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https://www.readbyqxmd.com/read/28454427/chemoresistance-in-pancreatic-cancer-emerging-concepts
#1
Manu Gnanamony, Christopher S Gondi
Pancreatic cancer is one of the most lethal types of cancer in the world. The incidence of pancreatic cancer increases each year with no significant decrease in mortality. Pancreatic cancer is a complex disease, and this complexity is partly attributed to late diagnosis, an aggressive phenotype, environmental factors and lack of effective treatment options. Surgical resection followed by adjuvant chemotherapy is the treatment of choice for early stage cancer, whereas gemcitabine is the standard first line therapy for patients with advanced stage disease...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454234/gemcitabine-associated-thrombotic-microangiopathy-in-a-patient-with-lung-cancer-a-case-report
#2
Florence Lai-Tiong, Yann Duval, Francois Krabansky
Gemcitabine is frequently used for the treatment of a number of different cancer types. Gemcitabine-related thrombotic microangiopathy (TMA) has rarely been described, but it is a life-threatening complication. The incidence of the complication varies between 0.015 and 1.4%. The present study reports the case of a 63-year-old Caucasian male who was treated with 3 cycles of carboplatin plus gemcitabine, followed by 7 cycles of gemcitabine only, and developed clinical symptoms that, together with laboratory findings, were compatible with a diagnosis of hemolytic uremic syndrome TMA...
March 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454107/timing-of-chemotherapy-induced-neutropenia-the-prognostic-factor-in-advanced-pancreatic-cancer-patients-treated-with-gemcitabine-gemcitabine-based-chemotherapy
#3
Yang Chen, Yan Shi, Huan Yan, Yan Rong Wang, Guang Hai Dai
Chemotherapy-induced neutropenia (CIN) was reported to be a predictor of better survival in several cancers. The objective of our study is to evaluate the relationship between the timing (onset) of CIN and prognosis. Between June 2008 and June 2015, 134 patients with confirmed advanced pancreatic cancer received at least one cycle of gemcitabine / gemcitabine-based chemotherapy as first-line chemotherapy were eligible for assessment. Timing of CIN was categorized into early onset and non-early onset CIN group...
April 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28446717/gemcitabine-induced-heparanase-promotes-aggressiveness-of-pancreatic-cancer-cells-via-activating-egfr-signaling
#4
Jin-Wen Song, Ying-Xia Tan, Su-Bo Li, Shi-Kun Zhang, Lu-Ming Wan, Shou-Ping Ji, Hong Zhou, Zhi-Hang Zhou, Feng Gong
Pancreatic cancer (PC), characterized by aggressive local invasion and metastasis, is one of the most malignant cancers. Gemcitabine is currently used as the standard drug for the treatment of advanced and metastatic PC, but with limited efficacy. In this study, we demonstrated that gemcitabine increased the expression of heparanase (HPA1), the only known mammalian endoglycosidase capable of cleaving heparan sulfate, both in vitro and in vivo. Furthermore, overexpression of HPA1 in PC cell lines enhanced proliferation and invasion, accompanied with elevated phosphorylation of EGFR...
April 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28444967/co-delivery-of-microrna-21-antisense-oligonucleotides-and-gemcitabine-using-nanomedicine-for-pancreatic-cancer-therapy
#5
Yaqing Li, Yinting Chen, Jiajia Li, Zuoquan Zhang, Chumei Huang, Guoda Lian, Kege Yang, Shaojie Chen, Ying Lin, Lingyun Wang, Kaihong Huang, Linjuan Zeng
Tumor metastasis occurs naturally in pancreatic cancer, and the efficacy of chemotherapy is usually poor. Precision medicine, combining down-regulation of target genes with chemotherapy drugs, is expected to improve the therapeutic effects. Therefore, we developed a combined therapy of microRNA-21 antisense oligonucleotides (ASO-miR-21) and Gemcitabine (Gem) using a targeted co-delivery nanoparticle (NP) carrier and investigated the synergistic inhibitory effects on pancreatic cancer cells metastasis and growth...
