RT Journal Article
SR Electronic
T1 Electron microscope study on a transmissible cytotoxic factor isolated from cerebrospinal fluid of neurological patients: analysis of its structure and of its effects on various types of cell cultures
JF Journal of Clinical Pathology
JO J Clin Pathol
FD BMJ Publishing Group Ltd and Association of Clinical Pathologists
SP 20
OP 28
DO 10.1136/jclinpath-2011-200034
VO 65
IS 1
A1 Guerra, D
A1 Ronchetti, I
A1 Beretti, F
A1 Bartoletti, A M
A1 Pietrosemoli, P
A1 Gelormini, M S
A1 Malagolini, N
A1 Muscatello, U
A1 Portolani, M
YR 2012
UL http://jcp.bmj.com/content/65/1/20.abstract
AB Aims In previous studies, the present group showed that a factor, present in the cerebrospinal fluid of seven neuro-patients, was capable of inducing cell damages on cell cultures of epithelial cells (Vero), glial cells (DG54-MG) and human primary lymphocytes. The cytotoxicity, once induced, could be transmitted to fresh cell cultures using crude preparations obtained from the cytotoxic cell cultures.Methods and Results The present electron microscope study describes in detail the pathological changes occurring in the previously assayed cultured cell types, and for the first time in human fibroblasts, as a consequence of the treatment with crude cytotoxic preparation. It also demonstrates with reasonable certainty the absence of virus-like particles in both the treated cells and the partially purified cytotoxic fraction. Indeed high-resolution electron microscopy analysis shows that this fraction consists almost entirely of protein spheroids with a diameter of 8–12 nm.Conclusions The possible significance of nanotubular aggregates, observed in particular in the glial and in the epithelial cells undergoing cytotoxic damage, is also discussed.