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Ciais P, Tan J, Wang X, Roedenbeck C, Chevallier F, Piao SL, Moriarty R, Broquet G, Le Quéré C, Canadell JG, Peng S, Poulter B, Liu Z, Tans P. Five decades of northern land carbon uptake revealed by the interhemispheric CO2 gradient. Nature 2019; 568:221-225. [DOI: 10.1038/s41586-019-1078-6] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 01/25/2019] [Indexed: 11/09/2022]
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Peng S, Yuan X, Lin W, Cai C, Zhang L. pH-responsive controlled release of mesoporous silica nanoparticles capped with Schiff base copolymer gatekeepers: Experiment and molecular dynamics simulation. Colloids Surf B Biointerfaces 2019; 176:394-403. [PMID: 30660963 DOI: 10.1016/j.colsurfb.2019.01.024] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 01/02/2019] [Accepted: 01/10/2019] [Indexed: 01/14/2023]
Abstract
In this study, Schiff-base copolymer coating and mesoporous silica nanoparticles (Polymer@MSN) were synthesized by ARGET ATRP and sol-gel method respectively. Imine bonds acted as the pH-cleavable linker between copolymer gatekeepers and MSN to promote the controlled-release performance of DOX. The DOX-loaded nanoparticles (Polymer@MSN-DOX) were spherical with a diameter of approximately 150 nm. At pH 5.0 (pH of intracellular environment), the cumulative release of DOX within 72 h was 45% higher than that at pH 7.4 (normal physiological environment) due to the cleavage of imine bonds, showing obvious pH-responsive drug release performance. Confocal microscopy studies and in vitro cytotoxicity results revealed that Polymer@MSN-DOX could smoothly enter HepG2 cells to release DOX and show a high cytotoxicity. Noted specially that molecular dynamics simulations were applied to investigate the microcosmic adsorption/diffusion interaction between drug molecules and MSN. Simulation results showed that the driving force of DOX adsorption in mesoporous channels was originated from hydrogen bonding interaction between the mesoporous wall and DOX molecules and π-π conjugated interaction between benzene rings in addition to concentration differences. The structural design of composite nanocarriers in this research could provide guidance for the application of pH-responsive MSN-based drug delivery system.
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De Blasio M, Tate M, Prakoso D, Willis A, Deo M, Walsh J, Cohen C, Rofe A, Peng S, Qin C, Kiriazis H, Donner D, Watson A, Ritchie R. Defining the Characteristics of a More Clinically Relevant Mouse Model of Type-2 Diabetes (T2D)-Induced Cardiomyopathy. Heart Lung Circ 2019. [DOI: 10.1016/j.hlc.2019.06.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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54
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Peng S, Suitor J, Gilligan M. Successful Aging. Innov Aging 2018. [DOI: 10.1093/geroni/igy023.178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hou Y, Rurka M, Peng S. SIBLING COMPENSATION IN SUPPORTING NON-CORESIDENTIAL MOTHERS IN CHINA: THE INTERPLAY OF OWN AND SIBLING(S)’ GENDER. Innov Aging 2018. [DOI: 10.1093/geroni/igy031.3683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Chu WH, Peng S. [Research progress in the risk factors of juvenile idiopathic arthritis-associated uveitis and its severe visual outcome]. ZHONGHUA ER KE ZA ZHI = CHINESE JOURNAL OF PEDIATRICS 2018; 56:786-789. [PMID: 30293288 DOI: 10.3760/cma.j.issn.0578-1310.2018.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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57
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Westmoreland C, Cooper S, Guo J, Li J, Middleton A, Reynolds J, Peng S, van de Water B, White A, Yuan H, Zhang Q. Mitochondrial toxicity and oxidative stress: Defining the tipping point between adaptive and adverse effects for consumer safety risk assessment. Toxicol Lett 2018. [DOI: 10.1016/j.toxlet.2018.06.1138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Moratz C, Robbins R, Eickhoff J, Edison J, Lui H, Peng S. Regulation of systemic tissue injury by coagulation inhibitors in B6.MRL/lpr autoimmune mice. Clin Immunol 2018; 197:169-178. [PMID: 30266629 DOI: 10.1016/j.clim.2018.08.010] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 08/23/2018] [Accepted: 08/23/2018] [Indexed: 02/07/2023]
Abstract
