Olav Mella

Olav Mella
Haukeland University Hospital · Department of Oncology and Medical Physics

MD, PhD

About

131
Publications
8,428
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4,069
Citations
Citations since 2017
30 Research Items
1411 Citations
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2017201820192020202120222023050100150200250
2017201820192020202120222023050100150200250

Publications

Publications (131)
Article
Full-text available
Background: Gastrointestinal symptoms are common in ME/CFS, but there is a knowledge gap in the literature concerning gastrointestinal motility features and detailed symptom description. Objective: In this study, we aimed to characterize gastric motility and gastric symptoms in response to a liquid meal. Methods: We included 20 patients with M...
Article
Full-text available
Objective: A few earlier studies have found impaired endothelial function in patients with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS). The present study investigated large-vessel and small-vessel endothelial function in patients with ME/CFS. Study design: The study was a substudy of the RituxME trial, a national, multicenter, ra...
Article
Full-text available
Introduction Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is a disease with no validated specific and sensitive biomarker, and no standard approved treatment. In this observational study with no intervention, participants used a Fitbit activity tracker. The aims were to explore natural symptom variation, feasibility of continuous act...
Article
Full-text available
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disease with a variety of symptoms such as post-exertional malaise, fatigue, and pain, but where aetiology and pathogenesis are unknown. An increasing number of studies have implicated the involvement of the immune system in ME/CFS. Furthermore, a hereditary component is suggested by...
Article
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a disease of unknown etiology and pathogenesis, which manifests in a variety of symptoms like post-exertional malaise, brain fog, fatigue and pain. Hereditability is suggested by an increased disease risk in relatives, however, genome-wide association studies in ME/CFS have been limited...
Article
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Hyperthermia was added to standard preoperative chemoradiation for rectal adenocarcinomas in a phase II study. Patients with T3-4 N0-2 M0 rectal cancer or local recurrences were included. Radiation dose was 54 Gy combined with capecitabine 825 mg/m2 × 2 daily and once weekly oxaliplatin 55 mg/m2. Regional hyperthermia aimed at 41.5–42.5 °C for 60 m...
Article
Full-text available
Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a debilitating disease usually presenting after infection. Emerging evidence supports that energy metabolism is affected in ME/CFS, but a unifying metabolic phenotype has not been firmly established. We performed global metabolomics, lipidomics, and hormone measurements, and we used exp...
Article
Full-text available
The etiology of myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is unknown, but involvement of the immune system is one of the proposed underlying mechanisms. Human leukocyte antigen (HLA) associations are hallmarks of immune-mediated and autoimmune diseases. We have previously performed high resolution HLA genotyping and detected assoc...
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Introduction: Patients with myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) present with a range of symptoms including post-exertional malaise (PEM), orthostatic intolerance, and autonomic dysfunction. Dysfunction of the blood vessel endothelium could be an underlying biological mechanism, resulting in inability to fine-tune regulation...
Article
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Introduction: Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) is a disease with high symptom burden, of unknown etiology, with no established treatment. We observed patients with long-standing ME/CFS who got cancer, and who reported improvement of ME/CFS symptoms after chemotherapy including cyclophosphamide, forming the basis for this...
Article
Full-text available
The etiology and pathogenesis of Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) are unknown, and autoimmunity is one of many proposed underlying mechanisms. Human Leukocyte Antigen (HLA) associations are hallmarks of autoimmune disease, and have not been thoroughly investigated in a large ME/CFS patient cohort. We performed high resolu...
Article
Full-text available
A random-sequence peptide microarray can interrogate serum antibodies in a broad, unbiased fashion to generate disease-specific immunosignatures. This approach has been applied to cancer detection, diagnosis of infections, and interrogation of vaccine response. We hypothesized that there is an immunosignature specific to ME/CFS and that this could...
Article
Background: Previous phase 2 trials indicated benefit from B-lymphocyte depletion in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS). Objective: To evaluate the effect of the monoclonal anti-CD20 antibody rituximab versus placebo in patients with ME/CFS. Design: Randomized, placebo-controlled, double-blind, multicenter trial. (Clin...
