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Yang Liu, Xiao-Hui Niu, Xiaomeng Yin, Yue-Jian Liu, Chao Han, Jie Yang, Xin Huang, Xiaohong Yu, Lianjun Gao, Yan-Zong Yang, Yun-Long Xia, Hui-Hua Li
BACKGROUND: In atrial fibrillation (AF), a more extensively fibrotic left atrium (LA) provides a substrate for arrhythmias and increases risk of relapse following ablation. Fibrocytes are bone marrow-derived circulating mesenchymal progenitors that have been identified in the atrium of patients with AF who have valvular diseases. The present study investigates the associations between circulating fibrocytes and LA fibrosis or the prevalence of recurrence after ablation in patients with persistent AF...
March 13, 2018: Journal of the American Heart Association
Luciana Lassance, Gustavo K Marino, Carla S Medeiros, Shanmugapriya Thangavadivel, Steven E Wilson
The aim of this study was to determine whether bone marrow-derived fibrocytes migrate into the cornea after stromal scar-producing injury and differentiate into alpha-smooth muscle actin (αSMA) + myofibroblasts. Chimeric mice expressing green fluorescent protein (GFP) bone marrow cells had fibrosis (haze)-generating irregular phototherapeutic keratectomy (PTK). Multiplex immunohistochemistry (IHC) for GFP and fibrocyte markers (CD34, CD45, and vimentin) was used to detect fibrocyte infiltration into the corneal stroma and the development of GFP+ αSMA + myofibroblasts...
February 23, 2018: Experimental Eye Research
Lei Hu, Nianan He, Lei Ye, Hangcheng Zhou, Wen Zhong, Xinshu Zhang
OBJECTIVES: This study evaluated the stiffness of tissue surrounding thyroid nodules using shear wave elastography (SWE). METHODS: A total of 128 thyroid nodules in 108 patients were examined with conventional ultrasound imaging and SWE. The maximum Young modulus value was measured to evaluate the stiffness of the thyroid nodules (E) and the 2-mm perinodular region (Eshell ). The number of thyroid fibrocytes was evaluated by Masson trichrome staining and image-processing software...
February 26, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
Valentina Sangiorgio, Vanna Zanagnolo, Giovanni Aletti, Luca Bocciolone, Simone Bruni, Fabio Landoni, Nicoletta Colombo, Angelo Maggioni, Enzo Ricciardi
Cervical sarcomas are rare neoplasms, accounting for <1% of all cervical malignancies and characterized by an aggressive course despite radical excision. We report the clinical and microscopic features of a spindle cell sarcoma arising as a polypoid endocervical mass in a 45-yr-old woman. The neoplasm was characterized by a monotonous, mildly atypical proliferation of spindle cells, displaying a fibrosarcoma-like parallel pattern of highly dense fascicles, growing under the cervical epithelium. Mitotic activity was conspicuous, with up to 40 mitoses per 10 HPF...
February 22, 2018: International Journal of Gynecological Pathology
Natalia V Nizyaeva, Tatiana V Sukhacheva, Roman A Serov, Galina V Kulikova, Marina N Nagovitsyna, Natalia E Kan, Victor L Tyutyunnik, Stanislav V Pavlovich, Rimma A Poltavtseva, Ekaterina L Yarotskaya, Aleksandr I Shchegolev, Gennadiy T Sukhikh
A new cell type, interstitial Cajal-like cell (ICLC), was recently described in different organs. The name was recently changed to telocytes (TCs), and their typical thin, long processes have been named telopodes (Tp). TCs regulate the contractile activity of smooth muscle cells and play a role in regulating vessel contractions. Although the placenta is not an innervated organ, we believe that TCs are present in the placenta. We studied placenta samples from physiological pregnancies and in different variants of preeclampsia (PE)...
