bluuebunny/crossref_metadata_2025_split huggingface dataset:
Unrestricted faecal calprotectin testing performs poorly in the diagnosis of inflammatory bowel disease in patients in primary care
Authors: Conroy Samantha , Hale Melissa F , Cross Simon S , Swallow Kirsty , Sidhu Reena H , Sargur Ravishankar , Lobo Alan J 
Published: August 2017

BackgroundFaecal calprotectin (FC) measurement distinguishes patients with inflammatory bowel disease (IBD) from those with irritable bowel syndrome but evidence of its performance in primary care is limited.AimsTo assess the yield of IBD from FC testing in primary care.MethodsRetrospective review of hospital records to assess the outcome following FC testing in primary care. Investigations for all patients undergoing FC testing in a single laboratory for 6 months from 1 October 2013 to 28 February 2014 were reviewed.Results410 patients (162 male; median age 42; range 16–91) were included. FC>50 µg/g was considered positive (FC+). 148/410 (36.1%; median age 44 (17–91)) were FC+ (median FC 116.5 µg/g (51–1770)). 122/148 FC-positive patients (82.4%) underwent further investigation. 97 (65.5%) underwent lower gastrointestinal endoscopy (LGIE), of which 7 (7.2%) had IBD. 49/262 (18.7%) FC-negative (FC−) patients (FC ≤50 µg/g) (median age 47 (19–76)) also underwent LGIE, of whom 3 (6.1%) had IBD.IBD was diagnosed in 11/410 (2.7%; 4 ulcerative colitis, 3 Crohn’s disease, 4 microscopic colitis). 8/11 were FC+ (range 67–1170) and 3 FC−. At a 50 µg/g threshold, sensitivity for detecting IBD was 72.7%, specificity 64.9%, positive predictive value (PPV) 5.41% and negative predictive value 98.9%. Increasing the threshold to 100 µg/g reduced the sensitivity of the test for detecting IBD to 54.6%.ConclusionsFC testing in primary care has low sensitivity and specificity with poor PPV for diagnosing IBD. Its use needs to be directed to those with a higher pretest probability of disease. Local services and laboratories should advise general practitioners accordingly.
Targeting the anterior superior iliac spine yields significantly longer bone marrow cores
Authors: Reed Louis , Attarian Shirin , Pendurti Gopichand , Singh Aditi P , Budhathoki Anjali , Abi-Aad Simon , Shah Urvi A , Kim Salem , Bachiashvili Kimo , Moon Jee Young , Kim Mimi , Elrafei Tarek , Alexis Karenza , Strakhan Marianna , Li Weijuan , Friedman Ellen 
Published: August 2017

Pathologists and haematologists generally agree that the length of the biopsy core is a good surrogate for the diagnostic quality of the bone marrow. Previous studies suggested that the angulation of the biopsy needle from the posterior superior iliac spine (PSIS) could influence the length of the biopsy cores, targeting the anterior superior iliac spine (ASIS) from the PSIS would yield longer specimens than the traditional angulation technique (TAT), where the biopsy needle is directed straight in, perpendicular to the plane of the back. Twenty five adult haematology patients were prospectively recruited by haematologists-in-training (HITs), who were trained to target the ASIS using a lateral angulationtechnique (LAT). The mean length of biopsy cores was 16 mm and that was significantly longer (p=0.003) than a comparable group of bone marrow biopsies previously obtained by HITs using the TAT approach. These results support the LAT as a new standard of haematology practice.Trial registration numberNCT 02524613
Diagnostic accuracy of interleukin 27 for tuberculous pleural effusion: two prospective studies and one meta-analysis
Authors: Wang Wen , Zhou Qiong , Zhai Kan , Wang Yao , Liu Jing-Yuan , Wang Xiao-Juan , Wang Zhen , Zhang Jian-Chu , Tong Zhao-Hui , Shi Huan-Zhong 
Published: August 2017

