bluuebunny/crossref_metadata_2025_split huggingface dataset:
Synthesis and Magnetic Property of Copper(II)–Lanthanide(III) Complexes [{CuIILLnIII(o-van)(CH3COO)(MeOH)}2]·2H2O (LnIII = GdIII, TbIII, and DyIII; H3L = 1-(2-Hydroxybenzamido)-2-(2-hydroxy-3-methoxybenzylideneamino)ethane; o-van = 3-Methoxysalicylaldehydato)
Authors: Hamamatsu Takefumi , Yabe Kazuya , Towatari Masaaki , Matsumoto Naohide , Re Nazzareno , Pochaba Andrzej , Mrozinski Jerzy 
Published: March 2007

Abstract
Three tetranuclear copper(II)–lanthanide(III) complexes, [{CuIILLnIII(o-van)(CH3COO)(MeOH)}2]·2H2O (LnIII = GdIII, TbIII, and DyIII), were synthesized and characterized, where H3L is 1-(2-hydroxybenzamido)-2-(2-hydroxy-3-methoxybenzylideneamino)ethane and o-van is 3-methoxysalicylaldehydato. These compounds are isomorphous to each other and consist of a cyclic tetranuclear CuII2LnIII2 structure, in which the CuII and LnIII ions are alternately arrayed and the CuII component complex. [CuIIL]− unit functions as a “bridging ligand-complex” between two adjacent LnIII ions through the phenolato and methoxy oxygen atoms at one side and the amido oxygen atom at the another side. The temperature-dependent magnetic susceptibilities from 2.0 to 300.0 K and the field-dependent magnetizations at 2.0 K from 0 to 5 T showed that the magnetic interaction between CuII and each of the lanthanide ions is ferromagnetic. The magnetic susceptibilities of [{CuIILGdIII(o-van)(CH3COO)(MeOH)}2]·2H2O were analyzed by using a spin-only Hamiltonian H = −2J1(SCu1SGd1 + SCu2SGd2) − 2J2(SCu1SGd2 + SCu2SGd1) based on a cyclic tetranuclear structure and gave the best-fit parameters of g = 1.97, J1 = +3.8 cm−1, J2 = +0.7 cm−1, and zJ′ = −0.01 cm−1. The magnetization data at 2.0 K of [{CuIILGdIII(o-van)(CH3COO)(MeOH)}2]·2H2O were well reproduced by using a Brillouin function with an S = 8 spin ground state due to the ferromagnetic interactions between CuII and GdIII ions and g = 1.97. The ac magnetic susceptibilities of [{CuIILLnIII(o-van)(CH3COO)(MeOH)}2]·2H2O (LnIII = TbIII and DyIII) in the temperature range 1.8–10.0 K with a 3 G ac field oscillating in the range 1–1000 Hz showed a frequency dependence characteristic of SMMs.
Structure–Activity Relationship of Insulinomimetic Activity of Zinc(II) Complexes with Pyridine-2-sulfonic Acid Derivatives
Authors: Yoshikawa Yutaka , Morishita Mika , Nishide Midori , Yoshikawa Eriko U , Kinoshita Isamu , Okada Keiji , Kajiwara Naemi M , Sakurai Hiromu , Kojima Yoshitane 
Published: March 2007

Abstract
We prepared zinc(II) complexes with a series of mono-methyl-substituted pyridine-2-sulfonic acid derivatives to clarify the relationship between the structure and insulinomimetic activity. Towards in vitro insulinomimetic activity, bis(3-methylpyridine-2-sulfonato)zinc(II) gave the best result among the zinc(II) complexes with methylpyridine-2-sulfonates.
Characterization of Magnesium Porphyrins and Aggregation of Porphyrins in Organic Solvent
Authors: Zhang Xiaoyong , Sasaki Ken , Kuroda Yasuhisa 
Published: March 2007

Abstract
Magnesium tetrakis(4-sulfonatophenyl)porphyrin complex was synthesized and purified. MgTPPS (tetrasodium salt) and MgTPPSC8 (tetraoctylammonium salt) showed unique spectroscopic behaviors in an aqueous buffer and CH3OH respectively, indicating solvent ligation on the Mg ion. In pure CH2Cl2, the MgTPPSC8 formed unique J-type oligomers, in which the sulfonato groups mutually coordinate to the vicinal Mg ion. In binary solvent systems of CH2Cl2 and CH3OH, MgTPPSC8 formed H-aggregates as well as other TPPS derivatives, and aggregation was controlled by changing the ratio of the solvents. The geometrical structure of J-type oligomers was estimated by using the exciton point-dipole coupling theory.
Dehydroabietic Acid Esters as Chiral Dopants for Nematic Liquid Crystals
Authors: Shitara Hiroaki , Aruga Marie , Odagiri Emi , Taniguchi Kayoko , Yasutake Mikio , Hirose Takuji 
Published: March 2007

