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https://www.readbyqxmd.com/read/28107679/meta-analysis-of-the-relationship-between-impulsivity-and-substance-related-cognitive-biases
#1
REVIEW
Daniel Leung, Petra K Staiger, Melissa Hayden, Jarrad A G Lum, Kate Hall, Victoria Manning, Antonio Verdejo-Garcia
BACKGROUND: Evidence indicates that substance-related cognitive biases (attentional, memory, and approach bias) contribute to the maintenance and development of substance misuse. Impulsivity has been suggested to influence how cognitive biases contribute to substance misuse, possibly by biasing incentive salience attribution processes. However, the strength and moderators of the relationship between impulsivity and substance-related cognitive biases has yet to be empirically examined...
January 5, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28107549/detection-of-alect2-amyloidosis-by-positron-emission-tomography-computed-tomography-imaging-with-florbetapir
#2
Nelson Leung, Marina Ramirez-Alvarado, Samih H Nasr, Bradley J Kemp, Geoffrey B Johnson
No abstract text is available yet for this article.
January 20, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28107393/t-cell-subset-and-stimulation-strength-dependent-modulation-of-t-cell-activation-by-kv1-3-blockers
#3
Wai-Ping Fung-Leung, Wilson Edwards, Yi Liu, Karen Ngo, Julianty Angsana, Glenda Castro, Nancy Wu, Xuejun Liu, Ronald V Swanson, Alan D Wickenden
Kv1.3 is a voltage-gated potassium channel expressed on T cells that plays an important role in T cell activation. Previous studies have shown that blocking Kv1.3 channels in human T cells during activation results in reduced calcium entry, cytokine production, and proliferation. The aim of the present study was to further explore the effects of Kv1.3 blockers on the response of different human T cell subsets under various stimulation conditions. Our studies show that, unlike the immune suppressor cyclosporine A, the inhibitory effect of Kv1...
2017: PloS One
https://www.readbyqxmd.com/read/28107181/cyclin-e-overexpression-as-a-biomarker-for-combination-treatment-strategies-in-inflammatory-breast-cancer
#4
Angela Alexander, Cansu Karakas, Xian Chen, Jason P W Carey, Min Yi, Melissa Bondy, Patricia Thompson, Kwok Leung Cheung, Ian O Ellis, Yun Gong, Savitri Krishnamurthy, Ricardo H Alvarez, Naoto T Ueno, Kelly K Hunt, Khandan Keyomarsi
Inflammatory breast cancer (IBC) is a virulent form of breast cancer, and novel treatment strategies are urgently needed. Immunohistochemical analysis of tumors from women with a clinical diagnosis of IBC (n = 147) and those with non-IBC breast cancer (n = 2510) revealed that, whereas in non-IBC cases cytoplasmic cyclin E was highly correlated with poor prognosis (P < 0.001), in IBC cases both nuclear and cytoplasmic cyclin E were indicative of poor prognosis. These results underscored the utility of the cyclin E/CDK2 complex as a novel target for treatment...
January 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28106808/anti-fatigue-effects-of-the-unique-polysaccharide-marker-of-dendrobium-officinale-on-balb-c-mice
#5
Wei Wei, Zhi-Peng Li, Tong Zhu, Hau-Yee Fung, Tin-Long Wong, Xin Wen, Dik-Lung Ma, Chung-Hang Leung, Quan-Bin Han
Dendrobium officinale extract shows potent anti-fatigue effects; however, the active substance responsible for these effects remains undetermined. A glucomannan with a huge molecular size of 730 kDa, called DOP, was identified as the unique authentication marker of this expensive herb. DOP exhibited immunomodulating effects on macrophages and lymphocytes in our previous study. Clinical reports also showed that people with fatigue syndrome have a disturbed immune system. Because DOP is the unique and dominant component of D...
January 18, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28106172/carrageenan-activates-monocytes-via-type-specific-binding-with-interleukin-8-an-implication-for-design-of-immuno-active-biomaterials
#6
Weng-I Chan, Guangpan Zhang, Xin Li, Chung-Hang Leung, Dik-Lung Ma, Lei Dong, Chunming Wang
Polymers that can activate the immune system may become useful biomaterials tools, given that the mechanisms underlying their actions are well understood. Herein, we report a novel type of interaction between polymers and immune cells - in studying the influence of the three major types of carrageenan (CGN) polysaccharides on monocyte behaviour in vitro, we found only the λ-type induced monocyte adhesion and this action requires the presence of an adequate amount of serum. Further analyses indicated λ-CGN bound interleukin-8 (IL-8) in the serum and activated the cultured monocytes through an IL-8-dependent pathway...
