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https://www.readbyqxmd.com/read/28279493/effect-of-melanoma-cells-on-proliferation-and-migration-of-activated-hepatic-stellate-cells-in-vitro
#1
Theresa Meyer, Andreas Koch, Eva-Vanessa Ebert, Barbara Czech, Martina Mueller, Anja Bosserhoff, Sven Arke Lang, Claus Hellerbrand
Melanoma is a highly aggressive tumor of the skin. The clinical outcome is determined by the presence or absence of metastases, and the liver is a common site of distant metastases. Hepatic metastasis is causing activation of hepatic stellate cells (HSC), which form the stroma of hepatic metastases and are increasingly recognized as a crucial component of the pro- metastatic liver microenvironment. Most studies have focused on the effects of HSC on (metastasizing) tumor cells. Here, we aimed to analyze functional in vitro effects of conditioned medium (CM) of twelve different human melanoma cell lines on LX2 cells and HSC(htert) cells, two well established human activated HSC cell lines...
December 26, 2016: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28266931/biliary-adenofibroma-of-liver-morphology-tumor-genetics-and-outcomes-in-6-cases
#2
Thomas Arnason, Darrell R Borger, Christopher Corless, Catherine Hagen, A John Iafrate, Hala Makhlouf, Joseph Misdraji, Heidi Sapp, Wilson M Tsui, Ian R Wanless, Tania Zuluaga Toro, Gregory Y Lauwers
Biliary adenofibroma is a rare primary hepatic neoplasm, recognized in the World Health Organization classification, although only 14 cases have been reported to date. This series includes extended follow-up from 2 of the early case reports and 4 novel cases. Clinical history and histology were reviewed in all 6 cases. Tumor DNA was analyzed for point mutations by multiplex polymerase chain reaction and copy number alterations by array comparative genomic hybridization. The patients included 4 females and 2 males presenting between 46 and 83 years of age, with tumors ranging from 7 to 16 cm in diameter...
April 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28261592/pathology-of-intrahepatic-cholangiocarcinoma
#3
REVIEW
Sandrine Vijgen, Benoit Terris, Laura Rubbia-Brandt
Intrahepatic cholangiocarcinoma (iCC) is a primary carcinoma of the liver with increasing significance and major pathogenic, clinical and therapeutic challenges. Classically, it arises from malignant transformation of cholangiocytes bordering small portal bile duct (BD) to second-order segmental large BDs. It has three major macroscopic growth pattern [mass-forming (MF), periductal infiltrative (PI), and intraductal growth (IG)] and histologically is a desmoplastic stroma-rich adenocarcinoma with cholangiocyte differentiation...
February 2017: Hepatobiliary Surgery and Nutrition
https://www.readbyqxmd.com/read/28245426/histopathological-evidence-for-the-existence-of-primary-liver-progenitor-cell-cancer-insight-from-cancer-stem-cell-pathobiology
#4
Cheng-Maw Ho, Shu-Li Ho, Chia-Tung Shun, Po-Huang Lee, Ya-Hui Chen, Chin-Sung Chien, Hui-Ling Chen, Rey-Heng Hu
BACKGROUND: Primary liver progenitor cell cancer is a rare disease entity. Current nomenclature of primary liver cancer with prominent progenitor features is not comprehensive. This study was aimed to investigate the existence of this type of primary liver cancer and characterize it immunohistopathologically based on the emerging understanding of cancer stem cell pathobiology. METHODS: Surgical specimens from a primary liver cancer were stained with antibodies against well-defined markers of progenitor cells, stemness, and differentiation toward hepatocytes or cholangiocytes...
January 2017: Discovery Medicine
https://www.readbyqxmd.com/read/28228877/hepatic-hodgkin-lymphoma-with-delayed-enhancement-on-ct-and-mri
#5
Yukie Higuma, Ryo Yamauchi, Ritsuko Fujimitsu, Keiko Sakamoto, Yoshinobu Shinagawa, Ayako Morita, Hiroshi Urakawa, Morishige Takeshita, Kengo Yoshimitsu
Hepatic Hodgkin lymphoma is a rare disease, characterized by the presence of abundant granulofibrous stroma, and its radiological features have rarely been described. We report a 67-year-old man, who presented with liver masses that showed apparent delayed enhancement, along with systemic lymphadenopathy and musculoskeletal lesions. Repeated percutaneous needle biopsy, however, failed to confirm the diagnosis, and surgical biopsy finally revealed small amount of Hodgkin cells and Reed-Sternberg cells. In this report, the radiological features of hepatic Hodgkin lymphoma will be presented and discussed, in correlation with its histological findings...
