scholarly journals Vine-Shoots as Enological Additives. A Study of Acute Toxicity and Cytotoxicity

Foods ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 1267
Author(s):  
Cristina Cebrián-Tarancón ◽  
Francisco Fernández-Roldán ◽  
Rosario Sánchez-Gómez ◽  
Rosario Salinas ◽  
Silvia Llorens
Keyword(s):  
Acute Toxicity ◽  
Mtt Assay ◽  
Cabernet Sauvignon ◽  
Aqueous Extracts ◽  
Cytotoxic Potential ◽  
Diphenyltetrazolium Bromide ◽  
A Cell ◽  
Herbal Infusions ◽  
Metabolic Reduction ◽  
Mtt Assays

Toasted vine-shoots have been recently proposed as enological additives that can be used to improve the sensorial profile of wines. However, the possible toxicity of this new winery practice has not been studied so far. The aim of this study was to evaluate the toxicity of Tempranillo, Cencibel, and Cabernet Sauvignon toasted vine-shoots when used in winemaking. First, vine-shoots were characterized in terms of minerals and phenolic and furan compounds, and then their acute toxicity and cytotoxicity were studied using Microtox® and the metabolic reduction of 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assays. High EC50 values were obtained when the Microtox® assay was applied to vine-shoot aqueous extracts, similar to the case of herbal infusions. When the MTT assay was used, a cell viability above 70% was observed in all the wines made with those vine-shoots, and an even greater viability was observed in the case of Cabernet Sauvignon. Therefore, it was concluded that those vine-shoots have no cytotoxic potential.

scholarly journals The synergistic interference effect of silica nanoparticles concentration and the wavelength of ELISA on the colorimetric assay of cell toxicity

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fariba Abbasi ◽  
Hassan Hashemi ◽  
Mohammad Reza Samaei ◽  
Amir SavarDashtaki ◽  
Abooalfazl Azhdarpoor ◽  
...  
Keyword(s):  
Mtt Assay ◽  
Interference Effect ◽  
Polynomial Regression ◽  
Colorimetric Assay ◽  
Synergistic Effects ◽  
Cell Toxicity ◽  
Diphenyltetrazolium Bromide ◽  
Nanoparticles Concentration ◽  
Artificial Neural Network Ann ◽  
First Time

AbstractThe 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay is the most common method for the determination of cell toxicity, but some factors limit the sensitivity of this method, such as pH. Less attention had been paid to the interference effect of optical and plasmonic properties of SiO2 nanoparticles (NPs) in the wavelength range assigned to MTT. This study investigated the synergistic interference effect of SiO2 NPs and wavelength on MTT assay for the first time. The examined variables included the type of SiO2 NPs concentrations (1, 10, and 100 mM) and different wavelengths (470, 490, 520, and 570 nm). The results showed that optical density (OD) increased (p < 0.05) when wavelength and the concentration of crystalline SiO2 NPs increased. So, the maximum OD at 10 and 100 mM were attributed to crystalline SiO2 NPs (p < 0.05) due to the functional group, whereas it was related to amorphous at 1 mM (p > 0.05). According to polynomial regression modeling (PRM), the maximum interference effect was predicted at crystalline SiO2 NPs and wavelength > 550 nm. Besides, the synergistic effects of SiO2 NPs, wavelength, and concentration of NPs had been a good fitting with first-order PRM. Thus, the concentration of SiO2 NPs had a confounder factor in colorimetric for MTT assay. The best artificial neural network (ANN) structure was related to the 3:7:1 network (Rall = 0.936, MSE = 0.0006, MAPE = 0.063). The correlation between the actual and predicted data was 0.88. As SiO2 NPs presence is an interfering factor in MTT assay concerning wavelength, it is suggested wavelength use with minimum confounding effect for MTT assay.

Cytotoxicity of an Experimental Light-Cured Orthodontic Adhesive

2019 ◽  
Vol 294 ◽  
pp. 65-70
Author(s):  
Kanin Nimcharoensuk ◽  
Niwat Anuwongnukroh ◽  
Surachai Dechkunakorn ◽  
Vanthana Sattabanasuk ◽  
Panya Sunintaboon ◽  
...  
Keyword(s):  
Cell Viability ◽  
Cytotoxic Effect ◽  
L929 Cell ◽  
Descriptive Statistics ◽  
The Other ◽  
Cytotoxic Potential ◽  
Monomer Ratio ◽  
Diphenyltetrazolium Bromide ◽  
Good Biocompatibility ◽  
L929 Cell Line

