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https://www.readbyqxmd.com/read/29166513/primary-cutaneous-amelanotic-melanoma-and-gastrointestinal-stromal-tumor-in-synchronous-evolution
#1
Fernanda Teixeira Ortega, Rogério Nabor Kondo, Francine Milenkovich Belinetti, Mariana Onuki Okamura, Bruna Tuma
Gastrointestinal stromal tumor is rare digestive tract mesenchymal tumor, most often in the wall of the stomach. It is a benign neoplasm, but it can become malignant if not treated. We report a case of gastrointestinal stromal tumor that was discovered after abdominal ultrasonography during staging of a patient with primary cutaneous amelanotic melanoma. Mutation in the tyrosine kinase receptor could explain the development of two types of tumors in the same patient.
September 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29166334/gastrointestinal-stromal-tumor-of-the-prostate-staging-and-evaluation-of-response-to-therapy-with-18f-fdg-pet-ct
#2
Yazan Z Alabed
A 49-year-old man presented for routine general physical examination was found with an enlarged prostate gland without associated symptoms. Ultrasound followed by computed tomography (CT) of abdomen and pelvis confirmed a markedly enlarged heterogeneous prostate gland. Subsequently, a staging flourine-18 fluorodeoxyglucose (F-FDG) positron emission tomography (PET/CT) scan revealed intensely FDG-avid mass involving the prostate, which was biopsied as gastrointestinal stromal tumor (GIST). The patient was treated with imatinib and a follow-up PET/CT scan showed complete metabolic response...
November 22, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29166327/68ga-prostate-specific-membrane-antigen-uptake-in-gastrointestinal-stromal-tumor
#3
Tom Laurens, Fred Witjes, Marcel Janssen, Uta Flucke, Martin Gottardt
A 62-year-old man with recently diagnosed prostatic adenocarcinoma was referred for a whole-body Ga-prostate-specific membrane antigen (PSMA) PET/CT scan for staging. Although the scan did not reveal metastatic disease, it did reveal a PSMA-avid lesion in the upper abdomen located between the liver and the stomach. Histopathologic examination demonstrated a gastrointestinal stromal tumor. The lesion demonstrated increased uptake in the margins of the tumor with a central photopenic area, which we consider to be the typical pattern on PSMA images of a gastrointestinal stromal tumor, based on theoretical PSMA distribution in such a tumor and other reported cases...
November 22, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29164578/mir-590-3p-promotes-colon-cancer-cell-proliferation-via-wnt-%C3%AE-catenin-signaling-pathway-by-inhibiting-wif1-and-dkk1
#4
Z-Y Feng, X-H Xu, D-Z Cen, C-Y Luo, S-B Wu
OBJECTIVE: Colon cancer is one of the most common and deadly types of gastrointestinal tumor. Despite progressive treatments, the patient prognosis has not been improved effectively. MATERIALS AND METHODS: Expression of miRNA and mRNA were tested by Realtime PCR. Cell cycle was detected by flow cytometry. Cell viability was evaluated by MTT assay. Cell spheroid formation was determined by colony assay. Wnt signaling pathway activity was evaluated by TOP/FOP ratio...
November 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29163522/the-vagus-nerve-in-the-neuro-immune-axis-implications-in-the-pathology-of-the-gastrointestinal-tract
#5
REVIEW
Bruno Bonaz, Valérie Sinniger, Sonia Pellissier
The vagus nerve (VN) is the longest nerve of the organism and a major component of the parasympathetic nervous system which constitutes the autonomic nervous system (ANS), with the sympathetic nervous system. There is classically an equilibrium between the sympathetic and parasympathetic nervous systems which is responsible for the maintenance of homeostasis. An imbalance of the ANS is observed in various pathologic conditions. The VN, a mixed nerve with 4/5 afferent and 1/5 efferent fibers, is a key component of the neuro-immune and brain-gut axes through a bidirectional communication between the brain and the gastrointestinal (GI) tract...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29162563/foxf1-defines-the-core-regulatory-circuitry-in-gastrointestinal-stromal-tumor-gist
#6
Leili Ran, Yuedan Chen, Jessica Sher, Wai Pung E Wong, Devan Murphy, Jenny Q Zhang, Dan Li, Kemal Deniz, Inna Sirota, Zhen Cao, Shangqian Wang, Youxin Guan, Shipra Shukla, Katie Yang Li, Alan Chramiec, Yuanyuan Xie, Deyou Zheng, Richard P Koche, Cristina R Antonescu, Yu Chen, Ping Chi
The cellular context that integrates upstream signaling and downstream nuclear response dictates the oncogenic behaviour and shapes treatment responses in distinct cancer types. Here, we uncover that in GIST, the forkhead family member, FOXF1, directly controls the transcription of two master regulators, KIT and ETV1, both required for GIST precursor-interstitial cells of Cajal (ICC) lineage-specification and GIST tumorigenesis. Further, FOXF1 co-localizes with ETV1 at enhancers and functions as a pioneer factor that regulates the ETV1-dependent GIST-lineage specific transcriptome through modulation of the local chromatin context, including chromatin accessibility, enhancer maintenance and ETV1 binding...
