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https://www.readbyqxmd.com/read/28646826/comparison-of-brca1-expression-between-triple-negative-and-luminal-breast-tumors
#1
Farzaneh Darbeheshti, Pantea Izadi, Amir Nader Emami Razavi, Mir Saeed Yekaninejad, Javad Tavakkoly Bazzaz
Background: Previous studies have suggested that BRCA1 dysregulation has a role in triple-negative phenotypic manifestation. However, differences of BRCA1 expression, as a tumor suppressor gene, have rarely been investigated between luminal and triple-negative breast tumors. Therefore, the present study attempted to compare the BRCA1 expression in triple-negative with luminal breast tumors and its association with the clinicopathologic characteristics of patients. Methods: BRCA1 expression was evaluated by real-time PCR in 26 triple-negative and 27 luminal breast tumors...
June 25, 2017: Iranian Biomedical Journal
https://www.readbyqxmd.com/read/28646723/vacuum-assisted-complete-excision-of-solid-intraductal-intracystic-masses-and-complex-cysts-is-follow-up-necessary
#2
Vanessa Quinn-Laurin, Jean-Charles Hogue, Sylvie Pinault, Nathalie Duchesne
INTRODUCTION: Management of complex cysts and benign intraductal/intracystic masses is controversial. The aim of this study was to determine if the complete removal of the complex cyst lesions with ultrasound-guided vacuum-assisted excision (US-VAE) is sufficient for their safe management when the histological diagnosis obtained at biopsy is benign. SUBJECTS AND METHODS: This is a single institution retrospective study performed on patients who underwent breast biopsy between April 2007 and September 2013...
June 21, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28646705/identification-and-in-vitro-characterization-of-novel-nanobodies-against-human-granulocyte-colony-stimulating-factor-receptor-to-provide-inhibition-of-g-csf-function
#3
Hamid Bakherad, Seyed Latif Mousavi Gargari, Zargham Sepehrizadeh, Hossein Aghamollaei, Ramezan Ali Taheri, Maryam Torshabi, Mojtaba Tabatabaei Yazdi, Walead Ebrahimizadeh, Neda Setayesh
It has been shown that Granulocyte colony-stimulating factor (G-CSF) has a higher expression in malignant tumors, and anti-G-CSF therapy considerably decreases tumor growth, tumor vascularization and metastasis. Thus, blocking the signaling pathway of G-CSF could be beneficial in cancer therapy. This study is aimed at designing and producing a monoclonal nanobody that could act as an antagonist of G-CSF receptor. Nanobodies are the antigen binding fragments of camelid single-chain antibodies, also known as VHH...
June 21, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28646606/vismodegib-for-recurrent-locally-destructive-basal-cell-carcinoma-in-a-renal-transplant-patient
#4
P Koelblinger, R Dummer, M Laimer, S Hecht, J W Bauer, A Gaggl, A Kugler
Solid organ transplant patients are at an increased risk of developing cutaneous malignancies owing to long-lasting immunosuppression. The strongest increase in incidence (35-fold) has been reported for cutaneous squamous cell carcinoma [1]. Basal cell carcinoma (BCC) may occur even more frequently, especially during the first years after transplantation [2]. The hedgehog-inhibitor vismodegib has been safely used for the treatment of locally advanced or metastatic BCC in immunocompetent patients since 2012 [3]...
June 24, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28646602/comparison-of-acoustic-radiation-force-impulse-imaging-and-strain-elastography-in-differentiating-malignant-from-benign-thyroid-nodules
#5
Fengjuan Zhang, Xinming Zhao, Ruoling Han, Min Du, Ping Li, Xiaohui Ji
OBJECTIVES: This study aimed to evaluate the diagnostic value of acoustic radiation force impulse (ARFI) imaging and strain elastography in differentiating malignant from benign thyroid nodules. METHODS: This study included 128 patients (104 female and 24 male; mean age ± standard deviation, 48 ± 11 years; range, 23-76 years) with 152 pathologically proven thyroid nodules. Conventional sonography, strain ratio (SR) of strain elastography, virtual touch tissue imaging (VTI) grade, and virtual touch tissue quantification (shear wave velocity [SWV]) from ARFI imaging data were generated for each nodule...
