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Silva VF, Tedesco M, Fontes ST, Owatari MS, Gatto YMG, Ferreira MB, Santos PCD, Costa GAC, Palmieri AF, Santos GGD, Saldaña-Serrano M, Bainy ACD, Martins ML, Mouriño JLP. Effects of supplementation with different zinc-based products on the growth and health of Nile tilapia. Fish Shellfish Immunol 2024; 149:109534. [PMID: 38575040 DOI: 10.1016/j.fsi.2024.109534] [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] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 03/14/2024] [Accepted: 04/01/2024] [Indexed: 04/06/2024]
Abstract
Zinc is one of the essential microelements for the metabolism of animals. Zinc nanoparticles may have higher bioavailability due to their low specific surface area, facilitating absorption by fish. The present study aimed to evaluate the effects of supplementation with different zinc-based products on the growth and health of Nile tilapia Oreochromis niloticus. Zinc, in different sizes (nanoparticles or bulk) and forms (inorganic or organic), were used as a supplement in the tilapia diet at a dose of 15 mg kg feed-1 for 60 days. At the end of the feeding trial, production performance, hemato-immunological parameters, activity of antioxidant system enzymes, exposure to Streptococcus agalactiae and zinc concentration in the muscle were examined. After the bacterial challenge, the mean corpuscular hemoglobin concentration (MCHC) significantly increased in the fish treated with organic zinc, inorganic nano zinc, and organic nano zinc, while in the control group (inorganic zinc), MCHC remained unchanged. Regarding defense cells, dietary inorganic nano zinc increased the number of basophils (1.50 ± 1.10) compared to organic zinc (0.80 ± 0.90). Lymphocyte count increased after the challenge only in the organic zinc treatments (bulk and nanoparticles). Neutrophils decreased in the control (inorganic zinc) (2.20 ± 1.70) and inorganic nano zinc (2.60 ± 2.70) treatments after the challenge. When compared before and after the bacterial challenge, the plasma antimicrobial titer significantly increased after the bacterial challenge in all treatments. No significant differences were observed for total proteins, enzymes (SOD and CAT), cumulative survival and zinc deposition on fillet. In conclusion, organic zinc in nanoparticles or bulk size increased Nile tilapia innate defense during bacterial infection. However, the other parameters evaluated were not affected by zinc particle size or form (organic or inorganic), indicating that further evaluations should be conducted with organic zinc in nanoparticles or bulk size in the tilapia diet.
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Affiliation(s)
- Vitor Fernandes Silva
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Marília Tedesco
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Silvia Terra Fontes
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Marco Shizuo Owatari
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil.
| | - Yuri Malaquias Gauglitz Gatto
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Matheus Berlofa Ferreira
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Paola Capistrano Dos Santos
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Gabriel Antonio Cuzma Costa
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Adriano Faria Palmieri
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Gracienhe Gomes Dos Santos
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - Miguel Saldaña-Serrano
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, SC, 88037-000, Brazil
| | - Afonso Celso Dias Bainy
- Laboratory of Biomarkers of Aquatic Contamination and Immunochemistry-LABCAI, Federal University of Santa Catarina, UFSC, Florianópolis, SC, 88037-000, Brazil
| | - Maurício Laterça Martins
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
| | - José Luiz Pedreira Mouriño
- AQUOS - Aquatic Organisms Health Laboratory, Department of Aquaculture, Federal University of Santa Catarina (UFSC), Florianópolis, Santa Catarina, Brazil
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de Araújo PA, Maciel-Honda PO, de Oliveira Costa-Fernandes T, Dos Santos GG, Martins ML. Efficacy of chlorine, sodium chloride and trichlorfon baths against monogenean Dawestrema cycloancistrium parasite of pirarucu Arapaima gigas. J Fish Dis 2023; 46:113-126. [PMID: 36334301 DOI: 10.1111/jfd.13725] [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: 08/31/2022] [Revised: 10/13/2022] [Accepted: 10/18/2022] [Indexed: 06/16/2023]
Abstract
This study investigated the efficacy of sodium chloride (SC) and trichlorfon (T) against Dawestrema cycloancistrium and its physiological effects on Arapaima gigas. The efficacy of chlorine (C) as a prophylactic disinfectant was also evaluated. In vitro test with 15 treatments were: SC 4, 8, 10, 12, 14 g/L, T0.1, 0.4, 0.8, 1.6, 3.2 mg/L, and C500, 1000, 3000, 6000 mg/L. Scanning electron microscopy was performed to evaluate parasite damage. The in vivo test was as follows: control, 4 h short baths, once a day, for four consecutive days (SC12 g/L, T5 mg/L); 24 h long baths, for 2 days in 24 h intervals (SC10 g/L, T5 mg/L). In vitro exposure to SC12 and 14 g/L caused 100% mortality of monogeneans at 45 and 60 min, while at T3.2 and 1.6 mg/L 100% of monogeneans died at 30 and 60 min, respectively. In vitro exposure to C resulted in complete mortality after 2-5 min exposure. The SC and T LD50-96 h were 9.9 g/L and 9.73 mg/L, respectively. All in vivo treatments presented efficacy above or close to 90%, with low survival in the long baths. C, starting at 500 mg/L for 5 min, can be used as a disinfectant. Short baths with SC12 g/L and T5 mg/L are recommended for D. cycloancistrium infestations in Arapaima.
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Santos GGD, Gonçalves LCS, Buzzo N, Mendes TAR, Dias TP, da Silva RCMA, da Silva RF, de Felicio HCC, Santos Júnior R, Miyazaki MCOS. Quality of life, depression, and psychosocial characteristics of patients awaiting liver transplants. Transplant Proc 2013; 44:2413-5. [PMID: 23026609 DOI: 10.1016/j.transproceed.2012.07.046] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND The identification of the psychological issues that impair the quality of life and the adherence to treatment in transplant candidates are important. OBJECTIVE This study evaluated the presence of symptoms of depression and the quality of life of liver transplant candidates. METHODS One hundred liver transplant candidates underwent a psychological analysis using the following instruments: the short form-36 (SF-36) quality of life questionnaire, the Beck depression inventory (BDI), and Structured Interviews for liver transplant candidates. RESULTS Seventy-three (73%) of the patients were males. Interestingly, 63% of the patients were in a domestic partnership. At the time of the evaluation, 55 patients were not working due to illness, 27 patients were actively working, and 11 patients were retired. Importantly, fears related to the transplant (e.g., fear the surgery and of death) were identified in 38% of the patients. The data from this study demonstrated a significant negative correlation between depressive scores (BDI) and seven of the eight areas of quality of life (SF-36), such as functional capacity (r = .317, P = .0013), social aspects (r = -.469, P < .0001), economic aspects (r = -.319, P = .0012), and mental health (r = -.3832, P < .0001). CONCLUSION The data indicated that the psychological aspects related to transplants require psychological intervention because they can affect the recuperation process, the quality of life, and the adherence to treatment for potential transplant patients.
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