1. Development and evaluation of an improved offline aerosol mass spectrometry techniqueChristina Vasilakopoulou, Kalliopi Florou, Christos Kaltsonoudis, Iasonas Stavroulas, Nikolaos Mihalopoulos, Spyros N. Pandis, 2023, original scientific article Abstract: Abstract. The offline aerosol mass spectrometry technique is
a useful tool for the source apportionment of organic aerosol (OA) in areas
and periods during which an aerosol mass spectrometer (AMS) is not available. However, the technique is
based on the extraction of aerosol samples in water, while several
atmospheric OA components are partially or fully insoluble in water. In this work an improved offline technique was developed and evaluated in an effort to capture most of the partially soluble and insoluble organic aerosol material, reducing significantly the uncertainty of the corresponding source
apportionment. A major advantage of the proposed approach is that no
corrections are needed for the offline analysis to account for the limited
water solubility of some OA components. The improved offline AMS analysis
was tested in three campaigns: two during winter and one during summer.
Collocated online AMS measurements were performed for the evaluation of the offline method. Source apportionment analysis was performed separately for the online and the offline measurements using positive matrix
factorization (PMF). The PMF results showed that the fractional contribution of each factor to the total OA differed between the online and the offline PMF results by less than 15 %. The differences in the AMS spectra of the
factors of the two approaches could be significant, suggesting that the use
of factor profiles from the literature in the offline analysis may lead to
complications. Part of the good agreement between the online and the
offline PMF results is due to the ability of the improved offline AMS
technique to capture a bigger part of the OA, including insoluble organic
material. This was evident by the significant fraction of submicrometer
suspended insoluble particles present in the water extract and by the
reduced insoluble material on the filters after the extraction process. More than half of the elemental carbon (EC) was on average missing from the
filters after the water extraction. Significant EC concentrations were
measured in the produced aerosol that was used as input to the AMS during
the offline analysis.
Keywords: organic aerosol, receptor modeling, offline PMF, Greece
Published in RUNG: 10.05.2024; Views: 112; Downloads: 2
 Link to file
This document has many files! More... |
2. Source apportionment of fine and ultrafine particle number concentrations in a major city of the Eastern MediterraneanPanayiotis Kalkavouras, Georgios Grivas, Iasonas Stavroulas, Kalliopi Petrinoli, Aikaterini Bougiatioti, Eleni Liakakou, Evangelos Gerasopoulos, Nikolaos Mihalopoulos, 2024, original scientific article Keywords: UFP, PNSD, receptor modelling, lockdown, Athens
Published in RUNG: 10.05.2024; Views: 113; Downloads: 0
This document has many files! More... |
3. A DNA-nanoassembly-based approach to map membrane protein nanoenvironmentsElena Ambrosetti, Giulio Bernardinelli, Ian Hoffecker, Leonard Hartmanis, Georges Kiriako, Ario De Marco, Rickard Sandberg, Bjorn Hogberg, Ana Teixeira, 2020, original scientific article Keywords: cell receptor, DNA nanostructures, cell membrane nanoenvironment
Published in RUNG: 05.11.2020; Views: 3204; Downloads: 0
This document has many files! More... |
4. Identification of New DR5 Agonistic Nanobodies and Generation of Multivalent Nanobody Constructs for Cancer TreatmentGolnaz Sadeghnezhad, Ema Romao, Robert Alvin Bernedo-Navarro, Sam Massa, Khosro Khajeh, Serge Muyldermans, Sadegh Hassania, 2019, original scientific article Keywords: death receptor 5, nanobody, TRAIL, cancer therapy, apoptosis
Published in RUNG: 01.10.2019; Views: 3106; Downloads: 0
This document has many files! More... |
5. POLYMORPHISMS IN GENES FOR ENDOTHELIN 1, ENDOTHELIN RECEPTORS AND NITRIC OXIDE SYNTHASE 3 IN PATIENTS WITH DIABETIC RETINOPATHY AND DIABETES MELLITUS TYPE 2 : DISSERTATIONDejan Bregar, 2018, doctoral dissertation Abstract: The major causes of Diabetes Mellitus Type 2 (T2DM) are multi-factorial consequences of complex interactions between environmental, social and genetic factors. We investigated the genetic risk factors in Slovene patients with T2DM on a model of microvascular complication – Diabetic Retinopathy (DR).
