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Niklas AA, Borge GIA, Rødbotten R, Berget I, Müller MHB, Herrmann SS, Granby K, Kirkhus B. Levels of nitrate, nitrite and nitrosamines in model sausages during heat treatment and in vitro digestion - The impact of adding nitrite and spinach (Spinacia oleracea L.). Food Res Int 2023; 166:112595. [PMID: 36914322 DOI: 10.1016/j.foodres.2023.112595] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 01/20/2023] [Accepted: 02/14/2023] [Indexed: 02/25/2023]
Abstract
Nitrite derivatives react with endogenous precursors forming N-nitrosamines associated with development of colorectal cancer. The present study aims to investigate the formation of N-nitrosamines in sausage during processing and in vitro gastrointestinal digestion after adding sodium nitrite and/or spinach emulsion. The INFOGEST digestion protocol was used to simulate the oral, gastric, and small intestinal phases of digestion, and sodium nitrite was added in the oral phase to mimic the input of nitrite from saliva as it has shown to affect the endogenous formation of N-nitrosamines. The results show that the addition of spinach emulsion, in spite of it being a source of nitrate, did not affect the nitrite content in either batter, sausage, or roasted sausage. The levels of N-nitrosamines increased with the added amount of sodium nitrite, and further formation of some volatile N-nitrosamines was observed during roasting and in vitro digestion. In general, N-nitrosamine levels in the intestinal phase followed the same trend as in the undigested products. The results further indicate that nitrite present in saliva may cause a significant increase in N-nitrosamine levels in the gastrointestinal tract and that bioactive components in spinach may protect against the formation of volatile N-nitrosamines both during roasting and digestion.
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Affiliation(s)
- Agnieszka A Niklas
- Technical University of Denmark, National Food Institute, DK-2800 Kgs. Lyngby, Denmark.
| | - Grethe Iren A Borge
- Nofima AS, Norwegian Institute of Food, Fisheries and Aquaculture Research, NO-1433 Ås, Norway
| | - Rune Rødbotten
- Nofima AS, Norwegian Institute of Food, Fisheries and Aquaculture Research, NO-1433 Ås, Norway
| | - Ingunn Berget
- Nofima AS, Norwegian Institute of Food, Fisheries and Aquaculture Research, NO-1433 Ås, Norway
| | - Mette H B Müller
- Norwegian University of Life Sciences, Faculty of Veterinary Medicine, NO-1430 Ås, Norway
| | - Susan S Herrmann
- Technical University of Denmark, National Food Institute, DK-2800 Kgs. Lyngby, Denmark
| | - Kit Granby
- Technical University of Denmark, National Food Institute, DK-2800 Kgs. Lyngby, Denmark
| | - Bente Kirkhus
- Nofima AS, Norwegian Institute of Food, Fisheries and Aquaculture Research, NO-1433 Ås, Norway
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Khan EA, Grønnestad R, Krøkje Å, Bartosov Z, Johanson SM, Müller MHB, Arukwe A. Alteration of hepato-lipidomic homeostasis in A/J mice fed an environmentally relevant PFAS mixture. Environ Int 2023; 173:107838. [PMID: 36822005 DOI: 10.1016/j.envint.2023.107838] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 11/22/2022] [Revised: 01/19/2023] [Accepted: 02/16/2023] [Indexed: 06/18/2023]
Abstract
In the present study, we have investigated liver lipid homeostasis and corresponding changes in transcript and functional product levels in A/J mice exposed to environmental relevant concentration of per- and polyfluoroalkyl substances (PFAS) mixture. Mice were fed environmentally relevant concentrations of a PFAS mixture during a period of 10 weeks. The concentrations of the 8 individual PFAS in the mixture were chosen based on measured concentrations in earthworms at a Norwegian skiing area. Our data show high liver accumulation of ∑PFAS in exposed mice, which paralleled significant elevation in body weight and hepatosomatic index (HSI) of male mice. UPC2 -MS/MS analysis in both positive and negative mode, respectively, indicated significant differences between control and exposure groups in the liver of exposed mice. Principal component analysis (PCA) of the features revealed separation of control and exposure groups in both sexes. From the significantly differential 207 lipids, only 72 were identified and shown to belong to eight different lipid classes. PCA of fatty acids (FAs) profile showed a clear separation between control and PFAS exposure groups in both female and male mice, with differential abundant levels of 5 and 4 hydrolyzed FAs, respectively. Transcript and protein analysis of genes associated with lipid homeostasis (ppar-α and β, lxr-α and β, rxr, fasn and srebp) showed that PFAS exposure produced sex- and individual response related alterations. Glutathione reductase (Gr) activity showed exposure-related changes in both female and male mice, compared with controls. Overall, the present study has demonstrated changes in lipid metabolism after PFAS exposure, showing that PFAS accumulation in the liver resulted to hepatotoxic effects, potential interference with membrane lipid profile and homeostasis, and oxidative stress. Given the structural similarity with FAs, interaction between PFAS and nuclear receptors such as PPARs may have severe consequences for general health and physiology in exposed animals and humans.
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Affiliation(s)
- Essa A Khan
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Randi Grønnestad
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Åse Krøkje
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Zdenka Bartosov
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Silje Modahl Johanson
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Mette H B Müller
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Augustine Arukwe
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway.