June 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28646421/how-safe-and-effective-is-denosumab-for-bone-giant-cell-tumour
#6
REVIEW
Costantino Errani, Shinji Tsukamoto, Andreas F Mavrogenis
Recent clinical studies have suggested that denosumab is associated with beneficial tumour response, surgical down-staging, and reduced surgical morbidity in patients with giant cell tumour of bone. However, these studies reported results of patients still on denosumab treatment, or patients after denosumab treatment but with a short follow-up. Other studies reported that the new osseous tumour matrix and thickened cortical bone that develop with denosumab treatment does not allow the surgeon to delineate the true extent of the tumour, and probably increases the risk for local recurrence...
June 23, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28646420/composite-reverse-shoulder-arthroplasty-can-provide-good-function-and-quality-of-life-in-cases-of-malignant-tumour-of-the-proximal-humerus
#7
Cyril Lazerges, Louis Dagneaux, Benjamin Degeorge, Nicolas Tardy, Bertrand Coulet, Michel Chammas
PURPOSE: Management of proximal humeral tumours remains a surgical challenge. No study to date has assessed the quality of life scores following the composite reverse shoulder arthroplasty for this indication. We, therefore, evaluated function and quality of life following reconstruction with allograft for malignant tumour of the humerus. METHODS: A series of six cases of humeral tumour treated by a single surgeon in a single centre was reviewed after a mean follow-up of 5...
June 23, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28646364/sinonasal-malignancies-incidence-and-histological-distribution-in-jamaica-1973-2007
#8
Tracey N Gibson, Dawn P McNaughton, Barrie Hanchard
PURPOSE: To determine the histological distribution and trends in incidence of sinonasal malignancies in Jamaica. METHODS: Cases of all sinonasal malignancies diagnosed between 1973 and 2007 were extracted from the archives of the Jamaica Cancer Registry. Data recorded for each case included age at diagnosis, sex, year of diagnosis, topography, and histology. Data were used to calculate frequencies, age-specific incidence rates, and age-standardized incidence rates (ASRs)...
June 23, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28646342/a-case-of-malignant-peritoneal-mesothelioma-suggesting-the-utility-of-combining-double-contrast-radiography-and-endoscopy-with-computed-tomography-for-diagnosis
#9
Hirokazu Saito, Shota Hasuda, Jiro Nasu, Mitsuhiko Kitaoka, Ikuo Matsushita
A 68-year-old woman presented with abdominal pain, weight loss, and vomiting. Enhanced computed tomography (CT) showed slightly increased density in the mesentery and edema of the third portion of the duodenum and proximal jejunum. Little ascites, but no primary lesion, lymph node metastases, or distant metastases, were observed. Endoscopic findings included erythema and edema in the distal duodenum and proximal jejunum without epithelial lesions. Double-contrast radiography revealed transverse ridging with convergence, suggesting a serosal lesion...
June 23, 2017: Clinical Journal of Gastroenterology
https://www.readbyqxmd.com/read/28646333/feeding-jejunostomy-associated-small-bowel-necrosis-after-elective-esophago-gastric-resection
#10
Omer S Al-Taan, Robert N Williams, James A Stephenson, Melanie Baker, S Murthy Nyasavajjala, David J Bowrey
BACKGROUND: Feeding jejunostomy has increasingly become a standard adjunctive procedure during major esophago-gastric resections. They provide nutritional support during the post-operative period as required. However, significant early complications have been reported, most notably small bowel necrosis. Literature reports have been restricted to case reports or series. This study aims to determine the frequency of this complication in a cohort of patients undergoing esophago-gastric resection, and identify any difference in the risk of this complication between patients undergoing esophagectomy and gastrectomy...
June 23, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28646282/surgery-for-pancreatic-ductal-adenocarcinoma
#11
REVIEW
R Vera, L Díez, E Martín Pérez, J C Plaza, A Sanjuanbenito, A Carrato
Surgical resection is the only potentially curative option in the treatment of pancreatic ductal adenocarcinoma. Preoperative radiological imaging allows to rule out the presence of metastases. Three resectability categories are established based on the radiological findings depending on the degree of contact between the tumor and the blood vessels. Histological confirmation of malignancy is only required in cases of borderline or non-resectable tumors, prior to neoadjuvant treatment initiation. Diagnostic laparoscopy is recommended in the presence of large tumors of the body or tail and in borderline tumors to explore the possibility of resection and to apply treatment with curative intent, as well as in those cases with high level of biomarkers to rule out peritoneal involvement...
