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The Cordocytes of the Human Brain. An Atlas of Light and Electron Microscopy

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This work is based on data analysis by light, scanning, and transmission electron microscopy of surgical cases in tumors and metastases of carcinoma, thromboses, cerebrovascular malformations, aneurysms, primary hematomas, abscesses, tuberculoma cysts, Moyamoya disease, and other injurious situations such as perivascular hemorrhage, infarct, and neurotrauma in patients aged 6-89 years, with over 1,200 cerebral biopsies collected for microscopic observations. Ultrastructurally, there were identified, characterized, and compared both undifferentiated cells and well-differentiated cordocytes in different localizations, from outer cerebral cortex to choroid plexus, and in areas with old hematic masses, vasculogenic focuses, heterotopic neural tissue, encapsulation, broken arteries, and abnormal proliferations such as microtumors. We demonstrated phenotypic changes of cells, and especially, our findings shed light on the roles of these cells, which may facilitate the benefic processes and delay the pathological processes, being involved in fundamental processes of the central nervous system development. Cordocytes (which form the pia mater with blood vessels) are involved in normal corticogenesis (being demonstrated in the cerebral ectocortex), postnatally in the maintenance of appropriate pericortical microenvironment, in vasculogenesis, vasomotion, vascular repair/remodeling, inhibition of hematic invasion to brain parenchyma as physical barriers, especially in hypertensive humans, inhibition of microtumor growth and any aberrant cellular movement toward cerebral cortex, etc. The continuum of cell events could open the way for an unifying theory on special interstitial cells from the human body (interstitial cells of Cajal-like cells). This type of cell is a good candidate for stem cell therapy, cooperating with stem cells in many situations. In the last instance, the brain performance improves if its microenvironment is maintained under appropriate conditions, for which cordocytes are responsible.

128 pages, Paperback

Published February 1, 2014

About the author

Leon Dănăilă

14 books22 followers
Leon Dănăilă este medic specialist neurochirurg la Spitalul ,,Gh. Marinescu" din București. El a fost ales membru corespondent al Academiei Române (la 24 octombrie 1997) și apoi membru titular al acesteia (din 20 decembrie 2004).
După absolvirea Facultății de Medicină din Iași (1958) a lucrat timp de 2 ani ca medic stagiar la Spitalul din Comănești (1958-1960) și apoi un an la Circumscripția sanitară din Dărmănești (1960-1961). În anul 1961, prin concurs, a ocupat postul de medic secundar neurochirurg la clinica de Neurochirurgie de la Spitalul „Gh. Marinescu” din București unde lucrează și în prezent. Prin examene și concursuri severe
A devenit în anul 1966 medic specialist neurochirurg, în anul 1972 doctor în medicină cu lucrarea „Neurinomul Spinal”, în 1974 medic primar neurochirurg gradul III, în anul 1981 medic primar neurochirurg gradul II și șef al secției VII de neurochirurgie vasculară și microneurochirurgie. În anul 1972, a absolvit la cursuri de zi și Facultatea de Filozofie-Psihologie din București.
Absolvent al Facultății de Medicină din Iași (1958) și al Facultății de Filozofie-Psihologie din București a ocupat prin concurs în anul 1991 postul de profesor neurochirurg la clinica II Neurochirurgie al Universității de Medicină și Farmacie “Carol Davila” din București, iar în anul 1992 cel de profesor de psihoneurologie la Facultatea de Psihologie a Universității “Titu Maiorescu” din București.

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