26 results on '"Aarstad HJ"'
Search Results
2. IL-6 production from monocytes is correlated with worsened survival in Head and Neck Squamous Cell Carcinomas
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Kross, KW, Heimdal, JH, Olsnes, C, Olofsson, J, Aarstad, HJ, Kross, KW, Heimdal, JH, Olsnes, C, Olofsson, J, and Aarstad, HJ
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- 2007
3. Stimulated monocyte IL-6 secretion predicts survival of patients with head and neck squamous cell carcinoma.
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Heimdal JH, Kross K, Klementsen B, Olofsson J, Aarstad HJ, Heimdal, John-Helge, Kross, Kenneth, Klementsen, Beate, Olofsson, Jan, and Aarstad, Hans Jørgen
- Abstract
Background: This study was performed in order to determine whether monocyte in vitro function is associated with presence, stage and prognosis of head and neck squamous cell carcinoma (HNSCC) disease.Methods: Prospective study describing outcome, after at least five years observation, of patients treated for HNSCC disease in relation to their monocyte function. Sixty-five patients with newly diagnosed HNSCC and eighteen control patients were studied. Monocyte responsiveness was assessed by measuring levels of monocyte in vitro interleukin (IL)-6 and monocyte chemotactic peptide (MCP)-1 secretion after 24 hours of endotoxin stimulation in cultures supplied either with 20% autologous serum (AS) or serum free medium (SFM). Survival, and if relevant, cause of death, was determined at least 5 years following primary diagnosis.Results: All patients, as a group, had higher in vitro monocyte responsiveness in terms of IL-6 (AS) (t = 2.03; p < 0.05) and MCP-1 (SFM) (t = 2.49; p < 0.05) compared to controls. Increased in vitro monocyte IL-6 endotoxin responsiveness under the SFM condition was associated with decreased survival rate (Hazard ratio (HR) = 2.27; Confidence interval (CI) = 1.05-4.88; p < 0.05). The predictive value of monocyte responsiveness, as measured by IL-6, was also retained when adjusted for age, gender and disease stage of patients (HR = 2.67; CI = 1.03-6.92; p < 0.05). With respect to MCP-1, low endotoxin-stimulated responsiveness (AS), analysed by Kaplan-Meier method, predicted decreased survival (chi = 4.0; p < 0.05).Conclusion: In HNSCC patients, changed monocyte in vitro response to endotoxin, as measured by increased IL-6 (SFM) and decreased MCP-1 (AS) responsiveness, are negative prognostic factors. [ABSTRACT FROM AUTHOR]- Published
- 2008
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4. Periodontitis and dental quality of life predict long-term survival in head and neck cancer.
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Farran M, Neppelberg E, Løes S, Aarstad AKH, Moe SE, and Aarstad HJ
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- Humans, Male, Female, Middle Aged, Aged, Radiography, Panoramic, Prognosis, Adult, Oral Health, Survival Rate, Quality of Life, Head and Neck Neoplasms mortality, Head and Neck Neoplasms psychology, Head and Neck Neoplasms complications, Alveolar Bone Loss diagnostic imaging, Periodontitis complications, Carcinoma, Squamous Cell mortality, Carcinoma, Squamous Cell pathology, Carcinoma, Squamous Cell psychology
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Background: Our aim was to investigate oral health in newly diagnosed head and neck squamous cell carcinoma (HNSCC) patients in relation to long-term survival. We assessed whether the level of alveolar bone loss due to periodontitis at diagnosis, measured from orthopantomogram (OPG), and reported dental health-related quality of life (HRQoL) scores obtained at diagnosis contain prognostic information for HNSCC patients., Methods: A total of 79 patients from a consecutive cohort of 106 diagnosed with HNSCC between November 2002 and June 2005 were included. All patients reported dental HRQoL, OPG-determined alveolar bone loss were measured in 79 patients at diagnosis. Reduced alveolar bone loss (≥ 4 mm) from cement-enamel junction on at least two molars or premolars registered both horizontally and vertically served as indicator of periodontal disease., Results: With alveolar bone loss, we determined increased mortality by univariate analysis (RR = 2.28, CI: 1.22-4.28, p = 0.01) and a strong trend by multivariate analyses adjusted for standard clinical information (RR = 1.95, CI: 0.98-3.87, p = 0.056). Reported lowered dental HRQoL scores predicted long-term survival in both univariate (RR = 3.58, CI: 1.99-6.45, p < 0.001) and multivariate adjusted for standard clinical information (RR = 2.17, CI: 1.17-4.01, p = 0.014). When analyzed with Cox regression, including alveolar bone loss and dental HRQoL, both factors, adjusted by clinical variables, were significant predictors of long-term survival: dental HRQoL (p = 0.007) and present alveolar bone loss (p = 0.034). Non-HNSCC disease-specific long-term survival predicted was also predicted when alveolar bone loss and dental HRQoL were analyzed simultaneously and adjusted for standard clinical information., Conclusions: The degree of alveolar bone loss, as determined by OPG, and dental HRQoL both obtained at the time of HNSCC diagnosis, predicted long-term survival. When analyzed simultaneously, both factors remained significant in both univariate and multivariate analyses, adjusted by pertinent clinical variables, highlighting their unique prognostic value., Competing Interests: Declarations Ethics approval and consent to participate The study was approved by the Norwegian regional ethics committee (REK VEST 2011 − 125) and performed in accordance with the Declaration of Helsinki. Informed consent to participate was obtained from all the participants in the study. Consent for publication Not applicable. Competing interests The authors declare no competing interests., (© 2024. The Author(s).)
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- 2024
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5. Development of a high dimensional imaging mass cytometry panel to investigate spatial organization of tissue microenvironment in formalin-fixed archival clinical tissues.
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Tornaas S, Kleftogiannis D, Fromreide S, Smeland HY, Aarstad HJ, Vintermyr OK, Akslen LA, Costea DE, and Dongre HN
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To decipher the interactions between various components of the tumor microenvironment (TME) and tumor cells in a preserved spatial context, a multiparametric approach is essential. In this pursuit, imaging mass cytometry (IMC) emerges as a valuable tool, capable of concurrently analyzing up to 40 parameters at subcellular resolution. In this study, a set of antibodies was selected to spatially resolve multiple cell types and TME elements, including a comprehensive panel targeted at dissecting the heterogeneity of cancer-associated fibroblasts (CAF), a pivotal TME component. This antibody panel was standardized and optimized using formalin-fixed paraffin-embedded tissue (FFPE) samples from different organs/lesions known to express the markers of interest. The final composition of the antibody panel was determined based on the performance of conjugated antibodies in both immunohistochemistry (IHC) and IMC. Tissue images were segmented employing the Steinbock framework. Unsupervised clustering of single-cell data was carried out using a bioinformatics pipeline developed in R program. This paper provides a detailed description of the staining procedure and analysis workflow. Subsequently, the panel underwent validation on clinical FFPE samples from head and neck squamous cell carcinoma (HNSCC). The panel and bioinformatics pipeline established here proved to be robust in characterizing different TME components of HNSCC while maintaining a high degree of spatial detail. The platform we describe shows promise for understanding the clinical implications of TMA heterogeneity in large patient cohorts with FFPE tissues available in diagnostic biobanks worldwide., Competing Interests: The authors declare the following financial interests/personal relationships which may be considered as potential competing interests:Harsh Nitin Dongre reports financial support was provided by 10.13039/501100005416Research Council of Norway, Norway. Daniela Elena Costea reports financial support was provided by Western Norway Regional Health Authority, Norway. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors.)
