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Portnova G, Khayrullina GM, Mikheev IV, Byvsheva SM, Proskurnina EV, Martynova O. The Dynamics of Resting-State EEG and Salivary Trace Elements in Patients with Obsessive-Compulsive Disorder. ACS Chem Neurosci 2024; 15:1415-1423. [PMID: 38499363 DOI: 10.1021/acschemneuro.3c00697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024] Open
Abstract
The study of salivary microelements and their neurophysiological and behavioral correlates in patients with obsessive-compulsive disorder (OCD) is a pressing issue in modern psychiatry, which, however, lacks adequate research at this time. In this study, we tested the dynamics of behavioral parameters, resting-state electroencephalogram (EEG), and salivary iron, copper, manganese, magnesium, and zinc in 30 healthy volunteers and 30 individuals with OCD before and after an emotional antisaccade task. The eye-movement data served as a measure of behavioral performance. Our research revealed consistently higher manganese concentrations in the OCD group compared to healthy volunteers associated with a higher EEG ratio of amplitude transformation and symptom severity. The dynamics of salivary microelements and resting-state EEG, possibly influenced by cognitive and emotional load during the anticsaccade task, differed between groups. In healthy volunteers, there was a decrease in salivary iron level with an increase in high-frequency power spectral density of EEG. The OCD group showed a decrease in salivary copper with an increased Hjorth mobility of EEG.
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Affiliation(s)
- Galina Portnova
- Institute of Higher Nervous Activity and Neurophysiology RAS, Butlerova St. 5A, Moscow 117485, Russia
| | - Guzal M Khayrullina
- Institute of Higher Nervous Activity and Neurophysiology RAS, Butlerova St. 5A, Moscow 117485, Russia
- Faculty of Biology and Biotechnology, HSE University, Myasnitskaya 20, Moscow 101000, Russia
| | - Ivan V Mikheev
- Analytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, Lenin Hills 1-3, Moscow 119234, Russia
| | - Sofiya M Byvsheva
- Analytical Chemistry Division, Chemistry Department, M.V. Lomonosov Moscow State University, Lenin Hills 1-3, Moscow 119234, Russia
| | - Elena V Proskurnina
- Research Centre for Medical Genetics, ul. Moskvorechye 1, Moscow 115522, Russia
| | - Olga Martynova
- Institute of Higher Nervous Activity and Neurophysiology RAS, Butlerova St. 5A, Moscow 117485, Russia
- Faculty of Biology and Biotechnology, HSE University, Myasnitskaya 20, Moscow 101000, Russia
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Alqahtani AA, Alhalabi F, Alam MK. Salivary elemental signature of dental caries: a systematic review and meta-analysis of ionomics studies. Odontology 2024; 112:27-50. [PMID: 37526792 DOI: 10.1007/s10266-023-00839-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 07/14/2023] [Indexed: 08/02/2023]
Abstract
Trace- and macro-chemical elements are crucial for cellular physiological functioning, and their alterations in biological fluids might be associated with an underlying pathological state. Hence, this study aimed to examine and summarize the published literature concerning the application of salivary ionomics for caries diagnosis. An extensive search of studies was conducted using PubMed, EMBASE, Web of Science, and Scopus, without any language and year restriction for answering the following PECO question: "In subjects (i.e., children, adolescents, or adults) with good systematic health, are there any variations in the salivary concentrations of trace- or macro-elements between caries-free (CF) individuals and caries-active (CA) subjects?" A modified version of the QUADOMICS tool was used to assess the quality of the included studies. The Review Manager Version 5.4.1. was used for data analyses. The analysis of salivary chemical elements that significantly differed between CF and CA subjects was also performed. Thirty-four studies were included, involving 2299 CA and 1669 CF subjects, having an age range from 3 to 64 years in over 16 countries. The meta-analysis revealed a statistically significant difference (p < 0.05) in the salivary levels of calcium, phosphorus, chloride, magnesium, potassium, sodium, and zinc between CA and CF subjects, suggesting higher levels of calcium, phosphorus, potassium, and sodium in CF subjects while higher levels of chloride, magnesium, and zinc in CA patients. Half of the included studies (17/34) were considered high quality, while the remaining half were considered medium quality. Only zinc and chloride ions were found to be higher significantly and consistent in CF and CA subjects, respectively. Conflicting outcomes were observed for all other salivary chemical elements including aluminum, bromine, calcium, copper, fluoride, iron, potassium, magnesium, manganese, sodium, ammonia, nitrite, nitrate, phosphorus, lead, selenium, and sulfate ions.
