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Nishimura T, Kuribara Y, Fukuzawa R, Mimura K, Funaki H, Tanaka K, Watanabe R, Uchida H, Suzuki T, Adachi M. First report of Alexandrium (Dinophyceae) associated with marine macroalgae off Japan: Diversity, distribution, and toxicity. Harmful Algae 2021; 104:101924. [PMID: 34023072 DOI: 10.1016/j.hal.2020.101924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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: 03/18/2020] [Revised: 10/12/2020] [Accepted: 10/16/2020] [Indexed: 06/12/2023]
Abstract
Macroalgal samples were collected from coastal waters in subboreal to subtropical zones in Japan (< 3-30 m depths) and 32 clonal strains of non-motile dinoflagellate-like protists were established. Molecular phylogenetic analyses of the LSU rDNA D1/D2, SSU rDNA, ITS region, and concatenated SSU rDNA + LSU rDNA D1/D2 sequences revealed that the strains nested within the genus Alexandrium. They were separated into three novel phylotypes: Alexandrium spp. type 1, type 2, and type 3. Analysis of the concatenated sequences revealed that the most closely related species for the three phylotypes was A. ostenfeldii. Most cells from strains of the three phylotypes were non-motile and hemispherical to spherical in shape. The average diameters of the non-motile cells were between 35 and 39 µm. Type 1 and type 2 were widely distributed in Japan from the temperate to subtropical zones, whereas type 3 was restricted to the temperate zone. Furthermore, type 2 was widespread from shallow to deep waters, whereas type 1 and type 3 were restricted to deep waters. Growth experiments in strains belonging to the three phylotypes revealed that the occurrence ratios of motile cells were very low (≤ 1.1% of the total cells). The production of paralytic shellfish poisoning toxins, tetrodotoxin, and cyclic imines was assessed in strains belonging to the three phylotypes by LC/MS/MS analysis. The strains did not produce any of the toxins tested. The strains of the three phylotypes showed lethal toxicity to mice by intraperitoneal administration. To the best of our knowledge, this is the first study to report the existence of Alexandrium associated with marine macroalgae from Japan.
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Affiliation(s)
- Tomohiro Nishimura
- Laboratory of Aquatic Environmental Science (LAQUES), Faculty of Agriculture and Marine Science, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
| | - Yuki Kuribara
- Laboratory of Aquatic Environmental Science (LAQUES), Faculty of Agriculture and Marine Science, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
| | - Ryo Fukuzawa
- Laboratory of Aquatic Environmental Science (LAQUES), Faculty of Agriculture and Marine Science, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
| | - Katsuya Mimura
- Laboratory of Aquatic Environmental Science (LAQUES), Faculty of Agriculture and Marine Science, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
| | - Hiroshi Funaki
- Laboratory of Aquatic Environmental Science (LAQUES), Faculty of Agriculture and Marine Science, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan; The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime, 790-8566, Japan.
| | - Kouki Tanaka
- Usa Marine Biological Institute, Kochi University, 194 Inoshiri, Usa, Tosa, Kochi, 781-1164, Japan.
| | - Ryuichi Watanabe
- Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa, 236-8648, Japan.
| | - Hajime Uchida
- Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa, 236-8648, Japan.
| | - Toshiyuki Suzuki
- Fisheries Technology Institute, Japan Fisheries Research and Education Agency, 2-12-4 Fukuura, Kanazawa, Yokohama, Kanagawa, 236-8648, Japan.
| | - Masao Adachi
- Laboratory of Aquatic Environmental Science (LAQUES), Faculty of Agriculture and Marine Science, Kochi University, 200 Otsu, Monobe, Nankoku, Kochi, 783-8502, Japan.
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Kuribara Y, Otaka Y, Namiki A, Kawai‐Kowase K, Tamura J, Ishiyama N. Re-expansion pulmonary edema after thoracentesis for iatrogenic pneumothorax and severe subcutaneous emphysema. Clin Case Rep 2020; 8:3649-3651. [PMID: 33364020 PMCID: PMC7752403 DOI: 10.1002/ccr3.3456] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/29/2020] [Accepted: 10/12/2020] [Indexed: 11/11/2022] Open
Abstract
Subclavian central venous catheterization can cause severe complications, including tension pneumothorax, subcutaneous emphysema, and pneumomediastinum. Re-expansion pulmonary edema after thoracentesis is a life-threatening complication.
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Affiliation(s)
- Yuki Kuribara
- General Internal MedicineHidaka‐kai Hidaka HospitalTakasakiGunmaJapan
| | - Yukihiro Otaka
- General Internal MedicineHidaka‐kai Hidaka HospitalTakasakiGunmaJapan
- Department of General MedicineGunma University Graduate School of MedicineMaebashiGunmaJapan
| | - Azusa Namiki
- General Internal MedicineHidaka‐kai Hidaka HospitalTakasakiGunmaJapan
| | - Keiko Kawai‐Kowase
- Department of General MedicineGunma University Graduate School of MedicineMaebashiGunmaJapan
| | - Jun’ichi Tamura
- Department of General MedicineGunma University Graduate School of MedicineMaebashiGunmaJapan
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