovskaya LA, Fedorenko EV, Mamedov MD. Electron Transfer on the Donor Side of Manganese-Depleted Photosystem 2. Biochemistry (Mosc) 2019; 84:1057-1064. [PMID: 31693465 DOI: 10.1134/s0006297919090086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/05/2019] [Accepted: 06/05/2019] [Indexed: 06/10/2023]
Abstract
After removal of manganese ions responsible for light-driven water oxidation, redox-active tyrosine YZ (tyrosine 161 of the D1 subunit) still remains the dominant electron donor to the photooxidized chlorophyll P680 (P680+) in the reaction center of photosystem 2 (PS2). Here, we investigated P680+ reduction by YZ under single-turnover flashes in Mn-depleted PS2 core complexes in the presence of weak acids and NH4Cl. Analysis of changes in the light-induced absorption at 830 nm (reflecting P680 redox transitions) at pH 6.0 showed that P680+ reduction is well approximated by two kinetic components with the characteristic times (τ) of ~7 and ~31 μs and relative contributions of ~54 and ~37%, respectively. In contrast to the very small effect of sodium formate (200 mM), addition of sodium acetate and NH4Cl increased the rate of electron transfer between YZ and P680+ approx. by a factor of 5. The suggestion that direct electron transfer from YZ to P680+ has a biphasic kinetics and reflects the presence of two different populations of PS2 centers was confirmed by the data obtained using direct electrometrical technique. It was demonstrated that the submillisecond two-phase kinetics of the additional electrogenic phase in the kinetics of photoelectric response due to the electron transfer between YZ and P680+ is significantly accelerated in the presence of acetate or ammonia. These results contribute to the understanding of the mechanism of interaction between the oxidized tyrosine YZ and exogenous substances (including synthetic manganese-containing compounds) capable of photooxidation of water molecule in the manganese-depleted PS2 complexes.
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Affiliation(s)
- L A Vitukhnovskaya
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia
- Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 119334, Russia
| | - E V Fedorenko
- Moscow Institute of Physics and Technology, Dolgoprudny, Moscow Region, 141701, Russia
| | - M D Mamedov
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119992, Russia.
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Cheng L, Zhang S, Yang L, Wang Y, Yu B, Zhang F. Comparative proteomics illustrates the complexity of Fe, Mn and Zn deficiency-responsive mechanisms of potato (Solanum tuberosum L.) plants in vitro. Planta 2019; 250:199-217. [PMID: 30976909 DOI: 10.1007/s00425-019-03163-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 04/05/2019] [Indexed: 05/05/2023]
Abstract
The present study is the first to integrate physiological and proteomic data providing information on Fe, Mn and Zn deficiency-responsive mechanisms of potato plants in vitro. Micronutrient deficiency is an important limiting factor for potato production that causes substantial tuber yield and quality losses. To under the underlying molecular mechanisms of potato in response to Fe, Mn and Zn deficiency, a comparative proteomic approach was applied. Leaf proteome change of in vitro-propagated potato plantlets subjected to a range of Fe-deficiency treatments (20, 10 and 0 μM Na-Fe-EDTA), Mn-deficiency treatments (1 and 0 μM MnCl2·4H2O) and Zn-deficiency treatment (0 μM ZnCl2) using two-dimensional gel electrophoresis was analyzed. Quantitative image analysis showed a total of 146, 55 and 42 protein spots under Fe, Mn and Zn deficiency with their abundance significantly altered (P < 0.05) more than twofold, respectively. By MALDI-TOF/TOF MS analyses, the differentially abundant proteins were found mainly involved in bioenergy and metabolism, photosynthesis, defence, redox homeostasis and protein biosynthesis/degradation under the metal deficiencies. Signaling, transport, cellular structure and transcription-related proteins were also identified. The hierarchical clustering results revealed that these proteins were involved in a dynamic network in response to Fe, Mn and Zn deficiency. All these metal deficiencies caused cellular metabolic remodeling to improve metal acquisition and distribution in potato plants. The reduced photosynthetic efficiency occurred under each metal deficiency, yet Fe-deficient plants showed a more severe damage of photosynthesis. More defence mechanisms were induced by Fe deficiency than Mn and Zn deficiency, and the antioxidant systems showed different responses to each metal deficiency. Reprogramming of protein biosynthesis/degradation and assembly was more strongly required for acclimation to Fe deficiency. The signaling cascades involving auxin and NDPKs might also play roles in micronutrient stress signaling and pinpoint interesting candidates for future studies. Our results first provide an insight into the complex functional and regulatory networks in potato plants under Fe, Mn and Zn deficiency.
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Affiliation(s)
- Lixiang Cheng
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070, China
| | - Shaomei Zhang
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070, China
| | - Lili Yang
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070, China
| | - Yuping Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou, China
| | - Bin Yu
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070, China
| | - Feng Zhang
- College of Agronomy, Gansu Provincial Key Laboratory of Aridland Crop Science, Gansu Key Laboratory of Crop Improvement and Germplasm Enhancement, Gansu Agricultural University, Lanzhou, 730070, China.
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Nakamura M, Miura A, Nagahata T, Shibata Y, Okada E, Ojima T. Low Zinc, Copper, and Manganese Intake is Associated with Depression and Anxiety Symptoms in the Japanese Working Population: Findings from the Eating Habit and Well-Being Study. Nutrients 2019; 11:nu11040847. [PMID: 30991676 PMCID: PMC6521019 DOI: 10.3390/nu11040847] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/10/2019] [Accepted: 04/11/2019] [Indexed: 12/13/2022] Open
Abstract
Epidemiological studies have suggested that there is an association between diet and mental health. The aim of this study was to investigate the association between the intake of six minerals and mental disorders in a cross-sectional study. We used data from the Eating Habit and Well-being study in Japanese workers. Kessler’s six-item psychological distress scale was used to detect mental disorders, with a cut-off score of 12/13, and a validated food frequency questionnaire was used to estimate dietary mineral intake. A total of 2089 participants with no history of depression were included. The prevalence of mental disorders was 6.9%. The lowest quartiles of zinc, copper, and manganese intakes were associated with mental disorders, whereas the lowest quartiles of calcium, magnesium, and iron intake were not associated with mental disorders. Combination analysis of high (≥median) or low (<median) intake of zinc, copper, and manganese showed that low zinc and low copper intake, even with low or high manganese intake (odds ratio (OR), 2.71, 95% confidence interval (CI), 1.29–5.73, and OR, 3.06, 95% CI, 1.41–6.61, respectively) showed a higher OR than that of high zinc, high copper, and high manganese intake. Further studies are required to investigate the impact of dietary mineral intake on mental health.
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Affiliation(s)
- Mieko Nakamura
- Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan.
| | - Ayako Miura
- Department of Health and Nutrition, Faculty of Health Proportional Sciences, Tokoha University, Hamamatsu 431-2102, Japan.
| | - Tomomi Nagahata
- Department of Nutrition, School of Health and Nutrition, Tokaigakuen University, Nagoya 468-8514, Japan.
| | - Yosuke Shibata
- Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan.
| | - Eisaku Okada
- Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan.
| | - Toshiyuki Ojima
- Department of Community Health and Preventive Medicine, Hamamatsu University School of Medicine, Hamamatsu 431-3192, Japan.
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Choi EK, Nguyen TT, Gupta N, Iwase S, Seo YA. Functional analysis of SLC39A8 mutations and their implications for manganese deficiency and mitochondrial disorders. Sci Rep 2018; 8:3163. [PMID: 29453449 PMCID: PMC5816659 DOI: 10.1038/s41598-018-21464-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Accepted: 02/05/2018] [Indexed: 11/19/2022] Open
Abstract
SLC39A8 encodes ZIP8, a divalent metal ion transporter. Mutations in the SLC39A8 gene are associated with congenital disorder of glycosylation type II and Leigh syndrome. Notably, affected patients with both disorders exhibited severe manganese (Mn) deficiency. The cellular function of human SLC39A8 (hSLC39A8) and the mechanisms by which mutations in this protein lead to human diseases are unclear. Herein, we show that hSLC39A8 mediates 54Mn uptake by the cells, and its expression is regulated by Mn. While expression of wild-type hSLC39A8 increased 54Mn uptake activity, disease-associated mutations abrogated the ability of the transporter to mediate Mn uptake into the cells, thereby providing a causal link to severe Mn deficiency. All mutants failed to localize on the cell surface and were retained within the endoplasmic reticulum. Interestingly, expression of hSLC39A8 mutants of both CDG type II and Leigh syndrome reduced mitochondrial 54Mn levels and activity of Mn-dependent mitochondrial superoxide dismutase MnSOD, and in turn increased oxidative stress. The expression of wild-type hSLC39A8, but not the disease-associated mutants, promoted mitochondrial functions. Moreover, loss of function analyses further corroborate hSLC39A8's critical role in mediating Mn uptake and mitochondrial function. Our results provide a potential pathogenic mechanism of diseases that are associated with hSLC39A8 mutations.
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Affiliation(s)
- Eun-Kyung Choi
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA
| | - Trang-Tiffany Nguyen
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA
| | - Neil Gupta
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA
| | - Shigeki Iwase
- Department of Human Genetics, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Young Ah Seo
- Department of Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI, 48109, USA.
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Durkalec M, Nawrocka A, Krzysiak M, Larska M, Kmiecik M, Posyniak A. Trace elements in the liver of captive and free-ranging European bison (Bison bonasus L.). Chemosphere 2018; 193:454-463. [PMID: 29154121 DOI: 10.1016/j.chemosphere.2017.11.050] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 10/15/2017] [Accepted: 11/10/2017] [Indexed: 06/07/2023]
Abstract
European bison is classified as a vulnerable species because of many threats. We analyzed the content of toxic and essential elements (Ag, Al, As, Ba, Be, Cd, Co, Cr, Cu, Hg, Mg, Mn, Na, Ni, Pb, Se, Th, Tl, U, V, and Zn) in the livers of 30 captive and free-ranging European bison from the Bison Breeding Center in Smardzewice and from Białowieża Primeval Forest in Poland. The contents of toxic elements were lower than reported previously in European Bison and were similar to those of wild ungulates from non-polluted areas. Accumulation of Cd and Cr was related to the age of animals. We compared the mineral status between captive and free-ranging European bison to verify whether the maintenance type could affect concentrations of trace elements in the liver. The concentration of Mn and Zn differed between captive and free-ranging group. Our results were compared to the reference values of essential elements for cattle. All animals from this study were Se-deficient and more than 80% of them have Cu deficiency. Deficiency of Mn was present in 20% of captive and 37% of free-ranging animals whereas Zn in 37% and 3% respectively. Statistical analysis confirmed that Mn and Zn deficiencies were related o the maintenance of animals (p<0.05). We revealed that mineral deficiencies could be an additional threat to the Polish population of European bison. Thus, the monitoring of essential minerals is necessary and future work is required to optimize the supplementation and foddering for preventing the occurrence of mineral deficiencies.
