scholarly journals Cytotoxicity of alginate for orthodontic use

2012 ◽  
Vol 17 (6) ◽  
pp. 21e1-21e5 ◽  
Author(s):  
Matheus Melo Pithon ◽  
Rogério Lacerda dos Santos ◽  
Fernanda Otaviano Martins ◽  
Maria Teresa Villela Romanos
Keyword(s):  
Direct Contact ◽  
Tween 80 ◽  
Viable Cell ◽  
Neutral Red ◽  
Positive Control ◽  
Negative Control ◽  
Control Groups ◽  
Minimum Essential Medium ◽  
Impression Materials ◽  
Red Dye

OBJECTIVE: To evaluate the cytotoxicity of three different alginate impression materials for orthodontic use. METHODS: Three different brands of alginate were divided into three groups, namely, Group JCO (Jeltrate Chromatic Ortho), OP (Orthoprint) and CO (Cavex Orthotrace). Three control groups were also included: Group C+ (positive control), consisting of detergent Tween 80; Group C- (negative control), consisting of PBS, and Group CC (cell control), consisting of cells not exposed to any material. After manipulating the materials according to the respective manufacturer instructions, samples were made with the use of silicon rings. Then the samples were immersed in Eagle's minimum essential medium (MEM) for 2 minutes. The supernatants were then removed and brought into direct contact with L929 fibroblasts. After exposure to the medium, the cells were incubated for 24 hours. Then 100 µl of 0.01% neutral red dye were added. The cells were incubated again for 3 hours so that the dye could be absorbed. After this 3-hour period, the cells were fixed to perform the viable cell count, using a spectrophotometer (BioTek, Winooski, Vermont, USA) at a wavelength of 492 nm. RESULTS: Statistical differences were found when Groups CC and C- were compared with the other experimental groups. Group JCO had the highest cytotoxicity, followed by Groups OP and CO. CONCLUSION: Based on the results obtained in this work, it was concluded that all alginate impression materials are potentially cytotoxic.

scholarly journals Evaluation of Antiinflammatory Activity of Marine Omega-3 in Rats

2020 ◽  
Vol 2 (2) ◽  
pp. 1-5
Author(s):  
Ana Khusnul Faizah ◽  
Angelica Kresnamurti
Keyword(s):  
Tween 80 ◽  
Positive Control ◽  
Negative Control ◽  
Dependent Manner ◽  
Omega 3 ◽  
Paw Edema ◽  
Control Groups ◽  
Anti Inflammatory ◽  
Dose Dependent ◽  
Inflammatory Effect

Marine omega-3 from fish contains high EPA dan DHA which may have an analgesic and anti-inflammatory effects. The objective of study is to analyze the anti-inflammatory effect of marine omega-3 in rats. The method of this study is pre-post control experimental. The acute anti-inflammatory effect of marine omega-3 were investigated through carrageenan induced paw edema in rats. Thirty minutes before the procedure, the experimental groups were treated with fish oil 40 and 60 mg/kg; sodium diclofenac (5 mg/kg) as positive control groups and span 80-tween 80 as negative control groups. The degree of paw edema was measured by caliper. The marine omega-3 showed anti-inflammatory effect in a dose-dependent manner. The results of 60 mg/kg of marine omega-3 was significantly different compared with the negative. Overall, the marine omega-3 has acute anti-inflammatory activity in rats.

scholarly journals Antihyperglycemic activity of Centella asiatica (L.) Urb. leaf ethanol extract SNEDDS in zebrafish (Danio rerio)

2021 ◽  
Vol 19 (1) ◽  
pp. 184-188
Author(s):  
Farida Hayati ◽  
Lutfi Chabib ◽  
Faiza Dea Sekarraras ◽  
Wan Syarifah Faizah
Keyword(s):  
Glucose Solution ◽  
Fasting Blood Glucose ◽  
Centella Asiatica ◽  
Ethanol Extract ◽  
Tween 80 ◽  
Positive Control ◽  
Negative Control ◽  
Antidiabetic Activity ◽  
Peg 400 ◽  
Good Preparation

