| 1. |
- Aresh, Bejan, 1984-, et al.
(författare)
-
Characterization of preproenkephalin expressing neurons in the nervous system using a transgenic line
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Here we have constructed a Cre line to target preproenkephalin expressing cells (Penk-Cre) using a BAC cloning strategy. By crossing our Penk-Cre line with the tdTomato reporter, tdTomato;Penk-Cre expressing cells could be visualized. Penk-Cre was expressed throughout the dorsal spinal cord, where approximately 50% of the neurons were residing within lamina III. Furthermore, single-cell analysis of spinal Penk-Cre expressing cells showed that 41% was positive for Penk mRNA and that a majority (94%) of the population expressed Vglut2 mRNA. Immunohistochemical analysis showed that only 7% and 13% expressed the inhibitory markers Viaat-egfp and Pax2, respectively, hence identifying spinal Penk-Cre expressing neurons as mainly excitatory. The expression of Penk-Cre in the brain was extensive, including dense expression in the striatum, nucleus accumbens and several amygdaloid nuclei. Furthermore, Penk-Cre expression was also shown in insular cortex, cingulated cortex, primary and secondary somatosensory cortices and the trigeminal nuclei. The Penk-Cre line represents a useful genetic tool for future analysis of PENK expressing neurons in the nervous system.
|
|
| 2. |
- McCarrick, Sarah, et al.
(författare)
-
High variability in toxicity of welding fume nanoparticles from stainless steel in lung cells and reporter cell lines : the role of particle reactivity and solubility
- 2019
-
Ingår i: Nanotoxicology. - : TAYLOR & FRANCIS LTD. - 1743-5390 .- 1743-5404.
-
Tidskriftsartikel (refereegranskat)abstract
- Millions of people in the world perform welding as their primary occupation resulting in exposure to metal-containing nanoparticles in the fumes generated. Even though health effects including airway diseases are well-known, there is currently a lack of studies investigating how different welding set-ups and conditions affect the toxicity of generated nanoparticles of the welding fume. The aim of this study was to investigate the toxicity of nine types of welding fume particles generated via active gas shielded metal arc welding (GMAW) of chromium-containing stainless steel under different conditions and, furthermore, to correlate the toxicity to the particle characteristics. Toxicological endpoints investigated were generation of reactive oxygen species (ROS), cytotoxicity, genotoxicity and activation of ToxTracker reporter cell lines. The results clearly underline that the choice of filler material has a large influence on the toxic potential. Fume particles generated by welding with the tested flux-cored wire (FCW) were found to be more cytotoxic compared to particles generated by welding with solid wire or metal-cored wire (MCW). FCW fume particles were also the most potent in causing ROS and DNA damage and they furthermore activated reporters related to DNA double- strand breaks and p53 signaling. Interestingly, the FCW fume particles were the most soluble in PBS, releasing more chromium in the hexavalent form and manganese compared to the other fumes. These results emphasize the importance of solubility of different metal constituents of the fume particles, rather than the total metal content, for their acute toxic potential.
|
|
