Search for antisickling agents from plants

Area of Science:

• Hematology
• Molecular Biology
• Pharmacology

Background:

• Sickle cell disease (SCD) is a life-threatening inherited blood disorder.
• It is characterized by the polymerization of sickle hemoglobin (HbS) in red blood cells (RBCs) under deoxygenating conditions, causing RBCs to sickle.
• Current treatments manage symptoms but lack a permanent cure, leaving patients with chronic pain and complications.

Purpose of the Study:

• To investigate potential anti-sickling agents from natural sources and synthetic molecules.
• To explore methods to inhibit the sickling process in red blood cells.
• To reduce the clinical morbidity associated with sickle cell disease.

Main Methods:

• Review of in vitro red cell sickling studies.
• Analysis of in vivo studies using transgenic sickle animal models.
• Examination of the mode of action of potential anti-sickling agents.

Main Results:

• Numerous natural compounds from plant extracts have been investigated for anti-sickling properties.
• In vitro studies show some success, but the precise mechanisms of action are often not well understood.
• In vivo studies in animal models provide limited but encouraging data, with a significant lack of human studies.

Conclusions:

• Developing effective anti-sickling agents is crucial for managing sickle cell disease.
• Further research, particularly human studies, is needed to establish promising therapeutic agents.
• A definitive anti-sickling agent to prevent red blood cell sickling has yet to be established.