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Related Concept Videos

Anorexia Nervosa01:28

Anorexia Nervosa

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Anorexia nervosa is a complex and severe eating disorder characterized by an intense fear of weight gain, an unrelenting pursuit of thinness, and a distorted body image. It often leads to dangerously low body weight relative to an individual's age and height. This disorder is marked by significant physical and psychological consequences, making it one of the most life-threatening psychiatric illnesses.
Symptoms and Physical Effects
Individuals with anorexia nervosa commonly exhibit extreme...
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Bulimia nervosa is a complex and severe eating disorder characterized by a cyclical pattern of binge-and-purge eating pattern. It generally involves an episode of binge eating, followed by compensatory behaviors such as vomiting, excessive exercise, laxative use, or fasting, to prevent weight gain. Despite often maintaining a normal weight, individuals with bulimia are intensely preoccupied with their body image and harbor an overwhelming fear of gaining weight. This can contribute to the...
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Binge eating disorder is a significant mental health condition characterized by recurrent episodes of excessive food consumption within a short period, accompanied by a perceived loss of control over eating behavior. Unlike occasional overeating, binge eating disorder is marked by distressing emotions such as guilt, shame, and anxiety following binge episodes. The disorder affects individuals across different ages and backgrounds, with profound implications for physical and psychological...
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Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
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Without prolonged fasting, healthy individuals maintain blood glucose levels above 3.5 mM due to a well-adapted neuroendocrine counterregulatory system that effectively prevents acute hypoglycemia, a potentially life-threatening condition. The primary clinical scenarios for hypoglycemia encompass diabetes treatment, inappropriate production of endogenous insulin or insulin-like substances by tumors, and the use of glucose-lowering agents in non-diabetic individuals. Notably, hypoglycemia in the...
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Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.
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Related Experiment Video

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Assessing Activity-based Anorexia in Mice
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Copeptin in anorexia nervosa.

Jens P Goetze1, René Klinkby Støving2,3,4,5

  • 1Department of Clinical Biochemistry, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.

Brain and Behavior
|February 20, 2020
PubMed
Summary
This summary is machine-generated.

Copeptin, a stable marker for antidiuretic hormone (ADH), was not different in women with anorexia nervosa (AN) compared to controls. This suggests ADH may not be critical in the psychological stress contributing to AN.

Keywords:
anorexia nervosaantidiuretic hormonearginine vasopressincopeptininsulin

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Area of Science:

  • Endocrinology
  • Neuroscience
  • Psychiatry

Background:

  • Antidiuretic hormone (ADH) plays a role in stress, depression, and anxiety.
  • Previous studies on ADH in anorexia nervosa (AN) yielded conflicting results, potentially due to ADH's short half-life.
  • Copeptin, a stable ADH precursor fragment, is a reliable clinical marker for ADH activity and a biomarker for insulin resistance.

Purpose of the Study:

  • To investigate copeptin levels in patients with anorexia nervosa (AN).
  • To assess the relationship between copeptin and insulin resistance in AN.
  • To determine if ADH activity, measured by copeptin, is altered in stabilized AN patients.

Main Methods:

  • Fasting plasma copeptin levels were measured in 25 women with AN (BMI 13.0 ± 2.0) and 25 age-matched healthy women.
  • Insulin resistance was assessed using the homeostasis model assessment (HOMA-IR).

Main Results:

  • No significant difference in fasting copeptin levels was observed between women with AN and controls (6.8 ± 1.8 vs. 5.5 ± 0.5 pmol/L).
  • Copeptin concentrations showed a correlation with insulin resistance, as assessed by HOMA-IR.

Conclusions:

  • Copeptin levels, reflecting ADH activity, are not altered in fluid- and electrolyte-stabilized patients with severe AN.
  • These findings suggest that ADH may not be a critical factor in the psychophysiological stress response associated with AN.