Apelin, orexin-A and leptin plasma levels in morbid obesity and effect of gastric banding
Abstract
Unlabelled Maintenance of human energy homeostasis is regulated by a complex network. Peptides secreted from the gastrointestinal tract (GI) are signaling to the brain and other organs initiating or terminating food intake and energy expenditure. In the present study we investigated basal plasma levels of apelin, orexin-A, and leptin in morbid obese patients. In addition, we measured in a subgroup of these patients in the same individual orexin-A and leptin plasma levels one year after gastric banding surgery.Methods Basal plasma values were determined in obese patients (BMI=48+/-1 kg/m2n=32) after an overnight fast and compared to healthy, normal weighted (BMI=22+/-2 kg/m2n=12) controls. In addition, blood samples were collected in a subgroup of patients (BMI=48+/-1 kg/m2n=8) the day before surgery and 1 year after the operation. Apelin, orexin-A, and leptin levels were analysed using ELISAs.Results One year after the operation obese patients significantly lost weight (from 48+/-2 kg/m2 to 39+/-2 kg/m2; p<0,001). Apelin, orexin-A and leptin levels in obese patients were significantly higher compared to control individuals (736+/-50 pg/ml vs. 174+/-14 pg/ml, p<0.0001; 75.3+/-24.1 pg/ml vs. 0.8+/-0.4 pg/ml, p<0.0001; 79.0+/-2.4 ng/ml vs. 5.8+/-0.8 ng/ml, p<0.0001, respectively). Apelin and leptin plasma concentrations also correlated significantly with BMI (r=0.769, p<0.0001; r=0.778; p<0.0001, respectively), while orexin-A correlation was rather weak (r=0.335, p<0.03). No difference between pre- and post-operative orexin-A levels was observed, while leptin plasma levels significantly decreased from 45.1+/-5.4 ng/ml to 27.3+/-6.0 ng/ml (p=0.015).Conclusions Apelin, orexin-A, and leptin plasma levels correlated positively with the BMI. One year after gastric banding with significant loss in BMI basal plasma levels of leptin decreased, while orexin-A remained unchanged.
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Prior work to measure stress-related biomarkers has utilized high-performance liquid chromatography (HPLC), enzyme-linked immunosorbent assay, radioimmunoassay kit, or a HPLC mass spectrometry (MS) system.
“Prior work to measure stress-related biomarkers has utilized high-performance liquid chromatography (HPLC),99 enzyme-linked immunosorbent assay,100 radioimmunoassay kit,101 or a HPLC mass spectrometry (MS) system.102”
From Wearable sensors for monitoring the physiological and biochemical profile of the athlete (2019) · cites this paper as [100]
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- Authors
- Heinonen, M. V., Purhonen, A. K., Miettinen, P., Pääkkönen, M., Pirinen, E., Alhava, E., Åkerman, K., & Herzig, K. H.
- Affiliations
- University of Eastern Finland (FI)
- Corresponding author
- Herzig, K.H.
- Venue
- Regulatory Peptides
- Publisher
- Elsevier BV
- Published
- 2005-08
- Volume
- 130
- Issue
- 1-2
- Pages
- 7-13
- ISSN
- 0167-0115 (ISSN-L)
- OpenAlex
- W2082263940
- Cited by
- 232
- References
- 49
- Citations by year
- 2026: 4 · 2025: 1 · 2024: 5 · 2023: 3 · 2022: 11 · 2021: 8 · 2020: 15 · 2019: 12 · 2018: 18 · 2017: 15 · 2016: 7 · 2015: 7 · 2014: 15 · 2013: 11 · 2012: 16
- FWCI
- 5.74
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Regulatory Peptides (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Kuopion Yliopistollinen Sairaala
- Novo Nordisk Fonden
- Jalmari ja Rauha Ahokkaan Säätiö
- Academy of Finland
- Topics
- Health Sciences › Medicine › Pharmacology › Apelin-related biomedical research
- Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Regulation of Appetite and Obesity
- Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
- Keywords
- apelin, orexin-A, leptin, morbid obesity, gastric banding, bariatric surgery, plasma peptide levels, body mass index, energy homeostasis, weight loss, appetite regulation, satiety hormones, gastrointestinal peptides, energy expenditure, food intake regulation
- MeSH terms
- Orexins, Apelin, Adult, Carrier Proteins, Enzyme-Linked Immunosorbent Assay, Female, Gastric Mucosa, Humans, Male, Middle Aged, Neuropeptides, Obesity, Morbid, Time Factors, Gastroplasty, Weight Loss, Body Mass Index, Leptin, Intercellular Signaling Peptides and Proteins, Gastrointestinal Tract, Intracellular Signaling Peptides and Proteins
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