Ingvild Johnsen Brusevold

• Kimmie-Dhansay, Faheema; Høyvik, Ann Catrin; Bhayat, Ahmed; Hussain, Faezah; Karunakaran, Arannikah & Kaya, Besime [Show all 12 contributors for this article] (2025). Dental anxiety and empathy among undergraduate oral health students in Norway, South Africa and Namibia. Acta Odontologica Scandinavica. ISSN 0001-6357. 84, p. 181–181. doi: 10.2340/aos.v84.43424. Full text in Research Archive Show summary

  Purpose/objectives: Dental anxiety is a common type of fear that can complicate dental treatment. The dental practitioner is crucial in both treating dental fear and anxiety as well as prevent it from arising. The ability to feel empathy is important in that matter. The dental practitioner’s own level of dental anxiety can possibly affect his or her ability to treat patients in an empathetic manner. The aim of this study was to assess and examine the relationship between level of empathy and dental anxiety in undergraduate oral healthcare students from Namibia, South Africa and Norway. Material and methods: A cross-sectional study was performed. Questionnaires were distributed, and responses were analyzed anonymously. Dental anxiety was assessed using Modified Dental Anxiety Scale (MDAS), and empathy level was assessed using Toronto Empathy Questionnaire (TEQ). Data were presented as means or medians and analyzed using a linear regression model in STATA with a 5% level of significance. Results: The response rate was 16.0%, and 298 completed questionnaires were received. MDAS was low in all groups (medians 7–10), however, significantly lower in Norway compared to Namibia and South Africa. The mean TEQ score was 46.8 in Namibia, 47.5 in South Africa and 50.4 in Norway, all above average empathy levels but significantly higher in Norway than in Namibia and South Africa. Conclusions: Oral healthcare students in Africa and Norway showed high empathy and low dental anxiety, which is reassuring for future oral health care professionals.

• Afzal, Sadaf Haque; Skaare, Anne; Wigen, Tove Irene & Brusevold, Ingvild Johnsen (2024). Molar-Incisor Hypomineralisation: Severity, caries and hypersensitivity. Journal of Dentistry. ISSN 0300-5712. 142. doi: 10.1016/j.jdent.2024.104881. Full text in Research Archive Show summary

  Objectives To investigate distribution of affected teeth and severity of molar-incisor hypomineralisation (MIH) in 8-9-year-old children. A second aim was to study association between severity of MIH and hypersensitivity, caries, and affection of incisors and second primary molars (SPM). Methods A total of 3013 children in one age cohort participated in a cross-sectional study, of which 851 children were diagnosed with MIH. A majority of these children were re-examined and MIH diagnosis based on the European Academy of Paediatric Dentistry criteria was confirmed in 538 children. The re-examinations were undertaken at the local clinics by one calibrated dentist. Data were tested with bivariate logistic regression analysis. Results were reported using frequencies, proportions, odds ratios (OR) and confidence intervals (CI). Results Almost half of the children with MIH (46.8 %) had at least one severely affected molar. Incisors were affected in 51.9 % of children with MIH, and the prevalence was higher in children with severe affection (57.4 %, p < 0.01). Among children with MIH, second primary molars were affected in 29.6 %, hypersensitivity in at least one first permanent molar was reported by 25.8 and 30.8 % had caries extending to dentine. Children classified with severe MIH were more likely to suffer from hypersensitivity (OR 5.62, 95 % CI 3.61–8.74) and dentine caries (OR 10.32, 95 % CI 6.46–16.50) than children with mild MIH. Conclusion Prevalence of hypomineralised incisors and SPM were high in the studied children with MIH. Children with severe MIH had higher probability of incisor affection, dentin caries and hypersensitivity. Clinical significance This study highlights the importance of understanding the association between MIH, caries and hypersensitivity, especially in children with severe MIH. These children need extensive and individualized care in the dental services to prevent caries and pain.

• Tuvrønningen, Hanne Shetelig; Rønneberg, Anne; Brusevold, Ingvild Johnsen & Wigen, Tove Irene (2024). Protetisk behandling med adhesiv teknikk – et alternativ i ung alder? Den norske tannlegeforenings Tidende. ISSN 0029-2303. 134, p. 696–700. Full text in Research Archive
• Anjum, Faiza Sarwar; Brusevold, Ingvild Johnsen & Wigen, Tove Irene (2024). Prognosis of non-vital incisors after apexification using bioceramics: a retrospective study. European Archives of Paediatric Dentistry. ISSN 1818-6300. 25, p. 637–644. doi: 10.1007/s40368-024-00915-5. Full text in Research Archive Show summary