Article
Purpose: Previous Phase II trials indicated clinical benefit from B-cell depletion using the monoclonal anti-CD20 antibody rituximab in patients with myalgic encephalopathy/chronic fatigue syndrome (ME/CFS). The association between rituximab serum concentrations and the effect and clinical relevance of antidrug antibodies (ADAs) against rituximab...
Article
Full-text available
Importance Patients with soft tissue sarcoma are at risk for local recurrence and distant metastases despite optimal local treatment. Preoperative anthracycline plus ifosfamide chemotherapy improves outcome in common histological subtypes. Objective To analyze whether the previously reported improvement in local progression-free survival by adding...
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Background: The role of consolidative radiotherapy (RT) in advanced diffuse large B-cell lymphoma (DLBCL) is not established. Patients and methods: In a population-based retrospective analysis of patients with DLBCL in Western Norway during 2003 to 2008, 170 consecutive patients admitted to Haukeland University Hospital (HUS) and 94 to Stavanger...
Article
Full-text available
Myalgic encephalopathy/chronic fatigue syndrome (ME/CFS) is a debilitating disease of unknown etiology, with hallmark symptoms including postexertional malaise and poor recovery. Metabolic dysfunction is a plausible contributing factor. We hypothesized that changes in serum amino acids may disclose specific defects in energy metabolism in ME/CFS. A...
Article
Full-text available
Myalgic Encephalopathy/Chronic Fatigue Syndrome (ME/CFS) is a disease of unknown etiology. We have previously suggested clinical benefit from B-cell depletion using the monoclonal anti-CD20 antibody rituximab in a randomized and placebo-controlled study. Prolonged responses were then demonstrated in an open-label phase-II study with maintenance rit...
Article
Full-text available
Infection-triggered disease onset, chronic immune activation and autonomic dysregulation in CFS point to an autoimmune disease directed against neurotransmitter receptors. Autoantibodies against G-protein coupled receptors were shown to play a pathogenic role in several autoimmune diseases. Here, serum samples from a patient cohort from Berlin (n=...
Article
Full-text available
Myalgic Encephalopathy/Chronic Fatigue Syndrome (ME/CFS) is a disease of unknown etiology. We previously reported a pilot case series followed by a small, randomized, placebo-controlled phase II study, suggesting that B-cell depletion using the monoclonal anti-CD20 antibody rituximab can yield clinical benefit in ME/CFS. In this single-center, open...
Article
Full-text available
Background Faced with a life-threatening illness, such as cancer, many patients develop stress symptoms, i.e. avoidance behaviour, intrusive thoughts and worry. Stress management interventions have proven to be effective; however, they are mostly performed in group settings and it is commonly breast cancer patients who are studied. We hereby presen...
Article
Advanced cervical cancer is routinely treated with radiotherapy and cisplatin-containing chemotherapy. Hyperthermia has been shown to improve the results of both radiotherapy and cisplatin. The feasibility of the combination of all three modalities was demonstrated and reported in a study of 68 previously untreated cervical cancer patients in 2005....
Data
Scheme for patient's self-reported CFS symptom change during follow-up. During 12 months follow-up, the patients recorded symptom changes the preceding two weeks, as compared to baseline. The visual analogue scale for the follow-up scheme was 0–6 (0: Major worsening; 1: Moderate worsening; 2: Slight worsening; 3: No change; 4: Slight improvement; 5...
Data
Effects of intervention group (Rituximab versus Placebo) on Fatigue score during 12 months follow-up, using General Linear Model for repeated measures, with separate analyses for self-reported and physician-assessed symptoms. (DOC)
Data
Scheme for physician-assessed CFS symptoms, at baseline and during follow-up. The patients were assessed at the outpatient clinic before intervention, and at 2, 3, 4, 6, 8, 10, and 12 months follow-up. The physicians assessed the patients CFS disease and recorded the symptoms according to visual analogue scales. Before intervention, the scale was 1...
