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https://www.readbyqxmd.com/read/28340228/dual-immunostain-with-satb2-and-ck20-differentiates-appendiceal-mucinous-neoplasms-from-ovarian-mucinous-neoplasms
#1
Zaibo Li, Rachel Roth, Jonathan B Rock, Amy Lehman, William L Marsh, Adrian Suarez, Wendy L Frankel
Objectives: Determination of the primary site of origin for mucinous neoplasms identified in the peritoneal and/or pelvic cavities may be challenging, with major differential diagnoses including appendiceal mucinous neoplasm (AMN) and ovarian mucinous neoplasm (OMN). Special AT-rich sequence binding protein 2 (SATB2) has been shown to be highly selectively expressed in the lower gastrointestinal tract, including the appendix. Methods: We investigated the utility of a dual stain (DS) with SATB2 or caudal type homeobox 2 (CDX2) and cytokeratin 20 (CK20) or villin in distinguishing AMNs from OMNs...
March 18, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28336546/barrett-s-metaplasia-develops-from-cellular-reprograming-of-esophageal-squamous-epithelium-due-to-gastroesophageal-reflux
#2
Carlos D Minacapelli, Manisha Bajpai, Xin Geng, Christina L Cheng, Abhishek A Chouthai, Rhonda F Souza, Stuart Jon Spechler, Kiron M Das
OBJECTIVE: Gastroesophageal reflux disease (GERD) clinically predisposes to columnar Barrett's metaplasia (BM) in the distal esophagus. We demonstrate evidence supporting cellular origin of BM from reprograming or trans-commitment of resident normal esophageal squamous (NES) epithelial cells in response to acid and bile exposure using an in vitro cell culture model. DESIGN: The hTERT-immortalized NES cell line, NES-B10T, was exposed 5 min/day to Acid and Bile (A+B) mixture for 30 weeks...
March 23, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28336164/expression-of-unusual-immunohistochemical-markers-in-mucinous-breast-carcinoma
#3
Rodrigo de Andrade Natal, Sophie F Derchain, Marina Pavanello, Geisilene R Paiva, Luis O Sarian, José Vassallo
BACKGROUND: Mucinous breast carcinoma is characterized by the production of variable amounts of mucin. Some studies have addressed immunohistochemical characterization of mucinous breast carcinoma using a limited set of antibodies. However, the purpose of the present study was to investigate a larger panel of markers not widely used in daily practice and to determine their pathological implications. METHODS: Forty patients diagnosed with mucinous breast carcinoma were enrolled...
March 20, 2017: Acta Histochemica
https://www.readbyqxmd.com/read/28328000/cdx2-prognostic-value-in-stage-ii-iii-resected-colon-cancer-is-related-to-cms-classification
#4
C Pilati, J Taieb, R Balogoun, L Marisa, A de Reyniès, P Laurent-Puig
Caudal-type homeobox transcription factor 2 (CDX2) is involved in colon cancer (CC) oncogenesis and has been proposed as a prognostic biomarker in patients with stage II or III CC. We analyzed CDX2 expression in a series of 469 CC typed for the new international consensus molecular subtype (CMS) classification, and we confirmed results in a series of 90 CC. Here, we show that lack of CDX2 expression is only present in the mesenchymal subgroup (CMS4) and in MSI-immune tumors (CMS1) and not in CMS2 and CMS3 colon cancer...
February 27, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
https://www.readbyqxmd.com/read/28322096/cdx2-immunostaining-in-primary-and-metastatic-germ-cell-tumours-of-the-testis
#5
Fatma Oz Atalay, Berna Aytac Vuruskan, Hakan Vuruskan
Objective To evaluate the immunohistochemical staining pattern of caudal type homeobox 2 (CDX2) protein in germ cell tumours (GCTs) of the testis. Methods This study reassessed archival tissue samples collected from patients diagnosed with primary and metastatic testicular GCTs for CDX2 immunoreactivity using standard immunohistochemical techniques. Positive nuclear immunostaining was evaluated with regard to both the staining intensity and the extent of the staining. Results Tissue sections from primary and metastatic testicular GCTs ( n = 104), germ cell neoplasia in situ (GCNis) ( n = 5) and benign testicles ( n = 15) were analysed...