  Purpose To evaluate the outcome of apexification using bioceramics in immature permanent teeth, and to study the factors influencing treatment outcome and frequency of spontaneous cervical root fractures. Methods Forty-six children with 51 non-vital permanent incisors treated with a bioceramic apical plug were included. Mean age at pulp necrosis was 9.8 (SD 2.2) years and mean follow-up time was 3.3 (SD 2.4) years. Data were extracted from dental records and included stage of root development, presence of external root resorptions, clinical signs of infection, size of periapical lesion, type and placement of bioceramic plug, and spontaneous root fracture. Treatment outcome was assessed using periapical index (PAI-score) and presence of clinical symptoms. The statistical analyses were conducted using IBM SPSS Statistics for Windows, version 28 (IBM Corp., Armonk, N.Y., USA). Data were cross-tabulated and tested with chi-square statistic. Results Biodentine™ was used as apical plug in 78.4% of the teeth and MTA in 21.6%. Complete healing or signs of healing was reported in 86.3% of the teeth, whilst seven teeth (13.7%) were non-healed. All non-healed teeth had preoperative clinical signs of infection. No difference was found in stage of root development, presence of root resorption, and type and placement of bioceramic plug in healed and non-healed teeth (p > 0.05). Five teeth (9.8%) exhibited root fracture 1–6 years after treatment and all had very immature root development. Type of bioceramic or external root resorption was not associated with spontaneous root fracture. Conclusion Apexification using bioceramics showed favourable prognosis in immature permanent teeth. Very immature teeth were at risk of root fracture after apexification with bioceramics.

• Afzal, Sadaf Haque; Wigen, Tove Irene; Skaare, Anne B & Brusevold, Ingvild Johnsen (2023). Molar–incisor hypomineralisation in Norwegian children: Prevalence and associated factors. European Journal of Oral Sciences. ISSN 0909-8836. 131(3). doi: 10.1111/eos.12930. Full text in Research Archive Show summary

  Abstract This study investigated the prevalence and associations of molar–incisor hypomineralisation (MIH) in 8–9 year‐old children in Oslo. A total of 3013 children in one age cohort participated in the study during their regular dental examination at the Public Dental Service. Hypomineralised enamel defects were recorded according to the European Academy of Paediatric Dentistry criteria for MIH. Information on health and medications used during pregnancy and in the child's first 3 years of life was obtained from a questionnaire administered to parents. The overall prevalence of MIH was 28.2%, with no gender difference. A higher prevalence of MIH was found in children who had been ill or had used medication in early life and in those whose mother had been ill during pregnancy. No association was found between MIH and prematurity or maternal use of medication during pregnancy. The multivariable analyses showed that children with MIH were more likely to have suffered from illness in early life (OR = 1.41, 95% CI: 1.17–1.70), used antibiotics during the first year of life (OR = 1.68, 95% CI: 1.19–2.35), experienced tooth pain (OR = 1.33, 95% CI: 1.03–1.72), and experienced pain while toothbrushing (OR = 2.17, 95% CI: 1.46–3.23) than children without MIH. The prevalence of MIH was high in the children participating in this study.

• Engh, Marit Stokke; Muhoozi, Grace Kyamazima Mehangye; Ngari, Moses; Skaare, Anne B; Westerberg, Ane Cecilie & Iversen, Per Ole [Show all 8 contributors for this article] (2022). Long-Term Effects of a Randomized Maternal Education Trial in Rural Uganda: Implications for Child Oral Health. American Journal of Tropical Medicine and Hygiene. ISSN 0002-9637. 107(4), p. 939–947. doi: 10.4269/ajtmh.22-0248. Full text in Research Archive Show summary

  The aim was to examine oral health among 5–6-year-old children whose mothers participated in a 6 months’ cluster-randomized education trial in rural Uganda starting when their children were 6–8 months old. The education focused on nutrition, oral hygiene, and child stimulation. In the current follow-up study, 357/511 (70%) children from the original trial were available for data collection (200 in the intervention and 157 in the control group). Molar caries was assessed on intraoral photographs. Children and/or caregivers answered a WHO health questionnaire for collection of oral data. Dental practices were compared between the intervention and control group using multilevel mixed effect logistic regression accounting for clustering. The children in the intervention group had less caries compared with the control group: 41% versus 60% (odds ratio [OR] 0.46; 95% confidence intervals [CI] 0.24–0.86, P = 0.02). The use of toothbrush to clean teeth was more frequent in the intervention than in the control group: 66% versus 38% (OR 3.39; 95% CI 1.54–7.45, P = 0.003), as was high teeth-cleaning frequency: 74% versus 62% (OR 1.72; 95% CI 1.09–2.69, P = 0.02). Self-reported problems such as toothache (10% versus 19%), difficulty biting (12% versus 24%) and chewing food (8.5% versus 18%) were significantly less frequent among children in the intervention compared with the control group. No significant differences were found in dietary habits. Our data shows that an educational intervention adjusted to a low-resource setting, provided in infancy, resulted in improved oral hygiene and reduced development of dental caries among children aged 5–6 years.

