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(Reuters) -U.S. drugmaker Pfizer said on Wednesday it is withdrawing its sickle cell disease treatment Oxbryta from all markets where it is approved, citing risks of a painful complication and deaths.
Sickle cell trait causes a change in the haemoglobin molecule in the blood. Normally, red blood cells have a very flexible, biconcave shape that allows them to move through narrow capillaries ; however, when the modified haemoglobin S molecules are exposed to low amounts of oxygen, or crowd together due to dehydration, they can stick together ...
Stroke (also known as a cerebrovascular accident (CVA) or brain attack) is a medical condition in which poor blood flow to the brain causes cell death. [5] There are two main types of stroke: ischemic, due to lack of blood flow, and. hemorrhagic, due to bleeding.
Sickle-cell versions of hemoglobin stick to themselves, stacking to form fibers that distort the shape of red blood cells carrying the protein. These sickle-shaped cells no longer flow smoothly through blood vessels, having a tendency to clog or degrade, causing the medical problems associated with this disease. [citation needed]
Amy McGorry. September 22, 2024 at 4:30 AM. Virus linked to rare paralyzing illness in children could spike in US, wastewater data suggests. Wastewater samples have shown elevated levels of a ...
604,127 new cases (2020) [11] Deaths. 341,831 (2020) [11] Cervical cancer is a cancer arising from the cervix or in the any layer of the wall of the cervix. [2] It is due to the abnormal growth of cells that have the ability to invade or spread to other parts of the body. [12] Early on, typically no symptoms are seen. [2]
September 21, 2024 at 5:30 AM. The side effects of newly discovered COVID-19 strain XEC might not be as severe, but is part of the more contagious variant class, experts say. The Centers for ...
Eukaryotes are organisms that range from microscopic single cells, such as picozoans under 3 micrometres across, [6] to animals like the blue whale, weighing up to 190 tonnes and measuring up to 33.6 metres (110 ft) long, [7] or plants like the coast redwood, up to 120 metres (390 ft) tall. [8]