bluuebunny/crossref_metadata_2025_split huggingface dataset:
Domain‐specific impairment of source memory following a right posterior medial temporal lobe lesion
Authors: Peters Jan , Koch Benno , Schwarz Michael , Daum Irene 
Published: May 2007

AbstractThis single case analysis of memory performance in a patient with an ischemic lesion affecting posterior but not anterior right medial temporal lobe (MTL) indicates that source memory can be disrupted in a domain‐specific manner. The patient showed normal recognition memory for gray‐scale photos of objects (visual condition) and spoken words (auditory condition). While memory for visual source (texture/color of the background against which pictures appeared) was within the normal range, auditory source memory (male/female speaker voice) was at chance level, a performance pattern significantly different from the control group. This dissociation is consistent with recent fMRI evidence of anterior/posterior MTL dissociations depending upon the nature of source information (visual texture/color vs. auditory speaker voice). The findings are in good agreement with the view of dissociable memory processing by the perirhinal cortex (anterior MTL) and parahippocampal cortex (posterior MTL), depending upon the neocortical input that these regions receive. © 2007 Wiley‐Liss, Inc.
L‐type voltage‐operated Ca+2 channels modulate transient Ca+2 influx triggered by activation of Sertoli cell surface L‐selectin
Authors: Kao Tzu‐Jen , Millette Clarke F. 
Published: May 2007

AbstractNear the base of mammalian seminiferous epithelium, Sertoli cells are joined by tight junctions, which constitute the blood–testis barrier. Differentiating germ cells are completely enveloped by Sertoli cells and must traverse the tight junctions during spermatogenic cycle. Following the specific ligand activation of L‐selectin, the up‐regulated Rho family small G‐proteins have been implicated as important modulators of tight junctional dynamics. Although the activation of L‐selectin transmits subsequent intracellular signals in a Ca+2‐dependent fashion in various cell types, little is understood regarding the signaling pathways utilized by L‐selectin in Sertoli cells. Therefore, we have examined the possible resultant calcium influx triggered by specific ligand‐activation of cell surface L‐selectin receptors or by cross‐linking of L‐selectin with anti‐L‐selectin. Spectrofluorimetric studies demonstrate increase of intracellular Ca+2 levels immediately after the treatment of the L‐selectin ligands, fucoidan and sialyl Lewis‐a, or after treatment with anti‐L‐selectin antibody. We then determined the mechanism of Ca+2 influx by investigating L‐ and T‐type voltage‐operated Ca+2 channels, which have been suggested to present in the membranes of Sertoli cells. Data demonstrate that Sertoli cells treated with L‐type voltage‐operated Ca+2 channel antagonists, nifedipine, diltiazem, or verapamil, lead to dose‐dependent blockage of L‐selectin‐induced Ca+2 influx. Cells treated with mibedradil, a T‐type voltage‐operated Ca+2 channel antagonist, results in little or no blocking effect. Therefore, we conclude that activation of Sertoli cell L‐selectin induces Ca+2 influx, which is at least partially regulated by L‐type voltage‐operated Ca+2 channels. J. Cell. Biochem. 101: 1023–1037, 2007. © 2007 Wiley‐Liss, Inc.
Nuclear microenvironment in cancer diagnosis and treatment
Authors: Pezo Rossanna C. , Singer Robert H. 
Published: May 2007

AbstractThe nuclear architecture plays an important role in the temporal and spatial control of complex functional processes within the nucleus. Alterations in nuclear structures are characteristic of cancer cells and the mechanisms underlying these perturbations may directly contribute to tumor development and progression. In this review, we will highlight aspects of the nuclear microenvironment that are perturbed during tumorigenesis and discuss how a greater understanding of the role of nuclear structure in the control of gene expression can provide new options for cancer diagnosis and treatment. J. Cell. Biochem. 104: 1953–1963, 2008. © 2007 Wiley‐Liss, Inc.
Structural, electronic, and optical properties of phosphole‐containing π‐conjugated oligomers for light‐emitting diodes
Authors: Liu Yan‐Ling , Feng Ji‐Kang , Ren Ai‐Min 
Published: May 2007

