Protease-antiprotease Imbalance

Protease-antiprotease imbalance is a pathological disruption of the equilibrium between protein-cleaving enzymes and their natural inhibitors, a balance that helps regulate tissue remodeling and protect healthy structures. When protease activity exceeds antiprotease capacity, unchecked proteolysis can degrade extracellular matrix proteins, weaken tissue barriers, and amplify inflammatory injury. In clinical research, this concept helps explain how inherited alpha-1-antitrypsin deficiency or inflammatory conditions may contribute to lung and other organ damage. Assessing protease and inhibitor levels, activity, and genetic status can support disease characterization, biomarker development, and evaluation of therapies designed to restore proteolytic control.

Protease-antiprotease Imbalance - Related Videos

Research

JoVE Journal - Biology
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Use of the Protease Fluorescent Detection Kit to Determine Protease Activity

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Cited by 15 •

2009

The Protease Fluorescent Detection Kit is designed for the measurement of protease activity using fluorometry. It is also suitable for detection of trace amounts of protease contamination. The method is based on the proteolytic hydroysis of a proprietary formulation of a FITC-labeled casein substrate.

Education

JoVE Core - Anatomy and Physiology

Homeostatic Imbalance

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2025

Homeostasis is the maintenance of a stable internal environment within the body, which is crucial for the proper functioning of cells, tissues, organs, and organ systems. The body has various control mechanisms that work together to regulate various physiological parameters such as temperature, blood pressure, pH balance, and fluid balance, to name a few. These control mechanisms are based on feedback loops that can be either positive or negative. However, sometimes these feedback loops fail,...

Imbalances in Cardiac Output

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2025

The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation. CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send blood...

Research

JoVE Journal - Biology
Free Sample

Sigma's Non-specific Protease Activity Assay - Casein as a Substrate

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Cited by 414 •

2008

Proteases break peptide bonds. In the lab, it is often necessary to measure and/or compare the activity of proteases. Sigma's non-specific protease activity assay may be used as a standardized procedure to determine the activity of proteases.

Homeostatic Imbalances in Body Temperature

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2024

Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...

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