scholarly journals Cytotoxicity evaluation of four endodontic sealers

2008 ◽  
Vol 19 (3) ◽  
pp. 228-231 ◽  
Author(s):  
Paulo Tadeu da Silva ◽  
Fernanda Geraldes Pappen ◽  
Erick Miranda Souza ◽  
João Eduardo Dias ◽  
Idomeo Bonetti Filho ◽  
...  
Keyword(s):  
Peritoneal Macrophages ◽  
Positive Control ◽  
Negative Control ◽  
Phenol Red ◽  
Control Medium ◽  
Griess Reaction ◽  
Phosphate Buffered Saline ◽  
Mouse Peritoneal Macrophages ◽  
Endodontic Sealers

This study evaluated in vitro the cytotoxicity of four root canal sealers (Topseal, EndoRez, TubliSeal and Kerr Pulp Canal Sealer E.W.T.) and their effects on reactive oxygen/nitrogen intermediate induction by mouse peritoneal macrophages. Thioglycollate-induced cells were obtained from Swiss mice by peritoneal lavage with 5 mL 10 mM phosphate-buffered saline, washed twice and resuspended (106 cells/mL) in appropriate medium for each test. Cytotoxicity was determined by the presence of hydrogen peroxide (H2O2) and nitric oxide (NO) by the peroxidase-dependent oxidation of phenol red and Griess reaction, respectively. Sealer suspensions were obtained in two different concentrations from each material: 18 mg/mL and 9 mg/mL, established according to compatibility parameters following MTT assay. Comparing the sealers, H2O2 release at concentrations of 9 mg/mL and 18 mg/mL was similar: Topseal > positive control (medium + cells + 5 mg/mL zimozan solution) > EndoRez > TubliSeal > Kerr Pulp E.W.T. > negative control (medium + cells). NO release at concentration of 9 mg/mL was: positive control (medium + cells + 10 µg/mL LPS solution) > Topseal > Kerr Pulp E.W.T. > TubliSeal = EndoRez > negative control (medium + cells); at concentration of 18 mg/mL was: positive control > Topseal > Kerr Pulp E.W.T > TubliSeal > EndoRez > negative control. Based on the results, it may be concluded that Topseal presented the highest cytotoxicity among the tested sealers, releasing higher concentrations of NO and H2O2 in macrophage culture.

scholarly journals IN VITRO EVALUATION OF THE ANTHELMINTIC ACTIVITY OF RHIZOME EXTRACTS OF CURCUMA LONGA (LINN.)

2018 ◽  
Vol 11 (12) ◽  
pp. 425
Author(s):  
Jyoti Pandey ◽  
Suman Mishra ◽  
Kamal Jaiswal
Keyword(s):  
Curcuma Longa ◽  
Anthelmintic Activity ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Phytochemical Analysis ◽  
Alternative Source ◽  
Significant Efficacy ◽  
Phosphate Buffered Saline

Objective: The current study was carried out to evaluate the anthelmintic activity of the rhizome extract of Curcuma longa as an alternative source of effective remedies for nematodiasis.Methods: The anthelmintic activity of the C. longa was assessed in vitro against Haemonchus spp., a gastrointestinal (abomasum) parasite of goats. Different concentrations of the extracts (1 mg/mL, 2.5 mg/mL, 5 mg/mL, and 10 mg/mL) in phosphate-buffered saline (PBS) were tested, and the results expressed in terms of time of paralysis (minute) and time of death (minute) of the worms. Albendazole (1 mg/mL) was used as a reference (positive control) and PBS as a control group (negative control).Results: The qualitative phytochemical analysis of the methanolic extract (ME) of the plant disclosed the presence of alkaloids, glycosides, terpenoids, flavonoids, tannins, saponins, phenol, anthraquinone, and carbohydrates; whereas, the aqueous extract (AE) showed the presence of alkaloids, carbohydrate, flavonoids, and saponins. Both ME and AE of the C. longa (rhizome) expressed significant efficacy (p≤0.05) in causing paralysis as well as the death of the worms within 12 h of exposure at all tested concentrations, as compared to the negative control. The rhizome extracts of C. longa showed dose-dependent efficacy in causing paralysis of the worm motility and the final progression to death. The results showed that the ME at 10 mg/mL was significantly more potent (p≤0.05) over the AE.Conclusions: This study concluded that the rhizome extract of C. longa exhibited potent anthelmintic efficacy against the nematode parasite, Haemonchus spp.

