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https://www.readbyqxmd.com/read/28548125/next-generation-sequencing-based-molecular-characterization-of-primary-urinary-bladder-adenocarcinoma
#1
Somak Roy, Dinesh Pradhan, Wayne L Ernst, Stephanie Mercurio, Yana Najjar, Rahul Parikh, Anil V Parwani, Reetesh K Pai, Rajiv Dhir, Marina N Nikiforova
Primary bladder adenocarcinoma is a rare and aggressive tumor with poor clinical outcomes and no standard of care therapy. Molecular biology of this tumor is unknown due to the lack of comprehensive molecular profiling studies. The study aimed to identify genomic alterations of clinical and therapeutic significance using next-generation sequencing and compare genomic profile of primary bladder adenocarcinoma with that of high-grade urothelial carcinoma and colorectal adenocarcinoma. A cohort of 15 well-characterized primary bladder adenocarcinoma was subjected to targeted next-generation sequencing for the identification of mutations and copy-number changes in 51 cancer-related genes...
May 26, 2017: Modern Pathology: An Official Journal of the United States and Canadian Academy of Pathology, Inc
https://www.readbyqxmd.com/read/28547987/perirenal-perivascular-epithelioid-cell-tumor-pecoma-coexisting-with-other-malignancies-a-case-report
#2
Marian Danilewicz, Janusz M Strzelczyk, Małgorzata Wagrowska-Danilewicz
Perivascular epithelioid cell tumor (PEComa) is a very rare lesion and is described by the World Health Organization (WHO) as a mesenchymal tumor composed of histologically and immunohistochemically distinctive perivascular epithelioid cells. In this report we describe PEComa with perirenal manifestation, which is exceedingly rare and to our best knowledge up to now worldwide only three cases have been described. Despite the reports that most PEComas are benign, this tumor met criteria for malignancy and coexisted with mucinous gallbladder cancer and nonresectable pancreatic head tumor...
2017: Polish Journal of Pathology: Official Journal of the Polish Society of Pathologists
https://www.readbyqxmd.com/read/28546425/the-first-crystal-structure-of-a-family-129-glycoside-hydrolase-from-a-probiotic-bacterium-reveals-critical-residues-and-metal-co-factors
#3
Mayo Sato, Dorothee Liebschner, Yusuke Yamada, Naohiro Matsugaki, Takatoshi Arakawa, Siobhan S Wills, Mitchell Hattie, Keith A Stubbs, Tasuku Ito, Toshiya Senda, Hisashi Ashida, Shinya Fushinobu
The α-N-acetylgalactosaminidase from the probiotic bacterium Bifidobacterium bifidum (NagBb) belongs to the glycoside hydrolase (GH) family 129 and hydrolyzes the glycosidic bond of Tn antigen (GalNAcα1-Ser/Thr). NagBb is involved in assimilation of O-glycans on mucin glycoproteins by B. bifidum in the human gastrointestinal tract, but its catalytic mechanism has remained elusive because of a lack of sequence homology around putative catalytic residues and of other structural information. Here we report the X-ray crystal structure of NagBb, representing the first GH129 family structure, solved by the single-wavelength anomalous dispersion method based on sulfur atoms of the native protein...
May 25, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28545080/computerized-margin-and-texture-analyses-for-differentiating-bacterial-pneumonia-and-invasive-mucinous-adenocarcinoma-presenting-as-consolidation
#4
Hyun Jung Koo, Mi Young Kim, Ja Hwan Koo, Yu Sub Sung, Jiwon Jung, Sung-Han Kim, Chang-Min Choi, Hwa Jung Kim
Radiologists have used margin characteristics based on routine visual analysis; however, the attenuation changes at the margin of the lesion on CT images have not been quantitatively assessed. We established a CT-based margin analysis method by comparing a target lesion with normal lung attenuation, drawing a slope to represent the attenuation changes. This approach was applied to patients with invasive mucinous adenocarcinoma (n = 40) or bacterial pneumonia (n = 30). Correlations among multiple regions of interest (ROIs) were obtained using intraclass correlation coefficient (ICC) values...