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Affiliation(s)
- Abdullah Ali Alqahtani
- Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, 11942, Alkharj, Saudi Arabia.
| | - Feras Alhalabi
- Department of Conservative Dental Sciences, College of Dentistry, Prince Sattam Bin Abdulaziz University, 11942, Alkharj, Saudi Arabia
| | - Mohammad Khursheed Alam
- Orthodontics, Department of Preventive Dental Science, College of Dentistry, Jouf University, Sakaka, Saudi Arabia
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Gatzke-Kopp LM, Riis JL, Ahmadi H, Piccerillo HL, Granger DA, Blair CB, Thomas EA. Environmental tobacco smoke exposure is associated with increased levels of metals in children's saliva. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2023; 33:903-910. [PMID: 37147431 PMCID: PMC10733142 DOI: 10.1038/s41370-023-00554-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 04/18/2023] [Accepted: 04/19/2023] [Indexed: 05/07/2023]
Abstract
BACKGROUND Exposure to environmental tobacco smoke (ETS) has been associated with detectable levels of cotinine (a nicotine metabolite) in children's saliva. However, tobacco smoke also contains toxic and essential trace metals, including chromium (Cr), copper (Cu), lead (Pb), manganese (Mn), nickel (Ni) and zinc (Zn). OBJECTIVE The current study examines whether there is a relationship between ETS exposure, as gauged by salivary cotinine, and salivary levels of these metals in a subset (n = 238) of children from the Family Life Project. METHODS Using inductively-coupled-plasma optical emission spectrophotometry, we measured levels of metals in saliva from children at ~90 months of age. Salivary cotinine was measured using a commercial immunoassay. RESULTS We found that Cr, Cu, Mn, and Zn were detected in most samples (85-99%) with lower levels of detection for Pb and Ni (9.3% and 13.9% respectively). There were no significant differences in any of the metal concentrations between males and females, nor were levels associated with body mass index, although significant differences in salivary Cr and Mn by race, state and income-to-needs ratio were observed. Children with cotinine levels >1 ng/ml had higher levels of Zn (b = 0.401, 95% CI: 0.183 to 0.619; p = 0.0003) and Cu (b = 0.655, 95% CI: 0.206 to 1.104; p = 0.004) compared to children with levels <1 ng/ml, after controlling for multiple confounders, including sex, race, BMI and income-to-needs ratio. Further, we show that children whose cotinine levels were >1 μg/L were more likely to have detectable levels of Pb in their saliva (b = 1.40, 95% CI: 0.424 to 2.459; p = 0.006) compared to children with cotinine levels <1 ng/ml, also considering confounders. IMPACT STATEMENT This is the first study to demonstrate significant associations between salivary cotinine and salivary levels of Cu, Zn and Pb, suggesting that environmental tobacco smoke exposure my be one source of increased children's exposure to heavy metals. This study also demonstrates that saliva samples can be used to measure heavy metal exposure, and thus serve as a non-invasive tool for assessing a broader range of risk indicators.
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Affiliation(s)
- Lisa M Gatzke-Kopp
- Department of Human Development and Family Studies, Penn State University, University Park, PA, 16802, USA
| | - Jenna L Riis
- Department of Psychological Sciences, University of California Irvine, Irvine, CA, USA
- Institute for Interdisciplinary Salivary Bioscience Research, University of California Irvine, Irvine, CA, USA
| | - Hedyeh Ahmadi
- Department of Psychological Sciences, University of California Irvine, Irvine, CA, USA
- Institute for Interdisciplinary Salivary Bioscience Research, University of California Irvine, Irvine, CA, USA
- University Statistical Consulting, LLC, Irvine, CA, USA
| | - Hillary L Piccerillo
- Department of Psychological Sciences, University of California Irvine, Irvine, CA, USA
- Institute for Interdisciplinary Salivary Bioscience Research, University of California Irvine, Irvine, CA, USA
| | - Douglas A Granger
- Institute for Interdisciplinary Salivary Bioscience Research, University of California Irvine, Irvine, CA, USA
- Johns Hopkins University, Bloomberg School of Public Health, and School of Medicine, Baltimore, MD, USA
| | - Clancy B Blair
- Department of Population Health, New York University Grossman School of Medicine, New York, NY, USA
| | - Elizabeth A Thomas
- Institute for Interdisciplinary Salivary Bioscience Research, University of California Irvine, Irvine, CA, USA.
