Safety of a feed additive consisting of vitamin B/riboflavin produced with CCTCCM 2019833 for all animal species (Hubei Guangji Pharmaceutical Co., Ltd).

Following a request from the European Commission, the Panel on Additives and Products or Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety of a feed additive consisting of vitamin B/riboflavin produced with CCTCCM 2019833 intended for use as a nutritional additive (functional group: vitamins, pro-vitamins and chemically well-defined substances having similar effects) for all animal species. The characterisation, safety and efficacy of the additive have been already assessed previously; however, the FEEDAP Panel could not conclude on the safety of the additive for the target species, consumers and the users due to lack of reliable toxicological data. In the present assessment, the applicant submitted new genotoxicity and repeated dose oral toxicity studies.

Endocrine-Disrupting Effects of Transplacental and Translactational Exposure to Tembotrione on Hormone Status in Wistar Rat Offspring at Different Developmental Stages: A Pilot Study.

Green agronomy promotes the implementation of natural and naturally derived substances in crop protection. In the present study, we evaluated the endocrine-disrupting potential of the allelopathic herbicide tembotrione in Wistar rats by studying the hormone status of offspring from the treated dams. Three doses of tembotrione (0.

Does the Symbiotic Relationship Between Hydra Viridissima and Photoautotrophic Alga Provide an Evolutionary Advantage in Protecting DNA against Damage by the Cytotoxic or Genotoxic Mode of Action of Environmental Stressors?

The aim of this paper was to evaluate whether symbiotic cooperation between green hydra (Hydra viridissima) and photoautotrophic alga gives higher resistance of the preservation of DNA integrity compared to brown hydra (Hydra oligactis). Norflurazon concentrations were 0.061 or 0.

Evaluation of Cytotoxic and Genotoxic Effects in Buccal Mucosal Cells in Non-Smokers and Users of Traditional Combustible Tobacco Products and Non-Combustible Alternatives.

Aims/objectives: The aim of this cross-sectional observational study was to investigate cytogenetic damage to the buccal mucosa in non-smokers and consumers of traditional combustible tobacco products and non-combustible alternatives.

Methods: A total of 160 participants were divided into four groups according to the type of product used, including non-smokers, users of conventional combustible tobacco (cigarettes), heated tobacco, and electronic, tobacco-free vapor products (e-cigarettes). Buccal mucosa samples were analyzed using the micronucleus cytome assay to assess cytotoxic and genotoxic damage.

Assessment of Cytotoxic and Genotoxic Effect of Modern Dental Materials .

Objectives: The aim of the study was to assess the biocompatibility of modern composite and amalgam dental fillings.

Material And Methods: The research was conducted on 150 healthy patients between the ages of 10 and 20 who had amalgam and composite fillings between 6 and 12 months. Under conditions, a swab of buccal cells near the fillings was taken, and the cytotoxic and genotoxic impact of composite and amalgam fillings on these cells was analyzed using the extended micronucleus test (cytomeassay).

Safety and efficacy of a feed additive consisting of 25-hydroxycholecalciferol (produced by DSM 32858) for all pigs, all poultry for fattening and ornamental birds and other poultry species (Huvepharma NV).

Following a request from the European Commission, EFSA was asked to deliver a scientific opinion on the safety and efficacy of a feed additive consisting of 25-hydroxycholecalciferol (produced by DSM 32858) for all pigs, all poultry for fattening and ornamental birds and other poultry species. The production strain DSM 32858 is not genetically modified however, uncertainties remain on the possible presence of its viable cells in the final product. Due to the lack of adequate safety data and uncertainty on the presence of nano particles, the FEEDAP Panel cannot conclude on the safety of the additive for the target species and the consumer.

Safety and efficacy of the feed additive consisting of 6-phytase (produced by DSM 33699) (RONOZYME® Hiphos GT/L) for poultry, pigs for fattening, weaned piglets and sows (DSM Nutritional Products Ltd).

The additive RONOZYME® Hiphos (GT/L) contains 6-phytase produced with a genetically modified strain of the filamentous fungus , it is currently authorised for poultry, pigs for fattening, weaned piglets and sows. The applicant has requested to change the production strain, substituting strain DSM 22594 for DSM 33699. RONOZYME® Hiphos (GT/L), manufactured with the production strain DSM 33699, did not give rise to safety concerns with regard to the genetic modification of the production strain.

Evaluation of Toxic Effects Induced by Sub-Acute Exposure to Low Doses of α-Cypermethrin in Adult Male Rats.

To contribute new information to the pyrethroid pesticide α-cypermethrin toxicity profile, we evaluated its effects after oral administration to Wistar rats at daily doses of 2.186, 0.015, 0.

Clinical Prospective Assessment of Genotoxic Effects of Dental Implants in Gingival Epithelial Cells.

Objectives: Although titanium-based implants are considered bioinert, it has been found that they are subject to corrosion and wear. This study aimed to evaluate the cytotoxic and genotoxic potential of two implant systems in gingival epithelial cells.

Material And Methods: Gingival swabs were taken three times from 91 subjects.