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Affiliation(s)
- Maciej Durkalec
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100 Puławy, Poland.
| | - Agnieszka Nawrocka
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100 Puławy, Poland
| | - Michał Krzysiak
- European Bison Breeding Centre, Białowieża National Park, Park Pałacowy 11, 17-230 Białowieża, Poland; Department of Epizootiology and Clinic of Infectious Diseases, Faculty of Veterinary Medicine, University of Life Sciences in Lublin, Głęboka 30, 20-612 Lublin, Poland
| | - Magdalena Larska
- Department of Virology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100 Puławy, Poland
| | - Mirosława Kmiecik
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100 Puławy, Poland
| | - Andrzej Posyniak
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Aleja Partyzantów 57, 24-100 Puławy, Poland
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Alejandro S, Cailliatte R, Alcon C, Dirick L, Domergue F, Correia D, Castaings L, Briat JF, Mari S, Curie C. Intracellular Distribution of Manganese by the Trans-Golgi Network Transporter NRAMP2 Is Critical for Photosynthesis and Cellular Redox Homeostasis. Plant Cell 2017; 29:3068-3084. [PMID: 29180598 PMCID: PMC5757278 DOI: 10.1105/tpc.17.00578] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/17/2017] [Accepted: 11/25/2017] [Indexed: 05/18/2023]
Abstract
Plants require trace levels of manganese (Mn) for survival, as it is an essential cofactor in oxygen metabolism, especially O2 production via photosynthesis and the disposal of superoxide radicals. These processes occur in specialized organelles, requiring membrane-bound intracellular transporters to partition Mn between cell compartments. We identified an Arabidopsis thaliana member of the NRAMP family of divalent metal transporters, NRAMP2, which functions in the intracellular distribution of Mn. Two knockdown alleles of NRAMP2 showed decreased activity of photosystem II and increased oxidative stress under Mn-deficient conditions, yet total Mn content remained unchanged. At the subcellular level, these phenotypes were associated with a loss of Mn content in vacuoles and chloroplasts. NRAMP2 was able to rescue the mitochondrial yeast mutant mtm1∆ In plants, NRAMP2 is a resident protein of the trans-Golgi network. NRAMP2 may act indirectly on downstream organelles by building up a cytosolic pool that is used to feed target compartments. Moreover, not only does the nramp2 mutant accumulate superoxide ions, but NRAMP2 can functionally replace cytosolic superoxide dismutase in yeast, indicating that the pool of Mn displaced by NRAMP2 is required for the detoxification of reactive oxygen species.
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Affiliation(s)
- Santiago Alejandro
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Rémy Cailliatte
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Carine Alcon
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Léon Dirick
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Frédéric Domergue
- Laboratoire de Biogénèse Membranaire CNRS, Université de Bordeaux, UMR 5200, F-33140 Villenave d'Ornon, France
| | - David Correia
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Loren Castaings
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Jean-François Briat
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Stéphane Mari
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
| | - Catherine Curie
- BPMP, CNRS, INRA, Montpellier SupAgro, Université de Montpellier, F-34060 Montpellier, France
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Jiang WD, Tang RJ, Liu Y, Wu P, Kuang SY, Jiang J, Tang L, Tang WN, Zhang YA, Zhou XQ, Feng L. Impairment of gill structural integrity by manganese deficiency or excess related to induction of oxidative damage, apoptosis and dysfunction of the physical barrier as regulated by NF-κB, caspase and Nrf2 signaling in fish. Fish Shellfish Immunol 2017; 70:280-292. [PMID: 28887111 DOI: 10.1016/j.fsi.2017.09.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2017] [Revised: 08/24/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
This study is for the first time to explore the possible effects of dietary manganese (Mn) on structural integrity and the related signaling in the gills of fish. Grass carp (Ctenopharyngodon idella) were fed with six diets containing graded levels of Mn [3.65-27.86 mg Mn/kg diet] for 8 weeks. The results firstly demonstrated that Mn deficiency aggravated inflammation indicated by up-regulation of pro-inflammatory cytokines (tumour necrosis factor α, interleukin 8, and interleukin 1β mRNA levels) and down-regulation of anti-inflammatory cytokines (interleukin 10, transforming growth factor-β1) mRNA levels, which might be partially related to the up-regulation of nuclear factor kappa B (NF-κB p65) and down-regulation of nuclear inhibitor factor κBα (iκBα) mRNA levels in the gills of fish. Meanwhile, Mn deficiency caused DNA fragmentation, which might be partially associated with the up-regulation of the apoptosis signaling (caspase-3, caspase-8 and caspase-9) in the gills of fish. Furthermore, Mn deficiency-caused apoptosis might be partly related to the increases of oxidative damage that indicated by increases of lipid peroxidation and protein oxidation, and decreases of antioxidant enzyme activities [included Mn superoxide dismutase (MnSOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione-S-transferase (GST)]. However, Mn deficiency only down-regulated MnSOD and GST mRNA levels, which might be partially related to the up-regulation of NF-E2-related factor-2 (Nrf2) inhibitor (Keap1), and only down-regulated the gene expression of claudin-b and claudin-15 to disrupt the TJ in the gills of fish. Excessive Mn led to negative effects on partial parameters studied in the gills of fish. The optimal levels of Mn based on protecting against ROS, MDA and PC in the gills of grass carp were 17.04, 16.86 and 21.20 mg/kg diet, respectively. Collectively, Mn deficiency or excess could cause inflammation, apoptosis, antioxidant system disruption and change tight junction protein (claudin-b and claudin-15) transcription abundances, which might be partially related to the NF-κB p65, caspase-(3,8,9) and Nrf2 signaling, in the gills of fish.
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Affiliation(s)
- Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Ren-Jun Tang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Jun Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Wu-Neng Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China.
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China.
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11
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Du K, Liu M, Pan Y, Zhong X, Wei M. Association of Serum Manganese Levels with Alzheimer's Disease and Mild Cognitive Impairment: A Systematic Review and Meta-Analysis. Nutrients 2017; 9:nu9030231. [PMID: 28273828 PMCID: PMC5372894 DOI: 10.3390/nu9030231] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Accepted: 02/28/2017] [Indexed: 01/20/2023] Open
Abstract
Manganese (Mn) is one of the most studied environmental heavy metals linked to Alzheimer’s disease (AD). However, it remains unclear whether serum Mn levels are associated with AD and mild cognition impairment (MCI, a prodromal stage of AD). We conducted a meta-analysis to analyze the serum Mn levels in patients with AD and MCI. A systematic database search of PubMed, Web of Science, and the China National Knowledge Infrastructure (CNKI) identified 17 studies, including 836 cases and 1254 health controls (HC). Random-effects meta-analysis showed that patients with AD had significantly reduced serum Mn levels compared with HC subjects (SMD = −0.39; 95% CI (−0.71, −0.08); p = 0.015). MCI individuals had a tendency toward reduced serum Mn levels compared with HC subjects (SMD = −0.31; 95% CI (−0.70, 0.08); p = 0.117). A significant decrease in serum Mn levels was found in patients with cognitive impairment (including both AD patients and MCI patients) (SMD = −0.37, 95% CI (−0.60; −0.13); p = 0.002). Finally, no significant differences were observed between AD and MCI patients in serum levels (SMD = 0.24; 95% CI (−0.23, 0.72); p = 0.310). Our findings show that the serum Mn levels are lower in AD patients, and Mn deficiency may be a risk factor for AD.
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Affiliation(s)
- Ke Du
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China.
| | - Mingyan Liu
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China.
| | - Yanzhu Pan
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China.
| | - Xin Zhong
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China.
| | - Minjie Wei
- School of Pharmacy, Department of Pharmacology, China Medical University, Shenyang 110122, China.
- Liaoning Key Laboratory of Molecular Targeted Anti-Tumor Drug Development and Evaluation, Shenyang 110122, China.
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12
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Riley LG, Cowley MJ, Gayevskiy V, Roscioli T, Thorburn DR, Prelog K, Bahlo M, Sue CM, Balasubramaniam S, Christodoulou J. A SLC39A8 variant causes manganese deficiency, and glycosylation and mitochondrial disorders. J Inherit Metab Dis 2017; 40:261-269. [PMID: 27995398 DOI: 10.1007/s10545-016-0010-6] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 11/02/2016] [Accepted: 12/05/2016] [Indexed: 12/16/2022]
Abstract
SLC39A8 variants have recently been reported to cause a type II congenital disorder of glycosylation (CDG) in patients with intellectual disability and cerebellar atrophy. Here we report a novel SLC39A8 variant in siblings with features of Leigh-like mitochondrial disease. Two sisters born to consanguineous Lebanese parents had profound developmental delay, dystonia, seizures and failure to thrive. Brain MRI of both siblings identified bilateral basal ganglia hyperintensities on T2-weighted imaging and cerebral atrophy. CSF lactate was elevated in patient 1 and normal in patient 2. Respiratory chain enzymology was only performed on patient 1 and revealed complex IV and II + III activity was low in liver, with elevated complex I activity. Complex IV activity was borderline low in patient 1 muscle and pyruvate dehydrogenase activity was reduced. Whole genome sequencing identified a homozygous Chr4(GRCh37):g.103236869C>G; c.338G>C; p.(Cys113Ser) variant in SLC39A8, located in one of eight regions identified by homozygosity mapping. SLC39A8 encodes a manganese and zinc transporter which localises to the cell and mitochondrial membranes. Patient 2 blood and urine manganese levels were undetectably low. Transferrin electrophoresis of patient 2 serum revealed a type II CDG defect. Oral supplementation with galactose and uridine led to improvement of the transferrin isoform pattern within 14 days of treatment initiation. Oral manganese has only recently been added to the treatment. These results suggest SLC39A8 deficiency can cause both a type II CDG and Leigh-like syndrome, possibly via reduced activity of the manganese-dependent enzymes β-galactosyltransferase and mitochondrial manganese superoxide dismutase.
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Affiliation(s)
- Lisa G Riley
- Genetic Metabolic Disorders Research Unit, The Children's Hospital at Westmead, KRI, Level 3, Locked Bag 4001, Westmead, NSW, 2145, Australia.