The objective of this study was to compare the cytotoxicity of a domestically-made light-cured orthodontic adhesive to a commercial adhesive, Transbond XT (3M Unitek, USA). An in-house orthodontic adhesive composed of a filler 60-70 weight % and a monomer ratio (BisGMA:TEGDMA) of 6:4 with 0.5% of photoinitiator was mixed. The potential cytotoxic effect of this experimental and a control adhesive was assessed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay according to ISO 10993-5: 2009(E). The L929 cell line was grown in 96-well tissue culture plates (1x105 cells/mm3). Thin cured-resin discs of each material weighing 0.4 gram were prepared and incubated for 1, 3, 5, 7, 14, and 30 days in Dulbecco’s modified Eagle medium (DMEM) at 37°C and 95% humidity with 5% CO2. The percentage of cell viability was reported by descriptive statistics. The result showed that the cell viability of the experimental adhesive was higher than Transbond XT in all measured periods. The cytotoxicity of both the adhesives gradually decreased with the progression of time. In conclusion, the in-house adhesive showed a good biocompatibility since the first day following polymerization. On the other hand, Transbond XT started with a cytotoxic potential, then, turned to be non-cytotoxic after 5 days of curing.

scholarly journals Uji Biokompabilitas pada Implan Orthopedi Antara Implan Impor, Implan Lokal dari Material Impor, dan Prototipe Stainless Steel 316L dari Material Lokal

2019 ◽  
Vol 3 (1) ◽  
pp. 7
Author(s):  
Ferdiansyah Mahyudin ◽  
Heppy Chandra Waskita ◽  
Dwikora Novembri Utomo ◽  
Heri Suroto ◽  
Tri Wahyu Martanto
Keyword(s):  
Stainless Steel ◽  
Acute Toxicity ◽  
Mtt Assay ◽  
Orthopedic Implants ◽  
Fibrous Capsule ◽  
Cytotoxicity Test ◽  
Stainless Steel 316L ◽  
Medical Test ◽  
Significant Difference ◽  
One Way Anova

ABSTRACT  Demands of orthopedic implants are increasing in Indonesia, but its production are limited and still imported. Stainless steel, especially 316L is one of metal that is used commonly. This research evaluates biocompatibility of stainless steel 316L implant prototype, local implant manufactured using imported stainless steel, and imported stainless steel implant. Cytotoxicity test used mesenchymal human cell with MTT assay. Irritation test, acute toxicity/pyrogenicity test, and implantation test used 24 Wistar rats respectively which were assigned to 4 groups. We evaluate Draize score, weight and rectal temperature changes, and fibrous capsule ring thickness. Cytotoxicity test shows viable cell percentage in stainless steel 316L implant prototype, local implant, and imported implant are 83.7%, 87.5%, and 83.7% respectively. Comparison test using One Way ANOVA shows no significant difference between 3 groups (p>0.05). Iritation test results in 3 groups are grade 0 (no edema and no erythema). Acute toxicity/pyrogenicity test shows no statistically significant difference (p>0.05) among all groups. There is also no significant difference (p>0.05) of fibrous capsule ring thickness on 1 and 4 weeks after implantation. Based on ISO for medical test guide, stainless steel 316L implant prototype is safe and has similar biocompatibility test result compared to local and imported implant.Keywords                   : stainless steel 316L, biocompatibility, orthopaedic implantCorrespondence to    : [email protected] ABSTRAKKebutuhan implan orthopedi terus meningkat di Indonesia, namun produksinya terbatas dan sebagian besar masih impor dari luar negeri. Stainless steel, utama 316L adalah salah satu metal yang sering digunakan. Penelitian ini mengevaluasi biokompatibilitas dari prototipe implan stainless steel 316L, implan lokal yang diproduksi menggunakan stainless steel impor, dan implan stainless steel impor. Uji sitotoksisitas menggunakan sel mesenkim human dengan MTT assay. Uji iritasi, uji pirogenositas, dan uji implantasi menggunakan 24 tikus Wistar yang terbagi dalam 4 grup. Kami mengevaluasi skor Draize, perubahan berat dan temperatur rektal, dan ketebalan fibrous capsule ring. Uji sitotoksisitas menunjukkan persentase viabilitas sel pada prototipe stainless steel 316L, implan lokal, dan implan impor berturut-turut adalah 83,7%; 87,5%; dan 83,7%. Uji komparasi dengan One Way Anova tidak menunjukkan perbedaan signifikan diantara 3 grup (p>0,05). Hasil uji iritasi 3 grup menunjukkan grade 0 (tidak ada edema dan eritema). Uji pirogenositas tidak menunjukkan perbedaan signifikan pada semua grup (p>0,05). Tidak ada perbedaan signifikan (p>0,05) pula pada ketebalan fibrous capsule ring di minggu ke 1 dan 4 setelah implantasi. Berdasarkan ISO untuk pedoman uji di bidang medis, prototipe stainless steel 316L aman dan memiliki kesamaan hasil uji biokompatibilitas bila dibandingkan dengan implan lokal dan impor.Kata kunci              : stainless steel 316L, uji biokompatibilitas, implan orthopaediKorespondensi       : [email protected]

