Effect of flunixin meglumine on the endocrine control of luteolysis in the porcine estrous cycle.     

N Cort  H Kindahl 《Acta veterinaria Scandinavica》1992,33(3):245-247

  相似文献   

Plasma saluretic activity: its nature and relation to oxytocin analogs   总被引：4，自引：0，他引：4  

E Sedláková  B Lichardus  J H Cort 《Science (New York, N.Y.)》1969,164(879):580-582

Plasma natriuretic activity was evoked in cows and dogs by infusion of saline with or without dextran. Deproteinized samples were fractionated on both Sephadex and Bio-Gel columns; the activity was separated, the approximate molecular weight being in the region of 1000. Incubation with chymotrypsin destroyed the activity, suggesting that it might be a polypeptide. A similar activity in blood resulted from intracarotid injection of either oxytocin or either of two synthetic analogs. Possibly the latter are saluretic by virtue of a releasing action on some intracranial structure for another natriuretic peptide.  相似文献   

Congenital erythropoietic porphyria in an African hedgehog (Atelerix albiventris).     

Carlos Wolff  Paulina Corradini  Galaxia Cortés 《Journal of zoo and wildlife medicine》2005,36(2):323-325

A 6-mo-old, male African hedgehog (Atelerix albiventris) presented with a history of pink urine and demonstrating pink-colored teeth and mild hepatomegaly on examination. Urinalysis revealed no physical, chemical, or cellular abnormalities other than a pink color and fluorescence under ultraviolet light (UV). Also under UV, intense fluorescence of teeth, feet, and spines was noted. Porphyria was suspected. Spectrophotometric evaluation of urine showed extremely elevated levels of copro- and uroporphyrins. Analysis of the urine by thin-layer chromatography showed an abnormal pattern of excreted porphyrin intermediates. Urine high-performance thin-layer chromatography showed that excreted porphyrins were 90-95% of the type-I isomeric form, suggestive of congenital erythropoietic porphyria.  相似文献   

Oestrus Synchronization Treatment Induces Histomorphological Changes on the Uterine Tube Epithelium of the Gilt          下载免费PDF全文

M. L. Juárez‐Mosqueda  S. R. Anzaldúa Arce  I. Palma Lara  C. García Dalmán  M. A. Cornejo Cortés  A. Córdova Izquierdo  H. Villaseñor Gaona  M. E. Trujillo Ortega 《Anatomia, histologia, embryologia》2015,44(6):441-451

The aim of this study was to determine the histomorphological changes that occurred in response to two treatments for oestrus synchronization in three different regions of the gilt's uterine tubes epithelium: the ampulla (AMP), ampulla–isthmic junction (AIJ) and isthmus (IST). Nine prepuberal gilts were divided into three groups (n = 3): (1) eCG 400 IU and hCG 200 IU (eCG/hCG), (2) progesterone agonist (P4) and (3) control group. The number of secretory cells (stained with periodic acid–Schiff reaction or PAS‐positive cells) decreased in the AMP in the P4 treated group when compared to the control group, whereas, no difference was observed in the number of PAS‐negative cells in the AMP of the three groups. A significant decrease in the number of PAS‐positive cells was observed in the AIJ and IST of the P4 treated group when compared to the eCG/hCG and control groups. An increase in the number of PAS‐negative cells was observed in the AIJ and IST in the P4 treated group. The epithelium height in the AMP and AIJ was increased in the eCG/hCG group when compared to the control and P4 groups. In this last group, we observed a reduced height compared with the other two groups for the AIJ. In the IST, there were no significant changes in the epithelium height of the control or the other two groups (eCG/hCG and P4). The epithelial cells of the P4 treated group had the least amount of cytoplasmic granules and the lowest intensity of PAS staining in the AMP, AIJ and IST. Animals treated with eCG/hCG showed an intermediate number of cytoplasmic granules and intensity in all regions evaluated. These data show that P4 treatment for synchronization induces a significant (P < 0.001) decrease of PAS‐positive cells and staining intensity of cytoplasmic granules in the different regions studied and an increased number of PAS‐negative cells in the AIJ and IST epithelium. Moreover, eCG/hCG treatment increased the height of the epithelium in the AMP and AIJ, while in this last region, the P4 treatment decreased the epithelium height. These results show that synchronization treatments with P4 and in a smaller proportion with eCG/hCG can modify the amount of PAS‐positive and PAS‐negative cells, and the epithelium height. This has influence in the secretory activity of the epithelium and possibly alters the fluid microenvironment of the gilt's uterine tube. The biological impact of regional variations in the epithelial cells of the gilt′s uterine tube needs further investigation to understand the implications that the reproductive processes can have in the uterine tube.  相似文献   