June 23, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28646266/pericytes-promote-abnormal-tumor-angiogenesis-in-a-rat-rg2-glioma-model
#12
Junji Hosono, Shunichi Morikawa, Taichi Ezaki, Takakazu Kawamata, Yoshikazu Okada
In glioma angiogenesis, tumor vessels cause morphological and functional abnormalities associated with malignancy and tumor progression. We hypothesized that certain structural changes or scantiness of functional pericytes may be involved in the formation of dysfunctional blood vessels in gliomas. In this study, we performed morphological examinations to elucidate the possible involvement of pericytes in brain tumor vessel abnormalities using a rat RG2 glioma model. After implantation of RG2 glioma cells in the syngeneic rat brain, gliomas were formed as early as day 7...
June 23, 2017: Brain Tumor Pathology
https://www.readbyqxmd.com/read/28646224/role-of-new-immunophenotypic-markers-on-prognostic-and-overall-survival-of-acute-myeloid-leukemia-a-systematic-review-and-meta-analysis
#13
A F O Costa, D L Menezes, L H S Pinheiro, A F Sandes, M A P Nunes, D P Lyra Junior, D M Schimieguel
Despite technological advances, the prognosis and survival of acute myeloid leukemia (AML) adult patients remain low, compared with other hematologic malignancies. Some antigens detected by immunophenotyping may soon play a significant role in the pathophysiologic, prognostic, and overall survival (OS) rate of AML patients. Therefore, we conducted a systematic review and meta-analysis of PubMed, Scopus, Science Direct, Web of Science, and the Cochrane Library (using PRISMA guidelines). We analyzed 11 studies and 13 antigens, detected through the immunophenotyping of 639 patients...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646172/dacomitinib-a-pan-inhibitor-of-erbb-receptors-suppresses-growth-and-invasive-capacity-of-chemoresistant-ovarian-carcinoma-cells
#14
Majid Momeny, Ghazaleh Zarrinrad, Farima Moghaddaskho, Arash Poursheikhani, Ghazaleh Sankanian, Azam Zaghal, Shahab Mirshahvaladi, Fatemeh Esmaeili, Haniyeh Eyvani, Farinaz Barghi, Zahra Sabourinejad, Zivar Alishahi, Hassan Yousefi, Reza Ghasemi, Leila Dardaei, Davood Bashash, Bahram Chahardouli, Ahmad R Dehpour, Javad Tavakkoly-Bazzaz, Kamran Alimoghaddam, Ardeshir Ghavamzadeh, Seyed H Ghaffari
Epithelial ovarian cancer (EOC) is the most lethal gynaecological malignancy worldwide. Development of chemoresistance and peritoneal dissemination of EOC cells are the major reasons for low survival rate. Targeting signal transduction pathways which promote therapy resistance and metastatic dissemination is the key to successful treatment. Members of the ErbB family of receptors are over-expressed in EOC and play key roles in chemoresistance and invasiveness. Despite this, single-targeted ErbB inhibitors have demonstrated limited activity in chemoresistant EOC...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646155/breast-cancer-multi-classification-from-histopathological-images-with-structured-deep-learning-model
#15
Zhongyi Han, Benzheng Wei, Yuanjie Zheng, Yilong Yin, Kejian Li, Shuo Li
Automated breast cancer multi-classification from histopathological images plays a key role in computer-aided breast cancer diagnosis or prognosis. Breast cancer multi-classification is to identify subordinate classes of breast cancer (Ductal carcinoma, Fibroadenoma, Lobular carcinoma, etc.). However, breast cancer multi-classification from histopathological images faces two main challenges from: (1) the great difficulties in breast cancer multi-classification methods contrasting with the classification of binary classes (benign and malignant), and (2) the subtle differences in multiple classes due to the broad variability of high-resolution image appearances, high coherency of cancerous cells, and extensive inhomogeneity of color distribution...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646022/nf1-hematopoietic-cells-accelerate-malignant-peripheral-nerve-sheath-tumor-development-without-altering-chemotherapy-response
#16
Rebecca D Dodd, Chang-Lung Lee, Tess Overton, Wesley Huang, William C Eward, Lixia Luo, Yan Ma, Davis R Ingram, Keila E Torres, Diana M Cardona, Alexander Lazar, David G Kirsch
Haploinsufficiency in the tumor suppressor NF1 contributes to the pathobiology of type 1 neurofibromatosis, but a related role has not been established in malignant peripheral nerve sheath tumors (MPNST) where NF1 mutations also occur. Patients with NF1-associated MPNST appear to have worse outcomes than patients with sporadic MPNST, but the mechanism underlying this correlation is not understood. To define the impact of stromal genetics on the biology of this malignancy, we developed unique mouse models that reflect the genetics of patient-associated MPNST...
