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https://www.readbyqxmd.com/read/28642785/potassium-starvation-limits-soybean-growth-more-than-the-photosynthetic-processes-across-co2-levels
#1
Shardendu K Singh, Vangimalla R Reddy
Elevated carbon dioxide (eCO2) often enhances plant photosynthesis, growth, and productivity. However, under nutrient-limited conditions the beneficial effects of high CO2 are often diminished. To evaluate the combined effects of potassium (K) deficiency and eCO2 on soybean photosynthesis, growth, biomass partitioning, and yields, plants were grown under controlled environment conditions with an adequate (control, 5.0 mM) and two deficient (0.50 and 0.02 mM) levels of K under ambient CO2 (aCO2; 400 μmol mol(-1)) and eCO2 (800 μmol mol(-1))...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28638801/pancreatic-neuroendocrine-tumor-grade-1-patients-followed-up-without-surgery-case-series
#2
Mitsuru Sugimoto, Tadayuki Takagi, Rei Suzuki, Naoki Konno, Hiroyuki Asama, Ko Watanabe, Jun Nakamura, Hitomi Kikuchi, Yuichi Waragai, Mika Takasumi, Satoshi Kawana, Yuko Hashimoto, Takuto Hikichi, Hiromasa Ohira
Among the three grades of neuroendocrine tumors (NETs), the prognosis for Grade 1 (G1) with surgery is very good. Therefore, we evaluated the prognoses of pancreatic NET (PNET) G1 patients without surgery. A total of 8 patients who were diagnosed with NET G1, with an observation period of more than 6 mo until surgery or without surgery, were recruited. The patients who underwent surgery were ultimately diagnosed using specimens obtained during the surgery, whereas the patients who did not undergo surgery were diagnosed using specimens obtained by endoscopic ultrasonography-guided fine needle aspiration...
June 10, 2017: World Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28631646/primitive-neuroectodermal-tumor-presenting-as-a-presacral-mass-a-rare-case-report-with-review-of-literature
#3
Pradnya S Bhadarge, Sonali S Datar, Pradeep S Umap, Alok C Shrivastava
Primitive neuroectodermal tumors (PNETs) are a group of highly malignant small round cell tumor (SRCT) of neuroectodermal origin. They exhibit a great diversity in their clinical manifestations and pathologic similarities with other SRCTs. PNET commonly occurs in the central nervous system, head and neck region, paravertebral region, pelvis, and lower extremities. PNET presenting as a presacral mass is very rare. We present a case of 65-year-old female patient presented with a mass in the abdomen. Exploratory laparotomy with excision of mass was carried out...
April 2017: Indian Journal of Pathology & Microbiology
https://www.readbyqxmd.com/read/28626400/long-term-efficacy-of-s-1-chemotherapy-plus-administration-of-octreotide-for-a-patient-with-metastatic-neuroendocrine-tumor-gastrinoma
#4
Sakura Hiraide, Sadahide Ono, Satoshi Kato
Metastatic neuroendocrine tumors (gastrinomas) have a poor prognosis. Octreotide can reduce gastrin levels and alleviate hormonal symptoms, and possibly slow tumor growth as well. No drugs were available except streptozocin for the treatment of metastatic pancreatic neuroendocrine tumor (PNET) in 2008. We report a case of PNET in a 53-year-old woman with multiple liver tumors treated with S-1 plus octreotide. After 6 months from the initiation of the treatment, the pancreatic tumor and liver metastases regressed, and the patient achieved partial response without the development of any serious adverse event...
May 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28624923/a-comparison-of-enhancement-patterns-on-dynamic-enhanced-ct-and-survival-between-patients-with-pancreatic-neuroendocrine-tumors-with-and-without-intratumoral-fibrosis
#5
Cherry Kim, Jae Ho Byun, Seung-Mo Hong, Soyeon An, Jin Hee Kim, Seung Soo Lee, Hyoung Jung Kim
PURPOSE: To compare CT findings and survival between patients with pancreatic neuroendocrine tumors (pNETs) with and without fibrosis. METHODS: Forty-five pNET patients with intratumoral fibrosis (group A) were matched for age, gender, and tumor size and grade with 45 pNET patients without (group B), and CT images were retrospectively reviewed. Hounsfield units (HUs) of tumors in unenhanced, arterial and portal phases, HU ratio (tumor to normal parenchyma) in each phase, enhancement patterns, visible enhancement pattern changes, and survival were compared...