- Discipline of Paediatrics & Child Health, Sydney Medical School, University of Sydney, Sydney, NSW, Australia.
| | - Mark J Cowley
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Velimir Gayevskiy
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Sydney, NSW, Australia
| | - Tony Roscioli
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Sydney, NSW, Australia
- St Vincent's Clinical School, University of New South Wales, Sydney, Australia
- Department of Medical Genetics, Sydney Children's Hospital, Randwick, Australia
| | - David R Thorburn
- Murdoch Childrens Research Institute and Victorian Clinical Genetics Services, Royal Children's Hospital, Melbourne, VIC, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
| | - Kristina Prelog
- Medical Imaging Department, The Children's Hospital at Westmead, Sydney, NSW, Australia
| | - Melanie Bahlo
- Department of Medical Biology, University of Melbourne, Melbourne, VIC, Australia
- Population Health and Immunity Division, The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC, Australia
| | - Carolyn M Sue
- Kinghorn Centre for Clinical Genomics, Garvan Institute of Medical Research, Sydney, NSW, Australia
- Department of Neurogenetics, Kolling Institute of Medical Research, University of Sydney and Royal North Shore Hospital, Sydney, NSW, Australia
| | - Shanti Balasubramaniam
- Discipline of Paediatrics & Child Health, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
- Western Sydney Genetics Program, The Children's Hospital at Westmead, Sydney, NSW, Australia
- Discipline of Genetic Medicine, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
| | - John Christodoulou
- Genetic Metabolic Disorders Research Unit, The Children's Hospital at Westmead, KRI, Level 3, Locked Bag 4001, Westmead, NSW, 2145, Australia
- Discipline of Paediatrics & Child Health, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
- Murdoch Childrens Research Institute and Victorian Clinical Genetics Services, Royal Children's Hospital, Melbourne, VIC, Australia
- Department of Paediatrics, University of Melbourne, Melbourne, VIC, Australia
- Western Sydney Genetics Program, The Children's Hospital at Westmead, Sydney, NSW, Australia
- Discipline of Genetic Medicine, Sydney Medical School, University of Sydney, Sydney, NSW, Australia
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13
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Abstract
While the neurotoxic effects of manganese were recognized in 1837, the first genetic disorder of manganese metabolism was described only in 2012 when homozygous mutations in SLC30A10 were reported to cause manganese-induced neurotoxicity. Two other genetic disorders of manganese metabolism have now been described - mutations in SLC39A14 cause manganese toxicity, while mutations in SLC39A8 cause manganese and zinc deficiency. Study of rare genetic disorders often provides unique insights into disease pathobiology, and the discoveries of these three inherited disorders of manganese metabolism are already transforming our understanding of manganese homeostasis, detoxification, and neurotoxicity. Here, we review the mechanisms by which mutations in SLC30A10, SLC39A14, and SLC39A8 impact manganese homeostasis to cause human disease.
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Affiliation(s)
- Charles E Zogzas
- Division of Pharmacology & Toxicology, College of Pharmacy; Institute for Cellular & Molecular Biology; and Institute for Neuroscience, The University of Texas at Austin, 3.510E BME, 107 W. Dean Keeton, Austin, TX, 78712, USA
| | - Somshuvra Mukhopadhyay
- Division of Pharmacology & Toxicology, College of Pharmacy; Institute for Cellular & Molecular Biology; and Institute for Neuroscience, The University of Texas at Austin, 3.510E BME, 107 W. Dean Keeton, Austin, TX, 78712, USA.
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14
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Freeland-Graves JH, Mousa TY, Kim S. International variability in diet and requirements of manganese: Causes and consequences. J Trace Elem Med Biol 2016; 38:24-32. [PMID: 27264059 DOI: 10.1016/j.jtemb.2016.05.004] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 05/18/2016] [Accepted: 05/20/2016] [Indexed: 12/14/2022]
Abstract
Manganese (Mn) is an essential trace element that is critical for human health and development. At the turn of the century when diets were based on whole grains, cereals and other traditional foods, Mn intakes (8-9mg/d) were much greater than that prevalent today (2mg/d). As societies have developed, diets have shifted as part of a nutrition transition, to those that are high in processed foods, fat, and sugar. These foods are virtually devoid of Mn. Thus, dietary Mn has declined substantially throughout the world, as confirmed by several wide-scale, total diet studies. International variability in dietary Mn is considerable, due to tremendous diversity in food and culture. In countries where fruit and vegetable intake may be limited, i.e. the United Kingdom, populations may ingest much lower levels of Mn (1.4mg/d) as compared to Asian cultures (4mg/d) which have an abundance of plant foods in their food supply and cuisine. The bioavailability of Mn must be considered, including chemical form, oxidation state, mineral-mineral interactions, presence of dietary components and traditional food processing techniques (milling, germination, malting, fermentation). Manganese toxicity is a public health problem that results from exposure to a naturally high water source or contaminated environment of the soil and/or drinking water. In contrast, inadequate intake is associated with adverse health effects such as diabetes, metabolic syndrome, poor birth outcomes and possibly, cancer. Future studies are recommended to set dietary standards for this mineral in countries that lack recommendations to help achieve optimal health.
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Affiliation(s)
| | - Tamara Y Mousa
- Department of Nutritional Sciences, University of Texas at Austin, USA
| | - Sangyoung Kim
- Department of Nutritional Sciences, University of Texas at Austin, USA
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15
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Kimura M. [Function and disease in manganese]. Nihon Rinsho 2016; 74:1186-1191. [PMID: 27455810] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Manganese is a metal that has been known named a Greek word "Magnesia" meaning magnesia nigra from Roman Empire. Manganese provide the wide range of metablic function and the multiple abnomalities from its deficiency or toxicity. In 1931, the essentiality of manganese was demonstrated with the authoritative poor growth and declined reproduction in its deficiency. Manganese deficiency has been recognized in a number of species and its signs are impaired growth, impaired reproduction, ataxia, skeletal abnormalities and disorders in lipid and carbohydrate metabolism. Manganese toxicity is also acknowledged as health hazard for animals and humans. Here manganese nutrition, metabolism and metabolic function are summarized.
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16
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Schmidt SB, Jensen PE, Husted S. Manganese Deficiency in Plants: The Impact on Photosystem II. Trends Plant Sci 2016; 21:622-632. [PMID: 27150384 DOI: 10.1016/j.tplants.2016.03.001] [Citation(s) in RCA: 94] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2015] [Revised: 03/08/2016] [Accepted: 03/19/2016] [Indexed: 05/04/2023]
Abstract
Manganese (Mn) is an essential plant micronutrient with an indispensable function as a catalyst in the oxygen-evolving complex (OEC) of photosystem II (PSII). Even so, Mn deficiency frequently occurs without visual leaf symptoms, thereby masking the distribution and dimension of the problem restricting crop productivity in many places of the world. Hence, timely alleviation of latent Mn deficiency is a challenge in promoting plant growth and quality. We describe here the key mechanisms of Mn deficiency in plants by focusing on the impact of Mn on PSII stability and functionality. We also address the mechanisms underlying the differential tolerance towards Mn deficiency observed among plant genotypes, which enable Mn-efficient plants to grow on marginal land with poor Mn availability.
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Affiliation(s)
- Sidsel Birkelund Schmidt
- Plant and Soil Science Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Poul Erik Jensen
- Molecular Plant Biology Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark
| | - Søren Husted
- Plant and Soil Science Section, Copenhagen Plant Science Centre, Department of Plant and Environmental Sciences, Faculty of Science, University of Copenhagen, Thorvaldsensvej 40, 1871 Frederiksberg C, Denmark.
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17
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Khorobrykh AA, Klimov VV. Involvement of molecular oxygen in the donor-side photoinhibition of Mn-depleted photosystem II membranes. Photosynth Res 2015; 126:417-425. [PMID: 25862644 DOI: 10.1007/s11120-015-0135-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Accepted: 03/26/2015] [Indexed: 06/04/2023]
Abstract
It has been shown by Khorobrykh et al. (Biochemistry (Moscow) 67:683-688, 2002); Yanykin et al. (Biochim Biophys Acta 1797:516-523, 2010); Khorobrykh et al. (Biochemistry 50:10658-10665, 2011) that Mn-depleted photosystem II (PSII) membrane fragments are characterized by an enhanced oxygen photoconsumption on the donor side of PSII which is accompanied with hydroperoxide formation and it was suggested that the events are related to the oxidative photoinhibition of PSII. Experimental confirmation of this suggestion is presented in this work. The degree of photoinhibition was determined by the loss of the capability of exogenous electron donors (Mn(2+) or sodium ascorbate) to the reactivation of electron transport [measured by the light-induced changes of chlorophyll fluorescence yield (∆F)] in Mn-depleted PSII membranes. The transition from anaerobic conditions to aerobic ones significantly activated photoinhibition of Mn-depleted PSII membranes both in the absence and in the presence of exogenous electron acceptor, ferricyanide. The photoinhibition of Mn-depleted PSII membranes was suppressed upon the addition of exogenous electron donors (Mn(2+), diphenylcarbazide, and ferrocyanide). The addition of superoxide dismutase did not affect the photoinhibition of Mn-depleted PSII membranes. It is concluded that the interaction of molecular oxygen (rather than superoxide anion radical formed on the acceptor side of PSII) with the oxidized components of the donor side of PSII reflects the involvement of O2 in the donor-side photoinhibition of Mn-depleted PSII membranes.
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Affiliation(s)
- A A Khorobrykh
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
| | - V V Klimov
- Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
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18
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Tabatadze T, Zhorzholiani L, Kherkheulidze M, Kandelaki E, Ivanashvili T. HAIR HEAVY METAL AND ESSENTIAL TRACE ELEMENT CONCENTRATION IN CHILDREN WITH AUTISM SPECTRUM DISORDER. Georgian Med News 2015:77-82. [PMID: 26656556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Our study aims evaluation of level of essential trace elements and heavy metals in the hair samples of children with autistic spectrum disorder (ASD) and identification of changes that are associated with autistic spectrum disorders. Case-control study was conducted at Child Development Center of Iashvili Children's Central Hospital (LD).We studied 60 children aged from 4 to 5 years old. The concentrations of 28 elements among (Ca,Zn, K, Fe, Cu, Se, Mn, Cr, S, Br, Cl, Co, Ag, V, Ni, Rb, Mo, Sr, Ti, Ba, Pb, As, Hg, Cd, Sb, Zr, Sn, Bi) them trace elements and toxic metals) were determined in scalp hair samples of children (n=30) with autistic spectrum disorder (ASD) and from control group of healthy children (n=30) with matched sex and age. Micro-elemental status was detected in the hair, with roentgen-fluorescence spectrometer method (Method MBИ 081/12-4502-000, Apparatus ALVAX- CIP, USA - UKRAIN) .To achieve the similarity of study and control groups, pre and postnatal as well as family and social history were assessed and similar groups were selected. Children with genetic problems, malnourished children, children from families with social problems were excluded from the study. The diagnosis of ASD were performed by pediatrician and psychologist (using M-CHAT and ADOS) according to DSM IV (Diagnostic and Statistical Manual of Mental Disorders from the American Psychiatric association) criteria. The study was statistically analyzed using computer program SPSS 19. Deficiencies of essential trace microelements revealed in both group, but there was significant difference between control and studied groups. The most deficient element was zinc (92% in target and 20% in control), then - manganese (55% and 8%) and selenium (38% and 4%). In case of cooper study revealed excess concentration of this element only in target group in 50% of cases. The contaminations to heavy metals were detected in case of lead (78% and 16), mercury (43% and 10%) and cadmium (38% and 8%). The study statistical results indicated, that deficient concentrations of trace elements such as zinc, manganese, molybdenum and selenium in hair significantly linked with ASD (Kramer's V was 0,740; 0,537; 0,333; 0,417 accordingly). In case of cooper we got excess levels of this element and this data was highly linked with autism spectrum disorder. We got high associations and significant values between of lead, mercury and cadmium concentrations and ASD. Study results indicate that there are significant differences of hair essential trace elements concentrations in children with autism spectrum disorder comparing with healthy children group. The result obtained also showed high contamination to heavy metals such as lead, mercury and cadmium in ASD children compared to healthy ones. So, our study demonstrated alteration in levels of toxic heavy metals and essential trace elements in children with autistic spectrum disorders as compared to healthy children. This suggests a possible pathophysiological role of heavy metals and trace elements in the genesis of symptoms of autism spectrum disorders.