December 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/28321513/clinicopathological-features-of-superficial-non-ampurally-duodenal-epithelial-tumor-gastric-phenotype-of-histology-correlates-to-higher-malignant-potency
#6
Takahito Toba, Naoko Inoshita, Mitsuru Kaise, Kosuke Nomura, Yasutaka Kuribayashi, Masami Tanaka, Satoshi Yamashita, Tsukasa Furuhata, Daisuke Kikuchi, Akira Matsui, Toshifumi Mitani, Toshiro Iizuka, Shu Hoteya
BACKGROUND: Superficial non-ampullary duodenal epithelial tumors (SNADETs) are relatively rare, but they are now being detected more frequently due to advances in endoscopic technology. Nevertheless, the pathological nature of SNADETs remains unclear and a management strategy for these tumors has not been established. METHODS: To elucidate the clinicopathological features, we conducted a retrospective analysis of 138 endoscopically resected SNADETs. Lesions were classified into two groups by histological grade according to the Vienna classification: category 3 (71 lesions, 51...
March 20, 2017: Journal of Gastroenterology
https://www.readbyqxmd.com/read/28295004/-serrated-adenomas-of-the-colon-clinical-morphological-and-molecular-genetic-characteristics
#7
L M Mikhaleva, R A Komleva, A E Biryukov, N K Shakhpazyan
AIM: to investigate the clinical, morphological, and molecular genetic characteristics of serrated adenomas of the colon. MATERIAL AND METHODS: The study included 82 colon adenomas from 63 patients aged 29 to 81 years, who underwent colonoscopy with biopsy or polypectomy. The mean age of men was 63.3 years; that of women was 56.8 years. Comprehensive clinical, morphological, immunohistochemical, and molecular genetic examinations were made. RESULTS: The histological examination showed that sessile serrated adenomas (SSA) of the colon were most common (46...
2017: Arkhiv Patologii
https://www.readbyqxmd.com/read/28278514/distinct-clinical-outcomes-of-two-cimp-positive-colorectal-cancer-subtypes-based-on-a-revised-cimp-classification-system
#8
Jeong Mo Bae, Jung Ho Kim, Yoonjin Kwak, Dae-Won Lee, Yongjun Cha, Xianyu Wen, Tae Hun Lee, Nam-Yun Cho, Seung-Yong Jeong, Kyu Joo Park, Sae Won Han, Hye Seung Lee, Tae-You Kim, Gyeong Hoon Kang
BACKGROUND: Colorectal cancer (CRC) is a heterogeneous disease in terms of molecular carcinogenic pathways. Based on recent findings regarding the multiple serrated neoplasia pathway, we revised an eight-marker panel for a new CIMP classification system. METHODS: 1370 patients who received surgical resection for CRCs were classified into three CIMP subtypes (CIMP-N: 0-4 methylated markers, CIMP-P1: 5-6 methylated markers and CIMP-P2: 7-8 methylated markers). Our findings were validated in a separate set of high-risk stage II or stage III CRCs receiving adjuvant fluoropyrimidine plus oxaliplatin (n=950)...
March 9, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28272666/cloacogenic-adenocarcinoma-of-the-vulva-a-case-report-and-review-of-the-literature
#9
Merih Tepeoğlu, Halit Üner, A Nihan Haberal, Özlem Özen, Esra Kuşçu
Primary adenocarcinoma of the vulva, unrelated to the native glands of perineum is an extremely rare neoplasm. Despite awareness of this lesion for over 40 years, the origin is not beyond speculation. The most reasonable hypothesis is based on the remnants of cloacal differentiation during early days of life. Here we report the case of a 60-year-old patient with a vulvar mass, who underwent partial vulvectomy and bilateral regional lymph node dissection. The tumor was composed of papillary and complex glandular structures and exhibited diffuse positivity for cytokeratin 20 and polyclonal CEA, CDX2, and focal positivity with cytokeratin 7...
February 4, 2017: Türk Patoloji Dergisi
https://www.readbyqxmd.com/read/28257862/colony-stimulating-factor-2-enhances-the-developmental-competence-of-yak-poephagus-grunniens-preimplantation-embryos-by-modulating-the-expression-of-heat-shock-protein-70%C3%A2-kda-1a
#10
Zexing Wen, Yangyang Pan, Yan Cui, Xiumei Peng, Ping Chen, Jiangfeng Fan, Guyue Li, Tian Zhao, Jian Zhang, Shujian Qin, Sijiu Yu
Colony-stimulating factor 2 (CSF2) is known to promote the development and survival of rodents and ruminants preimplantation embryos; however, the effect of CSF2 on yak embryos has not been reported. The objective of this study was to investigate the effects of CSF2 on the developmental competence of yak embryos cultured in vitro in modified synthetic oviduct fluid (mSOF) medium and on the expression pattern of heat shock protein 70 kDa 1A (HSPA1A). In each experiment, cumulus-oocyte complexes (COCs) were matured in vitro and fertilized with frozen-thawed semen...