Abstract
Dehydroabietic acid esters were prepared as new chiral dopants for the nematic liquid crystals. The magnitude of the helical twisting power (HTP) was good due to simple but rigid three-ring structure and two axial methyl groups. The relationship between the HTP or MHTP (molar helical twisting power) values and the terminal structures was studied. Considering the synthetic accessibility and their miscibility with liquid crystals, the acid was shown to be a good candidate as the scaffold of chiral dopants for the nematic liquid crystals.
Uniform Submicro Spherical Morphology of Ionic Palladium(II) Complexes
Authors: Chun In Sung , Lee Kil Sun , Hong Jongki , Do Youngkyu , Jung Ok-Sang 
Published: March 2007

Abstract
Spherical morphology with diameters of 300–500 nm is easily formed by a reaction of palladium(II) species in water with bis(nicotinoyl)-4,4′-thiophenolate in acetone and followed by evaporation of acetone. The surface hydrophilicity of the spheres is strongly dependent on the counter anions of the complexes.
Perioperative Activin A Concentrations as a Predictive Marker of Neurologic Abnormalities in Children after Open Heart Surgery
Authors: Florio Pasquale , Felipe Abella Raul , de la Torre Teresa , Giamberti Alessandro , Luisi Stefano , Butera Gianfranco , Cazzaniga Alessandro , Frigiola Alessandro , Petraglia Felice , Gazzolo Diego 
Published: March 2007

AbstractBackground: Ischemic-reperfusion injury of the brain is a major adverse event after cardiac surgery, especially when extracorporeal circuits are used. Because brain injury induces local overproduction of activin A, we measured plasma concentrations in children after open heart surgery with cardiopulmonary bypass (CPB) to investigate the potential of measuring activin A for early identification of infants at risk for brain damage.Methods: We evaluated 45 infants (age &lt;1 year) with congenital heart defects: 36 without overt neurologic injury, and 9 with neurologic injury on day 7 after the surgical procedure. Blood samples were taken before surgery, during surgery before CPB, at the end of CPB, at the end of surgery, and at 12 h after surgery. Neurologic development was assessed before surgery and on postoperative day 7.Results: Activin A concentrations increased significantly during surgery (P &lt;0.0001) to a maximum at the end of CPB. Infants who developed abnormal neurologic sequelae had concentrations significantly higher (P &lt;0.0001, all comparisons) than patients with normal neurologic outcome at all evaluated times, but not before surgery. Activin A had a sensitivity of 100% (95% CI, 66%–100%) and a specificity of 100% (95% CI, 90%–100%) as a single marker for predicting neurologic abnormalities (area under the ROC curve, 1.0).Conclusions: Activin A increases in children who experience poor neurologic outcomes after open heart surgery, and its assay may help in early identification of infants at risk for brain damage.
Quantification of Proteolytically Active Pregnancy-Associated Plasma Protein-A with an Assay Based on Quenched Fluorescence
Authors: Gyrup Claus , Christiansen Michael , Oxvig Claus 
Published: March 2007

AbstractBackground: Maternal serum concentrations of pregnancy-associated plasma protein-A (PAPP-A, pappalysin-1, EC 3.4.24.79) are used to predict the occurrence of Down syndrome. In pregnancy, PAPP-A primarily circulates as a covalent 2:2 complex with the proform of eosinophil major basic protein (proMBP), which inhibits the proteolytic activity of PAPP-A. At term, however, ∼1% of PAPP-A exists as an active, uncomplexed dimer with proteolytic activity directed specifically toward insulin-like growth factor binding protein (IGFBP)-4 and IGFBP-5. No assays have been developed that allow quantification of PAPP-A proteolytic activity.Methods: We developed a sensitive and specific immunocapture assay for PAPP-A activity based on intramolecular quenched fluorescence. We used a 26-residue synthetic peptide derived from IGFBP-4 in which specific positions on each side of the PAPP-A cleavage site were substituted with 3-nitrotyrosine and o-aminobenzoic acid.Results: The assay detected the activity of recombinant PAPP-A as well as PAPP-A in serum samples from pregnant women. The limit of detection (mean signal of blank plus 3 SD) of the active PAPP-A subunit was 13 pmol/L, and the intra- and interassay CVs were &lt;10% and &lt;15%, respectively. Interestingly, the fraction of active PAPP-A decreased gradually from week 7 to week 19 of pregnancy.Conclusions: This method allows the measurement of PAPP-A enzymatic activity and because of its specificity it is relevant to the study of the biological function of PAPP-A. The method may also be useful in the diagnosis of pregnancy disorders.
Muscle Dissatisfaction and Muscle-Enhancing Substance Use: A Population-Based Twin Study in Young Adult Men
Authors: Raevuori Anu , Keski-Rahkonen Anna , Rose Richard J. , Rissanen Aila , Kaprio Jaakko 
Published: March 2007