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Sørhus E, Donald CE, Nakken CL, Perrichon P, Durif CMF, Shema S, Browman HI, Skiftesvik AB, Lie KK, Rasinger JD, Müller MHB, Meier S. Co-exposure to UV radiation and crude oil increases acute embryotoxicity and sublethal malformations in the early life stages of Atlantic haddock (Melanogrammus aeglefinus). Sci Total Environ 2023; 859:160080. [PMID: 36375555 DOI: 10.1016/j.scitotenv.2022.160080] [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: 08/29/2022] [Revised: 10/28/2022] [Accepted: 11/05/2022] [Indexed: 06/16/2023]
Abstract
Crude oil causes severe abnormalities in developing fish. Photomodification of constituents in crude oil increases its toxicity several fold. We report on the effect of crude oil, in combination with ultraviolet (UV) radiation, on Atlantic haddock (Melanogrammus aeglefinus) embryos. Accumulation of crude oil on the eggshell makes haddock embryos particularly susceptible to exposure. At high latitudes, they can be exposed to UV radiation many hours a day. Haddock embryos were exposed to crude oil (5-300 μg oil/L nominal loading concentrations) for three days in the presence and absence of UV radiation (290-400 nm). UV radiation partly degraded the eggs' outer membrane resulting in less accumulation of oil droplets in the treatment with highest oil concentration (300 μg oil/L). The co-exposure treatments resulted in acute toxicity, manifested by massive tissue necrosis and subsequent mortality, reducing LC50 at hatching stage by 60 % to 0.24 μg totPAH/L compared to 0.62 μg totPAH/L in crude oil only. In the treatment with nominal low oil concentrations (5-30 μg oil/L), only co-exposure to UV led to sublethal morphological heart defects. Including phototoxicity as a parameter in risk assessments of accidental oil spills is recommended.
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Affiliation(s)
- Elin Sørhus
- Institute of Marine Research, Marine Toxicology Group, Nordnesgaten 50, 5005 Bergen, Norway.
| | - Carey E Donald
- Institute of Marine Research, Marine Toxicology Group, Nordnesgaten 50, 5005 Bergen, Norway
| | - Charlotte L Nakken
- University of Bergen, Department of Chemistry, Allégaten 41, 5020 Bergen, Norway
| | - Prescilla Perrichon
- Institute of Marine Research, Reproduction and Developmental Biology, Austevoll Research Station, Sauganeset 16, 5392 Storebø, Norway
| | - Caroline M F Durif
- Institute of Marine Research, Ecosystem Acoustics Group, Austevoll Research Station, Sauganeset 16, 5392 Storebø, Norway
| | - Steven Shema
- Grótti ehf, Melabraut 22, 220 Hafnarfirði, Iceland
| | - Howard I Browman
- Institute of Marine Research, Ecosystem Acoustics Group, Austevoll Research Station, Sauganeset 16, 5392 Storebø, Norway
| | - Anne Berit Skiftesvik
- Institute of Marine Research, Ecosystem Acoustics Group, Austevoll Research Station, Sauganeset 16, 5392 Storebø, Norway
| | - Kai K Lie
- Institute of Marine Research, Marine Toxicology Group, Nordnesgaten 50, 5005 Bergen, Norway
| | - Josef D Rasinger
- Institute of Marine Research, Marine Toxicology Group, Nordnesgaten 50, 5005 Bergen, Norway
| | - Mette H B Müller
- Norwegian University of Life Sciences, Section for Experimental Biomedicine, Universitetstunet 3, 1433 Ås, Norway
| | - Sonnich Meier
- Institute of Marine Research, Marine Toxicology Group, Nordnesgaten 50, 5005 Bergen, Norway
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Jansen A, Aaseth JO, Lyche JL, Berg JP, Müller MHB, Lydersen S, Farup PG. Do changes in persistent organic pollutants after bariatric surgery cause endocrine disruption? Chemosphere 2023; 313:137461. [PMID: 36470361 DOI: 10.1016/j.chemosphere.2022.137461] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [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: 09/26/2022] [Revised: 11/22/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Bariatric surgery results in weight loss, marked endocrine changes and the release of persistent organic pollutants (POPs). The release of POPs might cause endocrine disruption. The study aimed to explore associations between POPs and adiponectin, leptin and ghrelin in subjects undergoing bariatric surgery. METHODS The study included 63 subjects with severe obesity (men/women: 13/50), age (years): 45.0 (8.5), and BMI (kg/m2) 39.1 (3.4). Analyses of adiponectin, leptin and ghrelin and POPs (hexachlorobenzene (HCB), dichlorodiphenyldichloroethylene (p,p'-DDE), polychlorinated biphenyl (PCB) 118 (dioxin-like compound; dl), and sum 6 PCB (PCB 28, -52, -101, -138, -153, and -180) were performed before and 12 months after bariatric surgery. RESULTS There were significant increases in adiponectin and all POPs and a fall in leptin after surgery. The main finding was the highly significant associations between adiponectin and all POPs. The increase in HCB explained 38% of the variation in adiponectin. CONCLUSIONS If the POP-associated increase in adiponectin is a causal effect, the release of POPs might have important clinical consequences. Adiponectin has both positive and negative clinical effects exerted by essentially unknown mechanisms. The effects of released POPs on the metabolic functions in subjects undergoing bariatric surgery deserve further evaluation.
