The impact of anti-tumor necrosis factor alpha drugs on lipid profile of patients with rheumatoid arthritis or seronegative spondyloarthropathy

Background: Inflammatory arthritis is associated with abnormal levels of lipoprotein. The cause is considered to be inflammation. Recently, the use of biologic drugs in the treatment of inflammatory arthritis, especially rheumatoid arthritis (RA) and seronegative spondyloarthropathy, has increased. There are different results of the effect of these drugs on fat profile. Evaluate the impact of anti-tumor necrosis factor (TNF) alpha drugs on lipid profile of patients with RA or seronegative spondyloarthritis. Methods: In this cross-sectional descriptive study, 50 patients with rheumatoid arthritis or seronegative spondyloarthritis, who were candidates for TNF alpha treatment, were included in the study. After obtaining written consent, a checklist was completed for all patients including demographic information such as age, sex, height, weight, place of residence, level of education, type of disease, and lipid profile test results including total cholesterol, triglycerides (TG), low density lipoprotein (LDL) and high density lipoprotein (HDL) were recorded. Then the patients were treated and evaluated for fat profile after 3, 6, 9 months after receiving the relevant treatment regimen. The test results were recorded in checklists. After completing the study, the data were entered into the statistical package for the social sciences (SPSS) 24 software and analyzed. Results: The mean age of patients was 46.38±14.33 years. 54% of patients were female. 54% of patients had rheumatoid arthritis. 62% of patients were treated with Sinora. The results of this study showed that serum triglyceride levels increased during the study period and this increase was statistically significant but the trend of changes in serum cholesterol, HDL and LDL levels was not statistically significant. However, serum LDL levels measured in the ninth month increased significantly compared to the initial measurement. Conclusions: Results showed that there was a significant relationship between lipid profile changes and anti-TNF alpha consumption. Although decreased inflammation appears but other mechanisms may be involved in dyslipidemia

Fabrication and characterization of polycaprolactone fumarate/gelatin-based nanocomposite incorporated with silicon and magnesium co-doped fluorapatite nanoparticles using electrospinning method

The aim of this study was to fabricate and characterize biodegradable polycaprolactone fumarate(PCLF)/gelatin-based nanocomposite incorporated with the 0, 5 and 10 wt% silicon and magnesium co-doped fluorapatite nanoparticles (Si -Mg-FA) membranes using electrospinning process for guided bone regeneration (GBR) and guided tissue regeneration (GTR) applications. Results demonstrated the formation of randomly-oriented and defect-free fibers with various fiber sizes depending on the Si -Mg-FA content. Moreover, incorporation of 5 wt% Si -Mg-FA significantly improved the mechanical strength (1.5times) compared to the mechanical strength of PCLF/gelatin membrane and nanocomposite with 10 wt% nanoparticles. There was no clear difference between degradation rate of PCLF/gelatin and PCLF/gelatin with 5 wt% nanoparticles at 7, 14 and 28 days of immersion in phosphate buffer saline while 10 wt% nanoparticles significantly increased biodegradation of PCLF/gelatin, and no cytotoxic effect of membranes was seen. Finally, scanning electron microscopy (SEM) micrographs of fibroblast cells cultured on the samples demonstrated that the cells were completely attached and spread on the surface of nanocomposites. In summary, PCLF/gelatin membranes consisting of 5 wt% Si -Mg-FA nanoparticles could provide appropriate mechanical and biological properties and fairly good degradation rate, making it appropriate for GTR/GBR applications

Correction to: Effect of selenium supplementation on antioxidant markers: a systematic review and meta-analysis of randomized controlled trials (Hormones, (2019), 18, 4, (451-462), 10.1007/s42000-019-00143-3)

The original version of this article, published on 10 December 2019 contained a mistake. © 2020, Hellenic Endocrine Society

Assesment of Serum Magnesium Level in Postmenopausal Women With Osteoporosis

Objectives: This study was designed to assess nutritional and biochemical factor of magnesium in postmenopausal osteoporotic women. Methods & Materials: The population of this analytical cross- sectional study, was 60 postmenopausal osteoporotic women ,referred to rheumateology clinic of Tabriz. Nutritional intake was determined by 3 day food recall and food frequency questionnaire، individual and clinical information by questionnaire and weight and height of subjects were measured by scale. Serum magnesium concentration was measured by atomic absorption spectrophotometer. Data were analyzed using analytical and descriptive statistical methods. Results: Mean age of women were 58.85 years old .Mean of energy and protein intake from diet was 1876 kcal, 53.3 g/day,respectively.The mean intake of magnesium from diet was 120 mg/day that was significantly lower than recommended dietary allowance (P<0.05) (37%RDA). Mean of magnesium serum concentration in this patients was 0.7&plusmn;0.01 mmol/L that was in less normal ranges.The correlation between magnesium intake and age was significantly negative. Conclusion: Base on this study finding ,magnesium status in women with postmenopausal osteoporosis was not siutable considering the significant correlation between magnesium intake and bone mineral density and important role of magnesium on bone metabolism, nutritional education to intake magnesium rich foods, is suggested for maintanence of bone density

Efficient Deprotection of Tetrahydropyranyl Ethers by Silica Sulfuric Acid.

