| 91. |
- Leidermark, Erik, 1981, et al.
(författare)
-
Estimating the risk for secondary cancer following targeted alpha therapy with astatine-211 intraperitoneal radioimmunotherapy.
- 2022
-
Ingår i: Journal of nuclear medicine : official publication, Society of Nuclear Medicine. - : Society of Nuclear Medicine. - 1535-5667. ; 64:1, s. 165-172
-
Tidskriftsartikel (refereegranskat)abstract
- Intraperitoneal 211At-based targeted alpha therapy (TAT) may hold most promise as an adjuvant therapy following surgery and chemotherapy in epithelial ovarian cancer to eradicate any remaining undetectable disease. This implies it will also be delivered to patients possibly already cured by the primary treatment. An estimate of long-term risks is therefore sought whether to justify the treatment. Methods: Baseline data for risk estimates of alpha-particle irradiation were collected from published studies on excess cancer induction and mortality for subjects exposed to either 224Ra treatments or Thorotrast contrast agent (25% ThO2 colloid, containing 232Th). Organ dosimetry for 224Ra and Thorotrast irradiation were taken from the literature. These organ-specific risks were then applied for our previously reported dosimetry for intraperitoneal (i.p.) 211At-TAT patients. Results: Risk could be estimated for 10 different organ or organ groups. The calculated excess relative risk per Gray (ERR/Gy) could be sorted into two groups. In the lower ERR/Gy group, up to approx. 5, were: Trachea, bronchus and lung 0.52 (CI 95% 0.21-0.82), Stomach 1.4 (CI 95% -5.0-7.9), Lymphoid and hematopoietic system 2.17 (CI 95% 1.7-2.7), Bone and articular cartilage 2.6 (CI 95% 2.0-3.3), Breast 3.45 (CI 95% -10-17) and Colon 4.5 (CI 95% -3.5-13). In the higher ERR/Gy group, ranging from approx. 10 to 15 were: Urinary bladder 10.1 (CI 95% 1.4-23), Liver 14.2 (CI 95% 13-16), Kidney 14.9 (CI 95% 3.9-26) and Lip, oral cavity and pharynx 15.20 (CI 95% 2.73-27.63). Applying a typical candidate patient (female, age 65 years) and correcting for reference population mortality rate, a total estimated excess mortality of an i.p. 211At-mAb treatment amounted to 1.13 per 100 treated. More than half of this excess originated from urinary bladder and kidney, 0.29 and 0.34 respectively. Depending on various adjustments in calculation and assumptions on competing risks excess mortality could range from 0.11 - 1.84 per 100 treated. Conclusion: Published epidemiological data on life-long detriment following alpha-particle irradiation and its dosimetry allowed calculations to estimate the risk for secondary cancer following 211At-based i.p. TAT. Measures to reduce dose to the urinary organs may further decrease the estimated relative low risk for secondary cancer from 211At-mAb based i.p. TAT.
|
|
| 92. |
- Lindegren, Sture, 1960, et al.
(författare)
-
Synthesis and biodistribution of 211At-labeled, biotinylated, and charge-modified poly-L-lysine: evaluation for use as an effector molecule in pretargeted intraperitoneal tumor therapy.
- 2002
-
Ingår i: Bioconjugate chemistry. - 1043-1802 .- 1520-4812. ; 13:3, s. 502-9
-
Tidskriftsartikel (refereegranskat)abstract
- Poly-L-lysine (7, 21, and 204 kDa) has been evaluated as an effector carrier for use in pretargeted intraperitoneal tumor therapy. For the synthesis, the epsilon-amino groups on the poly-L-lysine were modified in three steps utilizing conjugate biotinylation with biotin amidocaproate N-hydroxysuccinimide ester (BANHS), conjugate radiolabeling with (211)At using the intermediate reagent N-succinimidyl 3-(trimethylstannyl)benzoate (m-MeATE), and charge modification using succinic anhydride, resulting in an increase in the molecular weight of approximately 80% of the final product. The labeling of the m-MeATE reagent and subsequent conjugation of the polymer were highly efficient with overall radiochemical yields in the range of 60-70%. The in vitro avidin binding ability of the modified polymer was almost complete (90-95%), as determined by binding to avidin beads using a convenient filter tube assay. Following intraperitoneal (ip) injection in athymic mice, the 13 kDa polymer product was cleared mainly via the kidneys with fast kinetics (biological half-live T(b) approximately 2 h) and with low whole-body retention. The clearance of the 38 kDa polymer was distributed between kidneys and liver, and the 363 kDa polymer was mainly sequestered by the liver with a T(b) of 8 h. Increased tissue uptake in the thyroid, lungs, stomach, and spleen following the distribution of the large effector molecules (38 and 363 kDa) suggests that degradation of the polymers by the liver may release some of the label as free astatine/astatide.
