bluuebunny/crossref_metadata_2025_split huggingface dataset:
Meta-analysis of randomized controlled trials on the safety and effectiveness of day-case laparoscopic cholecystectomy
Authors: Gurusamy K , Junnarkar S , Farouk M , Davidson B R 
Published: January 2008

Abstract

Background
Although day-case laparoscopic cholecystectomy can save bed costs, its safety has to be established. The aim of this meta-analysis is to assess the advantages and disadvantages of day-case surgery compared with overnight stay in patients undergoing elective laparoscopic cholecystectomy.

Methods
Randomized clinical trials addressing the above issue were identified from The Cochrane Library trials register, Medline, Embase, Science Citation Index Expanded and reference lists. Data were extracted from these trials by two independent reviewers. For each outcome the relative risk, weighted mean difference or standardized mean difference was calculated with 95 per cent confidence intervals based on available case analysis.

Results
Five trials with 215 patients randomized to the day-case group and 214 to the overnight-stay group were included in the review. Four of the five trials were of low risk of bias. The trials recruited 49·1 per cent of patients presenting for cholecystectomy. There was no significant difference between day case and overnight stay with respect to morbidity, prolongation of hospital stay, readmission rates, pain, quality of life, patient satisfaction, and return to normal activity and work. In the day-case group 80·5 per cent of patients were discharged on the day of surgery.

Conclusion
Day-case laparoscopic cholecystectomy is a safe and effective treatment for symptomatic gallstones.
Exploring the scope of redox‐triggered chiroptical switches: Syntheses, X‐ray structures, and circular dichroism of cobalt and nickel complexes of N,N‐Bis(arylmethyl)methionine derivatives
Authors: Das Debasis , Dai Zhaohua , Holmes Andrea , Canary James W. 
Published: January 2008

AbstractN,N‐Bis(arylmethyl)methionine derivatives are chiral ligands whose complexes with metal ions may show molecular helicity that can be modulated by defined structural processes. It was shown previously that exciton‐coupled circular dichroism (ECCD) spectral amplitude could be modulated by one‐electron copper redox chemistry in copper complexes of these ligands. Here we describe the further development of novel systems that show conformational changes resulting in the inversion of exciton chirality. The phenomenon was probed in a N,N‐bis(arylmethyl)methionine derivative containing quinoline/pyridine moieties and a methionine carboxylate moiety. The sign of the ECCD of the complex formed between this ligand and CoCl2 is negative, which suggests that the deprotonated carboxylate oxygen coordinates to the metal, but the sulfur atom does not. The sign of the ECCD inverts to positive upon addition of ascorbic acid, which can be turned back to negative upon further treatment with persulfate. X‐ray quality crystals of three cobalt complexes and one nickel complex were obtained. The ascorbate‐treated cobalt complex of the ligand and the same ligand with nickel, however, vary from the behavior expected from their X‐ray crystal structures. It is clear that the solution and crystallographic structures of these complexes differ in several cases. Chirality, 2008. © 2008 Wiley‐Liss, Inc.
Analysis of the midbrain–hindbrain boundary cell fate using a boundary cell‐specific Cre‐mouse strain
Authors: Kala Kaia , Jukkola Tomi , Pata Illar , Partanen Juha 
Published: January 2008

AbstractWe describe here a transgenic mouse line MHB‐Cre, which expresses Cre recombinase in a group of cells at the midbrain–hindbrain boundary. Using this mouse line, we studied the contribution of the boundary cells to distinct brain areas during development. Initially, the MHB‐Cre expression coincides with that of Cdh22 and p21 around the Otx2 expression border in a narrow population of cells with reduced proliferative activity. Consistent with their location on both sides of the Otx2 expression border, the Cre expressing boundary cells contribute both to midbrain as well as hindbrain. However, the majority of recombinant cells remain close to the mid‐ and hindbrain border, suggesting very limited cell mixing within these brain compartments during development. Interestingly, dorsocaudally oriented fibers of the midbrain dopaminergic neurons follow the path marked by the boundary cells. genesis 46:29–36, 2008. © 2008 Wiley‐Liss, Inc.
IGFBP5 is a potential regulator of craniofacial skeletogenesis
Authors: Bobola Nicoletta , Engist Bettina 
Published: January 2008