Abstract This study aimed to identify the effectiveness of SNEDDS of Pegagan Leaf Ethanol Extract (PLE) to reduce fasting blood glucose (FBG) levels in zebrafish. Centella asiatica (L.) Urb. or pegagan is among the medicinal plants widely used to treat diabetes in Indonesia. Maceration was employed with 70% ethanol to obtain a viscous extract for the formulation of SNEDDS with Capryol 90, Tween 80, and PEG 400 (1:6:3). Antihyperglycemic testing was conducted on five groups, consisting of normal, positive control, negative control, P I treatment, and P II treatment. On Day 1, all except the normal group was induced with 300 mg alloxan and soaked in 2% glucose solution for 7 days. On day 8, the treatment consisted of 25 mg/2 L metformin for the positive control, 100 mg/2 L SNEDDS for P I, 200 mg/2 L SNEDDS for P II, and no treatment for the negative control. The SNEDDS characterization obtained 100.6 ± 3.12 nm particle size and −7.93 ± 0.66 mV zeta potential, indicating that the SNEDDS had fulfilled the requirements of good preparation. The antidiabetic activity test found a 69.90% decline in FBG levels in 100 mg/2 L SNEDDS and 72.20% in 200 mg/2 L SNEDDS.

scholarly journals Pengaruh Pemberian Ekstrak Teripang Pasir terhadap Hambatan Pertumbuhan Shigella Dysentriae Secara In Vitro

2020 ◽  
Vol 18 (1) ◽  
pp. 47
Author(s):  
FERIZAL NEGERI SAMUDRA ◽  
RETNO BUDIARTI ◽  
IRMAWATI IRMAWATI
Keyword(s):  
Sea Cucumber ◽  
Antibacterial Effect ◽  
Positive Control ◽  
Negative Control ◽  
Shigella Dysenteriae ◽  
Control Group ◽  
Control Groups ◽  
Shigella Spp ◽  
Diarrhea Disease

<p><strong>ABSTRACT</strong></p><p><strong>Background</strong>; In Indonesia, most diarrhea disease in 1995 to 2001 are caused by Shigella spp. Shigella spp infection can cause various symptom dan complication. Generally, the treatment by using antibiotic can cause antibiotic resistance. Sea cucumber (Holoturia scabra) is an herb that known, available, and easy to consume by society and has an antibacterial effect. Therefore, further research to study the effect of Holoturia Scabra on <em>Shigella Dysentriae</em> growth in vitro is needed.</p><p><strong>Objectives</strong>: The goal of this research is demonstrate the effect of sea cucumber (Holoturia scabra) to the growth of the <em>Shigella dysentriae</em> bacteria in vitro.</p><p><strong>Method</strong>: The method in this research is Posttest Only Control Group. There are 6 groups, 4 types of and 2 control groups. The concentration of the treatment group is 100%,50%, 25%, and, 12.5% while for positive control tests using chloramphenicol and aquadest as a negative control.</p><p><strong>Result</strong>: The result showed there is an influence on the intake of sand cucumber to the growth of the Shigella dysenteriae.</p><p><strong>Conclusion</strong>: Sea cucumber (<em>Holoturia scabra</em>) inhibit the growth of <em>Shigella dysenteriae</em>.</p><p><strong>Key words</strong>: <em>Shigella dysenteriae</em>, sea cucumber (<em>Holoturia scabra</em>), antibacterial</p>

Effect of Different Intermediary Bases on Microleakage of a Restorative Material in Class II Box Cavities of Primary Teeth

2017 ◽  
Vol 40 (2) ◽  
pp. 82-87 ◽  
Author(s):  
Faika Y. Abdelmegid ◽  
Fouad S. Salama ◽  
Waleed M. Al-Mutairi ◽  
Saud K. Al-Mutairi ◽  
Sultan O. Baghazal
Keyword(s):  
Primary Teeth ◽  
In Vitro Study ◽  
Class Ii ◽  
Positive Control ◽  
Negative Control ◽  
The Other ◽  
Control Groups ◽  
Significant Difference ◽  
The Mean