November 21, 2017: Cancer Discovery
https://www.readbyqxmd.com/read/29158936/smarca4-deficient-carcinoma-of-unknown-primary-presenting-with-fatal-paraneoplastic-hypercalcemia-in-a-heart-transplant-recipient-first-report-in-a-male-patient
#7
Abbas Agaimy, Deike Strobel, Thomas Strecker
Small cell carcinoma of the ovary, hypercalcemic type (SCCOHT), is a rare SMARCA4-driven aggressive malignancy of young age characteristically associated with paraneoplastic hypercalcemia. Comparable neoplasms/presentations have not been reported in males. A 39-year-old male heart transplant recipient (HTX 40 months previously) presented with multiple liver nodules and hypercalcemic crisis. The serum parathyroid hormone-related protein (PTHrp) was significantly elevated (241 pg/ml; reference value < 57)...
2017: Case Reports in Pathology
https://www.readbyqxmd.com/read/29156761/extracts-from-hericium-erinaceus-relieve-inflammatory-bowel-disease-by-regulating-immunity-and-gut-microbiota
#8
Chen Diling, Yang Xin, Zheng Chaoqun, Yang Jian, Tang Xiaocui, Chen Jun, Shuai Ou, Xie Yizhen
Hericium erinaceus (HE), a traditional edible mushroom, is known as a medicine food homology to ameliorate gastrointestinal diseases. To investigate whether HE is clinically effective in alleviating inflammatory bowel disease (IBD), HE extracts (polysaccharide, alcoholic extracts and whole extracts were prepared using solvent extraction methods) were administrated for 2 weeks in rats with IBD induced by trinitro-benzene-sulfonic acid (TNBS) enema (150 mg/kg). Significant clinical and histological changes in IBD rats were identified, including damage activity, common morphous and tissue damage index scores in colonic mucosa and myeloperoxidase (MPO) activity...
October 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29155512/efficacy-and-safety-of-cetuximab-plus-folfox-in-second-line-and-third-line-therapy-in-metastatic-colorectal-cancer
#9
Ersin Ozaslan, Ulas Serkan Topaloglu, Mevlude Inanc, Umut Gokmen Erdem, Hacer Demir, Erkan Arpaci, Mehmet Metin Seker, Mustafa Karaagac, Melih Kiziltepe, Baki Eker, Metin Ozkan
PURPOSE: To evaluate the efficacy and adverse events with cetuximab plus FOLFOX administered as second- and third-line therapy in metastatic colorectal cancer (mCRC) patients. METHODS: IPatients were administered cetuximab plus FOLFOX as second- and third-line therapy from January 2010 through October 2015. mCRC patients with wild type KRAS were alsï given irinïtecan and/ïr ïxaliplatin cïmbined with fluorïpyrimidine±bevacizumab. Tumor respïnse and survival were evaluated using RECIST and Kaplan-Meier methïd respectively...
July 2017: Journal of B.U.ON.: Official Journal of the Balkan Union of Oncology
https://www.readbyqxmd.com/read/29154839/participation-of-the-anti-inflammatory-and-antioxidative-activity-of-docosahexaenoic-acid-on-indomethacin-induced-gastric-injury-model
#10
Elizabeth Arlen Pineda-Peña, Yoalli Martínez-Pérez, Marina Galicia-Moreno, Araceli Navarrete, José Segovia, Pablo Muriel, Liliana Favari, Gilberto Castañeda-Hernández, Aracely Evangelina Chávez-Piña
Adverse gastrointestinal (GI) effects caused by nonsteroidal anti-inflammatory drugs (NSAIDs), including indomethacin, are recognized as the major limitation to their clinical use. NSAID-induced gastric damage is generated by cyclooxygenase inhibition, activation of inflammatory processes, and oxidative stress. Docosahexaenoic acid (DHA), an omega-3 polyunsaturated fatty acid, has shown gastroprotective effects; however, the molecular mechanisms underlying these effects have not been fully explained. As a result, the aim of this study was to examine DHA's anti-inflammatory and antioxidative actions in a mouse model of indomethacin-induced gastric injury...