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Affiliation(s)
- Aina Jansen
- Department of Surgery, Innlandet Hospital Trust, N-2819 Gjøvik, Norway
| | - Jan O Aaseth
- Department of Research, Innlandet Hospital Trust, N-2381Brumunddal, Norway; Faculty of Health and Social Sciences, Inland Norway University of Applied Sciences, N-2418 Elverum, Norway
| | - Jan L Lyche
- Department of Paraclinical Sciences, Norwegian University of Life Sciences (NMBU), N-1433 Ås, Norway
| | - Jens P Berg
- Department of Medical Biochemistry, Oslo University Hospital, N-0450 Oslo, Norway; Institute of Clinical Medicine, University of Oslo, N-0316 Oslo, Norway
| | - Mette H B Müller
- Section for Experimental Biomedicine, Norwegian University of Life Sciences (NMBU), N-1433 Ås, Norway
| | - Stian Lydersen
- Regional Centre for Child and Youth Mental Health and Child Welfare, Department of Mental Health, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
| | - Per G Farup
- Department of Research, Innlandet Hospital Trust, N-2381Brumunddal, Norway; Department of Clinical and Molecular Medicine, Faculty of Medicine and Health Sciences, Norwegian University of Science and Technology, N-7491Trondheim, Norway.
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Strømmen K, Lyche JL, Moltu SJ, Müller MHB, Blakstad EW, Brække K, Sakhi AK, Thomsen C, Nakstad B, Rønnestad AE, Drevon CA, Iversen PO. Estimated daily intake of phthalates, parabens, and bisphenol A in hospitalised very low birth weight infants. Chemosphere 2022; 309:136687. [PMID: 36206919 DOI: 10.1016/j.chemosphere.2022.136687] [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: 06/11/2022] [Revised: 09/18/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Very low birth weight infants (VLBW, birth weight (BW) < 1500 g) are exposed to phthalates, parabens and bisphenol A (BPA) early in life. We estimated daily intake (EDI) of these excipients in 40 VLBW infants the first and fifth week of life while hospitalised. Based on urinary samples collected in 2010, EDI was calculated and compared to the tolerable daily intake (TDI) with hazard quotients (HQs) evaluated. A HQ > 1 indicates that EDI exceeded TDI with increased risk of adverse health effects. EDI was higher in VLBW infants compared to term-born infants and older children. VLBW infants born at earlier gestational age (GA), or with lower BW, had higher EDI than infants born at later GA or with higher BW. First week median EDI for BPA was higher than TDI in 100% of infants, in 75% for di(2-ethylhexyl) phthalate (DEHP), 90% for the sum of butyl benzyl phthalate (BBzP), di-n-butyl phthalate (DnBP), DEHP and di-iso-nonyl phthalate (DiNP) = ∑BBzP+DnBP+DEHP+DiNP, and in 50% of infants for propylparaben (PrPa), indicating increased risk of adverse effects. Fifth week EDI remained higher than TDI in all infants for BPA, in 75% for DEHP and ∑BBzP+DnBP+DEHP+DiNP, and 25% of infants for PrPa, indicating prolonged risk. Maximum EDI for di-iso-butyl phthalate was higher than TDI suggesting risk of adverse effects at maximum exposure. VLBW infants born earlier than 28 weeks GA had higher EDI, above TDI, for PrPa compared to infants born later than 28 weeks GA. Infants with late-onset septicaemia (LOS) had higher EDI for DEHP, ∑BBzP+DnBP+DEHP+DiNP and BPA, above TDI, compared to infants without LOS. More 75% of the infants' EDI for DEHP and ∑BBzP+DnBP+DEHP+DiNP, 25% for PrPa, and 100% of infants' EDI for BPA, were above TDI resulting in HQs > 1, indicating increased risk of adverse health effects.
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Affiliation(s)
- Kenneth Strømmen
- Division of Paediatric and Adolescent Medicine, Department of Neonatal Intensive Care, Rikshospitalet, Oslo University Hospital, Norway.