February 22, 2018: Scientific Reports
K Griffiths, D M Habiel, J Jaffar, U Binder, W G Darby, C G Hosking, A Skerra, G P Westall, C M Hogaboam, M Foley
Idiopathic pulmonary fibrosis (IPF) is a chronic fibrotic lung disease that is prevalent in individuals >50 years of age, with a median survival of 3-5 years and limited therapeutic options. The disease is characterized by collagen deposition and remodeling of the lung parenchyma in a process that is thought to be driven by collagen-expressing immune and structural cells. The G-protein coupled C-X-C chemokine receptor 4, CXCR4, is a candidate therapeutic target for IPF owing to its role in the recruitment of CXCR4 + fibrocytes from the bone marrow to fibrotic lung tissue and its increased expression levels by structural cells in fibrotic lung tissue...
February 16, 2018: Scientific Reports
Atsuro Saijo, Hisatsugu Goto, Mayuri Nakano, Atsushi Mitsuhashi, Yoshinori Aono, Masaki Hanibuchi, Hirohisa Ogawa, Hisanori Uehara, Kazuya Kondo, Yasuhiko Nishioka
Cancer stem cells (CSCs) represent a minor population that have clonal tumor initiation and self-renewal capacity and are responsible for tumor initiation, metastasis, and therapeutic resistance. CSCs reside in niches, which are composed of diverse types of stromal cells and extracellular matrix components. These stromal cells regulate CSC-like properties by providing secreted factors or by physical contact. Fibrocytes are differentiated from bone marrow-derived CD14+ monocytes and have features of both macrophages and fibroblasts...
May 1, 2018: Cancer Letters
Agus Turchan, Taufiq Fatchur Rochman, Arie Ibrahim, Dyah Fauziah, Joni Wahyuhadi, M Arifin Parenrengi, Asra Al Fauzi, Erliano Sufarnap, Abdul Hafid Bajamal, Ferdiansyah, Heri Suroto, Purwati, Fedik Abdul Rantam, Adanti Wido Paramadini, Christianto Benjamin Lumenta
In the field of neurosurgery, often the dura mater cannot be sutured, and consequently, it requires a duraplasty procedure using a dural fascial graft. Since 1890, various materials have been researched as dura mater substitutes. Amniotic membrane, for example, is suitable as a dural graft material and has been used in neurosurgery since 2012. However, there has been little research on human patient's dural healing after the use of amniotic membrane in their duraplasty procedure. To address this gap, a clinical experimental study was undertaken to evaluate the human dural healing of 16 patients who had undergone duraplasty in decompressive craniectomy surgery at Dr...
February 7, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
Ahrar Khan, M Kashif Saleemi, Farah Ali, Muhammad Abubakar, Riaz Hussain, Rao Zahid Abbas, Imtiaz Ahmad Khan
Peste des petits ruminants (PPR), an economically important viral transboundary disease of small ruminants is not only prevalent in Pakistan but also in other countries where people rely on agriculture and animal products. The present study was aimed at describing the pathology and antigen localization in natural PPR infections in local (Kajli sheep; Beetal goats) as well as imported small ruminant breeds (Dorper sheep; Australian Boer goat). Morbidity and mortality rates were significantly (P < 0.001) higher in indigenous Kajli sheep (75...
February 7, 2018: Microbial Pathogenesis
Zile Singh Kundu, Rajeev Sen, Ankur Dhiman, Pankaj Sharma, Ramchander Siwach, Parveen Rana
Background: Giant cell tumor (GCT) of the bone is known for its locally aggressive behavior and tendency to recur. It is an admixture of rounded or spindle-shaped mononuclear neoplastic stromal cells and multinucleated osteoclast-like giant cells with their proportionate dispersion among the former. Zoledronic acid (a bisphosphonate) is being used in various cancers such as myelomas and metastasis, for osteoporosis with an aim to reduce the resorption of bone, and as an adjuvant treatment for the management of GCT of bone for reduction of local recurrence...
