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Hair loss is a well-known side effect of many chemotherapy drugs used to treat certain forms of cancer. Similar to other toxins that cause hair loss, hair loss from cancer medications usually isn ...
Amyloid-related imaging abnormalities (ARIA) are abnormal differences seen in magnetic resonance imaging of the brain in patients with Alzheimer's disease. ARIA is associated with anti-amyloid drugs, particularly human monoclonal antibodies such as aducanumab. [1] There are two types of ARIA: ARIA-E and ARIA-H.
The most useful stain in the diagnosis of amyloid is Congo red, which, combined with polarized light, makes the amyloid proteins appear apple-green on microscopy. Also, thioflavin T stain may be used. [22] A number of imaging techniques such as a Nuclear Medicine PYP scan, DPD scan or SAP scan are also in use. [23]
A DPD scan is a type of nuclear medicine imaging test which uses radioactive technetium-99m (99m Tc) and 3,3-diphosphono-1,2-propanodicarboxylic acid (DPD) to diagnose cardiac amyloidosis. The radiopharmaceutical is taken up only in patients with ATTR amyloidosis , making it a useful tool to differentiate from AL amyloidosis .
Amyloid is formed through the polymerization of hundreds to thousands of monomeric peptides or proteins into long fibers. Amyloid formation involves a lag phase (also called nucleation phase), an exponential phase (also called growth phase) and a plateau phase (also called saturation phase), as shown in the figure.
Side effects from DHT blockers used in hair loss prevention shampoos are also uncommon. Some ingredients may cause irritation, dry skin, itchy skin or other similarly minor effects.
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