| | - Jan Ludvig Lyche
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Science, Oslo, Norway
| | - Sissel Jennifer Moltu
- Division of Paediatric and Adolescent Medicine, Department of Neonatal Intensive Care, Ullevål, Oslo University Hospital, Norway
| | - Mette H B Müller
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Science, Oslo, Norway
| | - Elin Wahl Blakstad
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway
| | - Kristin Brække
- Division of Paediatric and Adolescent Medicine, Department of Neonatal Intensive Care, Ullevål, Oslo University Hospital, Norway
| | | | | | - Britt Nakstad
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway; Division of Paediatric and Adolescent Medicine, Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Norway
| | - Arild Erlend Rønnestad
- Division of Paediatric and Adolescent Medicine, Department of Neonatal Intensive Care, Rikshospitalet, Oslo University Hospital, Norway; Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, Norway
| | - Christian A Drevon
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway
| | - Per Ole Iversen
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway; Department of Haematology, Oslo University Hospital, Norway
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Grønnestad R, Johanson SM, Müller MHB, Schlenk D, Tanabe P, Krøkje Å, Jaspers VLB, Jenssen BM, Ræder EM, Lyche JL, Shi Q, Arukwe A. Effects of an environmentally relevant PFAS mixture on dopamine and steroid hormone levels in exposed mice. Toxicol Appl Pharmacol 2021; 428:115670. [PMID: 34371090 DOI: 10.1016/j.taap.2021.115670] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/13/2022]
Abstract
In the present study, we investigated the dopaminergic and steroid hormone systems of A/J mice fed environmentally relevant concentrations of a perfluoroalkyl substance (PFAS) mixture over a period of 10 weeks. The PFAS mixture was chosen based on measured PFAS concentrations in earthworms at a Norwegian skiing area (Trondheim) and consisted of eight different PFAS. Dietary exposure to PFAS led to lower total brain dopamine (DA) concentrations in male mice, as compared to control. On the transcript level, brain tyrosine hydroxylase (th) of PFAS exposed males was reduced, compared to the control group. No significant differences were observed on the transcript levels of enzymes responsible for DA metabolism, namely - monoamine oxidase (maoa and maob) and catechol-O methyltransferase (comt). We detected increased transcript level for DA receptor 2 (dr2) in PFAS exposed females, while expression of DA receptor 1 (dr1), DA transporter (dat) and vesicular monoamine transporter (vmat) were not affected by PFAS exposure. Regarding the steroid hormones, plasma and muscle testosterone (T), 11-ketotestosterone (11-KT) and 17β-estradiol (E2) levels, as well as transcripts for estrogen receptors (esr1 and esr2), gonadotropin releasing hormone (gnrh) and aromatase (cyp19) were unaltered by the PFAS treatment. These results indicate that exposure to PFAS doses, comparable to previous observation in earthworms at a Norwegian skiing area, may alter the dopaminergic system of mice with overt consequences for health, general physiology, cognitive behavior, reproduction and metabolism.
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Affiliation(s)
- Randi Grønnestad
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway.
| | - Silje Modahl Johanson
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Mette H B Müller
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, Oslo, Norway; Department of Paraclinical Sciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Daniel Schlenk
- Department of Environmental Sciences, University of California, Riverside, California, USA
| | - Philip Tanabe
- Department of Environmental Sciences, University of California, Riverside, California, USA
| | - Åse Krøkje
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Veerle L B Jaspers
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Bjørn Munro Jenssen
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway; Department of Biosciences, Aarhus University, Roskilde, Denmark
| | - Erik M Ræder
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Jan L Lyche
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, Oslo, Norway
| | - Qingyang Shi
- Department of Environmental Sciences, University of California, Riverside, California, USA
| | - Augustine Arukwe
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
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Strømmen K, Lyche JL, Moltu SJ, Müller MHB, Blakstad EW, Almaas AN, Sakhi AK, Thomsen C, Nakstad B, Rønnestad AE, Drevon CA, Iversen PO. Corrigendum to "High urinary concentrations of parabens and bisphenol A in very low birth weight infants" [Chemosphere 271 (2021) 129570]. Chemosphere 2021; 275:130613. [PMID: 33931266 DOI: 10.1016/j.chemosphere.2021.130613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Affiliation(s)
- Kenneth Strømmen
- Department of Neonatal Intensive Care, Division of Paediatric and Adolescent Medicine, Rikshospitalet, Oslo University Hospital, Norway; Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway.
| | - Jan Ludvig Lyche
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Science, Oslo, Norway
| | - Sissel Jennifer Moltu
- Department of Neonatal Intensive Care, Division of Paediatric and Adolescent Medicine, Ullevål, Oslo University Hospital, Norway
| | - Mette H B Müller
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Science, Oslo, Norway
| | - Elin Wahl Blakstad
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway
| | - Astrid Nylander Almaas
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway
| | | | | | - Britt Nakstad
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway
| | - Arild Erlend Rønnestad
- Department of Neonatal Intensive Care, Division of Paediatric and Adolescent Medicine, Rikshospitalet, Oslo University Hospital, Norway; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Norway
| | - Christian A Drevon
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway
| | - Per Ole Iversen
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway; Department of Haematology, Oslo University Hospital, Norway
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8
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Strømmen K, Lyche JL, Moltu SJ, Müller MHB, Blakstad EW, Almaas AN, Sakhi AK, Thomsen C, Nakstad B, Rønnestad AE, Drevon CA, Iversen PO. High urinary concentrations of parabens and bisphenol A in very low birth weight infants. Chemosphere 2021; 271:129570. [PMID: 33453489 DOI: 10.1016/j.chemosphere.2021.129570] [Citation(s) in RCA: 3] [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: 09/01/2020] [Revised: 12/12/2020] [Accepted: 01/04/2021] [Indexed: 06/12/2023]
Abstract
Very low birth weight infants (VLBW; birth weight < 1500 g) are treated with pharmaceuticals and medical equipment containing parabens and bisphenol A (BPA). Parabens are used in pharmaceuticals, whereas BPA in medical equipment where concentrations are rarely reported in hospitalised VLBW infants. We measured urinary concentrations of parabens and BPA and hypothesised high and increasing concentrations in infants born at lower gestational ages (GAs), and among infants with bronchopulmonary dysplasia (BPD) and late-onset septicaemia (LOS) due to higher exposure from pharmaceuticals and medical equipment. Urinary samples were collected during the first (n = 38) and fifth (n = 36) week of life. Methylparaben, ethylparaben, propylparaben, butylparaben, and BPA concentrations were measured using ultra high-performance liquid chromatography coupled to tandem mass spectrometry. VLBW infants had very high urinary concentrations of parabens and BPA compared to term infants and older children. The Σ paraben concentration was higher than detected in previous studies on premature infants. Lower GA at birth was associated with higher concentrations of parabens and BPA. Infants born before 28 weeks GA had higher first week concentrations of propylparaben (38.6 vs. 9.05 ng/mL, p = 0.007), butylparaben (0.28 vs. 0.09 ng/mL, p = 0.05) and fifth week concentrations of BPA (15.1 vs. 6.02 ng/mL, p = 0.02) than infants born after 28 weeks GA. Infants with LOS and BPD had higher fifth week concentrations of BPA than infants without LOS and BPD (LOS: 14.2 vs. 6.77 ng/mL, p = 0.07; BPD: 18.6 vs. 7.62 ng/mL, p = 0.05).