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- 2024
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6. Plasma IL-1 and IL-6 Family Cytokines with Soluble Receptor Levels at Diagnosis in Head and Neck Squamous Cell Carcinoma: High Levels Predict Decreased Five-Year Disease-Specific and Overall Survival.
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Aarstad HH, Moe SEE, Lybak S, Bruserud Ø, Tvedt THA, and Aarstad HJ
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Activation of the acute-phase cascade (APC) has been correlated with outcomes in various cancers, including head and neck squamous cell carcinoma (HNSCC). Primary drivers of the APC are the cytokines within the interleukin-6 (IL-6) and IL-1 families. Plasma levels of IL-6 family cytokines/soluble receptors (IL-6, IL-27, IL-31, OSM, CNTF, soluble (s-)gp130, s-IL-6Rα) and IL-1 family members (IL-1RA, s-IL-33Rα) were determined at diagnosis for 87 human papillomavirus (HPV)-negative (-) HNSCC patients. We then studied the 5-year Disease-Specific Survival (DSS) and Overall Survival (OS). Increased plasma levels of IL-6 ( p < 0.001/ p < 0.001) (DSS/OS), IL-31 ( p = 0.044/ p = 0.07), IL-1RA ( p = 0.004/ p = 0.035), soluble (s)-IL-6Rα p = 0.022/ p = 0.035), and s-gp130 ( p = 0.007/ p = 0.003) at diagnosis were predictors of both OS and DSS from HPV(-) HNSCC patients. The cytokine DSS/OS predictions were associated with TNM stage and smoking history, whereas the soluble receptors IL-6Rα, gp130, and IL33Rα more uniquely predicted DSS/OS. Clinically, IL-6 levels above 2.5 pg/mL yielded 75% specificity and 70% sensitivity for DSS. In conclusion, high plasma levels of IL-6, IL-31, and IL-1RA, as well as the soluble receptors IL-6Rα, gp130, and IL33Rα, predicted clinical outcome. This shows their potential as candidates for both general therapy and immune therapy stratification, as well as being future platforms for the development of new immunotherapy.
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- 2024
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7. The TP53 Codon 72 Arginine Polymorphism Is Found with Increased TP53 Somatic Mutations in HPV(-) and in an Increased Percentage among HPV(+) Norwegian HNSCC Patients.
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Moe SE, Erland FA, Fromreide S, Lybak S, Brydoy M, Dongre HN, Dhayalan SM, Costea DE, Vintermyr OK, and Aarstad HJ
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Background: Somatic TP53 mutations are frequent in head and neck squamous cell carcinoma (HNSCC) and are important pathogenic factors., Objective: To study TP53 mutations relative to the presence of human papillomavirus (HPV) in tumors in HNSCC patients., Methods: Using a custom-made next-generation sequencing (NGS) panel on formalin-fixed, paraffin-embedded tumor tissue, we analyzed somatic TP53 mutations and the TP53 single-nucleotide polymorphism (SNP) codon 72 (P72R; rs1042522) (proline → arginine) from 104 patients with HNSCC., Results: Only 2 of 44 patients with HPV-positive (HPV(+)) HNSCC had a TP53 somatic mutation, as opposed to 42/60 HPV-negative (HPV(-)) HNSCC patients ( p < 0.001). Forty-five different TP53 somatic mutations were detected. Furthermore, in HPV(-) patients, we determined an 80% prevalence of somatic TP53 mutations in the TP53 R72 polymorphism cohort versus 40% in the TP53 P72 cohort ( p = 0.001). A higher percentage of patients with oral cavity SCC had TP53 mutations than HPV(-) oropharyngeal (OP) SCC patients ( p = 0.012). Furthermore, 39/44 HPV(+) tumor patients harbored the TP53 R72 polymorphism in contrast to 42/60 patients in the HPV(-) group ( p = 0.024)., Conclusions: Our observations show that TP53 R72 polymorphism is associated with a tumor being HPV(+). We also report a higher percentage of somatic TP53 mutations with R72 than P72 in HPV(-) HNSCC patients.
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- 2023
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8. Tumor HPV Status, Level of Regulatory T Cells and Macrophage Infiltration Predict up to 20-Year Non-Disease-Specific Survival in Oropharynx Squamous Cell Carcinoma Patients.
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Haave H, Ljokjel B, Lybak H, Moe SE, Berge JE, Vintermyr OK, Helgeland L, and Aarstad HJ
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Oropharynx squamous cell carcinoma (OPSCC) is of special interest because human papilloma virus (HPV) and/or smoking cause this disease. Influxes of inflammatory cells into such tumors are known to vary with prognoses., Aims: To study whether the density of tumor-infiltrating T lymphocytes and tumor-infiltrating macrophages predicted general 20-year overall survival (OS), as well as OS with only disease-specific survival (DSS) patients included., Methods: Biopsies from patients treated for OPSCC ( n = 180) were stained by immunohistochemistry and the tumor cell macrophage (CD68), pan T lymphocytes (CD3), and regulatory T lymphocytes (Foxp3) densities were determined. The HE-determined percentage of matured tumor cells and the rate of invasion were calculated, and stromal desmoplasia were performed. Tumor HPV presence was studied by PCR. Twenty-year OS and five-year DSS patients were determined., Results: Tumor HPV status strongly predicted survival. High tumor infiltration of CD3, Foxp3 and CD68-positive cells predicted better twenty-year OS, with and without HPV stratification. Foxp3 and CD68 levels predicted OS, and 20-year among DSS patients, primarily among HPV(+) patients. Tumor HE-derived variables did not predict such survival., Conclusions: Tumor HPV status, level of Foxp3 tumor-infiltrating lymphocytes and CD68 tumor-infiltrating macrophages predicted up to 20-year OS of both all patients and disease-specific survived patients.
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- 2022
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9. The Romberg sign, unilateral vestibulopathy, cerebrovascular risk factors, and long-term mortality in dizzy patients.
