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https://www.readbyqxmd.com/read/28722233/cooperative-interaction-of-hepatocyte-growth-factor-and-neuregulin-regulates-schwann-cell-migration-and-proliferation-through-grb2-associated-binder-2-in-peripheral-nerve-repair
#1
Yoon Kyoung Shin, So Young Jang, Seoug Hoon Yun, Yun Young Choi, Byeol-A Yoon, Young Rae Jo, So Young Park, Min Gyoung Pak, Joo In Park, Hwan Tae Park
The sequential reactive changes in Schwann cell phenotypes in transected peripheral nerves, including dedifferentiation, proliferation and migration, are essential for nerve repair. Even though the injury-induced migratory and proliferative behaviors of Schwann cells resemble epithelial and mesenchymal transition (EMT) in tumors, the molecular mechanisms underlying this phenotypic change of Schwann cells are still unclear. Here we show that the reactive Schwann cells exhibit migratory features dependent on the expression of a scaffolding oncoprotein Grb2-associated binder-2 (Gab2), which was transcriptionally induced by neuregulin 1-ErbB2 signaling following nerve injury...
July 19, 2017: Glia
https://www.readbyqxmd.com/read/28719466/dedifferentiated-liposarcoma-with-epithelioid-epithelial-features
#2
Naohiro Makise, Akihiko Yoshida, Motokiyo Komiyama, Fumihiko Nakatani, Kan Yonemori, Akira Kawai, Masashi Fukayama, Nobuyoshi Hiraoka
Dedifferentiated liposarcoma (DDLPS) demonstrates a variety of growth patterns, and their histologic resemblance to other spindle cell mesenchymal tumors has been widely recognized. However, epithelioid morphology in DDLPS has only rarely been documented. Here, we report 6 cases of DDLPS with striking epithelioid/epithelial features. The patients were 5 men and 1 woman with a median age of 61 years. All tumors were located in the internal trunk. During follow-up of 1 to 41 months, local recurrence, distant metastases, and tumor-related death occurred in 4, 2, and 4 patients, respectively...
July 17, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28717251/transdifferentiated-human-vascular-smooth-muscle-cells-are-a-new-potential-cell-source-for-endothelial-regeneration
#3
Xuechong Hong, Andriana Margariti, Alexandra Le Bras, Laureen Jacquet, Wei Kong, Yanhua Hu, Qingbo Xu
Endothelial dysfunction is widely implicated in cardiovascular pathological changes and development of vascular disease. In view of the fact that the spontaneous endothelial cell (EC) regeneration is a slow and insufficient process, it is of great interest to explore alternative cell sources capable of generating functional ECs. Vascular smooth muscle cell (SMC) composes the majority of the vascular wall and retains phenotypic plasticity in response to various stimuli. The aim of this study is to test the feasibility of the conversion of SMC into functional EC through the use of reprogramming factors...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28707679/anaplastic-thyroid-carcinoma-from-clinicopathology-to-genetics-and-advanced-therapies
#4
REVIEW
Eleonora Molinaro, Cristina Romei, Agnese Biagini, Elena Sabini, Laura Agate, Salvatore Mazzeo, Gabriele Materazzi, Stefano Sellari-Franceschini, Alessandro Ribechini, Liborio Torregrossa, Fulvio Basolo, Paolo Vitti, Rossella Elisei
Anaplastic thyroid carcinoma (ATC) is a rare malignancy, accounting for 1-2% of all thyroid cancers. Although rare, ATC accounts for the majority of deaths from thyroid carcinoma. ATC often originates in a pre-existing thyroid cancer lesion, as suggested by the simultaneous presence of areas of differentiated or poorly differentiated thyroid carcinoma. ATC is characterized by the accumulation of several oncogenic alterations, and studies have shown that an increased number of oncogenic alterations equates to an increased level of dedifferentiation and aggressiveness...
July 14, 2017: Nature Reviews. Endocrinology
https://www.readbyqxmd.com/read/28707566/mediastinal-dedifferentiated-liposarcoma
#5
Francesco Sbrana, Clara Ugolini, Claudia Taddei, Greta Alì, Emilio Maria Pasanisi
No abstract text is available yet for this article.
