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https://www.readbyqxmd.com/read/29547823/comparisons-of-the-spectroscopic-and-microbiological-activities-among-coumarin-3-carboxylate-o-phenanthroline-and-zinc-ii-complexes
#1
María S Islas, Juan J Martínez Medina, Oscar E Piro, Gustavo A Echeverría, Evelina G Ferrer, Patricia A M Williams
Coumarins (2H-chromen-2-one) are oxygen-containing heterocyclic compounds that belong to the benzopyranones family. In this work we have synthesized different coordination complexes with coumarin-3-carboxylic acid (HCCA), o-phenanthroline (phen) and zinc(II). In the reported [Zn(CCA)2 (H2 O)2 ] complex, coumarin-3-carboxylate (CCA) is acting as a bidentate ligand while in the two prepared complexes, [Zn(phen)3 ]CCA(NO3 ) (obtained as a single crystal) and [Zn(CCA)2 phen].4H2 O, CCA is acting as a counterion of the complex cation [Zn(phen)3 ]+2 or coordinated to the metal center along with phen, respectively...
March 7, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29507912/optimal-matrix-preparation-methods-for-matrix-assisted-laser-desorption-ionisation-time-of-flight-mass-spectrometry-profiling-of-low-molecular-weight-peptides-in-human-saliva-and-serum-samples
#2
Lu Gao, Yan Gu, Feng Chen, Qing Wei Ma
OBJECTIVE: To develop standard experimental methods to minimise technical variance in matrix preparation for MALDI-TOF MS (matrix-assisted laser desorption/ionisation time-offlight) profiling. METHODS: Matrix factors in saliva and serum samples of 20 healthy volunteers were examined, assuring their peptide components using seven different matrix type/preparation methods, HCCA(a-cyano-4-hydroxycinnamic acid)/SM(sample/matrix), SA(sinapinic acid)/DD(dried droplet), SA/SM, DHB(2...
2018: Chinese Journal of Dental Research
https://www.readbyqxmd.com/read/29470820/the-impact-of-intraoperative-re-resection-of-a-positive-bile-duct-margin-on-clinical-outcomes-for-hilar-cholangiocarcinoma
#3
Xu-Feng Zhang, Malcolm H Squires, Fabio Bagante, Cecilia G Ethun, Ahmed Salem, Sharon M Weber, Thuy Tran, George Poultsides, Andre Y Son, Ioannis Hatzaras, Linda Jin, Ryan C Fields, Matthew Weiss, Charles Scoggins, Robert C G Martin, Chelsea A Isom, Kamron Idrees, Harveshp D Mogal, Perry Shen, Shishir K Maithel, Carl R Schmidt, Timothy M Pawlik
BACKGROUND: The impact of re-resection of a positive intraoperative bile duct margin on clinical outcomes for resectable hilar cholangiocarcinoma (HCCA) remains controversial. We sought to define the impact of re-resection of an initially positive frozen-section bile duct margin on outcomes of patients undergoing surgery for HCCA. METHODS: Patients who underwent curative-intent resection for HCCA between 2000 and 2014 were identified at 10 hepatobiliary centers...
February 22, 2018: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/29404753/defining-early-recurrence-of-hilar-cholangiocarcinoma-after-curative-intent-surgery-a-multi-institutional-study-from-the-us-extrahepatic-biliary-malignancy-consortium
#4
Xu-Feng Zhang, Eliza W Beal, Jeffery Chakedis, Qinyu Chen, Yi Lv, Cecilia G Ethun, Ahmed Salem, Sharon M Weber, Thuy Tran, George Poultsides, Andre Y Son, Ioannis Hatzaras, Linda Jin, Ryan C Fields, Stefan Buettner, Charles Scoggins, Robert C G Martin, Chelsea A Isom, Kamron Idrees, Harveshp D Mogal, Perry Shen, Shishir K Maithel, Carl R Schmidt, Timothy M Pawlik
BACKGROUND: Time to tumor recurrence may be associated with outcomes following resection of hepatobiliary cancers. The objective of the current study was to investigate risk factors and prognosis among patients with early versus late recurrence of hilar cholangiocarcinoma (HCCA) after curative-intent resection. METHODS: A total of 225 patients who underwent curative-intent resection for HCCA were identified from 10 academic centers in the USA. Data on clinicopathologic characteristics, pre-, intra-, and postoperative details and overall survival (OS) were analyzed...
