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Vendel AL, Bessa F, Alves VEN, Amorim ALA, Patrício J, Palma ART. Widespread microplastic ingestion by fish assemblages in tropical estuaries subjected to anthropogenic pressures. Mar Pollut Bull 2017; 117:448-455. [PMID: 28214011 DOI: 10.1016/j.marpolbul.2017.01.081] [Citation(s) in RCA: 140] [Impact Index Per Article: 20.0] [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: 09/05/2016] [Revised: 01/27/2017] [Accepted: 01/28/2017] [Indexed: 06/06/2023]
Abstract
Our aim was to quantify microplastic ingestion by fish assemblages in two tropical Brazilian estuaries and to evaluate whether biological and ecological factors influence the ingestion of microplastics by fish species. Of 2233 fish from both estuaries (from 69 species) examined in this study, 9% of the individuals (24 species) had microplastics in their gut contents. Microplastic ingestion occurred irrespective of fish size and functional group. The diet of fish species was analyzed based on prey items identified in the fish's full stomach contents and five feeding guilds were defined. Microplastics were common throughout all feeding guilds. Low (average ingestion values 1.06±0.30 items/total fish) but widespread occurrence among estuaries also indicates proliferation of microplastic pollution. Our findings highlight the need to focus on assemblage level studies to understand the real magnitude of the problem and emphasize the urgency of mitigation measures directed at microplastic pollution in estuarine ecosystems.
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Affiliation(s)
- A L Vendel
- Centre for Applied Biological and Social Sciences, Paraiba State University, Campus V, Rua Horacio Trajano, Cristo Redentor, 58070-450 João Pessoa, Paraiba, Brazil.
| | - F Bessa
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - V E N Alves
- Centre for Applied Biological and Social Sciences, Paraiba State University, Campus V, Rua Horacio Trajano, Cristo Redentor, 58070-450 João Pessoa, Paraiba, Brazil
| | - A L A Amorim
- Centre for Applied Biological and Social Sciences, Paraiba State University, Campus V, Rua Horacio Trajano, Cristo Redentor, 58070-450 João Pessoa, Paraiba, Brazil
| | - J Patrício
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - A R T Palma
- Department of Systematics and Ecology, Paraiba Federal University, Castelo Branco, 58051-900 João Pessoa, Paraiba, Brazil
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Dolbeth M, Vendel AL, Pessanha A, Patrício J. Functional diversity of fish communities in two tropical estuaries subjected to anthropogenic disturbance. Mar Pollut Bull 2016; 112:244-254. [PMID: 27546734 DOI: 10.1016/j.marpolbul.2016.08.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [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: 04/20/2016] [Revised: 08/02/2016] [Accepted: 08/03/2016] [Indexed: 06/06/2023]
Abstract
The functional diversity of fish communities was studied along the salinity gradient of two estuaries in Northeast Brazil subjected to different anthropogenic pressures, to gain a better understanding of the response of fish communities to disturbance. We evaluated functional complementarity indices, redundancy and analysed functional composition through functional groups based on combinations of different traits. The fish communities in both estuaries share similar functions performed by few functional groups. The upstream areas had generally lower taxonomic, functional diversity and lower redundancy, suggesting greater vulnerability to impacts caused by human activities. Biomass was slightly more evenly distributed among functional groups in the less disturbed estuary, but total biomass and redundancy were lower in comparison to the urbanized estuary. The present findings lend strength to the notion that the less disturbed estuary may be more susceptible to anthropogenic impacts, underscoring the need for more effective conservation measures directed at this estuary.