2017: PloS One
https://www.readbyqxmd.com/read/28545033/microrna-expression-levels-as-diagnostic-biomarkers-for-intraductal-papillary-mucinous-neoplasm
#5
Lei Wang, Jianming Zheng, Chang Sun, Li Wang, Gang Jin, Lei Xin, Zhendong Jin, Dong Wang, Zhaoshen Li
Intraductal papillary mucinous neoplasms (IPMNs) are deadly exocrine mucinous tumors. Currently the molecular features and diagnostic markers of IPMNs are not well understood. In this study, we performed microRNA (miRNA) profiling assays to study the potential roles of miRNAs in IPMNs using 78 cases of IPMN patients and controls. When comparing the miRNA expression between IPMN patient samples and controls, we found that miR-210, miR-223, miR-221, miR-155 and miR-187 were differentially expressed in normal pancreas and IPMNs...
May 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28544821/predictive-model-for-high-frequency-microsatellite-instability-in-colorectal-cancer-patients-over-50%C3%A2-years-of-age
#6
Kenji Fujiyoshi, Tatsuro Yamaguchi, Miho Kakuta, Akemi Takahashi, Yoshiko Arai, Mina Yamada, Gou Yamamoto, Sachiko Ohde, Misato Takao, Shin-Ichiro Horiguchi, Soichiro Natsume, Shinsuke Kazama, Yusuke Nishizawa, Yoji Nishimura, Yoshito Akagi, Hirohiko Sakamoto, Kiwamu Akagi
Microsatellite instability (MSI) is an important biomarker for screening for Lynch syndrome, and also of response to immune checkpoint inhibitors. The aim of this study is to create a predictive model to determine which elderly patients with colorectal cancer (CRC) should undergo MSI and/or immunohistochemistry testing on the basis of clinicopathological data. We analyzed a test cohort of CRC patients aged ≥50 years (n = 2219) by multivariate logistic regression analyses to identify predictors of high-frequency MSI (MSI-H)...
May 23, 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28544799/fine-needle-aspiration-cytology-of-primary-cutaneous-mucinous-carcinoma-of-axilla-report-of-a-rare-case
#7
Subrata Pal, Palash Kr Mondal, Rajashre Pradhan, Abhishek Sharma, Biswajit Biswas, Subodh Bhattacharyya
Primary mucinous eccrine carcinoma is a rare malignant adnexal tumor of older patients. The histopathological features of this tumor are well-established but the cytomorphology of this neoplasm has only been documented in a few cases. The cytology and histology of this tumor may mimic metastatic mucinous carcinoma and may cause a diagnostic dilemma, especially when the tumor is located at axilla. A correct diagnosis is important because the prognosis is better than that of a metastatic mucinous carcinoma. Here we report the cytological and histological features of a case of primary cutaneous mucinous carcinoma of axilla in an elderly male patient...
May 24, 2017: Diagnostic Cytopathology
https://www.readbyqxmd.com/read/28544688/prolonged-denervation-induces-remodeling-of-nasal-mucosa-in-rat-model-of-posterior-nasal-neurectomy
#8
Hironobu Nishijima, Kenji Kondo, Makiko Toma-Hirano, Shu Kikuta, Mizuo Ando, Rumi Ueha, Tatsuya Yamasoba
BACKGROUND: The posterior nasal nerve is the dominant source of the parasympathetic, sympathetic, and sensory fibers that innervate the nasal respiratory mucosa. Therefore, a posterior nasal neurectomy (PNN) induces denervation of the nasal mucosa and relieves the nasal symptoms of intractable rhinitis. PNN depletes nerve fibers, choline acetyltransferase, and neuropeptides in nasal respiratory mucosa, and reduces nasal secretion. However, the histological and symptomatic changes over an extended period after PNN remain unknown...