- Department of Epidemiology, University of California Irvine, Irvine, CA, USA.
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Alghadir AH, Gabr SA, Iqbal A. Mineral elements and adiposity-related consequences in adolescents with intellectual disabilities. BMC Mol Cell Biol 2023; 24:29. [PMID: 37730529 PMCID: PMC10512604 DOI: 10.1186/s12860-023-00490-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Accepted: 09/12/2023] [Indexed: 09/22/2023] Open
Abstract
BACKGROUND Patients with intellectual disabilities are shown to have a limited capacity for cooperation, communication,and other biological consequences, which significantly require a specialized interest in healthcare professionals worldwide. AIM In this respect, the present study was designed to evaluate the levels mineral elements, and their correlation with oxidative stress markers and adiposity markers; leptin (L), adiponectin (A), and L/A ratio in adolescents with intellectual disabilities. METHODS A total of 350 schoolchildren aged (12-18 years) were randomly invited to participate in this prospective, observational study. Only 300 participants agreed to participate in this study. According to Intelligence quotients scores (IQ) measured by WISC-III, the participants were classified into two groups; the healthy control group (no = 180; IQ = 90-114); and the moderate intellectual disability (MID) group (no = 120; IQ = 35-49). Adiposity markers; body mass index (BMI), waist-to-hip ratio (WHR), waist-to-height ratio (WHtR), physical activity scores, adipokines biomarkers; leptin, adiponectin, L/A ratio, oxidative stress, and plasma mineral elements were evaluated by prevalidated questionnaires, inductively coupled plasma-mass spectrometry (ICP-MS), colorimetric, and immunoassay techniques. RESULTS Intellectual disability of moderate type was reported in 40% of the studied populations most of them are men aged 12-18 years (66.6% for men vs. 33.3 for females). Obesity was shown to be associated with the degree of intellectual disability of the students. There was a significant (P = 0.001) increase in the BMI, WHR, and WHtR scores as obesity markers with poor physical activity (P = 0.01) in students with poor disability compared to healthy controls (HC). The levels of leptin (P = 0.001), adiponectin (P = 0.01), and L/A ratio (P = 0.01) as adiposity biomarkers were significantly increased in students with MID compared to healthy controls. Also, oxidative stress measured by malondialdehyde (MDA) (P = 0.01) and total antioxidant capacity (TAC) (P = 0.01) were significantly increased in students with MID compared to healthy control subjects. In addition, mineral elements were shown to be linked with intellectual disability. The data showed that the levels of Fe, Mn, Zn, Hg, Pb, Ca, Cr, Mg, and Ni significantly (P = 0.001) increased, and the levels of Al, Na, K, Cu, and Zn/Cu ratio significantly (P = 0.001) decreased in subjects with MID compared to healthy controls. Correlation analysis concluded that changes in mineral elements significantly correlated with adiposity markers, oxidative stress, and the scores of intellectual disability (WISC III-IQ score). CONCLUSION The intellectual disability of moderate type (MID) was associated with abnormal changes in the levels of essential mineral elements and adipokines and increased levels of cellular oxidative stress. Thus, evaluating plasma mineral elements and adipokines levels could be a potential diagnostic parameter for diagnosing MID.
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Affiliation(s)
- Ahmad H Alghadir
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh, 11433, Saudi Arabia
| | - Sami A Gabr
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh, 11433, Saudi Arabia
| | - Amir Iqbal
- Department of Rehabilitation Sciences, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh, 11433, Saudi Arabia.