June 23, 2017: Cancer Research
https://www.readbyqxmd.com/read/28645924/anterior-abdominal-wall-extraosseous-osteosarcoma-occurring-40-years-after-para-aortic-irradiation
#17
Muhammad Furrukh, Asim Qureshi, Nadira Mamoon, Menahil Fatima
Extraskeletal osteosarcomas (OSs) are highly malignant soft tissue tumours associated with a poor prognosis. Only a few records of these rare aggressive neoplasms have been reported in the literature.We describe the case of a 49-year-old man, who presented to our tertiary care centre with a painful isolated lump around the umbilicus. After surgical biopsy, imaging and subsequent pathological analysis, the swelling was diagnosed to be a localised extraskeletal OS. He received previous radiation as treatment for testicular seminoma 40 years ago, which has been in remission ever since...
June 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28645922/management-of-high-grade-dysplasia-of-the-cystic-duct-after-cholecystectomy
#18
Maitham A Moslim, Andrew Tang, Gareth Morris-Stiff
High-grade dysplasia (HGD) of the cystic duct margin without evidence of concurrent malignancy is a rare occurrence. We present a case of a 36-year-old woman who developed gallstone pancreatitis and subsequently underwent a laparoscopic cholecystectomy. On histopathology, she was found to have HGD at the cystic duct margin. Following evaluation, she underwent excision of the cystic duct remnant with no malignancy being present on final pathology. We present this case to discuss the management of cystic duct dysplasia in the absence of gallbladder malignancy...
June 22, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28645875/high-resolution-igh-repertoire-analysis-reveals-fetal-liver-as-the-origin-of-life-long-innate-b-lymphopoiesis-in-humans
#19
Anindita Roy, Vojtech Bystry, Georg Bohn, Katerina Goudevenou, Tomas Reigl, Maria Papaioannou, Adam Krejci, Sorcha O'Byrne, Aristeidis Chaidos, Andrea Grioni, Nikos Darzentas, Irene A G Roberts, Anastasios Karadimitris
The ontogeny of the natural, public IgM repertoire remains incompletely explored. Here, high-resolution immunogenetic analysis of B cells from (unrelated) fetal, child, and adult samples, shows that although fetal liver (FL) and bone marrow (FBM) IgM repertoires are equally diversified, FL is the main source of IgM natural immunity during the 2nd trimester. Strikingly, 0.25% of all prenatal clonotypes, comprising 18.7% of the expressed repertoire, are shared with the postnatal samples, consistent with persisting fetal IgM+ B cells being a source of natural IgM repertoire in adult life...
June 20, 2017: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/28645859/discovery-of-a-novel-pan-raf-inhibitor-with-potent-anti-tumor-activity-in-preclinical-models-of-braf-v600e-mutant-cancer
#20
Sung Pyo Hong, Soon Kil Ahn
AIMS: BRAF mutations, especially BRAF V600E, are a frequent occurrence in malignant melanomas. The BRAF inhibitors are used as the care standard for BRAF-mutant metastatic melanomas. However, melanomas rapidly develop resistance to BRAF inhibitors after a median response duration of 6months, and the subsequent rapid development of cutaneous toxicity is enhanced by the paradoxical activation of CRAF. In this study, we discovered a potent and selective pan-RAF inhibitor: INU-152. The goal of this study was to investigate whether the inhibition of pan-RAF with INU-152 completely disrupts the MAPK pathway in cancer cells bearing BRAF or RAS mutations...
June 20, 2017: Life Sciences
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