Introduction The aim of this in vitro study was to assess and compare the effect of different intermediary bases on microleakage between tooth and a nanocomposite interface in Class II box cavities in primary teeth. Methods Standard Class II box cavities were prepared in 52 primary molars and randomly divided into 9 groups according to the intermediary base used (Multicore Flow, Fuji II LC, SDR, Smart Dentin Replacement, and Biodentine). All specimens were subjected to thermocycling and prepared for microleakage testing and evaluation. Results There was significant difference in the mean ranks of microleakage between the 9 groups, which was observed in the gingival side (p<0.0001) and the occlusal side (p<0.0001). The mean ranks microleakage was significantly higher with experimental SDR, experimental Multicore Flow, and positive control materials when compared with the other 6 groups. The microleakage mean ranks were statistically significantly lower in experimental Fuji II LC, experimental Biodentine, and all negative control groups when compared with the other 3 groups. Conclusions Microleakage is affected by the application of intermediate material. Experimental Biodentine and Fuji II LC showed the lowest microleakage while experimental SDR and experimental Multicore Flow showed the highest microleakage.

2 EVIDENCE FOR THE PRESENCE OF OVULATION-INDUCING FACTOR IN PORCINE AND EQUINE SEMINAL PLASMA

2009 ◽  
Vol 21 (1) ◽  
pp. 101 ◽  
Author(s):  
O. A. Bogle ◽  
D. Ambati ◽  
R. P. Davis ◽  
G. P. Adams
Keyword(s):  
Seminal Plasma ◽  
Optimal Dose ◽  
Positive Control ◽  
Negative Control ◽  
Response To Treatment ◽  
Preovulatory Follicle ◽  
Progesterone Concentration ◽  
Control Groups ◽  
Plasma Progesterone ◽  
Blood Samples

The presence of an ovulation-inducing factor (OIF) in the seminal plasma of llamas and alpacas (reflex ovulators) and cattle (spontaneous ovulators) has been reported previously (Ratto MH et al. 2006 Theriogenology 66, 1102–1106). The presence of this protein in unrelated species supports the hypothesis that OIF is a conserved factor among species. The objectives of this study were to determine if OIF was present in equine and porcine seminal plasma, and whether the proportion of test animals (llamas) that ovulated in response to treatment with seminal plasma was related to dose. In Experiment 1, female llamas were assigned randomly to four groups (n = 8 or 9 per group) and treated intramuscularly with 1 mL llama seminal plasma (positive control), 3 mL equine seminal plasma, 3 mL porcine seminal plasma, or 2 mL saline (negative control). Ovulation and maximum corpus luteum diameter were compared using ultrasonography and confirmed with blood samples taken on Day 7 (Day 0 = day of treatment) to determine plasma progesterone concentration. The diameter of the preovulatory follicle at the time of treatment did not differ among groups. Equine seminal plasma induced ovulations in 3/8 (38%) llamas compared to 0/8 (0%) llamas treated with saline or porcine seminal plasma (P = 0.1). The proportion of females that ovulated was lower in the equine group (P < 0.01) compared with those animals treated with llama seminal plasma (9/9; 100%). Of the animals that ovulated, maximum CL diameter did not differ between llama and equine seminal plasma-treated groups (mean ± SEM; 11.1 ± 1.1, 11.5 ± 1.5, respectively). Similarly, progesterone concentrations were not different among llamas treated with llama seminal plasma or equine seminal plasma (mean ± SEM; 3.1 ± 0.4, 3.7 ± 1.2, respectively). The design of Experiment 2 was the same, but the dose of equine and porcine seminal plasma was increased to 8 mL and 10 mL, respectively. The proportion of females that ovulated was less (P < 0.05) in equine (2/9) and porcine (3/9) seminal plasma groups compared with the group treated with llama seminal plasma (9/9). There were no ovulations detected in llamas treated with saline (0/8). Although differences between equine, porcine, and negative control groups did not reach significance, results provide some evidence for the presence of OIF in equine and porcine seminal plasma. The effect of dose of equine and porcine seminal plasma is equivocal, suggesting that the concentration of OIF in the seminal plasma of these species may be very low and the optimal dose for inducing ovulation in test animals had not been reached. Research supported by the Natural Sciences and Engineering Council of Canada.

