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https://www.readbyqxmd.com/read/28214381/the-value-of-reflectance-confocal-microscopy-in-diagnosis-of-flat-pigmented-facial-lesions-a-prospective-study
#1
E Wurm, G Pellacani, C Longo, H P Soyer, S Gonzalez, R Hofmann-Wellenhof, V Ahlgrimm-Siess, P Guitera, C Sinz, H Kittler
BACKGROUND: Flat pigmented facial lesions are difficult to diagnose even with dermatoscopy. It is controversial how additional information obtained by in vivo reflectance confocal microscopy (RCM) impacts the diagnosis and management. OBJECTIVE: To examine what in vivo reflectance confocal microscopy of flat pigmented facial lesions adds to clinical examination using dermatoscopy including digital dermatoscopic monitoring. METHODS: We prospectively collected 70 cases of flat pigmented facial lesions and recorded diagnoses and management decisions by experts based on direct clinical examination aided by dermatoscopy including digital dermatoscopic monitoring and by remote experts who reviewed the corresponding confocal images...
February 18, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28214201/up-regulation-of-pim-3-in-chronic-obstructive-pulmonary-disease-copd-patients-and-its-potential-therapeutic-role-in-copd-rat-modeling
#2
Cheng Yang, Li Li, Junhua Guo, Weiqiang Zhang, Wenbiao Zhu, Xinhui Rao, Wenjie Huang
BACKGROUND: Pim-3 belongs to the PIM kinase family and plays an important role in promoting inflammation, which is essential in the pathogenesis of Chronic Obstructive Pulmonary Disease (COPD). METHODS: Immunohistochemistry (IHC), western blot, and RT-PCR analyses were performed to assess the expression of Pim-3 in both COPD and healthy lung tissue samples. SMA (Smooth Muscle Actin) and Cyclin D1 expression were detected by IHC. We also constructed animal models for the control, COPD, and Pim-3 inhibition groups, in order to analyze the effects of Pim-3 inhibition on COPD, and the role of Pim-3 in the p38 pathway...
January 29, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28214042/erosive-pustular-dermatosis-of-the-scalp-clinical-trichoscopic-and-histopathologic-features-of-20-cases
#3
Michela Starace, Camilla Loi, Francesca Bruni, Aurora Alessandrini, Cosimo Misciali, Annalisa Patrizi, Bianca Maria Piraccini
BACKGROUND: Erosive pustular dermatosis of the scalp is a chronic eruption that leads to scarring alopecia. OBJECTIVE: The clinical, dermoscopic, and histopathological features and the course of the disease in 20 patients were reviewed and compared with the reports in the literature. METHODS: Gender, age at diagnosis, age at onset, duration, topography, predisposing factors, concomitant diseases, trichoscopy, histology, treatment, and outcome were taken into consideration...
February 14, 2017: Journal of the American Academy of Dermatology
https://www.readbyqxmd.com/read/28213896/filaggrin-loss-of-function-mutations-atopic-dermatitis-and-risk-of-actinic-keratosis-results-from-two-cross-sectional-studies
#4
Y M F Andersen, A Egeberg, E Balslev, C L T Jørgensen, P B Szecsi, S Stender, J Kaae, A Linneberg, G Gislason, L Skov, P M Elias, J P Thyssen
BACKGROUND: Common loss-of-function mutations in filaggrin gene (FLG) represent a strong genetic risk factor for atopic dermatitis (AD). Homozygous mutation carriers typically display ichthyosis vulgaris (IV) and many have concomitant AD. Previously, homozygous, but not heterozygous, filaggrin gene mutations have been associated with squamous cell carcinomas. OBJECTIVE: The first objective was to examine the association between FLG mutations and actinic keratosis (AK)...
February 18, 2017: Journal of the European Academy of Dermatology and Venereology: JEADV
https://www.readbyqxmd.com/read/28213831/a-phenomenological-cohesive-model-for-the-macroscopic-simulation-of-cell-matrix-adhesions
#5
M Cóndor, J M García-Aznar
Cell adhesion is crucial for cells to not only physically interact with each other but also sense their microenvironment and respond accordingly. In fact, adherent cells can generate physical forces that are transmitted to the surrounding matrix, regulating the formation of cell-matrix adhesions. The main purpose of this work is to develop a computational model to simulate the dynamics of cell-matrix adhesions through a cohesive formulation within the framework of the finite element method and based on the principles of continuum damage mechanics...