• Schmalfuss, Andreas Jörn; Sehic, Amer & Brusevold, Ingvild Johnsen (2021). Effects of antibiotics on the developing enamel in neonatal mice. European Archives of Paediatric Dentistry. ISSN 1818-6300. p. 1–10. doi: 10.1007/s40368-021-00677-4. Full text in Research Archive Show summary

  Purpose Identifying factors causing Molar-Incisor Hypomineralization (MIH) is an ongoing challenge. Preterm infants, routinely treated with antibiotics in cases of suspected sepsis, are more commonly afected by dental developmental defects. This study aimed to investigate the efects of gentamycin and ampicillin on the developing enamel in neonatal CD-1 mice in vivo.<p> <p>Methods Neonatal mice were randomized into a study (n=36) and a control (n=35) group. Antibiotics were injected intravenously for 4 days. All mice were sacrifced after 15–18 days. Micro-CT was used to analyse the mineral density (MD) of the enamel and the proportion of the enamel object volume (vol%) in frst molars and incisors.<p> <p>Results We demonstrated a signifcantly lower vol% enamel in the maxillary (30.9% vs. 32.7%; p=0.004) and mandibular (32.5% vs. 34.6%; p=0.015) molars in the study group than in the controls. The incisors were divided into segments upon analysis. We demonstrated both lower vol% and lower MD of the enamel in most segments in treated individuals compared to controls (p<0.05).<p> <p>Conclusion The reduced MD and vol% in the molars and incisors are likely to have been caused by the antibiotics given during tooth development. The presented analysis of teeth in neonatal mice with micro-CT could be a valid model for further research on dental developmental defects.

• Skaare, Anne B; Houlihan, Ciara; Nybø, Christine Jøsok & Brusevold, Ingvild Johnsen (2021). Knowledge, experience and perception regarding molar incisor hypomineralisation (MIH) among dentists and dental hygienists in Oslo, Norway. European Archives of Paediatric Dentistry. ISSN 1818-6300. 22, p. 851–860. doi: 10.1007/s40368-021-00649-8. Full text in Research Archive Show summary

  Abstract Aim The aim of this study is to gather baseline information on knowledge, perceptions, clinical experience and treatment options regarding MIH among dental care providers in Oslo, Norway, before a larger epidemiological study. Methods An electronic questionnaire was distributed to dentists ( n  = 88) and dental hygienists ( n  = 47) working in the Public Dental Service (PDS) in Oslo. The questionnaire consisted of five sections related to sociodemographic, clinical experience, perceptions, clinical management and preferences for further training. Descriptive statistics with chi-squared test was used, and level of statistical significance was set to 5%. Results Replies were obtained from 74.1% ( n  = 100) after two reminders. All respondents encountered MIH in their practice. The respondents’ perception of the prevalence of MIH in Oslo varied. The majority felt confident when diagnosing MIH (86%). The clinicians qualified in the last 10 years felt more confident than those who had qualified earlier ( p  = 0.016). Most were self-confident when treating these patients (68.3%), however, nearly all (88%) agreed that MIH was a clinical problem. The clinician’s treatment of MIH varied. Difficulties achieving adequate local anaesthetic (71.4%) and the child’s behavioural problems (84.1%) were treatment barriers for the dentists. Approximately two thirds (69%) would like further training, in particular on the aetiology (70%), diagnosis (57%) and treatment (77%) of the developmental disorder. Conclusion All clinicians were familiar with the diagnosis of MIH and experienced the condition to be a clinical problem. Continuing education on aetiology, diagnosis and treatment of MIH is requested by dental health personnel.

• Brusevold, Ingvild Johnsen; Kleivene, Karoline; Grimsøen, Benedikte & Skaare, Anne B (2021). Extraction of first permanent molars severely affected by molar incisor hypomineralisation: a retrospective audit. European Archives of Paediatric Dentistry. ISSN 1818-6300. doi: 10.1007/s40368-021-00647-w. Full text in Research Archive Show summary