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Berge JE, Goplen FK, Aarstad HJ, Storhaug TA, and Nordahl SHG
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Objectives: Describe the relationship between unsteadiness, canal paresis, cerebrovascular risk factors, and long-term mortality in patients examined for dizziness of suspected vestibular origin., Study Design: Observational cohort with prospective collection of survival data., Setting: University clinic neurotological unit., Patients: Consecutive patients aged 18-75 years examined in the period 1992-2004 for dizziness of suspected vestibular origin., Outcome Measures: Overall survival. Standardized mortality ratio (SMR). Factors: Unsteadiness, canal paresis, age, sex, patient-reported diabetes, hypertension, heart disease, stroke, or TIA/minor stroke. Patients were classified as steady or unsteady based on static posturography at baseline compared to normative values., Results: The study included 1,561 patients with mean age 48 years and 60 % females. Mean follow-up was 22 years. Unsteadiness was associated with higher age, heart disease, diabetes, hypertension, and cerebrovascular dizziness. There were 336 deaths over 31,335 person-years (SMR 0.96; 95 % confidence interval: 0.86-1.07). Canal paresis was not related to unsteadiness (chi square: p = 0.46) or to mortality (unadjusted Cox hazard ratio: 1.04, 95% CI: 0.80-1.34). Unsteadiness was an independent predictor of mortality (adjusted Cox hazard ratio: 1.44, 95% CI: 1.14-1.82)., Conclusions: Unsteadiness measured by static posturography is associated with higher age, known cerebrovascular risk factors, and with increased long-term mortality, but not with canal paresis in patients evaluated for dizziness. The study highlights the importance of evaluating patients with conspicuous postural instability for non-vestibular causes., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Berge, Goplen, Aarstad, Storhaug and Nordahl.)
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- 2022
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10. Tumor Infiltration Levels of CD3, Foxp3 (+) Lymphocytes and CD68 Macrophages at Diagnosis Predict 5-Year Disease-Specific Survival in Patients with Oropharynx Squamous Cell Carcinoma.
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Ljokjel B, Haave H, Lybak S, Vintermyr OK, Helgeland L, and Aarstad HJ
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Head and neck cancer (HNC) is the sixth most common cancer worldwide. Oropharyngeal (OP) cancers are of special interest because of possible underlying HPV infection which is tied to prognosis. Influxes of inflammatory cells into tumors may vary with prognoses. We wanted to study whether the number of tumor-infiltrating lymphocytes (TIL) and tumor-associated macrophages (TAM) in tumors correlated to HPV status and predicted 5-year disease-specific survival (DSS). Formalin-fixed paraffin-embedded (FFPE) biopsies cut sections from 170 patients treated for OP cancer were stained by immunohistochemistry and evaluated for the number of CD68 (+) TAMs, CD3 (+), and Foxp3 (+) (T regulatory) TILs. From FFPE slides HPV by PCR and p16 by immunohistochemistry were established. From FFPE Hematoxylin-Eosin slides, levels of tumor nuclear polymorphism, tumor invasion, desmoplasia, and inflammation were determined as previously published. Levels of TIL CD3 (+) and TIL Foxp3 (+) were increased among the HPV (+) compared to the HPV (-) patients. High levels of TIL Foxp3 (+) and CD68 (+) macrophages predicted better 5-year DSS. TIL Foxp3 (+) levels predicted independent of age, gender, TNM stage, and HPV infection as well as level of stromal desmoplasia, tumor invasion, and nuclear polymorphism, but more pronounced among tumor HPV (+) than HPV (-) patients.
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- 2022
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11. Corrigendum to "The levels of IL-6 and soluble IL-33R are increased in the renal vein during surgery for clear cell renal cell carcinoma" [Cytokine 144 (2021) 155586].
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Gudbrandsdottir G, Aarstad HH, Hjelle KM, Førde K, Reisæter L, Bostad L, Aarstad HJ, and Beisland C
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- 2021
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12. Targeted Next-Generation Sequencing of Cancer-Related Genes in a Norwegian Patient Cohort With Head and Neck Squamous Cell Carcinoma Reveals Novel Actionable Mutations and Correlations With Pathological Parameters.
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Dongre HN, Haave H, Fromreide S, Erland FA, Moe SEE, Dhayalan SM, Riis RK, Sapkota D, Costea DE, Aarstad HJ, and Vintermyr OK
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Background: Targeted next-generation sequencing (NGS) is increasingly applied in clinical oncology to advance personalized treatment. Despite success in many other tumour types, use of targeted NGS panels for assisting diagnosis and treatment of head and neck squamous cell carcinomas (HNSCC) is still limited., Aim: The focus of this study was to establish a robust NGS panel targeting most frequent cancer mutations in long-term preserved formalin-fixed paraffin-embedded (FFPE) tissue samples of HNSCC from routine diagnostics., Materials and Methods: Tumour DNA obtained from archival FFPE tissue blocks of HNSCC patients treated at Haukeland University Hospital between 2003-2016 (n=111) was subjected to mutational analysis using a custom made AmpliSeq Library PLUS panel targeting 31 genes (Illumina). Associations between mutational burden and clinical and pathological parameters were investigated. Mutation and corresponding clinicopathological data from HNSCC were extracted for selected genes from the Cancer Genome Atlas (TCGA) and used for Chi-square and Kaplan-Meier analysis., Results: The threshold for sufficient number of reads was attained in 104 (93.7%) cases. Although the specific number of PCR amplified reads detected decreased, the number of NGS-annotated mutations did not significantly change with increased tissue preservation time. In HPV-negative carcinomas, mutations were detected mainly in TP53 (73.3%), FAT1 (26.7%) and FLG (16.7%) whereas in HPV-positive, the common mutations were in FLG (24.3%) FAT1 (17%) and FGFR3 (14.6%) genes. Other less common pathogenic mutations, including well reported SNPs were reproducibly identified. Presence of at least one cancer-specific mutations was found to be positively associated with an extensive desmoplastic stroma (p=0.019), and an aggressive type of invasive front (p=0.035), and negatively associated with the degree of differentiation (p=0.041). Analysis of TCGA data corroborated the association between cancer-specific mutations and tumour differentiation and survival analysis showed that tumours with at least one mutation had shorter disease-free and overall survival (p=0.005)., Conclusions: A custom made targeted NGS panel could reliably detect several specific mutations in archival samples of HNSCCs preserved up to 17 years. Using this method novel associations between mutational burden and clinical and pathological parameters were detected and actionable mutations in HPV-positive HNSCC were discovered., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2021 Dongre, Haave, Fromreide, Erland, Moe, Dhayalan, Riis, Sapkota, Costea, Aarstad and Vintermyr.)
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- 2021
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13. The levels of IL-6 and soluble IL-33R are increased in the renal vein during surgery for clear cell renal cell carcinoma.