February 17, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/28213314/emerging-themes-of-regulation-at-the-golgi
#6
REVIEW
Stefanie L Makowski, Thuy Tt Tran, Seth J Field
The Golgi is generally recognized for its central role in the secretory pathway to orchestrate protein post-translational modification and trafficking of proteins and lipids to their final destination. Despite the common view of the Golgi as an inert sorting organelle, emerging data demonstrate that important signaling events occur at the Golgi, including those that regulate the trafficking function of the Golgi. The phosphatidylinositol-4-phosphate/GOLPH3/MYO18A/F-actin complex serves as a hub for signals that regulate Golgi trafficking function...
February 14, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/28212799/rho-mancing-to-sensitize-calcium-signaling-for-contraction-in-the-vasculature-role-of-rho-kinase
#7
T Szasz, R C Webb
Vascular smooth muscle contraction is an important physiological process contributing to cardiovascular homeostasis. The principal determinant of smooth muscle contraction is the intracellular free Ca(2+) concentration, and phosphorylation of myosin light chain (MLC) by activated myosin light chain kinase (MLCK) in response to increased Ca(2+) is the main pathway by which vasoconstrictor stimuli induce crossbridge cycling of myosin and actin filaments. A secondary pathway for vascular smooth muscle contraction that is not directly dependent on Ca(2+) concentration, but rather mediating Ca(2+) sensitization, is the RhoA/Rho kinase pathway...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28212798/protein-kinase-c-as-regulator-of-vascular-smooth-muscle-function-and-potential-target-in-vascular-disorders
#8
H C Ringvold, R A Khalil
Vascular smooth muscle (VSM) plays an important role in maintaining vascular tone. In addition to Ca(2+)-dependent myosin light chain (MLC) phosphorylation, protein kinase C (PKC) is a major regulator of VSM function. PKC is a family of conventional Ca(2+)-dependent α, β, and γ, novel Ca(2+)-independent δ, ɛ, θ, and η, and atypical ξ, and ι/λ isoforms. Inactive PKC is mainly cytosolic, and upon activation it undergoes phosphorylation, maturation, and translocation to the surface membrane, the nucleus, endoplasmic reticulum, and other cell organelles; a process facilitated by scaffold proteins such as RACKs...
2017: Advances in Pharmacology
https://www.readbyqxmd.com/read/28211204/evaluation-of-the-enhanced-permeability-and-retention-effect-in-the-early-stages-of-lymph-node-metastasis
#9
Mamoru Mikada, Ariunbuyan Sukhbaatar, Yoshinobu Miura, Sachiko Horie, Maya Sakamoto, Shiro Mori, Tetsuya Kodama
Most solid cancers spread to new sites via the lymphatics before hematogenous dissemination. However, only a small fraction of an intravenously administered anti-cancer drug enters the lymphatic system to reach metastatic lymph nodes (LNs). Here, we show that the enhanced permeability and retention (EPR) effect is not induced during the early stages of LN metastasis. Luciferase-expressing tumor cells were injected into the subiliac LN of the MXH10/Mo-lpr/lpr mouse to induce metastasis to the proper axillary LN (PALN)...
February 17, 2017: Cancer Science
https://www.readbyqxmd.com/read/28211039/cutaneous-squamous-cell-carcinoma-an-epidemiological-review
#10
REVIEW
A C Green, C M Olsen
Cutaneous squamous cell carcinoma (SCC) is a common cancer in white populations and its disease burden is often substantially underestimated. SCC occurs more often in men than women and increases dramatically with age; those affected often develop multiple primaries over time, which increases the burden. The main external cause is solar ultraviolet radiation (UVR), with immunosuppression being the other established risk factor, shown by the high SCC rates in organ transplant recipients. Sunbed use and certain genetic disorders and medical conditions are also associated with SCC, while associations with human papillomavirus infection and high bodyweight are not established...