February 5, 2018: World Journal of Surgery
https://www.readbyqxmd.com/read/29285229/relationship-of-tumor-size-with-pathological-and-prognostic-factors-for-hilar-cholangiocarcinoma
#5
Hai-Jie Hu, Rong-Xing Zhou, Anuj Shrestha, Yong-Qiong Tan, Wen-Jie Ma, Qin Yang, Jiong Lu, Jun-Ke Wang, Yong Zhou, Fu-Yu Li
Objective: To determine the correlation of different tumor-size cutoffs with prognostic factors and survival outcomes to provide a reference for the modification of the T-stage classification in the DeOliveira staging system for hilar cholangiocarcinoma (HCCA). Materials and Methods: We retrospectively analyzed 216 patients who underwent curative surgery for HCCA (mean tumor diameter, 2.8 cm) between 2000 and 2013. Univariate and multivariate logistic regression were used to assess the correlation of tumor-size cutoffs with various factors...
December 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/29205351/oncologic-effects-of-preoperative-biliary-drainage-in-resectable-hilar-cholangiocarcinoma-percutaneous-biliary-drainage-has-no-adverse-effects-on-survival
#6
Xu-Feng Zhang, Eliza W Beal, Katiuscha Merath, Cecilia G Ethun, Ahmed Salem, Sharon M Weber, Thuy Tran, George Poultsides, Andre Y Son, Ioannis Hatzaras, Linda Jin, Ryan C Fields, Matthew Weiss, Charles Scoggins, Robert C G Martin, Chelsea A Isom, Kamron Idrees, Harveshp D Mogal, Perry Shen, Shishir K Maithel, Carl R Schmidt, Timothy M Pawlik
BACKGROUND AND OBJECTIVES: The objective of the current study was to define long-term survival of patients with resectable hilar cholangiocarcinoma (HCCA) after preoperative percutaneous transhepatic biliary drainage (PTBD) versus endoscopic biliary drainage (EBD). METHODS: Between 2000 and 2014, 240 patients who underwent curative-intent resection for HCCA were identified at 10 major hepatobiliary centers. Postoperative morbidity and mortality, as well as disease-specific survival (DSS) and recurrence-free survival (RFS) were analyzed among patients...
December 4, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29200730/comparative-proteomic-analysis-of-three-gelatinous-chinese-medicines-and-their-authentications-by-tryptic-digested-peptides-profiling-using-matrix-assisted-laser-desorption-ionization-time-of-flight-time-of-flight-mass-spectrometry
#7
Huan Yang, Jie Zheng, Hai-Yan Wang, Nan Li, Ya-Ya Yang, Yu-Ping Shen
Background: Gelatinous Chinese medicines (GCMs) including Asini Corii Colla, Testudinis Carapacis ET Plastri Colla, and Cervi Cornus Colla, were made from reptile shell or mammalian skin or deer horn, and consumed as a popular tonic, as well as hemopoietic and hemostatic agents. Misuse of them would not exert their functions, and fake or adulterate products have caused drug market disorder and affected food and drug safety. GCMs are rich in denatured proteins, but insufficient in available DNA fragments, hence commonly used cytochrome c oxidase I barcoding was not successful for their authentication...
October 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/29141394/proximal-resection-margins-more-prognostic-than-distal-resection-margins-in-patients-undergoing-hilar-cholangiocarcinoma-resection
#8
Tae Yoo, Sang-Jae Park, Sung-Sik Han, Seong Hoon Kim, Seung Duk Lee, Tae Hyun Kim, Soon-Ae Lee, Sang Myung Woo, Woo Jin Lee, Eun Kyung Hong
Purpose: Even though the therapeutic gold standard of hilar cholangiocarcinoma(HCCA) resection is cancer-free resection margin(RM), surgical treatment still remains challenging. This study evaluated the prognostic significance of RM status in resected HCCA patients and identified survival prognostic factors. Materials and Methods: We reviewed records of 96 HCCA patients who underwent surgery from 2001 to 2012 and analyzed the RM status and prognostic factors that affecting survival...
November 16, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/29039079/a-long-term-survivor-of-hilar-cholangiocarcinoma-with-resection-of-recurrent-peritoneal-dissemination-after-r0-surgery-a-case-report
#9
Tatsunori Miyata, Hirohisa Okabe, Akira Chikamoto, Takanobu Yamao, Naoki Umezaki, Masayo Tsukamoto, Yuki Kitano, Kota Arima, Shigeki Nakagawa, Katsunori Imai, Daisuke Hashimoto, Yo-Ichi Yamashita, Hideo Baba
BACKGROUND: Although hilar cholangiocarcinoma (HCCA) has a very poor prognosis, there are cases in which long-term survival is rarely obtained by multidisciplinary treatment. CASE PRESENTATION: A 61-year-old man diagnosed with HCCA was referred to our hospital. We performed an extended left hemi-hepatectomy and caudate lobectomy with extrahepatic bile duct resection. The tumor stage was T2aN0M0, stage II, based on the TNM classification, seventh edition. R0 resection was successfully performed...