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Affiliation(s)
- M Dolbeth
- Postgraduate Program in Ecology and Conservation, Paraiba State University, 58429-500 Campina Grande, Brazil; Biology Department & Centre for Environmental and Marine Studies (CESAM), University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - A L Vendel
- Centre for Applied Biological and Social Sciences, Paraiba State University, Campus V, Horacio Trajano Street, 58070-450 João Pessoa, Paraiba, Brazil
| | - A Pessanha
- Postgraduate Program in Ecology and Conservation, Paraiba State University, 58429-500 Campina Grande, Brazil
| | - J Patrício
- MARE - Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, University of Coimbra, Portugal
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Alves VEN, Patrício J, Dolbeth M, Pessanha A, Palma ART, Dantas EW, Vendel AL. Do different degrees of human activity affect the diet of Brazilian silverside Atherinella brasiliensis? J Fish Biol 2016; 89:1239-1257. [PMID: 27328827 DOI: 10.1111/jfb.13023] [Citation(s) in RCA: 8] [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: 12/18/2015] [Accepted: 04/11/2016] [Indexed: 06/06/2023]
Abstract
The aim of the present study was to test whether different degrees of human activity affect the diet of the Brazilian silverside Atherinella brasiliensis in two tropical estuaries. Fish were collected along the salinity gradient of two Brazilian estuaries, the heavily impacted Paraiba Estuary and the less impacted Mamanguape Estuary, in the dry and wet seasons. The findings confirm that A. brasiliensis has generalist feeding habits and is able to change its diet under different environmental conditions. The results indicate clear spatial (i.e. along the estuarine gradient) changes in diet composition in both estuaries, but diet was also influenced by the degree of anthropogenic disturbance. During the wet season in the nutrient enriched Paraiba Estuary, when human activity was higher, the diet of A. brasiliensis was poorer and dominated by few dietary items, reflecting the potential impoverishment of prey items in this heavily disturbed system. The specimens collected in the most affected estuary also had a greater frequency of micro-plastics and parasites in their stomachs, reflecting the greater degree of human disturbance in the estuary. The present findings suggest that the diet of A. brasiliensis could be a useful indicator of changes in the ecological quality of these and other tropical estuaries of the western Atlantic Ocean.
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Affiliation(s)
- V E N Alves
- Centre for Applied Biological and Social Sciences, State University of Paraiba, Campus V, Horacio Trajano Street, Cristo Redentor, 58070-450, João Pessoa, Paraiba, Brazil
| | - J Patrício
- MARE-Marine and Environmental Sciences Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517, Coimbra, Portugal
| | - M Dolbeth
- Postgraduate Program in Ecology and Conservation, Paraiba State University, 58429-500, Campina Grande, Brazil
- Biology Department & CESAM, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - A Pessanha
- Postgraduate Program in Ecology and Conservation, Paraiba State University, 58429-500, Campina Grande, Brazil
| | - A R T Palma
- Department of Systematics and Ecology, Federal University of Paraiba, Cidade Universitaria, Castelo Branco, 58051-900, João Pessoa, Paraiba, Brazil
| | - E W Dantas
- Centre for Applied Biological and Social Sciences, State University of Paraiba, Campus V, Horacio Trajano Street, Cristo Redentor, 58070-450, João Pessoa, Paraiba, Brazil
- Postgraduate Program in Ecology and Conservation, Paraiba State University, 58429-500, Campina Grande, Brazil
| | - A L Vendel
- Centre for Applied Biological and Social Sciences, State University of Paraiba, Campus V, Horacio Trajano Street, Cristo Redentor, 58070-450, João Pessoa, Paraiba, Brazil
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Neto JM, Feio MJ, Teixeira H, Patrício J, Serra SRQ, Franco JN, Calapez AR, Constantino E. Transitional and freshwater bioassessments: one site, two perspectives? Mar Pollut Bull 2014; 78:153-164. [PMID: 24246653 DOI: 10.1016/j.marpolbul.2013.10.048] [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: 07/19/2013] [Revised: 10/22/2013] [Accepted: 10/28/2013] [Indexed: 06/02/2023]
Abstract
The freshwater-saltwater-transition-zone was analysed using two different sampling protocols and assessment methodologies, developed for freshwater and estuaries, to compare their agreement level in terms of community composition and quality assessments. The use of different protocols resulted in significant differences in macroinvertebrate communities, in index scores and initially in quality classes. After modifications in the sensitivity scores of the IBMWP and AMBI indices (average scores or the use of a score of the other index when both were present), the differences were largely reduced and quality classes became coincident for the assessments provided by IPtIs and BAT tools. Such harmonisation of quality assessments for adjacent water categories (e.g., large rivers vs. transitional waters), exemplified here as an harmonisation in one of the metrics comprised in the assessment tools, is essential as it has direct implications on the expansion and accomplishment of River Basin Management Plans committed by the Water Framework Directive.