April 26, 2017: Cancer Science
https://www.readbyqxmd.com/read/28443323/prevalence-of-ctr1-and-ercc1-polymorphisms-and-response-of-biliary-tract-cancer-to-gemcitabine-platinum-chemotherapy
#6
Skolchart Pongmaneratanakul, Suebpong Tanasanvimon, Thitima Pengsuparp, Nutthada Areepium
Purpose: Biliary tract cancer (BTC)is an aggressive disease with a poor prognosis. Most patients are diagnosed at an advanced stage for which curative surgery is not possible and gemcitabine-platinum chemotherapy is the treatment of choice for advanced cases. Several studies had focused on biomarkers to predict response from platinum drugs in lung cancer, but information is limited for BTC. In this study, two single nucleotide polymorphisms (SNPs) in the copper transporter (CTR1) and excision repair cross-complementary group 1 (ERCC1) genes were investigated as predictive biomarkers of objective response to gemcitabine-platinum...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28443306/gemcitabine-associated-acute-lipodermatosclerosislike-eruption-an-underrecognized-phenomenon
#7
Amit Mittal, Jonathan S Leventhal
No abstract text is available yet for this article.
May 2017: JAAD Case Reports
https://www.readbyqxmd.com/read/28441859/-dnt-cell-inhibits-the-growth-of-pancreatic-carcinoma-via-nkg2d-and-mica-pathway-in-vivo
#8
J Chen, H Xu, X X Zhu, Y Zhao, H Z Fang, J Q Zhao
Objective: To investigate the effects of natural killer group 2 member D (NKG2D) and its ligands major histocompatibility complex class Ⅰ chain-related molecules A(MICA) on DNT cell killing pancreatic carcinoma. Methods: Antibodies adsorption was used to separate DNT cell from human peripheral blood. Human pancreatic tumor models were established via implanting BXPC-3 cells into nude mice, and then mice were randomly divided mice into 3 groups, blank group, gemcitabine group and DNT group. Mice weights and mice tumor volumes were measured every 5 days...
April 25, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28441703/in-vitro-and-in-vivo-inhibitory-effects-of-%C3%AE-mangostin-on-cholangiocarcinoma-cells-and-allografts
#9
Ratchadawan Aukkanimart, Thidarut Boonmars, Pranee Sriraj, Panupan Sripan, Jiraporn Songsri, Panaratana Ratanasuwan, Porntip Laummaunwai, Parichart Boueroy, Sukhonthip Khueangchaingkhwang, Benjamabhorn Pumhirunroj, Atchara Artchayasawat, Sirintip Boonjaraspinyo, Zhiliang Wu, Chariya Hahnvajanawong, Kulthida Vaeteewoottacharn, Sopit Wongkham
We investigated the anti-cholangiocarcinoma effect of α-mangostin from Garcinia mangostana pericarp extract (GM) in a human cholangiocarcinoma (CCA) cell line and a hamster CCA allograft model. In vitro, human CCA cells were treated with GM at various concentrations and for different time periods; then cell-cycle arrest and apoptosis were evaluated using flow cytometry, and metastatic potential with wound healing assays. In vivo, hamster allografts were treated with GM, gemcitabine (positive control) and a placebo (negative control) for 1 month; tumor weight and volume were then determined...
March 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28441471/gemcitabine-integrated-nano-prodrug-carrier-system
#10
Seren Hamsici, Melis Sardan Ekiz, Goksu Cinar Ciftci, Ayse Begum Tekinay, Mustafa O Guler
Peptide nanomaterials have received a great deal of interest in drug delivery applications due to their biodegradability, biocompatibility, suitability for large scale synthesis, high drug loading capacities, targeting ability and ordered structural organization. The covalent conjugation of drugs to peptide backbone results in prolonged circulation time and improved stability of drugs. Therapeutic efficacy of gemcitabine, which is used for breast cancer treatment, is severely compromised due to its rapid plasma degradation...
April 25, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28440469/clinical-significance-of-akt2-in-advanced-pancreatic-cancer-treated-with-erlotinib
#11
Eri Banno, Yosuke Togashi, Marco A de Velasco, Takuro Mizukami, Yu Nakamura, Masato Terashima, Kazuko Sakai, Yoshihiko Fujita, Ken Kamata, Masayuki Kitano, Masatoshi Kudo, Kazuto Nishio
Akt2 is an isoform of Akt, and an association between Akt2 and resistance to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) has been suggested in pancreatic cancer (PC) in vitro. In this study, we investigated the association between Akt2 expression as evaluated using immunohistochemistry and the outcome of patients with advanced PC who had received treatment with erlotinib (an EGFR-TKI). Although the difference was not significant, patients with high levels of Akt2 expression tended to have a poorer response and a shorter progression-free survival period after treatment with erlotinib plus gemcitabine than those with low expression levels (P=0...