AbstractThe purpose of this work is to provide an in‐depth interpretation of the optical and electronic properties of a series of phosphole derivatives, including 2,5‐diphenylthiooxophosphole (2a), 2‐phenyl‐5‐biphenylthiooxophosphole (3a), 2‐phenyl‐5‐stilbenylthiooxophosphole (4a), 2,5‐dithienylthiooxophosphole (2b), 2‐thienyl‐5‐biphenylthiooxophosphole (3b), 2‐thienyl‐5‐stilbenylthiooxophosphole (4b), and dibenzophosphole 1. These thiooxophospholes show great potential for application in OLEDs as efficient red emitters due to the tuning of the optical and electronic properties by the use of various substituents at the 2,5‐positions of the phosphole ring. The geometric and electronic structures of the oligomers in the ground state were investigated using density functional theory (DFT) and the ab initio HF, whereas the lowest singlet excited states were optimized with ab initio CIS. To assign the absorption and emission peaks observed in the experiment, we computed the energies of the lowest singlet excited states with time‐dependent DFT (TD‐DFT). All DFT calculations were performed using the B3LYP functional and the 6‐31G (d) basis set. The results show that the HOMOs, LUMOs, energy gaps, ionization potentials, and electron affinities for the phosphole derivatives are significantly affected by varying the phosphole ring substituents at the 2,5‐positions, which favor the hole and electron injection into OLEDs. The absorption and emission spectra exhibit red shifts to some extent [the absorption spectra: 339.63 (1) < 358.65 (2a) < 373.77 (3a) < 443.89 nm (4a) and 403.03 (3b) < 449.11 (2b) < 460.19 nm (4b); the emission spectra: 418.42 (1) < 513.62 (2a) < 556.51 (3a) < 642.59 nm (4a) and 568.31 (2b) < 631.11 (3b) < 647.35 nm (4b)] and the Stokes shifts are unexpectedly large ranging from 78 to 228 nm resulting from a more planar conformation of the excited state for the phosphole derivatives. © 2007 Wiley Periodicals, Inc. J Comput Chem, 2007
O2/3 exposure inhibits cell progression affecting cyclin B1/cdk1 activity in SK‐N‐SH while induces apoptosis in SK‐N‐DZ neuroblastoma cells
Authors: Cannizzaro A. , Falzacappa C. Verga , Martinelli M. , Misiti S. , Brunetti E. , Bucci B. 
Published: May 2007

AbstractIn search for innovative therapeutic agents for children neuroblastoma, the oxygen therapy could be considered an alternative anti‐tumoral treatment. Given the physiochemical properties of O2/3 gas mixture including fairly low aqueous solubility and spreading, and the interesting perspective of hyperoxia, we analyzed the inhibitory effect of O2/3 treatment on two human neuroblastoma cell lines (SK‐N‐SH and SK‐N‐DZ). In this study, we demonstrated that O2/3 treatment was able to induce cell growth inhibition and cell cycle perturbation in both cell lines. We observed an arrest at G2 phase, accompanied by an alteration in the expression and localization of cyclin B1/cdk1 complex and a reduction in its activity in SK‐N‐SH cells. This reduction was consistent with the increase in both Wee1 and chk1 protein levels. On the contrary, O2/3 induced apoptosis in SK‐N‐DZ cells via caspase 3 activation and Poly ADP‐ribose polymerase‐1 (PARP) cleavage, associated with an increase in the pro‐apoptotic Bax protein. Consequently, we considered the possibility of improving the responsiveness to chemotherapeutic agents such as Cisplatin, Etoposide, and Gemcitabine in combination with O2/3 treatment. The combined treatments produced a stronger cell inhibitory effect than Cisplatin and Etoposide used alone in SK‐N‐SH cells. On the contrary, the combination data were not significantly different from O2/3 treatment alone in SK‐N‐DZ cells, thus suggesting that the obtained changes in cell growth inhibition were due to the effect of O2/3 alone. J. Cell. Physiol. 213: 115–125, 2007. © 2007 Wiley‐Liss, Inc.
The tissue banking in cancer and stem cell research
Authors: Graziano Antonio , Biunno Ida , De Blasio Pasquale , Giordano Antonio 
Published: May 2007

