Cartilage Homeostasis
Cartilage Homeostasis - Related Videos
01:16
What is Homeostasis?
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2023
Maintaining homeostasis requires that the body continuously maintain its internal conditions. Each physiological condition has a particular set point, from body temperature to blood pressure to levels of certain nutrients. A set point is the physiological value around which the normal range fluctuates. A normal range is a restricted set of values that is optimally healthful and stable. For example, the set point for normal human body temperature is approximately 37°C (98.6°F). Physiological...
01:31
pH Homeostasis
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2023
Acid-base homeostasis is essential for maintaining normal physiological activities in humans. The pH of various body fluids is strictly regulated because it is critical for the optimal activity of enzymes involved in metabolic reactions. Enzymes are basically proteins, so, any significant change in pH can affect their structure and activity. In humans, pH is regulated using three primary mechanisms— chemical buffer systems, respiratory regulation, and renal regulation. Respiratory Regulation of...
08:41
Monitoring Endoplasmic Reticulum Calcium Homeostasis Using a Gaussia Luciferase SERCaMP
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Cited by 8 •
2015
Endoplasmic reticulum calcium homeostasis is disrupted in diverse pathologies. A secreted ER calcium monitoring protein (SERCaMP) reporter can be used to detect disruptions in the ER calcium store. This protocol describes the use of a Gaussia luciferase SERCaMP to examine ER calcium homeostasis in vitro and in vivo.
01:21
Skeleton and Calcium Homeostasis
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2023
Calcium is not only the most abundant mineral in bone but also the most abundant mineral in the human body. Calcium ions are needed for bone mineralization, tooth health, heart rate regulation and strength of contraction, blood coagulation, the contraction of smooth and skeletal muscle cells, and the regulation of nerve impulse conduction. The average calcium level in the blood is about 10 mg/dL. When the body cannot maintain this level, a person will experience hypo or hypercalcemia.
02:27
Safranin-O Staining: A Method to Visualize the Structural Integrity and Cellularity of Cartilage
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2025
In this video, we demonstrate a staining procedure for cartilage using safranin-orange. This method helps visualize the cartilage and detect any damage.
FAQs
Mechanical loading and biochemical signals act as regulatory inputs for chondrocytes, guiding how these cells maintain cartilage composition and structure. Their effects are important because cartilage must remain resilient while supporting movement and limiting friction. Changes in loading or signaling can shift chondrocyte activity away from balanced maintenance, helping explain how abnormal stress or inflammation may contribute to joint deterioration.
Chondrocytes preserve cartilage by coordinating extracellular matrix synthesis with matrix breakdown. Collagen and proteoglycans are key matrix components produced during this maintenance process, contributing to the tissue’s structural and functional properties. The relationship among the cells, these components, and their rates of production and loss determines whether cartilage retains its organization or progressively loses matrix.
When matrix synthesis and breakdown are no longer balanced, cartilage composition and structure can change. Injury, inflammation, aging, and abnormal stress are identified contributors to this disruption, while altered chondrocyte activity can intensify matrix loss. These changes are medically important because they may contribute to osteoarthritis and other joint disorders that impair normal joint function.
Studying cartilage homeostasis provides a framework for examining changes in cartilage composition, structure, and function during disease. It helps connect altered chondrocyte activity and matrix loss with conditions such as osteoarthritis. In medicine, this perspective can support disease assessment by focusing attention on the biological processes that distinguish preserved joint function from progressive tissue deterioration.
Cartilage repair and tissue engineering can use principles of cartilage regulation to address the requirements of healthy tissue maintenance. The relevant focus includes extracellular matrix composition, chondrocyte activity, and the balance between matrix synthesis and breakdown. Applying these principles is intended to promote tissue with appropriate structure and function rather than merely replacing damaged material.
The central therapeutic goals are to restore or protect joint function by supporting balanced cartilage maintenance and limiting processes associated with matrix loss. Because injury, inflammation, aging, and abnormal stress can disturb regulation, medical strategies may be designed around preserving cartilage composition and structure or encouraging recovery after damage. These goals directly relate to managing osteoarthritis and other joint disorders.