Blar i forfatter "Al-Saad, Samer"

Viser treff 1-20 av 34

    • Assessing PDL-1 and PD-1 in NoneSmall Cell Lung Cancer: A Novel Immunoscore Approach 

      Paulsen, Erna-Elise; Kilvær, Thomas Karsten; Rakaee, Mehrdad; Al-Saad, Samer; Hald, Sigurd; Andersen, Sigve; Richardsen, Elin; Ness, Nora; Busund, Lill-Tove; Bremnes, Roy M.; Dønnem, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-05)
      Novel immune biomarkers could complement the TNM classification for nonesmall cell cancer (NSCLC), improving the prognostic accuracy. The present study evaluated the prognostic significance of the immune checkpoint molecules programmed cell death protein 1 (PD-1) and PD-1 ligand (PD-L1) in 536 patients with stage I to IIIA NSCLC using an Immunoscore approach. Independently, and in combination, ...

    • Cancer associated fibroblasts in stage I-IIIA NSCLC: Prognostic impact and their correlations with tumor molecular markers 

      Kilvær, Thomas Karsten; Rakaeekhanehkenari, Mehrdad; Hellevik, Turid; Al-Saad, Samer; Paulsen, Erna-Elise; Busund, Lill-Tove; Dønnem, Tom; Martinez, Inigo Zubiavrre (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-08-07)
      Background Cancer Associated Fibroblasts (CAFs) are thought to regulate tumor growth and metastasis. Fibroblast Activating Protein 1 (FAP-1) is a marker for fibroblast activation and by many recognized as the main marker of CAFs. Alpha Smooth Muscle Actin (α-SMA) is a general myofibroblast marker, and can be used to identify CAFs. This study investigates the prognostic impact of FAP-1 and α-SMA ...

    • Cancer-associated fibroblasts from lung tumors maintain their immunosuppressive abilities after high-dose irradiation 

      Gorchs, Laia; Hellevik, Turid; Bruun, Jack-Ansgar; Camilio, Ketil Andre; Al-Saad, Samer; Stuge, Tor Brynjar; Martinez, Inigo Zubiavrre (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-05-12)
      Accumulating evidence supports the notion that high-dose (>5 Gy) radiotherapy (RT) regimens are triggering stronger pro-immunogenic effects than standard low-dose (2 Gy) regimens. However, the effects of RT on certain immunoregulatory elements in tumors remain unexplored. In this study, we have investigated the effects of high-dose radiotherapy (HD-RT) on the immunomodulating functions of cancer-associated ...

    • CD4/CD8 co-expression shows independent prognostic impact in resected non-small cell lung cancer patients treated with adjuvant radiotherapy 

      Hald, Sigurd; Bremnes, Roy M.; Al-Shibli, Khalid; Al-Saad, Samer; Andersen, Sigve; Stenvold, Helge; Busund, Lill-Tove; Dønnem, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)

    • CD45RO+ Memory T Lymphocytes – a Candidate Marker for TNM-Immunoscore in Squamous Non-Small Cell Lung Cancer 

      Paulsen, Erna-Elise; Kilvær, Thomas Karsten; Rakaeekhanehkenari, Mehrdad; Johansen Maurseth, Ramona; Al-Saad, Samer; Hald, Sigurd; Al-Shibli, Khalid; Andersen, Sigve; Richardsen, Elin; Busund, Lill-Tove; Bremnes, Roy M.; Dønnem, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11)
      Tumor-infiltrating lymphocytes (TILs) are vital in limiting cancer progression and may supplement the TNM classification. CD45RO+ memory TILs show major prognostic impact in various malignancies but have not been extensively explored in non–small cell lung cancer (NSCLC). In this study, we aimed to evaluate their potential in a NSCLC TNM-Immunoscore. Tissue microarrays were constructed from tumor ...

    • Estrogen receptors α and β and aromatase as independent predictors for prostate cancer outcome 

      Grindstad, Thea; Skjefstad, Kaja; Andersen, Sigve; Ness, Nora; Nordby, Yngve; Al-Saad, Samer; Fismen, Silje; Dønnem, Tom; Rakaee, Mehrdad; Busund, Lill-Tove; Bremnes, Roy M.; Richardsen, Elin (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-09)
      Androgens are considered important in normal prostate physiology and prostate cancer (PCa) pathogenesis. However, androgen-targeted treatment preventing PCa recurrence is still lacking. This indicates additional mediators contributing to cancer development. We sought to determine the prognostic significance of estrogen receptors, ERα and -β, and the aromatase enzyme in PCa. Tissue microarrays ...

