Results 11 to 20 of about 5,585,699 (313)

Acute Oral Toxicity of Tetrodotoxin in Mice: Determination of Lethal Dose 50 (LD50) and No Observed Adverse Effect Level (NOAEL) [PDF]

open access: yesToxins, 2017
Tetrodotoxin (TTX) is starting to appear in molluscs from the European waters and is a hazard to seafood consumers. This toxin blocks sodium channels resulting in neuromuscular paralysis and even death. As a part of the risk assessment process leading to
Natalia Vilariño   +2 more
exaly   +9 more sources

Determination of optimum dose based of biological responses of lethal dose (LD25, 50, 75) and growth reduction (GR25, 50, 75) in ‘Yaghouti’ grape due to gamma radiation

open access: yesScientific Reports, 2023
Ionizing radiations are a helpful technique and have improved financial potential in developing new and unique commercially important fruit tree varieties.
Ali Akbar Ghasemi-Soloklui   +2 more
doaj   +4 more sources

Detection of Lethal Dose 50 of Biofilm-producing Methicillin-resistant Staphylococcus aureus Local Isolate From Mastitis

open access: yesمجلة الانبار للعلوم البيطرية, 2021
It is very important, before starting the manufacture of any vaccine from any microorganism estimation of LD₅₀ of that microorganism to determine their pathogenicity and virulence.
Abdullah Abdullazeez Sheehan   +2 more
doaj   +3 more sources

Propidium monoazide PCR, a method to determine OsHV-1 undamaged capsids and to estimate virus Lethal Dose 50 [PDF]

open access: yesVirus Research
Ostreid herpes virus 1 (OsHV-1) has been classified within the Malacoherpesviridae family from the Herpesvirales order. OsHV-1 is the etiological agent of a contagious viral disease of Pacific oysters, C.
Tristan Renault   +2 more
doaj   +5 more sources

Confidence limit calculation for antidotal potency ratio derived from lethal dose 50. [PDF]

open access: yesWorld J Methodol, 2013
To describe confidence interval calculation for antidotal potency ratios using bootstrap method.We can easily adapt the nonparametric bootstrap method which was invented by Efron to construct confidence intervals in such situations like this. The bootstrap method is a resampling method in which the bootstrap samples are obtained by resampling from the ...
Manage A, Petrikovics I.
europepmc   +3 more sources

The acute lethal dose 50 (LD50) of caffeine in albino rats.

open access: yesRegulatory Toxicology and Pharmacology, 2016
An acute LD50 is a statistically derived amount of a substance that can be expected to cause death in 50% of the animals when given by a specified route as a single dose and the animals observed for a specified time period.
R. Adamson
semanticscholar   +3 more sources

Acute Toxicity (Lethal Dose 50 Calculation): Medicine as a Life Saver or Destroyer

open access: yesInternational Journal of Advance Research and Innovation, 2019
Lethal dose (LD 50) has been calculated. Different-testing methods have been used. The observed values have been plotted by Dose-Response against measured response and dose. Different LD value shows that all substances are poison. It depend on the amount
M. Chaudhary, Alka, Sajid Ali
semanticscholar   +2 more sources

Effect of Linezolid on the 50% Lethal Dose and 50% Protective Dose in Treatment of Infections by Gram-Negative Pathogens in Naive and Immunosuppressed Mice and on the Efficacy of Ciprofloxacin in an Acute Murine Model of Septicemia [PDF]

open access: yesAntimicrobial Agents and Chemotherapy, 2012
ABSTRACTMurine models of infection were used to study the effect of linezolid on the virulence of Gram-negative bacteria and to assess potential pharmacodynamic interactions with ciprofloxacin in the treatment of these infections, prompted by observations from a recent clinical trial.
A. Marra   +8 more
semanticscholar   +3 more sources

Reevaluation of the acute toxicity of palytoxin in mice: Determination of lethal dose 50 (LD50) and No-observed-adverse-effect level (NOAEL).

open access: yesToxicon, 2020
Palytoxin is an emergent toxin in Europe and one of the most toxic substances know to date. The toxin disrupts the physiological functioning of the Na+/K+-ATPase converting the enzyme in a permeant cation channel.
Andrea Boente-Juncal   +5 more
semanticscholar   +4 more sources

Acute Toxicity (Lethal Dose 50 Calculation) of Herbal Drug Somina in Rats and Mice

open access: yesPharmacology & Pharmacy, 2015
Somina (herbal preparation) prepared by Hamdard Laboratories (Waqf) Pakistan is a mixture of five different medicinal plants, widely prescribed for the treatment of mental illness.
Muhammad Ahmed
semanticscholar   +3 more sources

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