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Poza-Pascual A, Serna-Muñoz C, Pérez-Silva A, Martínez-Beneyto Y, Cabello I, Ortiz-Ruiz AJ. Effects of Fluoride and Calcium Phosphate-Based Varnishes in Children at High Risk of Tooth Decay: A Randomized Clinical Trial. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph181910049. [PMID: 34639351 PMCID: PMC8508447 DOI: 10.3390/ijerph181910049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 09/17/2021] [Accepted: 09/17/2021] [Indexed: 12/19/2022]
Abstract
BACKGROUND The aim of this study was to investigate the effect of the application of two varnishes-MI Varnish (5% sodium fluoride with CPP-ACP) and Clinpro White Varnish (5% sodium fluoride with fTCP)-applied every three months in children with high caries risk for 12 months on plaque indexes, salivary pH, salivary lactic acid and chemical elements concentrations. METHODS We included 58 children aged 4-12 years, assigned to control (placebo), Clinpro and MI groups. Baseline and three-month saliva samples were taken. We assessed changes in pH, lactic acid concentrations and chemical elements in saliva. RESULTS At 12 months, all groups showed a nonsignificant increase in pH levels and a reduction in lactic acid, which was greatest in the placebo group. There was a significant reduction in 24Mg (p = <0.001), 31P (p = 0.033) and 66Zn (p = 0.005) levels in the placebo group (p ≤ 0.05), but not in the other elements studied: 23Na, 27Al, 39K, 44Ca, 52Cr, 55Mn, 57Fe, 59Co, 63Cu, 75As, 111Cd, 137Ba, 208Pb and 19F. CONCLUSIONS Neither pH, lactic acid concentrations or most salivary chemical elements were useful in defining patients at high risk of caries or in monitoring the effect of MI Varnish and Clinpro White Varnish after three-month application for 12 months. However, the appearance of new cavities was stopped, and the hygiene index improved, probably due to hygienic and dietary measures and the use of fluoridated toothpaste. TRIAL REGISTRATION ISRCTN registry, ISRCTN13681286.
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Affiliation(s)
- Andrea Poza-Pascual
- Department of Stomatology I, School of Dentistry, University of the Basque Country, 48940 Lejona, Spain;
| | - Clara Serna-Muñoz
- Department of Integrated Pediatric Dentistry, School of Dentistry, University of Murcia, Biomedical Research Institute of Murcia, 30008 Murcia, Spain; (C.S.-M.); (A.P.-S.); (I.C.); (A.J.O.-R.)
| | - Amparo Pérez-Silva
- Department of Integrated Pediatric Dentistry, School of Dentistry, University of Murcia, Biomedical Research Institute of Murcia, 30008 Murcia, Spain; (C.S.-M.); (A.P.-S.); (I.C.); (A.J.O.-R.)
| | - Yolanda Martínez-Beneyto
- Department of Integrated Pediatric Dentistry, School of Dentistry, University of Murcia, Biomedical Research Institute of Murcia, 30008 Murcia, Spain; (C.S.-M.); (A.P.-S.); (I.C.); (A.J.O.-R.)
- Correspondence:
| | - Inmaculada Cabello
- Department of Integrated Pediatric Dentistry, School of Dentistry, University of Murcia, Biomedical Research Institute of Murcia, 30008 Murcia, Spain; (C.S.-M.); (A.P.-S.); (I.C.); (A.J.O.-R.)
| | - Antonio José Ortiz-Ruiz
- Department of Integrated Pediatric Dentistry, School of Dentistry, University of Murcia, Biomedical Research Institute of Murcia, 30008 Murcia, Spain; (C.S.-M.); (A.P.-S.); (I.C.); (A.J.O.-R.)
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Reddy VR, Devakar S, Chowdhary N, Chaitan SM, Peddi R, Kumar PS. Estimation of Copper Levels in Saliva and Its Relation to Dental Caries and Hemoglobin Levels. Int J Clin Pediatr Dent 2021; 14:235-237. [PMID: 34413598 PMCID: PMC8343687 DOI: 10.5005/jp-journals-10005-1938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Context A very small quantity of trace elements will be present in saliva. Salivary composition influences caries inhibition and promotion based on the different organic, inorganic, and trace elements. Aim and objective To evaluate the levels of copper in saliva in children with caries-active and caries-free group and to associate copper levels of saliva with hemoglobin (Hb) levels of blood. Materials and methods Sixty subjects between the ages of 6 and 14 years were divided into group I—caries-free and group II—caries-active. The caries-active group was further subdivided into group IIa (deft/DMFT < 3) and group IIb (deft/DMFT > 3). To maintain the uniformity of salivary composition, unstimulated saliva (5 mL) was collected in noontime before food from all the participants. The copper levels were estimated by atomic absorption spectrophotometry. Hemoglobin levels in the blood and their relation with copper levels in saliva were estimated. Statistical analysis The results thus obtained were analyzed by t-test and Karl Pearson's correlation coefficient. It was considered significant if the “p” value is 0.05 or less. Results Copper levels were higher in group II showing statistically highly significant results compared with that of group I with p ≤ 0.00001. The results were no significant with respect to Hb scores among the groups. Conclusion A definite positive correlation is seen with dental caries and levels of copper in saliva. Hence, the amount of copper in saliva can be considered as a caries risk assessment tool. How to cite this article Reddy VR, Devakar S, Chowdhary N, et al. Estimation of Copper Levels in Saliva and Its Relation to Dental Caries and Hemoglobin Levels. Int J Clin Pediatr Dent 2021;14(2):235–237.
