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- Sun, M. D., et al.
(författare)
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New short-lived isotope 223Np and the absence of the Z = 92 subshell closure near N = 126
- 2017
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Ingår i: Physics Letters B. - : Elsevier. - 0370-2693 .- 1873-2445. ; 771, s. 303-308
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Tidskriftsartikel (refereegranskat)abstract
- The N=130 short-lived isotope 223Np was produced as evaporation residue (ER) in the fusion reaction 40Ar + 187Re at the gas-filled recoil separator Spectrometer for Heavy Atom and Nuclear Structure (SHANS). It was identified through temporal and spatial correlations with α decays of 215Ac and/or 211Fr, the third and fourth members of the α-decay chain starting from 223Np. The pileup signals of ER(223Np)–α(223Np)–α(219Pa) were resolved by using the digital pulse processing technique. An α decay with half-life of T1/2=2.15(52100) μs and energy of Eα=9477(44) keV was attributed to 223Np. Spin and parity of 9/2− were tentatively proposed for the ground state of 223Np by combining the reduced α-decay width and large-scale shell-model calculations. This assignment together with the proton separation energy disprove the existence of a Z=92 subshell closure.
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- Wang, X. T., et al.
(författare)
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Microcystin (-LR) induced testicular cell apoptosis via up-regulating apoptosis-related genes in vivo
- 2013
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Ingår i: Food and Chemical Toxicology. - : Elsevier BV. - 0278-6915. ; 60, s. 309-317
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Tidskriftsartikel (refereegranskat)abstract
- Microcystin-LR (MC-LR) can induce apoptosis of a wide range of tissue cells including testicular cells. The purpose of the study was to find out whether the expression and phosphorylation of p53, Bcl-2 protein family proteins, Cyt c, and caspases were involved in the induction of testicular cell apoptosis by MC-LR in mice. Results showed that following exposure to MC-LR, expression of Bax, caspase 3 and caspase 8 was up-regulated. Significant increases in the phosphorylation of both p53 and Bcl-2 were identified after the administration of MC-LR. The administration of MC-LR also resulted in significant increases of c-myc, c-jun, and c-fos. In conclusion, p53, Bcl-2, Bax, Caspase 3 and Caspase 8 are involved in the regulation of MC-LR-induced apoptosis of testicular cells. The overexpression of c-myc, c-jun and c-fos suggests that MC-LR may have carcinogenic potential for testes. (C) 2013 Elsevier Ltd. All rights reserved.
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- Zhou, T. J., et al.
(författare)
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Understanding and building upon pioneering work of Nobel Prize in Physics 2021 laureates Syukuro Manabe and Klaus Hasselmann: From greenhouse effect to Earth system science and beyond
- 2022
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Ingår i: Science China-Earth Sciences. - : Springer Science and Business Media LLC. - 1674-7313 .- 1869-1897. ; 65, s. 589-600
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Forskningsöversikt (refereegranskat)abstract
- The Nobel Prize in Physics 2021 was awarded jointly to Syukuro Manabe, Klaus Hasselmann, and Giorgio Parisi for their groundbreaking contributions to our understanding of complex systems. This is the first time that climate scientists were awarded the Nobel Physics Prize. Here, we present the evolution of climate science in the past similar to 200 years and highlight the landmarks of the developments in advancing our understanding of climate change, placing the pioneering contributions of Manabe and Hasselmann into a historical perspective. The backbone of modern climate science is further discussed in the context of the development of the discipline from the discovery of the greenhouse effect to the formation of Earth system science. Perspectives on the future development of climate science are also presented.
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- Li, X. T., et al.