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Affiliation(s)
- Kenneth Strømmen
- Department of Neonatal Intensive Care, Division of Paediatric and Adolescent Medicine, Rikshospitalet, Oslo University Hospital, Norway; Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway.
| | - Jan Ludvig Lyche
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Science, Oslo, Norway
| | - Sissel Jennifer Moltu
- Department of Neonatal Intensive Care, Division of Paediatric and Adolescent Medicine, Ullevål, Oslo University Hospital, Norway
| | - Mette H B Müller
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Science, Oslo, Norway
| | - Elin Wahl Blakstad
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway
| | - Astrid Nylander Almaas
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway
| | | | | | - Britt Nakstad
- Department of Pediatric and Adolescent Medicine, Akershus University Hospital and Institute for Clinical Medicine, Campus Ahus, University of Oslo, Nordbyhagen, Norway
| | - Arild Erlend Rønnestad
- Department of Neonatal Intensive Care, Division of Paediatric and Adolescent Medicine, Rikshospitalet, Oslo University Hospital, Norway; Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Norway
| | - Christian A Drevon
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway
| | - Per Ole Iversen
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Norway; Department of Haematology, Oslo University Hospital, Norway
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9
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Johanson SM, Swann JR, Umu ÖCO, Aleksandersen M, Müller MHB, Berntsen HF, Zimmer KE, Østby GC, Paulsen JE, Ropstad E. Maternal exposure to a human relevant mixture of persistent organic pollutants reduces colorectal carcinogenesis in A/J Min/+ mice. Chemosphere 2020; 252:126484. [PMID: 32199166 DOI: 10.1016/j.chemosphere.2020.126484] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 01/24/2020] [Revised: 03/10/2020] [Accepted: 03/12/2020] [Indexed: 06/10/2023]
Abstract
An increased risk of developing colorectal cancer has been associated with exposure to persistent organic pollutants (POPs) and alteration in the gut bacterial community. However, there is limited understanding about the impact of maternal exposure to POPs on colorectal cancer and gut microbiota. This study characterized the influence of exposure to a human relevant mixture of POPs during gestation and lactation on colorectal cancer, intestinal metabolite composition and microbiota in the A/J Min/+ mouse model. Surprisingly, the maternal POP exposure decreased colonic tumor burden, as shown by light microscopy and histopathological evaluation, indicating a restriction of colorectal carcinogenesis. 1H nuclear magnetic resonance spectroscopy-based metabolomic analysis identified alterations in the metabolism of amino acids, lipids, glycerophospholipids and energy in intestinal tissue. In addition, 16S rRNA sequencing of gut microbiota indicated that maternal exposure modified fecal bacterial composition. In conclusion, the results showed that early-life exposure to a mixture of POPs reduced colorectal cancer initiation and promotion, possibly through modulation of the microbial and biochemical environment. Further studies should focus on the development of colorectal cancer after combined maternal and dietary exposures to environmentally relevant low-dose POP mixtures.
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Affiliation(s)
- Silje M Johanson
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Jonathan R Swann
- Department of Metabolism, Digestion and Reproduction, Faculty of Medicine, Imperial College London, SW7 2AZ, United Kingdom.
| | - Özgün C O Umu
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Mona Aleksandersen
- Department of Preclinical Sciences and Pathology, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Mette H B Müller
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Hanne F Berntsen
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway; National Institute of Occupational Health, P.O. Box 5330 Majorstuen, NO-0304, Oslo, Norway.
| | - Karin E Zimmer
- Department of Preclinical Sciences and Pathology, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Gunn C Østby
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Jan E Paulsen
- Department of Paraclinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
| | - Erik Ropstad
- Department of Production Animal Clinical Sciences, Norwegian University of Life Sciences, P.O. Box 369 Sentrum, NO-0102, Oslo, Norway.