  Abstract Aim The aim of this study was to evaluate possible spontaneous space closure after extraction of first permanent molars in children and their eventual need for orthodontic treatment. Methods Twenty-seven children with at least one first permanent molar planned for extraction were enrolled in the study. The children were referred to the Department of Paediatric Dentistry, University of Oslo, between 2009 and 2017. All extracted teeth were severely affected by Molar Incisor Hypomineralisation and/or caries. The children and their parents had consented to extraction and follow-up. Data were analysed with SPSS 26. Results The age of the children was between 5.5 and 12.1 years (mean 8.7) at extraction. The mean follow-up time was 3.2 years (range 1.1–6.3). Sixteen children (59.3%) had all four molars extracted, five (18.5%) had three, five had two and one had one molar extracted. In the maxilla, the second permanent molar had erupted in the place of the first molar in all the children, and none of them needed orthodontic space closure. In the mandible, eight children (29.6%) needed orthodontic treatment to close the spaces after extraction. In three children, the second molar was not yet erupted and treatment need was not settled. Conclusion Extraction of severely affected first permanent molars before the eruption of the second molar is a treatment option causing little additional treatment in the majority of cases.

• Zou, Lai-quan; Dworschak, Annika; Alizadeh, Rafieh; Kamrawa, Seyed; Alwashahi, Mohammed & Bock, Marie [Show all 12 contributors for this article] (2020). “U-Sniff ” - the international odor identification test for children: an extension of its normative database and study of global reliability. Rhinology. ISSN 0300-0729. 45(7). doi: 10.4193/Rhin19.355. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Bie, Thea Martine Granvoll; Baumgartner, Christine Sophie; Das, Runa & Espelid, Ivar (2018). Molar-incisiv misdannelse - beskrivelse og diagnostisk protokoll. Den norske tannlegeforenings Tidende. ISSN 0029-2303. Full text in Research Archive
• Aasrum, Monica; Thoresen, G. Hege; Christoffersen, Thoralf & Brusevold, Ingvild Johnsen (2018). p38 differentially regulates ERK, p21, and mitogenic signalling in two pancreatic carcinoma cell lines. Journal of cell communication and signaling. ISSN 1873-9601. 12(4), p. 699–707. doi: 10.1007/s12079-017-0444-0. Full text in Research Archive Show summary

  Whereas the p38 MAP kinase has largely been associated with anti-proliferative functions, several observations have indicated that it may also have positive effects on proliferation. In hepatocytes, we have found that p38 has opposing effects on DNA synthesis when activated by EGF and HGF. Here we have studied the function of p38 in EGF- and HGF-induced DNA synthesis in the two pancreatic carcinoma cell lines AsPC-1 and Panc-1. In Panc-1 cells, the MEK inhibitor PD98059 reduced EGF- and HGF-induced DNA synthesis, while the p38 inhibitor SB203580 strongly increased the basal DNA synthesis and reduced expression of the cyclin-dependent kinase inhibitor (CDKI) p21. In contrast, in AsPC-1 cells, EGF- and HGF-induced DNA synthesis was not significantly reduced by PD98059 but was inhibited by SB203580. Treatment with SB203580 amplified the sustained ERK phosphorylation induced by these growth factors and caused a marked upregulation of the expression of p21, which could be blocked by PD98059. These results suggest that while DNA synthesis in Panc-1 cells is enhanced by ERK and strongly suppressed by p38, in AsPC-1 cells, p38 exerts a pro-mitogenic effect through MEK/ERK-dependent downregulation of p21. Thus, p38 may have suppressive or stimulatory effects on proliferation depending on the cell type, due to differential cross-talk between the p38 and MEK/ERK pathways.

• Brusevold, Ingvild Johnsen & Espelid, Ivar (2018). Gutt med misdannede tenner. Tidsskrift for Den norske legeforening (Tidsskriftet). ISSN 0029-2001. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Bie, Thea Martine Granvoll; Baumgartner, Christine Sophie; Das, Runa & Espelid, Ivar (2017). Molar incisor malformation in six cases: description and diagnostic protocol. Oral surgery, oral medicine, oral pathology and oral radiology. ISSN 2212-4403. 124(1), p. 52–61. doi: 10.1016/j.oooo.2017.03.050. Full text in Research Archive Show summary

  Objective: The term molar-incisor malformation (MIM) has recently been presented in the scientific literature, where it is described as a condition with localized impaired root development. Here we present 6 recently discovered cases referred to our departments. Study Design: The patients were enrolled in the study after referral and were examined clinically and radiologically. Two extracted teeth were further examined with micro–computed tomography or microscopy. Results: Affected teeth were first permanent molars with hypoplastic roots, narrow pulp chambers, and a hypercalcified dentine layer cervical to the pulp chamber. Two of the cases also had cervical constrictions on the upper incisors. The patients were 8 to 12 years of age and healthy, but had experienced serious medical conditions of the head and neck region in their first year of life. Some of the cases had been referred because of acute infection and pain. Conclusion: In 5 out of 6 patients, severe health problems in the head and neck region early in life may have been associated with root malformation in molars and incisors. Patients with MIM need to be followed closely, and extractions should be planned at the right time to avoid unnecessary infection and pain in addition to orthodontic problems.

