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https://www.readbyqxmd.com/read/28637194/high-iron-supply-inhibits-the-synthesis-of-the-genotoxin-colibactin-by-pathogenic-escherichia-coli-through-a-non-canonical-fur-ryhb-mediated-pathway
#1
Sophie Tronnet, Christophe Garcie, Alexander O Brachmann, Jörn Piel, Eric Oswald, Patricia Martin
The genotoxin colibactin is a secondary metabolite produced by a variety of pathogenic Enterobacteria, and is associated with colon cancer development and acute systemic infections. The colibactin biosynthesis requires the enzymatic activity of the phosphopantetheinyl transferase ClbA. We recently evidenced that two master regulators of bacterial iron homeostasis, i.e. the ferric uptake regulator (Fur) and the small regulatory non-coding RNA RyhB, were involved in the regulation of the clbA transcription and of the colibactin production...
June 20, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28637024/tumor-location-impacts-immune-response-in-mouse-models-of-colon-cancer
#2
Xianda Zhao, Lihua Li, Timothy K Starr, Subbaya Subramanian
Existing preclinical models of human colorectal cancer (CRC) that rely on syngeneic subcutaneous grafts are problematic, because of increasing evidence that the immune microenvironment in subcutaneous tissue is significantly different from the gastrointestinal tract. Similarly, existing orthotopic models that use a laparotomy for establishing grafts are also problematic, because the surgical procedure results in extensive inflammation, thereby creating a nonphysiologic tumor microenvironment. To facilitate the bench-to-bedside translation of CRC immunotherapy strategies, we developed a novel orthotopic model in mice that uses endoscopy-guided microinjection of syngeneic cancer cells...
June 9, 2017: Oncotarget
https://www.readbyqxmd.com/read/28637010/local-application-of-bacteria-improves-safety-of-salmonella-mediated-tumor-therapy-and-retains-advantages-of-systemic-infection
#3
Dino Kocijancic, Sebastian Felgner, Tim Schauer, Michael Frahm, Ulrike Heise, Kurt Zimmermann, Marc Erhardt, Siegfried Weiss
Cancer is a devastating disease and a large socio-economic burden. Novel therapeutic solutions are on the rise, although a cure remains elusive. Application of microorganisms represents an ancient therapeutic strategy, lately revoked and refined via simultaneous attenuation and amelioration of pathogenic properties. Salmonella Typhimurium has prevailed in preclinical development. Yet, using virulent strains for systemic treatment might cause severe side effects. In the present study, we highlight a modified strain based on Salmonella Typhimurium UK-1 expressing hexa-acylated Lipid A...
June 7, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636540/implementation-and-utilization-of-the-molecular-tumor-board-to-guide-precision-medicine
#4
REVIEW
Shuko Harada, Rebecca Arend, Qian Dai, Jessica A Levesque, Thomas S Winokur, Rongjun Guo, Martin J Heslin, Lisle Nabell, L Burt Nabors, Nita A Limdi, Kevin A Roth, Edward E Partridge, Gene P Siegal, Eddy S Yang
BACKGROUND: With rapid advances in genomic medicine, the complexity of delivering precision medicine to oncology patients across a university health system demanded the creation of a Molecular Tumor Board (MTB) for patient selection and assessment of treatment options. The objective of this report is to analyze our progress to date and discuss the importance of the MTB in the implementation of personalized medicine. MATERIALS AND METHODS: Patients were reviewed in the MTB for appropriateness for comprehensive next generation sequencing (NGS) cancer gene set testing based on set criteria that were in place...
June 14, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636539/chromatin-remodeling-protein-morc2-promotes-breast-cancer-invasion-and-metastasis-through-a-prd-domain-mediated-interaction-with-ctnnd1
#5
Xiao-Hong Liao, Ye Zhang, Wen-Jie Dong, Zhi-Min Shao, Da-Qiang Li
MORC family CW-type zinc finger 2 (MORC2) is a newly identified chromatin remodeling protein with emerging roles in the regulation of DNA damage response and gene transcription, but its mechanistic role in breast cancer development and progression remains unexplored. Here, we show that MORC2 promoted breast cancer invasion and metastasis and these effects depended on a proline-rich domain (PRD) within its carboxy-terminal region spanning residues 601-734. Induced expression of wild-type MORC2 did not significantly affect cell proliferation and cell-cycle progression, but promoted breast cancer cell migration and invasion in vitro and metastatic lung colonization in vivo...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28635645/cembrene-diterpenoids-with-ether-linkages-from-sarcophyton-ehrenbergi-an-anti-proliferation-and-molecular-docking-assessment
#6
Mohamed-Elamir F Hegazy, Abdelsamed I Elshamy, Tarik A Mohamed, Ahmed R Hamed, Mahmoud A A Ibrahim, Shinji Ohta, Paul W Paré
Three new cembrene diterpenoids, sarcoehrenbergilid A-C (1-3), along with four known diterpenoids, sarcophine (4), (+)-7α,8β-dihydroxydeepoxysarcophine (5), sinulolide A (6), and sinulolide B (7), and one steroid, sardisterol (8), were isolated and characterized from a solvent extract of the Red Sea soft coral Sarcophyton ehrenbergi. Chemical structures were elucidated by NMR and MS analyses with absolute stereochemistry determined by X-ray analysis. Since these isolated cembrene diterpenes contained 10 or more carbons in a large flexible ring, conformer stabilities were examined based on density functional theory calculations...
