bluuebunny/crossref_metadata_2025_split huggingface dataset:
Autosomal dominant polycystic kidney disease with ectopic unilateral multicystic dysplastic kidney
Authors: Xu Jing , Chen Dong-Ping , Mao Zhi-Guo , Huang He-Feng , Xu Chen-Ming , Wang Cong-Rong , Jia Wei-Ping , Mei Chang-Lin 
Published: February 2013

Abstract

Background
Autosomal dominant polycystic kidney disease (ADPKD) is the most common hereditary renal disorder. In most cases, ADPKD similarly affects bilateral kidneys.

Case presentation
Among the 605 ADPKD patients that were followed up by our center, we identified two male patients with unilateral ADPKD. The cases were remarkable because the patients also had ectopia and multicystic dysplasia in the contralateral kidney, which are generally sporadic disease conditions. Both patients tested positive for polycystic kidney disease 1 mutation, but negative for hepatocyte nuclear factor 1 beta mutation. Moreover, the deterioration of their kidney function seemed to be quicker than their age- and sex-matched controls and siblings. Both patients had started a long-term hemodialysis in their 40s.

Conclusion
Anatomical and genetic abnormality in patients with ADPKD may be more frequent and complex than previously believed. The compensatory capacity in patients with ADPKD is fragile, and missing one kidney could accelerate the deterioration of renal function.
Fibroblast growth factor-23 and calcium phosphate product in young chronic kidney disease patients: a cross-sectional study
Authors: Yasin Abeer , Liu Daisy , Chau Luan , Madrenas Joaquín , Filler Guido 
Published: February 2013

Abstract

Background
Fibroblast growth factor-23 (FGF-23), a novel marker of bone disease in chronic kidney disease (CKD) has been shown to correlate with vascular calcifications. We aimed to describe the effect of the calcium phosphate product (Ca*P) on FGF-23 concentrations in children and young adults without confounding cardiovascular disease.

Methods
Pediatric and young adult patients with CKD stages I-V were recruited in this cross sectional study to measure FGF-23, cystatin C, vitamin D-metabolites and other serum markers of bone metabolism. FGF-23 levels were determined with an enzyme-linked immunosorbent assay. The association between FGF-23 and (Ca*P) was assessed using non-parametric methods. Patients were divided into two age groups, less than 13 years of age and greater than 13 years of age.

Results
This cross-sectional study measured serum FGF-23, in 81 patients (42 females, 51.9%) at London Health Sciences Centre, aged 2 to 25 years, with various stages of CKD (Cystatin C estimated glomerular filtration rate, eGFR=10.7-213.0 ml/min). For the whole entire group of patients, FGF-23 levels were found to correlate significantly with age (Spearman r= 0.26, p=0.0198), Cystatin C eGFR (Spearman r=−0.40 p=0.0002), CKD stage (Spearman r=0.457, p<0.0001), PTH (Spearman r=0.330, p=0.0039), ionized calcium (Spearman r=−0.330, p=0.0049), CysC (Spearman r= 0.404, p=0.0002) and 1,25-dihydroxyvitamin D (Spearman r=−0.345, p=0.0034) concentrations. No significant correlation was found between FGF-23 levels and calcium phosphate product (Spearman r= 0.164, p=0.142). Upon classification of patients into two age groups, less than 13 years of age and more than 13 years of age, correlational results differed significantly. FGF-23 correlated with CysC eGFR( Spearman r= −0.633, p<0.0001), CKD stage (Spearman r=0.731, p<0.0001), phosphate (Spearman r= 0.557, p<0.0001), calcium phosphate product (Spearman r=0.534, p<0.0001), 125(OH)2 Vit D (Spearman r=−0.631, p<0.0001), PTH (Spearman r= 0.475, p=0.0017) and ionized calcium (Spearman r= −0.503, p=0.0015) only in the older group. The relationship between FGF-23 and Ca*P for the older group could be expressed by the exponential model FGF-23= 38.15 e0.4625Ca*P.

