Genotoxicity in the absence of inflammation after tungsten inhalation in mice.

Tungsten is used in several applications and human exposure may occur. To assess its pulmonary toxicity, we exposed male mice to nose-only inhalation of tungsten particles at 9, 23 or 132 mg/m (Low, Mid and High exposure) (45 min/day, 5 days/week for 2 weeks). Increased genotoxicity (assessed by comet assay) was seen in bronchoalveolar (BAL) fluid cells at Low and High exposure.

Pulmonary toxicity of molybdenum disulphide after inhalation in mice.

Molybdenum disulphide (MoS) is a constituent of many products. To protect humans, it is important to know at what air concentrations it becomes toxic. For this, we tested MoS particles by nose-only inhalation in mice.

Unchanged pulmonary toxicity of ZnO nanoparticles formulated in a liquid matrix for glass coating.

The inclusion of nanoparticles can increase the quality of certain products. One application is the inclusion of Zinc oxide (ZnO) nanoparticles in a glass coating matrix to produce a UV-absorbing coating for glass sheets. Yet, the question is whether the inclusion of ZnO in the matrix induces toxicity at low exposure levels.

Comparison of biodistribution of cerium oxide nanoparticles after repeated oral administration by gavage or snack in Sprague Dawley rats.

The rate of translocation of ingested nanoparticles (NPs) and how the uptake is affected by a food matrix are key aspects of health risk assessment. In this study, female Sprague Dawley rats (N = 4/group) received 0, 1.4, or 13 mg of cerium oxide (CeO NM-212) NPs/rat/day by gavage or in a chocolate spread snack 5 days/week for 1 or 2 weeks followed by 2 weeks of recovery.

Causes of stress and conflict in the veterinary professional workplace - a perspective from Poland.

Background: The problems of burnout and the moral and ethical distress resulting from various kinds of conflict have been raised in the veterinary profession. However, their sources and inter-relationships have not been thoroughly recognized mainly due to the multidimensional nature of human interactions related to animal breeding, farming, welfare, prophylaxis and therapy. For the first time in Poland, an analysis of conflict and conflict-causing factors in veterinary practice has been conducted with the participation of veterinarians of various specialties and the owners of different animal species.

Organomodified nanoclays induce less inflammation, acute phase response, and genotoxicity than pristine nanoclays in mice lungs.

Surface modification by different quaternary ammonium compounds (QAC) makes nanoclays more compatible with various polymeric matrices, thereby expanding their potential applications. The growing industrial use of nanoclays could potentially pose a health risk for workers. Here, we assessed how surface modification of nanoclays modulates their pulmonary toxicity.

Retrospective Liver Histomorphological Analysis in Dogs in Instances of Clinical Suspicion of Congenital Portosystemic Shunt.

Introduction: The clinical symptoms of portosystemic shunts (PSSs) and hepatic microvascular dysplasia (HMD) - portal vein hypoplasia (PVH) in dogs are similar. PSSs are abnormal vascular connections between the portal vein system and systemic veins. HMD is a very rare developmental vascular anomaly, recognisable during histopathological examination.

Where are we with Polish pathology at the turn of the centuries in the light of the Congresses of the Polish Society of Pathologists?

The aim of this study is to depict the current and past research directions in Polish pathology at the turn of the centuries. The analysis was based on the abstracts of the congresses of the Polish Society of Pathologists organized in 1992-2016 and concerned 1,824 presentations. It has been proven that oncology (1,090 presentations, 59.

Physicochemical predictors of Multi-Walled Carbon Nanotube-induced pulmonary histopathology and toxicity one year after pulmonary deposition of 11 different Multi-Walled Carbon Nanotubes in mice.

Multi-walled carbon nanotubes (MWCNT) are widely used nanomaterials that cause pulmonary toxicity upon inhalation. The physicochemical properties of MWCNT vary greatly, which makes general safety evaluation challenging to conduct. Identification of the toxicity-inducing physicochemical properties of MWCNT is therefore of great importance.

Research Directions in European Veterinary Pathology in 2010-2016 based on the Congresses of the European Society of Veterinary Pathology and the European College of Veterinary Pathologists.

The objective of this paper is to depict the current research directions in veterinary pathology in Europe. The analysis was carried out based on the abstracts and agendas of the annual European Society of Veterinary Pathology (ESVP) congresses organised together with the European College of Veterinary Pathologists (ECVP) in 2010-2016. In total, 1444 presentations were evaluated, including 41 plenary lectures, 319 short oral presentations, and 1081 posters, and in 2016 also three science slams.

Gills as morphological biomarkers in extensive and intensive rainbow trout (Oncorhynchus mykiss, Walbaum 1792) production technologies.

We investigated environmental impacts on rainbow trout (Oncorhynchus mykiss) reared at fish farms with either extensive technology, in a flow-through system (FTS, n = 3), or intensive technology, in a recirculating aquaculture system (RAS, n = 3). All fish were fed the same rations. Fish were caught in spring and autumn (body mass, 501-750 g) from these six farms.

Invasive forms of canine endoparasites as a potential threat to public health - A review and own studies.

[b]Abstract [/b] Dogs serve as the vectors of serious zoonotic parasitic diseases. In the month of May 2012 - 2014, 339 dog faeces samples from seven public sites in Chełmno, a town in northern Poland, were collected and examined to determine the gastrointestinal parasite fauna of dogs. Each faecal sample was dissected with a needle, checked for tapeworm segments and examined for parasite eggs and oocysts using the flotation and decantation method and a modified Baermann technique.