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Affiliation(s)
- Vundela Rajashekar Reddy
- Department of Pedodontics and Preventive Dentistry, Sri Siddhartha Dental College and Hospital, Sri Siddhartha Academy of Higher Education, Tumkur, Karnataka, India
| | - Shruthi Devakar
- Department of Pedodontics and Preventive Dentistry, Maharashtra Institute of Dental Sciences, Latur, Maharashtra, India
| | - Nagalakshmi Chowdhary
- Department of Pedodontics and Preventive Dentistry, Sri Siddhartha Dental College and Hospital, Sri Siddhartha Academy of Higher Education, Tumkur, Karnataka, India
| | - Sakleshpura Mruthyunjaya Chaitan
- Department of Pedodontics and Preventive Dentistry, Sri Siddhartha Dental College and Hospital, Sri Siddhartha Academy of Higher Education, Tumkur, Karnataka, India
| | - Ravigna Peddi
- Department of Pedodontics and Preventive Dentistry, Sri Siddhartha Dental College and Hospital, Sri Siddhartha Academy of Higher Education, Tumkur, Karnataka, India
| | - Paluvary Sharath Kumar
- Department of Pedodontics and Preventive Dentistry, Sri Siddhartha Dental College and Hospital, Sri Siddhartha Academy of Higher Education, Tumkur, Karnataka, India
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Poletto AC, Singi P, Barri RM, Casanova AA, Garbelini CCD, Silva CCD, Venancio EJ. Relationship of levels of trace elements in saliva and dental caries in preschool children using total reflection X-ray fluorescence technique (TXRF) ⋆. J Trace Elem Med Biol 2021; 63:126663. [PMID: 33069944 DOI: 10.1016/j.jtemb.2020.126663] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 08/31/2020] [Accepted: 09/29/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Considering that studies on the relationship between dental caries and trace elements present contradictory and inconclusive results, the purpose of this study was to determine the levels of salivary trace elements in saliva samples of preschool children and investigate their relationship with dental caries. METHODS In total, 120 samples of unstimulated saliva were collected from children aged 36-72 months, of both sexes, who participate in the preventative educational program in oral health at the State University of Londrina, Brazil. The children were divided into two groups, caries (n = 60) and non-caries (n = 60). Levels of Al, Cu, Fe, Mn, and Zn were analyzed by total reflection X-ray fluorescence (TXRF). Descriptive statistics, the Student's t-test, Mann-Whitney U test, and Pearson's Chi-squared test were performed (P < 0.05). RESULTS The concentrations of Mn and Fe were significantly higher in the caries group (Mn =0.015 mg/L [0.007-0.020]; Fe =0.080 mg/L [0.031-0.239] than the non-caries group (Mn =0.010 mg/L [0.001 - 0.017]; Fe =0.044 mg/L [0.023 - 0.107]). CONCLUSION The results suggest a relationship between trace elements and dental caries, indicating possible involvement of these elements in the metabolism of microorganisms involved in the carious process. In addition, the use of TXRF presented satisfactory results, with a simple and fast methodology for the detection of the studied elements.
