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Related Concept Videos

Focusing of Light in the Eye01:16

Focusing of Light in the Eye

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Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
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Coping strategies are methods people use to manage, tolerate, or reduce the effects of stressors. These strategies involve both behavioral and psychological actions to handle stressful situations. One common approach is problem-focused coping, which aims to change or eliminate the source of stress rather than merely addressing its consequences. This method involves taking direct action to resolve the issue causing stress.
For example, consider a student who struggles to understand their...
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Coping Strategies: Emotion Focused01:20

Coping Strategies: Emotion Focused

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Emotion-focused coping refers to a set of strategies aimed at managing the emotional impact of stressors, rather than directly addressing their causes. This approach involves altering one's emotional response to stressful situations to reduce their psychological effects. For example, individuals might talk with a friend or engage in activities like journaling to express their feelings. Such actions can help achieve emotional clarity or release, providing the psychological stability needed...
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Methods of Documentation IV: Focus Charting01:26

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Focus Charting, also known as the focus charting system or "focus documentation," is a systematic documentation approach used in healthcare to organize patient information in medical records.
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Focusing involves centering a conversation on a message's critical elements or concepts. Focusing is valuable if the talk is vague or patients begin to repeat themselves. Sometimes, when patients are asked about their symptoms, they may go off-topic and try to tell their entire life story. Respectfully, the nurse should bring the conversation back into focus.
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Self-Discrepancy Theory02:45

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One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.  
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Related Experiment Video

Updated: Feb 5, 2026

A Robust Discovery Platform for the Identification of Novel Mediators of Melanoma Metastasis
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Metformin: Focus on Melanoma.

Emilie Jaune1,2, Stéphane Rocchi1,2

  • 1INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Nice, France.

Frontiers in Endocrinology
|September 7, 2018
PubMed
Summary
This summary is machine-generated.

Metformin, a common diabetes drug, shows promise in cancer treatment. Research indicates it may reduce cancer risk and inhibit melanoma cell growth, suggesting potential for new cancer therapies.

Keywords:
AMPK pathwaybiguanidescancer treatmentmelanoma skin cancermetformin

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Area of Science:

  • Pharmacology
  • Oncology
  • Biochemistry

Background:

  • Metformin is a widely used biguanide for diabetes, benefiting 120 million patients globally.
  • It effectively lowers hyperglycemia without causing hypoglycemia and is well-tolerated.
  • Metformin's primary actions involve reducing hepatic gluconeogenesis and enhancing glucose uptake in skeletal muscles.

Purpose of the Study:

  • To review the effects of metformin on melanoma cells.
  • To explore the potential of metformin and biguanide derivatives as anti-cancer agents, particularly for melanoma.

Main Methods:

  • Review of existing literature on metformin's role in cancer regulation.
  • Analysis of novel data concerning metformin's impact on melanoma cells.

Main Results:

  • Metformin's mechanism involves mitochondrial action and activation of AMP-activated protein kinase (AMPK).
  • AMPK activation by metformin leads to decreased protein synthesis and cell proliferation.
  • Studies show metformin's positive effects on various cancer types, including prostate, breast, lung, and melanoma.
  • Epidemiological studies suggest metformin use is associated with a reduced risk of cancer compared to other diabetes treatments.

Conclusions:

  • Metformin demonstrates significant potential in regulating cancer cell proliferation and inducing cell death.
  • Developing metformin and related biguanide compounds could offer new therapeutic strategies for various cancers, with a specific focus on melanoma.