Acute toxicity and safety profile evolution of aqueous extracts of Sanren decoction using in vivo models

2021 ◽  
pp. 114940
Author(s):  
Qing Wang ◽  
Liutao Zhao ◽  
Hui Zhang ◽  
Shuo Zhang ◽  
Pu Yang ◽  
...  
Keyword(s):  
Acute Toxicity ◽  
Safety Profile ◽  
Aqueous Extracts ◽  
In Vivo Models

scholarly journals The Use of Activated Micronized Zeolite Clinoptilolite as a Possible Alternative to Antibiotics and Chestnut Extract for the Control of Undifferentiated Calf Diarrhea: An In Vitro and In Vivo Study

Animals ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2284
Author(s):  
Constantin Cerbu ◽  
Vlad Alexandru Ilaș ◽  
Michał Czopowicz ◽  
Adrian Valentin Potârniche ◽  
Elisa-Paz Bodart-Nieva ◽  
...  
Keyword(s):  
Symptomatic Treatment ◽  
In Vivo Study ◽  
Intestinal Epithelial ◽  
Diphenyltetrazolium Bromide ◽  
A Cell ◽  
Low Cytotoxicity ◽  
Toxic Potential ◽  
Interesting Alternative

Today, zeolite appears as an interesting alternative for the symptomatic treatment of acute diarrhea. Therefore, this study aimed to investigate the properties of activated micronized (5 microns) zeolite clinoptilolite (MZC) from Transylvania, Romania, first by testing it in vitro and then in vivo on calves with diarrhea. To assess the toxic potential of the MZC, we performed a cell cytotoxicity assay using the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) technique on primary bovine intestinal epithelial cells (BIECs). The antimicrobial activity of MZC was investigated by measuring the minimal inhibitory concentration (MIC) on Escherichia coli (ATCC 25922). The uncontrolled in vivo study was carried out over 8 days on a fattening farm, with some 650 calves. Selected calves were randomly assigned to four groups of 20 individuals. Several combinations between MZC, chestnut extract, and oxytetracycline were tested. At the beginning of the study, all calves had diarrhea, while at the end of the study, the prevalence of diarrhea was significantly lower in all four groups (p < 0.001), including the ones treated with MZC. Due to its low cytotoxicity on the intestinal cells and with regards to the results we obtained in vivo, MZC may be considered an alternative for the symptomatic treatment of undifferentiated diarrhea in calves.

scholarly journals MTT assay to evaluate the cytotoxic potential of a drug

2017 ◽  
Vol 12 (2) ◽  
pp. 8 ◽  
Author(s):  
Ashutosh Bahuguna ◽  
Imran Khan ◽  
Vivek K. Bajpai ◽  
Sun Chul Kang
Keyword(s):  
Cell Viability ◽  
Mtt Assay ◽  
Colorimetric Assay ◽  
Video Clip ◽  
Cell Number ◽  
Cytotoxic Potential ◽  
Lung Adenocarcinoma Cell Line ◽  
Full Screen ◽  
Purple Color

<p>Quantification of cell viability and proliferation form the fundamental for numerous <em>in vitro</em> assays in response to external factors. An MTT assay is a colorimetric assay based on assessing the cell metabolic activity. A549 Lung adenocarcinoma cell line was used to see the cytotoxic potential of a new drug for initial screening of apoptosis or necrosis. The biochemical mechanism behind the MTT assay involves NAD(P)H-dependent cellular oxidoreductase enzyme that converts the yellow tetrazolium MTT [3-(4, 5-dimethylthiazolyl-2)-2,5-diphenyltetrazolium bromide] into insoluble (E,Z)-5-(4,5-dimethylthiazol-2-yl)-1,3-diphenylformazan (formazan). The formed formazan can be dissolved with dimethyl sulfoxide (DMSO) to give a purple color with characteristic absorption at 540 nm. Intensity of purple color is directly proportional to the cell number and thus indicating the cell viability.</p><p><strong>Video Clip of Methodology:</strong> 3 min 56 sec  <a href="https://www.youtube.com//v/eqFxzDVunt8">Full screen</a>   <a href="https://www.youtube.com/watch?v=eqFxzDVunt8">If Failed</a></p>

scholarly journals Tin thiocarbonohydrazone complexes: synthesis, crystal structures and biological evaluation

2019 ◽  
Vol 8 (6) ◽  
pp. 862-867 ◽  
Author(s):  
Jin Wang ◽  
Yu-Ting Wang ◽  
Yan Fang ◽  
Yan-Li Lu ◽  
Ming-Xue Li
Keyword(s):  
Hepatocellular Carcinoma ◽  
Acute Toxicity ◽  
Hepg2 Cells ◽  
Biological Evaluation ◽  
Cytotoxic Potential ◽  
Dependent Effect ◽  
Ic50 Value ◽  
Ld50 Value ◽  
Dose Dependent ◽  
Dose Dependent Effect