Conclusion
Abnormal values of FGF-23 in adolescents and young adults with CKD correlate with Ca* P in the absence of vascular calcifications, and may serve as a biomarker for the risk of cardiovascular calcifications.
Attitudes towards the administration of long-acting antipsychotics: a survey of physicians and nurses
Authors: Geerts Paul , Martinez Guadalupe , Schreiner Andreas 
Published: February 2013

Abstract

Background
Discontinuation of antipsychotic treatment for schizophrenia can interrupt improvement and exacerbate the illness. Reasons for discontinuing treatment are multifactorial and include adherence, efficacy and tolerability issues. Poor adherence may be addressed through non-pharmacological approaches as well as through pharmacological ones, ie ensured delivery of medication, such as that achieved with long-acting injectable (LAI) antipsychotics. However, attitudes of healthcare professionals (HCPs) towards LAI antipsychotics may influence their prescribing decisions and may influence medication choices offered to patients. We therefore conducted a survey to investigate factors driving LAI use as well as physician and nurse attitudes to LAI antipsychotics and to different injection sites.

Methods
An independent market research agency conducted the survey of HCPs across Europe. Participants were recruited by telephone and completed the survey online. Using conjoint analyses (a multivariate statistical technique analysing preferences on the basis of ranking a limited number of attributes which are presented repetitively), attitudes to oral versus LAI medication and gluteal versus deltoid injection routes were assessed.

Results
A total of 891 HCPs across Europe were surveyed. Of these, 40% would choose LAI antipsychotics for first episode patients whereas 90% would select LAI antipsychotics for chronic patients with two to five psychotic episodes. Dominant elements in antipsychotic choice were low sedation but no tardive dyskinesia, no or mild pain at injection and low risk of embarrassment or impact upon therapeutic alliance. Eighty-six per cent of respondents considered that having the choice of a deltoid as well as gluteal administration site was beneficial over not having that choice. Two thirds of respondents said they agreed that medication administration via the deltoid muscle may reduce social embarrassment associated with LAI antipsychotics and most respondents (61%) believed that administration of LAI antipsychotics into the deltoid muscle as opposed to the gluteal muscle may be more respectful to the patient.

Conclusions
In this survey of physicians and nurses, attitudes towards LAI antipsychotics compared with oral medication were generally positive. Respondents considered that the availability of a deltoid administration route would offer increased choice in LAI antipsychotic administration and may be perceived as more respectful and less socially embarrassing.
What is the extent of potentially avoidable admissions amongst hospital inpatients with palliative care needs?
Authors: Gott Merryn , Gardiner Clare , Ingleton Christine , Cobb Mark , Noble Bill , Bennett Michael I , Seymour Jane 
Published: February 2013

Abstract

Background
There is clear evidence that the full range of services required to support people dying at home are far from being implemented, either in England or elsewhere. No studies to date have attempted to identify the proportion of hospital admissions that could have been avoided amongst patients with palliative care needs, given existing and current local services. This study aimed to examine the extent of potentially avoidable admissions amongst hospital patients with palliative care needs.

Methods
A cross sectional survey of palliative care needs was undertaken in two acute hospitals in England. Appropriateness of admission was assessed by two Palliative Medicine Consultants using the following data collected from case notes: reasons for admission; diagnosis and co-morbidities; age and living arrangements; time and route of admission; medical and nursing plan on admission; specialist palliative care involvement; and evidence of cognitive impairment.

Results
A total of 1359 inpatients were present in the two hospitals at the time of the census. Of the 654 consenting patients/consultees, complete case note data were collected for 580 patients; the analysis in this paper relates to these 580 patients. Amongst 208 patients meeting diagnostic and prognostic criteria for palliative care need in two acute settings in England, only 6.7% were identified as ‘potentially avoidable’ hospitalisations. These patients had a median age of 84. Half of the patients lived in residential or nursing homes and it was concluded that most could have received care in this setting in place of hospital.

Conclusion
Our findings challenge assumptions that, within the existing configuration of palliative and end of life health and social care services, patients with palliative care needs experience a high level of potentially avoidable hospitalisations.
Investigating the association between birth weight and complementary air pollution metrics: a cohort study
Authors: Laurent Olivier , Wu Jun , Li Lianfa , Chung Judith , Bartell Scott 
Published: February 2013

Abstract

Background
Exposure to air pollution is frequently associated with reductions in birth weight but results of available studies vary widely, possibly in part because of differences in air pollution metrics. Further insight is needed to identify the air pollution metrics most strongly and consistently associated with birth weight.