January 20, 2017: Biomaterials Science
https://www.readbyqxmd.com/read/28105633/chinese-malaysian-adolescents-social-cognitive-reasoning-regarding-filial-piety-dilemmas
#7
Charissa S L Cheah, Christy Y Y Leung, Sevgi Bayram Özdemir
This study examined the social-cognitive reasoning of 52 Chinese Malaysian preadolescents (9-12 years old; M = 11.02, SD = 0.94) and 68 adolescents (13-18 years old; M = 14.76, SD = 1.39) in resolving filial dilemmas within the personal and moral domain. Preadolescents deferred to parental authority, whereas adolescents endorsed filial obligation reasoning to justify compliance in the personal domain. Both appealed to filial obligation, pragmatic, or welfare and safety reasoning to justify compliance but fairness or rights reasoning to justify their noncompliance, for the moral issue...
January 20, 2017: Child Development
https://www.readbyqxmd.com/read/28105274/design-synthesis-and-evaluation-of-novel-and-selective-g-protein-coupled-receptor-120-gpr120-spirocyclic-agonists
#8
Jason M Cox, Hong D Chu, Mariappan V Chelliah, John S Debenham, Keith Eagen, Ping Lan, Matthew Lombardo, Clare London, Michael A Plotkin, Unmesh Shah, Zhongxiang Sun, Henry M Vaccaro, Srikanth Venkatraman, Takao Suzuki, Nengxue Wang, Eric R Ashley, Alejandro Crespo, Maria Madeira, Dennis H Leung, Candice Alleyne, Aimie M Ogawa, Sarah Souza, Brande Thomas-Fowlkes, Jerry Di Salvo, Adam Weinglass, Melissa Kirkland, Michele Pachanski, Mary Ann Powles, Effie Tozzo, Taro E Akiyama, Feroze Ujjainwalla, James R Tata, Christopher J Sinz
Type 2 diabetes mellitus (T2DM) is an ever increasing worldwide epidemic, and the identification of safe and effective insulin sensitizers, absent of weight gain, has been a long-standing goal of diabetes research. G-protein coupled receptor 120 (GPR120) has recently emerged as a potential therapeutic target for treating T2DM. Natural occurring, and more recently, synthetic agonists have been associated with insulin sensitizing, anti-inflammatory, and fat metabolism effects. Herein we describe the design, synthesis, and evaluation of a novel spirocyclic GPR120 agonist series, which culminated in the discovery of potent and selective agonist 14...
January 12, 2017: ACS Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28104474/ultrasound-enhanced-penetration-through-sclera-depends-on-frequency-of-sonication-and-size-of-macromolecules
#9
Ying Chau, Wai Leung Langston Suen, Ho Yan Tse, Hoi Sang Wong
We previously employed ultrasound as a needleless approach to deliver macromolecules via the transscleral route to the back of the eye in live animals (Suen et al., 2013). Here, we investigated the nature of the ultrasound-enhanced transport through sclera, the outermost barrier in the transscleral route. Thus, the possible role of cavitation from ultrasound was explored; its effect during and after sonication on scleral penetration was measured; and the dependence on the size of macromolecules was determined...
January 16, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28103404/hermeneutic-phenomenological-analysis-the-possibility-beyond-actuality-in-thematic-analysis
#10
Ken H M Ho, Vico C L Chiang, Doris Leung
AIMS: This paper discusses the ways researchers may become open to manifold interpretations of lived experience through thematic analysis that follows the tradition of hermeneutic phenomenology. BACKGROUND: Martin Heidegger's thinking about historical contexts of understandings and the notions of 'alētheia' and 'techne' disclose what he called meaning of lived experience, as the 'unchanging Being of changing beings'. While these notions remain central to hermeneutic phenomenological research, novice phenomenologists usually face the problem of how to incorporate these philosophical tenets into thematic analysis...