(författare)
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Association of the adiponectin gene (ADIPOQ) +45 T > G polymorphism with the metabolic syndrome among Han Chinese in Sichuan province of China
- 2012
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Ingår i: Asia Pacific Journal of Clinical Nutrition. - 0964-7058. ; 21:2, s. 296-301
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Tidskriftsartikel (refereegranskat)abstract
- The metabolic syndrome is a cluster of abnormalities characterized by obesity, impaired glucose metabolism, hypertension or elevated blood pressure, and dyslipidemia. The aim of this study was to investigate the association of the adiponectin gene (ADIPOQ) +45 T > G polymorphism with the metabolic syndrome among Han Chinese in Sichuan province of China. A case-control design was used including 116 patients with the metabolic syndrome and 108 unrelated controls, matched on age and gender. The ADIPOQ +45G allele (TG+GG) had a significant association with risk of the metabolic syndrome (odds ratio=1.88, 95% confidence interval: 1.03-3.44, p=0.039) adjusted for education, physical activity, family history of related diseases, smoking and drinking, compared with subjects with IT genotype. The association between the ADIPOQ +45 T>G polymorphism and the metabolic syndrome was independent of multiple confounders.
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- Zuo, H., et al.
(författare)
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Vitamin B6 catabolism and lung cancer risk : Results from the Lung Cancer Cohort Consortium (LC3)
- 2019
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Ingår i: Annals of Oncology. - : Elsevier BV. - 0923-7534 .- 1569-8041. ; 30:3, s. 478-485
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Tidskriftsartikel (refereegranskat)abstract
- Background Increased vitamin B6 catabolism related to inflammation, as measured by the PAr index (the ratio of 4-pyridoxic acid over the sum of pyridoxal and pyridoxal-5'-phosphate), has been positively associated with lung cancer risk in two prospective European studies. However, the extent to which this association translates to more diverse populations is not known. Materials and methods For this study, we included 5323 incident lung cancer cases and 5323 controls individually matched by age, sex, and smoking status within each of 20 prospective cohorts from the Lung Cancer Cohort Consortium. Cohort-specific odds ratios (ORs) and 95% confidence intervals (CIs) for the association between PAr and lung cancer risk were calculated using conditional logistic regression and pooled using random-effects models. Results PAr was positively associated with lung cancer risk in a dose-response fashion. Comparing the fourth versus first quartiles of PAr resulted in an OR of 1.38 (95% CI: 1.19-1.59) for overall lung cancer risk. The association between PAr and lung cancer risk was most prominent in former smokers (OR: 1.69, 95% CI: 1.36-2.10), men (OR: 1.60, 95% CI: 1.28-2.00), and for cancers diagnosed within 3 years of blood draw (OR: 1.73, 95% CI: 1.34-2.23). Conclusion Based on pre-diagnostic data from 20 cohorts across 4 continents, this study confirms that increased vitamin B6 catabolism related to inflammation and immune activation is associated with a higher risk of developing lung cancer. Moreover, PAr may be a pre-diagnostic marker of lung cancer rather than a causal factor.
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- Bethlehem, RAI, et al.
(författare)
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Brain charts for the human lifespan
- 2022
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 1476-4687 .- 0028-0836. ; 604:79057906, s. 525-
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Tidskriftsartikel (refereegranskat)abstract
- Over the past few decades, neuroimaging has become a ubiquitous tool in basic research and clinical studies of the human brain. However, no reference standards currently exist to quantify individual differences in neuroimaging metrics over time, in contrast to growth charts for anthropometric traits such as height and weight1. Here we assemble an interactive open resource to benchmark brain morphology derived from any current or future sample of MRI data (http://www.brainchart.io/). With the goal of basing these reference charts on the largest and most inclusive dataset available, acknowledging limitations due to known biases of MRI studies relative to the diversity of the global population, we aggregated 123,984 MRI scans, across more than 100 primary studies, from 101,457 human participants between 115 days post-conception to 100 years of age. MRI metrics were quantified by centile scores, relative to non-linear trajectories2 of brain structural changes, and rates of change, over the lifespan. Brain charts identified previously unreported neurodevelopmental milestones3, showed high stability of individuals across longitudinal assessments, and demonstrated robustness to technical and methodological differences between primary studies. Centile scores showed increased heritability compared with non-centiled MRI phenotypes, and provided a standardized measure of atypical brain structure that revealed patterns of neuroanatomical variation across neurological and psychiatric disorders. In summary, brain charts are an essential step towards robust quantification of individual variation benchmarked to normative trajectories in multiple, commonly used neuroimaging phenotypes.
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