May 23, 2017: International Forum of Allergy & Rhinology
https://www.readbyqxmd.com/read/28543805/mucoepidermoid-carcinoma-of-the-transverse-colon-a-rare-tumor-entity-with-literature-review
#9
Fei Han, Hong Jiang, Suxia Zhang
Mucoepidermoid carcinoma of the gastrointestinal tract is a rare entity. Here, we report a case of mucoepidermoid carcinoma of the transverse colon in a 77-year-old woman who presented with a 2-month history of epigastrium pain, diarrhea and melena. A giant tumor with apparently invading gallbladder was found by enhanced CT scan, then the extended resection of transverse colon was performed for the patient 2 weeks later. Microscopically, the tumor was composed of solid nests of epidermoid and Periodic Acid-Schiff (PAS)-positive mucin-producing cells with desmoplastic stroma...
May 24, 2017: Pathology International
https://www.readbyqxmd.com/read/28541659/multifunctional-screening-platform-for-the-highly-efficient-discovery-of-aptamers-with-high-affinity-and-specificity
#10
Shao-Li Hong, Ya-Tao Wan, Man Tang, Dai-Wen Pang, Zhi-Ling Zhang
Aptamers have attracted much attention as next generation of affinity reagents. Unfortunately, the selection efficiency remains a critical bottleneck for the widespread application of aptamers. Herein, to accelerate aptamers discovery, a multifunctional microfluidic selection platform was developed, on which the selection efficiency was greatly improved and high affinity and specificity aptamers were generated within two round selections. The multifunctional screening platform, precisely manipulating magnetic beads on micrometer scale, improved selection performance based on microfluidic continuous flow and enhanced the selection process control via in-situ monitoring and real-time evaluation...
May 25, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28541641/update-on-rare-epithelial-ovarian-cancers-based-on-the-rare-ovarian-tumors-young-investigator-conference
#11
REVIEW
Ji Yon Agnes Jang, Nozomu Yanaihara, Eric Pujade-Lauraine, Yoshiki Mikami, Katsutoshi Oda, Michael Bookman, Jonathan Ledermann, Muneaki Shimada, Takako Kiyokawa, Byoung Gie Kim, Noriomi Matsumura, Tsunehisa Kaku, Takafumi Kuroda, Yoko Nagayoshi, Ayako Kawabata, Yasushi Iida, Jae Weon Kim, Michael Quinn, Aikou Okamoto
There has been significant progress in the understanding of the pathology and molecular biology of rare ovarian cancers, which has helped both diagnosis and treatment. This paper provides an update on recent advances in the knowledge and treatment of rare ovarian cancers and identifies gaps that need to be addressed by further clinical research. The topics covered include: low-grade serous, mucinous, and clear cell carcinomas of the ovary. Given the molecular heterogeneity and the histopathological rarity of these ovarian cancers, the importance of designing adequately powered trials or finding statistically innovative ways to approach the treatment of these rare tumors has been emphasized...
July 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28541632/ovarian-needle-aspiration-in-the-diagnosis-and-management-of-ovarian-masses
#12
Kimberly Nagamine, Jordan Kondo, Ricky Kaneshiro, Pamela Tauchi-Nishi, Keith Terada
OBJECTIVE: Ovarian needle aspiration and biopsy (ONAB) may be employed for pretreatment diagnosis of ovarian malignancies or intraoperatively to facilitate removal of ovarian masses. However, there is reluctance to utilize this procedure due to potential cyst rupture or seeding of malignant cells. The objective of this study was to examine the efficacy of ONAB over a 13-year period at our institution. METHODS: Between 2000 and 2013, all ONAB specimens were identified from the Queen's Medical Center Pathology Department database...
