Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/43640
Title: Plankton biomass and larval fish abundance prior to and during the El Niño period of 1997-1998 along the central Pacific coast of México
Author: Gancedo, M.
Ruiz-Corro, L.
Salazar-Montes, A.
Rincon, A.R.
Armendariz-Borunda, J.
Issue Date: 2008
Abstract: Background: Pirfenidone (PFD), a new antifibrotic and antiinflammatory agent, prevents and resolves fibrous tissue. This study evaluated the effect of PFD on adverse events in mammary implants using an animal model. Mammary implantation, the most frequent aesthetic surgery, may present several complications after surgery such as swelling, capsule contracture, hardness, and pain. Methods: Wistar rats underwent submammary implantation with either smooth or textured silicone gel implants and were administrated 200 mg/kg of PFD daily. The control group received saline. The animals were killed at 8 weeks. The capsular tissue of both implants was removed for histologic and molecular analyses. Results: Typical postaugmentation periimplant capsules with opacity on adjacent tissues developed 8 weeks after silicone implantation. No significant differences were observed between the textured and smooth implants in any analyzed parameter. Clearly, PFD reduced capsule thickness around submmamary tissue, fibroblast-like cell proliferation, and recruitment of inflammatory cells. The total cell numbers per field were reduced as well. In contrast, the control group presented abundant mononuclear cell infiltration and fibroblast-like cell proliferation. The total content of collagen in the PFD group was 50% less than in the control group. Fibroblast cells displayed 45% less activated phenotype in the PFD group than in the control group, as determined by immunohistochemistry techniques. In the PFD animals, transforming growth factor-? (TGF-?) decreased 85% and collagen 1 gene expression 60%, compared with the control group. Conclusion: The findings show a positive effect of PFD on mammary contracture in 10 rats. Despite the small number of animals, the differences found in 10 control rats encourage the authors to propose a larger study later and to suggest PFD as a potential preventive strategy in human mammary implantation surgery. " 2007 Springer Science+Business Media, LLC.",,,,,,"10.1007/s00266-007-9051-4",,,"http://hdl.handle.net/20.500.12104/43640","http://www.scopus.com/inward/record.url?eid=2-s2.0-37849026683&partnerID=40&md5=6814ea970d78daaa3d68139849f64872",,,,,,"1",,"Aesthetic Plastic Surgery",,"32
40",,"32",,"Scopus
WOS",,,,,,"Capsular contracture; Mammary implantation; PFD; Pirfenidone",,,,,,"Pirfenidone prevents capsular contracture after mammary implantation",,"Article" "45429","123456789/35008",,"Franco-Gordo, C., Centro de Ecología Costera, Universidad de Guadalajara, 48980, México, Mexico, Depto. de Bioloxía Animal, Bioloxia Vexetal e Ecoloxia, Universidade Da Coruña, Camp. da Zapateira s/n. A Coruna, 15071, Spain; Godínez-Domínguez, E., Centro de Ecología Costera, Universidad de Guadalajara, 48980, México, Mexico, Depto. de Bioloxía Animal, Bioloxia Vexetal e Ecoloxia, Universidade Da Coruña, Camp. da Zapateira s/n. A Coruna, 15071, Spain; Filonov, A.E., Departamento de Física, CUCEI, Universidad de Guadalajara, Mexico; Tereshchenko, I.E., Departamento de Física, CUCEI, Universidad de Guadalajara, Mexico; Freire, J., Depto. de Bioloxía Animal, Bioloxia Vexetal e Ecoloxia, Universidade Da Coruña, Camp. da Zapateira s/n. A Coruna, 15071, Spain",,"Franco-Gordo, C.
Godinez-Dominguez, E.
Filonov, A.E.
Tereshchenko, I.E.
Freire, J.",,"2004",,"The temporal and spatial distributions of zooplankton biomass and larval fish recorded during 27 months (December 1995-December 1998) off the Pacific coast of central México are analyzed. A total of 316 samples were obtained by surface (from 40-68 to 0 m) oblique hauls at 12 sampling sites using a Bongo net. Two well-defined periods were observed: a pre-ENSO period (December 1995-march 1997) and an ENSO event (July 1997-September 1998) characterized by impoverishment of the pelagic habitat. The highest biomass concentrations occurred at coastal stations during the pre-ENSO period. During the El Niño period no spatial patterns were found in coastal waters. The months with highest biomass were those in which the lowest sea surface temperature (SST) occurred (January-May), and this pattern was also observed during the ENSO period. A typical, although attenuated, seasonal environmental pattern with enhanced phytoplankton (diatoms and dinoflagellates) was prevalent during the El Niño event in nearshore waters. During the El Niño period the phytoplankton was mainly small diatoms (microphytoplankton), while dinoflagellates were practically absent. The most parsimonious generalized linear models explaining spatial and temporal distribution of larval fish species included the ENSO index (MEI), upwelling index (UI) and distance to the coast. The environmental variability defined on an interannual time-scale by the ENSO event and the seasonal hydroclimatic pattern defined by the UI (intra-annual-scale) controlled the ecosystem productivity patterns. The small-scale distribution patterns (defined by a cross-shore gradient) of plankton were related to the hydroclimatic seasonality and modulated by interannual anomalies. " 2004 Elsevier Ltd. All rights reserved.
URI: http://hdl.handle.net/20.500.12104/43650
http://www.scopus.com/inward/record.url?eid=2-s2.0-12344289750&partnerID=40&md5=e5c268dd3fd5941ece98a9bd9a522a18
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