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Affiliation(s)
- J M Neto
- IMAR - Institute of Marine Research, Marine and Environmental Research Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal.
| | - M J Feio
- IMAR - Institute of Marine Research, Marine and Environmental Research Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - H Teixeira
- IMAR - Institute of Marine Research, Marine and Environmental Research Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - J Patrício
- IMAR - Institute of Marine Research, Marine and Environmental Research Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - S R Q Serra
- IMAR - Institute of Marine Research, Marine and Environmental Research Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - J N Franco
- CIIMAR, Rua dos Bragas 269, 4450-123 Porto, Portugal
| | - A R Calapez
- IMAR - Institute of Marine Research, Marine and Environmental Research Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
| | - E Constantino
- IMAR - Institute of Marine Research, Marine and Environmental Research Centre, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal
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de Paz L, Patrício J, Marques JC, Borja A, Laborda AJ. Ecological status assessment in the lower Eo estuary (Spain). The challenge of habitat heterogeneity integration: a benthic perspective. Mar Pollut Bull 2008; 56:1275-1283. [PMID: 18508088 DOI: 10.1016/j.marpolbul.2008.04.027] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Revised: 03/26/2008] [Accepted: 04/17/2008] [Indexed: 05/26/2023]
Abstract
The implementation of the European Water Framework Directive (WFD) requires evaluation of the ecological status (ES) of benthic communities in coastal and transitional water systems, and the intercalibration of assessment methodologies therefore becomes a research challenge. Our aim was to test the suitability of applying the M-AMBI index to assess the status of the Eo estuary (northern coast of Spain). Our results showed that M-AMBI was influenced by the natural variability of benthic communities, and presented an apparent dependence on habitat characteristics. Consequently, the definition of homogeneous areas in transitional water systems should be based on the salinity gradient combined with other factors. To achieve an accurate ES assessment, habitat-specific reference conditions should then be defined prior to the application of M-AMBI; this necessitates dividing an estuary into several sections, which may be classified as different ESs. From this perspective, a novel approach to integrate habitat heterogeneity in a global ES assessment was tested.
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Affiliation(s)
- L de Paz
- Department of Biodiversity and Environmental Management, Zoology Area, University of Leon, Campus de Vegazana, 24125 León, Spain.
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Lopes MF, Catré D, Cabrita A, Pires A, Patrício J. Effect of traction sutures in the distal esophagus of the rat: a model for esophageal elongation by Foker's method. Dis Esophagus 2008; 21:570-3. [PMID: 18430183 DOI: 10.1111/j.1442-2050.2008.00816.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This study aimed to evaluate a rat model of esophageal elongation using traction sutures by the Foker's method. After esophageal division and closure of the distal segment at approximately 4 mm from the cardia, traction sutures were placed for progressive stretching until the 7(th) postoperative day in the experimental group (n = 10), whilst no traction sutures were placed in the esophagus of the control group (n = 10). Clinical outcome as well as macroscopic and microscopic esophageal morphology were evaluated in both groups. All rats survived the surgical procedure and the anesthetic recovery period. Disruption of sutures during the traction period occurred in 20% of the rats, which required reoperation. Integrity of the stretched esophagus was confirmed at autopsy in all animals. In contrast to the control group, the experimental group showed a significantly more elongated (average length 6.10 +/- 1.10 mm versus 3.91 +/- 0.17 mm, (P = 0.0001)) and thicker esophagus (average mass 35.9 +/- 3.31 mg versus 15.6 +/- 1.71 mg in the control group, P = 0.0001). Histopathological examination showed a relatively well preserved morphology of the stretched esophagus. These observations suggest that esophageal stretching by traction sutures can be undertaken reliably in a rat model, resulting in elongation and mass increase of the stretched esophagus without important tissue damage. As this model mimics Foker's method, it may serve as a useful model in further research studies and may be used to train in surgical technique.
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Affiliation(s)
- M F Lopes
- Laboratory of Experimental Pathology, University of Coimbra, School of Medicine, Portugal.