March 2017: Radiology case reports
https://www.readbyqxmd.com/read/28182873/biomechanically-primed-liver-microtumor-array-as-a-high-throughput-mechanopharmacological-screening-platform-for-stroma-reprogrammed-combinatorial-therapy
#6
Lu Zhu, Xingliang Fan, Bingjie Wang, Longwei Liu, Xiaojun Yan, Lyu Zhou, Yang Zeng, Mark C Poznansky, Lili Wang, Huabiao Chen, Yanan Du
Recent breakthrough in stroma-reprogrammed combinatorial therapy (SRCT) for pancreatic tumor opens a new route for improving conventional chemotherapeutic efficacy, which utilizes VDR ligand to reprogram activated stromal cells in stiffened microenvironment, leading to reduced 'barrier effects' and increased tissue-infiltration of the chemotherapy drug. As a novel therapeutic strategy and mechanism of action, the progress of SRCT relies on tailored in vitro drug assessment platforms to further optimize its efficacy and extend to applications in other tumor types...
January 27, 2017: Biomaterials
https://www.readbyqxmd.com/read/28126348/autophagy-is-required-for-activation-of-pancreatic-stellate-cells-associated-with-pancreatic-cancer-progression-and-promotes-growth-of-pancreatic-tumors-in-mice
#7
Sho Endo, Kohei Nakata, Kenoki Ohuchida, Shin Takesue, Hiromichi Nakayama, Toshiya Abe, Kazuhiro Koikawa, Takashi Okumura, Masafumi Sada, Kohei Horioka, Biao Zheng, Yusuke Mizuuchi, Chika Iwamoto, Masaharu Murata, Taiki Moriyama, Yoshihiro Miyasaka, Takao Ohtsuka, Kazuhiro Mizumoto, Yoshinao Oda, Makoto Hashizume, Masafumi Nakamura
BACKGROUND & AIMS: Pancreatic stellate cells (PSCs) change from a quiescent to activated state in the tumor environment and secrete extracellular matrix (ECM) molecules and cytokines to increase the aggressiveness of tumors. However, it is not clear how PSCs are activated to produce these factors, or whether this process can be inhibited. PSCs have morphological and functional similarities to hepatic stellate cells, which undergo autophagy to promote fibrosis and tumor growth. We investigated whether autophagy activates PSCs, which promotes development of the tumor stroma and growth of pancreatic tumors in mice...
January 23, 2017: Gastroenterology
https://www.readbyqxmd.com/read/27843908/anterior-chamber-pathology-in-alagille-syndrome
#8
Derek K Ho, Alex V Levin, William V Anninger, David A Piccoli, Ralph C Eagle
BACKGROUND: Alagille syndrome is an autosomal dominant disorder characterized by neonatal cholestasis, characteristic facies, and cardiac abnormalities. Ocular abnormalities include posterior embryotoxon, mosaic pattern of iris stromal hypoplasia, microcornea, optic disc drusen, and pigmentary retinopathy. We present the second report of ocular pathology in two cases of Alagille syndrome. METHODS: Gross and histologic preparations of four eyes of two patients. RESULTS: Posterior embryotoxon is seen in both cases, with iris processes extending to the embryotoxon in case 1...
October 2016: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/27759456/morphological-characteristics-of-endometrium-in-patients-of-reproductive-age-with-viral-hepatitis-type-c
#9
T V Lisovskaya, G B Mal'gina, T A Perepletina, M A Chistyakov, I V Dan'kova, O A Melkozerova
AIM: The purpose of the study was to investigate the morphological features of endometrium in patients with viral hepatitis type C. MATERIALS AND METHODS: A morphological survey was conducted involving endometrium sections stained with hematoxylin and eosin and Van Gieson's picrofuchsin collected from 140 women of reproductive age, among them 70 patients were diagnosed with chronic hepatitis type C (CHC) infection with minimal (40 patients) and moderate activity (30 patients), and 70 women suffered from endometrial proliferative diseases without viral hepatitis (comparison group)...
October 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27679945/collagen-fibrinogen-and-thrombin-biological-addesive-is-effective-in-treating-experimental-liver-injuries
#10
Frederico Michelino DE Oliveira, Marcus Vinícius H DE Carvalho, Evaldo Marchi, Clóvis Antônio Lopes Pinto
OBJECTIVE: : to evaluate the effectiveness of a collagen-based adhesive associated with fibrinogen and thrombin in experimental liver injury in rats. METHODS: : the study included 30 Wistar rats randomly divided into three groups: A, B and C. All underwent standard liver traumatic injury. In group A the lesion was treated with the adhesive; in group B, with conventional absorbable suture; and in group C, there was no treatment. We analyzed the time of hemostasis, mortality, occurrence of adhesions and any histological changes...