July 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28706394/proximal-epithelioid-sarcomatous-dedifferentiation-in-secondary-chondrosarcoma-in-a-known-case-of-multiple-osteochondromatosis
#6
Biswajit Dey, Mangesh Chikhale, Prita Pradhan, Adarsh Barwad, Bhawana Ashok Badhe
Osteochondroma is the most common benign bone tumor. Approximately 15% of osteochondromas occur as multiple lesions. Multiple osteochondromatosis has a higher risk of developing chondrosarcomas, which are of low grade with good prognosis. About 10% of all chondrosarcomas may undergo dedifferentiated change, which has a poorer prognosis. Dedifferentiated peripheral chondrosarcoma developing within an osteochondroma is extremely rare. Dedifferentiation usually occurs in the form of osteosarcoma, malignant fibrous histiocytoma, fibrosarcoma, or rhabdomyosarcoma...
July 2017: Journal of Laboratory Physicians
https://www.readbyqxmd.com/read/28705709/a-novel-sclerosing-atypical-lipomatous-tumor-well-differentiated-liposarcoma-in-a-7-year-old-girl-report-of-a-case-with-molecular-confirmation
#7
Ran Peng, Huijiao Chen, Xuantao Yang, Xianliang Zhang, Zhang Zhang, Xin He, Hongying Zhang
Atypical lipomatous tumor/well-differentiated liposarcoma/dedifferentiated liposarcoma (ALT/WDL/DDL) is a common type of liposarcoma in late adulthood. However, pediatric ALT/WDL/DDL is extremely rare, and only 3 cases have been described in children younger than 10years of age. Notably, none of these cases harbored MDM2 gene amplification. Here, we reported a sclerosing ALT/WDL in a 7-year-old Chinese girl. Histologically, in most areas, the neoplastic cells were embedded within the collagenous background and typical lipogenic areas were inconspicuous throughout the sclerotic areas...
July 10, 2017: Human Pathology
https://www.readbyqxmd.com/read/28700422/cervical-squamous-carcinomas-with-prominent-acantholysis-and-areas-resembling-breast-lobular-carcinoma-an-aggressive-form-of-dedifferentation
#8
Kerry Scott, Gareth Bryson, Jackie Jamison, Michael Coutts, W Glenn McCluggage
There have been occasional reports of primary cervical adenocarcinoma with areas of dedifferentiation resulting in morphologic mimicry of breast lobular carcinoma. We describe 4 cases of primary cervical squamous carcinoma with prominent acantholysis (3 cases), areas resembling breast lobular carcinoma (3 cases) or both (2 cases). All 4 tumors showed positivity with p63 and CK5/6 and 3 of 4 exhibited block-type immunoreactivity with p16. Two of the 4 cases contained high-risk human papillomavirus (types 16 and 18) on molecular testing; of the 2 cases which were human papillomavirus negative, 1 exhibited patchy nonblock immunoreactivity with p16...
July 11, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28699206/kiaa1199-a-novel-regulator-of-mek-erk-induced-schwann-cell-dedifferentiation
#9
Angélique Boerboom, Céline Reusch, Alexandra Pieltain, Alain Chariot, Rachelle Franzen
The molecular mechanisms that regulate Schwann cell (SC) plasticity and the role of the Nrg1/ErbB-induced MEK1/ERK1/2 signalling pathway in SC dedifferentiation or in myelination remain unclear. It is currently believed that different levels of MEK1/ERK1/2 activation define the state of SC differentiation. Thus, the identification of new regulators of MEK1/ERK1/2 signalling could help to decipher the context-specific aspects driving the effects of this pathway on SC plasticity. In this perspective, we have investigated the potential role of KIAA1199, a protein that promotes ErbB and MEK1/ERK1/2 signalling in cancer cells, in SC plasticity...
July 12, 2017: Glia
https://www.readbyqxmd.com/read/28698260/phospholipase-c%C3%AE-1-mediates-intima-formation-through-akt-notch1-signaling-independent-of-the-phospholipase-activity
#10
Dongyang Jiang, Jianhui Zhuang, Wenhui Peng, Yuyan Lu, Hao Liu, Qian Zhao, Chen Chi, Xiankai Li, Guofu Zhu, Xiangbin Xu, Chen Yan, Yawei Xu, Junbo Ge, Jinjiang Pang
BACKGROUND: Vascular smooth muscle cell proliferation, migration, and dedifferentiation are critical for vascular diseases. Recently, it was demonstrated that Notch receptors have opposing effects on intima formation after vessel injury. Therefore, it is important to investigate the specific regulatory pathways that activate the different Notch receptors. METHODS AND RESULTS: There was a time- and dose-dependent activation of Notch1 by angiotensin II and platelet-derived growth factor in vascular smooth muscle cells...