scholarly journals Histopathological Profile of Therapeutic Doses of Mango Mistletoe Methanolic Extract (MMME) in Cardiac of Hypertensive Rats (DOCA-Salt)

JSMARTech ◽  
2021 ◽  
Vol 2 (2) ◽  
pp. 048-054
Author(s):  
Annisatul Hakimah ◽  
◽  
Nour Sjakoer ◽  
Nurul Mubarakati ◽  
◽  
...  
Keyword(s):  
Methanolic Extract ◽  
Muscle Cells ◽  
Positive Control ◽  
Negative Control ◽  
P Value ◽  
Hypertensive Rats ◽  
Control Groups ◽  
Significant Difference ◽  
Heart Muscle Cells ◽  
And Control

This study determined the effect of Mango mistletoe Methanolic Extract (MMME) on the cardiac's histopathological profile of hypertensive rats (DOCA-Salt) treated. The MMME was treated on fifty rats for 14 days, divided into five treatments: negative control, positive control, doses 50, 100, and 200 mg/kg BW with five replications. One-way ANOVA analysis was used, namely JAMOVI with version 1.1.9.0, and for cell calculation, diameter using the IMAGE J application. Results showed that there were no significant differences in the histopathological profile of the cardiac in hypertensive rats (DOCA-Salt) treated with MMME for 14 days on the diameter of the heart muscle cells between the control (+) and control groups (-), treatments 1, 2, and 3. This is evidenced by the analysis of p-value> 0.05, namely 0.187 millimeters. Therefore, we concluded that MMME does not affect the diameter of heart/cardiac organ muscle cells. However, there was a significant difference in the amount of necrosis in the cardiac of hypertensive rats between control (+) and control (-) groups, treatments 1, 2, and 3. Based on the results, MMME reduces the number of necrosis in the heart/cardiac organ.

Study of the Effects of L-tryptophane Nanoparticles on Motor Behavior in Alzheimer's Experimental Models

2019 ◽  
Vol 18 (1) ◽  
pp. 44-51 ◽  
Author(s):  
Andressa L. Miri ◽  
Andressa P. Hosni ◽  
Jossinelma C. Gomes ◽  
Rubiana M. Mainardes ◽  
Najeh M. Khalil ◽  
...  
Keyword(s):  
Motor Behavior ◽  
Senile Plaques ◽  
Well Being ◽  
Positive Control ◽  
Negative Control ◽  
Experimental Models ◽  
Control Groups ◽  
Behavioral Reactions ◽  
Post Surgery ◽  
Physiological Alterations

Background: Alzheimer's disease (AD) is a neurodegenerative disease characterized by the progressive and incapacitating decay of cognitive, neuropsychiatric, and behavioral manifestations. L-tryptophan is the precursor amino acid of serotonin, which is a neurotransmitter responsible for mood balance and the sense of well-being and can be administered in the form of nanoparticles. Objective: This study analyzed the effectiveness of L-tryptophan nanoparticles and L-tryptophan on behavioral physiological alterations resulting from AD in animal models. Methods: The sample consisted of 50 Rattus norvegicus rats, divided in 10 groups with 5 animals each: one negative control (NC), three positive control groups (C3, C7, and C21), three groups treated with L-tryptophan nanoparticles (T3N, T7N, and T21N) at the concentration of 1.5 mg, and three groups treated with L-tryptophan (T3L, T7L, and T21L) at the concentration of 1.5 mg. The rats underwent stereotactic surgery to induce AD through the injection of amyloid beta-amyloid peptide1-42 in the intracerebroventricular region. All rats were submitted to pre- and post-surgery and post-treatment motor behavior evaluation through the Later Water Maze (LWM) and elevated cross-labyrinth (ECL). Histological analysis was performed to verify the presence of senile plaques, and the statistical analysis used the unpaired T-test. Results: Significant intergroup differences were observed in some of the evaluated parameters between treated and untreated groups. Conclusion: It was concluded that the treatment with L-tryptophan nanoparticles was beneficial to improve behavioral reactions in the Alzheimer's model.