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Gudbrandsdottir G, Aarstad HH, Hjelle KM, Førde K, Reisæter L, Bostad L, Aarstad HJ, and Beisland C
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- Aged, Carcinoma, Renal Cell metabolism, Cytokines blood, Female, Humans, Immunohistochemistry methods, Kidney Neoplasms metabolism, Male, Middle Aged, Receptors, Cytokine blood, Tumor Microenvironment physiology, Carcinoma, Renal Cell blood, Interleukin-1 Receptor-Like 1 Protein blood, Interleukin-6 blood, Kidney Neoplasms blood, Renal Veins metabolism
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Purpose: The main aim was to map serum levels of IL-1/IL-6 family cytokines and relevant receptors from serum samples taken across treatment in patients with Renal Cell Carcinoma (RCC). Additionally, we explored the possible interactions between these measurements, immunohistochemistry and intratumoral blood flow., Methods: We included 40 patients undergoing open surgery for renal tumors. Blood samples were collected before, during (taken simultaneously from a peripheral site and the renal vein (RV) before clamping) and after surgery. Samples were analyzed for IL-6, IL-27, IL-31, OSM, TNF-α, serum (s)-gp130, s-IL-6Rα, s-IL-33R, IL-1Rα and VEGF. All 35 RCC tumors were histologically subtyped as clear cell (CCRCC), papillary or chromophobe. Immunohistochemistry for the CCRCC group included expression of IL-6/IL-6R. Intratumoral blood flow was determined by calculating intratumoral contrast enhancement on preoperative computerized tomography (CT) imaging., Results: In the CCRCC patients, the intraoperative RV concentration of IL-6 was significantly higher than in both the preoperative and postoperative samples (p = 0.005 and p = 0.032, respectively). Furthermore, the intraoperative ratio showed significantly higher levels of IL-6 in the RV than in the simultaneously drawn peripheral sample. Immunohistochemistry showed general expression of IL-6 (23/24) in both tumor cells and the vasculature (20/23). Moreover, s-IL-6R was expressed in tumor cells in 23/24 studied patients. Increased blood flow in the CCRCC tumors predicted increased IL-6 levels in the RV (p < 0.001). The other cytokines and receptors showed an overall stability across the measurements. However, the intraoperative ratios of IL-33R and gp130 showed significantly higher levels in the RV., Conclusion: Serum levels of IL-6 increased during surgery. Intraoperative IL-6 and s-IL-33R values were higher in the RV compared to the periphery, suggesting secretion from the tumor or tumor microenvironment itself. Supportive of this is an almost general expression of IL-6/s-IL-6R in tumor cells and IL-6 in vasculature in the tumor microenvironment. Other studied cytokines/receptors were remarkably stable across all measurements., (Copyright © 2021 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
- Published
- 2021
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14. Importance of personality and coping expectancy on patient-reported hearing disability, quality of life and distress level: a study of patients referred to an audiology service.
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Nordvik Ø, Heggdal POL, Brännström KJ, Aarstad AK, and Aarstad HJ
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- Adult, Aged, Cross-Sectional Studies, Female, Hearing Aids, Hearing Tests, Humans, Male, Middle Aged, Norway epidemiology, Personality Inventory, Surveys and Questionnaires, Adaptation, Psychological, Hearing Loss psychology, Neuroticism, Psychological Distress, Quality of Life psychology
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Purpose: According to the World Health Organization (WHO), hearing loss (HL) affects up to 15% of the world's adult population. Coping and personality are hypothesized to underlie quality of life (QoL) and distress scores. We aimed to study the importance of personality and coping in persons with HL for self-reported hearing disability, QoL, and distress., Methods: A cross-sectional survey was carried out, including one hundred and fifty-eight adults seeking hearing aids. Pure-tone average hearing thresholds (PTA) were determined for each ear. A revised version of the Abbreviated Profile of Hearing Aid Benefit (APHAB) served as a measure of self-reported hearing disability. Further, the generic part of the European Organization for Research and Treatment (EORTC) QoL questionnaire and the General Health Questionnaire (GHQ) (distress measure) were answered. Levels of neuroticism and the Theoretically Originated Measure of the Cognitive Activation Theory of Stress (TOMCATS) coping expectancy were determined., Results: Hearing disability was determined by PTA (better ear) and level of neuroticism. Distress and QoL were determined by neuroticism and coping., Conclusion: More neuroticism was associated with worse outcome for the variables hearing disability, distress, and QoL. Helplessness and hopelessness were associated with worse hearing disability, increased distress, and lowered QoL. Patient reported hearing disability was also associated with PTA (better ear). There is a need to investigate further the associations between hearing disability and QoL to psychosocial parameters.
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- 2021
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15. Serum levels of the IL-6 family of cytokines predict prognosis in renal cell carcinoma (RCC).
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Gudbrandsdottir G, Aarstad HH, Bostad L, Hjelle KM, Aarstad HJ, Bruserud Ø, Tvedt THA, and Beisland C
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- Aged, CD3 Complex blood, Carcinoma, Renal Cell metabolism, Endothelial Cells metabolism, Female, Humans, Interleukin-27 blood, Kidney Neoplasms metabolism, Male, Middle Aged, Muscle, Smooth, Vascular metabolism, Myocytes, Smooth Muscle metabolism, Prognosis, Carcinoma, Renal Cell blood, Carcinoma, Renal Cell pathology, Interleukin-6 blood, Kidney Neoplasms blood, Kidney Neoplasms pathology
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Purpose: An improved understanding of RCC immunology should shed further light on RCC tumor biology. Our objective was to study to what extent serum levels of the IL-6 family of cytokines at diagnosis were relevant to survival., Methods: A total of 118 consecutively patients with RCC, in which the tumor was surgically removed at Haukeland University Hospital during the period from 2007 to 2010, were included. The patients were followed-up for 10 years. The morning before surgery blood was sampled and serum frozen, with levels of IL-6, IL-27, IL-31, OSM, CNTF, IL-6Rα and gp130 determined., Results: Among patients with the highest quartile of IL-6 (> 8 pg/ml) (n = 29), six of nine who had metastasis at diagnosis had such high IL-6 values. Among presumed radically treated patients, a high IL-6 and IL-27 strongly predicted recurrence. In particular, the predictions among patients with large (diameter > 7 cm) tumors were excellent regarding both IL-6 and IL-27 values. High gp130 serum levels predicted an overall survival (OS) among RCC patients with large tumors. Patients with a high IL-6 exhibited a strong expression of IL-6 in endothelial- and vascular smooth muscle cells. Moreover, the level of intra-tumoral CD3-positive cells predicted survival., Conclusions: IL-6 and IL-27 seem to play a role in RCC biology. IL-6 enables the pinpointing of metastatic condition at diagnosis, as well as together with IL-27, the predicting of survival and recurrence. Endothelial cells and vascular smooth muscle cells are both suggested as important sources of IL-6.
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- 2021
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16. Reduced grey- and white matter volumes due to unilateral hearing loss following treatment for vestibular schwannoma.