November 14, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29152299/gastrointestinal-stromal-tumor-an-incidental-finding-during-laparoscopic-bariatric-surgery
#11
Shireesh Saurabh
Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor of the gastrointestinal tract. Lack of clinical symptoms and findings on preoperative upper endoscopy makes its diagnosis difficult in bariatric patients. A laparoscopic resection of the gastric GIST during bariatric surgery is associated with good long-term prognosis.
November 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29152141/notch1-ablation-radiosensitizes-glioblastoma-cells
#12
Na Han, Guangyuan Hu, Lei Shi, Guoxian Long, Lin Yang, Qingsong Xi, Qiuyun Guo, Jianhua Wang, Zhen Dong, Mengxian Zhang
Broad specific Notch1 inhibitors suppress glioblastoma multiforme (GBM) growth but have significant gastrointestinal toxicities. Here, we examined Notch1 expression in GBM tissue specimens and its correlation with the overall survival (OS) of GBM patients. Furthermore, using the CRISPR/Cas9 system, we investigated the effects of Notch1 downregulation on clonogenic growth and angiogenesis of GBM cells and xenografts. Immunohistochemistry showed positive Notch1 expression in 71% (49/69) of GBM tissues. Our multivariate Cox regression analysis further revealed that Notch1 expression was an independent adverse prognostic factor for OS...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29151957/curcumin-enhances-the-anticancer-effect-of-5-fluorouracil-against-gastric-cancer-through-down-regulation-of-cox-2-and-nf-%C3%AE%C2%BAb-signaling-pathways
#13
Hongru Yang, Shaoqiu Huang, Yumeng Wei, Shousong Cao, Chao Pi, Ting Feng, Jing Liang, Ling Zhao, Guosheng Ren
Background: 5-fluorouracil (5-FU) is one of the most commonly used first-line anticancer drugs to treat gastric cancer in clinical practice. However, severe adverse events such as gastrointestinal toxicity and bone marrow suppression limit its clinical application. Combination chemotherapy to combine two or more anticancer drugs with different mechanistic action is an effective anticancer strategy against gastric cancer. Therefore, we studied the anticancer effect of the combination of 5-FU with curcumin against gastric cancer MKN45 and AGS cells (normal gastric mucosal GES-1 cells as control) and associated molecular mechanisms...
2017: Journal of Cancer
https://www.readbyqxmd.com/read/29151288/-the-value-of-18-f-fdg-pet-ct-imaging-in-predicting-the-malignant-potential-of-gist
#14
S X Li, M D Tang, D Y Lin, D J Liu, Q H Lyu, J P Zhang, Z H Cai
Objective: To evaluate the value of (18)F-FDG PET-CT in predicting the malignant potential of Gastrointestinal Stromal Tumors (GIST). Methods: The clinical and pathological features of 31 patients with GIST confirmed by surgery or biopsy were retrospectively analyzed. The malignant potential of GIST before treatment was assessed by (18)F-FDG PET-CT. The GIST risk classification was graded according to the Standard revised by the National Institutes of Health (NIH) in 2008. The relationship between the maximal standard uptake value (SUVmax) and GIST risk classification, tumor diameter, Ki-67 index, and mitotic count were analyzed respectively...
November 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/29149908/exosomal-micrornas-as-potential-circulating-biomarkers-in-gastrointestinal-tract-cancers-a-systematic-review-protocol
#15
Elmira Gheytanchi, Zahra Madjd, Leila Janani, Arezoo Rasti, Roya Ghods, Fatemeh Atyabi, Mohammad Hossein Asadi Lari, Sadegh Babashah
BACKGROUND: Metastasis is the most frequent type of recurrence in gastrointestinal (GI) cancers, and there is an emerging potential for new diagnostic and therapeutic approaches, especially in the cases of metastatic GI carcinomas. The expression profiles of circulating exosomal microRNAs are of particular interest as novel non-invasive diagnostic and prognostic biomarkers for improved detection of GI cancers in body fluids, especially in the serum of patients with recurrent cancers. The aim of this study is to systematically review primary studies and identify the miRNA profiles of serum exosomes of GI cancers...
