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Micrograph showing gliosis in the cerebellum. Reactive astrocytes on the left display severe proliferation and domain overlap. Reactive astrogliosis is the most common form of gliosis and involves the proliferation of astrocytes, a type of glial cell responsible for maintaining extracellular ion and neurotransmitter concentrations, modulating synapse function, and forming the blood–brain ...
Microangiopathy (also known as microvascular disease, small vessel disease (SVD) or microvascular dysfunction) is a disease of the microvessels, small blood vessels in the microcirculation. [1] It can be contrasted to macroangiopathies such as atherosclerosis , where large and medium-sized arteries (e.g., aorta , carotid and coronary arteries ...
Altered brain structure in chemotherapy patients provides explanation for cognitive impairment. [12] Another study in 2007 investigated the differences in brain structure between two adult, monozygotic twin females. One underwent chemotherapy treatment for breast cancer, while the other did not have cancer and was not treated with chemotherapy.
Retinal microvascular disease is noninflammatory and resembles that of diabetic retinopathy. This leads to partial or complete vision loss. [6] Headaches due to multiple factors including brain lesions, edema, and papilledema. Mental confusion, loss of cognitive function, loss of memory, slowing of speech and hemiparesis due to brain lesions.
For people with brain tumors, radiation can be an effective treatment because chemotherapy is often less effective due to the blood–brain barrier. [ citation needed ] Unfortunately for some patients, as time passes, people who received radiation therapy may begin experiencing deficits in their learning, memory, and spatial information ...
The brain is susceptible to damage from conventional therapy. The brain has a limited capacity to repair itself. Many drugs cannot cross the blood–brain barrier to act on the tumor. Treatment of primary brain tumors consists of palliative (symptomatic) care and therapies intended to improve survival.
Leukoencephalopathy (leukodystrophy-like diseases) is a term that describes all of the brain white matter diseases, whether their molecular cause is known or unknown. [1] It can refer specifically to any of these diseases: Progressive multifocal leukoencephalopathy; Toxic leukoencephalopathy
The most definitive diagnostic modality is a biopsy of the affected blood vessel however brain biopsy has a low yield, with up to 30-50% of biopsies being normal in suspected cases. [5] This is due to some cases having an irregular distribution of vessel involvement (making biopsy technically difficult) or larger vessels being unable to be ...