Research Topics
| Alina PorojnicuSummaryAffiliation: Institute for Cancer Research Country: Norway Publications
| Collaborators
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Detail Information
Publications
Sun beds and cod liver oil as vitamin D sourcesAlina Carmen Porojnicu
Department of Radiation Biology, Rikshospitalet Radiumhospitalet Medical Center, Montebello, 0310 Oslo, Norway
J Photochem Photobiol B 91:125-31. 2008..Within eight weeks after the last exposure the 25(OH)D(3) level decreased to the initial value in all volunteers irrespective of vitamin D supplementation or not...
Season of diagnosis is a prognostic factor in Hodgkin's lymphoma: a possible role of sun-induced vitamin DA C Porojnicu
Department of Radiation Biology, Institute for Cancer Research, Montebello, 0310 Oslo, Norway
Br J Cancer 93:571-4. 2005..364, 95% CI, -0.15 to 0.87; P = 0.025) for patients younger than 30 years. This finding may be related to higher endogenous levels of vitamin D in autumn, with a favourable influence on the conventional therapy...- Sun exposure and cancer survival in Norway: changes in the risk of death with season of diagnosis and latitudeAlina Carmen Porojnicu
Deparment of Radiation Biology, Institute for Cancer Research, Montebello, Oslo, Norway
Adv Exp Med Biol 624:43-54. 2008..Based on our results we suggest that calcidiol concentration at the time of cancer diagnosis is related to survival and discuss briefly ways to improve the vitamin D levels in the general population... 
Changes in risk of death from breast cancer with season and latitude: sun exposure and breast cancer survival in NorwayAlina Carmen Porojnicu
Department of Radiation Biology, Institute for Cancer Research, Montebello, 0310 Oslo, Norway
Breast Cancer Res Treat 102:323-8. 2007..The overall data support our earlier hypothesis that season of diagnosis and therapy start improves the survival for breast cancer...- Season of diagnosis is a predictor of cancer survival. Sun-induced vitamin D may be involved: a possible role of sun-induced Vitamin DAlina Porojnicu
Department of Radiation Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Montebello, 0310 Oslo, Norway
J Steroid Biochem Mol Biol 103:675-8. 2007..In view of these calcitriol and calcidiol data, the seasonal variation of cancer survival may be related to the calcidiol gradient, indicating that this Vitamin D metabolite may be more important than believed so far... - Seasonal and geographical variations in lung cancer prognosis in Norway. Does Vitamin D from the sun play a role?Alina Carmen Porojnicu
Department of Radiation Biology, Institute for Cancer Research, Montebello, 0310 Oslo, Norway
Lung Cancer 55:263-70. 2007..Seasonal and gender variations in Vitamin D level have been estimated from the analyses... - Colon cancer: prognosis for different latitudes, age groups and seasons in NorwayJohan Moan
Department of Radiation Biology, Institute for Cancer Research, Montebello, 0310 Oslo, Norway
J Photochem Photobiol B 89:148-55. 2007..The seasonal effect was slightly, but not significantly, better for the younger than for the older age group. The effect was similar for all three geographical regions, irrespective of SCC incidence... - Development of different human skin colors: a review highlighting photobiological and photobiophysical aspectsAsta Juzeniene
Department of Radiation Biology, Institute for Cancer Research, Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
J Photochem Photobiol B 96:93-100. 2009..The genetical processes behind some of the changes of skin color will be also briefly reviewed... - Ultraviolet radiation and malignant melanomaJohan Moan
Department of Radiation Biology, Institute for Cancer Research, Ullernchausseen 70, Montebello 0310, Norway
Adv Exp Med Biol 624:104-16. 2008..Comparisons of skin cancer data from Norway and Australia/New Zealand indicate that squamous cell carcinoma and basal cell carcinoma are mainly related to annual solar UVB fluences, while UVA fluences play a larger role for CMM... - At what time should one go out in the sun?Johan Moan
Department of Radiation Biology, Institute for Cancer Research, Montebello, Oslo, Norway
Adv Exp Med Biol 624:86-8. 2008..In view of this, short, nonerythemogenic exposures around noon should be recommended rather than longer nonerythemogenic exposures in the afternoon. This would give a maximal yield of vitamin D at a minimal CMM risk... - Addressing the health benefits and risks, involving vitamin D or skin cancer, of increased sun exposureJohan Moan
Department of Radiation Biology, Institute for Cancer Research, Montebello, 0310 Oslo, Norway
Proc Natl Acad Sci U S A 105:668-73. 2008.... - Prostate cancer survival is dependent on season of diagnosisZoya Lagunova
Department of Radiation Biology, Institute for Cancer Research, Montebello, Oslo, Norway
Prostate 67:1362-70. 2007..More recently, both prostate cancer incidence and mortality have been shown to increase with increasing latitude, which probably relates to photosynthesis of vitamin D... - Is the seasonal variation in cancer prognosis caused by sun-induced folate degradation?Arnfinn Hykkerud Steindal
Department of Radiation Biology, Institute for Cancer Research, Health Enterprise, Rikshospitalet Radiumhospitalet, Montebello, N 0310 Oslo, Norway
Med Hypotheses 69:182-5. 2007..It is known that folic acid, a synthetic form of folate, is degraded by UV radiation. We have also found that the most common folate derivative in the human body, 5-methyltetrahydrofolate, is UV sensitive... - [The photobiology of vitamin D--a topic of renewed focus]Johan Moan
Avdeling for strålingsbiologi, Rikshospitalet Radiumhospitalet, 0310 Oslo
Tidsskr Nor Laegeforen 126:1048-52. 2006.... - Solar radiation, vitamin D and survival rate of colon cancer in NorwayJohan Moan
Avdeling for strålingsbiologi, Institutt for kreftforskning, Montebello, N 0310 Oslo, Norway
J Photochem Photobiol B 78:189-93. 2005..One possible interpretation of the present data is that, the level of calcidiol, or its derivative calcitriol (1alpha,25-dihydroxyvitamin D3, 1alpha,25-(OH)2D3), may act positively in concert with conventional therapies of colon cancer... - Ultraviolet photodegradation of folic acidMorten Kristian Off
Department of Radiation Biology, Institute for Cancer Research, The Norwegian Radium Hospital, Montebello, Oslo
J Photochem Photobiol B 80:47-55. 2005..However, experiments performed in heavy water indicate that generation of singlet oxygen is probably not the explanation for the photosensitizing of folic acid...