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Heggdal POL, Larsen KS, Brännström J, Aarstad HJ, and Specht K
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Objective: Previous studies of the consequences of unilateral hearing loss (UHL) on the functional-structural organization of the brain has included subjects with various degrees of UHL. We suggest that the consequences of a total loss of hearing in one ear might differ from those seen in subjects with residual hearing in the affected ear. Thus, the main aim of the present study was to compare the structural properties of auditory and non-auditory brain regions in persons with complete UHL to those of normal hearing controls. We hypothesize that the consequences of complete UHL following treatment for vestibular schwannoma will differ between ipsi- and contralateral structures, as well as between right- and left side deafness., Design: A 3T Siemens Prisma MR-scanner was used. Anatomical images were acquired using a high-resolution T1-weighted sequence. Grey- and white matter volumes were assessed using voxel-based morphometry., Study Sample: Twenty-two patients with left- or right-side unilateral hearing loss. Fifty normal hearing controls., Results: Reductions in grey- and white matter volumes were seen in cortical and sub-cortical regions, mainly in the right hemisphere including the auditory cortex, lingual gyrus, cuneus, middle temporal gyrus, occipital fusiform gyrus, middle cingulate gyrus and the superior temporal gyrus. Patients displayed reduced grey- and white matter volumes in cerebellar exterior structures ipsilateral to the tumor side., Conclusion: When compared to controls, right side hearing loss yields more widespread reduction of grey matter volume than left side hearing loss. The findings of reduced grey- and white matter volumes in auditory and non-auditory brain regions could be related to problems with speech perception in adverse listening conditions, increased listening effort and reduced quality of life reported by persons with unilateral hearing loss despite normal hearing in the unaffected ear., Competing Interests: The authors declare no conflict of interest., (© 2020 The Author(s).)
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- 2020
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17. The Acute Phase Reaction and Its Prognostic Impact in Patients with Head and Neck Squamous Cell Carcinoma: Single Biomarkers Including C-Reactive Protein Versus Biomarker Profiles.
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Aarstad HH, Moe SEE, Bruserud Ø, Lybak S, Aarstad HJ, and Tvedt THA
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C-reactive protein (CRP) has a prognostic impact in head and neck squamous cell carcinoma (HNSCC). However, the acute phase reaction involves many other proteins depending on its inducing events, including various cytokines that can function as reaction inducers. In the present study, we compared the pretreatment acute phase cytokine profile for 144 patients with potentially curative HNSCC. We investigated the systemic levels of interleukin (IL)6 family mediators (glycoprotein (gp130), IL6 receptor (R)α, IL6, IL27, IL31, oncostatin M (OSM), ciliary neurotrophic factor (CNTF)), IL1 subfamily members (IL1R antagonist (A), IL33Rα), and tumor necrosis factor (TNF)α. Patient subsets identified from this 10-mediator profile did not differ with regard to disease stage, human papilloma virus (HPV) status, CRP levels, or death cause. Increased CRP, IL6, and IL1RA levels were independent markers for HNSCC-related death in the whole patient population. Furthermore, gp130, IL6Rα, and IL31 were suggested to predict prognosis among tumor HPV-negative patients. Only IL6 predicted survival in HPV-positive patients. Finally, we did a clustering analysis of HPV-negative patients based on six acute phase mediators that showed significant or borderline association with prognosis in Kaplan-Meier analyses; three subsets could then be identified, and they differed in survival ( p < 0.001). To conclude, (i) HPV-negative and HPV-positive HNSCC patients show similar variations of their systemic acute phase profiles; (ii) the prognostic impact of single mediators differs between these two patient subsets; and (iii) for HPV-negative patients, acute phase profiling identifies three patient subsets that differ significantly in survival.
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- 2020
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18. Personality and educational level determine self-reported health-related quality-of-life and distress in patients with renal tumors awaiting radical surgery.
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Beisland E, Hauge EM, Aarstad AKH, Hjermstad MJ, Aarstad HJ, and Beisland C
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- Aged, Female, Humans, Kidney Neoplasms surgery, Male, Middle Aged, Nephrectomy, Prospective Studies, Self Report, Adaptation, Psychological, Educational Status, Kidney Neoplasms psychology, Personality, Psychological Distress, Quality of Life
- Abstract
Objective: Data on preoperative distress and health-related quality-of-life (HRQoL) is lacking for patients with newly diagnosed renal tumors. This study aims to compare HRQoL within this group with the general population and to study the relationship between distress, HRQoL, personality, coping, and patient/tumor-related factors. Materials and methods: Between January 2011 and June 2014, 153 patients (100 males/53 females), scheduled for surgery were prospectively included. Distress was determined by the General Health Questionnaire (GHQ), HRQoL by EORTC-QLQ-C30 questionnaire, personality by Eysenck Personality Inventory and coping by COPE questionnaire. HRQoL-data from an age and gender matched Norwegian reference population was used for comparison. Results: The study patients had significantly poorer HRQoL than the reference population. GHQ and HRQoL sum scores had a common variance (CV = r
2 ) of 29-35%. In regression models, the measured variables accounted for 33% of the variance for the GHQ score. Significant predictors of the measured variance were neuroticism (18%), education level (3%) and avoidant coping (2%). Similarly, the measured variables accounted for 33-44% of the variance for the HRQoL sum scores. For all HRQoL sum scores, neuroticism predicted 17-28%, while education predicted 4-11% of the measured variance. Large tumor size, comorbidity, performance status and CRP predicted 2-7% of individual sum scores. Conclusions: For both preoperative distress and HRQoL, personality traits such as neuroticism and education level were the most important predictors. Tumor-related factors and other preexisting conditions seemed to be of lesser importance. Thus, preoperatively screening of psychological factors could be helpful to identify those at risk of poor outcomes.- Published
- 2020
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19. An fMRI-study on single-sided deafness: Spectral-temporal properties and side of stimulation modulates hemispheric dominance.
- Author
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Heggdal POL, Aarstad HJ, Brännström J, Vassbotn FS, and Specht K
- Subjects
- Acoustic Stimulation, Adult, Female, Humans, Magnetic Resonance Imaging, Male, Middle Aged, Brain physiopathology, Functional Laterality physiology, Hearing Loss, Unilateral physiopathology
- Abstract
Objective: Our main aim was to investigate the blood oxygenation level dependent (BOLD) response to monaural and binaural speech- and non-speech stimuli as measured with fMRI in subjects with single-sided deafness and in normal hearing controls. We hypothesised that the response to monaural stimulation in both normal hearing subjects and persons with single-sided deafness would vary with the complexity and nature of the stimuli and the side of stimulation., Design: Patients with left- and right single-sided deafness and controls with normal hearing receiving either binaural or monaural stimuli were tested using speech and non-speech auditory stimuli in an event-related fMRI experiment., Study Sample: Twenty-two patients with single-sided deafness after treatment for vestibular schwannoma and 50 normal hearing controls., Results: Normal hearing persons receiving right side monaural stimuli activate bilateral temporal regions. Activation following left side monaural stimulation is more right lateralized. Persons with single-sided deafness respond similarly to controls to monaural stimulation. Persons with right side single-sided deafness show activation of frontal cortical regions not seen in persons with left side single-sided deafness following speech stimuli. This is possibly related to increased effort and more frequently reported problems with communication. Right side single-sided deafness is related to increased activation of areas usually related to processing of degraded input, including the thalamus., Conclusion: Hemispheric dominance following monaural auditory stimulation is modulated by the spectral-temporal properties of the stimuli and by which ear is stimulated. Differences between patients with right- and left side deafness suggests that right side deafness is related to increased activation of areas involved in processing of degraded input., (Copyright © 2019 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2019
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20. Generic quality of life in persons with hearing loss: a systematic literature review.