AbstractSix known proteins bind to the insulin‐like growth factor (IGF) with high affinity. Igfbp5 encodes one of these proteins, which regulates the activity of IGF, but also exerts IGF‐independent actions. Using in situ hybridization to detect cells expressing Igfbp5 mRNA, we show that Igfbp5 is expressed in a dynamic pattern in the mouse embryonic craniofacial region. At early stages corresponding to the completion of neural crest migration, Igfbp5 mRNA was found predominantly in the epithelia, whereas when the craniofacial mesenchyme has begun its differentiation into skeletal tissue, Igfbp5‐expressing cells surrounded the developing cartilages and bones. Embryos transgenically expressing Igfbp5 in restricted areas of the mesenchyme fated to form craniofacial bones revealed decreased ossification and even deletion of head bones areas. Transgenic expression of a mutant Igfbp5, encoding a product with reduced binding affinity for IGF, led to no skeletal abnormalities, suggesting that the observed negative effects on skeletal development rely on a mechanism that depends on binding to IGF. genesis 46:52–59, 2008. © 2008 Wiley‐Liss, Inc.
SLIC‐1/sorting nexin 20: A novel sorting nexin that directs subcellular distribution of PSGL‐1
Authors: Schaff Ulrich Y. , Shih Heather H. , Lorenz Meike , Sako Dianne , Kriz Ron , Milarski Kim , Bates Brian , Tchernychev Boris , Shaw Gray D. , Simon Scott I. 
Published: January 2008

AbstractP‐Selectin glycoprotein ligand‐1 (PSGL‐1) is a mucin‐like glycoprotein expressed on the surface of leukocytes that serves as the major ligand for the selectin family of adhesion molecules and functions in leukocyte tethering and rolling on activated endothelium and platelets. Previous studies have implicated the highly conserved cytoplasmic domain of PSGL‐1 in regulating outside‐in signaling of integrin activation. However, molecules that physically and functionally interact with this domain are not completely defined. Using a yeast two‐hybrid screen with the cytoplasmic domain of PSGL‐1 as bait, a novel protein designated selectin ligand interactor cytoplasmic‐1 (SLIC‐1) was isolated. Computer‐based homology search revealed that SLIC‐1 was the human orthologue for the previously identified mouse sorting nexin 20. Direct interaction between SLIC‐1 and PSGL‐1 was specific as indicated by co‐immunoprecipitation and motif mapping. Colocalization experiments demonstrated that SLIC‐1 contains a Phox homology domain that binds phosphoinositides and targets the PSGL‐1/SLIC‐1 complex to endosomes. Deficiency in the murine homologue of SLIC‐1 did not modulate PSGL‐1‐dependent signaling nor alter neutrophil adhesion through PSGL‐1. We conclude that SLIC‐1 serves as a sorting molecule that cycles PSGL‐1 into endosomes with no impact on leukocyte recruitment.
Minimal and maximal goal orientation and reactions to norm violations
Authors: Fritsche Immo , Kessler Thomas , Mummendey Amélie , Neumann Jörg 
Published: January 2008

AbstractViolations of social norms can either be evaluated in an absolute or in a gradual fashion depending on whether group goals are represented as minimal or maximal goals. Recent research has shown that absolute versus gradual deviations lead to increased levels of demanded punishment and inclination to exclude the deviant from the respective moral community. In this article, we investigate whether individual differences in orientation towards setting goals in either minimal or maximal terms predict reactions to norm violation. In three studies we found that a dominant minimal goal orientation (MIN) relative to maximal goal orientation (MAX) increased punishment inclinations and social exclusion tendencies towards norm violators. These effects were mediated by affective reaction and proved to be unique goal orientation effects when possible effects of need for closure, intolerance of ambiguity and regulatory focus were controlled for. Copyright © 2008 John Wiley & Sons, Ltd.
If we have the will, there will be a way: regulatory focus as a group identity
Authors: Faddegon Krispijn , Scheepers Daan , Ellemers Naomi 
Published: January 2008