BackgroundAccurate differentiating diagnosis is essential for choosing treatment for exudative pleural effusions.ObjectiveTo establish the diagnostic accuracy of interleukin 27 for tuberculous pleural effusion (TPE).MethodsFirst, the concentrations of pleural interleukin 27, interferon-gamma and adenosine deaminase were compared between 51 patients with TPE and 103 with non-TPEs (Beijing cohort), and their diagnostic values were evaluated. These were further verified in another independent population (Wuhan cohort, n=120). In the second part of the study, we performed a meta-analysis.ResultsWith a cut-off value of 591.4 ng/L in the Beijing cohort, the area under the curve, sensitivity, specificity, positive predictive value and negative predictive value of interleukin 27 to diagnose TPE were 0.983 (95% CI 0.947 to 0.997), 96.1% (86.5% to 99.5%), 99.0% (94.7% to 100%), 98.0 (89.4 to 99.9) and 98.1 (93.3 to 99.8), respectively. Excellent diagnostic accuracy of interleukin 27 was also found in the Wuhan cohort and was further confirmed in the meta-analysis. The diagnostic performance of interleukin 27 was comparable to that of interferon-gamma and was more accurate than that of adenosine deaminase. Since the post-test probability of a negative result was always <0.1%, a negative test was considered to exclude TPE in all tuberculosis prevalence settings.ConclusionsInterleukin 27 can be used to diagnose TPE in a high prevalence setting, and a negative result can also be reliably used to rule out TPE in all prevalence settings.
Measurement of the enthalpy of formation of an iron pico-hydride and of its main properties
Authors: Dufour Jacques , Dufour Xavier , Dioury Fabienne , Vinko Jenny D. 
Published: August 2017

Chemical reactions result from the outside shell electrons of the reacting species being shared in various types of combinations. Typical distances involved are tenths of nm, resulting in binding energies typically in the order of hundreds of kJ/mole (eV/atom). The synthesis of a novel “atomic system” formed from Iron and di-Hydrogen has been achieved. The measured enthalpy of formation is some 40 MJ/moleFe and the distance between the hydrogen proton and the iron nucleus is some 8 pm, hence the proposed name: Iron Pico-Hydride. This compound is a permanent electric dipole of atomic size. Pico-Hydrides could, thus, play a significant role in HT superconductivity and in super-capacitors. The synthesis is compatible with the standard model.
MET–GRB2 Signaling-Associated Complexes Correlate with Oncogenic MET Signaling and Sensitivity to MET Kinase Inhibitors
Authors: Smith Matthew A. , Licata Thomas , Lakhani Aliya , Garcia Marileila Varella , Schildhaus Hans-Ulrich , Vuaroqueaux Vincent , Halmos Balazs , Borczuk Alain C. , Chen Y. Ann , Creelan Benjamin C. , Boyle Theresa A. , Haura Eric B. 
Published: August 2017

Abstract
Purpose: Targeting MET in cancer is hampered by lack of diagnostics that accurately reflect high MET signaling and dependence. We hypothesized that assays reflecting MET signaling associated protein complexes could redefine tumors dependent on MET and could add additional precision beyond genomic assessments.
Experimental Design: We used biochemical approaches, cellular viability studies, and proximity ligation assays to assess MET dependence. We examined MET signaling complexes in lung cancer patient specimens (N = 406) and patient-derived xenograft (PDX) models of solid tumors (N = 308). We evaluated response to crizotinib in a MET-amplified cohort of PDX models of lung cancer (N = 6) and provide a case report of a lung cancer patient harboring a Δexon14 MET splice variant.
Results: We found the interaction of MET with the adaptor protein GRB2 is necessary for oncogenic survival signaling by MET. MET-GRB2 complexes were identified only within MET-amplified PDX models and patient specimens but exhibit substantial variability. Lack of MET-GRB2 complexes was associated with lack of response to MET TKI in cell lines and PDX models. Presence of MET-GRB2 complexes can further subtype tumors with Δexon14 MET splice variants. Presence of these complexes correlated with response to crizotinib in one patient with Δexon14 MET lacking MET gene amplification.
Conclusions: Proximity assays measuring MET-GRB2 signaling complexes provide novel insights into MET-mediated signaling and could complement current clinical genomics-based assay platforms. Clin Cancer Res; 23(22); 7084–96. ©2017 AACR.
FOXD3 Regulates CSC Marker, DCLK1-S, and Invasive Potential: Prognostic Implications in Colon Cancer
Authors: Sarkar Shubhashish , O'Connell Malaney R. , Okugawa Yoshinaga , Lee Brian S. , Toiyama Yuji , Kusunoki Masato , Daboval Robert D. , Goel Ajay , Singh Pomila 
Published: August 2017