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Nordvik Ø, Laugen Heggdal PO, Brännström J, Vassbotn F, Aarstad AK, and Aarstad HJ
- Abstract
Background: To the best of our knowledge, no empirically based consensus has been reached as to if, and to what extent, persons with hearing loss (HL) have reduced generic Quality of life (QoL). There seems to be limited knowledge regarding to what extent a hearing aid (HA) would improve QoL. The main aim of the present study was to review studies about the relationship between HL and QoL. A supporting aim was to study the association between distress and HL., Methods: Literature databases (Cinahl, Pub Med and Web of Science) were searched to identify relevant journal articles published in the period from January 2000 to March 17, 2016. We performed a primary search pertaining to the relationship between HL, HA and QoL (search number one) followed by a supporting search pertaining to the relationship between distress/mood/anxiety and HL (search number two). After checking for duplications and screening the titles of the papers, we read the abstracts of the remaining papers. The most relevant papers were read thoroughly, leaving us with the journal articles that met the inclusion criteria., Results: Twenty journal articles were included in the present review: 13 were found in the primary search (HL and QoL), and seven in the supporting search (HL and distress). The literature yields equivocal findings regarding the association between generic QoL and HL. A strong association between distress and HL was shown, where distressed persons tend to have a lowered generic QoL. It is suggested that QoL is lowered among HL patients. Some studies suggest an increased generic QoL following the use of HA, especially during the first few months after initiation of treatment. Other studies suggest that HA use is one of several possible factors that contribute to improve generic QoL., Conclusions: The majority of the studies suggest that HL is associated with reduced generic QoL. Using hearing aids seem to improve general QoL at follow-up within the first year. HL is a risk factor for distress. Further research is needed to explore the relationship between HL and generic QoL, in addition to the importance of influencing variables on this relationship., Competing Interests: Not applicable due to study design and article type.Not applicable due to study design and article type.The authors declare that they have no competing interests.Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
- Published
- 2018
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21. In Vitro-Stimulated IL-6 Monocyte Secretion and In Vivo Peripheral Blood T Lymphocyte Activation Uniquely Predicted 15-Year Survival in Patients with Head and Neck Squamous Cell Carcinoma.
- Author
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Aarstad HH, Vintermyr OK, Ulvestad E, Kross K, Heimdal JH, and Aarstad HJ
- Subjects
- Aged, Antigens, CD immunology, Antigens, CD metabolism, CD3 Complex immunology, CD3 Complex metabolism, Carcinoma, Squamous Cell complications, Carcinoma, Squamous Cell mortality, Cells, Cultured, Flow Cytometry, Head and Neck Neoplasms complications, Head and Neck Neoplasms mortality, Humans, Interleukin-6 metabolism, Kaplan-Meier Estimate, Leukocytes, Mononuclear immunology, Leukocytes, Mononuclear metabolism, Lipopolysaccharides immunology, Lipopolysaccharides pharmacology, Lymphocyte Activation immunology, Middle Aged, Monocytes drug effects, Monocytes metabolism, Multivariate Analysis, Neoplasm Staging, Papillomaviridae genetics, Papillomaviridae physiology, Papillomavirus Infections complications, Papillomavirus Infections virology, Prognosis, Receptors, Transferrin immunology, Receptors, Transferrin metabolism, Survival Rate, T-Lymphocytes metabolism, Carcinoma, Squamous Cell immunology, Head and Neck Neoplasms immunology, Interleukin-6 immunology, Monocytes immunology, T-Lymphocytes immunology
- Abstract
The study was performed in order to determine whether peripheral blood monocyte in vitro function, and lymphocyte in vivo activation at diagnosis, was associated with HPV tumor infection status and 15-year survival in head and neck squamous cell carcinoma (HNSCC) patients. Sixty-five patients from a consecutive cohort of newly diagnosed HNSCCs, together with 18 control patients, were included in the study. Monocyte responsiveness was assessed by measuring monocyte in vitro interleukin (IL)-6 secretions after 24 hours of LPS stimulation in cultures with a serum-free medium. T lymphocyte activation was determined as the fraction of CD71-positive cells on CD3-positive cells by flow cytometry, whereas HPV infection was determined by PCR on formalin-fixed paraffin-embedded (FFPE) tumor tissue. Disease-specific survivals and overall survivals were determined 15 years following inclusion. HPV-positive HNSCC patients had a lower monocyte LPS-stimulated IL-6 response. A high LPS-stimulated monocyte IL-6 response predicted a decreased survival rate (P=0.019). A high percentage of CD71-positive T lymphocytes also predicted an impaired prognosis (P=0.021). The predictive power of IL-6 monocyte LPS-stimulated responses was retained when adjusted for age, gender and TNM stage of the patients. The monocyte and T lymphocyte survival predictions were independent of each other. The survival was particularly low with a combined high activated monocyte and T lymphocyte status. In a multivariate analysis, IL-6 secretion and the percentage of CD71-positive T lymphocytes both uniquely predicted survival independent of HPV infection status. It is postulated that the natural and adaptive immune systems are separately and additionally linked to the clinical aggressiveness of HNSCCs.
- Published
- 2015
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22. Distinct single cell signal transduction signatures in leukocyte subsets stimulated with khat extract, amphetamine-like cathinone, cathine or norephedrine.
