scholarly journals Antagonistic effect of yohimbine on xylazine-induced sedation, bradycardia and hypothermia in cats.

1988 ◽  
Vol 19 (1) ◽  
pp. 7-13
Author(s):  
Katsuaki TAKASE ◽  
Yoshiaki HIKASA ◽  
Tomoko KAKUTA ◽  
Shigeo OGASAWARA ◽  
Masanori SAITO
Keyword(s):  
Antagonistic Effect

Antagonistic activity of Bacillus subtilis strains isolated from various sources

2018 ◽  
Vol 8 (2) ◽  
pp. 354-364
Author(s):  
A. N. Irkitova ◽  
A. V. Grebenshchikova ◽  
A. V. Matsyura
Keyword(s):  
Escherichia Coli ◽  
Bacillus Subtilis ◽  
Wild Strain ◽  
Fish Farming ◽  
Antagonistic Activity ◽  
Antagonistic Effect ◽  
E Coli ◽  
Long Period ◽  
Test Culture ◽  
Agar Media

<p>An important link in solving the problem of healthy food is the intensification of the livestock, poultry and fish farming, which is possible only in the adoption and rigorous implementation of the concept of rational feeding of animals. In the implementation of this concept required is the application of probiotic preparations. Currently, there is an increased interest in spore probiotics. In many ways, this can be explained by the fact that they use no vegetative forms of the bacilli and their spores. This property provides spore probiotics a number of advantages: they are not whimsical, easily could be selected, cultivated, and dried. Moreover, they are resistant to various factors and could remain viable during a long period. One of the most famous spore microorganisms, which are widely used in agriculture, is <em>Bacillus subtilis</em>. Among the requirements imposed to probiotic microorganisms is mandatory – antagonistic activity to pathogenic and conditional-pathogenic microflora. The article presents the results of the analysis of antagonistic activity of collection strains of <em>B. subtilis</em>, and strains isolated from commercial preparations. We studied the antagonistic activity on agar and liquid nutrient medias to trigger different antagonism mechanisms of <em>B. subtilis</em>. On agar media, we applied three diffusion methods: perpendicular bands, agar blocks, agar wells. We also applied the method of co-incubating the test culture (<em>Escherichia coli</em>) and the antagonist (or its supernatant) in the nutrient broth. Our results demonstrated that all our explored strains of <em>B. subtilis</em> have antimicrobial activity against a wild strain of <em>E. coli</em>, but to varying degrees. We identified strains of <em>B. subtilis</em> with the highest antagonistic effect that can be recommended for inclusion in microbial preparations for agriculture.</p><p><em><br /></em><em></em></p>

Antioxidant and Radiation Antagonistic Effect of Saraca indica

2010 ◽  
Vol 29 (1) ◽  
pp. 69-79 ◽  
Author(s):  
Bola Sadashiva Satish Rao ◽  
Nageshwar Rao ◽  
P. R. Archana ◽  
P. Gayathri ◽  
Prerana Shetty
Keyword(s):  
Antagonistic Effect

The antagonistic effect ofBacillus pumiluson pathogenic Vibrio

2013 ◽  
Vol 37 (10) ◽  
pp. 1564
Author(s):  
Jing GUO ◽  
Juan WANG ◽  
Zengfu SONG ◽  
Liang JIA ◽  
Yonghua ZHANG ◽  
...  
Keyword(s):  
Antagonistic Effect ◽  
Pathogenic Vibrio

In vivo Experiments of Natural Products Protection of Antagonistic Effects of Lead on Iron

2018 ◽  
Vol 68 (12) ◽  
pp. 2747-2751
Author(s):  
Marioara Nicula ◽  
Nicolae Pacala ◽  
Lavinia Stef ◽  
Ioan Pet ◽  
Dorel Dronca ◽  
...  
Keyword(s):  
Aquatic Environment ◽  
Iron Homeostasis ◽  
Iron Concentration ◽  
Antagonistic Effect ◽  
Tissue Samples ◽  
Antagonistic Effects ◽  
In Vivo Experiments ◽  
Living Organisms ◽  
Toxic Potential

Living organisms take nutrients from the environment, and together with them, substances with toxic potential � such as heavy metals. Lead is one common metal pollutant especially in aquatic environment, from where the fish can be intoxicated very easily. Bioavailability, distribution, toxic action, synergistic and antagonistic effects are characteristics which can alter the fish health. Our experimental study followed the effects of lead overload in water on iron distribution, in different tissues sample Carassius gibelio Bloch fish. We performed the experiment in four different fish groups: control C; lead � Pb (administration of lead in water 0.075mg/mL of water, as Pb(NO3)2 x � H2O); lead (the same dose) and 2% of freeze-dry garlic incorporated into fishes� food � Pb+garlic; lead (the same dose) and 2% chlorella incorporated into fishes� food � Pb+chlorella, for 21 consecutive days. The iron concentration was analysed with AAS (Atomic Absorption Spectroscopy) from gills, muscle, skin (and scales), intestine, liver, heart, brain, ovary, testicles, and kidney. The obtained data presented a significantly decrease of iron content in all tested tissue samples that demonstrated, alteration of iron homeostasis, explained by a strong antagonistic effect of lead on iron. Our experiment showed that biologic active principles from garlic and chlorella act like natural protectors, and potentiate the iron deficiency even in the case of lead overload in aquatic environment, for fish.