July 11, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28694419/-a-case-of-dedifferentiated-liposarcoma-of-the-spermatic-cord
#11
Naoto Hodotsuka, Kaoru Nemoto, Masato Yanagi, Takumi Hasegawa, Yukihiro Kondo
A 63-year-old man was referred to our department because of painless hard mass in the right inguinal region. Abdominal computed tomography (CT) showed right spermatic cord mass measuring 25 mm in diameter. We performed right high orchiectomy. Histopathological diagnosis was dedifferentiated liposarcoma, which included myofibroblast components. He was alive 3 years postoperatively without recurrence.
June 2017: Hinyokika Kiyo. Acta Urologica Japonica
https://www.readbyqxmd.com/read/28688023/-pet-ct-and-pet-mri-of-the-prostate-from-18-f-fdg-to-68-ga-psma
#12
REVIEW
K Knorr, M Eiber, T Maurer, H-J Wester, K Scheidhauer
CLINICAL/METHODICAL ISSUE: In the last few years nuclear medical diagnostics have experienced a unprecedented renaissance in the diagnostics of prostate cancer, due to the availability of hybrid imaging with positron emission tomography computed tomography (PET/CT), PET magnetic resonance imaging (PET/MRI) and single photon emission computed tomography (SPECT) CT as well as the development of prostate-specific radiopharmaceuticals. METHODICAL INNOVATIONS: The use of fluorodeoxyglucose (FDG), which has been successfully implemented for many years in PET diagnostics, is only helpful in dedifferentiated tumors due to the biological characteristics of prostate cancer...
July 7, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28684892/the-adaptability-of-somatic-stem-cells-a-review
#13
REVIEW
Kenyon S Tweedell
Cell and tissue specific somatic stem cells develop as dynamic populations of precursor cells to discrete tissue and organ differentiation during embryonic and fetal stages and their potential evolves with development. Some of their progeny are sequestered into separate cell niches of tissues as adult somatic stem cells at various times during organ development and differentiation These are diverse cell populations of stem and progenitor cells that respond to homeostatic needs for cell and tissue maintenance and the cycling of differentiated cells for physiological/ endocrinological changes...
2017: Journal of Stem Cells & Regenerative Medicine
https://www.readbyqxmd.com/read/28676010/kca3-1-channel-modulators-as-potential-therapeutic-compounds-for-glioblastoma
#14
Brandon M Brown, Brandon Pressley, Heike Wulff
The intermediate-conductance Ca2+-activated K+ channel KCa3.1 is widely expressed in cells of the immune system such as T- and B-lymphocytes, mast cells, macrophages and microglia, but also found in dedifferentiated vascular smooth muscle cells, fibroblasts and many cancer cells including pancreatic, prostate, leukemia and glioblastoma. In all these cell types KCa3.1 plays an important role in cellular activation, migration and proliferation by regulating membrane potential and Ca2+ signaling. KCa3.1 therefore constitutes an attractive therapeutic target for diseases involving excessive proliferation or activation of one more of these cell types and researchers both in academia and in the pharmaceutical industry have developed several potent and selective small molecule inhibitors of KCa3...
June 30, 2017: Current Neuropharmacology
https://www.readbyqxmd.com/read/28672891/osteogenic-potency-of-dedifferentiated-fat-cells-isolated-from-elderly-people-with-osteoporosis
#15
Wei Hao, Chuanqiang Jiang, Ming Jiang, Tian Wang, Xin Wang
Mature adipocytes are the major cell type in adipose tissue. This study aimed to explore the osteogenic potency of dedifferentiated fat cells obtained from osteoporotic patients (opDFATs) in vitro and in vivo. Mature adipocytes and adipose-derived stem cells (opASCs) were harvested from subcutaneous adipose tissue. Mature adipocytes were dedifferentiated to produce opDFATs by the ceiling culture method. OpDFATs were osteogenically induced in vitro with opASCs as a control. Cell growth, alkaline phosphatase (ALPase) activity and cell mineralization were determined, and expression levels of osteogenesis-specific genes (collagen I, osteocalcin and bone sialoprotein) were analyzed using quantitative reverse transcription polymerase chain reaction...