Data
Full-text available
Materials and Methods (DNA and RNA purification, and cDNA synthesis. Quantitative PCR for XMRV detection. XMRV and MLV PCR. Viral amplification. RNase L Genotyping). (PDF)
Data
Scheme for patient's self-reported baseline CFS symptoms. Before intervention, the patients assessed their CFS disease and recorded their symptoms the last three months according to a visual analogue, scale 1–10 (1: no symptom; 5: moderate symptom; 10: very severe symptom). (TIF)
Data
CFS symptom changes during follow-up, for the two patients in the Placebo group with significant improvement. In panels A and B, changes in Fatigue score (black), Cognitive score (red), Pain score (green), “Other symptoms” score (orange), and “CFS overall” score (blue), during 12 months follow-up are shown for the two patients in the Placebo group...
Data
Full-text available
Primers and probes for detection of Xenotropic murine leukemia virus-related virus (XMRV) and MLV-related virus. (PDF)
Data
Full-text available
CONSORT Checklist. (PDF)
Article
Full-text available
Chronic fatigue syndrome (CFS) is a disease of unknown aetiology. Major CFS symptom relief during cancer chemotherapy in a patient with synchronous CFS and lymphoma spurred a pilot study of B-lymphocyte depletion using the anti-CD20 antibody Rituximab, which demonstrated significant clinical response in three CFS patients. In this double-blind, pla...
Article
To elucidate changes in gene expression after treatment with regional thermochemoradiotherapy in locally advanced squamous cell cervical cancer. Tru-Cut biopsy specimens were serially collected from 16 patients. Microarray gene expression levels before and 24 h after the first and second trimodality treatment sessions were compared. Pathway and net...
Article
The ESHO protocol 3-85 is a multicentre randomized trial investigating the value of hyperthermia as an adjuvant to radiotherapy in treatment of malignant melanoma. A total of 134 metastatic of recurrent malignant melanoma lesions in 70 patients were randomized to receive radiotherapy alone (3 fractions in 8 days) or each fraction followed by hypert...
Article
Full-text available
Chronic fatigue syndrome (CFS) is a disease of unknown aetiology. A patient with CFS had unexpected, marked recovery of CFS symptoms lasting for five months during and after cytotoxic chemotherapy for Hodgkin's disease. We reasoned that the transient CFS recovery was related to methotrexate treatment, which induces immunomodulation in part through...
Article
Although hyperthermia has been shown to increase the effect of some cytotoxic drugs both in vitro and in vivo, there is sparse data on the interaction of the two modalities during fractionated treatment in vivo. In vitro data suggest that, parallel to development of thermotolerance, turmour cell sensitivity to drugs may be modified. Thermotolerance...
Article
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Studying imaging findings of non-acquired immunodeficiency syndrome (AIDS) primary central nervous system lymphoma (PCNSL), we hypothesized that the imaging presentation has changed with the increasing incidence of PCNSL and is related to clinical factors (eg, time to diagnosis and the patient's being diagnosed alive or at postmortem examination)....
Article
As low-dose metronomic cyclophosphamide (CTX) and hyperthermia (HT) both exert antitumour effects in part through antiangiogenic mechanisms, interactive effects of the two modalities were explored. Subcutaneously implanted rat tumours (BT4An) were treated with CTX 35 mg/kg i.p. three doses a week for two weeks, local water-bath HT yielding mean tum...
Article
Full-text available
Primary central nervous system lymphoma (PCNSL) is a frequent complication in acquired immunodeficiency syndrome (AIDS). The objective of this survey was to investigate incidence, clinical features, radiological findings, histologic diagnosis, treatment and outcome for all patients with histologically verified AIDS-related PCNSL diagnosed in Norway...
Article
The incidence of primary central nervous system lymphoma (PCNSL) appears to be increasing in some countries, whereas it is stable in others. Many reports the last decades have suggested that there have been improvements in the treatment of PCNSL. The objective of this study was to analyze time trends in the incidence, clinical features, histologic...
Article
A prospective and randomized trial has been performed in order to evaluate combined modality therapy in patients with astrocytomas grade 3 and 4. Follow-up information is available on 244 patients. One half of the series received radiation therapy twice a week (40.00 Gy/5 weeks), the other half five times a week (50.00 Gy/5 weeks). Misonidazole 1.2...
Article
BACKGROUND Patients with advanced cervical carcinoma are treated routinely with radiotherapy and cisplatin-containing chemotherapy. It has been shown that hyperthermia can improve the results of both radiotherapy and cisplatin. In the current study, the feasibility and efficacy of the combination of all three modalities was studied in previously un...
