Related Experiment Video
Updated: Aug 6, 2026

05:48
Tissue Engineering of Tumor Stromal Microenvironment with Application to Cancer Cell Invasion
Published on: March 18, 2014
[Connective tissue dysplasias (hereditary collagenopathies)]
Klinicheskaia Meditsina
|August 1, 2006
Summary
Connective tissue dysplasia encompasses genetic disorders affecting collagen formation, leading to diverse symptoms. This review covers differentiated and non-differentiated types, including Marfan syndrome.
Area of Science:
- Medical Genetics
- Pathology
- Rheumatology
Background:
- Connective tissue dysplasia (CTD) comprises genetically diverse conditions impacting collagen development.
- These disorders manifest with varied clinical presentations during embryonic and postnatal growth.
- CTD includes both clearly defined genetic diseases and less specific conditions.
Observation:
- Differentiated CTDs feature distinct genetic defects and symptoms, exemplified by Marfan syndrome, Ehlers-Danlos syndrome, and osteogenesis imperfecta.
- Non-differentiated CTDs include conditions like primary mitral valve prolapse, joint hypermobility, and spinal abnormalities.
- The author presents a case study of Marfan syndrome.
Findings:
- The study categorizes connective tissue disorders based on genetic and clinical characteristics.
- It highlights the spectrum from specific genetic syndromes to prevalent minor anomalies.
- Marfan syndrome serves as a key example of a differentiated dysplasia.
Implications:
- Understanding CTD classification aids in diagnosis and management of collagen-related disorders.
- Recognizing minor anomalies associated with CTD can improve patient care.
- Further research into the genetic basis of CTD is warranted.
Related Concept Videos
Fibril-associated Collagen
Fibril-associated collagens are a type of collagens present in the extracellular matrix with interrupted triple helices or FACIT (Fibril-associated collagens interrupted triple-helices). FACIT help connect and attach the collagen fibrils with each other as well as with other proteins of the extracellular matrix.
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
For example, the type II collagen fibrils in cartilage have covalently bound type IX fibril-associated collagens at regular intervals. Other types of fibril-associated collagens are...
Type IV Collagen of Basal Lamina
Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
A type IV collagen molecule has six alpha chains which can exist in...
A type IV collagen molecule has six alpha chains which can exist in...
Desmosomes
The term desmosome derives from the Greek words "desmo" and "soma" meaning "adhesion bodies." This structure was first observed during the late 1800s and described as small, dense nodules in the epidermis. Desmosomes are button-like structures that help form an interlinked network of intermediate filaments across the cells. These junctions are essential to hold cells together under mechanical stress and to maintain tissue integrity. Desmosomes are multi-protein complexes comprising desmosomal...
Dense Connective Tissue
Dense connective tissue contains more collagen fibers than loose connective tissue. As a consequence, it displays greater resistance to stretching. There are two major categories of dense connective tissue— regular and irregular.
Dense Regular Connective Tissue
In dense regular connective tissue, fibers are arranged parallel to each other, enhancing its tensile strength and resistance to stretching in the direction of the fiber orientations. Ligaments and tendons are made of dense regular...
Dense Regular Connective Tissue
In dense regular connective tissue, fibers are arranged parallel to each other, enhancing its tensile strength and resistance to stretching in the direction of the fiber orientations. Ligaments and tendons are made of dense regular...
Collagens are the Major Structural Proteins of ECM
Three main types of fibers are secreted by fibroblasts: collagen fibers, elastic fibers, and reticular fibers. Collagen fiber is made from fibrous protein subunits linked together to form a long, straight fiber. Collagen fibers, while flexible, have great tensile strength, resist stretching, and give ligaments and tendons their characteristic resilience and strength. These fibers hold connective tissues together, even during the body's movement.
Connective tissue proper includes loose...
Connective tissue proper includes loose...
Extracellular Matrix
Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