Abstract In this article, three organotin complexes formulated as [(Me)2Sn(H2L1)] (1), [(Ph)2Sn(H2L1)]·MeOH (2) and [(Me)2Sn(HL2)(OAc)]4(Me)2O (3) (H4L1 = bis(2-hydroxybenzaldehyde) thiocarbohydrazone and H2L2 = bis(2-acetylpyrazine) thiocarbonohydrazone) have been synthesized and structurally characterized. Growth inhibition assays indicated that both the proligands and the three complexes are capable of showing anticancer activity against the human hepatocellular carcinoma HepG2 cells with H2L2 and complex 3 showing much higher cytotoxic potential. Subsequent toxicity studies on normal QSG7701cells showed that complex 3 has the highest tumor cell selectivity, and its IC50 value on QSG7701 cells is 8.48 fold higher than that in HepG2 cells. In acute toxicity experiments, complex 3 produces a dose-dependent effect in NIH mice with a LD50 value of 17.2 mg kg−1.

scholarly journals Decorosides A and B, Cytotoxic Flavonoid Glycosides from the Leaves of Rhododendron decorum

2014 ◽  
Vol 9 (4) ◽  
pp. 1934578X1400900 ◽  
Author(s):  
Mostafa E. Rateb ◽  
Hossam M. Hassan ◽  
El-Shaimaa A. Arafa ◽  
Marcel Jaspars ◽  
Rainer Ebel
Keyword(s):  
Spectral Data ◽  
Cell Lines ◽  
Cancer Cell ◽  
Mtt Assay ◽  
Methanolic Extract ◽  
Cancer Cell Lines ◽  
Biological Evaluation ◽  
Flavonoid Glycosides ◽  
Cytotoxic Activities ◽  
Diphenyltetrazolium Bromide

Bioassay and NMR-guided fractionation of the methanolic extract of Rhododendron decorum leaves resulted in the isolation of two new flavonoid glycosides, 5,7-dihydroxy-6,8-dimethyldihydroflavanone-7-O-α-L-arabinopyranosyl(l→6)-β-D-glucopyranoside (decoroside A, 1) and its 3-hydroxy congener (decoroside B, 2), along with five known compounds myricitrin (3), afzelin (4), (-)-epicatechin (5), (+)-catechin (6), and ampeloptin (7). The structures of the isolated compounds were elucidated by extensive interpretation of their spectral data. Biological evaluation using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay revealed promising cytotoxic activities of these compounds against different cancer cell lines.

In vitro antifilarial activity of extracts of the medicinal plant Cardiospermum halicacabum against Brugia pahangi

2000 ◽  
Vol 74 (3) ◽  
pp. 241-246 ◽  
Author(s):  
W. Khunkitti ◽  
Y. Fujimaki ◽  
Y. Aoki
Keyword(s):  
Medicinal Plant ◽  
Aqueous Extract ◽  
Mtt Assay ◽  
Ethanol Extract ◽  
Aqueous Extracts ◽  
Adult Males ◽  
Brugia Pahangi ◽  
Ethanol Extracts ◽  
Antifilarial Activity

AbstractThe in vitro effects of ethanol and aqueous extracts of the medicinal plant Cardiospermum halicacabum on adult worms and microfilariae of Brugia pahangi were investigated. With or without the plant extracts in culture medium, the motility of adult worms, microfilariae and microfilarial release from female worms were monitored daily. After 7 days of culture, viability or tissue damage of adult worms was assessed using the MTT assay. At > 500 μg ml-1, the aqueous extract significantly reduced motility of adult females after 24 h of exposure and adult males after 3 days. The aqueous extract, at > 500 μg ml-1, also significantly reduced microfilarial release from female worms, starting on day 2. The reduction in the motility of adult worms and the pattern of microfilarial release from female worms were concentration and time dependent. The MTT assay results revealed that adult worms cultured in the presence of aqueous extracts at > 500 μg ml-1 were damaged. However, the aqueous extract did not affect the motility of microfilariae with the exception of those in higher concentration extracts. Higher concentrations of ethanol extracts (2 mg ml-1) inhibited both the motility of adult worms and the release of microfilariae from females. Little effect of ethanol extracts was detected by the MTT assay, as only slight damage was caused to worms exposed only to the highest concentration (2 mg ml-1). However, ethanol extract at 500 μg ml-1 rapidly reduced the motility of microfilariae on day 2. The present study revealed that an aqueous extract of C. halicacabum has mild but definite direct macrofilaricidal action on B. pahangi.

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