October 16, 2017: Surgical Case Reports
https://www.readbyqxmd.com/read/28982905/immunohistochemical-comparison-of-malignancy-between-radial-invasion-and-mucosal-extension-in-hilar-cholangiocarcinoma
#10
COMPARATIVE STUDY
Kenichi Yoshida, Ryusei Matsuyama, Ryutaro Mori, Takafumi Kumamoto, Kenichi Matsuo, Kazuhisa Takeda, Mitsutaka Sugita, Yoshiro Fujii, Kuniya Tanaka, Hiroshi Shimada, Itaru Endo
AIM: To compare the cells of mucosal extension (ME) and radial invasion (RI) in hilar cholangiocarcinoma (HCCA) for optimal resection. MATERIALS AND METHODS: Forty-six patients underwent surgery for HCCA between 1992 and 2004. Immunohistochemical expressions of p53, Ki-67, matrix metalloproteinase-7 (MMP7), mucin 1 (MUC1), and E-cadherin were assessed at five different sites of the tumour and compared between the recurrence and non-recurrence groups. RESULTS: Expression of E-cadherin was significantly lower in RI cells than in ME cells, and that of MMP7 and MUC1 was significantly higher in RI cells than in ME cells...
October 2017: Anticancer Research
https://www.readbyqxmd.com/read/28873258/the-inherent-matrix-properties-of-lichen-metabolites-in-matrix-assisted-laser-desorption-ionization-time-of-flight-mass-spectrometry
#11
Pierre Le Pogam, Joël Boustie, Pascal Richomme, Antoine Denis, Andreas Schinkovitz
RATIONALE: Light-absorbing secondary metabolites from lichens were recently reported to exhibit promising Laser Desorption Ionization (LDI) properties, enabling their direct detection from crude lichen extracts. In addition, many of them display close structural homologies to commercial Matrix-Assisted Laser Desorption Ionization (MALDI) matrices, which is incentive for the evaluation of their matrical properties. The current study systematically evaluated the matrix effects of several structural classes of lichen metabolites: monoaromatic compounds, quinone derivatives, dibenzofuran-related molecules and the shikimate-derived vulpinic acid...
December 15, 2017: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28837013/six-change-ideas-that-significantly-minimize-alternate-level-of-care-alc-days-in-acute-care-hospitals
#12
Paula Chidwick, Jill Oliver, Daniel Ball, Christopher Parkes, Terri Lynn Hansen, Francesca Fiumara, Kiki Ferrari, Cindy Hawkswell, Karyn Lumsden
A significant issue affecting the healthcare system across Ontario is the number of patients admitted to hospitals that are then subsequently being designated alternate level of care (ALC). In 2016, 14.5% of Ontario in-patient beds were occupied by ALC-designated patients. Contributing to this phenomenon are ethical errors that can affect decision-making around discharge. Since 2012, William Osler Health System has redesigned their discharge process to eliminate ethical errors and align more fully with the Health Care Consent Act (HCCA) and the Public Hospitals Act (PHA)...
2017: Healthcare Quarterly
https://www.readbyqxmd.com/read/28588786/isolated-brain-metastases-prior-to-locoregional-recurrence-in-hilar-cholangiocarcinoma
#13
Zhimin Yu, Junyao Xu, Jie Wang
Isolated brain metastases prior to locoregional recurrence from hilar cholangiocarcinoma (HCCA) following curative resection are an extremely rare event. Very few reports regarding brain metastasis prior to locoregional recurrence following curative resection have been published due to the fact that to differentiate brain metastases from HCCA recurrence is challenging, particular in the early stages, since the neurological findings of brain metastasis are occult and subtle. Any patient with HCCA who has undergone radical resection and subsequently presented with a further onset of neurological symptoms should be evaluated for brain involvement...
June 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28420927/in-silico-analysis-of-fragile-histidine-triad-involved-in-regression-of-carcinoma
#14
Muhammad Asif Rasheed, Fatima Tariq, Sara Afzal, Shazia Mannanv
Hepatocellular carcinoma (HCCa) is a primary malignancy of the liver. Many different proteins are involved in HCCa including insulin growth factor (IGF) II , signal transducers and activators of transcription (STAT) 3, STAT4, mothers against decapentaplegic homolog 4 (SMAD 4), fragile histidine triad (FHIT) and selective internal radiation therapy (SIRT) etc. The present study is based on the bioinformatics analysis of FHIT protein in order to understand the proteomics aspect and improvement of the diagnosis of the disease based on the protein...