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Yamada Y, Watanabe K, Hara S, Saeki K, Maki K. Effects of Zinc, Iron, and Copper on Bovine Enamel Erosion Evaluated Using Transverse Microradiography. Health (London) 2020. [DOI: 10.4236/health.2020.129083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Novo DLR, Mello JE, Rondan FS, Henn AS, Mello PA, Mesko MF. Bromine and iodine determination in human saliva: Challenges in the development of an accurate method. Talanta 2018; 191:415-421. [PMID: 30262078 DOI: 10.1016/j.talanta.2018.08.081] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 08/27/2018] [Accepted: 08/28/2018] [Indexed: 01/24/2023]
Abstract
In this work, an analytical method for bromine and iodine determination in human saliva was proposed. A simple protocol based on centrifugation and direct analysis of supernatant by inductively coupled plasma mass spectrometry (ICP-MS) was investigated. Although this method was feasible for bromine determination, iodine was partially present in the supernatant and an agreement about 54% with reference value was obtained. In addition, microwave-induced combustion (MIC) and microwave-assisted dissolution were also evaluated. Using MIC, 0.2 mL of saliva added on 300 mg of microcrystalline cellulose were efficiently digested. A diluted solution (50 mmol L-1 NH4OH) was used for analytes absorption, and a reflux step of 5 min was applied to ensure quantitative recoveries of Br and I. Accuracy was evaluated by analyte recovery experiments, and recoveries between 94% and 98% were obtained. Microwave-assisted dissolution was evaluated for 2.0 mL of saliva using also a diluted alkaline solution (25 mmol L-1 NH4OH) and a microwave irradiation program of 35 min (including the cooling step). Results for this method agreed with those obtained using MIC. Although MIC has also been appropriated for further determination of Br and I in saliva, microwave-assisted dissolution can be considered a simpler sample preparation method and it was effective for high amount of sample (up to 2.0 mL). Moreover, final solutions were compatible with ICP-MS analysis, allowing the quantification of Br and I in human saliva at ultra-trace concentrations (limits of quantification were 0.052 μg mL-1 for Br and 0.022 μg mL-1 for I).
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Affiliation(s)
- Diogo La Rosa Novo
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, 96160-000 Capão do Leão, RS, Brazil
| | - Julia Eisenhardt Mello
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, 96160-000 Capão do Leão, RS, Brazil
| | - Filipe Soares Rondan
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, 96160-000 Capão do Leão, RS, Brazil
| | | | - Paola Azevedo Mello
- Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria, RS, Brazil
| | - Marcia Foster Mesko
- Centro de Ciências Químicas, Farmacêuticas e de Alimentos, Universidade Federal de Pelotas, 96160-000 Capão do Leão, RS, Brazil.
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Assessment of saliva, hair and toenails as biomarkers of low level exposure to manganese from drinking water in children. Neurotoxicology 2018; 64:126-133. [DOI: 10.1016/j.neuro.2017.08.011] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Revised: 08/04/2017] [Accepted: 08/29/2017] [Indexed: 12/20/2022]
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Zamani Pozveh E, Seif A, Ghalayani P, Maleki A, Mottaghi A. The effect of mustard gas on salivary trace metals (Zn, Mn, Cu, Mg, Mo, Sr, Cd, Ca, Pb, Rb). PLoS One 2015; 10:e0126162. [PMID: 25965704 PMCID: PMC4428796 DOI: 10.1371/journal.pone.0126162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Accepted: 03/03/2015] [Indexed: 11/19/2022] Open
Abstract
We have determined and compared trace metals concentration in saliva taken from chemical warfare injures who were under the exposure of mustard gas and healthy subjects by means of inductively coupled plasma optical emission spectroscopy (ICP-OES) for the first time. The influence of preliminary operations on the accuracy of ICP-OES analysis, blood contamination, the number of restored teeth in the mouth, salivary flow rate, and daily variations in trace metals concentration in saliva were also considered. Unstimulated saliva was collected at 10:00-11:00 a.m. from 45 subjects in three equal groups. The first group was composed of 15 healthy subjects (group 1); the second group consisted of 15 subjects who, upon chemical warfare injuries, did not use Salbutamol spray, which they would have normally used on a regular basis (group 2); and the third group contained the same number of patients as the second group, but they had taken their regular medicine (Salbutamol spray; group 3). Our results showed that the concentration of Cu in saliva was significantly increased in the chemical warfare injures compared to healthy subjects, as follows: healthy subjects 15.3± 5.45 (p.p.b.), patients (group 2) 45.77±13.65, and patients (Salbutamol spray; group 3) 29 ±8.51 (P <0.02). In contrast, zinc was significantly decreased in the patients, as follows: healthy subjects 37 ± 9.03 (p.p.b.), patients (group 2) 12.2 ± 3.56, and patients (Salbutamol spray; group 3) 20.6 ±10.01 (P < 0.01). It is important to note that direct dilution of saliva samples with ultrapure nitric acid showed the optimum ICP-OES outputs.