GC-MS, HPLC, TLC of Dorycnium herbaceum Tincture Species and Synergistic / Antagonist Effect Testing in Combination with Antibiotics

2017 ◽  
Vol 68 (2) ◽  
pp. 228-231 ◽  
Author(s):  
Renata Maria Varut ◽  
Luciana Teodora Rotaru
Keyword(s):  
Chemical Composition ◽  
Clavulanic Acid ◽  
Carboxylic Acids ◽  
Therapeutic Effect ◽  
Antagonistic Effect ◽  
Hydroalcoholic Extract ◽  
Low Concentrations ◽  
Amoxicillin Clavulanic Acid ◽  
Reference Strains ◽  
Antagonist Effect

The study objectives were to determine the chemical composition and the synergistic / antagonistic effect of the association between hydroalcoholic extract from the Dorycnii pentaphylli herba (DPH) and the antibiotics of choice, on five reference strains. The tincture contains flavonoids and polyphenol carboxylic acids in low concentrations. DPH has an antagonistic effect on three of the drugs tested (amoxicillin + clavulanic acid, levofloxacin, amikacin), the therapeutic effect being completely canceled and has no significant effect on two of them (ceftazidime, cefotaxime).

The Effect of Active Principles of Lyophilized Garlic and Chlorella on Reduction of Tissue Bioaccumulation and Lead Antagonism to Zinc in Carassius gibelio

2017 ◽  
Vol 68 (9) ◽  
pp. 2006-2009
Author(s):  
Marioara Nicula ◽  
Nicolae Pacala ◽  
Isidora Radulov ◽  
Mirela Ahmadi ◽  
Dorel Dronca ◽  
...  
Keyword(s):  
Protective Effect ◽  
Aquatic Environment ◽  
Toxic Metal ◽  
Antagonistic Effect ◽  
High Concentration ◽  
Carassius Gibelio ◽  
Liver And Kidney ◽  
Living Organisms

In living organisms lead is classified as potential toxic metal, and in high concentration can produce intoxication with the alteration of some vital organs, especially liver and kidney. In aquatic environment lead can be absorbed by fishes and other organisms, with different distribution in various tissues. Our aim of experiment was to verify and demonstrate the protective effect of lyophilized garlic and chlorella against bioaccumulation of lead in fishes living in aquatic environment deliberated polluted with lead. Thus, lyophilized garlic and chlorella administrated as supplements in fodder for fishes (Carassius gibelio) diminished the antagonistic effect of lead against zinc in all tested tissues: liver, kidney, heart, brain, ovary, testis, muscles myotome � epaxial, skin � with scales, gills, and intestine.

Microtox evaluation of industrial wastewaters

1994 ◽  
Vol 30 (10) ◽  
pp. 97-106 ◽  
Author(s):  
Cheng-Fang Lin ◽  
Oliver J. Hao ◽  
Fu-Tien Jeng
Keyword(s):  
Treatment Process ◽  
Antagonistic Effect ◽  
Industrial Wastes ◽  
Activated Sludge Process ◽  
Industrial Parks ◽  
Close Relationship ◽  
Microtox Assay ◽  
Microtox Toxicity ◽  
The Individual ◽  
Final Effluent

The main purpose of this study was to establish an inhibitory database using the Microtox assay for different wastes. The waste samples included 19 pretreated industrial wastes from two different industrial parks, 11 other industrial wastes outside industrial parks, and different treatment process effluents. The following is a brief summary of the findings from this study: (1) COD and BOD had a close relationship among different wastes; (2) Microtox data did not correlate with the conventional parameters of BOD, COD and SS; (3) many wastes did not meet the pretreatment standards and exhibited high Microtox toxicity; (4) some wastes exhibited high Microtox toxicity, although they met the pretreatment standards; (5) the mixture of the individual wastes exhibited an antagonistic effect; (6) the activated sludge process removed 60-75% of influent toxicity; and (7) the final effluent sometimes showed an increase in Microtox toxicity.

scholarly journals Synergistic and Antagonistic Effects of Sodium Molybdate-Zn2+System

2012 ◽  
Vol 9 (4) ◽  
pp. 1746-1752 ◽  
Author(s):  
J. Wilson Sahayaraj ◽  
A. John Amalraj ◽  
Susai Rajendran ◽  
N. Vijaya
Keyword(s):  
Aqueous Solution ◽  
Weight Loss ◽  
Inhibition Efficiency ◽  
Sodium Molybdate ◽  
Antagonistic Effect ◽  
Protective Film ◽  
Antagonistic Effects ◽  
Polarization Study ◽  
Weight Loss Method ◽  
Loss Method

The inhibition efficiency (IE) of sodium molybdate (SM) in controlling corrosion of carbon steel in an aqueous solution containing 120 ppm of Cl-, in the absence and presence of Zn2+has been evaluated by weight-loss method. A synergistic effect exists between SM and Zn2+when the concentration of Zn2+is 25 ppm and above. Inhibition efficiencies obtained are greater than 85%. Antagonistic effect exists between SM and Zn2+when the concentration of Zn2+is 10 ppm and below. The SM-Zn2+system shows excellent IE up to third day. Above third day IE decreases. Acceleration of corrosion takes place. Excellent IE is shown at pH 5,7 and 12. At pH 9, IE decreases since Zn2+is precipitated as Zn(OH)2in the bulk of the solution. Polarization study reveals that SM-Zn2+system functions as a mixed inhibitor. FTIR spectra reveal that the protective film consists of Fe2+-SM complex and Zn(OH)2.

Antagonistic effect ofpediococcusspp. againstlisteria monocytogenes

1989 ◽  
Vol 3 (2) ◽  
pp. 183-196 ◽  
Author(s):  
D. G. Hoover ◽  
K. J. Dishart ◽  
M. A. Hermes
Keyword(s):  
Antagonistic Effect
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