Retrospective case-control study includes a T2DM Slovene population with clinical risk factors for T2DM and DR. Only some of the candidate genes with selected single nucleotid polymorphisms (SNPs) were included: (EDN1 (rs5370, rs3087459, rs1476046), EDNRA (rs5335, rs1801708), EDNRB (rs10507875, rs4885493), NOS3 (rs869109213).
By genotyping with either real-time polymerase chain reaction or standard polymerase chain reaction (PCR) we successfully identified the contribution of variable number of tandem repeats rs869109213 in DR progression (Proliferative Diabetic Retinopathy (PDR)) in Slovene patients with T2DM. The joint effect of individual genotypes of rs10507875 in EDNRB and rs869109213 in NOS3 on DR onset (DR) and DR progression (PDR) was demonstrated as well. The joint effect of the two polymorphisms on DR onset (DR) and DR progression (PDR) was greater than the individual effect of each polymorphism separately in the analyzed genetic models.
Despite genetic research contributions in DR, linkage studies, and Genome-wide association studies the identification of susceptible loci through candidate gene approaches still remains in its early stages. The frequent approach with an ultimate focus on SNP associations with phenotype is likely to underestimate the roles of genetics in human diseases by disregarding not only the joint effect of multiple loci but the complex interaction network between them. By identifying polymorphisms in genetic disorders in a more systematic way, we will be able to deepen our understanding of the regulatory mechanisms and disease etiology which should lead to a more effective development of mechanism-based therapies as well.
Keywords: endothelin 1, EDN1, endothelin receptor A, EDNRA, endothelin receptor B, EDNRB, nitric oxide synthase 3, NOS3, diabetic retinopathy, DR, diabetes mellitus type 2, T2DM, polymorphism, SNP, genetic model
Published in RUNG: 07.09.2018; Views: 3659; Downloads: 179
 Full text (3,06 MB) |
6. Diagnostic and prognostic markers in canine inflammatory and neoplastic head and neck conditions : dissertationAna Rejec, 2015, doctoral dissertation Abstract: Several different types of conditions with inflammatory and neoplastic background affect the anatomical localities of the head and neck in a dog. It is a well-recognized fact that these conditions affect the quality of life, as they are associated with various degree of regional dysfunction, have systemic effects and can be direct or indirect cause of death. Unfortunately, many dogs with both inflammatory and neoplastic head and neck conditions are presented at an advanced stage of the disease which can have significant impact on treatment strategies. The identification of biomarkers is advisable to enhance effective staging, grading and prognostication, which will in turn more accurately direct recommendations for therapy.
These biomarkers can theoretically help to distinguish between inflammatory and neoplastic conditions, justify the management of patients more accurately and potentially predict the prognosis and the survival of patients.
It was our interest to investigate the diagnostic and prognostic value of complete blood count parameters and indices in dogs with head and neck conditions of inflammatory and neoplastic origin, regulatory T cells in dogs with periodontal disease, immunohistochemical (Ki-67 and VEGFR-2) and histopathological biomarkers in dogs with inflammatory and neoplastic head and neck conditions and to evaluate the effectiveness of an accelerated radiotherapy protocol for the treatment of advanced canine HNSCC.
We have proved that the parameters investigated might serve as important supportive diagnostic and/or prognostic biomarkers which might help to improve the treatment strategies of both inflammatory and neoplastic head and neck conditions in dogs and that the accelerated chemoradiotherapy protocol represents an effective alternative treatment option for dogs with advanced HNSCC.
Keywords: biomarkers, dogs, periodontal disease, regulatory T cells, head and neck tumours, complete blood count, radiotherapy, vascular endothelial growth factor receptor 2
Published in RUNG: 26.11.2015; Views: 6098; Downloads: 121
Full text (59,54 MB) |
7. Targeting the Wilms tumor antigen 1 by TCR gene transfer : TCR variants improve tetramer binding but not the function of gene modified human T cellsM. Cesco-Gaspere, Emma Morris, Hans J. Stauss, D. P. Hart, S-A Xue, S. Thomas, Esther San José, Vivian Wong, Reno Debets, Balbino Alarcon, 2007, original scientific article Keywords: T-cell receptor, Wilms tumor, gene therapy
Published in RUNG: 25.04.2014; Views: 5602; Downloads: 36
Link to full text |
