Nandrolone decanoate does not enhance training effects but increases IGF-I mRNA in rat diaphragm.

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Gayan-Ramirez G, Rollier H, Vanderhoydonc F, Verhoeven G, Gosselink R, Decramer M

Nandrolone decanoate does not enhance training effects but increases IGF-I mRNA in rat diaphragm.

J Appl Physiol (1985). 2000 Jan;88(1):26-34. doi: 10.1152/jappl.2000.88.1.26.

PubMed ID

10642358 [ View in PubMed

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Abstract

To examine whether concomitant anabolic steroid treatment combined with training might enhance previously observed training effects (A. Bisschop, G. Gayan-Ramirez, H. Rollier, R. Gosselink, R. Dom, V. de Bock, and M. Decramer. Am. J. Respir. Crit. Care Med. 155: 1583-1589, 1997) and whether insulin-like growth factor I (IGF-I) was involved in these changes, male and female rats were submitted to inspiratory muscle training (IMT) for 8 wk (30 min/day, 5 times/wk) and were compared with untrained controls. During the last 5 wk of training, trained rats were divided to receive weekly either low-dose (LD; 1.5 mg/kg) or high-dose (HD; 7.5 mg/kg) nandrolone decanoate or saline for the IMT and control rats. In both sexes, diaphragm muscle mass and contractile properties were unchanged with treatment. In males, HD resulted in decreased diaphragm type I cross-sectional area (-15%; P < 0.05, HD vs. IMT), whereas no changes were observed in females. Finally, an increase in IGF-I mRNA levels was present in HD male (+73%; P < 0.05, HD vs. IMT) and female treated rats [LD (+58%) and HD (+96%) vs. IMT; P < 0.001]. We conclude that administration of nandrolone decanoate did not enhance the previously observed training effects in rat diaphragm, although it increased the IGF-I mRNA expression levels.

DrugBank Data that Cites this Article

Drug Targets

Drug	Target	Kind	Organism	Pharmacological Action	Actions
Nandrolone decanoate	Insulin-like growth factor 1 receptor	Protein	Humans	Unknown	Inducer	Details