Oral health knowledge, attitude, and performance of teachers and healthcare workers in special schools for the disabled children in Isfahan.

Oral health is an important aspect of general health, and is of great importance, especially in disabled children. A school is an ideal place for the implementation of preventive programs. Considering the significance of the prevention of dental caries and periodontal disease in disabled children, and the important role of teachers in the oral health promotion of students, this study aimed to assess the oral health knowledge, attitude, and performance of teachers and healthcare workers in special schools for the disabled children in Isfahan. This descriptive-analytical study evaluated the oral health knowledge, attitude, and performance of 172 teachers and healthcare workers of special schools for disabled children in Isfahan using a questionnaire. The participants were selected using census sampling. Quantitative and qualitative data were analyzed using SPSS via the Chi-square test, t-test, and Pearson's correlation coefficient at P < 0.05 level of significance. The mean score of knowledge and attitude of teachers was 72.2% and 80.5%, respectively. The mean score of knowledge of healthcare workers was significantly higher than that of teachers (P = 0.007). Age had no significant correlation with the knowledge score (P = 0.41) but was significantly correlated with the attitude score (P = 0.01). Work experience had a significant correlation with the knowledge (P = 0.02) and attitude (P = 0.005) scores. In addition, the educational level had a significant correlation with the knowledge (P < 0.001) and attitude (P = 0.007) scores. The findings of this research showed that work experience had a significant correlation with the knowledge and attitude scores, which can be due to more contact of teachers with longer work experience with disabled children and their higher perception of hygienic needs and problems of these children.

Phycocyanin as a nature-inspired antidiabetic agent: A systematic review.

BACKGROUND: Nutraceuticals have been important for more than two decades for their safety, efficacy, and outstanding effects. Diabetes is a major metabolic syndrome, which may be improved using nutritional pharmaceuticals. Some microalgae species, such as spirulina, stand out by providing biomass with exceptional nutritional properties. Spirulina has a wide range of pharmacological effects, mostly related to phycocyanin. Phycocyanin is a protein compound with antidiabetic properties, known as a nutraceutical. OBJECTIVE: This review delves into phycocyanin applications in diabetes and its complications and ascertains the mechanisms involved. METHODS: Scopus, PubMed, Cochrane Library, Web of Science, and ProQuest databases were systematically reviewed (up to April 30, 2023), in which only animal and cellular studies were found. RESULTS: According to animal studies, the administration of phycocyanin affected biochemical parameters (primary outcome) related to diabetes. These results showed an increase in fasting insulin serum and a decrease in fasting blood glucose, glycosylated serum protein, and glycosylated hemoglobin. In cellular studies, though, phycocyanin prevented methylglyoxal and human islet amyloid polypeptide-induced dysfunction in ß-cells and induced apoptosis through different molecular pathways (secondary outcome), including activation of Nrf2, PI3K/Akt, and suppression of JNK and p38. Also, phycocyanin exerted its antidiabetic effect by affecting the pathways regulating hepatic glucose metabolism. CONCLUSIONS: Thus, based on the available information and literature, targeting these pathways by phycocyanin may unleash an array of benefits, including positive outcomes of the antidiabetic effects of phycocyanin as a nutraceutical. OTHER: This systematic review was registered in the International Prospective Register of Systematic Reviews (PROSPERO) at the National Institute of Health. The registration number is CRD42022307522.

Isfahan general dentist's awareness, attitude, and performance regarding prescription of new caries prevention materials containing calcium and fluoride components.

BACKGROUND: Fluoride Ion can cause remineralization of primary caries lesions in the presence of calcium and phosphate. New compounds of calcium-containing casein phosphopeptides-amorphous calcium phosphate (CPP-ACP), make the remineralization more effective. This research has been done to evaluate the awareness, attitude, and performance of Isfahan general dentists regarding the prescription of new caries prevention materials containing calcium and fluoride components. MATERIALS AND METHODS: This cross-sectional-descriptive-analytic study has been conducted on 152 general dentists in Isfahan ensuring confidentiality of information and obtaining informed consent. Isfahan general dental offices and clinics were selected using a simple random method. Data of this research were collected using a questionnaire from previous studies. The questions were divided into four sections, including demographic information, awareness, attitude, and performance towards products containing calcium and fluoride prescription. The significance level of P was considered 0.05. Data were analyzed using SPSS version 22, T statistical test, Pearson correlation coefficient, and one-way analysis of variance. RESULTS: The mean score for dentists awareness was 46.3 (standard deviation [SD] = 15.4), the mean score of attitude was 91.4 (SD = 26.1) and the Mean Score of performance was 54.3 (SD = 27.3) (the scores range from 0 to 100). According to the Pearson correlation coefficient, there was no significant relationship between dentists' awareness, attitude besides performance, and their ages together with dentistry work experiences (P > 0.05). CONCLUSION: According to the study results, dentists' awareness of compounds containing CPP-ACP is overall average. However, attending to their positive attitudes toward this context, providing appropriate training programs seem to stimulate them for optimum cooperation as well as using these products for patients.