AbstractThe Sapio Award was established in 1999 by the Sapio Group along with several Italian universities and research centers to recognize Italian scientists who have made a major contribution to the discovery or development of novel technologies in the fields of biotechnology, social and health services, nonotechnology and biosecurity in agricultural production and scientific distribution. The 2006 edition of the award meeting centered around the issues of tissue banks and biorepositories and translational medicine. The organizing committee divided this edition into a pre‐meeting held in Milan on October 18, 2006 and a master meeting on October 19, 2006, held at the ISS in Rome. A summary of these meetings is given. J. Cell. Physiol. 212: 345–347, 2007. © 2007 Wiley‐Liss, Inc.
On a Number‐Theoretic Result of Sylvester‐Kronecker‐Zsigmondy
Authors: Steidl G. , Tasche M. 
Published: May 2007

AbstractLet K be an algebraic extension field of Q. Further, let 𝔒K be the domain of algebraic integers of K, and let Σn(x) be the n‐th cyclotomic polynomial. This paper is devoted to the factorization of the principal ideal Σn(e) 𝔒K(e𝔒K) into prime ideals of 𝔒K. The main result (Theorem 3.4) can be considered as a generalization of a known result of Sylvester, Kronecker and Zsigmondy on the prime factorization of Σn(e) (eϵZ). With Theorem 3.4., we improve corresponding results of Redei [11] and Sachs [14]. We generalize a technique developed in [8] and [3] and we study also the cases that K is a quadratic field and a cyclotomic field, respectively. Finally, we apply the results to the parameter determination of Fourier‐like number‐theoretic transforms in 𝔒K.
A Priori Estimate for the Discontinuous Oblique Derivative Problem for Elliptic Systems
Authors: Begehr Heinrich , Wen Guo‐Chun 
Published: May 2007

AbstractRecently [6] an existence as well as a uniqueness theorem for the discontinuous oblique derivative problem for nonlinear elliptic system of first order in the plane, see [12, 19, 23] was proved, based on some a priori estimate from [20]. This estimate, however, is deduced by reductio ad absurdum. Therefore the constants in this estimate are unknown so that the estimate cannot be used for numerical procedures, e.g. for approximating the solution of a nonlinear problem by solutions of related linear problems, see [24, 3, 4]. In this paper a direct proof of an a priori estimate is given using some variations of results from [14], see also [11], where the constants can explicitely be estimated. For related a priori estimates see [1 – 5, 8, 16, 17, 20, 21, 24 – 26]. A basic reference for the oblique derivative problem is [9].
On Parabolic Trigonometry in a Degenerate Minkowski Plane
Authors: Ingarden R. S. , Tamássy L. 
Published: May 2007

AbstractA Minkowski plane is considered having a parabola as indicatrix curve and taking for its center the vertex of the parabola causing by this a degeneration of the Minkowski geometry. After a short discussion of the concept of the length and angle, the trigonometrical functions of this geometry has been calculated and their basic properties explained. A two‐parameter pseudogroup of generalized rotations has been found as an analogon of the Lorentz transformation group in special relativity. The theory has applications to thermodynamics.
ϵ‐Optimal and Optimal Controls for the Stochastic Linear‐Quadratic Problem
Authors: Tudor C. 
Published: May 2007

AbstractWe study the stochastic regulator problem in Hilbert spaces for systems governed by linear stochastic differential equations with retarded controls and with state and control dependent noise. We use integral Riccati equations and no reference to a Riccati differential equation or to the Ito formula is made.
Von Neumann Representations on Self‐Dual Hilbert W*‐Moduli
Authors: Frank Michael 
Published: May 2007