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Affiliation(s)
- T Tabatadze
- M. Iashvili Children's Central Hospital, Child Development Center; Iv. Javakhishvili Tbilisi State University, Georgia
| | - L Zhorzholiani
- M. Iashvili Children's Central Hospital, Child Development Center; Iv. Javakhishvili Tbilisi State University, Georgia
| | - M Kherkheulidze
- M. Iashvili Children's Central Hospital, Child Development Center; Iv. Javakhishvili Tbilisi State University, Georgia
| | - E Kandelaki
- M. Iashvili Children's Central Hospital, Child Development Center; Iv. Javakhishvili Tbilisi State University, Georgia
| | - T Ivanashvili
- M. Iashvili Children's Central Hospital, Child Development Center; Iv. Javakhishvili Tbilisi State University, Georgia
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19
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Jiang WD, Tang RJ, Liu Y, Kuang SY, Jiang J, Wu P, Zhao J, Zhang YA, Tang L, Tang WN, Zhou XQ, Feng L. Manganese deficiency or excess caused the depression of intestinal immunity, induction of inflammation and dysfunction of the intestinal physical barrier, as regulated by NF-κB, TOR and Nrf2 signalling, in grass carp (Ctenopharyngodon idella). Fish Shellfish Immunol 2015; 46:406-416. [PMID: 26072140 DOI: 10.1016/j.fsi.2015.06.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 06/03/2015] [Accepted: 06/07/2015] [Indexed: 06/04/2023]
Abstract
Intestinal mucosal immune components and mRNA levels of inflammatory cytokines, tight junction proteins, antioxidant enzymes and related signalling molecules in young grass carp (Ctenopharyngodon idellus) under dietary manganese (Mn) deficiency or excess were investigated. Fish were fed the diets containing graded levels of Mn [3.65-27.86 mg Mn kg(-1) diet] for 8 weeks. The results demonstrated that Mn deficiency significantly decreased the lysozyme and acid phosphatase (ACP) activities, up-regulated tumour necrosis factor α (TNF-α), interleukin 8 and the signalling factor nuclear factor-κB p65, and down-regulated interleukin 10 (IL-10), transforming growth factor β1, inhibitor of signalling factors κB-α and target of rapamycin mRNA levels in the proximal intestine (PI), mid intestine (MI) and distal intestine (DI). However, Mn deficiency did not change the C3 content in the PI, whereas it decreased the C3 contents in the MI and DI. Additionally, Mn depletion also resulted in significantly low mRNA levels for tight junction proteins (claudin-b, claudin-c, claudin-15, occludin and zonula occludens-1), antioxidant enzymes (MnSOD, GPx and CAT) and NF-E2-related factor-2 in the intestines of fish. Excessive Mn exhibited toxic effects similar to Mn deficiency, where optimal Mn contents reversed those indicators. In conclusion, Mn deficiency or excess causes the depression of intestinal immunity, induction of inflammation and dysfunction of the intestinal physical barrier relating to NF-κB, TOR and Nrf2 signalling in grass carp. Furthermore, quadratic regression analysis at 95% maximum response of lysozyme and acid phosphatase activities in the distal intestine of young grass carp revealed the optimum dietary Mn levels to be 8.90 and 8.99 mg kg(-1) diet, respectively.
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Affiliation(s)
- Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Ren-Jun Tang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Jun Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Juan Zhao
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, 430072, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Wu-Neng Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu, 610066, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China.
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Fish Nutrition and Safety in Production Sichuan University Key Laboratory, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Sichuan, Chengdu, 611130, China.
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Chung SE, Cheong HK, Ha EH, Kim BN, Ha M, Kim Y, Hong YC, Park H, Oh SY. Maternal Blood Manganese and Early Neurodevelopment: The Mothers and Children's Environmental Health (MOCEH) Study. Environ Health Perspect 2015; 123:717-22. [PMID: 25734517 PMCID: PMC4492260 DOI: 10.1289/ehp.1307865] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2013] [Accepted: 03/02/2015] [Indexed: 05/20/2023]
Abstract
BACKGROUND Manganese is an essential trace element and common component of water, soil, and air. Prenatal manganese exposure may affect fetal and infantile neurodevelopment, but reports on in utero manganese exposure and infant neurodevelopment are rare. OBJECTIVE This study was conducted to investigate a relationship between maternal blood manganese level and neurodevelopment of infants at 6 months of age. METHODS Data were obtained from the Mothers and Children's Environmental Health (MOCEH) birth cohort study. The study population included 232 pairs of pregnant women and their infants at 6 months of age. Maternal blood manganese was measured at term, just before delivery. Mental and psychomotor development in infancy was assessed at 6 months of age using the Bayley Scales of Infant Development. The relationship between maternal blood manganese level and the mental and psychomotor development indexes (MDI and PDI) was estimated for manganese modeled as a linear and as a categorical variable and using penalized splines for nonlinear modeling. RESULTS Mean ± SD maternal blood manganese concentration was 22.5 ± 6.5 μg/L. After adjustment for potential confounders, blood manganese was used as a continuous variable in a linear and nonlinear model. Associations between maternal blood manganese and MDI and PDI scores followed an inverted U-shape dose-response curve after adjustment for potential confounders, with lower scores associated with both low and high blood concentrations [MDI: likelihood-ratio test (LRT) p = 0.075, PDI: LRT p = 0.038]. Associations of both outcomes with increasing blood manganese shifted from positive to negative at concentrations of 24-28 μg/L in this cohort of term, normal birth weight children. CONCLUSION Although no cut-off point has been established to define manganese toxicity, both high and low blood manganese levels may be associated with neurobehavioral function in infants.
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Affiliation(s)
- Soo Eun Chung
- Department of Social and Preventive Medicine, Sungkyunkwan University School of Medicine, Suwon, Republic of Korea
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Zargar SM, Fujiwara M, Inaba S, Kobayashi M, Kurata R, Ogata Y, Fukao Y. Correlation analysis of proteins responsive to Zn, Mn, or Fe deficiency in Arabidopsis roots based on iTRAQ analysis. Plant Cell Rep 2015; 34:157-66. [PMID: 25366567 DOI: 10.1007/s00299-014-1696-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 09/21/2014] [Accepted: 10/07/2014] [Indexed: 05/25/2023]
Abstract
For discovering the functional correlation between the identified and quantified proteins by iTRAQ analysis, here we propose a correlation analysis method with cosine correlation coefficients as a powerful tool. iTRAQ analysis is a quantitative proteomics approach that enables identification and quantification of a large number of proteins. In order to obtain proteins responsive to Zn, Mn, or Fe mineral deficiency, we conducted iTRAQ analysis using a microsomal fraction of protein extractions from Arabidopsis root tissues. We identified and quantified 730 common proteins in three biological replicates with less than 1 % false discovery rate. To determine the role of these proteins in tolerating mineral deficiencies and their relation to each other, we calculated cosine correlation coefficients and represented the outcomes on a correlation map for visual understanding of functional relations among the identified proteins. Functionally similar proteins were gathered into the same clusters. Interestingly, a cluster of proteins (FRO2, IRT1, AHA2, PDR9/ABCG37, and GLP5) highly responsive to Fe deficiency was identified, which included both known and unknown novel proteins involved in tolerating Fe deficiency. We propose that the correlation analysis with the cosine correlation coefficients is a powerful method for finding important proteins of interest to several biological processes through comprehensive data sets.
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Affiliation(s)
- Sajad Majeed Zargar
- Plant Global Education Project Graduate School of Biological Sciences, Nara Institute of Science and Technology, Takayama, 8916-5, Ikoma, 630-0192, Japan
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Wang J, Wang ZY, Wang ZJ, Liu R, Liu SQ, Wang L. Effects of manganese deficiency on chondrocyte development in tibia growth plate of Arbor Acres chicks. J Bone Miner Metab 2015; 33:23-9. [PMID: 24578216 DOI: 10.1007/s00774-014-0563-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Accepted: 12/26/2013] [Indexed: 10/25/2022]
Abstract
The aim of this study was to investigate the effects of manganese (Mn) deficiency on chondrocyte development in tibia growth plate. Ninety 1-day-old Arbor Acres chicks were randomly divided into three groups and fed on control diet (60 mg Mn/kg diet) and manganese deficient diets (40 mg Mn/kg diet, manganese deficiency group I; 8.7 mg Mn/kg diet, manganese deficiency group II), respectively. The width of the proliferative zone of growth plate was measured by the microscope graticule. Chondrocyte apoptosis was estimated by TUNEL staining. Gene expression of p21 and Bcl-2, and expression of related proteins were analyzed by quantitative real time reverse transcription polymerase chain reaction and immunohistochemistry, respectively. Compared with the control group, manganese deficiency significantly decreased the proliferative zone width and Bcl-2 mRNA expression level, while significantly increased the apoptotic rates and the expression level of p21 gene in chondrocytes. The results indicate that manganese deficiency had a negative effect on chondrocyte development, which was mediated by the inhibition of chondrocyte proliferation and promotion of chondrocyte apoptosis.
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Affiliation(s)
- Jian Wang
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Daizong Road No. 61, Taian, 271018, People's Republic of China
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Zhaojun W, Lin W, Zhenyong W, Jian W, Ran L. Effects of manganese deficiency on serum hormones and biochemical markers of bone metabolism in chicks. J Bone Miner Metab 2013; 31:285-92. [PMID: 23408160 DOI: 10.1007/s00774-012-0417-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2012] [Accepted: 12/09/2012] [Indexed: 11/26/2022]
Abstract
In order to investigate the effect of manganese (Mn) deficiency on bone metabolism in chicks, ninety 1-day-old male Arbor Acre chicks were randomly divided into 3 groups and each group were given a diet having a different concentration of Mn (60 mg kg(-1), control group; 40 mg kg(-1), Mn-deficient group I; 8.7 mg kg(-1), Mn-deficient group II). The serum was collected at 42 days old. Tests were performed to evaluate the changes in the levels of PTH, CT, ALP, TrACP, HOP TNF-alpha, OC, Mn and Ca in the serum of the chicks and the results showed that the levels of CT, ALP, TrACP, HOP, and Mn decreased markedly (P < 0.05), while PTH, Ca, and TNF-alpha increased markedly (P < 0.05) due to manganese deficiency in the diet, which indicates that Mn deficiency results in disorder of bone regulatory hormones and enzymes of bone metabolism in the serum.
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Affiliation(s)
- Wang Zhaojun
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, 271018, Taian, Shandong, People's Republic of China
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Petrova IO, Kurashov VN, Zaspa AA, Semenov AY, Mamedov MD. Vectorial charge transfer reactions on the donor side of manganese-depleted and reconstituted photosystem 2 core complexes. Biochemistry (Mosc) 2013; 78:395-402. [PMID: 23590442 DOI: 10.1134/s0006297913040081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The light-induced functioning of photosystem 2 (PS 2) is directly linked to the translocation of both electrons and protons across the membrane, which results in the formation of transmembrane electric potential difference (ΔΨ). Generation of ΔΨ due to S-state transitions of the water oxidation complex was demonstrated for the first time in Mn-depleted and reconstituted PS 2 core complexes incorporated into liposomes. The kinetics and relative amplitudes of the electrogenic reactions in dark-adapted samples during S1→S2, S2→S3, and S4→S0 transitions in response to the first, second and third laser flashes were comparable to those obtained in the intact PS 2 core particles. These results expand current understanding of the nature and mechanisms of electrogenic (vectorial) reactions due to a charge transfer on the donor side of PS 2.