scholarly journals Mahkota Dewa (God’s Crown) Fruit Extract Inhibits the Formation of Periodontal Pathogen Biofilms in vitro

2019 ◽  
Vol 2 (2) ◽  
pp. 57 ◽  
Author(s):  
Diajeng Celia Radita ◽  
Armelia Sari Widyarman
Keyword(s):  
Brain Heart Infusion ◽  
Positive Control ◽  
Negative Control ◽  
Periodontal Pathogen ◽  
Bacterial Strains ◽  
Fruit Extract ◽  
Fruit Extracts ◽  
Level Of Significance ◽  
Phosphate Buffered Saline

Introduction: Mahkota dewa (Phaleria macrocarpa) is an Indonesian fruit that contains antibacterial compounds, such as flavonoids, saponins, and tannins; it has been used as an alternative treatment for controlling infection. Objectives: This study aimed to examine the effect of mahkota dewa fruit extract on the formation of Porphyromonas gingivalis (P. gingivalis), Aggregatibacter actinomycetemcomitans (A. actinomycetemcomitans), and Treponema denticola (T. denticola) biofilms in vitro. Methods: God’s crown fruit was extracted using the maceration technique, and then diluted into different concentrations (25%, 12.5%, 6.25%, 3.125%, and 1.56%) using phosphate buffered saline (PBS). P. gingivalis ATCC-33277, A. actinomycetemcomitans ATCC-29522, or T. denticola ATCC-35405 were cultured in brain heart infusion (BHI) broth, 24h (anaerobic-condition), and then each type of bacteria (108CFU/mL) was distributed into a 96-well microplate to form a biofilm. Subsequently, the fruit extracts were distributed into the biofilm-containing well plates and incubated for 1h, 6h, and 24h. A biofilm without the fruit extract and chlorhexidine-gluconate (0.2%) was used as the negative and positive control, respectively. Crystal violet (0.5%w/v) was used to determine the density of the remaining biofilm using a microplate spectrophotometer (600 nm). Data were statistically analyzed using one-way ANOVA, and p <0.05 was set as the level of significance. Results: The mahkota dewa fruit extracts significantly inhibited the formation of a biofilm for all three bacterial strains at all concentrations and for each incubation time (p <0.05) based on optical density (OD)±SD.  The best concentration of fruit extract to inhibit biofilm formation was 25% for P. gingivalis (OD=0.19±0.06), 12.5% for A. actinomycetemcomitans (OD=0.14 ± 0.16), and 25% for T. denticola (OD=1.17±0.19) in comparison to the biofilm mass of the negative control, which was 1.67±0.06, 1.17±0.34, 2.66±0.38 for P. gingivalis, A. actinomycetemcomitans, and T. denticola, respectively. Conclusion: Based on these results, mahkota dewa fruit extract can inhibit the formation of biofilm on P. gingivalis, A. actinomycetemcomitans, and T. denticola, and it may potentially be used to prevent the infection associated with periodontal disease.

scholarly journals Anthelmintic Activity of Curcuma Aeruginosa Roxb Extract on Fasciola gigantica in Vitro

2020 ◽  
Vol 151 ◽  
pp. 01046
Author(s):  
Henni Vanda ◽  
Rizki Parindra ◽  
Muhammad Hambal ◽  
Farida Athaillah
Keyword(s):  
Methanolic Extract ◽  
Anthelmintic Activity ◽  
Positive Control ◽  
Negative Control ◽  
Fasciola Gigantica ◽  
Histopathological Study ◽  
Randomized Design ◽  
Completely Randomized Design ◽  
Phosphate Buffered Saline

Fasciola gigantica is a parasite that causes a disruption of the metabolism of fats, proteins, and carbohydrates, which interferes growth and causes death. Curcuma aeruginosa Roxb extract is one of the medicinal plants which has been used to treat several diseases. The aim of this study was to determine the effect of methanolic extract of C. aeruginosa Roxb on F. gigantica, including mortality time and histopathological changes that occurred after treatment. This study used a completely randomized design with five replications. The flukes were soaked in three different extract concentrations: 10% (T1), 25% (T2), and 50% (T3) (w/v). Phosphate buffered saline (PBS) solution was used as a negative control (C1) and albendazole as the positive control (C2). The mortality time of F. gigantica in each group was calculated, and the dead flukes were prepared for histopathological study. The data were analyzed by Analysis of variance. The results showed that C. aeruginosa extracts at the concentration of 10, 25 and 50% caused the death of the flukes within 75, 57 and 48 minutes, respectively., Histopathological observations showed that the extract caused breakage of tegument which is an important organ in the respiratory process and nutrient absorption. This study concluded that C. aeruginosa extract exhibited anthelmintic activity towards F. gigantica in vitro.