Impaired fibrinolysis and complement activation in Systemic Lupus Erythematosus contributes to disease amplification including increased risk of thrombosis and tissue Ischemia/Reperfusion (IR) injury. Previous work has demonstrated complement is a key regulator of tissue injury. In these studies inhibitors had varying efficacies in attenuating injury at primary versus systemic sites, such as lung. In this study the role of coagulation factors in tissue injury and complement function was evaluated. Tissue Factor Pathway Inhibitor (TFPI), an extrinsic pathway inhibitor, and Anti-Thrombin III, the downstream common pathway inhibitor, were utilized in this study. TFPI was more effective in attenuated primary intestinal tissue injury. However both attenuated systemic lung injury. However, ATIII treatment resulting in enhanced degradation of C3 split products in lung tissue compared to TFPI. This work delineates the influence of specific early and late coagulation pathway components during initial tissue injury versus later distal systemic tissue injury mechanism.
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Ji Y, Yang K, Peng S, Chen S, Xiang B, Xu Z, Li Y, Wang Q, Wang C, Xia C, Li L, Liu X, Lu G, Yang G, Wu H. Kaposiform haemangioendothelioma: clinical features, complications and risk factors for Kasabach-Merritt phenomenon. Br J Dermatol 2018; 179:457-463. [PMID: 29603128 PMCID: PMC11032113 DOI: 10.1111/bjd.16601] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2018] [Indexed: 02/05/2023]
Abstract
BACKGROUND Few studies have reported the clinical features, complications and predictors of Kasabach-Merritt phenomenon (KMP) associated with Kaposiform haemangioendothelioma (KHE). OBJECTIVES To determine the clinical characteristics present at diagnosis and to identify features that may aid clinicians in managing KHE. METHODS We conducted a cohort study of 146 patients diagnosed with KHE. RESULTS KHE precursors or lesions were present at birth in 52·1% of patients. In 91·8% of patients, lesions developed within the first year of life. The median age at diagnosis of KHE was 2·3 months (interquartile range 1·0-6·0). The extremities were the dominant location, representing 50·7% of all KHEs. Among KHEs in the cohort, 63·0% were mixed lesions (cutaneous lesions with deep infiltration). Approximately 70% of patients showed KMP. A KHE diagnosis was delayed by ≥ 1 month in 65·7% of patients with KMP. Patients with KMP were more likely to have major complications than patients without KMP (P = 0·023). Young age (< 6 months), trunk location, large lesion size (> 5·0 cm) and mixed lesion type were associated with KMP in a univariate analysis. In the multivariate analysis, only age [odds ratio (OR) 11·9, 95% confidence interval (CI) 4·07-34·8; P < 0·001], large lesion size (OR 5·08, 95% CI 2·24-11·5; P < 0·001) and mixed lesion type (OR 2·96, 95% CI 1·23-7·13; P = 0·016) were associated with KMP. CONCLUSIONS Most KHEs appeared before 12 months of age. KHEs are associated with various major complications, which can occur in combination and develop early in the disease process. Young age, large lesion size and mixed lesion type are important predictors of KMP.
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Yang T, Peng S, Barnett R, Wu D, Feng X, Oliffe JL. Association between bedtime and self-reported illness among college students: a representative nationwide study of China. Public Health 2018; 159:67-69. [PMID: 29580561 DOI: 10.1016/j.puhe.2018.01.035] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 10/19/2017] [Accepted: 01/29/2018] [Indexed: 10/17/2022]
Abstract
OBJECTIVE This study was to examine the association between bedtime and self-reported illness among Chinese college students. METHODS Participants were 11,942 students, who were identified through a multistage survey sampling process. Sleep and illness status were obtained by self report. Both unadjusted and adjusted methods were considered in the analyses. RESULTS The logistic regression model found that late bedtime was positively associated with self reported short and long-term illness (OR: 3.70 and 1, 79) after adjusting for demographic characteristics, short sleep duration, and mental disorders. CONCLUSIONS This study is the first to find a positive relationship between late bedtime and self reported illnesses in China or elsewhere. The findings underscore the importance of educating college students about the importance of sleep.
