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Eleonora Bassino, Edoardo Vallariello, Franco Gasparri, Luca Munaron
The biological importance of circulatory blood supply and angiogenesis for hair growth is now well recognized, but the their regulatory mechanisms require more mechanistic investigation. In vitro cocultures and tricultures can be successfully employed to greatly improve our knowledge on paracrine crosstalk between cell types that populate the dermal-epidermal interface and cutaneous vasculature. Here we report that human dermal fibroblasts (NHDF) promote viability and proliferation of microvascular endothelial cells (HMVEC), while HMVEC are not mitogenic for NHDF...
October 20, 2016: Journal of Cellular Physiology
Qi Cao, Zheng-Dao Mao, Yu-Jia Shi, Yi Chen, Yun Sun, Qian Zhang, Lei Song, Li-Ping Peng
OBJECTIVE: To investigate the effects of microRNA-7 (miR-7) on the proliferation, migration and invasion of non-small cell lung cancer NSCLC) cells by targeting FAK through ERK/MAPK signaling pathway. METHODS: NSCLC tissues and adjacent normal tissues were obtained from 160 NSCLC patients after operation. NSCLC cell lines (A549, H1299 and H1355) and a normal human fetal lung fibroblast cell line (MRC-5) were obtained. NSCLC cells were assigned into miR-7 inhibitors, miR-7 mimics, blank, miR-7 mimics control, miR-7 inhibitors control, FAK siRNA and miR-7 inhibitors + FAK siRNA groups...
October 15, 2016: Oncotarget
Hye Seon Kang, Chin Kook Rhee, Hea Yon Lee, Hyoung Kyu Yoon, Soon Seok Kwon, Sook Young Lee
Background/Aims: Inhaled corticosteroids are the most effective treatment currently available for asthma, but their beneficial effect against airway remodeling is limited. The tyrosine kinase inhibitor nilotinib has inhibitory activity against c-kit and the platelet-derived growth factor receptor. We compared the effects of fluticasone and nilotinib on airway remodeling in a chronic asthma model. We also examined whether co-treatment with nilotinib and fluticasone had any synergistic effect in preventing airway remodeling...
October 20, 2016: Korean Journal of Internal Medicine
Al Shaimaa Hasan, Lan Luo, Chen Yan, Tian-Xia Zhang, Yoshishige Urata, Shinji Goto, Safwat A Mangoura, Mahmoud H Abdel-Raheem, Shouhua Zhang, Tao-Sheng Li
Cardiosphere-derived cells (CDCs), one of the promising stem cell sources for myocardial repair, have been tested in clinical trials and resulted in beneficial effects; however, the relevant mechanisms are not fully understood. In this study, we examined the hypothesis that CDCs favor heart repair by switching the macrophages from a pro-inflammatory phenotype (M1) into a regulatory anti-inflammatory phenotype (M2). Macrophages from mice were cultured with CDCs-conditioned medium or with fibroblasts-conditioned medium as a control...
2016: PloS One
Masayuki Sano, Minoru Iijima, Manami Ohtaka, Mahito Nakanishi
Tissue-specific control of gene expression is an invaluable tool for studying various biological processes and medical applications. Efficient regulatory systems have been utilized to control transgene expression in various types of DNA viral or integrating viral vectors. However, existing regulatory systems are difficult to transfer into negative-strand RNA virus vector platforms because of significant differences in their transcriptional machineries. In this study, we developed a novel strategy for regulating transgene expression mediated by a cytoplasmic RNA vector based on a replication-defective and persistent Sendai virus (SeVdp)...
2016: PloS One
Javier A Longoria, Miwa Fujiwara, Catalina Guerra, Jeffrey L Lee, Catherine S H Sassoon, Farhad Mazdisnian
BACKGROUND: Expiratory central airway collapse is an increasingly recognized abnormality of the central airways and may be present in as many as 22% of patients evaluated for chronic obstructive pulmonary disease and/or asthma. Many current treatment options require invasive procedures that have been shown to cause significant morbidity and mortality. To test the hypothesis that Teflon injection will induce sufficient fibroblast proliferation and collagen deposition, we evaluated the time course on the effect of Teflon injection in the posterior membranous trachea on the histopathology of the tracheobronchial tree...
October 2016: Journal of Bronchology & Interventional Pulmonology
Mădălina-Anca Lazar, Horaţiu Rotaru, Ioana Bâldea, Adina B Boşca, Cristian P Berce, Cristina Prejmerean, Doina Prodan, Radu S Câmpian
This study aims to assess the biocompatibility of new advanced fiber-reinforced composites (FRC) to be used for custom-made cranial implants. Four new formulations of FRC were obtained using polymeric matrices (combinations of monomers bisphenol A glycidylmethacrylate [bis-GMA], urethane dimethacrylate [UDMA], triethylene glycol dimethacrylate [TEGDMA], hydroxyethyl methacrylate [HEMA]) and E-glass fibers (300 g/mp). Every FRC contains 65% E-glass and 35% polymeric matrix. Composition of polymeric matrices are: bis-GMA (21%), TEGDMA (14%) for FRC1; bis-GMA (21%), HEMA (14%) for FRC2; bis-GMA (3...