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Bredholt T, Ersvær E, Erikstein BS, Sulen A, Reikvam H, Aarstad HJ, Johannessen AC, Vintermyr OK, Bruserud Ø, and Gjertsen BT
- Subjects
- Cell Proliferation drug effects, Cell Survival drug effects, Cells, Cultured, Humans, Leukocytes, Mononuclear cytology, Leukocytes, Mononuclear metabolism, Signal Transduction drug effects, Alkaloids pharmacology, Catha, Leukocytes, Mononuclear drug effects, Phenylpropanolamine pharmacology, Plant Extracts pharmacology
- Abstract
Background: Amphetamine and amphetamine derivatives are suggested to induce an immunosuppressive effect. However, knowledge of how amphetamines modulate intracellular signaling pathways in cells of the immune system is limited. We have studied phosphorylation of signal transduction proteins (Akt, CREB, ERK1/2, NF-κB, c-Cbl, STAT1/3/5/6) and stress sensors (p38 MAPK, p53) in human leukocyte subsets following in vitro treatment with the natural amphetamine cathinone, the cathinone derivatives cathine and norephedrine, in comparison with a defined extract of the psychostimulating herb khat (Catha edulis Forsk.). Intracellular protein modifications in single cells were studied using immunostaining and flow cytometry, cell viability was determined by Annexin V-FITC/Propidium Iodide staining, and T-lymphocyte proliferation was measured by (3)H-thymidine incorporation., Results: Cathinone, cathine and norephedrine generally reduced post-translational modifications of intracellular signal transducers in T-lymphocytes, B-lymphocytes, natural killer cells and monocytes, most prominently affecting c-Cbl (pTyr700), ERK1/2 (p-Thr202/p-Tyr204), p38 MAPK (p-Thr180/p-Tyr182) and p53 (both total p53 protein and p-Ser15). In contrast, the botanical khat-extract induced protein phosphorylation of STAT1 (p-Tyr701), STAT6 (p-Tyr641), c-Cbl (pTyr700), ERK1/2 (p-Thr202/p-Tyr204), NF-κB (p-Ser529), Akt (p-Ser473), p38 MAPK (p-Thr180/p-Tyr182), p53 (Ser15) as well as total p53 protein. Cathinone, cathine and norephedrine resulted in unique signaling profiles, with B-lymphocytes and natural killer cells more responsive compared to T-lymphocytes and monocytes. Treatment with norephedrine resulted in significantly increased T-lymphocyte proliferation, whereas khat-extract reduced proliferation and induced cell death., Conclusions: Single-cell signal transduction analyses of leukocytes distinctively discriminated between stimulation with cathinone and the structurally similar derivatives cathine and norephedrine. Cathinone, cathine and norephedrine reduced phosphorylation of c-Cbl, ERK1/2, p38 MAPK and p53(Ser15), and norephedrine induced T-lymphocyte proliferation. Khat-extract induced protein phosphorylation of signal transducers, p38 MAPK and p53, followed by reduced cell proliferation and cell death. This study suggests that protein modification-specific single-cell analysis of immune cells could unravel pharmacologic effects of amphetamines and amphetamine-like agents, and further could represent a valuable tool in elucidation of mechanism(s) of action of complex botanical extracts.
- Published
- 2013
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23. Maturation of monocyte derived dendritic cells with OK432 boosts IL-12p70 secretion and conveys strong T-cell responses.
- Author
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Hovden AO, Karlsen M, Jonsson R, Aarstad HJ, and Appel S
- Subjects
- CD40 Antigens metabolism, Cell Membrane drug effects, Cell Membrane metabolism, Chemokines metabolism, Chemotaxis drug effects, Dendritic Cells drug effects, Dendritic Cells metabolism, Fluorescence, Humans, Inflammation Mediators metabolism, Lymphocyte Activation drug effects, Phenotype, T-Lymphocytes drug effects, Cell Differentiation drug effects, Dendritic Cells cytology, Immunity drug effects, Interleukin-12 metabolism, Monocytes cytology, Picibanil pharmacology, T-Lymphocytes immunology
- Abstract
Background: Design of tumour specific immunotherapies using the patients' own dendritic cells (DC) is a fast advancing scientific field. The functional qualities of the DC generated in vitro are critical, and today's gold standard for maturation is a cytokine cocktail consisting of IL-1β, IL-6, TNF-α and PGE2 generating cells lacking IL-12p70 production. OK432 is an immunotherapeutic agent derived from killed Streptococcus pyogenes that has been used clinically to treat malignant and benign neoplasms for decades., Methods: In this study, we analysed the effects of OK432 on DC maturation, DC migration, cytokine and chemokine secretion as well as T-cell stimulatory capacity, and compared it to the cytokine cocktail alone and combinations of OK432 with the cytokine cocktail., Results: OK432 induced a marked up-regulation of CD40 on the cell surface as well as a strong inflammatory response from the DC with significantly more secretion of 19 different cytokines and chemokines compared to the cytokine cocktail. Interestingly, secretion of IL-15 and IL-12p70 was detected at high concentrations after maturation of DC with OK432. However, the OK432 treated DC did not migrate as well as DC treated with cytokine cocktail in a transwell migration assay. During allogeneic T-cell stimulation OK432 treated DC induced proliferation of over 50 percent of CD4 and 30 percent of CD8 T-cells for more than two cell divisions, whereas cytokine cocktail treated DC induced proliferation of 12 and 11 percent of CD4 and CD8 T-cells, respectively., Conclusions: The clinically approved compound OK432 has interesting properties that warrants its use in DC immunotherapy and should be considered as a potential immunomodulating agent in cancer immunotherapy.
- Published
- 2011
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24. Chemokines are secreted by monocytes following OK-432 (lyophilized Streptococcus pyogenes) stimulation.
- Author
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Olsnes C, Stavang H, Brokstad K, Olofsson J, and Aarstad HJ
- Subjects
- Antineoplastic Agents immunology, Antineoplastic Agents pharmacology, CD18 Antigens metabolism, CD36 Antigens metabolism, Carcinoma, Squamous Cell immunology, Cell Adhesion drug effects, Head and Neck Neoplasms immunology, Humans, Immunotherapy, Intracellular Signaling Peptides and Proteins metabolism, Lymphocyte Activation, Male, Middle Aged, Monocytes immunology, Monocytes pathology, Phosphatidylinositol 3-Kinases metabolism, Phosphorylation drug effects, Picibanil immunology, Protein Binding drug effects, Protein-Tyrosine Kinases metabolism, Signal Transduction drug effects, Streptococcus pyogenes immunology, Syk Kinase, Carcinoma, Squamous Cell blood, Carcinoma, Squamous Cell therapy, Chemokine CCL2 metabolism, Chemokine CCL3 metabolism, Chemokine CCL4 metabolism, Chemokines metabolism, Head and Neck Neoplasms blood, Head and Neck Neoplasms therapy, Monocytes metabolism, Picibanil pharmacology
- Abstract
Background: OK-432, penicillin-killed Streptococcus pyogenes, is used in treating lymphangiomas and carcinomas. We have studied in vitro the role of mononuclear phagocytes (MNPs), including purified monocytes (MOs), in the immune response to OK-432. MIP-1alpha/beta and MCP-1 secretions were assessed in whole blood (WB), peripheral blood mononuclear cells (PBMCs) and purified MOs, after in vitro stimulation with OK-432 with or without adherence for 24 hours., Results: OK-432 stimulated MNPs to secrete MCP-1 and MIP-1alpha/beta in healthy individuals and in head and neck squamous cell carcinoma (HNSCC) patients, except for OK-432 stimulation of WB giving a minimal MIP-1alpha/beta response. Upon culture on low-attachment wells, a spontaneous chemokine secretion was observed, with an unchanged secretion following OK-432 stimulation. Inhibition of Syk kinase and/or PI-3 kinase did not significantly change the chemokine response to OK-432, except for MIP-1alpha production being increased upon Syk inhibitor addition and an increased MCP-1 response upon addition of both inhibitors. Adhesion may possibly involve beta1 and/or beta3 integrins, not beta2, whereas beta(1-3) integrins may act as co-stimulatory receptors for OK-432. Based on direct blockage of CD36 or CD18 by antibodies, MCP-1 production may be mediated by CD18 while MIP-1beta and MCP-1 production may occur upon binding to CD36., Conclusion: Adherent human MOs produce MCP-1 and MIP-1alpha/beta upon stimulation with OK-432. CD36 modulates MIP-1beta and MCP-1 response. Thus, to some extent OK-432 acts as a substance whereby only MOs adhered to surfaces secrete MCP-1 and MIP-1alpha/beta, in part explaining why OK-432 is suited as a biological response modifying drug.