Abstract
The 5′ (α)-promoter of the human doublecortin-like kinase 1 (DCLK1) gene becomes epigenetically silenced during colon carcinogenesis, resulting in loss of expression of the canonical long(L)-isoform1 (DCLK1-L) in human colon adenocarcinomas (hCRCs). Instead, hCRCs express a short(S)-isoform2 (DCLK1-S) from an alternate (β)-promoter of DCLK1. The current study, examined if the transcriptional activity of the (β)-promoter is suppressed in normal versus cancerous cells. On the basis of in silico and molecular approaches, it was discovered that FOXD3 potently inhibits the transcriptional activity of the (β)-promoter. FOXD3 becomes methylated in human colon cancer cells (hCCC), with loss of FOXD3 expression, allowing expression of the DCLK1(S) variant in hCCCs/hCRCs. Relative levels of FOXD3/DCLK1(S/L) were measured in a cohort of CRC patient specimens (n = 92), in relation to overall survival (OS). Patients expressing high DCLK1(S), with or without low FOXD3, had significantly worse OS compared with patients expressing low DCLK1(S). The relative levels of DCLK1-L did not correlate with OS. In a pilot retrospective study, colon adenomas from high-risk patients (who developed CRCs in &lt;15 years) demonstrated significantly higher staining for DCLK1(S) + significantly lower staining for FOXD3, compared with adenomas from low-risk patients (who remained free of CRCs). Latter results strongly suggest a prognostic value of measuring DCLK1(S)/FOXD3 in adenomas. Overexpression of DCLK1(S), but not DCLK1(L), caused a significant increase in the invasive potential of hCCCs, which may explain worse outcomes for patients with high DCLK1-S–expressing tumors. On the basis of these data, FOXD3 is a potent repressor of DCLK1-S expression in normal cells; loss of FOXD3 in hCCCs/hCRCs allows upregulation of DCLK1-S, imparting a potent invasive potential to the cells. Mol Cancer Res; 15(12); 1678–91. ©2017 AACR.
RETRACTED: Tobacco-Specific Carcinogens Induce Hypermethylation, DNA Adducts, and DNA Damage in Bladder Cancer
Authors: Jin Feng , Thaiparambil Jose , Donepudi Sri Ramya , Vantaku Venkatrao , Piyarathna Danthasinghe Waduge Badrajee , Maity Suman , Krishnapuram Rashmi , Putluri Vasanta , Gu Franklin , Purwaha Preeti , Bhowmik Salil Kumar , Ambati Chandrashekar R. , von Rundstedt Friedrich-Carl , Roghmann Florian , Berg Sebastian , Noldus Joachim , Rajapakshe Kimal , Gödde Daniel , Roth Stephan , Störkel Stephan , Degener Stephan , Michailidis George , Kaipparettu Benny Abraham , Karanam Balasubramanyam , Terris Martha K. , Kavuri Shyam M. , Lerner Seth P. , Kheradmand Farrah , Coarfa Cristian , Sreekumar Arun , Lotan Yair , El-Zein Randa , Putluri Nagireddy 
Published: August 2017

Abstract
Smoking is a major risk factor for the development of bladder cancer; however, the functional consequences of the carcinogens in tobacco smoke and bladder cancer–associated metabolic alterations remain poorly defined. We assessed the metabolic profiles in bladder cancer smokers and non-smokers and identified the key alterations in their metabolism. LC/MS and bioinformatic analysis were performed to determine the metabolome associated with bladder cancer smokers and were further validated in cell line models. Smokers with bladder cancer were found to have elevated levels of methylated metabolites, polycyclic aromatic hydrocarbons, DNA adducts, and DNA damage. DNA methyltransferase 1 (DNMT1) expression was significantly higher in smokers than non-smokers with bladder cancer. An integromics approach, using multiple patient cohorts, revealed strong associations between smokers and high-grade bladder cancer. In vitro exposure to the tobacco smoke carcinogens, 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone and benzo[a]pyrene (BaP) led to increase in levels of methylated metabolites, DNA adducts, and extensive DNA damage in bladder cancer cells. Cotreatment of bladder cancer cells with these carcinogens and the methylation inhibitor 5-aza-2'-deoxycytidine rewired the methylated metabolites, DNA adducts, and DNA damage. These findings were confirmed through the isotopic-labeled metabolic flux analysis. Screens using smoke-associated metabolites and DNA adducts could provide robust biomarkers and improve individual risk prediction in bladder cancer smokers. Noninvasive predictive biomarkers that can stratify the risk of developing bladder cancer in smokers could aid in early detection and treatment. Cancer Prev Res; 10(10); 588–97. ©2017 AACR.
Comparative Advantages and Demand in the New Competitive Ricardian Models
Authors: Cinquetti Carlos A. 
Published: August 2017