April 18, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28440428/inhibition-of-atr-potentiates-the-cytotoxic-effect-of-gemcitabine-on-pancreatic-cancer-cells-through-enhancement-of-dna-damage-and-abrogation-of-ribonucleotide-reductase-induction-by-gemcitabine
#12
Shuang Liu, Yubin Ge, Tingting Wang, Holly Edwards, Qihang Ren, Yiqun Jiang, Chengshi Quan, Guan Wang
Pancreatic cancer is a highly malignant disease with a dismal prognosis. Gemcitabine (GEM)-based chemotherapy is the first-line treatment for patients with advanced disease, although its efficacy is very limited, mainly due to drug resistance. Ataxia telangiectasia and Rad3-related (ATR) plays a critical role in the DNA damage response (DDR) which has been implicated in GEM resistance. Thus, targeting ATR represents a promising approach to enhance GEM antitumor activity. In the present study, we tested the antitumor activity of AZ20, a novel ATR-selective inhibitor, alone or combined with GEM in 5 pancreatic cancer cell lines...
April 19, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28435146/prognostic-analysis-of-absolute-lymphocyte-and-monocyte-counts-after-autologous-stem-cell-transplant-in-children-adolescents-and-young-adults-with-refractory-or-relapsed-hodgkin-s-lymphoma
#13
Jorge Galvez Silva, Ossama M Maher, Minjeong Park, Diane Liu, Fiorela Hernandez, Priti Tewari, Yago Nieto
Previous studies in adults have shown that peripheral blood absolute lymphocyte and monocyte count ratio (ALC/AMC) after autologous stem cell transplant (ASCT) can predict outcome in patients with relapsed/refractory Hodgkin's lymphoma (R/R HL). We retrospectively reviewed all of our children, adolescent, and young adult (CAYA) patients (age ≤26) transplanted for R/R HL between 2004 and 2015. Seventy-six patients (median age 21, range 10-26 years) who reached d100 (d100) disease free were analyzed; 33% of them had PET-positive tumors prior to ASCT...
April 20, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/28430744/activation-of-a-c-jun-n-terminal-kinase-mediated-autophagy-pathway-attenuates-the-anticancer-activity-of-gemcitabine-in-human-bladder-cancer-cells
#14
Xiao-Long Huang, Hao Zhang, Xiao-Yu Yang, Xiao-Yong Dong, Xiang-Yu Xie, Hu-Bin Yin, Xin Gou, Yong Lin, Wei-Yang He
The role of autophagy in the anticancer activity of gemcitabine (GEM) in bladder cancer is unclear. The aim of this study is to determine whether GEM activates autophagy, the role of autophagy in the anticancer activity of GEM, and the underlying mechanism by which GEM induces autophagy. Human bladder cancer cell lines T24 and BIU87 were treated with GEM in vitro. Cell viability was measured using the Cell Counting Kit-8 assay. Apoptosis was detected by annexin V assay and western blot. Autophagy was measured by western blot and transmission electron microscopy...
April 20, 2017: Anti-cancer Drugs
https://www.readbyqxmd.com/read/28428707/advanced-pancreatic-ductal-adenocarcinoma-complexities-of-treatment-and-emerging-therapeutic-options
#15
REVIEW
Chandra Diwakarla, Katherine Hannan, Nadine Hein, Desmond Yip
Pancreatic ductal adenocarcinoma is a devastating disease with a poor prognosis regardless of stage. To date the mainstay of therapy for advanced disease has been chemotherapy with little incremental improvements in outcome. Despite extensive research investigating new treatment options the current practices continue to utilise fluorouracil or gemcitabine containing combinations. The need for novel therapeutic approaches is mandated by the ongoing poor survival rates associated with this disease. One such approach may include manipulation of ribosome biogenesis and the nucleolar stress response, which has recently been applied to haematological malignancies such as lymphoma and prostate cancer with promising results...
April 7, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28428513/-comparison-of-preparation-efficiency-and-therapeutic-safety-between-generic-products-of-gemcitabine
#16
Yuhki Sato, Hiroyuki Ono, Kohei Amada, Ryosuke Nakahara, Hiroki Itoh
Because generic medicines reduce the financialburden on patients and medicalinsurance providers, they have become increasingly popular. However, there are only a few reports that have analyzed the efficacy and safety of generic medicines, especially in terms of their characteristics and side effects. Gemcitabine is an antineoplastic drug that is frequently used with good results in the treatment of lung cancer, pancreatic cancer, breast cancer, ovarian cancer, and malignant lymphoma. However, its fat solubility is high, and several adverse events, such as myelosuppression, are known to develop during its use...