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Affiliation(s)
- Elham Zamani Pozveh
- Department of Oral Medicine, Dental School Faculty, Khorasgan (Isfahan) Branch, Islamic Azad University, Isfahan, Iran
| | - Ahmad Seif
- Department of Chemistry, Boroujerd Branch, Islamic Azad University, Boroujerd, Lorestan, Iran
| | - Parichehr Ghalayani
- Department of Oral Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Abbas Maleki
- Department of Chemistry, Boroujerd Branch, Islamic Azad University, Boroujerd, Lorestan, Iran
| | - Ahmad Mottaghi
- Department of Oral and Maxillofacial Surgery, Dental School Faculty, Khorasgan (Isfahan) Branch, Islamic Azad University, Isfahan, Iran
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Xu Y, Itzek A, Kreth J. Comparison of genes required for H2O2 resistance in Streptococcus gordonii and Streptococcus sanguinis. MICROBIOLOGY-SGM 2014; 160:2627-2638. [PMID: 25280752 DOI: 10.1099/mic.0.082156-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Hydrogen peroxide (H2O2) is produced by several members of the genus Streptococcus mainly through the pyruvate oxidase SpxB under aerobic growth conditions. The acute toxic nature of H2O2 raises the interesting question of how streptococci cope with intrinsically produced H2O2, which subsequently accumulates in the microenvironment and threatens the closely surrounding population. Here, we investigate the H2O2 susceptibility of oral Streptococcus gordonii and Streptococcus sanguinis and elucidate potential mechanisms of how they protect themselves from the deleterious effect of H2O2. Both organisms are considered primary colonizers and occupy the same intraoral niche making them potential targets for H2O2 produced by other species. We demonstrate that S. gordonii produces relatively more H2O2 and has a greater ability for resistance to H2O2 stress. Functional studies show that, unlike in Streptococcus pneumoniae, H2O2 resistance is not dependent on a functional SpxB and confirms the important role of the ferritin-like DNA-binding protein Dps. However, the observed increased H2O2 resistance of S. gordonii over S. sanguinis is likely to be caused by an oxidative stress protection machinery present even under anaerobic conditions, while S. sanguinis requires a longer period of time for adaptation. The ability to produce more H2O2 and be more resistant to H2O2 might aid S. gordonii in the competitive oral biofilm environment, since it is lower in abundance yet manages to survive quite efficiently in the oral biofilm.
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Affiliation(s)
- Yifan Xu
- Department of Surgical Oncology, The First Hospital of China Medical University, Shenyang, PR China.,Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Andreas Itzek
- Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jens Kreth
- College of Dentistry, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA.,Department of Microbiology and Immunology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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14
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Viana GFDS, de Carvalho CF, Nunes LS, Rodrigues JLG, Ribeiro NS, de Almeida DA, Ferreira JRD, Abreu N, Menezes-Filho JA. Noninvasive biomarkers of manganese exposure and neuropsychological effects in environmentally exposed adults in Brazil. Toxicol Lett 2014; 231:169-78. [PMID: 24992226 DOI: 10.1016/j.toxlet.2014.06.018] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Revised: 05/01/2014] [Accepted: 06/10/2014] [Indexed: 12/15/2022]
Abstract
Manganese (Mn), an essential element to humans, in excess can cause neurotoxic damage. So far, Mn exposure assessment has no ideal biomarker. This study aims to investigate the association between Mn exposure, using noninvasive biomarkers, and neuropsychological effects in environmentally exposed adults. The residents of two communities near to a ferromanganese refinery in Bahia, Brazil were evaluated. Volunteers aged 15-55 of both sexes provided scalp hair, axillary hair, fingernail and saliva specimens for Mn determination by electrothermal absorption spectrometry. Several neuropsychological tests were used to evaluate cognitive, attention, memory, motor and executive functions. Significant correlations were observed between Mn in hair (MnH, median 8.95 μg/g), axillary hair (MnAxH,18.49 μg/g) and fingernail (MnFN, 6.91 μg/g) with the performances in several neuropsychological tests. No association was observed between manganese levels in saliva (MnSal, 4.2 μg/L) and any neuropsychological function. Multiple regression analysis detected an inverse association between Log MnH and IQ (β=-4.76 [CI 95% -9.17 to -0.36]) and between Log MnFN and visual working memory (β=-3.33 [CI 95% -6.15 to -0.52]). Direct association was observed between Log MnFN and time of completion in the cognitive flexibility task (β=56.29 [CI 95% 2.41-110.18]). The Mn biomonitoring using noninvasive biomarkers was able to detect high exposure levels, which were associated with detrimental neuropsychological effects in adults exposed to industrial emissions.