June 17, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28610828/revised-nodal-stage-for-pancreatic-neuroendocrine-tumors
#6
Guopei Luo, Kaizhou Jin, He Cheng, Meng Guo, Yu Lu, Zhengshi Wang, Chao Yang, Jinzhi Xu, Heli Gao, Shirong Zhang, Bo Zhang, Jiang Long, Jin Xu, Quanxing Ni, Chen Liu, Xianjun Yu
BACKGROUND: Previously we have proposed a modified European Neuroendocrine Tumor Society (mENETS) staging system for pNETs, which is more suitable than either the American Joint Committee on Cancer (AJCC) or the European Neuroendocrine Tumor Society (ENETS) systems. However, it is necessary to revise the nodal stage of the mENETS system for the under representation of stage III diseases. METHODS: Nodal substages of the upper gastrointestinal organs (N0: 0 node, N1: 1-2 nodes; N2: ≥3 nodes) or the lower gastrointestinal organs (0: 0 node, N1: 1-3 nodes, and N2:≥ 4 nodes) were incorporated into the mENETS system and evaluated using the Surveillance, Epidemiology, and End Results (SEER) registry series...
June 10, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28609362/everolimus-effect-on-gastrin-and-glucagon-in-pancreatic-neuroendocrine-tumors
#7
Marianne E Pavel, David Chen, Wei He, Stephanie Cushman, Maurizio Voi, Elisabeth G E de Vries, Eric Baudin, James C Yao
OBJECTIVES: The pharmacodynamic effects of everolimus on gastrointestinal hormone levels have not been described in patients with pancreatic neuroendocrine tumors (pNETs). We report the effects of everolimus on gastrin and glucagon levels in patients with progressive pNET in RADIANT-1 (a single-arm phase II trial) and RADIANT-3 (a placebo-controlled, randomized, phase III trial). METHODS: Serum gastrin and glucagon levels were determined by immunoassay at baseline and at predose in subsequent treatment cycles in patients with elevated baseline hormone levels...
July 2017: Pancreas
https://www.readbyqxmd.com/read/28605142/aberrant-expression-of-fli-1-in-melanoma
#8
Nisha Ramani, Phyu P Aung, Wen-Jen Hwu, Priyadharsini Nagarajan, Michael T Tetzlaff, Jonathan L Curry, Doina Ivan, Victor G Prieto, Carlos A Torres-Cabala
FLI-1 (Friend leukemia integration site 1) nuclear transcription factor has been proposed as a suitable tool in the differential diagnosis of small round cell sarcomas. It has also been described as nuclear marker of endothelial differentiation. Expression of FLI-1 has been demonstrated in Ewing's sarcoma/ primitive neuroectodermal tumor (ES/PNET) and vascular neoplasms. In the present study, we describe two cases of metastatic melanoma with small round blue cell morphology that showed strong nuclear expression of FLI-1...
June 12, 2017: Journal of Cutaneous Pathology
https://www.readbyqxmd.com/read/28594340/a-new-scoring-system-to-predict-recurrent-disease-in-grade-1-and-2-nonfunctional-pancreatic-neuroendocrine-tumors
#9
Cansu G Genç, Anneke P Jilesen, Stefano Partelli, Massimo Falconi, Francesca Muffatti, Folkert J van Kemenade, Susanne van Eeden, Joanne Verheij, Susan van Dieren, Casper H J van Eijck, Elisabeth J M Nieveen van Dijkum
OBJECTIVE: The aim of this study was to predict recurrence in patients with grade 1 or 2 nonfunctioning pancreatic neuroendocrine tumors (NF-pNET) after curative resection. BACKGROUND: Surgical resection is the preferred treatment for NF-pNET; however, recurrence occurs frequently after curative surgery, worsening prognosis of patients. METHODS: Retrospectively, patients with NF-pNET of 3 institutions were included. Patients with distant metastases, hereditary syndromes, or grade 3 tumors were excluded...
January 3, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28591817/efficacy-of-radiotherapy-for-primary-tumor-in-patients-with-unresectable-pancreatic-neuroendocrine-tumors
#10
Tomoyuki Iwata, Hideki Ueno, Jun Itami, Yoshinori Ito, Koji Inaba, Chigusa Morizane, Shunsuke Kondo, Yasunari Sakamoto, Satoshi Shiba, Mitsuhito Sasaki, Futa Koga, Takuji Okusaka
Background: Detailed information regarding the clinical efficacy of radiotherapy (RT) for primary tumor in patients with unresectable pancreatic neuroendocrine tumors (pNETs) is unknown. We therefore performed a retrospective study to evaluate the efficacy and safety of RT for primary pancreatic tumors in patients with pNETs. Methods: We investigated 11 patients with pNETs who received RT to the primary site between January 1997 and June 2015. Seven patients had Grade 2 neuroendocrine tumors (NET-G2) and four had neuroendocrine carcinoma (NEC) according to the 2010 WHO histopathological classification...
