Sea Surface Temperature Modulates Physiological and Immunological Condition of Octopus maya

This study was designed to determine if the physiological and immunological condition of O. maya show a relationship with variation of the sea surface temperature associated with the seasonal upwelling. A total of 117 organisms were collected from February to July in three fishing zones: Ria Lagartos located in the upwelling zone; Seybaplaya corresponding to the non-upwelling zone, and Sisal, the transitional zone. The organisms were examined in terms of physiological (total weight, the weight of the gonad and digestive gland, osmotic pressure, hemocyanin, protein, glucose and cholesterol concentrations in plasma), and immunological variables (total hemocyte count, hemagglutination, phenoloxidase system activity, total phenoloxidase plasma activity, and lysozyme activity). Multivariate one-way ANOVA showed overall significant differences between groups of octopus by month/ zone of capture, indicating that the physiological-immunological condition of O. maya is related to a temperature gradient. Wild octopuses captured at the upwelling zone and the transitional zone (Ría Lagartos and Sisal) in February, March, and April -with temperatures lower than 27 °C- were in better conditions: larger size, high concentrations of hemocyanin, and low activity of the phenoloxidase system. Octopuses captured in the warmer waters (28 to 30 °C) of the non-upwelling and transitional zones (Seybaplaya and Sisal) during June and July, could be reflecting the metabolic stress throug...
Source: Frontiers in Physiology - Category: Physiology Source Type: research

Related Links:

This study evaluates the antioxidant capacity of Sideritis hyssopifolia to design a feed whose hypolipidemic effects are proven in cholesterol-fed New Zealand rabbits. Antioxidant action was assessed in infusions, which were prepared with 1 or 3 g of plant in 200 mL of water by using an ABTS assay and expressed as Ascorbic acid Equivalent Antioxidant Capacity (AEAC). Aqueous infusions with infusion times of 10 min and prepared with 3 g plant exhibited the strongest antioxidant activity. Sideritis hyssopifolia showed an intermediate antioxidant capacity for the concentrations and times of the infusion tested. According to o...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
Izabella Pereira da Silva Bezerra1†, Gabriel Oliveira-Silva1†, Danielle Sophia Ferreira Santos Braga1, Mirian França de Mello1, Juliana Elena Silveira Pratti1, Joyce Carvalho Pereira1, Alessandra Marcia da Fonseca-Martins1, Luan Firmino-Cruz1, Diogo Maciel-Oliveira1, Tadeu Diniz Ramos1, André Macedo Vale1, Daniel Claudio Oliveira Gomes2, Bartira Rossi-Bergmann1 and Herbert Leonel de Matos Guedes1,3* 1Instituto de Biofísica Carlos Chagas Filho, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil 2Núcleo de Doenças Infecciosas/Núcleo de Biotecnologia,...
Source: Frontiers in cellular and infection microbiology - Category: Microbiology Source Type: research
In conclusion, this Research Topic includes a wide range of interdisciplinary research work contributing to the ultimate goals of augmenting the existing knowledge and fostering the scientific field of ethnopharmacology in Central and Eastern Europe, as well as globally. This research topic successfully gathered comprehensive interdisciplinary information in the field of ethnopharmacology from the field surveys to standardization and elucidation of molecular mechanisms of action of natural products. Moreover, with consideration of the existing challenges in the field of drug discovery form medicinal plants, this research t...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Publication date: Available online 22 January 2019Source: Phytochemistry LettersAuthor(s): Agata Rogowska, Michał Styczyński, Cezary Pączkowski, Anna Szakiel, Miguel Ângelo A. Pinheiro de CarvalhoAbstractTamus edulis Lowe is an endemic perennial plant belonging to Dioscoreaceae family. The plant has long climbing stems, ovate leaves, flowers in spikes, fleshy red berries and long tuberous roots. Young shoots and tuberous roots of T. edulis were used traditionally for nourishment and as a herbal medicine. Leaves and roots analyzed in the present study were collected in the northwest of Madeira island. The GC–...
Source: Phytochemistry Letters - Category: Chemistry Source Type: research
CONCLUSIONS Parasitological testing for S. mansoni should be indicated in endemic areas when this pattern of alterations is detected.
Source: Revista da Sociedade Brasileira de Medicina Tropical - Category: Tropical Medicine Source Type: research
Malaria can progress to malaria-associated ARDS (MA-ARDS), with a mortality rate of up to 80%. Since it is caused by sequestration of parasitized cells in the lung and a deregulated host immune response, the use of an antimalarial drug associated with an anti-inflammatory compound could improve MA-ARDS outcomes. We evaluated the effects of Rosuvastatin (ROSU), a statin with immunomodulatory properties largely used for treatment of cardiovascular diseases, and its association with dihydroartemisinin (DHA) in an experimental model. C57/BL6 mice were infected with Plasmodium berghei NK65, treated with ROSU(3mg/Kg), DHA(20mg/K...
Source: European Respiratory Journal - Category: Respiratory Medicine Authors: Tags: Mechanisms of Lung Injury and Repair Source Type: research
Publication date: Available online 22 August 2018Source: Journal of EthnopharmacologyAuthor(s): Angela Márcia Selhorst e Silva Beserra, Wagner Vilegas, Marcelo Marucci Pereira Tangerina, Sérgio Donizeti Ascêncio, Ilsamar Mendes Soares, Eduarda Pavan, Amilcar Sabino Damazo, Reginaldo Vicente Ribeiro, Domingos Tabajara de Oliveira MartinsAbstractEthnopharmacological relevanceTerminalia argentea Mart. (Combretaceae), known mainly as “capitão”, is a native tree, not endemic, that occurs in the Amazon, Caatinga, Cerrado and Atlantic Forest in Brazil. Leaf infusion is popularly mentioned by...
Source: Journal of Ethnopharmacology - Category: Drugs & Pharmacology Source Type: research
Fight Aging! provides a weekly digest of news and commentary for thousands of subscribers interested in the latest longevity science: progress towards the medical control of aging in order to prevent age-related frailty, suffering, and disease, as well as improvements in the present understanding of what works and what doesn't work when it comes to extending healthy life. Expect to see summaries of recent advances in medical research, news from the scientific community, advocacy and fundraising initiatives to help speed work on the repair and reversal of aging, links to online resources, and much more. This content is...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
In this study, a total of 74 Chinese Alligators (30 males and 44 females) were examined to establish reference range values of hematology and serum biochemistry parameters during the active and hibernating periods. We measured and analyzed 9 hematology and 21 serum biochemistry parameters including 4 serum electrolyte parameters, and described the morphology of different types of blood cells. No statistical differences between the sexes were found for hematology parameter, while significant differences were noted for some serum biochemistry parameters, with males having greater alkaline phosphatase activity level and lower...
Source: Tissue and Cell - Category: Cytology Authors: Tags: Tissue Cell Source Type: research
Conclusions: Lower prevalence of risk factors for VC in the BEN than non-BEN patients was found in pre-dialysis but not in HD group and this was reflected in the prevalence and severity of VC in the groups. Prevalence of VC and mean VC score were significantly lower in pre-dialysis BEN than in non-BEN patients but not for those on HD. PMID: 30344235 [PubMed - in process]
Source: Medicina (Kaunas) - Category: Universities & Medical Training Authors: Tags: Medicina (Kaunas) Source Type: research
More News: Allergy & Immunology | Cholesterol | Endemics | Environmental Health | Physiology | Study