Mucosal Homeostasis
Mucosal 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.
02:55
Quantification of Immune Mediator Levels in Human Mucosal Lining Fluid
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2025
This video demonstrates the quantification of immune mediator levels in neonatal human nasal mucosal lining fluid extract. An electrochemiluminescence-based multiplex assay system measures these mediators by evaluating the intensity of emitted light when they are excited.
FAQs
Protection depends on coordinated layers rather than on any single component. Epithelial cells establish the surface boundary, while mucus, antimicrobial molecules, resident microbiota, and immune cells contribute complementary functions. Their cooperation can limit pathogen invasion without treating harmless food antigens and commensal organisms as threats. This balance links physical defense with immune tolerance.
Resident microbiota are active participants in mucosal homeostasis, not merely organisms tolerated by the host. Their presence is considered alongside epithelial integrity, mucus, antimicrobial molecules, and immune cells when evaluating host-microbe interactions. This perspective helps explain how mucosal tissues can support commensal organisms while maintaining defenses against pathogens, a central issue in immunology and infection.
Mucosal immune activity must distinguish potential pathogens from harmless exposures encountered at body surfaces. Excessive or misdirected activity can damage tissue, whereas insufficient protection may increase susceptibility to infection. Maintaining tolerance toward food antigens and commensal organisms while preserving pathogen defense therefore represents a functional balance, rather than simple immune activation or suppression.
Disruption can affect several protective elements at once, including barrier integrity, microbial communities, and immune regulation. The resulting imbalance may permit greater pathogen invasion, promote inflammation, or cause tissue damage. These consequences help connect altered mucosal conditions with inflammatory bowel disease and chronic respiratory disease, showing why barrier and immune functions must be considered together.
Investigations should examine relationships among epithelial cells, mucus, antimicrobial molecules, resident microbiota, and immune cells rather than assessing a single factor in isolation. Researchers can compare how these elements support protection and tolerance in the intestine, airways, or reproductive tract. Such analyses clarify host-microbe interactions and reveal which functions may be disturbed.
The concept provides a framework for developing interventions that support protective barrier and immune functions without undermining tolerance to harmless organisms and antigens. In immunology and infection research, this knowledge can guide vaccine strategies, probiotic approaches, and therapies intended to restore disrupted mucosal conditions. Their relevance depends on understanding the interaction among host tissues, microbiota, and immunity.