Effect of Low-Level Laser Therapy on Peri-Miniscrew Fluid Prostaglandin E2 and Substance P Levels: A Controlled Clinical Trial

Objective: This study aims to evaluate the effect of low-level laser therapy on peri-miniscrew fluid prostaglandin E2 (PGE2) and substance P (SP) levels during orthodontic treatment.Methods: A total of 15 individuals were included in this study. Miniscrews were inserted to the inter-radicular region of the maxillary right and left second premolar and the first molar teeth, and diode lasers were randomly applied to the right or left side. Irradiation was performed at 940 nm wavelength using a gallium-aluminum-arsenide diode laser with 100 mW power output, 0.125 cm2 spectral area, 8 J/cm2 energy density, and 10 seconds of exposure time. Peri-miniscrew fluid samples were collected on the 1st, 3rd, and 7th days, and PGE2 and SP levels were assessed. For statistical comparison, two-way (factors) analysis of variance with repeated measurements on one-factor levels was used at statistical significance (p) of <0.05.Results:PGE2 levels on the 1st, 3rd, and 7th days were 160.64±10.05, 135.17±37.18, and 98.57±22.94, respectively, in the control group and 150.75±9.08, 87.17±40.67, and 78.10±16.50, respectively, in the laser group. SP levels on the 1st, 3rd, and 7th days were 79.90±12.05, 64.61±10.05, and 70.05±9.10, respectively, in the control group and 76.32±11.39, 60.25±9.08, and 65.71±5.59, respectively, in the laser group. The differences in PGE2 and SP levels between the laser and control groups were not statistically significant at all time intervals.Conclusion: Low-level laser therapy cannot be recommended as a clinical adjunct therapy to reduce inflammation and pain around the miniscrews

Investigation of the effect of vitamin c and vitamin e on serum protein fractions in rats with experimental fluorosis

Bu çalışma, deneysel olarak kronik florozis oluşturulan ratlarda vitamin C (vit C) ve E (vit E)'nin serum protein fraksiyonları üzerindeki etkilerini araştırmak amacıyla planlandı. Materyal olarak Wistar-Albino ratlar kullanıldı (Her biri 8 rat içeren, 8 grup). Deneme grupları; kontrol grubu, deneysel florozis grubu, koruma grupları (16 hafta boyunca, içme suyu içeren günlük 150 ppm NaF içeren içme suyu/ad-libitum ile birlikte vit C (100 mg / kg), vit E (300 mg / kg) ve vit C + vit E (100 mg/kg + 300 mg/kg)) ve tedavi grupları (16 hafta boyunca 150 ppm NaF içeren içme suyu/ad-libitum verildikten sonra tedavi amacıyla 4 hafta vit C (100 mg/kg), vit E (300 mg / kg) ve vit C + vit E (100 mg/kg + 300 mg/kg)) olarak oluşturuldu. Deneme sonunda kan örnekleri toplandı ve serumlar alındı. Bu örneklerde serum protein fraksiyonları selüloz-asetat elektroforezi ile belirlendi. Deneysel florozis grubunda total protein yüzde gram açısından, alfa-1’in önemli oranda azaldığı ve beta globülinlerin arttığı tespit edildi. Korunma ve tedavi amacıyla vitamin C, vitamin E ve vitamin C+vitamin E birlikte verildiği gruplarda, değişen bu değerlerin kontrol grubuna yaklaştığı görüldü.The aim of the present study was to investigate the effects of vitamins C (vit C) and E (vit E) on the serum protein fractions in rats with experimentally-induced chronic fluorosis. Wistar-Albino rats (male) were used as material (8 groups, each containing 8 rats). The experimental groups were control, protection groups (daily 150 ppm NaF containing drinking water for 16 weeks as ad-libitum, and, on alternate Vit C (100 mg/kg), Vit E (300 mg/kg) and Vit C+ Vit E (100 mg/kg + 300 mg/kg) for 16 weeks) therapy groups (daily 150 ppm NaF containing drinking water for 16 weeks as ad-libitum, then normal drinking water as ad-libitum, Vit C (100 mg/kg), Vit E (300 mg/kg) and Vit C + Vit E (100 mg/kg + 300 mg/kg) on alternate for 4 weeks). The end of experimental period, blood samples were collected and serums were obtained. Serum protein fractions in blood samples were determined with cellulose-acetate electrophoresis. Alpha-1 was significantly decreased and beta globulins increased in the experimental fluorosis group. In the groups in which vitamin C, vitamin E and combine combination of vitamin C and vitamin E were given for prevention and treatment, it was observed that these changing values approach to the control group

Histopathologic investigation of the protective effects of omega-3 fatty acids against boric acid-induced injury in kidney and testis tissue

Objective: In this study, it was aimed to evaluate the effects of boric acid on rat kidney and testis tissues histopathologically. Secondly, the protective effects of omega-3 fatty acid against boric acid-induced renal and testicular toxicity were investigated. Methods: 32 wistar albino rats were divided into 4 groups as follows: Control, Omega-3 (400 mg/kg/day for 10 days), Boric acid (375 mg/kg/day for 10 days) and Boric acid+omega-3 (both drugs same dosage for same day). Kidney and testis tissues were evaluated using a scoring system based on the extent of certain histopathological changes. Results: In histopathological examination, boric acid caused significant degeneration in both testis and kidney tissues. Most evident findings were glomerular shrinkage and necrosis, hemorrhage and tubular cell degeneration in kidneys, and exfoliation of seminiferous tubule cells, detachement of epithelium from basement membrane, decreased cellularity and degeneration in epithelial cells in testis tissues. Omega-3 administration significantly attenuated these changes. Conclusion: To our literature search, this is the first study reporting protective effects of omega-3 fatty acid against boric-acid-induced testicular and renal injury

The Truth We Cannot See; Hypothermia in Patients Under Spinal Anesthesia

Objective: The frequency of using a temperature monitor in patients under spinal anesthesia is lower than desired. Besides, it is open to debate how and from where temperature monitoring should be done most practically in awake patients. In this study, we investigated the incidence of hypothermia in geriatric patients under spinal anesthesia and compared the temperature measurement methods