AbstractIn the population-based FinnTwin16 study, proportions of genetic and environmental factors contributing to muscle dissatisfaction and muscle-enhancing substance use were assessed in 319 pairs of twin brothers: 141 monozygotic (MZ) and 178 dizygotic (DZ) pairs. In addition there were 86 twin individuals from pairs in which only one co-twin responded. Of all respondents, 30% experienced high muscle dissatisfaction. The corresponding proportion of muscle-enhancing substance use was 10%. The subjects were similar in age (23.8 years, 95% confidence interval [CI] 23.76–23.84), body mass index (23.7, 95% CI 23.5–23.9), and waist circumference (84.5 cm, 95% CI 83.7–85.2), independent of their muscle dissatisfaction or muscle-enhancing substance use status and independent of their zygosity. The MZ polychoric correlation for muscle dissatisfaction was .39 (95% CI .17–.58) and .27 for DZ pairs (95% CI .07–.46). The MZ tetrachoric correlation for muscle-enhancing substance use was .65 (95% CI .28–.87) and .56 for DZ pairs (95% CI .26–.78). The AE model, where additive genetic factors (A) accounted for 42% (95% CI .23–.59) and unique environmental factors (E) 58% (95% CI .41–.77) of the liability, provided the best fit for muscle dissatisfaction. The CE model, where common environmental factors (C) accounted for 60% (95% CI .37–.77) and unique environmental factors (E) 40% (95% CI .23–.63) of the liability, provided the best fit for muscle-enhancing substance use. Both genetic and unique (nonfamilial) environmental factors are involved in muscle dissatisfaction in the population. Nongenetic factors (both familial and non-familial) appear to best explain the use of muscle-enhancing substances.
Perinatal Outcomes With Laser Surgery for Twin–Twin Transfusion Syndrome
Authors: Gray Peter H. , Cincotta Robert , Chan Fung Yee , Soong Barbara 
Published: March 2007

AbstractThe aim of this tertiary hospital–based cohort study was to determine and compare perinatal outcome and neonatal morbidities of pregnancies with twin–twin transfusion syndrome (TTTS) before and after the introduction of a treatment program with laser ablation of placental communicating vessels. Twenty-seven pregnancies with Stage II–IV TTTS treated with amnioreduction were identified (amnioreduction group). The data were compared with that obtained from the first 31 pregnancies with Stage II–IV TTTS managed with laser ablation of placental communicating vessels (laser group). Comparisons were made for perinatal survival and neonatal morbidities including abnormalities on brain imaging. The median gestation at therapy was similar between the two groups (20 vs. 21 weeks,p= .24), while the median gestation at delivery was significantly greater in the laser treated group (34 vs. 28 weeks,p= .002). The perinatal survival rate was higher in the laser group (77.4% vs. 59.3%,p= .03). Neonatal morbidities including acute respiratory distress, chronic lung disease, requirement for ventilatory assistance, patent ductus arteriosus, hypotension, and oliguric renal failure had a lower incidence in the laser group. On brain imaging, ischemic brain injury was seen in 12% of the amnioreduction group and none of the laser group of infants (p= .01). In conclusion, these findings indicate that perinatal outcomes are improved with less neonatal morbidity for monochorionic pregnancies with severe TTTS treated by laser ablation of communicating placental vessels when compared to treatment by amnioreduction.
Intrauterine Growth and Cerebral Palsy in Twins: A European Multicenter Study
Authors: Glinianaia Svetlana V. , Jarvis Stephen , Topp Monica , Guillem Pascale , Platt Mary J. , Pearce Mark S. , Parker Louise ,   on behalf of the SCPE collaboration of European Cerebral Palsy Registers
Published: March 2007