• Vingsnes, Trine Walberg; Omdal, Fredrikke Arenfeldt; Espelid, Ivar & Brusevold, Ingvild Johnsen (2017). Lang reisevei reduserer sannsynligheten for henvisning til spesialistbehandling i pedodonti. Den norske tannlegeforenings Tidende. ISSN 0029-2303. 127(10), p. 868–873. Full text in Research Archive
• Aasrum, Monica; Brusevold, Ingvild Johnsen; Christoffersen, Thoralf & Thoresen, G. Hege (2016). HGF-induced DNA synthesis in hepatocytes is suppressed by p38. Growth Factors. ISSN 0897-7194. 34(5-6), p. 217–223. doi: 10.1080/08977194.2017.1285765. Full text in Research Archive
• Tveteraas, Ingun Heiene; Aasrum, Monica; Brusevold, Ingvild Johnsen; Ødegård, John; Christoffersen, Thoralf & Sandnes, Dagny Lise (2016). Lysophosphatidic acid induces both EGFR-dependent and EGFR-independent effects on DNA synthesis and migration in pancreatic and colorectal carcinoma cells. Tumour Biology. ISSN 1010-4283. 37(2), p. 2519–2526. doi: 10.1007/s13277-015-4010-1. Full text in Research Archive
• Aasrum, Monica; Tjomsland, Vegard; Thoresen, G. Hege; Angelis, Paula De; Christoffersen, Thoralf & Brusevold, Ingvild Johnsen (2016). PI3K is required for both basal and LPA-induced DNA synthesis in oral carcinoma cells. Journal of Oral Pathology & Medicine. ISSN 0904-2512. 45(6), p. 425–432. doi: 10.1111/jop.12384. Full text in Research Archive
• Tjomsland, Vegard; Sandnes, Dagny Lise; Pomianowska, Ewa; Cizmovic, Smiljana Torbica; Aasrum, Monica & Brusevold, Ingvild Johnsen [Show all 8 contributors for this article] (2016). The TGFβ-SMAD3 pathway inhibits IL-1α induced interactions between human pancreatic stellate cells and pancreatic carcinoma cells and restricts cancer cell migration. Journal of Experimental & Clinical Cancer Research. 35:122, p. 1–12. doi: 10.1186/s13046-016-0400-5. Full text in Research Archive Show summary

  Background The most abundant cells in the extensive desmoplastic stroma of pancreatic adenocarcinomas are the pancreatic stellate cells, which interact with the carcinoma cells and strongly influence the progression of the cancer. Tumor stroma interactions induced by IL-1α/IL-1R1 signaling have been shown to be involved in pancreatic cancer cell migration. TGFβ and its receptors are overexpressed in pancreatic adenocarcinomas. We aimed at exploring TGFβ and IL-1α signaling and cross-talk in the stellate cell cancer cell interactions regulating pancreatic adenocarcinoma cell migration. Methods Human pancreatic stellate cells were isolated from surgically resected pancreatic adenocarcinomas and cultured in the presence of TGFβ or pancreatic adenocarcinoma cell lines. The effects of TGFβ were blocked by inhibitors or amplified by silencing the endogenous inhibitor of SMAD signaling, SMAD7. Pancreatic stellate cell responses to IL-1α or to IL-1α-expressing pancreatic adenocarcinoma cells (BxPC-3) were characterized by their ability to stimulate migration of cancer cells in a 2D migration model. Results In pancreatic stellate cells, IL-1R1 expression was found to be down-regulated by TGFβ and blocking of TGFβ signaling re-established the expression. Endogenous inhibition of TGFβ signaling by SMAD7 was found to correlate with the levels of IL-1R1, indicating a regulatory role of SMAD7 in IL-1R1 expression. Pancreatic stellate cells cultured in the presence of IL-1α or in co-cultures with BxPC-3 cells enhanced the migration of cancer cells. This effect was blocked after treatment of the pancreatic stellate cells with TGFβ. Silencing of stellate cell expression of SMAD7 was found to suppress the levels of IL-1R1 and reduce the stimulatory effects of IL-1α, thus inhibiting the capacity of pancreatic stellate cells to induce cancer cell migration. Conclusions TGFβ signaling suppressed IL-1α mediated pancreatic stellate cell induced carcinoma cell migration. Depletion of SMAD7 upregulated the effects of TGFβ and reduced the expression of IL-1R1, leading to inhibition of IL-1α induced stellate cell enhancement of carcinoma cell migration. SMAD7 might represent a target for inhibition of IL-1α induced tumor stroma interactions.