June 21, 2017: Marine Drugs
https://www.readbyqxmd.com/read/28635173/laparoscopic-surgery-for-sigmoid-colon-cancer-after-multiple-operations-including-urinary-diversion-with-indiana-pouch-a-case-report
#7
Kazuya Iwamoto, Hidekazu Takahashi, Naotsugu Haraguchi, Junichi Nishimura, Taishi Hata, Chu Matsuda, Hirofumi Yamamoto, Tsunekazu Mizushima, Yuichiro Doki, Masaki Mori
A 73-year-old man with lower abdominal pain was diagnosed at our hospital with sigmoid colon cancer. He had previously undergone radical cystectomy with Indiana pouch construction and gastrectomy to treat bladder cancer and gastric cancer, respectively. We performed a laparoscopic Hartmann's operation with Japanese D3 lymph node dissection. We observed severe adhesion in the abdominal cavity; adhesions between the urostomy and sigmoid colon were particularly severe. The tumor had invaded to the distal rectum, which had adhered to the pubic bone and the previously reconstructed urinary pouch...
June 21, 2017: Asian Journal of Endoscopic Surgery
https://www.readbyqxmd.com/read/28634730/phase-iii-trial-comparing-uft%C3%A2-%C3%A2-psk-to-uft%C3%A2-%C3%A2-lv-in-stage-iib-iii-colorectal-cancer-mcsgo-cctg
#8
Yasuhiro Miyake, Junichi Nishimura, Takeshi Kato, Masataka Ikeda, Masaki Tsujie, Taishi Hata, Ichiro Takemasa, Tsunekazu Mizushima, Hirofumi Yamamoto, Mitsugu Sekimoto, Riichiro Nezu, Yuichiro Doki, Masaki Mori
PURPOSE: Oral adjuvant uracil and tegafur plus leucovorin (UFT/LV) is not inferior to standard weekly fluorouracil and folinate for stage II/III colon cancer. However, protein-bound polysaccharide K (PSK) has been evaluated as postoperative adjuvant therapy for colorectal cancer. This report is the first of MCSGO-CCTG, which compared UFT/LV to UFT/PSK as adjuvant chemotherapy for stage IIB or III colorectal cancer in patients who had undergone Japanese D2/D3 lymph node dissection. METHODS: The primary endpoint was the 3-year disease-free survival (DFS)...
June 20, 2017: Surgery Today
https://www.readbyqxmd.com/read/28634703/isoperistaltic-versus-antiperistaltic-side-to-side-anastomosis-after-right-laparoscopic-hemicolectomy-for-cancer-isovanti-trial-study-protocol-for-a-randomised-clinical-trial
#9
N Ibañez, J Abrisqueta, J Luján, Q Hernández, P Parrilla
BACKGROUND: It is believed that loosing ileocecal valve is well tolerated in patients who do not have short bowel syndrome or Crohn disease. From the hypothesis of colonic peristalsis and transit is regulated by that ileocecal valvular mechanism, we try to find out if the creation of a new pseudo-valvular mechanism as antiperistaltic anastomosis could be considered after right hemicolectomy can cause any short- or long-term changes in gastrointestinal habits. PURPOSE: The purpose of the study at primary endpoint is to compare early (occurring within 30 days of surgery) and late (occurring during the follow-up) postoperative complications between both groups The purpose of the study at secondary endpoint is to compare intraoperative and postoperative events between experimental and control groups in terms of operating time, first oral tolerance day, first flatus and faeces, length of hospital stay and orocecal transit; comparing rates of gastrointestinal life quality and comparing mortality rates between both groups...
