Postnatal development of NOS-ir neurons in the rat claustrum

• Autorzy: Kowianski P , Morys J.M. , Wojcik S. , Dziewiatkowski J. , Morys J.
• Języki publikacji: EN

Abstrakty

EN

The morphological features of nitric oxide synthase (NOS)-containing neurons in the rat claustrum (Cl) were studied during the period of four months after birth. Forty-five animals divided into nine groups, according to survival period (P0, P4, P7, P10, P14, P21, P28, P60, P120) were used in the study. The immunocytochemical staining to neuronal NOS was performed and the material was studied both qualitatively and quantitatively using unbiased stereological methods. Our observations indicate that the process of maturation of NOS-immunoreactive (ir) neurons in Cl takes place during the early postnatal period. We report the increase of numerical density of immunoreactive neurons, changes in neuronal size, expressed by the decrease of the percentage of small neurons with simultaneous increase of the participation of medium-sized neurons and large neurons. In the whole studied period the prevalence of oval and fusiform neurons is observed. However, the increase of the proportion of multipolar neurons takes place. Round neurons are most characteristic in the youngest groups of animals and later become dominated by the developing subpopulations of irneurons of other shapes. In the anterior, central and posterior parts of Cl, a similar pattern of maturation of NOS-ir neurons is observed. No prevalence of characteristically shaped neurons is observed in any part of Cl. The adult-like pattern of morphological features in the NOS-ir neuronal population in Cl is reached in the third postnatal week. The maturation of NOS-ir neurons in the claustrum is a dynamic process which is not stabilised at the moment of birth. It may be assumed that characteristic changes of the NOS-ir population of neurons may be influential on the physiological processes observed in Cl. These may in particular have some importance for the processes of synaptogenesis and establishing as well as refining of numerous claustral connections with the other structures of the central nervous system.

Słowa kluczowe

EN

nitric oxide synthase; development; neurobiology; anatomy; postnatal development; claustrum; neuron; interneuron; rat

• Wydawca: -
• Czasopismo: Folia Morphologica
• Rocznik: 2003
• Tom: 62
• Numer: 1
• Opis fizyczny: p.11-17,fig.

Twórcy

autor

Kowianski P

• Medical University, Debinki 1, 80-211 Gdansk, Poland

autor

Morys J.M.

autor

Wojcik S.

autor

Dziewiatkowski J.

autor

Morys J.

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