July 2017: Journal of Gynecologic Oncology
https://www.readbyqxmd.com/read/28540831/ninety-percent-of-the-adverse-outcomes-occur-in-ten-percent-of-patients-can-we-identify-the-populations-at-high-risk-of-developing-peritoneal-metastases-after-curative-surgery-for-colorectal-cancer
#13
Charles Honoré, Maximiliano Gelli, Julie Francoual, Léonor Benhaim, Dominique Elias, Diane Goéré
BACKGROUND: Peritoneal metastases (PM) occur in 3.4% to 6.3% after curative surgery for non-metastatic colorectal cancer. Systematic "2(nd) look" surgery help overcoming the diagnostic problem but can be only proposed to selected patients. The aim of this study was to update the knowledge on risk factors of developing PM after curative surgery for colorectal cancer. METHODS: A systematic review of the literature published between 2011 and 2016 was made, searching for all clinical studies reporting the incidence of recurrent PM after curative surgery for colorectal cancer and factors associated with the primary tumor that were likely to influence this recurrence rate...
March 29, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28540829/pseudomyxoma-peritonei-natural-history-and-treatment
#14
Rohin Mittal, Anuradha Chandramohan, Brendan Moran
Pseudomyxoma peritonei (PMP) is an uncommon disease characterized by mucinous ascites, classically originating from a ruptured low grade mucinous neoplasm of the appendix. The natural history of PMP revolves around the "redistribution phenomenon", whereby mucinous tumour cells accumulate at specific sites with relative sparing of the motile small bowel and to a lesser extent other parts of the gastrointestinal tract. Peritoneal tumour accumulates due to gravity and at the sites of peritoneal fluid absorption, namely, the greater and lesser omentum and the under-surface of the diaphragm, particularly on the right...
March 29, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28540626/cross-sectional-prevalence-of-pancreatic-cystic-lesions-in-patients-with-acromegaly-a-single-center-experience
#15
Yukiko Odake, Hidenori Fukuoka, Masaaki Yamamoto, Yoshifumi Arisaka, Junya Konishi, Kenichi Yoshida, Ryusaku Matsumoto, Hironori Bando, Kentaro Suda, Hitoshi Nishizawa, Genzo Iguchi, Shozo Yamada, Wataru Ogawa, Yutaka Takahashi
PURPOSE: Acromegaly is a disease associated with an increased risk for several kinds of neoplasms including colon and thyroid cancer. Although the association between acromegaly and pancreatic neoplasms has not been elucidated, it has recently been reported that GNAS gene mutations were found in 58% of intraductal papillary mucinous neoplasms (IPMNs), which are representative pancreatic cystic lesions, suggesting a link between IPMNs and acromegaly. To assess the prevalence of pancreatic cystic lesions in patients with acromegaly, we performed a retrospective cross-sectional single institute study...
May 24, 2017: Pituitary
https://www.readbyqxmd.com/read/28540425/contribution-of-plasmid-encoded-peptidase-s8-prtp-to-adhesion-and-transit-in-the-gut-of-lactococcus-lactis-ibb477-strain
#16
Joanna Maria Radziwill-Bienkowska, Véronique Robert, Karolina Drabot, Florian Chain, Claire Cherbuy, Philippe Langella, Muriel Thomas, Jacek Karol Bardowski, Muriel Mercier-Bonin, Magdalena Kowalczyk
The ability of Lactococcus lactis to adhere to the intestinal mucosa can potentially prolong the contact with the host, and therefore favour its persistence in the gut. In the present study, the contribution of plasmid-encoded factors to the adhesive and transit properties of the L. lactis subsp. cremoris IBB477 strain was investigated. Plasmid-cured derivatives as well as deletion mutants were obtained and analysed. Adhesion tests were performed using non-coated polystyrene plates, plates coated with mucin or fibronectin and mucus-secreting HT29-MTX intestinal epithelial cells...