AbstractThis paper continues the investigations of [4]. Von Neumann algebras M of bounded operators on self‐dual Hilbert W*‐moduli ℋ possessing a cyclic‐separating element x in ℋ are considered. The close relation of them to such special real subspaces K of ℋ as treated in [4] is shown. Under the supposition that the underlying W*‐algebra is commutative, a Tomita‐Takesaki type theorem is stated for von Neumann algebras on self‐dual Hilbert W*‐moduli. The natural cone in ℋ arising from the pair (M, x) is investigated and its properties are obtained.
Strictly Convex Linear 2‐Normed Spaces
Authors: Ha Ki Sik , Cho Yeol Je , Kim Seong Sik , Khan M. S. 
Published: May 2007

AbstractIn this paper, we give several new characterizations of 2‐inner product spaces and strict convexity for linear 2‐normed spaces in terms of orthogonalites and 2‐semi‐inner product spaces.
The Packing Theorem and Packing Measure
Authors: Haase Hermann 
Published: May 2007

AbstractFor a VITALI class of a metric space (X, d) a packing measure is introduced following the ideas of [7]. The Packing Theorem of VITALI is a powerful mean to derive density results for measures [1, 2, 3]. Conversely, the notion of packing measure allows us to give sufficient conditions for a measure that the packing theorem of VITALI hods.
unconditional Bases in Banach Spaces of Absolutely p‐Summing Operators
Authors: Schütt I. 
Published: May 2007

AbstractIn the present paper we give conditions for Banach spaces of absolutely p‐summing operators to have unconditional bases. In this case we obtain methods to estimate the πp‐norm. Also we consider spaces of absolutely p‐summing operators with “bad” structure, i.e., without local unconditional structure.
On the Strong Approximation by (C, α)‐Means of Fourier Series
Authors: Łenski Włodzimierz 
Published: May 2007

AbstractThe degree of pointwise approximation in the strong sense of 2π‐periodic functions from Lp (p = (1 + α)−1, α > −1/2) is examined. An answer to the modified version of Leindler's problem [4] is given.
On Linear Dependence Relations for Integer Translates of Compactly Supported Distributions
Authors: Dahmen Wolfgang , Jia Rong Qing , Micchelli Charles A. 
Published: May 2007

AbstractA necessary and sufficient condition for the dimension of the space of dependence relations for (multi‐) integer translates of an arbitrary compactly supported distribution in terms of zeros of its Fourier transform is given. We apply this result to obtain necessary and sufficient conditions on an integer matrix X so that the space of dependence relations for the corresponding cube spline C(·|X) is finite dimensional. We are able to describe the explicit form of all dependence relations.
Remarks on M‐Ideals of Compact Operators on X ⊕p X
Authors: Oja Eve , Werner Dirk 
Published: May 2007

AbstractWe characterize those Banach spaces X for which K(X ⊕p X) is an M‐ideal in L(X ⊕p X) by means of a variant of the compact metric approximation property. As a consequence we obtain that such a space X must be hereditarily lp‐rich.
On the Inverse Source Problem for the Newtonian Potential
Authors: Luc Le Trong 
Published: May 2007

AbstractThe paper deals with the inverse source problems for the Newtonian potential in the sense of distribution (generalized functions). The inverse source problem is defined as follows: A domain G is given. To find is a distribution creating the potential which is known outside of the closed domain G. New results can be applied to electronical fields, because the electrical charge is distributed only on the surface of conductor.
On the JACOBIan Varieties of PICARD Curves Defined over Fields of Characteristic p < 0
Authors: Estrada‐Sarlabous J. 
Published: May 2007

AbstractIn this paper we confine ourselves to the study of the Jacobian variety J(C) of a Picard curve C defined over a field K of characteristic p > 0, with the aim to obtain explicit conditions under which the Jacobian variety is ordinary or supersingular, in terms of the Hasse‐Witt matrix of the Picard curve.
Remarks on Complex Interpolation of Some Nonlinear Operators (I)
Authors: Böhm Michael 
Published: May 2007

