Ivetta S Zimina

Learn More
Qualitative electron microscopy was performed to verify whether brain pathology in schizophrenia and bipolar disorder is associated with alterations of oligodendroglial cells and myelinated fibers. Ultrastructural signs of apoptosis and necrosis of oligodendroglial cells were found in the prefrontal area 10 and the caudate nucleus in both schizophrenia and(More)
Neuroimaging and microarray studies provide evidence for myelin and oligodendrocyte abnormalities in schizophrenia (SZ). Electron microscopy demonstrated dystrophy, necrosis and apoptosis of oligodendrocytes, the most severely affected cells in SZ. The proportion of myelinated fibres with atrophy of axon and swelling of periaxonal oligodendrocyte processes(More)
OBJECTIVES Neuroimaging studies showed lowered blood flow, glucose metabolic rates and hypoactivation of the prefrontal cortex (PFC) in patients with schizophrenia. The aim of the study was to clear up whether there are abnormalities in the microvasculature in the neocortex in schizophrenia. METHODS Capillaries were studied in PFC (BA 10) and visual(More)
A qualitative and quantitative electron microscopic study of oligodendroglial cells was performed in autoptic (4-6.5 hours after death) prefrontal area 10 in 16 cases of schizophrenia, 6 cases of bipolar affective disorder and 16 normal controls, as well as in the caudate nucleus in same schizophrenic and control cases. The signs of reactive, regressive,(More)
Neuroimaging studies have shown that the core symptoms of schizophrenia are associated with local changes of cerebral blood flow, particularly in the frontal cortex. Previously we reported ultrastructural damage of capillaries in the upper layers of the prefrontal cortex, Brodmann’s area (BA) 10 and in the visual cortex, BA 17 in schizophrenia. An electron(More)
Electron microscopic morphometric study of postmortem prefrontal cortex (area 10) and visual cortex (area 17) was performed to estimate the numeric density (Nv) of synapses in layers I and II, neurons in layer II and the number of synapses per neuron in layer II in 20 cases of chronic schizophrenia and 16 healthy controls using stereological physical(More)
An electron microscopic morphometric study of myelinated fibers and proportions of pathological myelinated fibers in postmortem prefrontal cortex, caudate nucleus and hippocampus was performed in 25 cases with schizophrenia and 25 normal controls. Pathology of myelinated fibers was similar in all brain structures in schizophrenia and included focal(More)
With the use of the electron microscope the authors studied the embryonic brain tissue obtained during medical abortion of 6 female schizophrenic patients. Ultrastructural peculiarities of the cell elements in the embryonic brain in theses cases were estimated in comparison with those found in the embryonic brain of 14 mentally healthy women. There is a(More)
The bundles growing away from the explants were mainly formed by neuroblast processes. It has been shown that the degree of differentiation of neuroblasts depends on "the age" of embryonal brain. The bundles of neuroblasts are accompained by slightly differentiated cells, having their own processes descending to the surface of the lining. These processes(More)
Transplantation of organs and tissues, including of endocrine glands, has nowadays become a constantnecessity, for existing hormonal treatment cannot completely replace the function of glands of internal secretion. A method of transplantation of the pituitary gland on its arteriovenous connections, together with nuclei of the anterior hypothalamus, in the(More)