April 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28253304/bone-mineral-density-is-associated-with-vitamin-d-related-rs6013897-and-estrogen-receptor-polymorphism-rs4870044-the-troms%C3%A3-study
#11
Ieva Martinaityte, Rolf Jorde, Nina Emaus, Anne Elise Eggen, Ragnar Martin Joakimsen, Elena Kamycheva
BACKGROUND: Bone mineral density (BMD) is determined by bone remodeling processes regulated by endocrine, autocrine and genetic mechanisms. Thus, some studies have reported that BMD is associated with single nucleotide polymorphisms (SNPs) associated with vitamin D receptor (VDR), serum 25(OH)D levels and estrogen receptor 1 (ESR1), but without consensus. Therefore, we aimed to map and compare the risk genotypes for forearm and total hip low BMD. METHODS AND FINDINGS: Data were derived from a population-based study in northern Norway; the Tromsø Study...
2017: PloS One
https://www.readbyqxmd.com/read/28248814/the-use-of-ancillary-stains-in-the-diagnosis-of-barrett-esophagus-and-barrett-esophagus-associated-dysplasia-recommendations-from-the-rodger-c-haggitt-gastrointestinal-pathology-society
#12
Amitabh Srivastava, Henry Appelman, Jeffrey D Goldsmith, Jon M Davison, John Hart, Alyssa M Krasinskas
Barrett esophagus (BE) is a known risk factor for the development of esophageal adenocarcinoma. Pathologists play a critical role in confirming the diagnosis of BE and BE-associated dysplasia. As these diagnoses are not always straightforward on routine hematoxylin and eosin-stained slides, numerous ancillary stains have been used in an attempt to help pathologists confirm the diagnosis. On the basis of an in-depth review of the literature, the Rodger C. Haggitt Gastrointestinal Pathology Society provides recommendations regarding the use of ancillary stains in the diagnosis of BE and BE-associated dysplasia...
February 28, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28246485/coexisting-tubular-adenoma-with-a-neuroendocrine-carcinoma-of-colon-allowing-early-surgical-intervention-and-implicating-a-shared-stem-cell-origin
#13
Mahmoud L Soliman, Ashish Tiwari, Qing Zhao
High-grade colonic neuroendocrine carcinomas (NECs) are uncommon but extremely aggressive. Their co-existence with tubular adenoma (TA) has rarely been reported. We present a 68-year-old man who was found on routine colonoscopy to have multiple colorectal TAs and an ulcerated lesion in the ascending colon. Microscopically, a poorly-differentiated invasive carcinoma juxtaposed with a TA was identified. Differential diagnosis included a poorly-differentiated adenocarcinoma, medullary carcinoma, high-grade NEC and lymphoma...
February 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28226240/position-and-hippo-signaling-dependent-plasticityduring-lineage-segregation-in-the-early-mouse-embryo
#14
Eszter Posfai, Sophie Petropoulos, Flavia Ro de Barros, John Paul Schell, Igor Jurisica, Rickard Sandberg, Fredrik Lanner, Janet Rossant
The segregation of the trophectoderm (TE) from the inner cell mass (ICM) in the mouse blastocyst is determined by position-dependent Hippo signaling. However, the window of responsiveness to Hippo signaling, the exact timing of lineage commitment and the overall relationship between cell commitment and global gene expression changes are still unclear. Single-cell RNA sequencing during lineage segregation revealed that the TE transcriptional profile stabilizes earlier than the ICM and prior to blastocyst formation...
February 22, 2017: ELife
https://www.readbyqxmd.com/read/28226180/a33-shows-similar-sensitivity-to-but-is-more-specific-than-cdx2-as-an-immunomarker-of-colorectal-carcinoma
#15
Newton A C S Wong, Lukasz A Adamczyk, Shanna Evans, Jayne Cullen, Anca Oniscu, Karin A Oien
AIMS: CDX2 is widely used as a sensitive and specific immunomarker for colorectal carcinoma (CRC) but neither this sensitivity nor specificity is absolute. This study is the first known comparison of CDX1 and A33 against CDX2 as immunomarkers for CRC. METHODS AND RESULTS: As a pilot study, whole sections of 51 cases of liver metastatic carcinoma of different origins - colorectum (n=32), breast (n=3), oesophagogastric tract (n=4), lung (n=3), pancreas (n=8), and prostate (n=1) - were immunostained with CDX1, CDX2 and A33...