Article
Full-text available
This study investigates delay in diagnosing primary central nervous system lymphoma (PCNSL), which has a variable clinical and radiological presentation. Early diagnosis and treatment may improve survival and cause less sequela in PCNSL. Medical records of all new cases of PCNSL morphologically verified while alive or by autopsy in Norway in 1989-1...
Article
This study compares attitudes among oncology professionals to whether complementary therapies should be offered in integrated units affiliated with departments of oncology. In June 2002 a questionnaire on alternative and complementary medicine was distributed among 156 physicians, 414 nurses, 164 radiation therapists and 94 administrative staff mem...
Article
A large suprasellar, partly cystic, contrast-enhancing tumor was resected from a 19-year-old woman who presented with bitemporal visual field defects and reduced visual acuity. Grossly, the tumor was brown and located in the subarachnoid space. Histologically, it was composed of spindle and pleomorphic cells, including giant tumor cells, with marke...
Article
It is well documented that an increasing proportion of cancer patients today use complementary and alternative medicine, mostly alongside conventional therapies. This study investigates the use of complementary and alternative medicine among oncology health workers and the reported effects. In June 2002, we conducted a national multicentre survey i...
Article
This study reports on oncology professionals' knowledge and attitude toward complementary and alternative medicines (CAM), classified according to their primary application as complementary or alternative methods. In June 2002, we conducted a national, multicentre survey of 828 Norwegian oncologists, nurses, clerks and therapeutic radiographers. A...
Article
Full-text available
The incidence of primary central nervous system lymphoma (PCNSL) has been reported to increase in some parts of the world, while being stable in other regions. In an attempt to characterize the incidence rate, clinical features, treatment, outcome, and prognostic factors of PCNSL in Norway, we report our experience in a large unselected series of p...
Article
This study compares attitudes to the proposed new Alternative medicine act that would give Norwegian practitioners of alternative medicine more scope in treating patients with cancer. In June 2002 a questionnaire on alternative and complementary medicine was distributed among 156 physicians, 414 nurses, 164 radiation therapists and 94 administrativ...
Article
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AIthough intensity-modulated radiotherapy (IMRT) may increase the therapeutic ratio of radiotherapy for a range of malignancies, only a few IMRT treatments have yet been performed in the Nordic countries. The scores derived from a national survey to assess Norwegian oncologists' expectations of IMRT are presented. A questionnaire was distributed to...
Article
There are two evidence based therapeutic options for locally advanced cervical cancer: Radiotherapy and concurrent chemotherapy (cisplatin alone or combined with other drugs) or radiation and hyperthermia, documented in randomised trials. The weight of evidence is less for the most advanced stages. Combination of all three options are currently tes...
Article
Combretastatin A-4 disodium phosphate (CA-4) enhances thermal damage in s.c. BT(4)An rat gliomas. We currently investigated how CA-4 and hyperthermia affect the tumor microenvironment and neovasculature to disclose how the two treatment modalities interact to produce tumor response. By confocal microscopy and immunostaining for von Willebrand facto...
Article
Attacking tumor vasculature is a promising approach for the treatment of solid tumors. The tubulin inhibitor combretastatin A-4 disodium phosphate (CA-4) is a new vascular targeting drug which displays a low toxicity profile. We wanted to investigate how CA-4 influences tumor perfusion in the BT4An rat glioma and how the vascular targeting properti...
Article
Full-text available
Estrogens administered in high doses were commonly used for therapy of advanced breast cancer before the introduction of contemporary endocrine therapy. While the mechanism of the antitumor effect is unknown, in vitro investigations have shown estrogens in high concentrations to be toxic to cell growth. Further, it has been shown that exposure of M...
Article
To investigate the toxicity of combretastatin A-4 disodium phosphate (CA-4) and its vascular effects in the subcutaneous (s.c.) BT4An rat glioma, and additionally, to determine the tumor response of CA-4 combined with hyperthermia. For assessment of drug toxicity, rats were given 50, 75, or 100 mg/kg CA-4 and followed by daily registration of weigh...