scholarly journals Metal exposure from additive manufacturing and its effect on the nasal lavage fluid proteome - a pilot study

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256746
Author(s):  
Maria Assenhöj ◽  
Liam J. Ward ◽  
Bijar Ghafouri ◽  
Pål Graff ◽  
Stefan A. Ljunggren
Keyword(s):  
Additive Manufacturing ◽  
Lavage Fluid ◽  
Nasal Lavage ◽  
Metal Exposure ◽  
Preventive Interventions ◽  
Protein Markers ◽  
Upper Airways ◽  
Occupational Setting ◽  
Nasal Lavage Fluid ◽  
Traditional Manufacturing

The use of metal additive manufacturing (AM) is steadily increasing and is an emerging concern regarding occupational exposure. In this study, non-invasive sampled nasal lavage fluid (NLF) from the upper airways was collected from metal AM operators at the beginning and end of a workweek during two consecutive years with preventive interventions in the occupational setting in-between (n = 5 year 1, n = 9 year 2). During year one, NLF was also collected from welders (n = 6) from the same company to get a comparison with a traditional manufacturing technique with known exposure and health risks. The samples were investigated using untargeted proteomics, as well as using multi-immunoassay to analyze a panel of 71 inflammatory protein markers. NLF in AM operators from year 1 showed decreased levels of Immunoglobulin J and WAP four-disulfide core domain protein 2 and increased levels of Golgi membrane protein 1, Uteroglobin and Protein S100-A6 at the end of the workweek. At year two, after preventive interventions, there were no significant differences at the end of the workweek. In welders, Annexin A1 and Protein S100-A6 were increased at the end of the workweek. The analysis of 71 inflammatory biomarkers showed no significant differences between the beginning and the end of workweek year 1 in AM operators. We identified several proteins of interest in the AM operators that could serve as possible markers for exposure in future studies with a larger cohort for validation.

scholarly journals The Immuno-Modulatory Activities of Pentaherbs Formula on Ovalbumin-Induced Allergic Rhinitis Mice via the Activation of Th1 and Treg Cells and Inhibition of Th2 and Th17 Cells

Molecules ◽  
2021 ◽  
Vol 27 (1) ◽  
pp. 239
Author(s):  
Peiting Li ◽  
Miranda Sin-Man Tsang ◽  
Lea Ling-Yu Kan ◽  
Tianheng Hou ◽  
Sharon Sze-Man Hon ◽  
...  
Keyword(s):  
Allergic Rhinitis ◽  
T Cell ◽  
Inflammatory Mediators ◽  
Th17 Cells ◽  
Lavage Fluid ◽  
Nasal Lavage ◽  
Nasal Epithelium ◽  
Tnf Α ◽  
Nasal Lavage Fluid ◽  
Sinonasal Mucosa

Allergic rhinitis (AR) is a highly prevalent allergic disease induced by immunoglobulin (Ig) E-mediated hypersensitivity reaction at the nasal epithelium against inhaled allergens. Previous studies have demonstrated that Pentaherbs formula (PHF), a modified herbal formula comprising five herbal medicines (Flos Lonicerae, Herba Menthae, Cortex Phellodendri, Cortex Moutan and Rhizoma Atractylodis), could suppress various immune effector cells to exert anti-inflammatory and anti-allergic effects in allergic asthma and atopic dermatitis. The present study aimed to further determine the anti-inflammatory activities of PHF in an ovalbumin (OVA)-induced AR BALB/c mouse model. Nasal symptoms such as sneezing and nose rubbing were recorded and the serum total IgE and OVA-specific IgG1, as well as interleukin (IL)-4, IL-5, IL-10, IL-13, chemokines CXCL9 CXCL10, and tumor necrosis factor (TNF)-α concentrations in nasal lavage fluid (NALF) were measured during different treatments. Effects of PHF on the expression of inflammatory mediators in the sinonasal mucosa were quantified using real-time QPCR. PHF was found to suppress allergic symptoms, infiltration of inflammatory cells, and hyperplasia of goblet cells in the nasal epithelium of the OVA-induced AR mice. PHF could reduce OVA-specific IgG1 level in serum, and TNF-α and IL-10 in nasal lavage fluid (NALF), significantly up-regulate the splenic regulatory T (Treg) cell level, increase the Type 1 helper T cell (Th1)/Type 2 helper T cell (Th2) ratio, and reduce the Th17 cells (all p < 0.05). PHF could also alleviate in situ inflammation in sinonasal mucosa of OVA-induced AR mice. In conclusion, oral treatment of PHF showed immuno-modulatory activities in the OVA-induced AR mice by regulating the splenic T cell population to suppress the nasal allergy symptoms and modulating inflammatory mediators, implicating that PHF could be a therapeutic strategy for allergic rhinitis.