Serological survey of Leishmania infantum and Trypanosoma cruzi in dogs from urban areas of Brazil and Colombia     

Rosypal AC  Cortés-Vecino JA  Gennari SM  Dubey JP  Tidwell RR  Lindsay DS 《Veterinary parasitology》2007,149(3-4):172-177

Leishmania infantum and Trypanosoma cruzi are zoonotic parasites that are endemic throughout many parts of Latin America. Infected dogs play an important role in transmission of both parasites to humans. A serological survey of Leishmania and Trypanosoma infection was conducted on 365 dogs from S?o Paulo, Brazil and Bogatá, Colombia, South America. Serum samples were examined by the indirect immunofluorescent antibody test (IFAT). Anti-Leishmania IgG antibodies were detected in 5 of 107 from Brazil (4.7%) and in 4 of 258 dogs (1.6%) from Colombia. Titers ranged from 1:25 to 1:100. Anti-T. cruzi antibodies were not detected in any of the dogs from either Brazil or Colombia. The results show a low prevalence of anti-Leishmania antibodies and no antibodies against T. cruzi in these canine populations. Our study suggests that dogs play a limited role in the spread of L. infantum and T. cruzi in these urban areas of Brazil and Colombia.  相似文献   

Evaluation of bactericidal activity of 7-arylaminoisoquinolin-5,8-quinones against Piscirickettsia salmonis     

Beatriz Valenzuela  Almendra Benavides  Francisco Leyton  Franco Moreno  Marcos Cortés  Juana A. Ibacache 《Journal of fish diseases》2023,46(1):85-89

  相似文献   

You can swim but you can't hide: the global status and conservation of oceanic pelagic sharks and rays   总被引：2，自引：0，他引：2  

Nicholas K. Dulvy  Julia K. Baum  Shelley Clarke  Leonard J. V. Compagno  Enric Cortés  Andrés Domingo  Sonja Fordham  Sarah Fowler  Malcolm P. Francis  Claudine Gibson  Jimmy Martínez  John A. Musick  Alen Soldo  John D. Stevens  Sarah Valenti 《水产资源保护:海洋与淡水生态系统》2008,18(5):459-482

• 1. Fishing spans all oceans and the impact on ocean predators such as sharks and rays is largely unknown. A lack of data and complicated jurisdictional issues present particular challenges for assessing and conserving high seas biodiversity. It is clear, however, that pelagic sharks and rays of the open ocean are subject to high and often unrestricted levels of mortality from bycatch and targeted fisheries for their meat and valuable fins.
• 2. These species exhibit a wide range of life‐history characteristics, but many have relatively low productivity and consequently relatively high intrinsic vulnerability to over‐exploitation. The IUCN — World Conservation Union Red List criteria were used to assess the global status of 21 oceanic pelagic shark and ray species.
• 3. Three‐quarters (16) of these species are classified as Threatened or Near Threatened. Eleven species are globally threatened with higher risk of extinction: the giant devilray is Endangered, ten sharks are Vulnerable and a further five species are Near Threatened. Threat status depends on the interaction between the demographic resilience of the species and intensity of fisheries exploitation.
• 4. 4. Most threatened species, like the shortfin mako shark, have low population increase rates and suffer high fishing mortality throughout their range. Species with a lower risk of extinction have either fast, resilient life histories (e.g. pelagic stingray) or are species with slow, less resilient life histories but subject to fisheries management (e.g. salmon shark).
• 5. 5. Recommendations, including implementing and enforcing finning bans and catch limits, are made to guide effective conservation and management of these sharks and rays.

