title: Effect of streptozotocin-induced diabetes on lipids metabolism in the salivary glands.
abstract: Diabetes is one of the most common metabolic diseases. Moreover, previous studies indicate that diabetes may cause changes in the salivary glands phenotype and in the composition of saliva itself. Therefore, the main objective of this study was to determine the effects of streptozotocin induced diabetes on lipid profile of the rat salivary glands.
  
  
  
  Male Wistar rats were divided into two groups: control and STZ-induced diabetes. At the end of the experiment all animals were sacrificed and samples of the parotid and submandibular salivary glands were excised. Major lipid fractions concentrations were determined by means of chromatography (TLC and GC).
  
  
  
  We observed a significant increase (∼3.5 fold) in the level of triacylglycerol in both the parotid and submandibular salivary glands of diabetic rats. The abovementioned changes were accompanied by significant, although less dramatic (i.e. from -60% to -90%), decrements in the levels of other lipid classes (phospholipids, free fatty acids and diacylglycerol).
  
  
  
  In our study we have showed, presumably for the first time, that streptozotocin induced diabetes causes decrement in PH content with subsequent atrophy and malfunction in both parotid and submandibular salivary glands. Another novel finding of our research is that diabetic rats were characterized by an increased TG accumulation in both parotid and submandibular salivary glands. The later one could be a clinical manifestation of diabetes.
authors.affiliation: County Veterinary Inspection, Poland.
authors.forename: Jan
authors.initials: J
authors.lastname: Matczuk
authors.affiliation: Medical University of Bialystok, Department of Conservative Dentistry, Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Zalewska
authors.affiliation: Medical University of Bialystok, Department of Physiology, Poland.
authors.forename: Bartłomiej
authors.initials: B
authors.lastname: Łukaszuk
authors.affiliation: Medical University of Bialystok Department of Hygiene, Epidemiology and Ergonomics, Poland.
authors.forename: Marta
authors.initials: M
authors.lastname: Garbowska
authors.affiliation: Medical University of Bialystok, Department of Physiology, Poland.
authors.forename: Adrian
authors.initials: A
authors.lastname: Chabowski
authors.affiliation: Medical University of Bialystok Department of Hygiene, Epidemiology and Ergonomics, Poland.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Żendzian-Piotrowska
authors.affiliation: Medical University of Bialystok, Department of Physiology, Poland. Electronic address: krzysztof.kurek@umb.edu.pl.
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Kurek
mesh_terms: D000818:Animals; D001786:Blood Glucose / Q000378:metabolism; D001835:Body Weight; D003921:Diabetes Mellitus, Experimental / Q000097:blood / Q000378:metabolism* / Q000473:pathology; D004075:Diglycerides / Q000378:metabolism; D005230:Fatty Acids, Nonesterified / Q000097:blood; D007328:Insulin / Q000097:blood; D050356:Lipid Metabolism; D008297:Male; D009929:Organ Size; D051381:Rats; D017208:Rats, Wistar; D012469:Salivary Glands / Q000378:metabolism* / Q000473:pathology
chemical_list: D001786:Blood Glucose; D004075:Diglycerides; D005230:Fatty Acids, Nonesterified; D007328:Insulin
keywords: Diabetes; Diacylglycerols; Free fatty acids; Phospholipids; Salivary glands; Triacylglycerols