AbstractBased on social identity theory and regulatory focus theory, we predicted that promotion and prevention strategies can be part of the identity of a group (i.e., collective regulatory focus) which in turn influences the behavior and experienced emotions of individual group members. We conducted two experiments to test this prediction. After assessing participants' personal regulatory focus preference, collective regulatory focus was induced by showing participants group mottos, allegedly chosen by other members of their group, that either voiced a promotion or a prevention strategy preference. Both experiments yielded evidence for our prediction in that the collective regulatory focus shifted the behavior of individual group members on a signal detection task towards promotion‐ (liberal bias) or prevention‐ (conservative bias) consistent behavior and influenced the emotions they experienced. Experiment 2 further substantiated our group identity rationale by showing that these effects were especially strong for high identifiers. Copyright © 2007 John Wiley & Sons, Ltd.
Nonconscious goal pursuit and the surmounting of physical and social obstacles
Authors: Custers Ruud , Maas Marjolein , Wildenbeest Miranda , Aarts Henk 
Published: January 2008

AbstractThe ability to overcome obstacles is widely regarded as a sign of motivation. Building on recent research on nonconscious goal pursuit, two experiments are presented that test whether activating the goal of helping outside people's awareness by exposure to social stereotypes causes them to overcome physical and social obstacles. Experiment 1 established that although overall participants were less inclined to pick up a tissue that was accidentally dropped on the floor by the experimenter when this tissue was dirty instead of clean, they were able to overcome their aversion toward picking up the physical object when they were primed with the mental representation of a social group (e.g., nurse) containing the goal of helping. Results were replicated in Experiment 2, in which participants had to overcome a social obstacle by providing feedback to a student of a negatively evaluated ethnic minority group, and explanations in terms of demand characteristics and mood were excluded. Implications for the literature on nonconscious goal pursuit are briefly discussed. Copyright © 2007 John Wiley & Sons, Ltd.
Conformity: moods matter
Authors: Tong Eddie M. W. , Tan Cindy R. M. , Latheef Nareeman A. , Selamat Mohammad F. B. , Tan Dennis K. B. 
Published: January 2008

AbstractThis study examined the hypotheses that positive mood enhances conformity and that negative mood reduces it. Participants were induced to feel positive, neutral, or negative moods and then answered, in private, six mathematical questions. They observed that wrong answers were unanimously given by five bogus participants for three of the questions. Conformity was measured by whether they indicated the erroneous answers given by these bogus participants in these three questions. The results were supportive of the hypothesis. The current results are consistent with past findings about mood differences in heuristic versus elaborative processing. Copyright © 2007 John Wiley & Sons, Ltd.
Minority influence: the role of ambivalence toward the source
Authors: Mucchi‐Faina Angelica , Pagliaro Stefano 
Published: January 2008

AbstractAccording to literature on social influence, a minority source may indirectly influence group members by fostering ambivalent reactions. Two studies were carried out in order to provide empirical support for this theoretical assumption. In Study 1 participants (n = 133), were exposed to a counter‐attitudinal minority message and ambivalence was manipulated by facilitating the accessibility of either ambivalent (positive and negative) or univalent (positive or negative) thoughts toward the source. We predicted and found more indirect influence in ambivalent condition than in univalent conditions. No effect of ambivalence on direct influence was found. In Study 2 (n = 127), ambivalence was measured and two possible antecedents of ambivalence, consistency of the minority and personal relevance of the topic for participants, were taken into account. Findings suggest that ambivalence mediates the effects of the two factors on indirect influence. In sum, these studies provide evidence of the importance of ambivalence in minority influence context, an early assumption that was still lacking in strong empirical support. Copyright © 2007 John Wiley & Sons, Ltd.
Reliability and validity of the Single‐Target IAT (ST‐IAT): assessing automatic affect towards multiple attitude objects
Authors: Bluemke Matthias , Friese Malte 
Published: January 2008

AbstractIn contrast to the original Implicit Association Test (IAT), the Single‐Target Implicit Association Test (ST‐IAT) measures the evaluation of a target object without the need to simultaneously evaluate a counter‐category. The present research investigates (a) whether position within a series of several ST‐IATs affects reliability and validity, and (b) whether the ST‐IAT exhibits adequate construct validity if the target objects are closely interrelated. We address these questions by taking five interrelated yet distinct political parties in Germany as an exemplary domain. The ST‐IAT reliably and validly assessed attitudes towards political parties (Study 1). Serial position effects did not affect the results. The ST‐IATs mostly captured a specific party evaluation and exhibited discriminant validity. At the same time, discriminant validity was limited among parties within one wing of the political left–right spectrum that underlies implicit and explicit party evaluations (Study 2). If used with caution, the ST‐IAT can be a valuable supplement to implicit measures in the case of multiple single‐target assessments. Copyright © 2007 John Wiley & Sons, Ltd.
Psychological group memberships as outcomes of resource distributions
Authors: Platow Michael J. , Grace Diana M. , Wilson Nicole , Burton Derek , Wilson Andrew 
Published: January 2008