AbstractLet Aj, Bj be complex B‐spaces, j = 0, 1, Aθ and Bθ–the complex‐interpolation spaces generated by the couples (A0, A1) and (B0, B1), resp., by CALDERON'S/LIONS'S method. Let T: A0 ∧ A1 → B0 → B1 be an operator satisfying some conditions such as continuity, estimates etc. in terms of the norms of Aj, Bj (j = 0, 1). We consider the question which one of these properties is inherited to T when A0 → A1 and B0 → B1 are equipped with the norm of Aθ and Bθ.
Criteria of Nuclearity of Embedding Operators Acting between BERGMAN Spaces and Weighted LEBESQUE Spaces
Authors: Parfenov O. G. 
Published: May 2007

AbstractIn the paper the criteria of nuclearity of embedding operators acting from BERGMAN space into the space Lq(μ) are established. Some questions related to Pr – summability of these operators are considered. The criteria of nuclearity of embedding operator from Hp into Lq(μ) for some class of measures and p ≧ q are given.
Approximation mittels Linearkombinationen von Fundamentallösungen elliptischer Differentialoperatoren
Authors: Hamann Uwe 
Published: May 2007

AbstractLet Ω ⊂ Rn be a bounded domain with the smooth boundary Γ, L an elliptic differential operator of order 2m with constant coefficients, E a fundamental solution of L and B = (B1, …, Bm) a normal system of boundary operators on Γ. Furtehr let (yk)Γ1 ⊂ Rn/Ω be a sequence of points and Dj(Γ) (j = 1, …, m) suitable function spaces over Γ (e.g. Cs‐spaces or SOBOLEV spaces).It is investigated, under which conditions on the sequence (yk)x1 ⊂ Rn/Ω the set
The lymphatics in the pathophysiology of thoracic and abdominal surgical pathology: Immunological consequences and the unexpected role of microsurgery
Authors: Boccardo Francesco , Bellini Carlo , Eretta Costantino , Pertile Davide , Da Rin Elisa , Benatti Emanuela , Campisi Mirko , Talamo Giuseppina , Macciò Alberto , Campisi Corrado , Bonioli Eugenio , Campisi Corradino 
Published: May 2007

AbstractThe authors report their experience in the diagnosis and treatment of lymphatic and chylous disorders in the thoracic and abdominal areas. Sixteen patients (10 adults, 6 children) affected by primary chylous ascites with associated syndromes and consequent immunological incompetence were studied. Diagnostic investigations included abdominal sonography scans, lymphoscintigraphy, and lymphography combined with computed tomography and laparoscopy. Surgical treatment included laparoscopy, drainage of ascites and/or the chylothorax, treatment of abdominal and retroperitoneal chylous leaks, exeresis of lymphodysplastic tissues, ligation of incompetent lymph vessels also by CO2 LASER, and chylo‐venous and lympho‐venous microsurgical shunts. Eleven patients did not have a relapse of the ascites and four patients had a persistence of a small quantity of ascites with no protein imbalance. All patients had an improvement of their immunocompetence. Median follow‐up was 5 years. We demonstrated that the use of microsurgery is remarkably advantageous for performing a causal treatment of the dysfunction. © 2007 Wiley‐Liss, Inc. Microsurgery 2007.
Effects of hyperbaric oxygen therapy on the rat intestinal mucosa apoptosis caused by ischemia‐reperfusion injury
Authors: Bertoletto Paulo Roberto , Fagundes Djalma José , De Jesus Simões Manuel , Oshima Celina T.F. , De Souza Montero Edna Frasson , Simões Ricardo Santos , Fagundes Anna Tereza Negrini 
Published: May 2007