June 21, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28634627/influence-of-multiple-stapler-firings-used-for-rectal-division-on-colorectal-anastomotic-leak-rate
#10
Tamara Braunschmid, Nikolaus Hartig, Lukas Baumann, Bernhard Dauser, Friedrich Herbst
BACKGROUND: Anastomotic leakage following colorectal resection remains one of the most significant complications with relevant morbidity and mortality. There is evidence that a higher number of stapler firings for rectal division can affect the leak rate in double stapling anastomosis. However, there are no data concerning compression anastomosis. We present our institutional experience addressing this issue. DESIGN: This is a retrospective review of a prospective institutional database of patients undergoing colonic and rectal resection for benign and malignant indications between January 2008 and December 2014 at the surgical department of the St...
June 20, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28634392/the-traditional-chinese-medicine-achyranthes-bidentata-and-our-de-novo-conception-of-its-metastatic-chemoprevention-from-phytochemistry-to-pharmacology
#11
Zhou Jiang, Jun Qian, Haiyan Dong, Jingyi Yang, Xiaobo Yu, Jianzhong Chen, Hongning Chen, Qing Shi, Lee Jia
Our recent biosystems analysis revealed similarities between embryonic implantation and cancer cell adhesion, which suggests that abortifacients may be good for safe and effective metastatic chemoprevention targeting circulating tumor cells (CTC). Here we test the hypothesis by using the well-known abortion herb Achyranthes bidentata Blume (A. bidentata). Five compounds were separated from the herb root. Among them, ginsenoside Ro was the most potent in inhibiting embryonic implantation within non-cytotoxic concentrations...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28632726/infradiaphragmatic-irradiation-and-high-procarbazine-doses-increase-colorectal-cancer-risk-in-hodgkin-lymphoma-survivors
#12
Anna M van Eggermond, Michael Schaapveld, Cécile Pm Janus, Jan Paul de Boer, Augustinus Dg Krol, Josée M Zijlstra, Richard Wm van der Maazen, Leontien C Kremer, Monique E van Leerdam, Marieke Wj Louwman, Otto Visser, Marie L De Bruin, Berthe Mp Aleman, Flora E van Leeuwen
BACKGROUND: Hodgkin lymphoma (HL) survivors are at increased risk of second malignancies, but few studies have assessed colorectal cancer (CRC) risk after HL treatment. We assessed long-term, subsite-specific CRC risk associated with specific radiation fields and chemotherapy regimens. METHODS: In a Dutch cohort of 3121 5-year HL survivors treated between 1965 and 1995, subsite-specific CRC incidence was compared with general population rates. Treatment effects were quantified by Cox regression analyses...
June 20, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28632689/18f-fdg-uptake-in-ischemic-colitis-during-follow-up-of-a-patient-with-lung-cancer
#13
Sofia C Vaz, Carla Oliveira, Joana C Castanheira, Ângelo F Silva, Durval C Costa
A 61-year-old man with previous history of lung adenocarcinoma underwent 2 F-FDG PET/CT investigations. The first for assessment of enlarged mediastinal lymph nodes revealed an area of increased FDG uptake in the sigmoid colon (located at the right pelvis). Colonoscopy showed a segmental area of ischemic sigmoid colitis, confirmed on histology postbiopsy. The asymptomatic man had no risk factors, and no specific treatment was administered, apart from supportive measures. One year later, there was no significantly abnormal uptake on PET/CT...
June 19, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28632315/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-follow-up-lifestyle-and-survivorship
#14
Kai Leong, John Hartley, Sharad Karandikar
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28632314/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-introduction
#15
Brendan Moran, Sharad Karandikar, Ian Geh
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28632313/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-audit-and-outcome-reporting
#16
Omar Faiz
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28632312/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-diagnosis-investigations-and-screening
#17
Chris Cunningham, Kai Leong, Susan Clark, Andrew Plumb, Stuart Taylor, Ian Geh, Sharad Karandikar, Brendan Moran
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28632310/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-pathology-standards-and-datasets
#18
Gerald Langman, Maurice Loughrey, Neil Shepherd, Philip Quirke
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28632309/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-surgical-management
#19
Brendan Moran, Chris Cunningham, Talvinder Singh, Peter Sagar, Jay Bradbury, Ian Geh, Sharad Karandikar
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28632308/association-of-coloproctology-of-great-britain-ireland-acpgbi-guidelines-for-the-management-of-cancer-of-the-colon-rectum-and-anus-2017-anal-cancer
#20
Ian Geh, Simon Gollins, Andrew Renehan, John Scholefield, Vicky Goh, Davide Prezzi, Brendan Moran, Mark Bower, Maryam Alfa-Wali, Richard Adams
No abstract text is available yet for this article.
July 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
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