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Endo T, Kimura O, Terasaki M, Fujii Y, Haraguchi K, Kato Y. Comparison of carbon, nitrogen, and oxygen stable isotope ratios and mercury concentrations in muscle tissues of five beaked whale species and sperm whales stranded in Hokkaido, Japan. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 2024; 60:251-271. [PMID: 38833381 DOI: 10.1080/10256016.2024.2352373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Accepted: 04/10/2024] [Indexed: 06/06/2024]
Abstract
We studied δ13C, δ15N and δ18O values, and total mercury (THg) concentrations in muscle samples from deep-sea predators - five beaked whale species and sperm whales - stranded along the coast of Hokkaido, in the north of Japan in 2010 and 2019. The δ13C, δ15N and δ18O values, THg concentrations, and body length (BL) of Stejneger's beaked whales were similar to those of Hubbs' beaked whales, which belong to the same genus. In contrast, δ13C values, THg concentrations, and BL of Sato's beaked whales were markedly different from those of Baird's beaked whales, which belong to the same genus. Stejneger's and Hubbs' beaked whales living around Hokkaido may compete in their ecological niches, whereas Sato's and Baird's beaked whales may segregate their ecological niches. Although Cuvier's beaked whales and sperm whales belong to different genera and their BLs were significantly different, their δ13C and δ15N values were similar, probably because they can dive and stay in deeper waters than other beaked whale species. The δ13C values in combined samples from all whales increased with increasing BL, probably owing to the larger whale species' dietary preference for squid. The δ13C values in combined samples from all whales were positively correlated with THg concentrations, whereas the δ15N values in the combined samples were negatively correlated. The δ18O values in combined samples from most whales tended to be positively correlated with THg concentrations. These correlations may be explained by a higher THg load from deep-sea feeding than from pelagic feeding and by a feeding shift towards lower trophic levels.
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Affiliation(s)
- Tetsuya Endo
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Osamu Kimura
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Masaru Terasaki
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Hokkaido, Japan
| | - Yukiko Fujii
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy, Fukuoka, Japan
| | - Koichi Haraguchi
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy, Fukuoka, Japan
| | - Yoshihisa Kato
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Kagawa, Japan
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Endo T, Kimura O, Terasaki M, Nakagun S, Kato Y, Fujii Y, Haraguchi K, Baker CS. Carbon, nitrogen, and oxygen stable isotope ratios of striped dolphins and short-finned pilot whales stranded in Hokkaido, northern Japan, compared with those of other cetaceans stranded and hunted in Japan. ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 2023; 59:230-247. [PMID: 37549039 DOI: 10.1080/10256016.2023.2234590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 05/26/2023] [Indexed: 08/09/2023]
Abstract
Strandings of striped dolphins (SD) and short-finned pilot whales (PW) in Hokkaido, northern Japan, are rare but have recently increased, probably due to global warming. We quantified δ13C, δ15N, and δ18O in muscles of SD (n = 7) and PW (n = 3) stranded in Hokkaido and compared these values with those in muscles (red meat products) of hunted SD and PW in three areas of central and southern Japan. δ18O in stranded SD, except for the calf, decreased with increasing body length (BL), whereas δ13C increased, with no BL-related changes in δ15N. The variability of δ18O (range of maximum and minimum) was larger in the stranded SD (7.5 ‰) than of the hunted SD in three areas (0.9, 1.9, and 1.4 ‰), whereas that of δ15N was smaller in the stranded SD than in the hunted SD. Similarly, the variability of δ18O was larger in the stranded PW in Hokkaido (3.3 ‰) than in the hunted PW in central Japan (1.4 ‰). The larger variability of δ18O and smaller variability of δ15N in stranded SD imply long-term sojourning in coastal waters and feeding on small amounts of limited prey species at low trophic levels before death.
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Affiliation(s)
- Tetsuya Endo
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Japan
| | - Osamu Kimura
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Japan
| | - Masaru Terasaki
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, Ishikari-Tobetsu, Japan
| | - Shotaro Nakagun
- Laboratory of Veterinary Pathology, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Yoshihisa Kato
- Kagawa School of Pharmaceutical Sciences, Tokushima Bunri University, Sanuki, Japan
| | - Yukiko Fujii
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy, Fukuoka, Japan
| | - Koichi Haraguchi
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy, Fukuoka, Japan
| | - C Scott Baker
- Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, Corvallis, OR, USA
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Gîlcă-Blanariu GE, Coroabă A, Ciocoiu M, Trifan A, Dimofte G, Diaconescu S, Afrăsânie VA, Balan GG, Pinteală T, Ștefănescu G. Hair EDX Analysis-A Promising Tool for Micronutrient Status Evaluation of Patients with IBD? Nutrients 2021; 13:nu13082572. [PMID: 34444730 PMCID: PMC8399661 DOI: 10.3390/nu13082572] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 07/21/2021] [Accepted: 07/22/2021] [Indexed: 02/05/2023] Open
Abstract
Micronutrient deficiencies can arise in various conditions, including inflammatory bowel diseases (IBD), and diagnosing these deficiencies can be challenging in the absence of specific clinical signs. The aim of this study was to evaluate the status of various trace elements hair concentration in IBD patients compared to a healthy control group and to identify potential correlations between the micronutrient status and relevant parameters related to disease activity. The concentrations of iron, magnesium, calcium, zinc, copper, manganese, selenium and sulfur in the hair of 37 IBD patients with prior diagnosed IBD (12 Crohn's disease and 25 ulcerative colitis) and 31 healthy controls were evaluated by Energy Dispersive X-Ray spectroscopy (EDX). Significant differences in hair concentration profile of studied trace elements were identified for IBD patients compared to healthy controls. A significantly decreased hair concentration of iron, magnesium, calcium and selenium and a significantly increased sulfur hair concentration were observed in IBD patients at the time of evaluation. A decreased hair calcium concentration (r = -0.772, p = 0.003) and an increased sulfur concentration (r = 0.585, p = 0.046) were significantly correlated with disease activity. Conclusion: Hair mineral and trace elements evaluation may contribute to a proper evaluation of their status in IBD patients and improving the management of nutritional status of IBD patients.