scholarly journals Histopathological Changes of Egg Cells in the Uterine of Ascaridia galli after Treatment with Extract of Veitchia merrillii Nuts

2017 ◽  
Vol 22 (3) ◽  
pp. 139
Author(s):  
Ummu Balqis ◽  
Muslina Muslina ◽  
Muhammad Hambal ◽  
Farida Athaillah ◽  
Muttaqien Muttaqien ◽  
...  
Keyword(s):  
Ethanolic Extract ◽  
Positive Control ◽  
Negative Control ◽  
Ascaridia Galli ◽  
Histopathological Changes ◽  
Intestinal Nematode ◽  
Reproduction Process ◽  
Group A ◽  
Phosphate Buffered Saline

The aim of the study was to observe the histopathological changes of the entire egg cells in the uterine of Ascaridia galli worms treated with crude ethanolic extract of Veitchia merrillii nuts. Histopathological changes of the entire egg cells were observed to describe that the activity of extract V. merrillii nuts interfered the reproduction process could decrease the quantity and quality of A. galli eggs. The experiments consisted of 16 head A. galli female adult worms divided into four groups, contained four worms of each, and maintained in 0.9% phosphate buffered saline (PBS). First group, a negative control experiment consisted of A. galli in 0.9% PBS. Second group, concentration of 15 mg/mL albendazole was used as a positive control. Third group and fourth group, in vitro exposure of the worms to the crude ethanolic extract V. merrillii nuts at a concentration of 25 mg/mL and 75 mg/mL, respectively. The histopathological changes of egg cells in the uterine region of stained worms was evaluated by light microscopic examination at 40x magnification. The results showed that shrinkage and disintegration of the entire egg cells in the breakage of uterus. The results indicate that the possible use of the plant as a potential anthelmintic against A. galli, the intestinal nematode parasite of domestic fowl.

Effect of Phosphorylated Chitosan on Dentin Erosion: An in vitro Study

2018 ◽  
Vol 52 (5) ◽  
pp. 378-386 ◽  
Author(s):  
Ana Paula C.A. Beltrame ◽  
Dakota Suchyta ◽  
Islam Abd Alraheam ◽  
Anas Mohammed ◽  
Mark Schoenfisch ◽  
...  
Keyword(s):  
Modulus Of Elasticity ◽  
In Vitro Study ◽  
Chitosan Solution ◽  
Dental Erosion ◽  
Positive Control ◽  
Negative Control ◽  
Favorable Effect ◽  
Dentin Surface ◽  
Phosphate Buffered Saline

The aim of this study was to evaluate the antierosive effect of phosphorylated chitosan in dentin. Bovine dentin specimens were randomly distributed into the following groups: (1) no treatment (NoTx/negative control), (2) phosphate-buffered saline solution (PBS), (3) AmF/NaF/SnCl2 (positive control), (4) 0.5% chitosan solution (Chi), (5) 0.5% neutral phosphorylated (NP)-Chi, and (6) 0.5% alkaline phosphorylated (AP)-Chi. The specimens were submitted to de-remineralization treatment cycles for 5 days: 0.5% citric acid (2 min), remineralizing solution (30 min), and surface treatment according to assigned groups (2 min, 6×/day). The loss of dentin surface was measured by profilometry. Hardness and modulus of elasticity were measured using a nanoindenter equipped with a Berkovich diamond tip. The dentin surface was analyzed by scanning electron microscopy (SEM). The largest loss of dentin was observed in the No Tx and PBS groups (approx. 25 µm). The group treated with AmF/NaF/SnCl2 showed less loss of dentin (67% reduction vs. NoTx and PBS), followed by the groups treated with NP-Chi and AP-Chi (33% reduction), and Chi (18% reduction). Nanohardness and modulus of elasticity were similar in the NoTx and PBS groups, with a small increase in stiffness in all other groups. SEM revealed that the experimental solution of AP-Chi had a favorable effect on maintaining the integrity of collagen fibrils. AmF/NaF/SnCl2 showed a preserved mineralized collagen surface. Further studies are warranted to explore this nontoxic phosphorylated chitosan polymer as an effective agent in the prevention and treatment of dental erosion.

