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https://www.readbyqxmd.com/read/28342392/value-of-the-68-ga-dotatate-pet-ct-in-the-diagnosis-of-endometriosis-a-pilot-study
#1
M Fastrez, C Artigas, N Sirtaine, Z Wimana, M Caillet, S Rozenberg, P Flamen
OBJECTIVE: The non-invasive diagnosis of endometriosis remains challenging. Recent data suggested that somatostatin might be involved in its pathogenesis. High sensitive visualization of somatostatin receptors expression is possible using PET-CT imaging after the administration of a (68)Ga-labeled somatostatin analog (DOTATATE) that will bind to the somatostatin receptor sub-types 2 and 5. The aim of the present study was to assess the usefulness of (68)Ga-DOTATATE PET-CT in the diagnosis of endometriosis...
March 16, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28340220/her2-neu-status-determination-in-breast-cancer-a-single-institutional-experience-using-a-dual-testing-approach-with-immunohistochemistry-and-fluorescence-in-situ-hybridization
#2
James P Solomon, Marie Dell'Aquila, Oluwole Fadare, Farnaz Hasteh
Objectives: According to current guidelines, either immunohistochemistry (IHC) or in situ hybridization (ISH) can be used to determine human epidermal growth factor receptor 2 (Her2/neu) status in breast carcinoma. While the guidelines explicitly delineate result interpretation, there is no consensus on the most appropriate testing algorithm. Methods: The Her2/neu statuses of 369 consecutive cases of invasive breast cancer (from 351 patients) were assessed in a dual-testing algorithm that uses both IHC and fluorescence ISH (FISH)...
March 11, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28339091/fibulin-4-promotes-osteosarcoma-invasion-and-metastasis-by-inducing-epithelial-to-mesenchymal-transition-via-the-pi3k-akt-mtor-pathway
#3
Dong Zhang, Songgang Wang, Jie Chen, Haitao Liu, Jinfa Lu, Hua Jiang, Aimin Huang, Yunzhen Chen
This study explored the role of fibulin-4 in osteosarcoma progression and the possible signaling pathway involved. Fibulin-4 mRNA and protein expression in normal tissue, benign fibrous dysplasia, osteosarcoma, osteosarcoma cell lines, the normal osteoblastic cell line hFOB, and different invasive subclones were evaluated by immunohistochemistry (IHC) or immunocytochemistry (ICC) and real-time reverse transcriptase-polymerase chain reaction (real-time qRT-PCR). Using in vitro functional assays, we analyzed the invasive and proliferative abilities of different osteosarcoma cell lines and subclones with differing invasive potential...
March 21, 2017: International Journal of Oncology
https://www.readbyqxmd.com/read/28337375/hmga2-regulates-cd44-expression-to-promote-gastric-cancer-cell-motility-and-sphere-formation
#4
Junying Sun, Baocun Sun, Dongwang Zhu, Xiulan Zhao, Yanhui Zhang, Xueyi Dong, Na Che, Jing Li, Fang Liu, Nan Zhao, Danfang Zhang, Tieju Liu, Xian Lin
High mobility group AT-hook 2 (HMGA2) is a transcriptional modulator that mediates motility and self-renewal in cancer stem cells. Gastric cancer (GC) is the third leading cause of cancer-related deaths worldwide. GC contains a population of stem-like cells that promote tumor invasion and resistance to therapy. In the current study, we investigated the expression of HMGA2 and the cancer stem cell marker CD44 in 200 GC samples and found that HMGA2 and CD44 were significantly associated with distant metastasis, histological differentiation and poor prognosis in GC patients...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28337363/epidemiologic-study-of-human-epidermal-growth-factor-receptor-2-expression-in-advanced-metastatic-gastric-cancer-an-assessment-of-human-epidermal-growth-factor-receptor-2-status-in-tumor-tissue-samples-of-gastric-and-gastro-esophageal-junction-cancer
#5
Kyung Won Seo, Taeyong Jeon, Sewon Kim, Sung Soo Kim, Kwanghee Kim, Byoung-Jo Suh, Sunhwi Hwang, SeongHee Choi, Seungwan Ryu, Jae Seok Min, Young-Joon Lee, Ye Seob Jee, Hyeondong Chae, Doo Hyun Yang, Sang Ho Lee
PURPOSE: The Trastuzumab for gastric cancer (GC) trial identified human epidermal growth factor receptor 2 (HER2) as a predictor of successful treatment with trastuzumab (HER2 receptor targeting agent) among patients with advanced/metastatic GC. To date, the prevalence of HER2 overexpression in the Korean population is unknown. The present study aimed to assess the incidence of HER2 positivity among GC and gastroesophageal (GE) junction cancer samples and the relationship between HER2 overexpression and clinicopathological characteristics in Korean patients...
