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Sökning: WFRF:(Karimian E)

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1.
  • Fitzmauric, C., et al. (författare)
  • Global, Regional, and National Cancer Incidence, Mortality, Years of Life Lost, Years Lived with Disability, and Disability-Adjusted Life-Years for 29 Cancer Groups, 1990 to 2017 : A Systematic Analysis for the Global Burden of Disease Study
  • 2019
  • Ingår i: JAMA Oncology. - : American Medical Association. - 2374-2437 .- 2374-2445. ; 5:12, s. 1749-1768
  • Tidskriftsartikel (refereegranskat)abstract
    • Importance: Cancer and other noncommunicable diseases (NCDs) are now widely recognized as a threat to global development. The latest United Nations high-level meeting on NCDs reaffirmed this observation and also highlighted the slow progress in meeting the 2011 Political Declaration on the Prevention and Control of Noncommunicable Diseases and the third Sustainable Development Goal. Lack of situational analyses, priority setting, and budgeting have been identified as major obstacles in achieving these goals. All of these have in common that they require information on the local cancer epidemiology. The Global Burden of Disease (GBD) study is uniquely poised to provide these crucial data.Objective: To describe cancer burden for 29 cancer groups in 195 countries from 1990 through 2017 to provide data needed for cancer control planning.Evidence Review: We used the GBD study estimation methods to describe cancer incidence, mortality, years lived with disability, years of life lost, and disability-adjusted life-years (DALYs). Results are presented at the national level as well as by Socio-demographic Index (SDI), a composite indicator of income, educational attainment, and total fertility rate. We also analyzed the influence of the epidemiological vs the demographic transition on cancer incidence.Findings: In 2017, there were 24.5 million incident cancer cases worldwide (16.8 million without nonmelanoma skin cancer [NMSC]) and 9.6 million cancer deaths. The majority of cancer DALYs came from years of life lost (97%), and only 3% came from years lived with disability. The odds of developing cancer were the lowest in the low SDI quintile (1 in 7) and the highest in the high SDI quintile (1 in 2) for both sexes. In 2017, the most common incident cancers in men were NMSC (4.3 million incident cases); tracheal, bronchus, and lung (TBL) cancer (1.5 million incident cases); and prostate cancer (1.3 million incident cases). The most common causes of cancer deaths and DALYs for men were TBL cancer (1.3 million deaths and 28.4 million DALYs), liver cancer (572000 deaths and 15.2 million DALYs), and stomach cancer (542000 deaths and 12.2 million DALYs). For women in 2017, the most common incident cancers were NMSC (3.3 million incident cases), breast cancer (1.9 million incident cases), and colorectal cancer (819000 incident cases). The leading causes of cancer deaths and DALYs for women were breast cancer (601000 deaths and 17.4 million DALYs), TBL cancer (596000 deaths and 12.6 million DALYs), and colorectal cancer (414000 deaths and 8.3 million DALYs).Conclusions and Relevance: The national epidemiological profiles of cancer burden in the GBD study show large heterogeneities, which are a reflection of different exposures to risk factors, economic settings, lifestyles, and access to care and screening. The GBD study can be used by policy makers and other stakeholders to develop and improve national and local cancer control in order to achieve the global targets and improve equity in cancer care. 