- Published
- 2009
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25. Gene expression profiles of head and neck carcinomas from Sudanese and Norwegian patients reveal common biological pathways regardless of race and lifestyle.
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Dysvik B, Vasstrand EN, Løvlie R, Elgindi OA, Kross KW, Aarstad HJ, Johannessen AC, Jonassen I, and Ibrahim SO
- Subjects
- Aged, Antigens, Nuclear analysis, Antigens, Nuclear genetics, Black People genetics, Carcinoma, Squamous Cell genetics, Chemotactic Factors analysis, Chemotactic Factors genetics, Cluster Analysis, DNA-Binding Proteins analysis, DNA-Binding Proteins genetics, Female, Fibronectins analysis, Fibronectins genetics, Gene Expression Regulation, Neoplastic genetics, Head and Neck Neoplasms genetics, Humans, Immunohistochemistry, Keratins analysis, Keratins genetics, Ku Autoantigen, Life Style, Male, Middle Aged, Norway, RNA, Messenger genetics, RNA, Messenger metabolism, S100 Proteins analysis, S100 Proteins genetics, Sudan, White People genetics, Carcinoma, Squamous Cell pathology, Gene Expression Profiling, Head and Neck Neoplasms pathology
- Abstract
Purpose: To explore possible range of gene expression profiles in head and neck squamous cell carcinomas (HNSCC) and pairwised normal controls from Sudanese (n = 72) and Norwegian (n = 45) patients using a 15K cDNA microarray and to correlate the findings with clinicopathologic variables., Experimental Design: Samples from Sudan were grouped according to anatomic location/patients' habit of toombak (snuff) use, and 37 pools of 2 to 11 tumors matched to 37 pools of their normal controls from the same patients, respectively, were prepared. For Norway, eight pools of 3 to 11 tumors matched to eight pools of their normal controls from the same patients, respectively, were prepared according to anatomic location. Pools (n = 45) were hybridized to microarrays. For controls, 33 of the pools were hybridized against Human Reference RNA. Scanned array images were recorded, and data analysis was done in groups. For verification, results for selected genes were analyzed using quantitative real-time PCR/immunohistochemistry., Results: We identified 136 genes from Sudan and 154 from Norway as differentially expressed between tumors and controls. Changes of the genes found were confirmed in >70% of the pools by hybridization against Reference RNA. Seventy-three genes and three main pathways (signal transduction, cell communication, and ligand-receptor interaction) were of relevance to the HNSCCs from both countries. Hierarchical clustering of the 73 genes identified subclasses of mixed tumors from the two populations, two independent subgroups for Norwegian tumors by their anatomic sites, and five subgroups for Sudanese tumors by their toombak habits. Quantitative real-time PCR/immunohistochemistry validated the microarray-based data., Conclusions: Differences in gene expression between tumor and nontumor tissues were identified in HNSCCs. Analysis of the two population groups revealed a common set of 73 genes within three main biological pathways. This indicates that the development of HNSCCs is mediated by similar biological pathways regardless of differences related to race, ethnicity, lifestyle, and/or exposure to environmental carcinogens. Of particular interest, however, was the valuable association of gene expression signature found with toombak use and anatomic site of the tumors.
- Published
- 2006
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26. Monocyte and monocyte-derived macrophage secretion of MCP-1 in co-culture with autologous malignant and benign control fragment spheroids.
- Author
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Heimdal JH, Olsnes C, Olofsson J, and Aarstad HJ
- Subjects
- Antibodies, Monoclonal immunology, Antibodies, Monoclonal pharmacology, Carcinoma, Squamous Cell pathology, Cell Communication physiology, Chemokine CCL2 biosynthesis, Chemokine CCL2 genetics, Chemokine CCL2 immunology, Coculture Techniques, Gene Expression, Head and Neck Neoplasms pathology, Humans, Interleukin-6 metabolism, Lipopolysaccharides pharmacology, Macrophages drug effects, Monocytes drug effects, Mouth Mucosa cytology, Mouth Mucosa metabolism, RNA, Messenger biosynthesis, RNA, Messenger genetics, Spheroids, Cellular, Carcinoma, Squamous Cell metabolism, Chemokine CCL2 metabolism, Head and Neck Neoplasms metabolism, Macrophages metabolism, Monocytes metabolism
- Abstract
This study was performed in order to determine how monocytes and macrophages in co-culture with autologous head and neck squamous cell carcinoma (HNSCC) tumor tissue regulate the secretion of monocyte chemotactic protein-1 (MCP-1). The levels of MCP-1 were measured when autologous monocytes or monocyte-derived macrophages (MDMs) were co-cultured in vitro with autologous fragment (F)-spheroids established from HNSCC tumors or benign mucosa serving as control. MCP-1 secretion from co-culture stimulated monocytes and MDMs was increased compared to spontaneous MCP-1 secretion. With prolonged co-culture, MDMs showed a steady-state MCP-1 secretion above background levels for up to 96 h, even with change of co-culture media every 24 h. Addition of an anti-MCP-1 antibody to the medium decreased co-culture-induced monocyte IL-6 secretion. Addition of lipopolysaccharide (LPS) (1 [microg/ml) reduced MCP-1 secretion compared to spontaneous secretion in monocyte cultures. F-spheroids also secrete MCP-1, but at insignificant levels compared to the MCP-1 secretion from monocytes and MDMs. MCP-1 secretion from monocytes/MDMs is regulated differently when co-culture stimulation is compared to LPS-stimulation. Monocytes and MDMs expressed MCP-1 mRNA at a high level in all tested conditions: stimulated in co-culture, not stimulated or stimulated with LPS, indicating post-transcriptional regulation of MCP-1 secretion. The secretion of MCP-1 from tumor-derived F-spheroids, and the maintenance of co-culture MCP-1 secretion from MDMs in vitro, suggests that tumor-associated macrophages are a source of MCP-1 in HNSCC tumors.
- Published
- 2001
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