Salivary Signal Molecules for Neural and Vascular Homeostasis in T2DM
- Conditions
- Type 2 Diabetes
- Interventions
- Other: saliva samples collecting
- Registration Number
- NCT06327503
- Lead Sponsor
- University of Belgrade
- Brief Summary
Various signal molecules are detected in blood and tissues of patients with T2DM, that are important for the function of neural tissue in diabetic setting. Among them, specifically important are neuroprotective and neurotrophic growth factors such as nerve growth factor (NGF), glial cells - derived neurotrophic factor (GDNF) and brain-derived neurotrophic factor (BDNF). Furthermore, several other signal molecules are discovered to affect vascular tissues homeostasis in T2DM, including soluble alpha-klotho (s-Klotho), vascular endothelial growth factor (VEGF) and interleukin-6 (IL-6). Most of these molecules are also detected in saliva in various states and diseases of orofacial system, but data about their levels in saliva of T2DM patients are lacking, although neural and vascular diabetic complications are present in orofacial tissues and organs. Also, there is no data about presence and levels of s-Klotho in saliva of healthy or T2DM patients, although it was reported that this molecule exerts protective effect on the salivary glands tissue. Salivary opiorphin is recently discovered pentapeptide, primarily isolated from saliva. It acts as an inhibitor of the enzymes that perform degradation of endogenous antinociceptive molecules enkephalins, affecting nociceptive signal transduction. This may be of special importance since some intraoral complications of T2DM (e.g. burning mouth) may have underlying peripheral neural changes as a pathophysiological mechanism. Against this background, the aim of the study is to detect the presence and levels of mentioned signal molecules in saliva of patients with and without T2DM.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 24
- patients with maxillary and mandibular total edentulism with and without T2DM
- for patients with T2DM - presence of controlled T2DM
- presence of the acute pain or swelling in orofacial region
- antibiotic therapy up to three weeks prior to study start
- conditions or diseases that affect the function of salivary glands (e.g. Sjogren syndrome)
- radiotherapy of the orofacial region
- tobacco smokers
- alcohol and/or drug abuse
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description T2DM patients saliva samples collecting patients with diagnosed controlled Type 2 Diabetes Mellitus with or without systemic complications non-T2DM patients saliva samples collecting age and general health matched control group without Type 2 Diabetes Mellitus
- Primary Outcome Measures
Name Time Method IL-6 levels in saliva on 5th day after sample collection levels of interleukin-6 in saliva samples obtained from T2DM and non-T2DM groups,
NGF levels in saliva on 5th day after sample collection levels of nerve growth factor in saliva samples obtained from T2DM and non-T2DM groups, detected by means of ELISA method
opiorphin levels in saliva on 5th day after sample collection levels of opiorphin in saliva samples obtained from T2DM and non-T2DM groups,
BDNF levels in saliva on 5th day after sample collection levels of brain derived neurotrophic factor in saliva samples obtained from T2DM and non-T2DM groups,
s-Klotho levels in saliva on 5th day after sample collection levels of soluble alpha-klotho in saliva samples obtained from T2DM and non-T2DM groups,
VEGF levels in saliva on 5th day after sample collection levels of vascular endothelial growth factor in saliva samples obtained from T2DM and non-T2DM groups,
GDNF levels in saliva on 5th day after sample collection levels of glial-cells derived neurotrophic factor in saliva samples obtained from T2DM and non-T2DM groups, detected by means of ELISA method
- Secondary Outcome Measures
Name Time Method unstimulated saliva flow immediately after sample collection measuring of the flow of unstimulated saliva by dividing the volume of saliva with the time necessary for the sample collection
Trial Locations
- Locations (1)
University of Belgrade School of Dental Medicine
🇷🇸Belgrade, Serbia