AbstractWe propose that people can and will infer group memberships from resource distributions, and that these distributions have implications for people's understandings of the groups themselves and their own associations with these groups. We derive hypotheses from social identity and self‐categorization theories, and test them in three experiments. In Experiment 1, participants systematically rated specific patterns of group memberships as more likely than others in light of specific resource distributions in a manner consistent with our predictions. In Experiment 2, intragroup distributive fairness led to greater perceived self‐in‐group similarity than intra‐group distributive unfairness, while distributively unfair, in‐group favouritism led to greater perceived self‐in‐group similarity than intergroup fairness. In Experiment 3, social identification dropped following unfair, out‐group favouritism and intragroup unfairness, but not unfair, in‐group favouritism, or intragroup and intergroup fairness. The current data provide support for our hypotheses and clear evidence that resource distributions can be providers of group membership information. Copyright © 2007 John Wiley & Sons, Ltd.
Solo status and women's spatial test performance: the role of individuation tendencies
Authors: Keller Johannes , Sekaquaptewa Denise 
Published: January 2008

AbstractThe impact of anticipated solo status on women's spatial performance was investigated in an experimental study. The study was designed to test whether the underperformance of women entering testing situations who find themselves to be the only woman present is related to a tendency to individuate the self. Women performed a test of spatial ability under conditions of anticipated solo or non‐solo status and responded to a measure of self‐construal. In line with previous research, we found a disrupting solo status effect on women's performance on the spatial ability test. Most importantly, the negative effect of solo status on performance was partially mediated by individuation tendencies as reflected in a decreased predominance of the interdependent (as compared to the independent) level of the self under solo status conditions. These findings indicate that individuation tendencies play a crucial role in the process triggered in test takers under threatening performance situations. Copyright © 2007 John Wiley & Sons, Ltd.
Retracted:Staff, miter, book, share: how attributes of Saint Nicholas induce normative behavior
Authors: Joly Janneke F. , Stapel Diederik A. 
Published: January 2008

AbstractIn three studies the hypothesis was tested that for young Dutch children, who associate Saint Nicholas with the norm to share one's wealth with others, attributes of Saint Nicholas (miter, book, and staff) would spontaneously activate the “sharing norm” and subsequent sharing behavior. The results confirmed our expectations. In two studies, young Dutch children share more candy with others after being primed with attributes of Saint Nicholas compared to being primed with a dwarf in the control condition. In a third study, children evaluate sharing more positively after being primed with attributes of Saint Nicholas, and more negatively after being primed with the Toys R Us logo, compared to being primed with a dwarf. This is the first empirical evidence that attributes of normative symbols can induce normative behavior and change norm judgments. Copyright © 2008 John Wiley & Sons, Ltd.
Sprinklered office fire tests
Authors: Bennetts I. D. , Moinuddin K. A. M. , Thomas I. R. , Proe D. J. 
Published: January 2008

AbstractThis paper presents data relating to the performance of sprinklers and detectors in real office fire situations. For sprinklers, these data are additional to that associated with the standardized testing used to determine the design delivery density and pressure requirements for various occupancy situations, and provide a useful insight into the effect of sprinklers on developing fires with various office situations. The data given in this paper include the times for activation of various types of sprinkler heads (normal and fast response), the efficacy of the systems as far as extinguishment is concerned, estimates of the maximum size of the fires prior to commencement of extinguishment and associated air temperatures at various locations within the office enclosures. Copyright © 2008 John Wiley & Sons, Ltd.
Remarks on the links between low‐order DG methods and some finite‐difference schemes for the Stokes problem
Authors: Minev P. D. 
Published: January 2008

