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Pires PGS, Oliveira GS, McManus C, Santos VM, Moraes PO. Impact of housing system on intestinal microbiota of laying hens - A systematic review. Res Vet Sci 2024; 170:105184. [PMID: 38382220 DOI: 10.1016/j.rvsc.2024.105184] [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: 08/14/2023] [Revised: 02/07/2024] [Accepted: 02/11/2024] [Indexed: 02/23/2024]
Abstract
Studies on the housing system's impact on laying hens' intestinal microbiota were retrieved from the Web of Science, PubMed, and Scopus (between 2017 and 2022). Inclusion criteria were studies that discussed measurable effects related to the topic written in English, Portuguese, and Spanish. Of 3281 articles in the identification stage, 12 studies were used in the systematic review. Asia developed most research relating to the subject. Most studies compared the intestinal microbiota of laying hens from conventional cages versus Cage-Free or Free-Range. However, no study has evaluated the intestinal microbiota of laying hens maintained in an organic system. Greengene and Silva were the most used reference in the studies. According to the results observed in the studies included in the systematic review, there is greater alpha diversity in the alternative system and a high dissimilarity between the conventional and alternative systems. Exposure to environmental factors such as soil, vegetation, natural lighting, access to pastures, and ingesting fibrous foods can lead to changes in the intestinal microbiota. A brief outline of published scientific evidence demonstrates that the housing system can change the gut microbiome of hens. This study summarises the relationship between the housing system and the intestinal microbiome of laying hens and provides a roadmap for future research regarding the gut microbiome of hens.
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Affiliation(s)
- P G S Pires
- Instituto Federal Catarinense, Campus Concórdia, SC, Brazil.
| | - G S Oliveira
- Faculty of Agronomy and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - C McManus
- Faculty of Agronomy and Veterinary Medicine, University of Brasília, Brasília, Brazil
| | - V M Santos
- Laboratory of Poultry Science, Federal Institute of Brasília - Campus Planaltina, Brasília, Brazil
| | - P O Moraes
- Department of Animal Sciences and Rural Development, Universidade Federal de Santa Catarina - Campus Florianópolis, SC, Brazil
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Marciano LPA, Costa LF, Cardoso NS, Freire J, Feltrim F, Oliveira GS, Paula FBA, Silvério ACP, Martins I. Biomonitoring and risk assessment of human exposure to triazole fungicides. Regul Toxicol Pharmacol 2024; 147:105565. [PMID: 38185363 DOI: 10.1016/j.yrtph.2024.105565] [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: 08/30/2023] [Revised: 12/23/2023] [Accepted: 01/04/2024] [Indexed: 01/09/2024]
Abstract
Risk assessment and biomarkers were evaluated in volunteers exposed to triazole fungicides in southern Minas Gerais, Brazil. Volunteers were divided into two groups: occupationally and environmentally exposed to pesticides (n = 140) and those unexposed (n = 50) from urban areas. Urine samples were analyzed by GC-MS for triazoles, and samples from men and women in the exposed group were quantified. Groups were further stratified by sex to evaluate the biomarkers results. Oxidative stress was indicated by biomarker analysis for occupationally exposed men with elevated malondialdehyde levels and reduced superoxide dismutase and catalase activity (p < 0.0001). Bile acid levels were also elevated in the exposed group (p < 0.0001). Biomarkers in this study suggest recent, reversible changes due to pesticide exposure. Liver enzyme levels showed no significant differences. The highest Estimated Daily Intake for epoxiconazole ranged from 0.534 to 6.31 μg/kg-bw/day for men and 0.657-8.77 μg/kg-bw/day for women in the exposed group. Considering the highest detected urinary triazole value, the calculated Hazard Quotient for epoxiconazole was 0.789 for men and 1.1 for women. Results indicate a health risk associated with environmental triazole exposure, highlighting the importance of biomonitoring in risk assessment to prevent intoxication and assist in mitigating adverse health effects from chronic pesticide exposure.
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Affiliation(s)
- Luiz P A Marciano
- Laboratory of Toxicant and Drug Analyses, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
| | - Luiz F Costa
- Laboratory of Toxicant and Drug Analyses, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
| | - Naiane S Cardoso
- Clinical and Experimental Analysis Laboratory, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
| | - Josiane Freire
- Laboratory of Toxicant and Drug Analyses, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
| | - Fernando Feltrim
- Laboratory of Toxicant and Drug Analyses, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
| | - Geovana S Oliveira
- Laboratory of Toxicant and Drug Analyses, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
| | - Fernanda B A Paula
- Clinical and Experimental Analysis Laboratory, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
| | | | - Isarita Martins
- Laboratory of Toxicant and Drug Analyses, Department of Clinical and Toxicological Analysis, Gabriel Monteiro da Silva St. 700, Federal University of Alfenas - Unifal-MG, 37130-000, Alfenas, MG, Brazil.