November 17, 2017: Systematic Reviews
https://www.readbyqxmd.com/read/29145240/gastrointestinal-stromal-tumor-gist-with-liver-metastases-an-18-year-experience-from-the-gist-cooperation-group-in-north-china
#16
Yi-Nan Shi, Yong Li, Li-Ping Wang, Zhen-Hua Wang, Xiao-Bo Liang, Han Liang, Li Zhang, Bin Li, Li-Qiao Fan, Qun Zhao, Zhi-Xue Ma, Xue-Feng Zhao, Zhi-Dong Zhang, Yu Liu, Bi-Bo Tan, Dong Wang, Li-Li Wang, Ying-Jie Hao, Nan Jia
Approximately 40% to 50% of gastrointestinal stromal tumor (GIST) patients will have recurrence or metastases after resection of the primary lesion, and the most common affected sites will be liver and peritoneum. Imatinib has been considered as the first-line therapy of metastatic GIST. Surgery for metastases is proposed when possible. Furthermore, there are controversies concerning hepatic resection and systemic tyrosin kinase inhibitors (TKIs). The therapeutic conditions and long-term outcome of GIST patients with liver metastases in northern China remain unknown...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29143894/mechanism-of-resistance-in-gastrointestinal-stromal-tumors
#17
E Tamborini
Imatinib has revolutionized the treatment of GIST since this drug is able to inhibit tumoral growth by blocking the activity of receptor tyrosine kinases, KIT or PDGFRA, that in these tumors are constitutively activated because of the presence of mutations that alters their catalytic activity. However, despite this enormous improvement in the RFS and OS and in the quality of life of GIST patients, imatinib is not able to eradicate the disease: recurrences occur and acquired resistance is a common event which develops during targeted treatments...
November 17, 2017: Handbook of Experimental Pharmacology
https://www.readbyqxmd.com/read/29143892/update-in-the-therapy-of-advanced-neuroendocrine-tumors
#18
REVIEW
Inbal Uri, Shani Avniel-Polak, David J Gross, Simona Grozinsky-Glasberg
Neuroendocrine tumors (NETs) are rare neoplasms, with an estimated annual incidence of ~ 6.9/100,000. NETs arise throughout the body from cells of the diffuse endocrine system. More than half originate from endocrine cells of the gastrointestinal tract and the pancreas, thus being referred to as gastroenteropancreatic NETs (GEP-NETs). The only treatment that offers a cure is surgery; however, most patients are diagnosed with metastatic disease, and curative surgery is usually not an option. These patients can be offered long-term systemic treatment, for both symptomatic relief and tumor growth suppression...
November 16, 2017: Current Treatment Options in Oncology
https://www.readbyqxmd.com/read/29142626/resection-and-observation-for-brain-metastasis-without-prompt-postoperative-radiation-therapy
#19
Tae-Wook Song, In-Young Kim, Shin Jung, Tae-Young Jung, Kyung-Sub Moon, Woo-Youl Jang
Objective: Total resection without consecutive postoperative whole brain radiation therapy is indicated for patients with a single or two sites of brain metastasis, with close follow-up by serial magnetic resonance imaging (MRI). In this study, we explored the effectiveness, usefulness, and safety of this follow-up regimen. Methods: From January 2006 to December 2015, a total of 109 patients (76 males, 33 females) underwent tumor resection as the first treatment for brain metastases (97 patients with single metastases, 12 with two metastases)...
November 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/29142595/current-status-of-submucosal-tunneling-endoscopic-resection-for-gastrointestinal-submucosal-tumors-originating-from-the-muscularis-propria-layer
#20
Yuyong Tan, Jirong Huo, Deliang Liu
Gastrointestinal submucosal tumors (SMTs) have been increasingly identified via the use of endoscopic ultrasonography, and removal is often recommended for SMTs that are >2 cm in diameter or symptomatic. Submucosal tunneling endoscopic resection (STER), also known as submucosal endoscopic tumor resection, endoscopic submucosal tunnel dissection or tunneling endoscopic muscularis dissection, is a novel endoscopic technique for treating gastrointestinal SMTs originating from the muscularis propria layer, and has been demonstrated to be effective in the removal of SMTs with a decreased rate of recurrence by clinical studies...
November 2017: Oncology Letters
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