• Aasrum, Monica; Ødegård, John; Thoresen, G. Hege; Brusevold, Ingvild Johnsen; Sandnes, Dagny Lise & Christoffersen, Thoralf (2015). Gab1 amplifies signaling in response to low-intensity stimulation by HGF. Cell Biology International. ISSN 1065-6995. 39(10), p. 1177–1184. doi: 10.1002/cbin.10511. Full text in Research Archive
• Søland, Tine Merete & Brusevold, Ingvild Johnsen (2014). Prognostiske markører i kreftsvulster fra munnhulen – quo vadis? Den norske tannlegeforenings Tidende. ISSN 0029-2303. p. 364–368. Full text in Research Archive Show summary

  Plateepitelkarsinom i munnhulen er en alvorlig sykdom. Ca. 40 prosent av pasientene dør innen fem år etter at diagnosen er stilt, men på diagnosetidspunktet kan vi ikke forutsi hvilke. To prognosesystemer brukes i dag: TNM-systemet i klinikken og histologisk gradering (WHO). Verktøyene kan si noe om prognose for en gruppe pasienter, men er ikke gode nok til å forutsi prognosen for den enkelte pasient. Mange forskningsgrupper, inkludert vår egen, har prøvd å finne bedre prognostiske markører uten å lykkes. Problemet er ikke spesifikt for munnhulekreft, men gjelder de fleste krefttyper. Vi ønsker å plukke ut pasienter med en forventet dårlig prognose fordi de vil trenge en annen behandling og oppfølging enn pasienter med forventet god prognose. I denne artikkelen presenterer vi funn fra vår oversiktsartikkel i Histopathology (2013) (1). Vi har gått igjennom 172 artikler, publisert i perioden 2006–2012, som beskriver molekylære prognostiske studier basert på immunhistokjemi i orale plateepitelkarsinom. Konklusjonen er at det fortsatt ikke finnes noen optimale prognostiske molekylære markører for orale plateepitelkarsinomer. Dette skyldes at det generelt ikke finnes noen form for standardisering av hverken studiene eller metodene. Dermed er ikke studier og resultater reproduserbare. I tillegg er ofte pasientutvalget for lite til at man kan trekke generelle konklusjoner.

• Brusevold, Ingvild Johnsen; Tveteraas, Ingun Heiene; Aasrum, Monica; Ødegård, John; Sandnes, Dagny Lise & Christoffersen, Thoralf (2014). Role of LPAR3, PKC and EGFR in LPA-induced cell migration in oral squamous carcinoma cells. BMC Cancer. 14(1). doi: 10.1186/1471-2407-14-432. Full text in Research Archive Show summary

  Background Oral squamous cell carcinoma is an aggressive neoplasm with serious morbidity and mortality, which typically spreads through local invasive growth. Lysophosphatidic acid (LPA) is involved in a number of biological processes, and may have a role in cancer cell migration and invasiveness. LPA is present in most tissues and can activate cells through six different LPA receptors (LPAR1-6). Although LPA is predominantly promigratory, some of the receptors may have antimigratory effects in certain cells. The signalling mechanisms of LPA are not fully understood, and in oral carcinoma cells the specific receptors and pathways involved in LPA-stimulated migration are unknown. Methods The oral carcinoma cell lines E10, SCC-9, and D2 were investigated. Cell migration was studied in a scratch wound assay, and invasion was demonstrated in organotypic three dimensional co-cultures. Protein and mRNA expression of LPA receptors was studied with Western blotting and qRT-PCR. Activation of signalling proteins was examined with Western blotting and isoelectric focusing, and signalling mechanisms were further explored using pharmacological agents and siRNA directed at specific receptors and pathways. Results LPA stimulated cell migration in the two oral carcinoma cell lines E10 and SCC-9, but was slightly inhibitory in D2. The receptor expression profile and the effects of specific pharmacological antagonist and agonists indicated that LPA-stimulated cell migration was mediated through LPAR3 in E10 and SCC-9. Furthermore, in both these cell lines, the stimulation by LPA was dependent on PKC activity. However, while LPA induced transactivation of EGFR and the stimulated migration was blocked by EGFR inhibitors in E10 cells, LPA did not induce EGFR transactivation in SCC-9 cells. In D2 cells, LPA induced EGFR transactivation, but this was associated with slowing of a very high inherent migration rate in these cells. Conclusion The results demonstrate LPA-stimulated migration in oral carcinoma cells through LPAR3, mediated further by PKC, which acts either in concert with or independently of EGFR transactivation.

