Aminostatic hypothesis

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Revision as of 09:44, 25 October 2011 by imported>Lisa Robertson
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In 1956, Mellinkoff proposed the aminostatic hypothesis, stimulated by the observation that when normal individuals ingest protein, appetite diminishes as the serum amino acid concentration rises and vice versa.[1] He believed this was due to a satiety centre in the brain, sensitive to serum amino acids levels, that caused a suppression of hunger once the serum levels reached a certain point.Ashleigh Fraser 15:34, 25 October 2011 (UTC)


Experimental Evidence

-experimental evidence has agreed with the aminostatic hypothesisAshleigh Fraser 15:34, 25 October 2011 (UTC)

-they have found that high protein diets act on satiety and thermogenesisAshleigh Fraser 15:34, 25 October 2011 (UTC)

Science behind the theory

Use as a method of weight loss

Obesity is everywhere. Around 33% of American adults and 17% of children are obese (A). In the UK, the statistics are not looking much brighter with 25% of adults and 10% of children showing signs of obesity. It has been proposed in the UK that 60% of men, 50% of women and 25% of children will become obese by 2050 if no preventative measures are taken (B). This growing prevalence of obesity needs a solution. Many hypotheses regarding different weight loss diets have been proposed. So how can the aminostatic hypothesis be used for treatment? Perhaps a high protein diet is the answer. Lisa Robertson 15:37, 25 October 2011 (UTC)


  • What does the diet consist of? Benefits of high protein diet with supporting evidence (2,3,7,8,10). Animal/veg protein best? Lisa Robertson 15:37, 25 October 2011 (UTC)

Limitations

-are there any downsides to a high protein diet?

-appetite is a feeling so different participants in experiments may report it differently and so results may not be completely accurateAshleigh Fraser 15:34, 25 October 2011 (UTC)

  • Consequent effects on renal function. Usually low carb diet is needed along with HP diet to gain full beneficial effects (subjects more satisfied).


Conclusion

  • Future studies, maybe more into long term effects of diet. Any drugs that may interact with pathways? Lisa Robertson 15:44, 25 October 2011 (UTC)

References

  1. Mellinkoff SM et al. (1956) Relationship between serum amino acid concentration and fluctuations in appetite J Appl Physiol 8:535-8 PMID 13295170

(A)Centers for Disease Control and Prevention. (2011). U.S Obesity Trends. Available: http://www.cdc.gov/obesity/data/trends.html. Last accessed 25th Oct 2011.

(B)Department of Health. (2011). Obesity. Available: http://www.dh.gov.uk/en/Publichealth/Obesity/index.htm. Last accessed 25th Oct 2011.