March 2017: Journal of Gastric Cancer
https://www.readbyqxmd.com/read/28336725/quantitative-shotgun-proteomics-unveils-candidate-novel-oesophageal-adenocarcinoma-specific-proteins
#6
J Robert O'Neill, Hui-Song Pak, Erola Pairo-Castineira, Vicki Save, Simon Paterson-Brown, Rudolf Nenutil, Bořivoj Vojtěšek, Ian Overton, Alex Scherl, Ted R Hupp
Oesophageal cancer is the eighth most common cancer worldwide and the majority of patients have systemic disease at presentation. Oesophageal adenocarcinoma (OAC), the predominant subtype in western countries, is largely resistant to current chemotherapy regimens. Selective markers are needed to enhance clinical staging and to allow targeted therapies yet there are minimal proteomic data on this cancer type. After histological review, lysates from OAC and matched normal oesophageal and gastric samples from seven patients were subjected to LC MS/MS after tandem mass tag labelling and OFFGEL fractionation...
March 23, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28336434/vav1-expression-is-increased-in-esophageal-squamous-cell-carcinoma-and-indicates-poor-prognosis
#7
Xiaolei Zhu, Huan Jin, Ziwei Xia, Xianxian Wu, Mingjian Yang, Hongdian Zhang, Xiaobin Shang, Runfen Cheng, Zhongli Zhan, Zhentao Yu
Recently, Vav1 has been suggested to play an essential role in the progression of human cancers. However, the correlation between Vav1 expression and prognosis of esophageal squamous cell carcinoma (ESCC) is still unknown. The aim of this study was to investigate Vav1 expression and its prognostic value in ESCC. The expression of Vav1 was detected by real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blotting in ESCC tissues and matched nontumorous tissues. Immunohistochemistry (IHC) was carried out to detect Vav1 expression in paraffin samples from 112 primary ESCC patients...
March 20, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28335679/puerarin-attenuates-renal-fibrosis-by-reducing-oxidative-stress-induced-epithelial-cell-apoptosis-via-mapk-signal-pathways-in-vivo-and-in-vitro
#8
Xiangjun Zhou, Chen Bai, Xinbo Sun, Xiaoxin Gong, Yong Yang, Congbo Chen, Guang Shan, Qisheng Yao
Puerarin (PR) is an isoflavonoid isolated from the root of the plant Pueraria lobata and has been widely used in traditional Chinese herbal medicine for the treatment of various diseases. Oxidative stress and epithelial cell apoptosis play important roles in the renal fibrotic process. The present study aimed to determine whether or not PR inhibits renal fibrosis by reducing oxidative stress induced-epithelial cell apoptosis. In vivo, unilateral ureteral obstruction (UUO) induced renal fibrosis, and epithelial cell apoptosis...
November 2017: Renal Failure
https://www.readbyqxmd.com/read/28335614/therapeutic-targeting-of-protein-kinase-ck2-gene-expression-in-feline-oral-squamous-cell-carcinoma-a-naturally-occurring-large-animal-model-of-head-and-neck-cancer
#9
Claire Cannon, Janeen Trembley, Betsy Kren, Gretchen Unger, M Gerard O'Sullivan, Ingrid Cornax, Jaime Modiano, Khalil Ahmed
Protein kinase CK2 (CK2) is a highly promising target for cancer therapy and anti-CK2 gene expression therapy has shown effectiveness in rodent models of human head and neck cancer (HNC). To date, there has been no large animal model of cancer in which to further explore anti-CK2 therapies. Feline oral squamous cell carcinoma (FOSCC) has been proposed as a large animal model for human HNC and we have previously shown that CK2 is a rational target in FOSCC. We hypothesized that a novel tenfibgen coated tumor-specific nanocapsule carrying RNAi oligonucleotides targeting feline CK2α and CK2α' (TBG-RNAi-fCK2αα') would be safe in cats with FOSCC...
March 23, 2017: Human Gene Therapy. Clinical Development
https://www.readbyqxmd.com/read/28333147/solute-carrier-family-12-member-5-promotes-tumor-invasion-metastasis-of-bladder-urothelial-carcinoma-by-enhancing-nf-%C3%AE%C2%BAb-mmp-7-signaling-pathway
#10
J Y Liu, Y B Dai, X Li, K Cao, D Xie, Z T Tong, Z Long, H Xiao, M K Chen, Y L Ye, B Liu, J Tan, J Tang, Z Z Xu, Y Gan, Y H Zhou, F Deng, L Y He
Solute carrier family 12 member 5 (SLC12A5), an integral membrane KCl cotransporter, which maintains chloride homeostasis in neurons, is aberrantly expressed and involved in the tumorigenesis of certain cancers. However, the clinical significance and biological role of SLC12A5 in human bladder urothelial carcinoma (BUC) remains unclear. In this study, the expression of SLC12A5 was examined in clinical specimens of primary BUC and in BUC cell lines using quantitative real-time reverse transcription polymerase chain reaction (qRT-PCR), western blot and immunohistochemistry (IHC)...