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Patrício J, Neto JM, Teixeira H, Marques JC. Opportunistic macroalgae metrics for transitional waters. Testing tools to assess ecological quality status in Portugal. Mar Pollut Bull 2007; 54:1887-96. [PMID: 17889036 DOI: 10.1016/j.marpolbul.2007.08.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2007] [Revised: 07/25/2007] [Accepted: 08/01/2007] [Indexed: 05/17/2023]
Abstract
Macroalgae communities constitute one of the ecological quality elements for the evaluation of the ecological quality status (EQS) of coastal and transitional waters, required to implement the WFD. While these algae are natural components of estuarine systems and play important roles in several estuarine processes, macroalgal blooms are of ecological concern because they can reduce the habitat quality. Several works are being carried out to set standard methods for monitoring macroalgae blooms, in order to develop tools to derive EQS based upon this biological quality element. The aim of this paper is to apply the methodology described by Scanlan et al. [Scanlan, C.M., Foden, J., Wells, E., Best, M.A., 2007. The monitoring of opportunistic macroalgal blooms for the water framework directive. Marine Pollution Bulletin 55, 162-171] to a series of data assembled in the south arm of the Mondego estuary (Atlantic coast of Portugal) considering two different ecological situations. Additionally, an alternative assessment method intended to be used when no biomass data are available was also tested. In general, both options captured the inter-annual variations in accordance with the system evolution. Option 2, less expensive and time-consuming, allowed an EQS evaluation with accurate results when biomass data were not available. The results suggest that sampling should be carried out from April to June.
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Affiliation(s)
- J Patrício
- IMAR - Institute of Marine Research, o Department of Zoology, Faculty of Sciences and Technology, University of Coimbra, 3004-517 Coimbra, Portugal.
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Lopes MF, Cabrita A, Ilharco J, Pessa P, Paiva-Carvalho J, Pires A, Patrício J. Esophageal replacement in rat using porcine intestinal submucosa as a patch or a tube-shaped graft. Dis Esophagus 2006; 19:254-9. [PMID: 16866856 DOI: 10.1111/j.1442-2050.2006.00574.x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This study compares the efficacy of porcine intestinal submucosa (SIS) patch graft versus SIS-tube graft in esophageal replacement, using a novel esophageal regeneration model. Clinical function, as well as macroscopic and microscopic morphology were evaluated in both SIS-treated groups. We performed semi-circumferential esophageal excision followed by repair of the defect using either a SIS-patch graft (group I) or segmental esophageal excision followed by a SIS-tube interposition graft (group II) in rats. The 28-day survival rate was significantly different between the SIS-treated groups (100% in group I vs. 0% in group II). Unlike the rats in group II, which died within the first postoperative month due to esophageal dysfunction, all surviving animals in group I resumed a normal solid diet within a few days after surgery, without signs of esophageal dysfunction and gained weight. Barium swallow studies showed no evidence of fistula, significant stenosis or diverticula. No hematological or serum biochemistry abnormalities were found. By day 150 the SIS patch was replaced by esophageal-derived tissues. In the rat model, a patch graft technique using SIS appeared to induce esophageal regrowth and provided an initial and long-term satisfactory function, while a tube-shaped graft technique using SIS was unsuccessful.
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Affiliation(s)
- M F Lopes
- Laboratory of Experimental Research, University Hospital of Coimbra, Portugal.
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Salas F, Patrício J, Marcos C, Pardal MA, Pérez-Ruzafa A, Marques JC. Are taxonomic distinctness measures compliant to other ecological indicators in assessing ecological status? Mar Pollut Bull 2006; 52:817-29. [PMID: 17165196 DOI: 10.1016/j.marpolbul.2006.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Assessing the ecological status, a concept implemented in the European Water Framework Directive [EC, 2000. Directive of the European Parliament and of the Council 2000/60/EC establishing a framework for community action in the field of water policy PE-CONS 3639/1/00, p. 72], requires the application of methods capable of distinguishing different levels of ecological quality. The Average Taxonomic Distinctness has been used as tool in this context, and we tested the robustness of Taxonomic Distinctness measures applying it in different scenarios (estuarine eutrophication, organic pollution, and re-colonisation after physical disturbance), analysing simultaneously its compliance to other types of ecological indicators. Results show that, in most of the case studies, only Total Taxonomic Distinctness was relatively satisfactory in discriminating between disturbed situations. Other Taxonomic Distinctness measures have not proved to be more sensitive than other ecological indicators (Shannon-Wiener, Margalef, and Eco-Exergy indices). Therefore, this approach does not seem to be particularly helpful in assessing systems' ecological status with regard to the WFD implementation.
