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https://www.readbyqxmd.com/read/29773904/methanol-fixed-fibroblasts-serve-as-feeder-cells-to-maintain-stem-cells-in-the-pluripotent-state-in-vitro
#1
Yahui Ren, Ziyu Ma, Tong Yu, Min Ling, Huayan Wang
Preparation of mouse embryonic fibroblast (MEF) feeder cells to maintain pluripotent stem cells (PSCs) is time consuming and involved in animal issues. Here, we demonstrated a novel method to prepare feeder cells with high efficiency, timesaving, and low costs. MEFs in 3 × 104 cell/cm2 were fixed by methanol for 5 min and air drying for 5 min. Thereafter, the methanol fixed MEF cells (MT-MEF) were able to be used directly to culture PSCs or stored at room temperature for the future usage. PSCs cultured on MT-MEF could be continuously expanded for over 40 passages with the naïve pluripotency...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773200/lithium-chloride-attenuates-mitomycin-c-induced-necrotic-cell-death-in-mda-mb-231-breast-cancer-cells-via-hmgb1-and-bax-signaling
#2
Mahdieh Razmi, Azra Rabbani-Chadegani, Fatemeh Hashemi-Niasari, Parinaz Ghadam
The clinical use of potent anticancer drug mitomycin C (MMC) has limited due to side effects and resistance of cancer cells. The aim of this study was to investigate whether lithium chloride (LiCl), as a mood stabilizer, can affect the sensitivity of MDA-MB-231 breast cancer cells to mitomycin C. The cells were exposed to various concentrations of mitomycin C alone and combined with LiCl and the viability determined by trypan blue and MTT assays. Proteins were analyzed by western blot and mRNA expression of HMGB1 MMP9 and Bcl-2 were analyzed by RT-PCR...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29769143/clinical-outcome-of-elderly-patients-%C3%A2-70-years-with-esophageal-cancer-undergoing-definitive-or-neoadjuvant-radio-chemo-therapy-a-retrospective-single-center-analysis
#3
Franziska Walter, David Böckle, Nina-Sophie Schmidt-Hegemann, Rebecca Köpple, Sabine Gerum, Stefan Boeck, Martin Angele, Claus Belka, Falk Roeder
BACKGROUND: To analyse the outcome of elderly patients (≥70 years) with esophageal cancer treated with curative intent radio(chemo)therapy. METHODS: Fifty five patients (median 75 years) receiving curative intent radio(chemo)therapy for esophageal cancer from 1999 to 2015 were retrospectively analyzed. Most patients showed locally advanced disease (T3/4:78%, N+:58%) with squamous cell histology (74%). Charlson comorbidity score was > 1 in 27%. 48 patients (87%) received definitive treatment while 7 patients were treated neoadjuvantly...
May 16, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29767247/comparison-of-the-synergistic-anticancer-activity-of-alpcs4-photodynamic-therapy-in-combination-with-different-low%C3%A2-dose-chemotherapeutic-agents-on-gastric-cancer-cells
#4
Jing Xin, Senhao Wang, Luwei Zhang, Bo Xin, Yulu He, Jing Wang, Sijia Wang, Lijian Shen, Zhenxi Zhang, Cuiping Yao
Limited cellular delivery and internalization efficiency of Al(III) phthalocyanine chloride tetrasulfonic acid (AlPcS4) induce poor penetration ability in cells and a slight photodynamic therapy (PDT) effect on gastric cancer. The combination treatment of AlPcS4/PDT with low‑dose chemotherapeutic agents may provide a promising treatment strategy to increase the weak delivery efficiency of AlPcS4, reducing the dose of chemical agents without reducing efficacy, and improving apoptosis‑inducing abilities, thereby increasing the antitumor effects and decreasing the noxious side effects on gastric cancer...
May 16, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29761828/differential-micronucleus-frequency-in-isogenic-human-cells-deficient-in-dna-repair-pathways-is-a-valuable-indicator-for-evaluating-genotoxic-agents-and-their-genotoxic-mechanisms
#5
Liton Kumar Saha, Sujin Kim, Habyeong Kang, Salma Akter, Kyungho Choi, Tetsushi Sakuma, Takashi Yamamoto, Hiroyuki Sasanuma, Kouji Hirota, Jun Nakamura, Masamitsu Honma, Shunichi Takeda, S Dertinger
The micronucleus (MN) test has become an attractive tool both for evaluating the genotoxicity of test chemicals because of its ability to detect clastogenic and aneugenic events and for its convenience. As the MN assay has been mostly performed using only DNA repair-proficient mammalian cells, we believed that the comparison of the MN frequency between DNA repair-proficient and -deficient human cells may be an excellent indicator for detecting the genotoxic potential of test chemicals and for understanding their mode of action...
