Title |
Proteomics tools reveal startlingly high amounts of oxytocin in plasma and serum
|
---|---|
Published in |
Scientific Reports, August 2016
|
DOI | 10.1038/srep31693 |
Pubmed ID | |
Authors |
Ole Kristian Brandtzaeg, Elin Johnsen, Hanne Roberg-Larsen, Knut Fredrik Seip, Evan L. MacLean, Laurence R. Gesquiere, Siri Leknes, Elsa Lundanes, Steven Ray Wilson |
Abstract |
The neuropeptide oxytocin (OT) is associated with a plethora of social behaviors, and is a key topic at the intersection of psychology and biology. However, tools for measuring OT are still not fully developed. We describe a robust nano liquid chromatography-mass spectrometry (nanoLC-MS) platform for measuring the total amount of OT in human plasma/serum. OT binds strongly to plasma proteins, but a reduction/alkylation (R/A) procedure breaks this bond, enabling ample detection of total OT. The method (R/A + robust nanoLC-MS) was used to determine total OT plasma/serum levels to startlingly high concentrations (high pg/mL-ng/mL). Similar results were obtained when combining R/A and ELISA. Compared to measuring free OT, measuring total OT can have advantages in e.g. biomarker studies. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 9 | 29% |
Australia | 2 | 6% |
Italy | 1 | 3% |
Canada | 1 | 3% |
Netherlands | 1 | 3% |
India | 1 | 3% |
Malaysia | 1 | 3% |
United Kingdom | 1 | 3% |
Norway | 1 | 3% |
Other | 0 | 0% |
Unknown | 13 | 42% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 19 | 61% |
Scientists | 7 | 23% |
Science communicators (journalists, bloggers, editors) | 3 | 10% |
Practitioners (doctors, other healthcare professionals) | 2 | 6% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Japan | 1 | <1% |
Hungary | 1 | <1% |
United States | 1 | <1% |
Norway | 1 | <1% |
Unknown | 116 | 97% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Researcher | 26 | 22% |
Student > Ph. D. Student | 15 | 13% |
Student > Doctoral Student | 12 | 10% |
Student > Bachelor | 11 | 9% |
Student > Master | 10 | 8% |
Other | 19 | 16% |
Unknown | 27 | 23% |
Readers by discipline | Count | As % |
---|---|---|
Psychology | 18 | 15% |
Agricultural and Biological Sciences | 14 | 12% |
Neuroscience | 10 | 8% |
Medicine and Dentistry | 9 | 8% |
Biochemistry, Genetics and Molecular Biology | 8 | 7% |
Other | 23 | 19% |
Unknown | 38 | 32% |