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| MURTHY,K. R. KRISHNA. |
| Death caused by scorpion envenoming (Buthidae family) is a common event in tropical and subtropical countries. Severe scorpion envenoming causes an autonomic storm resulting in a massive release of catecholamines, angiotensin II, glucagon, cortisol, and changes in insulin secretion. As a consequence of these changes in the hormonal milieu, scorpion envenoming results in a syndrome of fuel energy deficits and an inability of the vital organs to utilize the existing metabolic substrates, which causes myocardial damage, cardiovascular disturbances, peripheral circulatory failure, pulmonary oedema, and many other clinical manifestations alone or in combination, producing multi-system-organ-failure (MSOF) and death. Insulin-glucose infusion or antivenom... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Catecholamines; Angiotensin II; Glucagon; Cortisol; Insulin; Myocardial damage; Cardiovascular disturbances; Peripheral circulatory failure; Pulmonary oedema; Multi-system-organ-failure (MSOF). |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-79302000000100002 |
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| Pilipović,I.; Kosec,D.; Radojević,K.; Perišić,M.; Pešić,V.; Stojić-Vukanić,Z.; Leposavi,G.. |
| There is evidence that the major mediators of stress, i.e., catecholamines and glucocorticoids, play an important role in modulating thymopoiesis and consequently immune responses. Furthermore, there are data suggesting that glucocorticoids influence catecholamine action. Therefore, to assess the putative relevance of glucocorticoid-catecholamine interplay in the modulation of thymopoiesis we analyzed thymocyte differentiation/maturation in non-adrenalectomized and andrenalectomized rats subjected to treatment with propranolol (0.4 mg·100 g body weight-1·day-1) for 4 days. The effects of β-adrenoceptor blockade on thymopoiesis in non-adrenalectomized rats differed not only quantitatively but also qualitatively from those in adrenalectomized rats. In... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Catecholamines; Glucocorticoids; Β-adrenoceptors; Propranolol; Thymocyte apoptosis; Thymocyte proliferation; Thymocyte differentiation. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010000300009 |
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| Steinberg,L.L.; Lauro,F.A.A.; Sposito,M.M.M.; Tufik,S.; Mello,M.T.; Naffah-Mazzacoratti,M.G.; Cavalheiro,E.A.; Silva,A.C.. |
| The purpose of this study was to investigate the effect of the level of injury on the serum level of norepinephrine (Nor) and epinephrine (Epi) at rest and after maximal exercise in individuals with paraplegia. Twenty-six male spinal cord-injured subjects with complete paraplegia for at least 9 months were divided into two groups of 13 subjects each according to the level of injury, i.e., T1-T6 and T7-T12. Serum Nor and Epi concentrations were measured by HPLC-ECD, at rest (PRE) and immediately after a maximal ergospirometric test (POST). Statistical analysis was performed using parametric and non-parametric tests. Maximal heart rate, peak oxygen uptake, and PRE and POST Nor were lower in the T1-T6 than in the T7-T12 group (166 ± 28 vs 188 ± 10 bpm; 18.0 ±... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Catecholamines; Paraplegia; Exercise; Norepinephrine; Epinephrine; Spinal cord injury. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2000000800007 |
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| Monteiro,Eduardo Raposo; Souza,Juliano Ferreira Fernandes de; Baiotto,Gustavo Cancian; Figueiró,Giuliano Moraes; Rangel,Julia da Penha Piccoli; Coelho,Clarisse Simões. |
| The influence of acepromazine (ACP) on the effectiveness of dobutamine (DBT) in increasing blood pressure during isoflurane (ISO) anesthesia was evaluated in six horses. On separate occasions, the horses were randomly assigned to receive NaCl 0.9% (Control), ACP 0.025mg kg-1 and ACP 0.05mg kg-1. The experimental treatment was administered prior to induction of anesthesia. Maintenance of anesthesia was performed under conditions of normocapnia with ISO in oxygen. Dobutamine was administered at progressively increasing infusion rates until mean arterial pressure (MAP) reached 70mmHg or until a maximum infusion rate of 5.0µg kg-1 min-1. Compared with baseline, DBT increased heart rate, systolic, diastolic and mean blood pressures in all treatments. However,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenothiazines; Catecholamines; Equine; Inhalational anesthesia. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000300017 |
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