Abstract
Background: Salivary secretion is an important parameter reflecting the health status of an individual and has been used clinically for the diagnosis of various oral diseases, such as xerostomia. Salivary metabolomic profiling is considered an emerging potential tool for the detection of various systemic diseases. To our knowledge, this is the first study to investigate the quantitative relationship between salivary secretion volume and salivary metabolomic profile. Methods: To evaluate inter- and intra-day variations in salivary secretion, 234 saliva samples were collected three times per day for three days from 13 subjects and analyzed. Capillary electrophoresis-mass spectrometry was used for non-targeted quantification of water-soluble metabolites. Results: No significant inter- or intra-day variations were observed in salivary secretion volume. No significant inter-day variations were observed in metabolomic patterns. In contrast, significant intra-day variations were observed in salivary metabolomic profiles. The difference was more obvious for stimulated saliva than for unstimulated saliva. These profile changes were independent of salivary secretion volume. Conclusions: Our results indicated that diurnal change had a greater effect on salivary metabolomic profiles than the other factors. Hence, sampling time should be tightly controlled to minimize unexpected bias in the clinical use of salivary metabolomics.
| Original language | English |
|---|---|
| Pages (from-to) | 41-48 |
| Number of pages | 8 |
| Journal | Clinica Chimica Acta |
| Volume | 489 |
| DOIs | |
| Publication status | Published - 2019 Feb 1 |
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Keywords
- Capillary electrophoresis mass spectrometry
- Inter-day variation
- Intra-day variation
- Metabolomics
- Saliva
ASJC Scopus subject areas
- Biochemistry
- Clinical Biochemistry
- Biochemistry, medical
Cite this
Effects of inter-day and intra-day variation on salivary metabolomic profiles. / Kawanishi, Norishige; Hoshi, Noriyuki; Masahiro, Sugimoto; Enomoto, Ayame; Ota, Sana; Kaneko, Miku; Soga, Tomoyoshi; Tomita, Masaru; Kimoto, Katsuhiko.
In: Clinica Chimica Acta, Vol. 489, 01.02.2019, p. 41-48.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of inter-day and intra-day variation on salivary metabolomic profiles
AU - Kawanishi, Norishige
AU - Hoshi, Noriyuki
AU - Masahiro, Sugimoto
AU - Enomoto, Ayame
AU - Ota, Sana
AU - Kaneko, Miku
AU - Soga, Tomoyoshi
AU - Tomita, Masaru
AU - Kimoto, Katsuhiko
PY - 2019/2/1
Y1 - 2019/2/1
N2 - Background: Salivary secretion is an important parameter reflecting the health status of an individual and has been used clinically for the diagnosis of various oral diseases, such as xerostomia. Salivary metabolomic profiling is considered an emerging potential tool for the detection of various systemic diseases. To our knowledge, this is the first study to investigate the quantitative relationship between salivary secretion volume and salivary metabolomic profile. Methods: To evaluate inter- and intra-day variations in salivary secretion, 234 saliva samples were collected three times per day for three days from 13 subjects and analyzed. Capillary electrophoresis-mass spectrometry was used for non-targeted quantification of water-soluble metabolites. Results: No significant inter- or intra-day variations were observed in salivary secretion volume. No significant inter-day variations were observed in metabolomic patterns. In contrast, significant intra-day variations were observed in salivary metabolomic profiles. The difference was more obvious for stimulated saliva than for unstimulated saliva. These profile changes were independent of salivary secretion volume. Conclusions: Our results indicated that diurnal change had a greater effect on salivary metabolomic profiles than the other factors. Hence, sampling time should be tightly controlled to minimize unexpected bias in the clinical use of salivary metabolomics.
AB - Background: Salivary secretion is an important parameter reflecting the health status of an individual and has been used clinically for the diagnosis of various oral diseases, such as xerostomia. Salivary metabolomic profiling is considered an emerging potential tool for the detection of various systemic diseases. To our knowledge, this is the first study to investigate the quantitative relationship between salivary secretion volume and salivary metabolomic profile. Methods: To evaluate inter- and intra-day variations in salivary secretion, 234 saliva samples were collected three times per day for three days from 13 subjects and analyzed. Capillary electrophoresis-mass spectrometry was used for non-targeted quantification of water-soluble metabolites. Results: No significant inter- or intra-day variations were observed in salivary secretion volume. No significant inter-day variations were observed in metabolomic patterns. In contrast, significant intra-day variations were observed in salivary metabolomic profiles. The difference was more obvious for stimulated saliva than for unstimulated saliva. These profile changes were independent of salivary secretion volume. Conclusions: Our results indicated that diurnal change had a greater effect on salivary metabolomic profiles than the other factors. Hence, sampling time should be tightly controlled to minimize unexpected bias in the clinical use of salivary metabolomics.
KW - Capillary electrophoresis mass spectrometry
KW - Inter-day variation
KW - Intra-day variation
KW - Metabolomics
KW - Saliva
UR - http://www.scopus.com/inward/record.url?scp=85057298341&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057298341&partnerID=8YFLogxK
U2 - 10.1016/j.cca.2018.11.030
DO - 10.1016/j.cca.2018.11.030
M3 - Article
C2 - 30481500
AN - SCOPUS:85057298341
VL - 489
SP - 41
EP - 48
JO - Clinica Chimica Acta
JF - Clinica Chimica Acta
SN - 0009-8981
ER -