February 22, 2017: Histopathology
https://www.readbyqxmd.com/read/28219949/cdx2-is-essential-for-cell-proliferation-and-polarity-in-porcine-blastocysts
#16
Gerelchimeg Bou, Shichao Liu, Mingju Sun, Jiang Zhu, Binghua Xue, Jia Guo, Yueming Zhao, Bo Qu, Xiaogang Weng, Yanchang Wei, Lei Lei, Zhonghua Liu
The role of CDX2 in trophectoderm (TE) cells has been extensively studied, yet the results are contradictory and species specific. Here, CDX2 expression and function were explored in early porcine embryos. Notably, siRNA-mediated gene knockdown and lentivirus-mediated TE-specific gene regulation demonstrated that CDX2 is essential for the maintenance of blastocyst integrity by regulating the BMP4-mediated blastocyst niche and classical protein kinase C (PKC)-mediated TE polarity in mammalian embryos. Mechanistically, CDX2-depleted porcine embryos stalled at the blastocyst stage and exhibited apoptosis and inactive cell proliferation possibly resulting from BMP4 downregulation...
February 20, 2017: Development
https://www.readbyqxmd.com/read/28213066/inguinal-lymph-node-presenting-as-the-delayed-site-of-metastasis-in-early-stage-endometrial-carcinoma-case-report
#17
Shomaila Amir M Akbar, Mutahir A Tunio, Wafa AlShakweer, AbdulAziz AlObaid, Mushabbab AlAsiri
INTRODUCTION: Inguinal lymph nodes are the frequent sites of metastasis for malignant lymphoma, squamous cell carcinoma of anal canal, vulva and penis, malignant melanoma and squamous cell carcinoma of skin over lower extremities or trunk. Anatomically, endometrial carcinoma is less likely to spread to the superficial or deep inguinal lymph nodes, thus metastatic involvement of these lymph nodes can easily be overlooked. CASE PRESENTATION: Here-in we report a case of a 65-year old Saudi morbid obese female, who presented with left inguinal lymphadenopathy as initial delayed site of metastasis almost 19 months after the initial treatment for FIGO IA endometrial carcinoma...
January 19, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28196803/neural-tube-closure-cellular-molecular-and-biomechanical-mechanisms
#18
REVIEW
Evanthia Nikolopoulou, Gabriel L Galea, Ana Rolo, Nicholas D E Greene, Andrew J Copp
Neural tube closure has been studied for many decades, across a range of vertebrates, as a paradigm of embryonic morphogenesis. Neurulation is of particular interest in view of the severe congenital malformations - 'neural tube defects' - that result when closure fails. The process of neural tube closure is complex and involves cellular events such as convergent extension, apical constriction and interkinetic nuclear migration, as well as precise molecular control via the non-canonical Wnt/planar cell polarity pathway, Shh/BMP signalling, and the transcription factors Grhl2/3, Pax3, Cdx2 and Zic2...
February 15, 2017: Development
https://www.readbyqxmd.com/read/28161437/tissue-organization-alters-gene-expression-in-equine-induced-trophectoderm-cells
#19
Brad M Reinholt, Jennifer S Bradley, Robert D Jacobs, Alan D Ealy, Sally E Johnson
Rapid morphological and gene expression changes occur during the early formation of a mammalian blastocyst. Critical to successful retention of the blastocyst and pregnancy is a functional trophectoderm (TE) that supplies the developing embryo with paracrine factors and hormones. The contribution of TE conformational changes to gene expression was examined in equine induced trophoblast (iTr) cells. Equine iTr cells were cultured as monolayers or in suspension to form spheres. The spheres are hollow and structurally reminiscent of native equine blastocysts...
February 1, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/28154274/pancreatic-metastasis-from-rectal-cancer-that-was-diagnosed-by-endoscopic-ultrasonography-guided-fine-needle-aspiration-eus-fna
#20
Itsuki Sano, Akio Katanuma, Kei Yane, Toshifumi Kin, Kazumasa Nagai, Hajime Yamazaki, Hideaki Koga, Koh Kitagawa, Kensuke Yokoyama, Satoshi Ikarashi, Kuniyuki Takahashi, Hiroyuki Maguchi, Yuko Omori, Toshiya Shinohara
Pancreatic metastasis from colorectal cancer is rare, and there have been only a few reports of its preoperative diagnosis by endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) with immunohistochemical staining. We herein describe the case of a 77-year-old woman in whom a solitary mass in the pancreatic tail was detected 11 years after rectal cancer resection. The patient also had a history of pulmonary tumor resection. We performed EUS-FNA and a histopathological examination showed adenocarcinoma with CD20+, CD7-, and CDX2+ (similar to her rectal cancer)...
2017: Internal Medicine
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