Epoxy composite dusts with and without carbon nanotubes cause similar pulmonary responses, but differences in liver histology in mice following pulmonary deposition.

Background: The toxicity of dusts from mechanical abrasion of multi-walled carbon nanotube (CNT) epoxy nanocomposites is unknown. We compared the toxic effects of dusts generated by sanding of epoxy composites with and without CNT. The used CNT type was included for comparison.

Acute and subacute pulmonary toxicity and mortality in mice after intratracheal instillation of ZnO nanoparticles in three laboratories.

Inhalation is the main pathway of ZnO exposure in the occupational environment but only few studies have addressed toxic effects after pulmonary exposure to ZnO nanoparticles (NP). Here we present results from three studies of pulmonary exposure and toxicity of ZnO NP in mice. The studies were prematurely terminated because interim results unexpectedly showed severe pulmonary toxicity.

Changes in cholesterol homeostasis and acute phase response link pulmonary exposure to multi-walled carbon nanotubes to risk of cardiovascular disease.

Adverse lung effects following pulmonary exposure to multi-walled carbon nanotubes (MWCNTs) are well documented in rodents. However, systemic effects are less understood. Epidemiological studies have shown increased cardiovascular disease risk after pulmonary exposure to airborne particles, which has led to concerns that inhalation exposure to MWCNTs might pose similar risks.

Effect of mucoprotective plant-derived therapies on damage to colonic mucosa caused by carprofen and robenacoxib administered to healthy dogs for 21 days.

Background: Non-steroidal anti-inflammatory drugs (NSAIDs) may cause gastrointestinal damage in dogs.

Hypothesis/objectives: To determine the extent to which lansoprazole, liquorice extract, and a herbal solution exhibit protective effects on colonic mucosa when administered to dogs concurrently with the NSAIDs carprofen or robenacoxib.

Animals And Methods: Thirty-five healthy beagle dogs (15 male and 20 female) aged 13-14 weeks and weighing 4.

Effects of lung exposure to carbon nanotubes on female fertility and pregnancy. A study in mice.

We studied the effects of preconceptional exposure to multiwalled carbon nanotubes (MWCNTs): mature, female C57BL/6J mice were intratracheally instilled with 67μg NM-400 MWCNT, and the following day co-housed with mature males, in breeding pairs. Time to delivery of the first litter, litter parameters, maternal inflammation and histopathology of lung and liver were recorded. In male offspring, locomotor activity, startle response, and daily sperm production (DSP) were assessed.

Histopathology of liver and kidneys of wild living Mallards Anas platyrhynchos and Coots Fulica atra with considerable concentrations of lead and cadmium.

Concentrations of cadmium and lead were measured in liver and kidneys of Mallard (n=60) and Coot (n=50). Free living birds were collected by hunters in years 2006-2008 in the area of fishponds near Zator in southern Poland. Age group was determined according to the appearance of the plumage (Mallards) and iris color (Coot).

Nanotitanium dioxide toxicity in mouse lung is reduced in sanding dust from paint.

Background: Little is known of how the toxicity of nanoparticles is affected by the incorporation in complex matrices. We compared the toxic effects of the titanium dioxide nanoparticle UV-Titan L181 (NanoTiO2), pure or embedded in a paint matrix. We also compared the effects of the same paint with and without NanoTiO2.

Veterinary pathology trends in the light of The European Society of Veterinary Pathology Congresses in 1997-2009.

This paper presents the main trends in the activity of veterinary pathologists in the context of their oral presentations, short speeches and posters during annual congresses of the European Society of Veterinary Pathology (ESVP) in the years 1997-2009. During the thirteen analyzed congresses, 2668 presentations were prepared, including 72 plenary lectures, 946 short oral presentations and 1489 posters. Based on the analysis, organ pathology (779 presentations) was the most popular branch of pathology.

Seasonal patterns of the bacterioplankton community composition in a lake threatened by a pesticide disposal site.

Unlabelled: BACKGROUND AIM AND SCOPE: The objective of the study was to determine the effects of ca. 35 years of pesticide contamination (pesticide dump-PD) of Lake Szeląg Wielki (located in the north-eastern Poland) on changes in the microbial communities of aquatic ecosystems. In the years 2008-2009, analyses were carried out for seasonal changes in the quantity and composition of bacterioplankton in the lake examined, which is of high significance to the tourism and fishing industries and is located in the vicinity of an area subjected to reclamation after a pesticide dump.

Ultrastructural features of supraspinal muscles in rabbits after long-term transcutaneous lateral electrical surface stimulation (LESS).

Lateral electrical surface stimulation is one of methods used in the therapy of the progressive form of idiopathic scoliosis (IS) in children and youth. However, there are data suggesting that this method may lead to serious adverse side effects, when used for a too long period of time per day. To clarify this issue, the present study was aimed at disclosing possible changes in the ultrastructural appearance of rabbit supraspinal muscles undergoing long-term stimulation (9 h per day, 3 months), an animal model successfully used to mimic the situation in humans.

Pathomorphological pattern of paravertebral muscles of rabbits after long-term experimental electrostimulation.

The objective of this study was to identify the histopathological features of paravertebral muscles after long-term Lateral Electrical Surface Stimulation (LESS). LESS has been applied for the treatment of idiopathic scoliosis in children and adolescents. Former studies reported the negative effect on the mental state of treated patients, as well as functional disturbances of organs, endocrine glands, and muscle metabolism.