AbstractIn this paper we demonstrate that some well‐known finite‐difference schemes can be interpreted within the framework of the local discontinuous Galerkin (LDG) methods using the low‐order piecewise solenoidal discrete spaces introduced in (SIAM J. Numer. Anal. 1990; 27(6): 1466–1485). In particular, it appears that it is possible to derive the well‐known MAC scheme using a first‐order Nédélec approximation on rectangular cells. It has been recently interpreted within the framework of the Raviart–Thomas approximation by Kanschat (Int. J. Numer. Meth. Fluids 2007; published online). The two approximations are algebraically equivalent to the MAC scheme, however, they have to be applied on grids that are staggered on a distance h/2 in each direction. This paper also demonstrates that both discretizations allow for the construction of a divergence‐free basis, which yields a linear system with a ‘biharmonic’ conditioning. Both this paper and Kanschat (Int. J. Numer. Meth. Fluids 2007; published online) demonstrate that the LDG framework can be used to generalize some popular finite‐difference schemes to grids that are not parallel to the coordinate axes or that are unstructured. Copyright © 2008 John Wiley & Sons, Ltd.
Amplification and overexpression of PPFIA1, a putative 11q13 invasion suppressor gene, in head and neck squamous cell carcinoma
Authors: Tan Kaia Davis , Zhu Yansong , Tan Hiang Khoon , Rajasegaran Vikneswari , Aggarwal Amit , Wu Jeanie , Wu Hui Yong , Hwang Jacqueline , Lim Dennis T. H. , Soo Khee Chee , Tan Patrick 
Published: January 2008

AbstractChromosomal amplifications of the 11q13 genomic region are frequent in head and neck squamous cell carcinoma (HNSCC). To identify novel 11q13 amplification targets, we integrated high‐resolution array‐based comparative genomic hybridization and Affymetrix gene‐expression profiling of eight HNSCC cell lines. We found that PPFIA1 was the highest upregulated gene in the 11q13 amplicon of HNSCC cell lines when compared with HNSCC lines without 11q13 amplification and confirmed the upregulation of PPFIA1 in primary HNSCCs by real‐time PCR. Using siRNA knockdown, we investigated PPFIA1 function in three HNSCC lines using both in vitro invasion assays and wound‐healing assays. Surprisingly, we found that cancer cells become more invasive when the PPFIA1 protein levels were reduced, suggesting that PPFIA1 may act as an invasion inhibitor in HNSCC. This unexpected result suggests that the 11q13 amplicon may comprise both positive and negative regulators involved in HNSCC. Our study is the first to evaluate the role of PPFIA1 in head and neck carcinogenesis and suggests a potential link between PPFIA1 activity and cell‐extracellular matrix interactions. This article contains supplementary material available via the Internet at http://www.interscience.wiley.com/jpages/1045‐2257/suppmat. © 2008 Wiley‐Liss, Inc.
Second primary neoplasms in survivors of Wilms' tumour—A population‐based cohort study from the British Childhood Cancer Survivor Study
Authors: Taylor Aliki J. , Winter David L. , Pritchard‐Jones Kathy , Stiller Charles A. , Frobisher Clare , Lancashire Emma R. , Reulen Raoul C. , Hawkins Mike M. ,   on behalf of the British Childhood Cancer Survivor Study
Published: January 2008

AbstractA British population‐based cohort study was carried out to determine the risk of second primary neoplasms in survivors of Wilms' tumour. The cohort was obtained from the British Childhood Cancer Survivor Study, a population‐based cohort study of treatment toxicities in 18,044 individuals diagnosed with childhood cancer, at an age of less than 15 years, between 1940 and 1991 in Britain. There were 1,441 Wilms' tumour survivors in the cohort: 732 males (50.8%) and 709 females (49.2%). Total follow‐up from 5‐year survival was 27,841 person years, mean follow‐up of 19.3 years per survivor. There were 81 second primary neoplasms, including 52 solid neoplasms, 3 acute myeloid leukaemias and 26 basal cell carcinomas. Thirty‐five of the 39 solid neoplasms that developed in the thoracic, abdominal or pelvic region occurred within irradiated tissue. The standardised incidence ratio for all solid second primary neoplasms was 6.7 (95% CI: 5.0–8.8). Cumulative incidence for all solid second primary neoplasms by ages 30, 40 and 50 years was 2.3% (1.4–3.5%), 6.8% (4.6–9.5%) and 12.2% (7.3–18.4%). The overall risk of second primary neoplasms in survivors of Wilms' tumour treated between 1940 and 1991 was substantial, and solid second tumours tended to develop in the irradiated tissue. Continued follow‐up of these survivors is important to monitor such late effects of treatment. It is also important to evaluate the risk of second primary neoplasms following more recent lower radiation dose treatment practices. © 2008 Wiley‐Liss, Inc.