March 23, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28332091/significance-of-mnk1-in-prognostic-prediction-and-chemotherapy-development-of-epithelial-ovarian-cancer
#11
S Hou, P Du, P Wang, C Wang, P Liu, H Liu
BACKGROUND: Ovarian cancer is the most lethal gynecologic malignancy worldwide with surgery as the only curative treatment. Long-term overall survival (OS) of ovarian cancer is far from satisfactory, even though significant improvement has been made in post-operative chemotherapy. One of the most important death cause is the chemoresistance due to consecutive chemotherapy. Therefore, understanding the molecular mechanisms involved in ovarian cancer development and identification of novel therapeutic targets are urgently required...
March 22, 2017: Clinical & Translational Oncology
https://www.readbyqxmd.com/read/28330128/over-expression-of-notch1-as-a-biomarker-for-invasive-breast-ductal-carcinoma
#12
Mahdi Paryan, Rezvan Tavakoli, Seyed Mohammad Ali Hosseini Rad, Neda Feizi, Fereshteh Kamani, Ehsan Mostafavi, Samira Mohammadi-Yeganeh
Breast cancer is the leading cause of cancer-related death in women worldwide. Invasive ductal carcinoma (IDC) is the most frequent invasive form of breast cancer followed by metastasis. There is no accepted marker for distinguishing this form from other less aggressive forms of breast cancer. Therefore, finding new markers especially molecularly detectable ones are noteworthy. It has been shown that NOTCH1 has been overexpressed in the patients with breast cancer, but no study has investigated the expression of NOTCH1 and its correlation with other molecular and hormonal markers of breast cancer so far...
June 2016: 3 Biotech
https://www.readbyqxmd.com/read/28328619/evaluation-of-o6-methylguanine-dna-methyltransferase-as-a-predicting-factor-of-response-to-temozolomide-based-chemotherapy-in-well-differentiated-metastatic-pancreatic-neuroendocrine-tumors
#13
Paul Girot, Clotilde Dumars, Jean-François Mosnier, Léa Muzellec, Hélène Senellart, Fanny Foubert, François-Xavier Caroli-Bosc, Estelle Cauchin, Nicolas Regenet, Tamara Matysiak-Budnik, Yann Touchefeu
OBJECTIVE: Temozolomide (TMZ) is an alkylating agent frequently used in well-differentiated metastatic pancreatic neuroendocrine tumors (PNETs) with very variable responses. O-methylguanine-DNA methyltransferase (MGMT) is a DNA repair enzyme whose loss of expression has been suggested to be predictive of response to TMZ in various human tumors. We evaluated the predictive value of MGMT status, assessed by immunohistochemistry (IHC) and methylation-specific PCR (MS-PCR), in well-differentiated metastatic PNETs treated by a TMZ-based chemotherapy...
March 21, 2017: European Journal of Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28327189/microrna-27a-contributes-to-the-malignant-behavior-of-gastric-cancer-cells-by-directly-targeting-ph-domain-and-leucine-rich-repeat-protein-phosphatase-2
#14
Lei Ding, Shanyong Zhang, Mu Xu, Renwen Zhang, Pengcheng Sui, Qing Yang
BACKGROUND: Accumulating evidence indicates that microRNA-27a (miR-27a) is involved in carcinogenesis and tumor progression. However, the exact function and molecular mechanism of miR-27a in gastric cancer remain unclear. METHODS: Quantitative real-time PCR (qRT-PCR) was used to quantify the expression of miR-27a and its target gene. The function of miR-27a in gastric cancer was investigated through in vitro and in vivo assays (MTT assay, colony formation assay, flow cytometry assay, wound healing assay, migration and invasion assay, immunohistochemistry (IHC), immunofluorescence (IF) and Western blot)...
March 21, 2017: Journal of Experimental & Clinical Cancer Research: CR
https://www.readbyqxmd.com/read/28326957/alk-gene-copy-number-gain-and-immunohistochemical-expression-status-using-three-antibodies-in-neuroblastoma
#15
Eun Kyung Kim, Sewha Kim
Anaplastic lymphoma kinase ( ALK) gene aberrations-such as mutations, amplifications, and copy number gains-represent a major genetic predisposition to neuroblastoma (NB). This study aimed to evaluate the correlation between ALK gene copy number status, ALK protein expression, and clinicopathological parameters. We retrospectively retrieved 30 cases of poorly differentiated NB and constructed tissue microarrays (TMAs). ALK copy number changes were assessed by fluorescence in situ hybridization (FISH) assays, and ALK immunohistochemistry (IHC) testing was performed using three different antibodies (ALK1, D5F3, and 5A4 clones)...