Aktivitas Antifungi Air Perasan Bawang Merah (Allium ascalonicum L.) Terhadap Candida albicans Secara In Vitro

2017 ◽  
Vol 9 (2) ◽  
pp. 71
Author(s):  
Nurhasanah Nurhasanah ◽  
Fauzia Andrini ◽  
Yulis Hamidy
Keyword(s):  
Candida Albicans ◽  
Antifungal Activity ◽  
Allium Sativum ◽  
Fungicidal Activity ◽  
Positive Control ◽  
Negative Control ◽  
Randomized Design ◽  
Significant Difference ◽  
Completely Randomized Design

Shallot (Allium ascalonicum L.) has been known as traditional medicine. Shallot which has same genus with garlic(Allium sativum L.) contains allicin that is also found in garlic and has been suspected has fungicidal activity toCandida albicans. It is supported by several researches. Therefore, shallot is suspected has antifungal activity too.The aim of this research was to know antifungal activity of shallot’s water extortion againsts Candida albicans invitro. This was a laboratory experimental research which used completely randomized design, with diffusion method.Shallot’s water extortion was devided into three concentrations, there were 50%, 100% and 200%. Ketoconazole 2%was positive control and aquadest was negative control. The result of this research based on analysis of varians(Anova), there was significant difference between several treatments and was confirmed with Duncan New MultipleRange Test (DNMRT) p<0,05, there was significant difference between 100% shallot’s water extortion with othertreatments, but there was no significant difference between 50% shallot’s water extortion with 200% shallot’s. Theconclusion was shallot’s water extortion had antifungal activity againsts Candida albicans with the best concentration100%, but it was lower than ketoconazole 2%.

scholarly journals Investigation of potential anti-urolithiatic activity from different types of Musa pseudo-stem extracts in inhibition of calcium oxalate crystallization

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Mazni Abu Zarin ◽  
Joo Shun Tan ◽  
Paramasivam Murugan ◽  
Rosma Ahmad
Keyword(s):  
Calcium Oxalate ◽  
Incubation Time ◽  
Positive Control ◽  
Negative Control ◽  
Aggregation Assay ◽  
Banana Tree ◽  
Methanolic Extracts ◽  
Different Types ◽  
Aggregation Activity

Abstract Background The banana or scientifically referred to as Musa sp., is one of the most popular fruits all over the world. Almost all parts of a banana tree, including the fruits, stem juice, and flowers are commonly used as traditional medicine for treating diarrhoea (unripe), menorrhagia, diabetes, dysentery, and antiulcerogenic, hypoglycemic, antilithic, hypolipidemic conditions, plus antioxidant actions, inflammation, pains and even snakebites. The study carried out was to evaluate in vitro anti-urolithiatic activity from different types of Musa pseudo-stems. Methods Observing anti-urolithiathic activity via in vitro nucleation and aggregation assay using a spectrophotometer followed by microscopic observation. A total of 12 methanolic extracts were tested to determine the potential extracts in anti-urolithiasis activities. Cystone was used as a positive control. Results The results manifested an inhibition of nucleation activity (0.11 ± 2.32% to 55.39 ± 1.01%) and an aggregation activity (4.34 ± 0.68% to 58.78 ± 1.81%) at 360 min of incubation time. The highest inhibition percentage in nucleation assay was obtained by the Musa acuminate x balbiciana Colla cv “Awak Legor” methanolic pseudo-stem extract (2D) which was 55.39 ± 1.01%at 60 min of incubation time compared to the cystone at 30.87 ± 0.74%. On the other hand,the Musa acuminate x balbiciana Colla cv “Awak Legor” methanolic bagasse extract (3D) had the highest inhibition percentage in the aggregation assay incubated at 360 min which was obtained at 58.78 ± 1.8%; 5.53% higher than the cystone (53.25%).The microscopic image showed a great reduction in the calcium oxalate (CaOx) crystals formation and the size of crystals in 2D and 3D extracts, respectively, as compared to negative control. Conclusions The results obtained from this study suggest that the extracts are potential sources of alternative medicine for kidney stones disease.