    • Evaluation of the proliferation marker Ki-67 in a large prostatectomy cohort 

      Richardsen, Elin; Andersen, Sigve; Al-Saad, Samer; Rakaee, Mehrdad; Nordby, Yngve; Pedersen, Mona Irene; Ness, Nora; Grindstad, Thea K.W.; Movik, Ingeborg; Dønnem, Tom; Bremnes, Roy M.; Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-15)
      The tumor proliferation index marker Ki-67 is strongly associated with tumor cell proliferation, growth and progression, and is widely used in routine clinicopathological investigation. Prostate cancer is a complex multifaceted and biologically heterogeneous disease, and overtreatment of localized, low volume indolent tumors, is evident. Here, we aimed to assess Ki-67 expression and related ...

    • Evaluation of the proliferation marker Ki-67 in a large prostatectomy cohort. 

      Richardsen, Elin; Andersen, Sigve; Al-Saad, Samer; Rakaee, Mehrdad; Nordby, Yngve; Pedersen, Mona Irene; Ness, Nora; Grindstad, Thea K.W.; Movik, Ingeborg; Dønnem, Tom; Bremnes, Roy M.; Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-15)
      The tumor proliferation index marker Ki-67 is strongly associated with tumor cell proliferation, growth and progression, and is widely used in routine clinicopathological investigation. Prostate cancer is a complex multifaceted and biologically heterogeneous disease, and overtreatment of localized, low volume indolent tumors, is evident. Here, we aimed to assess Ki-67 expression and related ...

    • A gender specific improved survival related to stromal miR-143 and miR-145 expression in non-small cell lung cancer 

      Skjefstad, Kaja Konstanse; Johannessen, Charles; Grindstad, Thea K.W.; Kilvær, Thomas Karsten; Paulsen, Erna Elise; Pedersen, Mona Irene; Dønnem, Tom; Andersen, Sigve; Bremnes, Roy M.; Richardsen, Elin; Al-Saad, Samer; Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-04)
      Micro RNAs (miRNA) are small non-coding RNAs that post-transcriptionally regulate gene expression. Dysregulation of miRNA cluster 143/145 has been reported in several malignancies, but their role in non-small cell lung cancer (NSCLC) remains elusive. This study investigates the prognostic impact of miR-143 and miR-145 in primary tumors and metastatic lymph nodes in NSCLC tissue. Tissue from 553 ...

    • Gene expression, function and ischemia tolerance in male and female rat hearts after sub-toxic levels of Angiotensin II 

      Aljabri, Mohammad Belal; Lund, Trine; Høper, Anje Christina; Andreasen, Thomas Vennø; Al-Saad, Samer; Lindal, Sigurd; Ytrehus, Kirsti (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)

    • Gene Expression, Function and Ischemia Tolerance in Male and Female Rat Hearts After Sub-Toxic Levels of Angiotensin II 

      Aljabri, Mohammad Belal; Lund, trine; Høper, Anje Christina; Andreasen, thomas vennØ; Al-Saad, Samer; Lindal, Sigurd; Ytrehus, Kirsti (Journal article; Tidsskriftartikkel; Peer reviewed, 2010-12-19)
      To examine the response to chronic high-dose angiotensin II (Ang II) and a proposed milder response in female hearts with respect to gene expression and ischemic injury. Female and male litter–matched rats were treated with 400 ng kg<sup>-1</sup> min<sup>-1</sup> Ang II for 14 days. Hearts were isolated, subjected to 30-min ischemia and 30-min reperfusion in combination with functional monitoring ...

    • High progesterone receptor expression in prostate cancer is associated with clinical failure 

      Grindstad, Thea; Andersen, Sigve; Al-Saad, Samer; Dønnem, Tom; Kiselev, Yury; Melbø-Jørgensen, Christian; Skjefstad, Kaja; Busund, Lill-Tove; Bremnes, Roy M.; Richardsen, Elin (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-27)
      Background Prostate cancer is a highly heterogeneous disease and one of the leading causes of mortality in developed countries. Specific prognostic and predictive markers for prostate cancer patients are still lacking. A causal relationship between androgens and the development of prostate cancer is generally considered biologically plausible, but androgens are not the sole effector in the ...

    • High tumor cell expression of microRNA-21 in node positive non-small cell lung cancer predicts a favorable clinical outcome 

      Stenvold, Helge; Dønnem, Tom; Andersen, Sigve; Al-Saad, Samer; Valkov, Andrey Yurjevich; Pedersen, Mona Irene; Busund, Lill-Tove; Bremnes, Roy M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)

    • The impact of MET, IGF-1, IGF1R expression and EGFR mutations on survival of patients with non-small-cell lung cancer 

      Al-Saad, Samer; Richardsen, Elin; Kilvær, Thomas Karsten; Dønnem, Tom; Andersen, Sigve; Rakaee, Mehrdad; Bremnes, Roy M.; Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-25)
      Introduction: <br> To compare the efficacy of silver in situ hybridization (SISH) and immunohistochemistry (IHC) in detecting MET and IGF1R alterations and to investigate their prevalence and prognostic significance. A possible correlation between MET receptor expression, MET gene alterations and the two most frequent occurring EGFR gene mutations was also investigated. <br>Materials and ...

