Sickle Cell Disease
Sickle Cell Disease - Related Videos
05:23
Continuous Manual Exchange Transfusion for Patients with Sickle Cell Disease: An Efficient Method to Avoid Iron Overload
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Cited by 4 •
2017
We have outlined a method of continuous manual exchange transfusion for the treatment of sickle cell disease in patients. This safe protocol was designed to effectively limit iron overload in patients in need of chronic transfusions and can be used extensively without any special equipment.
07:42
Magnetic Levitation Coupled with Portable Imaging and Analysis for Disease Diagnostics
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Cited by 11 •
2017
We present a magnetic levitation technique coupled with automated imaging and analysis in both a smartphone-compatible device and a device with embedded imaging and processing. This is applied to measure the density distribution of cells with two demonstrated biomedical applications: sickle cell disease diagnosis and separating white and red blood cells.
08:23
Characterization of Sickling During Controlled Automated Deoxygenation with Oxygen Gradient Ektacytometry
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Cited by 16 •
2019
Here, we present oxygen gradient ektacytometry, a rapid and reproducible method to measure red blood cell deformability in samples from patients with sickle cell disease under controlled deoxygenation and reoxygenation. This technique provides a way to study red blood cell sickling and to monitor sickle cell disease treatment efficacy.
11:08
Endothelialized Microfluidics for Studying Microvascular Interactions in Hematologic Diseases
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Cited by 52 •
2012
A method to culture an endothelial cell monolayer throughout the entire inner 3D surface of a microfluidic device with microvascular-sized channels (<30 μm) is described. This in vitro microvasculature model enables the study of biophysical interactions between blood cells, endothelial cells, and soluble factors in hematologic diseases.
09:44
Chemogenetic Regulation in Reprogrammed Stem Cell-derived Precursor Cells in Treating Neurodegenerative Diseases
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2025
Here, we describe a protocol for engineering chemically reprogrammed stem cells to achieve precise neuronal modulation by differentiating these cells into dopaminergic precursor cells, transplanting them into mouse models of Parkinson's disease, and evaluating behavioral and electrophysiological outcomes to confirm the successful integration and functional effectiveness of the transplanted cells.
FAQs
Low oxygen levels create conditions in which hemoglobin S molecules polymerize, forming structures that alter the red blood cell’s shape and flexibility. This molecular change links oxygen availability to cell deformation and helps explain why affected cells can become rigid. Studying this relationship connects protein behavior with changes in cell mechanics and oxygen delivery.
Rigid, sickle-shaped cells can obstruct small blood vessels, limiting the movement of blood through tissues. This blockage disrupts oxygen delivery and can contribute to severe pain and organ injury. The mechanism illustrates how a change in hemoglobin can produce effects at several biological levels, from cell shape to circulation and whole-organ physiology.
Hemolysis, the breakdown of red blood cells, contributes to anemia by reducing the number of cells available to transport oxygen. Inflammation adds another layer of tissue stress, while vessel blockage can further impair circulation. Considering these processes together helps explain why the disease produces complications beyond the initial molecular abnormality in hemoglobin.
Screening helps identify individuals who have the inherited disorder, connecting clinical evaluation with the underlying beta-globin gene change. It can support recognition of the condition before complications become the main reason for evaluation. Within biology, screening demonstrates how molecular genetic information can be used to identify a disease affecting cells, tissues, and physiology.
Targeted medicines are designed as part of efforts to address specific biological mechanisms contributing to sickle cell disease. Their development reflects the understanding that hemoglobin polymerization, abnormal cell behavior, hemolysis, inflammation, and vessel blockage are connected but distinguishable processes. This mechanistic approach can guide treatments intended to reduce disease effects rather than focus only on symptoms.
Transfusion care and emerging gene-based therapies represent different strategies for addressing the consequences or causes of sickle cell disease. Transfusion approaches relate to managing the blood’s oxygen-carrying capacity, whereas gene-based approaches are connected to the inherited beta-globin abnormality. Together, they show how research spans immediate physiological support and longer-term molecular intervention.