AbstractPopulation-based studies in twins have been of insufficient size to explore the relationship between risk of cerebral palsy and intrauterine growth. Earlier studies in singletons have suggested an optimum size at birth for minimum cerebral palsy risk between the 75th and 90th percentiles of weight for gestational age. We aggregated data from nine European cerebral palsy registers for 1976 to 1990. Using sex-specific fetal growth standards for twins, a z score of weight-for-gestation was derived for each of the 373 twin cases. The rates of cerebral palsy in each z-score band were compared to the rate in the a priori reference band of 0.67 to less than 1.28 (equivalent to the 75th to less than 90th percentiles). In twins born at 32 weeks' gestation or more (92% of all twins), cerebral palsy rates were higher for both light and heavy-forgestation babies compared to an optimum (i.e., minimum risk) in the reference band. However, the rate ratio for heavy babies (90th percentile or greater) did not reach conventional (95% confidence intervals [CI]) statistical significance (rate ratios = 1.76; 90% CI 1.02–3.03). For twins born at less than 32 weeks, the significantly higher risk for cerebral palsy was observed consistently in all z-score bands less than average compared to the reference band. This multi-center study demonstrates that for twins born at 32 weeks' gestation or more, an increased risk of cerebral palsy is associated with deviations from optimal intrauterine growth at about 1 standard deviation above mean weight, as was earlier reported for singletons. For twins born at less than 32 weeks' gestation, this pattern is only demonstrable for babies weighing below the optimum weight-for-gestation.
Die porphyrische Schrift ad Gaurum als
Authors: Risch Franz Xaver 
Published: March 2007

Abstract
In the little investigated, pseudo-epigraphically transmitted publication Ad Gaurum, the platonian philosopher Porphyrios defends the idea that the animation of the foetus is taking place only after birth and outside of nature. Accordingly he interprets the development of the fruit of the womb according to a both metaphysically and physically valid law of creation, in that the created can only create inferior beings than itself. Therefore, it is the mothers power of cognition that regulates the development of the embryo. The philosopher looks at the animation of a natural body as paradoxical event that is, however, in accordance with reason describable within a theological context.
Spätantike Bildungstraditionen im Umkreis des Klosters von Lerinum. Die Kompendienwerke des Eucherius von Lyon
Authors: Greschat Katharina 
Published: March 2007

Abstract
This article tries to contextualize the often neglected exegetical handbooks of Eucherius of Lyons in the late antique christian debates on pagan culture and education within a monastic context. It is intended to show that Eucherius and his short manuals represent the point of view of the famous aristocratic monastery of Lerinum in southern Gaul which was orientated towards the keeping of ecclesiastical tradition. Together with other writings they imparted to younger aristocrats the necessary knowledge to become a bishop or to take on an ecclesiastical function.
Book Reviews
Authors: Whittington Stephen L. 
Published: March 2007

Heritage of Power: Ancient Sculpture from West Mexico, The Andrall E. Pearson Family Collection by Kristi Butterwick. New York: The Metropolitan Museum of Art, 2004. 96 pp. (Co‐published with Yale University Press.)Stephen L. Whittington has been Director of the Museum of Anthropology and Adjunct Associate Professor of Anthropology at Wake Forest University since 2002. His areas of interest include museum programming, curatorship, and Mesoamerican archaeology and human osteology.
Morphological Variation of Siscowet Lake Trout in Lake Superior
Authors: Bronte Charles R. , Moore Seth A. 
Published: March 2007

AbstractHistorically, Lake Superior has contained many morphologically distinct forms of the lake trout Salvelinus namaycush that have occupied specific depths and locations and spawned at specific times of the year. Today, as was probably the case historically, the siscowet morphotype is the most abundant. Recent interest in harvesting siscowets to extract oil containing omega‐3 fatty acids will require additional knowledge of the biology and stock structure of these lightly exploited populations. The objective of this study was to determine whether shape differences exist among siscowet populations across Lake Superior and whether these shape differences can be used to infer stock structure. Morphometric analysis (truss protocol) was used to differentiate among siscowets sampled from 23 locations in Lake Superior. We analyzed 31 distance measurements among 14 anatomical landmarks taken from digital images of fish recorded in the field. Cluster analysis of size‐corrected data separated fish into three geographic groups: The Isle Royale, eastern (Michigan), and western regions (Michigan). Finer scales of stock structure were also suggested. Discriminant function analysis demonstrated that head measurements contributed to most of the observed variation. Cross‐validation classification rates indicated that 67–71% of individual fish were correctly classified to their region of capture. This is the first study to present shape differences associated with location within a lake trout morphotype in Lake Superior.
Fas Ligand Enhances Hematopoietic Cell Engraftment Through Abrogation of Alloimmune Responses and Nonimmunogenic Interactions
Authors: Pearl-Yafe Michal , Yolcu Esma S. , Stein Jerry , Kaplan Ofer , Yaniv Isaac , Shirwan Haval , Askenasy Nadir 
Published: March 2007

