Related Experiment Video
Updated: Jul 26, 2025
09:16
Dynamic Quantitative Sensory Testing to Characterize Central Pain Processing
Published on: February 16, 2017
17.0K
Pain: The agony and the AstC
Tyler R Sizemore1, John R Carlson1
1Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT 06520-8103, USA.
Current Biology : CB
|June 20, 2023
Summary
Researchers discovered a specific neural circuit in the fly brain that actively suppresses pain signals. This finding reveals key mechanisms for pain control in biological systems.
Area of Science:
- Neuroscience
- Pain Research
- Molecular Biology
Background:
- Pain is a vital biological signal, but its chronic or excessive perception can be detrimental.
- Understanding the neural mechanisms that regulate pain perception is crucial for developing new pain management strategies.
Purpose of the Study:
- To identify the specific molecular and neuronal components responsible for suppressing pain in the fly brain.
- To elucidate the functional role of these components in pain modulation.
Main Methods:
- Utilized genetic screening and electrophysiology in Drosophila melanogaster (fruit flies).
- Investigated the function of a specific ion channel, a neuropeptide, and identified key neuronal populations involved in pain suppression.
Main Results:
- Identified a novel pathway involving a specific ion channel, a neuropeptide, and a pair of neurons that collectively inhibit pain.
- Demonstrated that activating this pathway effectively reduces pain-related behaviors in flies.
Conclusions:
- This study reveals a conserved mechanism for active pain suppression in the fly nervous system.
- The identified channel, neuropeptide, and neurons represent potential targets for future therapeutic interventions aimed at pain relief.
Related Concept Videos
01:20Pain
518
Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
518
01:29Blood and Nerve Supply to the Bones
11.3K
Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
11.3K
01:25Analgesia and Pain Management
668
Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
668
01:44Nociception
28.0K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
28.0K
01:19Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations
22
The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
22
01:30Angina I: Introduction
15
Definition and Symptoms: Angina (angina pectoris) is chest pain or discomfort caused by myocardial ischemia, which occurs when the heart muscle receives insufficient oxygen-rich blood. It typically manifests as pressing, squeezing, or crushing sensations in the chest and may radiate to the shoulders, arms, neck, jaw, or back.Primary Cause: In a healthy state, the coronary arteries can dilate (widen) to increase blood flow and meet the increased oxygen demand during physical activity or...
15