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Affiliation(s)
- F Salas
- Department of Ecology and Hydrology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
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Salas F, Patrício J, Marcos C, Pardal MA, Pérez-Ruzafa A, Marques JC. Are taxonomic distinctness measures compliant to other ecological indicators in assessing ecological status? Mar Pollut Bull 2006; 52:162-74. [PMID: 16216282 DOI: 10.1016/j.marpolbul.2005.08.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2005] [Revised: 07/29/2005] [Accepted: 08/22/2005] [Indexed: 05/04/2023]
Abstract
Assessing the ecological status, a concept implemented in the European Water Framework Directive [Directive of the European Parliament and of the Council 2000/60/EC establishing a framework for community action in the field of water policy PE-CONS 3639/1/00, 72 p.], requires the application of methods capable of distinguishing different levels of ecological quality. Somerfield and Clarke [Marine Environmental Research 43 (2003) 145-156] proposed Average Taxonomic Distinctness to be used as tool in this context. We tested the robustness of Taxonomic Distinctness measures applying it in different scenarios (estuarine eutrophication, organic pollution, and re-colonisation after physical disturbance), analysing simultaneously its compliance to other types of ecological indicators. Results show that, in most of the case studies, only Total Taxonomic Distinctness was relatively satisfactory in discriminating between disturbed situations. Other Taxonomic Distinctness measures have not proved to be more sensitive than other ecological indicators (Shannon-Wiener, Margalef, and Eco-Exergy indices). Therefore, this approach does not seem to be particularly helpful in assessing systems' ecological status with regard to the WFD implementation.
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Affiliation(s)
- F Salas
- Department of Ecology and Hydrology, Faculty of Biology, University of Murcia, 30100 Murcia, Spain.
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Feigl G, Rosmarin W, Weninger B, Likar R, Hoogland PV, Groen RJM, Vorster W, Grobbelaar M, Muller CJF, du Toit DF, Moriggl B, Greher M, Klauser A, Eichenberger U, Prades JM, Timoshenko A, Faye M, Martin CH, Baroncini M, Baiz H, Ben Henda A, Fontaine C, Baksa G, Toth M, Patonay L, Gonçalves-Ferreira A, Gonçalves C, Neto L, Fonseca T, Gaspar H, Rino J, Fernandes M, Fernandes P, Cardoso H, Miranda B, Rego J, Hamel A, Guillouche P, Hamel O, Garçon M, Lager S, Blin Y, Armstrong O, Robert R, Rogez JM, Le Borgne J, Kahilogulları G, Comert A, Esmer AF, Tuccar E, Tekdemir I, Ozdemir M, Odabasi AB, Elhan A, Anand MK, Singh PR, Verma M, Raibagkar CJ, Kim HJ, Kwak HH, Hu KS, Francke JP, Macchi V, Porzionato A, Parenti A, Metalli P, Zanon GF, De Caro R, Bernardes A, Dionísio J, Messias P, Patrício J, Apaydin N, Uz A, Evirgen O, Shim KS, Park HD, Youn KH, Cajozzo M, Bartolotta T, Cappello F, Sunseri A, Romeo M, Altieri G, Modica G, La Barbera G, La Marca G, Valentino F, Valentino B, Martino A, Dees G, Kleintjes WA, Williams R, Herpe B, Leborgne J, Lagier S, Cordova A, Pirrello R, Moschella F, Mahajan MV, Bhat UB, Abhayankar SV, Ambiye MV, Kachlík DK, Stingl JS, Sosna BS, Fára PF, Lametschwandtner AL, Minnich BM, Straka ZS, Ifrim M, Ifrim CF, Botea M, Latorre R, Sun F, Henry R, Crisóstomo V, Cano FG, Usón J, Mtez-Gomaríz F, Climent S, Hurmusiadis V, Barrick S, Barrow J, Clifford N, Morgan F, Wilson R, Wiseman L, Fogg OA, Loukas M, Tedman RA, Capaccioli N, Capaccioli L, Mannini A, Guazzi G, Mangoni M, Paternostro F, Vagnoli PT, Gulisano M, Pacini S, Grignon B, Jankowski R, Hennion D, Zhu X, Roland J, Mutiu G, Tessitore V, Uzzo ML, Bonaventura G, Milio G, Spatola GF, Ilkan T, Selcuk T, Mustafa AM, Hamdi CH, Emel TC, Faruk U, Hamdi CH, Bulent G, Báča V, Doubková A, Kachlík D, Stingl J, Saylam C, Kitiş Ö, Üçerler H, Manisahı E, Gönül AS, Dashti GHR, Nematbaksh M, Mardani M, Hami J, Rezaian M, Radmehr B, Akbari M, Paryani MR, Gilanpour H, Zamfir C, Zamfir M, Lupusoru C, Raileanu C, Lupusoru R, Bordei P, Iliescu D, Şapte E, Adam S, Baker C, Sergi C, Barberini F, Ripani M, Di Nitto V, Zani A, Magnosi F, Heyn R, Familiari G, Elgin U, Demiryurek D, Berker N, Ilhan B, Simsek T, Batman A, Bayramoglu A, Fogg QA, Bartczak A, Kamionek M, Kiedrowski M, Fudalej M, Wagner T, Artibani W, Tiengo C, Taglialavoro G, Mazzoleni F, Scapinelli R, Ardizzone E, Cannella V, Peri D, Pirrone R, Peri G. Platform session. Surg Radiol Anat 2005. [DOI: 10.1007/bf03371475] [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: 11/28/2022]
