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Related Concept Videos

Analgesia and Pain Management01:25

Analgesia and Pain Management

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...
Nociception01:44

Nociception

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. Thus, pain helps the...
Pain01:20

Pain

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...
Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

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...
Primary Motives: Sleep, Sex, and Pain Avoidance01:24

Primary Motives: Sleep, Sex, and Pain Avoidance

Primary motives such as sleep, sex, and pain avoidance are crucial drivers of behavior in humans and animals. These motives ensure survival, reproductive success, and overall well-being by prompting actions that meet essential bodily needs.
Sleep is a fundamental physiological drive that fosters a state of restfulness crucial for several bodily functions. It facilitates body restoration, the process by which the body repairs, rejuvenates, and maintains itself during sleep, including memory...
Acute Inflammation II: Local and Systemic Effects01:25

Acute Inflammation II: Local and Systemic Effects

Acute inflammation produces a coordinated set of local and systemic changes that limit injury, eliminate pathogens, and initiate repair. These responses arise within minutes of infection, trauma, or chemical insult and are driven by vascular alterations and leukocyte-derived mediators. When the stimulus resolves, the reaction typically abates within days.Local EffectsAt the site of injury, arteriolar vasodilation increases blood flow, resulting in redness and warmth. Simultaneously, increased...

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Related Experiment Video

Updated: May 10, 2026

Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
07:23

Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities

Published on: July 29, 2014

Estrogenic influences in pain processing.

Åsa Amandusson1, Anders Blomqvist

  • 1Department of Clinical Neurophysiology, Uppsala University, 751 85 Uppsala, Sweden.

Frontiers in Neuroendocrinology
|July 3, 2013
PubMed
Summary
This summary is machine-generated.

Gonadal hormones, particularly estrogens, significantly influence pain signaling pathways. This review details their effects on nociceptive processing, especially within the spinal cord.

Keywords:
EnkephalinEstrogen receptorsEstrogensGonadal hormonesMedullary dorsal hornNociceptionOpioidPain mechanismsSpinal dorsal hornSteroid hormones

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Spontaneous and Evoked Measures of Pain in Murine Models of Monoarticular Knee Pain
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Spontaneous and Evoked Measures of Pain in Murine Models of Monoarticular Knee Pain

Published on: February 22, 2019

Related Experiment Videos

Last Updated: May 10, 2026

Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities
07:23

Assessment of Morphine-induced Hyperalgesia and Analgesic Tolerance in Mice Using Thermal and Mechanical Nociceptive Modalities

Published on: July 29, 2014

Spontaneous and Evoked Measures of Pain in Murine Models of Monoarticular Knee Pain
08:03

Spontaneous and Evoked Measures of Pain in Murine Models of Monoarticular Knee Pain

Published on: February 22, 2019

Area of Science:

  • Neuroendocrinology
  • Pain Research
  • Neuroscience

Background:

  • Gonadal hormones regulate diverse physiological functions beyond reproduction, including sensory perception.
  • Estrogens are implicated in modulating pain transmission through complex neuroanatomical and neurochemical pathways.

Purpose of the Study:

  • To review morphological and biochemical evidence of gonadal hormone effects on nociception.
  • To focus on the role of estrogens and spinal cord mechanisms in pain modulation.

Main Methods:

  • Literature review of morphological studies.
  • Literature review of biochemical studies.
  • Analysis of neuroanatomical and neurochemical evidence.

Main Results:

  • Gonadal hormones, especially estrogens, exhibit significant modulation of nociceptive processing.
  • Evidence supports specific neuronal circuits and systems involved in hormone-mediated pain control.
  • Spinal cord mechanisms are a key site for estrogenic influence on pain.

Conclusions:

  • Estrogens play a crucial role in modulating pain perception and transmission.
  • Understanding these mechanisms is vital for developing targeted pain therapies.
  • Further research into spinal cord pathways is warranted.