• Søland, Tine Merete & Brusevold, Ingvild Johnsen (2013). Prognostic molecular markers in cancer - quo vadis? Histopathology. ISSN 0309-0167. 63(3), p. 297–308. doi: 10.1111/his.12184. Full text in Research Archive Show summary

  Despite the tremendous number of studies of prognostic molecular markers in cancer, only a few such markers have entered clinical practise. The lack of clinical prognostic markers clearly reflects limitations in or an inappropriate approach to prognostic studies. This situation should be of great concern for the research community, clinicians and patients. In the present review, we evaluate immunohistochemical prognostic marker studies in oral squamous cell carcinomas (OSCC) from 2006 to 2012. We comment upon general issues such as study design, assay methods and statistical methods, applicable to prognostic marker studies irrespective of cancer type. The three most frequently studied markers in OSCC are reviewed. Our analysis revealed that most new molecular markers are reported only once. To draw conclusions of clinical relevance based on the few markers that appeared in more than one study was problematic due to between-study heterogeneity. Currently, much valuable tissue material, time and money are wasted on irrelevant studies.

• Brusevold, Ingvild Johnsen; Aasrum, Monica; Bryne, Magne & Christoffersen, Thoralf (2012). Migration induced by epidermal and hepatocyte growth factors in oral squamous carcinoma cells in vitro: role of MEK/ERK, p38 and PI-3 kinase/Akt. Journal of Oral Pathology & Medicine. ISSN 0904-2512. 41(7), p. 547–558. doi: 10.1111/j.1600-0714.2012.01139.x. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Husvik, Camilla; Schreurs, Olav Joseph F; Schenck, Karl; Bryne, Magne & Søland, Tine Merete (2010). Induction of invasion in an organotypic oral cancer model by CoCl2, a hypoxia mimetic. European Journal of Oral Sciences. ISSN 0909-8836. 118(2), p. 168–176. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Khuu, Cuong; Christoffersen, Thoralf & Bryne, Magne (2010). Nuclear and cytoplasmic expression of Met in oral squamous cell carcinoma and in an organotypic oral cancer model. European Journal of Oral Sciences. ISSN 0909-8836. 118(4), p. 342–349. Full text in Research Archive
• Søland, Tine Merete; Brusevold, Ingvild Johnsen; Koppang, Hanna Strømme; Schenck, Karl & Bryne, Magne (2008). Nerve growth factor receptor (p75NTR) and pattern of invasion predict poor prognosis in oral squamous cell carcinoma. Histopathology. ISSN 0309-0167. 53, p. 62–72. doi: 10.1111/j.1365-2559.2008.03063.x. Full text in Research Archive

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• Afzal, Sadaf Haque; Skaare, Anne B; Wigen, Tove Irene & Brusevold, Ingvild Johnsen (2024). Molar-incisor hypomineralization affects oral health-related quality of life in 8–9-year-old children. Full text in Research Archive
• Afzal, Sadaf Haque; Wigen, Tove Irene; Skaare, Anne B & Brusevold, Ingvild Johnsen (2023). Molar incisor hypomineralization in Norwegian children: Distribution, severity and hypersensitivity. Full text in Research Archive
• Anjum, Faiza Sarwar; Brusevold, Ingvild Johnsen & Wigen, Tove Irene (2022). Prognosis of non-vital anterior teeth treated with apexification using bioceramic apical plug. Full text in Research Archive
• Afzal, Sadaf Haque; Wigen, Tove Irene; Skaare, Anne B & Brusevold, Ingvild Johnsen (2022). Molar Incisor Hypomineralization in Norwegian children: Prevalence and associated factors. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Wigen, Tove Irene; Afzal, Sadaf Haque & Skaare, Anne B (2021). Hvorfor får barn emaljefeil? Aktuell Nordisk odontologi. ISSN 1902-3545. 46(1), p. 148–161. Full text in Research Archive Show summary

  Emaljefeil kan ses som lokale eller generelle misfarginger, såkaltekvalitative defekter, eller somkvantitative defekterhvor emaljener generelt tynn, manglende eller har furer, groper og ujevnstruktur. Årsaker kan være lokale påvirkninger, generellepåvirkninger eller genetiske endringer. Lokale påvirkninger somtanntraumer i melketannsettet gir ofte emaljefeil i det permanentetannsettet. Generelle påvirkninger som alvorlig sykdom undertanndannelsen, D-vitaminmangel og forgiftninger kan gi uliketyper emaljefeil. Mutasjoner i spesifikke emaljegener eller andregener som bidrar i embryogenese kan gi utviklingsforstyrrelser itannemalje. Mange emaljefeil av typen MIH kan ikke forklares ved noen av de nevnte faktorene, og det forskes på andre hittil ukjenteårsaksfaktorer.