Methods
We used a hospital-based obstetric database of more than 70,000 births to study the relationships between air pollution and the risk of low birth weight (LBW, <2,500 g), as well as birth weight as a continuous variable, in term-born infants. Complementary metrics capturing different aspects of air pollution were used (measurements from ambient monitoring stations, predictions from land use regression models and from a Gaussian dispersion model, traffic density, and proximity to roads). Associations between air pollution metrics and birth outcomes were investigated using generalized additive models, adjusting for maternal age, parity, race/ethnicity, insurance status, poverty, gestational age and sex of the infants.

Results
Increased risks of LBW were associated with ambient O3 concentrations as measured by monitoring stations, as well as traffic density and proximity to major roadways. LBW was not significantly associated with other air pollution metrics, except that a decreased risk was associated with ambient NO2 concentrations as measured by monitoring stations. When birth weight was analyzed as a continuous variable, small increases in mean birth weight were associated with most air pollution metrics (<40 g per inter-quartile range in air pollution metrics). No such increase was observed for traffic density or proximity to major roadways, and a significant decrease in mean birth weight was associated with ambient O3 concentrations.

Conclusions
We found contrasting results according to the different air pollution metrics examined. Unmeasured confounders and/or measurement errors might have produced spurious positive associations between birth weight and some air pollution metrics. Despite this, ambient O3 was associated with a decrement in mean birth weight and significant increases in the risk of LBW were associated with traffic density, proximity to roads and ambient O3. This suggests that in our study population, these air pollution metrics are more likely related to increased risks of LBW than the other metrics we studied. Further studies are necessary to assess the consistency of such patterns across populations.
Implications of purinergic receptor-mediated intracellular calcium transients in neural differentiation
Authors: Glaser Talita , Resende Rodrigo R , Ulrich Henning 
Published: February 2013

AbstractPurinergic receptors participate, in almost every cell type, in controlling metabolic activities and many physiological functions including signal transmission, proliferation and differentiation. While most of P2Y receptors induce transient elevations of intracellular calcium concentration by activation of intracellular calcium pools and forward these signals as waves which can also be transmitted into neighboring cells, P2X receptors produce calcium spikes which also include activation of voltage-operating calcium channels. P2Y and P2X receptors induce calcium transients that activate transcription factors responsible for the progress of differentiation through mediators including calmodulin and calcineurin. Expression of P2X2 as well as of P2X7 receptors increases in differentiating neurons and glial cells, respectively. Gene expression silencing assays indicate that these receptors are important for the progress of differentiation and neuronal or glial fate determination. Metabotropic receptors, mostly P2Y1 and P2Y2 subtypes, act on embryonic cells or cells at the neural progenitor stage by inducing proliferation as well as by regulation of neural differentiation through NFAT translocation. The scope of this review is to discuss the roles of purinergic receptor-induced calcium spike and wave activity and its codification in neurodevelopmental and neurodifferentiation processes.
Synthesis and properties of Fe3O4-activated carbon magnetic nanoparticles for removal of aniline from aqueous solution: equilibrium, kinetic and thermodynamic studies
Authors: Kakavandi Babak , Jonidi Ahmad , Rezaei Roshanak , Nasseri Simin , Ameri Ahmad , Esrafily Ali 
Published: February 2013

Abstract
In this study, powder activated carbon (PAC) and magnetic nanoparticles of iron (III) oxide were used for synthesis of Fe3O4-activated carbon magnetic nanoparticles (AC-Fe3O4 MNPs) as an adsorbent for the removal of aniline. The characteristics of adsorbent were evaluated by SEM, TEM, XRD and BET. Also, the impact of different parameters such as pH, contact time, adsorbent dosage, aniline initials concentration and solution temperature were studied. The experimental data investigated by Langmuir and Freundlich adsorption isotherms and two models kinetically of pseudo first-order and pseudo second-order. The results indicated that the adsorption followed Langmuir and pseudo second-order models with correlation r2 > 0.98 and r2 > 0.99, respectively. The equilibrium time was obtained after 5 h. According to Langmuir model, the maximum adsorption capacity was 90.91 mg/g at pH = 6, and 20°C. The thermodynamic parameters indicated that adsorption of aniline on magnetic activated carbon was exothermic and spontaneous. This synthesized AC-Fe3O4 MNPs due to have advantages such as easy and rapid separation from solution could be applied as an adsorbent effective for removal of pollutants such as aniline from water and wastewater.
Rosmarinic acid protects against experimental diabetes with cerebral ischemia: relation to inflammation response
Authors: Luan Haiyun , Kan Zechun , Xu Yong , Lv Changjun , Jiang Wanglin 
Published: February 2013

Abstract

Background
Inflammatory activation plays a vital role in the pathophysiological mechanisms of stroke, exerting deleterious effects on the progression of tissue damage and may lead to the vascular damage in diabetes. The objectives of this study were to determine the effects of rosmarinic acid (RA) on a cultured neuronal cell line, SH-SY5Y in vitro and experimental ischemic diabetic stroke in vivo.

