Search Results for: Histologic
Effect of Yerbimat herbicide on lipid peroxidation, catalase activity, and histological damage in gills and liver of the freshwater fish Goodea atripinnis
Abstract: The use of herbicides for agricultural and aquatic weed control has increased worldwide. These substances are potentially toxic pollutants because they induce the production of reactive oxygen species for biological systems and exert oxidative stress in nontarget organisms living in the treated aquatic systems. Recent evidence suggests differences in the toxicity of glyphosate in …
Nutritional, physiological, and histological responses in Atlantic salmon, Salmo salar L. fed diets with genetically modified maize
Abstract: The objective of this study was to evaluate whether standard fish meal diets prepared with increasing levels of genetically modified (GM; 150 and 300 g kg−1) maize (event MON810®) as a starch source, showed any nutritional or physiological adverse effects on Atlantic salmon, Salmo salar L. postsmolt. The diets with low or high inclusions of GM …
Effects of glyphosate-based herbicide on pintado da Amazônia: Hematology, histological aspects, metabolic parameters and genotoxic potential
Abstract: Roundup Original® is an herbicide widely used in Mato Grosso’s agriculture and it may contamine water bodies, being an unforeseen xenobiotic to aquatic organisms, particularly fish. This study investigated the effects on the hybrid fish jundiara (Leiarius marmoratus × Pseudoplatystoma reticulatum) of an environmentally relevant exposure to this herbicide. Glucose levels in liver, muscle …
Search by Keyword
Search the primary studies database using one of the pre-defined keyword searches below. # 2,4-Dichlorophenoxyacetic acid (2,4-D) 35S A Acetylcholinesterase Aegilops cylindrica Aflatoxin Africa African Catfish (Clarias Gariepinus) African clawed frog (Xenopus laevis) Agrobacterium Agroecology Agrostis Agrostis stolonifera Alfalfa (Medicago sativa) Allergy Alpaida Veniliae Amaranthus palmeri Amaranthus tuberculatus Ambrosia artemisiifolia Ambystoma gracile Ambystoma laterale Ambystoma …
Effects of glyphosate and its commercial formulation, Roundup® Ultramax, on liver histology of tadpoles of the neotropical frog, Leptodactylus latrans (amphibia: Anura)
Abstract: In the last years, the agricultural expansion has led to an increased use of pesticides, with glyphosate as the most widely used worldwide. This is also the situation in Argentina, where glyphosate formulations are the most commercialized herbicides. It is known that glyphosate formulations are much more toxic than the active ingredient, and this difference …
Histopathological finding of liver and kidney tissues of the yellow mystus, Hemibagrus filamentus (Fang and Chaux, 1949), from the Tapee River, Thailand
Abstract: A histological finding of liver and kidney tissues of yellow mystus, Hemibagrus filamentus (Fang and Chaux, 1949), collected from the Tapee River (Chawang District, Nakhon Si Thammarat Province, Thailand) was conducted to examine the pathological lesions. Lesions, including cellular swelling, hydropic degeneration, or vacuolation of hepatocytes were found. From this, coagulative necrosis with pyknotic …
Histopathological effects of glyphosate and its toxicity to the earthworm Nsukkadrilus mbae
Abstract: This study was carried out to investigate the toxicity of Roundup, aglyphosate-containing herbicide to the earthworm Nsukkadrilus mbae and the associated histological changes. One hundred and sixty fiveearthworms were randomly divided into five groups and exposed to different concentrations of glyphosate (0.0, 13.0, 52.0, 117.0 and 207 mg/Kg soil) for 96 h. The mortality …
Ultrastructural characteristic of rats liver of the third generation with the influence of genetically modified and traditional soybean
Abstract: Summary the article discusses the results of electronic microscopic researches of the rats’ liver of the third generation which were fed with the genetically modified and traditional soybean. Object of the research were 42 rats of the Wistar line, weight of 160–180 g, age of 3.5–4 months. Three groups were formed, 14 rats in each …
Glyphosate impairs male offspring reproductive development by disrupting gonadotropin expression
Abstract: Sexual differentiation in the brain takes place from late gestation to the early postnatal days. This is dependent on the conversion of circulating testosterone into estradiol by the enzyme aromatase. The glyphosate was shown to alter aromatase activity and decrease serum testosterone concentrations. Thus, the aim of this study was to investigate the effect …
A three-year longitudinal study on the effects of a diet containing genetically modified Bt176 maize on the health status and performance of sheep
Abstract: This study shows that a diet including insect-resistant Bt176 maize, fed to 53 ewes and their progeny for 3 years, did not have adverse effects on their health or performance and that no horizontal gene transfer to ruminal microorganisms or animal tissues was detected. No differences were observed regarding performance, reproductive traits, haematological parameters, …
Effects of herbicides and the chytrid fungus Batrachochytrium dendrobatidis on the health of post-metamorphic northern leopard frogs (Lithobates pipiens)
Abstract: Effects of exposure to contaminants such as pesticides along with exposure to pathogens have been listed as two major contributors to the global crisis of declining amphibian populations. These two factors have also been linked in explanations of the causes of these population declines. We conducted a combined exposure experiment to test the hypothesis …
The endocrine disrupter effect of atrazine and glyphosate on Biomphalaria alexandrina snails
Abstract: Atrazine (AZ) and glyphosate (GL) are herbicides that are widely applied to cereal crops in Egypt. The present study was designed to investigate the response of the snail Biomphalaria alexandrina (Mollusca: Gastropoda) as a bioindicator for endocrine disrupters in terms of steroid levels (testosterone (T) and 17β-estradiol (E)), alteration of microsomal CYP4501B1-like immunoreactivity, total …
Quizalofop-P-ethyl exposure increases estrogen axis activity in male and slightly decreases estrogen axis activity in female zebrafish (Danio rerio)
Abstract: The herbicide Quizalofop-P-ethyl (QpE) exerts toxic effects in fish, but limited information is currently available on its effects on the endocrine system. In the current study, adult zebrafish (Danio rerio) were exposed to different concentrations (0, 2, 20, 200 μg/L) of QpE for 30 days. In males, QpE exposure significantly increased plasma estradiol (E2) …
Dicamba affects sex steroid hormone level and mRNA expression of related genes in adult rare minnow (Gobiocypris rarus) at environmentally relevant concentrations
Abstract: Dicamba is a benzoic acid herbicide that has been detected in surface and ground water. The herbicide has been shown to have cytogeneic and DNA damaging effects and to cause organ damage in mammals; however, little is known about the endocrine disrupting effects of dicamba in fish. In this study, histological changes, plasma vitellogenin …
Does transgenic feed cause histopathological changes in rats?
Abstract: Genetically modified (GM) crops have been commercially available for human and animal consumption since the 1990s. The safety evaluations are based on the concept of substantial equivalence, which assumes that the toxicity of a product can be investigated by assessing the toxicity of individual components of the product and not the product as a …