January 2018: Indian Journal of Orthopaedics
Chih-Hsing Hung, Chin-Chou Wang, Jau-Ling Suen, Chau-Chyun Sheu, Chang-Hung Kuo, Wei-Ting Liao, Yi-Hsin Yang, Chao-Chien Wu, Sum-Yee Leung, Ruay-Sheng Lai, Chi-Cheng Lin, Yu-Feng Wei, Chong-Yeh Lee, Ming-Shyan Huang, Shau-Ku Huang
CD14+ monocytes contain precursors for macrophages and fibrocytes, known to be involved in regulating airway remodeling in human asthma and distinguishable by the PM-2K marker. We sought to identify circulating subsets of PM-2K+ macrophage-like cells and evaluate their relationships to lung function, severity and control status. Circulating PM-2K+ macrophage-like cells and fibrocytes could be identified and distinguished between normal individuals (N = 152) and asthmatic subjects (N = 133) using multi-parametric flow cytometry...
January 17, 2018: Scientific Reports
Wenlin Tai, Jinyu Li, Boyang Zheng, Hanxin Wu, Jiawei Ding, Ling Gao, Zhaoxin Dong
The study was aimed to explore the functions of circulating fibrocytes (CFs) on injury repair in acute lung injury/acute respiratory distress syndrome (ALI/ARDS) mice model and its clinical value as a biomarker for ALI/ARDS. ALI/ARDS mice model was established by intratracheal instillation of lipopolysaccharide (LPS). Mononuclear cells were isolated from peripheral blood of ALI/ARDS model and flow cytometry was used to measure CFs defined as cells positive for CD45 and collagen-1. Histological changes of lung tissues were evaluated by H&E staining and Masson's trichrome staining...
January 11, 2018: Journal of Cellular Biochemistry
J Calvin Coffey, Miranda G Kiernan, Shaheel M Sahebally, Awad Jarrar, John P Burke, Patrick A Kiely, Bo Shen, David Waldron, Colin Peirce, Manus Moloney, Maeve Skelly, Paul Tibbitts, Hena Hidayat, Peter N Faul, Vourneen Healy, D Peter O Leary, Leon G Walsh, Peter Dockery, P Ronan O Connell, Sean Martin, Fergus Shanahan, Claudio Fiocchi, Colum Dunne
Background and Aims: Inclusion of the mesentery during resection for colorectal cancer is associated with improved outcomes but has yet to be evaluated in Crohn's disease. This study aimed to determine the rate of surgical recurrence after inclusion of mesentery during ileocolic resection for Crohn's disease. Methods: Surgical recurrence rates were compared between two cohorts. Cohort A (n=30) underwent conventional ileocolic resection where the mesentery was divided flush with the intestine...
January 4, 2018: Journal of Crohn's & Colitis
Jin-Nan Zhong, Lan Lan, Yi-Fei Chen, Ge Huang, Guang-Zhen He, Jiong Yang, Ya-Dong Gao
BACKGROUND: Circulating fibrocytes (CFs) have been shown to participate in subepithelial fibrosis of asthma with chronic airflow limitation by acting as an important source of fibroblasts deposited beneath airway epithelia. Serum amyloid P (SAP) is an innate inhibitor of fibrocytes differentiation. Store-operated Ca2+ entry (SOCE) is the major Ca2+ influx of non-excitable cells. In this study, the role of SOCE in the regulation of fibrocytes differentiation and the effects of Th2 cytokine IL-4 and SAP on SOCE of fibrocytes were investigated...