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  • Börjesson, Anna E, et al. (författare)
  • The role of estrogen receptor-alpha and its activation function-1 for growth plate closure in female mice
  • 2012
  • Ingår i: American Journal of Physiology-Endocrinology and Metabolism. - : American Physiological Society. - 0193-1849 .- 1522-1555. ; 302:11
  • Tidskriftsartikel (refereegranskat)abstract
    • Borjesson AE, Windahl SH, Karimian E, Eriksson EE, Lagerquist MK, Engdahl C, Antal MC, Krust A, Chambon P, Savendahl L, Ohlsson C. The role of estrogen receptor-alpha and its activation function-1 for growth plate closure in female mice. Am J Physiol Endocrinol Metab 302: E1381-E1389, 2012. First published March 13, 2012; doi:10.1152/ajpendo.00646.2011.-High estradiol levels in late puberty induce growth plate closure and thereby cessation of growth in humans. In mice, the growth plates do not fuse after sexual maturation, but old mice display reduced longitudinal bone growth and high-dose estradiol treatment induces growth plate closure. Estrogen receptor (ER)-alpha stimulates gene transcription via two activation functions (AFs), AF-1 and AF-2. To evaluate the role of ER alpha and its AF-1 for age-dependent reduction in longitudinal bone growth and growth plate closure, female mice with inactivation of ER alpha (ER alpha(-/-)) or ER alpha AF-1 (ER alpha AF-1(0)) were evaluated. Old (16- to 19-mo-old) female ER alpha(-/-) mice showed continued substantial longitudinal bone growth, resulting in longer bones (tibia: +8.3%, P < 0.01) associated with increased growth plate height (+18%, P < 0.05) compared with wild-type (WT) mice. In contrast, the longitudinal bone growth ceased in old ER alpha AF-1(0) mice (tibia: -4.9%, P < 0.01). Importantly, the proximal tibial growth plates were closed in all old ER alpha AF-1(0) mice while they were open in all WT mice. Growth plate closure was associated with a significantly altered balance between chondrocyte proliferation and apoptosis in the growth plate. In conclusion, old female ER alpha(-/-) mice display a prolonged and enhanced longitudinal bone growth associated with increased growth plate height, resembling the growth phenotype of patients with inactivating mutations in ER alpha or aromatase. In contrast, ER alpha AF-1 deletion results in a hyperactive ER alpha, altering the chondrocyte proliferation/apoptosis balance, leading to growth plate closure. This suggests that growth plate closure is induced by functions of ER alpha that do not require AF-1 and that ER alpha AF-1 opposes growth plate closure.
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  • Borjesson, AE, et al. (författare)
  • The role of estrogen receptor-α and its activation function-1 for growth plate closure in female mice
  • 2012
  • Ingår i: American journal of physiology. Endocrinology and metabolism. - : American Physiological Society. - 1522-1555 .- 0193-1849. ; 302:11, s. E1381-E1389
  • Tidskriftsartikel (refereegranskat)abstract
    • High estradiol levels in late puberty induce growth plate closure and thereby cessation of growth in humans. In mice, the growth plates do not fuse after sexual maturation, but old mice display reduced longitudinal bone growth and high-dose estradiol treatment induces growth plate closure. Estrogen receptor (ER)-α stimulates gene transcription via two activation functions (AFs), AF-1 and AF-2. To evaluate the role of ERα and its AF-1 for age-dependent reduction in longitudinal bone growth and growth plate closure, female mice with inactivation of ERα (ERα−/−) or ERαAF-1 (ERαAF-10) were evaluated. Old (16- to 19-mo-old) female ERα−/−mice showed continued substantial longitudinal bone growth, resulting in longer bones (tibia: +8.3%, P < 0.01) associated with increased growth plate height (+18%, P < 0.05) compared with wild-type (WT) mice. In contrast, the longitudinal bone growth ceased in old ERαAF-10mice (tibia: −4.9%, P < 0.01). Importantly, the proximal tibial growth plates were closed in all old ERαAF-10mice while they were open in all WT mice. Growth plate closure was associated with a significantly altered balance between chondrocyte proliferation and apoptosis in the growth plate. In conclusion, old female ERα−/−mice display a prolonged and enhanced longitudinal bone growth associated with increased growth plate height, resembling the growth phenotype of patients with inactivating mutations in ERα or aromatase. In contrast, ERαAF-1 deletion results in a hyperactive ERα, altering the chondrocyte proliferation/apoptosis balance, leading to growth plate closure. This suggests that growth plate closure is induced by functions of ERα that do not require AF-1 and that ERαAF-1 opposes growth plate closure.