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Affiliation(s)
- I O Petrova
- Belozersky Institute of Physico-Chemical Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
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27
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Akutsu Y, Kono T, Uesato M, Hoshino I, Murakami K, Fujishiro T, Imanishi S, Endo S, Toyozumi T, Matsubara H. Are additional trace elements necessary in total parenteral nutrition for patients with esophageal cancer receiving cisplatin-based chemotherapy? Biol Trace Elem Res 2012; 150:109-15. [PMID: 23054866 DOI: 10.1007/s12011-012-9513-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Accepted: 09/24/2012] [Indexed: 01/31/2023]
Abstract
It is known that cisplatin induces the excretion of zinc from the urine and thereby reduces its serum concentration. However, the fluctuation of these trace elements during or after cisplatin-based chemotherapy has not been evaluated. To answer this question, we performed a clinical study in esophageal cancer patients undergoing cisplatin-based chemotherapy. Eighteen patients with esophageal cancer who were not able to swallow food or water orally due to complete stenosis of the esophagus were evaluated. The patients were divided into a control group [total parenteral nutrition (TPN) alone for 28 days, ten cases] and an intervention group (TPN with additional trace elements for 28 days, eight cases). The serum concentrations of zinc, iron, copper, manganese, triiodothyronin (T3), and thyroxin (T4), as alternative indicators of iodine, were measured on days 0, 14, and 28 of treatment, and statistically analyzed on day 28. In the control group, the serum concentration of copper was significantly decreased from 135.4 (day 0) to 122.1 μg/ml (day 14), and finally to 110.6 μg/ml (day 28, p = 0.015). The concentration of manganese was also significantly decreased from 1.34 (day 0) to 1.17 μg/ml (day 14) and finally to 1.20 (day 28, p = 0.049). The levels of zinc, iron, T3, and T4 were not significantly changed. In the intervention group, the supplementation with trace elements successfully prevented these decreases in their concentrations. TPN with supplementary trace elements is preferable and recommended for patients who are undergoing chemotherapy in order to maintain the patients' nutrient homeostasis.
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Affiliation(s)
- Yasunori Akutsu
- Department of Frontier Surgery, Graduate School of Medicine, Chiba University, 1-8-1, Inohana, Chuo-ku, Chiba, 260-8670, Japan.
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Abstract
Manganese (Mn) and iron (Fe) are essential mineral micronutrients for plants and their deficiency and or toxicity represents a serious agricultural problem. In rice the information about genes involved in Mn uptake from soil is scarce. Recently, we showed that OsNRAMP5 is a plasma membrane protein involved in Mn and Fe transport. The concentration of Mn in roots, shoots and xylem sap of OsNRAMP5 RNAi (OsNRAMP5i) plants was significantly reduced compared with WT plants. The expression of OsNRAMP5 is not controlled by Fe deficiency in root and was also observed in pistil, ovary, lemma and palea. These data show that rice would utilize OsNRAMP5 for constitutive Fe and Mn uptake, while OsNRAMP5 would also play a role in Fe and Mn transport during flowering and seed development.
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Affiliation(s)
- Yasuhiro Ishimaru
- Department of Global Agricultural Sciences; Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo, Japan
- Faculty of Science; Graduate School of Science; Tohoku University; Sendai, Miyagi, Japan
| | - Khurram Bashir
- Department of Global Agricultural Sciences; Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo, Japan
| | - Hiromi Nakanishi
- Department of Global Agricultural Sciences; Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo, Japan
| | - Naoko K. Nishizawa
- Department of Global Agricultural Sciences; Graduate School of Agricultural and Life Sciences; The University of Tokyo; Tokyo, Japan
- Research Institute for Bioresources and Biotechnology; Ishikawa Prefectural University; Ishikawa, Japan
- * Correspondence to: Naoko K. Nishizawa;
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Saidi MN, Jbir R, Ghorbel I, Namsi A, Drira N, Gargouri-Bouzid R. Brittle leaf disease induces an oxidative stress and decreases the expression of manganese-related genes in date palm (Phoenix dactylifera L.). Plant Physiol Biochem 2012; 50:1-7. [PMID: 22099513 DOI: 10.1016/j.plaphy.2011.09.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2011] [Accepted: 09/26/2011] [Indexed: 05/31/2023]
Abstract
In Tunisia, date orchards are being decimated by a disease called brittle leaf disease of unknown origin. Previous studies reported that affected soils, roots and leaves were manganese deficient. In this study, we investigated the biochemical and molecular response of MFC-affected date palms to the oxidative stress generated by manganese deficiency. Both the malondialdehyde (MDA) content which is indicative of lipid peroxidation and the activities of antioxidant enzyme were measured in affected leaves and roots. The expression profiles of oxidative stress-related genes encoding superoxide dismutases and peroxidases were also investigated. The data show that the MDA concentration increased but not significantly in affected leaves. However, such MDA increase was significant in roots of MFC-affected plants. The total superoxide dismutase (SOD) activity increased in affected leaves and roots, while RT-PCR experiments showed that MnSOD RNA decreased in affected leaves and roots unlike FeSOD and Cu/Zn-SOD RNA expression increased in these organs. In addition ascorbate peroxidase (APx) and glutathione peroxidase (GPx) RNA expression increased in diseased leaves and roots.
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Affiliation(s)
- Mohammed Najib Saidi
- Laboratoire des Biotechnologies Végétales Appliquées à l'Amélioration des Cultures, Ecole Nationale d'Ingénieurs de Sfax, Route Soukra Km 4, B.P 1173, 3038 Sfax, Tunisia.
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Abstract
The objectives of this study were to evaluate some of the popular rotation crops grown in Hungary for tolerance to low external Mn(2+) levels and to determine the critical tissue concentration of Mn(2+) deficiency during early stages of growth. The minimum Mn(2+) concentration required in soil nutrient contents was 42.5 mg kg(-1) for sunflower, 24.3 mg kg(-1) for tobacco and 10.2 mg kg(-1) for triticale. Sunflower, tobacco and triticale achieved optimum growth at 48.0-65.0 mg Mn(2+) kg(-1), 24.9-32.1 mg Mn( n+) kg(-1) and 28.7 to 29.6 mg Mn(2+) kg(-1), respectively. Critical shoot Mn(2+) concentration at early stages of growth was 53.6 mg kg(-1) in sunflower, 458.0 mg kg(-1) in tobacco and 193.8 mg kg(-1) in triticale. Our results demonstrate that the tolerance to low external Mn(2+) (triticale: <30.2 mg kg(-1); sunflower: <56.2 mg kg(-1); tobacco: <69.3 mg kg(-1)) and the critical tissue Mn(2+) levels for deficiency varied significantly between crop species tested.
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Affiliation(s)
- Laszlo Marton
- Agrochemistry Division, Research Institute for Soil Science and Agricultural Chemistry of the Hungarian Academy of Sciences, PO Box 35, 1525 Budapest, Hungary.
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Gong X, Qu C, Liu C, Hong M, Wang L, Hong F. Effects of manganese deficiency and added cerium on nitrogen metabolism of maize. Biol Trace Elem Res 2011; 144:1240-50. [PMID: 21660532 DOI: 10.1007/s12011-011-9105-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2011] [Accepted: 05/29/2011] [Indexed: 11/29/2022]
Abstract
Manganese is one of the essential microelements for plant growth, and cerium is a beneficial element for plant growth. However, whether manganese deficiency affects nitrogen metabolism of plants and cerium improves the nitrogen metabolism of plants by exposure to manganese-deficient media are still unclear. The main aim of the study was to determine the effects of manganese deficiency in nitrogen metabolism and the roles of cerium in the improvement of manganese-deficient effects in maize seedlings. Maize seedlings were cultivated in manganese present Meider's nutrient solution. They were subjected to manganese deficiency and to cerium chloride administered in the manganese-present and manganese-deficient media. Maize seedlings grown in the various media were measured for key enzyme activities involved in nitrogen metabolism, such as nitrate reductase, glutamate dehydrogenase, glutamine synthetase, and glutamic-oxaloace transaminase. We found that manganese deficiency restricted uptake and transport of NO(3)(-), inhibited activities of nitrogen-metabolism-related enzymes, such as nitrate reductase, glutamine synthetase, and glutamic-oxaloace transaminase, thus decreasing the synthesis of chlorophyll and soluble protein, and inhibited the growth of maize seedlings. Manganese deficiency promoted the activity of glutamate dehydrogenase and reduced the toxicity of excess ammonia to the plant, while added cerium relieved the damage to nitrogen metabolism caused by manganese deficiency in maize seedlings. However, cerium addition exerted positively to relieve the damage of nitrogen metabolism process in maize seedlings caused by exposure to manganese-deficient media.
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Affiliation(s)
- Xiaolan Gong
- Medical College, Soochow University, Suzhou, 215123, People's Republic of China
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Gong X, Hong M, Wang Y, Zhou M, Cai J, Liu C, Gong S, Hong F. Cerium relieves the inhibition of photosynthesis of maize caused by manganese deficiency. Biol Trace Elem Res 2011; 141:305-16. [PMID: 20480399 DOI: 10.1007/s12011-010-8716-z] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2010] [Accepted: 04/22/2010] [Indexed: 10/19/2022]
Abstract
It had been proved that manganese (Mn) deficiency could damage the photosynthesis of plants, and lanthanides could improve photosynthesis and greatly promote plant growth. However, the mechanisms on how Mn deficiency and cerium (Ce) addition affects the photosynthetic carbon reaction of plants under manganese deficiency are still poorly understood. In this study, the main aim was to determine Mn deficiency and cerium addition effects in key enzymes of CO(2) assimilation of maize. Maize plants were cultivated in Hoagland's solution. They were subjected to Mn deficiency and to Ce administered in the Mn-present Hoagland's media and Mn-deficient Hoagland's media. The growth condition, chlorophyll synthesis, and oxygen evolution were significantly destroyed by manganese deficiency, the activities of ribulose-1, 5-bisphosphate caroxylase/oxygenase (Rubisco), and Rubisco activase, and their genes expressions were inhibited by Mn deficiency. However, Ce treatment promoted the chlorophyll synthesis, oxygen evolution, and the activities of two key enzymes in CO(2) assimilation. Reverse transcription polymerase chain reaction was carried out, and the results showed that the mRNA expressions of Rubisco small subunit (rbcS), Rubisco large subunit (rbcL), and Rubisco activase subunit (rca) in the cerium-treated maize were obviously increased. One of the possible mechanisms of carbon reaction promoted by Ce is that the Ce treatment resulted in the enhancements of Rubisco and Rubisco activase mRNA amounts, the protein levels, and activities of Rubisco and Rubisco activase, thereby leading to the high rate of photosynthetic carbon reaction and enhancement of maize growth under Mn-deficient conditions. Together, the experimental study implied that Ce could partly substitute for magnesium and increase the oxidative stress-resistance of spinach chloroplast grown in Mn-deficiency conditions, but the mechanisms need further study.