• Brusevold, Ingvild Johnsen (2019). Vipeholmstudiene. Store Norske Leksikon (Nettutgaven). Full text in Research Archive
• Schmalfuss, Andreas Jörn; Sehic, Amer & Brusevold, Ingvild Johnsen (2018). Effects of high-dose antibiotics on developing enamel in neonate mice measured with micro-CT. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Aasrum, Monica; Bryne, Magne & Christoffersen, Thoralf (2011). Signalmekanismer som medierer EGF- og HGF-indusert migrasjon i orale plateepitelkarsinomceller in vitro. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Aasrum, Monica; Tveteraas, Ingun Heiene; Bryne, Magne & Christoffersen, Thoralf (2011). Signalling Mechanisms Mediating EGF- and HGF-induced Migration in Carcinoma Cells in Vitro. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Husvik, Camilla; Schreurs, Olav Joseph F; Schenck, Karl; Bryne, Magne & Søland, Tine Merete (2010). Induction of invasion in an organotypic oral cancer model by cobalt chloride, a hypoxia mimetic. European Journal of Cancer. ISSN 0959-8049. 8(5), p. 149–149. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Husvik, Camilla; Schreurs, Olav Joseph F; Schenck, Karl; Bryne, Magne & Søland, Tine Merete (2010). Induction of invasion in an organotypic oral cancer model by cobalt chloride, a hypoxia mimetic. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Khuu, Cuong; Christoffersen, Thoralf & Bryne, Magne (2009). Nuclear Met and p-p38 in oral squamous cell carcinoma and organotypic oral cancer model. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Khuu, Cuong; Christoffersen, Thoralf & Bryne, Magne (2009). Nuclear c-Met and p-p38 in oral sqamous cell carcinoma and organotypic oral cancer model. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Khuu, Cuong; Christoffersen, Thoralf & Bryne, Magne (2008). C-Met and p-p38 in oral cancer. Full text in Research Archive
• Søland, Tine Merete; Brusevold, Ingvild Johnsen; Koppang, Hanna Strømme; Schenck, Karl & Bryne, Magne (2008). p75NTR and pattern of invasion predict poor prognosis in oral squamous cell carcinomas. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Khuu, Cuong; Christoffersen, Thoralf & Bryne, Magne (2008). Nuclear c-Met and p-p38 at the invasive front of oral squamous cell carcinoma (OSCC. Full text in Research Archive
• Søland, Tine Merete; Brusevold, Ingvild Johnsen; Husvik, Camilla; Schreurs, Olav Joseph F; Schenck, Karl & Bryne, Magne (2008). Manipulation of invasion in a 3D-co-culture organotypic oral cancer model. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Khuu, Cuong & Bryne, Magne (2008). Nuclear c-Met and p-p38 at the invasive front of oral squamous cell carcinomas. European Journal of Cancer. ISSN 0959-8049. 6, p. 76–76. Full text in Research Archive
• Søland, Tine Merete; Brusevold, Ingvild Johnsen; Koppang, Hanna Strømme; Schenck, Karl & Bryne, Magne (2008). p75NTR and pattern of invasion predict poor prognosis in oral squamous cell carcinomas. European Journal of Cancer. ISSN 0959-8049. 6, p. 76–76. Full text in Research Archive
• Søland, Tine Merete; Brusevold, Ingvild Johnsen; Husvik, Camilla; Khuu, Cuong; Hayashi, Katsuhiko & Schenck, Karl [Show all 7 contributors for this article] (2007). Nerve growth factor receptor (p75NTR)is a marker of poor prognosis in T1-T2 oral squamous cell carcinomas. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Husvik, Camilla; Khuu, Cuong & Bryne, Magne (2007). Nerve growth factor receptor (p75 NTR) in an organotypic oral cancer model. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete; Husvik, Camilla; Khuu, Cuong & Bryne, Magne (2007). Nerve growth factor receptor (p75 NTR) in an organotypic oral cancer model. Full text in Research Archive
• Søland, Tine Merete; Brusevold, Ingvild Johnsen; Husvik, Camilla; Khuu, Cuong; Hayashi, Katsuhiko & Schenck, Karl [Show all 7 contributors for this article] (2007). Nerve growth factor receptor (p75NTR) is a marker of poor prognosis in T1-T2 oral squamous cell carcinomas. Full text in Research Archive
• Brusevold, Ingvild Johnsen; Søland, Tine Merete & Bryne, Magne (2006). Hepatocyte growth factor receptor in oral cancer. Full text in Research Archive
• Brusevold, Ingvild Johnsen (2011). Oral cancer- hepatocyte growth factor receptor in patient prognosis and cell migration. Universitetet i Oslo. ISSN 9788291757667. Full text in Research Archive

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