Copyright © 2008 John Wiley & Sons, Ltd.  相似文献   

Distribution patterns and population structure of the blue shark (Prionace glauca) in the Atlantic and Indian Oceans          下载免费PDF全文

Rui Coelho  Jaime Mejuto  Andrés Domingo  Kotaro Yokawa  Kwang‐Ming Liu  Enric Cortés  Evgeny V. Romanov  Charlene da Silva  Fábio Hazin  Freddy Arocha  Aldrin Masawbi Mwilima  Pascal Bach  Victoria Ortiz de Zárate  William Roche  Pedro G. Lino  Blanca García‐Cortés  Ana M. Ramos‐Cartelle  Rodrigo Forselledo  Federico Mas  Seiji Ohshimo  Dean Courtney  Philippe S. Sabarros  Bernardo Perez  Ciara Wogerbauer  Wen‐Pei Tsai  Felipe Carvalho  Miguel N. Santos 《Fish and Fisheries》2018,19(1):90-106

The blue shark (Prionace glauca) is the most frequently captured shark in pelagic oceanic fisheries, especially pelagic longlines targeting swordfish and/or tunas. As part of cooperative scientific efforts for fisheries and biological data collection, information from fishery observers, scientific projects and surveys, and from recreational fisheries from several nations in the Atlantic and Indian Oceans was compiled. Data sets included information on location, size and sex, in a total of 478,220 blue shark records collected between 1966 and 2014. Sizes ranged from 36 to 394 cm fork length. Considerable variability was observed in the size distribution by region and season in both oceans. Larger blue sharks tend to occur in equatorial and tropical regions, and smaller specimens in higher latitudes in temperate waters. Differences in sex ratios were also detected spatially and seasonally. Nursery areas in the Atlantic seem to occur in the temperate south‐east off South Africa and Namibia, in the south‐west off southern Brazil and Uruguay, and in the north‐east off the Iberian Peninsula and the Azores. Parturition may occur in the tropical north‐east off West Africa. In the Indian Ocean, nursery areas also seem to occur in temperate waters, especially in the south‐west Indian Ocean off South Africa, and in the south‐east off south‐western Australia. The distributional patterns presented in this study provide a better understanding of how blue sharks segregate by size and sex, spatially and temporally, and improve the scientific advice to help adopt more informed and efficient management and conservation measures for this cosmopolitan species.  相似文献   

Effects of diets with fermented duckweed (Lemna sp.) on growth performance and gene expression in the Pacific white shrimp,Litopenaeus vannamei     

Ma. del Carmen Flores-Miranda  Antonio Luna-González  Diana Verónica Cortés-Espinosa  Píndaro Álvarez-Ruiz  Edilmar Cortés-Jacinto  Francisco Javier Valdez-González  Ruth Escamilla-Montes  Héctor Abelardo González-Ocampo 《Aquaculture International》2015,23(2):547-561

  相似文献   

The Mexico City milk supply system: Structure, function, and sustainability     

Hermenegildo Losada  Richard Bennett  José Cortés  Jorge Vieyra  Ramon Soriano 《Agriculture and Human Values》2001,18(3):305-317

This paper examines the presentsupply of milk to the urban inhabitant ofMexico City, paying particular attention tocurrent themes of market liberalization,sustainable development, and democratization.This is facilitated by an infrastructure withinand without the metropolitan zone and coexistswith a large importation of milk from theinternational market, much being sold at lowprices to low income groups. Reduced statequality regulation has enabled the use of theseimports in industrialized milk products. Giventhe integration of international and nationalsources in milk supply, simply increasingMexican production will not reduce imports, andthe NAFTA trade pact is unlikely to address theresource exploitation problems faced bynational production.(Researcher from the UK sponsored by the exchange CONACYT-British Council)  相似文献