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Affiliation(s)
- Xiaolan Gong
- Medical College of Soochow University, Suzhou, People's Republic of China
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Kokhlova EA, Tarasova LV, Lazebnik LB. [The relationship of clinical and morphological characteristics of chronic gastritis with microelements deficiency]. Eksp Klin Gastroenterol 2011:36-41. [PMID: 22629737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We aimed to analyze the interconnection of chronic gastritis clinicopathologic characteristics with the content of selenium, zinc and manganese in blood serum. It is stated that the concentration of the microelements being studied (mostly selenium) is the prognostic indication of prescription of inflammatory process in the mucous coat of stomach and its clinical activity (pain and dyspeptic syndrome intensity), and the degree of microelements deficiency increases proportionally with intensity augmentation of atrophic processes in stomach.
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Husted S, Laursen KH, Hebbern CA, Schmidt SB, Pedas P, Haldrup A, Jensen PE. Manganese deficiency leads to genotype-specific changes in fluorescence induction kinetics and state transitions. Plant Physiol 2009; 150:825-33. [PMID: 19369593 PMCID: PMC2689976 DOI: 10.1104/pp.108.134601] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2008] [Accepted: 04/04/2009] [Indexed: 05/04/2023]
Abstract
Barley (Hordeum vulgare) genotypes display a marked difference in their ability to tolerate growth at low manganese (Mn) concentrations, a phenomenon designated as differential Mn efficiency. Induction of Mn deficiency in two genotypes differing in Mn efficiency led to a decline in the quantum yield efficiency for both, although faster in the Mn-inefficient genotype. Leaf tissue and thylakoid Mn concentrations were reduced under Mn deficiency, but no difference between genotypes was observed and no visual Mn deficiency symptoms were developed. Analysis of the fluorescence induction kinetics revealed that in addition to the usual O-J-I-P steps, clear K and D steps were developed in the Mn-inefficient genotype under Mn deficiency. These marked changes indicated damages to photosystem II (PSII). This was further substantiated by state transition measurements, indicating that the ability of plants to redistribute excitation energy was reduced. The percentage change in state transitions for control plants with normal Mn supply of both genotypes was 9% to 11%. However, in Mn-deficient leaves of the Mn-inefficient genotypes, state transitions were reduced to less than 1%, whereas no change was observed for the Mn-efficient genotypes. Immunoblotting and the chlorophyll a/b ratio confirmed that Mn deficiency in general resulted in a significant reduction in abundance of PSII reaction centers relative to the peripheral antenna. In addition, PSII appeared to be significantly more affected by Mn limitation than PSI. However, the striking genotypic differences observed in Mn-deficient plants, when analyzing state transitions and fluorescence induction kinetics, could not be correlated with specific changes in photosystem proteins. Thus, there is no simple linkage between protein expression and the differential reduction in state transition and fluorescence induction kinetics observed for the genotypes under Mn deficiency.
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Affiliation(s)
- Søren Husted
- Plant and Soil Science Laboratory, Department of Agriculture, University of Copenhagen, DK-1871 Frederiksberg C, Copenhagen, Denmark.
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Jensen LT, Carroll MC, Hall MD, Harvey CJ, Beese SE, Culotta VC. Down-regulation of a manganese transporter in the face of metal toxicity. Mol Biol Cell 2009; 20:2810-9. [PMID: 19369420 PMCID: PMC2695789 DOI: 10.1091/mbc.e08-10-1084] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2008] [Revised: 03/24/2009] [Accepted: 04/08/2009] [Indexed: 11/11/2022] Open
Abstract
The yeast Smf1p Nramp manganese transporter is posttranslationally regulated by environmental manganese. Smf1p is stabilized at the cell surface with manganese starvation, but is largely degraded in the vacuole with physiological manganese through a mechanism involving the Rsp5p adaptor complex Bsd2p/Tre1p/Tre2p. We now describe an additional level of Smf1p regulation that occurs with toxicity from manganese, but not other essential metals. This regulation is largely Smf1p-specific. As with physiological manganese, toxic manganese triggers vacuolar degradation of Smf1p by trafficking through the multivesicular body. However, regulation by toxic manganese does not involve Bsd2p/Tre1p/Tre2p. Toxic manganese triggers both endocytosis of cell surface Smf1p and vacuolar targeting of intracellular Smf1p through the exocytic pathway. Notably, the kinetics of vacuolar targeting for Smf1p are relatively slow with toxic manganese and require prolonged exposures to the metal. Down-regulation of Smf1p by toxic manganese does not require transport activity of Smf1p, whereas such transport activity is needed for Smf1p regulation by manganese starvation. Furthermore, the responses to manganese starvation and manganese toxicity involve separate cellular compartments. We provide evidence that manganese starvation is sensed within the lumen of the secretory pathway, whereas manganese toxicity is sensed within an extra-Golgi/cytosolic compartment of the cell.
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Affiliation(s)
- Laran T Jensen
- Department of Environmental Health Sciences and Department of Biochemistry and Molecular Biology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD 21205, USA.
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Hebbern CA, Laursen KH, Ladegaard AH, Schmidt SB, Pedas P, Bruhn D, Schjoerring JK, Wulfsohn D, Husted S. Latent manganese deficiency increases transpiration in barley (Hordeum vulgare). Physiol Plant 2009; 135:307-16. [PMID: 19140891 DOI: 10.1111/j.1399-3054.2008.01188.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
To investigate if latent manganese (Mn) deficiency leads to increased transpiration, barley plants were grown for 10 weeks in hydroponics with daily additions of Mn in the low nM range. The Mn-starved plants did not exhibit visual leaf symptoms of Mn deficiency, but Chl a fluorescence measurements revealed that the quantum yield efficiency of PSII (F(v)/F(m)) was reduced from 0.83 in Mn-sufficient control plants to below 0.5 in Mn-starved plants. Leaf Mn concentrations declined from 30 to 7 microg Mn g(-1) dry weight in control and Mn-starved plants, respectively. Mn-starved plants had up to four-fold higher transpiration than control plants. Stomatal closure and opening upon light/dark transitions took place at the same rate in both Mn treatments, but the nocturnal leaf conductance for water vapour was still twice as high in Mn-starved plants compared with the control. The observed increase in transpiration was substantiated by (13)C-isotope discrimination analysis and gravimetric measurement of the water consumption, showing significantly lower water use efficiency in Mn-starved plants. The extractable wax content of leaves of Mn-starved plants was approximately 40% lower than that in control plants, and it is concluded that the increased leaf conductance and higher transpirational water loss are correlated with a reduction in the epicuticular wax layer under Mn deficiency.
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Affiliation(s)
- Christopher A Hebbern
- Department of Agriculture and Ecology, University of Copenhagen, Frederiksberg C, Denmark
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Rodrigues JL, Batista BL, Nunes JA, Passos CJS, Barbosa F. Evaluation of the use of human hair for biomonitoring the deficiency of essential and exposure to toxic elements. Sci Total Environ 2008; 405:370-6. [PMID: 18632136 DOI: 10.1016/j.scitotenv.2008.06.002] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2008] [Revised: 06/04/2008] [Accepted: 06/06/2008] [Indexed: 04/14/2023]
Abstract
Monitoring the nutritional status of essential elements and assessing exposure of individuals to toxic elements is of great importance for human health. Thus, the appropriate selection and measurement of biomarkers of internal dose is of critical importance. Due to their many advantages, hair samples have been widely used to assess human exposure to different contaminants. However, the validity of this biomarker in evaluating the level of trace elements in the human body is debatable. In the present study, we evaluated the relationship between levels of trace elements in hair and whole blood or plasma in a Brazilian population. Hair, blood and plasma were collected from 280 adult volunteers for metal determination. An ICP-MS was used for sample analysis. Manganese, copper, lead and strontium levels in blood varied from 5.1 to 14.7, from 494.8 to 2383.8, from 5.9 to 330.1 and from 11.6 to 87.3 microg/L, respectively. Corresponding levels in hair varied from 0.05 to 6.71, from 0.02 to 37.59, from 0.02 to 30.63 and from 0.9 to 12.6 microg/g. Trace element levels in plasma varied from 0.07 to 8.62, from 118.2 to 1577.7 and from 2.31 to 34.2 microg/L for Mn, Cu and Sr, respectively. There was a weak correlation (r=0.22, p<0.001) between lead levels in hair and blood. Moreover, copper and strontium levels in blood correlate with those levels in plasma (r=0.64 , p<0.001 for Cu) and (r=0.22, p<0.05 for Sr). However, for Cu, Mn and Sr there was no correlation between levels in hair and blood. Our findings suggest that while the idea of measuring trace elements in hair is attractive, hair is not an appropriate biomarker for evaluating Cu, Mn and Sr deficiency or Pb exposure.
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Affiliation(s)
- Jairo L Rodrigues
- Laboratório de Toxicologia e Essencialidade de Metais, Depto. de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto-USP, Ribeirão Preto-SP, Brazil
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38
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Jiang WZ. Comparison of responses to Mn deficiency between the UK wheat genotypes Maris Butler, Paragon and the Australian wheat genotype C8MM. J Integr Plant Biol 2008; 50:457-465. [PMID: 18713380 DOI: 10.1111/j.1744-7909.2007.00631.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Wheat grown in Mn-deficient soil has been widely observed to produce much reduced yields. Breeding for Mn-efficient wheat genotypes adapted to Mn-deficient soils would represent a long-term solution for wheat agronomy. To characterize the physiological basis of Mn efficiency in wheat genotypes would facilitate the breeding programs for producing Mn-efficient wheat. Using a solution culture and a soil culture system in the present study, a Mn-efficient UK wheat genotype Maris Butler and a Mn-inefficient UK wheat genotype Paragon have been compared with a Mn-efficient Australian wheat genotype C8MM in the responses to Mn deficiency in order to characterize the Mn efficiency in these wheat genotypes. Results showed that in solution culture, Maris Butler grown under Mn deficiency had 77% relative dry matter yield of control plants that were grown under Mn sufficiency, whereas C8MM and Paragon had 60% and 58% relative dry matter yield of their respective controls. Results from the soil culture demonstrated that relative dry matter yield remained high for Maris Butler and C8MM (53% and 56%, respectively), whereas the value for Paragon dropped to 33%. In terms of dry matter yield and photosynthetic efficiency, Maris Butler demonstrated Mn efficiency in both solution culture and soil culture, whereas C8MM showed Mn efficiency only in soil culture. Results also demonstrated that under Mn-depleted supply in soil, plants of C8MM had a significantly higher ability in Mn uptake, whereas plants of Maris Butler showed a higher internal Mn use efficiency in comparison with plants of Paragon. Results from the present study indicate that the ability of C8MM to accumulate higher amounts of Mn is the basis of the improved Mn efficiency of this genotype in comparison with Paragon, and in Maris Butler there is a higher internal use of Mn expressed as an improved photosynthetic efficiency in conferring its Mn efficiency. It is suggested that more than one mechanism has arisen in wheat to confer tolerance to Mn deficiency.
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Affiliation(s)
- Wen-Zhi Jiang
- Writtle College, Essex University, Chelmsford, Essex CM13RR, UK.