Methods
For oxygen-glucose deprivation (OGD) and tumor necrosis factor-α (TNF-α) stimulated SH-SY5Y cell line in vitro, SH-SY5Y cells were incubated with RA. For an in vivo experiment, diabetic rats were subjected to middle cerebral artery occlusion (MACO) for 40 minutes followed by reperfusion for 23 h.

Results
Treatment of SH-SY5Y cells with RA reduced the OGD-induced apoptosis and cytotoxicity, blocked TNF-α-induced nuclear transcription factor κB (NF-κB) activation, and decreased high-mobility group box1 (HMGB1) expression. At doses higher than 50 mg/kg, RA produced a significant neuroprotective potential in rats with ischemia and reperfusion (I/R). RA (50 mg/kg) demonstrated significant neuroprotective activity even after delayed administration at 1 h, 3 h and 5 h after I/R. RA 50 mg/kg attenuated histopathological damage, decreased brain edema, inhibited NF-κB activation and reduced HMGB1 expression.

Conclusion
These data show that RA protects the brain against I/R injury with a favorable therapeutic time-window by alleviating diabetic cerebral I/R injury and attenuating blood–brain barrier (BBB) breakdown, and its protective effects may involve HMGB1 and the NF-κB signaling pathway.
Hydrogen Sulfide Increases Excitability through Suppression of Sustained Potassium Channel Currents of Rat Trigeminal Ganglion Neurons
Authors: Feng Xingmei , Zhou You-Lang , Meng Xiaowen , Qi Fei-Hu , Chen Wei , Jiang Xinghong , Xu Guang-Yin 
Published: February 2013

Background Hydrogen sulfide (H2S), an endogenous gaseotransmitter/modulator, is becoming appreciated that it may be involved in a wide variety of processes including inflammation and nociception. However, the role and mechanism for H2S in nociceptive processing in trigeminal ganglion (TG) neuron remains unknown. The aim of this study is to investigate distribution of endogenous H2S synthesizing enzyme cystathionine-β-synthetase (CBS) expression and role of H2S on excitability and voltage-gated potassium channels of TG neurons. Methods Immunofluorescence studies were carried out to determine whether CBS was co-expressed in Kv1.1 or Kv1.4-positive TG neurons. Whole cell patch clamp recordings were employed on acutely isolated TG neurons from adult male Sprague Dawley rats (6–8 week old). von Frey filaments were used to examine the pain behavioral responses in rats following injection of sodium hydrosulfide. Results In rat TG, 77.3±6.6% neurons were immunoreactive for CBS, 85.1±3.8% for Kv1.1 and 97.8±1.1% for Kv1.4. Double staining showed that all CBS labeled cells were Kv1.1 and Kv1.4 positive, but only 92.2±6.1% of Kv1.1 and 78.2±9.9% of Kv1.4 positive cells contained CBS. Application of H2S donor NaHS (250 μM) led to a significant depolarization of resting membrane potential recorded from TG neurons. NaHS application also resulted in a dramatic reduction in rheobase, hyperpolarization of action potential threshold, and a significant increase in the number of action potentials evoked at 2X and 3X rheobase stimulation. Under voltage-clamp conditions, TG neurons exhibited transient A-type ( IA) and sustained outward rectifier K+ currents ( IK). Application of NaHS did suppress IK density while did not change IA density of TG neurons (n=6). Furthermore, NaHS, a donor of hydrogen sulfide, produced a significant reduction in escape threshold in a dose dependent manner. Conclusion These data suggest that endogenous H2S generating enzyme CBS was co-localized well with Kv1.1 and Kv1.4 in TG neurons and that H2S produces the mechanic pain and increases neuronal excitability, which might be largely mediated by suppressing IK density, thus identifying for the first time a specific molecular mechanism underlying pain and sensitization in TG.
Use of the Breathlessness, Cough, and Sputum Scale (BCSS©) in Pulmonary Rehabilitation§
Authors: McCarroll Michele L , Pohle-Krauza Rachael J , Volsko Teresa A , Martin Jennifer L , Krauza Matthew L 
Published: February 2013