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Xiong D, Zhang X, Peng S, Gu H, Zhang L. Smart pH-sensitive micelles based on redox degradable polymers as DOX/GNPs carriers for controlled drug release and CT imaging. Colloids Surf B Biointerfaces 2018; 163:29-40. [DOI: 10.1016/j.colsurfb.2017.12.008] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Revised: 11/29/2017] [Accepted: 12/07/2017] [Indexed: 12/21/2022]
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62
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Wang Z, Wang D, Yang D, Zhen W, Zhang J, Peng S. The effect of icariin on bone metabolism and its potential clinical application. Osteoporos Int 2018; 29:535-544. [PMID: 29110063 DOI: 10.1007/s00198-017-4255-1] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 10/04/2017] [Indexed: 12/28/2022]
Abstract
Osteoporosis is a bone disease characterized by reduced bone mass, which leads to increased risk of bone fractures, and poses a significant risk to public health, especially in the elderly population. The traditional Chinese medicinal herb Epimedii has been utilized for centuries to treat bone fracture and bone loss. Icariin is a prenylated flavonol glycoside isolated from Epimedium herb, and has been shown to be the main bioactive component. This review provides a comprehensive survey of previous studies on icariin, including its structure and function, effect on bone metabolism, and potential for clinical application. These studies show that icariin promotes bone formation by stimulating osteogenic differentiation of BMSCs (bone marrow-derived mesenchymal stem cells), while inhibiting osteoclastogenic differentiation and the bone resorption activity of osteoclasts. Furthermore, icariin has been shown to be more potent than other flavonoid compounds in promoting osteogenic differentiation and maturation of osteoblasts. A 24-month randomized double-blind placebo-controlled clinical trial reported that icariin was effective in preventing postmenopausal osteoporosis with relatively low side effects. In conclusion, icariin may represent a class of flavonoids with bone-promoting activity, which could be used as potential treatment of postmenopausal osteoporosis.
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Zhu L, Feng H, Jia JD, Peng S, Li YQ, Shao JF, He XF, Guan Y, Guo H, Lin ZB, Chen G. [Clinical efficacy of tonsillectomy in renal transplant patients with recurrent IgA nephropathy]. ZHONGHUA YI XUE ZA ZHI 2018; 98:176-180. [PMID: 29374910 DOI: 10.3760/cma.j.issn.0376-2491.2018.03.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the therapeutic efficacy of tonsillectomy for patients with recurrence of IgA nephropathy (IgAN) after kidney transplantation. Methods: From May 2014, tonsillectomy was performed in 11 renal transplant patients with biopsy-proved recurrent IgAN. In a median follow-up of 14 (4-38) months, data of proteinuria, hematuria, estimated glomerular filtration rate (eGFR), and serum levels of IgA in these patients were compared before and after tonsillectomy.Patient's survival and renal graft survival were also summarized. Results: A remission of proteinuria was observed in 8 patients after tonsillectomy, and this status maintained well in the subsequent follow-up.Three patients had no or minimal reduction of proteinuria after tonsillectomy and returned to dialysis within 1 year after tonsillectomy.Possible causes could be severe primary IgAN of crescentric glomerulonephritis, IgAN recurrence in kidney retransplantation, and late tonsillectomy after IgAN recurrence.Serum levels of IgA significant decreased and no patients developed acute rejection or infection after tonsillectomy.In the 1-year follow-up, no patients died and grafts survived well in 8 out of 11 patients. Conclusions: Tonsillectomy may represent an effective and reliable way to treat recurrence IgAN after kidney transplantation, and may be applied widely in the future clinical management. However, early intervention is critical and effects may depend on the pathological features of primary IgAN.
