Oral administration of sodium fluoride (NaF, 6 and 12 mg/kg body weight/day) to Swiss strain male albino mice for 30 days caused significant dose-dependant reduction in the content of acidic, basic, neutral, and total protein in cerebral hemisphere, cerebellum and medulla oblongata region of brain. After 30 days of NaF treatment, followed by withdrawal of treatment for 30 days, partial but sign...

Standard cytochemical methods were used to investigate the ameliorative effect of melatonin (0.2 mM) on chromosomal aberrations in human lymphocyte cultures induced by arsenic (As2O3, 1.4 μM) and/or fluoride (NaF, 34 μM). As2O3 and/or NaF generated a significant increase in the incidence of chromosomal aberrations as compared to control levels. Combined treatment with As2O3 and NaF induced more...

The effect of sodium fluoride (NaF) on the incorporation of [2-14C] thymidine into DNA in germinating mung bean (Vigna radiate cv Uthong-1) seedlings was studied. One-day-old mung bean seedlings were treated with water (control) or 1.0 mM NaF containing [2-14C]thymidine for 24 h and the thymidine incorporation into various parts of the radicle was examined. Silver grains shown by the autoradiog...

mold powders in continuous casting of steel contain fluorine through mainly caf2 and occasionally naf andna3alf6. fluorine develops dangerous gases such as sif4 and hf at high temperatures. in this study, caf2 is partly replaced by substances such as na2co3, zno and fe2o3.sulfur free portland cement clinker containing gypsum was used as a new product base. these additions developed comparable v...

This study aimed to explore the effect of fluoridated toothpastes on biofilm architecture and enamel demineralization in an in vitro biofilm model. Streptococcus mutans was grown on enamel and treated with slurries of commercial toothpastes, containing SnF2 or NaF. Water and chlorhexidine were used as negative and positive controls, respectively. The developed biofilms were imaged and enamel de...

Distribution of lactate dehydrogenase (LDH) and succinic dehydrogenase (SDH) in the ovary of mice treated with two chronic doses of sodium fluoride (NaF), for five days, in drinking water. LDH histochemical reactivity was observed following Hess et al., (1958) technique and SDH histochemical reactivity was obtained using the method of Nachlas et al., (1957). A decreasing trend of enzyme reactiv...

Human toxicity NaF and ionic fluoride, later only fluoride (1 mg of NaF corresponds to 0.45 mg of fluoride, also called “fluor”) are toxic for humans at the higher doses; gastrointestinal symptoms have occurred following fluoride ingestion from 3 to 5 mg/kg of body weight. The lethal doses of NaF in adults range from 70 to 140 mg/kg, which corresponds to 31.5-63 mg fluoride/kg of body weight [2...

Extracranial metastases from glioblastoma multiforme (GBM) are rare. We report a case of osseous metastases from GBM diagnosed by F-NaF PET/CT. A 30-year-old man with a history of GBM presented with bone pain and underwent F-NaF PET/CT for further evaluation. On PET/CT, intense uptake in 2 bone lesions was noted. Histopathologic evaluation revealed osseous metastases from GBM. Although rare, bo...

Our aim was to prospectively evaluate the relationship between low back pain-related disability and quantitative measures from [18F]-sodium fluoride ([18F]-NaF) MR imaging. Six patients with facetogenic low back pain underwent dynamic [18F]-NaF PET/MR imaging. PET metrics were correlated with clinical measures and MR imaging grading of lumbar facet arthropathy. A significant positive correlatio...

The traditional presentation of Kowalski's Event Calculus as a logic program uses Negation-as-Failure (NAF) in an essential way to support persistence of uents. In this paper we present an implementation of Event Calculus as a purely logical (without NAF) Linear Logic (LL) program. This work demonstrates some of the internal non-monotonic features of LL and its suitability for knowledge update ...