July 12, 2017: Pharmacological Reports: PR
Borna Mehrad, Marie D Burdick, Nancy J Wandersee, Kaushik S Shahir, Liyun Zhang, Pippa M Simpson, Robert M Strieter, Joshua J Field
Lung injury and fibrosis are common in patients with sickle cell disease (SCD). Fibrocytes, a population of circulating, bone marrow-derived cells, have been linked to development and progression of tissue fibrogenesis and have been implicated in the development of lung fibrosis in preclinical models of SCD. We tested the hypothesis that the levels and activation state of circulating fibrocytes during steady state are associated with abnormal pulmonary function in adults with SCD. In a prospective cohort of steady-state adults with SCD and healthy age- and race-matched control participants, we measured the concentration and activation state of circulating fibrocytes and assessed pulmonary phenotype with pulmonary function tests (PFTs), a respiratory questionnaire, 6-minute walk test, high-resolution chest computed tomography scan, and echocardiogram...
November 14, 2017: Blood Advances
Hisatsugu Goto, Yasuhiko Nishioka
An adequate blood supply is essential for cancer cells to survive and grow; thus, the concept of inhibiting tumor angiogenesis has been applied to cancer therapy, and several drugs are already in clinical use. It has been shown that treatment with those anti-angiogenic drugs improved the response rate and prolonged the survival of patients with various types of cancer; however, it is also true that the effect was mostly limited. Currently, the disappointing clinical results are explained by the existence of intrinsic or acquired resistance to the therapy mediated by both tumor cells and stromal cells...
December 29, 2017: International Journal of Molecular Sciences
Yang Li, Ying Sheng, Jian-Min Liang, Juan Hu, Xiao-Yong Ren, Yan Cheng
After intense sound exposure, the lack of obvious degeneration in type III fibrocytes suggests that they might protect themselves against acoustic trauma. However, it is unknown whether and how type III fibrocytes play this role in other cochlear damage models. In this study, we investigated the self-protection of type III fibrocytes against severe cochlear energy failure induced by local administration of 3-nitropropionic acid to the inner ear. We detected that the type III fibrocytes did not degenerate significantly after 500 mM 3-nitropropionic acid application, and showed increased expression of proliferation marker Ki67...
December 26, 2017: Neuroreport
Yi Yao, Zhongliang Zheng, Qibin Song
Radiation therapy is an important treatment modality for multiple thoracic malignancies. However, radiation-induced lung injury (RILI), which is the term generally used to describe damage to the lungs caused by exposure to ionizing radiation, remains a critical issue affecting both tumor control and patient quality of life. Despite tremendous effort, there is no current consensus regarding the optimal treatment approach for RILI. Because of a number of functional advantages, including self-proliferation, multi-differentiation, injury foci chemotaxis, anti-inflammation, and immunomodulation, mesenchymal stem cells (MSCs) have been a focus of research for many years...
February 2018: Thoracic Cancer
Wensheng Chen, Darrell Pilling, Richard H Gomer
PURPOSE: High levels of NaCl in the diet are associated with both cardiac and renal fibrosis, but whether salt intake affects pulmonary fibrosis has not been examined. AIM OF THE STUDY: To test the hypothesis that salt intake might affect pulmonary fibrosis. MATERIALS AND METHODS: Mice were fed low, normal, or high salt diets for 2 weeks, and then treated with oropharyngeal bleomycin to induce pulmonary fibrosis, or oropharyngeal saline as a control...
November 2017: Experimental Lung Research
Yuko Ishida, Akihiko Kimura, Mizuho Nosaka, Yumi Kuninaka, Hiroaki Hemmi, Izumi Sasaki, Tsuneyasu Kaisho, Naofumi Mukaida, Toshikazu Kondo
The potential role of macrophages in pulmonary fibrosis (PF) prompted us to evaluate the roles of CX3CR1, a chemokine receptor abundantly expressed in macrophages during bleomycin (BLM)-induced PF. Intratracheal BLM injection induced infiltration of leukocytes such as macrophages into the lungs, which eventually resulted in fibrosis. CX3CR1 expression was mainly detected in the majority of macrophages and in a small portion of α-smooth muscle actin-positive cells in the lungs, while CX3CL1 was expressed in macrophages...
December 4, 2017: Scientific Reports
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