AbstractTo examine the apoptosis expression in the intestinal mucosa in accordance of different periods of hyperbaric oxygen (HBO) treatment, rats were submitted to 60 min of mesenteric artery and vein ischemia and 60 min of reperfusion occlusion. A group (G‐IR) was the control and HBO was applied in the ischemia (GHBO‐I), reperfusion (GHBO‐R), and ischemia and reperfusion time (GHBO‐IR). After 60 min of reperfusion, samples of small bowel were prepared for immunohistochemical expression of caspase‐3. The expression of caspase‐3 was significantly inferior when HBO was administered in the ischemia (0.16 ± 0.01) in comparison with the control (0.70 ± 0.08), but HBO in the further reperfusion (0.84 ± 0.03) or both ischemia and reperfusion time (0.42 ± 0.05) was significantly worse. There was a connection between HBO, small bowel I/R injury, and mucosa apoptosis. The favorable effect was obtained when HBO was administered early in the ischemia time. © 2007 Wiley‐Liss, Inc. Microsurgery 2007.
Effect of Baohuoside‐1 aglycone and tacrolimus monotherapy and combination therapy on prevention of acute heart allograft rejection in the rat
Authors: Qi Shijie , Zhao Hong , Ma Anlun , Liu Longshan , Wang Xiang , Xu Dasheng , Lin Geng , Tamura Kouichi , Jiang Hongsi , Daloze Pierre , Chen Huifang 
Published: May 2007

AbstractBaohuoside‐1 (B‐1), a recently introduced novel immunosuppressant that was proved to be potent in inhibition of T and B cell proliferation and B‐1, also prevents cardiac allograft rejection in rodents. The present study further proved that monotherapy of B‐1's analogue B‐1 aglycone effectively prolongs cardiac allograft survival and combination therapy of B‐1 aglycone with tacrolimus (FK506) produces synergistic effect in prevention acute cardiac allograft rejection in the rat. © 2007 Wiley‐Liss, Inc. Microsurgery 2007.
Cuff‐glue sutureless microanastomosis
Authors: Galvão Flávio Henrique Ferreira , Bacchella Telesforo , Machado Marcel Cerqueira 
Published: May 2007

AbstractHand suture microanastomosis is a difficult procedure. This report describes a simplified microanastomosis using cuff and glue apparatus. Model: Vena cava and intestine of rat were sectioned. The distal margin was introduced into an everted cuff covering the outer wall and fixed to the base of the tube by three stitches. The proximal segment was inserted into the cuff system and an encircling ligature was performed to attach both margins to the cuff. Proximal margin below ligature was pulled up exposing both intimae where glue was deposited. The proximal margin was pulled down, sealing the borders by glue adhesion. Ligatures fixing the system were sectioned and the cuff was removed. Anastomosis acquired a waveform shape, obtaining ideal intima–intima union and improving the healing process. After short training, this anastomosis can be performed within 10 min. This technique avoids cuff foreign body reaction, simplifies microanastomosis research, and may improve glue technology for tissue anastomosis. © 2007 Wiley‐Liss, Inc. Microsurgery 2007.
Teaching intestinal transplantation in the rat for medical student
Authors: Ferreira Galvão Flávio Henrique , Bacchella Telesforo , Cerqueira Machado Marcel 
Published: May 2007

AbstractTechnical difficulties hamper the widespread use of intestinal transplantation in rats. We evaluated the feasibility in training this microsurgical model for medical students. Thirty eight students were assessed. After information about intestinal transplantation in rats, they spontaneously agreed to be trained for this procedure. The course consisted of 4‐h weekly lessons during 4‐month period. The teaching process includes assessment in four phases: I) conception of intestinal transplantation and rat anatomy; II) basic microsurgery training; III) donor operation; IV) donor/recipient operation. Wistar rats were used as donors and recipients in one‐step small bowel transplantation. All students (100%) reached phase II, seven students (18.42%) reached phase III and two students (5.26%) reached phase IV. Decreased interest about the theme, lack of time and patience, frustration and/or inability were all reasons given by the student that may have contributed to the low rate of success. Medical students achieved a low rate of completion for training in rat intestinal transplantation microsurgical procedures. © 2007 Wiley‐Liss, Inc. Microsurgery 2007.