Cysteinyl-leukotrienes in nasal lavage fluid in children with asthma

2008 ◽  
Vol 19 (3) ◽  
pp. 227-232 ◽  
Author(s):  
Florian Singer ◽  
Friedrich Horak ◽  
Waltraud Friesenbichler ◽  
Barbara Schneider ◽  
Zsolt Szépfalusi ◽  
...  
Keyword(s):  
Lavage Fluid ◽  
Nasal Lavage ◽  
Cysteinyl Leukotrienes ◽  
Children With Asthma ◽  
Nasal Lavage Fluid

scholarly journals Honeysuckle extract relieves ovalbumin-induced allergic rhinitis by inhibiting AR-induced inflammation and autoimmunity

2019 ◽  
Vol 39 (7) ◽  
Author(s):  
Bin Lin ◽  
Bijuan Cai ◽  
Huige Wang
Keyword(s):  
Allergic Rhinitis ◽  
Nasal Mucosa ◽  
Inflammatory Reaction ◽  
Lavage Fluid ◽  
Nasal Lavage ◽  
Autoimmune Response ◽  
Enzyme Linked Immunosorbent Assay ◽  
Protein Levels ◽  
Nasal Lavage Fluid ◽  
Ifn Γ

Abstract Honeysuckle has antiviral, antioxidative and anti-inflammatory properties. Allergic rhinitis (AR) is induced by immunoglobulin E (IgE)-mediated inflammatory reaction. Our study investigates whether honeysuckle extract (HE) has therapeutic effect on AR. An AR model of mice was established by ovalbumin (OVA). Hematoxylin–Eosin staining was used to assess nasal mucosa damage. Enzyme-linked immunosorbent assay (ELISA) was performed to determine serum histamine, IgE and interleukin (IL)-2, IL-4, IL-17 and interferon-γ (IFN-γ) from nasal lavage fluid. Western blot was carried out to analyze the protein level from nasal mucosa tissue. We found that HE not only decreased nasal rubbing and sneezing in AR mice, but also reduced AR-induced damage to nasal mucosa. Moreover, HE lowered the levels of serum IgE and histamine and inhibited IL-4 and IL-17 levels from AR mice but raised IL-2 and IFN-γ levels in AR-induced nasal lavage fluid. Our results also showed that HE elevated the protein levels of forkhead box P3 (Foxp3) and T-box transcription factor (T-bet) in AR-induced nasal mucosa tissue, whereas it inhibited signal transducer and activator of transcription (STAT) 3 and GATA binding protein 3 (GATA-3) protein levels. By regulating AR-induced inflammatory reaction and autoimmune response, HE also relieved OVA-induced AR. Thus, HE could be used as a potential drug to treat AR.

Methylhexahydrophthalic anhydride adducted albumin tryptic peptides in nasal lavage fluid

2009 ◽  
Vol 21 (12) ◽  
pp. 1013-1020 ◽  
Author(s):  
Marina C. Jeppsson ◽  
Christian H. Lindh ◽  
Monica H. Kristiansson ◽  
Jörn Nielsen ◽  
Bo A. G. Jönsson
Keyword(s):  
Lavage Fluid ◽  
Nasal Lavage ◽  
Tryptic Peptides ◽  
Nasal Lavage Fluid
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