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  • Fernandez-Vojvodich, P, et al. (författare)
  • Pro-inflammatory cytokines produced by growth plate chondrocytes may act locally to modulate longitudinal bone growth
  • 2012
  • Ingår i: Hormone research in paediatrics. - : S. Karger AG. - 1663-2826 .- 1663-2818. ; 77:3, s. 180-187
  • Tidskriftsartikel (refereegranskat)abstract
    • <b><i>Introduction:</i></b> Interleukin-1β (IL-1β) and tumour necrosis factor-α (TNF-α), both cytokines upregulated during chronic inflammation, are known to suppress bone growth. So far no role of these cytokines in modulation of normal bone growth has been established. <b><i>Methodology:</i></b> Applying<b> </b>RT-PCR and immunohistochemistry, expression of IL-1β and TNF-α was studied in cultured fetal (E20) rat metatarsal bones. Anakinra (500 µg/ml; IL-1 receptor antagonist) and/or etanercept (500 µg/ml; soluble TNF-α receptor) were used to block cytokine actions. <b><i>Results:</i></b> The local expression of IL-1β and TNF-α was confirmed in the rat metatarsal growth plate. When cultured for 12 days and compared to control, the length of bones exposed to anakinra, etanercept, or anakinra plus etanercept increased by 7.7 ± 2.0 (p < 0.05), 11.7 ± 2.8 (p < 0.01) and 20.3 ± 1.9% (p < 0.001), respectively, while the height of the hypertrophic growth plate zone (collagen X staining) increased by 11.0 ± 6.7, 17.4 ± 7.1 and 43.1 ± 5.0% (p < 0.01), respectively. Moreover, etanercept increased chondrocyte proliferation (BrdU incorporation). <b><i>Conclusion:</i></b> Our findings that IL-1β and TNF-α are produced by growth plate chondrocytes and that their antagonists improve growth of cultured metatarsal bones suggest that these cytokines play a physiological role in the normal regulation of longitudinal bone growth.
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  • Fernandez-Vojvodich, P, et al. (författare)
  • The biologics anakinra and etanercept prevent cytokine-induced growth retardation in cultured fetal rat metatarsal bones
  • 2011
  • Ingår i: Hormone research in paediatrics. - : S. Karger AG. - 1663-2826 .- 1663-2818. ; 76:4, s. 278-285
  • Tidskriftsartikel (refereegranskat)abstract
    • <i>Background/Aims:</i> Chronic inflammation during childhood often leads to impaired bone growth and reduced adult height. Proinflammatory cytokines interleukin (IL)-1β and tumor necrosis factor (TNF)-α synergistically impair bone growth in vitro. We hypothesized that biologic agents may rescue bones from cytokine-induced growth impairment and that insulin growth factor (IGF)-I may potentiate such an effect. <i>Methodology:</i> Metatarsal bones from fetal Sprague-Dawley rats (19–20 days p.c.) were treated with IL-1β plus TNF-α, or the combination of these cytokines with anakinra (IL-1 receptor antagonist), etanercept (TNF-inhibitor) and/or IGF-I. The bones were measured and growth expressed as percent increase in bone length over the 7-day culture period. <i>Results:</i> When exposed to IL-1β plus TNF-α (10 + 10 ng/ml), bone growth was markedly suppressed (6.6 ± 1.4 vs. 50.6 ± 2.5% in control bones; p < 0.001). The growth of cytokine exposed bones (IL-1β plus TNF-α) was dose-dependently rescued by anakinra (0.05–500 µg/ml) or etanercept (0.5–500 µg/ml); at the highest concentrations, growth was similar as in control bones never exposed to cytokines. Also when combining IGF-I (100 ng/ml) and relatively low concentrations of anakinra (0.05 µg/ml) or etanercept (5 µg/ml), growth was rescued in an additive way. <i>Conclusion:</i> Etanercept and anakinra efficiently and dose-dependently prevent cytokine-induced bone growth impairment, and combination with IGF-I further improves bone growth.
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  • Iravani, M., et al. (författare)
  • Effects of the selective GPER1 agonist G1 on bone growth
  • 2019
  • Ingår i: Endocrine Connections. - 2049-3614. ; 8:9, s. 1302-1309
  • Tidskriftsartikel (refereegranskat)abstract
    • Estrogens may affect bone growth locally or systemically via the known estrogen receptors ESR1, ESR2 and G protein-coupled estrogen receptor 1 (GPER1). Mouse and human growth plate chondrocytes have been demonstrated to express GPER1 and ablation of this receptor increased bone length in mice. Therefore, GPER1 is an attractive target for therapeutic modulation of bone growth, which has never been explored. To investigate the effects of activated GPER1 on the growth plate, we locally exposed mouse metatarsal bones to different concentrations of the selective GPER1 agonist G1 for 14 days ex vivo. The results showed that none of the concentrations of G1 had any direct effect on metatarsal bone growth when compared to control. To evaluate if GPER1 stimulation may systemically modulate bone growth, ovariectomized C57BL/6 mice were treated with G1 or beta-estradiol (E2). Similarly, G1 did not influence tibia and femur growth in treated mice. As expected, E2 treatment suppressed bone growth in vivo. We conclude that ligand stimulation of GPER1 does not influence bone growth in mice.
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