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Oliveira PM, Basqueira MS, Lima LB, Oliveira GS, Rosa SEA, Reis RS, Silveira CN, Muto NH, Cervato MC, Campregher PV. OTIMIZAÇÃO DA METODOLOGIA DE SEQUENCIAMENTO DO GENE TP53 PARA A DETECÇÃO DE MUTAÇÕES EM NEOPLASIAS HEMATOLÓGICAS. Hematol Transfus Cell Ther 2022. [DOI: 10.1016/j.htct.2022.09.932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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Oliveira GS, Lopes DRG, Andre C, Silva CC, Baglinière F, Vanetti MCD. Multispecies biofilm formation by the contaminating microbiota in raw milk. Biofouling 2019; 35:819-831. [PMID: 31558046 DOI: 10.1080/08927014.2019.1666267] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 04/29/2019] [Revised: 08/26/2019] [Accepted: 09/03/2019] [Indexed: 06/10/2023]
Abstract
Biofilms can be formed on the surfaces of dairy processing equipment and are a potential source of product contamination. This study evaluated the diversity of multispecies biofilms formed on stainless steel (SS) due to the contaminating microbiota in raw milk. Samples of raw milk were used: one was fresh milk and the other maintained in refrigerated bulk tanks for up to 48 h. The mesophilic aerobic contamination was ∼104 CFU ml-1 in fresh milk and 106 CFU ml-1 in bulk milk. SS coupons were kept immersed in the milk at 7 ±2 °C for 10 days, and every two days, the raw milk was changed for samples of the same origin collected on the current day. After incubation for 10 days, sessile cells in the biofilm reached 105 CFU cm-2 in the presence of fresh milk, and 106 CFU cm-2 in the presence of bulk milk. The genetic diversity analysis showed that Gammaproteobacteria and Bacilli predominated in the biofilms throughout the incubation of both milk samples and these biofilms showed a reduction in diversity over time. The main classes of bacteria found in these biofilms have representatives of great importance since many of them have spoilage potential.
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Affiliation(s)
- G S Oliveira
- Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
| | - D R G Lopes
- Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
| | - C Andre
- Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
| | - C C Silva
- Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
| | - F Baglinière
- Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
| | - M C D Vanetti
- Department of Microbiology, Federal University of Viçosa, Viçosa, Brazil
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Oliveira GS, Ulhoa CJ, Silveira MHL, Andreaus J, Silva-Pereira I, Poças-Fonseca MJ, Faria FP. An alkaline thermostable recombinant Humicola grisea var. thermoidea cellobiohydrolase presents bifunctional (endo/exoglucanase) activity on cellulosic substrates. World J Microbiol Biotechnol 2012; 29:19-26. [PMID: 23054694 DOI: 10.1007/s11274-012-1153-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Accepted: 08/09/2012] [Indexed: 11/25/2022]
Abstract
Humicola grisea var. thermoidea is a deuteromycete which secretes a large spectrum of hydrolytic enzymes when grown on lignocellulosic residues. This study focused on the heterologous expression and recombinant enzyme analysis of the major secreted cellulase when the fungus is grown on sugarcane bagasse as the sole carbon source. Cellobiohydrolase 1.2 (CBH 1.2) cDNA was cloned in Pichia pastoris under control of the AOX1 promoter. Recombinant protein (rCBH1.2) was efficiently produced and secreted as a functional enzyme, presenting a molecular mass of 47 kDa. Maximum enzyme production was achieved at 96 h, in culture medium supplemented with 1.34 % urea and 1 % yeast extract and upon induction with 1 % methanol. Recombinant enzyme exhibited optimum activity at 60 °C and pH 8, and presented a remarkable thermostability, particularly at alkaline pH. Activity was evaluated on different cellulosic substrates (carboxymethyl cellulose, filter paper, microcrystalline cellulose and 4-para-nitrophenyl β-D-glucopyranoside). Interestingly, rCBH1.2 presented both exoglucanase and endoglucanase activities and mechanical agitation increased substrate hydrolysis. Results indicate that rCBH1.2 is a potential biocatalyst for applications in the textile industry or detergent formulation.
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Affiliation(s)
- G S Oliveira
- Laboratório de Biotecnologia de Fungos, Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas, Campus II, Universidade Federal de Goiás, Goiânia, GO, CEP: 74001-970, Brazil
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Mainenti P, Oliveira GS, Valério JB, Daroda LSL, Daroda RF, Brandão G, Rosa LEB. Ameloblastic fibro-odontosarcoma: a case report. Int J Oral Maxillofac Surg 2009; 38:289-92. [PMID: 19150219 DOI: 10.1016/j.ijom.2008.11.025] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2007] [Revised: 05/15/2008] [Accepted: 11/24/2008] [Indexed: 11/19/2022]
Abstract
This paper reports one case, of an ameloblastic fibro-odontosarcoma (AFOS) affecting the mandible, in a 12-year-old girl. This neoplasm is a rare odontogenic neoplasm. To the authors' knowledge this is the fifteenth case of AFOS reported in English. The patient's chief complaint was a swelling in the face for 6 months. An incisional biopsy was performed diagnosing the case as an ameloblastic fibroma. After radiography ameloblastic fibro-odontoma was diagnosed. Computed tomography was performed and a stereolithography model made to plan the surgical procedures. A hemimandibulectomy followed by a vascularized fibular flap was then proposed. The surgery was uneventful. Microscopic features diagnosed an AFOS. After 23 months of close follow-up there is no sign of recurrence or metastasis. Dental implants were recently placed in the fibular flap.
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Affiliation(s)
- P Mainenti
- Department of Oral and Maxillofacial Surgery, Hospital Nove de Julho-Instituto Oncológico de Juiz de Fora, Juiz de Fora (MG), Brazil.
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