May 15, 2018: Environmental and Molecular Mutagenesis
https://www.readbyqxmd.com/read/29755663/the-ongoing-challenge-of-large-anal-cancers-prospective-long-term-outcomes-of-intensity-modulated-radiation-therapy-with-concurrent-chemotherapy
#6
Ali Hosni, Kathy Han, Lisa W Le, Jolie Ringash, James Brierley, Rebecca Wong, Robert Dinniwell, Anthony Brade, Laura A Dawson, Bernard J Cummings, Monika K Krzyzanowska, Eric X Chen, David Hedley, Jennifer Knox, Alexandra M Easson, Patricia Lindsay, Tim Craig, John Kim
Purpose: Patterns of failure and long term outcomes were prospectively evaluated following tumor factors-stratified radiation dose for anal/perianal cancer. Methods: Between 2008-2013, patients with anal/perianal squamous cell carcinoma were accrued to an institutional REB-approved prospective study. All patients were treated with image-guided intensity-modulated radiation therapy (IG-IMRT). Radiation dose selection (27-36 Gy for elective target, and 45-63 Gy for gross target) was based on tumor clinico-pathologic features...
April 17, 2018: Oncotarget
https://www.readbyqxmd.com/read/29745935/-sequential-treatment-with-mitomycin-c-and-bcg-in-non-muscle-invasive-bladder-cancer
#7
Venancio Chantada-Abal, Cristina Chantada-Tirado, Leticia Lamas-Díaz, Francisco Caramés-Masana, Anselmo Damián Villegas-Piguave, Nuria Villar-Vázquez
Bacilus Calmette-Guerin (BCG) administered intravesical is an effective therapy in non muscle invasive bladder cancer (NMIBC), but it presents limitations regarding recurrence and toxicity. For years, many case series have been published where sequential therapy with BCG and Mitomycin C (MMC) was tried. In this article, we perform a review of the data supplied by these articles with the aim to determine the safety and efficacy of combination, and what is the group of patients it should be indicated. Many studies show that combination therapy did not cause more toxicity and improved the interval free of disease with decrease of tumor progression compared to BCG or MMC monotherapy...
May 2018: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29745932/analysis-of-tolerance-and-security-of-chemo-hyperthermia-with-mitomycin-c-for-the-treatment-of-non-muscle-invasive-bladder-cancer
#8
Juan León-Mata, José Luis Domínguez, Joan Palou Redorta, Daniel Sousa González, María Alvarez Casal, Alejandro Sousa Escandón, Eva Piñeiro Vázquez
OBJECTIVES: The treatment of non muscle invasive bladder cancer (NMIBC) continues to be a challenge. Hyperthermia (HT) combined with intravesical chemotherapy is used to enhance the effects of chemotherapy. METHODS: A review of the publications was carried out to synthesize the adverse effects (AE) reported by the use of chemohyperthermia (QHT) with Mitomycin-C (MMC). The most relevant data are exposed for each of the devices currently used in the QHT. RESULTS: SYNERGO®: The dropout rate varied between 3-40%, and the AE rate is up to 88%...
May 2018: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29745931/-mitomycin-c-hivec-update-and-results-in-high-risk-patients
#9
Félix Guerrero-Ramos, Daniel Castellano-Gauna, Esther García-Rojo, José Manuel Duarte-Ojeda, Federico de la Rosa-Kehrmann, Felipe Villacampa-Aubá
Adjuvant endovesical treatment is a research field in constant exploration with the aim to minimize the risk of recurrence and progression of non muscle invasive bladder tumors. Over the last years, the administration of chemotherapy in a chemo hyperthermia regimen has been added to the existing regimens. There are various systems for its administration, but this article focus on HIVEC (Hyperthermic IntraVEsical Chemotherapy) and its current status. In this review article we update the results of this system in the case-scenarios it has been used (preoperative with ablative intention and as adjuvant therapy with prophylactic purposes), tolerance and security issues, on-going clinical trials and future perspectives...