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Bernardes A, Dionísio J, Diogo D, Coelho P, Patrício J. A simple intra-operative maneuver to decrease a duodenal ulcer hemorrhage temporarily: description and anatomical bases. Surg Radiol Anat 2004; 27:79-85. [PMID: 15592830 DOI: 10.1007/s00276-004-0296-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/28/2003] [Accepted: 09/22/2004] [Indexed: 10/26/2022]
Abstract
Intraoperative hemostatic suture to treat a bleeding duodenal ulcer is sometimes difficult when there is massive hemorrhage. The aims of this paper are: (1) to describe a practical and easy intraoperative procedure which quickly decreases a massively bleeding duodenal ulcer, allowing the surgeon to identify the bleeding site clearly and obtain definitive hemostasis by suturing the involved vessels with a low risk of common bile duct lesion; and (2) to study in cadavers the anatomical basis of this surgical procedure already successfully performed on patients. Fourteen patients with massive duodenal ulcer bleeding, after unsuccessful endoscopic hemostasis, were operated on and included in this study. After surgical anterior gastroduodenotomy, the surgeon introduced a finger in a downward and forward direction in the bursa omentalis vestibule through the omental foramen. This simple and quick procedure decreased hemorrhage by compressing the gastroduodenal artery against the first part of the posterior surface of the duodenum. Twenty-four fresh blocks of normal tissue were removed from cadavers and were injected with silicone rubber through the common hepatic artery. The distance between the gastroduodenal artery and the omental foramen was measured. With this maneuver the surgeon can clearly see the exact bleeding site and perform an adequate suture with a minor risk of common bile duct lesion.
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Affiliation(s)
- A Bernardes
- Normal Human Anatomy Institute, Coimbra University, Coimbra, Portugal.
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Abstract
OBJECTIVES The introduction of the colonic J-pouch has markedly improved the functional outcome of restorative rectal cancer surgery. However colonic J-pouch surgery can be problematic and may present some late evacuatory problems. To overcome these limitations a novel pouch has been proposed: the transverse coloplasty pouch. The purpose of our study was to compare the functional outcomes of these two different types of pouches--the transverse coloplasty pouch (TCP) and the colonic J-pouch (CJP)--during the first 12 months postoperatively. PATIENTS AND METHODS A prospective randomized trial was conducted in which a total of 30 patients with mid and low rectal cancer were submitted either to a transverse coloplasty pouch or a colonic J-pouch. Clinical defaecatory function was assessed and anorectal physiological assessment was carried out, pre-operatively and at 3, 6 and 12 months postoperatively, by means of a standard clinical questionnaire and by anorectal manometry. RESULTS No statistically significant differences were found between the two groups regarding bowel function. The postoperative frequency of daily bowel movements was lower in the TCP group in all the phases of the study (3.9 vs. 4.1 at 3 months; 3.1 vs. 3.4 at 6 months; 2.1 vs. 2.8 at 12 months), the same occurring with fragmentation (33% vs. 40% at 3 months; 26.6%vs. 33.3% at 6 months; 7.1%vs. 14.3% at 12 months). Less urgency was also seen in the TCP group during the first 6 months (20%vs. 26.7%), with identical values at 12 months (14.3% vs. 14.3%). No significant differences were also found concerning incontinence grading and scoring, with TCP patients having less nocturnal leaks. At one year two CJP patients (14.3%) needed the use of enemas to evacuate the pouch and provoke defaecation, a problem never seen in TCP patients. The anorectal manometry data was similar in both types of pouches. The local complication rates were also identical in the two groups (20%); more anastomotic leaks were seen in TCP patients (13.2% vs. 6.6%), without reaching a statistical significance. CONCLUSION The transverse coloplasty pouch has similar functional results but fewer evacuation problems than the J-Pouch, making it a safe and reliable alternative to the colonic J-pouch.