scholarly journals Evaluation of ionic degradation and slot corrosion of metallic brackets by the action of different dentifrices

2013 ◽  
Vol 18 (1) ◽  
pp. 86-93
Author(s):  
Gustavo Antônio Martins Brandão ◽  
Rafael Menezes Simas ◽  
Leandro Moreira de Almeida ◽  
Juliana Melo da Silva ◽  
Marcelo de Castro Meneghim ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Artificial Saliva ◽  
Positive Control ◽  
Negative Control ◽  
Sem Analysis ◽  
Wilcoxon Test ◽  
Surface Polishing ◽  
Aluminium Ion ◽  
Negative Controls

OBJECTIVE: To evaluate the in vitro ionic degradation and slot base corrosion of metallic brackets subjected to brushing with dentifrices, through analysis of chemical composition by Energy Dispersive Spectroscopy (EDS) and qualitative analysis by Scanning Electron Microscopy (SEM). METHODS: Thirty eight brackets were selected and randomly divided into four experimental groups (n = 7). Two groups (n = 5) worked as positive and negative controls. Simulated orthodontic braces were assembled using 0.019 x 0.025-in stainless steel wires and elastomeric rings. The groups were divided according to surface treatment: G1 (Máxima Proteção Anticáries®); G2 (Total 12®); G3 (Sensitive®); G4 (Branqueador®); Positive control (artificial saliva) and Negative control (no treatment). Twenty eight brushing cycles were performed and evaluations were made before (T0) and after (T1) experiment. RESULTS: The Wilcoxon test showed no difference in ionic concentrations of titanium (Ti), chromium (Cr), iron (Fe) and nickel (Ni) between groups. G2 presented significant reduction (p < 0.05) in the concentration of aluminium ion (Al). Groups G3 and G4 presented significant increase (p < 0.05) in the concentration of aluminium ion. The SEM analysis showed increased characteristics indicative of corrosion on groups G2, G3 and G4. CONCLUSION: The EDS analysis revealed that control groups and G1 did not suffer alterations on the chemical composition. G2 presented degradation in the amount of Al ion. G3 and G4 suffered increase in the concentration of Al. The immersion in artificial saliva and the dentifrice Máxima Proteção Anticáries® did not alter the surface polishing. The dentifrices Total 12®, Sensitive® and Branqueador® altered the surface polishing.

In vitro insecticidal effect of commercial fatty acids, ß-sitosterol and rutin against the sugarcane aphid, Melanaphis sacchari Zehntner (Hemiptera: Aphididae)

2022 ◽  
Author(s):  
Liliana Aguilar Marcelino ◽  
Jesús Antonio Pineda Alegría ◽  
David Osvaldo Salinas-Sánchez ◽  
Víctor Manuel Hernández Velázquez ◽  
Gonzalo Iván Silva Aguayo ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Positive Control ◽  
Negative Control ◽  
Tween 20 ◽  
Agricultural Pests ◽  
Melanaphis Sacchari ◽  
Insecticidal Effect ◽  
Sugarcane Aphid ◽  
Alternative Means

The sugarcane aphid, Melanaphis sacchari Zehntner (Hemiptera: Aphididae), is the main pest of sorghum, Sorghum bicolor L. Moench (Poaceae), in Mexico. To control this insect, farmers currently use synthetic chemical insecticides, which are toxic to humans and biodiversity. However, natural products are a promising potential source of safer alternative means to control different agricultural pests. The main objective of this study was to evaluate the insecticidal effect of contact by fumigation of pure molecules of four commercial fatty acids (palmitic, stearic, pentadecanoic and linoleic acids), the phytosterol ß -sitosterol, and the flavonoid rutin. The results showed that fatty acids were the most effective against M. sacchari ; the highest mortality rate (85%) was produced by linoleic acid and the LC 50 was 1,181 ppm, followed by stearic and palmitic acids with mortality percentages of 74 and 63%, respectively, at a concentration of 2,500 ppm at 72 h. The positive control, imidacloprid, had 100% mortality in 24 h and the tween 20 negative control exhibited 4% mortality in 72 h. Our results show that commercial fatty acids are effective against adults of M. sacchari , and can be considered an environmentally friendly alternative to the frequent use of synthetic chemical insecticides.

Sign in / Sign up

Export Citation Format

Share Document