Ionic and histological studies of salivary glands in rats with diabetes and their glycemic state after laser irradiation.

Photomed Laser Surg

Dental Materials Department, Oral Biology Research Center, School of Dentistry, University of São Paulo, São Paulo, Brazil.

Published: December 2009

AI Article Synopsis

  • The study aimed to assess how laser irradiation influences blood sugar levels and the structural and ionic properties of salivary glands in diabetic rats.
  • Diabetes was induced in 120 female rats, and different laser doses were applied to their salivary glands, leading to notable improvements in blood glucose levels and reduced lipid accumulation post-irradiation.
  • Findings suggest that laser irradiation may serve as a complementary treatment for managing diabetes-related complications by improving metabolic conditions in affected rats.

Article Abstract

Objectives: To evaluate the effect of laser irradiation (LI) on the glycemic state and the histological and ionic parameters of the parotid and submandibular glands in rats with diabetes.

Methods: One hundred twenty female rats were divided into eight groups. Diabetes was induced by administration of streptozotocin and confirmed later according to results of glycemia testing. Twenty-nine days after the induction, the parotid and submandibular glands of the rats were irradiated with 5, 10, and 20 J/cm2 using a laser diode (660 nm/100 mW) (without diabetes: C5, C10, and C20; with diabetes: D5, D10, and D20, respectively). On the following day, the rats were euthanized, and blood glucose determined. Histological and ionic analyses were performed.

Results: Rats with diabetes without irradiation (D0) showed lipid droplets accumulation in the parotid gland, but accumulation decreased after 5, 10, and 20 J/cm2 of laser irradiation. A decrease in fasting glycemia level from 358.97+/-56.70 to 278.33+/-87.98 mg/dL for D5 and from 409.50+/-124.41 to 231.80+/-120.18 mg/dL for D20 (p<0.05) was also observed.

Conclusion: LI should be explored as an auxiliary therapy for control of complications of diabetes because it can alter the carbohydrate and lipid metabolism of rats with diabetes.

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http://dx.doi.org/10.1089/pho.2008.2452DOI Listing

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