Changes in c-Fos and NOS expression in the PVH of lactating rats in response to excitotoxicity and stress.
This study investigated how lactation modified the expression patterns of Fos and nitric oxide synthase in the hypothalamic paraventricular nucleus (PVH) induced by excitotoxicity and stress. Kainic acid or egg white treatment weakly activated Fos expression in the PVH of lactating in comparison to diestrus or ovariectomized (OVX) rats. Labels for NADPH-diaphorase and nNOS revealed a different distribution pattern in the PVH depending on the physiological condition and challenge. The present results confirm that lactation attenuates the PVH activational response to stress and excitotoxicity, and both stimuli induced nitric oxide expression in the PVH of diestrus, lactating, and OVX rats.
Monasterio
Nela
N
Departamento de Neurobiología Celular y Molecular, Instituto de Neurobiología, Universidad Nacional Autónoma de México, Querétaro, México.
Ramos
Eugenia
E
Morales
Teresa
T
D000818:Animals; D005260:Female; D007608:Kainic Acid / Q000494:pharmacology*; D007774:Lactation; D009252:NADPH Dehydrogenase / Q000235:genetics / Q000378:metabolism; D009498:Neurotoxins / Q000494:pharmacology*; D009569:Nitric Oxide / Q000378:metabolism; D052248:Nitric Oxide Synthase Type I / Q000235:genetics / Q000378:metabolism*; D010052:Ovariectomy; D010286:Paraventricular Hypothalamic Nucleus / Q000166:cytology / Q000187:drug effects* / Q000502:physiology*; D051381:Rats; D017208:Rats, Wistar; D013312:Stress, Physiological
D009498:Neurotoxins; D009569:Nitric Oxide; D052248:Nitric Oxide Synthase Type I; D009252:NADPH Dehydrogenase; D007608:Kainic Acid