July 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28672061/thalidomide-treatment-prevents-chronic-graft-rejection-after-aortic-transplantation-in-rats
#16
Katharine K Miller, Dong Wang, Xiaomeng Hu, Xiaoqin Hua, Tobias Deuse, Evgenios Neofytou, Thomas Renne, Joachim Velden, Hermann Reichenspurner, Sonja Schrepfer, Daniel Bernstein
BACKGROUND: Cardiac allograft vasculopathy (CAV) affects approximately 30% of cardiac transplant patients at five years post-transplantation. To date there are few CAV treatment or prevention options, none of which are highly effective. The aim of the study was to investigate the effect of thalidomide on the development of CAV. METHODS: The effect of thalidomide treatment on chronic rejection was assessed in rat orthotopic aortic transplants in allogeneic F344 or syngeneic Lew rats (n=6/group)...
July 3, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28670134/identification-of-key-genes-and-molecular-mechanisms-associated-with-dedifferentiated-liposarcoma-based-on-bioinformatic-methods
#17
Hongliang Yu, Dong Pei, Longyun Chen, Xiaoxiang Zhou, Haiwen Zhu
BACKGROUND: Dedifferentiated liposarcoma (DDLPS) is one of the most deadly types of soft tissue sarcoma. To date, there have been few studies dedicated to elucidating the molecular mechanisms behind the disease; therefore, the molecular mechanisms behind this malignancy remain largely unknown. MATERIALS AND METHODS: Microarray profiles of 46 DDLPS samples and nine normal fat controls were extracted from Gene Expression Omnibus (GEO). Quality control for these microarray profiles was performed before analysis...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28668397/interleukin-6-c-ebp-%C3%AE-and-ppar-%C3%AE-expression-correlates-with-intramuscular-liposarcoma-growth-in-mice-the-impact-of-voluntary-physical-activity-levels
#18
Mohamad Assi, Moussa Kenawi, Mickaël Ropars, Amélie Rébillard
IL-6 is an axial cytokine overexpressed in cancer to promote growth and increase resistance to anti-cancer therapies. As the application of IL-6-targeting therapies are still limited, alternative non-aggressive and adjuvant approaches, like physical activity (PA) could be useful to reverse IL-6 effects. To get more insights into liposarcoma (LS) pathophysiology, we investigated potential molecular links between IL-6 and LS growth and we tested the impact of PA on such mechanism in an orthotopic model of intramuscular LS...
June 28, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28667682/dedifferentiated-carcinoma-with-clear-cell-carcinoma-of-the-endometrium-a-case-report
#19
Seung Eun Lee, Ha Young Park, Seung-Hyuk Shim, Wook Youn Kim
Endometrial dedifferentiated carcinoma consists of a combination of undifferentiated and differentiated carcinomas. To date, clear cell carcinoma components in endometrial dedifferentiated carcinoma have not been reported. We report the first case of endometrial dedifferentiated carcinoma with clear cell carcinoma in a 58-year-old woman. The uterine corpus was completely replaced and enlarged by a heterogeneous mass. The endometrial cut surface showed a yellowish papillary growing mass involving endometrium and deeper myometrium...
June 30, 2017: Pathology International
https://www.readbyqxmd.com/read/28667462/the-evaluation-of-cartilage-differentiations-using-transforming-growth-factor-beta3-alone-and-with-combination-of-bone-morphogenetic-protein-6-on-adult-stem-cells
#20
C C Ude, H C Chen, M Y Norhamdan, B M Azizi, B S Aminuddin, B H I Ruszymah
In our quest to standardize our formula for a clinical trial, transforming growth factor-beta3 (TGF-β3) alone and in combination with bone morphogenetic protein-6 (BMP-6) were evaluated for their effectiveness in cartilage differentiation. Bone Marrow Stem Cells (BMSCs) and Adipose Derived Stem Cells (ADSCs) were induced to chondrogenic lineage using two different media. Native chondrocytes served as positive control. ADSCs and BMSCs proved multipotency by tri-lineage differentiations. ADSC has significantly higher growth kinetics compare to Chondrocyte only p ≤ 0...
June 30, 2017: Cell and Tissue Banking
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