Dopamine receptor antagonists increase markedly the quantity of retrograde transport of HRP in the rat masseteric motoneuron

Thyroid Hormones and Motoneurons Development

“…A small incision was made in the chick skin to expose the surface of the superficial masseter muscle. Then 1-5µlit of 40% HRP (type VI-Sigma) dissolved in sterile saline was injected slowly into the 2-5 loci above as well as under the parotid duct in the left masseter using a Hamilton syringe as demonstrated by Kawagishi et al (Kawagishi et al, 1992). After each injection the needle was left in situ for 1 min to avoid backflow of the injected HRP, following which the needle was removed, the injection sites were cleaned with sterile saline, and the opening was sutured.…”

“…Thus in this chapter the morphological features of the developing masseter motoneurons labeled by injection of HRP into the superficial masseter muscle were analyzed in normal and congenital hypothyroid rat's offspring. HRP retrograde reaction p r o d u c t i s o b s e r v e d a s d a r k b l u e i n t r a c e llular granules varying in quantity from motoneuron to motoneuron even in the same trigeminal motor nucleus (Kawagishi et al, 1992). As hypothyroidism reduces neuronal process growth, synaptogenesis, axonal transport velocity (Biesiada et al, 1996;Stein et al, 1991) and neurotransmitter synthesis (Barakat-Walter et al, 2000;Behzadi & Ganji, 2005), it was of especial interest to investigate the alteration in the morphological characteristics of masseter motoneurons as well as HRP uptake and transport from the neuromuscular junction.…”

Effect of haloperidol on the numeric density of neurons and nuclear height in the rat hippocampus: A stereological and histopathological study

“…Although a lot of useful information has been obtained from structural (17), ultrastructural (18), quantitative (19,20) and clinical (11) studies, there are few stereological studies evaluating the effects of haloperidol treatment (20)(21)(22)(23).…”