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Developmental patterns of caspase-3, bax and bcl-2 proteins expression in the human spinal ganglia (CROSBI ID 137200)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Vukojević, Katarina ; Carev, Dominko ; Sapunar, Damir ; Petrović, Danijel ; Saraga-Babić, Mirna Developmental patterns of caspase-3, bax and bcl-2 proteins expression in the human spinal ganglia // Journal of molecular histology, 39 (2008), 3; 339-349. doi: 10.1007/s10735-008-9171-4

Podaci o odgovornosti

Vukojević, Katarina ; Carev, Dominko ; Sapunar, Damir ; Petrović, Danijel ; Saraga-Babić, Mirna

engleski

Developmental patterns of caspase-3, bax and bcl-2 proteins expression in the human spinal ganglia

The distribution of the bcl-2, bax and caspase-3 proteins was investigated in the cells of developing human spinal ganglia. Paraffin sections of 10 human conceptuses between 5th and 9th gestational weeks were analysed morphologically, immunohistochemically and by TUNEL-method. Cells positive to caspase-3 had brown stained nuclei or nuclear fragmentations. At earliest stages, 6% of ganglion population were caspase-3 positive cells. Later on, a significant increase in number of caspase-3 positive cells appeared, particularly in the ventral part of ganglia (12%), and subsequently decreased to 6%. TUNEL-positive cells had the same distribution pattern as caspase-3 positive cells. Bax-positive cells followed the developmental pattern similar to caspase-3 cells, changing in range between 20% and 32%. There were 8% of bcl-2 positive cells at earliest stages. They increased significantly in dorsal part of the ganglion during the 7th week (28%), and than dropped to 15% by the end of the 8th week. These findings suggest a ventro-dorsal course of development in human spinal ganglia. Number of bcl-2, bax and caspase-3 positive cells changed in a temporally and spatially restricted manner, coincidently with ganglion differentiation. While apoptosis might control cell number, bcl-2 could act in suppression of apoptosis and enhancement of cell differentiation.

apoptosis; bcl-2; bax; caspase-3; spinal ganglia development; human embryos

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Podaci o izdanju

39 (3)

2008.

339-349

objavljeno

1567-2379

10.1007/s10735-008-9171-4

Povezanost rada

Temeljne medicinske znanosti

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