Background:
In pulmonary rehabilitation (PR) effective measures have been taken while in analyzing a patient’s intervention with the help of entry to exit evaluations. The absence of an objective and quantifiable scale are limitations of PR that allow analyzing of a patient’s self reported symptoms throughout PR. The Breathlessness, Cough and Sputum Scale (BCSS©) is used to predict patient exacerbations by evaluating common symptoms identified in the COPD population. This study used the BCSS© survey to track complex symptom changes throughout the course of PR intervention. The BCSS© tool measured the patient’s self reported symptoms in real time for each visit when patient enrolled in PR.

Methods:
Thirty-five patients with COPD from three outpatient PR centers were asked to report the severity of breathlessness, cough, and sputum prior to each PR session using the BCSS© survey.

Results:
There was a significant decrease in self reported symptoms of the mean BCSS© score from entry 4.6(± 2.9) to exit 2.3 (± 2.5), p < 0.001. The results showed variable decrease in the self reported symptoms with more PR visits. The secondary outcome showed high correlations with quality of life measures using the Pulmonary Function Status Scale (PFSS) on entry and exit to PR.

Conclusions:
The BCSS© tool is an effective means for measuring the impact of PR on improving patient tolerance and self-reported symptoms as a result of COPD. More research is needed to better assess the complex symptoms of COPD patients in PR to enhance programmatic outcomes.
Complacency and Giving Up Across Repeated Tournaments: Evidence from the Field
Authors: Berger Leslie , Klassen Kenneth J. , Libby Theresa , Webb Alan 
Published: February 2013

ABSTRACT
Tournament incentive schemes involve individuals competing against each other for a single or limited number of rewards (e.g., promotion, bonus, pay raise). Although research shows tournament schemes can have positive effects on performance, there is also evidence of dysfunctional intra-tournament behavior by top performers (complacency) and weak performers (giving up). However, few studies have examined behavior in organizational settings, not uncommon in practice, where tournaments are conducted on a repeated basis. We predict that complacency and giving up will generalize to settings where individuals repeatedly compete in successive short-duration tournaments. We test our predictions using archival data from a reservation center of a major hotel chain that employs repeated four-week tournaments where performance does not carryover from one competition to the next. Results show top performers quickly become complacent in response to success in early tournaments. The lowest-performing losers in early tournaments eventually appear to give up, but additional analysis indicates they only do so after unsuccessfully changing task strategy. Our results contribute to a better understanding of individual behavior in settings where individuals repeatedly compete against largely the same group of employees. Our evidence also suggests that tournaments are less effective at sustaining the motivation of the most capable performers and other approaches may be necessary.
La forme dialogique dans le Periphyseon : recréer l'esprit
Authors: Kendig Elizabeth , Lamrani Lila 
Published: February 2013

Résumé La forme dialogique, en l’occurrence l’échange entre le Nutritor et l’ Alumnus , constitue la caractéristique la plus évidente du Periphyseon d’Érigène, mais elle est curieusement considérée comme normale dans la plupart des discussions portant sur l’œuvre. Cet article examine la nature et la fonction des deux personnages du dialogue, ainsi que leur relation, en suggérant que le dialogue du Periphyseon pourrait en fait être un monologue intérieur dédoublé. L’examen des indices trouvés dans les livres IV et V met en évidence les différentes façons dont l’ Alumnus fonctionne comme un véhicule rhétorique qui donne l’impulsion à la spirale ascendante de la discussion. En plus de servir de modèle à l’auditoire cible du Periphyseon , le personnage de l’ Alumnus fournit une occasion pour le Nutritor – prétendument la voix supérieure de la dialectique – de développer ses arguments et de se convaincre pleinement, élevant ainsi la discussion à un niveau supérieur. Dans ce processus, les personnages de l’Alumnus et du Nutritor deviennent ensemble l’exemple incarné de l’un des points principaux de la philosophie idéaliste d’Érigène : dans un dialogue entre participants, lorsque l’un connaît ce que l’autre connaît, l’un est créé dans l’autre de manière ineffable, et ils forment une même connaissance.