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39
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Wei Yang TJ, Perry PJ, Ciani S, Pandian S, Schmidt W. Manganese deficiency alters the patterning and development of root hairs in Arabidopsis. J Exp Bot 2008; 59:3453-64. [PMID: 18772308 PMCID: PMC2529234 DOI: 10.1093/jxb/ern195] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 06/30/2008] [Accepted: 07/01/2008] [Indexed: 05/18/2023]
Abstract
Manganese (Mn) is the second most prevalent transition metal in the Earth's crust but its availability is often limited due to rapid oxidation and low mobility of the oxidized forms. Acclimation to low Mn availability was studied in Arabidopsis seedlings subjected to Mn deficiency. As reported here, Mn deficiency caused a thorough change in the arrangement and characteristics of the root epidermal cells. A proportion of the extra hairs formed upon Mn deficiency were located in atrichoblast positions, indicative of a post-embryonic reprogramming of the cell fate acquired during embryogenesis. When plants were grown under a light intensity of >50 micromol m(-2) s(-1) in the presence of manganese root hair elongation was substantially inhibited, whereas Mn-deficient seedlings displayed stimulated root hair development. GeneChip analysis revealed several candidate genes with potential roles in the reprogramming of rhizodermal cells. None of the genes that function in epidermal cell fate specification were affected by Mn deficiency, indicating that the patterning mechanism which controls the differentiation of rhizodermal cells during embryogenesis have been bypassed under Mn-deficient conditions. This assumption is supported by the partial rescue of the hairless cpc mutant by Mn deficiency. Inductively coupled plasma-optical emission spectroscopy (ICP-OES) analysis revealed that, besides the anticipated reduction in Mn concentration, Mn deficiency caused an increase in iron concentration. This increase was associated with a decreased transcript level of the iron transporter IRT1, indicative of a more efficient transport of iron in the absence of Mn.
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40
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Nagata T, Nagasawa T, Zharmukhamedov SK, Klimov VV, Allakhverdiev SI. Reconstitution of the water-oxidizing complex in manganese-depleted photosystem II preparations using synthetic binuclear Mn(II) and Mn(IV) complexes: production of hydrogen peroxide. Photosynth Res 2007; 93:133-8. [PMID: 17437183 DOI: 10.1007/s11120-007-9161-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2006] [Accepted: 03/23/2007] [Indexed: 05/14/2023]
Abstract
Reconstitution of Mn-depleted PSII particles with synthetic binuclear Mn complexes (one Mn(II)(2) complex and one Mn(IV)(2) complex) was examined. In both cases the electron-transfer rates in the reconstituted systems were found to be up to 75-82% of that measured in native PSII but the oxygen evolution activity remained lower (<5-40%). However, hydrogen peroxide was also produced by the reconstituted samples. These samples therefore represent a new type of reconstituted PSII that generates hydrogen peroxide as the final product in reconstituted PSII centers.
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Affiliation(s)
- Toshi Nagata
- Research Center for Molecular-scale Nanoscience, Institute for Molecular Science (IMS), National Institutes for Natural Sciences (NINS), 5-1 Higashiyama, Myodaiji, Okazaki 444-8787, Japan.
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41
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Abstract
Outbreaks of chondrodysplasia in calves occur sporadically every 10-15 years, particularly following prolonged drought conditions, throughout Northeastern Victoria and the Southern Tablelands of New South Wales, Australia. An outbreak spanning 2 calving seasons (2003-2004) involving numerous losses through stillbirth, perinatal loss, and poor growth was investigated. Investigations of 4 representative cases are presented here with a definition of the gross and histopathologic defects and an overview of epidemiologic data gathered from affected farms. Calves showed variable disproportionate dwarfism without arthrogryposis. Long bones were shortened and showed axial rotation. Articular surfaces were distorted with misshapen weight-bearing surfaces associated with variable thickness of articular cartilage. Physes were distorted and variable in thickness with occasional foci of complete closure. The major histologic abnormality in the physes was disorderly development of the zones of cartilage hypertrophy, with reduced number and irregular arrangement of hypertrophic chondrocytes; similar less severe changes were present in the zones of cartilage proliferation. Histochemical staining of the cartilage matrix was variable in intensity, and there was evidence of abnormal resorption of cartilage matrix at the level of the primary spongiosa. Osteoid formation and subsequent bone remodelling seemed unaffected, and diaphyseal cortical bone appeared normal at the gross and light microscopic level. No infectious agents were identified, and other known causes for chondrodysplasia in calves were excluded. The most likely cause for the syndrome was considered to be congenital manganese deficiency. Further surveys of tissue and blood manganese levels from cows and calves with and without clinical signs from the region are planned.
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Affiliation(s)
- P J McLaren
- Gribbles Veterinary Pathology, Clayton, Victoria 3168, Australia.
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42
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Soldin OP, Aschner M. Effects of manganese on thyroid hormone homeostasis: potential links. Neurotoxicology 2007; 28:951-6. [PMID: 17576015 PMCID: PMC2067987 DOI: 10.1016/j.neuro.2007.05.003] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2007] [Revised: 04/26/2007] [Accepted: 05/04/2007] [Indexed: 11/20/2022]
Abstract
Manganese (Mn) is an essential trace nutrient that is potentially toxic at high levels of exposure. As a constituent of numerous enzymes and a cofactor, manganese plays an important role in a number of physiologic processes in mammals. The manganese-containing enzyme, manganese superoxide dismutase (Mn-SOD), is the principal antioxidant enzyme which neutralizes the toxic effects of reactive oxygen species. Other manganese-containing enzymes include oxidoreductases, transferases, hydrolases, lyases, isomerases, ligases and glutamine synthetase. Environmental or occupational exposure to high levels of manganese can cause a neuropathy resembling idiopathic Parkinson's disease, commonly referred to as manganism. Manganism and Parkinson's disease are both characterized by motor deficits and damage to nuclei of the basal ganglia, particularly the substantia nigra, with altered dopamine (and its metabolites) contributing to these disorders. Dopamine, a major neurotransmitter plays a crucial role in the modulation of the cognitive function, working memory and/or attention of the prefrontal cortex and the hippocampus. Dopamine is also a known inhibitory modulator of thyroid stimulating hormone (TSH) secretion. The involvement of dopamine and dopaminergic receptors in neurodevelopment, as well as TSH modulation, led us to hypothesize that excessive manganese exposure may lead to adverse neurodevelopmental outcomes due to the disruption of thyroid homeostasis via the loss of dopaminergic control of TSH regulation of thyroid hormones. This disruption may alter thyroid hormone levels, resulting in some of the deficits associated with gestational exposure to manganese. While the effects of manganese in adult populations are relatively well documented, comprehensive data on its neurodevelopmental effects are sparse. Given the importance of this topic, we review the potential participation of thyroid hormone dyshomeostasis in the neurodevelopmental effects of manganese positing the hypotheses that manganese may directly or indirectly affect thyroid function by injuring the thyroid gland or dysregulating dopaminergic modulation of thyroid hormone synthesis.
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Affiliation(s)
- O P Soldin
- Department of Oncology and Medicine, The Center for Study of Sex Differences, Georgetown University Medical Center, Washington, DC, USA.
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43
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Peiter E, Montanini B, Gobert A, Pedas P, Husted S, Maathuis FJM, Blaudez D, Chalot M, Sanders D. A secretory pathway-localized cation diffusion facilitator confers plant manganese tolerance. Proc Natl Acad Sci U S A 2007; 104:8532-7. [PMID: 17494768 PMCID: PMC1895984 DOI: 10.1073/pnas.0609507104] [Citation(s) in RCA: 177] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Manganese toxicity is a major problem for plant growth in acidic soils, but cellular mechanisms that facilitate growth in such conditions have not been clearly delineated. Established mechanisms that counter metal toxicity in plants involve chelation and cytoplasmic export of the metal across the plasma or vacuolar membranes out of the cell or sequestered into a large organelle, respectively. We report here that expression of the Arabidopsis and poplar MTP11 cation diffusion facilitators in a manganese-hypersensitive yeast mutant restores manganese tolerance to wild-type levels. Microsomes from yeast expressing AtMTP11 exhibit enhanced manganese uptake. In accord with a presumed function of MTP11 in manganese tolerance, Arabidopsis mtp11 mutants are hypersensitive to elevated levels of manganese, whereas plants overexpressing MTP11 are hypertolerant. In contrast, sensitivity to manganese deficiency is slightly decreased in mutants and increased in overexpressing lines. Promoter-GUS studies showed that AtMTP11 is most highly expressed in root tips, shoot margins, and hydathodes, but not in epidermal cells and trichomes, which are generally associated with manganese accumulation. Surprisingly, imaging of MTP11-EYFP fusions demonstrated that MTP11 localizes neither to the plasma membrane nor to the vacuole, but to a punctate endomembrane compartment that largely coincides with the distribution of the trans-Golgi marker sialyl transferase. Golgi-based manganese accumulation might therefore result in manganese tolerance through vesicular trafficking and exocytosis. In accord with this proposal, Arabidopsis mtp11 mutants exhibit enhanced manganese concentrations in shoots and roots. We propose that Golgi-mediated exocytosis comprises a conserved mechanism for heavy metal tolerance in plants.
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Affiliation(s)
- Edgar Peiter
- *Department of Biology, University of York, P.O. Box 373, York YO10 5YW, United Kingdom
| | - Barbara Montanini
- Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Henri Poincaré, 1136 Interactions Arbres-Microorganismes, Nancy-Université, 54506 Vandoeuvre-les-Nancy, France; and
| | - Anthony Gobert
- *Department of Biology, University of York, P.O. Box 373, York YO10 5YW, United Kingdom
| | - Pai Pedas
- Plant and Soil Science Laboratory, Department of Agricultural Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Søren Husted
- Plant and Soil Science Laboratory, Department of Agricultural Science, University of Copenhagen, Thorvaldsensvej 40, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Frans J. M. Maathuis
- *Department of Biology, University of York, P.O. Box 373, York YO10 5YW, United Kingdom
| | - Damien Blaudez
- Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Henri Poincaré, 1136 Interactions Arbres-Microorganismes, Nancy-Université, 54506 Vandoeuvre-les-Nancy, France; and
| | - Michel Chalot
- Unité Mixte de Recherche, Institut National de la Recherche Agronomique/Université Henri Poincaré, 1136 Interactions Arbres-Microorganismes, Nancy-Université, 54506 Vandoeuvre-les-Nancy, France; and
| | - Dale Sanders
- *Department of Biology, University of York, P.O. Box 373, York YO10 5YW, United Kingdom
- To whom correspondence should be addressed. E-mail:
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Abstract
A study was conducted to examine the effects of low dietary Mn on growth performance of pregnant heifers and fetal development of their offspring. Twenty pregnant Angus (n = 9) and Simmental (n = 11) heifers averaging 17 mo of age and 447.6 kg of initial body weight were used in the 267-d study. Heifers were selected from a previous study examining the effects of supplemental Mn on growth and reproductive performance of heifers. Ten pregnant heifers per treatment from the control (analyzed at 15.8 mg of Mn/kg of DM) and supplemental Mn (50 mg/kg of DM) treatments were randomly selected at the conclusion of the previous study to continue on their respective dietary treatments through gestation and early lactation. Serum cholesterol for the 267-d period was not affected by treatment. Whole-blood Mn concentration of heifers on d 267 was not affected by treatment. Whole-blood Mn concentration at birth was lower in calves born to control heifers than in those born to supplemented heifers. Calves born to control heifers weighed less at birth than those born to heifers receiving supplemental Mn. Calves born to control heifers suffered from varying signs of Mn deficiency, including superior brachygnathism, unsteadiness, disproportionate dwarfism, and swollen joints. Results suggest that feeding gestating heifers a diet containing 16.6 mg of Mn/kg of DM is not adequate for proper fetal development. Supplementation of 50 mg of Mn/kg of DM to the control diet was sufficient to overcome any signs of Mn deficiency in calves.