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Jansen A, Müller MHB, Grønnestad R, Klungsøyr O, Polder A, Skjerve E, Aaseth J, Lyche JL. Decreased plasma levels of perfluoroalkylated substances one year after bariatric surgery. Sci Total Environ 2019; 657:863-870. [PMID: 30677951 DOI: 10.1016/j.scitotenv.2018.11.453] [Citation(s) in RCA: 5] [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: 10/01/2018] [Revised: 11/24/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
Per- and polyfluoroalkylated substances (PFASs) are classified as persistent organic pollutants (POPs), and known to be protein bound. The aim of the present study was to determine the levels of 17 different PFASs before and one year after bariatric surgery, and to assess whether weight loss and changed serum protein concentrations could be influencing factors. Plasma samples from 63 patients were analyzed for nine perfluoroalkyl carboxylic acids (PFCAs), three perfluoroalkane sulfonic acids (PFSAs), and five perfluoroalkyl sulfonamide based substances (PASF) before and after surgery. Protein determination was performed in the corresponding serum samples. Mean weight loss one year after surgery was 32.1 kg. The plasma levels of all PFASs decreased with 4-34% compared to preoperative values, and included perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), perfluoroundecanoic acid (PFUnDA), and perfluorobutane sulfonate (PFBS), which have been identified with increasing levels in the general population during recent years. Serum protein concentrations also decreased with 7-8%. Although protein levels were positively correlated with PFOA, PFBS, PFHxS and PFOS, regression analysis revealed that neither weight loss nor reductions in concentrations of serum protein could explain the decreased PFAS levels. The type of surgical procedure did not influence the changes of PFAS levels between the two sample points. A reduced food intake and alterations in absorptions of nutrients after bariatric surgery may have influenced the observed decreasing plasma levels of PFASs.
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Affiliation(s)
- Aina Jansen
- Department of Surgery, Innlandet Hospital Trust, Gjøvik, Norway; Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Oslo, Norway.
| | - Mette H B Müller
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Randi Grønnestad
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Oslo, Norway; Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Ole Klungsøyr
- Oslo Centre for Biostatistics and Epidemiology, Section for Treatment Research, Department for Research and Education, Division of Mental Health and Addiction, Oslo University Hospital, Oslo, Norway
| | - Anuschka Polder
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Eystein Skjerve
- Centre for Epidemiology and Biostatistics, Norwegian University of Life Sciences (NMBU), Oslo, Norway
| | - Jan Aaseth
- Innlandet Hospital Trust, Research Department, Brumunddal, Norway; Faculty of Health and Social Sciences, Inland Norway University of Applied Sciences, Elverum, Norway
| | - Jan L Lyche
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Oslo, Norway
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11
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Müller MHB, Polder A, Brynildsrud OB, Grønnestad R, Karimi M, Lie E, Manyilizu WB, Mdegela RH, Mokiti F, Murtadha M, Nonga HE, Skaare JU, Solhaug A, Lyche JL. Prenatal exposure to persistent organic pollutants in Northern Tanzania and their distribution between breast milk, maternal blood, placenta and cord blood. Environ Res 2019; 170:433-442. [PMID: 30634139 DOI: 10.1016/j.envres.2018.12.026] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [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: 09/10/2018] [Revised: 12/07/2018] [Accepted: 12/13/2018] [Indexed: 05/05/2023]
Abstract
Human exposure to persistent organic pollutants (POPs) begins during pregnancy and may cause adverse health effects in the fetus or later in life. The present study aimed to assess prenatal POPs exposure to Tanzanian infants and evaluate the distribution of POPs between breast milk, maternal blood, placenta and cord blood. For assessment of prenatal exposure, 48 maternal blood samples from Mount Meru Regional Referral Hospital (MMRRH), Arusha Tanzania, were analyzed for organochlorine pesticides (OCPs), polychlorinated biphenyls (PCBs), brominated flame retardants (BFRs), dioxin-like (DL) activity and perfluorinated alkyl substances (PFASs). For evaluation of POPs distribution between maternal/infant compartments, breast milk, placenta and cord blood corresponding to the maternal blood were analyzed for OCPs, PCBs and BFRs. In maternal blood, p,p´- DDE was detected in 100% of the samples ranging between 29 and 1890 ng/g lipid weight (lw). PCB-153 was the only PCB detected in maternal blood, with detection rate of 29% and concentrations up to 116 ng/g lw. BDE-47 was detected in 65% of the maternal blood samples, ranging between <LOD and 83.2 ng/g lw. DL activity was measured using Dioxin Responsive CALUX® bioassay. The DL activity was above LOQ in 92% of the samples, ranging from <LOQ to 114 pg CALUX TEQ/g lw. PFASs was dominated by PFOS and PFOA, however, the concentrations were low (range ∑PFASs 0.18-3.14 ng/mL). p,p´-DDE was detected in 100% of the breast milk, placenta and cord blood samples and the concentrations were strongly correlated (r = 0.89-0.98) between all compartments. Maternal blood (MB) had significantly lower p,p´-DDE concentrations (ng/g lw) than cord blood (CB) and breast milk (BM). The median CB/MB ratio was 1.3 and median MB/BM ratio was 0.8. p,p´-DDE concentrations in breast milk and cord blood did not show significant difference and median CB/BM ratio was 1. In addition, the relative p,p`-DDE transfer from maternal blood to breast milk and to cord blood increased when p,p`-DDE concentrations in maternal blood increased. This study shows that Tanzanian infants are exposed to a wide range of POPs during fetal life, which raise concerns for potential health effects. In addition, this study found that maternal blood concentrations may lead to underestimation of prenatal exposure, while breast milk collected close to delivery may be a more suitable indicator of prenatal exposure.