AbstractEarly after transplantation, donor lineage-negative bone marrow cells (lin− BMC) constitutively upregulated their expression of Fas ligand (FasL), suggesting an involvement of the Fas/FasL axis in engraftment. Following the observation of impaired engraftment in the presence of a dysfunctional Fas/FasL axis in FasL-defective (gld) donors or Fas-defective (lpr) recipients, we expressed a noncleavable FasL chimeric protein on the surface of donor lin− BMC. Despite a short life span of the protein in vivo, expression of FasL on the surface of all the donor lin− BMC improved the efficiency of engraftment twofold. The FasL-coated donor cells efficiently blunted the host alloimmune responses in primary recipients and retained their hematopoietic reconstituting potential in secondary transplants. Surprisingly, FasL protein improved the efficiency of engraftment in syngeneic transplants. The deficient engraftment in lpr recipients was not reversed in chimeric mice with Fas− stroma and Fas+ BMC, demonstrating that the host marrow stroma was also a target of donor cell FasL. Hematopoietic stem and progenitor cells are insensitive to Fas-mediated apoptosis and thus can exploit the constitutive expression of FasL to exert potent veto activities in the early stages of engraftment. Manipulation of the donor cells using ectopic FasL protein accentuated the immunogenic and nonimmunogenic interactions between the donor cells and the host, alleviating the requirement for a megadose of transplanted cells to achieve a potent veto effect.Disclosure of potential conflicts of interest is found at the end of this article.
Transferrin receptor 2 is emerging as a major player in the control of iron metabolism
Authors: Calzolari Alessia , Oliviero Isabella , Testa Ugo 
Published: March 2007

Abstract
Our knowledge of mammalian iron metabolism has advanced dramatically over recent years. Iron is an essential element for virtually all living organisms. Its intestinal absorption and accurate cellular regulation is strictly required to ensure the coordinated synthesis of the numerous iron-containing proteins involved in key metabolic processes, while avoiding the uptake of excess iron that can lead to organ damage. A range of different proteins exist to ensure this fine control within the various tissues of the body. Among these proteins, transferrin receptor (TFR2) seems to play a key role in the regulation of iron homeostasis. Disabling mutations in TFR2 are responsible for type 3 hereditary hemochromatosis (Type 3 HH). This review describes the biological properties of this membrane receptor, with a particular emphasis paid to the structure, function and cellular localization. Although much information has been garnered on TFR2, further efforts are needed to elucidate its function in the context of the iron regulatory network.
Phylogenetic relationships between and within sections Hypechusa, Narbonensis and Peregrinae of genus Vicia (Fabaceae) based on evidence from isozymes and morphology
Authors: Jaaska Vello , Leht Malle 
Published: March 2007

Abstract
Previous studies of vetch species belonging to sections Hypechusa, Narbonensis and Peregrinae have revealed controversies and open questions that deserve revisiting with the use of contemporary approaches. The paper extends the previous work of Leht and Jaaska (2002) by describing variation of 16 isozymes and 86 morphological characters among 17 Vicia species belonging to sections Hypechusa, Narbonensis and Peregrinae of the type subgenus in comparison with V. bithynica of section Pseudolathyrus. Three more isozymes and 12 new morphological characters are included to improve the resolution of phylogenetic relationships. The maximum parsimony trees based on isozymes and morphology revealed essentially the same four clusters of species that correspond to series Hypechusa and Hyrcanicae of section Hypechusa, to sections Narbonensis and Peregrinae of current taxonomy, except that the isozyme tree placed V. lutea of series Hypechusa into a separate clade. Isozyme variation in V. mollis, V. noeana, V. sericocarpa and V. ciliatula of section Hypechusa is described for the first time. Twenty-three species-specific isozymes that may be used for species identification by analysis of seeds are described. Two new isozymes that distinguish V. serratifolia from V. narbonensis are described that further support their specific status. Series Hypechusa and Hyrcanicae of section Hypechusa, sections Narbonensis and Peregrinae of traditional taxonomy are monophyletic groups that deserve sectional status within the genus Vicia. The phylogenetic position and sectional placement of V. lutea warrants further study with independent sets of DNA characters.