May 24, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28539816/hsa-mir-96-and-hsa-mir-217-expression-down-regulates-with-increasing-dysplasia-in-pancreatic-intraepithelial-neoplasias-and-intraductal-papillary-mucinous-neoplasms
#17
XiaoYan Chang, ChunKai Yu, Ji Li, Shuangni Yu, Jie Chen
AIM: To compare the clinicopathological features of pancreatic intraepithelial neoplasias (PanINs) and intraductal papillary mucinous neoplasms (IPMNs), and to investigate the role of hsa-miR-96 and hsa-miR-217 in these two lesions. Methods: Formalin-fixed paraffin-embedded pancreatic specimens were selected in this study, including 58 cases of pancreatic intraepithelial neoplasias (PanINs), 45 cases of pancreatic ductal adenocarcinomas (PDAs), and 57 cases of intraductal papillary mucinous neoplasms (IPMNs)...
2017: International Journal of Medical Sciences
https://www.readbyqxmd.com/read/28539275/mucosal-transfer-of-wheat-germ-agglutinin-modified-lipid-polymer-hybrid-nanoparticles-for-oral-delivery-of-oridonin
#18
Ying Liu, Jinguang Liu, Jun Liang, Meiying Zhang, Zhe Li, Zhi Wang, Beilei Dang, Nianping Feng
Wheat germ agglutinin-modified lipid-polymer hybrid nanoparticles (WGA-LPNs) promote cellular uptake after oral delivery via receptor-mediated endocytosis and bioadhesion. Understanding the mucosal transport of WGA-LPNs would help to improve bioavailability and ensure therapeutic efficacy. In this study, WGA-LPNs interacted with mucin, forming larger agglomerates with intact core-shell structure. The interaction of WGA-LPNs with mucin improved enterocyte endocytosis in Caco-2 cells. An in situ intestinal diffusion study in mice confirmed that WGA-LPNs reached enterocytes and underwent endocytosis, despite interference from mucin...
May 21, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28538804/transitional-metaplasia-in-intestinal-epithelium-of-rats-submitted-to-intestinal-cystoplasty-and-treatment-with-l-lysine
#19
Alessandra Marques Dos Santos, Joao Paulo Ferreira Coelho, Camila de Carvalho Juanes, Rafael Barbosa de Azevedo, Clara Araujo Diniz, Francisco Vagnaldo Fechine Jamacaru, Conceição Aparecida Dornelas
Purpose: To evaluated the effects of L-lysine on the intestinal and urothelial epithelia in cystoplasty in rats. Methods: Twenty-eight 9-week-old rats were assigned to 4 groups: Group A (n=8) cystoplasty followed by administration of L-lysine (150 mg/kg body weight by gavage) for 30 weeks; Group B (n=8) cystoplasty + water for 30 weeks; Group C (n=6) L-lysine for 30 weeks; Group D (n=6) water for 30 weeks. Results: On histopathology with hematoxylin and eosin, mild to moderate hyperplasia transitional was observed in at the site of anastomosis in all animals submitted to cystoplasty (Groups A and B), but "transitional metaplasia" of the intestinal glandular epithelium was more accentuated in Group A (p=0...
April 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28538395/palisaded-neutrophilic-and-granulomatous-dermatitis-as-a-novel-cause-of-hypercalcemia-a-case-report
#20
Michihito Kono, Tomoka Hasegawa, So Nagai, Toshio Odani, Kazumasa Akikawa, Yukiko Nomura, Hidetsugu Sato, Keisuke Kikuchi, Norio Amizuka, Hideaki Kikuchi
RATIONALE: Palisaded neutrophilic and granulomatous dermatitis (PNGD) is a benign, inflammatory dermatosis with distinct histopathological features often observed in patients with systemic diseases. There were no reports of PNGD without underlying systemic diseases as an underlying cause of hypercalcemia. Herein, we report a case of a 62-year-old man with hypercalcemia due to PNGD, but with no underlying systemic diseases, including tuberculosis, sarcoidosis, or vasculitis. PATIENT CONCERNS: Laboratory tests showed an elevated C-reactive protein level, an elevated corrected calcium level, a normal 25-hydroxyvitamin D level, and an elevated 1,25-dihydroxyvitamin D level...
May 2017: Medicine (Baltimore)
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