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Affiliation(s)
- Georgiana-Emmanuela Gîlcă-Blanariu
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
| | - Adina Coroabă
- Petru Poni Institute of Macromolecular Chemistry, 700487 Iași, Romania;
| | - Manuela Ciocoiu
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
| | - Anca Trifan
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
- Sf Spiridon County Clinical Emergency Hospital, 700111 Iași, Romania;
| | - Gabriel Dimofte
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
| | - Smaranda Diaconescu
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
- Correspondence:
| | - Vlad-Adrian Afrăsânie
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
| | - Gheorghe G. Balan
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
- Sf Spiridon County Clinical Emergency Hospital, 700111 Iași, Romania;
| | - Tudor Pinteală
- Sf Spiridon County Clinical Emergency Hospital, 700111 Iași, Romania;
| | - Gabriela Ștefănescu
- Faculty of Medicine, Grigore T Popa University of Medicine and Pharmacy, 700115 Iași, Romania; (G.-E.G.-B.); (M.C.); (A.T.); (G.D.); (V.-A.A.); (G.G.B.); (G.Ș.)
- Sf Spiridon County Clinical Emergency Hospital, 700111 Iași, Romania;
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Ogasawara H, Hayasaka M, Maemoto A, Furukawa S, Ito T, Kimura O, Endo T. Levels of major and trace metals in the scalp hair of Crohn's disease patients: correlations among transition metals. Biometals 2021; 34:197-210. [PMID: 33387116 DOI: 10.1007/s10534-020-00272-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 11/13/2020] [Indexed: 12/16/2022]
Abstract
Concentrations of 16 metals in the scalp hair of male Crohn's disease (CD) patients (n = 28) were compared to those of male control subjects (n = 25). The majority of patients (n = 20) took an anti-inflammatory agent (mesalazine), and several patients underwent colectomy. A low concentration of serum ferritin was observed in approximately 50% of CD patients due to Fe-deficiency anemia. The concentrations of Fe, Cr, and Co in the hair of CD patients were significantly higher than those of control subjects, and particularly high concentrations were found in CD patients with low serum ferritin. Significant correlations were found among the concentrations of Fe, Cr, and Co in the hair of CD patients, but not in control subjects. In agreement with previous reports, a significant negative correlation was found between ferritin and transferrin concentrations in serum, although the available data in this study was limited (n = 8). Transferrin not only binds to Fe3+ but also to Cr3+ and Co3+, and the amount of transferrin is increased in Fe-deficiency anemia. Thus, the majority of the Fe3+, Cr3+, and Co3+ in the serum of CD patients is likely to bind to transferrin, which may be associated with the higher concentrations of those metals, as well as the significant correlations among those metals in the scalp hair of CD patients. In addition, colectomy may alter the intestinal absorption rate of some metals, while mesalazine may increase the concentrations of Mn and some metals in the scalp hair by chelate formation.
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Affiliation(s)
- Hideki Ogasawara
- Kashiwaba Neurosurgical Hospital, E1-15-20, Tsukisamu, Toyohira-Ku, Sapporo, Hokkaido, 062-8513, Japan
| | - Moriaki Hayasaka
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido, 061-0293, Japan
| | - Atsuo Maemoto
- Sapporo Higashi Tokushukai Hospital, N33-E14, Higashi-Ku, Sapporo, Hokkaido, 065-0033, Japan
| | - Shigeru Furukawa
- Sapporo Higashi Tokushukai Hospital, N33-E14, Higashi-Ku, Sapporo, Hokkaido, 065-0033, Japan
| | - Takahiro Ito
- Sapporo Higashi Tokushukai Hospital, N33-E14, Higashi-Ku, Sapporo, Hokkaido, 065-0033, Japan
| | - Osamu Kimura
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido, 061-0293, Japan
| | - Tetsuya Endo
- School of Pharmaceutical Sciences, Health Sciences University of Hokkaido, 1757, Kanazawa, Ishikari-Tobetsu, Hokkaido, 061-0293, Japan.
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