Contention Stress
Mostrando 1-9 de 9 artigos, teses e dissertações.
-
1. Atividade gastroprotetora de Xylopia langsdorffiana A. St.-Hill &Tul. (Annonaceae) em modelos animais / Gastroprotective activity of Xylopia langsdorffiana A. St.-Hil. &Tul. (Annonaceae) in animal models.
Xylopia langsdorffiana A. St.-Hil. &Tul., species belonging to the Annonaceae family, popularly known as "pimenteira da terra" was selected for the study on the basis of the chemotaxonomic criteria, because many chemical compounds with pharmacological activities have been isolated. Among these, the diterpenes are highlighted, considered as important biomarke
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 24/02/2011
-
2. InfluÃncia da desnutriÃÃo neonatal em parÃmetros imunes de ratos treinados e submetidos ao estresse de contenÃÃo
Objective: The neonatal malnutrition (NM) influence was analyzed in immune parameters of 36 Wistar young adults (60 days) male rats, trained or not and submitted to the contention stress (CS). Methods: In the nurtured groups (casein 17%) and malnourished (8%) they were appraised total leukocytes (hemocytometer) and differentiate (blood smears); hemoglobin (c
Publicado em: 2009
-
3. Plasma `cortisol' levels in right and left ventricular failure
Plasma `cortisol' values are reported in 36 patients during or following right ventricular failure, and 12 during or following left ventricular failure. In patients with right ventricular failure the normal circadian rhythm was abolished with elevation of midnight values. Disturbance of rhythm was less marked in left ventricular failure, although midnight va
-
4. JAK redux: a second look at the regulation and role of JAKs in the heart
A number of type 1 receptor cytokine family members protect the heart from acute and chronic oxidative stress. This protection involves activation of two intracellular signaling cascades: the reperfusion injury salvage kinase (RISK) pathway, which entails activation of phosphatidylinositol 3-kinase (PI3-kinase) and ERK1/2, and JAK-STAT signaling, which invol
American Physiological Society.
-
5. Drought-Induced Changes in the Redox State of α-Tocopherol, Ascorbate, and the Diterpene Carnosic Acid in Chloroplasts of Labiatae Species Differing in Carnosic Acid Contents1
To assess antioxidative protection by carnosic acid (CA) in combination with that of other low-molecular weight (Mr) antioxidants (α-tocopherol [α-T] and ascorbate [Asc]) in chloroplasts, we measured endogenous concentrations of these antioxidants, their redox states, and other indicators of oxidative stress in chloroplasts of three Labiatae species, diffe
American Society of Plant Biologists.
-
6. Ockham's razor gone blunt: coenzyme Q adaptation and redox balance in tropical reef fishes
The ubiquitous coenzyme Q (CoQ) is a powerful antioxidant defence against cellular oxidative damage. In fishes, differences in the isoprenoid length of CoQ and its associated antioxidant efficacy have been proposed as an adaptation to different thermal environments. Here, we examine this broad contention by a comparison of the CoQ composition and its redox s
The Royal Society.
-
7. Reactive oxygen species as universal constraints in life-history evolution
Evolutionary theory is firmly grounded on the existence of trade-offs between life-history traits, and recent interest has centred on the physiological mechanisms underlying such trade-offs. Several branches of evolutionary biology, particularly those focusing on ageing, immunological and sexual selection theory, have implicated reactive oxygen species (ROS)
The Royal Society.
-
8. Developmental Variability of Photooxidative Stress Tolerance in Paraquat-Resistant Conyza.
Paraquat-resistant hairy fleabane (Conyza bonariensis L. Cronq.) has been extensively studied, with some contention. A single, dominant gene pleiotropically controls levels of oxidant-detoxifying enzymes and tolerance to many photooxidants, to photoinhibition, and possibly to other stresses. The weed forms a rosette on humid short days and flowers in dry lon
-
9. Suitability and durability of multiple internal thoracic artery coronary artery bypasses.
OBJECTIVE: The authors evaluate operative and extended outcomes of coronary artery bypass surgery using the bilateral internal thoracic arteries (ITAs) as bypass grafts. The authors conclude that the procedure is viable and of long-term benefit to most patients. SUMMARY BACKGROUND DATA: Multiple ITA grafting was met with early enthusiasm by the surgical prof