January 19, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28102888/genetic-polymorphisms-in-estrogen-metabolic-pathway-associated-with-risks-of-alzheimer-s-disease-evidence-from-a-southern-chinese-population
#11
Lu Hua Chen, Yan Hui Fan, Patrick Yu Ping Kao, Deborah Tip Yin Ho, Joyce Cheuk Tung Ha, Leung Wing Chu, You-Qiang Song
OBJECTIVES: To investigate whether genetic variations on the estrogen metabolic pathway would be associated with risk of Alzheimer's disease (AD). DESIGN: Cross-sectional study. SETTING: Individuals were recruited at the Memory Clinic, Queen Mary Hospital, Hong Kong. PARTICIPANTS: Chinese individuals with (n = 426) and without (n = 350) AD. MEASUREMENTS: All subjects underwent a standardized cognitive assessment and genotyping of four candidate genes on the estrogen metabolic pathway (estrogen receptor α gene (ESR1), estrogen receptor β gene (ESR2), cytochrome P450 19A1 gene (CYP19A1), cytochrome P450 11A1 gene (CYP11A1))...
January 19, 2017: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/28102712/bone-morphogenetic-protein-2-and-7-mediate-the-anabolic-function-of-nucleus-pulposus-cells-with-discrete-mechanisms
#12
Victor Yl Leung, Lixiong Zhou, Wai-Kit Tam, Yi Sun, Fengjuan Lv, Guangqian Zhou, Kenneth Mc Cheung
Bone morphogenetic proteins (BMPs) play roles in promoting cell anabolism, especially extracellular matrix production. The difference between BMP members in their capacity to modulate intervertebral disc cell activity is yet to be defined. BMP-7/OP-1 has been shown to retard disc degeneration. We compared the activity of BMP-7 with BMP-2 on nucleus pulposus (NP) cell phenotype and function, and investigated how they differentially affect the gene expression profiles of signaling cascade components in human NP cells under degenerative states...
January 19, 2017: Connective Tissue Research
https://www.readbyqxmd.com/read/28101526/rapamycin-resistant-mtor-activity-is-required-for-sensory-axon-regeneration-induced-by-a-conditioning-lesion
#13
Weitao Chen, Na Lu, Yue Ding, Yuan Wang, Leung Ting Chan, Xu Wang, Xin Gao, Songshan Jiang, Kai Liu
Neuronal mammalian target of rapamycin (mTOR) activity is a critical determinant of the intrinsic regenerative ability of mature neurons in the adult central nervous system (CNS). However, whether its action also applies to peripheral nervous system (PNS) neurons after injury remains elusive. To address this issue unambiguously, we used genetic approaches to determine the role of mTOR signaling in sensory axon regeneration in mice. We showed that deleting mTOR in dorsal root ganglion (DRG) neurons suppressed the axon regeneration induced by conditioning lesions...
November 2016: ENeuro
https://www.readbyqxmd.com/read/28100694/adpribodb-the-database-of-adp-ribosylated-proteins
#14
Christina A Vivelo, Ricky Wat, Charul Agrawal, Hui Yi Tee, Anthony K L Leung
No abstract text is available yet for this article.
January 18, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28100223/surface-attachment-promoted-by-the-actomyosin-system-of-toxoplasma-gondii-is-important-for-efficient-gliding-motility-and-invasion
#15
Jamie A Whitelaw, Fernanda Latorre-Barragan, Simon Gras, Gurman S Pall, Jacqueline M Leung, Aoife Heaslip, Saskia Egarter, Nicole Andenmatten, Shane R Nelson, David M Warshaw, Gary E Ward, Markus Meissner
BACKGROUND: Apicomplexan parasites employ a unique form of movement, termed gliding motility, in order to invade the host cell. This movement depends on the parasite's actomyosin system, which is thought to generate the force during gliding. However, recent evidence questions the exact molecular role of this system, since mutants for core components of the gliding machinery, such as parasite actin or subunits of the MyoA-motor complex (the glideosome), remain motile and invasive, albeit at significantly reduced efficiencies...
January 18, 2017: BMC Biology
https://www.readbyqxmd.com/read/28100156/transcatheter-embolization-of-type-i-endoleaks-associated-with-endovascular-abdominal-aortic-aneurysm-repair-using-ethylene-vinyl-alcohol-copolymer
#16
Assaf Graif, Ansar Z Vance, Mark J Garcia, Kevin T Lie, Michael K McGarry, Daniel A Leung
PURPOSE: To evaluate the feasibility, safety, and outcome of transcatheter embolization using ethylene vinyl alcohol copolymer (EVOH) of type I endoleaks associated with endovascular abdominal aortic aneurysm repair. PATIENT POPULATION AND METHODS: Retrospective chart review was performed to identify 8 consecutive patients who had undergone EVOH embolization for type I endoleaks between 2012 and 2015. The primary approach used to access the endoleak was the perigraft technique, where the endoleak itself is catheterized at the anastomotic site...