Delayed onset of paralysis and slowed tumor growth following in situ placement of recombinant human bone morphogenetic protein 2 within spine tumors in a rat model of metastatic breast cancer

2012 ◽  
Vol 16 (4) ◽  
pp. 365-372 ◽  
Author(s):  
Camilo A. Molina ◽  
Rachel Sarabia-Estrada ◽  
Ziya L. Gokaslan ◽  
Timothy F. Witham ◽  
Ali Bydon ◽  
...  
Keyword(s):  
Tumor Growth ◽  
Positive Control ◽  
Negative Control ◽  
Control Groups ◽  
Spine Tumor ◽  
Experimental Animals ◽  
Bovine Collagen ◽  
Group 2 ◽  
Recombinant Human Bone ◽  
Group 1

ObjectRecombinant human bone morphogenetic proteins (rhBMPs) are FDA-approved for specific spinal fusion procedures, but their use is contraindicated in spine tumor resection beds because of an unclear interaction between tumor tissue and such growth factors. Interestingly, a number of studies have suggested that BMPs may slow the growth of adenocarcinomas in vitro, and these lesions represent the majority of bony spine tumors. In this study, the authors hypothesized that rhBMP-2 placed in an intraosseous spine tumor in the rat could suppress tumor and delay the onset of paresis in such animals.MethodsTwenty-six female nude athymic rats were randomized into an experimental group (Group 1) or a positive control group (Group 2). Group 1 (tumor + 15 μg rhBMP-2 sponge,13 rats) underwent transperitoneal exposure and implantation of breast adenocarcinoma (CRL-1666) into the L-6 spine segment, followed by the implantation of a bovine collagen sponge impregnated with 15 μg of rhBMP-2. Group 2 (tumor + 0.9% NaCl sponge, 13 rats) underwent transperitoneal exposure and tumor implantation in the lumbar spine but no local treatment with rhBMP-2. An additional 8 animals were randomized into 2 negative control groups (Groups 3 and 4). Group 3 (15 μg rhBMP-2 sponge, 4 rats) and Group 4 (0.9% NaCl sponge, 4 rats) underwent transperitoneal exposure of the lumbar spine along with the implantation of rhBMP-2– and saline-impregnated bovine collagen sponges, respectively. Neither of the negative control groups was implanted with tumor. The Basso-Beattie-Bresnahan (BBB) scale was used to monitor daily motor function regression and the time to paresis (BBB score ≤ 7).ResultsIn comparison with the positive control animals (Group 2), the experimental animals (Group 1) had statistically significant longer mean (25.8 ± 12.2 vs 13 ± 1.4 days, p ≤ 0.001) and median (20 vs 13 days) times to paresis. In addition, the median survival time was significantly longer in the experimental animals (20 vs 13.5 days, p ≤ 0.0001). Histopathological analysis demonstrated bone growth and tumor inhibition in the experimental animals, whereas bone destruction and cord compression were observed in the positive control animals. Neither of the negative control groups (Groups 3 and 4) demonstrated any evidence of neurological deterioration, morbidity, or cord compromise on either gross or histological analysis.ConclusionsThis study shows that the local administration of rhBMP-2 (15 μg, 10 μl of 1.5-mg/ml solution) in a rat spine tumor model of breast cancer not only fails to stimulate local tumor growth, but also decreases local tumor growth and delays the onset of paresis in rats. This preclinical experiment is the first to show that the local placement of rhBMP-2 in a spine tumor bed may slow tumor progression and delay associated neurological decline.

scholarly journals Tamarindus indica Ameliorates Neural Aluminum Chloride Toxicity in Neonatal Wistar rats

