Search results for " cortisol"

Neurosciences and attachment theory: A brief review

2017

The attachment theory was proposed and elaborated by John Bowlby. Over the last ten years the attachment theory has attracted considerable interest in the field of mental health as it emphasizes how relationships that are established in the earliest stages of development have an impact on man in an indefinable and lifelong manner.

Relación entre empatía y respuesta matutina de cortisol

2016

Con la finalidad de prevenir la conducta antisocial, el estudio de las bases biológicas de la empatía ha cobrado especial relevancia en los últimos años. Diversos estudios han resaltado la implicación del eje hipotálamo-hipófisis-adrenal (HHA) y el cortisol en la empatía, pero son escasos los que han estudiado la relación entre esta y la respuesta matutina de cortisol (CAR, por su nombre en inglés Cortisol Awakening Response) como indicador de la actividad basal del HHA. Este estudio analiza la asociación entre la empatía, tanto cognitiva como emocional, y la CAR en 39 hombres y 91 mujeres (47 fase folicular y 44 fase lútea del ciclo menstrual). La CAR se obtuvo a partir de muestras de sali…

Relationship between Empathy and Cortisol Awakening Response

2016

Con la finalidad de prevenir la conducta antisocial, el estudio de las bases biológicas de la empatía ha cobrado especial relevancia en los últimos años. Diversos estudios han resaltado la implicación del eje hipotálamo-hipófisis-adrenal (HHA) y el cortisol en la empatía, pero son escasos los que han estudiado la relación entre esta y la respuesta matutina de cortisol (CAR, por su nombre en inglés Cortisol Awakening Response) como indicador de la actividad basal del HHA. Este estudio analiza la asociación entre la empatía, tanto cognitiva como emocional, y la CAR en 39 hombres y 91 mujeres (47 fase folicular y 44 fase lútea del ciclo menstrual). La CAR se obtuvo a partir de muestras de sali…

“Stress e iperattività dell’asse ipotalamo-ipofisi-surrene nella patogenesi dei disturbi psicotici”

2014

Assessing Stress Resilience After Smolt Transportation by Waterborne Cortisol and Feeding Behavior in a Commercial Atlantic Salmon (Salmo salar) Grow…

2022

Sampling protocols and water quality sensors have been developed to assess fish health and welfare in recirculating aquaculture systems (RASs). Still, the use of fish-based non-invasive welfare indicators, reflecting the physiological state of the fish, is limited in this type of system. Cortisol, the major stress-coping hormone in fish, diffuses through the gills. Consequently, waterborne cortisol is a potential fish-based non-invasive welfare indicator in RAS. However, its use in commercial rearing systems is sparse. In this study, we evaluated water cortisol levels and feeding behavior as welfare indicators of newly inserted smolt in a commercial RAS for harvest size Atlantic salmon. The…

Stress occupazionale: correlazione tra livelli di cortisolo, strategie di coping, ansia e depressione in turnisti notturni

2010

Data from: Proactive avoidance behaviour and pace-of-life syndrome in Atlantic salmon

2019

Individuals in a fish population differ in key life history traits such as growth rate and body size. This raises the question of whether such traits cluster along a fast-slow growth continuum according to a pace-of-life syndrome (POLS). Fish species like salmonids may develop a bimodal size distribution, providing an opportunity to study the relationships between individual growth and behavioural responsiveness. Here we test whether proactive characteristics (bold behaviour coupled with low post-stress cortisol production) are related to fast growth and developmental rate in Atlantic salmon, Salmo salar. Boldness was tested in a highly controlled two-tank hypoxia test were oxygen levels we…

Plasma cortisol levels in amyotrophic lateral sclerosis

2013

Seabream (Sparus aurata) long-term dominant-subordinate interplay affects phagocytosis by peritoneal cavity cells.

2012

Fish are sensitive to stressful conditions that affect their innate immune systems and increase their susceptibility to diseases. We examined the social stress of paired gilthead seabream (Sparus aurata). Social hierarchies (dominant/subordinate) were characterised by behavioural changes, such as “aggressiveness” and “feeding order”; hierarchical positions were established within an hour of exposure to social stress and remained unchanged for approximately 1 year. To characterise physiological stress, we measured blood plasma levels of cortisol, glucose, and lactate as well as osmolarity and observed that the levels of these stress markers were higher in subordinate individuals than in domi…

Differential expression of two glucocorticoid receptors in seabass (teleost fish) head kidney after exogeneous cortisol inoculation

2009

Stressful conditions include a prompt release of corticosteroid hormones which can mediate gene expression through glucocorticoid receptors (GR). Since two seabass (Dicentrarchus labrax) GRs have been cloned and sequenced from peritoneal cavity cells (DlGR1) and liver (DlGR2), a comparative amino acid sequence analysis that included Haplochromis burtoni HbGRs, was carried out and homologies disclosed. The DlGR1 and DlGR2 deduced aminoacid sequences showed 61% identity (I) and 70% similarity (S). Moreover, DlGR2 was similar to HbGR2b (69% I, 73% S), and the DlGR1 to HbGR1 (72% I, 78% S). In addition, we examined the expression of the DlGRs after exogeneous cortisol inoculation into the perit…