BIOCHEMISTRY JOURNAL
(HEMATOLOGY)
PLT
,1 Biochemistry Journal (Hematology)
Biochemical Aspect of Red Blood Cells
Red blood cells are the most common type of blood cell in the human body. They
are responsible for carrying oxygen from the lungs to the tissues and carbon dioxide
away from the tissues. Red blood cells (RBCs) are small, biconcave disks that lack a
nucleus. They are essentially a bag full of hemoglobin.
Here are some of the key reasons why RBCs are important:
• They transport oxygen to the tissues. Oxygen is essential for all cellular processes,
including energy production, growth, and repair. Red blood cells (RBCs) contain a
protein called hemoglobin, which binds to oxygen and transports it to the tissues
throughout the body.
• They remove carbon dioxide from the tissues. Carbon dioxide is a waste product of
cellular respiration. Red blood cells (RBCs) transport carbon dioxide from the tissues
back to the lungs, where it is exhaled.
• They maintain the body’s acid-base balance. The body’s acid-base balance is the
balance between acids and bases in the blood. Red blood cells (RBCs) help to maintain
this balance by acting as buffers, which means that they can absorb or release acids
and bases depending on the needs of the body.
• They regulate blood pressure. Red blood cells (RBCs) release a substance called
nitric oxide, which helps to relax the blood vessels. This can help to lower blood
pressure.
1
,2 Biochemistry Journal (Hematology)
• In addition to these essential functions, red blood cells (RBCs) also play a role in a
number of other important physiological processes, such as:
• Immune function: Red blood cells (RBCs) interact with white blood cells to help
fight infection.
• Wound healing: Red blood cells (RBCs) deliver oxygen and nutrients to the tissues
at the site of a wound, which helps to promote healing.
• Temperature regulation: Red blood cells (RBCs) help to regulate body temperature
by absorbing and releasing heat.
Other important facts about red blood cells (RBCs):
• The normal red blood cell count (RBC) varies slightly depending on sex and age.
❖ Men: 4.7 to 6.1 trillion cells per liter (x10 9 /L)
❖ Women: 4.2 to 5.4 trillion cells per liter (x10 9 /L)
❖ Children: 4.0 to 5.5 trillion cells per liter (x10 9 /L)
• Red blood cells (RBCs) make up about 45% of the blood volume .
• Red blood cells (RBCs)s can travel about 150,000 miles in a day.
• Red blood cells (RBCs) are constantly being produced and destroyed. About 200
billion RBCs are produced and destroyed each day.
Hematopoiesis
2
, 3 Biochemistry Journal (Hematology)
The bone marrow environment plays a vital role in hematopoiesis, the process by
which all blood cells are produced. It is a complex and dynamic system that is composed
of a variety of cell types, including stromal cells, osteoblasts, osteoclasts, endothelial
cells, and macrophages. These cells interact with each other and with HSCs and
progenitor cells to create a favorable environment for hematopoiesis.
One of the most important functions of the bone marrow microenvironment is to
provide a physical scaffold for HSCs and progenitor cells to adhere to and grow on. This
scaffold is provided by a network of stromal cells and extracellular matrix proteins.
It also provides a variety of signaling molecules, such as cytokines, growth factors,
and hormones, that are essential for the proliferation, differentiation, and survival of
HSCs and progenitor cells.
It also plays a role in protecting HSCs and progenitor cells from damage. Stromal
cells and other cells in the bone marrow microenvironment can secrete factors that
suppress apoptosis (programmed cell death) and promote DNA repair.
It also plays a role in the regulation of immune responses. Stromal cells
(connective tissue forming cells) in the bone marrow microenvironment can interact with
immune cells to promote tolerance and prevent autoimmune reactions.
3
(HEMATOLOGY)
PLT
,1 Biochemistry Journal (Hematology)
Biochemical Aspect of Red Blood Cells
Red blood cells are the most common type of blood cell in the human body. They
are responsible for carrying oxygen from the lungs to the tissues and carbon dioxide
away from the tissues. Red blood cells (RBCs) are small, biconcave disks that lack a
nucleus. They are essentially a bag full of hemoglobin.
Here are some of the key reasons why RBCs are important:
• They transport oxygen to the tissues. Oxygen is essential for all cellular processes,
including energy production, growth, and repair. Red blood cells (RBCs) contain a
protein called hemoglobin, which binds to oxygen and transports it to the tissues
throughout the body.
• They remove carbon dioxide from the tissues. Carbon dioxide is a waste product of
cellular respiration. Red blood cells (RBCs) transport carbon dioxide from the tissues
back to the lungs, where it is exhaled.
• They maintain the body’s acid-base balance. The body’s acid-base balance is the
balance between acids and bases in the blood. Red blood cells (RBCs) help to maintain
this balance by acting as buffers, which means that they can absorb or release acids
and bases depending on the needs of the body.
• They regulate blood pressure. Red blood cells (RBCs) release a substance called
nitric oxide, which helps to relax the blood vessels. This can help to lower blood
pressure.
1
,2 Biochemistry Journal (Hematology)
• In addition to these essential functions, red blood cells (RBCs) also play a role in a
number of other important physiological processes, such as:
• Immune function: Red blood cells (RBCs) interact with white blood cells to help
fight infection.
• Wound healing: Red blood cells (RBCs) deliver oxygen and nutrients to the tissues
at the site of a wound, which helps to promote healing.
• Temperature regulation: Red blood cells (RBCs) help to regulate body temperature
by absorbing and releasing heat.
Other important facts about red blood cells (RBCs):
• The normal red blood cell count (RBC) varies slightly depending on sex and age.
❖ Men: 4.7 to 6.1 trillion cells per liter (x10 9 /L)
❖ Women: 4.2 to 5.4 trillion cells per liter (x10 9 /L)
❖ Children: 4.0 to 5.5 trillion cells per liter (x10 9 /L)
• Red blood cells (RBCs) make up about 45% of the blood volume .
• Red blood cells (RBCs)s can travel about 150,000 miles in a day.
• Red blood cells (RBCs) are constantly being produced and destroyed. About 200
billion RBCs are produced and destroyed each day.
Hematopoiesis
2
, 3 Biochemistry Journal (Hematology)
The bone marrow environment plays a vital role in hematopoiesis, the process by
which all blood cells are produced. It is a complex and dynamic system that is composed
of a variety of cell types, including stromal cells, osteoblasts, osteoclasts, endothelial
cells, and macrophages. These cells interact with each other and with HSCs and
progenitor cells to create a favorable environment for hematopoiesis.
One of the most important functions of the bone marrow microenvironment is to
provide a physical scaffold for HSCs and progenitor cells to adhere to and grow on. This
scaffold is provided by a network of stromal cells and extracellular matrix proteins.
It also provides a variety of signaling molecules, such as cytokines, growth factors,
and hormones, that are essential for the proliferation, differentiation, and survival of
HSCs and progenitor cells.
It also plays a role in protecting HSCs and progenitor cells from damage. Stromal
cells and other cells in the bone marrow microenvironment can secrete factors that
suppress apoptosis (programmed cell death) and promote DNA repair.
It also plays a role in the regulation of immune responses. Stromal cells
(connective tissue forming cells) in the bone marrow microenvironment can interact with
immune cells to promote tolerance and prevent autoimmune reactions.
3