2021 ◽  
Author(s):  
IBE MICHAEL USMAN ◽  
Sunday Abraham Musa ◽  
Ibrahim Abdullahi Iliya ◽  
Eric Osamu Aigbogun ◽  
Keneth Iceland Kasozi ◽  
...  
Keyword(s):  
Positive Control ◽  
Negative Control ◽  
Tamarindus Indica ◽  
Neonatal Rats ◽  
Control Groups ◽  
Treatment Groups ◽  
Copper Zinc ◽  
Group 5 ◽  
Main Components ◽  
Iron And Calcium

Abstract Objective:This was to determine levels of heavy metal expression following Tamarindus indica activity in neonatal rats. Pregnant timed rats were divided into 5 groups (n =4) and neonatal rats were used. Group 1 (negative control), Groups II-V were experimental groups treated with 100 mg/kg of AlCl3 s/c. Group II (positive control), Groups III and IV receiving 400mg/kg and 800mg/kg of Tamarindus indica respectively, and Group 5 receiving 30mg/kg of Vitamin E (comparative control) for 3 weeks. Brain metal; copper, zinc, iron, and calcium (Cu, Zn, Fe, and Ca respectively) quantification was done using atomic absorption spectrophotometer. Results:Tamarindus indica contained 61.6% Oleic Acid, n-Hexadecanoic acid 11.03%, Phenol, 3,5-bis (1,1-dimethyl ethyl)- 8.48 %, and cis-9-Hexadecenal 7.79% as the main components in Tamarindus indica. The differential expression of brain metals in the treatment groups on post gestation day 7 and 21 revealed significantly high mean Zn, Fe, and Cu and lower Ca expression in the positive control compared to the negative control; but significantly lower mean Zn, Fe, and Cu and higher Ca expression was observed in the group treated with 400 and 800mg/kg bw of EATI and comparative control when compared to values observed in positive control.

scholarly journals The Effect of Administering Extract of Java Plum Ethanol (Syzygium Cumini) to the Expression of the Molecular Adhesion 1 (Icam-1) on the Model of Huvecs Preeclampsia

2020 ◽  
Vol 4 (1) ◽  
pp. 175-180
Author(s):  
Siswi Wulandari ◽  
Rahma Kusuma Dewi ◽  
Supraptinigsih Supraptinigsih
Keyword(s):  
Statistical Analysis ◽  
Positive Control ◽  
Negative Control ◽  
Control Group ◽  
Syzygium Cumini ◽  
Meaningful Difference ◽  
Dosage Group ◽  
Control Groups ◽  
Molecular Adhesion ◽  
Regression Test

Introduction: Preeclampsia is one of the causes of maternal mortality. In preeclampsia, endothelial dysfunction triggers the emergence of inflammatory cytokines and increases the expression of the molecular adhesion of ICAM-1. Inflammation of the preeclampsia can be controlled with the administration of anthocyanins. Java plum (Syzygium Cumini) contains anthocyanins that serve as antioxidants and anti-inflammatory. Purpose: This research aims to prove the influence of the administration of java plum (Syzygium Cumini) extracts on the expression of ICAM-1 on the model of HUVECs preeclampsia. Method: The research is conducted experimentally. It is done within the glass in a laboratory with two control groups namely negative control, three positive control, and six experimental groups (100ppm dose, 200ppm and 400ppm, incubation 1 hour, 3 hours, and 24 hours). HUVECs preeclampsia as a model of HUVECs preeclampsia within the glass. The ICAM-1 expression is used in the immunohistochemistry. The statistical analysis uses Two Way Anova test and regression test. Result: at the time of incubation of 1 hour, 3 hours, and 24 hours, there is no meaningful difference in the expression ICAM-1 (p = 0.392 > ∝). At the dose ICAM-1 of java plum, there is a meaningful difference between the positive control group with the dosage group of (p = 0.000 < ∝). Conclusion: An expression of ICAM-1 increases in preeclampsia conditions, administering java plum at a dose of 100 ppm, 200 ppm, and 400 ppm may decrease the expression of ICAM-1 in preeclampsia condition.

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