|
|
| 93. |
|
|
| 94. |
|
|
| 95. |
|
|
| 96. |
- Nakanishi, Tomoko, et al.
(författare)
-
Age-dependent impact of the major common genetic risk factor for COVID-19 on severity and mortality
- 2021
-
Ingår i: Journal of Clinical Investigation. - : American Society For Clinical Investigation. - 0021-9738 .- 1558-8238. ; 131:23
-
Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND. There is considerable variability in COVID-19 outcomes among younger adults, and some of this variation may be due to genetic predisposition. METHODS. We combined individual level data from 13,888 COVID-19 patients (n = 7185 hospitalized) from 17 cohorts in 9 countries to assess the association of the major common COVID-19 genetic risk factor (chromosome 3 locus tagged by rs10490770) with mortality, COVID-19-related complications, and laboratory values. We next performed metaanalyses using FinnGen and the Columbia University COVID-19 Biobank. RESULTS. We found that rs10490770 risk allele carriers experienced an increased risk of all-cause mortality (HR, 1.4; 95% CI, 1.2-1.7). Risk allele carriers had increased odds of several COVID-19 complications: severe respiratory failure (OR, 2.1; 95% CI, 1.6-2.6), venous thromboembolism (OR, 1.7; 95% CI, 1.2-2.4), and hepatic injury (OR, 1.5; 95% CI, 1.2-2.0). Risk allele carriers age 60 years and younger had higher odds of death or severe respiratory failure (OR, 2.7; 95% CI, 1.8-3.9) compared with those of more than 60 years (OR, 1.5; 95% CI, 1.2-1.8; interaction, P = 0.038). Among individuals 60 years and younger who died or experienced severe respiratory failure, 32.3% were risk-variant carriers compared with 13.9% of those not experiencing these outcomes. This risk variant improved the prediction of death or severe respiratory failure similarly to, or better than, most established clinical risk factors. CONCLUSIONS. The major common COVID-19 genetic risk factor is associated with increased risks of morbidity and mortality, which are more pronounced among individuals 60 years or younger. The effect was similar in magnitude and more common than most established clinical risk factors, suggesting potential implications for future clinical risk management.
|
|
| 97. |
- Neddermeyer, Anne, et al.
(författare)
-
A new mutant NPM1/IDH2R140- and PML-RARA-associated lncRNA MALNC plays a role in AML biology, prognosis and drug response
-
Annan publikation (övrigt vetenskapligt/konstnärligt)abstract
- Acute myeloid leukemia (AML) is a hematopoietic malignancy characterized by poor prognosis that requires better understanding of its disease biology and new tools for suitable risk stratification and effective treatments. Long non-coding RNAs (lncRNAs) are involved in numerous molecular mechanisms, are implicated in tumor biology and can serve as clinical biomarkers, yet their role remains mostly unclear in AML. In this study, the aim was to discover and characterize lncRNAs implicated in AML and to describe their role in AML biology. Further aims were to explore their use as prognostic or predictive biomarkers. Using whole-transcriptome analysis, a novel lncRNA, here named MALNC, was identified. MALNC had elevated expression in two large AML cohorts compared to normal CD34+ cells. Clinical correlation analyses indicated that MALNC was almost uniquely expressed in patients with PML-RARA fusion gene and with co-mutated isocitrate dehydrogenase-2 R140 and nucleophosmin-1 (IDH2R140/NPM1). MALNC expression was specifically high at the promyelocytic stage and decreased with maturation in leukemic and normal cells. High MALNC expression associated independently with better overall survival. CRISPR-Cas9-knockout in promyelocytic cell lines impaired proliferation, colony formation and all-trans retinoic acid (ATRA)-induced differentiation. Also, MALNC-knockout dramatically sensitized cells to arsenic trioxide (ATO), ATO-ATRA combinatorial and Bcl-2-inhibitor venetoclax treatment as well as associated with cyclin-dependent kinase (Cdk)-inhibitor resistance. In conclusion, MALNC is overexpressed in certain subgroups of AML and could play a role during normal and leukemic hematopoietic maturation. Furthermore, it correlates with response to anti-leukemic drugs, which suggests a role as a predictive marker to drug response and survival in AML.