October 2016: Journal of Craniofacial Surgery
Alice C Wyse-Jackson, Sarah L Roche, Ana M Ruiz-Lopez, Jennifer N Moloney, Ashleigh M Byrne, Thomas G Cotter
Retinitis pigmentosa (RP) is a degenerative retinal disease leading to photoreceptor cell loss. In 2011, our group identified the synthetic progesterone 'Norgestrel' as a potential treatment for RP. Subsequent research showed Norgestrel to work through progesterone receptor membrane component 1 (PGRMC1) activation and upregulation of neuroprotective basic fibroblast growth factor (bFGF). Using trophic factor deprivation of 661W photoreceptor-like cells, we aimed to further elucidate the mechanism leading to Norgestrel-induced neuroprotection...
October 20, 2016: European Journal of Neuroscience
Xin Gu, Bingjie Gu, Xianhui Lv, Zhenzhen Yu, Rong Wang, Xiaoli Zhou, Wanxin Qiao, Zhiyuan Mao, Guoping Zuo, Qing Li, Dengshun Miao, Jianliang Jin
Impaired apoptosis of fibroblast-like synoviocytes (FLSs) causes synovial hyperplasia, facilitating destruction of cartilage and bone in rheumatoid arthritis (RA). Tumor necrosis factor (TNF)-α, a dominant inflammatory mediator in RA pathogenesis, promotes progression of RA symptoms. Prevalence of 1, 25-dihydroxy-vitamin D3 (hereafter termed VD) deficiency is 30-63% in patients with RA. Whether VD leads to apoptosis or enhances TNF-α-mediated apoptosis in FLSs to ameliorate RA is unclear. To determine this, 10-week-old CYP27B1-deficient (CYP27B1(-/-)) mice with collagen-induced arthritis (CIA) were intraperitoneally treated with 1 μg/kg VD every other day for 9 weeks...
October 20, 2016: Cell Death & Disease
Mi Yu, Jun Young Lee
BACKGROUND: Polydeoxyribonucleotide (PDRN) is an active compound that can promote wound healing. PDRN stimulates wound healing by enhancing angiogenesis and increasing fibroblast growth rates. Laser skin resurfacing is a popular cosmetic procedure for skin rejuvenation. Despite excellent improvement of photo-damaged skin and acne scarring, it is accompanied with drawbacks, such as prolonged erythema and crusting. OBJECTIVE: This study was designed to assess the effect of PDRN on wounds induced by fractional laser resurfacing...
October 20, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
Sylwia Szotek, Joanna Dawidowicz, Brian Eyden, Natalia Matysiak, Aleksander Czogalla, Grzegorz Dudzik, Anna Leśniewicz, Krzysztof Maksymowicz
Fascia lata is an important element of the fascial system, which forms the continuum of connective tissue throughout the body. This deep fascia envelops the entire thigh and hip area and its main function is to transmit mechanical forces generated by the musculoskeletal system of the lower extremities. Fascia lata is also known as a useful and easily harvested graft material. Despite its crucial role in lower extremity biomechanics and wide-ranging applications in plastic and reconstructive surgery, both the structure of fascia lata and particularly the cells populating this tissue are relatively unexplored and therefore poorly understood...
October 20, 2016: Ultrastructural Pathology
M Kumorek, D Kubies, T Riedel
Understanding the behavior of single proteins at the polyelectrolyte multilayer film/solution interface is of prime importance for the designing of bio-functionalized surface coatings. In the present paper, we study the adsorption of the model proteins, albumin and lysozyme, as well as basic fibroblast growth factor (FGF-2) on a polysaccharide multilayer film composed of quaternized chitosan and heparin. Several analytical methods were used to describe the formation of the polysaccharide film and its interactions with the proteins...
October 20, 2016: Physiological Research
Shanshan Guo, Xiaoying Zhu, Min Li, Liya Shi, June Lay Ting Ong, Dominik Jańczewski, Koon Gee Neoh
Surface charge and wettability, the two prominent physical factors governing protein adsorption and cell adhesion, have been extensively investigated in the literature. However, a comparison between these driving forces in terms of their independent and cooperative effects in affecting adhesion is rarely explored on a systematic and quantitative level. Herein, we formulate a protocol which features two-dimensional control over both surface charge and wettability with limited cross parameter influence. This strategy is implemented by controlling both the polyion charge density in the layer-by-layer (LbL) assembly process and the polyion side chain chemical structures...