We survey the new Ricardian models of bilateral trade, which are seen as tractable structure for multi-country trade models addressing either cost or demand linkages to trade. Cost-based Ricardian models advance new forms of comparative advantages that are irrespective of autarky price and, in some cases, even of opportunity cost. A less noticed feature is their reliance in demand function that does not disturb cost-based prices. Demand-based Ricardian models hinge especially on non-homothetic preferences for asymmetric goods and the supply-side ordering of goods mirrors the demand-side ordering. We also critically discuss extensions of these latter competitive models to trade in quality. We further seek to identify all these models vis-à-vis the Ricardo–Haberler–Deardorff tradition. JEL: F10, 019, D5
Comparison of the Effects of Osteochondral Autograft Transplantation With Platelet-Rich Plasma or Platelet-Rich Fibrin on Osteochondral Defects in a Rabbit Model
Authors: Maruyama Masahiro , Satake Hiroshi , Suzuki Tomoto , Honma Ryusuke , Naganuma Yasushi , Takakubo Yuya , Takagi Michiaki 
Published: August 2017

Background: Although osteochondral autograft transplantation (OAT) provides satisfactory outcomes for osteochondral defects, for large defects OAT is often inadequate because of graft availability. Osteochondral allograft transplantation is an alternative treatment for large defects, but this approach is limited by graft storage constraints and carries disease transmission risks. Platelet-rich fibrin (PRF) is a second-generation platelet concentrate, and its positive effect on articular cartilage has been reported. However, the effect of PRF with OAT of osteochondral defects is unknown. Purpose: To compare the effects of OAT with platelet-rich plasma (PRP) and PRF on osteochondral defects in a rabbit model. Study Design: Controlled laboratory study. Methods: Forty-two juvenile rabbits were divided into control, PRP, and PRF groups. In the control and PRP groups, a cylindrical osteochondral defect (5 mm in diameter and 2 mm in depth) was created on the patellar groove, and an osteochondral graft (3.5 mm in diameter and 5 mm in length) harvested from the contralateral side was inserted into the distal portion of the defect. After wound closure, either normal saline or PRP was injected in the knee. In the PRF group, a PRF clot was placed in the defect before grafting. The surgical site was macroscopically and histologically assessed after 3 and 12 weeks. Results: At 3 weeks, the PRF group (n = 8) was macroscopically healed compared with the other 2 groups (control, n = 7; PRP, n = 6) ( P < .005). Histologically, osteochondral graft cartilage of the PRF group had normal cellularity and higher amounts of safranin O staining relative to the other 2 groups ( P < .005). At 12 weeks, all 3 groups (n = 8 per group) were macroscopically healed with normal or nearly normal cartilage, and osteochondral graft cartilage was histologically hyaline cartilage. In contrast, the PRF group healed with hyaline-like cartilage at nongrafted defects, whereas the other 2 groups healed with fibrocartilage ( P < .001). Conclusion: OAT with PRF maintained hyaline cartilage, and the nongrafted defect healed with hyaline-like cartilage. Clinical Relevance: PRF has the potential to improve clinical outcomes of OAT used to treat osteochondral lesions.
Advances in Sputum Analysis for Screening and Early Detection of Lung Cancer
Authors: Tockman Melvyn S. 
Published: August 2017

Background Screening for lung cancer using currently available techniques is not effective in reducing mortality from the disease. Methods Archived sputum specimens and clinical data linking specimens to lung cancer outcomes from prior screening programs have been reexamined to evaluate altered gene expressing, including specific oncogene activation and tumor suppressor gene deletion, as well as genomic instability and abnormal methylation. Results Several of these tests allow determination of a molecular diagnosis of cancer years before clinical presentation. Conclusions These sputum tests provide an impetus to reconsider screening for lung cancer. Prospective trials are required to confirm test performance characteristics, and management and intervention strategies must be developed that are appropriate to the stage at which lung cancer is diagnosed.
Thyroid Cancer: Extent of Thyroidectomy
Authors: Shaha Ashok R. 
Published: August 2017

Background Surgical resection is the key to management of thyroid cancer, but determining the optimal surgical procedure for individual cases has been controversial. Methods The author reviews several large data bases that allow examination of prognostic criteria for long-term outcomes. Results Patients can be classified into good- or poor-risk groups that assist defining the optimal surgical procedure. Routine use of total thyroidectomy in all patients with thyroid cancer is best avoided; however, patients with medullary cancer generally need total thyroidectomy. Conclusions The definition of risk groups has clarified the options regarding choice of primary surgical therapy for differentiated thyroid cancer.
Neoadjuvant Androgen Ablation in Localized Carcinoma of the Prostate
Authors: Kish Julie A. 
Published: August 2017