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Affiliation(s)
| | - Chrissie F de Carvalho
- Graduate Program in Psychology, Institute of Psychology, Federal University of Bahia, Brazil
| | - Lorena S Nunes
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Brazil
| | - Juliana L G Rodrigues
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Brazil
| | - Nathália S Ribeiro
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Brazil
| | - Diego A de Almeida
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Brazil
| | | | - Neander Abreu
- Graduate Program in Psychology, Institute of Psychology, Federal University of Bahia, Brazil
| | - José A Menezes-Filho
- Graduate Program in Pharmacy, College of Pharmacy, Federal University of Bahia, Brazil.
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15
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Michalke B, Rossbach B, Göen T, Schäferhenrich A, Scherer G. Saliva as a matrix for human biomonitoring in occupational and environmental medicine. Int Arch Occup Environ Health 2014; 88:1-44. [DOI: 10.1007/s00420-014-0938-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 02/20/2014] [Indexed: 01/20/2023]
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16
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Mitchell E, Frisbie S, Sarkar B. Exposure to multiple metals from groundwater-a global crisis: geology, climate change, health effects, testing, and mitigation. Metallomics 2011; 3:874-908. [PMID: 21766119 DOI: 10.1039/c1mt00052g] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This paper presents an overview of the global extent of naturally occurring toxic metals in groundwater. Adverse health effects attributed to the toxic metals most commonly found in groundwater are reviewed, as well as chemical, biochemical, and physiological interactions between these metals. Synergistic and antagonistic effects that have been reported between the toxic metals found in groundwater and the dietary trace elements are highlighted, and common behavioural, cultural, and dietary practices that are likely to significantly modify health risks due to use of metal-contaminated groundwater are reviewed. Methods for analytical testing of samples containing multiple metals are discussed, with special attention to analytical interferences between metals and reagents. An overview is presented of approaches to providing safe water when groundwater contains multiple metallic toxins.
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17
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Watanabe K, Tanaka T, Shigemi T, Saeki K, Fujita Y, Morikawa K, Nakashima H, Takahashi S, Watanabe S, Maki K. Al and Fe levels in mixed saliva of children related to elution behavior from teeth and restorations. J Trace Elem Med Biol 2011; 25:143-8. [PMID: 21684131 DOI: 10.1016/j.jtemb.2011.05.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Revised: 02/21/2011] [Accepted: 05/02/2011] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The levels of trace elements in mixed saliva were not well-defined. This study was performed to determine Al and Fe concentrations in mixed saliva of children and to investigate the relationship between these levels and dental caries. METHODS Among 562 collected mixed saliva specimens, 514 and 548 samples for analyses of Al and Fe levels were obtained, respectively. The Al and Fe concentrations were determined using flameless atomic absorption spectrometry. RESULTS The Al and Fe concentrations in children without a history of caries were 0.093±0.136 and 0.121±0.128 μg/mL, respectively. The Fe level depended on sex. The Fe level in girls who experienced caries was significantly higher than that without caries history. The Al and Fe levels were significantly higher in children with treated caries than children without caries history. The Fe concentrations were affected by restoration type. Composite resin increased the Fe level significantly especially in girls, and the Fe level was also higher in boys treated with both composite resin and metal restorations. In children without caries history, the Al level was inversely proportional to the number of deciduous teeth and increased with the number of permanent teeth. In contrast, the Fe level showed the reverse tendency. CONCLUSIONS The Fe level in mixed saliva of children was influenced by the restoration type. It was suggested that Al was eluted more from sound permanent teeth than sound deciduous teeth, while Fe was eluted in the opposite manner.
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Affiliation(s)
- Koji Watanabe
- Division of Pediatric Dentistry, Department of Human Development and Fostering, Meikai University School of Dentistry, 1-1 Keyakidai, Sakado City, 350-0283, Japan
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