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Affiliation(s)
- M H B Müller
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway.
| | - A Polder
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway
| | - O B Brynildsrud
- Norwegian Institute of Public Health, P.O. Box 4404 Nydalen, N-0403 Oslo, Norway
| | - R Grønnestad
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway; Norwegian University of Science and Technology, NO-7491 Trondheim, Norway
| | - M Karimi
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway
| | - E Lie
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway; Norwegian Institute for Water Research, Gaustadallèen 21, N-0349 Oslo, Norway
| | - W B Manyilizu
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - R H Mdegela
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - F Mokiti
- Mount Meru Regional Referral Hospital, P.O. Box 3092, Arusha, Tanzania
| | - M Murtadha
- Mount Meru Regional Referral Hospital, P.O. Box 3092, Arusha, Tanzania
| | - H E Nonga
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - J U Skaare
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum, N-0106 Oslo, Norway
| | - A Solhaug
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum, N-0106 Oslo, Norway
| | - J L Lyche
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway
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12
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Jansen A, Polder A, Müller MHB, Skjerve E, Aaseth J, Lyche JL. Increased levels of persistent organic pollutants in serum one year after a great weight loss in humans: Are the levels exceeding health based guideline values? Sci Total Environ 2018; 622-623:1317-1326. [PMID: 29890598 DOI: 10.1016/j.scitotenv.2017.11.241] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [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: 07/12/2017] [Revised: 10/27/2017] [Accepted: 11/20/2017] [Indexed: 06/08/2023]
Abstract
BACKGROUND With the growing prevalence of obesity, an increased number of bariatric surgeries are being performed. Lipophilic persistent organic pollutants (POPs) are stored in adipose tissue, and an increased release of lipophilic POPs into the blood circulation may occur following rapid weight loss such as after bariatric surgery. OBJECTIVES To evaluate and compare POP levels in serum before and after bariatric surgery, and to assess if the POP levels exceeded health based guideline values, with particular focus on women of childbearing age (WCBA). METHODS Serum samples from 63 patients before and one year after bariatric surgery were analysed for organochlorine pesticides (OCPs); polychlorinated biphenyls (PCBs); and brominated flame retardants (BFRs). RESULTS Mean weight loss one year after surgery was 32.1kg. The levels of all the analysed POPs in serum increased during the study period. Median levels of dichlorodiphenyldichloroethylene (p,p'-DDE), hexachlorobenzen (HCB) and PCB-153 increased from 90.2ng/g lipid weight (lw) to 158.5ng/glw, from 21.1ng/glw to 36.4ng/glw and from 48.7ng/glw to 71.5ng/glw, respectively. The highest percentage increase was observed for PCB -138, with 83.1%. BFRs were detected in low sample numbers and at low levels. Guideline values for ΣPCB6 in serum were exceeded for 5% of the participants. CONCLUSIONS Weight loss after bariatric surgery resulted in increases of POPs levels in serum between 46.7%-83.1%. Guideline values for ΣPCB6 in serum were exceeded for 5% of the participants. For WCBA, the possible transfer of comparable levels to infants warrants further attention.
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Affiliation(s)
- Aina Jansen
- Center for Morbid Obesity, Department of Surgery, Innlandet Hospital Trust, Kyrre Grepps Gate 11, N-2819 Gjøvik, Norway; Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway.
| | - Anuschka Polder
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway
| | - Mette H B Müller
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway
| | - Eystein Skjerve
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway
| | - Jan Aaseth
- Innlandet Hospital Trust, Kongsvinger Hospital Division, Parkveien 35, N-2212 Kongsvinger, Norway; Faculty of Public Health, Inland Norway University of Applied Sciences, PO Box 400, N-2418 Elverum, Norway
| | - Jan L Lyche
- Department of Food Safety and Infection Biology, Norwegian University of Life Sciences (NMBU), Campus Adamstuen, P.O. Box 8146 Dep, N-0033 Oslo, Norway
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13
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Müller MHB, Polder A, Brynildsrud OB, Karimi M, Lie E, Manyilizu WB, Mdegela RH, Mokiti F, Murtadha M, Nonga HE, Skaare JU, Lyche JL. Organochlorine pesticides (OCPs) and polychlorinated biphenyls (PCBs) in human breast milk and associated health risks to nursing infants in Northern Tanzania. Environ Res 2017; 154:425-434. [PMID: 28196346 DOI: 10.1016/j.envres.2017.01.031] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [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: 09/21/2016] [Revised: 01/15/2017] [Accepted: 01/25/2017] [Indexed: 06/06/2023]
Abstract
This is the first study to report organochlorines (OCs), including chlorinated pesticides (OCPs) and polychlorinated biphenyls (PCBs) in human milk from Tanzania. The main aims of this study were to assess the level of contamination and the possible health risks related to OC exposure in nursing infants from the Northern parts of Tanzania. Ninety-five healthy mother-infant couples attending Mount Meru Regional Referral Hospital (MMRRH), Arusha, Tanzania, were assessed for associations between maternal/infant characteristics, i.e. mother's age, BMI, gestational weight gain, occupation, residence and fetal growth parameters and breast milk levels of OCPs, such as dichlorodiphenyltrichloroethane (DDT) and its metabolites, dieldrin and PCBs. p,p'-DDE and p,p'-DDT were detected in 100% and 75% of the breast milk samples, respectively, and ranged between 24 and 2400ng/g lipid weight (lw) and <LOD and 133ng/g lw, respectively. Dieldrin was detected in 66% of the samples in levels up to 937ng/g lw. ∑7PCBs ranged between <LOD and 157ng/g lw. Other OCPs were detected in low levels. For assessment of health risks, the Hazard Quotient (HQ) was calculated by comparing estimated daily intakes of OCPs and PCBs with health based guidance values. The estimated daily intake (ng/kg body weight/day) of ∑DDTs, dieldrin and nondioxin-like PCBs (∑6PCBs) exceeded the provisional tolerable daily intake (PTDI) in two, six and forty-eight of the nursing infants, respectively, suggesting potential health risks. In addition, head circumference were negatively associated with p,p´-DDE in female infants, suggesting that OC exposure during pregnancy may influence fetal growth.