    • Independent and Tissue-Specific Prognostic Impact of miR-126 in Nonsmall Cell Lung Cancer 

      Dønnem, Tom; Lønvik, Kenneth; Eklo, Katrine; Berg, Thomas; Sørbye, Sveinung Wergeland; Al-Shibli, Khalid Ibrahim; Al-Saad, Samer; Andersen, Sigve; Stenvold, Helge; Bremnes, Roy M.; Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Angiogenesis is pivotal in tumor development. Vascular endothelial growth factor-A (VEGF-A) is considered one of the most important angiogenic factors, but lately several microRNAs (miRs) have been associated with vascular development. miR-126 has been related to tumor angiogenesis and in the regulation of VEGF-A. The authors aimed to investigate the prognostic impact of miR-126 and its co-expression ...

    • Isoflurane increases tolerance to renal ischemia reperfusion injury compared to propofol: An experimental study in pigs 

      Roaldsen, Marius Håke; Ciosek, Timothy Allan; Richardsen, Elin; Al-Saad, Samer; Patel, Hitendra R.H.; Aarsæther, Erling Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-09)
      <i>Purpose</i>: To compare two clinically relevant anesthetic agents, i.e., isoflurane versus propofol with respect to protection of the kidney in a porcine renal ischemia reperfusion model. <p> <p><i>Materials and Methods</i>: 14 hybrid pigs were randomized to anesthesia with either isoflurane or propofol prior to laparoscopic surgery. Following anesthesia, the left kidney hilum was clamped for ...

    • Low Expression of miR-424-3p is Highly Correlated with Clinical Failure in Prostate Cancer 

      Richardsen, Elin; Andersen, Sigve; Al-Saad, Samer; Rakaee, Mehrdad; Nordby, Yngve; Pedersen, Mona Irene; Ness, Nora; Ingebriktsen, Lise; Fassina, Ambrogio; Tasken, Kristin Austlid; Millls, Ian; Dønnem, Tom; Bremnes, Roy M.; Rasmussen Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-23)
      Prostate cancer (PC) is a highly heterogenous disease and one of the leading causes of mortality in developed countries. Recently, studies have shown that expression of immune checkpoint proteins are directly or indirectly repressed by microRNAs (miRs) in many types of cancers. The great advantages of using miRs based therapy is the capacity of these short transcripts to target multiple molecules ...

    • MicroRNA 141 is associated to outcome and aggressive tumor characteristics in prostate cancer 

      Richardsen, Elin; Andersen, Sigve; Melbø-Jørgensen, Christian; Rakaee, Mehrdad; Ness, Nora; Al-Saad, Samer; Nordby, Yngve; Pedersen, Mona Irene; Dønnem, Tom; Bremnes, Roy M.; Rasmussen Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-23)
      A large number of miRNAs influence key cellular processes involved in prostate tumorigenesis. Previous studies have demonstrated high expression of miRNAs in human prostate cancer (PC) tissues and cell lines. In previous microarray data, we found miR-141 to be upregulated and miR-145 to be downregulated in PC. In this large PC cohort (n = 535), we explored the prognostic role of miR-141 and miR-145 ...

    • MicroRNA Signatures in Tumor Tissue Related to Angiogenesis in Non-Small Cell Lung Cancer 

      Dønnem, Tom; Fenton, Christopher Graham; Lønvik, Kenneth; Berg, Thomas; Eklo, Katrine; Andersen, Sigve; Stenvold, Helge; Al-Shibli, Khalid Ibrahim; Al-Saad, Samer; Bremnes, Roy M.; Busund, Lill-Tove (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Angiogenesis is regarded as a hallmark in cancer development, and anti-angiogenic treatment is presently used in non-small cell lung cancer (NSCLC) patients. MicroRNAs (miRs) are small non-coding, endogenous, single stranded RNAs that regulate gene expression. In this study we aimed to identify significantly altered miRs related to angiogenesis in NSCLC. From a large cohort of 335 NSCLC patients, ...

    • Monocarboxylate transporters 1-4 in NSCLC: MCT1 is an independent prognostic marker for survival 

      Eilertsen, Marte; Andersen, Sigve; Al-Saad, Samer; Kiselev, Yury; Dønnem, Tom; Stenvold, Helge; Pettersen, Ingvild; Al-Shibli, Khalid; Richardsen, Elin; Busund, Lill-Tove; Bremnes, Roy M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)