April 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/28428074/melittin-inhibits-tumor-growth-and-decreases-resistance-to%C3%A2-gemcitabine-by-downregulating-cholesterol-pathway-gene%C3%A2-clu%C3%A2-in%C3%A2-pancreatic-ductal-adenocarcinoma
#17
Xinjing Wang, Jing Xie, Xiongxiong Lu, Hongzhe Li, Chenlei Wen, Zhen Huo, Junjie Xie, Minmin Shi, Xiaomei Tang, Hao Chen, Chenghong Peng, Yuan Fang, Xiaxing Deng, Baiyong Shen
Melittin is a Chinese traditional medicine for treating chronic inflammation, immunological diseases and cancers, however, the efficacy of melittin and its mechanism for treating pancreatic ductal adenocarcinoma (PDAC) are still unknown. Here we investigated the anti-cancer activity of melittin and its regulated mechanism(s) in the PDAC models. Melittin was found to suppress tumor growth by promoting cell apoptosis and cell-cycle arrest. Interestingly, the microarray analyses demonstrated that melittin significantly regulated cholesterol biosynthesis pathway during treatment...
April 17, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28426279/combination-of-gemcitabine-and-docetaxel-regress-both-gastric-leiomyosarcoma-proliferation-and-invasion-in-an-imageable-patient-derived-orthotopic-xenograft-ipdox-model
#18
Kei Kawaguchi, Kentaro Igarashi, Takashi Murakami, Tasuku Kiyuna, Scott D Nelson, Sarah M Dry, Yunfeng Li, Tara A Russell, Arun S Singh, Bartosz Chmielowski, Michiaki Unno, Fritz C Eilber, Robert M Hoffman
Gastric leiomyosarcoma is a recalcitrant cancer and chemotherapy strategy is controversial. The present study used a patient-derived orthotopic xenograft (PDOX) nude mouse model of gastric leiomyosarcoma to identify an effective therapeutic regimen in order to develop individualized precision medicine for this disease. A gastric leiomyosarcoma obtained from a patient was first grown in transgenic nude mice ubiquitously expressing red fluorescent protein (RFP) in order to stably label the tumor stroma. The RFP-expressing tumor was then passaged orthotopically in the gastric wall of non-transgenic nude mice to establish an imageable PDOX (iPDOX) model...
April 20, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28424962/phase-i-dose-escalation-study-of-milciclib-in-combination-with-gemcitabine-in-patients-with-refractory-solid-tumors
#19
Sandrine Aspeslagh, Kunwar Shailubhai, Rastilav Bahleda, Anas Gazzah, Andréa Varga, Antoine Hollebecque, Christophe Massard, Anna Spreafico, Michele Reni, Jean-Charles Soria
BACKGROUND: This phase I trial evaluated the safety and tolerability of milciclib, an inhibitor of multiple cyclin-dependent kinases and tropomycin receptor kinase A, in combination with gemcitabine in patients with refractory solid tumors. DESIGN: Sixteen patients were enrolled and treated with milciclib at three dose levels (45 mg/m(2)/day, n = 3; 60 mg/m(2)/day, n = 3; and 80 mg/m(2)/day, n = 10) with a fixed dose of gemcitabine (1000 mg/m(2)/day). Milciclib was administered orally once daily for 7 days on/7 days off in a 4-week cycle, and gemcitabine was administered intravenously on days 1, 8 and 15 in a 4-week cycle...
April 19, 2017: Cancer Chemotherapy and Pharmacology
https://www.readbyqxmd.com/read/28424838/improved-oncologic-outcome-with-chemoradiotherapy-followed-by-surgery-in-unresectable-intrahepatic-cholangiocarcinoma
#20
Yeona Cho, Tae Hyung Kim, Jinsil Seong
PURPOSE: To investigate the ability of chemoradiotherapy (CRT) to down-stage unresectable intrahepatic cholangiocarcinoma (IHCC) to resectable lesions, as well as the factors associated with achieving such down-staging. METHODS: The study cohort comprised 120 patients diagnosed with stage I-IVA IHCC between 2001 and 2012. Of these patients, 56 underwent surgery and 64 received CRT as their initial treatment. The rate of curative resections for patients who received CRT was assessed, and the locoregional failure-free survival (LRFFS) and overall survival (OS) rates of these patients were compared to those of patients who underwent CRT alone...
April 19, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
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