July 2016: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/27673548/nonmucinous-biliary-epithelium-is-a-frequent-finding-and-is-often-the-predominant-epithelial-type-in-mucinous-cystic-neoplasms-of-the-pancreas-and-liver
#11
Kristen Zhelnin, Yue Xue, Brian Quigley, Michelle D Reid, Hyejeong Choi, Bahar Memis, Volkan Adsay, Alyssa M Krasinskas
Mucinous cystic neoplasms (MCNs) can occur in the pancreas and liver. Classically, these cystic lesions are lined by columnar mucinous epithelium with underlying ovarian-type stroma. It has been proposed that cysts with ovarian-type stroma and nonmucinous epithelium be considered separate entities in both the pancreas and liver. Using a series of 104 pancreatic and 32 hepatic cases, we aimed to further characterize the epithelium present in MCNs. Mucinous epithelium was defined as pancreatic intraepithelial neoplasia-like columnar cells with pale pink/clear apical mucin...
January 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/27660676/cholangiocarcinoma-gone-without-the-wnt
#12
EDITORIAL
Anne Tr Noll, Thorsten Cramer, Steven Wm Olde Damink, Frank G Schaap
Cholangiocarcinoma (CCA) is a relatively rare malignancy of the intra- or extra-hepatic bile ducts that is classified according to its anatomical localization as intrahepatic, perihilar or distal. Overall, CCA has a dismal prognosis due to typical presentation at an advanced irresectable stage, lack of effective non-surgical treatments, and a high rate of disease recurrence. CCA frequently arises on a background of chronic liver inflammation and cholestasis. Chronic inflammation is accompanied by enhanced cell turnover with generation of additional inflammatory stimuli, and a microenvironment rich in pro-inflammatory mediators and proliferative factors that enable accumulation of mutations, transformation and expansion of mutated cells...
September 18, 2016: World Journal of Hepatology
https://www.readbyqxmd.com/read/27658781/hepatitis-b-virus-x-protein-in-liver-tumor-microenvironment
#13
REVIEW
Sha Fu, Rong-Rong Zhou, Ning Li, Yan Huang, Xue-Gong Fan
Encoded by the hepatitis B virus, hepatitis B virus X protein (HBx) is a multifunctional, potentially oncogenic protein that acts primarily during the progression from chronic hepatitis B to cirrhosis and hepatocellular carcinoma (HCC). In recent decades, it has been established that chronic inflammation generates a tumor-supporting microenvironment. HCC is a typical chronic inflammation-related cancer, and inflammation is the main risk factor for HCC progression. The viral transactivator HBx plays a pivotal role in the initiation and maintenance of hepatic inflammatory processes through interactions with components of the tumor microenvironment including tumor cells and the surrounding peritumoral stroma...
September 23, 2016: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/27593937/hepatic-carcinoma-associated-fibroblasts-enhance-immune-suppression-by-facilitating-the-generation-of-myeloid-derived-suppressor-cells
#14
Y Deng, J Cheng, B Fu, W Liu, G Chen, Q Zhang, Y Yang
A major barrier to effective cancer immunotherapy is immune suppression in favor of tumor progression. Additionally, the accumulation of myeloid-derived suppressor cells (MDSCs) has recently been recognized as a major mechanism of the promotion of immune suppression. However, how MDSCs are induced and the cells from which they arise remains unknown. Although studies have demonstrated that tumor-derived cytokines promote MDSC accumulation and activation, little is known regarding the role of the tumor stroma in MDSC accumulation and activation...
February 23, 2017: Oncogene
https://www.readbyqxmd.com/read/27345000/repeated-hepatectomy-for-recurrent-intrahepatic-cholangiolocellular-carcinoma-report-of-a-case
#15
Mifuji Tomioku, Naoki Yazawa, Daisuke Furukawa, Hideki Izumi, Taro Mashiko, Soji Ozawa, Sotaro Sadahiro, Seiei Yasuda, Kenichi Hirabayashi, Toshio Nakagohri
The patient was a 59-year-old female. A liver tumor measuring 10 cm was found in the right hepatic lobe by medical examination of August, 2008 and she underwent extended right hepatectomy in September. Microscopically, the tumor was composed of small cuboidal cells possessing oval nuclei and resembling cholangiole. These formed small tubular structures with fibrous stroma. From a result of histopathological features, a diagnosis of a cholangiolocellular carcinoma was made. She received postoperative adjuvant chemotherapy with gemcitabine and S-1...