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Lin D, Liang Y, Zheng D, Chen Y, Jing X, Lei M, Zeng Z, Zhou T, Wu X, Peng S, Huang K, Yang L, Xiao S, Liu J, Tao E. Novel biomolecular information in rotenone-induced cellular model of Parkinson's disease. Gene 2018; 647:244-260. [PMID: 29331484 DOI: 10.1016/j.gene.2018.01.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Revised: 12/19/2017] [Accepted: 01/05/2018] [Indexed: 01/12/2023]
Abstract
In order to uncover the remarkable pathogenic genes or molecular pathological process in Parkinson's disease (PD), we employed a microarray analysis upon the cellular PD model induced by rotenone. Compared to the control group, 2174 genes were screened out to be expressed differently in the rotenone-induced group by certain criterion. GO analysis and the pathways analysis showed the significant enrichment of genes that were associated with the biological process of cell cycle, apoptotic process, organelle fusion, mitochondrial lesion, endoplasmic reticulum stress and so on. Among these significant DE genes, some were sorted out to be involved in cell cycle and protein processing in endoplasmic reticulum. As the PPI network analysis showed, the interaction relationship of the DEGs involved in the process of protein generation in endoplasmic reticulum(ER) was clearly showed up. As a prediction, we emphasized the genes EDEM1, ATF4, TRAF2 might play central roles in the protein misfolding process during the progression of Parkinson's disease and these new-found genes might be the future research focus and therapeutic targets in PD.
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65
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Peng S, Liang Y, Jing X, Chen Y, Lin D, Bu C, Zheng D, Huang K, Lei M, Xiao S, Yang L, Liu J, Huang S, Tao E. The MRI-based brain structure measurements in Parkinson’s disease and Parkinson-plus syndromes. Parkinsonism Relat Disord 2018. [DOI: 10.1016/j.parkreldis.2017.11.320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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66
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Xu J, Sun S, Wang Z, Peng S, Hu S, Zhang L. pH-Induced evolution of surface patterns in micelles assembled from dirhamnolipids: dissipative particle dynamics simulation. Phys Chem Chem Phys 2018; 20:9460-9470. [DOI: 10.1039/c8cp00751a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Dissipative particle dynamics (DPD) simulation is used to study the effect of pH on the morphological transition in micelles assembled from dirhamnolipids (diRLs), and analyze the pH-driven mechanism and influence factors of micellar surface patterns.
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67
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Lin D, Liang Y, Jing X, Chen Y, Lei M, Zeng Z, Zhou T, Wu X, Peng S, Zheng D, Huang K, Yang L, Xiao S, Liu J, Tao E. Microarray analysis of an synthetic α-synuclein induced cellular model reveals the expression profile of long non-coding RNA in Parkinson's disease. Brain Res 2017; 1678:384-396. [PMID: 29137975 DOI: 10.1016/j.brainres.2017.11.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Revised: 11/07/2017] [Accepted: 11/08/2017] [Indexed: 01/10/2023]
Abstract
Long non-coding RNAs (lncRNAs) are a new research focus that are reported to influence the pathogenetic process of neurodegenerative disorders. To uncover new disease-associated genes and their relevant mechanisms, we carried out a gene microarray analysis based on a Parkinson's disease (PD) in vitro model induced by α-synuclein oligomers. This cellular model induced by 25 μmol/L α-synuclein oligomers has been confirmed to show the stable, transmissible neurotoxicity of α-synuclein, a typical PD pathological marker. And several differentially expressed lncRNAs and mRNAs were identified in this model, such as G046036, G030771, AC009365.4, RPS14P3, CTB-11I22.1, and G007549. Subsequent ceRNA analysis determined the potential relationships between these lncRNAs and their associated mRNAs and microRNAs. The results of the present study widen our horizon of PD susceptibility genes and provide new pathways towards efficient diagnostic biomarkers and therapeutic targets for PD.