May 2018: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29745929/-chemohyperthermia-using-mmc-in-non-muscle-invasive-bladder-cancer-current-status-and-future-perspectives
#10
Jacqueline J M J H Coenen, F Johannes P van Valenberg, Tom J H Arends, J Alfred Witjes
In an effort to decrease recurrence and progression rates in non-muscle-invasive bladder cancer (NMIBC), transurethral resection of a bladder tumor is followed by intravesical instillations using Mitomycin-C (MMC) and Bacillus Calmette-Guérin (BCG). In spite of these adjuvant treatment modalities, recurrence and progression rates remain high. Because of these limitations of current standard therapy and the shortage of BCG, there is a search for alternative forms of treatment in NMIBC. Intravesical MMC combined with hyperthermia, especially RF-induced QHT being most extensively investigated in the past 20 years, is one of these alternatives for intermediate- and high-risk NMIBC...
May 2018: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29745927/-new-endovesical-chemotherapy-drugs-and-application-vehicles
#11
Emilio Rios González, Luis Martínez-Piñeiro
Urothelial bladder cancer is a very prevalent disease. At the time of diagnosis 70-80% of the cases present as non muscle invasive tumors. These tumors present a high recurrence and progression rates despite intravesical treatment with Bacille Calmette-Guerin and mitomycin C. Moreover, bladder conditions such as its wall impermeability and the fact that intravesical drugs are constantly being diluted by urine and eliminated do not favor the efficacy of intravesical treatment. This review analyzes new intravesical drugs such as gemcitabine or taxanes with promising results as alternative to the usual treatments or after their failure...
May 2018: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29745926/-immediate-post-turbt-mmc-instillation
#12
José Luis Domínguez-Escrig
Mitomycin C is an antitumor alkylating antibiotic agent that inhibits DNA synthesis extensively used as intravesical chemotherapy agent in the adjuvant treatment of urothelial carcinoma. Its clinical efficacy is the context of single early postoperative instillation was demonstrated by Toley et al. in 1988. Since then, multiple clinical trials and 4 metanalyses have endorsed its use with level 1a evidence. The objective of this chapter is to perform a comprehensive updated review on the use of MMC in the context of single early instillation at the time of TURBT, the available clinical evidence, most relevant recommendations in the international clinical guidelines, its complications and potential maneuvers for the optimization of its use...
May 2018: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/29745096/cytoreduction-and-hipec-for-peritoneal-carcinomatosis-of-pancreatic-cancer
#13
Antonios-Apostolos Tentes, Nicolaos Pallas, Christina Karamveri, Dimitrios Kyziridis, Christos Hristakis
PURPOSE: Peritoneal carcinomatosis of pancreatic cancer is generally considered for palliative treatment. The purpose of this study was to report the outcome of cytoreductive surgery and hyperthermic intraoperative intraperitoneal chemotherapy (HIPEC) in patients with pancreatic cancer and peritoneal carcinomatosis. METHODS: Patients with documented resectable peritoneal carcinomatosis of pancreatic cancer underwent cytoreductive surgery in combination with HIPEC from 2008-2016 by the same surgical team...
March 2018: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29733076/age-does-not-matter-the-relevance-of-immediate-instillation-therapy-with-mitomycin-c-in-non-muscle-invasive-bladder-cancer
#14
EDITORIAL
Frank Christoph, Martin Schostak
No abstract text is available yet for this article.
April 2018: Translational Andrology and Urology
https://www.readbyqxmd.com/read/29730950/emerging-intravesical-drugs-for-the-treatment-of-non-muscle-invasive-bladder-cancer
#15
Jasper Crijnen, Theo M de Reijke
Bladder cancer (BC) is a severe health burden: it is the fifth most common malignancy in the world and has high recurrence and progression rates. Standard treatment starts with TURB followed by intravesical chemotherapy with Mitomycin C or immunotherapy with BCG. However, successful management still remains a challenge, because approximately 30% of patients have recurrence or progression within 5 years, and treatment has considerable side effects. Anticipating on the upcoming BCG shortage emphasizes, moreover, the necessity to develop and study novel treatments...
May 5, 2018: Expert Opinion on Emerging Drugs
https://www.readbyqxmd.com/read/29722659/tolerability-of-adxs11-001-lm-llo-listeria-based-immunotherapy-with-mitomycin-fluorouracil-and-radiation-for-anal-cancer
#16
Howard Safran, Kara-Lynne Leonard, Kimberly Perez, Matthew Vrees, Adam Klipfel, Steven Schechter, Nicklas Oldenburg, Leslie Roth, Nishit Shah, Kayla Rosati, Lakshmi Rajdev, Kalyan Mantripragada, Iris Y Sheng, Peter Barth, Thomas A DiPetrillo
PURPOSE: To obtain safety and preliminary efficacy data of the combination of ADXS11-001, live attenuated Listeria monocytogenes bacterium, with mitomycin, 5-fluorouracil (5-FU), and intensity modulated radiation therapy in locally advanced anal cancer. PATIENTS AND METHODS: Eligibility included patients with previously untreated, nonmetastatic anal cancer with a primary tumor >4 cm or node-positive disease. Patients received 2 cycles of mitomycin and 5-FU concurrent with 54...
