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Short-term effect of induced alterations in testosterone levels on fasting plasma amino acid levels in healthy young men

Barbara Sahlin, K. (författare)
Pla, Indira (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Protein Science and Imaging,Clinical Chemistry, Malmö,Lund University Research Groups,Skåne University Hospital
de Siqueira Guedes, Jéssica (författare)
Federal University of Rio de Janeiro
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Pawłowski, Krzysztof (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Protein Science and Imaging,Clinical Chemistry, Malmö,Lund University Research Groups,Warsaw University of Life Sciences,University of Texas Southwestern Medical Center,Skåne University Hospital
Appelqvist, Roger (författare)
Lund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Clinical Protein Science and Imaging,Forskargrupper vid Lunds universitet,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH,Lund University Research Groups,Skåne University Hospital
Marko-Varga, György (författare)
Lund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Clinical Protein Science and Imaging,Forskargrupper vid Lunds universitet,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH,Lund University Research Groups,Tokyo Medical University,Skåne University Hospital
Domont, Gilberto Barbosa (författare)
Federal University of Rio de Janeiro
Nogueira, Fábio César Sousa (författare)
Federal University of Rio de Janeiro
Giwercman, Aleksander (författare)
Lund University,Lunds universitet,Reproduktionsmedicin, Malmö,Forskargrupper vid Lunds universitet,Reproductive medicine, Malmö,Lund University Research Groups
Sanchez, Aniel (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Protein Science and Imaging,Clinical Chemistry, Malmö,Lund University Research Groups,Skåne University Hospital
Malm, Johan (författare)
Lund University,Lunds universitet,Klinisk kemi, Malmö,Forskargrupper vid Lunds universitet,Clinical Protein Science and Imaging,Clinical Chemistry, Malmö,Lund University Research Groups,Skåne University Hospital
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 (creator_code:org_t)
2021-11-22
2021
Engelska.
Ingår i: Life. - : MDPI AG. - 0024-3019 .- 2075-1729. ; 11:11
Relaterad länk:
http://dx.doi.org/10... (free)
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https://www.mdpi.com...
https://lup.lub.lu.s...
https://doi.org/10.3...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
Stäng  
  • Long term effect of testosterone (T) deficiency impairs metabolism and is associated with muscle degradation and metabolic disease. The association seems to have a bidirectional nature and is not well understood. The present study aims to investigate the early and unidirectional metabolic effect of induced T changes by measuring fasting amino acid (AA) levels in a human model, in which short-term T alterations were induced. We designed a human model of 30 healthy young males with pharmacologically induced T changes, which resulted in three time points for blood collection: (A) baseline, (B) low T (3 weeks post administration of gonadotropin releasing hormone antagonist) and (C) restored T (2 weeks after injection of T undecanoate). The influence of T on AAs was analyzed by spectrophotometry on plasma samples. Levels of 9 out of 23 AAs, of which 7 were essential AAs, were significantly increased at low T and are restored upon T supplementation. Levels of tyrosine and phenylalanine were most strongly associated to T changes. Short-term effect of T changes suggests an increased protein breakdown that is restored upon T supplementation. Fasting AA levels are able to monitor the early metabolic changes induced by the T fluctuations.

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Endokrinologi och diabetes (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Endocrinology and Diabetes (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Hälsovetenskap -- Näringslära (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Health Sciences -- Nutrition and Dietetics (hsv//eng)

Nyckelord

Gluconeogenesis
Protein breakdown
Testosterone

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art (ämneskategori)
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