June 7, 2017: Japanese Journal of Clinical Oncology
https://www.readbyqxmd.com/read/28567607/pancreatic-neuroendocrine-tumors-in-men1-disease-a-mono-centric-longitudinal-and-prognostic-study
#11
S Chiloiro, F Lanza, A Bianchi, G Schinzari, M G Brizi, A Giampietro, V Rufini, F Inzani, A Giordano, G Rindi, A Pontecorvi, L De Marinis
PURPOSE: Multiple endocrine neoplasia type 1 (MEN1) is an inherited endocrine neoplastic syndrome associated with a greater risk of endocrine tumor development like pancreatic neuroendocrine tumors (p-NET), with different clinical characteristics from sporadic ones. This paper aims to compare clinical, hystological and morphological aspects of p-NET in patients affected from MEN1 (MEN1+) and not-affected ones (MEN1-). METHODS: We performed a retrospective observational study...
May 31, 2017: Endocrine
https://www.readbyqxmd.com/read/28567071/associating-liver-partition-and-portal-vein-ligation-for-staged-hepatectomy-a-surgical-technique-for-liver-resections
#12
Behnam Sanei, Saba Sheikhbahaei, Mohammad Hossein Sanei, Amin Bahreini, Hamid Reza Jafari
BACKGROUND: Associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) is a novel surgical technique liver resection in traditionally nonresectable primary intrahepatic tumors or colorectal liver metastases. MATERIALS AND METHODS: From June 2013 to March 2014, patients with primary tumor of liver or colorectal tumors with liver metastasis were selected to evaluate whether they met the initial criteria for ALPPS procedure. RESULTS: Nine patients enrolled in the study with primary diagnoses of colon and rectosigmoid cancer, carcinoid tumor, gastrointestinal stromal tumor of small intestine, hepatocellular carcinoma, and pancreatic neuroendocrine tumor (PNET)...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/28554176/fine-needle-aspiration-of-metastatic-central-type-primitive-neuroectodermal-tumors-in-patients-with-a-germ-cell-tumor
#13
Shaoxiong Chen, Muhammad Idrees, Jingmei Lin, Howard H Wu
OBJECTIVE: Central type primitive neuroectodermal tumors (PNET) are some of the most frequent somatic type tumors derived from germ cell tumors and can metastasize. We studied the cytomorphological features of metastatic central type PNET by fine-needle aspiration (FNA). MATERIALS AND METHODS: A computerized search of our laboratory information system was performed for the 9-year period from 2005 through 2014 to identify all cytology cases in which a diagnosis of metastatic central type PNET had been rendered...
May 30, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28547856/prognostic-impact-of-the-cumulative-dose-and-dose-intensity-of-everolimus-in-patients-with-pancreatic-neuroendocrine-tumors
#14
Rossana Berardi, Mariangela Torniai, Sara Pusceddu, Francesca Spada, Toni Ibrahim, Maria Pia Brizzi, Lorenzo Antonuzzo, Piero Ferolla, Francesco Panzuto, Nicola Silvestris, Stefano Partelli, Benedetta Ferretti, Federica Freddari, Calogero Gucciardino, Enrica Testa, Laura Concas, Sabina Murgioni, Alberto Bongiovanni, Clizia Zichi, Nada Riva, Maria Rinzivillo, Oronzo Brunetti, Lucio Giustini, Francesco Di Costanzo, Gianfranco Delle Fave, Nicola Fazio, Filippo De Braud, Massimo Falconi, Stefano Cascinu
The aim of this work is to assess if cumulative dose (CD) and dose intensity (DI) of everolimus may affect survival of advanced pancreatic neuroendocrine tumors (PNETs) patients. One hundred and sixteen patients (62 males and 54 females, median age 55 years) with advanced PNETs were treated with everolimus for ≥3 months. According to a Receiver operating characteristics (ROC) analysis, patients were stratified into two groups, with CD ≤ 3000 mg (Group A; n = 68) and CD > 3000 mg (Group B; n = 48)...
May 25, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28545192/atypical-teratoid-rhabdoid-tumor-of-brain-a-clinicopathologic-study-of-eleven-patients-and-review-of-literature
#15
Nasir Ud Din, Abrar Barakzai, Aisha Memon, Sheema Hasan, Zubair Ahmad
Background: Atypical teratoid/ rhabdoid tumor (AT/RT) is a rare aggressive embryonal central nervous system (CNS) tumor of infancy and early childhood. Majority of the cases arise in the posterior fossa, and remaining in the cerebrum. Aims: To analyze the clinicopathologic features of AT/RT on a cohort of cases. Materials and methods: All reported cases of AT/RT at the Department of Pathology and Laboratory Medicine, Aga Khan University Hospital (AKUH) from 2007 to 2016 were reviewed for clinical and pathological features...