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Peng S, Chu Z, Lu J, Li D, Wang Y, Yang S, Zhang Y. Heterologous Expression of Chaperones from Hyperthermophilic Archaea Inhibits Aminoglycoside-Induced Protein Misfolding in Escherichia coli. BIOCHEMISTRY (MOSCOW) 2017; 82:1169-1175. [PMID: 29037137 DOI: 10.1134/s0006297917100091] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Aminoglycoside antibiotics affect protein translation fidelity and lead to protein aggregation and an increase in intracellular oxidative stress level as well. The overexpression of the chaperonin GroEL/GroES system promotes short-term tolerance to aminoglycosides in Escherichia coli. Here, we demonstrated that the coexpression of prefoldin or Hsp60 originating from the hyperthermophilic archaeon Pyrococcus furiosus in E. coli cells can rescue cell growth and inhibit protein aggregation induced by streptomycin exposure. The results of our study show that hyperthermophilic chaperones endow E. coli with a higher tolerance to streptomycin than the GroEL/GroES system, and that they exert better effects on the reduction of intracellular protein misfolding, indicating that these chaperones have unique features and functions.
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69
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Hirano S, Ma Y, Peng S, Shimada H, Shinotoh H, Endo H, Nakano Y, Li H, Higuchi M, Kuwabara S, Eidelberg D, Suhara T. Abnormal metabolic brain networks in progressive supranuclear palsy and corticobasal syndrome: diagnostic performance using perfusion spect scans in patients with movement disorders. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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70
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Xiong D, Zhang R, Luo W, Gu H, Peng S, Zhang L. Hydrazone cross-linked micelles based on redox degradable block copolymer for enhanced stability and controlled drug release. REACT FUNCT POLYM 2017. [DOI: 10.1016/j.reactfunctpolym.2017.08.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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71
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Luo Q, Guo X, Peng S, Luo W, Tian F, Yu P, Zou Y. The association between MICA/MICB polymorphism and respiratory syncytial virus infection in children. Int J Immunogenet 2017; 44:328-336. [PMID: 28925058 DOI: 10.1111/iji.12338] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 08/10/2017] [Accepted: 08/27/2017] [Indexed: 12/22/2022]
Abstract
MICA/MICB gene polymorphisms are related to several cancers and infectious diseases, but there are no reports on the association between MICA/MICB gene polymorphisms and respiratory syncytial virus (RSV) infection. To clarify the association between MICA/MICB gene polymorphisms and infection of RSV in children, we collected fresh blood samples from paediatric patients with and without pneumonia after RSV infection. The MICA/MICB alleles were characterized by PCR sequence-specific primers (PCR-SSP) and PCR sequence-based genotyping (PCR-SBT), and then, the frequency of the MICA/MICB alleles and haplotypes was calculated. The results showed that the frequencies of MICA*002:01 and MICA-A9 in RSV-infected patients were significantly lower than in controls (9% vs. 20%, pc = 0.04). The allele frequency of MICA*002:01 in pneumonia patients (8%) and nonpneumonia patients (9%) was significantly lower than in controls (20%, pc = 0.02). MICA*002:01-MICB*008(Δrel = 0.616), MICA*009-MICB*016 (Δrel = 0.506), and MICA*045-MICB*014 (Δrel = 0.700) showed linkage disequilibrium in patients infected with RSV. The haplotype frequency of MICA*002:01-MICB*005:02 in RSV-infected patients was significantly lower than in controls (10% vs. 16%, pc = 0.033). In conclusion, allele MICA*002:01/A9 and haplotype MICA*002:01-MICB*005:02 were negatively associated with RSV respiratory tract infections.