April 2017: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/28412280/evaluation-of-sample-preparation-protocols-for-spider-venom-profiling-by-maldi-tof-ms
#15
Ondřej Bočánek, Ondrej Šedo, Stano Pekár, Zbyněk Zdráhal
Spider venoms are highly complex mixtures containing biologically active substances with potential for use in biotechnology or pharmacology. Fingerprinting of venoms by Matrix-Assisted Laser Desorption-Ionization - Time of Flight Mass Spectrometry (MALDI-TOF MS) is a thriving technology, enabling the rapid detection of peptide/protein components that can provide comparative information. In this study, we evaluated the effects of sample preparation procedures on MALDI-TOF mass spectral quality to establish a protocol providing the most reliable analytical outputs...
July 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28238541/igg4-related-sclerosing-cholangitis-overlapping-with-autoimmune-hepatitis-report-of-a-case
#16
Hongyan Li, Li Sun, David R Brigstock, Lina Qi, Runping Gao
BACKGROUND: IgG4-related sclerosing cholangitis (IgG4-SC) is the biliary manifestation of IgG4-related disease (IgG4-RD) but the presence of IgG4-SC in the porta hepatis is difficult to differentiate from hilar cholangiocarcinoma (HCCA). IgG4-related autoimmune hepatitis (IgG4-related AIH) is extremely rare and it is not fully clear whether IgG4-related AIH is a hepatic manifestation of IgG4-RD or a subtype of AIH. CASE PRESENTATION: We present a rare case of a 52-year-old male who was admitted with obstructive jaundice and itchy skin...
May 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28059437/long-non-coding-rna-malat1-interacts-with-mir-204-to-modulate-human-hilar-cholangiocarcinoma-proliferation-migration-and-invasion-by-targeting-cxcr4
#17
Xinyu Tan, Zhiguo Huang, Xiaogang Li
Metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) is involved in the development and progression of many types of tumors. An aberrant expression of MALAT1 was observed in many kinds of cancers. However, the exact effects and molecular mechanisms of MALAT1 in human hilar cholangiocarcinoma (HCCA) progression are still unknown. Here, we investigated the role of MALAT1 in human HCCA cell lines and clinical tumor samples in order to determine the function of this lncRNA. In our research, lncRNA-MALAT1 was specifically upregulated in HCCA tissues and cell lines, and was associated with pathological T stage, a larger tumor size, and perineural invasion...
November 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/28008757/identification-and-quantification-of-potential-anti-inflammatory-hydroxycinnamic-acid-amides-from-wolfberry
#18
Siyu Wang, Joon Hyuk Suh, Xi Zheng, Yu Wang, Chi-Tang Ho
Wolfberry or Goji berry, the fruit of Lycium barbarum, exhibits health-promoting properties that leads to an extensive study of their active components. We synthesized a set of hydroxycinnamic acid amide (HCCA) compounds, including trans-caffeic acid, trans-ferulic acid, and 3,4-dihydroxyhydrocinnamic acid, with extended phenolic amine components as standards to identify and quantify the corresponding compounds from wolfberry and to investigate anti-inflammatory properties of these compounds using in vitro model...
January 18, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/27908774/increased-incorporation-of-gaseous-co-2-into-succinate-by-escherichia-coli-overexpressing-carbonic-anhydrase-and-phosphoenolpyruvate-carboxylase-genes
#19
Soohyun Park, Jae-Ung Lee, Sukhyeong Cho, Hyeonsoo Kim, Han Bin Oh, Seung Pil Pack, Jinwon Lee
Carbon dioxide (CO2 ) is an abundant and cheap carbon source that is partly responsible for global warming in the atmosphere. The objective of this study was to construct a recombinant E. coli strain that can show enhanced production of succinate derived from CO2 . In this study, we confirmed the enhancement of utilization by analyzing succinate containing one carbon-13 (13 C) derived from13 CO2 . Firstly, the carbonic anhydrase gene (SP(-)HCCA) derived from Hahella chejuensis KCTC 2396 was over-expressed to enhance carbon flux toward bicarbonate ion (HCO3 - ) synthesis in E...
January 10, 2017: Journal of Biotechnology
https://www.readbyqxmd.com/read/27750102/maldi-ms-analysis-and-theoretical-evaluation-of-olanzapine-as-a-uv-laser-desorption-ionization-ldi-matrix
#20
Syed Ghulam Musharraf, Mariam Ameer, Arslan Ali
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) being soft ionization technique, has become a method of choice for high-throughput analysis of proteins and peptides. In this study, we have explored the potential of atypical anti-psychotic drug olanzapine (OLZ) as a matrix for MALDI-MS analysis of peptides aided with the theoretical studies. Seven small peptides were employed as target analytes to check performance of olanzapine and compared with conventional MALDI matrix α-cyano-4-hydroxycinnamic acid (HCCA)...
January 5, 2017: Journal of Pharmaceutical and Biomedical Analysis
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