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Articles 211 - 215 of 215

Full-Text Articles in Anatomy

Environment And Archaeology. Β - Visiting The Excavation Of The Neolithic Settlement At Poussi-Kalogeri (In Greek), Anastasia Tsaliki, Lilian Karali Dec 1994

Environment And Archaeology. Β - Visiting The Excavation Of The Neolithic Settlement At Poussi-Kalogeri (In Greek), Anastasia Tsaliki, Lilian Karali

Dr Anastasia Tsaliki, PhD

No abstract provided.

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Cortical Type 2 Astrocytes Are Not Dye Coupled Nor Do They Express The Major Gap Junction Genes Found In The Central Nervous System, Daniel Belliveau, C. Naus Dec 1993

Cortical Type 2 Astrocytes Are Not Dye Coupled Nor Do They Express The Major Gap Junction Genes Found In The Central Nervous System, Daniel Belliveau, C. Naus

Daniel J. Belliveau

The O‐2A progenitor cell first described from the rat optic nerve is a bipotential precursor of oligodendrocytes and type 2 astrocytes. Each cell expresses specific markers that distinguish them as unique cell types. O‐2A progenitors cultured in high serum preferentially differntiate into type 2 astrocytes and when exposed to defined medium or low serum develop along the oligodendrocyte lineage. We analyzed the gap junction gene expression of type 2 astrocytes to determine if they are coupled to form a syncytium, like their type 1 astrocyte counterparts. Dye coupling experiments demonstrated that cortical type 2 astrocytes are not coupled, while type …

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In Vivo Growth Of C6 Glioma Cells Transfected With Connexin43 Cdna, C. Naus, K. Elisevich, D. Zhu, Daniel Belliveau, R. Del Maestro Dec 1991

In Vivo Growth Of C6 Glioma Cells Transfected With Connexin43 Cdna, C. Naus, K. Elisevich, D. Zhu, Daniel Belliveau, R. Del Maestro

Daniel J. Belliveau

In order to examine the possible role of intercellular communication via gap junctions in the control of tumor growth, we have transfected C6 glioma cells with connexin43 cDNA. We obtained several clones with variable expression of connexin43. The growth rate of these clones in culture was inversely related to the degree of expression of the transfected cDNA. To examine the growth of these transfected cells in vivo, cells were grown in spinner culture flasks to form spheroids 250–300 µm in diameter. Spheroids of nontransfected C6 cells produced large gliomas. Immunohistochemical and in situ hybridization analyses revealed relatively high levels of …

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Regulation Of Connexin32 And Connexin43 Mrna And Protein During Neural Development, Daniel Belliveau, G. Kidder, C. Naus Dec 1990

Regulation Of Connexin32 And Connexin43 Mrna And Protein During Neural Development, Daniel Belliveau, G. Kidder, C. Naus

Daniel J. Belliveau

No abstract provided.

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Regional Differences In Connexin32 And Connexin43 Messenger Rnas In Rat Brain, C. Naus, Daniel Belliveau, J. Bechberger Dec 1989

Regional Differences In Connexin32 And Connexin43 Messenger Rnas In Rat Brain, C. Naus, Daniel Belliveau, J. Bechberger

Daniel J. Belliveau

The regional distribution of gap junction mRNAs was examined in the adult rat brain. The level of connexin43 mRNA is more abundant than connexin32, being homogeneously distributed throughout different regions of brain. In contrast, there is dramatic heterogeneity in the level of connexin32 mRNA, with the highest level in the hindbrain. These results suggest that the gap junction genes are differentially expressed in regions of the adult rat brain.

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