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Affiliation(s)
- S L Hansen
- Department of Animal Science, North Carolina State University, Raleigh 27695-7621, USA
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45
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Szentmihályi K, Vinkler P, Fodor J, Balla J, Lakatos B. [The role of manganese in the human organism]. Orv Hetil 2006; 147:2027-30. [PMID: 17165602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Manganese is an essential element to be found in all tissues. It is needed for metabolism of amino acids, lipids, proteins and carbohydrates. Manganese takes part directly in the defense of red blood cells, in the metabolism of iron, in the synthesis of cholesterol of the membranes and oligosaccharides. Manganese plays significant role in the free radical defense system as MnSOD, which protects the endothelial and red blood cells and mitochondria from the damage caused by superoxide radicals. The metabolism of manganese (absorption, transport) is determined by the chemical form and quantity of manganese. Manganese deficiency is rare on healthy nutrition whereas manganese accumulation may develop as an occupational disease, preliminary.
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Affiliation(s)
- Klára Szentmihályi
- Magyar Tudományos Akadémia, Kémiai Kutatóközpont, Anyag- és Környezetkémiai Intézet, Budapest.
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46
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Kalea AZ, Schuschke DA, Harris PD, Klimis-Zacas DJ. Cyclo-oxygenase inhibition restores the attenuated vasodilation in manganese-deficient rat aorta. J Nutr 2006; 136:2302-7. [PMID: 16920845 DOI: 10.1093/jn/136.9.2302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Previously we showed that manganese (Mn) deficiency enhances the arterial contractile response to alpha(1) adrenergic stimuli and affects vasomotor tone. The aim of this study was to test the hypothesis that dietary Mn deficiency inhibits the vasodilation pathways of rat aorta. Vascular ring studies were conducted in aortic rings from weanling male Sprague-Dawley rats that were fed either a Mn deficient (MnD) or a Mn adequate/control diet (MnA) (<1 and 12 mg/kg Mn, respectively) for a 14-wk period. We investigated endothelium-dependent vasodilation induced by acetylcholine (Ach; 10(-8) to 3 x 10(-6) mol/L) in isolated 3-mm aortic rings precontracted with l-phenylephrine (l-Phe; 10(-6) mol/L). Seven concentrations of Ach were used in the presence or absence of inhibitors of nitric oxide synthase and cyclo-oxygenase. After a second precontraction, 8 doses of sodium nitroprusside (SNP; 10(-8) to 10(-5) mol/L) were added to assess endothelium-independent vasodilation. We observed a decrease in Ach-induced and SNP-induced vasodilation in MnD rat aortas when compared with MnA rat aortas (P </= 0.05). Vessel sensitivity of MnD and MnA aortas to Ach was similar. The addition of l-arginine had no effect on nitric oxide-mediated vasodilation in either group. Nitric oxide synthase-inhibition blunted endothelium-dependent vasodilation to the same degree for both diet groups. Cyclo-oxygenase inhibition enhanced both Ach-induced and SNP-induced vasodilation of MnD rings compared with MnA aortic rings (P </= 0.05). Manganese inhibits the synthesis or activity of a prostanoid-derived vasoconstrictor, which seems to be present at basal and at stimulated levels. This effect is independent of membrane-related events. Our results provide further information on the critical role of Mn on vasomotor tone.
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Affiliation(s)
- Anastasia Z Kalea
- Department Physiology and Biophysics, School of Medicine, University of Louisville, KY 40292, USA
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47
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Ensunsa JL, Symons JD, Lanoue L, Schrader HR, Keen CL. Reducing arginase activity via dietary manganese deficiency enhances endothelium-dependent vasorelaxation of rat aorta. Exp Biol Med (Maywood) 2005; 229:1143-53. [PMID: 15564441 DOI: 10.1177/153537020422901109] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
L-Arginine is a common substrate for the enzymes arginase and nitric oxide synthase (NOS). Acute inhibition of arginase enzyme activity improves endothelium-dependent vasorelaxation, presumably by increasing availability of substrate for NOS. Arginase is activated by manganese (Mn), and the consumption of a Mn-deficient (Mn-) diet can result in low arginase activity. We hypothesize that endothelium-dependent vasorelaxation is greater in rats fed Mn- versus Mn sufficient (Mn+) diets. Newly weaned rats fed Mn+ diets (0.5 microg Mn/g; n = 12) versus Mn+ diets (45 microg Mn/g; n = 12) for 44 +/- 3 days had (i) lower liver and kidney Mn and arginase activity (P < or = 0.05), (ii) higher plasma L-arginine (P < or = 0.05), (iii) similar plasma and urine nitrate + nitrite, and (iv) similar staining for endothelial nitric oxide synthase in thoracic aorta. Vascular reactivity of thoracic aorta (approximately 720 microm i.d.) and small coronary arteries (approximately 110 microm i.d.) was evaluated using wire myographs. Acetylcholine (ACh; 10(-8)-10(-4) M) produced greater (P < or = 0.05) vasorelaxation in thoracic aorta from Mn- rats (e.g., maximal percent relaxation, 79 +/- 7%) versus Mn + rats (e.g., maximal percent relaxation, 54 +/- 9%) at 5 of 7 evaluated doses. Tension produced by NOS inhibition using N(G) monomethyl-L-arginine (L-NMMA; 10(-3) M) and vasorelaxation evoked by (i) arginase inhibition using difluoromethylornithine (DFMO; 10(-7) M), (ii) ACh (10(-8)-10(-4) M) in the presence of DFMO, and (iii) sodium nitroprusside (10(-9)-10(-4) M) were unaffected by diet. No differences existed between groups concerning these responses in small coronary arteries. These findings support our hypothesis that endothelium-dependent vasorelaxation is greater in aortic segments from rats that consume Mn- versus Mn+ diets; however, responses from small coronary arteries were unaffected.
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Affiliation(s)
- Jodi L Ensunsa
- Department of Nutrition, University of California at Davis, CA 95616, USA
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48
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Kalea AZ, Harris PD, Klimis-Zacas DJ. Dietary manganese suppresses α1 adrenergic receptor-mediated vascular contraction. J Nutr Biochem 2005; 16:44-9. [PMID: 15629240 DOI: 10.1016/j.jnutbio.2004.09.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2004] [Revised: 09/01/2004] [Accepted: 09/08/2004] [Indexed: 11/25/2022]
Abstract
We examined the effect of dietary manganese (Mn) on the vascular contractile machinery in rat thoracic aortas. Weanling male Sprague-Dawley rats were fed either an Mn-deficient (MnD), Mn-adequate (MnA) or Mn-supplemented (MnS) diet (<1, 10-15 and 45-50 ppm Mn, respectively). After 15 weeks on the diets the rats were sacrificed and 3-mm aortic rings were contracted in six cumulative doses of the alpha(1) adrenergic receptor agonist L-phenylephrine (l-Phe, 10(-8) to 3 x 10(-6) M) under 1.5-g preload and relaxed with one dose of acetylcholine (3 x 10(-6) M) to assess intact endothelium. The maximal force (F(max)) of contraction and relaxation, as well as the vessel sensitivity (pD(2)) were determined. Manganese deficiency, assessed by hepatic Mn content, significantly lowered the rate of animal growth. A two-way analysis of variance revealed that MnS animals developed lower F(max) when contracted with L-Phe compared with the MnD and MnA animals (P</=.001). Thus, dietary Mn at levels of 45-50 ppm affects the contractile machinery by reducing maximal vessel contraction to an alpha(1) adrenergic agonist. The observed pD(2) was significantly greater in the MnD group compared with the MnA and MnS animals (P</=.001). Thus, restriction of dietary Mn affects vascular sensitivity to the alpha(1) adrenergic receptor. Our results demonstrate for the first time that dietary Mn influences the receptor signaling pathways and contractile machinery of vascular smooth muscle cells in response to an alpha(1) adrenergic receptor.
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MESH Headings
- Animals
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/physiology
- Body Weight/drug effects
- Diet
- Liver/drug effects
- Male
- Manganese/administration & dosage
- Manganese/deficiency
- Manganese/pharmacology
- Muscle Contraction/drug effects
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/physiology
- Organ Size/drug effects
- Phenylephrine/pharmacology
- Rats
- Rats, Sprague-Dawley
- Receptors, Adrenergic, alpha-1/drug effects
- Receptors, Adrenergic, alpha-1/physiology
- Vasoconstriction/drug effects
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Affiliation(s)
- Anastasia Z Kalea
- Department of Food Science and Human Nutrition, College of Natural Sciences, Forestry and Agriculture, University of Maine, Orono, ME 04469, USA
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49
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Abstract
The subiculum, which has a strategic position in controlling hippocampal activity, is receiving significant attention in epilepsy research. However, the functional organization of subicular circuits remains unknown. Here, we combined different recording and analytical methods to study focal and widespread population activity in the isolated subiculum in zero Mg2+ media. Patch and field recordings were combined to examine the contribution of different cell types to population activity. The properties of cells leading field activity were examined. Predictive factors for a cell to behave as leader included exhibiting the bursting phenotype, displaying a low firing threshold, and having more distal apical dendrites. A subset of bursting cells constituted the first glutamatergic type that led a recruitment process that subsequently activated additional excitatory as well as inhibitory cells. This defined a sequence of synaptic excitation and inhibition that was studied by measuring the associated conductance changes and the evolution of the composite reversal potential. It is shown that inhibition was time-locked to excitation, which shunted excitatory inputs and suppressed firing during focal activity. This was recorded extracellularly as a multi-unit ensemble of active cells, the spatial boundaries of which were controlled by inhibition in contrast to widespread epileptiform activity. Focal activity was not dependent on the preparation or the developmental state because it was also recorded under 5 mm [K+]o and in adult tissue. Our data indicate that the subicular networks can be spontaneously organized as leader-follower local circuits in which excitation is mainly driven by a subset of bursting cells and inhibition controls spatiotemporal firing.
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Affiliation(s)
- L Menendez de la Prida
- Departamento de Neurobiología-Investigación, Hospital Ramón y Cajal, Madrid 28034, Spain.
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50
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Itokawa Y. [Manganese]. Nihon Rinsho 2004; 62 Suppl 12:308-10. [PMID: 15658325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Affiliation(s)
- Yoshinori Itokawa
- Graduate School of Nursing and Social Welfare Sciences, Fukui Prefectural University
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