February 16, 2017: British Journal of Dermatology
https://www.readbyqxmd.com/read/28210409/primary-leiomyosarcoma-of-the-mandibular-alveolar-mucosa-of-a-12-year-old-child-from-ethiopia-a-case-report
#11
Tewodros Tefera Kenea, Betel Abebe Kebede, Fekadu Mesele Gozjuze, Hagos Kiros, Frank Wilde
Leiomyosarcomas (LMSs) are rare malignant mesenchymal tumors which show smooth-muscle differentiation. Most LMSs involving the oral tissues primarily affect the maxillary sinus, the maxillary or mandibular bone. We present a case of LMS of the mandibular alveolar mucosa, arising in a 12-year-old male child from Ethiopia. A malignant spindle cell-like neoplasm was diagnosed on clinical and radiographic findings as well as on incisional biopsy. The tumor was resected with wide margins. The following histopathologic examination with additional immunohistochemical studies secured the diagnosis LMS...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28210184/surgical-treatment-of-a-rare-case-of-bilateral-ptosis-due-to-localized-ocular-amyloidosis
#12
Gianluca Scuderi, Solmaz Abdolrahimzadeh, Antonietta Troccola, Marco Mazzocchi, Santi Maria Recupero
We describe a rare case of a 31-year old woman with bilateral ptosis due to localized amyloidosis. She referred a nine-year history of ptosis and surgical treatment with frontalis suspension three years previously. Following complete ophthalmological examination and evaluation of the ptosis we carried out tarsal and fornix biopsy, which revealed accumulation of a weakly eosinophilic amyloid positive substance. We performed surgical correction using the levator aponeurosis-Müller's muscle complex re-adaptation technique and amyloid substance debulking in all the palpebral layers in the left eye...
July 2016: Saudi Journal of Ophthalmology: Official Journal of the Saudi Ophthalmological Society
https://www.readbyqxmd.com/read/28210075/pancreatic-stellate-cell-pandora-s-box-for-pancreatic-disease-biology
#13
REVIEW
Ratnakar R Bynigeri, Aparna Jakkampudi, Ramaiah Jangala, Chivukula Subramanyam, Mitnala Sasikala, G Venkat Rao, D Nageshwar Reddy, Rupjyoti Talukdar
Pancreatic stellate cells (PSCs) were identified in the early 1980s, but received much attention after 1998 when the methods to isolate and culture them from murine and human sources were developed. PSCs contribute to a small proportion of all pancreatic cells under physiological condition, but are essential for maintaining the normal pancreatic architecture. Quiescent PSCs are characterized by the presence of vitamin A laden lipid droplets. Upon PSC activation, these perinuclear lipid droplets disappear from the cytosol, attain a myofibroblast like phenotype and expresses the activation marker, alpha smooth muscle actin...
January 21, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28209809/macrophage-to-myofibroblast-transition-contributes-to-interstitial-fibrosis-in-chronic-renal-allograft-injury
#14
Ying-Ying Wang, Hong Jiang, Jun Pan, Xiao-Ru Huang, Yu-Cheng Wang, Hong-Feng Huang, Ka-Fai To, David J Nikolic-Paterson, Hui-Yao Lan, Jiang-Hua Chen
Interstitial fibrosis is an important contributor to graft loss in chronic renal allograft injury. Inflammatory macrophages are associated with fibrosis in renal allografts, but how these cells contribute to this damaging response is not clearly understood. Here, we investigated the role of macrophage-to-myofibroblast transition in interstitial fibrosis in human and experimental chronic renal allograft injury. In biopsy specimens from patients with active chronic allograft rejection, we identified cells undergoing macrophage-to-myofibroblast transition by the coexpression of macrophage (CD68) and myofibroblast (α-smooth muscle actin [α-SMA]) markers...
February 16, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28209772/maternal-smoke-exposure-decreases-mesenchymal-proliferation-and-modulates-rho-gtpase-dependent-actin-cytoskeletal-signaling-in-fetal-lungs
#15
Uchenna Unachukwu, Jordis Trischler, Monica Goldklang, Rui Xiao, Jeanine D'Armiento
The present study tested the hypothesis that maternal smoke exposure results in fetal lung growth retardation due to dysregulation in various signaling pathways, including the Wnt (wingless-related integration site)/β-catenin pathway. Pregnant female C57BL/6J mice were exposed to cigarette smoke (100-150 mg/m(3)) or room air, and offspring were humanely killed on 12.5, 14.5, 16.5, and 18.5 d post coitum (dpc). We assessed lung stereology with Cavalieri estimation; apoptosis with proliferating cell nuclear antigen, TUNEL, and caspase assays; and gene expression with quantitative PCR (qPCR) and RNA sequencing on lung epithelium and mesenchyme retrieved by laser capture microdissection...
