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1.
Braz. j. med. biol. res ; 25(11): 1117-26, 1992. ilus, tab
Article Dans Anglais | LILACS | ID: lil-134608

Résumé

1. The role of testosterone (T) in growth was evaluated in 11 prepubertal hypopituitary males during two 15-day periods separated by a 4-week interval, i.e., before (PRE-T period) and during T ester treatment (50 mg every 5 days, 3 im doses-T period). 2. T increased growth hormone (GH) secretion, assessed by 4-h rhythm (mean +/- SEM = 1.90 +/- 0.27 vs 1.77 +/- 0.21 ng/ml; P < 0.05) and after a GHRH stimulus (3.42 +/- 0.54 vs 3.08 +/- 0.43 ng/ml; P < 0.05) as compared to the PRE-T period. 3. T also increased basal somatomedin-C (SM-C) levels (0.20 +/- 0.03 vs 0.15 +/- 0.02 U/ml; P < 0.001) and SM-C generation. After GH was administered in 4 im doses (0.01, 0.02, 0.05 and 0.1 U/kg), SM-C levels were 0.31 +/- 0.08 vs 0.24 +/- 0.07 U/ml, P < 0.001. T did not change incremental (absolute minus basal) SM-C levels (0.15 +/- 0.08 vs 0.12 +/- 0.07 U/ml; P > 0.05). 4. The results suggest that T increased plasma SM-C levels by stimulating residual GH secretion in hypopituitary males


Sujets)
Humains , Mâle , Facteur de croissance IGF-I/effets des médicaments et des substances chimiques , Puberté/effets des médicaments et des substances chimiques , Hormone de croissance/déficit , Hormone de croissance/effets des médicaments et des substances chimiques , Hormone de croissance , Testostérone/usage thérapeutique , Adolescent , Adulte , Analyse de variance , Enfant , Hypopituitarisme/sang , Hypopituitarisme/traitement médicamenteux , Hypopituitarisme/épidémiologie , Facteur de croissance IGF-I/analyse , Puberté/sang , Hormone de croissance/sang , Facteurs temps
2.
Rev. Inst. Med. Trop. Säo Paulo ; 33(4): 251-5, jul.-ago. 1991. tab
Article Dans Portugais | LILACS | ID: lil-108390

Résumé

Sao analisados tres pacientes que apresentaram comprometimento da funcao respiratoria apos acidente por Crotalus durissus. As manifestacoes respiratorias surgiram nas primeiras 48 horas apos a picada do ofidio e consistiram de dispneia, taquipneia, uso da musculatura acessoria da respiracao (casos 1 e 2) e batimento das aletas nasais (caso 2). Dois pacientes (casos 1 e 2) apresentaram insuficiencia respiratoria aguda. O diagnostico desta complicacao no caso 1 foi clinico pois o paciente apresentou apneia. O paciente do caso 2, 24 horas apos o acidente ofidico apresentou dificuldade respiratoria intensa e periodos de apneia sendo intubado, permanecendo em respiracao espontanea. Houve agravamento dos sinais clinicos de insuficiencia respiratoria e a determinacao de pH e gases do sangue arterial mostrou em relacao ao exame inicial elevacao da pressao parcial de gas carbonico (40 mmHg para 50,3 mmHg) caracterizando insuficiencia ventilatoria aguda. Ambos foram tratados com emprego de ventilacao artificial mecanica, tendo o paciente do caso 1 permanecido no ventilador durante 33 dias e o do caso 2 durante 15 dias. Ambos desenvolveram insuficiencia renal aguda, necessitaram de dialise peritoneal e recuperaram a funcao renal. A paciente do caso 3, apesar dos sintomas e sinais de comprometimento respiratorio...


Sujets)
Adolescent , Adulte , Animaux , Humains , Mâle , Femelle , Venins de crotalidé/effets indésirables , Insuffisance respiratoire/étiologie , Maladie aigüe , Atteinte rénale aigüe/étiologie , Crotoxine/effets indésirables , Facteurs temps
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