June 20, 2016: Tokai Journal of Experimental and Clinical Medicine
https://www.readbyqxmd.com/read/27325288/nck2-deficiency-in-mice-results-in-increased-adiposity-associated-with-adipocyte-hypertrophy-and-enhanced-adipogenesis
#16
Julie Dusseault, Bing Li, Nida Haider, Marie-Anne Goyette, Jean-François Côté, Louise Larose
Obesity results from an excessive expansion of white adipose tissue (WAT) from hypertrophy of preexisting adipocytes and enhancement of precursor differentiation into mature adipocytes. We report that Nck2-deficient mice display progressive increased adiposity associated with adipocyte hypertrophy. A negative relationship between the expression of Nck2 and WAT expansion was recapitulated in humans such that reduced Nck2 protein and mRNA levels in human visceral WAT significantly correlate with the degree of obesity...
September 2016: Diabetes
https://www.readbyqxmd.com/read/27275592/the-collagen-fibrinogen-and-thrombin-biological-adhesive-is-effective-in-treating-experimental-liver-injuries
#17
Frederico Michelino de Oliveira, Marcus Vinícius H de Carvalho, Evaldo Marchi, Clóvis Antônio Lopes Pinto
OBJECTIVE: to evaluate the effectiveness of an collagen-based adhesive associated with fibrinogen and thrombin in experimental liver injuries in rats. METHODS: we randomly divided 30 Wistar rats into three groups: A, B and C. All underwent a standard liver traumatic injury. In group A, the lesion was treated with the adhesive; in group B, with conventional, absorbable suture; group C received no treatment. We analyzed the time of hemostasis, mortality, occurrence of adhesions and any histological changes...
March 2016: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/27232289/laparoscopic-resection-of-a-hepatic-mucinous-cystic-neoplasm-a-case-report
#18
Shinsaku Obara, Takeo Nomi, Ichiro Yamato, Daisuke Hokuto, Satoshi Yasuda, Satoshi Nishiwada, Chihiro Kawaguchi, Takahiro Yoshikawa, Takatsugu Yamada, Hiromichi Kanehiro, Yoshiyuki Nakajima
INTRODUCTION: We aimed to present a case of hepatic mucinous cystic neoplasm (MCN-H) that was completely resected by laparoscopy. PRESENTATION OF CASE: A 47-year-old female exhibited mild elevation of serum liver enzyme levels. Abdominal computed tomography revealed a 45-mm multilocular cystic tumor in segment IV of the liver, along with intermittent border calcification and minimal wall thickness. Magnetic resonance imaging revealed fluid-to-fluid level in the cystic tumor, thereby increasing the suspicion of a mild hemorrhage...
2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27074919/hypoxia-enhances-tumor-stroma-crosstalk-that-drives-the-progression-of-hepatocellular-carcinoma
#19
Yuri Cho, Eun Ju Cho, Jeong-Hoon Lee, Su Jong Yu, Yoon Jun Kim, Chung Yong Kim, Jung-Hwan Yoon
BACKGROUND: Crosstalk between tumor cells and their microenvironment plays a crucial role in the progression of hepatocellular carcinoma (HCC). Hypoxia, a common feature of advanced HCC, has been shown to modulate the evolution of the tumor microenvironment. In this study, we investigated the effect of hypoxia on tumor-stroma crosstalk in HCC. METHODS: Human HCC cell lines (Huh-BAT, SNU-475) were cocultured with an activated human hepatic stellate cell line (HSCs; LX-2) under either normoxic or hypoxic conditions...
September 2016: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/26970079/hedgehog-regulates-yes-associated-protein-1-in-regenerating-mouse-liver
#20
Marzena Swiderska-Syn, Guanhua Xie, Gregory A Michelotti, Mark L Jewell, Richard T Premont, Wing-Kin Syn, Anna Mae Diehl
UNLABELLED: Adult liver regeneration requires induction and suppression of proliferative activity in multiple types of liver cells. The mechanisms that orchestrate the global changes in gene expression that are required for proliferative activity to change within individual liver cells, and that coordinate proliferative activity among different types of liver cells, are not well understood. Morphogenic signaling pathways that are active during fetal development, including Hedgehog and Hippo/Yes-associated protein 1 (Yap1), regulate liver regeneration in adulthood...
July 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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