February 16, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28209732/direct-measurement-of-cortical-force-generation-and-polarization-in-a-living-parasite
#16
Rachel V Stadler, Lauren A White, Ke Hu, Brian P Helmke, William H Guilford
Apicomplexa is a large phylum of intracellular parasites that are notable for the diseases they cause, including toxoplasmosis, malaria and cryptosporidiosis. A conserved motile system is critical to their lifecycles as it drives directional gliding motility between cells, as well as invasion of and egress from host cells. However, our understanding of this system is limited by a lack of measurements of the forces driving parasite motion. We used a laser trap to measure the function of the motility apparatus of living Toxoplasma gondii by adhering a microsphere to the surface of an immobilized parasite...
February 16, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28209731/transport-of-fungal-rab11-secretory-vesicles-involves-myosin-5-dynein-dynactin-p25-and-kinesin-1-and-is-independent-of-kinesin-3
#17
Miguel A Peñalva, Jun Zhang, Xin Xiang, Areti Pantazopoulou
Hyphal tip cells of the fungus Aspergillus nidulans are useful to study long-range intracellular traffic. Post-Golgi secretory vesicles (SVs) containing the RAB11 orthologue RabE engage myosin-5 as well as plus-end- and minus-end-directed microtubule motors, providing an experimental system to investigate the interplay between microtubule and actin motors acting on the same cargo. By exploiting the fact that depolymerization of F-actin 'unleashes' SVs focused at the apex by myosin-5 to microtubule-dependent motors, we establish that the minus-end directed transport of SVs requires the dynein/dynactin supercomplex...
February 16, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28209510/microarray-and-transcription-binding-site-analysis-reveals-that-melatonin-attenuates-immune-responses-and-modulates-actin-rearrangement-in-macrophages
#18
Miki Kadena, Yutaro Kumagai, Alexis Vandenbon, Hitomi Matsushima, Haruka Fukamachi, Noboru Maruta, Hideo Kataoka, Takafumi Arimoto, Hirobumi Morisaki, Takahiro Funatsu, Hirotaka Kuwata
Melatonin produced by the pineal gland suppresses inflammatory responses in innate immune cells. However, the mechanism of how melatonin affects inflammatory gene regulation remains unclear. Here we performed comprehensive microarray analysis combined with transcription factor binding site (TFBS) analysis using LPS-induced mouse macrophages to investigate the effect of melatonin treatment. The results showed that melatonin preferentially downregulated interferon regulatory factors (IRFs) and signal transducers and activators of transcription (STATs) related signaling...
February 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28209486/vasodilator-stimulated-phosphoprotein-vasp-depletion-from-breast-cancer-mda-mb-231-cells-inhibits-tumor-spheroid-invasion-through-downregulation-of-migfilin-%C3%AE-catenin-and-urokinase-plasminogen-activator-upa
#19
Vasiliki Gkretsi, Andreas Stylianou, Triantafyllos Stylianopoulos
A hallmark of cancer cells is their ability to invade surrounding tissues and form metastases. Cell-extracellular matrix (ECM)-adhesion proteins are crucial in metastasis, connecting tumor ECM with actin cytoskeleton thus enabling cells to respond to mechanical cues. Vasodilator-stimulated phosphoprotein (VASP) is an actin-polymerization regulator which interacts with cell-ECM adhesion protein Migfilin, and regulates cell migration. We compared VASP expression in MCF-7 and MDA-MB-231 breast cancer (BC) cells and found that more invasive MDA-MB-231 cells overexpress VASP...
February 13, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28209294/sulfated-glycosaminoglycans-and-non-classically-secreted-proteins-basic-fgf-and-epimorphin-coordinately-regulate-tgf-%C3%AE-induced-cell-behaviors-of-human-scar-dermal-fibroblasts
#20
Tomoatsu Horigome, Shinya Takumi, Kota Shirai, Takumi Kido, Natsumi Hagiwara-Chatani, Ayumi Nakashima, Naoki Adachi, Hiroko Yano, Yohei Hirai
BACKGROUND: Upon skin injuries, dermal fibroblasts actively produce transforming growth factor-β (TGF-β), which leads to the formation of α-smooth muscle actin (αSMA)-positive granulation tissues. The hyperplasia or incomplete regression of these tissues subsequently causes scar formation in the skin, where sulfated glycosaminoglycans (GAGs), side chains of unique proteoglycans, are supposed to play important roles. OBJECTIVE: The aim of this study is to clarify the effects of sulfated GAGs on dermal cell behaviors triggered by the TGF-β signaling, along with its possible regulators basic fibroblast growth factor (bFGF) and cell surface epimorphin...
February 3, 2017: Journal of Dermatological Science
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