March 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28325747/brief-fixation-enables-same-day-breast-cancer-diagnosis-with-reliable-assessment-of-hormone-receptors-e-cadherin-and-her2-neu
#16
Altuna Halilovic, Joris Bulte, Yvonne Jacobs, Hanneke Braam, Patricia van Cleef, Margrethe Schlooz-Vries, Annelies Werner, Oliver Boelens, Iris Nagtegaal, Hans de Wilt, Peter Bult
AIMS: Preoperative core needle biopsy (CNB) is commonly used to confirm the diagnosis of breast cancer. For treatment purposes and for determining histological type, especially in case of neoadjuvant therapy, oestrogen receptor (ER), progesterone receptor (PR), human epidermal growth factor receptor 2 (HER2) status and E-cadherin assessments are crucial. Considering the increasing demand for same-day diagnosis of breast lesions, an accelerated method of CNB processing was developed, in which the tissue fixation time is radically reduced...
March 21, 2017: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28325367/contribution-of-maml1-in-esophageal-squamous-cell-carcinoma-tumorigenesis
#17
Mahnaz Hashemi Bidokhti, Mohammad Reza Abbaszadegan, Noorieh Sharifi, Soodabeh Abbasi Sani, Mohammad Mahdi Forghanifard
BACKGROUND: Notch signaling pathway is involved in different cellular and developmental processes including cell proliferation, differentiation and apoptosis. Mastermind like1 (MAML1) is a critical key transcription coactivator of this pathway. In this study, we aimed to examine MAML1 protein expression in esophageal squamous cell carcinoma (ESCC) and reveal its association with clinicopathological variables of the patients. METHODS: Tumoral and their margin normal tissues from 56 ESCC patients were recruited for protein expression analysis using immunohistochemistry (IHC)...
April 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28325359/immunohistochemistry-in-the-workup-of-prostate-biopsies-frequency-variation-and-appropriateness-of-use-among-pathologists-practicing-at-an-academic-center
#18
Sameer Al Diffalha, Mohanad Shaar, Güliz A Barkan, Eva M Wojcik, Maria M Picken, Stefan E Pambuccian
OBJECTIVES: We studied the frequency, inter-pathologist variation, appropriateness and utility of immunohistochemistry (IHC) performed on prostate biopsies (PB) to determine the significance of foci of suspicious glands/atypical small acinar proliferations (ASAP). METHODS: We calculated the rate of IHC use and diagnostic rate of ASAP and adenocarcinoma in PB from 01/01/2008 to 06/30/2015 for individual pathologists working in a tertiary academic institution, and correlated them with the pathologists' experience, subspecialization and PB volume with the aim of determining the interpathologist variation and appropriateness of use of IHC according to recently published recommendations, and the usefulness of IHC to resolve foci of ASAP as either benign or adenocarcinoma...
April 2017: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/28323698/hypertrophy-and-fibrosis-of-the-ligamentum-flavum-in-lumbar-spinal-stenosis-is-associated-with-increased-expression-of-lpa-and-lpar1
#19
Kai Zhang, Wei Sun, Xin-Yu Liu, Chang-Qing Zhao, Hua Li, Xiao-Jiang Sun, Xie You-Zhuan, Wei Ding, Jie Zhao
STUDY DESIGN: Histologic, immunohistochemical (IHC), and enzyme-linked immunosorbent assay analysis of the human ligamentum flavum (LF). OBJECTIVE: The purpose of this study was to determine the level of expression of lysophosphatidic acid (LPA) in the LF from lumbar spinal stenosis (LSS) patients and to analyze the relationship among LPA, LPA receptors (LPARs), and LF hypertrophy. SUMMARY OF BACKGROUND DATA: LF hypertrophy and fibrosis are important causes of LSS...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28321397/the-identification-of-three-cancer-stem-cell-subpopulations-within-moderately-differentiated-lip-squamous-cell-carcinoma
#20
Rachna Ram, Helen D Brasch, Jonathan C Dunne, Paul F Davis, Swee T Tan, Tinte Itinteang
AIM: To identify and characterize cancer stem cells (CSCs) in moderately differentiated lip squamous cell carcinoma (MDLSCC). METHOD: MDLSCC samples underwent 3,3-diaminobenzidine (DAB) immunohistochemical (IHC) staining for squamous cell carcinoma marker EMA, CSC marker CD44 and embryonic stem cell markers NANOG, octamer-binding transcription factor 4 (OCT4), spalt-like transcription factor 4 (SALL4), sex-determining region Y-box 2 (SOX2), and phosphorylated signal transducer and activator of transcription 3 (pSTAT3)...
2017: Frontiers in Surgery
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