Background An increased awareness of prostate cancer has led to a rise in the detection of this disease at a clinically localized stage at presentation. This article discusses the role of neoadjuvant hormonal ablation at this earlier stage to decrease tumor bulk and thus enhance survival. Method Outcomes from each primary modality for localized treatment of prostate cancer with and without neoadjuvant androgen deprivation (NAAD) are reviewed. Results Survival benefit using NAAD has not yet been demonstrated from prostatectomy. Long-term hormonal deprivation provides an improved time to progression and has decreased distant metastatic and biochemical failure for poor-risk patients undergoing external-beam radiation. The toxicities of brachytherapy can be decreased with NAAD. Conclusions NAAD with radical prostatectomy is considered to be investigational. The duration of NAAD needs to be delineated for poor-prognosis patients who are treated with external-beam radiation therapy, but the approach improves the local toxicity of brachytherapy.
The Expanding Role of Epirubicin in the Treatment of Breast Cancer
Authors: Glück Stefan 
Published: August 2017

Adjuvant treatment of early breast cancer has experienced major changes in the last 25 years. Since the mid 1970s, when cyclophosphamide, methotrexate and fluorouracil (CMF) resulted in statistically significant and clinically meaningful improvements in disease-free and overall survival, the use of adjuvant chemotherapy has become common practice worldwide. Anthracyclines are considered to be among the most active available agents to treat breast cancer and have become core components of adjuvant regimens. Anthracycline-containing polychemotherapy regimens provide a significant benefit over CMF. Regimens containing epirubicin are generally associated with prolongation in relapse-free and overall survival rates compared with standard therapies including CMF. Epirubicin-taxane combinations are active in treating metastatic breast cancer and do not appear to be associated with any pharmacokinetic interactions. Ongoing research is focusing on combining anthracyclines with taxanes in an effort to continue to improve outcomes following adjuvant therapy.
The Role of Prevalence in the Diagnosis of Prostate Cancer
Authors: Delongchamps Nicolas B. , Singh Amar , Haas Gabriel P. 
Published: August 2017

Background The worldwide incidence of prostate cancer has been rising rapidly, likely due to intensified effort in early detection and screening. Intense effort is also directed at novel schemas of chemoprevention and therapy. Incidence data are insufficient to identify the true magnitude of prostate cancer in a given population. The true prevalence of prostate cancer must be identified. Methods We reviewed the latest worldwide epidemiologic data and clinical studies on prostate cancer studying the true prevalence of this disease. Results The incidence of prostate cancer is increasing worldwide, with strong variation among regions. Prevalence studies based on autopsy data have confirmed a high frequency of latent prostate cancer in men of all ages. More aggressive screening measures using a lower prostate-specific antigen (PSA) threshold, together with an increasing number of biopsies, have escalated the detection of these latent cancers. Conclusions Recent improvements in prostate cancer detection narrow the gap between the incidence and true prevalence of prostate cancer. This, however, raises concerns about the risk of over detection of latent cancers and thus identifying a need for improvement in screening strategies to better identify clinically significant disease.
Impacting Health Disparities through Community Outreach: Utilizing the CLEAN Look (Culture, Literacy, Education, Assessment, and Networking)
Authors: Meade Cathy D. , Menard Janelle , Martinez Dinorah , Calvo Arlene 
Published: August 2017

Background Community outreach programs are important vehicles for reducing the discovery-delivery disconnect by bringing cancer education and screening services directly to community members. Such programs are consistent with the priority areas of the Department of Health and Human Services’ initiatives for reducing health disparities by 2010, and they support the use of culturally, linguistically, and literacy-specific approaches for eliminating cancer health disparities. Methods This article reviews the important tenets of culture and literacy when developing community outreach programs for medically underserved populations, examines a health education empowerment model for community program planning, and describes the use of the CLEAN Look Checklist (in which CLEAN is an easy-to-remember mnemonic of culture, literacy, education, assessment, and networking) for identifying cues and strategies to achieve relevant outreach. Results This article illustrates the application of this approach with an example of outreach strategies for reaching at-risk Haitian American women in our community. Conclusions Meeting the challenge of a strong health disparities agenda requires integration of cultural and literacy considerations in outreach program, message, and intervention development. The use of a checklist may help clinicians, educators, and researchers create a sustainable model of community outreach guided by a paradigm that incorporates a multilevel approach to address cancer outcomes for disenfranchised populations.