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Related Concept Videos

Introduction to Fibroblasts01:09

Introduction to Fibroblasts

Rudolph Virchow discovered spindle-shaped cells called fibroblasts in 1858. Inactive fibroblasts, called fibrocytes, become activated by various stimuli, such as growth factors and inflammatory cytokines. Activated fibroblasts play a crucial role in wound healing, inflammation, formation of new blood vessels, and cancer progression. Uncontrolled activation of fibroblasts results in fibrosis, the excess deposition of fibrous tissue, which can lead to scarring and affect normal organs. This...
Composition of Blood01:22

Composition of Blood

The blood in our bodies comprises three major components: blood plasma, formed elements, and the extracellular matrix. Blood plasma is a yellowish fluid that constitutes 55% of the total blood volume. It is primarily made up of water and essential substances such as electrolytes and proteins. Blood plasma serves as a medium for transporting blood cells and also contains nutrients, enzymes, hormones, antibodies, and gases.
Formed elements constitute the remaining 45% of the blood volume. These...
Fibronectins Connect Cells with ECM01:25

Fibronectins Connect Cells with ECM

Fibronectin is an adhesive glycoprotein present in the extracellular matrix of embryogenic and adult tissue. These molecules primarily aid in regulating cell motility and attachment. A fibronectin molecule is composed of two identical polypeptide chains attached to each other by a pair of disulfide bonds at the C-terminal.
Both proteoglycans and collagen are attached to fibronectin proteins, which, in turn, are attached to integrin proteins. These integrin proteins interact with transmembrane...
Composition of Blood Plasma01:24

Composition of Blood Plasma

Blood plasma is a fluid that contains approximately 92% water and 8% solutes. The solutes include various types of proteins, which constitute about 7% of the total solutes in the plasma. The high-molecular-weight proteins—albumins, globulins, and fibrinogen—are essential to plasma function. Albumins, making up about 60% of the plasma proteins, maintain the osmotic balance within blood vessels by preventing excessive water leakage. Additionally, albumins serve as carrier proteins, binding to...
Fluid Connective Tissues: Blood and Lymph01:20

Fluid Connective Tissues: Blood and Lymph

Blood and lymph are fluid connective tissues. They contain cells, also known as formed elements, circulating in a liquid extracellular matrix, the plasma. The formed elements are derived from hematopoietic stem cells in the bone marrow. Blood and lymph connect all vital parts and carry nutrients, oxygen, and other essential molecules like antibodies.
Blood
The blood flows through blood vessels— arteries, capillaries, and veins. Blood plasma is primarily made of proteins, solutes, and water.
Production of Formed Elements01:34

Production of Formed Elements

Hemangioblasts are multipotent stem cells originating from the mesoderm. They give rise to hematopoietic stem cells (HSCs), which undergo hematopoiesis to produce all the formed elements of blood. This process is regulated by a complex network of hematopoietic growth factors, including transcription factors, growth factors, and cytokines. These factors stimulate the HSCs to divide and differentiate, though some HSCs remain undifferentiated to maintain a self-renewing pool.
Most HSCs commit to...

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Ultrasonic-augmented Primary Adult Fibroblast Isolation
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THE RACES THAT CONSTITUTE THE GROUP OF COMMON FIBROBLASTS : I. THE EFFECT OF BLOOD PLASMA.

R C Parker1

  • 1Laboratories of The Rockefeller Institute for Medical Research.

The Journal of Experimental Medicine
|October 30, 2009
PubMed
Summary
This summary is machine-generated.

Fibroblast cell maturation is inhibited by high nutrient availability, causing them to remain in an embryonic state. In vitro, fibroblasts can transform into macrophages, suggesting they are variations of the same cell type.

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Area of Science:

  • Cell Biology
  • Developmental Biology
  • Tissue Engineering

Background:

  • Fibroblasts are crucial connective tissue cells with diverse differentiation potentials.
  • Understanding fibroblast plasticity is key to regenerative medicine and disease modeling.
  • Previous research has explored fibroblast behavior under various culture conditions.

Purpose of the Study:

  • To investigate the relationship between fibroblast growth conditions and their maturation.
  • To explore the potential of fibroblasts to differentiate into other cell types, specifically macrophages.
  • To determine if fibroblasts and macrophages represent distinct cell types or variations of a single type.

Main Methods:

  • Culturing fibroblasts in vitro under varying nutrient concentrations.
  • Observing fibroblast morphology and behavior over time.
  • Assessing the potential for fibroblast-to-macrophage differentiation through structural and functional analysis.

Main Results:

  • Fibroblast maturation is inversely related to nutrient availability; high nutrient levels maintain an embryonic state.
  • Fibroblasts cultured in vitro can develop macrophage-like properties, irrespective of origin or duration in culture.
  • Fibroblast and macrophage characteristics are proposed to represent extreme variations of a single cell type.
  • Fibroblast phenotype in vitro is influenced by their origin and the evolving culture medium composition.

Conclusions:

  • Nutrient-rich environments suppress fibroblast maturation, maintaining pluripotency.
  • Fibroblasts possess latent macrophage differentiation potential, highlighting cellular plasticity.
  • Fibroblasts and macrophages are functionally and structurally related, likely representing a spectrum of a single cell lineage.