Abnormal structures located in various parts of the brain and composed of dense arrays of paired helical filaments (neurofilaments and microtubules). These double helical stacks of transverse subunits are twisted into left-handed ribbon-like filaments that likely incorporate the following proteins: (1) the intermediate filaments: medium- and high-molecular-weight neurofilaments; (2) the microtubule-associated proteins map-2 and tau; (3) actin; and (4) UBIQUITINS. As one of the hallmarks of ALZHEIMER DISEASE, the neurofibrillary tangles eventually occupy the whole of the cytoplasm in certain classes of cell in the neocortex, hippocampus, brain stem, and diencephalon. The number of these tangles, as seen in post mortem histology, correlates with the degree of dementia during life. Some studies suggest that tangle antigens leak into the systemic circulation both in the course of normal aging and in cases of Alzheimer disease.

Descriptor ID	D016874
MeSH Number(s)	A08.663.609.520 A11.284.430.214.190.750.640.520 A11.671.573.520
Concept/Terms	Neurofibrillary Tangles Neurofibrillary Tangles Neurofibrillary Tangle Tangle, Neurofibrillary Tangles, Neurofibrillary

Below are MeSH descriptors whose meaning is more general than "Neurofibrillary Tangles".

Below are MeSH descriptors whose meaning is related to "Neurofibrillary Tangles".

Below are MeSH descriptors whose meaning is more specific than "Neurofibrillary Tangles".