Emil Sebastian Pais

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The authors analyzed by transmission electron microscopy the modifications of plasmalemma and nuclear envelope in the cerebral arterial wall in humans. Their ultrastructural observations are performed on the tunica media and endothelium. During autoschizis, some smooth muscle cells showed deep invaginations of the nuclear envelope with multiple craters that(More)
The authors analyzed by transmission electron microscopy (TEM) neurosurgical samples obtained from patients with cerebral tumors, neurotrauma, cerebral ischemia, Moyamoya disease, encephalitis, etc. Their observations concern a variety of dying cell types by different programmed death pathways, including apoptosis, paraptosis, autophagy, autoschizis,(More)
The purpose of this study was to describe the tissues surrounding two early failed dental implants morphologically and ultrastructurally. In the first case, the implant's surface was analyzed by scanning electron microscopy (SEM) using an environmental scanning electron microscope and the surrounding tissues were analyzed by light microscopy (LM) and(More)
We have evidence that methamphetamine (METH)-induced neuronal death is morphologically necrotic, not apoptotic, as is currently believed, and that electrographic seizures may be responsible. We administered 40mg/kg i.p. to 12 male C57BL/6 mice and monitored EEGs continuously and rectal temperatures every 15min, keeping rectal temperatures <41.0°C. Seven of(More)
This study is based on data analysis by light and transmission electron microscopy of the surgical cases in cerebral tumors, cerebrovascular malformations, thromboses in the carotid system, and other injuries such as perivascular hemorrhage. We examined cortical arteries and veins, perivascular areas with old hematic masses, vasculogenic foci, and broken(More)
Light microscopy and transmission electron microscopy were used to investigate surgical cases in a variety of pathological conditions (thromboses, tumors, cerebrovascular malformations, Moyamoya disease) to identify and characterize different phenotypes belonging to a new interstitial cell recently described ultrastructurally in the brain and here named(More)
We describe in this work the presence of extracellular vesicles (EVs) along different cell types, especially cordocytes, in various clinical conditions of the human brain (atherothrombotic disease, cerebral tumors, hygroma durae matris, intracerebral cysts, Moyamoya disease and parenchymatous hematoma) using transmission electron microscopy (TEM). EVs,(More)
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