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Affiliation(s)
- M H B Müller
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N- 0033, Oslo, Norway.
| | - A Polder
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N- 0033, Oslo, Norway
| | - O B Brynildsrud
- Norwegian Institute of Public Health, P.O. Box 4404 Nydalen, N-0403, Oslo, Norway
| | - M Karimi
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N- 0033, Oslo, Norway
| | - E Lie
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N- 0033, Oslo, Norway; Norwegian Institute for Water Research, Gaustadallèen 21, N-0349, Oslo, Norway
| | - W B Manyilizu
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - R H Mdegela
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - F Mokiti
- Mount Meru Regional Referral Hospital, P.O. Box 3092, Arusha, Tanzania
| | - M Murtadha
- Mount Meru Regional Referral Hospital, P.O. Box 3092, Arusha, Tanzania
| | - H E Nonga
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - J U Skaare
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum, N-0106, Oslo, Norway
| | - J L Lyche
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N- 0033, Oslo, Norway
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Müller MHB, Polder A, Brynildsrud OB, Lie E, Løken KB, Manyilizu WB, Mdegela RH, Mokiti F, Murtadha M, Nonga HE, Skaare JU, Lyche JL. Brominated flame retardants (BFRs) in breast milk and associated health risks to nursing infants in Northern Tanzania. Environ Int 2016; 89-90:38-47. [PMID: 26826361 DOI: 10.1016/j.envint.2015.12.032] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [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: 10/07/2015] [Revised: 12/03/2015] [Accepted: 12/23/2015] [Indexed: 06/05/2023]
Abstract
The main aim of this study was to assess brominated flame retardants (BFRs) in breast milk in the Northern parts of Tanzania. Ninety-five colostrum samples from healthy, primiparous mothers at Mount Meru Regional Referral Hospital (MMRRH), Arusha Tanzania, were analyzed for polybrominated diphenyl ethers (PBDEs), hexabromocyclododecane (HBCD), 1,2-bis(2,4,6-tribromophenoxy) ethane (BTBPE), hexabromobenzene (HBB), (2,3-dibromopropyl) (2,4,6-tribromophenyl) ether (DPTE), pentabromoethylbenzene (PBEB) and 2,3,4,5,6-pentabromotoluene (PBT). The Ʃ7PBDE (BDE 28, 47, 99, 100, 153, 154, 183) ranged from below level of detection (<LOD) to 785ng/g lipid weight (lw). BDE 47, 99, 100 and 153 were the dominating congeners, suggesting recent and ongoing exposure to banned, commercial PentaBDE mixture. A multiple linear regression model revealed that mothers eating clay soil/Pemba during pregnancy had significantly higher levels of BDE 47, 99, 100 and 153 in their breast milk than mothers who did not eat clay soil/Pemba. Infant birth weight and birth length were significantly correlated with the levels of BDE 47, 99, 100 and 153. The estimated daily intake (ng/kg body weight/day) of BDE 47 and 99 exceeded the US EPA Reference doses (RfD) in four and eight mothers, respectively, suggesting a potential health risk to the nursing infants.
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Affiliation(s)
- M H B Müller
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033, Oslo, Norway.
| | - A Polder
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033, Oslo, Norway
| | - O B Brynildsrud
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033, Oslo, Norway
| | - E Lie
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033, Oslo, Norway; Norwegian Institute for Water Research, Gaustadallèen 21, N-0349, Oslo, Norway
| | - K B Løken
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033, Oslo, Norway; Norwegian Institute for Water Research, Gaustadallèen 21, N-0349, Oslo, Norway
| | - W B Manyilizu
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - R H Mdegela
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - F Mokiti
- Mount Meru Regional Referral Hospital, P.O. Box 3092, Arusha, Tanzania
| | - M Murtadha
- Mount Meru Regional Referral Hospital, P.O. Box 3092, Arusha, Tanzania
| | - H E Nonga
- Sokoine University of Agriculture, Department of Veterinary Medicine and Public Health, P.O. Box 3021, Morogoro, Tanzania
| | - J U Skaare
- Norwegian Veterinary Institute, P.O. Box 750, Sentrum, N-0106, Oslo, Norway
| | - J L Lyche
- Norwegian University of Life Sciences, Campus Adamstuen, P.O. Box 8146 Dep, N-0033, Oslo, Norway
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