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Affiliation(s)
- J M Pimentel
- Department of Surgery I, Unit of Coloproctology and Gastroenterology Department, University Hospital of Coimbra, Avenue Bissaya Barreto 3000-075, Coimbra, Portugal.
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14
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Dias M, Cabrita S, Sousa E, França B, Patrício J, Oliveira C. Benign and malignant mammary tumors induced by DMBA in female Wistar rats. EUR J GYNAECOL ONCOL 1999; 20:285-8. [PMID: 10475125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
This study pretends to characterize 7, 12-dimetylbenz[a]anthracene-induced benign and malignant tumors. One hundred and twenty female Wistar rats were randomly allocated to two groups: Control Group and Induction Group; IG animals were given a single dose of DMBA and killed 24 weeks after. Other tumors besides breast tumors were diagnosed, mainly tumors of the salivary glands and ovarian benign epithelial tumors. Incidence of breast disorders was about 60%. Macroscopic mammary tumors varied in dimension from 2 mm to 55 mm. Malignant breast tumors (n = 56) were essentially invasive ductal carcinomas (91.1%), G1 (92.2%), presenting histologic characteristics of good prognosis. Predominant benign breast disorders consisted of glandular (68.6%) and atypical (20%) hyperplasias reproducing histologic types of human breast diseases. Different individual susceptibility to DMBA apparently occurs; while some rats never developed neoplasias, others exhibited several tumors.
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MESH Headings
- 9,10-Dimethyl-1,2-benzanthracene
- Animals
- Carcinogenicity Tests
- Carcinoma, Ductal, Breast/chemically induced
- Carcinoma, Ductal, Breast/epidemiology
- Carcinoma, Ductal, Breast/pathology
- Carcinoma, Intraductal, Noninfiltrating/chemically induced
- Carcinoma, Intraductal, Noninfiltrating/epidemiology
- Carcinoma, Intraductal, Noninfiltrating/pathology
- Female
- Fibroadenoma/chemically induced
- Fibroadenoma/epidemiology
- Fibroadenoma/pathology
- Hyperplasia/chemically induced
- Hyperplasia/epidemiology
- Hyperplasia/pathology
- Incidence
- Mammary Neoplasms, Experimental/chemically induced
- Mammary Neoplasms, Experimental/epidemiology
- Mammary Neoplasms, Experimental/pathology
- Papilloma, Intraductal/chemically induced
- Papilloma, Intraductal/epidemiology
- Papilloma, Intraductal/pathology
- Rats
- Rats, Wistar
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Affiliation(s)
- M Dias
- Department of Gynaecology, University Hospital, Coimbra, Portugal
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15
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Abstract
One of the factors possibly responsible for leakage at a colo-rectal anastomosis is a deficient blood-supply. The rectal circulation was studied in 30 cadavers by injection of colloidal barium sulfate with colored gelatin into the hypogastric and inferior mesenteric arteries. It was noted that there was uniformity of supply to the wall of the organ; the blood-supply derived from the hypogastric arteries in subjects over 50 years of age was minor; the predominant blood-supply was derived from the superior rectal artery. These findings suggest that the hypogastric arteries usually provide only a minor supply in persons over 50 years of age and that obstruction of the inferior mesenteric artery associated with the impaired blood-supply inherent in the rectal dissection must be included in the factors responsible for leakage at the colorectal anastomosis.
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Affiliation(s)
- J Patrício
- Department of Surgery, Hospitais da Universidade de Coimbra, Portugal
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16
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Patrício J, Bernardtes A, Nuno D, Falcäo F, Silveira L. Anatomie chirurgicale de la vascularisation artérielle du rectum. Surg Radiol Anat 1988. [DOI: 10.1007/bf02345735] [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: 11/28/2022]
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