October 20, 2016: ACS Applied Materials & Interfaces
Leonardo Romorini, Ximena Garate, Gabriel Neiman, Carlos Luzzani, Verónica Alejandra Furmento, Alejandra Sonia Guberman, Gustavo Emilio Sevlever, María Elida Scassa, Santiago Gabriel Miriuka
Human embryonic and induced pluripotent stem cells are self-renewing pluripotent stem cells (PSC) that can differentiate into a wide range of specialized cells. Basic fibroblast growth factor is essential for PSC survival, stemness and self-renewal. PI3K/AKT pathway regulates cell viability and apoptosis in many cell types. Although it has been demonstrated that PI3K/AKT activation by bFGF is relevant for PSC stemness maintenance its role on PSC survival remains elusive. In this study we explored the molecular mechanisms involved in the regulation of PSC survival by AKT...
October 20, 2016: Scientific Reports
Shinnosuke Ikemura, Nao Aramaki, Satoshi Fujii, Keisuke Kirita, Shigeki Umemura, Shingo Matsumoto, Kiyotaka Yoh, Seiji Niho, Hironobu Ohmatsu, Takeshi Kuwata, Motohiro Kojima, Atsushi Ochiai, Tomoko Betsuyaku, Masahiro Tsuboi, Koichi Goto, Genichiro Ishii
Metastasis and growth in neoplastic lesions requires the multi-step regulation of microenvironmental factors. We aimed to elucidate the microenvironmental changes in the process of lymphatic metastasis of lung squamous cell carcinoma. We examined the morphological characteristics of 102 cases of Primary Tumor (PT), 50 of intralymphatic tumor (ILT), 51 of lymph node (LN) micrometastasis (LN-Mic; less than 2 mm in size) and 82 of LN macrometastasis (LN-Mac; greater than 10 mm in size). Afterwards we evaluated the expression of nine molecules (EGFR, FGFR2, CD44, ALDH1, Podoplanin, E-cadherin, S100A4, geminin and ezrin) in matched PT, ILT, LN-Mic and LN-Mac from 23 of these cases...
October 20, 2016: Cancer Science
A Sangalli, G Malerba, G Tessari, M Rodolfo, M Gomez-Lira
No abstract text is available yet for this article.
October 20, 2016: Experimental Dermatology
Emily C Lumley, Acadia R Osborn, Jessica E Scott, Amanda G Scholl, Vicki Mercado, Young T McMahan, Zachary G Coffman, Jay L Brewster
The endoplasmic reticulum (ER) has the ability to signal organelle dysfunction via a complex signaling network known as the unfolded protein response (UPR). In this work, hamster fibroblast cells exhibiting moderate levels of ER stress were compared to those exhibiting severe ER stress. Inhibition of N-linked glycosylation was accomplished via a temperature-sensitive mutation in the Dad1 subunit of the oligosaccharyltransferase (OST) complex or by direct inhibition with tunicamycin (Tm). Temperature shift (TS) treatment generated weak activation of ER stress signaling when compared to doses of Tm that are typically used in ER stress studies (500-1000 nM)...
October 20, 2016: Cell Stress & Chaperones
Francesca Bianchini, Silvia Peppicelli, Pierangelo Fabbrizzi, Alessio Biagioni, Benedetta Mazzanti, Gloria Menchi, Lido Calorini, Alberto Pupi, Andrea Trabocchi
Fibrosis is the dramatic consequence of a dysregulated reparative process in which activated fibroblasts (myofibroblasts) and Transforming Growth Factor β1 (TGFβ1) play a central role. When exposed to TGFβ1, fibroblast and epithelial cells differentiate in myofibroblasts; in addition, endothelial cells may undergo endothelial-to-mesenchymal transition (EndoMT) and actively participate to the progression of fibrosis. Recently, the role of αv integrins, which recognize the Arg-Gly-Asp (RGD) tripeptide, in the release and signal transduction activation of TGFβ1 became evident...
October 19, 2016: Molecular and Cellular Biochemistry
Avadhesh Kumar, Shalini Kaushal, Neelu Verma, Deepti Chandra
The treatment of gingival recession defects is indicated for esthetic and functional reasons to reduce root sensitivity, to remove muscle pull, to create or augment keratinized tissue, and to prevent disease progression. The presence of sufficient amount of periosteum adjacent to gingival recession defects makes it a suitable graft. The adult human periosteum is a highly vascular connective tissue with immense regenerative potential. It contains fibroblasts, osteogenic progenitor cells, and stem cells as a result of which it has the ability to differentiate into fibroblast, osteoblast, chondrocytes, adipocytes, and skeletal myocytes...
September 2016: Journal of Oral Biology and Craniofacial Research
Priyanka Prajapati, Daniel W Lambert
No abstract text is available yet for this article.
September 2016: Journal of Bone Oncology
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