An insight to the therapeutic potential of algae-derived sulfated polysaccharides and polyunsaturated fatty acids: Focusing on the COVID-19.

Covid-19 pandemic severely affected human health worldwide. The rapidly increasing COVID-19 cases and successive mutations of the virus have made it a major challenge for scientists to find the best and efficient drug/vaccine/strategy to counteract the virus pathogenesis. As a result of research in scientific databases, regulating the immune system and its responses with nutrients and nutritional interventions is the most critical solution to prevent and combat this infection. Also, modulating other organs such as the intestine with these compounds can lead to the vaccines' effectiveness. Marine resources, mainly algae, are rich sources of nutrients and bioactive compounds with known immunomodulatory properties and the gut microbiome regulations. According to the purpose of the review, algae-derived bioactive compounds with immunomodulatory activities, sulfated polysaccharides, and polyunsaturated fatty acids have a good effect on the immune system. In addition, they have probiotic/prebiotic properties in the intestine and modulate the gut microbiomes; therefore, they can increase the effectiveness of vaccines produced. Thus, they with respectable safety, immune regulation, and modulation of microbiota have potential therapeutic against infections, especially COVID-19. They can also be employed as promising candidates for the prevention and treatment of viral infections, such as COVID-19.

Vitamin D3 mediates spatial memory improvement through nitric oxide mechanism in demyelinated hippocampus of rat

Abstract Studies have revealed beneficial role of vitamin D3 in neuro-cognitive function. There is also supporting evidence on the involvement of nitric oxide (NO) in the neuro-protective action. However, its over production could contribute to brain disorders. In this study, demyelination was induced by ethidium bromide (EB) injection into the right side of the hippocampus area of male rats. Vitamin D3 was administered to rats for 7 and 28 days prior to behavioral experiments using Morris water maze (MWM). Travelled distance, time spent to reach the platform, and time spent in target zone, were considered for learning and spatial memory evaluation. Nitrite oxide (NO2-) concentration was measured as an indicator for nitric oxide production. The time spent to reach the platform and the travelled distance were decreased significantly by 28 days of vitamin D3 administration (compared to 7 days experiment). Time spent in target quadrant was significantly lowered by administered vitamin on day 28. Therefore, considering a number of studies that have shown the effect of vitamin D3 on cognition, these findings could support their potential effect. Besides, nitric oxide concentration significantly differed in 28 days of vitamin D3 treated group compared with the groups treated with EB or 7 days of vitamin D3.

Preparation and in vitro release profiling of PLGA microspheres containing BSA as a model protein

Conventional drug formulations are incapable of adequate delivery of proteins and peptides for therapeutic purposes. As these molecules have very short biological half-life, multiple dosing is required to achieve the desirable therapeutic effects. Microspheres are able to encapsulate proteins and peptide in the polymeric matrix while protecting them from enzymatic degradation. In this study Bovine Serum Albumin (BSA) matrix type microspheres were fabricated using Polylactide-co-glycolide (PLGA) by double emulsion solvent evaporation method. The effects of variables such as homogenizer speed, molecular weight of polymer and the effect of pH of the water phases, were investigated against factors such as drug loading, encapsulation efficiency, morphology, size, drug distribution and release profile of the microspheres. Results, suggested that an increase in homogenization speed leads to a decrease in microsphere size. The increase in homogenization speed also caused a significant effect on the release profile only when higher molecular weight of polymer had been used.. The pH change of the internal aqueous phase led to modification of surface morphology of spheres to a porous structure that significantly increased the total amount of released protein. Integrity of protein structure was intact as shown by SDS-PAGE. According to the results, it can be concluded that we achieved a reproducible method regarding controlled protein delivery for different sizes of particles.