|
|
| 98. |
- Nightingale, Andrea, et al.
(författare)
-
Background and history of sustainability
- 2019
-
Ingår i: Environment and Sustainability in a Globalizing World. Andrea J. Nightingale (red.). - New York : Routledge. - 9781317501831 ; , s. 13-34, s. 13-34
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This chapter explores how the idea of sustainability has changed over time and within different regions. The expansion of the Industrial Revolution brought environmental concerns firmly onto the political agenda and established many of the environmental—social—economic relations that continue to shape sustainability challenges. The Industrial Revolution along with colonialism brought about widespread changes in economies and environments upon which the emerging global economy depended. Steady state is used in the environmental field to indicate an ecosystem, organism, or place that is in balance. While Thomas R. Malthus maintained that population growth would eventually lead to a crisis of resources, he simultaneously believed that technological progress could postpone the inevitable need to reduce demands on resource. Neo-Malthusianism refers to a line of thought advocating population control to ensure resource availability for current and future populations. Ideas of limits to economic growth, the need for moderating human exploitation of resources, and the desirability of steady states thus have a long history. © 2019 Taylor & Francis.
|
|
| 99. |
- Nightingale, Andrea, et al.
(författare)
-
Enacting sustainability
- 2019
-
Ingår i: Environment and Sustainability in a Globalizing World. Andrea J. Nightingale (red.). - New York : Routledge. - 9781317501831 ; , s. 56-81, s. 56-81
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This chapter looks at the ways that narratives of sustainability have been put into practice. It deals with the idea of measuring sustainability, and examines how approaches based in the biophysical sciences may differ from those in the social sciences. Measuring sustainability and sustainable development poses a number of problems, not least of which are availability of data. Many indicators put ecology at the core of sustainability, assuming that ecological sustainability is a prerequisite for social and economic sustainability. An ecological footprint represents the amount of biologically productive land and sea area necessary to supply the resources and energy a given human population consumes and needs to dispose of its waste. Ecological science has been primarily underpinned by the idea of stability at least since Frederic Clements’ seminal text on climax vegetation in 1936. The idea of planetary boundaries has captured the imagination of sustainability communities and has helped to increase awareness of sustainability issues. © 2019 Taylor & Francis.
|
|
| 100. |
- Nightingale, Andrea, et al.
(författare)
-
Narratives of sustainability key concepts and issues
- 2019
-
Ingår i: Environment and Sustainability in a Globalizing World. Andrea J. Nightingale (red.). - New York : Routledge. - 9781317501831 ; , s. 35-55, s. 35-55
-
Bokkapitel (övrigt vetenskapligt/konstnärligt)abstract
- This chapter reviews some of the key concepts and issues in sustainability debates in order to better understand how sustainability can be invoked for a wide range of purposes. By scrutinizing the narratives of environment and society that underpin sustainability, a wide range of conflicting conceptualizations becomes evident. The chapter deals with a discussion about the contrasting conceptualizations that underpin different narratives of sustainability. Social movements seeking to articulate competing visions of sustainability often draw upon the historically rooted value systems and ways of conceptualizing socionatures to move beyond anthropocentrism and ecocentrism. Linking society and environment ontologically through a socionatures conceptualization recognizes that entities like forests, grasslands, human bodies, even the atmosphere, are socio-natural entities. Most sustainability narratives are predicated upon some separation of society from environment. Two other narratives that are particularly important for understanding sustainability are anthropocentrism and ecocentrism. Anthropocentrism advocates often promote technical and managerial approaches to solve environmental crises. © 2019 Taylor & Francis.
|
|