April 1, 2018: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/29720197/the-prognostic-role-of-hemoglobin-levels-in-patients-undergoing-concurrent-chemo-radiation-for-anal-cancer
#17
Pierfrancesco Franco, Francesco Montagnani, Francesca Arcadipane, Chiara Casadei, Kalliopi Andrikou, Stefania Martini, Giuseppe Carlo Iorio, Mario Scartozzi, Massimiliano Mistrangelo, Lorenzo Fornaro, Paola Cassoni, Stefano Cascinu, Umberto Ricardi, Andrea Casadei Gardini
BACKGROUND: Concurrent chemo-radiation (CT-RT) is a standard therapy for squamous cell carcinoma of anal canal. Different clinical and biological factors may potentially affect outcome. We investigated the prognostic role of baseline hemoglobin (Hb) in a cohort of anal cancer patients submitted to CT-RT with 5-fluorouracil and mitomycin C. METHODS: Up to 161 patients with clinical stage T1-T4/N0-N3/M0 were treated. Response was assessed at 6 weeks and thereafter at 3, 6 and 12 months...
May 2, 2018: Radiation Oncology
https://www.readbyqxmd.com/read/29719651/combined-tenonplasty-and-scleral-graft-for-refractory-pseudomonas-scleritis-following-pterygium-removal-with-mitomycin-c-application
#18
Heidar Siatiri, Nima Mirzaee-Rad, Shruti Aggarwal, Ahmad Kheirkhah
Purpose: To report a surgical approach combining scleral patch graft and tenonplasty for successful management of refractory Pseudomonas scleritis following pterygium removal with mitomycin C application. Case Report: A 75-year-old diabetic woman with a history of prior pterygium excision and mitomycin C application developed infectious necrotizing scleritis caused by Pseudomonas aeruginosa . Owing to progression of scleritis despite medical management, the patient underwent surgery...
April 2018: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/29719599/fanconi-anemia-and-homologous-recombination-gene-variants-are-associated-with-functional-dna-repair-defects-in-vitro-and-poor-outcome-in-patients-with-advanced-head-and-neck-squamous-cell-carcinoma
#19
Caroline V M Verhagen, David M Vossen, Kerstin Borgmann, Floor Hageman, Reidar Grénman, Manon Verwijs-Janssen, Lisanne Mout, Roel J C Kluin, Marja Nieuwland, Tesa M Severson, Arno Velds, Ron Kerkhoven, Mark J O'Connor, Martijn van der Heijden, Marie-Louise van Velthuysen, Marcel Verheij, Volkert B Wreesmann, Lodewyk F A Wessels, Michiel W M van den Brekel, Conchita Vens
Mutations in Fanconi Anemia or Homologous Recombination (FA/HR) genes can cause DNA repair defects and could therefore impact cancer treatment response and patient outcome. Their functional impact and clinical relevance in head and neck squamous cell carcinoma (HNSCC) is unknown. We therefore questioned whether functional FA/HR defects occurred in HNSCC and whether they are associated with FA/HR variants. We assayed a panel of 29 patient-derived HNSCC cell lines and found that a considerable fraction is hypersensitive to the crosslinker Mitomycin C and PARP inhibitors, a functional measure of FA/HR defects...
April 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29712985/identification-and-pathogenomic-analysis-of-an-escherichia-coli-strain-producing-a-novel-shiga-toxin-2-subtype
#20
Xiangning Bai, Shanshan Fu, Ji Zhang, Ruyue Fan, Yanmei Xu, Hui Sun, Xiaohua He, Jianguo Xu, Yanwen Xiong
Shiga toxin (Stx) is the key virulent factor in Shiga toxin-producing Escherichia coli (STEC). To date, three Stx1 subtypes and seven Stx2 subtypes have been described in E. coli, which differed in receptor preference and toxin potency. Here, we identified a novel Stx2 subtype designated Stx2h in E. coli strains isolated from wild marmots in the Qinghai-Tibetan plateau, China. Stx2h shares 91.9% nucleic acid sequence identity and 92.9% amino acid identity to the nearest Stx2 subtype. The expression of Stx2h in type strain STEC299 was inducible by mitomycin C, and culture supernatant from STEC299 was cytotoxic to Vero cells...
April 30, 2018: Scientific Reports
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