305-308Treatment of tetrahydropyranyl (THP) ethers with silica sulfuric acid in methanol provides a simple and efficient process for deprotection of these ethers and the parent alcohols are obtained in excellent yields

Alterations in Intestinal Brush Border Membrane Functionality and Bacterial Populations Following Intra-Amniotic Administration (<i>Gallus gallus</i>) of Catechin and Its Derivatives

Catechin is a flavonoid naturally present in numerous dietary products and fruits (e.g., apples, berries, grape seeds, kiwis, green tea, red wine, etc.) and has previously been shown to be an antioxidant and beneficial for the gut microbiome. To further enhance the health benefits, bioavailability, and stability of catechin, we synthesized and characterized catechin pentaacetate and catechin pentabutanoate as two new ester derivatives of catechin. Catechin and its derivatives were assessed in vivo via intra-amniotic administration (Gallus gallus), with the following treatment groups: (1) non-injected (control); (2) deionized H2O (control); (3) Tween (0.004 mg/mL dose); (4) inulin (50 mg/mL dose); (5) Catechin (6.2 mg/mL dose); (6) Catechin pentaacetate (10 mg/mL dose); and (7) Catechin pentabutanoate (12.8 mg/mL dose). The effects on physiological markers associated with brush border membrane morphology, intestinal bacterial populations, and duodenal gene expression of key proteins were investigated. Compared to the controls, our results demonstrated a significant (p Clostridium genera and E. coli species density with catechin and its synthetic derivative exposure. Furthermore, catechin and its derivatives decreased iron and zinc transporter (Ferroportin and ZnT1, respectively) gene expression in the duodenum compared to the controls. In conclusion, catechin and its synthetic derivatives have the potential to improve intestinal morphology and functionality and positively modulate the microbiome

Efficient deprotection of tetrahydropyranyl ethers by silica sulfuric acid

305-308Treatment of tetrahydropyranyl (THP) ethers with silica sulfuric acid in methanol provides a simple and efficient process for deprotection of these ethers and the parent alcohols are obtained in excellent yields

Alterations in Intestinal Brush Border Membrane Functionality and Bacterial Populations Following Intra-Amniotic Administration (<i>Gallus gallus</i>) of Nicotinamide Riboside and Its Derivatives

Nicotinamide riboside (NR) acts as a nicotinamide adenine dinucleotide (NAD+) precursor where NR supplementation has previously been shown to be beneficial. Thus, we synthesized and characterized nicotinamide riboside tributyrate chloride (NRTBCl, water-soluble) and nicotinamide riboside trioleate chloride (NRTOCl, oil-soluble) as two new ester derivatives of nicotinamide riboside chloride (NRCl). NRCl and its derivatives were assessed in vivo, via intra-amniotic administration (Gallus gallus), with the following treatment groups: (1) non-injected (control); and injection of (2) deionized H2O (control); (3) NRCl (30 mg/mL dose); (4) NRTBCl (30 mg/mL dose); and (5) NRTOCl (30 mg/mL dose). Post-intervention, the effects on physiological markers associated with brush border membrane morphology, intestinal bacterial populations, and duodenal gene expression of key proteins were investigated. Although no significant changes were observed in average body weights, NRTBCl exposure increased average cecum weight. NR treatment significantly increased Clostridium and NRCl treatment resulted in increased populations of Bifidobacterium, Lactobacillus, and E. coli. Duodenal gene expression analysis revealed that NRCl, NRTBCl, and NRTOCl treatments upregulated the expression of ZnT1, MUC2, and IL6 compared to the controls, suggesting alterations in brush border membrane functionality. The administration of NRCl and its derivatives appears to trigger increased expression of brush border membrane digestive proteins, with added effects on the composition and function of cecal microbial populations. Additional research is now warranted to further elucidate the effects on inflammatory biomarkers and observe changes in the specific intestinal bacterial populations post introduction of NR and its derivatives

Synthesis, Stability, and Bioavailability of Nicotinamide Riboside Trioleate Chloride

Nicotinamide riboside chloride (NRCl) is an effective form of vitamin B3. However, it cannot be used in ready-to-drink (RTD) beverages or high-water activity foods because of its intrinsic instability in water. To address this issue, we synthesized nicotinamide riboside trioleate chloride (NRTOCl) as a new hydrophobic nicotinamide riboside (NR) derivative. Contrary to NRCl, NRTOCl is soluble in an oil phase. The results of stability studies showed that NRTOCl was much more stable than NRCl both in water and in oil-in-water emulsions at 25 °C and 35 °C. Finally, we evaluated the bioavailability of NRTOCl by studying its digestibility in simulated intestinal fluid. The results demonstrated that NRTOCl was partially digestible and released NR in the presence of porcine pancreatin in a simulated intestinal fluid. This study showed that NRTOCl has the potential to be used as an NR derivative in ready-to-drink (RTD) beverages and other foods and supplement applications