Macrophage plasticity may differ according to the nature of the stimuli leading to pathology.
Cross-reactive immunity can have either advantageous or negative (e.g., leading to pathology) consequences.
This damage consequently accumulates with age, initiating a series of events that over the time compromise function, leading to pathology and ultimately death [ 1, 6].
Conflicting theories have been proposed to explain the mechanisms leading to pathology, and more research is needed to understand the disease process [ 10, 13, 14].
For instance, in a mouse model of HIV-1 infection, sustained TLR7 stimulation causes activation and disruption of the lymphoid system, leading to pathology and poor outcome [ 34].
Heightened antiviral immunity in women is beneficial for virus clearance, but may be detrimental if it becomes excessively high or prolonged, leading to pathology and even death.
Our data indicates that distant neurotransmission modifications actively take part in the early steps of the abnormal mechanisms leading to pathology progression independently of local Aβ production.
However, while several chemicals can perturb chromatin structure acutely, for many agents (particularly alcohol) it remains unclear if these modifications represent transient responses to exposure or heritable lesions leading to pathology.
The coordination of symbiont replication with host cell division is required to prevent either loss of the symbiont within the host or over replication leading to pathology within the host [ 1], such as that occurring with wMelPop.
In SC disease, macrophages efficiently kill parasites and control parasite growth without tissue damage, while macrophages from CL and ML patients allow parasite survival and secrete inflammatory molecules that activate and recruit other cells, leading to pathology.