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Huntzinger DN, Michalak AM, Schwalm C, Ciais P, King AW, Fang Y, Schaefer K, Wei Y, Cook RB, Fisher JB, Hayes D, Huang M, Ito A, Jain AK, Lei H, Lu C, Maignan F, Mao J, Parazoo N, Peng S, Poulter B, Ricciuto D, Shi X, Tian H, Wang W, Zeng N, Zhao F. Uncertainty in the response of terrestrial carbon sink to environmental drivers undermines carbon-climate feedback predictions. Sci Rep 2017; 7:4765. [PMID: 28684755 PMCID: PMC5500546 DOI: 10.1038/s41598-017-03818-2] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 05/05/2017] [Indexed: 11/17/2022] Open
Abstract
Terrestrial ecosystems play a vital role in regulating the accumulation of carbon (C) in the atmosphere. Understanding the factors controlling land C uptake is critical for reducing uncertainties in projections of future climate. The relative importance of changing climate, rising atmospheric CO2, and other factors, however, remains unclear despite decades of research. Here, we use an ensemble of land models to show that models disagree on the primary driver of cumulative C uptake for 85% of vegetated land area. Disagreement is largest in model sensitivity to rising atmospheric CO2 which shows almost twice the variability in cumulative land uptake since 1901 (1 s.d. of 212.8 PgC vs. 138.5 PgC, respectively). We find that variability in CO2 and temperature sensitivity is attributable, in part, to their compensatory effects on C uptake, whereby comparable estimates of C uptake can arise by invoking different sensitivities to key environmental conditions. Conversely, divergent estimates of C uptake can occur despite being based on the same environmental sensitivities. Together, these findings imply an important limitation to the predictability of C cycling and climate under unprecedented environmental conditions. We suggest that the carbon modeling community prioritize a probabilistic multi-model approach to generate more robust C cycle projections.
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Suitor J, Gilligan M, Peng S, Meyer J, Con G, Pillemer K. CONSEQUENCES OF ADULT CHILDREN’S PERCEPTIONS OF MATERNAL DIFFERENTIAL TREATMENT ACROSS TIME. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.5146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Suitor J, Gilligan M, Rurka M, Peng S, Pillemer K. IT’S REALLY NOT ME? ADULT CHILDRENS’ MISPERCEPTIONS OF MOTHERS’ FAVORITISM AND DISFAVORITISM. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.2198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Gerasimenko JV, Peng S, Tsugorka T, Gerasimenko OV. Ca 2+ signalling underlying pancreatitis. Cell Calcium 2017; 70:95-101. [PMID: 28552244 DOI: 10.1016/j.ceca.2017.05.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 05/16/2017] [Accepted: 05/16/2017] [Indexed: 12/13/2022]
Abstract
In spite of significant scientific progress in recent years, acute pancreatitis (AP) is still a dangerous and in up to 5% of cases deadly disease with no specific cure. It is self-resolved in the majority of cases, but could result in chronic pancreatitis (CP) and increased risk of pancreatic cancer (PC). One of the early events in AP is premature activation of digestive pro-enzymes, including trypsinogen, inside pancreatic acinar cells (PACs) due to an excessive rise in the cytosolic Ca2+ concentration, which is the result of Ca2+ release from internal stores followed by Ca2+ entry through the store operated Ca2+ channels in the plasma membrane. The leading causes of AP are high alcohol intake and biliary disease with gallstones obstruction leading to bile reflux into the pancreatic duct. Recently attention in this area of research turned to another cause of AP - Asparaginase based drugs - which have been used quite successfully in treatments of childhood acute lymphoblastic leukaemia (ALL). Unfortunately, Asparaginase is implicated in triggering AP in 5-10% of cases as a side effect of the anti-cancer therapy. The main features of Asparaginase-elicited AP (AAP) were found to be remarkably similar to AP induced by alcohol metabolites and bile acids. Several potential therapeutic avenues in counteracting AAP have been suggested and could also be useful for dealing with AP induced by other causes. Another interesting development in this field includes recent research related to pancreatic stellate cells (PSCs) that are much less studied in their natural environment but nevertheless critically involved in AP, CP and PC. This review will attempt to evaluate developments, approaches and potential therapies for AP and discuss links to other relevant diseases.
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