Safety and efficacy of a feed additive consisting of endo-1,4-β-xylanase produced by DSM 33574 (Xylamax) for chickens and turkeys for fattening, chickens reared for laying/breeding, turkeys reared for breeding and minor poultry species for fattening or raised to the point of lay (BioResource international, Inc.).

Following a request from the European Commission, the EFSA Panel on Additives and Products of Substances used in Animal Feed (FEEDAP) was asked to deliver a scientific opinion on the safety and efficacy of the product containing endo-1,4-β-xylanase produced by DSM 33574 (Xylamax) as a zootechnical additive in chickens for fattening, chickens reared for laying/breeding, turkeys for fattening, turkeys reared for breeding and minor poultry species for fattening or raised to the point of lay. The production strain is genetically modified. No viable cells nor recombinant DNA of the production strain were detected in the final product.

Ochratoxin A potentiates citrinin accumulation in kidney and liver of rats.

Ochratoxin A (OTA) and citrinin (CTN) are nephrotoxic mycotoxins often found together in grain. The aim of this study was to measure their accumulation in the kidney and liver of adult male Wistar rats, see how it would be affected by combined treatment, and to determine if resveratrol (RSV) would decrease their levels in these organs. The rats received 125 or 250 mg/kg bw of OTA by gavage every day for 21 days and/or 20 mg/kg bw of CTN a day for two days.

ASSESSMENT OF CYTOGENETIC DAMAGE TO EXFOLIATED GINGIVAL CELLS IN PATIENTS WITH CHRONIC GENERALIZED PERIODONTITIS.

The aim of this cross-sectional study was to investigate the occurrence of chromosomal abnormalities through the frequency of micronuclei and other genomic damage markers in patients with chronic generalized periodontitis and without periodontal disease. Micronucleus assay was performed in exfoliated gingival epithelial cells of 35 patients with generalized chronic periodontitis and 30 control subjects with healthy periodontium. Full mouth clinical examination was performed to define periodontal condition.

Assessment of transplacental and lactational genotoxicity of tembotrione in Wistar rats at different developmental stages by alkaline comet assay.

This paper assessed the potential of trans-placental and -lactational genotoxicity and oxidative stress induction of tembotrione, a naturally derived allelopathic herbicide. Several treatment protocols were applied to measure primary DNA damage by alkaline comet assay in leucocytes and liver. To address the oxidative stress induction, TBARS, ROS, SOD, CA, GSH-Px activity were recorded.

Assessment of Cytotoxic and Genotoxic Effect of Fissure Sealants in Buccal Epithelial Cells.

Aim: The main purpose of this study was to assess the genotoxic and cytotoxic effect of fissure sealants on buccal epithelial cells.

Material And Methods: The study was conducted on 45 patients (27 girls and 18 boys), seven to 16 years of age (age mean 12.09 ± 2.

Safety evaluation of the food enzyme cellulase from the non-genetically modified strain DP-Lzc35.

The food enzyme cellulase (4-(1,3;1,4)-β-d-glucan 4-glucanohydrolase; EC 3.2.1.

Biomonitoring findings for occupational lead exposure in battery and ceramic tile workers using biochemical markers, alkaline comet assay, and micronucleus test coupled with fluorescence in situ hybridisation.

Manufacture of lead-containing products has long been associated with various health risks. To get an insight into the related genotoxic risks, we conducted a biomonitoring study in 50 exposed workers and 48 matched controls using a battery of endpoints that sensitively detect the extent of genome instability in peripheral blood lymphocytes. The levels of primary DNA damage were estimated with the alkaline comet assay, while cytogenetic abnormalities were determined with the cytokinesis-block micronucleus (CBMN) cytome assay.

Effects of low-level imidacloprid oral exposure on cholinesterase activity, oxidative stress responses, and primary DNA damage in the blood and brain of male Wistar rats.

Imidacloprid is a neonicotinoid insecticide that acts selectively as an agonist on insect nicotinic acetylcholine receptors. It is used for crop protection worldwide, as well as for non-agricultural uses. Imidacloprid systemic accumulation in food is an important source of imidacloprid exposure.

Safety evaluation of the food enzyme triacylglycerol lipase from the genetically modified strain DP-Jzk33.

The food enzyme triacylglycerol lipase (triacylglycerol acylhydrolase EC 3.1.1.

Safety evaluation of the food enzyme xylose isomerase from the genetically modified strain DP-Pzn37.

The food enzyme is a d-xylose aldose-ketose-isomerase (EC 5.3.1.

Safety evaluation of the food enzyme glucan 1,4-α-maltotetraohydrolase from (strain DP-Dzf24).

The food enzyme glucan 1,4-α-maltotetraohydrolase (EC 3.2.1.

Safety evaluation of the food enzyme α-amylase from (strain DP-Dzb44).

The food enzyme α-amylase (1,4-α-d-glucan glucanohydrolase; EC 3.2.1.

Evaluation of oxidative stress responses and primary DNA damage in blood and brain of rats exposed to low levels of tembotrione.

Tembotrione is a rather novel pesticide, usually used for post-emergence weed control. Even though its use is rapidly growing, it is not followed by an adequate flow of scientific evidence regarding its toxicity towards non-target organisms. We evaluated the potential of low doses of tembotrione to induce oxidative stress and cytogenetic damage in blood and brain cells of adult male Wistar rats.