January 2017: Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28100006/the-fingerprint-of-antimitochondrial-antibodies-and-the-etiology-of-primary-biliary-cholangitis
#17
Zongwen Shuai, Jinjun Wang, Madhu Badamagunta, Jinjung Choi, Guoxiang Yang, Weici Zhang, Thomas P Kenny, Kathryn Guggenheim, Mark J Kurth, Aftab A Ansari, John Voss, Ross L Coppel, Pietro Invernizzi, Patrick S C Leung, M Eric Gershwin
The identification of environmental factors that lead to loss of tolerance has been coined the Holy Grail of autoimmunity. Our work has focused on the reactivity of antimitochondrial autoantibodies (AMA) to chemical xenobiotics and has hypothesized that a modified peptide within PDC-E2, the major mitochondrial autoantigen, will have been immunologically recognized at the time of loss of tolerance. Herein we successfully applied intein technology to construct a PDC-E2 protein fragment containing amino acid residues 177-314 of PDC-E2 by joining a recombinant peptide spanning residues 177 to 252 (PDC-228) with a 62 residue synthetic peptide from 253 to 314 (PP), which encompasses PDC-E2 ILD...
January 18, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28099262/angiotensin-ii-type-2-receptor-activation-with-compound-21-augments-islet-function-and-regeneration-in-streptozotocin-induced-neonatal-rats-and-human-pancreatic-progenitor-cells
#18
Lin Wang, Yi Wang, Xing Yu Li, Po Sing Leung
OBJECTIVES: We investigated the effects of compound 21 (C21), a nonpeptide angiotensin II type 2 receptor agonist, on islet cell function and survival in streptozotocin (STZ)-treated neonatal rats and human pancreatic progenitor cells. METHODS: Neonatal rats were randomized into 5 groups, including a control, an STZ (100 mg/kg, intraperitoneally), and 3 STZ + C21 (0.25, 0.5, and 1 mg/kg per day for 7 days, intraperitoneally) groups. Body weight and blood glucose were monitored daily...
January 18, 2017: Pancreas
https://www.readbyqxmd.com/read/28098292/an-andrographolide-derivative-agp-26b-exhibiting-anti-angiogenic-activity-in-huvecs-and-zebrafish-via-blocking-the-vegfa-vegfr2-signaling-pathway
#19
Bin Huang, Yuran Peng, Jingjing Li, Shang Li, Yicheng Sun, Decai Wang, Binrui Yang, Judy Yuet-Wa Chan, Huidong Yu, George Pak-Heng Leung, Maggie Pui-Man Hoi, Guo-Chun Zhou, Simon Ming-Yuen Lee
The aim of this study is to investigate the anti-angiogenic properties of andrographolide derivatives AGP-26a (12β-isomer), AGP-26b (12α-isomer) and AGP-26 (4 : 1 mixture of AGP-26a and AGP-26b) in vitro and in vivo. Human umbilical vein endothelial cells (HUVECs) and the Tg(fli-1a:EGFP)y1 zebrafish model were used to identify the anti-angiogenic activities of AGP-26, AGP-26a, and AGP-26b. The results showed that AGP-26b exhibits the strongest inhibitory effect on VEGF-induced proliferation, migration, invasion and formation of capillary-like structures in HUVECs...
January 18, 2017: Molecular BioSystems
https://www.readbyqxmd.com/read/28098219/combined-lrrk2-mutation-aging-and-chronic-low-dose-oral-rotenone-as-a-model-of-parkinson-s-disease
#20
Hui-Fang Liu, Philip Wing-Lok Ho, Gideon Chi-Ting Leung, Colin Siu-Chi Lam, Shirley Yin-Yu Pang, Lingfei Li, Michelle Hiu-Wai Kung, David Boyer Ramsden, Shu-Leong Ho
Aging, genetics and environmental toxicity are important etiological factors in Parkinson's disease (PD). However, its pathogenesis remains unclear. A major obstacle is the lack of an appropriate experimental model which incorporates genetic susceptibility, aging and prolonged environmental toxicity. Here, we explored the interplay amongst these factors using mutant LRRK2(R1441G) (leucine-rich-repeat-kinase-2) knockin mice. We found that mutant primary cortical and mesencephalic dopaminergic neurons were more susceptible to rotenone-induced ATP deficiency and cell death...
January 18, 2017: Scientific Reports
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