April 1, 2017: Asian Pacific Journal of Cancer Prevention: APJCP
https://www.readbyqxmd.com/read/28535439/critical-focus-on-mechanisms-of-resistance-and-toxicity-of-m-tor-inhibitors-in-pancreatic-neuroendocrine-tumors
#16
REVIEW
L Antonuzzo, M Del Re, V Barucca, F Spada, G Meoni, G Restante, R Danesi, F Di Costanzo, N Fazio
Pancreatic neuroendocrine tumors (pNETs) are rare neoplasms representing less than 2% of all pancreatic malignancies. The PI3K-AKT-mTOR pathway is often deregulated in pNETs and seems to play a key role in tumorigenesis. Everolimus, an inhibitor of the mTOR pathway, has demonstrated efficacy in the treatment of pNETs. Nevertheless de novo or acquired drug resistance is responsible for disease progression and represents a major obstacle to overcome by clinicians. Blocking the PI3K/AKT/mTOR pathway may cover the supposed main mechanisms of resistance to everolimus...
June 2017: Cancer Treatment Reviews
https://www.readbyqxmd.com/read/28534008/a-comparison-of-pediatric-vs-adult-patients-with-the-ewing-sarcoma-family-of-tumors
#17
Vivek Verma, Kyle A Denniston, Christopher J Lin, Chi Lin
PURPOSE: This study sought to identify differences in clinical characteristics, outcomes, and treatments between adult and pediatric patients with the Ewing sarcoma family of tumors (ESFT). METHODS: By using the Surveillance, Epidemiology, and End Results database from 1983 to 2013, 1,870 patients were analyzed (n = 976 pediatric, n = 894 adult). Between the two groups, demographic, tumor, and treatment characteristics were collated and compared. The chi-square test determined differences in proportions of the variables between groups...
2017: Frontiers in Oncology
https://www.readbyqxmd.com/read/28515922/primary-primitive-neuroectodermal-tumor-of-the-cervix-a-report-of-two-cases-and-review-of-the-literature
#18
Xiaofeng Wang, Yan Gao, Yanning Xu, Yixin Liu, Pengpeng Qu
Peripheral primitive neuroectodermal tumor (PNET) of the cervix uteri is extremely rare. Two cases of PNET of the cervix are presented herein. Two female patients, aged 48 and 43 years, presented with irregular uterine bleeding over the course of 1 year, and increased urinary frequency for 1 month, respectively. On gynecological examination, a mass in the cervix was palpated and a biopsy performed. The findings of the initial biopsy revealed small-cell carcinoma in both patients. Following neoadjuvant chemotherapy and radiotherapy, radical hysterectomy was performed in both patients...
May 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/28510792/a-systematic-review-of-proinsulin-secreting-pancreatic-neuroendocrine-tumors
#19
Timothy D Murtha, Beatrice C Lupsa, Sachin Majumdar, Dhanpat Jain, Ronald R Salem
BACKGROUND: Pancreatic neuroendocrine tumors (PNETs) are a heterogeneous group of islet cell-derived neoplasms with a propensity toward hormone production. Among PNETs, proinsulin-secreting tumors (proinsulinomas) are exceedingly rare. The objective of this study is to collect and summarize the existing literature to provide a comprehensive evaluation of this uncommon disease. METHODS: A systematic review was performed to characterize the clinicopathologic features of proinsulinoma...
May 16, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28509337/impact-of-induction-chemotherapy-hyperfractionated-accelerated-radiotherapy-and-high-dose-thiotepa-on-brain-volume-loss-and-functional-status-of-children-with-primitive-neuroectodermal-tumour
#20
Elwira Szychot, Kiran Seunarine, Kshitij Mankad, Steffi Thust, Chris Clark, Mark N Gaze, Antony Michalski
BACKGROUND: The introduction of aggressive chemo-radiotherapy regimens has improved overall survival in children with primitive neuroectodermal tumours (PNET). However, these combinations may result in neurotoxicity. Previously reported magnetic resonance imaging abnormalities in children receiving intensive sequential chemotherapy, hyperfractionated accelerated radiotherapy (HART) and high-dose thiotepa prompted us to investigate the degree of brain volume loss and patients' functional status after therapy...
May 16, 2017: Pediatric Blood & Cancer
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